multicam: initial implementation

app/node/factory.cpp

@@ -49,6 +49,7 @@
 #include "generator/text/textv1.h"
 #include "generator/text/textv2.h"
 #include "generator/text/textv3.h"
+#include "input/multicam/multicamnode.h"
 #include "input/time/timeinput.h"
 #include "input/value/valuenode.h"
 #include "keying/chromakey/chromakey.h"
@@ -294,6 +295,8 @@ Node *NodeFactory::CreateFromFactoryIndex(const NodeFactory::InternalID &id)
     return new DropShadowFilter();
   case kTimeFormat:
     return new TimeFormatNode();
+  case kMulticamNode:
+    return new MultiCamNode();
 
   case kInternalNodeCount:
     break;

app/node/factory.h

@@ -76,6 +76,7 @@ public:
     kMaskDistort,
     kDropShadowFilter,
     kTimeFormat,
+    kMulticamNode,
 
     // Count value
     kInternalNodeCount

app/node/input/CMakeLists.txt

@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+add_subdirectory(multicam)
 add_subdirectory(time)
 add_subdirectory(value)
 

app/node/input/multicam/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2022 Olive 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/>.
+
+set(OLIVE_SOURCES
+  ${OLIVE_SOURCES}
+  node/input/multicam/multicamnode.h
+  node/input/multicam/multicamnode.cpp
+  PARENT_SCOPE
+)

app/node/input/multicam/multicamnode.cpp

@@ -1,6 +1,64 @@
 #include "multicamnode.h"
 
+namespace olive {
+
+#define super Node
+
+const QString MultiCamNode::kCurrentInput = QStringLiteral("current_in");
+const QString MultiCamNode::kSourcesInput = QStringLiteral("sources_in");
+
 MultiCamNode::MultiCamNode()
 {
+  AddInput(kCurrentInput, NodeValue::kInt, InputFlags(kInputFlagStatic));
+
+  AddInput(kSourcesInput, NodeValue::kNone, InputFlags(kInputFlagNotKeyframable | kInputFlagArray));
+}
+
+QString MultiCamNode::Name() const
+{
+  return tr("Multi-Cam");
+}
+
+QString MultiCamNode::id() const
+{
+  return QStringLiteral("org.olivevideoeditor.Olive.multicam");
+}
+
+QVector<Node::CategoryID> MultiCamNode::Category() const
+{
+  return {kCategoryTimeline};
+}
+
+QString MultiCamNode::Description() const
+{
+  return tr("Allows easy switching between multiple sources.");
+}
+
+Node::ActiveElements MultiCamNode::GetActiveElementsAtTime(const QString &input, const TimeRange &r) const
+{
+  if (input == kSourcesInput) {
+    Node::ActiveElements a;
+    a.add(GetStandardValue(kCurrentInput).toInt());
+    return a;
+  } else {
+    return super::GetActiveElementsAtTime(input, r);
+  }
+}
+
+void MultiCamNode::Value(const NodeValueRow &value, const NodeGlobals &globals, NodeValueTable *table) const
+{
+  NodeValueArray arr = value[kSourcesInput].toArray();
+  if (!arr.empty()) {
+    table->Push(arr.begin()->second);
+  }
+}
+
+void MultiCamNode::Retranslate()
+{
+  super::Retranslate();
+
+  SetInputName(kCurrentInput, tr("Current"));
+  SetInputName(kSourcesInput, tr("Sources"));
+}
 
 }

app/node/input/multicam/multicamnode.h

@@ -1,11 +1,34 @@
 #ifndef MULTICAMNODE_H
 #define MULTICAMNODE_H
 
+#include "node/node.h"
 
-class MultiCamNode
+namespace olive {
+
+class MultiCamNode : public Node
 {
+  Q_OBJECT
 public:
   MultiCamNode();
+
+  NODE_DEFAULT_FUNCTIONS(MultiCamNode)
+
+  virtual QString Name() const override;
+  virtual QString id() const override;
+  virtual QVector<CategoryID> Category() const override;
+  virtual QString Description() const override;
+
+  virtual ActiveElements GetActiveElementsAtTime(const QString &input, const TimeRange &r) const override;
+
+  virtual void Value(const NodeValueRow& value, const NodeGlobals &globals, NodeValueTable *table) const override;
+
+  virtual void Retranslate() override;
+
+  static const QString kCurrentInput;
+  static const QString kSourcesInput;
+
 };
 
+}
+
 #endif // MULTICAMNODE_H