change: Switch to offical OpenFX Support. Still can't compile.

.clang-tidy

@@ -1,147 +0,0 @@
-# Generated from CLion Inspection settings
----
-Checks: '-*,
-bugprone-argument-comment,
-bugprone-assert-side-effect,
-bugprone-bad-signal-to-kill-thread,
-bugprone-branch-clone,
-bugprone-copy-constructor-init,
-bugprone-dangling-handle,
-bugprone-dynamic-static-initializers,
-bugprone-fold-init-type,
-bugprone-forward-declaration-namespace,
-bugprone-forwarding-reference-overload,
-bugprone-inaccurate-erase,
-bugprone-incorrect-roundings,
-bugprone-integer-division,
-bugprone-lambda-function-name,
-bugprone-macro-parentheses,
-bugprone-macro-repeated-side-effects,
-bugprone-misplaced-operator-in-strlen-in-alloc,
-bugprone-misplaced-pointer-arithmetic-in-alloc,
-bugprone-misplaced-widening-cast,
-bugprone-move-forwarding-reference,
-bugprone-multiple-statement-macro,
-bugprone-no-escape,
-bugprone-parent-virtual-call,
-bugprone-posix-return,
-bugprone-reserved-identifier,
-bugprone-sizeof-container,
-bugprone-sizeof-expression,
-bugprone-spuriously-wake-up-functions,
-bugprone-string-constructor,
-bugprone-string-integer-assignment,
-bugprone-string-literal-with-embedded-nul,
-bugprone-suspicious-enum-usage,
-bugprone-suspicious-include,
-bugprone-suspicious-memset-usage,
-bugprone-suspicious-missing-comma,
-bugprone-suspicious-semicolon,
-bugprone-suspicious-string-compare,
-bugprone-suspicious-memory-comparison,
-bugprone-suspicious-realloc-usage,
-bugprone-swapped-arguments,
-bugprone-terminating-continue,
-bugprone-throw-keyword-missing,
-bugprone-too-small-loop-variable,
-bugprone-undefined-memory-manipulation,
-bugprone-undelegated-constructor,
-bugprone-unhandled-self-assignment,
-bugprone-unused-raii,
-bugprone-unused-return-value,
-bugprone-use-after-move,
-bugprone-virtual-near-miss,
-cert-dcl21-cpp,
-cert-dcl58-cpp,
-cert-err34-c,
-cert-err52-cpp,
-cert-err60-cpp,
-cert-flp30-c,
-cert-msc50-cpp,
-cert-msc51-cpp,
-cert-str34-c,
-cppcoreguidelines-interfaces-global-init,
-cppcoreguidelines-narrowing-conversions,
-cppcoreguidelines-pro-type-member-init,
-cppcoreguidelines-pro-type-static-cast-downcast,
-cppcoreguidelines-slicing,
-google-default-arguments,
-google-explicit-constructor,
-google-runtime-operator,
-hicpp-exception-baseclass,
-hicpp-multiway-paths-covered,
-misc-misplaced-const,
-misc-new-delete-overloads,
-misc-no-recursion,
-misc-non-copyable-objects,
-misc-throw-by-value-catch-by-reference,
-misc-unconventional-assign-operator,
-misc-uniqueptr-reset-release,
-modernize-avoid-bind,
-modernize-concat-nested-namespaces,
-modernize-deprecated-headers,
-modernize-deprecated-ios-base-aliases,
-modernize-loop-convert,
-modernize-make-shared,
-modernize-make-unique,
-modernize-pass-by-value,
-modernize-raw-string-literal,
-modernize-redundant-void-arg,
-modernize-replace-auto-ptr,
-modernize-replace-disallow-copy-and-assign-macro,
-modernize-replace-random-shuffle,
-modernize-return-braced-init-list,
-modernize-shrink-to-fit,
-modernize-unary-static-assert,
-modernize-use-auto,
-modernize-use-bool-literals,
-modernize-use-emplace,
-modernize-use-equals-default,
-modernize-use-equals-delete,
-modernize-use-nodiscard,
-modernize-use-noexcept,
-modernize-use-nullptr,
-modernize-use-override,
-modernize-use-transparent-functors,
-modernize-use-uncaught-exceptions,
-mpi-buffer-deref,
-mpi-type-mismatch,
-openmp-use-default-none,
-performance-faster-string-find,
-performance-for-range-copy,
-performance-implicit-conversion-in-loop,
-performance-inefficient-algorithm,
-performance-inefficient-string-concatenation,
-performance-inefficient-vector-operation,
-performance-move-const-arg,
-performance-move-constructor-init,
-performance-no-automatic-move,
-performance-noexcept-move-constructor,
-performance-trivially-destructible,
-performance-type-promotion-in-math-fn,
-performance-unnecessary-copy-initialization,
-performance-unnecessary-value-param,
-portability-simd-intrinsics,
-readability-avoid-const-params-in-decls,
-readability-const-return-type,
-readability-container-size-empty,
-readability-convert-member-functions-to-static,
-readability-delete-null-pointer,
-readability-deleted-default,
-readability-inconsistent-declaration-parameter-name,
-readability-make-member-function-const,
-readability-misleading-indentation,
-readability-misplaced-array-index,
-readability-non-const-parameter,
-readability-redundant-control-flow,
-readability-redundant-declaration,
-readability-redundant-function-ptr-dereference,
-readability-redundant-smartptr-get,
-readability-redundant-string-cstr,
-readability-redundant-string-init,
-readability-simplify-subscript-expr,
-readability-static-accessed-through-instance,
-readability-static-definition-in-anonymous-namespace,
-readability-string-compare,
-readability-uniqueptr-delete-release,
-readability-use-anyofallof'

.gitignore

@@ -1,6 +1,6 @@
 # CMake artifacts
 /build*/
-
+build
 # Doxygen
 /docs/
 

.gitmodules

@@ -1,10 +1,6 @@
-[submodule "ext/core"]
+[submodule "ext/core"]README
 	path = ext/core
 	url = https://github.com/olive-editor/core
 [submodule "ext/KDDockWidgets"]
 	path = ext/KDDockWidgets
 	url = https://github.com/olive-editor/KDDockWidgets.git
-[submodule "third_party/openfx"]
-	path = third_party/openfx
-	url = https://github.com/AcademySoftwareFoundation/openfx.git
-	branch = main

CMakeLists.txt

@@ -14,10 +14,16 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.30 FATAL_ERROR)
 
 project(olive-editor VERSION 0.2.0 LANGUAGES CXX)
 
+set(CMAKE_CXX_STANDARD 23)
+
+set(CMAKE_CXX_SCAN_FOR_MODULES ON)
+set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD ON)
+find_package(expat REQUIRED)
+
 option(BUILD_QT6 "Build with Qt 6 over 5 (experimental)" ON)
 option(BUILD_DOXYGEN "Build Doxygen documentation" OFF)
 option(BUILD_TESTS "Build unit tests" OFF)
@@ -31,10 +37,11 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
+
 # Generates a compile_commands.json in the build dir, link that to the repo
 # root to enrich your IDE with clangd language server protocol functionalities
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
+add_subdirectory(third_party/openfx/HostSupport)
 # Sanitizers
 add_library(olive-sanitizers INTERFACE)
 include(cmake/Sanitizers.cmake)
@@ -168,7 +175,7 @@ list(APPEND OLIVE_LIBRARIES
 )
 
 # Link FFmpeg
-find_package(FFMPEG 3.0 REQUIRED
+find_package(FFMPEG 7.0 REQUIRED
   COMPONENTS
   avutil
   avcodec

app/CMakeLists.txt

@@ -18,7 +18,6 @@
 set(OLIVE_SOURCES
   core.h
   core.cpp
-        pluginSupport/DrawSuite.cpp
 )
 
 #set(OLIVE_RESOURCES)
@@ -33,7 +32,6 @@ add_subdirectory(dialog)
 add_subdirectory(node)
 add_subdirectory(packaging)
 add_subdirectory(panel)
-add_subdirectory(pluginSupport)
 add_subdirectory(render)
 add_subdirectory(shaders)
 add_subdirectory(task)
@@ -75,8 +73,10 @@ add_library(libolive-editor
   ${OLIVE_SOURCES}
   ${OLIVE_RESOURCES}
 )
-
-target_include_directories(libolive-editor PUBLIC ../third_party/openfx/include)
+add_subdirectory(pluginSupport)
+target_compile_features(libolive-editor PUBLIC cxx_std_23)
+include_directories(../third_party/openfx/include
+        ../third_party/openfx/HostSupport/include)
 # Remove prefix - prevents CMake calling it "liblibolive-editor"
 set_target_properties(libolive-editor PROPERTIES PREFIX "")
 
@@ -86,7 +86,8 @@ add_executable(olive-editor
   $<TARGET_OBJECTS:libolive-editor>
   $<TARGET_OBJECTS:olive-version-obj>
 )
-
+target_include_directories(olive-editor PUBLIC pluginSupport)
+target_link_libraries(olive-editor PUBLIC OfxHost)
 # Create docs if doxygen was found
 if(DOXYGEN_FOUND)
   set(DOXYGEN_PROJECT_NAME "Olive")

app/main.cpp

@@ -52,7 +52,7 @@ extern "C" {
 #ifdef USE_CRASHPAD
 #include "common/crashpadinterface.h"
 #endif // USE_CRASHPAD
-
+#include "OlivePlugin.cpp"
 int decompress_project(const QString &project)
 {
 	if (project.isEmpty()) {
@@ -214,6 +214,11 @@ int main(int argc, char *argv[])
 		QStringLiteral("project"),
 		QCoreApplication::translate("main", "Project to open on startup"));
 
+	auto no_plugin = parser.AddOption(
+		{ QStringLiteral("-no-plugin") },
+		QCoreApplication::translate("main", "Don't load plugins")
+		);
+
 	// Qt options re-implemented (add to this as necessary)
 	//
 	// Because we don't use QCommandLineParser, we must filter out Qt's arguments ourselves. Here,
@@ -280,6 +285,10 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	if (!no_plugin->IsSet()) {
+		olive::plugin::loadPlugins("plugins");
+	}
+
 	if (crash_option->IsSet()) {
 		startup_params.set_crash_on_startup(true);
 	}

app/node/plugins/Plugin.h

@@ -20,7 +20,7 @@
 #define PLUGIN_NODES_H
 #include "node/node.h"
 #include "pluginSupport/Plugin.h"
-#include "pluginSupport/OlivePlugin.h"
+#include "pluginSupport/OlivePlugin.cpp"
 namespace olive
 {
 namespace plugin

app/pluginSupport/CMakeLists.txt

@@ -1,22 +1,6 @@
-set(OLIVE_SOURCES
-        ${OLIVE_SOURCES}
-        pluginSupport/OlivePlugin.h
-        pluginSupport/OlivePlugin.cpp
-        pluginSupport/Dialog.cpp
-        pluginSupport/Core.cpp
-        pluginSupport/DrawSuite.cpp
-        pluginSupport/GpuRender.cpp
-        pluginSupport/ImageEffect.cpp
-        pluginSupport/Interact.cpp
-        pluginSupport/KeySyms.cpp
-        pluginSupport/Memory.cpp
-        pluginSupport/MultiThread.cpp
-        pluginSupport/OpenGLRender.cpp
-        pluginSupport/Param.cpp
-        pluginSupport/ParametricParam.cpp
-        pluginSupport/Pixels.cpp
-        pluginSupport/Progress.cpp
-        pluginSupport/Property.cpp
-        pluginSupport/TimeLine.cpp
-        PARENT_SCOPE
+target_sources(libolive-editor PRIVATE
+        OliveHost.h
+        OliveHost.cpp
+        OliveInstance.h
+        OliveInstance.cpp
 )

app/pluginSupport/Core.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Dialog.cpp

@@ -1,25 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <QMessageBox>
-#include <ofxDialog.h>
-
-OfxStatus NotifyRedrawPending()
-{
-	return kOfxStatReplyDefault;
-}

app/pluginSupport/DrawSuite.cpp

@@ -1,19 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "DrawSuite.h"

app/pluginSupport/GpuRender.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/ImageEffect.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Interact.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/KeySyms.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Memory.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Message.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/MultiThread.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/OliveHost.cpp

@@ -0,0 +1,85 @@
+/*
+ * Olive Community Edition - Non-Linear Video Editor
+ * Copyright (C) 2025 Olive CE Team
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "node/project.h"
+#include "ofxhImageEffect.h"
+#include <cstddef>
+#include  <ofxhPluginCache.h>
+#include <ofxhBinary.h>
+
+#include <QApplication>
+#include <QDir>
+#include "OliveHost.h"
+using namespace OFX::Host;
+using namespace olive::plugin;
+void loadPlugins(QString path)
+{
+	QDir dir=(QCoreApplication::applicationDirPath()+path);
+	QFileInfoList files=dir.entryInfoList();
+	for (auto& file:files) {
+		if (file.isDir()) {
+			OFX::Binary binary(file.absoluteFilePath().toStdString());
+
+		}
+	}
+}
+
+OliveHost::~OliveHost()
+{
+	for(auto& descriptor:descriptors_){
+		delete descriptor;
+		descriptor=nullptr;
+	}
+	for(auto& instance:instances_){
+		delete instance;
+		instance=nullptr;
+	}
+	
+}
+ImageEffect::Descriptor *
+OliveHost::makeDescriptor(ImageEffect::ImageEffectPlugin* plugin)
+{
+	ImageEffect::Descriptor* desc = new ImageEffect::Descriptor(plugin);
+	descriptors_.append(desc);
+	return desc;
+}
+ImageEffect::Descriptor *
+OliveHost::makeDescriptor(const ImageEffect::Descriptor &rootContext,
+							ImageEffect::ImageEffectPlugin *plugin)
+{
+	ImageEffect::Descriptor* desc =  new ImageEffect::Descriptor(rootContext,plugin);
+	descriptors_.append(desc);
+	return desc;
+}
+ImageEffect::Descriptor *
+OliveHost::makeDescriptor(const std::string &bundlePath,
+							ImageEffect::ImageEffectPlugin *plugin)
+{
+	ImageEffect::Descriptor* desc =  new ImageEffect::Descriptor(bundlePath, plugin);
+	descriptors_.append(desc);
+	return desc;
+}
+
+OFX::Host::ImageEffect::Instance* OliveHost::newInstance(void* clientData,
+							OFX::Host::ImageEffect::ImageEffectPlugin* plugin,
+							OFX::Host::ImageEffect::Descriptor& desc,
+							const std::string& context){
+	//ImageEffect::Instance* instance=new ImageEffect::Instance(clientData,plugin,desc,context);
+	instances_.append(instance);
+	return instance;
+};

app/pluginSupport/OliveHost.h

@@ -0,0 +1,69 @@
+/*
+ * Olive Community Edition - Non-Linear Video Editor
+ * Copyright (C) 2025 Olive CE Team
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include  "ofxhHost.h"
+#include "ofxhImageEffectAPI.h"
+#include "ofxCore.h"
+#include "ofxhImageEffect.h"
+
+#include <QVariant>
+#include <cstdint>
+#include <QString>
+#include <QMap>
+#include <any>
+#include <list>
+#include <OpenImageIO/detail/fmt/chrono.h>
+#include <qlist.h>
+namespace olive {
+namespace plugin {
+
+
+void loadPlugins(QString path);
+class OliveHost: public OFX::Host::ImageEffect::Host{
+public:
+	OliveHost()=default;
+	~OliveHost() override;
+
+	bool pluginSupported(OFX::Host::ImageEffect::ImageEffectPlugin *plugin,
+		std::string &reason) const override
+	{
+		return true;
+	};
+
+	OFX::Host::ImageEffect::Instance* newInstance(void* clientData,
+							OFX::Host::ImageEffect::ImageEffectPlugin* plugin,
+							OFX::Host::ImageEffect::Descriptor& desc,
+							const std::string& context) override;
+
+
+	OFX::Host::ImageEffect::Descriptor *makeDescriptor(
+		OFX::Host::ImageEffect::ImageEffectPlugin* plugin) override;
+
+	OFX::Host::ImageEffect::Descriptor *makeDescriptor(
+		const OFX::Host::ImageEffect::Descriptor &rootContext,
+		OFX::Host::ImageEffect::ImageEffectPlugin *plugin) override;
+
+	OFX::Host::ImageEffect::Descriptor *makeDescriptor(
+		const std::string &bundlePath,
+		OFX::Host::ImageEffect::ImageEffectPlugin *plugin) override;
+
+private:
+	QList<OFX::Host::ImageEffect::Descriptor*> descriptors_;
+	QList<OFX::Host::ImageEffect::Instance*> instances_;
+};
+}
+}

app/pluginSupport/OliveInstance.cpp

@@ -0,0 +1,64 @@
+/*
+ * Olive Community Edition - Non-Linear Video Editor
+ * Copyright (C) 2025 Olive CE Team
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "OliveInstance.h"
+#include "ofxCore.h"
+#include "ofxMessage.h"
+#include <cstdio>
+#include <QMessageBox>
+#include <qmessagebox.h>
+#include <string.h>
+#include <QString>
+namespace olive{
+namespace plugin {
+OfxStatus OliveInstance::vmessage(const char* type,
+	const char* id,
+	const char* format,	
+	va_list args){
+
+	char *buffer=new char[1024];
+
+	memset(buffer, 0, 1024*sizeof(char));
+	vsprintf(buffer, format, args);
+
+	QString message(buffer);
+
+	delete [] buffer;
+
+	if(strncmp(type, kOfxMessageQuestion, strlen(kOfxMessageQuestion))){
+
+		auto ret= QMessageBox::information(nullptr, 
+			"", message, 
+			QMessageBox::Ok, QMessageBox::Cancel);
+
+		if(ret==QMessageBox::Ok){
+			return kOfxStatReplyYes;
+		} 
+		else {
+			return kOfxStatReplyNo;
+		}	
+
+	}
+	else{
+		QMessageBox::information(nullptr, 
+			"", message);
+		return kOfxStatOK;
+	}
+}
+
+}
+}

app/pluginSupport/OliveInstance.h

@@ -0,0 +1,58 @@
+/*
+ * Olive Community Edition - Non-Linear Video Editor
+ * Copyright (C) 2025 Olive CE Team
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ofxImageEffect.h"
+#include "ofxhImageEffect.h"
+namespace olive {
+namespace plugin{
+class OliveInstance : public OFX::Host::ImageEffect::Instance {
+public:
+	OliveInstance(
+				  OFX::Host::ImageEffect::ImageEffectPlugin* plugin,
+				  OFX::Host::ImageEffect::Descriptor& desc,
+				  const std::string& context,
+				  bool interactive)
+		: OFX::Host::ImageEffect::Instance(plugin, desc, context, interactive)
+	{
+	}
+	~OliveInstance() override = default;
+	virtual const std::string &getDefaultOutputFielding() const{
+		return kOfxImageFieldNone;
+	};
+
+	OFX::Host::ImageEffect::ClipInstance *newClipInstance(
+		OFX::Host::ImageEffect::Instance *plugin,
+		OFX::Host::ImageEffect::ClipDescriptor *descriptor,
+		int index) override;
+
+	OfxStatus vmessage(const char* type,
+        const char* id,
+        const char* format,	
+        va_list args) override;  
+
+	OfxStatus setPersistentMessage(const char* type,
+        const char* id,
+        const char* format,
+        va_list args)  override;
+		
+    OfxStatus clearPersistentMessage() override;  
+	
+
+};
+}
+}

app/pluginSupport/OlivePlugin.cpp

@@ -1,215 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "OlivePlugin.h"
-
-#include <utility>
-olive::plugin::OlivePlugin::~OlivePlugin()
-{
-	for (void *p:mems) {
-		free(p);
-	}
-}
-OfxStatus olive::plugin::OlivePlugin::getProp(QString key, int index,
-													char **str)
-{
-	*str=nullptr;
-	if (stringProps.contains(key)) {
-		if (stringProps[key].count()>index) {
-			*str=stringProps[key][index];
-			return kOfxStatOK;
-		}
-		return kOfxStatErrBadIndex;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getPropN(QString key,
-													char ***str)
-{
-	*str=nullptr;
-	if (stringProps.contains(key)) {
-		*str=stringProps[key].data();
-		return kOfxStatOK;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getProp(QString key, int index,
-													void **str)
-{
-	*str=nullptr;
-	if (pointerProps.contains(key)) {
-		if (pointerProps[key].count()>index) {
-			*str=pointerProps[key][index];
-			return kOfxStatOK;
-		}
-		return kOfxStatErrBadIndex;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getPropN(QString key,
-													void ***p)
-{
-	*p=nullptr;
-	if (pointerProps.contains(key)) {
-		*p=pointerProps[key].data();
-		return kOfxStatOK;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getProp(QString key, int index,
-													int* p)
-{
-	*p=0;
-	if (intProps.contains(key)) {
-		if (intProps[key].count()>index) {
-			*p=intProps[key][index];
-			return kOfxStatOK;
-		}
-		return kOfxStatErrBadIndex;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getPropN(QString key,
-													int **p)
-{
-	*p=nullptr;
-	if (intProps.contains(key)) {
-		*p=intProps[key].data();
-		return kOfxStatOK;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getProp(QString key, int index,
-													double* p)
-{
-	*p=0;
-	if (doubleProps.contains(key)) {
-		if (doubleProps[key].count()>index) {
-			*p=doubleProps[key][index];
-			return kOfxStatOK;
-		}
-		return kOfxStatErrBadIndex;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::getPropN(QString key,
-													double **p)
-{
-	*p=nullptr;
-	if (doubleProps.contains(key)) {
-		*p=doubleProps[key].data();
-		return kOfxStatOK;
-	}
-	return kOfxStatErrUnknown;
-}
-OfxStatus olive::plugin::OlivePlugin::setProp(QString key, int index, char *str)
-{
-	char *p=(char*)calloc(strlen(str)+1,sizeof(char));
-	strcpy(p,str);
-	if (stringProps.contains(key)) {
-		if (stringProps[key].count()>index) {
-			stringProps[key].insert(index, p);
-			return kOfxStatOK;
-		}
-		stringProps[key].emplace_back(p);
-		return kOfxStatOK;
-	}
-	QVector<char *> vec;
-	vec.emplace_back(str);
-	stringProps[key]=vec;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setPropN(QString key, int count, char **strs)
-{
-	QVector<char *> vector;
-	for (int i=0;i<count;i++) {
-		char *p=(char*)calloc(strlen(strs[i])+1,sizeof(char));
-		strcpy(p,strs[i]);
-		vector.emplace_back(p);
-	}
-	stringProps[key]=vector;
-}
-OfxStatus olive::plugin::OlivePlugin::setProp(QString key, int index, void *p)
-{
-	if (pointerProps.contains(key)) {
-		if (pointerProps[key].count()>index) {
-			pointerProps[key].insert(index, p);
-			return kOfxStatOK;
-		}
-		pointerProps[key].emplace_back(p);
-		return kOfxStatOK;
-	}
-	QVector<void *> vec;
-	vec.emplace_back(p);
-	pointerProps[key]=vec;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setPropN(QString key,int count, void **ps)
-{
-	QVector<void *> vector;
-	vector.reserve(count);
-	memcpy(vector.data(), ps, sizeof(void *)*count);
-	pointerProps[key]=vector;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setProp(QString key, int index, int p)
-{
-	if (intProps.contains(key)) {
-		if (intProps[key].count()>index) {
-			intProps[key].insert(index, p);
-			return kOfxStatOK;
-		}
-		intProps[key].emplace_back(p);
-		return kOfxStatOK;
-	}
-	QVector<int> vec;
-	vec.emplace_back(p);
-	intProps[key]=vec;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setPropN(QString key,int count, int *ps)
-{
-	QVector<int> vector;
-	vector.reserve(count);
-	memcpy(vector.data(), ps, sizeof(int)*count);
-	intProps[key]=vector;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setProp(QString key, int index, double p)
-{
-	if (doubleProps.contains(key)) {
-		if (doubleProps[key].count()>index) {
-			doubleProps[key].insert(index, p);
-			return kOfxStatOK;
-		}
-		doubleProps[key].emplace_back(p);
-		return kOfxStatOK;
-	}
-	QVector<double> vec;
-	vec.emplace_back(p);
-	doubleProps[key]=vec;
-	return kOfxStatOK;
-}
-OfxStatus olive::plugin::OlivePlugin::setPropN(QString key,int count, double *ps)
-{
-	QVector<double> vector;
-	vector.reserve(count);
-	memcpy(vector.data(), ps, sizeof(doubleProps)*count);
-	doubleProps[key]=vector;
-	return kOfxStatOK;
-}
-

app/pluginSupport/OlivePlugin.h

@@ -1,81 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef OLIVE_PLUGIN_H
-#define OLIVE_PLUGIN_H
-#include "OlivePlugin.h"
-#include "ofxCore.h"
-#include <QVariant>
-#include <cstdint>
-#include <QString>
-#include <QMap>
-#include <any>
-#include <list>
-#include <OpenImageIO/detail/fmt/chrono.h>
-namespace olive
-{
-namespace plugin
-{
-class Value;
-enum class Type {
-	FLOAT, STRING, INT, POINTER, ARRAY, NONE
-};
-struct plugin_mem_ptr {
-	void *mem;
-	int32_t count=0;
-};
-class OlivePlugin {
-public:
-	OlivePlugin()=default;
-	~OlivePlugin();
-	OfxStatus getProp(QString key, int index, char **str);
-	OfxStatus getPropN(QString key, char *** strs);
-	OfxStatus getProp(QString key, int index, void **p);
-	OfxStatus getPropN(QString key, void ***ps);
-	OfxStatus getProp(QString key, int index, int *p);
-	OfxStatus getPropN(QString key, int **ps);
-	OfxStatus getProp(QString key, int index, double *p);
-	OfxStatus getPropN(QString key, double **ps);
-	OfxStatus setProp(QString key, int index, char *str);
-	OfxStatus setPropN(QString key,int count, char ** strs);
-	OfxStatus setProp(QString key, int index, void *p);
-	OfxStatus setPropN(QString key,int count, void **ps);
-	OfxStatus setProp(QString key, int index, int p);
-	OfxStatus setPropN(QString key,int count, int *ps);
-	OfxStatus setProp(QString key, int index, double p);
-	OfxStatus setPropN(QString key, int count, double *ps);
-	void addMem(void *mem)
-	{
-		mems.emplace_back(mem);
-	}
-private:
-	uint64_t id;
-	QString name;
-	QString version;
-	QMap<QString, QVector<char *>> stringProps;
-	QMap<QString, QVector<int>> intProps;
-	QMap<QString, QVector<double>> doubleProps;
-	QMap<QString, QVector<void *>> pointerProps;
-	std::list<void *> mems;
-};
-}
-}
-struct OfxPropertySetStruct {
-	olive::plugin::OlivePlugin* plugin;
-};
-#endif //OLIVE_PLUGIN_H

app/pluginSupport/OpenGLRender.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Param.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/ParametricParam.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Pixels.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Progress.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

app/pluginSupport/Property.cpp

@@ -1,217 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "node/plugins/Plugin.h"
-
-#include <ofxProperty.h>
-#include <OpenImageIO/simd.h>
-#include <oneapi/tbb/detail/_template_helpers.h>
-
-OfxStatus propSetPointer(OfxPropertySetHandle properties,
-	const char *property, int index, void *value)
-{
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetString(OfxPropertySetHandle properties,
-	const char *property, int index, const char *value)
-{
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setProp(property, index, const_cast<char *>(value));
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetDouble(OfxPropertySetHandle properties,
-	const char *property, int index, double value)
-{
-
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetInt(OfxPropertySetHandle properties, const char *property,
-					 int index, int value)
-{
-
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetPointerN(OfxPropertySetHandle properties,
-	const char *property, int count, void * const*value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setPropN(property, count, const_cast<void**>(value));
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetStringN(OfxPropertySetHandle properties,
-	const char *property, int index, int count,const char *const *value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setPropN(property, count, const_cast<char**>(value));
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetDoubleN(OfxPropertySetHandle properties,
-	const char *property,int count, const double* value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setPropN(property, count, const_cast<double *>(value));
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetIntN(OfxPropertySetHandle properties, const char *property,
-					 int count, const int *value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->setPropN(property, count, const_cast<int *>(value));
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetPointer(OfxPropertySetHandle properties,
-	const char *property, int index, void **value)
-{
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetString(OfxPropertySetHandle properties,
-	const char *property, int index, char **value)
-{
-	std::any val;
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetDouble(OfxPropertySetHandle properties,
-	const char *property, int index, double *value)
-{
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetInt(OfxPropertySetHandle properties, const char *property,
-					 int index, int *value)
-{
-	if (properties->plugin) {
-		if (index<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getProp(property, index, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetPointerN(OfxPropertySetHandle properties,
-	const char *property, int count, void ***value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getPropN(property, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propGetStringN(OfxPropertySetHandle properties,
-	const char *property, int count, char ***value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getPropN(property, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetDoubleN(OfxPropertySetHandle properties,
-	const char *property, int index, int count, double** value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getPropN(property, value);
-	}
-	return kOfxStatErrBadHandle;
-}
-
-OfxStatus propSetIntN(OfxPropertySetHandle properties, const char *property,
-					 int index, int count, int **value)
-{
-	if (properties->plugin) {
-		if (count<0) {
-			return kOfxStatErrBadIndex;
-		}
-		return properties->plugin->getPropN(property, value);
-	}
-	return kOfxStatErrBadHandle;
-}

app/pluginSupport/TimeLine.cpp

@@ -1,17 +0,0 @@
-/*
- * Olive Community Edition - Non-Linear Video Editor
- * Copyright (C) 2025 Olive CE Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */

third_party/openfx/HostSupport/BUILDING

@@ -0,0 +1,37 @@
+Dependencies
+------------
+
+Dependent upon the following
+
+*the expat library (expat.h) - to parse XML
+*ofx header files
+
+How to build the library
+------------------------
+
+UNIX
+  - simply type 'make' in this directory, it will create 'libofxHost.a' in directory ./lib
+  - the Makefile assumes expat is installed in a standard system location, if it is not, 
+    you need to do the following
+
+     make EXPAT_INCLUDE=-IDIRECTORY_WITH_EXPAT
+
+WINDOWS
+  - use the vc8 projects
+
+
+How to build the examples
+------------------------
+
+UNIX
+  - make the ofxHostLib.a library
+  - in the examples directory type 'make',
+  - the Makefile assumes expat is installed in a standard system location, if it is not, 
+    you need to do the following
+
+     make EXPAT_INCLUDE=-IDIRECTORY_WITH_EXPAT EXPAT_LIB=SOMEWHERE/libexpat.a
+
+WINDOWS
+  - use the vc8 projects
+
+

third_party/openfx/HostSupport/CMakeLists.txt

@@ -0,0 +1,22 @@
+set(OFX_HOSTSUPPORT_HEADER_DIR "include")
+set(OFX_HOSTSUPPORT_LIBRARY_DIR "src")
+set(OFX_HEADER_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../include")
+aux_source_directory(OFX_HEADER_FILES "${CMAKE_CURRENT_SOURCE_DIR}/../include")
+file(GLOB_RECURSE OFX_HOSTSUPPORT_HEADER_FILES "${OFX_HOSTSUPPORT_HEADER_DIR}/*.h")
+file(GLOB_RECURSE OFX_HOSTSUPPORT_LIBRARY_FILES "${OFX_HOSTSUPPORT_LIBRARY_DIR}/*.cpp")
+add_library(OfxHost STATIC
+	${OFX_HEADER_FILES}
+	${OFX_HOSTSUPPORT_HEADER_FILES}
+	${OFX_HOSTSUPPORT_LIBRARY_FILES})
+
+set_target_properties(OfxHost PROPERTIES LINKER_LANGUAGE CXX)
+if(NOT MSVC)
+	set_target_properties(OfxHost PROPERTIES COMPILE_FLAGS "-fPIC")
+endif()
+
+target_link_libraries(OfxHost PUBLIC expat::expat)
+
+target_include_directories(OfxHost PUBLIC
+	${OFX_HEADER_DIR}
+	${OFX_HOSTSUPPORT_HEADER_DIR}
+	${expat_INCLUDE_DIR})

third_party/openfx/HostSupport/README

@@ -0,0 +1,69 @@
+This directory contains source to an implementation of an OFX host C++ support library.
+This library skins the raw C API with a C++ layer, which is easy to program and abstracts
+the base API.
+
+It does several things,
+	- skins the C API with C++ classes, the host application 'only' needs to
+                 - derive several classes
+                 - implement a bunch of virtual methods
+                 - set some OFX properties
+        - does most of the complicated logic in OFX,
+                 - regions of interest calls
+                 - clip preferences calls     
+        - provides a persistent plug-in caching mechanism so that
+                 - newly installed plug-ins are described into a cache file,
+                 - the cache persists as an XML file with enough information
+                   to construct simple menus etc..
+                 - once cached, plug-ins need only be loaded on demand.
+        - is extensible beyond the base API,
+                 - allows hosts to provide extra suites and properties fairly easily.
+        - it is generic beyond ImageEffects APIs, so other APIs can be implemented
+             on the core sections of it.
+
+Apart from standard C and C++ libraries it is dependent on the expat XML library.
+
+You'll still need to understand what the API actually does, its just that the implementation details that become easier.
+
+The layer could do with some improvement, specifically,
+	- support for the external XML resource file,
+        - a degree more tidying up,
+        - parameter interacts
+        - more documentation.
+
+Released under a BSD-style licence: see source.
+
+Authors:
+         Abigail Brady <abigail@thefoundry.co.uk>
+         Andrew Whitmore <andy@thefoundry.co.uk>
+         Bruno Nicoletti <bruno@thefoundry.co.uk>
+
+Release Notes
+-------------
+
+26/03/2007
+
+Minimum implementation, which allows plugin descriptions to be cached.  Includes property sets and
+property suite and implementation of plugin description.  Support for describing in context and
+parameters not fully enabled.
+
+29/03/2007
+
+Support for describing in contexts and parameters.  These are cached as well.
+
+25/06/2007
+
+Major overhaul of the thing,
+      - propertys made simpler to use
+      - re-namespaced several classes so that anything to do with image effects are
+         in the ImageEffect namespace
+      - made the host layer do the logic for several Image Effect actions
+        - clip preferences
+        - regions of interest
+      - simplified the function signatures of the actions
+      - the 'Host' class now acts as,
+         - a factory,
+         - a filter for constructed objects,
+         - a description of the host application to the plugin.
+
+# SPDX-License-Identifier: BSD-3-Clause
+

third_party/openfx/HostSupport/TTD

@@ -0,0 +1,17 @@
+Things to do. This is a wish list of features to add to the host layer...
+
+Common Base Class for All Plugin Instances
+  - currently using a void * to pass instance pointers to components that do not
+    need to know about image effects (eg: interact base classes).
+  - Should have a base 'Plugin::Instance' class that ImageEffect::Instance and any
+    other kind of plugin instance should derive from.
+
+XML Resource Support
+  - have the host layer manage the external XML resource file and relabel things appropriately.
+
+Support for Custom Params
+  - not there yet
+  - should have the host layer manage most of the custom param animation stuff as well.
+
+
+

third_party/openfx/HostSupport/include/ofxhBinary.h

@@ -0,0 +1,96 @@
+
+
+#ifndef OFX_BINARY_H
+#define OFX_BINARY_H
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+#include <string>
+#include <iostream>
+
+#if defined(WIN32) || defined(WIN64)
+#define I386
+#elif defined(__linux__) || defined(__FreeBSD__)
+#define UNIX
+#ifdef __i386__
+#define I386
+#elif defined(__amd64__)
+#define AMD64
+#else
+#error cannot detect architecture
+#endif
+#elif defined( __APPLE__)
+#define UNIX
+#else
+#error cannot detect operating system
+#endif
+
+#if defined(UNIX)
+#include <dlfcn.h>
+#elif defined (WINDOWS)
+#include "windows.h"
+#include <assert.h>
+#endif
+
+#include <sys/stat.h>
+
+namespace OFX 
+{
+
+  /// class representing a DLL/Shared Object/etc
+  class Binary {
+    /// destruction will close the library and invalidate
+    /// any function pointers returned by lookupSymbol()
+  protected :
+    std::string _binaryPath;
+    bool _invalid;
+#if defined(UNIX)
+    void *_dlHandle;
+#elif defined (WINDOWS)
+    HINSTANCE _dlHandle;
+#endif
+    time_t _time;
+    off_t _size;
+    int _users;
+  public :
+
+    /// create object representing the binary.  will stat() it, 
+    /// and this fails, will set binary to be invalid.
+    Binary(const std::string &binaryPath);
+
+    ~Binary() { unload(); }
+
+    bool isLoaded() const { return _dlHandle != 0; }
+
+    /// is this binary invalid? (did the a stat() or load() on the file fail,
+    /// or are we missing a some of the symbols?
+    bool isInvalid() const { return _invalid; }
+
+    /// set invalid status (e.g. called by user if a mandatory symbol was missing)
+    void setInvalid(bool invalid) { _invalid = invalid; }
+
+    /// Last modification time of the file.
+    time_t getTime() const { return _time; }
+
+    /// Current size of the file.
+    off_t getSize() const { return _size; }
+
+    /// Path to the file.
+    const std::string &getBinaryPath() const { return _binaryPath; }
+
+    void ref();
+    void unref();
+
+    /// open the binary.
+    void load();
+
+    /// close the binary
+    void unload();
+
+    /// look up a symbol in the binary file and return it as a pointer.
+    /// returns null pointer if not found, or if the library is not loaded.
+    void *findSymbol(const std::string &symbol);
+  };
+}
+
+#endif

third_party/openfx/HostSupport/include/ofxhClip.h

@@ -0,0 +1,499 @@
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#ifndef OFX_CLIP_H
+#define OFX_CLIP_H
+
+#include "ofxImageEffect.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhUtilities.h"
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace ImageEffect {
+      // forward declarations
+      class Image;
+      class Instance;
+#   ifdef OFX_SUPPORTS_OPENGLRENDER
+      class Texture;
+#   endif
+
+      /// Base to both descriptor and instance it 
+      /// is used to basically fetch common properties 
+      /// by function name
+      class ClipBase {
+      protected :
+        Property::Set _properties;   
+        
+      public :
+        /// base ctor, for a descriptor
+        ClipBase();
+        
+        virtual ~ClipBase() { }
+
+        /// ctor, when copy constructing an instance from a descripto
+        explicit ClipBase(const ClipBase &other);
+
+        /// name of the clip
+        const std::string &getName() const
+        {
+          return _properties.getStringProperty(kOfxPropName);
+        }
+
+        /// name of the clip
+        const std::string &getShortLabel() const;
+        
+        /// name of the clip
+        const std::string &getLabel() const;
+        
+        /// name of the clip
+        const std::string &getLongLabel() const;
+
+        /// return a std::vector of supported comp
+        const std::vector<std::string> &getSupportedComponents() const;
+        
+        /// is the given component supported
+        bool isSupportedComponent(const std::string &comp) const;
+
+        /// does the clip do random temporal access
+        bool temporalAccess() const;
+
+        /// is the clip optional
+        bool isOptional() const;
+
+        /// is the clip a nominal 'mask' clip
+        bool isMask() const;
+        
+        /// how does this clip like fielded images to be presented to it
+        const std::string &getFieldExtraction() const;
+
+        /// is the clip a nominal 'mask' clip
+        bool supportsTiles() const;
+
+        /// get property set, const version
+        const Property::Set &getProps() const;
+
+        /// get property set , non const version
+        Property::Set &getProps(); 
+
+        /// get a handle on the properties of the clip descriptor for the C api
+        OfxPropertySetHandle getPropHandle() const;
+
+        /// get a handle on the clip descriptor/instance for the C api
+        OfxImageClipHandle getHandle() const;
+
+        virtual bool verifyMagic() {
+          return true;
+        }
+      };
+      
+        /// a clip descriptor
+      class ClipDescriptor : public ClipBase {
+      public:
+        /// constructor
+        ClipDescriptor(const std::string &name);
+        
+        /// is the clip an output clip
+        bool isOutput() const {return  getName() == kOfxImageEffectOutputClipName; }
+      };
+
+      /// a clip instance
+      class ClipInstance : public ClipBase
+                         , protected Property::GetHook
+                         , protected Property::NotifyHook {
+      protected:
+        ImageEffect::Instance*  _effectInstance; ///< image effect instance
+        bool  _isOutput;                         ///< are we the output clip
+        std::string             _pixelDepth;     ///< what is the bit depth we is at. Set during the clip prefernces action.
+        std::string             _components;     ///< what components do we have.  Set during the clip prefernces action.
+        
+      public:
+        ClipInstance(ImageEffect::Instance* effectInstance, ClipDescriptor& desc);
+        
+        /// is the clip an output clip
+        bool isOutput() const {return  _isOutput;}
+
+        /// notify override properties
+        virtual void notify(const std::string &name, bool isSingle, int indexOrN);
+        
+        /// get hook override
+        virtual void reset(const std::string &name);
+
+        // get the virtuals for viewport size, pixel scale, background colour
+        virtual double getDoubleProperty(const std::string &name, int index) const;
+
+        // get the virtuals for viewport size, pixel scale, background colour
+        virtual void getDoublePropertyN(const std::string &name, double *values, int count) const;
+
+        // get the virtuals for viewport size, pixel scale, background colour
+        virtual int getIntProperty(const std::string &name, int index) const;
+
+        // get the virtuals for viewport size, pixel scale, background colour
+        virtual void getIntPropertyN(const std::string &name, int *values, int count) const;
+
+        // get the virtuals for viewport size, pixel scale, background colour
+        virtual const std::string &getStringProperty(const std::string &name, int index) const;
+                             
+        // fetch  multiple values in a multi-dimension property
+        virtual void getStringPropertyN(const std::string &name, const char** values, int count) const;
+
+        // get hook virtuals
+        virtual int  getDimension(const std::string &name) const;
+
+        // instance changed action
+        OfxStatus instanceChangedAction(const std::string &why,
+                                        OfxTime     time,
+                                        OfxPointD   renderScale);
+
+        // properties of an instance that are live
+
+        /// Pixel Depth - fetch depth of all chromatic component in this clip
+        ///
+        ///  kOfxBitDepthNone (implying a clip is unconnected, not valid for an image)
+        ///  kOfxBitDepthByte
+        ///  kOfxBitDepthShort
+        ///  kOfxBitDepthHalf
+        ///  kOfxBitDepthFloat
+        const std::string &getPixelDepth() const
+        {
+          return _pixelDepth;
+        }
+
+        /// set the current pixel depth
+        /// called by clip preferences action 
+        void setPixelDepth(const std::string &s)
+        {
+          _pixelDepth =  s;
+        }
+
+        /// Components that can be fetched from this clip -
+        ///
+        /// kOfxImageComponentNone (implying a clip is unconnected, not valid for an image)
+        /// kOfxImageComponentRGBA
+        /// kOfxImageComponentRGB
+        /// kOfxImageComponentAlpha
+        /// and any custom ones you may think of
+        virtual const std::string &getComponents() const;
+
+        /// set the current set of components
+        /// called by clip preferences action 
+        virtual void setComponents(const std::string &s);
+                             
+        /// Get the Raw Unmapped Pixel Depth from the host for chromatic planes
+        ///
+        /// \returns
+        ///    - kOfxBitDepthNone (implying a clip is unconnected image)
+        ///    - kOfxBitDepthByte
+        ///    - kOfxBitDepthShort
+        ///    - kOfxBitDepthHalf
+        ///    - kOfxBitDepthFloat
+        virtual const std::string &getUnmappedBitDepth() const = 0;
+
+        /// Get the Raw Unmapped Components from the host
+        ///
+        /// \returns
+        ///     - kOfxImageComponentNone (implying a clip is unconnected, not valid for an image)
+        ///     - kOfxImageComponentRGBA
+        ///     - kOfxImageComponentAlpha
+        virtual const std::string &getUnmappedComponents() const = 0;
+
+        // PreMultiplication -
+        //
+        //  kOfxImageOpaque - the image is opaque and so has no premultiplication state
+        //  kOfxImagePreMultiplied - the image is premultiplied by it's alpha
+        //  kOfxImageUnPreMultiplied - the image is unpremultiplied
+        virtual const std::string &getPremult() const = 0;
+
+        // Pixel Aspect Ratio -
+        //
+        //  The pixel aspect ratio of a clip or image.
+        virtual double getAspectRatio() const = 0;
+
+        // Frame Rate -
+        //
+        //  The frame rate of a clip or instance's project.
+        virtual double getFrameRate() const = 0;
+
+        // Frame Range (startFrame, endFrame) -
+        //
+        //  The frame range over which a clip has images.
+        virtual void getFrameRange(double &startFrame, double &endFrame) const = 0;
+
+        /// Field Order - Which spatial field occurs temporally first in a frame.
+        /// \returns 
+        ///  - kOfxImageFieldNone - the clip material is unfielded
+        ///  - kOfxImageFieldLower - the clip material is fielded, with image rows 0,2,4.... occuring first in a frame
+        ///  - kOfxImageFieldUpper - the clip material is fielded, with image rows line 1,3,5.... occuring first in a frame
+        virtual const std::string &getFieldOrder() const = 0;
+        
+        // Connected -
+        //
+        //  Says whether the clip is actually connected at the moment.
+        virtual bool getConnected() const = 0;
+
+        // Unmapped Frame Rate -
+        //
+        //  The unmapped frame rate.
+        virtual double getUnmappedFrameRate() const = 0;
+
+        // Unmapped Frame Range -
+        //
+        //  The unmapped frame range over which an output clip has images.
+        virtual void getUnmappedFrameRange(double &unmappedStartFrame, double &unmappedEndFrame) const = 0;
+
+        // Continuous Samples -
+        //
+        //  0 if the images can only be sampled at discreet times (eg: the clip is a sequence of frames),
+        //  1 if the images can only be sampled continuously (eg: the clip is infact an animating roto spline and can be rendered anywhen). 
+        virtual bool getContinuousSamples() const = 0;
+
+        /// override this to fill in the image at the given time.
+        /// The bounds of the image on the image plane should be 
+        /// 'appropriate', typically the value returned in getRegionsOfInterest
+        /// on the effect instance. Outside a render call, the optionalBounds should
+        /// be 'appropriate' for the.
+        /// If bounds is not null, fetch the indicated section of the canonical image plane.
+        virtual ImageEffect::Image* getImage(OfxTime time, const OfxRectD *optionalBounds) = 0;
+                             
+#     ifdef OFX_SUPPORTS_OPENGLRENDER
+        /// override this to fill in the OpenGL texture at the given time.
+        /// The bounds of the image on the image plane should be 
+        /// 'appropriate', typically the value returned in getRegionsOfInterest
+        /// on the effect instance. Outside a render call, the optionalBounds should
+        /// be 'appropriate' for the.
+        /// If bounds is not null, fetch the indicated section of the canonical image plane.
+        virtual ImageEffect::Texture* loadTexture(OfxTime time, const char *format, const OfxRectD *optionalBounds) = 0;
+#     endif
+
+        /// override this to return the rod on the clip
+        virtual OfxRectD getRegionOfDefinition(OfxTime time) const = 0;
+
+        /// given the colour component, find the nearest set of supported colour components
+        /// override this for extra wierd custom component depths
+        virtual const std::string &findSupportedComp(const std::string &s) const;
+      };
+
+      
+      /// instance of an image inside an image effect
+      class ImageBase : public Property::Set {
+      protected :
+        /// called during ctors to get bits from the clip props into ours
+        void getClipBits(ClipInstance& instance);
+        int _referenceCount; ///< reference count on this image
+
+      public:
+        // default constructor
+        virtual ~ImageBase();
+        
+        /// basic ctor, makes empty property set but sets not value
+        ImageBase();
+
+        /// construct from a clip instance, but leave the
+        /// filling it to the calling code via the propery set
+        explicit ImageBase(ClipInstance& instance);
+
+        // Render Scale (renderScaleX,renderScaleY) -
+        //
+        // The proxy render scale currently being applied.
+        // ------
+        // Bounds (bx1,by1,bx2,by2) -
+        //
+        // The bounds of an image's pixels. The bounds, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // ROD (rodx1,rody1,rodx2,rody2) -
+        //
+        // The full region of definition. The ROD, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // Row Bytes -
+        //
+        // The number of bytes in a row of an image.
+        // ------
+        // Field -
+        //
+        // kOfxImageFieldNone - the image is an unfielded frame
+        // kOfxImageFieldBoth - the image is fielded and contains both interlaced fields
+        // kOfxImageFieldLower - the image is fielded and contains a single field, being the lower field (rows 0,2,4...)
+        // kOfxImageFieldUpper - the image is fielded and contains a single field, being the upper field (rows 1,3,5...)        
+        // ------
+        // Unique Identifier -
+        //
+        // Uniquely labels an image. This is host set and allows a plug-in to differentiate between images. This is 
+        // especially useful if a plugin caches analysed information about the image (for example motion vectors). The 
+        // plugin can label the cached information with this identifier. If a user connects a different clip to the 
+        // analysed input, or the image has changed in some way then the plugin can detect this via an identifier change
+        // and re-evaluate the cached information. 
+
+        // construction based on clip instance
+        ImageBase(ClipInstance& instance,     // construct from clip instance taking pixel depth, components, pre mult and aspect ratio
+              double renderScaleX, 
+              double renderScaleY,
+              const OfxRectI &bounds,
+              const OfxRectI &rod,
+              int rowBytes,
+              std::string field,
+              std::string uniqueIdentifier);
+
+        // OfxImageClipHandle getHandle();
+        OfxPropertySetHandle getPropHandle() const { return Property::Set::getHandle(); }
+
+        /// get the bounds of the pixels in memory
+        OfxRectI getBounds() const;
+
+        /// get the full region of this image
+        OfxRectI getROD() const;
+
+        /// release the reference count, which, if zero, deletes this
+        void releaseReference();
+
+        /// add a reference to this image
+        void addReference() {_referenceCount++;}
+      };
+
+      /// instance of an image inside an image effect
+      class Image : public ImageBase {
+      public:
+        // default constructor
+        virtual ~Image();
+        
+        /// basic ctor, makes empty property set but sets not value
+        Image();
+
+        /// construct from a clip instance, but leave the
+        /// filling it to the calling code via the propery set
+        explicit Image(ClipInstance& instance);
+
+        // Render Scale (renderScaleX,renderScaleY) -
+        //
+        // The proxy render scale currently being applied.
+        // ------
+        // Data -
+        //
+        // The pixel data pointer of an image.
+        // ------
+        // Bounds (bx1,by1,bx2,by2) -
+        //
+        // The bounds of an image's pixels. The bounds, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // ROD (rodx1,rody1,rodx2,rody2) -
+        //
+        // The full region of definition. The ROD, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // Row Bytes -
+        //
+        // The number of bytes in a row of an image.
+        // ------
+        // Field -
+        //
+        // kOfxImageFieldNone - the image is an unfielded frame
+        // kOfxImageFieldBoth - the image is fielded and contains both interlaced fields
+        // kOfxImageFieldLower - the image is fielded and contains a single field, being the lower field (rows 0,2,4...)
+        // kOfxImageFieldUpper - the image is fielded and contains a single field, being the upper field (rows 1,3,5...)        
+        // ------
+        // Unique Identifier -
+        //
+        // Uniquely labels an image. This is host set and allows a plug-in to differentiate between images. This is 
+        // especially useful if a plugin caches analysed information about the image (for example motion vectors). The 
+        // plugin can label the cached information with this identifier. If a user connects a different clip to the 
+        // analysed input, or the image has changed in some way then the plugin can detect this via an identifier change
+        // and re-evaluate the cached information. 
+
+        // construction based on clip instance
+        Image(ClipInstance& instance,     // construct from clip instance taking pixel depth, components, pre mult and aspect ratio
+              double renderScaleX, 
+              double renderScaleY,
+              void* data,
+              const OfxRectI &bounds,
+              const OfxRectI &rod,
+              int rowBytes,
+              std::string field,
+              std::string uniqueIdentifier);
+      };
+
+#   ifdef OFX_SUPPORTS_OPENGLRENDER
+      /// instance of an OpenGL texture inside an image effect
+      class Texture : public ImageBase {
+      public:
+        // default constructor
+        virtual ~Texture();
+        
+        /// basic ctor, makes empty property set but sets not value
+        Texture();
+
+        /// construct from a clip instance, but leave the
+        /// filling it to the calling code via the propery set
+        explicit Texture(ClipInstance& instance);
+
+        // Render Scale (renderScaleX,renderScaleY) -
+        //
+        // The proxy render scale currently being applied.
+        // ------
+        // Index -
+        //
+        // The texture id (cast to GLuint).
+        // ------
+        // Target -
+        //
+        // The texture target (cast to GLenum).
+        // ------
+        // Bounds (bx1,by1,bx2,by2) -
+        //
+        // The bounds of an image's pixels. The bounds, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // ROD (rodx1,rody1,rodx2,rody2) -
+        //
+        // The full region of definition. The ROD, in PixelCoordinates, are of the 
+        // addressable pixels in an image's data pointer. The order of the values is 
+        // x1, y1, x2, y2. X values are x1 &lt;= X &lt; x2 Y values are y1 &lt;= Y &lt; y2 
+        // ------
+        // Row Bytes -
+        //
+        // The number of bytes in a row of an image.
+        // ------
+        // Field -
+        //
+        // kOfxImageFieldNone - the image is an unfielded frame
+        // kOfxImageFieldBoth - the image is fielded and contains both interlaced fields
+        // kOfxImageFieldLower - the image is fielded and contains a single field, being the lower field (rows 0,2,4...)
+        // kOfxImageFieldUpper - the image is fielded and contains a single field, being the upper field (rows 1,3,5...)        
+        // ------
+        // Unique Identifier -
+        //
+        // Uniquely labels an image. This is host set and allows a plug-in to differentiate between images. This is 
+        // especially useful if a plugin caches analysed information about the image (for example motion vectors). The 
+        // plugin can label the cached information with this identifier. If a user connects a different clip to the 
+        // analysed input, or the image has changed in some way then the plugin can detect this via an identifier change
+        // and re-evaluate the cached information. 
+
+        // construction based on clip instance
+        Texture(ClipInstance& instance,     // construct from clip instance taking pixel depth, components, pre mult and aspect ratio
+                double renderScaleX,
+                double renderScaleY,
+                int index,
+                int target,
+                const OfxRectI &bounds,
+                const OfxRectI &rod,
+                int rowBytes,
+                std::string field,
+                std::string uniqueIdentifier);
+      };
+#   endif
+    } // Memory
+
+  } // Host
+
+} // OFX
+
+#endif // OFX_CLIP_H

third_party/openfx/HostSupport/include/ofxhHost.h

@@ -0,0 +1,84 @@
+
+#ifndef OFX_HOST_H
+#define OFX_HOST_H
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include <map>
+#include <string>
+#include <cstdarg>
+
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+#include "ofxTimeLine.h"
+#include "ofxhPropertySuite.h"
+
+namespace OFX {
+
+  namespace Host {
+
+    /// a plugin what we use
+    class Plugin;
+   
+    /// a param descriptor 
+    namespace Param {
+      class Descriptor;
+    }
+    
+    /// Base class for all objects passed to a plugin by the 'setHost' function 
+    /// passed back by any plug-in.
+    class Host {
+    protected :
+      OfxHost       _host;
+      Property::Set _properties;
+
+    public:
+      Host();
+      virtual ~Host() {}
+
+      
+      /// get the props on this host
+      Property::Set &getProperties() {return _properties; }
+
+      /// fetch a suite
+      /// The base class returns the following suites
+      ///    PropertySuite
+      ///    MemorySuite
+      virtual const void *fetchSuite(const char *suiteName, int suiteVersion);
+      
+      /// get the C API handle that is passed across the API to represent this host
+      OfxHost *getHandle();
+
+      /// override this to handle do post-construction initialisation on a Param::Descriptor
+      virtual void initParamDescriptor(Param::Descriptor *) { }
+
+      /// is my magic number valid?
+      bool verifyMagic() { return true; }
+
+      /// message (called when an exception occurs, calls vmessage)
+      OfxStatus message(const char* type,
+                        const char* id,
+                        const char* format,
+                        ...);
+
+      /// vmessage
+      virtual OfxStatus vmessage(const char* type,
+                                 const char* id,
+                                 const char* format,
+                                 va_list args) = 0;
+
+      /// setPersistentMessage
+      virtual OfxStatus setPersistentMessage(const char* type,
+                                             const char* id,
+                                             const char* format,
+                                             va_list args) = 0;
+      /// clearPersistentMessage
+      virtual OfxStatus clearPersistentMessage() = 0;
+    };
+    
+  }
+}
+
+#endif
+

third_party/openfx/HostSupport/include/ofxhImageEffect.h

@@ -0,0 +1,679 @@
+
+
+
+#ifndef OFX_IMAGE_EFFECT_H
+#define OFX_IMAGE_EFFECT_H
+
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+
+#include "ofxhHost.h"
+#include "ofxhClip.h"
+#include "ofxhProgress.h"
+#include "ofxhTimeLine.h"
+#include "ofxhParam.h"
+#include "ofxhMemory.h"
+#include "ofxhInteract.h"
+
+#ifdef _MSC_VER
+//Use visual studio extension
+#define __PRETTY_FUNCTION__ __FUNCSIG__
+#endif
+
+namespace OFX {
+
+  namespace Host {
+
+    // forward declare    
+    class Plugin;
+
+    namespace Memory {
+      class Instance;
+    }
+
+    namespace ImageEffect {
+
+      // forward declare
+      class ImageEffectPlugin;
+      class OverlayInstance;
+      class Instance;
+      class Descriptor;
+
+      /// An image effect host, passed to the setHost function of all image effect plugins
+      class Host : public OFX::Host::Host {
+      public :
+        Host();
+
+        /// fetch a suite
+        virtual const void *fetchSuite(const char *suiteName, int suiteVersion);
+
+        /// Create a new instance of an image effect plug-in.
+        ///
+        /// It is called by ImageEffectPlugin::createInstance which the
+        /// client code calls when it wants to make a new instance.
+        /// 
+        ///   \arg clientData - the clientData passed into the ImageEffectPlugin::createInstance
+        ///   \arg plugin - the plugin being created
+        ///   \arg desc - the descriptor for that plugin
+        ///   \arg context - the context to be created in
+        virtual Instance* newInstance(void* clientData,
+                                      ImageEffectPlugin* plugin,
+                                      Descriptor& desc,
+                                      const std::string& context) = 0;
+
+        /// Function called as each plugin binary is found and loaded from disk
+        ///
+        /// Use this in any dialogue etc... showing progress
+        virtual void loadingStatus(const std::string &);
+        
+        /// Override this to filter out plugins which the host can't support for whatever reason
+        ///
+        ///   \arg plugin - the plugin to examine
+        ///   \arg reason - set this to report the reason the plugin was not loaded
+        virtual bool pluginSupported(ImageEffectPlugin *plugin, std::string &reason) const;
+
+        /// Override this to create a descriptor, this makes the 'root' descriptor
+        virtual Descriptor *makeDescriptor(ImageEffectPlugin* plugin) = 0;
+
+        /// used to construct a context description, rootContext is the main context
+        virtual Descriptor *makeDescriptor(const Descriptor &rootContext, ImageEffectPlugin *plug) = 0;        
+
+        /// used to construct populate the cache
+        virtual Descriptor *makeDescriptor(const std::string &bundlePath, ImageEffectPlugin *plug) = 0;
+
+        /// Override this to initialise an image effect descriptor after it has been
+        /// created.
+        virtual void initDescriptor(Descriptor* desc);
+
+#ifdef OFX_SUPPORTS_MULTITHREAD
+        // these functions must be implemented if the host supports OfxMultiThreadSuiteV1
+        // all the following functions are described in ofxMultiThread.h
+        //
+
+        /// @see OfxMultiThreadSuiteV1.multiThread()
+        virtual OfxStatus multiThread(OfxThreadFunctionV1 func,unsigned int nThreads, void *customArg) = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.multiThreadNumCPUS()
+        virtual OfxStatus multiThreadNumCPUS(unsigned int *nCPUs) const = 0;
+
+        /// @see OfxMultiThreadSuiteV1.multiThreadIndex()
+        virtual OfxStatus multiThreadIndex(unsigned int *threadIndex) const = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.multiThreadIsSpawnedThread()
+        virtual int multiThreadIsSpawnedThread() const = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.mutexCreate()
+        virtual OfxStatus mutexCreate(OfxMutexHandle *mutex, int lockCount) = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.mutexDestroy()
+        virtual OfxStatus mutexDestroy(const OfxMutexHandle mutex) = 0;
+
+        /// @see OfxMultiThreadSuiteV1.mutexLock()
+        virtual OfxStatus mutexLock(const OfxMutexHandle mutex) = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.mutexUnLock()
+        virtual OfxStatus mutexUnLock(const OfxMutexHandle mutex) = 0;
+          
+        /// @see OfxMultiThreadSuiteV1.mutexTryLock()
+        virtual OfxStatus mutexTryLock(const OfxMutexHandle mutex) = 0;
+#endif // OFX_SUPPORTS_MULTITHREAD
+
+#     ifdef OFX_SUPPORTS_OPENGLRENDER
+        /// @see OfxImageEffectOpenGLRenderSuiteV1.flushResources()
+        virtual OfxStatus flushOpenGLResources() const = 0;
+#     endif
+
+        /// override this to use your own memory instance - must inherrit from memory::instance
+        virtual Memory::Instance* newMemoryInstance(size_t nBytes);
+
+        // return an memory::instance calls makeMemoryInstance that can be overriden
+        Memory::Instance* imageMemoryAlloc(size_t nBytes);
+      };
+
+      /// our global host object, set when the plugin cache is created
+      extern Host *gImageEffectHost;
+
+      ////////////////////////////////////////////////////////////////////////////////
+      /// base class to both effect descriptors and instances
+      class Base {
+      protected:        
+        Property::Set   _properties;
+
+      public:
+        Base(const Property::Set &set);
+        Base(const Property::PropSpec * propSpec);
+        virtual ~Base();
+
+        /// is my magic number valid?
+        virtual bool verifyMagic() { return true; }
+
+        /// obtain a handle on this for passing to the C api
+        OfxImageEffectHandle getHandle() const;
+
+        /// get the properties set
+        Property::Set &getProps();
+
+        /// get the properties set, const version
+        const Property::Set &getProps() const;
+
+        /// name of the clip
+        const std::string &getShortLabel() const;
+        
+        /// name of the clip
+        const std::string &getLabel() const;
+        
+        /// name of the clip
+        const std::string &getLongLabel() const;
+
+        /// is the given context supported
+        bool isContextSupported(const std::string &s) const;
+
+        /// what is the name of the group the plug-in belongs to
+        const std::string &getPluginGrouping() const;
+
+        /// is the effect single instance
+        bool isSingleInstance() const;
+
+        /// what is the thread safety on this effect
+        const std::string &getRenderThreadSafety() const;
+
+        /// should the host attempt to managed multi-threaded rendering if it can
+        /// via tiling or some such
+        bool getHostFrameThreading() const;
+
+        /// get the overlay interact main entry if it exists
+        OfxPluginEntryPoint *getOverlayInteractMainEntry() const;
+
+        /// does the effect support images of differing sizes
+        bool supportsMultiResolution() const;
+
+        /// does the effect support tiled rendering
+        bool supportsTiles() const;
+
+        /// does this effect need random temporal access
+        bool temporalAccess() const;
+
+        /// is the given RGBA/A pixel depth supported by the effect
+        bool isPixelDepthSupported(const std::string &s) const;
+
+        /// when field rendering, does the effect need to be called
+        /// twice to render a frame in all circumstances (with different fields)
+        bool fieldRenderTwiceAlways() const;
+        
+        /// does the effect support multiple clip depths
+        bool supportsMultipleClipDepths() const;
+        
+        /// does the effect support multiple clip pixel aspect ratios
+        bool supportsMultipleClipPARs() const;
+        
+        /// does changing the named param re-tigger a clip preferences action
+        bool isClipPreferencesSlaveParam(const std::string &s) const;
+
+      };
+
+      /// an image effect plugin descriptor
+      class Descriptor 
+        : public Base
+        , public Param::SetDescriptor {
+      private :
+        // private CC
+        Descriptor(const Descriptor &other)
+          : Base(other._properties)
+          , Param::SetDescriptor()
+          , _plugin(other._plugin)
+        {}
+
+      protected:
+        Plugin                                 *_plugin;       ///< the plugin I belong to
+        std::map<std::string, ClipDescriptor*>  _clips;        ///< clips descriptors by name
+        std::vector<ClipDescriptor*>            _clipsByOrder; ///< clip descriptors in order of declaration
+        mutable Interact::Descriptor            _overlayDescriptor; ///< descriptor to use for overlays, it has delayed description
+
+      public:
+        /// used to construct the global description
+        Descriptor(Plugin *plug);
+        
+        /// used to construct a context description, 'other' is the main context
+        Descriptor(const Descriptor &rootContext, Plugin *plug);        
+        
+        /// used to construct populate the cache
+        Descriptor(const std::string &bundlePath, Plugin *plug);
+
+        /// dtor
+        virtual ~Descriptor();
+
+        /// implemented for Param::SetDescriptor
+        virtual Property::Set &getParamSetProps();
+
+        /// get the plugin I belong to
+        Plugin *getPlugin() const {return _plugin;}
+
+        /// create a new clip and add this to the clip map
+        virtual ClipDescriptor *defineClip(const std::string &name);
+
+        /// get the clips
+        const std::map<std::string, ClipDescriptor*> &getClips() const;
+
+        /// add a new clip
+        void addClip(const std::string &name, ClipDescriptor *clip);
+
+        /// get the clips in order of construction
+        const std::vector<ClipDescriptor*> &getClipsByOrder() const
+        {
+          return _clipsByOrder;
+        }
+
+        /// Get the interact description, this will also call describe on the interact
+        /// This will return NULL if there is not main entry point or if the description failed
+        /// otherwise it will return the described overlay
+        Interact::Descriptor &getOverlayDescriptor(int bitDepthPerComponent = 8, bool hasAlpha = false);
+      };      
+
+      /// a map used to specify needed frame ranges on set of clips
+      typedef std::map<ClipInstance *, std::vector<OfxRangeD> > RangeMap;
+
+      /// an image effect plugin instance.
+      ///
+      /// Client code needs to filling the pure virtuals in this.
+      class Instance : public Base,
+                       public Param::SetInstance,
+                       public Progress::ProgressI,
+                       public TimeLine::TimeLineI,
+                       private Property::NotifyHook, 
+                       private Property::GetHook
+      {
+      protected:
+        OFX::Host::ImageEffect::ImageEffectPlugin    *_plugin;
+        std::string                                   _context;
+        Descriptor                                   *_descriptor;
+        std::map<std::string, ClipInstance*>          _clips;
+        bool                                          _interactive;
+        bool                                          _created;
+
+        bool                                          _clipPrefsDirty; ///< do we need to re-run the clip prefs action
+        bool                                          _continuousSamples; ///< set by clip prefs
+        bool                                          _frameVarying; ///< set by clip prefs
+        std::string                                   _outputPreMultiplication;  ///< set by clip prefs
+        std::string                                   _outputFielding;  ///< set by clip prefs
+        double                                        _outputFrameRate; ///< set by clip prefs
+
+      public:        
+        /// constructor based on clip descriptor
+        Instance(ImageEffectPlugin* plugin,
+                 Descriptor         &other, 
+                 const std::string  &context,
+                 bool               interactive);
+
+        virtual ~Instance();
+
+        /// implemented for Param::SetInstance
+        virtual Property::Set &getParamSetProps();
+
+        /// implemented for Param::SetInstance
+        virtual void paramChangedByPlugin(Param::Instance *param);
+
+        /// get the descriptor for this instance
+        const Descriptor &getDescriptor() const {return *_descriptor;}
+
+        /// return the plugin this instance was created with
+        OFX::Host::ImageEffect::ImageEffectPlugin*getPlugin() const { return _plugin; }
+
+        /// return the context this instance was created with
+        const std::string &getContext() const { return _context; }
+
+        /// get the descriptor for this instance
+        Descriptor &getDescriptor() {return *_descriptor;}
+
+        /// get default output fielding. This is passed into the clip prefs action
+        /// and  might be mapped (if the host allows such a thing)
+        virtual const std::string &getDefaultOutputFielding() const = 0;
+
+        /// get output fielding as set in the clip preferences action.
+        const std::string &getOutputFielding() const {return _outputFielding; }
+
+        /// get output fielding as set in the clip preferences action.
+        const std::string &getOutputPreMultiplication() const {return _outputPreMultiplication; }
+
+        /// get the output frame rate, as set in the clip prefences action.
+        double getOutputFrameRate() const {return _outputFrameRate;}
+
+
+        /// called after construction to populate the various members
+        /// ideally should be called in the ctor, but it relies on 
+        /// virtuals so has to be delayed until after the effect is
+        /// constructed
+        OfxStatus populate();
+
+        /// get the nth clip, in order of declaration
+        ClipInstance* getNthClip(int index);
+
+        /// get the nth clip, in order of declaration
+        int getNClips() const
+        {
+          return int(_clips.size());
+        }
+
+        /// are the clip preferences currently dirty
+        bool areClipPrefsDirty() const {return _clipPrefsDirty;}
+
+        /// are all the non optional clips connected
+        bool checkClipConnectionStatus() const;
+
+        /// can this this instance render images at arbitrary times, not just frame boundaries
+        /// set by getClipPreferenceAction()
+        bool continuousSamples() const {return _continuousSamples;}
+
+        /// does this instance generate a different picture on a frame change, even if the
+        /// params and input images are exactly the same. eg: random noise generator
+        bool isFrameVarying() const {return _frameVarying;}
+
+        /// pure virtuals that must  be overriden
+        virtual ClipInstance* getClip(const std::string& name) const;
+
+        /// override this to make processing abort, return 1 to abort processing
+        virtual int abort();
+
+        /// override this to use your own memory instance - must inherrit from memory::instance
+        virtual Memory::Instance* newMemoryInstance(size_t nBytes);
+
+        // return an memory::instance calls makeMemoryInstance that can be overriden
+        Memory::Instance* imageMemoryAlloc(size_t nBytes);
+
+        /// make a clip
+        virtual ClipInstance* newClipInstance(ImageEffect::Instance* plugin,
+                                              ClipDescriptor* descriptor, 
+                                              int index) = 0;
+
+        /// message suite
+        virtual OfxStatus vmessage(const char* type,
+                                   const char* id,
+                                   const char* format,	
+                                   va_list args) = 0;  
+
+        virtual OfxStatus setPersistentMessage(const char* type,
+                                               const char* id,
+                                               const char* format,
+                                               va_list args) = 0;
+
+        virtual OfxStatus clearPersistentMessage() = 0;  
+
+
+        /// call the effect entry point
+        virtual OfxStatus mainEntry(const char *action, 
+                                    const void *handle, 
+                                    Property::Set *inArgs,
+                                    Property::Set *outArgs);
+
+        int upperGetDimension(const std::string &name);
+
+        /// overridden from Property::Notify
+        virtual void notify(const std::string &name, bool singleValue, int indexOrN);
+
+        /// overridden from gethook,  get the virutals for viewport size, pixel scale, background colour
+        virtual double getDoubleProperty(const std::string &name, int index) const;
+
+        /// overridden from gethook,  get the virutals for viewport size, pixel scale, background colour
+        virtual void getDoublePropertyN(const std::string &name, double *values, int count) const;
+        
+        /// overridden from gethook, don't know what to do
+        virtual void reset(const std::string &name);
+
+        //// overridden from gethook
+        virtual int getDimension(const std::string &name)  const;
+
+        //
+        // live parameters
+        //
+
+        // The size of the current project in canonical coordinates. 
+        // The size of a project is a sub set of the kOfxImageEffectPropProjectExtent. For example a 
+        // project may be a PAL SD project, but only be a letter-box within that. The project size is 
+        // the size of this sub window. 
+        virtual void getProjectSize(double& xSize, double& ySize) const = 0;
+
+        // The offset of the current project in canonical coordinates. 
+        // The offset is related to the kOfxImageEffectPropProjectSize and is the offset from the origin 
+        // of the project 'subwindow'. For example for a PAL SD project that is in letterbox form, the
+        // project offset is the offset to the bottom left hand corner of the letter box. The project 
+        // offset is in canonical coordinates. 
+        virtual void getProjectOffset(double& xOffset, double& yOffset) const = 0;
+
+        // The extent of the current project in canonical coordinates. 
+        // The extent is the size of the 'output' for the current project. See ProjectCoordinateSystems 
+        // for more infomation on the project extent. The extent is in canonical coordinates and only 
+        // returns the top right position, as the extent is always rooted at 0,0. For example a PAL SD 
+        // project would have an extent of 768, 576. 
+        virtual void getProjectExtent(double& xSize, double& ySize) const = 0;
+
+        // The pixel aspect ratio of the current project 
+        virtual double getProjectPixelAspectRatio() const = 0;
+
+        // The duration of the effect 
+        // This contains the duration of the plug-in effect, in frames. 
+        virtual double getEffectDuration() const = 0;
+
+        // For an instance, this is the frame rate of the project the effect is in. 
+        virtual double getFrameRate() const = 0;
+
+        /// This is called whenever a param is changed by the plugin so that
+        /// the recursive instanceChangedAction will be fed the correct frame 
+        virtual double getFrameRecursive() const = 0;
+
+        /// This is called whenever a param is changed by the plugin so that
+        /// the recursive instanceChangedAction will be fed the correct
+        /// renderScale
+        virtual void getRenderScaleRecursive(double &x, double &y) const = 0;
+
+        /// Get whether the component is a supported 'chromatic' component (RGBA or alpha) in
+        /// the base API.
+        /// Override this if you have extended your chromatic colour types (eg RGB) and want
+        /// the clip preferences logic to still work
+        virtual bool isChromaticComponent(const std::string &str) const;
+
+        /// function to check for multiple bit depth support
+        /// The answer will depend on host, plugin and context
+        virtual bool canCurrentlyHandleMultipleClipDepths() const;
+
+        /// calculate the default rod for this effect instance
+        virtual OfxRectD calcDefaultRegionOfDefinition(OfxTime  time,
+                                                       OfxPointD   renderScale) const;
+
+        //
+        // actions
+        //
+
+        /// this is used to populate with any extra action in argumnents that may be needed
+        virtual void setCustomInArgs(const std::string &action, Property::Set &inArgs);
+        
+        /// this is used to populate with any extra action out argumnents that may be needed
+        virtual void setCustomOutArgs(const std::string &action, Property::Set &outArgs);
+        
+        /// this is used retrieve any out args after the action was called in mainEntry
+        virtual void examineOutArgs(const std::string &action, OfxStatus stat, const Property::Set &outArgs);
+        
+        /// create an instance. This needs to be called _after_ construction and
+        /// _after_ the host populates it's params and clips with the 'correct'
+        /// values (either persisted ones or the defaults)
+        virtual OfxStatus createInstanceAction();
+
+        // begin/change/end instance changed
+
+        //
+        // why -
+        //
+        // kOfxChangeUserEdited   - the user or host changed the instance somehow and 
+        //                          caused a change to something, this includes undo/redos, 
+        //                          resets and loading values from files or presets,
+        // kOfxChangePluginEdited - the plugin itself has changed the value of the instance 
+        //                          in some action
+        // kOfxChangeTime         - the time has changed and this has affected the value 
+        //                          of the object because it varies over time
+        //
+        virtual OfxStatus beginInstanceChangedAction(const std::string &why);
+
+        virtual OfxStatus paramInstanceChangedAction(const std::string &paramName,
+                                                     const std::string & why,
+                                                     OfxTime     time,
+                                                     OfxPointD   renderScale);
+
+        virtual OfxStatus clipInstanceChangedAction(const std::string &clipName,
+                                                     const std::string & why,
+                                                    OfxTime     time,
+                                                    OfxPointD   renderScale);
+
+        virtual OfxStatus endInstanceChangedAction(const std::string &why);
+
+        // purge your caches
+        virtual OfxStatus purgeCachesAction();
+
+        // sync your private data
+        virtual OfxStatus syncPrivateDataAction();
+
+        // begin/end edit instance
+        virtual OfxStatus beginInstanceEditAction();
+        virtual OfxStatus endInstanceEditAction();
+
+#     ifdef OFX_SUPPORTS_OPENGLRENDER
+        // attach/detach OpenGL context
+        virtual OfxStatus contextAttachedAction();
+        virtual OfxStatus contextDetachedAction();
+#     endif
+          
+        // render action
+        virtual OfxStatus beginRenderAction(OfxTime  startFrame,
+                                            OfxTime  endFrame,
+                                            OfxTime  step,
+                                            bool     interactive,
+                                            OfxPointD   renderScale,
+                                            bool     sequentialRender,
+                                            bool     interactiveRender
+                                            );
+
+        virtual OfxStatus renderAction(OfxTime      time,
+                                       const std::string &  field,
+                                       const OfxRectI &renderRoI,
+                                       OfxPointD   renderScale,
+                                       bool     sequentialRender,
+                                       bool     interactiveRender,
+                                       bool     draftRender
+                                       );
+
+        virtual OfxStatus endRenderAction(OfxTime  startFrame,
+                                          OfxTime  endFrame,
+                                          OfxTime  step,
+                                          bool     interactive,
+                                          OfxPointD   renderScale,
+                                          bool     sequentialRender,
+                                          bool     interactiveRender
+                                          );
+
+        /// Call the region of definition action the plugin at the given time
+        /// and with the given render scales. The value is returned in rod.
+        /// Note that if the plugin does not trap the action the default
+        /// RoD is calculated and returned. 
+        virtual OfxStatus getRegionOfDefinitionAction(OfxTime  time,
+                                                      OfxPointD   renderScale,
+                                                      OfxRectD &rod);
+        
+        /// call the get region of interest action on the plugin for the 
+        /// given frame and renderscale. The render RoI is passed in in
+        /// roi, the std::map will contain the requested rois. Note
+        /// That this call will check for tiling support and for
+        /// default replies and set up the correct rois in these cases
+        /// as well
+        virtual OfxStatus getRegionOfInterestAction(OfxTime  time,
+                                                    OfxPointD   renderScale,
+                                                    const OfxRectD &roi,
+                                                    std::map<ClipInstance *, OfxRectD> &rois);
+
+        // get frames needed to render the given frame
+        virtual OfxStatus getFrameNeededAction(OfxTime time, 
+                                               RangeMap &rangeMap);
+ 
+        // is identity
+        virtual OfxStatus isIdentityAction(OfxTime     &time,
+                                           const std::string &  field,
+                                           const OfxRectI  &renderRoI,
+                                           OfxPointD   renderScale,
+                                           std::string &clip);
+
+        // time domain
+        virtual OfxStatus getTimeDomainAction(OfxRangeD& range);
+
+        /// Get the interact description, this will also call describe on the interact
+        /// This will return NULL if there is not main entry point or if the description failed
+        /// otherwise it will return the described overlay
+        /// This is called by the CTOR of OverlayInteract to get the descriptor to do things with
+        Interact::Descriptor &getOverlayDescriptor(int bitDepthPerComponent = 8, bool hasAlpha = false);
+       
+        /// Setup the default clip preferences on the clips
+        virtual void setDefaultClipPreferences();
+
+        /// Initialise the clip preferences arguments, override this to do
+        /// stuff with wierd components etc... Calls setDefaultClipPreferences
+        virtual void setupClipPreferencesArgs(Property::Set &args);
+
+        /// Run the clip preferences action from the effect.
+        /// 
+        /// This will look into the input clips and output clip
+        /// and set the following properties that the effect should 
+        /// fetch the image at.
+        ///     - pixel depth
+        ///     - components
+        ///     - pixel aspect ratio
+        /// It will also set on the effect itselff
+        ///     - whether it is continuously samplable
+        ///     - the premult state of the output
+        ///     - whether the effect is frame varying
+        ///     - the fielding of the output clip
+        ///
+        /// This will be run automatically by the effect in the following situations...
+        ///     - an input clip is changed
+        ///     - a clip preferences slave param is changed
+        /// 
+        /// The host still needs to call this explicitly just after the effect is wired
+        /// up.
+        virtual bool getClipPreferences();
+
+        /// calls getClipPreferences only if the prefs are dirty
+        ///
+        /// returns whether the clips prefs were dirty or not
+        bool runGetClipPrefsConditionally()
+        {
+          if(areClipPrefsDirty()) {
+            getClipPreferences();
+            return true;
+          }
+          return false;
+        }
+        
+        /// find the best supported bit depth for the given one. Override this if you define
+        /// more depths
+        virtual const std::string &bestSupportedDepth(const std::string &depth) const;
+
+        /// find the most chromatic components out of the two. Override this if you define
+        /// more chromatic components
+        virtual const std::string &findMostChromaticComponents(const std::string &a, const std::string &b) const;
+      };
+
+      ////////////////////////////////////////////////////////////////////////////////
+      /// An overlay interact for image effects, derived from one of these to
+      /// be an overlay interact
+      class OverlayInteract : public Interact::Instance {
+      protected :
+        /// our image effect instance
+        ImageEffect::Instance &_instance;
+
+      public    :
+        /// ctor this calls Instance->getOverlayDescriptor to get the descriptor
+        OverlayInteract(ImageEffect::Instance &v, int bitDepthPerComponent = 8, bool hasAlpha = false);
+      };
+
+
+    } // namespace ImageEffect
+
+  } // namespace Host
+
+} // namespace OFX
+
+#endif // OFX_IMAGE_EFFECT_H

third_party/openfx/HostSupport/include/ofxhImageEffectAPI.h

@@ -0,0 +1,221 @@
+
+
+
+#ifndef OFXH_IMAGE_EFFECT_API_H
+#define OFXH_IMAGE_EFFECT_API_H
+
+#include "ofxhPluginAPICache.h"
+#include "ofxhPluginCache.h"
+#include <string>
+#include <map>
+#include <set>
+#include <memory>
+#include <utility>
+
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+#include "ofxhImageEffect.h"
+#include "ofxhHost.h"
+
+  
+  
+    
+    namespace OFX::Host::ImageEffect {
+
+      class PluginCache;
+
+      /// subclass of Plugin representing an ImageEffect plugin.  used to store API-specific
+      /// data
+      class ImageEffectPlugin : public Plugin {
+
+        PluginCache &_pc;
+
+        // this comes off Descriptor's property set after a describe
+        // context independent
+        Descriptor *_baseDescriptor; /// NEEDS TO BE MADE WITH A FACTORY FUNCTION ON THE HOST!!!!!!
+        
+        /// map to store contexts in
+        std::map<std::string, std::unique_ptr<Descriptor>> _contexts;
+
+        mutable std::set<std::string> _knownContexts;
+        mutable bool _madeKnownContexts;
+
+        std::unique_ptr<PluginHandle> _pluginHandle;
+
+        void addContextInternal(const std::string &context) const;
+
+      public:
+			  ImageEffectPlugin(PluginCache &pc, PluginBinary *pb, int pi, OfxPlugin *pl);
+
+        ImageEffectPlugin(PluginCache &pc,
+                          PluginBinary *pb,
+                          int pi,
+                          const std::string &api,
+                          int apiVersion,
+                          const std::string &pluginId,
+                          const std::string &rawId,
+                          int pluginMajorVersion,
+                          int pluginMinorVersion);
+
+        ~ImageEffectPlugin() override;
+
+        /// return the API handler this plugin was constructed by
+        APICache::PluginAPICacheI &getApiHandler() override;
+
+
+        /// get the base image effect descriptor
+        Descriptor &getDescriptor();
+
+        /// get the base image effect descriptor, const version
+        const Descriptor &getDescriptor() const;
+
+        /// get the image effect descriptor for the context
+        Descriptor *getContext(const std::string &context);
+
+        void addContext(const std::string &context);
+        void addContext(const std::string &context, std::unique_ptr<Descriptor> ied);
+
+        virtual void saveXML(std::ostream &os);
+
+        const std::set<std::string>& getContexts() const;
+
+        PluginHandle *getPluginHandle();
+
+        void unload();
+
+        /// this is called to make an instance of the effect
+        /// the client data ptr is what is passed back to the client creation function
+        ImageEffect::Instance* createInstance(const std::string &context, void *clientDataPtr);
+
+      };
+
+      class MajorPlugin {
+        std::string _id;
+        int _major;
+
+      public:
+        MajorPlugin(std::string id, int major) : _id(std::move(id)), _major(major) {
+        }
+
+        explicit MajorPlugin(ImageEffectPlugin *iep) : _id(iep->getIdentifier()), _major(iep->getVersionMajor()) {
+        }
+
+        [[nodiscard]] const std::string &getId() const {
+          return _id;
+        }
+
+        [[nodiscard]] int getMajor() const {
+          return _major;
+        }
+
+        bool operator<(const MajorPlugin &other) const {
+          if (_id < other._id)
+            return true;
+
+          if (_id > other._id)
+            return false;
+          
+          if (_major < other._major)
+            return true;
+
+          return false;
+        }
+      };
+
+      /// implementation of the specific Image Effect handler API cache.
+      class PluginCache : public APICache::PluginAPICacheI {
+      public:      
+
+      private:
+        /// all plugins
+        std::vector<ImageEffectPlugin *> _plugins;
+
+        /// latest version of each plugin by ID
+        std::map<std::string, ImageEffectPlugin *> _pluginsByID;
+
+        /// latest minor version of each plugin by (ID,major)
+        std::map<MajorPlugin, ImageEffectPlugin *> _pluginsByIDMajor;
+
+        /// xml parsing state
+        ImageEffectPlugin *_currentPlugin;
+        /// xml parsing state
+        Property::Property *_currentProp;
+        
+        Descriptor *_currentContext;
+        Param::Descriptor *_currentParam;
+        ClipDescriptor *_currentClip;
+
+        /// pointer to our image effect host
+        OFX::Host::ImageEffect::Host* _host;
+
+      public:  
+
+        explicit PluginCache(OFX::Host::ImageEffect::Host &host);
+
+        ~PluginCache() override;        
+
+        /// get the plugin by id.  vermaj and vermin can be specified.  if they are not it will
+        /// pick the highest found version.
+        ImageEffectPlugin *getPluginById(const std::string &id, int vermaj=-1, int vermin=-1);
+
+        /// get the plugin by label.  vermaj and vermin can be specified.  if they are not it will
+        /// pick the highest found version.
+        ImageEffectPlugin *getPluginByLabel(const std::string &label, int vermaj=-1, int vermin=-1);
+
+        OFX::Host::ImageEffect::Host *getHost() {
+          return _host;
+        }
+
+        [[nodiscard]] const std::vector<ImageEffectPlugin *>& getPlugins() const;
+
+        [[nodiscard]] const std::map<std::string, ImageEffectPlugin *>& getPluginsByID() const;
+
+        [[nodiscard]] const std::map<MajorPlugin, ImageEffectPlugin *>& getPluginsByIDMajor() const
+        {
+          return _pluginsByIDMajor;
+        }
+
+        /// handle the case where the info needs filling in from the file.  runs the "describe" action on the plugin.
+        void loadFromPlugin(Plugin *p) const override;
+        
+        /// handler for preparing to read in a chunk of XML from the cache, set up context to do this
+        void beginXmlParsing(Plugin *p) override;
+
+        /// XML handler : element begins (everything is stored in elements and attributes)       
+        void xmlElementBegin(const std::string &el, std::map<std::string, std::string> map) override;
+
+        void xmlCharacterHandler(const std::string &) override;
+        
+        void xmlElementEnd(const std::string &el) override;
+        
+        void endXmlParsing() override;
+        
+        void saveXML(Plugin *ip, std::ostream &os) const override;
+
+        void confirmPlugin(Plugin *p) override;
+
+        bool pluginSupported(Plugin *p, std::string &reason) const override;
+
+        Plugin *newPlugin(PluginBinary *pb,
+                          int pi,
+                          OfxPlugin *pl) override;
+
+        Plugin *newPlugin(PluginBinary *pb,
+                          int pi,
+                          const std::string &api,
+                          int apiVersion,
+                          const std::string &pluginId,
+                          const std::string &rawId,
+                          int pluginMajorVersion,
+                          int pluginMinorVersion) override;
+
+        void dumpToStdOut();
+      };
+    
+    } // ImageEffect
+
+  // Host
+
+// OFX
+
+#endif

third_party/openfx/HostSupport/include/ofxhInteract.h

@@ -0,0 +1,278 @@
+
+
+
+#ifndef OFX_INTERACT_H
+#define OFX_INTERACT_H
+
+#include "ofxInteract.h"
+#include "ofxOld.h" // old plugins may rely on deprecated properties being present
+#include "ofxhPropertySuite.h"
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace Interact {
+      
+      /// fetch a versioned suite for our interact
+      const void *GetSuite(int version);
+      
+      class Base {
+      public:
+        virtual ~Base() {
+        }
+
+        /// grab a handle on the parameter for passing to the C API
+        OfxInteractHandle getHandle() {return (OfxInteractHandle)this;}
+        
+        /// get the property handle for this instance/descriptor
+        virtual OfxPropertySetHandle getPropHandle() = 0;
+      };
+
+      /// state the interact can be in
+      enum State {
+        eUninitialised,
+        eDescribed,
+        eCreated,
+        eFailed
+      };
+  
+      /// Descriptor for an interact. Interacts all share a single description
+      class Descriptor : public Base {
+      protected:
+        Property::Set        _properties;  ///< its props
+        State                _state;       ///< how is it feeling today
+        OfxPluginEntryPoint *_entryPoint;  ///< the entry point for this overlay
+
+      public:
+        /// CTOR
+        Descriptor();
+
+        /// dtor
+        virtual ~Descriptor();
+
+        /// set the main entry points
+        void setEntryPoint(OfxPluginEntryPoint *entryPoint) {_entryPoint = entryPoint;}
+
+        /// call describe on this descriptor, returns true if all went well
+        bool describe(int bitDepthPerComponent, bool hasAlpha);
+
+        /// grab a handle on the properties of this parameter for the C api
+        OfxPropertySetHandle getPropHandle() {return _properties.getHandle();}
+
+        /// get prop set
+        const Property::Set &getProperties() const {return _properties;}
+
+        /// get a non const prop set
+        Property::Set &getProperties() {return _properties;}
+
+        /// call the entry point with action and the given args
+        OfxStatus callEntry(const char *action, 
+                            void *handle,
+                            OfxPropertySetHandle inArgs, 
+                            OfxPropertySetHandle outArgs);      
+
+        /// what is it's state?
+        State getState() const {return _state;}
+      };
+
+      /// a generic interact, it doesn't belong to anything in particular
+      /// we need to generify this slighty more and remove the renderscale args
+      /// into a derived class, as they only belong to image effect plugins
+      class Instance : public Base, protected Property::GetHook {
+      protected:
+        Descriptor   &_descriptor;  ///< who we are
+        Property::Set _properties;  ///< its props
+        State         _state;       ///< how is it feeling today
+        void         *_effectInstance; ///< this is ugly, we need a base class to all plugin instances at some point.
+        Property::Set _argProperties;
+
+        /// initialise the argument properties
+        void initArgProp(OfxTime time, 
+                         const OfxPointD   &renderScale);
+                
+        /// set pen props in the args
+        void setPenArgProps(const OfxPointD &penPos,
+                            const OfxPointI &penPosViewport,
+                            double  pressure);
+        
+        /// set key args in the props
+        void setKeyArgProps(int     key,
+                            char*   keyString);
+        
+      public:
+        Instance(Descriptor &desc, void *effectInstance);
+
+        virtual ~Instance();
+
+        /// what is it's state?
+        State getState() const {return _state;}
+
+        /// grab a handle on the properties of this parameter for the C api
+        OfxPropertySetHandle getPropHandle() {return _properties.getHandle();}
+
+        /// get prop set
+        const Property::Set &getProperties() const {return _properties;}
+
+        /// call the entry point in the descriptor with action and the given args
+        virtual OfxStatus callEntry(const char *action,
+                                    Property::Set *inArgs);
+        
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        /// hooks to kOfxInteractPropViewportSize in the property set
+        /// this is actually redundant and is to be deprecated
+        virtual void getViewportSize(double &width, double &height) const = 0;
+#endif
+
+        // hooks to live kOfxInteractPropPixelScale in the property set
+        virtual void getPixelScale(double& xScale, double& yScale) const = 0;
+
+        // hooks to kOfxInteractPropBackgroundColour in the property set
+        virtual void getBackgroundColour(double &r, double &g, double &b) const = 0;
+
+        // hooks to kOfxInteractPropSuggestedColour and kOfxPropOverlayColour in the property set
+        // return false if there is no color suggestion by the host.
+        virtual bool getSuggestedColour(double &r, double &g, double &b) const = 0;
+
+        /// implement
+        virtual OfxStatus swapBuffers() = 0;
+
+        /// implement this
+        virtual OfxStatus redraw() = 0;
+
+        /// returns the params the interact uses
+        virtual void getSlaveToParam(std::vector<std::string>& params) const;
+
+        // do nothing
+        virtual int  getDimension(const std::string &name) const;
+        
+        // don't know what to do
+        virtual void reset(const std::string &name);
+
+        /// the gethook virutals for  pixel scale, background colour
+        virtual double getDoubleProperty(const std::string &name, int index) const;
+
+        /// for pixel scale and background colour
+        virtual void getDoublePropertyN(const std::string &name, double *first, int n) const;
+
+        /// call create instance
+        virtual OfxStatus createInstanceAction();
+        
+        // interact action - kOfxInteractActionDraw 
+        // 
+        // Params -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        virtual OfxStatus drawAction(OfxTime time, const OfxPointD &renderScale);
+
+        // interact action - kOfxInteractActionPenMotion
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    penX              - the X position
+        //    penY              - the Y position
+        //    pressure          - the pen pressue 0 to 1
+        virtual OfxStatus penMotionAction(OfxTime time, 
+                                          const OfxPointD &renderScale,
+                                          const OfxPointD &penPos,
+                                          const OfxPointI &penPosViewport,
+                                          double pressure);
+
+        // interact action - kOfxInteractActionPenUp
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    penX              - the X position
+        //    penY              - the Y position
+        //    pressure          - the pen pressue 0 to 1
+        virtual OfxStatus penUpAction(OfxTime time, 
+                                      const OfxPointD &renderScale,
+                                      const OfxPointD &penPos,
+                                      const OfxPointI &penPosViewport,
+                                      double  pressure);
+
+        // interact action - kOfxInteractActionPenDown
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    penX              - the X position
+        //    penY              - the Y position
+        //    pressure          - the pen pressue 0 to 1
+        virtual OfxStatus penDownAction(OfxTime time, 
+                                        const OfxPointD &renderScale,
+                                        const OfxPointD &penPos,
+                                        const OfxPointI &penPosViewport,
+                                        double  pressure);
+
+        // interact action - kOfxInteractActionkeyDown
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    key               - the pressed key
+        //    keyString         - the pressed key string
+        virtual OfxStatus keyDownAction(OfxTime time, 
+                                        const OfxPointD &renderScale,
+                                        int     key,
+                                        char*   keyString);
+
+        // interact action - kOfxInteractActionkeyUp
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    key               - the pressed key
+        //    keyString         - the pressed key string
+        virtual OfxStatus keyUpAction(OfxTime time, 
+                                      const OfxPointD &renderScale,
+                                      int     key,
+                                      char*   keyString);
+
+        // interact action - kOfxInteractActionkeyRepeat
+        //
+        // Params  -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        //    key               - the pressed key
+        //    keyString         - the pressed key string
+        virtual OfxStatus keyRepeatAction(OfxTime time, 
+                                          const OfxPointD &renderScale,
+                                          int     key,
+                                          char*   keyString);
+
+        // interact action - kOfxInteractActionLoseFocus
+        // 
+        // Params -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        virtual OfxStatus gainFocusAction(OfxTime time, 
+                                          const OfxPointD &renderScale);
+
+        // interact action - kOfxInteractActionLoseFocus
+        // 
+        // Params -
+        //
+        //    time              - the effect time at which changed occured
+        //    renderScale       - the render scale
+        virtual OfxStatus loseFocusAction(OfxTime  time, 
+                                          const OfxPointD &renderScale);
+      };
+
+    } // Interact 
+
+  } // Host
+
+} // OFX
+
+#endif // OFX_INTERACT_H

third_party/openfx/HostSupport/include/ofxhMemory.h

@@ -0,0 +1,39 @@
+
+
+
+#ifndef OFX_MEMORY_H
+#define OFX_MEMORY_H
+
+#include "ofxImageEffect.h"
+namespace OFX {
+
+  namespace Host {
+
+    namespace Memory {
+
+      class Instance {
+      public:
+        Instance();
+
+        virtual ~Instance();        
+        virtual bool alloc(size_t nBytes);
+        virtual OfxImageMemoryHandle getHandle();
+        virtual void freeMem();
+        virtual void* getPtr();
+        virtual void lock();
+        virtual void unlock();
+
+        virtual bool verifyMagic() { return true; }
+
+      protected:
+        char*   _ptr;
+        int     _locked;
+      };
+
+    } // Memory
+
+  } // Host
+
+} // OFX
+
+#endif // OFX_MEMORY_H

third_party/openfx/HostSupport/include/ofxhParam.h

@@ -0,0 +1,678 @@
+
+
+
+#ifndef OFXH_PARAM_H
+#define OFXH_PARAM_H
+
+#include <string>
+#include <map>
+#include <list>
+#include <cstdarg>
+
+//ofx
+#include "ofxParam.h"
+
+//ofxh
+#include "ofxhPropertySuite.h"
+
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace Param {
+
+      /// fetch the param suite
+      const void *GetSuite(int version);
+
+      bool isColourParam(const std::string &paramType);
+
+      bool isIntParam(const std::string &paramType);
+
+      /// is this a standard type
+      bool isStandardType(const std::string &type);
+      
+      /// base class for all params
+      class Base {
+
+      private:
+        Base();
+      protected:
+        std::string   _paramName;
+        std::string   _paramType;
+        Property::Set _properties;        
+      public:
+        Base(const std::string &name, const std::string &type);
+        Base(const std::string &name, const std::string &type, const Property::Set &properties);
+        virtual ~Base();
+
+        /// grab a handle on the parameter for passing to the C API
+        OfxParamHandle getHandle() const;
+
+        virtual bool verifyMagic() { return true; }
+        
+        /// grab a handle on the properties of this parameter for the C api
+        OfxPropertySetHandle getPropHandle() const;
+
+        const Property::Set &getProperties() const;
+
+        Property::Set &getProperties();
+
+        const std::string &getType() const;
+
+        const std::string &getName() const;
+
+        const std::string &getParentName() const;
+
+        const std::string &getLabel() const;
+
+        const std::string &getShortLabel() const;
+
+        const std::string &getLongLabel() const;
+
+        const std::string &getScriptName() const;
+
+        const std::string &getDoubleType() const;
+
+        const std::string &getDefaultCoordinateSystem() const;
+
+        const std::string &getCacheInvalidation() const;
+
+        const std::string &getHint() const;
+
+        bool getEnabled() const;
+
+        bool getCanUndo() const;
+
+        bool getSecret() const;
+
+        bool getIsPersistant() const;
+
+        bool getEvaluateOnChange() const;
+
+        bool getCanAnimate() const;
+      };
+
+      /// the Descriptor of a plugin parameter
+      class Descriptor : public Base {
+        Descriptor();
+       
+      public:
+        /// make a parameter, with the given type and name
+        Descriptor(const std::string &type, const std::string &name);
+        
+        /// add standard param props, will call the below
+        void addStandardParamProps(const std::string &type);
+
+        /// add standard properties to a params that can take an interact
+        void addInteractParamProps(const std::string &type);
+
+        /// add standard properties to a value holding param
+        void addValueParamProps(const std::string &type, Property::TypeEnum valueType, int dim);
+
+        /// add standard properties to a value holding param
+        void addNumericParamProps(const std::string &type, Property::TypeEnum valueType, int dim);
+      };
+      
+      /// base class to the param set instance and param set descriptor
+      class BaseSet {
+      public:
+        virtual ~BaseSet();
+
+        /// obtain a handle on this set for passing to the C api
+        OfxParamSetHandle getParamSetHandle() const;
+
+        /// get the property handle that lives with the set
+        /// The plugin descriptor/instance that derives from
+        /// this will provide this.
+        virtual Property::Set &getParamSetProps() = 0;
+      };
+
+      /// a set of parameters
+      class SetDescriptor : public BaseSet {
+        std::map<std::string, Descriptor*> _paramMap;
+        std::list<Descriptor *> _paramList;
+        
+        /// CC doesn't exist
+        SetDescriptor(const SetDescriptor &);
+
+      public:
+        /// default ctor
+        SetDescriptor();
+
+        /// dtor
+        virtual ~SetDescriptor();
+
+        /// get the map of params
+        const std::map<std::string, Descriptor*> &getParams() const;
+
+        /// get the list of params
+        const std::list<Descriptor *> &getParamList() const;
+
+        /// define a param
+        virtual Descriptor *paramDefine(const char *paramType,
+                                        const char *name);
+
+        /// add a param in
+        virtual void addParam(const std::string &name, Descriptor *p);
+      };
+
+      // forward declare
+      class SetInstance;
+
+      /// the description of a plugin parameter
+      class Instance : public Base, protected Property::NotifyHook {
+        Instance();  
+      protected:
+        SetInstance*  _paramSetInstance;
+        Instance*     _parentInstance;
+      public:
+        virtual ~Instance();
+
+        /// make a parameter, with the given type and name
+        explicit Instance(Descriptor& descriptor, Param::SetInstance* instance = 0);
+
+        //        OfxStatus instanceChangedAction(const std::string &why,
+        //                                        OfxTime     time,
+        //                                        double      renderScaleX,
+        //                                        double      renderScaleY);
+
+        // get the param instance
+        OFX::Host::Param::SetInstance* getParamSetInstance() { return _paramSetInstance; }
+
+        // set/get parent instance
+        void setParentInstance(Instance* instance);
+        Instance* getParentInstance();
+
+        // copy one parameter to another, with a range (NULL means to copy all animation)
+        virtual OfxStatus copyFrom(const Instance &instance, OfxTime offset, const OfxRangeD* range);
+
+        // callback which should set enabled state as appropriate
+        virtual void setEnabled();
+
+        // callback which should set secret state as appropriate
+        virtual void setSecret();
+
+        /// callback which should update label
+        virtual void setLabel();
+
+        /// callback which should set range
+        virtual void setRange();
+
+        /// callback which should set display range
+        virtual void setDisplayRange();
+
+        /// callback which should set evaluate on change
+        virtual void setEvaluateOnChange();
+
+        // va list calls below turn the var args (oh what a mistake)
+        // suite functions into virtual function calls on instances
+        // they are not to be overridden by host implementors by
+        // by the various typeed param instances so that they can
+        // deconstruct the var args lists
+
+        /// get a value, implemented by instances to deconstruct var args
+        virtual OfxStatus getV(va_list arg);
+
+        /// get a value, implemented by instances to deconstruct var args
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// set a value, implemented by instances to deconstruct var args
+        virtual OfxStatus setV(va_list arg);
+
+        /// key a value, implemented by instances to deconstruct var args
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// derive a value, implemented by instances to deconstruct var args
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// integrate a value, implemented by instances to deconstruct var args
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+
+        /// overridden from Property::NotifyHook
+        virtual void notify(const std::string &name, bool single, int num);
+      };
+
+      class KeyframeParam {
+      public:
+        virtual OfxStatus getNumKeys(unsigned int &nKeys) const ;
+        virtual OfxStatus getKeyTime(int nth, OfxTime& time) const ;
+        virtual OfxStatus getKeyIndex(OfxTime time, int direction, int & index) const ;
+        virtual OfxStatus deleteKey(OfxTime time) ;
+        virtual OfxStatus deleteAllKeys() ;
+
+        virtual ~KeyframeParam() {
+        }
+      };
+
+      class GroupInstance : public Instance {
+      protected:
+        std::vector<Param::Instance*> _children;
+      public:
+        GroupInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        void setChildren(std::vector<Param::Instance*> children);
+        const std::vector<Param::Instance*> &getChildren() const;
+      };
+
+      class PageInstance : public Instance {
+      public:
+        PageInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+        const std::map<int,Param::Instance*> &getChildren() const;
+      protected :
+        mutable std::map<int,Param::Instance*> _children; // if set in a notify hook, this need not be mutable
+      };
+
+      class IntegerInstance : public Instance, public KeyframeParam {
+      public:
+        IntegerInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these 
+        virtual OfxStatus get(int&) = 0;
+        virtual OfxStatus get(OfxTime time, int&) = 0;
+        virtual OfxStatus set(int) = 0;
+        virtual OfxStatus set(OfxTime time, int) = 0;
+
+        // probably derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, int&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, int&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class ChoiceInstance : public Instance, public KeyframeParam {
+      public:
+        ChoiceInstance(Descriptor& descriptor, Param::SetInstance* instance = 0);
+
+        // callback which should set option as appropriate
+        virtual void setOption(int num);
+
+        // Deriving implementatation needs to overide these 
+        virtual OfxStatus get(int&) = 0;
+        virtual OfxStatus get(OfxTime time, int&) = 0;
+        virtual OfxStatus set(int) = 0;
+        virtual OfxStatus set(OfxTime time, int) = 0;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// overridden from Instance
+        virtual void notify(const std::string &name, bool single, int num);
+      };
+
+      class DoubleInstance : public Instance, public KeyframeParam {
+      public:
+        DoubleInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these 
+        virtual OfxStatus get(double&) = 0;
+        virtual OfxStatus get(OfxTime time, double&) = 0;
+        virtual OfxStatus set(double) = 0;
+        virtual OfxStatus set(OfxTime time, double) = 0;
+        virtual OfxStatus derive(OfxTime time, double&) = 0;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, double&) = 0;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class BooleanInstance : public Instance, public KeyframeParam {
+      public:
+        BooleanInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(bool&) = 0;
+        virtual OfxStatus get(OfxTime time, bool&) = 0;
+        virtual OfxStatus set(bool) = 0;
+        virtual OfxStatus set(OfxTime time, bool) = 0;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+      };
+
+      class RGBAInstance : public Instance, public KeyframeParam {
+      public:
+        RGBAInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(double&,double&,double&,double&) = 0;
+        virtual OfxStatus get(OfxTime time, double&,double&,double&,double&) = 0;
+        virtual OfxStatus set(double,double,double,double) = 0;
+        virtual OfxStatus set(OfxTime time, double,double,double,double) = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, double&,double&,double&,double&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, double&,double&,double&,double&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class RGBInstance : public Instance, public KeyframeParam {
+      public:
+        RGBInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(double&,double&,double&) = 0;
+        virtual OfxStatus get(OfxTime time, double&,double&,double&) = 0;
+        virtual OfxStatus set(double,double,double) = 0;
+        virtual OfxStatus set(OfxTime time, double,double,double) = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, double&,double&,double&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, double&,double&,double&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+        
+      class Double2DInstance : public Instance, public KeyframeParam {
+      public:
+        Double2DInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(double&,double&) = 0;
+        virtual OfxStatus get(OfxTime time, double&,double&) = 0;
+        virtual OfxStatus set(double,double) = 0;
+        virtual OfxStatus set(OfxTime time, double,double) = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, double&,double&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, double&,double&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class Integer2DInstance : public Instance, public KeyframeParam {
+      public:
+        Integer2DInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(int&,int&) = 0;
+        virtual OfxStatus get(OfxTime time, int&,int&) = 0;
+        virtual OfxStatus set(int,int) = 0;
+        virtual OfxStatus set(OfxTime time, int,int) = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, int&,int&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, int&,int&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class Double3DInstance : public Instance , public KeyframeParam{
+      public:
+        Double3DInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        // Deriving implementatation needs to overide these
+        virtual OfxStatus get(double&,double&,double&)  = 0;
+        virtual OfxStatus get(OfxTime time, double&,double&,double&)  = 0;
+        virtual OfxStatus set(double,double,double)  = 0;
+        virtual OfxStatus set(OfxTime time, double,double,double)  = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, double&,double&,double&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, double&,double&,double&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class Integer3DInstance : public Instance, public KeyframeParam {
+      public:
+        Integer3DInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        virtual OfxStatus get(int&,int&,int&) = 0;
+        virtual OfxStatus get(OfxTime time, int&,int&,int&) = 0;
+        virtual OfxStatus set(int,int,int) = 0;
+        virtual OfxStatus set(OfxTime time, int,int,int) = 0;
+
+        // derived class does not need to implement, default is an approximation
+        virtual OfxStatus derive(OfxTime time, int&,int&,int&) ;
+        virtual OfxStatus integrate(OfxTime time1, OfxTime time2, int&,int&,int&) ;
+
+        /// implementation of var args function
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus deriveV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus integrateV(OfxTime time1, OfxTime time2, va_list arg);
+      };
+
+      class StringInstance : public Instance, public KeyframeParam {
+        std::string _returnValue; ///< location to hold temporary return value. Should delegate this to implementation!!!
+      public:
+        StringInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+
+        virtual OfxStatus get(std::string &) = 0;
+        virtual OfxStatus get(OfxTime time, std::string &) = 0;
+        virtual OfxStatus set(const char*) = 0;
+        virtual OfxStatus set(OfxTime time, const char*) = 0;
+
+        /// implementation of var args function
+        /// Be careful: the char* is only valid until next API call
+        /// see http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#ArchitectureStrings
+        virtual OfxStatus getV(va_list arg);
+
+        /// implementation of var args function
+        /// Be careful: the char* is only valid until next API call
+        /// see http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#ArchitectureStrings
+        virtual OfxStatus getV(OfxTime time, va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(va_list arg);
+
+        /// implementation of var args function
+        virtual OfxStatus setV(OfxTime time, va_list arg);
+      };
+
+      class CustomInstance : public StringInstance {
+      public:
+        CustomInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : StringInstance(descriptor,instance) {}
+      };
+
+      class PushbuttonInstance : public Instance, public KeyframeParam {
+      public:
+        PushbuttonInstance(Descriptor& descriptor, Param::SetInstance* instance = 0) : Instance(descriptor,instance) {}
+      };
+
+      /// A set of parameters
+      ///
+      /// As we are the owning object we delete the params inside ourselves. It was tempting
+      /// to make params autoref objects and have shared ownership with the client code
+      /// but that adds complexity for no strong gain.
+      class SetInstance : public BaseSet {
+      protected:
+        std::map<std::string, Instance*> _params;        ///< params by name
+        std::list<Instance *>            _paramList;     ///< params list
+
+      public :
+        /// ctor
+        ///
+        /// The propery set being passed in belongs to the owning 
+        /// plugin instance.
+        explicit SetInstance();
+
+        /// dtor. 
+        virtual ~SetInstance();
+
+        /// get the params
+        const std::map<std::string, Instance*> &getParams() const;
+
+        /// get the params
+        const std::list<Instance*> &getParamList() const;
+
+        // get the param
+        Instance* getParam(const std::string &name) const {
+          std::map<std::string,Instance*>::const_iterator it = _params.find(name);
+          if(it!=_params.end())
+            return it->second;
+          else
+            return 0;
+        }
+
+        /// The inheriting plugin instance needs to set this up to deal with 
+        /// plug-ins changing their own values.
+        virtual void paramChangedByPlugin(Param::Instance *param) = 0;
+
+        /// add a param
+        virtual OfxStatus addParam(const std::string& name, Instance* instance);
+
+        /// make a parameter instance
+        ///
+        /// Client host code needs to implement this
+        virtual Instance* newParam(const std::string& name, Descriptor& Descriptor) = 0;        
+
+        /// Triggered when the plug-in calls OfxParameterSuiteV1::paramEditBegin
+        ///
+        /// Client host code needs to implement this
+        virtual OfxStatus editBegin(const std::string& name) = 0;
+
+        /// Triggered when the plug-in calls OfxParameterSuiteV1::paramEditEnd
+        ///
+        /// Client host code needs to implement this
+        virtual OfxStatus editEnd() = 0;
+
+      };
+    }
+  }
+}
+
+#endif // OFXH_PARAM_H

third_party/openfx/HostSupport/include/ofxhPluginAPICache.h

@@ -0,0 +1,87 @@
+
+
+#ifndef OFX_PLUGIN_API_CACHE
+#define OFX_PLUGIN_API_CACHE
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include <string>
+#include <iostream>
+#include <ostream>
+#include <map>
+
+#include "ofxhPropertySuite.h"
+
+namespace OFX
+{
+  namespace Host {
+    class Plugin;
+    class PluginBinary;
+    class PluginCache;
+
+    namespace ImageEffect {
+      class ImageEffectDescriptor;
+    }
+  }
+}
+
+namespace OFX
+{
+  namespace Host
+  {
+    namespace APICache {
+
+      /// this acts as an interface for the Plugin Cache, handling api-specific cacheing
+      class PluginAPICacheI
+      {
+      protected:
+        std::string _apiName;
+        int _apiVersionMin, _apiVersionMax;
+      public:
+        PluginAPICacheI(const std::string &apiName, int verMin, int verMax)
+          : _apiName(apiName)
+            , _apiVersionMin(verMin)
+            , _apiVersionMax(verMax)
+        {
+        }
+        
+        virtual ~PluginAPICacheI() {}
+        
+        virtual void loadFromPlugin(Plugin *) const = 0;
+
+        /// factory method, to create a new plugin (from binary)
+        virtual Plugin *newPlugin(PluginBinary *, int pi, OfxPlugin *plug) = 0;
+
+        /// factory method, to create a new plugin (from the 
+        virtual Plugin *newPlugin(PluginBinary *pb, int pi, const std::string &api, int apiVersion, const std::string &pluginId,
+                                  const std::string &rawId, int pluginMajorVersion, int pluginMinorVersion) = 0;
+
+        virtual void beginXmlParsing(Plugin *) = 0;
+        virtual void xmlElementBegin(const std::string &, std::map<std::string, std::string>) = 0;
+        virtual void xmlCharacterHandler(const std::string &) = 0;
+        virtual void xmlElementEnd(const std::string &) = 0;
+        virtual void endXmlParsing() = 0;
+        
+        virtual void saveXML(Plugin *, std::ostream &) const = 0;
+
+        virtual void confirmPlugin(Plugin *) = 0;
+
+        virtual bool pluginSupported(Plugin *, std::string &reason) const = 0;
+
+        void registerInCache(OFX::Host::PluginCache &pluginCache);
+      };
+      
+      /// helper function to build a property set from XML. Really should be a member of the property set!!!
+      void propertySetXMLRead(const std::string &el, std::map<std::string, std::string> map, Property::Set &set, Property::Property*&);
+
+      /// helper function to write a property set to XML. Really should be a member of the property set!!!
+      void propertySetXMLWrite(std::ostream &o, const Property::Set &set, int indent=0);
+
+      /// helper function to write a single property from a set to XML. Really should be a member of the property set!!!
+      void propertyXMLWrite(std::ostream &o, const Property::Set &set, const std::string &name, int indent=0);
+
+    }
+  }
+}
+#endif

third_party/openfx/HostSupport/include/ofxhPluginCache.h

@@ -0,0 +1,432 @@
+
+
+#ifndef OFX_PLUGIN_CACHE_H
+#define OFX_PLUGIN_CACHE_H
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include <string>
+#include <vector>
+#include <list>
+#include <set>
+#include <iostream>
+
+#include <stdio.h>
+
+#include "expat.h"
+
+#include "ofxCore.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhPluginAPICache.h"
+#include "ofxhBinary.h"
+
+namespace OFX {
+
+  namespace Host {
+
+    class Host;
+
+    // forward delcarations
+    class PluginDesc;   
+    class Plugin;
+    class PluginBinary;
+    class PluginCache;
+
+    /// C++ version of the information kept inside an OfxPlugin struct
+    class PluginDesc  {
+    protected :
+      std::string _pluginApi;  ///< the API I implement
+      int _apiVersion;         ///< the version of the API
+
+      std::string _identifier; ///< the identifier of the plugin
+      std::string _rawIdentifier; ///< the original identifier of the plugin
+      int _versionMajor;       ///< the plugin major version
+      int _versionMinor;       ///< the plugin minor version
+
+    public:
+
+      const std::string &getPluginApi() const {
+        return _pluginApi;
+      }
+      
+      int getApiVersion() const {
+        return _apiVersion;
+      }
+      
+      const std::string &getIdentifier() const {
+        return _identifier;
+      }
+
+      const std::string &getRawIdentifier() const {
+        return _rawIdentifier;
+      }
+      
+      int getVersionMajor() const {
+        return _versionMajor;
+      }
+      
+      int getVersionMinor() const  {
+        return _versionMinor;
+      }
+
+      PluginDesc() : _apiVersion(-1) {
+      }
+
+      virtual ~PluginDesc() {}
+
+      PluginDesc(const std::string &api,
+                 int apiVersion,
+                 const std::string &identifier,
+                 const std::string &rawIdentifier,
+                 int versionMajor,
+                 int versionMinor)
+        : _pluginApi(api)
+        , _apiVersion(apiVersion)
+        , _identifier(identifier)
+        , _rawIdentifier(rawIdentifier)
+        , _versionMajor(versionMajor)
+        , _versionMinor(versionMinor)
+      {
+      }
+
+
+      /// constructor for the case where we have already loaded the plugin binary and 
+      /// are populating this object from it
+      PluginDesc(OfxPlugin *ofxPlugin) {
+        _pluginApi = ofxPlugin->pluginApi;
+        _apiVersion = ofxPlugin->apiVersion;
+        _rawIdentifier = ofxPlugin->pluginIdentifier;
+        _identifier = ofxPlugin->pluginIdentifier;
+
+        // Who says the pluginIdentifier is case-insensitive? OFX 1.3 spec doesn't mention this.
+        // http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#id472588
+        //for (size_t i=0;i<_identifier.size();i++) {
+        //  _identifier[i] = tolower(_identifier[i]);
+        //}
+        _versionMajor = ofxPlugin->pluginVersionMajor;
+        _versionMinor = ofxPlugin->pluginVersionMinor;
+      }
+
+    };
+    
+    /// class that we use to manipulate a plugin
+    class Plugin : public PluginDesc {
+    /// owned by the PluginBinary it lives inside
+    /// Plugins can only be pass about either by pointer or reference
+    private :
+      Plugin(const Plugin&) : PluginDesc() {}                          ///< hidden
+      Plugin &operator= (const Plugin&) {return *this;} ///< hidden
+
+    protected :
+      PluginBinary *_binary; ///< the file I live inside
+      int           _index;  ///< where I live inside that file
+    public :
+      Plugin();
+
+      PluginBinary *getBinary()
+      {
+        return _binary;
+      }
+
+      const PluginBinary *getBinary() const
+      {
+        return _binary;
+      }
+
+      int getIndex() const
+      {
+        return _index;
+      }
+
+      /// construct this based on the struct returned by the getNthPlugin() in the binary
+      Plugin(PluginBinary *bin, int idx, OfxPlugin *o) : PluginDesc(o), _binary(bin), _index(idx)
+      {
+      }
+      
+      /// construct me from the cache
+      Plugin(PluginBinary *bin, int idx, const std::string &api,
+             int apiVersion, const std::string &identifier, 
+             const std::string &rawIdentifier,
+             int majorVersion, int minorVersion)
+        : PluginDesc(api, apiVersion, identifier, rawIdentifier, majorVersion, minorVersion)
+        , _binary(bin)
+        , _index(idx) 
+      {
+      }
+
+      virtual ~Plugin() {
+      }
+
+      virtual APICache::PluginAPICacheI &getApiHandler() = 0;
+
+      bool trumps(Plugin *other) {
+        int myMajor = getVersionMajor();
+        int theirMajor = other->getVersionMajor();
+
+        int myMinor = getVersionMinor();
+        int theirMinor = other->getVersionMinor();
+
+        if (myMajor > theirMajor) {
+          return true;
+        }
+        
+        if (myMajor == theirMajor && myMinor > theirMinor) {
+          return true;
+        }
+
+        return false;
+      }
+    };
+
+    class PluginHandle;
+
+    /// class that represents a binary file which holds plugins
+    class PluginBinary {
+    /// has a set of plugins inside it and which it owns
+    /// These are owned by a PluginCache
+      friend class PluginHandle;
+
+    protected :
+      Binary _binary;                 ///< our binary object, abstracted layer ontop of OS calls, defined in ofxhBinary.h
+      std::string _filePath;          ///< full path to the file
+      std::string _bundlePath;        ///< path to the .bundle directory
+      std::vector<Plugin *> _plugins; ///< my plugins
+      time_t _fileModificationTime;   ///< used as a time stamp to check modification times, used for caching
+      off_t _fileSize;                ///< file size last time we check, used for caching
+      bool _binaryChanged;            ///< whether the timestamp/filesize in this cache is different from that in the actual binary
+      
+    public :
+
+      /// create one from the cache.  this will invoke the Binary() constructor which
+      /// will stat() the file.
+      explicit PluginBinary(const std::string &file, const std::string &bundlePath, time_t mtime, off_t size)
+        : _binary(file)
+        , _filePath(file)
+        , _bundlePath(bundlePath)
+        , _fileModificationTime(mtime)
+        , _fileSize(size)
+        , _binaryChanged(false)
+      {
+        if (isInvalid()) {
+          return;
+        }
+        if (_fileModificationTime != _binary.getTime() || _fileSize != _binary.getSize()) {
+          _binaryChanged = true;
+        }
+      }
+
+
+      /// constructor which will open a library file, call things inside it, and then 
+      /// create Plugin objects as appropriate for the plugins exported therefrom
+      explicit PluginBinary(const std::string &file, const std::string &bundlePath, PluginCache *cache)
+        : _binary(file)
+        , _filePath(file)
+        , _bundlePath(bundlePath)
+        , _binaryChanged(false)
+      {
+        loadPluginInfo(cache);
+      }
+    
+      /// dtor
+      virtual ~PluginBinary();
+
+
+      time_t getFileModificationTime() const {
+      	return _fileModificationTime;
+      }
+    
+      off_t getFileSize() {
+      	return _fileSize;
+      }
+
+      const std::string &getFilePath() const {
+        return _filePath;
+      }
+      
+      const std::string &getBundlePath() const {
+        return _bundlePath;
+      }
+      
+      bool hasBinaryChanged() const {
+        return _binaryChanged;
+      }
+
+      bool isLoaded() const {
+        return _binary.isLoaded();
+      }
+        
+      bool isInvalid() const {
+        return _binary.isInvalid();
+      }
+
+      void addPlugin(Plugin *pe) {
+        _plugins.push_back(pe);
+      }
+
+      void loadPluginInfo(PluginCache *);
+
+      /// how many plugins?
+      int getNPlugins() const {return (int)_plugins.size(); }
+
+      /// get a plugin 
+      Plugin &getPlugin(int idx) {return *_plugins[idx];}
+
+      /// get a plugin 
+      const Plugin &getPlugin(int idx) const {return *_plugins[idx];}
+    };
+
+    /// wrapper class for Plugin/PluginBinary.  use in a RAIA fashion to make sure the binary gets unloaded when needed and not before.
+    class PluginHandle {
+      PluginBinary *_b;
+      OfxPlugin *_op;
+
+    public:
+      PluginHandle(Plugin *p, OFX::Host::Host *_host);
+      virtual ~PluginHandle();
+
+      OfxPlugin *getOfxPlugin() {
+        return _op;
+      }
+
+      OfxPlugin *operator->() {
+        return _op;
+      }
+    };
+    
+    /// for later 
+    struct PluginCacheSupportedApi {
+      std::string api;
+      int minVersion;
+      int maxVersion;
+      APICache::PluginAPICacheI *handler;
+
+      PluginCacheSupportedApi(const std::string &_api, int _minVersion, int _maxVersion, APICache::PluginAPICacheI *_handler) :
+        api(_api), minVersion(_minVersion), maxVersion(_maxVersion), handler(_handler)
+      {
+      }
+      
+      bool matches(const std::string &_api, int _version) const
+      {
+        if (_api == api && _version >= minVersion && _version <= maxVersion) {
+          return true;
+        }
+        return false;
+      }
+    };
+
+    /// Where we keep our plugins.    
+    class PluginCache {
+    protected :
+      OFX::Host::Property::PropSpec* _hostSpec;
+
+      std::list<std::string>    _pluginPath;  ///< list of directories to look in
+      std::set<std::string>     _nonrecursePath; ///< list of directories to look in (non-recursively)
+      std::list<std::string>    _pluginDirs;  ///< list of directories we found
+      std::list<PluginBinary *> _binaries; ///< all the binaries we know about, we own these
+      std::list<Plugin *>       _plugins;  ///< all the plugins inside the binaries, we don't own these, populated from _binaries
+      std::set<std::string>     _knownBinFiles;
+
+      PluginBinary *_xmlCurrentBinary;
+      Plugin *_xmlCurrentPlugin;
+
+      std::list<PluginCacheSupportedApi> _apiHandlers;
+
+      void scanDirectory(std::set<std::string> &foundBinFiles, const std::string &dir, bool recurse);
+
+      bool _ignoreCache;
+      std::string _cacheVersion;
+
+      bool _dirty;
+      bool _enablePluginSeek;       ///< Turn off to make all seekPluginFile() calls return an empty string
+
+      static PluginCache* gPluginCachePtr; ///< singleton plugin cache
+
+    public:
+      /// ctor, which inits _pluginPath to default locations and not much else
+      PluginCache();
+
+      /// dtor
+      ~PluginCache();
+
+      /// get our plugin cache
+      static PluginCache* getPluginCache();
+
+      /// clear our plugin cache
+      static void clearPluginCache();		
+
+      /// get the list in which plugins are sought
+      const std::list<std::string> &getPluginPath() {
+        return _pluginPath;
+      }
+
+      /// was the cache outdated?
+      bool dirty() const {
+        return _dirty;
+      }
+
+      /// add a file to the plugin path
+      void addFileToPath(const std::string &f, bool recurse=true) {
+        _pluginPath.push_back(f);
+        if (!recurse) {
+          _nonrecursePath.insert(f);
+        }
+      }
+
+      /// prepend a file to the plugin path
+      void prependFileToPath(const std::string &f, bool recurse=true) {
+        _pluginPath.push_front(f);
+        if (!recurse) {
+          _nonrecursePath.insert(f);
+        }
+      }
+
+      /// specify which subdirectory of /usr/OFX or equivilant
+      /// (as well as 'Plugins') to look in for plugins.
+      void setPluginHostPath(const std::string &hostId);
+
+      /// set the version string to write to the cache, 
+      /// and also that we expect on cachess read in
+      void setCacheVersion(const std::string &cacheVersion) {
+        _cacheVersion = cacheVersion;
+      }
+
+      // populate the cache.  must call scanPluginFiles() after to check for changes.
+      void readCache(std::istream &is);
+
+      // seek a particular file on the OFX plugin path
+      std::string seekPluginFile(const std::string &baseName) const;
+      
+      /// Sets behaviour of seekPluginFile().
+      /// Enable (the default): normal operation; disable: returns an empty string instead
+      void setPluginSeekEnabled(bool enabled) { _enablePluginSeek = enabled; }
+
+      /// scan for plugins
+      void scanPluginFiles();
+
+      // write the plugin cache output file to the given stream
+      void writePluginCache(std::ostream &os) const;
+      
+      // callback function for the XML
+      void elementBeginCallback(void *userData, const XML_Char *name, const XML_Char **attrs);
+      void elementCharCallback(void *userData, const XML_Char *data, int len);
+      void elementEndCallback(void *userData, const XML_Char *name);
+
+      /// register an API cache handler
+      void registerAPICache(const std::string &api, int min, int max, APICache::PluginAPICacheI *apiCache) {
+        _apiHandlers.push_back(PluginCacheSupportedApi(api, min, max, apiCache));
+      }
+      
+      /// find the API cache handler for the given api/apiverson
+      APICache::PluginAPICacheI* findApiHandler(const std::string &api, int apiver);
+
+      /// obtain a list of plugins to walk through
+      const std::list<Plugin *> &getPlugins() const {
+        return _plugins;
+      }
+    };
+
+  }
+}
+
+#endif

third_party/openfx/HostSupport/include/ofxhProgress.h

@@ -0,0 +1,34 @@
+
+
+
+#ifndef _ofxhProgress_h_
+#define _ofxhProgress_h_
+
+#include "ofxProgress.h"
+
+namespace OFX {
+  namespace Host {
+    namespace Progress {
+      
+      /// Things that display progress derive from this ABC and implement the following
+      /// functions.
+      class ProgressI {
+      public :
+        virtual ~ProgressI() {}
+
+        /// Start doing progress. 
+        virtual void progressStart(const std::string &message, const std::string &messageid) = 0;
+
+        /// finish yer progress
+        virtual void progressEnd() = 0;
+
+        /// set the progress to some level of completion, returns
+        /// false if you should abandon processing, true to continue
+        virtual bool progressUpdate(double t) = 0;        
+      };
+
+    } // namespace progress
+  } // namespace Host
+} // namespace OFX
+
+#endif

third_party/openfx/HostSupport/include/ofxhPropertySuite.h

@@ -0,0 +1,545 @@
+
+
+#ifndef OFX_PROPERTY_SUITE_H
+#define OFX_PROPERTY_SUITE_H
+#include "ofxCore.h"
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include <string>
+#include <vector>
+#include <map>
+#include <algorithm>
+#include <sstream>
+
+namespace OFX {
+	namespace Host {
+		namespace Property {
+			/// simple function to turn a thing into a std string
+			template<class T> inline std::string castToString(T i) {
+				std::ostringstream o;
+				o << i;
+				return o.str();
+			}
+
+			/// simple function to turn a string into an int
+			inline int stringToInt(const std::string &s) {
+				std::istringstream is(s);
+				int number;
+				is >> number;
+				return number;
+			}
+
+			/// simple function to turn a string into a double
+			inline double stringToDouble(const std::string &s) {
+				std::istringstream is(s);
+				double number;
+				is >> number;
+				return number;
+			}
+			
+			// forward declarations
+			class Property; 
+			class Set;
+
+			/// exception, representing an OfxStatus
+			class Exception {
+				OfxStatus _stat;
+
+			public:
+				/// ctor
+				Exception(OfxStatus stat) : _stat(stat)
+				{
+				}
+
+				/// get the status
+				OfxStatus getStatus() const
+				{
+					return _stat;
+				}
+			};
+
+			/// type of a property
+			enum TypeEnum {
+				eNone = -1,
+				eInt = 0,
+				eDouble = 1,
+				eString = 2,
+				ePointer = 3
+			};
+
+			/// type holder, for integers, used to template up int properties
+			struct IntValue { 
+				typedef int APIType; ///< C type of the property that is passed across the raw API
+				typedef int APITypeConstless;  ///< C type of the property that is passed across the raw API, without any const it
+				typedef int Type; ///< Type we actually hold and deal with the propery in everything by the raw API
+				typedef int ReturnType; ///< type to return from a function call
+				static const TypeEnum typeCode = eInt;
+				static int kEmpty;
+			};
+
+			/// type holder, for doubles, used to template up double properties
+			struct DoubleValue { 
+				typedef double APIType;
+				typedef double APITypeConstless;
+				typedef double Type;
+				typedef double ReturnType; ///< type to return from a function call
+				static const TypeEnum typeCode = eDouble;
+				static double kEmpty;
+			};
+
+			/// type holder, for pointers, used to template up pointer properties
+			struct PointerValue { 
+				typedef void *APIType;
+				typedef void *APITypeConstless;
+				typedef void *Type;
+				typedef void *ReturnType; ///< type to return from a function call
+				static const TypeEnum typeCode = ePointer;
+				static void *kEmpty;
+			};
+
+			/// type holder, for strings, used to template up string properties
+			struct StringValue { 
+				typedef const char *APIType;
+				typedef char *APITypeConstless;
+				typedef std::string Type;
+				typedef const std::string &ReturnType; ///< type to return from a function call
+				static const TypeEnum typeCode = eString;
+				static std::string kEmpty;
+			};
+
+			/// array representing the names of the various types, in order of TypeEnum
+			extern const char *gTypeNames[];
+
+			/// Sits on a property and can override the local property value when a value is being fetched
+			/// only one of these can be in any property (as the thing has only a single value).
+			class GetHook {
+			public :
+				/// dtor
+				virtual ~GetHook()
+				{
+				}
+
+				/// We specialise this to do some magic so that it calls get string/int/double/pointer appropriately
+				/// this is what is called by the propertytemplate code to fetch values out of a hook.
+				template<class T> typename T::ReturnType getProperty(const std::string &name, int index=0) const;
+
+				/// We specialise this to do some magic so that it calls get int/double/pointer appropriately
+				/// this is what is called by the propertytemplate code to fetch values out of a hook.
+				template<class T> void getPropertyN(const std::string &name, typename T::APIType *values, int count) const;
+
+				/// override this to fetch a single value at the given index.
+				virtual const std::string& getStringProperty(const std::string &name, int index = 0) const;
+					
+				/// override this to fetch a multiple values in a multi-dimension property
+				virtual void getStringPropertyN(const std::string &name, const char** values, int count) const;
+
+				/// override this to fetch a single value at the given index.
+				virtual int getIntProperty(const std::string &name, int index = 0) const;
+
+				/// override this to fetch a multiple values in a multi-dimension property
+				virtual void getIntPropertyN(const std::string &name, int *values, int count) const;
+
+				/// override this to fetch a single value at the given index.
+				virtual double getDoubleProperty(const std::string &name, int index = 0) const;
+
+				/// override this to fetch a multiple values in a multi-dimension property
+				virtual void getDoublePropertyN(const std::string &name, double *values, int count) const;
+
+				/// override this to fetch a single value at the given index.
+				virtual void *getPointerProperty(const std::string &name, int index = 0) const;
+				
+				/// override this to fetch a multiple values in a multi-dimension property
+				virtual void getPointerPropertyN(const std::string &name, void **values, int count) const;
+
+				/// override this to fetch the dimension size.
+				virtual int getDimension(const std::string &name) const;
+
+				/// override this to handle a reset(). 
+				virtual void reset(const std::string &name);
+			};
+
+			/// Sits on a property and is called when the local property is being set.
+			/// It notify or notifyN is called whenever the plugin sets a property
+			/// Many of these can sit on a property, as various objects will need to know when a property
+			/// has been changed. On notification you should fetch properties with a 'raw' call, rather
+			/// than the standard calls, as you may be fetching through a getHook and you won't see
+			/// the local value that has been shoved into the property.
+			class NotifyHook {
+			public :
+				/// dtor
+				virtual ~NotifyHook() {}
+
+				/// override this to be notified when a property changes
+				/// \arg name is the name of the property just set
+				/// \arg singleValue is whether setProperty on a single index was call, otherwise N properties were set
+				/// \arg indexOrN is the index if single value is true, or the count if singleValue is false
+				virtual void notify(const std::string &name, bool singleValue, int indexOrN) = 0;
+			};
+
+			/// base class for all properties
+			class Property {
+			protected :
+				std::string  _name;                     ///< name of this property
+				TypeEnum     _type;                     ///< type of this property
+				int          _dimension;                ///< the fixed dimension of this property 
+				bool         _pluginReadOnly;           ///< set is forbidden through suite: value may still change between get() calls
+				std::vector<NotifyHook *> _notifyHooks; ///< hooks to call whenever the property is set
+				GetHook                  *_getHook;     ///< if we are not storing props locally, they are stored via fetching from here
+
+				friend class Set;
+			public :
+				/// ctor
+				Property(const std::string &name,
+								 TypeEnum type,
+								 int dimension = 1,
+								 bool pluginReadOnly=false);
+						
+				/// copy ctor
+				Property(const Property &other);
+
+				/// dtor
+				virtual ~Property()
+				{
+				}
+				
+				/// is it read only?
+				bool getPluginReadOnly() const {return _pluginReadOnly; }
+
+				/// change the state of readonlyness
+				void setPluginReadOnly(bool v) {_pluginReadOnly = v;}
+
+				/// override this to return a clone of the property
+				virtual Property *deepCopy() = 0;
+				
+				/// get the name of this property
+				const std::string &getName()
+				{
+					return _name;
+				}
+				
+				/// get the type of this property
+				TypeEnum getType()
+				{
+					return _type;
+				}
+
+				/// add a notify hook
+				void addNotifyHook(NotifyHook *hook)
+				{
+					_notifyHooks.push_back(hook);
+				}
+				
+				/// set the get hook
+				void setGetHook(GetHook *hook)
+				{
+					_getHook = hook;
+				}
+				
+				/// call notify on the contained notify hooks
+				void notify(bool single, int indexOrN);
+
+				// get the current dimension of this property
+				virtual int getDimension() const = 0;
+
+				/// get the fixed dimension of this property
+				int getFixedDimension() const {
+					return _dimension;
+				}
+
+				/// are we a fixed dim property
+				bool isFixedSize() const 
+				{
+					return _dimension != 0;
+				}
+
+				/// reset this property to the default
+				virtual void reset() = 0;
+
+				// get a string representing the value of this property at element nth
+				virtual std::string getStringValue(int nth) = 0;
+			};
+			
+			/// this represents a generic property.
+			/// template parameter T is the type descriptor of the
+			/// type of property to model.  the class holds an internal _value vector which can be used
+			/// to store the values.  if set and get hooks are installed, these will be called instead
+			/// of using this variable.
+			/// Make sure that T::ReturnType is const if appropriate, as no extra qualifiers are applied here.
+			template<class T>
+			class PropertyTemplate : public Property
+			{
+			public :
+				typedef typename T::Type Type; 
+				typedef typename T::ReturnType ReturnType; 
+				typedef typename T::APIType APIType;
+				
+			protected :
+				/// this is the present value of the property
+				std::vector<Type> _value;
+
+				/// this is the default value of the property
+				std::vector<Type> _defaultValue;
+
+			public :
+				/// constructor
+				PropertyTemplate(const std::string &name,
+												 int dimension,
+												 bool pluginReadOnly,
+												 APIType defaultValue);
+
+				PropertyTemplate(const PropertyTemplate<T> &pt);
+
+				PropertyTemplate<T> *deepCopy() {
+					return new PropertyTemplate(*this);
+				}
+
+				virtual ~PropertyTemplate()
+				{
+				}
+
+				/// get the vector
+				const std::vector<Type> &getValues()
+				{
+					return _value;
+				}
+
+				// get multiple values
+				void getValueN(APIType *value, int count) const;
+
+#ifdef WINDOWS
+#pragma warning( disable : 4181 )	
+#endif		
+				/// get one value
+				const ReturnType getValue(int index=0) const;
+
+				/// get one value, without going through the getHook
+				const ReturnType getValueRaw(int index=0) const;
+
+#ifdef WINDOWS
+#pragma warning( default : 4181 )	
+#endif				
+				// get multiple values, without going through the getHook
+				void getValueNRaw(APIType *value, int count) const;
+
+				/// set one value
+				void setValue(const Type &value, int index=0);
+
+				/// set multiple values
+				void setValueN(const APIType *value, int count);
+
+				/// reset 
+				void reset();
+				
+				/// get the size of the vector
+				int getDimension() const;
+				
+				/// return the value as a string
+				inline std::string getStringValue(int idx) {
+					return castToString(_value[idx]);
+				}
+			};
+
+
+			typedef PropertyTemplate<IntValue>     Int;     /// Our int property
+			typedef PropertyTemplate<DoubleValue>  Double;  /// Our double property
+			typedef PropertyTemplate<StringValue>  String;  /// Our string property
+			typedef PropertyTemplate<PointerValue> Pointer; /// Our pointer property
+
+			/// A class that is used to initialise a property set. Feed in an array of these to
+			/// a property and it will construct a bunch of properties. Terminate such an array
+			/// with an empty (all zero) set.
+			struct PropSpec {
+				const char *name;          ///< name of the property 
+				TypeEnum type;             ///< type
+				int dimension;             ///< fixed dimension of the property, set to zero if variable dimension
+				bool readonly;             ///< is the property plug-in read only
+				const char *defaultValue;  ///< Default value as a string. Pointers are ignored and always null.
+			};
+			static const PropSpec propSpecEnd = {0, eNone, 0, false, 0};
+
+			/// A std::map of properties by name
+			typedef std::map<std::string, Property *> PropertyMap;
+
+
+			//................................................................................
+			/// Class that holds a set of properties and manipulates them
+			/// The 'fetch' methods return a property object.
+			/// The 'get' methods return a property value
+			class Set {
+			private :
+				static const int kMagic = 0x12082007; ///< magic number for property sets, and Connie's birthday :-)
+				const int   _magic; ///< to check for handles being nice
+
+			protected :
+				PropertyMap _props; ///< Our properties.
+
+				/// chained property set, which is read only
+				/// these are searched on a get if not found 
+				/// on a local search
+				Set *_chainedSet;
+
+				/// hide assignment
+				void operator=(const Set &);
+
+				/// set a particular property
+				template<class T> void setProperty(const std::string &property, int index, const typename T::Type &value);
+
+				/// set the first N of a particular property
+				template<class T> void setPropertyN(const std::string &property, int count, const typename T::APIType *value);
+
+				/// get a particular property
+				template<class T> typename T::ReturnType getProperty(const std::string &property, int index)  const;
+
+				/// get the first N of a particular property
+				template<class T> void getPropertyN(const std::string &property, int index, typename T::APIType *v)  const;
+
+				/// get a particular property without going through any getHook
+				template<class T> typename T::ReturnType getPropertyRaw(const std::string &property, int index)  const;
+
+				/// get a particular property without going through any getHook
+				template<class T> void getPropertyRawN(const std::string &property, int count, typename T::APIType *v)  const;
+
+			public :
+				/// take an array of of PropSpecs (which must be terminated with an entry in which
+				/// ->name is null), and turn these into a Set
+				explicit Set(const PropSpec *);
+
+				/// deep copies the property set
+				explicit Set(const Set &);
+
+				/// empty ctor
+				explicit Set();
+
+				/// destructor
+				virtual ~Set();
+
+				/// adds a bunch of properties from PropSpec
+				void addProperties(const PropSpec *);
+				
+				/// add one new property
+				void createProperty(const PropSpec &s);
+
+				/// add one new property
+				void addProperty(Property *prop);
+
+				/// set the chained property set
+				void setChainedSet(Set *s) {_chainedSet = s;}
+
+				/// grab the internal properties map
+				const PropertyMap &getProperties() const
+				{
+					return _props;
+				}
+
+				/// set the get hook for a particular property.  users may need to call particular
+				/// specialised versions of this.
+				void setGetHook(const std::string &s, GetHook *ghook) const;
+
+				/// add a set hook for a particular property.  users may need to call particular
+				/// specialised versions of this.
+				void addNotifyHook(const std::string &name, NotifyHook *hook) const;
+								
+				/// Fetchs a pointer to a property of the given name, following the property chain if the
+				/// 'followChain' arg is not false.
+				Property *fetchProperty(const std::string &name, bool followChain = false) const;
+
+				/// get property with the particular name and type.  if the property is 
+				/// missing or is of the wrong type, return an error status.  if this is a sloppy
+				/// property set and the property is missing, a new one will be created of the right
+				/// type
+				template<class T> bool fetchTypedProperty(const std::string &name, T *&prop, bool followChain = false) const;
+
+				/// retrieve the nameed string property
+				String *fetchStringProperty(const std::string &name,  bool followChain = false) const;
+
+				/// retrieve the named double property
+				Double *fetchDoubleProperty(const std::string &name,  bool followChain = false) const;
+
+				/// retrieve the named double property
+				Pointer *fetchPointerProperty(const std::string &name, bool followChain = false) const;
+
+				/// retrieve the named double property
+				Int *fetchIntProperty(const std::string &name, bool followChain = false) const;
+
+
+
+				/// get a particular int property without fetching via a get hook, useful for notifies
+				int getIntPropertyRaw(const std::string &property, int index = 0) const;
+				
+				/// get a particular double property without fetching via a get hook, useful for notifies
+				double getDoublePropertyRaw(const std::string &property, int index = 0) const;
+
+				/// get a particular pointer property without fetching via a get hook, useful for notifies
+				void *getPointerPropertyRaw(const std::string &property, int index = 0) const;
+
+				/// get a particular string property
+				const std::string &getStringPropertyRaw(const std::string &property, int index = 0) const;
+								
+				/// get the value of a particular string property
+				const std::string &getStringProperty(const std::string &property, int index = 0) const;
+				
+				/// get the value of a particular int property
+				int getIntProperty(const std::string &property, int index = 0) const;
+				
+				/// get the value of a particular double property
+				void getIntPropertyN(const std::string &property,  int *v, int N) const;
+
+				/// get the value of a particular double property
+				double getDoubleProperty(const std::string &property, int index = 0) const;
+
+				/// get the value of a particular double property
+				void getDoublePropertyN(const std::string &property,  double *v, int N) const;
+
+				/// get the value of a particular pointer property
+				void *getPointerProperty(const std::string &property, int index = 0) const;
+
+
+
+				/// set a particular string property without fetching via a get hook, useful for notifies
+				void setStringProperty(const std::string &property, const std::string &value, int index = 0);
+
+				/// get a particular int property
+				void setIntProperty(const std::string &property, int v, int index = 0);
+
+				/// get a particular double property
+				void setIntPropertyN(const std::string &property, const int *v, int N);
+				
+				/// get a particular double property
+				void setDoubleProperty(const std::string &property, double v, int index = 0);
+
+				/// get a particular double property
+				void setDoublePropertyN(const std::string &property, const double *v, int N);
+
+				/// get a particular double property
+				void setPointerProperty(const std::string &property,  void *v, int index = 0);
+				
+
+
+				/// get the dimension of a particular property
+				int getDimension(const std::string &property) const;
+
+				/// is the given string one of the values of a multi-dimensional string prop
+				/// this returns a non negative index if it is found, otherwise, -1
+				int findStringPropValueIndex(const std::string &propName,
+																		 const std::string &propValue) const;
+
+
+				/// get a handle on this object for passing to the C API
+				OfxPropertySetHandle getHandle() const
+				{
+					return (OfxPropertySetHandle)this;
+				}
+
+				/// is this a nice property set, or a dodgy pointer passed back to us
+				bool verifyMagic() { return _magic == kMagic; }
+			};
+
+			
+			/// return the OFX function suite that manages properties
+			const void *GetSuite(int version);
+		}
+	}
+}
+
+#endif

third_party/openfx/HostSupport/include/ofxhTimeLine.h

@@ -0,0 +1,34 @@
+
+
+
+#ifndef _ofxhTimeLine_h_
+#define _ofxhTimeLine_h_
+
+#include "ofxTimeLine.h"
+
+
+  
+    namespace OFX::Host::TimeLine {
+      
+      /// Things that implement timeline controls derive from this ABC and implement the following
+      /// functions.
+      class TimeLineI {
+      public :
+        virtual ~TimeLineI() = default;
+
+        /// get the current time on the timeline. This is not necessarily the same
+        /// time as being passed to an action (eg render)
+        virtual double timeLineGetTime() = 0;
+
+        /// set the timeline to a specific time
+        virtual void timeLineGotoTime(double t) = 0;
+
+        /// get the first and last times available on the effect's timeline
+        virtual void timeLineGetBounds(double &t1, double &t2) = 0;        
+      };
+
+    } // namespace progress
+  
+
+
+#endif

third_party/openfx/HostSupport/include/ofxhUtilities.h

@@ -0,0 +1,154 @@
+
+
+#ifndef _ofxhUtilities_h_
+#define _ofxhUtilities_h_
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include <string>
+#include <list>
+#include <vector>
+#include "ofxCore.h"
+
+// macro that intercepts any exception that passes through a plugin's entry point, and transforms it into a message on the host using Host::vmessage()
+#define CatchAllSetStatus(stat,host,plugin,msg)                         \
+  catch ( const std::bad_alloc& ba ) {                                  \
+    (stat) = kOfxStatErrMemory;                                         \
+    if (host) {                                                         \
+      try {                                                             \
+        (host)->message(kOfxMessageError, "",                           \
+                        "%s: Memory allocation error occured in plugin %s (%s)", \
+                        (msg), (plugin)->pluginIdentifier, ba.what());  \
+      } catch (...) {                                                   \
+      }                                                                 \
+    }                                                                   \
+  } catch ( const std::exception &e ) {                                 \
+    (stat) = kOfxStatFailed;                                            \
+    if (host) {                                                         \
+      try {                                                             \
+        (host)->message(kOfxMessageError, "",                           \
+                        "%s: Exception occured in plugin %s (%s)",      \
+                        (msg), (plugin)->pluginIdentifier, e.what());   \
+      } catch (...) {                                                   \
+      }                                                                 \
+    }                                                                   \
+  } catch ( ... ) {                                                     \
+    (stat) = kOfxStatFailed;                                            \
+    if (host) {                                                         \
+      try {                                                             \
+        (host)->message(kOfxMessageError, "",                           \
+                        "%s:Exception occured in plugin %s",            \
+                        (msg), (plugin)->pluginIdentifier);             \
+      } catch (...) {                                                   \
+      }                                                                 \
+    }                                                                   \
+  }
+
+namespace OFX {
+
+  /// class that is a std::vector of std::strings
+  typedef std::vector<std::string> StringVec;
+
+  /// class that is a std::vector of std::strings
+  inline void SetStringVecValue(StringVec &sv, const std::string &value, size_t index = 0) 
+  {
+    size_t size = sv.size();
+    if(size <= index) {
+      while(size < index) {
+        sv.push_back("");
+        ++size;
+      }
+      sv.push_back(value);
+    }
+    else 
+      sv[index] = value;
+  }
+
+  /// get me deepest bit depth 
+  std::string FindDeepestBitDepth(const std::string &s1, const std::string &s2);
+
+  /// get the min value
+  template<class T> inline T Minimum(const T &a, const T &b)
+  {
+    return a < b ? a : b;
+  }
+
+  /// get the min value
+  template<class T> inline T Maximum(const T &a, const T &b)
+  {
+    return a > b ? a : b;
+  }
+
+  /// clamp the value
+  template<class T> inline T Clamp(const T &v, const T &mn, const T &mx)
+  {
+    if(v < mn) return mn;
+    if(v > mx) return mx;
+    return v;
+  }
+
+  /// clamp the rect in v to the given bounds
+  inline OfxRectD Clamp(const OfxRectD &v,
+                        const OfxRectD &bounds)
+  {
+    OfxRectD r;
+    r.x1 = Clamp(v.x1, bounds.x1, bounds.x2);
+    r.x2 = Clamp(v.x2, bounds.x1, bounds.x2);
+    r.y1 = Clamp(v.y1, bounds.y1, bounds.y2);
+    r.y2 = Clamp(v.y2, bounds.y1, bounds.y2);
+    return r;
+  }
+
+  /// get the union of the two rects
+  inline OfxRectD Union(const OfxRectD &a,
+                        const OfxRectD &b)
+  {
+    OfxRectD r;
+    r.x1 = Minimum(a.x1, b.x1);
+    r.x2 = Maximum(a.x2, b.x2);
+    r.y1 = Minimum(a.y1, b.y1);
+    r.y2 = Maximum(a.y2, b.y2);
+    return r;
+  }
+
+    inline const char* StatStr(OfxStatus stat) {
+        switch(stat) {
+            case kOfxStatOK:
+                return "kOfxStatOK";
+            case kOfxStatFailed:
+                return "kOfxStatFailed";
+            case kOfxStatErrFatal:
+                return "kOfxStatErrFatal";
+            case kOfxStatErrUnknown:
+                return "kOfxStatErrUnknown";
+            case kOfxStatErrMissingHostFeature:
+                return "kOfxStatErrMissingHostFeature";
+            case kOfxStatErrUnsupported:
+                return "kOfxStatErrUnsupported";
+            case kOfxStatErrExists:
+                return "kOfxStatErrExists";
+            case kOfxStatErrFormat:
+                return "kOfxStatErrFormat";
+            case kOfxStatErrMemory:
+                return "kOfxStatErrMemory";
+            case kOfxStatErrBadHandle:
+                return "kOfxStatErrBadHandle";
+            case kOfxStatErrBadIndex:
+                return "kOfxStatErrBadIndex";
+            case kOfxStatErrValue:
+                return "kOfxStatErrValue";
+            case kOfxStatReplyYes:
+                return "kOfxStatReplyYes";
+            case kOfxStatReplyNo:
+                return "kOfxStatReplyNo";
+            case kOfxStatReplyDefault:
+                return "kOfxStatReplyDefault";
+            default:
+                return "(unknown error code)";
+        }
+    }
+}
+#endif
+
+

third_party/openfx/HostSupport/include/ofxhXml.h

@@ -0,0 +1,74 @@
+
+
+#ifndef OFX_XML_H
+#define OFX_XML_H
+
+// Copyright OpenFX and contributors to the OpenFX project.
+// SPDX-License-Identifier: BSD-3-Clause
+
+namespace OFX {
+
+  namespace XML {
+
+    inline std::string escape(const std::string &s) {
+      std::string ns;
+      for (size_t i=0;i<s.size();i++) {
+        // The are exactly five characters which must be escaped
+        // http://www.w3.org/TR/xml/#syntax
+        switch (s[i]) {
+          case '<':
+            ns += "&lt;";
+            break;
+          case '>':
+            ns += "&gt;";
+            break;
+          case '&':
+            ns += "&amp;";
+            break;
+          case '"':
+            ns += "&quot;";
+            break;
+          case '\'':
+            ns += "&apos;";
+            break;
+          default: {
+            unsigned char c = (unsigned char)(s[i]);
+            // Escape even the whitespace characters '\n' '\r' '\t', although they are valid
+            // XML, because they would be converted to space when re-read.
+            // See http://www.w3.org/TR/xml/#AVNormalize
+            if ((0x01 <= c && c <= 0x1f) || (0x7F <= c && c <= 0x9F)) {
+              // these characters must be escaped in XML 1.1
+              // http://www.w3.org/TR/xml/#sec-references
+              ns += "&#x";
+              if (c > 0xf) {
+                int d = c / 0x10;
+                ns += d < 10 ? ('0' + d) : ('A' + d - 10);
+              }
+              int d = c & 0xf;
+              ns += d < 10 ? ('0' + d) : ('A' + d - 10);
+              ns += ';';
+            } else {
+              ns += s[i];
+            }
+          } break;
+        }
+      }
+      return ns;
+    }
+
+    inline std::string attribute(const std::string &at, const std::string &val)
+    {
+      return at + "=" + "\"" + escape(val) + "\" ";
+    }
+
+    inline std::string attribute(const std::string &st, int val)
+    {
+      std::ostringstream o;
+      o << val;
+      return attribute(st, o.str());
+    }
+
+  }
+}
+
+#endif

third_party/openfx/HostSupport/src/ofxhBinary.cpp

@@ -0,0 +1,104 @@
+
+
+#include "ofxhBinary.h"
+
+using namespace OFX;
+
+Binary::Binary(const std::string &binaryPath): _binaryPath(binaryPath), _invalid(false), _dlHandle(0), _users(0)
+{
+  struct stat sb;
+  if (stat(binaryPath.c_str(), &sb) != 0) {
+    _invalid = true;
+    _time = 0;
+    _size = 0;
+  } 
+  else {
+    _time = sb.st_mtime;
+    _size = sb.st_size;
+  }
+}
+
+
+// actually open the binary.
+void Binary::load() 
+{
+  if(_invalid)
+    return;
+
+#if defined (UNIX)
+  _dlHandle = dlopen(_binaryPath.c_str(), RTLD_LAZY|RTLD_LOCAL);
+#else
+  _dlHandle = LoadLibrary(_binaryPath.c_str());
+#endif
+  if (_dlHandle == 0) {
+#if defined (UNIX)
+    std::cerr << "couldn't open library " << _binaryPath << " because " << dlerror() << std::endl;
+#else
+    LPVOID lpMsgBuf = NULL;
+    DWORD err = GetLastError();
+
+    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+      FORMAT_MESSAGE_FROM_SYSTEM |
+      FORMAT_MESSAGE_IGNORE_INSERTS,
+      NULL,
+      err,
+      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+      (LPTSTR) &lpMsgBuf,
+      0, NULL);
+
+    std::cerr << "couldn't open library " << _binaryPath << " because " << (char*)lpMsgBuf << " was returned" << std::endl;
+    if (lpMsgBuf != NULL) {
+      LocalFree(lpMsgBuf);
+    }
+#endif
+    _invalid = true;
+  }
+}
+
+/// close the binary
+void Binary::unload() {
+  if (_dlHandle != 0) {
+#if defined (UNIX)
+    dlclose(_dlHandle);
+#elif defined (WINDOWS)
+    FreeLibrary(_dlHandle);
+#endif
+    _dlHandle = 0;
+  }
+}
+
+/// look up a symbol in the binary file and return it as a pointer.
+/// returns null pointer if not found, or if the library is not loaded.
+void *Binary::findSymbol(const std::string &symbol) {
+  if (_dlHandle != 0) {
+#if defined(UNIX)
+    return dlsym(_dlHandle, symbol.c_str());
+#elif defined (WINDOWS)
+    return (void*)GetProcAddress(_dlHandle, symbol.c_str());
+#endif
+  } else {
+    return 0;
+  }
+}
+
+
+void Binary::ref()
+{
+  if (_users == 0) {
+    load();
+  }
+  _users++;
+}
+
+void Binary::unref()
+{
+  _users--;
+  if (_users == 0) {
+    unload();
+  }
+  if (_users < 0) {
+    _users = 0;
+  }
+}
+
+

third_party/openfx/HostSupport/src/ofxhClip.cpp

@@ -0,0 +1,654 @@
+
+
+#include <assert.h>
+
+// ofx
+#include "ofxCore.h"
+
+// ofx host
+#include "ofxhBinary.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhClip.h"
+#include "ofxhImageEffect.h"
+#ifdef OFX_SUPPORTS_OPENGLRENDER
+#include "ofxGPURender.h"
+#endif
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace ImageEffect {
+
+      /// properties common to the desciptor and instance
+      /// the desc and set them, the instance cannot
+      static const Property::PropSpec clipDescriptorStuffs[] = {
+        { kOfxPropType, Property::eString, 1, true, kOfxTypeClip },
+        { kOfxPropName, Property::eString, 1, true, "SET ME ON CONSTRUCTION" },
+        { kOfxPropLabel, Property::eString, 1, false, "" } ,
+        { kOfxPropShortLabel, Property::eString, 1, false, "" },
+        { kOfxPropLongLabel, Property::eString, 1, false, "" },        
+        { kOfxImageEffectPropSupportedComponents, Property::eString, 0, false, "" },
+        { kOfxImageEffectPropTemporalClipAccess,   Property::eInt, 1, false, "0" },
+        { kOfxImageClipPropOptional, Property::eInt, 1, false, "0" },
+        { kOfxImageClipPropIsMask,   Property::eInt, 1, false, "0" },
+        { kOfxImageClipPropFieldExtraction, Property::eString, 1, false, kOfxImageFieldDoubled },
+        { kOfxImageEffectPropSupportsTiles,   Property::eInt, 1, false, "1" },
+        Property::propSpecEnd,
+      };
+      
+      ////////////////////////////////////////////////////////////////////////////////
+      // props to clips descriptors and instances
+
+      // base ctor, for a descriptor
+      ClipBase::ClipBase()
+        : _properties(clipDescriptorStuffs) 
+      {
+      }
+
+      /// props to clips and 
+      ClipBase::ClipBase(const ClipBase &v)
+        : _properties(v._properties) 
+      {
+        /// we are an instance, we need to reset the props to read only
+        const Property::PropertyMap &map = _properties.getProperties();
+        Property::PropertyMap::const_iterator i;
+        for(i = map.begin(); i != map.end(); ++i) {
+          (*i).second->setPluginReadOnly(false);
+        } 
+      }
+
+      /// name of the clip
+      const std::string &ClipBase::getShortLabel() const
+      {
+        const std::string &s = _properties.getStringProperty(kOfxPropShortLabel);
+        if(s == "") {
+          return getLabel();
+        }
+        return s;
+      }
+      
+      /// name of the clip
+      const std::string &ClipBase::getLabel() const
+      {
+        const std::string &s = _properties.getStringProperty(kOfxPropLabel);
+        if(s == "") {
+          return getName();
+        }
+        return s;
+      }
+      
+      /// name of the clip
+      const std::string &ClipBase::getLongLabel() const
+      {
+        const std::string &s = _properties.getStringProperty(kOfxPropLongLabel);
+        if(s == "") {
+          return getLabel();
+        }
+        return s;
+      }
+      
+      /// return a std::vector of supported comp
+      const std::vector<std::string> &ClipBase::getSupportedComponents() const
+      {
+        Property::String *p =  _properties.fetchStringProperty(kOfxImageEffectPropSupportedComponents);
+        assert(p != NULL);
+        return p->getValues();
+      }
+      
+      /// is the given component supported
+      bool ClipBase::isSupportedComponent(const std::string &comp) const
+      {
+        return _properties.findStringPropValueIndex(kOfxImageEffectPropSupportedComponents, comp) != -1;
+      }
+      
+      /// does the clip do random temporal access
+      bool ClipBase::temporalAccess() const
+      {
+        return _properties.getIntProperty(kOfxImageEffectPropTemporalClipAccess) != 0;
+      }
+      
+      /// is the clip optional
+      bool ClipBase::isOptional() const
+      {
+        return _properties.getIntProperty(kOfxImageClipPropOptional) != 0;
+      }
+      
+      /// is the clip a nominal 'mask' clip
+      bool ClipBase::isMask() const
+      {
+        return _properties.getIntProperty(kOfxImageClipPropIsMask) != 0;
+      }
+      
+      /// how does this clip like fielded images to be presented to it
+      const std::string &ClipBase::getFieldExtraction() const
+      {
+        return _properties.getStringProperty(kOfxImageClipPropFieldExtraction);
+      }
+      
+      /// is the clip a nominal 'mask' clip
+      bool ClipBase::supportsTiles() const
+      {
+        return _properties.getIntProperty(kOfxImageEffectPropSupportsTiles) != 0;
+      }
+
+      const Property::Set& ClipBase::getProps() const
+      {
+        return _properties;
+      }
+
+      Property::Set& ClipBase::getProps() 
+      {
+        return _properties;
+      }
+
+      /// get a handle on the properties of the clip descriptor for the C api
+      OfxPropertySetHandle ClipBase::getPropHandle() const
+      {
+        return _properties.getHandle();
+      }
+
+      /// get a handle on the clip descriptor for the C api
+      OfxImageClipHandle ClipBase::getHandle() const
+      {
+        return (OfxImageClipHandle)this;
+      }
+
+      ////////////////////////////////////////////////////////////////////////////////
+      /// descriptor
+      ClipDescriptor::ClipDescriptor(const std::string &name)
+        : ClipBase()
+      {
+        _properties.setStringProperty(kOfxPropName,name);
+      }
+      
+      /// extra properties for the instance, these are fetched from the host
+      /// via a get hook and some virtuals
+      static const Property::PropSpec clipInstanceStuffs[] = {
+        { kOfxImageEffectPropPixelDepth, Property::eString, 1, true, kOfxBitDepthNone },
+        { kOfxImageEffectPropComponents, Property::eString, 1, true, kOfxImageComponentNone },
+        { kOfxImageClipPropUnmappedPixelDepth, Property::eString, 1, true, kOfxBitDepthNone },
+        { kOfxImageClipPropUnmappedComponents, Property::eString, 1, true, kOfxImageComponentNone },
+        { kOfxImageEffectPropPreMultiplication, Property::eString, 1, true, kOfxImageOpaque },
+        { kOfxImagePropPixelAspectRatio, Property::eDouble, 1, true, "1.0" },
+        { kOfxImageEffectPropFrameRate, Property::eDouble, 1, true, "25.0" },
+        { kOfxImageEffectPropFrameRange, Property::eDouble, 2, true, "0" },
+        { kOfxImageClipPropFieldOrder, Property::eString, 1, true, kOfxImageFieldNone },
+        { kOfxImageClipPropConnected, Property::eInt, 1, true, "0" },
+        { kOfxImageEffectPropUnmappedFrameRange, Property::eDouble, 2, true, "0" },
+        { kOfxImageEffectPropUnmappedFrameRate, Property::eDouble, 1, true, "25.0" },
+        { kOfxImageClipPropContinuousSamples, Property::eInt, 1, true, "0" },
+        Property::propSpecEnd,
+      };
+
+
+      ////////////////////////////////////////////////////////////////////////////////
+      // instance
+      ClipInstance::ClipInstance(ImageEffect::Instance* effectInstance, ClipDescriptor& desc) 
+        : ClipBase(desc)
+        , _effectInstance(effectInstance)
+        , _isOutput(desc.isOutput())
+        , _pixelDepth(kOfxBitDepthNone) 
+        , _components(kOfxImageComponentNone)
+      {
+        // this will a parameters that are needed in an instance but not a 
+        // Descriptor
+        _properties.addProperties(clipInstanceStuffs);
+        int i = 0;
+        while(clipInstanceStuffs[i].name) {
+          const Property::PropSpec& spec = clipInstanceStuffs[i];
+
+          switch (spec.type) {
+          case Property::eDouble:
+          case Property::eString:
+          case Property::eInt:
+            _properties.setGetHook(spec.name, this);
+            break;
+          default:
+            break;
+          }
+
+          i++;
+        }
+      }
+
+      // do nothing
+      int ClipInstance::getDimension(const std::string &name) const 
+      {
+        if(name == kOfxImageEffectPropUnmappedFrameRange || name == kOfxImageEffectPropFrameRange)
+          return 2;
+        return 1;
+      }
+
+      // don't know what to do
+      void ClipInstance::reset(const std::string &/*name*/) {
+        //printf("failing in %s\n", __PRETTY_FUNCTION__);
+        throw Property::Exception(kOfxStatErrMissingHostFeature);
+      }
+
+      const std::string &ClipInstance::getComponents() const
+      {
+        return _components;
+      }
+      
+      /// set the current set of components
+      /// called by clip preferences action 
+      void ClipInstance::setComponents(const std::string &s)
+      {
+        _components = s;
+      }
+       
+      // get the virutals for viewport size, pixel scale, background colour
+      void ClipInstance::getDoublePropertyN(const std::string &name, double *values, int n) const
+      {
+        if(name==kOfxImagePropPixelAspectRatio){
+          if(n>1) throw Property::Exception(kOfxStatErrValue);
+          *values = getAspectRatio();
+        }
+        else if(name==kOfxImageEffectPropFrameRate){
+          if(n>1) throw Property::Exception(kOfxStatErrValue);
+          *values = getFrameRate();
+        }
+        else if(name==kOfxImageEffectPropFrameRange){
+          if(n>2) throw Property::Exception(kOfxStatErrValue);
+          getFrameRange(values[0], values[1]);
+        }
+        else if(name==kOfxImageEffectPropUnmappedFrameRate){
+          if(n>1) throw Property::Exception(kOfxStatErrValue);
+          *values =  getUnmappedFrameRate();
+        }
+        else if(name==kOfxImageEffectPropUnmappedFrameRange){
+          if(n>2) throw Property::Exception(kOfxStatErrValue);
+          getUnmappedFrameRange(values[0], values[1]);
+        }
+        else
+          throw Property::Exception(kOfxStatErrValue);
+      }
+
+      // get the virutals for viewport size, pixel scale, background colour
+      double ClipInstance::getDoubleProperty(const std::string &name, int n) const
+      {
+        if(name==kOfxImagePropPixelAspectRatio){
+          if(n!=0) throw Property::Exception(kOfxStatErrValue);
+          return getAspectRatio();
+        }
+        else if(name==kOfxImageEffectPropFrameRate){
+          if(n!=0) throw Property::Exception(kOfxStatErrValue);
+          return getFrameRate();
+        }
+        else if(name==kOfxImageEffectPropFrameRange){
+          if(n>1) throw Property::Exception(kOfxStatErrValue);
+          double range[2];
+          getFrameRange(range[0], range[1]);
+          return range[n];
+        }
+        else if(name==kOfxImageEffectPropUnmappedFrameRate){
+          if(n>0) throw Property::Exception(kOfxStatErrValue);
+          return getUnmappedFrameRate();
+        }
+        else if(name==kOfxImageEffectPropUnmappedFrameRange){
+          if(n>1) throw Property::Exception(kOfxStatErrValue);
+          double range[2];
+          getUnmappedFrameRange(range[0], range[1]);
+          return range[n];
+        }
+        else
+          throw Property::Exception(kOfxStatErrValue);
+      }
+
+      // get the virutals for viewport size, pixel scale, background colour
+      int ClipInstance::getIntProperty(const std::string &name, int n) const
+      {
+        if(n!=0) throw Property::Exception(kOfxStatErrValue);
+        if(name==kOfxImageClipPropConnected){
+          return getConnected();
+        }
+        else if(name==kOfxImageClipPropContinuousSamples){
+          return getContinuousSamples();
+        }
+        else
+          throw Property::Exception(kOfxStatErrValue);
+      }
+
+      // get the virutals for viewport size, pixel scale, background colour
+      void ClipInstance::getIntPropertyN(const std::string &name, int *values, int n) const
+      {
+        if(n!=0) throw Property::Exception(kOfxStatErrValue);
+        *values = getIntProperty(name, 0);
+      }
+
+      // get the virutals for viewport size, pixel scale, background colour
+      const std::string &ClipInstance::getStringProperty(const std::string &name, int n) const
+      {
+        if(n!=0) throw Property::Exception(kOfxStatErrValue);
+        if(name==kOfxImageEffectPropPixelDepth){
+          return getPixelDepth();
+        }
+        else if(name==kOfxImageEffectPropComponents){
+          return getComponents();
+        }
+        else if(name==kOfxImageClipPropUnmappedComponents){
+          return getUnmappedComponents();
+        }
+        else if(name==kOfxImageClipPropUnmappedPixelDepth){
+          return getUnmappedBitDepth();
+        }
+        else if(name==kOfxImageEffectPropPreMultiplication){
+          return getPremult();
+        }
+        else if(name==kOfxImageClipPropFieldOrder){
+          return getFieldOrder();
+        }
+        else
+          throw Property::Exception(kOfxStatErrValue);
+      }
+       
+      // fetch  multiple values in a multi-dimension property
+      void ClipInstance::getStringPropertyN(const std::string &name, const char** values, int count) const
+      {
+          if (count == 0) {
+              return;
+          }
+          if(count!=1) throw Property::Exception(kOfxStatErrValue);
+          if(name==kOfxImageEffectPropPixelDepth){
+              values[0] = getPixelDepth().c_str();
+          }
+          else if(name==kOfxImageEffectPropComponents){
+              values[0] = getComponents().c_str();
+          }
+          else if(name==kOfxImageClipPropUnmappedComponents){
+              values[0] = getUnmappedComponents().c_str();
+          }
+          else if(name==kOfxImageClipPropUnmappedPixelDepth){
+              values[0] = getUnmappedBitDepth().c_str();
+          }
+          else if(name==kOfxImageEffectPropPreMultiplication){
+              values[0] = getPremult().c_str();
+          }
+          else if(name==kOfxImageClipPropFieldOrder){
+              values[0] = getFieldOrder().c_str();
+          }
+          else
+              throw Property::Exception(kOfxStatErrValue);
+      }
+
+      // notify override properties
+      void ClipInstance::notify(const std::string &/*name*/, bool /*isSingle*/, int /*indexOrN*/) 
+      {
+      }
+
+      OfxStatus ClipInstance::instanceChangedAction(const std::string &why,
+                                                OfxTime     time,
+                                                OfxPointD   renderScale)
+      {
+        Property::PropSpec stuff[] = {
+          { kOfxPropType, Property::eString, 1, true, kOfxTypeClip },
+          { kOfxPropName, Property::eString, 1, true, getName().c_str() },
+          { kOfxPropChangeReason, Property::eString, 1, true, why.c_str() },
+          { kOfxPropTime, Property::eDouble, 1, true, "0" },
+          { kOfxImageEffectPropRenderScale, Property::eDouble, 2, true, "0" },
+          Property::propSpecEnd
+        };
+
+        Property::Set inArgs(stuff);
+
+        // add the second dimension of the render scale
+        inArgs.setDoubleProperty(kOfxPropTime,time);
+        inArgs.setDoublePropertyN(kOfxImageEffectPropRenderScale, &renderScale.x, 2);
+#       ifdef OFX_DEBUG_ACTIONS
+          std::cout << "OFX: "<<(void*)_effectInstance<<"->"<<kOfxActionInstanceChanged<<"("<<kOfxTypeClip<<","<<getName()<<","<<why<<","<<time<<",("<<renderScale.x<<","<<renderScale.y<<"))"<<std::endl;
+#       endif
+
+        OfxStatus st;
+        if(_effectInstance){
+          st = _effectInstance->mainEntry(kOfxActionInstanceChanged, _effectInstance->getHandle(), &inArgs, 0);
+        } else {
+          st = kOfxStatFailed;
+        }
+#       ifdef OFX_DEBUG_ACTIONS
+          std::cout << "OFX: "<<(void*)_effectInstance<<"->"<<kOfxActionInstanceChanged<<"("<<kOfxTypeClip<<","<<getName()<<","<<why<<","<<time<<",("<<renderScale.x<<","<<renderScale.y<<"))->"<<StatStr(st)<<std::endl;
+#       endif
+        return st;
+      }
+
+      /// given the colour component, find the nearest set of supported colour components
+      const std::string &ClipInstance::findSupportedComp(const std::string &s) const
+      { 
+        static const std::string none(kOfxImageComponentNone);
+        static const std::string rgba(kOfxImageComponentRGBA);
+        static const std::string rgb(kOfxImageComponentRGB);
+        static const std::string alpha(kOfxImageComponentAlpha);
+        /// is it there
+        if(isSupportedComponent(s))
+          return s;
+          
+        /// were we fed some custom non chromatic component by getUnmappedComponents? Return it.
+        /// we should never be here mind, so a bit weird
+        if(!_effectInstance->isChromaticComponent(s))
+          return s;
+
+        /// Means we have RGBA or Alpha being passed in and the clip
+        /// only supports the other one, so return that
+        if(s == rgba) {
+          if(isSupportedComponent(rgb))
+            return rgb;
+          if(isSupportedComponent(alpha))
+            return alpha;
+        } else if(s == alpha) {
+          if(isSupportedComponent(rgba))
+            return rgba;
+          if(isSupportedComponent(rgb))
+            return rgb;
+        }
+
+        /// wierd, must be some custom bit , if only one, choose that, otherwise no idea
+        /// how to map, you need to derive to do so.
+        const std::vector<std::string> &supportedComps = getSupportedComponents();
+        if(supportedComps.size() == 1)
+          return supportedComps[0];
+
+        return none;
+      }
+      
+      
+      ////////////////////////////////////////////////////////////////////////////////
+      // Image
+      //
+
+      static const Property::PropSpec imageBaseStuffs[] = {
+        { kOfxPropType, Property::eString, 1, false, kOfxTypeImage },
+        { kOfxImageEffectPropPixelDepth, Property::eString, 1, true, kOfxBitDepthNone  },
+        { kOfxImageEffectPropComponents, Property::eString, 1, true, kOfxImageComponentNone },
+        { kOfxImageEffectPropPreMultiplication, Property::eString, 1, true, kOfxImageOpaque  },
+        { kOfxImageEffectPropRenderScale, Property::eDouble, 2, true, "1.0" },
+        { kOfxImagePropPixelAspectRatio, Property::eDouble, 1, true, "1.0"  },
+        { kOfxImagePropBounds, Property::eInt, 4, true, "0" },
+        { kOfxImagePropRegionOfDefinition, Property::eInt, 4, true, "0", },
+        { kOfxImagePropRowBytes, Property::eInt, 1, true, "0", },
+        { kOfxImagePropField, Property::eString, 1, true, "", },
+        { kOfxImagePropUniqueIdentifier, Property::eString, 1, true, "" },
+        Property::propSpecEnd
+      };
+
+      ImageBase::ImageBase()
+        : Property::Set(imageBaseStuffs)
+        , _referenceCount(1)
+      {
+      }
+
+      /// called during ctor to get bits from the clip props into ours
+      void ImageBase::getClipBits(ClipInstance& instance)
+      {
+        Property::Set& clipProperties = instance.getProps();
+        
+        // get and set the clip instance pixel depth
+        const std::string &depth = clipProperties.getStringProperty(kOfxImageEffectPropPixelDepth);
+        setStringProperty(kOfxImageEffectPropPixelDepth, depth); 
+        
+        // get and set the clip instance components
+        const std::string &comps = clipProperties.getStringProperty(kOfxImageEffectPropComponents);
+        setStringProperty(kOfxImageEffectPropComponents, comps);
+        
+        // get and set the clip instance premultiplication
+        setStringProperty(kOfxImageEffectPropPreMultiplication, clipProperties.getStringProperty(kOfxImageEffectPropPreMultiplication));
+
+        // get and set the clip instance pixel aspect ratio
+        setDoubleProperty(kOfxImagePropPixelAspectRatio, clipProperties.getDoubleProperty(kOfxImagePropPixelAspectRatio));
+      }
+
+      /// make an image from a clip instance
+      ImageBase::ImageBase(ClipInstance& instance)
+        : Property::Set(imageBaseStuffs)
+        , _referenceCount(1)
+      {
+        getClipBits(instance);
+      }      
+
+      // construction based on clip instance
+      ImageBase::ImageBase(ClipInstance& instance,
+                   double renderScaleX, 
+                   double renderScaleY,
+                   const OfxRectI &bounds,
+                   const OfxRectI &rod,
+                   int rowBytes,
+                   std::string field,
+                   std::string uniqueIdentifier) 
+        : Property::Set(imageBaseStuffs)
+        , _referenceCount(1)
+      {
+        getClipBits(instance);
+
+        // set other data
+        setDoubleProperty(kOfxImageEffectPropRenderScale,renderScaleX, 0);    
+        setDoubleProperty(kOfxImageEffectPropRenderScale,renderScaleY, 1);        
+        setIntProperty(kOfxImagePropBounds,bounds.x1, 0);
+        setIntProperty(kOfxImagePropBounds,bounds.y1, 1);
+        setIntProperty(kOfxImagePropBounds,bounds.x2, 2);
+        setIntProperty(kOfxImagePropBounds,bounds.y2, 3);
+        setIntProperty(kOfxImagePropRegionOfDefinition,rod.x1, 0);
+        setIntProperty(kOfxImagePropRegionOfDefinition,rod.y1, 1);
+        setIntProperty(kOfxImagePropRegionOfDefinition,rod.x2, 2);
+        setIntProperty(kOfxImagePropRegionOfDefinition,rod.y2, 3);        
+        setIntProperty(kOfxImagePropRowBytes,rowBytes);
+        
+        setStringProperty(kOfxImagePropField,field);
+        setStringProperty(kOfxImageClipPropFieldOrder,field);
+        setStringProperty(kOfxImagePropUniqueIdentifier,uniqueIdentifier);
+      }
+
+      OfxRectI ImageBase::getBounds() const
+      {
+        OfxRectI bounds = {0, 0, 0, 0};
+        getIntPropertyN(kOfxImagePropBounds, &bounds.x1, 4);
+        return bounds;
+      }
+
+      OfxRectI ImageBase::getROD() const
+      {
+        OfxRectI rod = {0, 0, 0, 0};
+        getIntPropertyN(kOfxImagePropRegionOfDefinition, &rod.x1, 4);
+        return rod;
+      }
+
+      ImageBase::~ImageBase() {
+        //assert(_referenceCount <= 0);
+      }
+
+      // release the reference 
+      void ImageBase::releaseReference()
+      {
+        _referenceCount -= 1;
+        if(_referenceCount <= 0)
+          delete this;
+      }
+
+
+      static const Property::PropSpec imageStuffs[] = {
+        { kOfxImagePropData, Property::ePointer, 1, true, NULL },
+        Property::propSpecEnd
+      };
+
+      Image::Image()
+        : ImageBase()
+      {
+        addProperties(imageStuffs);
+      }
+
+      /// make an image from a clip instance
+      Image::Image(ClipInstance& instance)
+        : ImageBase(instance)
+      {
+        addProperties(imageStuffs);
+      }
+
+      // construction based on clip instance
+      Image::Image(ClipInstance& instance,
+                   double renderScaleX, 
+                   double renderScaleY,
+                   void* data,
+                   const OfxRectI &bounds,
+                   const OfxRectI &rod,
+                   int rowBytes,
+                   std::string field,
+                   std::string uniqueIdentifier) 
+        : ImageBase(instance, renderScaleX, renderScaleY, bounds, rod, rowBytes, field, uniqueIdentifier)
+      {
+        addProperties(imageStuffs);
+
+        // set other data
+        setPointerProperty(kOfxImagePropData,data);
+      }
+
+      Image::~Image() {
+        //assert(_referenceCount <= 0);
+      }
+#   ifdef OFX_SUPPORTS_OPENGLRENDER
+      static const Property::PropSpec textureStuffs[] = {
+        { kOfxImageEffectPropOpenGLTextureIndex, Property::eInt, 1, true, "-1" },
+        { kOfxImageEffectPropOpenGLTextureTarget, Property::eInt, 1, true, "-1" },
+        Property::propSpecEnd
+      };
+
+      Texture::Texture()
+        : ImageBase()
+      {
+        addProperties(textureStuffs);
+      }
+
+      /// make an image from a clip instance
+      Texture::Texture(ClipInstance& instance)
+        : ImageBase(instance)
+      {
+        addProperties(textureStuffs);
+      }
+
+      // construction based on clip instance
+      Texture::Texture(ClipInstance& instance,
+                   double renderScaleX, 
+                   double renderScaleY,
+                   int index,
+                   int target,
+                   const OfxRectI &bounds,
+                   const OfxRectI &rod,
+                   int rowBytes,
+                   std::string field,
+                   std::string uniqueIdentifier) 
+        : ImageBase(instance, renderScaleX, renderScaleY, bounds, rod, rowBytes, field, uniqueIdentifier)
+      {
+        addProperties(textureStuffs);
+
+        // set other data
+        setIntProperty(kOfxImageEffectPropOpenGLTextureIndex, index);
+        setIntProperty(kOfxImageEffectPropOpenGLTextureTarget, target);
+      }
+
+
+      Texture::~Texture() {
+        //assert(_referenceCount <= 0);
+      }
+#   endif
+    } // Clip
+
+  } // Host
+
+} // OFX

third_party/openfx/HostSupport/src/ofxhHost.cpp

@@ -0,0 +1,124 @@
+
+
+#include <limits.h>
+#include <math.h>
+#include <float.h>
+#include <string.h>
+
+// ofx
+#include "ofxCore.h"
+#include "ofxProperty.h"
+#include "ofxMultiThread.h"
+#include "ofxMemory.h"
+
+#include "ofxhHost.h"
+
+typedef OfxPlugin* (*OfxGetPluginType)(int);
+
+namespace OFX {
+  
+  namespace Host {
+
+    ////////////////////////////////////////////////////////////////////////////////
+    /// simple memory suite 
+    namespace Memory {
+      static OfxStatus memoryAlloc(void */*handle*/, size_t bytes, void **data)
+      {
+        *data = malloc(bytes);
+        if (*data) {
+          return kOfxStatOK;
+        } else {
+          return kOfxStatErrMemory;
+        }
+      }
+      
+      static OfxStatus memoryFree(void *data)
+      {
+        free(data);
+        return kOfxStatOK;
+      }
+      
+      static const struct OfxMemorySuiteV1 gMallocSuite = {
+        memoryAlloc,
+        memoryFree
+      };
+    }
+
+  }
+
+}
+
+namespace OFX {
+  namespace Host {
+    /// our own internal property for storing away our private pointer to our host descriptor
+#define kOfxHostSupportHostPointer "sf.openfx.net.OfxHostSupportHostPointer"
+
+    static const Property::PropSpec hostStuffs[] = {
+      { kOfxPropAPIVersion, Property::eInt, 0, false, "" },
+      { kOfxPropType, Property::eString, 1, false, "Host" },
+      { kOfxPropName, Property::eString, 1, false, "UNKNOWN" },
+      { kOfxPropLabel, Property::eString, 1, false, "UNKNOWN" },
+      { kOfxPropVersion, Property::eInt, 0, false, "0" },
+      { kOfxPropVersionLabel, Property::eString, 1, false, "" },
+      { kOfxHostSupportHostPointer,    Property::ePointer,    0,    false,    NULL },
+      Property::propSpecEnd
+    };    
+
+    static const void *fetchSuite(OfxPropertySetHandle hostProps, const char *suiteName, int suiteVersion)
+    {      
+      Property::Set* properties = reinterpret_cast<Property::Set*>(hostProps);
+      
+      Host* host = (Host*)properties->getPointerProperty(kOfxHostSupportHostPointer);
+      
+      if(host)
+        return host->fetchSuite(suiteName,suiteVersion);
+      else
+        return 0;
+    }
+
+    // Base Host
+    Host::Host() : _properties(hostStuffs) 
+    {
+      _host.host = _properties.getHandle();
+      _host.fetchSuite = OFX::Host::fetchSuite;
+
+      // record the host descriptor in the propert set
+      _properties.setPointerProperty(kOfxHostSupportHostPointer,this);
+    }
+
+    OfxHost *Host::getHandle() {
+      return &_host;
+    }
+
+    OfxStatus Host::message(const char* type,
+                            const char* id,
+                            const char* format,
+                            ...) {
+      try {
+        OfxStatus stat;
+        va_list args;
+        va_start(args,format);
+        stat = vmessage(type,id,format,args);
+        va_end(args);
+        return stat;
+      } catch (...) {
+        return kOfxStatFailed;
+      }
+    }
+
+    const void *Host::fetchSuite(const char *suiteName, int suiteVersion)
+    {
+      if (strcmp(suiteName, kOfxPropertySuite)==0  && suiteVersion == 1) {
+        return Property::GetSuite(suiteVersion);
+      }
+      else if (strcmp(suiteName, kOfxMemorySuite)==0 && suiteVersion == 1) {
+        return (void*)&Memory::gMallocSuite;
+      }  
+    
+      ///printf("fetchSuite failed with host = %p, name = %s, version = %i\n", this, suiteName, suiteVersion);
+      return NULL;
+    }
+
+  } // Host
+
+} // OFX 

third_party/openfx/HostSupport/src/ofxhImageEffectAPI.cpp

@@ -0,0 +1,592 @@
+
+
+#include <assert.h>
+
+#include <string>
+#include <map>
+#include <ctype.h>
+
+// ofx
+#include "ofxImageEffect.h"
+
+// ofx host
+#include "ofxhBinary.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhClip.h"
+#include "ofxhParam.h"
+#include "ofxhMemory.h"
+#include "ofxhImageEffect.h"
+#include "ofxhPluginAPICache.h"
+#include "ofxhPluginCache.h"
+#include "ofxhHost.h"
+#include "ofxhImageEffectAPI.h"
+#include "ofxhXml.h"
+
+// Disable the "this pointer used in base member initialiser list" warning in Windows
+namespace OFX {
+
+  namespace Host {
+
+    namespace ImageEffect {
+
+      /// our global host bobject, set when the cache is created
+      OFX::Host::ImageEffect::Host *gImageEffectHost;
+
+      /// ctor
+#ifdef WINDOWS
+#pragma warning( disable : 4355 )
+#endif
+      ImageEffectPlugin::ImageEffectPlugin(PluginCache &pc, PluginBinary *pb, int pi, OfxPlugin *pl)
+        : Plugin(pb, pi, pl)
+        , _pc(pc)
+        , _baseDescriptor(NULL)
+        , _madeKnownContexts(false)
+      {
+        _baseDescriptor = gImageEffectHost->makeDescriptor(this);
+      }
+
+      ImageEffectPlugin::ImageEffectPlugin(PluginCache &pc,
+                                           PluginBinary *pb,
+                                           int pi,
+                                           const std::string &api,
+                                           int apiVersion,
+                                           const std::string &pluginId,
+                                           const std::string &rawId,
+                                           int pluginMajorVersion,
+                                           int pluginMinorVersion)
+        : Plugin(pb, pi, api, apiVersion, pluginId, rawId, pluginMajorVersion, pluginMinorVersion)
+        , _pc(pc)
+        , _baseDescriptor(NULL) 
+        , _madeKnownContexts(false)
+      {        
+        _baseDescriptor = gImageEffectHost->makeDescriptor(this);
+      }
+
+#ifdef WINDOWS
+#pragma warning( default : 4355 )
+#endif
+
+      ImageEffectPlugin::~ImageEffectPlugin()
+      {
+        _contexts.clear();
+        if(_pluginHandle) {
+          OfxPlugin *op = _pluginHandle->getOfxPlugin();
+          OfxStatus stat;
+          try {
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionUnload<<"()"<<std::endl;
+#           endif
+            stat = op->mainEntry(kOfxActionUnload, 0, 0, 0);
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionUnload<<"()->"<<StatStr(stat)<<std::endl;
+#           endif
+          } CatchAllSetStatus(stat, gImageEffectHost, op, kOfxActionUnload);
+          (void)stat;
+        }
+        delete _baseDescriptor;
+      }
+
+      APICache::PluginAPICacheI &ImageEffectPlugin::getApiHandler()
+      {
+        return _pc;
+      }
+
+
+      /// get the image effect descriptor
+      Descriptor &ImageEffectPlugin::getDescriptor() {
+        return *_baseDescriptor;
+      }
+
+      /// get the image effect descriptor const version
+      const Descriptor &ImageEffectPlugin::getDescriptor() const {
+        return *_baseDescriptor;
+      }
+
+      void ImageEffectPlugin::addContext(const std::string &context, std::unique_ptr<Descriptor> ied)
+      {
+        _contexts[context] = std::move(ied);
+        _knownContexts.insert(context);
+        _madeKnownContexts = true;
+      }
+
+      void ImageEffectPlugin::addContext(const std::string &context)
+      {
+        _knownContexts.insert(context);
+        _madeKnownContexts = true;
+      }
+
+      void ImageEffectPlugin::addContextInternal(const std::string &context) const
+      {
+        _knownContexts.insert(context);
+        _madeKnownContexts = true;
+      }
+
+      void ImageEffectPlugin::saveXML(std::ostream &os) 
+      {        
+        APICache::propertySetXMLWrite(os, getDescriptor().getProps(), 6);
+      }
+
+      const std::set<std::string> &ImageEffectPlugin::getContexts() const {
+        if (_madeKnownContexts) {
+          return _knownContexts;
+        } 
+        else {
+          const OFX::Host::Property::Set &eProps = getDescriptor().getProps();
+          int size = eProps.getDimension(kOfxImageEffectPropSupportedContexts);
+          for (int j=0;j<size;j++) {
+            std::string context = eProps.getStringProperty(kOfxImageEffectPropSupportedContexts, j);
+            addContextInternal(context);
+          }
+          return _knownContexts;
+        }
+      }
+
+      PluginHandle *ImageEffectPlugin::getPluginHandle() 
+      {
+        if(!_pluginHandle) {
+          _pluginHandle.reset(new OFX::Host::PluginHandle(this, _pc.getHost())); 
+          
+          OfxPlugin *op = _pluginHandle->getOfxPlugin();
+          
+          if (!op) {
+            _pluginHandle.reset();
+            return nullptr;
+          }
+
+          OfxStatus stat;
+          try {
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionLoad<<"()"<<std::endl;
+#           endif
+            stat = op->mainEntry(kOfxActionLoad, 0, 0, 0);
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionLoad<<"()->"<<StatStr(stat)<<std::endl;
+#           endif
+          } CatchAllSetStatus(stat, gImageEffectHost, op, kOfxActionLoad);
+
+          if (stat != kOfxStatOK && stat != kOfxStatReplyDefault) {
+            _pluginHandle.reset();
+            return nullptr;
+          }
+          
+          try {
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionDescribe<<"()"<<std::endl;
+#           endif
+            stat = op->mainEntry(kOfxActionDescribe, getDescriptor().getHandle(), 0, 0);
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)op<<"->"<<kOfxActionDescribe<<"()->"<<StatStr(stat)<<std::endl;
+#           endif
+          } CatchAllSetStatus(stat, gImageEffectHost, op, kOfxActionDescribe);
+
+          if (stat != kOfxStatOK && stat != kOfxStatReplyDefault) {
+            _pluginHandle.reset();
+            return nullptr;
+          }
+        }
+
+        return _pluginHandle.get();
+      }
+
+      Descriptor *ImageEffectPlugin::getContext(const std::string &context) 
+      {
+        std::map<std::string, std::unique_ptr<Descriptor>>::iterator it = _contexts.find(context);
+
+        if (it != _contexts.end()) {
+          //printf("found context description.\n");
+          return it->second.get();
+        }
+
+        if (_knownContexts.find(context) == _knownContexts.end()) {
+          return nullptr;
+        }
+
+        //        printf("doing context description.\n");
+
+        OFX::Host::Property::PropSpec inargspec[] = {
+          { kOfxImageEffectPropContext, OFX::Host::Property::eString, 1, true, context.c_str() },
+            Property::propSpecEnd
+        };
+        
+        OFX::Host::Property::Set inarg(inargspec);
+
+        PluginHandle *ph = getPluginHandle();
+        std::unique_ptr<ImageEffect::Descriptor> newContext( gImageEffectHost->makeDescriptor(getDescriptor(), this));
+
+        OfxStatus stat;
+        try {
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)ph->getOfxPlugin()<<"->"<<kOfxImageEffectActionDescribeInContext<<"("<<context<<")"<<std::endl;
+#         endif
+          stat = ph->getOfxPlugin()->mainEntry(kOfxImageEffectActionDescribeInContext, newContext->getHandle(), inarg.getHandle(), 0);
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)ph->getOfxPlugin()<<"->"<<kOfxImageEffectActionDescribeInContext<<"("<<context<<")->"<<StatStr(stat)<<std::endl;
+#         endif
+        } CatchAllSetStatus(stat, gImageEffectHost, ph->getOfxPlugin(), kOfxImageEffectActionDescribeInContext);
+
+        if (stat == kOfxStatOK || stat == kOfxStatReplyDefault) {
+          _contexts[context] = std::move(newContext);
+          return _contexts[context].get();
+        }
+        return nullptr;
+      }
+
+      ImageEffect::Instance* ImageEffectPlugin::createInstance(const std::string &context, void *clientData)
+      {          
+
+        /// todo - we need to make sure action:load is called, then action:describe again
+        /// (not because we are expecting the results to change, but because plugin
+        /// might get confused otherwise), then a describe_in_context
+
+        getPluginHandle();
+
+        Descriptor *desc = getContext(context);
+        
+        if (desc) {
+          ImageEffect::Instance *instance = gImageEffectHost->newInstance(clientData,
+                                                                          this,
+                                                                          *desc,
+                                                                          context);
+          instance->populate();
+          return instance;
+        }
+        return 0;
+      }
+
+      void ImageEffectPlugin::unload() {
+        if (_pluginHandle) {
+          OfxStatus stat;
+          try {
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)_pluginHandle->getOfxPlugin()<<"->"<<kOfxActionUnload<<"()"<<std::endl;
+#           endif
+            stat = (*_pluginHandle)->mainEntry(kOfxActionUnload, 0, 0, 0);
+#           ifdef OFX_DEBUG_ACTIONS
+              std::cout << "OFX: "<<(void*)_pluginHandle->getOfxPlugin()<<"->"<<kOfxActionUnload<<"()->"<<StatStr(stat)<<std::endl;
+#           endif
+          } CatchAllSetStatus(stat, gImageEffectHost, (*_pluginHandle), kOfxActionUnload);
+          (void)stat;
+        }
+      }
+
+      PluginCache::PluginCache(OFX::Host::ImageEffect::Host &host) 
+        : PluginAPICacheI(kOfxImageEffectPluginApi, 1, 1)
+        , _currentPlugin(0)
+        , _currentProp(0)
+        , _currentContext(0)
+        , _currentParam(0)
+        , _currentClip(0)
+        , _host(&host)
+      {
+        gImageEffectHost = &host;
+      }
+
+      PluginCache::~PluginCache() {}       
+
+      /// get the plugin by id.  vermaj and vermin can be specified.  if they are not it will
+      /// pick the highest found version.
+      ImageEffectPlugin *PluginCache::getPluginById(const std::string &id, int vermaj, int vermin)
+      {
+        // return the highest version one, which fits the pattern provided
+        ImageEffectPlugin *sofar = 0;
+        std::string identifier = id;
+
+        // Who says the pluginIdentifier is case-insensitive? OFX 1.3 spec doesn't mention this.
+        // http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#id472588
+        //for (size_t i=0;i<identifier.size();i++) {
+        //    identifier[i] = tolower(identifier[i]);
+        //}
+
+        for (std::vector<ImageEffectPlugin *>::iterator i=_plugins.begin();i!=_plugins.end();i++) {
+          ImageEffectPlugin *p = *i;
+
+          if (p->getIdentifier() != identifier) {
+            continue;
+          }
+
+          if (vermaj != -1 && p->getVersionMajor() != vermaj) {
+            continue;
+          }
+
+          if (vermin != -1 && p->getVersionMinor() != vermin) {
+            continue;
+          }
+
+          if (!sofar || p->trumps(sofar)) {
+            sofar = p;
+          }
+        }
+
+        return sofar;
+      }
+
+      /// whether we support this plugin.  
+      bool PluginCache::pluginSupported(OFX::Host::Plugin *p, std::string &reason) const {
+        return gImageEffectHost->pluginSupported(dynamic_cast<OFX::Host::ImageEffect::ImageEffectPlugin *>(p), reason);
+      }
+
+      /// get the plugin by label.  vermaj and vermin can be specified.  if they are not it will
+      /// pick the highest found version.
+      ImageEffectPlugin *PluginCache::getPluginByLabel(const std::string &label, int vermaj, int vermin)
+      {
+        // return the highest version one, which fits the pattern provided
+        ImageEffectPlugin *sofar = 0;
+
+        for (std::vector<ImageEffectPlugin *>::iterator i=_plugins.begin();i!=_plugins.end();i++) {
+          ImageEffectPlugin *p = *i;
+
+          if (p->getDescriptor().getProps().getStringProperty(kOfxPropLabel) != label) {
+            continue;
+          }
+
+          if (vermaj != -1 && p->getVersionMajor() != vermaj) {
+            continue;
+          }
+
+          if (vermin != -1 && p->getVersionMinor() != vermin) {
+            continue;
+          }
+
+          if (!sofar || p->trumps(sofar)) {
+            sofar = p;
+          }
+        }
+
+        return sofar;
+      }
+
+      const std::vector<ImageEffectPlugin *>& PluginCache::getPlugins() const
+      {
+        return _plugins;
+      }
+
+      const std::map<std::string, ImageEffectPlugin *>& PluginCache::getPluginsByID() const
+      {
+        return _pluginsByID;
+      }
+
+      /// handle the case where the info needs filling in from the file.  runs the "describe" action on the plugin.
+      void PluginCache::loadFromPlugin(Plugin *op) const {
+        std::string msg = "loading ";
+        msg += op->getRawIdentifier();
+
+        _host->loadingStatus(msg);
+
+        ImageEffectPlugin *p = dynamic_cast<ImageEffectPlugin*>(op);
+        assert(p);
+
+        PluginHandle plug(p, _host);
+
+        OfxStatus stat;
+        try {
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionLoad<<"()"<<std::endl;
+#         endif
+          stat = plug->mainEntry(kOfxActionLoad, 0, 0, 0);
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionLoad<<"()->"<<StatStr(stat)<<std::endl;
+#         endif
+        } CatchAllSetStatus(stat, gImageEffectHost, plug, kOfxActionLoad);
+
+        if (stat != kOfxStatOK && stat != kOfxStatReplyDefault) {
+          std::cerr << "load failed on plugin " << op->getIdentifier() << std::endl;          
+          return;
+        }
+
+        try {
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionDescribe<<"()"<<std::endl;
+#         endif
+          stat = plug->mainEntry(kOfxActionDescribe, p->getDescriptor().getHandle(), 0, 0);
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionDescribe<<"()->"<<StatStr(stat)<<std::endl;
+#         endif
+        } CatchAllSetStatus(stat, gImageEffectHost, plug, kOfxActionDescribe);
+
+        if (stat != kOfxStatOK && stat != kOfxStatReplyDefault) {
+          std::cerr << "describe failed on plugin " << op->getIdentifier() << std::endl;          
+          return;
+        }
+
+        ImageEffect::Descriptor &e = p->getDescriptor();
+        Property::Set &eProps = e.getProps();
+
+        int size = eProps.getDimension(kOfxImageEffectPropSupportedContexts);
+
+        for (int j=0;j<size;j++) {
+          std::string context = eProps.getStringProperty(kOfxImageEffectPropSupportedContexts, j);
+          p->addContext(context);
+        }
+
+        try {
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionUnload<<"()"<<std::endl;
+#         endif
+          stat = plug->mainEntry(kOfxActionUnload, 0, 0, 0);
+#         ifdef OFX_DEBUG_ACTIONS
+            std::cout << "OFX: "<<(void*)plug.getOfxPlugin()<<"->"<<kOfxActionUnload<<"()->"<<StatStr(stat)<<std::endl;
+#         endif
+        } CatchAllSetStatus(stat, gImageEffectHost, plug, kOfxActionUnload);
+
+        if (stat != kOfxStatOK && stat != kOfxStatReplyDefault) {
+          std::cerr << "unload failed on plugin " << op->getIdentifier() << std::endl;
+          return;
+        }
+      }
+
+
+      /// handler for preparing to read in a chunk of XML from the cache, set up context to do this
+      void PluginCache::beginXmlParsing(Plugin *p) {
+        _currentPlugin = dynamic_cast<ImageEffectPlugin*>(p);
+      }
+
+      /// XML handler : element begins (everything is stored in elements and attributes)       
+      void PluginCache::xmlElementBegin(const std::string &el, std::map<std::string, std::string> map) 
+      {
+        if (el == "apiproperties") {
+          return;
+        }
+
+        if (el == "context") {
+          std::unique_ptr<Descriptor> newContext(gImageEffectHost->makeDescriptor(_currentPlugin->getBinary()->getBundlePath(), _currentPlugin));
+          _currentContext = newContext.get();
+          _currentPlugin->addContext(map["name"], std::move(newContext));
+          return;
+        }
+
+        if (el == "param" && _currentContext) {
+          std::string pname = map["name"];
+          std::string ptype = map["type"];
+
+          _currentParam = _currentContext->paramDefine(ptype.c_str(), pname.c_str());
+          return;
+        }
+
+        if (el == "clip" && _currentContext) {
+          std::string cname = map["name"];
+
+          _currentClip = new ClipDescriptor(cname);
+          _currentContext->addClip(cname, _currentClip);
+          return;
+        }
+
+        if (_currentContext && _currentParam) {
+          APICache::propertySetXMLRead(el, map, _currentParam->getProperties(), _currentProp);
+          return;
+        }
+
+        if (_currentContext && _currentClip) {
+          APICache::propertySetXMLRead(el, map, _currentClip->getProps(), _currentProp);
+          return;
+        }
+
+        if (!_currentContext && !_currentParam) {
+          APICache::propertySetXMLRead(el, map, _currentPlugin->getDescriptor().getProps(), _currentProp);
+          return;
+        }
+
+        std::cout << "element " << el << "\n";
+        assert(false);
+      }
+
+      void PluginCache::xmlCharacterHandler(const std::string &) {
+      }
+
+      void PluginCache::xmlElementEnd(const std::string &el) {
+        if (el == "param") {
+          _currentParam = 0;
+        }
+
+        if (el == "context") {
+          _currentContext = 0;
+        }
+      }
+
+      void PluginCache::endXmlParsing() {
+        _currentPlugin = 0;
+      }
+
+      void PluginCache::saveXML(Plugin *ip, std::ostream &os) const {
+        ImageEffectPlugin *p = dynamic_cast<ImageEffectPlugin*>(ip);
+        if (p) {
+          p->saveXML(os);
+        }
+      }
+
+      void PluginCache::confirmPlugin(Plugin *p) {
+        ImageEffectPlugin *plugin = dynamic_cast<ImageEffectPlugin*>(p);
+        if (!plugin) {
+          return;
+        }
+        _plugins.push_back(plugin);
+
+        if (_pluginsByID.find(plugin->getIdentifier()) != _pluginsByID.end()) {
+          ImageEffectPlugin *otherPlugin = _pluginsByID[plugin->getIdentifier()];
+          if (plugin->trumps(otherPlugin)) {
+            _pluginsByID[plugin->getIdentifier()] = plugin;
+          }
+        } else {
+          _pluginsByID[plugin->getIdentifier()] = plugin;
+        }
+
+        MajorPlugin maj(plugin);
+
+        if (_pluginsByIDMajor.find(maj) != _pluginsByIDMajor.end()) {
+          ImageEffectPlugin *otherPlugin = _pluginsByIDMajor[maj];
+          if (plugin->trumps(otherPlugin)) {
+            _pluginsByIDMajor[maj] = plugin;
+          }
+        } else {
+          _pluginsByIDMajor[maj] = plugin;
+        }
+      }
+
+      Plugin *PluginCache::newPlugin(PluginBinary *pb,
+        int pi,
+        OfxPlugin *pl) {
+          ImageEffectPlugin *plugin = new ImageEffectPlugin(*this, pb, pi, pl);
+          return plugin;
+      }
+
+      Plugin *PluginCache::newPlugin(PluginBinary *pb,
+        int pi,
+        const std::string &api,
+        int apiVersion,
+        const std::string &pluginId,
+        const std::string &rawId,
+        int pluginMajorVersion,
+        int pluginMinorVersion) 
+      {
+        ImageEffectPlugin *plugin = new ImageEffectPlugin(*this, pb, pi, api, apiVersion, pluginId, rawId, pluginMajorVersion, pluginMinorVersion);
+        return plugin;
+      }
+
+      void PluginCache::dumpToStdOut()
+      {
+        if (_pluginsByID.empty())
+          std::cout << "No Plug-ins Found." << std::endl;
+
+        for(std::map<std::string, ImageEffectPlugin *>::const_iterator it =  _pluginsByID.begin(); it != _pluginsByID.end(); ++it)
+        {
+          std::cout << "Plug-in:" << it->first << std::endl;
+          std::cout << "\t" << "Filepath: " << it->second->getBinary()->getFilePath();
+          std::cout<< "(" << it->second->getIndex() << ")" << std::endl;
+
+          std::cout << "Contexts:" << std::endl;
+          const std::set<std::string>& contexts = it->second->getContexts();
+          for (std::set<std::string>::const_iterator it2 = contexts.begin(); it2 != contexts.end(); ++it2)
+            std::cout << "\t* " << *it2 << std::endl;
+          const Descriptor& d =  it->second->getDescriptor();
+          std::cout << "Inputs:" << std::endl;
+          const std::map<std::string, ClipDescriptor*>& inputs = d.getClips();
+          for (std::map<std::string, ClipDescriptor*>::const_iterator it2 = inputs.begin(); it2 != inputs.end(); ++it2)
+            std::cout << "\t\t* " << it2->first << std::endl;
+        }
+      }
+
+    } // ImageEffect
+      
+  } // Host
+
+} // OFX
+

third_party/openfx/HostSupport/src/ofxhInteract.cpp

@@ -0,0 +1,444 @@
+
+
+// ofx
+#include "ofxKeySyms.h"
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+
+// ofx host
+#include "ofxhBinary.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhClip.h"
+#include "ofxhParam.h"
+#include "ofxhMemory.h"
+#include "ofxhImageEffect.h"
+#include "ofxhInteract.h"
+#include "ofxOld.h" // old plugins may rely on deprecated properties being present
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace Interact {
+
+      //
+      // descriptor
+      //
+      static const Property::PropSpec interactDescriptorStuffs[] = {
+        { kOfxInteractPropHasAlpha , Property::eInt, 1, true, "0" },
+        { kOfxInteractPropBitDepth , Property::eInt, 1, true, "0" },
+        Property::propSpecEnd
+      };
+
+      Descriptor::Descriptor()
+        : _properties(interactDescriptorStuffs) 
+        , _state(eUninitialised)
+        , _entryPoint(NULL)
+      {
+      }
+
+      Descriptor::~Descriptor()
+      {
+      }
+
+      /// call describe on this descriptor
+      bool Descriptor::describe(int bitDepthPerComponent, bool hasAlpha)
+      {
+        if(_state == eUninitialised) {
+          _properties.setIntProperty(kOfxInteractPropBitDepth, bitDepthPerComponent);
+          _properties.setIntProperty(kOfxInteractPropHasAlpha, (int)(hasAlpha));
+
+          OfxStatus stat = callEntry(kOfxActionDescribe, getHandle(), NULL, NULL);
+          if(stat == kOfxStatOK || stat == kOfxStatReplyDefault) {
+            _state = eDescribed;
+          }
+          else {
+            _state = eFailed;
+          }
+        }
+        return _state == eDescribed;
+      }
+
+      // call the interactive entry point
+      OfxStatus Descriptor::callEntry(const char *action, 
+                                      void *handle,
+                                      OfxPropertySetHandle inArgs, 
+                                      OfxPropertySetHandle outArgs)
+      {
+        if(_entryPoint && _state != eFailed) {
+          return _entryPoint(action, handle, inArgs, outArgs);
+        }
+        else
+          return kOfxStatFailed;
+        
+        return kOfxStatOK;
+      }
+
+
+      ////////////////////////////////////////////////////////////////////////////////
+      static const Property::PropSpec interactInstanceStuffs[] = {
+        { kOfxPropEffectInstance, Property::ePointer, 1, true, NULL },
+        { kOfxPropInstanceData, Property::ePointer, 1, false, NULL },
+        { kOfxInteractPropPixelScale, Property::eDouble, 2, true, "1.0f" },
+        { kOfxInteractPropBackgroundColour , Property::eDouble, 3, true, "0.0f" },
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        { kOfxInteractPropViewportSize, Property::eDouble, 2, true, "100.0f" },
+#endif
+        { kOfxInteractPropSlaveToParam , Property::eString, 0, false, ""},
+        { kOfxInteractPropSuggestedColour , Property::eDouble, 3, true, "1.0f" },
+        Property::propSpecEnd
+      };
+
+      static const Property::PropSpec interactArgsStuffs[] = {
+        { kOfxPropEffectInstance, Property::ePointer, 1, false, NULL },
+        { kOfxPropTime, Property::eDouble, 1, false, "0.0" },
+        { kOfxImageEffectPropRenderScale, Property::eDouble, 2, false, "0.0" },
+        { kOfxInteractPropBackgroundColour , Property::eDouble, 3, false, "0.0f" },
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        { kOfxInteractPropViewportSize, Property::eDouble, 2, false, "0.0f" },
+#endif
+        { kOfxInteractPropPixelScale, Property::eDouble, 2, false, "1.0f" },
+        { kOfxInteractPropPenPosition, Property::eDouble, 2, false, "0.0" },
+        { kOfxInteractPropPenViewportPosition, Property::eInt, 2, false, "0" }, // new in OFX 1.2
+        { kOfxInteractPropPenPressure, Property::eDouble, 1, false, "0.0" },
+        { kOfxPropKeyString, Property::eString, 1, false, "" },
+        { kOfxPropKeySym, Property::eInt, 1, false, "0" },
+        Property::propSpecEnd
+      };
+
+      // instance
+
+      Instance::Instance(Descriptor& desc, void *effectInstance) 
+        : _descriptor(desc)
+        , _properties(interactInstanceStuffs)
+        , _state(desc.getState())
+        , _effectInstance(effectInstance)
+        , _argProperties(interactArgsStuffs)
+      {
+        _properties.setPointerProperty(kOfxPropEffectInstance, effectInstance);
+        _properties.setChainedSet(&desc.getProperties()); /// chain it into the descriptor props
+        _properties.setGetHook(kOfxInteractPropPixelScale, this);
+        _properties.setGetHook(kOfxInteractPropBackgroundColour,this);
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        _properties.setGetHook(kOfxInteractPropViewportSize,this);
+#endif
+        _properties.setGetHook(kOfxInteractPropSuggestedColour,this);
+
+        _argProperties.setGetHook(kOfxInteractPropPixelScale, this);
+        _argProperties.setGetHook(kOfxInteractPropBackgroundColour,this);
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        _argProperties.setGetHook(kOfxInteractPropViewportSize,this);
+#endif
+      }
+
+      Instance::~Instance()
+      {
+        /// call it directly incase CI failed and we should always tidy up after create instance
+        callEntry(kOfxActionDestroyInstance,  NULL);
+      }
+
+      /// call the entry point in the descriptor with action and the given args
+      OfxStatus Instance::callEntry(const char *action, Property::Set *inArgs)
+      {
+        if(_state != eFailed) {
+          OfxPropertySetHandle inHandle = inArgs ? inArgs->getHandle() : NULL ;
+          return _descriptor.callEntry(action, getHandle(), inHandle, NULL);
+        }
+        return kOfxStatFailed;
+      }
+      
+      // do nothing
+      int Instance::getDimension(const std::string &name) const
+      {
+        if(name == kOfxInteractPropPixelScale){
+          return 2;
+        }
+        else if(name == kOfxInteractPropBackgroundColour){
+          return 3;
+        }
+        else if(name == kOfxInteractPropSuggestedColour
+                ){
+          return 3;
+        }
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        else if(name == kOfxInteractPropViewportSize){
+          return 2;
+        }
+#endif
+        else
+          throw Property::Exception(kOfxStatErrValue);
+      }
+        
+      // do nothing function
+      void Instance::reset(const std::string &/*name*/)
+      {
+        // no-op
+      }
+
+      double Instance::getDoubleProperty(const std::string &name, int index) const
+      {   
+        if(name == kOfxInteractPropPixelScale){
+          if(index>=2) throw Property::Exception(kOfxStatErrBadIndex);
+          double first[2];
+          getPixelScale(first[0],first[1]);
+          return first[index];
+        }
+        else if(name == kOfxInteractPropBackgroundColour){
+          if(index>=3) throw Property::Exception(kOfxStatErrBadIndex);
+          double first[3];
+          getBackgroundColour(first[0],first[1],first[2]);
+          return first[index];
+        }
+        else if(name == kOfxInteractPropSuggestedColour
+                ){
+          if(index>=3) throw Property::Exception(kOfxStatErrBadIndex);
+          double first[3];
+          bool stat = getSuggestedColour(first[0],first[1],first[2]);
+          if (!stat) throw Property::Exception(kOfxStatReplyDefault);
+          return first[index];
+        }
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        else if(name == kOfxInteractPropViewportSize){
+          if(index>=2) throw Property::Exception(kOfxStatErrBadIndex);
+          double first[2];
+          getViewportSize(first[0],first[1]);
+          return first[index];
+        }
+#endif
+        else
+          throw Property::Exception(kOfxStatErrUnknown);
+      }
+
+      void Instance::getDoublePropertyN(const std::string &name, double *first, int n) const
+      {
+        if(name == kOfxInteractPropPixelScale){
+          if(n>2) throw Property::Exception(kOfxStatErrBadIndex);
+          getPixelScale(first[0],first[1]);
+        }
+        else if(name == kOfxInteractPropBackgroundColour){
+          if(n>3) throw Property::Exception(kOfxStatErrBadIndex);
+          getBackgroundColour(first[0],first[1],first[2]);
+        }
+        else if(name == kOfxInteractPropSuggestedColour
+                ){
+          if(n>3) throw Property::Exception(kOfxStatErrBadIndex);
+          bool stat = getSuggestedColour(first[0],first[1],first[2]);
+          if (!stat) throw Property::Exception(kOfxStatReplyDefault);
+        }
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+        else if(name == kOfxInteractPropViewportSize){
+          if(n>2) throw Property::Exception(kOfxStatErrBadIndex);
+          getViewportSize(first[0],first[1]);
+        }
+#endif
+        else
+          throw Property::Exception(kOfxStatErrUnknown);
+      }
+
+      void Instance::getSlaveToParam(std::vector<std::string>& params) const
+      {        
+        int nSlaveParams = _properties.getDimension(kOfxInteractPropSlaveToParam);
+                    
+        for (int i=0; i<nSlaveParams; i++) {
+          std::string param = _properties.getStringProperty(kOfxInteractPropSlaveToParam, i);
+          params.push_back(param);
+        }
+      }    
+      
+      /// initialise the argument properties
+      void Instance::initArgProp(OfxTime time, 
+                                 const OfxPointD &renderScale)
+      {
+        double pixelScale[2];
+        getPixelScale(pixelScale[0], pixelScale[1]);  
+        _argProperties.setDoublePropertyN(kOfxInteractPropPixelScale, pixelScale, 2);
+        _argProperties.setPointerProperty(kOfxPropEffectInstance, _effectInstance);
+        _argProperties.setPointerProperty(kOfxPropInstanceData, _properties.getPointerProperty(kOfxPropInstanceData));
+        _argProperties.setDoubleProperty(kOfxPropTime,time);
+        _argProperties.setDoublePropertyN(kOfxImageEffectPropRenderScale, &renderScale.x, 2);
+      }
+               
+      void Instance::setPenArgProps(const OfxPointD &penPos,
+                                    const OfxPointI &penPosViewport,
+                                    double  pressure)
+      {
+        _argProperties.setDoublePropertyN(kOfxInteractPropPenPosition, &penPos.x, 2);
+        _argProperties.setIntPropertyN(kOfxInteractPropPenViewportPosition, &penPosViewport.x, 2); // new in OFX 1.2
+        _argProperties.setDoubleProperty(kOfxInteractPropPenPressure, pressure);
+      }
+
+      void Instance::setKeyArgProps(int     key,
+                                    char*   keyString)
+      {
+        _argProperties.setIntProperty(kOfxPropKeySym,key);
+        _argProperties.setStringProperty(kOfxPropKeyString,keyString);
+      }
+
+      OfxStatus Instance::createInstanceAction()
+      {        
+        OfxStatus stat = callEntry(kOfxActionCreateInstance, NULL);
+        if(stat == kOfxStatOK || stat == kOfxStatReplyDefault) {
+          _state = eCreated;
+        }
+        else {
+          _state = eFailed;
+        }
+        return stat;
+      }
+
+      OfxStatus Instance::drawAction(OfxTime time,  
+                                     const OfxPointD &renderScale)
+      {        
+        initArgProp(time, renderScale);
+        return callEntry(kOfxInteractActionDraw, &_argProperties);
+      }
+
+      OfxStatus Instance::penMotionAction(OfxTime time, 
+                                          const OfxPointD &renderScale,
+                                          const OfxPointD &penPos,
+                                          const OfxPointI &penPosViewport,
+                                          double  pressure)
+      {
+        initArgProp(time, renderScale);
+        setPenArgProps(penPos, penPosViewport, pressure);
+        return callEntry(kOfxInteractActionPenMotion,&_argProperties);
+      }
+
+      OfxStatus Instance::penUpAction(OfxTime time, 
+                                      const OfxPointD &renderScale,
+                                      const OfxPointD &penPos,
+                                      const OfxPointI &penPosViewport,
+                                      double pressure)
+      {
+        initArgProp(time, renderScale);
+        setPenArgProps(penPos, penPosViewport, pressure);
+        return callEntry(kOfxInteractActionPenUp,&_argProperties);
+      }
+
+      OfxStatus Instance::penDownAction(OfxTime time, 
+                                        const OfxPointD &renderScale,
+                                        const OfxPointD &penPos,
+                                        const OfxPointI &penPosViewport,
+                                        double pressure)
+      {
+        initArgProp(time, renderScale);
+        setPenArgProps(penPos, penPosViewport, pressure);
+        return callEntry(kOfxInteractActionPenDown,&_argProperties);
+      }
+
+      OfxStatus Instance::keyDownAction(OfxTime time, 
+                                        const OfxPointD &renderScale,
+                                        int     key,
+                                        char*   keyString)
+      {
+        initArgProp(time, renderScale);
+        setKeyArgProps(key, keyString);
+        return callEntry(kOfxInteractActionKeyDown,&_argProperties);
+      }
+
+      OfxStatus Instance::keyUpAction(OfxTime time, 
+                                      const OfxPointD &renderScale,
+                                      int     key,
+                                      char*   keyString)
+      {
+        initArgProp(time, renderScale);
+        setKeyArgProps(key, keyString);
+        return callEntry(kOfxInteractActionKeyUp,&_argProperties);
+      }
+
+      OfxStatus Instance::keyRepeatAction(OfxTime time,
+                                          const OfxPointD &renderScale,
+                                          int     key,
+                                          char*   keyString)
+      {
+        initArgProp(time, renderScale);
+        setKeyArgProps(key, keyString);
+        return callEntry(kOfxInteractActionKeyRepeat,&_argProperties);
+      }
+      
+      OfxStatus Instance::gainFocusAction(OfxTime time,
+                                          const OfxPointD &renderScale)
+      {
+        initArgProp(time, renderScale);
+        return callEntry(kOfxInteractActionGainFocus,&_argProperties);
+      }
+
+      OfxStatus Instance::loseFocusAction(OfxTime  time,
+                                          const OfxPointD &renderScale)
+      {
+        initArgProp(time, renderScale);
+        return callEntry(kOfxInteractActionLoseFocus,&_argProperties);
+      }
+
+      ////////////////////////////////////////////////////////////////////////////////
+      ////////////////////////////////////////////////////////////////////////////////
+      ////////////////////////////////////////////////////////////////////////////////
+      // Interact suite functions
+
+      static OfxStatus interactSwapBuffers(OfxInteractHandle handle)
+      {
+        try {
+        Interact::Instance *interactInstance = reinterpret_cast<Interact::Instance*>(handle);
+        if(interactInstance)
+          return interactInstance->swapBuffers();
+        else
+          return kOfxStatErrBadHandle;
+        } catch (...) {
+          return kOfxStatFailed;
+        }
+      }
+      
+      static OfxStatus interactRedraw(OfxInteractHandle handle)
+      {
+        try {
+        Interact::Instance *interactInstance = reinterpret_cast<Interact::Instance*>(handle);
+        if(interactInstance)
+          return interactInstance->redraw();
+        else
+          return kOfxStatErrBadHandle;
+        } catch (...) {
+          return kOfxStatFailed;
+        }
+      }
+      
+      static OfxStatus interactGetPropertySet(OfxInteractHandle handle, OfxPropertySetHandle *property)
+      {
+        try {
+        Interact::Base *interact = reinterpret_cast<Interact::Base*>(handle);
+        if (!property) {
+          return kOfxStatErrBadHandle;
+        }
+
+        if (interact) {
+          *property = interact->getPropHandle();
+
+          return kOfxStatOK;
+        }
+        *property = NULL;
+
+        return kOfxStatErrBadHandle;
+        } catch (...) {
+          return kOfxStatFailed;
+        }
+      }
+      
+      /// the interact suite
+      static const OfxInteractSuiteV1 gSuite = {
+        interactSwapBuffers,
+        interactRedraw,
+        interactGetPropertySet
+      };
+
+      /// function to get the sutie
+      const void *GetSuite(int version) {
+        if(version == 1)
+          return (void *) &gSuite;
+        return NULL;
+      }
+
+
+    } // Interact
+
+  } // Host
+
+} // OFX

third_party/openfx/HostSupport/src/ofxhMemory.cpp

@@ -0,0 +1,64 @@
+
+
+// ofx host
+
+// ofx
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+
+// ofx host
+#include "ofxhMemory.h"
+
+namespace OFX {
+
+  namespace Host {
+
+    namespace Memory {
+
+      Instance::Instance() : _ptr(0), _locked(0) {}
+
+      Instance::~Instance() {
+        delete [] _ptr;
+      }
+
+      bool Instance::alloc(size_t nBytes) {
+        if(!_locked){
+          if(_ptr)
+            freeMem();
+          _ptr = new char[nBytes];
+          return true;
+        }
+        else
+          return false;
+      }
+
+      OfxImageMemoryHandle Instance::getHandle(){
+        return (OfxImageMemoryHandle)this;
+      }
+
+      void Instance::freeMem(){
+        delete [] _ptr;
+        _ptr = 0;
+        _locked = 0;
+      }
+
+      void* Instance::getPtr() {
+        return _ptr;
+      }
+
+      void Instance::lock() {
+        ++_locked;
+      }
+
+      void Instance::unlock() {
+        if (_locked > 0) {
+          --_locked;
+        }
+      }
+
+    } // Memory
+
+  } // Host
+
+} // OFX
+

third_party/openfx/HostSupport/src/ofxhPluginAPICache.cpp

@@ -0,0 +1,135 @@
+
+
+#include <assert.h>
+
+#include <string>
+#include <map>
+
+// ofx
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+
+// ofx host
+#include "ofxhBinary.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhClip.h"
+#include "ofxhParam.h"
+#include "ofxhMemory.h"
+#include "ofxhImageEffect.h"
+#include "ofxhPluginAPICache.h"
+#include "ofxhPluginCache.h"
+#include "ofxhHost.h"
+#include "ofxhImageEffectAPI.h"
+#include "ofxhXml.h"
+
+namespace OFX
+{
+  namespace Host
+  {
+    namespace APICache
+    {
+      void PluginAPICacheI::registerInCache(OFX::Host::PluginCache &pluginCache) {
+        pluginCache.registerAPICache(_apiName, _apiVersionMin, _apiVersionMax, this);
+      }      
+
+      void propertySetXMLRead(const std::string &el,
+                              std::map<std::string, std::string> map,
+                              Property::Set &set,
+                              Property::Property *&currentProp) {
+        if (el == "property") {
+          std::string propName = map["name"];
+          std::string propType = map["type"];
+          int dimension = atoi(map["dimension"].c_str());
+          
+          currentProp = set.fetchProperty(propName, false);
+          
+          if(!currentProp) {
+            if (propType == "int") {
+              currentProp = new Property::Int(propName, dimension, false, 0);
+            } else if (propType == "string") {
+              currentProp = new Property::String(propName, dimension, false, "");
+            } else if (propType == "double") {
+              currentProp = new Property::Double(propName, dimension, false, 0);
+            } else if (propType == "pointer") {
+              currentProp = new Property::Pointer(propName, dimension, false, 0);
+            }
+            set.addProperty(currentProp);
+          }
+          return;
+        }
+        
+        if (el == "value" && currentProp) {
+          int index = atoi(map["index"].c_str());
+          std::string value = map["value"];
+          
+          switch (currentProp->getType()) {
+          case Property::eInt:
+            set.setIntProperty(currentProp->getName(), atoi(value.c_str()), index);
+            break;
+          case Property::eString:
+            set.setStringProperty(currentProp->getName(), value, index);
+            break;
+          case Property::eDouble:
+            set.setDoubleProperty(currentProp->getName(), atof(value.c_str()), index);
+            break;
+          case Property::ePointer:
+            break;
+          default:
+            break;
+          }
+
+          return;
+        }
+
+        std::cout << "got unrecognised key " << el << "\n";
+
+        assert(false);
+      }
+      
+      static void propertyXMLWrite(std::ostream &o, Property::Property *prop, const std::string &indent="")
+      {        
+        if (prop->getType() != Property::ePointer)  {
+          
+          o << indent << "<property "
+            << XML::attribute("name", prop->getName())
+            << XML::attribute("type", Property::gTypeNames[prop->getType()])
+            << XML::attribute("dimension", prop->getFixedDimension()) 
+            << ">\n";
+          
+          for (int i=0;i<prop->getDimension();i++) {
+            o << indent << "  <value " 
+              << XML::attribute("index", i)
+              << XML::attribute("value", prop->getStringValue(i)) 
+              << "/>\n";
+          }
+          
+          o << indent << "</property>\n";
+        }
+      }
+
+      void propertyXMLWrite(std::ostream &o, const Property::Set &set, const std::string &name, int indent)
+      {
+        Property::Property *prop = set.fetchProperty(name);
+
+        if(prop) {
+          std::string indent_prefix(indent, ' ');
+          propertyXMLWrite(o, prop, indent_prefix);
+        }
+      }
+
+      void propertySetXMLWrite(std::ostream &o, const Property::Set &set, int indent) 
+      {
+        std::string indent_prefix(indent, ' ');
+
+        for (Property::PropertyMap::const_iterator i = set.getProperties().begin();
+             i != set.getProperties().end();
+             i++)
+          {
+            Property::Property *prop = i->second;
+            propertyXMLWrite(o, prop, indent_prefix);
+          }
+      }
+
+    }
+  }
+}

third_party/openfx/HostSupport/src/ofxhPluginCache.cpp

@@ -0,0 +1,694 @@
+
+
+#include <assert.h>
+
+#include <map>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "expat.h"
+
+// ofx
+#include "ofxCore.h"
+#include "ofxImageEffect.h"
+
+// ofx host
+#include "ofxhBinary.h"
+#include "ofxhPropertySuite.h"
+#include "ofxhMemory.h"
+#include "ofxhPluginAPICache.h"
+#include "ofxhPluginCache.h"
+#include "ofxhHost.h"
+#include "ofxhXml.h"
+
+#if defined (__linux__) || defined (__FreeBSD__)
+
+#define DIRLIST_SEP_CHARS ":;"
+#define DIRSEP "/"
+#include <dirent.h>
+
+static const char *getArchStr() 
+{
+  if(sizeof(void *) == 4) {
+#if defined(__linux__)
+    return  "Linux-x86";
+#else
+    return  "FreeBSD-x86";
+#endif
+  }
+  else {
+#if defined(__linux__)
+    return  "Linux-x86-64";
+#else
+    return  "FreeBSD-x86-64";
+#endif
+  }
+}
+
+#define ARCHSTR getArchStr()
+
+#elif defined (__APPLE__)
+
+#define DIRLIST_SEP_CHARS ";:"
+#if defined(__x86_64) || defined(__x86_64__)
+#define ARCHSTR "MacOS-x86-64"
+#else
+#define ARCHSTR "MacOS"
+#endif
+#define DIRSEP "/"
+#include <dirent.h>
+
+#elif defined (WINDOWS)
+#define DIRLIST_SEP_CHARS ";"
+#ifdef _WIN64
+#define ARCHSTR "win64"
+#else
+#define ARCHSTR "win32"
+#endif
+#define DIRSEP "\\"
+
+#include "shlobj.h"
+#include "tchar.h"
+#endif
+
+OFX::Host::PluginCache* OFX::Host::PluginCache::gPluginCachePtr = 0;
+
+// Define this to enable ofx plugin cache debug messages.
+//#define CACHE_DEBUG
+
+using namespace OFX::Host;
+
+
+/// try to open the plugin bundle object and query it for plugins
+void PluginBinary::loadPluginInfo(PluginCache *cache) {      
+  if (isInvalid()) {
+    return;
+  }
+  _fileModificationTime = _binary.getTime();
+  _fileSize = _binary.getSize();
+  _binaryChanged = false;
+  
+  // Take a reference to load the binary only once per session. It will
+  // eventually be unloaded in the destructor (see below).
+  // This avoid lots of useless calls to dlopen()/dlclose().
+  if (!_binary.isLoaded()) {
+    _binary.ref();
+  }
+
+  int (*getNo)(void) = (int(*)()) _binary.findSymbol("OfxGetNumberOfPlugins");
+  OfxPlugin* (*getPlug)(int) = (OfxPlugin*(*)(int)) _binary.findSymbol("OfxGetPlugin");
+  
+  if (getNo == 0 || getPlug == 0) {
+    
+    _binary.setInvalid(true);
+    
+  } else {
+    int pluginCount = (*getNo)();
+    
+    _plugins.reserve(pluginCount);
+    
+    for (int i=0;i<pluginCount;i++) {
+      OfxPlugin *plug = (*getPlug)(i);
+      
+      APICache::PluginAPICacheI *api = cache->findApiHandler(plug->pluginApi, plug->apiVersion);
+      assert(api);
+      
+      _plugins.push_back(api->newPlugin(this, i, plug));
+    }
+  }
+}
+
+PluginBinary::~PluginBinary() {
+  std::vector<Plugin*>::iterator i = _plugins.begin();
+  while (i != _plugins.end()) {
+    delete *i;
+    i++;
+  }
+  // release the last reference to the binary, which should unload it
+  // if this reference was taken by loadPluginInfo().
+  if (_binary.isLoaded()) {
+    _binary.unref();
+  }
+  assert(!_binary.isLoaded());
+}
+
+PluginHandle::PluginHandle(Plugin *p, OFX::Host::Host *host)
+{
+  _b = p->getBinary();
+  _b->_binary.ref();
+  _op = 0;
+  OfxPlugin* (*getPlug)(int) = (OfxPlugin*(*)(int)) _b->_binary.findSymbol("OfxGetPlugin");
+  if (getPlug) {
+    _op = getPlug(p->getIndex());
+    if (_op) {         
+      _op->setHost(host->getHandle());
+    }
+  }
+}
+
+PluginHandle::~PluginHandle() {
+  _b->_binary.unref();
+}
+
+
+#if defined (WINDOWS)
+const TCHAR *getStdOFXPluginPath(const std::string &hostId = "Plugins")
+{
+  static TCHAR buffer[MAX_PATH];
+  static int gotIt = 0;
+  if(!gotIt) {
+    gotIt = 1;	   
+    SHGetFolderPath(NULL, CSIDL_PROGRAM_FILES_COMMON, NULL, SHGFP_TYPE_CURRENT, buffer);
+    strcat_s(buffer, MAX_PATH, __T("\\OFX\\Plugins"));
+  }
+  return buffer;	   
+}
+#endif
+
+static
+std::string OFXGetEnv(const char* e)
+{
+#if defined(WINDOWS) && !defined(__MINGW32__)
+  size_t requiredSize;
+  getenv_s(&requiredSize, 0, 0, e);
+  std::vector<char> buffer(requiredSize);
+  if(requiredSize >0)
+    {
+      getenv_s(&requiredSize, &buffer.front(), requiredSize, e);
+      return &buffer.front();
+    }
+  return "";
+#else
+  if(getenv(e))
+    return getenv(e);
+#endif
+  return "";
+}
+
+PluginCache* PluginCache::getPluginCache()
+{
+  if(!gPluginCachePtr)
+    gPluginCachePtr = new PluginCache();
+  return gPluginCachePtr;
+}
+
+void PluginCache::clearPluginCache()
+{
+  delete gPluginCachePtr;
+  gPluginCachePtr = 0;
+}
+
+PluginCache::~PluginCache()
+{
+  for(std::list<PluginBinary *>::iterator it=_binaries.begin(); it != _binaries.end(); ++it) {
+    delete (*it);
+  }
+  _binaries.clear();
+}
+
+PluginCache::PluginCache() : _hostSpec(0), _xmlCurrentBinary(0), _xmlCurrentPlugin(0) {
+  
+  _cacheVersion = "";
+  _ignoreCache = false;
+  _dirty = false;
+  _enablePluginSeek = true;
+  
+  std::string s = OFXGetEnv("OFX_PLUGIN_PATH");
+  
+    
+  while (s.length()) {
+      
+    int spos = int(s.find_first_of(DIRLIST_SEP_CHARS));
+    
+    std::string path;
+    
+    if (spos != -1) {
+      path = s.substr(0, spos);
+      s = s.substr(spos+1);
+    } 
+    else {
+      path = s;
+      s = "";
+    }
+    
+    _pluginPath.push_back(path);
+  }
+  
+#if defined(WINDOWS)
+  _pluginPath.push_back(getStdOFXPluginPath());
+  _pluginPath.push_back("C:\\Program Files\\Common Files\\OFX\\Plugins");
+#endif
+#if defined(__linux__) || defined(__FreeBSD__)
+  _pluginPath.push_back("/usr/OFX/Plugins");
+#endif
+#if defined(__APPLE__)
+  _pluginPath.push_back("/Library/OFX/Plugins");
+#endif
+}
+
+void PluginCache::setPluginHostPath(const std::string &hostId) {
+#if defined(WINDOWS)
+  _pluginPath.push_back(getStdOFXPluginPath(hostId));
+  _pluginPath.push_back("C:\\Program Files\\Common Files\\OFX\\" + hostId);
+#endif
+#if defined(__linux__) || defined(__FreeBSD__)
+  _pluginPath.push_back("/usr/OFX/" + hostId);
+#endif
+#if defined(__APPLE__)
+  _pluginPath.push_back("/Library/OFX/" + hostId);
+#endif
+}
+
+void PluginCache::scanDirectory(std::set<std::string> &foundBinFiles, const std::string &dir, bool recurse)
+{
+#ifdef CACHE_DEBUG
+  printf("looking in %s for plugins\n", dir.c_str());
+#endif
+  
+#if defined (WINDOWS)
+  WIN32_FIND_DATA findData;
+  HANDLE findHandle;
+#else
+  DIR *d = opendir(dir.c_str());
+  if (!d) {
+    return;
+  }
+#endif
+  
+  _pluginDirs.push_back(dir.c_str());
+  
+#if defined (UNIX)
+  while (dirent *de = readdir(d))
+#elif defined (WINDOWS)
+    findHandle = FindFirstFile((dir + "\\*").c_str(), &findData);
+  
+  if (findHandle == INVALID_HANDLE_VALUE) 
+    {
+      return;
+    }
+  
+  while (1)
+#endif
+    {
+#if defined (UNIX)
+      std::string name = de->d_name;
+      bool isdir = true;
+#else
+      std::string name = findData.cFileName;
+      bool isdir = (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
+#endif
+      if (name.find(".ofx.bundle") != std::string::npos) {
+        std::string barename = name.substr(0, name.length() - strlen(".bundle"));
+        std::string bundlename = dir + DIRSEP + name;
+        std::string binpath = dir + DIRSEP + name + DIRSEP "Contents" DIRSEP + ARCHSTR + DIRSEP + barename;
+          
+        // don't insert binpath yet, do it later because of Mac OS X Universal stuff
+        //foundBinFiles.insert(binpath);
+
+#if defined(__APPLE__) && (defined(__x86_64) || defined(__x86_64__))
+        /* From the OpenFX specification:
+           
+           MacOS-x86-64 - for Apple Macintosh OS X, specifically on
+           intel x86 CPUs running AMD's 64 bit extensions. 64 bit host
+           applications should check this first, and if it doesn't
+           exist or is empty, fall back to "MacOS" looking for a
+           universal binary.
+        */
+          
+        std::string binpath_universal = dir + DIRSEP + name + DIRSEP "Contents" DIRSEP + "MacOS" + DIRSEP + barename;
+        if (_knownBinFiles.find(binpath_universal) != _knownBinFiles.end()) {
+          binpath = binpath_universal;
+        }
+#endif
+        if (_knownBinFiles.find(binpath) == _knownBinFiles.end()) {
+#ifdef CACHE_DEBUG
+          printf("found non-cached binary %s\n", binpath.c_str());
+#endif
+          _dirty = true;
+          
+          // the binary was not in the cache
+          
+          PluginBinary *pb = 0;
+#if defined(__x86_64) || defined(__x86_64__)
+          pb = new PluginBinary(binpath, bundlename, this);
+#  if defined(__APPLE__)
+          if (pb->isInvalid()) {
+            // fallback to "MacOS"
+            delete pb;
+            binpath = binpath_universal;
+            pb = new PluginBinary(binpath, bundlename, this);
+          }
+#  endif
+#else
+          pb = new PluginBinary(binpath, bundlename, this);
+#endif
+          _binaries.push_back(pb);
+          _knownBinFiles.insert(binpath);
+          foundBinFiles.insert(binpath);
+
+          for (int j=0;j<pb->getNPlugins();j++) {
+            Plugin *plug = &pb->getPlugin(j);
+            const APICache::PluginAPICacheI &api = plug->getApiHandler();
+            api.loadFromPlugin(plug);
+          }
+        } else {
+#ifdef CACHE_DEBUG
+          printf("found cached binary %s\n", binpath.c_str());
+#endif
+        }
+        // insert final path (universal or not) in the list of found files
+        foundBinFiles.insert(binpath);
+      } else {
+        if (isdir && (recurse && name[0] != '@' && name != "." && name != "..")) {
+          scanDirectory(foundBinFiles, dir + DIRSEP + name, recurse);
+        }
+      }
+#if defined(WINDOWS)
+      int rval = FindNextFile(findHandle, &findData);
+      
+      if (rval == 0) {
+        break;
+      }
+#endif
+    }
+  
+#if defined(UNIX)
+  closedir(d);
+#else
+  FindClose(findHandle);
+#endif
+}
+
+std::string PluginCache::seekPluginFile(const std::string &baseName) const {
+  // Exit early if disabled
+  if (!_enablePluginSeek)
+    return "";
+  
+  for (std::list<std::string>::const_iterator paths= _pluginDirs.begin();
+       paths != _pluginDirs.end();
+       paths++) {
+    std::string candidate = *paths + DIRSEP + baseName;
+    FILE *f = fopen(candidate.c_str(), "r");
+    if (f) {
+      fclose(f);
+      return candidate;
+    }
+  }
+  return "";
+}
+
+void PluginCache::scanPluginFiles()
+{
+  std::set<std::string> foundBinFiles;
+  
+  for (std::list<std::string>::iterator paths= _pluginPath.begin();
+       paths != _pluginPath.end();
+       paths++) {
+    scanDirectory(foundBinFiles, *paths, _nonrecursePath.find(*paths) == _nonrecursePath.end());
+  }
+  
+  std::list<PluginBinary *>::iterator i=_binaries.begin();
+  while (i!=_binaries.end()) {
+    PluginBinary *pb = *i;
+    
+    if (foundBinFiles.find(pb->getFilePath()) == foundBinFiles.end()) {
+      
+      // the binary was in the cache, but was not on the path
+      
+      _dirty = true;
+      i = _binaries.erase(i);
+      delete pb;
+      
+    } else {
+      
+      bool binChanged = pb->hasBinaryChanged();
+      
+      // the binary was in the cache, but the binary has changed and thus we need to reload
+      if (binChanged) {
+        pb->loadPluginInfo(this);
+        _dirty = true;
+      }
+      
+      for (int j=0;j<pb->getNPlugins();j++) {
+        Plugin *plug = &pb->getPlugin(j);
+        APICache::PluginAPICacheI &api = plug->getApiHandler();
+        
+        if (binChanged) {
+          api.loadFromPlugin(plug);
+        }
+        
+        std::string reason;
+        
+        if (api.pluginSupported(plug, reason)) {
+          _plugins.push_back(plug);
+          api.confirmPlugin(plug);
+        } else {
+          std::cerr << "ignoring plugin " << plug->getIdentifier() <<
+            " as unsupported (" << reason << ")" << std::endl;
+        }
+      }
+      
+      i++;
+    }
+  }
+}
+
+
+/// callback for XML parser
+static void elementBeginHandler(void *userData, const XML_Char *name, const XML_Char **atts) {
+  PluginCache::getPluginCache()->elementBeginCallback(userData, name, atts);
+}
+
+/// callback for XML parser
+static void elementCharHandler(void *userData, const XML_Char *data, int len) {
+  PluginCache::getPluginCache()->elementCharCallback(userData, data, len);
+}
+
+/// callback for XML parser
+static void elementEndHandler(void *userData, const XML_Char *name) {
+  PluginCache::getPluginCache()->elementEndCallback(userData, name);
+}
+
+static bool mapHasAll(const std::map<std::string, std::string> &attmap, const char **atts) {
+  while (*atts) {
+    if (attmap.find(*atts) == attmap.end()) {
+      return false;
+    }
+    atts++;
+  }
+  return true;
+}
+
+void PluginCache::elementBeginCallback(void */*userData*/, const XML_Char *name, const XML_Char **atts) {
+  if (_ignoreCache) {
+    return;
+  }
+  
+  std::string ename = name;
+  std::map<std::string, std::string> attmap;
+  
+  while (*atts) {
+    attmap[atts[0]] = atts[1];
+    atts += 2;
+  }
+  
+  /// XXX: validate in general
+  
+  if (ename == "cache") {
+    std::string cacheversion = attmap["version"];
+    if (cacheversion != _cacheVersion) {
+#ifdef CACHE_DEBUG
+      printf("mismatched version, ignoring cache (got '%s', wanted '%s')\n",
+             cacheversion.c_str(),
+             _cacheVersion.c_str());
+#endif
+      _ignoreCache = true;
+    }
+  }
+  
+  if (ename == "binary") {
+    const char *binAtts[] = {"path", "bundle_path", "mtime", "size", NULL};
+    
+    if (!mapHasAll(attmap, binAtts)) {
+      // no path: bad XML
+    }
+    
+    std::string fname = attmap["path"];
+    std::string bname = attmap["bundle_path"];
+    time_t mtime = OFX::Host::Property::stringToInt(attmap["mtime"]);
+    size_t size = OFX::Host::Property::stringToInt(attmap["size"]);
+    
+    _xmlCurrentBinary = new PluginBinary(fname, bname, mtime, size);
+    _binaries.push_back(_xmlCurrentBinary);
+    _knownBinFiles.insert(fname);
+    return;
+  }
+  
+  if (ename == "plugin" && _xmlCurrentBinary && !_xmlCurrentBinary->hasBinaryChanged()) {
+    const char *plugAtts[] = {"api", "name", "index", "api_version", "major_version", "minor_version", NULL};
+    
+    if (!mapHasAll(attmap, plugAtts)) {
+      // no path: bad XML
+    }
+    
+    std::string api = attmap["api"];
+    std::string rawIdentifier = attmap["name"];
+    
+    std::string identifier = rawIdentifier;
+    
+    // Who says the pluginIdentifier is case-insensitive? OFX 1.3 spec doesn't mention this.
+    // http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#id472588
+    //for (size_t i=0;i<identifier.size();i++) {
+    //  identifier[i] = tolower(identifier[i]);
+    //}
+    
+    int idx = OFX::Host::Property::stringToInt(attmap["index"]);
+    int api_version = OFX::Host::Property::stringToInt(attmap["api_version"]);
+    int major_version = OFX::Host::Property::stringToInt(attmap["major_version"]);
+    int minor_version = OFX::Host::Property::stringToInt(attmap["minor_version"]);
+    
+    APICache::PluginAPICacheI *apiCache = findApiHandler(api, api_version);
+    if (apiCache) {
+      
+      Plugin *pe = apiCache->newPlugin(_xmlCurrentBinary, idx, api, api_version, identifier, rawIdentifier, major_version, minor_version);
+      _xmlCurrentBinary->addPlugin(pe);
+      _xmlCurrentPlugin = pe;
+      apiCache->beginXmlParsing(pe);
+    }
+    
+    return;
+  }
+  
+  if (_xmlCurrentPlugin) {
+    APICache::PluginAPICacheI &api = _xmlCurrentPlugin->getApiHandler();
+    api.xmlElementBegin(name, attmap);
+  }
+  
+}
+
+void PluginCache::elementCharCallback(void */*userData*/, const XML_Char *data, int size)
+{
+  if (_ignoreCache) {
+    return;
+  }
+  
+  std::string s(data, size);
+  if (_xmlCurrentPlugin) {
+    APICache::PluginAPICacheI &api = _xmlCurrentPlugin->getApiHandler();
+    api.xmlCharacterHandler(s);
+  } else {
+    /// XXX: we only want whitespace
+  }
+}
+
+void PluginCache::elementEndCallback(void */*userData*/, const XML_Char *name) {
+  if (_ignoreCache) {
+    return;
+  }
+  
+  std::string ename = name;
+  
+  /// XXX: validation?
+  
+  if (ename == "plugin") {
+    if (_xmlCurrentPlugin) {
+      APICache::PluginAPICacheI &api = _xmlCurrentPlugin->getApiHandler();
+      api.endXmlParsing();
+    }
+    _xmlCurrentPlugin = 0;
+    return;
+  }
+  
+  if (ename == "bundle") {
+    _xmlCurrentBinary = 0;
+    return;
+  }
+  
+  if (_xmlCurrentPlugin) {
+    APICache::PluginAPICacheI &api = _xmlCurrentPlugin->getApiHandler();
+    api.xmlElementEnd(name);
+  }
+}
+
+void PluginCache::readCache(std::istream &ifs) {
+  XML_Parser xP = XML_ParserCreate(NULL);
+  XML_SetElementHandler(xP, elementBeginHandler, elementEndHandler);
+  XML_SetCharacterDataHandler(xP, elementCharHandler);
+  
+  while (ifs.good()) {
+    char buf[1001] = {0};
+    ifs.read(buf, 1000);
+    
+    if (buf[0] == 0) {
+      XML_Parse(xP, "", 0, XML_TRUE);
+      break;
+    }
+    
+    int p = XML_Parse(xP, buf, int(strlen(buf)), XML_FALSE);
+    
+    if (p == XML_STATUS_ERROR) {
+      std::cout << "xml error : " << XML_GetErrorCode(xP) << std::endl;
+      /// XXX: do something here
+      break;
+    }
+  }
+  
+  XML_ParserFree(xP);
+}
+
+void PluginCache::writePluginCache(std::ostream &os) const {
+#ifdef CACHE_DEBUG
+  printf("writing pluginCache with version = %s\n", _cacheVersion.c_str());
+#endif
+  
+  os << "<cache version=\"" << _cacheVersion << "\">\n";
+  for (std::list<PluginBinary *>::const_iterator i=_binaries.begin();i!=_binaries.end();i++) {
+    PluginBinary *b = *i;
+    os << "<bundle>\n";
+    os << "  <binary " 
+       << XML::attribute("bundle_path", b->getBundlePath()) 
+       << XML::attribute("path", b->getFilePath())
+       << XML::attribute("mtime", int(b->getFileModificationTime()))
+       << XML::attribute("size", int(b->getFileSize())) << "/>\n";
+    
+    for (int j=0;j<b->getNPlugins();j++) {
+      Plugin *p = &b->getPlugin(j);
+      
+      
+      os << "  <plugin " 
+         << XML::attribute("name", p->getRawIdentifier()) 
+         << XML::attribute("index", p->getIndex()) 
+         << XML::attribute("api", p->getPluginApi())
+         << XML::attribute("api_version", p->getApiVersion())
+         << XML::attribute("major_version", p->getVersionMajor())
+         << XML::attribute("minor_version", p->getVersionMinor())
+         << ">\n";
+      																      
+      const APICache::PluginAPICacheI &api = p->getApiHandler();
+      os << "    <apiproperties>\n"; 
+      api.saveXML(p, os);
+      os << "    </apiproperties>\n";											    
+				
+      os << "  </plugin>\n";
+    }
+    os << "</bundle>\n";
+  }
+  os << "</cache>\n";
+}
+
+
+APICache::PluginAPICacheI *PluginCache::findApiHandler(const std::string &api, int version) {
+  std::list<PluginCacheSupportedApi>::iterator i = _apiHandlers.begin();
+  while (i != _apiHandlers.end()) {
+    if (i->matches(api, version)) {
+      return i->handler;
+    }
+    i++;
+  }
+  return 0;
+}

third_party/openfx/HostSupport/src/ofxhUtilities.cpp

@@ -0,0 +1,37 @@
+
+
+#include "ofxCore.h"
+#include "ofxhUtilities.h"
+
+namespace OFX {
+
+  /// get me deepest bit depth 
+  std::string FindDeepestBitDepth(const std::string &s1, const std::string &s2)
+  {
+    if(s1 == kOfxBitDepthNone) {
+      return s2;
+    }
+    else if(s1 == kOfxBitDepthByte) {
+      if(s2 == kOfxBitDepthShort || s2 == kOfxBitDepthFloat)
+        return s2;
+      return s1;
+    }
+    else if(s1 == kOfxBitDepthShort) {
+      if(s2 == kOfxBitDepthFloat)
+        return s2;
+      return s1;
+    }
+    else if(s1 == kOfxBitDepthHalf) {
+      if(s2 == kOfxBitDepthFloat)
+        return s2;
+      return s1;
+    }
+    else if(s1 == kOfxBitDepthFloat) {
+      return s1;
+    }
+    else {
+      return s2; // oooh this might be bad dad.
+    }
+  }
+
+}

third_party/openfx/Support/CMakeLists.txt

@@ -0,0 +1,8 @@
+set(OFX_SUPPORT_HEADER_DIR "include")
+file(GLOB_RECURSE OFX_SUPPORT_HEADER_FILES "${OFX_SUPPORT_HEADER_DIR}/*.h")
+
+add_subdirectory(Library)
+if(BUILD_EXAMPLE_PLUGINS)
+  add_subdirectory(Plugins)
+  add_subdirectory(PropTester)
+endif()

third_party/openfx/Support/LICENSE

@@ -0,0 +1,32 @@
+Software License :
+
+Copyright OpenFX and contributors to the OpenFX project.
+SPDX-License-Identifier: BSD-3-Clause
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the
+   distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

third_party/openfx/Support/Library/.gdb_history

@@ -0,0 +1,57 @@
+run  tmpPlugin.bundle
+where
+l
+q
+run tmpPlugin.bundle
+where
+l
+l
+p myBundle
+up
+p myBundle
+q
+run blah.bundle
+up
+w
+where
+ls
+w
+down
+down
+up
+l
+p myBundle
+q
+break main
+run blah
+n
+n
+p myBundle
+n
+q
+q
+l
+l
+break 17
+run
+n
+p bundleURL
+n
+p myBundle
+n
+where
+p myBundle
+up
+w
+l
+p myBundle
+q
+break main
+run
+n
+n
+p myBundle
+n
+n
+p nPluginsFunc
+q

third_party/openfx/Support/Library/CMakeLists.txt

@@ -0,0 +1,16 @@
+set(OFX_SUPPORT_LIBRARY_DIR ".")
+file(GLOB_RECURSE OFX_SUPPORT_LIBRARY_FILES "${OFX_SUPPORT_LIBRARY_DIR}/*.cpp")
+
+add_library(OfxSupport STATIC
+	${OFX_HEADER_FILES}
+	${OFX_SUPPORT_HEADER_FILES}
+	${OFX_SUPPORT_LIBRARY_FILES})
+
+set_target_properties(OfxSupport PROPERTIES LINKER_LANGUAGE CXX)
+if(NOT MSVC)
+	set_target_properties(OfxSupport PROPERTIES COMPILE_FLAGS "-fPIC")
+endif()
+
+target_include_directories(OfxSupport PUBLIC
+	${OFX_HEADER_DIR}
+	${OFX_SUPPORT_HEADER_DIR})

third_party/openfx/Support/Library/ofxSupport.dsp

@@ -0,0 +1,128 @@
+# Microsoft Developer Studio Project File - Name="ofxsupport" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=ofxsupport - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "ofxsupport.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "ofxsupport.mak" CFG="ofxsupport - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "ofxsupport - Win32 Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "ofxsupport - Win32 Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "ofxsupport - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "../include" /I "../../include" /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
+# ADD BASE RSC /l 0x809 /d "NDEBUG"
+# ADD RSC /l 0x809 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"ofxSupport.lib"
+
+!ELSEIF  "$(CFG)" == "ofxsupport - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /ZI /Od /I "../include" /I "../../include" /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
+# ADD BASE RSC /l 0x809 /d "_DEBUG"
+# ADD RSC /l 0x809 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo /out:"ofxSupport.lib"
+
+!ENDIF 
+
+# Begin Target
+
+# Name "ofxsupport - Win32 Release"
+# Name "ofxsupport - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=.\ofxsCore.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsImageEffect.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsInteract.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsLog.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsMultiThread.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsParams.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsProperty.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\ofxsPropertyValidation.cpp
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# Begin Source File
+
+SOURCE=.\ofxsSupportPrivate.h
+# End Source File
+# End Group
+# End Target
+# End Project

third_party/openfx/Support/Library/ofxsCore.cpp

@@ -0,0 +1,113 @@
+
+
+#include "ofxsSupportPrivate.h"
+#ifdef DEBUG
+#include <iostream>
+#if defined(__APPLE__) || defined(linux)
+#include <execinfo.h>
+#include <stdlib.h>
+#endif
+#endif
+
+#include "ofxsMemory.h"
+
+namespace OFX {
+  /** @brief Throws an @ref OFX::Exception depending on the status flag passed in */
+  void throwSuiteStatusException(OfxStatus stat)
+  {
+    switch (stat) 
+    {
+    case kOfxStatOK :
+    case kOfxStatReplyYes :
+    case kOfxStatReplyNo :
+    case kOfxStatReplyDefault :
+      break;
+
+    case kOfxStatErrMemory :
+      throw std::bad_alloc();
+
+    default :
+#    ifdef DEBUG
+      std::cout << "Threw suite exception!" << std::endl;
+#     if defined(__APPLE__) || defined(linux)
+      void* callstack[128];
+      int i, frames = backtrace(callstack, 128);
+      char** strs = backtrace_symbols(callstack, frames);
+      for (i = 0; i < frames; ++i) {
+          std::cout << strs[i] << std::endl;
+      }
+      free(strs);
+#     endif
+#    endif
+      throw OFX::Exception::Suite(stat);
+    }
+  }
+
+  void throwHostMissingSuiteException(std::string name)
+  {
+#  ifdef DEBUG
+    std::cout << "Threw suite exception! Host missing '" << name << "' suite." << std::endl;
+#   if defined(__APPLE__) || defined(linux)
+    void* callstack[128];
+    int i, frames = backtrace(callstack, 128);
+    char** strs = backtrace_symbols(callstack, frames);
+    for (i = 0; i < frames; ++i) {
+        std::cout << strs[i] << std::endl;
+    }
+    free(strs);
+#   endif
+#  endif
+    throw OFX::Exception::Suite(kOfxStatErrUnsupported);
+  }
+
+
+  /** @brief maps status to a string */
+  const char* mapStatusToString(OfxStatus stat)
+  {
+    switch(stat) 
+    {    
+    case kOfxStatOK             : return "kOfxStatOK";
+    case kOfxStatFailed         : return "kOfxStatFailed";
+    case kOfxStatErrFatal       : return "kOfxStatErrFatal";
+    case kOfxStatErrUnknown     : return "kOfxStatErrUnknown";
+    case kOfxStatErrMissingHostFeature : return "kOfxStatErrMissingHostFeature";
+    case kOfxStatErrUnsupported : return "kOfxStatErrUnsupported";
+    case kOfxStatErrExists      : return "kOfxStatErrExists";
+    case kOfxStatErrFormat      : return "kOfxStatErrFormat";
+    case kOfxStatErrMemory      : return "kOfxStatErrMemory";
+    case kOfxStatErrBadHandle   : return "kOfxStatErrBadHandle";
+    case kOfxStatErrBadIndex    : return "kOfxStatErrBadIndex";
+    case kOfxStatErrValue       : return "kOfxStatErrValue";
+    case kOfxStatReplyYes       : return "kOfxStatReplyYes";
+    case kOfxStatReplyNo        : return "kOfxStatReplyNo";
+    case kOfxStatReplyDefault   : return "kOfxStatReplyDefault";
+    case kOfxStatErrImageFormat : return "kOfxStatErrImageFormat";
+    }
+    return "UNKNOWN STATUS CODE";
+  }
+
+
+  /** @brief namespace for memory allocation that is done via wrapping the ofx memory suite */
+  namespace Memory {
+    /** @brief allocate n bytes, returns a pointer to it */
+    void *allocate(size_t nBytes, ImageEffect *effect)
+    {
+      void *data = 0;
+      OfxStatus stat = OFX::Private::gMemorySuite->memoryAlloc((void *)(effect ? effect->getHandle() : 0), nBytes, &data);
+      if(stat != kOfxStatOK)
+        throw std::bad_alloc();
+      return data;
+    }
+
+    /** @brief free n previously allocated memory */
+    void free(void *ptr) throw()
+    {
+      if(ptr)
+        // note we are ignore errors, this could be bad, but we don't throw on a destruction
+        OFX::Private::gMemorySuite->memoryFree(ptr);            
+    }
+
+  };
+
+}; // namespace OFX
+

third_party/openfx/Support/Library/ofxsInteract.cpp

@@ -0,0 +1,546 @@
+
+
+/** @brief This file contains code that skins the ofx interact suite (for image effects) */
+
+
+#include "ofxsSupportPrivate.h"
+#include <algorithm> // for find
+
+/** @brief The core 'OFX Support' namespace, used by plugin implementations. All code for these are defined in the common support libraries.
+*/
+namespace OFX {
+
+  /** @brief fetch a pixel scale out of the property set */
+  static OfxPointD getPixelScale(const PropertySet &props)
+  {
+    OfxPointD pixelScale;
+    pixelScale.x = props.propGetDouble(kOfxInteractPropPixelScale, 0);
+    pixelScale.y = props.propGetDouble(kOfxInteractPropPixelScale, 1);
+    return pixelScale;
+  }
+
+  /** @brief fetch a render scale out of the property set */
+  static OfxPointD getRenderScale(const PropertySet &props)
+  {
+    OfxPointD v;
+    v.x = props.propGetDouble(kOfxImageEffectPropRenderScale, 0);
+    v.y = props.propGetDouble(kOfxImageEffectPropRenderScale, 1);
+    return v;
+  }
+
+  /** @brief fetch a background colour out of the property set */
+  static OfxRGBColourD getBackgroundColour(const PropertySet &props)
+  {
+    OfxRGBColourD backGroundColour;
+    backGroundColour.r = props.propGetDouble(kOfxInteractPropBackgroundColour, 0);
+    backGroundColour.g = props.propGetDouble(kOfxInteractPropBackgroundColour, 1);
+    backGroundColour.b = props.propGetDouble(kOfxInteractPropBackgroundColour, 2);
+    return backGroundColour;
+  }
+
+  /** @brief retrieves the image effect pointer from the interact handle */
+  static ImageEffect *retrieveEffectFromInteractHandle(OfxInteractHandle handle)
+  {
+    // get the properties set on this handle
+    OfxPropertySetHandle propHandle;
+    OfxStatus stat = OFX::Private::gInteractSuite->interactGetPropertySet(handle, &propHandle);
+    throwSuiteStatusException(stat);
+    PropertySet interactProperties(propHandle);
+
+    // get the effect handle from this handle
+    OfxImageEffectHandle effectHandle = (OfxImageEffectHandle) interactProperties.propGetPointer(kOfxPropEffectInstance);
+
+    // get the effect properties 
+    return OFX::Private::retrieveImageEffectPointer(effectHandle);
+  }
+
+  /** @brief ctor */
+  Interact::Interact(OfxInteractHandle handle)
+    : _interactHandle(handle)
+    , _effect(0)
+  {
+    // get the properties set on this handle
+    OfxPropertySetHandle propHandle;
+    OfxStatus stat = OFX::Private::gInteractSuite->interactGetPropertySet(handle, &propHandle);
+    throwSuiteStatusException(stat);
+    _interactProperties.propSetHandle(propHandle);
+
+    // set othe instance data on the property handle to point to this interact
+    _interactProperties.propSetPointer(kOfxPropInstanceData, (void *)this);
+
+    // get the effect handle from this handle        
+    _effect = retrieveEffectFromInteractHandle(handle);
+  }
+
+  /** @brief ctor */
+  Interact::~Interact()
+  {
+  }
+
+  /** @brief The bitdepth of each component in the openGL frame buffer */
+  int 
+    Interact::getBitDepth(void) const
+  {
+    return _interactProperties.propGetInt(kOfxInteractPropBitDepth);
+  }
+
+  /** @brief Does the openGL frame buffer have an alpha */
+  bool
+    Interact::hasAlpha(void) const
+  {
+    return _interactProperties.propGetInt(kOfxInteractPropHasAlpha) != 0;
+  }
+
+  /** @brief Returns the size of a real screen pixel under the interact's cannonical projection */
+  OfxPointD 
+    Interact::getPixelScale(void) const
+  {
+    OfxPointD v;
+    v.x = _interactProperties.propGetDouble(kOfxInteractPropPixelScale, 0);
+    v.y = _interactProperties.propGetDouble(kOfxInteractPropPixelScale, 1);
+    return v;
+  }
+
+  /** @brief The suggested colour to draw a widget in an interact */
+  bool
+    Interact::getSuggestedColour(OfxRGBColourD &c) const
+  {
+    // OFX 1.2/1.3 specs say that the host should return kOfxStatReplyDefault if there is no suggested color
+    OfxStatus stat = OFX::Private::gPropSuite->propGetDouble(_interactProperties.propSetHandle(), kOfxInteractPropSuggestedColour, 0, &c.r);
+    if (stat != kOfxStatOK) {
+      return false; // host gave no suggestion (replied kOfxStatReplyDefault or property is unknown to host)
+    }
+    stat = OFX::Private::gPropSuite->propGetDouble(_interactProperties.propSetHandle(), kOfxInteractPropSuggestedColour, 1, &c.g);
+    if (stat != kOfxStatOK) {
+      return false; // host gave no suggestion (replied kOfxStatReplyDefault or property is unknown to host)
+    }
+    stat = OFX::Private::gPropSuite->propGetDouble(_interactProperties.propSetHandle(), kOfxInteractPropSuggestedColour, 2, &c.b);
+    if (stat != kOfxStatOK) {
+      return false; // host gave no suggestion (replied kOfxStatReplyDefault or property is unknown to host)
+    }
+    return true;
+  }
+
+  /** @brief Request a redraw */
+  void 
+    Interact::requestRedraw(void) const
+  {
+    OfxStatus stat = OFX::Private::gInteractSuite->interactRedraw(_interactHandle);
+    throwSuiteStatusException(stat);
+  }
+
+  /** @brief Swap a buffer in the case of a double bufferred interact, this is possibly a silly one */
+  void 
+    Interact::swapBuffers(void) const
+  {
+    OfxStatus stat = OFX::Private::gInteractSuite->interactSwapBuffers(_interactHandle);
+    throwSuiteStatusException(stat);
+  }
+
+  /** @brief Set a param that the interact should be redrawn on if its value changes */
+  void 
+    Interact::addParamToSlaveTo(Param *p)
+  {
+    // do we have it already ?
+    std::list<Param *>::iterator i;
+    i = std::find(_slaveParams.begin(), _slaveParams.end(), p);
+    if(i == _slaveParams.end()) {
+      // we have a new one to add in here
+      _slaveParams.push_back(p);
+
+      // and set the property
+      int n = _interactProperties.propGetDimension(kOfxInteractPropSlaveToParam);
+      _interactProperties.propSetString(kOfxInteractPropSlaveToParam, p->getName(), n);
+    }
+
+  }
+
+  /** @brief Remova a param that the interact should be redrawn on if its value changes */
+  void 
+    Interact::removeParamToSlaveTo(Param *p)
+  {
+    // do we have it already ?
+    std::list<Param *>::iterator i;
+    i = std::find(_slaveParams.begin(), _slaveParams.end(), p);
+    if(i != _slaveParams.end()) {
+      // clobber it from the list
+      _slaveParams.erase(i);
+
+      // reset the property to remove our dead one
+      _interactProperties.propReset(kOfxInteractPropSlaveToParam);
+
+      // and add them all in again
+      int n = 0;
+      for(i = _slaveParams.begin(); i != _slaveParams.end(); ++i, ++n) {
+        _interactProperties.propSetString(kOfxInteractPropSlaveToParam, (*i)->getName(), n);
+      }
+    }
+  }
+
+  /** @brief the background colour */
+  OfxRGBColourD Interact::getBackgroundColour(void) const
+  {
+    return OFX::getBackgroundColour(_interactProperties);
+  }
+
+  /** @brief the function called to draw in the interact */
+  bool 
+    Interact::draw(const DrawArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle pen motion in the interact
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::penMotion(const PenArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle pen down events in the interact 
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::penDown(const PenArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle pen up events in the interact 
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::penUp(const PenArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle key down events in the interact 
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::keyDown(const KeyArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle key up events in the interact 
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::keyUp(const KeyArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief the function called to handle key down repeat events in the interact 
+
+  returns true if the interact trapped the action in some sense. This will block the action being passed to 
+  any other interact that may share the viewer.
+  */
+  bool 
+    Interact::keyRepeat(const KeyArgs &/*args*/)
+  {
+    return false;
+  }
+
+  /** @brief Called when the interact is given input focus */
+  void 
+    Interact::gainFocus(const FocusArgs &/*args*/)
+  {
+  }
+
+  /** @brief Called when the interact is loses input focus */
+  void 
+    Interact::loseFocus(const FocusArgs &/*args*/)
+  {
+  }
+
+  ////////////////////////////////////////////////////////////////////////////////
+  // overlay interact guff
+
+  /** @brief ctor */
+  OverlayInteract::OverlayInteract(OfxInteractHandle handle)
+    : Interact(handle)
+  {
+    // add this interact into the list of overlays that the effect knows about
+    if(_effect)
+      _effect->addOverlayInteract(this);
+  }
+
+  /** @brief ctor */
+  OverlayInteract::~OverlayInteract()
+  {
+    // add this interact into the list of overlays that the effect knows about
+    if(_effect)
+      _effect->removeOverlayInteract(this);
+  }
+
+  ////////////////////////////////////////////////////////////////////////////////
+  /** @brief ctor */
+  InteractArgs::InteractArgs(const PropertySet &props)
+  {
+    time          = props.propGetDouble(kOfxPropTime);
+    renderScale   = getRenderScale(props);
+  }
+
+  /** @brief ctor */
+  DrawArgs::DrawArgs(const PropertySet &props)
+    : InteractArgs(props)
+  {
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+    viewportSize.x = props.propGetDouble(kOfxInteractPropViewportSize, 0, false);
+    viewportSize.y = props.propGetDouble(kOfxInteractPropViewportSize, 1, false);
+#endif
+    backGroundColour = getBackgroundColour(props);
+    pixelScale       = getPixelScale(props);
+  }
+
+  /** @brief ctor */
+  PenArgs::PenArgs(const PropertySet &props)
+    : InteractArgs(props)
+  {
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+    viewportSize.x = props.propGetDouble(kOfxInteractPropViewportSize, 0, false);
+    viewportSize.y = props.propGetDouble(kOfxInteractPropViewportSize, 1, false);
+#endif
+    pixelScale    = getPixelScale(props);
+    backGroundColour = getBackgroundColour(props);
+    penPosition.x = props.propGetDouble(kOfxInteractPropPenPosition, 0);
+    penPosition.y = props.propGetDouble(kOfxInteractPropPenPosition, 1);
+    try {
+      penViewportPosition.x = props.propGetInt(kOfxInteractPropPenViewportPosition, 0);
+      penViewportPosition.y = props.propGetInt(kOfxInteractPropPenViewportPosition, 1);
+    } catch (OFX::Exception::PropertyUnknownToHost&) {
+      // Introduced in OFX 1.2. Return (-1,-1) if not available
+      penViewportPosition.x = penViewportPosition.y = -1.;
+    }
+    penPressure   = props.propGetDouble(kOfxInteractPropPenPressure);
+  }
+
+  /** @brief ctor */
+  KeyArgs::KeyArgs(const PropertySet &props)
+    : InteractArgs(props)
+  {
+    time          = props.propGetDouble(kOfxPropTime);
+    renderScale   = getRenderScale(props);
+    keyString     = props.propGetString(kOfxPropKeyString);
+    keySymbol     = props.propGetInt(kOfxPropKeySym);
+  }
+
+  /** @brief ctor */
+  FocusArgs::FocusArgs(const PropertySet &props)
+    : InteractArgs(props)
+  {
+#ifdef kOfxInteractPropViewportSize // removed in OFX 1.4
+    viewportSize.x = props.propGetDouble(kOfxInteractPropViewportSize, 0, false);
+    viewportSize.y = props.propGetDouble(kOfxInteractPropViewportSize, 1, false);
+#endif
+    pixelScale       = getPixelScale(props);
+    backGroundColour = getBackgroundColour(props);
+  }
+
+
+  void ParamInteractDescriptor::setInteractSizeAspect(double asp)
+  {
+    _props->propSetDouble(kOfxParamPropInteractSizeAspect , asp);
+  }
+
+  void ParamInteractDescriptor::setInteractMinimumSize(int x, int y)
+  {
+    _props->propSetInt(kOfxParamPropInteractMinimumSize, x, 0);
+    _props->propSetInt(kOfxParamPropInteractMinimumSize, y, 1);
+  }
+
+  void ParamInteractDescriptor::setInteractPreferredSize(int x, int y)
+  {
+    _props->propSetInt(kOfxParamPropInteractPreferedSize, x, 0);
+    _props->propSetInt(kOfxParamPropInteractPreferedSize, y, 1);
+  }
+
+  ParamInteract::ParamInteract(OfxInteractHandle handle, ImageEffect* effect):Interact(handle), _effect(effect)
+  {}
+
+  OfxPointI ParamInteract::getInteractSize() const
+  {
+    OfxPointI ret;
+    ret.x =  _interactProperties.propGetInt(kOfxParamPropInteractSize, 0);
+    ret.y =  _interactProperties.propGetInt(kOfxParamPropInteractSize, 1);
+    return ret;
+  }
+
+  namespace Private {
+    /** @brief fetches our pointer out of the props on the handle */
+    static
+    Interact *retrieveInteractPointer(OfxInteractHandle handle)
+    {
+      Interact *instance;
+
+      // get the prop set on the handle
+      OfxPropertySetHandle propHandle;
+      OfxStatus stat = OFX::Private::gInteractSuite->interactGetPropertySet(handle, &propHandle);
+      throwSuiteStatusException(stat);
+
+      // make our wrapper object
+      PropertySet props(propHandle);
+
+      // fetch the instance data out of the properties
+      instance = (Interact *) props.propGetPointer(kOfxPropInstanceData);
+
+      OFX::Log::error(instance == 0, "Instance data handle in effect instance properties is NULL!");
+
+      // need to throw something here
+
+      // and dance to the music
+      return instance;
+    }
+
+    /** @brief The common entry point used by all interacts */
+    static
+    OfxStatus
+      interactMainEntry(const std::string     &action,
+      OfxInteractHandle      handle,
+      PropertySet              inArgs,
+      PropertySet              /*outArgs*/)
+    {
+      OfxStatus stat = kOfxStatReplyDefault;
+
+      // get the interact pointer
+      Interact *interact = retrieveInteractPointer(handle);
+
+      // if one was not made, return and do nothing
+      if(!interact)
+        return stat;
+
+      if(action == kOfxActionDestroyInstance) {
+        delete interact;
+        stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionDraw) {
+        // make the draw args
+        DrawArgs drawArgs(inArgs);
+        if(interact->draw(drawArgs))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionPenMotion) {
+
+        // make the draw args
+        PenArgs args(inArgs);
+        if(interact->penMotion(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionPenDown) {
+        // make the draw args
+        PenArgs args(inArgs);
+        if(interact->penDown(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionPenUp) {
+        // make the draw args
+        PenArgs args(inArgs);
+        if(interact->penUp(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionKeyDown) {
+        // make the draw args
+        KeyArgs args(inArgs);
+        if(interact->keyDown(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionKeyUp) {
+        // make the draw args
+        KeyArgs args(inArgs);
+        if(interact->keyUp(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionKeyRepeat) {
+        // make the draw args
+        KeyArgs args(inArgs);
+        if(interact->keyRepeat(args))
+          stat = kOfxStatOK;
+      }
+      else if(action ==   kOfxInteractActionGainFocus) {
+        // make the draw args
+        FocusArgs args(inArgs);
+        interact->gainFocus(args);
+      }
+      else if(action ==   kOfxInteractActionLoseFocus) {
+        // make the draw args
+        FocusArgs args(inArgs);
+        interact->loseFocus(args);
+      }
+
+      return stat;
+    }
+
+    /** @brief The main entry for image effect overlays */
+    OfxStatus interactMainEntry(const char             *actionRaw,
+      const void             *handleRaw,
+      OfxPropertySetHandle    inArgsRaw,
+      OfxPropertySetHandle    outArgsRaw,
+      InteractDescriptor& desc)
+    {
+      OFX::Log::print("********************************************************************************");
+      OFX::Log::print("START overlayInteractMainEntry (%s)", actionRaw);
+      OFX::Log::indent();
+      OfxStatus stat = kOfxStatReplyDefault;
+
+      try {
+        // Cast the raw handle to be an image effect handle, because that is what it is
+        OfxInteractHandle handle = (OfxInteractHandle) handleRaw;
+
+        // Turn the arguments into wrapper objects to make our lives easier
+        OFX::PropertySet inArgs(inArgsRaw);
+        OFX::PropertySet outArgs(outArgsRaw);
+
+        // turn the action into a std::string
+        std::string action(actionRaw);
+
+        // figure the actions
+        if (action == kOfxActionDescribe) {
+          OfxPropertySetHandle propHandle;
+          OfxStatus stat = OFX::Private::gInteractSuite->interactGetPropertySet(handle, &propHandle);
+          throwSuiteStatusException(stat);
+          PropertySet interactProperties(propHandle);
+          desc.setPropertySet(&interactProperties);
+          desc.describe();
+        }
+        else if (action == kOfxActionCreateInstance) 
+        {
+          // fetch the image effect we are being made for out of the interact's property handle
+          ImageEffect *effect = retrieveEffectFromInteractHandle(handle);
+          OFX::Interact* interact = desc.createInstance(handle, effect);
+          (void)interact;
+          // and all was well
+          stat = kOfxStatOK;
+        }
+        else {
+          stat = interactMainEntry(action, handle, inArgs, outArgs);
+        }
+
+      }
+      catch(...)
+      {
+        stat = kOfxStatFailed;
+      }
+
+      OFX::Log::outdent();
+      OFX::Log::print("STOP overlayInteractMainEntry (%s)", actionRaw);
+      return stat;
+    }
+
+  }; // end namespace private
+
+}; // end of namespace

third_party/openfx/Support/Library/ofxsLog.cpp

@@ -0,0 +1,129 @@
+
+
+/** @file This file contains the body of functions used for logging ofx problems etc...
+
+The log file is written to using printf style functions, rather than via c++ iostreams.
+
+*/
+
+#include <cassert>
+#include <cstdio>
+#include <cstdarg>
+#include <cstdlib>
+#include <string>
+
+#include "ofxsLog.h"
+
+namespace OFX {
+  namespace Log {
+
+    /** @brief log file */
+    static FILE *gLogFP = 0;
+
+    /// environment variable for the log file
+#define kLogFileEnvVar "OFX_PLUGIN_LOGFILE"
+
+    /** @brief the global logfile name */
+    static std::string gLogFileName(getenv(kLogFileEnvVar) ? getenv(kLogFileEnvVar) : "ofxPluginLog.txt");
+
+    /** @brief global indent level, not MP sane */
+    static int gIndent = 0;
+
+    /** @brief Sets the name of the log file. */
+    void setFileName(const std::string &value)
+    {
+      gLogFileName = value;
+    }
+
+    /** @brief Opens the log file, returns whether this was sucessful or not. */
+    bool open(void)
+    {
+#ifdef DEBUG
+      if(!gLogFP) {
+        gLogFP = fopen(gLogFileName.c_str(), "a");
+        return gLogFP != 0;
+      }
+#endif
+      return gLogFP != 0;
+    }
+
+    /** @brief Closes the log file. */
+    void close(void)
+    {
+      if(gLogFP) {
+        fclose(gLogFP);
+      }
+      gLogFP = 0;
+    }
+
+    /** @brief Indent it, not MP sane at the moment */
+    void indent(void)
+    {
+      ++gIndent;
+    }
+
+    /** @brief Outdent it, not MP sane at the moment */
+    void outdent(void)
+    {
+      --gIndent;
+    }
+
+    /** @brief do the indenting */
+    static void doIndent(void)
+    {
+      if(open()) {
+        for(int i = 0; i < gIndent; i++) {
+          fputs("    ", gLogFP);
+        }
+      }
+    }
+
+    /** @brief Prints to the log file. */
+    void print(const char *format, ...)
+    {
+      if(open()) {
+        doIndent();
+        va_list args;
+        va_start(args, format);
+        vfprintf(gLogFP, format, args);
+        fputc('\n', gLogFP);
+        fflush(gLogFP);
+        va_end(args);
+      }  
+    }
+
+    /** @brief Prints to the log file only if the condition is true and prepends a warning notice. */
+    void warning(bool condition, const char *format, ...)
+    {
+      if(condition && open()) {
+        doIndent();
+        fputs("WARNING : ", gLogFP);
+
+        va_list args;
+        va_start(args, format);
+        vfprintf(gLogFP, format, args);
+        fputc('\n', gLogFP);
+        va_end(args);
+
+        fflush(gLogFP);
+      }  
+    }
+
+    /** @brief Prints to the log file only if the condition is true and prepends an error notice. */
+    void error(bool condition, const char *format, ...)
+    {
+      if(condition && open()) {
+        doIndent();
+        fputs("ERROR : ", gLogFP);
+
+        va_list args;
+        va_start(args, format);
+        vfprintf(gLogFP, format, args);
+        fputc('\n', gLogFP);
+        va_end(args);
+
+        fflush(gLogFP);
+      }  
+    }
+  };
+};

third_party/openfx/Support/Library/ofxsMultiThread.cpp

@@ -0,0 +1,128 @@
+
+
+#include "ofxsSupportPrivate.h"
+
+namespace OFX {
+
+  namespace MultiThread {
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // SMP class
+
+    /** @brief ctor */
+    Processor::Processor(void)
+    {
+    }
+
+    /** @brief dtor */
+    Processor::~Processor()
+    {
+    }
+
+    /** @brief Function to pass to the multi thread suite */
+    void Processor::staticMultiThreadFunction(unsigned int threadIndex, unsigned int threadMax, void *customArg)
+    {
+      // cast the custom arg to one of me
+      Processor *me = (Processor *)  customArg;
+
+      // and call my thread function
+      me->multiThreadFunction(threadIndex, threadMax);
+    }
+
+    /** @brief Function to pass to the multi thread suite */
+    void Processor::multiThread(unsigned int nCPUs)
+    {
+      // if 0, use all the CPUs we can
+      if(nCPUs == 0)
+        nCPUs = OFX::MultiThread::getNumCPUs();
+
+      // if 1 cpu, don't bother with the threading
+      if(nCPUs == 1) {
+        multiThreadFunction(0, 1);
+      }
+      else {
+        // OK do it
+          OfxStatus stat = kOfxStatFailed;
+          if(OFX::Private::gThreadSuite){
+              stat = OFX::Private::gThreadSuite->multiThread(staticMultiThreadFunction, nCPUs, (void *)this);
+          }
+
+        // did we do it?
+        throwSuiteStatusException(stat);
+      }
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // futility functions
+
+    /** @brief Has the current thread been spawned from an MP */
+    bool isSpawnedThread(void)
+    {
+      if(OFX::Private::gThreadSuite){
+          int v = OFX::Private::gThreadSuite->multiThreadIsSpawnedThread();
+          return v != 0;
+      }else{
+          return false;
+      }
+    }
+
+    /** @brief The number of CPUs that can be used for MP-ing */
+    unsigned  int getNumCPUs(void)
+    {
+      unsigned int n = 1;
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->multiThreadNumCPUs(&n) : kOfxStatFailed;
+
+      if(stat != kOfxStatOK) n = 1;
+      return n;
+    }
+      
+    /** @brief The index of the current thread. From 0 to numCPUs() - 1 */
+    unsigned int getThreadIndex(void)
+    {
+      unsigned int n = 0;
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->multiThreadIndex(&n) : kOfxStatFailed;
+      if(stat != kOfxStatOK) n = 0;
+      return n;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // MUTEX class
+
+    /** @brief ctor */
+    Mutex::Mutex(int lockCount)
+      : _handle(0)
+    {
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->mutexCreate(&_handle, lockCount) : kOfxStatReplyDefault;
+      throwSuiteStatusException(stat);
+    }
+
+    /** @brief dtor */
+    Mutex::~Mutex(void)
+    {
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->mutexDestroy(_handle) : kOfxStatReplyDefault;
+      (void)stat;
+    }
+
+    /** @brief lock it, blocks until lock is gained */
+    void Mutex::lock()
+    {
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->mutexLock(_handle) : kOfxStatReplyDefault;
+      throwSuiteStatusException(stat);
+    }
+
+    /** @brief unlock it */
+    void Mutex::unlock()
+    {
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->mutexUnLock(_handle) : kOfxStatReplyDefault;
+      throwSuiteStatusException(stat);
+    }
+
+    /** @brief attempt to lock, non-blocking */
+    bool Mutex::tryLock()
+    {
+      OfxStatus stat = OFX::Private::gThreadSuite ? OFX::Private::gThreadSuite->mutexTryLock(_handle) : kOfxStatReplyDefault;
+      return stat == kOfxStatOK;
+    }
+
+  };
+};

third_party/openfx/Support/Library/ofxsProperty.cpp

@@ -0,0 +1,230 @@
+
+
+#include "ofxsSupportPrivate.h"
+
+using namespace OFX::Private;
+
+namespace OFX {
+
+  static
+  void throwPropertyException(OfxStatus stat,
+    const std::string &propName)
+  {
+    switch (stat) 
+    {
+    case kOfxStatOK :
+    case kOfxStatReplyYes :
+    case kOfxStatReplyNo :
+    case kOfxStatReplyDefault :
+      // Throw nothing!
+      break;
+
+    case kOfxStatErrUnknown :
+    case kOfxStatErrUnsupported : // unsupported implies unknow here
+      if(OFX::PropertySet::getThrowOnUnsupportedProperties()) // are we suppressing this?
+        throw OFX::Exception::PropertyUnknownToHost(propName.c_str());
+      break;
+
+    case kOfxStatErrMemory :
+      throw std::bad_alloc();
+      break;
+
+    case kOfxStatErrValue :
+      throw  OFX::Exception::PropertyValueIllegalToHost(propName.c_str());
+      break;
+
+    case kOfxStatErrBadHandle :
+    case kOfxStatErrBadIndex :
+    default :
+      throwSuiteStatusException(stat);
+      break;
+    }
+  }
+
+  /** @brief are we logging property get/set */
+  int PropertySet::_gPropLogging = 1;
+
+  /** @brief Do we throw an exception if a host returns 'unsupported' when setting a property */
+  bool PropertySet::_gThrowOnUnsupported = true;
+
+  /** @brief Virtual destructor */
+  PropertySet::~PropertySet() {}
+
+  /** @brief, returns the dimension of the given property from this property set */
+  int PropertySet::propGetDimension(const char* property, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    int dimension = 0;
+    OfxStatus stat = gPropSuite->propGetDimension(_propHandle, property, &dimension);
+    Log::error(stat != kOfxStatOK, "Failed on fetching dimension for property %s, host returned status %s.", property, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) 
+      Log::print("Fetched dimension of property %s, returned %d.",  property, dimension);
+
+    return dimension;
+  }
+
+  /** @brief, resets the property to it's default value */
+  void PropertySet::propReset(const char* property)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propReset(_propHandle, property);
+    Log::error(stat != kOfxStatOK, "Failed on reseting property %s to its defaults, host returned status %s.", property, mapStatusToString(stat));
+    throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Reset property %s.",  property);
+  }
+
+  /** @brief, Set a single dimension pointer property */
+  void PropertySet::propSetPointer(const char* property, void *value, int idx, bool throwOnFailure)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propSetPointer(_propHandle, property, idx, value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on setting pointer property %s[%d] to %p, host returned status %s;", 
+      property, idx, value, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property);  
+
+    if(_gPropLogging > 0) Log::print("Set pointer property %s[%d] to be %p.",  property, idx, value);
+  }
+
+  /** @brief, Set a single dimension string property */
+  void PropertySet::propSetString(const char* property, const std::string &value, int idx, bool throwOnFailure)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propSetString(_propHandle, property, idx, value.c_str());
+    OFX::Log::error(stat != kOfxStatOK, "Failed on setting string property %s[%d] to %s, host returned status %s;", 
+      property, idx, value.c_str(), mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Set string property %s[%d] to be %s.",  property, idx, value.c_str());
+  }
+
+  /** @brief, Set a single dimension double property */
+  void PropertySet::propSetDouble(const char* property, double value, int idx, bool throwOnFailure)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propSetDouble(_propHandle, property, idx, value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on setting double property %s[%d] to %lf, host returned status %s;", 
+      property, idx, value, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Set double property %s[%d] to be %lf.",  property, idx, value);
+  }
+
+  /** @brief, Set a single dimension int property */
+  void PropertySet::propSetInt(const char* property, int value, int idx, bool throwOnFailure)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propSetInt(_propHandle, property, idx, value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on setting int property %s[%d] to %d, host returned status %s (%d);", 
+      property, idx, value, mapStatusToString(stat), stat);
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Set int property %s[%d] to be %d.",  property, idx, value);
+  }
+
+  /** @brief, Set a multiple dimension double property */
+  void PropertySet::propSetDoubleN(const char* property, const double* values, int count, bool throwOnFailure)
+  {
+    assert(_propHandle != 0);
+    OfxStatus stat = gPropSuite->propSetDoubleN(_propHandle, property, count, values);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on setting double property %s[0..%d], host returned status %s;",
+      property, count-1, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Set double property %s[0..%d].",  property, count-1);
+  }
+
+  /** @brief Get single pointer property */
+  void*  PropertySet::propGetPointer(const char* property, int idx, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    void *value = 0;
+    OfxStatus stat = gPropSuite->propGetPointer(_propHandle, property, idx, &value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on getting pointer property %s[%d], host returned status %s;", 
+      property, idx, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Retrieved pointer property %s[%d], was given %p.",  property, idx, value);
+
+    return value;
+  }
+
+  /** @brief Get single string property */
+  std::string PropertySet::propGetString(const char* property, int idx, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    char *value = NULL;
+    OfxStatus stat = gPropSuite->propGetString(_propHandle, property, idx, &value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on getting string property %s[%d], host returned status %s;", 
+      property, idx, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property);
+
+    if(_gPropLogging > 0) Log::print("Retrieved string property %s[%d], was given %s.",  property, idx, value);
+    return value != NULL ?  std::string(value) : std::string();
+  }
+
+  /** @brief Get single double property */
+  double PropertySet::propGetDouble(const char* property, int idx, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    double value = 0;
+    OfxStatus stat = gPropSuite->propGetDouble(_propHandle, property, idx, &value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on getting double property %s[%d], host returned status %s;", 
+      property, idx, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Retrieved double property %s[%d], was given %lf.",  property, idx, value);
+    return value;
+  }
+
+  /** @brief Get single int property */
+  int PropertySet::propGetInt(const char* property, int idx, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    int value = 0;
+    OfxStatus stat = gPropSuite->propGetInt(_propHandle, property, idx, &value);
+    OFX::Log::error(stat != kOfxStatOK, "Failed on getting int property %s[%d], host returned status %s;", 
+      property, idx, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property); 
+
+    if(_gPropLogging > 0) Log::print("Retrieved int property %s[%d], was given %d.",  property, idx, value);
+    return value;
+  }
+    
+  std::list<std::string> PropertySet::propGetNString(const char* property, bool throwOnFailure) const
+  {
+    assert(_propHandle != 0);
+    std::list<std::string> ret;
+    int dimension = propGetDimension(property,throwOnFailure);
+    if (dimension <= 0) {
+      return ret;
+    }
+    std::vector<char*> rawValue(dimension);
+    OfxStatus stat = gPropSuite->propGetStringN(_propHandle, property, dimension, rawValue.data());
+    OFX::Log::error(stat != kOfxStatOK, "Failed on getting string property %s, host returned status %s;",
+                      property, mapStatusToString(stat));
+    if(throwOnFailure)
+      throwPropertyException(stat, property);
+      
+    if(_gPropLogging > 0) Log::print("Retrieved string property %s, was given %s.",  property,rawValue.data());
+      
+    for (int i = 0; i < dimension; ++i) {
+      ret.push_back(std::string(rawValue[i]));
+    }
+    return ret;
+
+  }
+
+};

third_party/openfx/Support/Library/ofxsSupportPrivate.h

@@ -0,0 +1,228 @@
+
+
+#ifndef _ofxsSupportPrivate_H_
+#define _ofxsSupportPrivate_H_
+
+#include "ofxsInteract.h"
+#include "ofxsImageEffect.h"
+#include "ofxsLog.h"
+#include "ofxsMultiThread.h"
+
+/** @brief Namespace private to the ofx support library.
+*/
+namespace OFX {
+
+  namespace Private {
+    /** @brief Pointer to the host */
+    extern OfxHost *gHost;
+
+    /** @brief Pointer to the effect suite */
+    extern OfxImageEffectSuiteV1 *gEffectSuite;
+
+    /** @brief Pointer to the property suite */
+    extern OfxPropertySuiteV1    *gPropSuite;
+
+    /** @brief Pointer to the  interact suite */
+    extern OfxInteractSuiteV1    *gInteractSuite;
+
+    /** @brief Pointer to the parameter suite */
+    extern OfxParameterSuiteV1   *gParamSuite;
+
+    /** @brief Pointer to the general memory suite */
+    extern OfxMemorySuiteV1      *gMemorySuite;
+
+    /** @brief Pointer to the threading suite */
+    extern OfxMultiThreadSuiteV1 *gThreadSuite;
+
+    /** @brief Pointer to the message suite */
+    extern OfxMessageSuiteV1     *gMessageSuite;
+
+    /** @brief Pointer to the optional message suite V2 */
+    extern OfxMessageSuiteV2     *gMessageSuiteV2;
+
+    /** @brief Pointer to the optional progress suite */
+    extern OfxProgressSuiteV1     *gProgressSuiteV1;
+
+    /** @brief Pointer to the optional progress suite */
+    extern OfxProgressSuiteV2     *gProgressSuiteV2;
+
+    /** @brief Pointer to the optional timeline suite */
+    extern OfxTimeLineSuiteV1     *gTimeLineSuite;
+
+    /** @brief Pointer to the parametric parameter suite */
+    extern OfxParametricParameterSuiteV1* gParametricParameterSuite;
+
+    /** @brief Support lib function called on an ofx load action */
+    void loadAction(void);
+
+    /** @brief Support lib function called on an ofx unload action */
+    void unloadAction(void);
+
+    /** @brief The plugin function that gets passed the host structure. 
+    */
+    void setHost(OfxHost *host);
+
+    /** @brief fetches our pointer out of the props on the handle */
+    ImageEffect *retrieveImageEffectPointer(OfxImageEffectHandle handle);
+
+    /** @brief fetch the prop set from the effect handle */
+    OFX::PropertySet
+      fetchEffectProps(OfxImageEffectHandle handle);
+
+    /** @brief the set of descriptors, one per context used by kOfxActionDescribeInContext,  'eContextNone' is the one used by the kOfxActionDescribe */
+    typedef std::map<ContextEnum, ImageEffectDescriptor*> EffectContextMap;
+    typedef std::map<std::string, EffectContextMap> EffectDescriptorMap;
+    extern EffectDescriptorMap gEffectDescriptors;
+  };
+
+  /** @brief The validation code has its own namespace */
+  namespace Validation {
+
+    /** @brief This is uses to hold a property value, used by the property checking classes.
+
+    Could have been a union, but std::string can't be in one.
+    */
+    struct ValueHolder {
+      std::string  vString;
+      int    vInt;
+      double vDouble;
+      void  *vPointer;
+
+      ValueHolder(void) : vString(), vInt(0), vDouble(0.), vPointer(0) {}
+      ValueHolder(char  *s) : vString(s), vInt(0), vDouble(0.), vPointer(0) {}
+      ValueHolder(const std::string &s) : vString(s), vInt(0), vDouble(0.), vPointer(0) {}
+      ValueHolder(int    i) : vString(), vInt(i), vDouble(0.), vPointer(0) {}
+      ValueHolder(double d) : vString(), vInt(0), vDouble(d), vPointer(0) {}
+      ValueHolder(void  *p) : vString(), vInt(0), vDouble(0.), vPointer(p) {}
+
+      ValueHolder &operator = (char *v)  {vString = v; return *this;}
+      ValueHolder &operator = (std::string v)  {vString = v; return *this;}
+      ValueHolder &operator = (void *v)  {vPointer = v; return *this;}
+      ValueHolder &operator = (int v)    {vInt = v; return *this;}
+      ValueHolder &operator = (double v) {vDouble = v; return *this;}
+
+      operator const char * () {return vString.c_str();}
+      operator std::string &() {return vString;}
+      operator int    &() {return vInt;}
+      operator double &() {return vDouble;}
+      operator void * &() {return vPointer;}
+    };
+
+    /** @brief Enum used in the varargs list of the PropertyDescription constructor  */
+    enum DescriptionTag {
+      eDescDefault,  /** @brief following values are the default to check against */
+      eDescFinished  /** @brief we have finished the description */
+    };
+
+    /** @brief  class to describe properties, check their default and set their values */
+    class PropertyDescription
+    {
+    public :
+      /** @brief name of the property */
+      const std::string _name;
+
+      /** @brief Was it validated */
+      bool _exists;
+
+      /** @brief dimension of the property */
+      int      _dimension;
+
+      /** @brief What type of property is it */
+      OFX::PropertyTypeEnum _ilk;
+
+      /** @brief The default value that this property should have. Empty implies no default (eg: a host name has no default). */
+      std::vector<ValueHolder> _defaultValue; 
+
+    public :
+      /** @brief var args constructor that is use to describe properties */
+      PropertyDescription(const char *name, OFX::PropertyTypeEnum ilk, int dimension, ...);
+
+      /** @brief Die! Die! Die! */
+      virtual ~PropertyDescription(void) {}
+
+      /** @brief See if the property exists in the containing property set and has the correct dimension */
+      void validate(bool checkDefaults, PropertySet &propSet);
+    };
+
+    /** @brief Describes a set of properties */
+    class PropertySetDescription {
+    protected :
+      /** @brief name of the property set */
+      const std::string           _setName;
+
+      /** @brief the descriptions of each property */
+      std::vector<PropertyDescription *> _descriptions;
+
+      /** @brief The descriptions of each property */
+      std::vector<PropertyDescription *> _deleteThese;
+
+    public :
+      /** @brief constructor. 
+
+      The varargs zero terminated are made from pairs of PropertyDescription * and ints indicating the number of properties pointed to.
+      These are to come from static arrays and need not be deleted
+      */
+      PropertySetDescription(const char *setName, ...);// [PropertyDescription *v, int nSetToThese]
+
+      /** @brief destructor */
+      virtual ~PropertySetDescription();
+
+      /** @brief add another property in */
+      void addProperty(PropertyDescription *desc, bool deleteOnDestruction = true);
+
+      /** @brief See if all properties exist and have the correct dimensions */
+      void validate(PropertySet &propSet, bool checkDefaults = true, bool logOrdinaryMessages = false); 
+    };
+
+
+    /** @brief Validates the host structure and property handle */
+    void
+      validateHostProperties(OfxHost *host);
+
+    /** @brief Validates the effect descriptor properties */
+    void
+      validatePluginDescriptorProperties(PropertySet props);
+
+    /** @brief Validates the effect instance properties */
+    void
+      validatePluginInstanceProperties(PropertySet props);
+
+    /** @brief validates a clip descriptor */
+    void
+      validateClipDescriptorProperties(PropertySet props);
+
+    /** @brief validates a clip instance */
+    void
+      validateClipInstanceProperties(PropertySet props);
+
+    /** @brief validates an image or texture instance */
+    void
+      validateImageBaseProperties(PropertySet props);
+
+    /** @brief validates an image instance */
+    void
+      validateImageProperties(PropertySet props);
+
+#ifdef OFX_SUPPORTS_OPENGLRENDER
+    /** @brief validates an OpenGL texture descriptor */
+    void
+      validateTextureProperties(PropertySet props);
+#endif
+
+    /** @brief Validates action in/out arguments */
+    void
+      validateActionArgumentsProperties(const std::string &action, PropertySet inArgs, PropertySet outArgs);
+
+    /** @brief Validates parameter properties */
+    void
+      validateParameterProperties(ParamTypeEnum paramType, 
+      OFX::PropertySet paramProps,
+      bool checkDefaults);
+
+    /** @brief initialises the validation code, call this in on load */
+    void initialise(void);
+  };
+
+};
+
+#endif

third_party/openfx/Support/Library/ofxsupport.dsw

@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "ofxsupport"=.\ofxsupport.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+

third_party/openfx/Support/Library/ofxsupport.vcproj

@@ -0,0 +1,695 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="ofxsupport"
+	ProjectGUID="{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}"
+	RootNamespace="ofxsupport"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../include,../../include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"
+				MinimalRebuild="false"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/ofxsupport.pch"
+				AssemblerListingLocation="$(IntDir)\"
+				ObjectFile="$(IntDir)\"
+				ProgramDataBaseFileName="$(IntDir)\"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+				OutputFile="$(OutDir)\ofxSupport.lib"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/ofxsupport.bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../include,../../include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
+				StringPooling="true"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/ofxsupport.pch"
+				AssemblerListingLocation="$(IntDir)\"
+				ObjectFile="$(IntDir)\"
+				ProgramDataBaseFileName="$(IntDir)\"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+				OutputFile="$(OutDir)\ofxSupport.lib"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/ofxsupport.bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../include,../../include"
+				PreprocessorDefinitions="WIN64;_DEBUG;_LIB"
+				MinimalRebuild="false"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/ofxsupport.pch"
+				AssemblerListingLocation="$(IntDir)\"
+				ObjectFile="$(IntDir)\"
+				ProgramDataBaseFileName="$(IntDir)\"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+				OutputFile="$(OutDir)\ofxSupport.lib"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/ofxsupport.bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				TargetEnvironment="3"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../include,../../include"
+				PreprocessorDefinitions="WIN64;NDEBUG;_LIB"
+				StringPooling="true"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/ofxsupport.pch"
+				AssemblerListingLocation="$(IntDir)\"
+				ObjectFile="$(IntDir)\"
+				ProgramDataBaseFileName="$(IntDir)\"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+				OutputFile="$(OutDir)\ofxSupport.lib"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/ofxsupport.bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+			>
+			<File
+				RelativePath="ofxsCore.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsImageEffect.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsInteract.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsLog.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsMultiThread.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsParams.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsProperty.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="ofxsPropertyValidation.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl"
+			>
+			<File
+				RelativePath="..\include\ofxscore.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsImageEffect.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsInteract.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsLog.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsMemory.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsMessage.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsMultiThread.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\ofxsParam.h"
+				>
+			</File>
+			<File
+				RelativePath="ofxsSupportPrivate.h"
+				>
+			</File>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

third_party/openfx/Support/OSXStaticLoader/pluginLoader.cpp

@@ -0,0 +1,74 @@
+
+
+#include "ofxCore.h"
+#include "CoreFoundation/CoreFoundation.h"
+
+
+
+typedef OfxPlugin *(OfxGetPluginFunc)(int nth);
+typedef int (OfxGetNumberOfPluginsFunc)(void);
+
+int 
+main(int argc, char *argv[])
+{
+  CFURLRef bundleURL;
+  CFBundleRef myBundle;
+
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s <plugin>\n", argv[0]);
+    exit(1);
+  }
+  CFStringRef bundlePath = CFStringCreateWithCString(kCFAllocatorDefault,
+						     argv[1],
+						     kCFStringEncodingASCII);
+
+  // Make a CFURLRef from the CFString representation of the 
+  // bundle's path.
+  bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, 
+					    bundlePath,
+					    kCFURLPOSIXPathStyle,
+					    true );
+
+  // Make a bundle instance using the URLRef.
+  myBundle = CFBundleCreate( kCFAllocatorDefault, bundleURL );
+
+  if(myBundle) {
+    // Value returned from the loaded function.
+    //long result;
+  
+    OfxGetNumberOfPluginsFunc *nPluginsFunc = (OfxGetNumberOfPluginsFunc *)CFBundleGetFunctionPointerForName(myBundle, CFSTR("OfxGetNumberOfPlugins") );
+    OfxGetPluginFunc *getPlugin = (OfxGetPluginFunc *)CFBundleGetFunctionPointerForName(myBundle, CFSTR("OfxGetPlugin") );
+
+    // If the function was found, call it with a test value. 
+    if (nPluginsFunc && getPlugin) {
+      // This should add 1 to whatever was passed in
+      int nP =  nPluginsFunc();
+
+
+      printf("Sucessfully loaded '%s', containing %d %s\n", argv[1], nP, (nP == 1 ? "plugin" : "plugins"));    
+
+      for(int i = 0; i < nP; i++) {
+	// get a plugin
+	OfxPlugin *plugin = getPlugin(i); 
+	if(plugin) {
+	  printf("\tFound plugin...\n\t\tAPI = %s (%d)\n\t\tid = %s (%d.%d)\n",
+		 plugin->pluginApi, plugin->apiVersion,
+		 plugin->pluginIdentifier, plugin->pluginVersionMajor, plugin->pluginVersionMinor);
+
+	  plugin->mainEntry(kOfxActionLoad, NULL, NULL, NULL);
+	  plugin->mainEntry(kOfxActionUnload, NULL, NULL, NULL);
+	}
+	else
+	  fprintf(stderr, "fetching %dth plugin returned NULL\n", i);
+      }
+    }
+    else
+      fprintf(stderr, "Failed to find symbols OfxGetPlugin or OfxGetNumberOfPlugins\n");
+  }
+  else
+    fprintf(stderr, "Failed to load bundle %s\n", argv[1]);
+
+  // Any CF objects returned from functions with "create" or 
+  // "copy" in their names must be released by us!
+  CFRelease( bundleURL );
+}

third_party/openfx/Support/Plugins/Basic/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>basic.ofx</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1d1</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

third_party/openfx/Support/Plugins/Basic/basic.cpp

@@ -0,0 +1,727 @@
+
+
+#ifdef _WINDOWS
+#include <windows.h>
+#endif
+
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#else
+#include <GL/gl.h>
+#endif
+
+#include <stdio.h>
+#include "ofxsImageEffect.h"
+#include "ofxsMultiThread.h"
+
+#include "../include/ofxsProcessing.H"
+
+////////////////////////////////////////////////////////////////////////////////
+// a dumb interact that just draw's a square you can drag
+static const OfxPointD kBoxSize = {20, 20};
+
+class BasicInteract : public OFX::OverlayInteract {
+protected :
+  enum StateEnum {
+    eInActive,
+    ePoised,
+    ePicked
+  };
+
+  OfxPointD _position;
+  StateEnum _state;
+
+public :
+  BasicInteract(OfxInteractHandle handle, OFX::ImageEffect* /*effect*/)
+    : OFX::OverlayInteract(handle)
+    , _state(eInActive)
+  {
+    _position.x = 0;
+    _position.y = 0;
+  }
+
+  // overridden functions from OFX::Interact to do things
+  virtual bool draw(const OFX::DrawArgs &args);
+  virtual bool penMotion(const OFX::PenArgs &args);
+  virtual bool penDown(const OFX::PenArgs &args);
+  virtual bool penUp(const OFX::PenArgs &args);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// rendering routines
+template <class T> inline T
+Minimum(T a, T b) {    return (a < b) ? a : b;}
+
+template <class T> inline T
+Absolute(T a) { return (a < 0) ? -a : a;}
+
+template <class T> inline T 
+Clamp(T v, int min, int max)
+{
+  if(v < T(min)) return T(min);
+  if(v > T(max)) return T(max);
+  return v;
+}
+
+// Base class for the RGBA and the Alpha processor
+class ImageScalerBase : public OFX::ImageProcessor {
+protected :
+  OFX::Image *_srcImg;
+  OFX::Image *_maskImg;
+  double _rScale, _gScale, _bScale, _aScale;
+  bool   _doMasking;
+
+public :
+  /** @brief no arg ctor */
+  ImageScalerBase(OFX::ImageEffect &instance)
+    : OFX::ImageProcessor(instance)
+    , _srcImg(0)
+    , _maskImg(0)
+    , _rScale(1)
+    , _gScale(1)
+    , _bScale(1)
+    , _aScale(1)
+    , _doMasking(false)
+  {        
+  }
+
+  /** @brief set the src image */
+  void setSrcImg(OFX::Image *v) {_srcImg = v;}
+
+  /** @brief set the optional mask image */
+  void setMaskImg(OFX::Image *v) {_maskImg = v;}
+
+  // Are we masking. We can't derive this from the mask image being set as NULL is a valid value for an input image
+  void doMasking(bool v) {_doMasking = v;}
+
+
+  /** @brief set the scale */
+  void setScales(float r, float g, float b, float a)
+  {
+    _rScale = r;
+    _gScale = g;
+    _bScale = b;
+    _aScale = a;
+  }
+
+};
+
+// template to do the RGBA processing
+template <class PIX, int nComponents, int max>
+class ImageScaler : public ImageScalerBase {
+public :
+  // ctor
+  ImageScaler(OFX::ImageEffect &instance) 
+    : ImageScalerBase(instance)
+  {}
+
+  // and do some processing
+  void multiThreadProcessImages(OfxRectI procWindow)
+  {
+    float scales[4];
+    scales[0] = nComponents == 1 ? (float)_aScale : (float)_rScale;
+    scales[1] = (float)_gScale;
+    scales[2] = (float)_bScale;
+    scales[3] = (float)_aScale;
+
+    float maskScale = 1.0f;
+
+    for(int y = procWindow.y1; y < procWindow.y2; y++) {
+      if(_effect.abort()) break;
+
+      PIX *dstPix = (PIX *) _dstImg->getPixelAddress(procWindow.x1, y);
+
+      for(int x = procWindow.x1; x < procWindow.x2; x++) {
+
+        PIX *srcPix = (PIX *)  (_srcImg ? _srcImg->getPixelAddress(x, y) : 0);
+
+        // are we doing masking
+        if(_doMasking) {
+          // we do, get the pixel from the mask
+          if(!_maskImg)
+            maskScale = 1.0f;
+          else
+          {
+            PIX *maskPix = (PIX *)  (_maskImg ? _maskImg->getPixelAddress(x, y) : 0);
+            // figure the scale factor from that pixel
+            maskScale = maskPix != 0 ? float(*maskPix)/float(max) : 0.0f;
+          }
+        }
+
+        // do we have a source image to scale up
+        if(srcPix) {
+          for(int c = 0; c < nComponents; c++) {
+            float v;
+
+            // scale the component up by the scale factor, modulated by the maskScale
+            if(maskScale != 1.0f) 
+              v = srcPix[c] * (1.0f + (scales[c] - 1.0f) * maskScale);
+            else
+              v = srcPix[c] * scales[c];
+
+            if(max == 1)  // implies floating point and so no clamping
+              dstPix[c] = PIX(v);
+            else  // integer based and we need to clamp
+              dstPix[c] = PIX(Clamp(v, 0, max));
+          }
+        }
+        else {
+          // no src pixel here, be black and transparent
+          for(int c = 0; c < nComponents; c++) {
+            dstPix[c] = 0;
+          }
+        }
+        // increment the dst pixel
+        dstPix += nComponents;
+      }
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief The plugin that does our work */
+class BasicPlugin : public OFX::ImageEffect {
+protected :
+  // do not need to delete these, the ImageEffect is managing them for us
+  OFX::Clip *dstClip_;
+  OFX::Clip *srcClip_;
+  OFX::Clip *maskClip_;
+
+  OFX::DoubleParam  *scale_;
+  OFX::DoubleParam  *rScale_;
+  OFX::DoubleParam  *gScale_;
+  OFX::DoubleParam  *bScale_;
+  OFX::DoubleParam  *aScale_;
+  OFX::BooleanParam *componentScalesEnabled_;
+
+public :
+  /** @brief ctor */
+  BasicPlugin(OfxImageEffectHandle handle)
+    : ImageEffect(handle)
+    , dstClip_(0)
+    , srcClip_(0)
+    , scale_(0)
+    , rScale_(0)
+    , gScale_(0)
+    , bScale_(0)
+    , aScale_(0)
+    , componentScalesEnabled_(0)
+  {
+    dstClip_ = fetchClip(kOfxImageEffectOutputClipName);
+    srcClip_ = fetchClip(kOfxImageEffectSimpleSourceClipName);
+    // name of mask clip depends on the context
+    maskClip_ = getContext() == OFX::eContextFilter ? NULL : fetchClip(getContext() == OFX::eContextPaint ? "Brush" : "Mask");
+    scale_   = fetchDoubleParam("scale");
+    rScale_  = fetchDoubleParam("scaleR");
+    gScale_  = fetchDoubleParam("scaleG");
+    bScale_  = fetchDoubleParam("scaleB");
+    aScale_  = fetchDoubleParam("scaleA");
+    componentScalesEnabled_ = fetchBooleanParam("scaleComponents");
+
+    // set the enabledness of our RGBA sliders
+    setEnabledness();
+  }
+
+  /* sets the enabledness of the component scale params depending on the type of input image and the state of the scaleComponents param */
+  void setEnabledness(void);
+
+  /* Override the render */
+  virtual void render(const OFX::RenderArguments &args);
+
+  /* override is identity */
+  virtual bool isIdentity(const OFX::IsIdentityArguments &args, OFX::Clip * &identityClip, double &identityTime);
+
+  /* override changedParam */
+  virtual void changedParam(const OFX::InstanceChangedArgs &args, const std::string &paramName);
+
+  /* override changed clip */
+  virtual void changedClip(const OFX::InstanceChangedArgs &args, const std::string &clipName);
+
+  // override the rod call
+  virtual bool getRegionOfDefinition(const OFX::RegionOfDefinitionArguments &args, OfxRectD &rod);
+
+  // override the roi call
+  virtual void getRegionsOfInterest(const OFX::RegionsOfInterestArguments &args, OFX::RegionOfInterestSetter &rois);
+
+  /* set up and run a processor */
+  void
+    setupAndProcess(ImageScalerBase &, const OFX::RenderArguments &args);
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief render for the filter */
+
+////////////////////////////////////////////////////////////////////////////////
+// basic plugin render function, just a skelington to instantiate templates from
+
+
+/* set up and run a processor */
+void
+BasicPlugin::setupAndProcess(ImageScalerBase &processor, const OFX::RenderArguments &args)
+{
+  // get a dst image
+  std::unique_ptr<OFX::Image> dst(dstClip_->fetchImage(args.time));
+  OFX::BitDepthEnum dstBitDepth       = dst->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dst->getPixelComponents();
+
+  // fetch main input image
+  std::unique_ptr<OFX::Image> src(srcClip_->fetchImage(args.time));
+
+  // make sure bit depths are sane
+  if(src.get()) {
+    OFX::BitDepthEnum    srcBitDepth      = src->getPixelDepth();
+    OFX::PixelComponentEnum srcComponents = src->getPixelComponents();
+
+    // see if they have the same depths and bytes and all
+    if(srcBitDepth != dstBitDepth || srcComponents != dstComponents)
+      throw int(1); // HACK!! need to throw an sensible exception here!
+  }
+
+  std::unique_ptr<OFX::Image> mask;
+
+  // do we do masking
+  if(getContext() != OFX::eContextFilter) {
+    mask.reset(maskClip_->fetchImage(args.time));
+    // say we are masking
+    processor.doMasking(true);
+
+    // Set it in the processor 
+    processor.setMaskImg(mask.get());
+  }
+
+  // get the scale parameter values...
+  double r, g, b, a = aScale_->getValueAtTime(args.time);
+  r = g = b = scale_->getValueAtTime(args.time);
+
+  // see if the individual component scales are enabled
+  if(componentScalesEnabled_->getValueAtTime(args.time)) {
+    r *= rScale_->getValueAtTime(args.time);
+    g *= gScale_->getValueAtTime(args.time);
+    b *= bScale_->getValueAtTime(args.time);
+  }
+
+  // set the images
+  processor.setDstImg(dst.get());
+  processor.setSrcImg(src.get());
+
+
+  // set the render window
+  processor.setRenderWindow(args.renderWindow);
+
+  // set the scales
+  processor.setScales((float)r, (float)g, (float)b, (float)a);
+
+  // Call the base class process member, this will call the derived templated process code
+  processor.process();
+}
+
+// override the rod call
+bool
+BasicPlugin::getRegionOfDefinition(const OFX::RegionOfDefinitionArguments &args, OfxRectD &rod)
+{
+  // our RoD is the same as the 'Source' clip's, we are not interested in the mask
+  rod = srcClip_->getRegionOfDefinition(args.time);
+
+  // say we set it
+  return true;
+}
+
+// override the roi call
+void 
+BasicPlugin::getRegionsOfInterest(const OFX::RegionsOfInterestArguments &args, OFX::RegionOfInterestSetter &rois)
+{
+  // we don't actually need to do this as this is the default, but do it for examples sake
+  rois.setRegionOfInterest(*srcClip_, args.regionOfInterest);
+
+  // set it on the mask only if we are in an interesting context
+  if(getContext() != OFX::eContextFilter)
+    rois.setRegionOfInterest(*maskClip_, args.regionOfInterest);
+}
+
+// the overridden render function
+void
+BasicPlugin::render(const OFX::RenderArguments &args)
+{
+  // instantiate the render code based on the pixel depth of the dst clip
+  OFX::BitDepthEnum       dstBitDepth    = dstClip_->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dstClip_->getPixelComponents();
+
+  // do the rendering
+  if(dstComponents == OFX::ePixelComponentRGBA) {
+    switch(dstBitDepth) {
+case OFX::eBitDepthUByte : {      
+  ImageScaler<unsigned char, 4, 255> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+
+case OFX::eBitDepthUShort : {
+  ImageScaler<unsigned short, 4, 65535> fred(*this);
+  setupAndProcess(fred, args);
+                            }                          
+                            break;
+
+case OFX::eBitDepthFloat : {
+  ImageScaler<float, 4, 1> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+default :
+  OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  }
+  else {
+    switch(dstBitDepth) {
+case OFX::eBitDepthUByte : {
+  ImageScaler<unsigned char, 1, 255> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+
+case OFX::eBitDepthUShort : {
+  ImageScaler<unsigned short, 1, 65535> fred(*this);
+  setupAndProcess(fred, args);
+                            }                          
+                            break;
+
+case OFX::eBitDepthFloat : {
+  ImageScaler<float, 1, 1> fred(*this);
+  setupAndProcess(fred, args);
+                           }                          
+                           break;
+default :
+  OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  } 
+}
+
+// overridden is identity
+bool
+BasicPlugin:: isIdentity(const OFX::IsIdentityArguments &args, OFX::Clip * &identityClip, double &identityTime)
+{
+  // get the scale parameters
+  double scale = scale_->getValueAtTime(args.time);
+  double rScale = 1, gScale = 1, bScale = 1, aScale = 1;
+  if(componentScalesEnabled_->getValueAtTime(args.time)) {
+    rScale = rScale_->getValueAtTime(args.time);
+    gScale = gScale_->getValueAtTime(args.time);
+    bScale = bScale_->getValueAtTime(args.time);
+    aScale = aScale_->getValueAtTime(args.time);
+  }
+  rScale *= scale; gScale *= scale; bScale *= scale;
+
+  // do we do any scaling ?
+  if(rScale == 1 && gScale == 1 && bScale == 1 && aScale == 1) {
+    identityClip = srcClip_;
+    identityTime = args.time;
+    return true;
+  }
+
+  // nope, idenity we is
+  return false;
+}
+
+// set the enabledness of the individual component scales
+void
+BasicPlugin::setEnabledness(void)
+{
+  // the componet enabledness depends on the clip being RGBA and the param being true
+  bool v = componentScalesEnabled_->getValue() && srcClip_->getPixelComponents() == OFX::ePixelComponentRGBA;
+
+  // enable them
+  rScale_->setEnabled(v);
+  gScale_->setEnabled(v);
+  bScale_->setEnabled(v);
+  aScale_->setEnabled(v);
+}
+
+// we have changed a param
+void
+BasicPlugin::changedParam(const OFX::InstanceChangedArgs &/*args*/, const std::string &paramName)
+{
+  if(paramName == "scaleComponents")  setEnabledness(); 
+}
+
+// we have changed a param
+void
+BasicPlugin::changedClip(const OFX::InstanceChangedArgs &/*args*/, const std::string &clipName)
+{
+  if(clipName == kOfxImageEffectSimpleSourceClipName)  setEnabledness();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// stuff for the interact 
+
+// draw the interact
+bool BasicInteract::draw(const OFX::DrawArgs &args)
+{
+  OfxRGBColourF col;
+  switch(_state) 
+  {
+  case eInActive : col.r = col.g = col.b = 0.0f; break;
+  case ePoised   : col.r = col.g = col.b = 0.5f; break;
+  case ePicked   : col.r = col.g = col.b = 1.0f; break;
+  }
+
+  // make the box a constant size on screen by scaling by the pixel scale
+  float dx = (float)(kBoxSize.x * args.pixelScale.x);
+  float dy = (float)(kBoxSize.y * args.pixelScale.y);
+
+  // Draw a cross hair, the current coordinate system aligns with the image plane.
+  glPushMatrix();
+
+  // draw the bo
+  glColor3f(col.r, col.g, col.b);
+  glTranslated(_position.x, _position.y, 0);
+  glBegin(GL_POLYGON);
+  glVertex2f(-dx, -dy);
+  glVertex2f(-dx,  dy);
+  glVertex2f( dx,  dy);
+  glVertex2f( dx, -dy);
+  glEnd();
+  glPopMatrix();
+
+  glPushMatrix();
+  // draw a complementary outline
+  glColor3f(1.0f - col.r, 1.0f - col.g, 1.0f - col.b);
+  glTranslated(_position.x, _position.y, 0);
+  glBegin(GL_LINE_LOOP);
+  glVertex2f(-dx, -dy);
+  glVertex2f(-dx,  dy);
+  glVertex2f( dx,  dy);
+  glVertex2f( dx, -dy);
+  glEnd();
+  glPopMatrix();
+
+  return true;
+}
+
+// overridden functions from OFX::Interact to do things
+bool 
+BasicInteract::penMotion(const OFX::PenArgs &args)
+{
+  // figure the size of the box in cannonical coords
+  float dx = (float)(kBoxSize.x * args.pixelScale.x);
+  float dy = (float)(kBoxSize.y * args.pixelScale.y);
+
+  // pen position is in cannonical coords
+  OfxPointD penPos = args.penPosition;
+
+  switch(_state) {
+case eInActive : 
+case ePoised   : 
+  {
+    // are we in the box, become 'poised'
+    StateEnum newState;
+    penPos.x -= _position.x;
+    penPos.y -= _position.y;
+    if(Absolute(penPos.x) < dx &&
+      Absolute(penPos.y) < dy) {
+        newState = ePoised;
+    }
+    else {
+      newState = eInActive;
+    }
+
+    if(_state != newState) {
+      // we have a new state
+      _state = newState;
+
+      // and force an overlay redraw
+      _effect->redrawOverlays();
+    }
+  }
+  break;
+
+case ePicked   : 
+  {
+    // move our position
+    _position = penPos;
+
+    // and force an overlay redraw
+    _effect->redrawOverlays();
+  }
+  break;
+  }
+
+  // we have trapped it only if the mouse ain't over it or we are actively dragging
+  return _state != eInActive;
+}
+
+bool 
+BasicInteract::penDown(const OFX::PenArgs &args)
+{
+  // this will refigure the state
+  penMotion(args);
+
+  // if poised means we were over it when the pen went down, so pick it
+  if(_state == ePoised) {
+    // we are now picked
+    _state = ePicked;
+
+    // move our position
+    _position = args.penPosition;
+
+    // and request a redraw just incase
+    _effect->redrawOverlays();
+  }
+
+  return _state == ePicked;
+}
+
+bool 
+BasicInteract::penUp(const OFX::PenArgs &args)
+{
+  if(_state == ePicked) {
+    // reset to poised for a moment
+    _state = ePoised;
+
+    // this will refigure the state
+    penMotion(args);
+
+    // and redraw for good measure
+    _effect->redrawOverlays();
+
+    // we did trap it
+    return true;
+  }
+
+  // we didn't trap it
+  return false;
+}
+
+
+using namespace OFX;
+
+mDeclarePluginFactory(BasicExamplePluginFactory, {}, {});
+
+class BasicExampleOverlayDescriptor : public DefaultEffectOverlayDescriptor<BasicExampleOverlayDescriptor, BasicInteract> {};
+
+void BasicExamplePluginFactory::describe(OFX::ImageEffectDescriptor& desc)
+{
+  // basic labels
+  desc.setLabels("Gain", "Gain", "Gain");
+  desc.setPluginGrouping("OFX Example (Support)");
+
+  // add the supported contexts, only filter at the moment
+  desc.addSupportedContext(eContextFilter);
+  desc.addSupportedContext(eContextGeneral);
+  desc.addSupportedContext(eContextPaint);
+
+  // add supported pixel depths
+  desc.addSupportedBitDepth(eBitDepthUByte);
+  desc.addSupportedBitDepth(eBitDepthUShort);
+  desc.addSupportedBitDepth(eBitDepthFloat);
+
+  // set a few flags
+  desc.setSingleInstance(false);
+  desc.setHostFrameThreading(false);
+  desc.setSupportsMultiResolution(true);
+  desc.setSupportsTiles(true);
+  desc.setTemporalClipAccess(false);
+  desc.setRenderTwiceAlways(false);
+  desc.setSupportsMultipleClipPARs(false);
+
+  desc.setOverlayInteractDescriptor( new BasicExampleOverlayDescriptor);
+}
+
+// make a double scale param
+static
+DoubleParamDescriptor *defineScaleParam(OFX::ImageEffectDescriptor &desc,
+                                        const std::string &name, const std::string &label, const std::string &hint,
+                                        GroupParamDescriptor *parent)
+{
+  DoubleParamDescriptor *param = desc.defineDoubleParam(name);
+  param->setLabels(label, label, label);
+  param->setScriptName(name);
+  param->setHint(hint);
+  param->setDefault(1);
+  param->setRange(0, 10);
+  param->setIncrement(0.1);
+  param->setDisplayRange(0, 10);
+  param->setDoubleType(eDoubleTypeScale);
+  if(parent) param->setParent(*parent);
+  return param;
+}
+
+
+void BasicExamplePluginFactory::describeInContext(OFX::ImageEffectDescriptor& desc, OFX::ContextEnum context)
+{
+  // Source clip only in the filter context
+  // create the mandated source clip
+  ClipDescriptor *srcClip = desc.defineClip(kOfxImageEffectSimpleSourceClipName);
+  srcClip->addSupportedComponent(ePixelComponentRGBA);
+  srcClip->addSupportedComponent(ePixelComponentAlpha);
+  srcClip->setTemporalClipAccess(false);
+  srcClip->setSupportsTiles(true);
+  srcClip->setIsMask(false);
+
+  // if general or paint context, define the mask clip
+  if(context == eContextGeneral || context == eContextPaint) {                
+    // if paint context, it is a mandated input called 'brush'
+    ClipDescriptor *maskClip = context == eContextGeneral ? desc.defineClip("Mask") : desc.defineClip("Brush");
+    maskClip->addSupportedComponent(ePixelComponentAlpha);
+    maskClip->setTemporalClipAccess(false);
+    if(context == eContextGeneral)
+      maskClip->setOptional(true);
+    maskClip->setSupportsTiles(true); 
+    maskClip->setIsMask(true); // we are a mask input
+  }
+
+  // create the mandated output clip
+  ClipDescriptor *dstClip = desc.defineClip(kOfxImageEffectOutputClipName);
+  dstClip->addSupportedComponent(ePixelComponentRGBA);
+  dstClip->addSupportedComponent(ePixelComponentAlpha);
+  dstClip->setSupportsTiles(true);
+
+  // make some pages and to things in 
+  PageParamDescriptor *page = desc.definePageParam("Controls");
+
+  // group param to group the scales
+  GroupParamDescriptor *componentScalesGroup = desc.defineGroupParam("componentScales");
+  componentScalesGroup->setHint("Scales on the individual component");
+  componentScalesGroup->setLabels("Components", "Components", "Components");            
+
+  // make overall scale params 
+  DoubleParamDescriptor *param = defineScaleParam(desc, "scale", "scale", "Scales all component in the image", 0);
+  page->addChild(*param);
+
+  // add a boolean to enable the component scale
+  BooleanParamDescriptor *boolP = desc.defineBooleanParam("scaleComponents");
+  boolP->setDefault(true);
+  boolP->setHint("Enables scales on individual components");
+  boolP->setLabels("Scale Components", "Scale Components", "Scale Components");
+  boolP->setParent(*componentScalesGroup);
+  page->addChild(*boolP);
+
+  // make the four component scale params 
+  param = defineScaleParam(desc, "scaleR", "red", "Scales the red component of the image", componentScalesGroup);
+  page->addChild(*param);
+
+  param = defineScaleParam(desc, "scaleG", "green", "Scales the green component of the image", componentScalesGroup);
+  page->addChild(*param);
+
+  param = defineScaleParam(desc, "scaleB", "blue", "Scales the blue component of the image", componentScalesGroup);
+  page->addChild(*param);
+
+  param = defineScaleParam(desc, "scaleA", "alpha", "Scales the alpha component of the image", componentScalesGroup);
+  page->addChild(*param);
+}
+
+ImageEffect *BasicExamplePluginFactory::createInstance(OfxImageEffectHandle handle, ContextEnum /*context*/)
+{
+  return new BasicPlugin(handle);
+}
+
+namespace OFX 
+{
+  namespace Plugin 
+  {
+    void getPluginIDs(OFX::PluginFactoryArray &ids)
+    {
+      static BasicExamplePluginFactory p("net.sf.openfx.basicPlugin", 1, 0);
+      ids.push_back(&p);
+    }  
+  }
+}

third_party/openfx/Support/Plugins/Basic/basic.dsp

@@ -0,0 +1,107 @@
+# Microsoft Developer Studio Project File - Name="basic" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=basic - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "basic.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "basic.mak" CFG="basic - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "basic - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "basic - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "basic - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "PROPTESTER_EXPORTS" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "../../include" /I "../../../include" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "PROPTESTER_EXPORTS" /YX /FD /c
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x809 /d "NDEBUG"
+# ADD RSC /l 0x809 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib opengl32.lib /nologo /dll /machine:I386 /out:"Release/PropTester.ofx.bundle/Contents/Win32/basic.ofx"
+
+!ELSEIF  "$(CFG)" == "basic - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "PROPTESTER_EXPORTS" /YX /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /ZI /Od /I "../../include" /I "../../../include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "PROPTESTER_EXPORTS" /YX /FD /GZ /c
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x809 /d "_DEBUG"
+# ADD RSC /l 0x809 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib opengl32.lib /nologo /dll /debug /machine:I386 /out:"C:\Program Files\Common Files\OFX\Plugins\Basic.ofx.bundle\Contents\Win32\basic.ofx" /pdbtype:sept
+
+!ENDIF 
+
+# Begin Target
+
+# Name "basic - Win32 Release"
+# Name "basic - Win32 Debug"
+# Begin Group "Source Files"
+
+# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+# Begin Source File
+
+SOURCE=.\basic.cpp
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter "h;hpp;hxx;hm;inl"
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+# End Group
+# End Target
+# End Project

third_party/openfx/Support/Plugins/Basic/basic.dsw

@@ -0,0 +1,44 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "basic"=.\basic.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name ofxsupport
+    End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "ofxsupport"=..\..\Library\ofxsupport.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+

third_party/openfx/Support/Plugins/Basic/basic.vcproj

@@ -0,0 +1,464 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="basic"
+	ProjectGUID="{F14E0B69-3767-44B1-A28C-326B09350C7E}"
+	RootNamespace="basic"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="_DEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Debug/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;PROPTESTER_EXPORTS"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win32/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				GenerateDebugInformation="true"
+				ProgramDatabaseFile="$(IntDir)/$(InputName).pdb"
+				ImportLibrary="$(IntDir)/$(InputName).lib"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="_DEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="3"
+				TypeLibraryName=".\Debug/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN64;_DEBUG;_WINDOWS;_USRDLL;"
+				MinimalRebuild="false"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win64/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				GenerateDebugInformation="true"
+				ProgramDatabaseFile="$(OutDir)/$(InputName).pdb"
+				ImportLibrary="$(OutDir)/$(InputName).lib"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="NDEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Release/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;PROPTESTER_EXPORTS"
+				StringPooling="true"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win32/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				ProgramDatabaseFile="$(IntDir)/$(InputName).pdb"
+				ImportLibrary="$(IntDir)/$(InputName).lib"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="NDEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="3"
+				TypeLibraryName=".\Release/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN64;NDEBUG;_WINDOWS;_USRDLL;"
+				StringPooling="false"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win64/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				ProgramDatabaseFile="$(OutDir)/$(InputName).pdb"
+				ImportLibrary="$(OutDir)/$(InputName).lib"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+			>
+			<File
+				RelativePath="basic.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl"
+			>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+			>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

third_party/openfx/Support/Plugins/CMakeLists.txt

@@ -0,0 +1,48 @@
+include(OpenFX)
+
+set(PLUGINS
+        Basic
+        ChoiceParams
+        Field
+        Generator
+        GPUGain
+        Invert
+        MultiBundle
+        Retimer
+        Tester
+        Transition)
+
+foreach(PLUGIN IN LISTS PLUGINS)
+	file(GLOB_RECURSE PLUGIN_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/${PLUGIN}/*.cpp")
+	if (${PLUGIN} STREQUAL "GPUGain")
+          if(APPLE)
+            file(GLOB_RECURSE METAL_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/${PLUGIN}/*.mm") # add Metal kernel
+            list(APPEND PLUGIN_SOURCES ${METAL_SOURCES})
+          endif()
+          if (OFX_SUPPORTS_CUDARENDER)
+            file(GLOB_RECURSE CUDA_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/${PLUGIN}/*.cu")
+            list(APPEND PLUGIN_SOURCES ${CUDA_SOURCES})
+          endif()
+          if (NOT OFX_SUPPORTS_OPENCLRENDER)
+            list(FILTER PLUGIN_SOURCES EXCLUDE REGEX "OpenCLKernel")
+          endif()
+	endif()
+
+	set(TGT example-${PLUGIN}-support)
+	add_ofx_plugin(${TGT} ${PLUGIN})
+	target_sources(${TGT} PUBLIC ${PLUGIN_SOURCES})
+	target_link_libraries(${TGT} ${CONAN_LIBS} OfxSupport opengl::opengl)
+	target_include_directories(${TGT} PUBLIC ${OFX_HEADER_DIR} ${OFX_SUPPORT_HEADER_DIR})
+        if(APPLE)
+          target_link_libraries(${TGT} "-framework Metal" "-framework Foundation" "-framework QuartzCore")
+          if (OFX_SUPPORTS_OPENCLRENDER)
+            target_link_libraries(${TGT} "-framework OpenCL")
+          endif()
+        else()
+          if (OFX_SUPPORTS_OPENCLRENDER)
+            target_link_libraries(${TGT} OpenCL::Headers OpenCL::OpenCL)
+          endif()
+        endif()
+
+
+endforeach()

third_party/openfx/Support/Plugins/ChoiceParams/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>choiceparams.ofx</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1d1</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

third_party/openfx/Support/Plugins/ChoiceParams/choiceparams.cpp

@@ -0,0 +1,681 @@
+
+
+#ifdef _WINDOWS
+#include <windows.h>
+#endif
+
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#else
+#include <GL/gl.h>
+#endif
+
+#include <stdio.h>
+#include "ofxsImageEffect.h"
+
+#include "../include/ofxsProcessing.H"
+
+////////////////////////////////////////////////////////////////////////////////
+// a dumb interact that just draw's a square you can drag
+static const OfxPointD kBoxSize = {20, 20};
+
+class ChoiceParamsInteract : public OFX::OverlayInteract {
+protected :
+  enum StateEnum {
+    eInActive,
+    ePoised,
+    ePicked
+  };
+
+  OfxPointD _position;
+  StateEnum _state;
+
+public :
+  ChoiceParamsInteract(OfxInteractHandle handle, OFX::ImageEffect* /*effect*/)
+    : OFX::OverlayInteract(handle)
+    , _state(eInActive)
+  {
+    _position.x = 0;
+    _position.y = 0;
+  }
+
+  // overridden functions from OFX::Interact to do things
+  virtual bool draw(const OFX::DrawArgs &args);
+  virtual bool penMotion(const OFX::PenArgs &args);
+  virtual bool penDown(const OFX::PenArgs &args);
+  virtual bool penUp(const OFX::PenArgs &args);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// rendering routines
+template <class T> inline T
+Minimum(T a, T b) {    return (a < b) ? a : b;}
+
+template <class T> inline T
+Absolute(T a) { return (a < 0) ? -a : a;}
+
+template <class T> inline T 
+Clamp(T v, int min, int max)
+{
+  if(v < T(min)) return T(min);
+  if(v > T(max)) return T(max);
+  return v;
+}
+
+// Base class for the RGBA and the Alpha processor
+class ImageScalerBase : public OFX::ImageProcessor {
+protected :
+  OFX::Image *_srcImg;
+  OFX::Image *_maskImg;
+  double _rScale, _gScale, _bScale, _aScale;
+  bool   _doMasking;
+
+public :
+  /** @brief no arg ctor */
+  ImageScalerBase(OFX::ImageEffect &instance)
+    : OFX::ImageProcessor(instance)
+    , _srcImg(0)
+    , _maskImg(0)
+    , _rScale(1)
+    , _gScale(1)
+    , _bScale(1)
+    , _aScale(1)
+    , _doMasking(false)
+  {        
+  }
+
+  /** @brief set the src image */
+  void setSrcImg(OFX::Image *v) {_srcImg = v;}
+
+  /** @brief set the optional mask image */
+  void setMaskImg(OFX::Image *v) {_maskImg = v;}
+
+  // Are we masking. We can't derive this from the mask image being set as NULL is a valid value for an input image
+  void doMasking(bool v) {_doMasking = v;}
+
+
+  /** @brief set the scale */
+  void setScales(float r, float g, float b, float a)
+  {
+    _rScale = r;
+    _gScale = g;
+    _bScale = b;
+    _aScale = a;
+  }
+
+};
+
+// template to do the RGBA processing
+template <class PIX, int nComponents, int max>
+class ImageScaler : public ImageScalerBase {
+public :
+  // ctor
+  ImageScaler(OFX::ImageEffect &instance) 
+    : ImageScalerBase(instance)
+  {}
+
+  // and do some processing
+  void multiThreadProcessImages(OfxRectI procWindow)
+  {
+    float scales[4];
+    scales[0] = nComponents == 1 ? (float)_aScale : (float)_rScale;
+    scales[1] = (float)_gScale;
+    scales[2] = (float)_bScale;
+    scales[3] = (float)_aScale;
+
+    float maskScale = 1.0f;
+
+    for(int y = procWindow.y1; y < procWindow.y2; y++) {
+      if(_effect.abort()) break;
+
+      PIX *dstPix = (PIX *) _dstImg->getPixelAddress(procWindow.x1, y);
+
+      for(int x = procWindow.x1; x < procWindow.x2; x++) {
+
+        PIX *srcPix = (PIX *)  (_srcImg ? _srcImg->getPixelAddress(x, y) : 0);
+
+        // are we doing masking
+        if(_doMasking) {
+          // we do, get the pixel from the mask
+          if(!_maskImg)
+            maskScale = 1.0f;
+          else
+          {
+            PIX *maskPix = (PIX *)  (_maskImg ? _maskImg->getPixelAddress(x, y) : 0);
+            // figure the scale factor from that pixel
+            maskScale = maskPix != 0 ? float(*maskPix)/float(max) : 0.0f;
+          }
+        }
+
+        // do we have a source image to scale up
+        if(srcPix) {
+          for(int c = 0; c < nComponents; c++) {
+            float v;
+
+            // scale the component up by the scale factor, modulated by the maskScale
+            if(maskScale != 1.0f) 
+              v = srcPix[c] * (1.0f + (scales[c] - 1.0f) * maskScale);
+            else
+              v = srcPix[c] * scales[c];
+
+            if(max == 1)  // implies floating point and so no clamping
+              dstPix[c] = PIX(v);
+            else  // integer based and we need to clamp
+              dstPix[c] = PIX(Clamp(v, 0, max));
+          }
+        }
+        else {
+          // no src pixel here, be black and transparent
+          for(int c = 0; c < nComponents; c++) {
+            dstPix[c] = 0;
+          }
+        }
+        // increment the dst pixel
+        dstPix += nComponents;
+      }
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief The plugin that does our work */
+class ChoiceParamsPlugin : public OFX::ImageEffect {
+protected :
+  // do not need to delete these, the ImageEffect is managing them for us
+  OFX::Clip *dstClip_;
+  OFX::Clip *srcClip_;
+  OFX::Clip *maskClip_;
+
+  OFX::ChoiceParam  *red_choice_;
+  OFX::ChoiceParam  *green_choice_;
+  OFX::StrChoiceParam  *blue_choice_;
+
+public :
+  /** @brief ctor */
+  ChoiceParamsPlugin(OfxImageEffectHandle handle)
+    : ImageEffect(handle)
+    , dstClip_(0)
+    , srcClip_(0)
+    , red_choice_(0)
+    , green_choice_(0)
+    , blue_choice_()
+  {
+    dstClip_ = fetchClip(kOfxImageEffectOutputClipName);
+    srcClip_ = fetchClip(kOfxImageEffectSimpleSourceClipName);
+    // name of mask clip depends on the context
+    maskClip_ = getContext() == OFX::eContextFilter ? NULL : fetchClip(getContext() == OFX::eContextPaint ? "Brush" : "Mask");
+    red_choice_   = fetchChoiceParam("red_choice");
+    green_choice_  = fetchChoiceParam("green_choice");
+    if (OFX::getImageEffectHostDescription()->supportsStrChoice)  {
+      blue_choice_ = fetchStrChoiceParam("blue_choice");
+    }
+  }
+
+  /* Override the render */
+  virtual void render(const OFX::RenderArguments &args);
+
+  /* override is identity */
+  virtual bool isIdentity(const OFX::IsIdentityArguments &args, OFX::Clip * &identityClip, double &identityTime);
+
+  /* override changedParam */
+  virtual void changedParam(const OFX::InstanceChangedArgs &args, const std::string &paramName);
+
+  /* override changed clip */
+  virtual void changedClip(const OFX::InstanceChangedArgs &args, const std::string &clipName);
+
+  // override the rod call
+  virtual bool getRegionOfDefinition(const OFX::RegionOfDefinitionArguments &args, OfxRectD &rod);
+
+  // override the roi call
+  virtual void getRegionsOfInterest(const OFX::RegionsOfInterestArguments &args, OFX::RegionOfInterestSetter &rois);
+
+  /* set up and run a processor */
+  void
+    setupAndProcess(ImageScalerBase &, const OFX::RenderArguments &args);
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief render for the filter */
+
+////////////////////////////////////////////////////////////////////////////////
+// basic plugin render function, just a skelington to instantiate templates from
+
+
+/* set up and run a processor */
+void
+ChoiceParamsPlugin::setupAndProcess(ImageScalerBase &processor, const OFX::RenderArguments &args)
+{
+  // get a dst image
+  std::unique_ptr<OFX::Image> dst(dstClip_->fetchImage(args.time));
+  OFX::BitDepthEnum dstBitDepth       = dst->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dst->getPixelComponents();
+
+  // fetch main input image
+  std::unique_ptr<OFX::Image> src(srcClip_->fetchImage(args.time));
+
+  // make sure bit depths are sane
+  if(src.get()) {
+    OFX::BitDepthEnum    srcBitDepth      = src->getPixelDepth();
+    OFX::PixelComponentEnum srcComponents = src->getPixelComponents();
+
+    // see if they have the same depths and bytes and all
+    if(srcBitDepth != dstBitDepth || srcComponents != dstComponents)
+      throw int(1); // HACK!! need to throw an sensible exception here!
+  }
+
+  std::unique_ptr<OFX::Image> mask;
+
+  // do we do masking
+  if(getContext() != OFX::eContextFilter) {
+    mask.reset(maskClip_->fetchImage(args.time));
+    // say we are masking
+    processor.doMasking(true);
+
+    // Set it in the processor 
+    processor.setMaskImg(mask.get());
+  }
+
+  // get the scale parameter values...
+
+  int ri = 0;
+  int gi = 0;
+  std::string bi;
+  double r = 0, g = 0, b = 0, a = 0;
+
+  red_choice_->getValueAtTime(args.time, ri);
+  green_choice_->getValueAtTime(args.time, gi);
+
+  if (ri == 0)
+    r = 0;
+  if (ri == 1)
+    r = 0.5;
+  if (ri == 2)
+    r = 1.0;
+
+  // Note that green options are out of order
+  if (gi == 0)
+    g = 0;
+  if (gi == 2)
+    g = 0.5;
+  if (gi == 1)
+    g = 1.0;
+
+  if (OFX::getImageEffectHostDescription()->supportsStrChoice)  {
+    blue_choice_->getValueAtTime(args.time, bi);
+    if (bi == "blue_0.0")
+      b = 0;
+    if (bi == "blue_0.5")
+      b = 0.5;
+    if (bi == "blue_1.0")
+      b = 1.0;
+  } else {
+    b = 1.0;
+  }
+
+  a = 1.0;                      // always
+
+  // set the images
+  processor.setDstImg(dst.get());
+  processor.setSrcImg(src.get());
+
+
+  // set the render window
+  processor.setRenderWindow(args.renderWindow);
+
+  // set the scales
+  processor.setScales((float)r, (float)g, (float)b, (float)a);
+
+  // Call the base class process member, this will call the derived templated process code
+  processor.process();
+}
+
+// override the rod call
+bool
+ChoiceParamsPlugin::getRegionOfDefinition(const OFX::RegionOfDefinitionArguments &args, OfxRectD &rod)
+{
+  // our RoD is the same as the 'Source' clip's, we are not interested in the mask
+  rod = srcClip_->getRegionOfDefinition(args.time);
+
+  // say we set it
+  return true;
+}
+
+// override the roi call
+void 
+ChoiceParamsPlugin::getRegionsOfInterest(const OFX::RegionsOfInterestArguments &args, OFX::RegionOfInterestSetter &rois)
+{
+  // we don't actually need to do this as this is the default, but do it for examples sake
+  rois.setRegionOfInterest(*srcClip_, args.regionOfInterest);
+
+  // set it on the mask only if we are in an interesting context
+  if(getContext() != OFX::eContextFilter)
+    rois.setRegionOfInterest(*maskClip_, args.regionOfInterest);
+}
+
+// the overridden render function
+void
+ChoiceParamsPlugin::render(const OFX::RenderArguments &args)
+{
+  // instantiate the render code based on the pixel depth of the dst clip
+  OFX::BitDepthEnum       dstBitDepth    = dstClip_->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dstClip_->getPixelComponents();
+
+  // do the rendering
+  if(dstComponents == OFX::ePixelComponentRGBA) {
+    switch(dstBitDepth) {
+case OFX::eBitDepthUByte : {      
+  ImageScaler<unsigned char, 4, 255> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+
+case OFX::eBitDepthUShort : {
+  ImageScaler<unsigned short, 4, 65535> fred(*this);
+  setupAndProcess(fred, args);
+                            }                          
+                            break;
+
+case OFX::eBitDepthFloat : {
+  ImageScaler<float, 4, 1> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+default :
+  OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  }
+  else {
+    switch(dstBitDepth) {
+case OFX::eBitDepthUByte : {
+  ImageScaler<unsigned char, 1, 255> fred(*this);
+  setupAndProcess(fred, args);
+                           }
+                           break;
+
+case OFX::eBitDepthUShort : {
+  ImageScaler<unsigned short, 1, 65535> fred(*this);
+  setupAndProcess(fred, args);
+                            }                          
+                            break;
+
+case OFX::eBitDepthFloat : {
+  ImageScaler<float, 1, 1> fred(*this);
+  setupAndProcess(fred, args);
+                           }                          
+                           break;
+default :
+  OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  } 
+}
+
+// overridden is identity
+bool
+ChoiceParamsPlugin:: isIdentity(const OFX::IsIdentityArguments &args, OFX::Clip * &identityClip, double &identityTime)
+{
+  return false;
+}
+
+// we have changed a param
+void
+ChoiceParamsPlugin::changedParam(const OFX::InstanceChangedArgs &/*args*/, const std::string &paramName)
+{
+}
+
+// we have changed a param
+void
+ChoiceParamsPlugin::changedClip(const OFX::InstanceChangedArgs &/*args*/, const std::string &clipName)
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// stuff for the interact 
+
+// draw the interact
+bool ChoiceParamsInteract::draw(const OFX::DrawArgs &args)
+{
+  OfxRGBColourF col;
+  switch(_state) 
+  {
+  case eInActive : col.r = col.g = col.b = 0.0f; break;
+  case ePoised   : col.r = col.g = col.b = 0.5f; break;
+  case ePicked   : col.r = col.g = col.b = 1.0f; break;
+  }
+
+  // make the box a constant size on screen by scaling by the pixel scale
+  float dx = (float)(kBoxSize.x * args.pixelScale.x);
+  float dy = (float)(kBoxSize.y * args.pixelScale.y);
+
+  // Draw a cross hair, the current coordinate system aligns with the image plane.
+  glPushMatrix();
+
+  // draw the bo
+  glColor3f(col.r, col.g, col.b);
+  glTranslated(_position.x, _position.y, 0);
+  glBegin(GL_POLYGON);
+  glVertex2f(-dx, -dy);
+  glVertex2f(-dx,  dy);
+  glVertex2f( dx,  dy);
+  glVertex2f( dx, -dy);
+  glEnd();
+  glPopMatrix();
+
+  glPushMatrix();
+  // draw a complementary outline
+  glColor3f(1.0f - col.r, 1.0f - col.g, 1.0f - col.b);
+  glTranslated(_position.x, _position.y, 0);
+  glBegin(GL_LINE_LOOP);
+  glVertex2f(-dx, -dy);
+  glVertex2f(-dx,  dy);
+  glVertex2f( dx,  dy);
+  glVertex2f( dx, -dy);
+  glEnd();
+  glPopMatrix();
+
+  return true;
+}
+
+// overridden functions from OFX::Interact to do things
+bool 
+ChoiceParamsInteract::penMotion(const OFX::PenArgs &args)
+{
+  // figure the size of the box in cannonical coords
+  float dx = (float)(kBoxSize.x * args.pixelScale.x);
+  float dy = (float)(kBoxSize.y * args.pixelScale.y);
+
+  // pen position is in cannonical coords
+  OfxPointD penPos = args.penPosition;
+
+  switch(_state) {
+case eInActive : 
+case ePoised   : 
+  {
+    // are we in the box, become 'poised'
+    StateEnum newState;
+    penPos.x -= _position.x;
+    penPos.y -= _position.y;
+    if(Absolute(penPos.x) < dx &&
+      Absolute(penPos.y) < dy) {
+        newState = ePoised;
+    }
+    else {
+      newState = eInActive;
+    }
+
+    if(_state != newState) {
+      // we have a new state
+      _state = newState;
+
+      // and force an overlay redraw
+      _effect->redrawOverlays();
+    }
+  }
+  break;
+
+case ePicked   : 
+  {
+    // move our position
+    _position = penPos;
+
+    // and force an overlay redraw
+    _effect->redrawOverlays();
+  }
+  break;
+  }
+
+  // we have trapped it only if the mouse ain't over it or we are actively dragging
+  return _state != eInActive;
+}
+
+bool 
+ChoiceParamsInteract::penDown(const OFX::PenArgs &args)
+{
+  // this will refigure the state
+  penMotion(args);
+
+  // if poised means we were over it when the pen went down, so pick it
+  if(_state == ePoised) {
+    // we are now picked
+    _state = ePicked;
+
+    // move our position
+    _position = args.penPosition;
+
+    // and request a redraw just incase
+    _effect->redrawOverlays();
+  }
+
+  return _state == ePicked;
+}
+
+bool 
+ChoiceParamsInteract::penUp(const OFX::PenArgs &args)
+{
+  if(_state == ePicked) {
+    // reset to poised for a moment
+    _state = ePoised;
+
+    // this will refigure the state
+    penMotion(args);
+
+    // and redraw for good measure
+    _effect->redrawOverlays();
+
+    // we did trap it
+    return true;
+  }
+
+  // we didn't trap it
+  return false;
+}
+
+
+using namespace OFX;
+
+mDeclarePluginFactory(ChoiceParamsExamplePluginFactory, {}, {});
+
+class ChoiceParamsExampleOverlayDescriptor : public DefaultEffectOverlayDescriptor<ChoiceParamsExampleOverlayDescriptor, ChoiceParamsInteract> {};
+
+void ChoiceParamsExamplePluginFactory::describe(OFX::ImageEffectDescriptor& desc)
+{
+  // basic labels
+  desc.setLabels("Choice Params (Support)", "ChoiceParams(spt)", "Choice Params (Support)");
+  desc.setPluginGrouping("OFX Example (Support)");
+
+  // add the supported contexts, only filter at the moment
+  desc.addSupportedContext(eContextFilter);
+  desc.addSupportedContext(eContextGeneral);
+  desc.addSupportedContext(eContextPaint);
+
+  // add supported pixel depths
+  desc.addSupportedBitDepth(eBitDepthUByte);
+  desc.addSupportedBitDepth(eBitDepthUShort);
+  desc.addSupportedBitDepth(eBitDepthFloat);
+
+  // set a few flags
+  desc.setSingleInstance(false);
+  desc.setHostFrameThreading(false);
+  desc.setSupportsMultiResolution(true);
+  desc.setSupportsTiles(true);
+  desc.setTemporalClipAccess(false);
+  desc.setRenderTwiceAlways(false);
+  desc.setSupportsMultipleClipPARs(false);
+
+  desc.setOverlayInteractDescriptor( new ChoiceParamsExampleOverlayDescriptor);
+}
+
+void ChoiceParamsExamplePluginFactory::describeInContext(OFX::ImageEffectDescriptor& desc, OFX::ContextEnum context)
+{
+  // Source clip only in the filter context
+  // create the mandated source clip
+  ClipDescriptor *srcClip = desc.defineClip(kOfxImageEffectSimpleSourceClipName);
+  srcClip->addSupportedComponent(ePixelComponentRGBA);
+  srcClip->addSupportedComponent(ePixelComponentAlpha);
+  srcClip->setTemporalClipAccess(false);
+  srcClip->setSupportsTiles(true);
+  srcClip->setIsMask(false);
+
+  // if general or paint context, define the mask clip
+  if(context == eContextGeneral || context == eContextPaint) {                
+    // if paint context, it is a mandated input called 'brush'
+    ClipDescriptor *maskClip = context == eContextGeneral ? desc.defineClip("Mask") : desc.defineClip("Brush");
+    maskClip->addSupportedComponent(ePixelComponentAlpha);
+    maskClip->setTemporalClipAccess(false);
+    if(context == eContextGeneral)
+      maskClip->setOptional(true);
+    maskClip->setSupportsTiles(true); 
+    maskClip->setIsMask(true); // we are a mask input
+  }
+
+  // create the mandated output clip
+  ClipDescriptor *dstClip = desc.defineClip(kOfxImageEffectOutputClipName);
+  dstClip->addSupportedComponent(ePixelComponentRGBA);
+  dstClip->addSupportedComponent(ePixelComponentAlpha);
+  dstClip->setSupportsTiles(true);
+
+  // make some pages and to things in 
+  PageParamDescriptor *page = desc.definePageParam("Controls");
+
+  auto *choice1 = desc.defineChoiceParam("red_choice");
+  choice1->appendOption("red: none");
+  choice1->appendOption("red: some");
+  choice1->appendOption("red: lots");
+  choice1->setDefault(0);
+  page->addChild(*choice1);
+
+  // Note: index 1 is "lots" (even though UI order is 2), index 2 is "some"
+  // because options are appended in order.
+  auto *choice2 = desc.defineChoiceParam("green_choice");
+  choice2->appendOption("green: none", "", 0);
+  choice2->appendOption("green: lots", "", 2);
+  choice2->appendOption("green: some", "", 1);
+  choice2->setDefault(0);
+  page->addChild(*choice2);
+
+  if (getImageEffectHostDescription()->supportsStrChoice)  {
+    auto *choice3 = desc.defineStrChoiceParam("blue_choice");
+    choice3->appendOption("blue_0.0", "blue: none", 0);
+    choice3->appendOption("blue_0.5", "blue: some", 1);
+    choice3->appendOption("blue_1.0", "blue: lots", 2);
+    choice3->setDefault("blue_0.0");
+    page->addChild(*choice3);
+  }
+}
+
+ImageEffect *ChoiceParamsExamplePluginFactory::createInstance(OfxImageEffectHandle handle, ContextEnum /*context*/)
+{
+  return new ChoiceParamsPlugin(handle);
+}
+
+namespace OFX 
+{
+  namespace Plugin 
+  {
+    void getPluginIDs(OFX::PluginFactoryArray &ids)
+    {
+      static ChoiceParamsExamplePluginFactory p("org.openeffects.support.choiceParamsPlugin", 1, 0);
+      ids.push_back(&p);
+    }  
+  }
+}

third_party/openfx/Support/Plugins/ExamplePlugs.sln

@@ -0,0 +1,115 @@
+
+Microsoft Visual Studio Solution File, Format Version 9.00
+# Visual C++ Express 2005
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic", "Basic\basic.vcproj", "{F14E0B69-3767-44B1-A28C-326B09350C7E}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ofxsupport", "..\Library\ofxsupport.vcproj", "{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "noise", "Generator\noise.vcproj", "{F14EBC69-3767-44B1-A28C-326B59350C7F}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "invert", "Invert\invert.vcproj", "{F14E0B89-3767-88B1-A28C-326B0B350C7E}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "retimer", "Retimer\retimer.vcproj", "{F14E0B89-3767-48B1-A28C-326B0F350C7B}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "crossfade", "Transition\crossFade.vcproj", "{C14CCB89-3767-88B1-A28C-326B0B350C7E}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "proptester", "..\PropTester\propTester.vcproj", "{F14E0B69-BD67-4CB1-A28C-326B09350C7B}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MultiBundle", "MultiBundle\multibundle.vcproj", "{F14ECC69-3767-44B1-A28C-32FB09F50C7E}"
+	ProjectSection(ProjectDependencies) = postProject
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707} = {257EC9EE-530A-4A6F-8B2E-AAB1C8458707}
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Debug|Win32.Build.0 = Debug|Win32
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Debug|x64.ActiveCfg = Debug|x64
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Debug|x64.Build.0 = Debug|x64
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Release|Win32.ActiveCfg = Release|Win32
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Release|Win32.Build.0 = Release|Win32
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Release|x64.ActiveCfg = Release|x64
+		{F14E0B69-3767-44B1-A28C-326B09350C7E}.Release|x64.Build.0 = Release|x64
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Debug|Win32.ActiveCfg = Debug|Win32
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Debug|Win32.Build.0 = Debug|Win32
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Debug|x64.ActiveCfg = Debug|x64
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Debug|x64.Build.0 = Debug|x64
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Release|Win32.ActiveCfg = Release|Win32
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Release|Win32.Build.0 = Release|Win32
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Release|x64.ActiveCfg = Release|x64
+		{257EC9EE-530A-4A6F-8B2E-AAB1C8458707}.Release|x64.Build.0 = Release|x64
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Debug|Win32.Build.0 = Debug|Win32
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Debug|x64.ActiveCfg = Debug|x64
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Debug|x64.Build.0 = Debug|x64
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Release|Win32.ActiveCfg = Release|Win32
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Release|Win32.Build.0 = Release|Win32
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Release|x64.ActiveCfg = Release|x64
+		{F14EBC69-3767-44B1-A28C-326B59350C7F}.Release|x64.Build.0 = Release|x64
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Debug|Win32.Build.0 = Debug|Win32
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Debug|x64.ActiveCfg = Debug|x64
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Debug|x64.Build.0 = Debug|x64
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Release|Win32.ActiveCfg = Release|Win32
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Release|Win32.Build.0 = Release|Win32
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Release|x64.ActiveCfg = Release|x64
+		{F14E0B89-3767-88B1-A28C-326B0B350C7E}.Release|x64.Build.0 = Release|x64
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Debug|Win32.Build.0 = Debug|Win32
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Debug|x64.ActiveCfg = Debug|x64
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Debug|x64.Build.0 = Debug|x64
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Release|Win32.ActiveCfg = Release|Win32
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Release|Win32.Build.0 = Release|Win32
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Release|x64.ActiveCfg = Release|x64
+		{F14E0B89-3767-48B1-A28C-326B0F350C7B}.Release|x64.Build.0 = Release|x64
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Debug|Win32.ActiveCfg = Debug|Win32
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Debug|Win32.Build.0 = Debug|Win32
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Debug|x64.ActiveCfg = Debug|x64
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Debug|x64.Build.0 = Debug|x64
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Release|Win32.ActiveCfg = Release|Win32
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Release|Win32.Build.0 = Release|Win32
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Release|x64.ActiveCfg = Release|x64
+		{C14CCB89-3767-88B1-A28C-326B0B350C7E}.Release|x64.Build.0 = Release|x64
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Debug|Win32.Build.0 = Debug|Win32
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Debug|x64.ActiveCfg = Debug|x64
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Debug|x64.Build.0 = Debug|x64
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Release|Win32.ActiveCfg = Release|Win32
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Release|Win32.Build.0 = Release|Win32
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Release|x64.ActiveCfg = Release|x64
+		{F14E0B69-BD67-4CB1-A28C-326B09350C7B}.Release|x64.Build.0 = Release|x64
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Debug|Win32.Build.0 = Debug|Win32
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Debug|x64.ActiveCfg = Debug|Win32
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Release|Win32.ActiveCfg = Release|Win32
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Release|Win32.Build.0 = Release|Win32
+		{F14ECC69-3767-44B1-A28C-32FB09F50C7E}.Release|x64.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

third_party/openfx/Support/Plugins/Field/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>field.ofx</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1d1</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

third_party/openfx/Support/Plugins/Field/field.cpp

@@ -0,0 +1,286 @@
+
+
+#ifdef _WINDOWS
+#include <windows.h>
+#endif
+
+#include <iostream>
+#include <stdio.h>
+#include "ofxsImageEffect.h"
+#include "ofxsMultiThread.h"
+
+#include "../include/ofxsProcessing.H"
+
+
+// Base class for the RGBA and the Alpha processor
+class FieldBase : public OFX::ImageProcessor {
+protected :
+  OFX::Image *_srcImg;
+  OFX::FieldEnum _field;
+public :
+  /** @brief no arg ctor */
+  FieldBase(OFX::ImageEffect &instance, OFX::FieldEnum field)
+    : OFX::ImageProcessor(instance)
+      , _srcImg(0), _field(field)
+  {        
+  }
+
+  /** @brief set the src image */
+  void setSrcImg(OFX::Image *v) {_srcImg = v;}
+};
+
+// template to do the RGBA processing
+template <class PIX, int nComponents, int max>
+class ImageFielder : public FieldBase {
+public :
+  // ctor
+  ImageFielder(OFX::ImageEffect &instance, OFX::FieldEnum field) 
+    : FieldBase(instance, field)
+  {}
+
+  // and do some processing
+  void multiThreadProcessImages(OfxRectI procWindow)
+  {
+    //eFieldLower only the spatially lower field is present
+    //eFieldUpper only the spatially upper field is present
+ 
+    for(int y = procWindow.y1; y < procWindow.y2; y++) {
+      if(_effect.abort()) break;
+
+      PIX *dstPix = (PIX *) _dstImg->getPixelAddress(procWindow.x1, y);
+
+      for(int x = procWindow.x1; x < procWindow.x2; x++) {
+
+        PIX *srcPix = (PIX *)  (_srcImg ? _srcImg->getPixelAddress(x, y) : 0);
+
+        // do we have a source image to scale up
+        if(srcPix) {
+          for(int c = 0; c < nComponents; c++) {
+            if((_field == OFX::eFieldLower) && (c==0))
+              dstPix[c] = max;
+            else if((_field == OFX::eFieldUpper) && (c==2))
+              dstPix[c] = max;
+            else
+              dstPix[c] = max - srcPix[c];
+          }
+        }
+        else {
+          // no src pixel here, be black and transparent
+          for(int c = 0; c < nComponents; c++) {
+            if((_field == OFX::eFieldLower) && (c==0))
+              dstPix[c] = max;
+            else if((_field == OFX::eFieldUpper) && (c==2))
+              dstPix[c] = max;
+            else
+              dstPix[c] = 0;
+          }
+        }
+
+        // increment the dst pixel
+        dstPix += nComponents;
+      }
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief The plugin that does our work */
+class FieldPlugin : public OFX::ImageEffect {
+protected :
+  // do not need to delete these, the ImageEffect is managing them for us
+  OFX::Clip *dstClip_;
+  OFX::Clip *srcClip_;
+
+public :
+  /** @brief ctor */
+  FieldPlugin(OfxImageEffectHandle handle)
+    : ImageEffect(handle)
+    , dstClip_(0)
+    , srcClip_(0)
+  {
+    dstClip_ = fetchClip(kOfxImageEffectOutputClipName);
+    srcClip_ = fetchClip(kOfxImageEffectSimpleSourceClipName);
+  }
+
+  /* Override the render */
+  virtual void render(const OFX::RenderArguments &args);
+
+  /* set up and run a processor */
+  void setupAndProcess(FieldBase &, const OFX::RenderArguments &args);
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief render for the filter */
+
+////////////////////////////////////////////////////////////////////////////////
+// basic plugin render function, just a skelington to instantiate templates from
+
+
+/* set up and run a processor */
+void
+FieldPlugin::setupAndProcess(FieldBase &processor, const OFX::RenderArguments &args)
+{
+  // get a dst image
+  std::unique_ptr<OFX::Image> dst(dstClip_->fetchImage(args.time));
+  OFX::BitDepthEnum dstBitDepth       = dst->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dst->getPixelComponents();
+
+  // fetch main input image
+  std::unique_ptr<OFX::Image> src(srcClip_->fetchImage(args.time));
+
+  // make sure bit depths are sane
+  if(src.get()) {
+    OFX::BitDepthEnum    srcBitDepth      = src->getPixelDepth();
+    OFX::PixelComponentEnum srcComponents = src->getPixelComponents();
+
+    // see if they have the same depths and bytes and all
+    if(srcBitDepth != dstBitDepth || srcComponents != dstComponents)
+      throw int(1); // HACK!! need to throw an sensible exception here!
+  }
+
+  // set the images
+  processor.setDstImg(dst.get());
+  processor.setSrcImg(src.get());
+
+  // set the render window
+  processor.setRenderWindow(args.renderWindow);
+
+  // Call the base class process member, this will call the derived templated process code
+  processor.process();
+}
+
+// the overridden render function
+void
+FieldPlugin::render(const OFX::RenderArguments &args)
+{
+  // instantiate the render code based on the pixel depth of the dst clip
+  OFX::BitDepthEnum       dstBitDepth    = dstClip_->getPixelDepth();
+  OFX::PixelComponentEnum dstComponents  = dstClip_->getPixelComponents();
+
+  double time = args.time;
+  std::cout << "Rendering at time " << time << std::endl;
+  OFX::FieldEnum field = args.fieldToRender;
+
+  // do the rendering
+  if(dstComponents == OFX::ePixelComponentRGBA) 
+  {
+    switch(dstBitDepth) 
+    {
+    case OFX::eBitDepthUByte : 
+    {      
+      ImageFielder<unsigned char, 4, 255> fred(*this, field);
+      setupAndProcess(fred, args);
+    }
+    break;
+    
+    case OFX::eBitDepthUShort : 
+    {
+      ImageFielder<unsigned short, 4, 65535> fred(*this, field);
+      setupAndProcess(fred, args);
+    }                          
+    break;
+    
+    case OFX::eBitDepthFloat : 
+    {
+      ImageFielder<float, 4, 1> fred(*this, field);
+      setupAndProcess(fred, args);
+    }
+    break;
+    default :
+      OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  }
+  else 
+  {
+    switch(dstBitDepth) 
+    {
+    case OFX::eBitDepthUByte : 
+    {
+      ImageFielder<unsigned char, 1, 255> fred(*this, field);
+      setupAndProcess(fred, args);
+    }
+    break;
+      
+    case OFX::eBitDepthUShort : 
+    {
+      ImageFielder<unsigned short, 1, 65535> fred(*this, field);
+      setupAndProcess(fred, args);
+    }                          
+    break;
+      
+    case OFX::eBitDepthFloat : 
+    {
+      ImageFielder<float, 1, 1> fred(*this, field);
+      setupAndProcess(fred, args);
+    }                          
+    break;
+    default :
+      OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+  } 
+}
+
+mDeclarePluginFactory(FieldExamplePluginFactory, {}, {});
+
+using namespace OFX;
+void FieldExamplePluginFactory::describe(OFX::ImageEffectDescriptor &desc)
+{
+  // basic labels
+  desc.setLabels("Field", "Field", "Field");
+  desc.setPluginGrouping("OFX Example (Support)");
+
+  // add the supported contexts, only filter at the moment
+  desc.addSupportedContext(eContextFilter);
+
+  // add supported pixel depths
+  desc.addSupportedBitDepth(eBitDepthUByte);
+  desc.addSupportedBitDepth(eBitDepthUShort);
+  desc.addSupportedBitDepth(eBitDepthFloat);
+
+  // set a few flags
+  desc.setSingleInstance(false);
+  desc.setHostFrameThreading(false);
+  desc.setSupportsMultiResolution(true);
+  desc.setSupportsTiles(true);
+  desc.setTemporalClipAccess(false);
+  desc.setRenderTwiceAlways(true);
+  desc.setSupportsMultipleClipPARs(false);
+}
+
+void FieldExamplePluginFactory::describeInContext(OFX::ImageEffectDescriptor &desc, OFX::ContextEnum /*context*/)
+{
+  // Source clip only in the filter context
+  // create the mandated source clip
+  ClipDescriptor *srcClip = desc.defineClip(kOfxImageEffectSimpleSourceClipName);
+  srcClip->addSupportedComponent(ePixelComponentRGBA);
+  srcClip->addSupportedComponent(ePixelComponentAlpha);
+  srcClip->setTemporalClipAccess(false);
+  srcClip->setSupportsTiles(true);
+  srcClip->setIsMask(false);
+  srcClip->setFieldExtraction(eFieldExtractSingle);
+
+  // create the mandated output clip
+  ClipDescriptor *dstClip = desc.defineClip(kOfxImageEffectOutputClipName);
+  dstClip->addSupportedComponent(ePixelComponentRGBA);
+  dstClip->addSupportedComponent(ePixelComponentAlpha);
+  dstClip->setSupportsTiles(true);
+
+}
+
+OFX::ImageEffect* FieldExamplePluginFactory::createInstance(OfxImageEffectHandle handle, OFX::ContextEnum /*context*/)
+{
+  return new FieldPlugin(handle);
+}
+
+namespace OFX 
+{
+  namespace Plugin 
+  {  
+    void getPluginIDs(OFX::PluginFactoryArray &ids)
+    {
+      static FieldExamplePluginFactory p("net.sf.openfx.fieldPlugin", 1, 0);
+      ids.push_back(&p);
+    }
+  }
+}

third_party/openfx/Support/Plugins/Field/field.vcproj

@@ -0,0 +1,464 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="field"
+	ProjectGUID="{F14E0B89-3767-88B1-A28C-326B0B350C7E}"
+	RootNamespace="field"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="_DEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Debug/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;PROPTESTER_EXPORTS"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win32/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				GenerateDebugInformation="true"
+				ProgramDatabaseFile="$(IntDir)/$(InputName).pdb"
+				ImportLibrary="$(IntDir)/$(InputName).lib"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="_DEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="3"
+				TypeLibraryName=".\Debug/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN64;_DEBUG;_WINDOWS;_USRDLL;"
+				MinimalRebuild="false"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win64/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				GenerateDebugInformation="true"
+				ProgramDatabaseFile="$(OutDir)/$(InputName).pdb"
+				ImportLibrary="$(OutDir)/$(InputName).lib"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Debug/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="NDEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Release/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;PROPTESTER_EXPORTS"
+				StringPooling="true"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win32/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				ProgramDatabaseFile="$(IntDir)/$(InputName).pdb"
+				ImportLibrary="$(IntDir)/$(InputName).lib"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|x64"
+			OutputDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			IntermediateDirectory=".\$(ConfigurationName)-$(PlatformName)"
+			ConfigurationType="2"
+			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="false"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="NDEBUG"
+				MkTypLibCompatible="true"
+				SuppressStartupBanner="true"
+				TargetEnvironment="3"
+				TypeLibraryName=".\Release/$(InputName).tlb"
+				HeaderFileName=""
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="../../include,../../../include"
+				PreprocessorDefinitions="WIN64;NDEBUG;_WINDOWS;_USRDLL;"
+				StringPooling="false"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				PrecompiledHeaderFile=".\$(ConfigurationName)-$(PlatformName)/$(InputName).pch"
+				AssemblerListingLocation="$(IntDir)/"
+				ObjectFile="$(IntDir)/"
+				ProgramDataBaseFileName="$(IntDir)/"
+				WarningLevel="3"
+				SuppressStartupBanner="true"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="2057"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="odbc32.lib odbccp32.lib opengl32.lib"
+				OutputFile="../$(OutDir)/$(InputName).ofx.bundle/Contents/Win64/$(InputName).ofx"
+				LinkIncremental="1"
+				SuppressStartupBanner="true"
+				ProgramDatabaseFile="$(OutDir)/$(InputName).pdb"
+				ImportLibrary="$(OutDir)/$(InputName).lib"
+				TargetMachine="17"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+				SuppressStartupBanner="true"
+				OutputFile=".\Release/$(InputName).bsc"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCWebDeploymentTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
+			>
+			<File
+				RelativePath="field.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						AdditionalIncludeDirectories=""
+						PreprocessorDefinitions=""
+					/>
+				</FileConfiguration>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl"
+			>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
+			>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

third_party/openfx/Support/Plugins/GPUGain/CudaKernel.cu

@@ -0,0 +1,26 @@
+
+
+__global__ void GainAdjustKernel(int p_Width, int p_Height, float p_GainR, float p_GainG, float p_GainB, float p_GainA, const float* p_Input, float* p_Output)
+{
+   const int x = blockIdx.x * blockDim.x + threadIdx.x;
+   const int y = blockIdx.y * blockDim.y + threadIdx.y;
+
+   if ((x < p_Width) && (y < p_Height))
+   {
+       const int index = ((y * p_Width) + x) * 4;
+
+       p_Output[index + 0] = p_Input[index + 0] * p_GainR;
+       p_Output[index + 1] = p_Input[index + 1] * p_GainG;
+       p_Output[index + 2] = p_Input[index + 2] * p_GainB;
+       p_Output[index + 3] = p_Input[index + 3] * p_GainA;
+   }
+}
+
+void RunCudaKernel(void* p_Stream, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output)
+{
+    dim3 threads(128, 1, 1);
+    dim3 blocks(((p_Width + threads.x - 1) / threads.x), p_Height, 1);
+    cudaStream_t stream = static_cast<cudaStream_t>(p_Stream);
+
+    GainAdjustKernel<<<blocks, threads, 0, stream>>>(p_Width, p_Height, p_Gain[0], p_Gain[1], p_Gain[2], p_Gain[3], p_Input, p_Output);
+}

third_party/openfx/Support/Plugins/GPUGain/GPUGain.cpp

@@ -0,0 +1,462 @@
+
+
+#include "GPUGain.h"
+
+#include <stdio.h>
+
+#include "ofxsImageEffect.h"
+#include "ofxsMultiThread.h"
+#include "ofxsProcessing.h"
+#include "ofxsLog.h"
+
+#define kPluginName "GPU Gain"
+#define kPluginGrouping "OFX Example (Support)"
+#define kPluginDescription "Apply separate RGB gain adjustments to each channels; CUDA/OpenCL Buffers/OpenCL Images/Metal"
+#define kPluginIdentifier "com.OpenFXSample.GPUGain"
+#define kPluginVersionMajor 1
+#define kPluginVersionMinor 0
+
+#define kSupportsTiles false
+#define kSupportsMultiResolution false
+#define kSupportsMultipleClipPARs false
+
+////////////////////////////////////////////////////////////////////////////////
+
+class GainExample : public OFX::ImageProcessor
+{
+public:
+    explicit GainExample(OFX::ImageEffect& p_Instance);
+
+    virtual void processImagesCuda();
+    virtual void processImagesOpenCL();
+    virtual void processImagesMetal();
+    virtual void multiThreadProcessImages(OfxRectI p_ProcWindow);
+
+    void setSrcImg(OFX::Image* p_SrcImg);
+    void setScales(float p_ScaleR, float p_ScaleG, float p_ScaleB, float p_ScaleA);
+
+private:
+    OFX::Image* _srcImg;
+    float _scales[4];
+};
+
+GainExample::GainExample(OFX::ImageEffect& p_Instance)
+    : OFX::ImageProcessor(p_Instance)
+{
+}
+
+#ifdef OFX_SUPPORTS_CUDARENDER
+extern void RunCudaKernel(void* p_Stream, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output);
+#endif
+
+void GainExample::processImagesCuda()
+{
+#ifdef OFX_SUPPORTS_CUDARENDER
+    const OfxRectI& bounds = _srcImg->getBounds();
+    const int width = bounds.x2 - bounds.x1;
+    const int height = bounds.y2 - bounds.y1;
+
+    float* input = static_cast<float*>(_srcImg->getPixelData());
+    float* output = static_cast<float*>(_dstImg->getPixelData());
+
+    RunCudaKernel(_pCudaStream, width, height, _scales, input, output);
+#endif
+}
+
+#ifdef __APPLE__
+extern void RunMetalKernel(void* p_CmdQ, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output);
+#endif
+
+void GainExample::processImagesMetal()
+{
+#ifdef __APPLE__
+    const OfxRectI& bounds = _srcImg->getBounds();
+    const int width = bounds.x2 - bounds.x1;
+    const int height = bounds.y2 - bounds.y1;
+
+    float* input = static_cast<float*>(_srcImg->getPixelData());
+    float* output = static_cast<float*>(_dstImg->getPixelData());
+
+    RunMetalKernel(_pMetalCmdQ, width, height, _scales, input, output);
+#endif
+}
+
+extern void RunOpenCLKernelBuffers(void* p_CmdQ, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output);
+extern void RunOpenCLKernelImages(void* p_CmdQ, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output);
+
+void GainExample::processImagesOpenCL()
+{
+#ifdef OFX_SUPPORTS_OPENCLRENDER
+    const OfxRectI& bounds = _srcImg->getBounds();
+    const int width = bounds.x2 - bounds.x1;
+    const int height = bounds.y2 - bounds.y1;
+
+    float* input = static_cast<float*>(_srcImg->getOpenCLImage());
+    float* output = static_cast<float*>(_dstImg->getOpenCLImage());
+
+    // if a plugin supports both OpenCL Buffers and Images, the host decides which is used and
+    // the plugin must determine which based on whether kOfxImageEffectPropOpenCLImage or kOfxImagePropData is set
+    if (input || output)
+    {
+        RunOpenCLKernelImages(_pOpenCLCmdQ, width, height, _scales, input, output);
+    }
+    else
+    {
+        input = static_cast<float*>(_srcImg->getPixelData());
+        output = static_cast<float*>(_dstImg->getPixelData());
+
+        RunOpenCLKernelBuffers(_pOpenCLCmdQ, width, height, _scales, input, output);
+}
+#endif
+}
+
+void GainExample::multiThreadProcessImages(OfxRectI p_ProcWindow)
+{
+    for (int y = p_ProcWindow.y1; y < p_ProcWindow.y2; ++y)
+    {
+        if (_effect.abort()) break;
+
+        float* dstPix = static_cast<float*>(_dstImg->getPixelAddress(p_ProcWindow.x1, y));
+
+        for (int x = p_ProcWindow.x1; x < p_ProcWindow.x2; ++x)
+        {
+            float* srcPix = static_cast<float*>(_srcImg ? _srcImg->getPixelAddress(x, y) : 0);
+
+            // do we have a source image to scale up
+            if (srcPix)
+            {
+                for(int c = 0; c < 4; ++c)
+                {
+                    dstPix[c] = srcPix[c] * _scales[c];
+                }
+            }
+            else
+            {
+                // no src pixel here, be black and transparent
+                for (int c = 0; c < 4; ++c)
+                {
+                    dstPix[c] = 0;
+                }
+            }
+
+            // increment the dst pixel
+            dstPix += 4;
+        }
+    }
+}
+
+void GainExample::setSrcImg(OFX::Image* p_SrcImg)
+{
+    _srcImg = p_SrcImg;
+}
+
+void GainExample::setScales(float p_ScaleR, float p_ScaleG, float p_ScaleB, float p_ScaleA)
+{
+    _scales[0] = p_ScaleR;
+    _scales[1] = p_ScaleG;
+    _scales[2] = p_ScaleB;
+    _scales[3] = p_ScaleA;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+/** @brief The plugin that does our work */
+class GPUGain : public OFX::ImageEffect
+{
+public:
+    explicit GPUGain(OfxImageEffectHandle p_Handle);
+
+    /* Override the render */
+    virtual void render(const OFX::RenderArguments& p_Args);
+
+    /* Override is identity */
+    virtual bool isIdentity(const OFX::IsIdentityArguments& p_Args, OFX::Clip*& p_IdentityClip, double& p_IdentityTime);
+
+    /* Override changedParam */
+    virtual void changedParam(const OFX::InstanceChangedArgs& p_Args, const std::string& p_ParamName);
+
+    /* Override changed clip */
+    virtual void changedClip(const OFX::InstanceChangedArgs& p_Args, const std::string& p_ClipName);
+
+    /* Set the enabledness of the component scale params depending on the type of input image and the state of the scaleComponents param */
+    void setEnabledness();
+
+    /* Set up and run a processor */
+    void setupAndProcess(GainExample &p_GainExample, const OFX::RenderArguments& p_Args);
+
+private:
+    // Does not own the following pointers
+    OFX::Clip* m_DstClip;
+    OFX::Clip* m_SrcClip;
+
+    OFX::DoubleParam* m_Scale;
+    OFX::DoubleParam* m_ScaleR;
+    OFX::DoubleParam* m_ScaleG;
+    OFX::DoubleParam* m_ScaleB;
+    OFX::DoubleParam* m_ScaleA;
+    OFX::BooleanParam* m_ComponentScalesEnabled;
+};
+
+GPUGain::GPUGain(OfxImageEffectHandle p_Handle)
+    : ImageEffect(p_Handle)
+{
+    m_DstClip = fetchClip(kOfxImageEffectOutputClipName);
+    m_SrcClip = fetchClip(kOfxImageEffectSimpleSourceClipName);
+
+    m_Scale = fetchDoubleParam("scale");
+    m_ScaleR = fetchDoubleParam("scaleR");
+    m_ScaleG = fetchDoubleParam("scaleG");
+    m_ScaleB = fetchDoubleParam("scaleB");
+    m_ScaleA = fetchDoubleParam("scaleA");
+    m_ComponentScalesEnabled = fetchBooleanParam("scaleComponents");
+
+    // Set the enabledness of our RGBA sliders
+    setEnabledness();
+}
+
+void GPUGain::render(const OFX::RenderArguments& p_Args)
+{
+    if ((m_DstClip->getPixelDepth() == OFX::eBitDepthFloat) && (m_DstClip->getPixelComponents() == OFX::ePixelComponentRGBA))
+    {
+        GainExample imageScaler(*this);
+        setupAndProcess(imageScaler, p_Args);
+    }
+    else
+    {
+        OFX::throwSuiteStatusException(kOfxStatErrUnsupported);
+    }
+}
+
+bool GPUGain::isIdentity(const OFX::IsIdentityArguments& p_Args, OFX::Clip*& p_IdentityClip, double& p_IdentityTime)
+{
+    double rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
+
+    if (m_ComponentScalesEnabled->getValueAtTime(p_Args.time))
+    {
+        rScale = m_ScaleR->getValueAtTime(p_Args.time);
+        gScale = m_ScaleG->getValueAtTime(p_Args.time);
+        bScale = m_ScaleB->getValueAtTime(p_Args.time);
+        aScale = m_ScaleA->getValueAtTime(p_Args.time);
+    }
+
+    const double scale = m_Scale->getValueAtTime(p_Args.time);
+    rScale *= scale;
+    gScale *= scale;
+    bScale *= scale;
+
+    if ((rScale == 1.0) && (gScale == 1.0) && (bScale == 1.0) && (aScale == 1.0))
+    {
+        p_IdentityClip = m_SrcClip;
+        p_IdentityTime = p_Args.time;
+        return true;
+    }
+
+    return false;
+}
+
+void GPUGain::changedParam(const OFX::InstanceChangedArgs& p_Args, const std::string& p_ParamName)
+{
+    if (p_ParamName == "scaleComponents")
+    {
+        setEnabledness();
+    }
+}
+
+void GPUGain::changedClip(const OFX::InstanceChangedArgs& p_Args, const std::string& p_ClipName)
+{
+    if (p_ClipName == kOfxImageEffectSimpleSourceClipName)
+    {
+        setEnabledness();
+    }
+}
+
+void GPUGain::setEnabledness()
+{
+    // the component enabledness depends on the clip being RGBA and the param being true
+    const bool enable = (m_ComponentScalesEnabled->getValue() && (m_SrcClip->getPixelComponents() == OFX::ePixelComponentRGBA));
+
+    m_ScaleR->setEnabled(enable);
+    m_ScaleG->setEnabled(enable);
+    m_ScaleB->setEnabled(enable);
+    m_ScaleA->setEnabled(enable);
+}
+
+void GPUGain::setupAndProcess(GainExample& p_GainExample, const OFX::RenderArguments& p_Args)
+{
+    // Get the dst image
+    std::unique_ptr<OFX::Image> dst(m_DstClip->fetchImage(p_Args.time));
+    OFX::BitDepthEnum dstBitDepth = dst->getPixelDepth();
+    OFX::PixelComponentEnum dstComponents = dst->getPixelComponents();
+
+    // Get the src image
+    std::unique_ptr<OFX::Image> src(m_SrcClip->fetchImage(p_Args.time));
+    OFX::BitDepthEnum srcBitDepth = src->getPixelDepth();
+    OFX::PixelComponentEnum srcComponents = src->getPixelComponents();
+
+    // Check to see if the bit depth and number of components are the same
+    if ((srcBitDepth != dstBitDepth) || (srcComponents != dstComponents))
+    {
+        OFX::throwSuiteStatusException(kOfxStatErrValue);
+    }
+
+    double rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
+
+    if (m_ComponentScalesEnabled->getValueAtTime(p_Args.time))
+    {
+        rScale = m_ScaleR->getValueAtTime(p_Args.time);
+        gScale = m_ScaleG->getValueAtTime(p_Args.time);
+        bScale = m_ScaleB->getValueAtTime(p_Args.time);
+        aScale = m_ScaleA->getValueAtTime(p_Args.time);
+    }
+
+    const double scale = m_Scale->getValueAtTime(p_Args.time);
+    rScale *= scale;
+    gScale *= scale;
+    bScale *= scale;
+
+    // Set the images
+    p_GainExample.setDstImg(dst.get());
+    p_GainExample.setSrcImg(src.get());
+
+    // Setup OpenCL and CUDA Render arguments
+    p_GainExample.setGPURenderArgs(p_Args);
+
+    // Set the render window
+    p_GainExample.setRenderWindow(p_Args.renderWindow);
+
+    // Set the scales
+    p_GainExample.setScales(rScale, gScale, bScale, aScale);
+
+    // Call the base class process member, this will call the derived templated process code
+    p_GainExample.process();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+using namespace OFX;
+
+GPUGainFactory::GPUGainFactory()
+    : OFX::PluginFactoryHelper<GPUGainFactory>(kPluginIdentifier, kPluginVersionMajor, kPluginVersionMinor)
+{
+}
+
+void GPUGainFactory::describe(OFX::ImageEffectDescriptor& p_Desc)
+{
+    // Basic labels
+    p_Desc.setLabels(kPluginName, kPluginName, kPluginName);
+    p_Desc.setPluginGrouping(kPluginGrouping);
+    p_Desc.setPluginDescription(kPluginDescription);
+
+    // Add the supported contexts, only filter at the moment
+    p_Desc.addSupportedContext(eContextFilter);
+    p_Desc.addSupportedContext(eContextGeneral);
+
+    // Add supported pixel depths
+    p_Desc.addSupportedBitDepth(eBitDepthFloat);
+
+    // Set a few flags
+    p_Desc.setSingleInstance(false);
+    p_Desc.setHostFrameThreading(false);
+    p_Desc.setSupportsMultiResolution(kSupportsMultiResolution);
+    p_Desc.setSupportsTiles(kSupportsTiles);
+    p_Desc.setTemporalClipAccess(false);
+    p_Desc.setRenderTwiceAlways(false);
+    p_Desc.setSupportsMultipleClipPARs(kSupportsMultipleClipPARs);
+
+    // Setup OpenCL render capability flags
+    p_Desc.setSupportsOpenCLBuffersRender(true);
+    p_Desc.setSupportsOpenCLImagesRender(true);
+
+    // Setup CUDA render capability flags on non-Apple system
+#ifndef __APPLE__
+    p_Desc.setSupportsCudaRender(true);
+    p_Desc.setSupportsCudaStream(true);
+#endif
+
+    // Setup Metal render capability flags only on Apple system
+#ifdef __APPLE__
+    p_Desc.setSupportsMetalRender(true);
+#endif
+}
+
+static DoubleParamDescriptor* defineScaleParam(OFX::ImageEffectDescriptor& p_Desc, const std::string& p_Name, const std::string& p_Label,
+                                               const std::string& p_Hint, GroupParamDescriptor* p_Parent)
+{
+    DoubleParamDescriptor* param = p_Desc.defineDoubleParam(p_Name);
+    param->setLabels(p_Label, p_Label, p_Label);
+    param->setScriptName(p_Name);
+    param->setHint(p_Hint);
+    param->setDefault(1);
+    param->setRange(0, 10);
+    param->setIncrement(0.1);
+    param->setDisplayRange(0, 10);
+    param->setDoubleType(eDoubleTypeScale);
+
+    if (p_Parent)
+    {
+        param->setParent(*p_Parent);
+    }
+
+    return param;
+}
+
+
+void GPUGainFactory::describeInContext(OFX::ImageEffectDescriptor& p_Desc, OFX::ContextEnum /*p_Context*/)
+{
+    // Source clip only in the filter context
+    // Create the mandated source clip
+    ClipDescriptor* srcClip = p_Desc.defineClip(kOfxImageEffectSimpleSourceClipName);
+    srcClip->addSupportedComponent(ePixelComponentRGBA);
+    srcClip->setTemporalClipAccess(false);
+    srcClip->setSupportsTiles(kSupportsTiles);
+    srcClip->setIsMask(false);
+
+    // Create the mandated output clip
+    ClipDescriptor* dstClip = p_Desc.defineClip(kOfxImageEffectOutputClipName);
+    dstClip->addSupportedComponent(ePixelComponentRGBA);
+    dstClip->addSupportedComponent(ePixelComponentAlpha);
+    dstClip->setSupportsTiles(kSupportsTiles);
+
+    // Make some pages and to things in
+    PageParamDescriptor* page = p_Desc.definePageParam("Controls");
+
+    // Group param to group the scales
+    GroupParamDescriptor* componentScalesGroup = p_Desc.defineGroupParam("componentScales");
+    componentScalesGroup->setHint("Scales on the individual component");
+    componentScalesGroup->setLabels("Components", "Components", "Components");
+
+    // Make overall scale params
+    DoubleParamDescriptor* param = defineScaleParam(p_Desc, "scale", "scale", "Scales all component in the image", 0);
+    page->addChild(*param);
+
+    // Add a boolean to enable the component scale
+    BooleanParamDescriptor* boolParam = p_Desc.defineBooleanParam("scaleComponents");
+    boolParam->setDefault(true);
+    boolParam->setHint("Enables scales on individual components");
+    boolParam->setLabels("Scale Components", "Scale Components", "Scale Components");
+    boolParam->setParent(*componentScalesGroup);
+    page->addChild(*boolParam);
+
+    // Make the four component scale params
+    param = defineScaleParam(p_Desc, "scaleR", "red", "Scales the red component of the image", componentScalesGroup);
+    page->addChild(*param);
+
+    param = defineScaleParam(p_Desc, "scaleG", "green", "Scales the green component of the image", componentScalesGroup);
+    page->addChild(*param);
+
+    param = defineScaleParam(p_Desc, "scaleB", "blue", "Scales the blue component of the image", componentScalesGroup);
+    page->addChild(*param);
+
+    param = defineScaleParam(p_Desc, "scaleA", "alpha", "Scales the alpha component of the image", componentScalesGroup);
+    page->addChild(*param);
+}
+
+ImageEffect* GPUGainFactory::createInstance(OfxImageEffectHandle p_Handle, ContextEnum /*p_Context*/)
+{
+    return new GPUGain(p_Handle);
+}
+
+void OFX::Plugin::getPluginIDs(PluginFactoryArray& p_FactoryArray)
+{
+    static GPUGainFactory gainPlugin;
+    p_FactoryArray.push_back(&gainPlugin);
+}

third_party/openfx/Support/Plugins/GPUGain/GPUGain.h

@@ -0,0 +1,16 @@
+
+
+#pragma once
+
+#include "ofxsImageEffect.h"
+
+class GPUGainFactory : public OFX::PluginFactoryHelper<GPUGainFactory>
+{
+public:
+    GPUGainFactory();
+    virtual void load() {}
+    virtual void unload() {}
+    virtual void describe(OFX::ImageEffectDescriptor& p_Desc);
+    virtual void describeInContext(OFX::ImageEffectDescriptor& p_Desc, OFX::ContextEnum p_Context);
+    virtual OFX::ImageEffect* createInstance(OfxImageEffectHandle p_Handle, OFX::ContextEnum p_Context);
+};

third_party/openfx/Support/Plugins/GPUGain/GPUGain.sln

@@ -0,0 +1,21 @@
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+# Visual Studio 2013
+VisualStudioVersion = 12.0.40629.0
+MinimumVisualStudioVersion = 10.0.40219.1
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+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{88405F0E-918E-4523-8627-1380BC83A605}.Debug|x64.ActiveCfg = Debug|x64
+		{88405F0E-918E-4523-8627-1380BC83A605}.Debug|x64.Build.0 = Debug|x64
+		{88405F0E-918E-4523-8627-1380BC83A605}.Release|x64.ActiveCfg = Release|x64
+		{88405F0E-918E-4523-8627-1380BC83A605}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

third_party/openfx/Support/Plugins/GPUGain/GPUGain.vcxproj

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+      <Configuration>Release</Configuration>
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+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{88405F0E-918E-4523-8627-1380BC83A605}</ProjectGuid>
+    <RootNamespace>GPUGain</RootNamespace>
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+    <ClCompile Include="..\Support\Library\ofxsImageEffect.cpp" />
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+    <ClCompile Include="..\Support\Library\ofxsParams.cpp" />
+    <ClCompile Include="..\Support\Library\ofxsProperty.cpp" />
+    <ClCompile Include="..\Support\Library\ofxsPropertyValidation.cpp" />
+    <ClCompile Include="GPUGain.cpp" />
+    <ClCompile Include="OpenCLKernel.cpp" />
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+				3DF51C6C1CB741110070CA48 /* CudaKernel.cu */,
+				3DF51C6D1CB741110070CA48 /* GPUGain.cpp */,
+				3DF51C6E1CB741110070CA48 /* GPUGain.h */,
+				3DF51C701CB741110070CA48 /* Makefile */,
+				3DF51C711CB741110070CA48 /* OpenCLKernel.cpp */,
+				4F799E1E1EC4662F00E46226 /* MetalKernel.mm */,
+			);
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+			dependencies = (
+			);
+			name = GPUGain;
+			passBuildSettingsInEnvironment = 1;
+			productName = GPUGain;
+		};
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+			isa = PBXProject;
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+				ORGANIZATIONNAME = blackmagicdesign;
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+					3DF51C661CB740BF0070CA48 = {
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+				English,
+				en,
+			);
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+			targets = (
+				3DF51C661CB740BF0070CA48 /* GPUGain */,
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+/* Begin XCBuildConfiguration section */
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+					"$(inherited)",
+				);
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+		};
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+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.10;
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+				SDKROOT = macosx;
+			};
+			name = Release;
+		};
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+			isa = XCBuildConfiguration;
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+			isa = XCBuildConfiguration;
+			buildSettings = {
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+				3DF51C671CB740BF0070CA48 /* Debug */,
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+		};
+		3DF51C691CB740BF0070CA48 /* Build configuration list for PBXLegacyTarget "GPUGain" */ = {
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+			buildConfigurations = (
+				3DF51C6A1CB740BF0070CA48 /* Debug */,
+				3DF51C6B1CB740BF0070CA48 /* Release */,
+			);
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+			defaultConfigurationName = Release;
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+/* End XCConfigurationList section */
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+}

third_party/openfx/Support/Plugins/GPUGain/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>GPUGain.ofx</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1d1</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

third_party/openfx/Support/Plugins/GPUGain/MetalKernel.mm

@@ -0,0 +1,108 @@
+
+
+#import <Metal/Metal.h>
+
+#include <unordered_map>
+#include <mutex>
+
+const char* kernelSource =  \
+"#include <metal_stdlib>\n" \
+"using namespace metal; \n" \
+"kernel void GainAdjustKernel(constant int& p_Width [[buffer (11)]], constant int& p_Height [[buffer (12)]], constant float& p_GainR [[buffer (13)]],    \n" \
+"                             constant float& p_GainG [[buffer (14)]], constant float& p_GainB [[buffer (15)]], constant float& p_GainA [[buffer (16)]], \n" \
+"                             const device float* p_Input [[buffer (0)]], device float* p_Output [[buffer (8)]], uint2 id [[ thread_position_in_grid ]]) \n" \
+"{                                                                                                                                                       \n" \
+"   if ((id.x < p_Width) && (id.y < p_Height))                                                                                                           \n" \
+"   {                                                                                                                                                    \n" \
+"       const int index = ((id.y * p_Width) + id.x) * 4;                                                                                                 \n" \
+"       p_Output[index + 0] = p_Input[index + 0] * p_GainR;                                                                                              \n" \
+"       p_Output[index + 1] = p_Input[index + 1] * p_GainG;                                                                                              \n" \
+"       p_Output[index + 2] = p_Input[index + 2] * p_GainB;                                                                                              \n" \
+"       p_Output[index + 3] = p_Input[index + 3] * p_GainA;                                                                                              \n" \
+"   }                                                                                                                                                    \n" \
+"}                                                                                                                                                       \n";
+
+std::mutex s_PipelineQueueMutex;
+typedef std::unordered_map<id<MTLCommandQueue>, id<MTLComputePipelineState>> PipelineQueueMap;
+PipelineQueueMap s_PipelineQueueMap;
+
+void RunMetalKernel(void* p_CmdQ, int p_Width, int p_Height, float* p_Gain, const float* p_Input, float* p_Output)
+{
+    const char* kernelName = "GainAdjustKernel";
+
+    id<MTLCommandQueue>            queue = static_cast<id<MTLCommandQueue> >(p_CmdQ);
+    id<MTLDevice>                  device = queue.device;
+    id<MTLLibrary>                 metalLibrary;     // Metal library
+    id<MTLFunction>                kernelFunction;   // Compute kernel
+    id<MTLComputePipelineState>    pipelineState;    // Metal pipeline
+    NSError* err;
+
+    std::unique_lock<std::mutex> lock(s_PipelineQueueMutex);
+
+    const auto it = s_PipelineQueueMap.find(queue);
+    if (it == s_PipelineQueueMap.end())
+    {
+        id<MTLLibrary>                 metalLibrary;     // Metal library
+        id<MTLFunction>                kernelFunction;   // Compute kernel
+        NSError* err;
+
+        MTLCompileOptions* options = [MTLCompileOptions new];
+        options.fastMathEnabled = YES;
+        if (!(metalLibrary    = [device newLibraryWithSource:@(kernelSource) options:options error:&err]))
+        {
+            fprintf(stderr, "Failed to load metal library, %s\n", err.localizedDescription.UTF8String);
+            return;
+        }
+        [options release];
+        if (!(kernelFunction  = [metalLibrary newFunctionWithName:[NSString stringWithUTF8String:kernelName]/* constantValues : constantValues */]))
+        {
+            fprintf(stderr, "Failed to retrieve kernel\n");
+            [metalLibrary release];
+            return;
+        }
+        if (!(pipelineState   = [device newComputePipelineStateWithFunction:kernelFunction error:&err]))
+        {
+            fprintf(stderr, "Unable to compile, %s\n", err.localizedDescription.UTF8String);
+            [metalLibrary release];
+            [kernelFunction release];
+            return;
+        }
+
+        s_PipelineQueueMap[queue] = pipelineState;
+
+        //Release resources
+        [metalLibrary release];
+        [kernelFunction release];
+    }
+    else
+    {
+        pipelineState = it->second;
+    }
+
+    id<MTLBuffer> srcDeviceBuf = reinterpret_cast<id<MTLBuffer> >(const_cast<float *>(p_Input));
+    id<MTLBuffer> dstDeviceBuf = reinterpret_cast<id<MTLBuffer> >(p_Output);
+
+    id<MTLCommandBuffer> commandBuffer = [queue commandBuffer];
+    commandBuffer.label = [NSString stringWithFormat:@"GainAdjustKernel"];
+
+    id<MTLComputeCommandEncoder> computeEncoder = [commandBuffer computeCommandEncoder];
+    [computeEncoder setComputePipelineState:pipelineState];
+
+    int exeWidth = [pipelineState threadExecutionWidth];
+    MTLSize threadGroupCount = MTLSizeMake(exeWidth, 1, 1);
+    MTLSize threadGroups     = MTLSizeMake((p_Width + exeWidth - 1)/exeWidth, p_Height, 1);
+
+    [computeEncoder setBuffer:srcDeviceBuf offset: 0 atIndex: 0];
+    [computeEncoder setBuffer:dstDeviceBuf offset: 0 atIndex: 8];
+    [computeEncoder setBytes:&p_Width length:sizeof(int) atIndex:11];
+    [computeEncoder setBytes:&p_Height length:sizeof(int) atIndex:12];
+    [computeEncoder setBytes:&p_Gain[0] length:sizeof(float) atIndex:13];
+    [computeEncoder setBytes:&p_Gain[1] length:sizeof(float) atIndex:14];
+    [computeEncoder setBytes:&p_Gain[2] length:sizeof(float) atIndex:15];
+    [computeEncoder setBytes:&p_Gain[3] length:sizeof(float) atIndex:16];
+
+    [computeEncoder dispatchThreadgroups:threadGroups threadsPerThreadgroup: threadGroupCount];
+
+    [computeEncoder endEncoding];
+    [commandBuffer commit];
+}