engine: add init/project/timeline families to the C ABI facade

- oakengine_init/shutdown with HEADLESS/RENDER flags: headless boots
  Config, NodeFactory, ColorManager, task/conform/proxy/frame/disk
  managers and the serializer (plus an offscreen QGuiApplication that
  Qt requires for QAction); RENDER adds RenderManager. Idempotent and
  upgradable, no UI anywhere
- oakengine_project_* (17): create/load/save, modified state, name,
  footage enumeration with online check, undo/redo, sequence access
- oakengine_sequence_* (13): name, length (seconds and rational),
  frame rate, per-type track counts, playhead (timestamp and seconds),
  work area, markers; sequences are borrowed handles owned by their
  project
- pure-C oakengine_init_test covers init idempotency, save/load
  round-trip through a real fixture project, footage online checks,
  timeline parameters, and NULL/bounds safety - no GL required
This commit is contained in:
2026-07-20 04:54:45 +08:00
parent 37845302f9
commit 5db7aac058
10 changed files with 2163 additions and 0 deletions
+8
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@@ -44,6 +44,7 @@ add_subdirectory(timeline)
add_subdirectory(tool)
add_subdirectory(ui)
add_subdirectory(undo)
add_subdirectory(src/capi)
add_library(oakengine SHARED
${OLIVE_SOURCES}
@@ -225,4 +226,11 @@ if (BUILD_TESTS)
endfunction()
make_oakengine_test(oakengine_ipc_test)
make_oakengine_test(oakengine_init_test)
# Resolves the real test assets (tests/demo.mp4, the footage fixture
# project) relative to the repository root, like tests/gtest does.
target_compile_definitions(oakengine_init_test PRIVATE
OAK_TEST_SOURCE_DIR="${CMAKE_SOURCE_DIR}"
)
endif ()
+125
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@@ -0,0 +1,125 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 OAKENGINE_INIT_H
#define OAKENGINE_INIT_H
#include "export.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file init.h
* @brief C ABI for engine process initialization and shutdown
*
* oakengine_init() brings up the UI-independent engine services a consumer of
* liboakengine needs before touching projects or timelines. It never creates
* any UI: no QApplication, no main window, no display connection. When no
* application object exists yet, an offscreen QGuiApplication is created (Qt
* requires exactly one application object; it is leaked intentionally because
* Qt cannot safely re-create one). A QGuiApplication -- not a plain
* QCoreApplication -- is required because EngineCore's undo stack creates
* QActions in its constructor, and Qt6 QActions need QGuiApplication state;
* with the offscreen QPA plugin (the default, overridable through
* QT_QPA_PLATFORM) nothing graphical ever happens.
*
* The flag mask selects the service set:
*
* - OAKENGINE_INIT_HEADLESS: Config, NodeFactory, ColorManager, TaskManager,
* ConformManager, ProxyManager, FrameManager, DiskManager,
* ProjectSerializer and a process-wide EngineCore shell (holds the global
* undo stack and the EngineCore::instance() pointer engine code
* dereferences). DiskManager is not part of EngineCore::start() but is
* required because loading a project touches PlaybackCache state which
* dereferences DiskManager::instance(). Everything here runs headless;
* no GL is required.
*
* - OAKENGINE_INIT_RENDER: additionally creates the RenderManager. Only
* with this bit may a consumer end up needing a GL context (the actual
* render backends are dynamic engine plugins loaded on demand).
*
* Initialization is modelled on the render worker's headless bootstrap
* (worker/workermain.cpp) rather than EngineCore::start(), because start()
* unconditionally creates the RenderManager, starts the autorecovery timer
* and reads the recent-projects list -- application behavior that does not
* belong behind a library boundary.
*
* Conventions:
* - Return codes: 0 (OAKENGINE_OK) on success, a negative OAKENGINE_E_*
* error code on failure.
* - oakengine_init() is idempotent: calling it again is a no-op for flag
* bits already initialized and only brings up the missing bits (e.g.
* upgrading HEADLESS to HEADLESS|RENDER).
* - oakengine_shutdown() pairs with oakengine_init() and tears down the
* initialized services in reverse order. The QCoreApplication and the
* EngineCore shell are kept alive (see above), so oakengine_init() may be
* called again afterwards.
*/
/**
* @brief Status and error codes shared by the init/project/timeline families.
*/
#define OAKENGINE_OK 0 /**< Success. */
#define OAKENGINE_E_INVALID (-1) /**< NULL handle or invalid argument. */
#define OAKENGINE_E_STATE (-2) /**< Call not valid in the current state. */
#define OAKENGINE_E_FAILED (-3) /**< The engine reported a failure. */
#define OAKENGINE_E_NOT_FOUND (-4) /**< Index out of range / entry not found. */
/** @brief Base headless engine services (no GL required). */
#define OAKENGINE_INIT_HEADLESS 0x01
/** @brief Render services on top of HEADLESS (may require GL). */
#define OAKENGINE_INIT_RENDER 0x02
/**
* @brief Initialize the engine services selected by `flags`.
*
* `flags` is a bitmask of OAKENGINE_INIT_HEADLESS and/or
* OAKENGINE_INIT_RENDER; 0 is invalid. Repeated calls are idempotent and may
* add the RENDER bit to a running HEADLESS instance.
*
* @return OAKENGINE_OK on success, OAKENGINE_E_INVALID for an empty mask.
*/
OAKENGINE_API int oakengine_init(int flags);
/**
* @brief Tear down the services brought up by oakengine_init().
*
* Safe to call when not initialized (a no-op then). The QCoreApplication and
* the EngineCore shell survive shutdown intentionally.
*
* @return OAKENGINE_OK.
*/
OAKENGINE_API int oakengine_shutdown(void);
/**
* @brief Current initialization state as a flag bitmask (0 = not initialized).
*
* Only services that are actually up are reported, e.g. after upgrading a
* HEADLESS instance with the RENDER bit the result includes both bits.
*/
OAKENGINE_API int oakengine_init_flags(void);
#ifdef __cplusplus
}
#endif
#endif /* OAKENGINE_INIT_H */
+202
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@@ -0,0 +1,202 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 OAKENGINE_PROJECT_H
#define OAKENGINE_PROJECT_H
#include "export.h"
#include "init.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file project.h
* @brief C ABI for Oak project files (.ove)
*
* An OakEngineProject wraps the engine's olive::Project node graph. Projects
* are created empty with oakengine_project_create() and must then be given
* content exactly once: either oakengine_project_new() for a blank project or
* oakengine_project_load() to read a project file (the engine's project
* serializers require a fresh, uninitialized project, so loading into a
* project that already has content is rejected with OAKENGINE_E_STATE).
*
* Sequences are owned by their project through Qt's QObject parent chain;
* OakEngineSequence handles are borrowed views whose lifetime follows the
* project. See timeline.h for the sequence function family.
*
* Conventions (matching oakengine/ipc.h):
* - Booleans are int (1/0).
* - Return codes: 0 (OAKENGINE_OK) on success, negative OAKENGINE_E_* on
* failure.
* - String output uses the buf/size convention: the return value is the
* number of characters that would have been written excluding the NUL,
* so buf == NULL or a short buffer queries the required size. The output
* is NUL-terminated whenever buf_size > 0. A negative return value is an
* OAKENGINE_E_* error code.
* - NULL handles are accepted everywhere and yield a no-op / zero result /
* OAKENGINE_E_INVALID.
*
* Undo/redo note: the engine's undo stack is a process-wide singleton held by
* EngineCore (EngineCore::undo_stack()), not a per-project object. The
* project_undo/project_redo family therefore operates on that global stack
* and is not scoped to `self`; oakengine_project_new() and
* oakengine_project_load() clear it, matching the application's
* new/open-project behavior.
*/
/**
* @brief Opaque project handle. Owned by the caller; release with
* oakengine_project_free().
*/
typedef struct OakEngineProject OakEngineProject;
/**
* @brief Opaque sequence (timeline) handle.
*
* Typedef'd here so project.h and timeline.h can be included in any order.
* Handles are borrowed from their owning OakEngineProject (QObject parent
* chain) and must NOT be freed; they become invalid when the project is
* freed. The sequence function family lives in oakengine/timeline.h.
*/
typedef struct OakEngineSequence OakEngineSequence;
/**
* @brief Allocate an empty project shell. Owned by the caller.
*
* The project has no content until exactly one of oakengine_project_new() or
* oakengine_project_load() succeeds on it.
*/
OAKENGINE_API OakEngineProject *oakengine_project_create(void);
/**
* @brief Destroy a project and everything it owns (including sequences).
* NULL-safe.
*/
OAKENGINE_API void oakengine_project_free(OakEngineProject *self);
/**
* @brief Initialize `self` as a new, blank project (untitled, not modified).
*
* Clears the global undo stack. Returns OAKENGINE_E_STATE if the project
* already has content (new/load may only be applied once).
*/
OAKENGINE_API int oakengine_project_new(OakEngineProject *self);
/**
* @brief Load project content from a .ove file.
*
* On success the project's filename is set to `path` and the modified flag is
* cleared; the global undo stack is cleared. Footage is validated like the
* engine does (EngineCore::validate_footage_in_loaded_project): files that
* moved together with the project are resolved relatively; missing footage is
* tolerated (no relink UI exists at this layer, so the project is accepted
* as-is). On failure a human-readable reason is written to `err` using the
* buf/size convention (err may be NULL) and a negative code is returned.
*/
OAKENGINE_API int oakengine_project_load(OakEngineProject *self,
const char *path, char *err,
int err_size);
/**
* @brief Save the project to `path`.
*
* `path` == NULL saves under the project's current filename
* (Project::filename()); saving an untitled project without a path fails with
* OAKENGINE_E_INVALID. Files are gzip-compressed unless the target name ends
* in ".ovexml" (mirrors the application behavior). On success the project's
* filename is set to the target and the modified flag is cleared
* (EngineCore::on_project_saved() semantics, minus the UI recent-list).
*/
OAKENGINE_API int oakengine_project_save(OakEngineProject *self,
const char *path);
OAKENGINE_API int oakengine_project_is_modified(const OakEngineProject *self);
/**
* @brief Set the project modified flag (Project::set_modified).
*/
OAKENGINE_API int oakengine_project_set_modified(OakEngineProject *self,
int modified);
/**
* @brief Project display name (Project::name(): the filename's base name, or
* "(untitled)"). Uses the buf/size convention.
*/
OAKENGINE_API int oakengine_project_name(const OakEngineProject *self,
char *buf, int buf_size);
/**
* @brief Full path the project was loaded from / saved to, or "" if untitled
* (Project::filename()). Uses the buf/size convention.
*/
OAKENGINE_API int oakengine_project_filename(const OakEngineProject *self,
char *buf, int buf_size);
/**
* @brief Number of footage items in the project.
*/
OAKENGINE_API int oakengine_project_footage_count(const OakEngineProject *self);
/**
* @brief Stored filename of the footage item at `index` (Footage::filename(),
* as recorded in the project file; may be relative). Uses the buf/size
* convention; returns OAKENGINE_E_NOT_FOUND for an out-of-range index.
*/
OAKENGINE_API int oakengine_project_footage_filename(
const OakEngineProject *self, int index, char *buf, int buf_size);
/**
* @brief 1 if the footage file at `index` exists on disk, 0 if not.
*
* Mirrors the engine's validation rule: the stored path is checked as-is
* first, then resolved relative to the project file's directory (footage
* that moved together with the project stays online). Returns
* OAKENGINE_E_NOT_FOUND for an out-of-range index.
*/
OAKENGINE_API int
oakengine_project_footage_is_online(const OakEngineProject *self, int index);
/* ---- Undo (global singleton stack, see the file comment above) ---------- */
OAKENGINE_API int oakengine_project_can_undo(const OakEngineProject *self);
OAKENGINE_API int oakengine_project_can_redo(const OakEngineProject *self);
OAKENGINE_API int oakengine_project_undo(OakEngineProject *self);
OAKENGINE_API int oakengine_project_redo(OakEngineProject *self);
/**
* @brief Number of sequences (timelines) in the project.
*/
OAKENGINE_API int
oakengine_project_sequence_count(const OakEngineProject *self);
/**
* @brief Borrowed handle of the sequence at `index`, or NULL when out of
* range. Do NOT free; the sequence is owned by the project.
*/
OAKENGINE_API OakEngineSequence *
oakengine_project_sequence_at(const OakEngineProject *self, int index);
#ifdef __cplusplus
}
#endif
#endif /* OAKENGINE_PROJECT_H */
+185
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@@ -0,0 +1,185 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 OAKENGINE_TIMELINE_H
#define OAKENGINE_TIMELINE_H
#include <stdint.h>
#include "export.h"
#include "init.h"
#include "project.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file timeline.h
* @brief C ABI for sequences (Oak timelines)
*
* An OakEngineSequence wraps the engine's olive::Sequence node
* (engine/node/project/sequence/sequence.h, a ViewerOutput). This family is
* intentionally read-mostly this round: playhead and workarea are simple
* writes, everything else is inspection. Clip/track editing is a later
* milestone.
*
* Handles are borrowed from their owning OakEngineProject (Qt QObject parent
* chain; sequences are added to the project graph which becomes their
* parent). There is deliberately no oakengine_sequence_free(): a sequence
* handle becomes invalid when its project is freed. Sequences created with
* oakengine_sequence_new() are additionally undoable -- undoing the creation
* removes the sequence from the project (but keeps it alive under the undo
* command), redoing brings it back.
*
* Time is exposed in the two representations used across the engine
* (olive::core::Timecode terminology, core/util/timecodefunctions.h):
*
* - seconds: a plain double (`*_seconds` accessors), or a rational seconds
* value as a numerator/denominator int pair (`*_rational`);
*
* - timestamp: an int64 count of timebase units, where the timebase is the
* sequence's frame duration (the frame rate flipped, e.g. 1001/30000 for
* a 30000/1001 sequence) -- i.e. a frame number. This matches how the
* engine converts between Rational times and frame timestamps
* (Timecode::time_to_timestamp / timestamp_to_time).
*
* Conventions match oakengine/project.h: booleans are int, 0
* (OAKENGINE_OK)/negative OAKENGINE_E_* return codes, buf/size string output,
* NULL handles yield no-ops or OAKENGINE_E_INVALID.
*/
/**
* @brief Create a new sequence named `name` in `project` and return its
* borrowed handle (NULL on failure; `project` NULL -> NULL).
*
* The sequence gets the application's default parameters
* (ViewerOutput::set_default_parameters(): width/height/pixel aspect/
* interlacing/audio layout from Config, frame rate from the
* DefaultSequenceFrameRate config entry, 30000/1001 by default) and starts
* with zero tracks. The creation is pushed onto the global undo stack like
* the application's "Create New Sequence" action (minus opening a viewer).
*/
OAKENGINE_API OakEngineSequence *
oakengine_sequence_new(OakEngineProject *project, const char *name);
/**
* @brief Sequence name (Node::get_label()). Uses the buf/size convention.
*/
OAKENGINE_API int oakengine_sequence_name(const OakEngineSequence *self,
char *buf, int buf_size);
/**
* @brief Length of the sequence content in seconds
* (ViewerOutput::get_length()). 0 for an empty sequence.
*/
OAKENGINE_API int oakengine_sequence_get_length(const OakEngineSequence *self,
double *seconds);
/**
* @brief Length of the sequence content as rational seconds
* (ViewerOutput::get_length().numerator()/denominator()).
*/
OAKENGINE_API int
oakengine_sequence_get_length_rational(const OakEngineSequence *self, int *num,
int *den);
/**
* @brief Sequence frame rate as a num/den pair, e.g. 30000/1001
* (ViewerOutput::get_video_params().frame_rate()).
*/
OAKENGINE_API int
oakengine_sequence_get_frame_rate(const OakEngineSequence *self, int *num,
int *den);
/**
* @brief Number of tracks per track type (Sequence::track_list(type)->
* get_track_count()). Any of `video`/`audio`/`subtitle` may be NULL.
*/
OAKENGINE_API int oakengine_sequence_track_count(const OakEngineSequence *self,
int *video, int *audio,
int *subtitle);
/**
* @brief Playhead position as a timestamp in timebase units (frame number;
* ViewerOutput::get_playhead() rescaled to the frame-rate timebase).
*/
OAKENGINE_API int
oakengine_sequence_get_playhead(const OakEngineSequence *self,
int64_t *timestamp);
/**
* @brief Move the playhead to `timestamp` (frame number;
* ViewerOutput::set_playhead()).
*/
OAKENGINE_API int oakengine_sequence_set_playhead(OakEngineSequence *self,
int64_t timestamp);
/**
* @brief Playhead position in seconds.
*/
OAKENGINE_API int
oakengine_sequence_get_playhead_seconds(const OakEngineSequence *self,
double *seconds);
/**
* @brief 1 if the workarea (in/out range) is enabled
* (TimelineWorkArea::enabled()).
*/
OAKENGINE_API int
oakengine_sequence_workarea_is_enabled(const OakEngineSequence *self);
/**
* @brief Workarea in/out points as timestamps in timebase units
* (TimelineWorkArea::in()/out()). Either pointer may be NULL.
*/
OAKENGINE_API int
oakengine_sequence_get_workarea(const OakEngineSequence *self, int64_t *in,
int64_t *out);
/**
* @brief Set the workarea: enable flag plus in/out timestamps in timebase
* units (TimelineWorkArea::set_enabled()/set_range()).
*/
OAKENGINE_API int oakengine_sequence_set_workarea(OakEngineSequence *self,
int enabled, int64_t in,
int64_t out);
/**
* @brief Number of timeline markers (TimelineMarkerList::size()).
*/
OAKENGINE_API int
oakengine_sequence_marker_count(const OakEngineSequence *self);
/**
* @brief Marker at `index`: `time` receives its in-point as a timestamp in
* timebase units (may be NULL), `name` its label using the buf/size
* truncation convention (may be NULL to only fetch the time). Returns
* OAKENGINE_OK on success, OAKENGINE_E_NOT_FOUND for an out-of-range index.
*/
OAKENGINE_API int oakengine_sequence_marker_at(const OakEngineSequence *self,
int index, int64_t *time,
char *name, int name_size);
#ifdef __cplusplus
}
#endif
#endif /* OAKENGINE_TIMELINE_H */
+32
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@@ -0,0 +1,32 @@
# Oak - Non-Linear Video Editor
# Copyright (C) 2026 Oak 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/>.
# C ABI facade of liboakengine (mirrors the pattern documented in
# render/ipc/CMakeLists.txt):
# - include/oakengine/*.h public C API
# - src/capi/*.cpp C ABI implementations
# The init/project/timeline families wrap the engine core, the project
# serializer and the sequence/viewer timeline objects.
set(OLIVE_SOURCES
${OLIVE_SOURCES}
include/oakengine/init.h
include/oakengine/project.h
include/oakengine/timeline.h
src/capi/init.cpp
src/capi/project.cpp
src/capi/timeline.cpp
PARENT_SCOPE
)
+163
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@@ -0,0 +1,163 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 "oakengine/init.h"
#include <QCoreApplication>
#include <QGuiApplication>
#include "codec/conformmanager.h"
#include "codec/proxymanager.h"
#include "config/config.h"
#include "coreengine.h"
#include "node/color/colormanager/colormanager.h"
#include "node/factory.h"
#include "node/project/serializer/serializer.h"
#include "render/diskmanager.h"
#include "render/framemanager.h"
#include "render/rendermanager.h"
#include "task/taskmanager.h"
namespace
{
// Currently initialized OAKENGINE_INIT_* bits.
int g_flags = 0;
// Qt requires exactly one application object for the process and cannot
// safely destroy and re-create one, so when the library has to create it the
// object (and its argv storage) is leaked intentionally.
//
// This is a QGuiApplication, not a plain QCoreApplication: EngineCore's
// UndoStack member creates QActions in its constructor, and Qt6 QActions
// dereference QGuiApplication private state (they crash without one). A
// QGuiApplication is still a QCoreApplication, and with the offscreen QPA
// plugin (defaulted below, overridable by the caller) no display
// connection, window or other UI is ever created.
void ensure_qcoreapplication()
{
if (QCoreApplication::instance()) {
return;
}
// Same default as the gtest harness (tests/gtest/main.cpp).
if (qEnvironmentVariableIsEmpty("QT_QPA_PLATFORM")) {
qputenv("QT_QPA_PLATFORM", "offscreen");
}
static int argc = 1;
static char app_name[] = "oakengine";
static char *argv[] = { app_name, nullptr };
new QGuiApplication(argc, argv);
// Same identity as the editor (app/main.cpp) so Config and friends land
// in the same locations.
QCoreApplication::setOrganizationName(QStringLiteral("oakvideoeditor.org"));
QCoreApplication::setApplicationName(QStringLiteral("Oak Video Editor"));
}
} // namespace
extern "C"
{
int oakengine_init(int flags)
{
if (flags == 0 || (flags & ~(OAKENGINE_INIT_HEADLESS | OAKENGINE_INIT_RENDER)) != 0) {
return OAKENGINE_E_INVALID;
}
if ((flags & OAKENGINE_INIT_HEADLESS) != 0 &&
(g_flags & OAKENGINE_INIT_HEADLESS) == 0) {
ensure_qcoreapplication();
// EngineCore shell: provides EngineCore::instance() and the global
// undo stack. Never deleted -- EngineCore does not reset instance_ in
// its destructor, so deleting would leave a dangling singleton. This
// mirrors the render worker's headless bootstrap.
if (!olive::EngineCore::instance()) {
new olive::EngineCore(olive::EngineCore::CoreParams());
}
olive::Config::load();
olive::NodeFactory::initialize();
olive::ColorManager::set_up_default_config();
olive::TaskManager::create_instance();
olive::ConformManager::create_instance();
olive::ProxyManager::create_instance();
olive::FrameManager::create_instance();
// Not in EngineCore::start(), but required headless: loading a project
// touches PlaybackCache::load_state() which dereferences
// DiskManager::instance() (the render worker creates it for the same
// reason).
olive::DiskManager::create_instance();
olive::ProjectSerializer::initialize();
g_flags |= OAKENGINE_INIT_HEADLESS;
}
if ((flags & OAKENGINE_INIT_RENDER) != 0 &&
(g_flags & OAKENGINE_INIT_RENDER) == 0) {
olive::RenderManager::create_instance();
g_flags |= OAKENGINE_INIT_RENDER;
}
return OAKENGINE_OK;
}
int oakengine_shutdown(void)
{
// Reverse of oakengine_init(), mirroring EngineCore::stop(). The
// QCoreApplication and the EngineCore shell intentionally survive (see
// oakengine_init()).
if ((g_flags & OAKENGINE_INIT_RENDER) != 0) {
olive::RenderManager::destroy_instance();
}
if ((g_flags & OAKENGINE_INIT_HEADLESS) != 0) {
olive::Config::save();
olive::ProjectSerializer::destroy();
olive::DiskManager::destroy_instance();
olive::ConformManager::destroy_instance();
olive::ProxyManager::destroy_instance();
olive::FrameManager::destroy_instance();
olive::TaskManager::destroy_instance();
olive::NodeFactory::destroy();
}
g_flags = 0;
return OAKENGINE_OK;
}
int oakengine_init_flags(void)
{
return g_flags;
}
} // extern "C"
+391
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@@ -0,0 +1,391 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 "oakengine/project.h"
#include <cstdio>
#include <cstring>
#include <QByteArray>
#include <QFileInfo>
#include <QString>
#include "coreengine.h"
#include "node/project.h"
#include "node/project/footage/footage.h"
#include "node/project/sequence/sequence.h"
#include "node/project/serializer/serializer.h"
#include "undo/undostack.h"
namespace
{
olive::Project *impl(OakEngineProject *h)
{
return reinterpret_cast<olive::Project *>(h);
}
const olive::Project *impl(const OakEngineProject *h)
{
return reinterpret_cast<const olive::Project *>(h);
}
OakEngineProject *wrap(olive::Project *p)
{
return reinterpret_cast<OakEngineProject *>(p);
}
OakEngineSequence *wrap_seq(olive::Sequence *s)
{
return reinterpret_cast<OakEngineSequence *>(s);
}
// buf/size convention: returns the would-be length excluding the NUL.
int string_to_buf(const QString &s, char *buf, int buf_size)
{
const QByteArray utf = s.toUtf8();
if (buf && buf_size > 0) {
snprintf(buf, size_t(buf_size), "%s", utf.constData());
}
return int(utf.size());
}
// The footage node at `index` in iteration order over the graph, or nullptr.
olive::Footage *footage_at(const olive::Project *p, int index)
{
if (index < 0) {
return nullptr;
}
int i = 0;
for (olive::Node *n : p->nodes()) {
if (olive::Footage *f = dynamic_cast<olive::Footage *>(n)) {
if (i == index) {
return f;
}
i++;
}
}
return nullptr;
}
// The sequence node at `index` in iteration order over the graph, or nullptr.
olive::Sequence *sequence_at(const olive::Project *p, int index)
{
if (index < 0) {
return nullptr;
}
int i = 0;
for (olive::Node *n : p->nodes()) {
if (olive::Sequence *s = dynamic_cast<olive::Sequence *>(n)) {
if (i == index) {
return s;
}
i++;
}
}
return nullptr;
}
int node_count_of_type(const olive::Project *p, bool sequences)
{
int count = 0;
for (olive::Node *n : p->nodes()) {
const bool match = sequences ?
(dynamic_cast<olive::Sequence *>(n) != nullptr) :
(dynamic_cast<olive::Footage *>(n) != nullptr);
if (match) {
count++;
}
}
return count;
}
// Human-readable text for a failed project load, mirroring the messages in
// ProjectLoadTask::run() (task/project/load/load.cpp).
QString load_error_string(olive::ProjectSerializer::ResultCode code,
const QString &details, const QString &filename)
{
switch (code) {
case olive::ProjectSerializer::k_project_too_old:
return QStringLiteral(
"This project is from a version of Oak Video Editor that is no "
"longer supported in this version.");
case olive::ProjectSerializer::k_project_too_new:
return QStringLiteral(
"This project is from a newer version of Oak Video Editor and "
"cannot be opened in this version.");
case olive::ProjectSerializer::k_unknown_version:
return QStringLiteral("Failed to determine project version.");
case olive::ProjectSerializer::k_file_error:
return QStringLiteral("Failed to read file \"%1\" for reading.")
.arg(filename);
case olive::ProjectSerializer::k_xml_error:
return QStringLiteral(
"Failed to read XML document. File may be corrupt. Error was: %1")
.arg(details);
case olive::ProjectSerializer::k_no_data:
return QStringLiteral("Failed to find any data to parse.");
case olive::ProjectSerializer::k_success:
case olive::ProjectSerializer::k_overwrite_error:
break;
}
return QStringLiteral("Unknown error.");
}
} // namespace
extern "C"
{
OakEngineProject *oakengine_project_create(void)
{
// Not initialized on purpose: the project serializers require a fresh
// project (root folder unset), so oakengine_project_new() and
// oakengine_project_load() perform the one-time content setup.
return wrap(new olive::Project());
}
void oakengine_project_free(OakEngineProject *self)
{
delete impl(self);
}
int oakengine_project_new(OakEngineProject *self)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
if (impl(self)->root() != nullptr) {
return OAKENGINE_E_STATE;
}
impl(self)->initialize();
if (olive::EngineCore::instance()) {
olive::EngineCore::instance()->undo_stack()->clear();
}
return OAKENGINE_OK;
}
int oakengine_project_load(OakEngineProject *self, const char *path,
char *err, int err_size)
{
if (!self || !path) {
return OAKENGINE_E_INVALID;
}
olive::Project *project = impl(self);
if (project->root() != nullptr) {
return OAKENGINE_E_STATE;
}
const QString filename = QString::fromUtf8(path);
project->set_filename(filename);
olive::ProjectSerializer::Result result = olive::ProjectSerializer::load(
project, filename, olive::ProjectSerializer::k_project);
if (result != olive::ProjectSerializer::k_success) {
// The project may be partially loaded; the handle should be freed
// (loading again is rejected above because root is set by then).
string_to_buf(load_error_string(result.code(), result.get_details(),
filename),
err, err_size);
return OAKENGINE_E_FAILED;
}
// Validate footage like the application does: resolve files that moved
// together with the project. Without a relink handler (none exists at
// this layer) the project is accepted as-is.
if (olive::EngineCore::instance()) {
olive::EngineCore::instance()->validate_footage_in_loaded_project(
project, project->get_saved_url());
olive::EngineCore::instance()->undo_stack()->clear();
}
project->set_modified(false);
if (err && err_size > 0) {
err[0] = '\0';
}
return OAKENGINE_OK;
}
int oakengine_project_save(OakEngineProject *self, const char *path)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
olive::Project *project = impl(self);
QString filename = path ? QString::fromUtf8(path) : project->filename();
if (filename.isEmpty()) {
return OAKENGINE_E_INVALID;
}
olive::ProjectSerializer::SaveData data(olive::ProjectSerializer::k_project,
project, filename);
const bool compress = !filename.endsWith(QStringLiteral(".ovexml"),
Qt::CaseInsensitive);
olive::ProjectSerializer::Result result =
olive::ProjectSerializer::save(data, compress);
switch (result.code()) {
case olive::ProjectSerializer::k_success:
project->set_filename(filename);
project->set_modified(false);
return OAKENGINE_OK;
case olive::ProjectSerializer::k_overwrite_error:
// The file could not be replaced and the project was written to a
// temporary name instead; the engine counts this as a success.
project->set_filename(result.get_details());
project->set_modified(false);
return OAKENGINE_OK;
default:
return OAKENGINE_E_FAILED;
}
}
int oakengine_project_is_modified(const OakEngineProject *self)
{
return self && impl(self)->is_modified() ? 1 : 0;
}
int oakengine_project_set_modified(OakEngineProject *self, int modified)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
impl(self)->set_modified(modified != 0);
return OAKENGINE_OK;
}
int oakengine_project_name(const OakEngineProject *self, char *buf,
int buf_size)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
return string_to_buf(impl(self)->name(), buf, buf_size);
}
int oakengine_project_filename(const OakEngineProject *self, char *buf,
int buf_size)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
return string_to_buf(impl(self)->filename(), buf, buf_size);
}
int oakengine_project_footage_count(const OakEngineProject *self)
{
return self ? node_count_of_type(impl(self), false) : 0;
}
int oakengine_project_footage_filename(const OakEngineProject *self, int index,
char *buf, int buf_size)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
olive::Footage *f = footage_at(impl(self), index);
if (!f) {
return OAKENGINE_E_NOT_FOUND;
}
return string_to_buf(f->filename(), buf, buf_size);
}
int oakengine_project_footage_is_online(const OakEngineProject *self,
int index)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
const olive::Project *project = impl(self);
olive::Footage *f = footage_at(project, index);
if (!f) {
return OAKENGINE_E_NOT_FOUND;
}
const QString filename = f->filename();
if (QFileInfo::exists(filename)) {
return 1;
}
// Footage that moved together with the project file: resolve relative
// paths against the project's directory (same rule as
// EngineCore::validate_footage_in_loaded_project()).
if (QFileInfo(filename).isRelative() && !project->filename().isEmpty()) {
const QString resolved =
QFileInfo(project->filename()).dir().filePath(filename);
if (QFileInfo::exists(resolved)) {
return 1;
}
}
return 0;
}
int oakengine_project_can_undo(const OakEngineProject *self)
{
if (!self || !olive::EngineCore::instance()) {
return 0;
}
return olive::EngineCore::instance()->undo_stack()->can_undo() ? 1 : 0;
}
int oakengine_project_can_redo(const OakEngineProject *self)
{
if (!self || !olive::EngineCore::instance()) {
return 0;
}
return olive::EngineCore::instance()->undo_stack()->can_redo() ? 1 : 0;
}
int oakengine_project_undo(OakEngineProject *self)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
if (olive::EngineCore::instance()) {
olive::EngineCore::instance()->undo_stack()->undo();
}
return OAKENGINE_OK;
}
int oakengine_project_redo(OakEngineProject *self)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
if (olive::EngineCore::instance()) {
olive::EngineCore::instance()->undo_stack()->redo();
}
return OAKENGINE_OK;
}
int oakengine_project_sequence_count(const OakEngineProject *self)
{
return self ? node_count_of_type(impl(self), true) : 0;
}
OakEngineSequence *oakengine_project_sequence_at(const OakEngineProject *self,
int index)
{
if (!self) {
return nullptr;
}
return wrap_seq(sequence_at(impl(self), index));
}
} // extern "C"
+326
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@@ -0,0 +1,326 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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 "oakengine/timeline.h"
#include <cstdio>
#include <cstring>
#include <QByteArray>
#include <QString>
#include "coreengine.h"
#include "node/nodeundo.h"
#include "node/project.h"
#include "node/project/folder/folder.h"
#include "node/project/sequence/sequence.h"
#include "timeline/timelinemarker.h"
#include "timeline/timelineworkarea.h"
#include "undo/undocommand.h"
#include "undo/undostack.h"
namespace
{
olive::Sequence *impl(OakEngineSequence *h)
{
return reinterpret_cast<olive::Sequence *>(h);
}
const olive::Sequence *impl(const OakEngineSequence *h)
{
return reinterpret_cast<const olive::Sequence *>(h);
}
OakEngineSequence *wrap(olive::Sequence *s)
{
return reinterpret_cast<OakEngineSequence *>(s);
}
// ViewerOutput::get_playhead() is not a const method in the engine; the
// facade keeps const-correct handles and casts locally.
olive::Sequence *mutable_impl(const OakEngineSequence *h)
{
return const_cast<olive::Sequence *>(
reinterpret_cast<const olive::Sequence *>(h));
}
// buf/size convention: returns the would-be length excluding the NUL.
int string_to_buf(const QString &s, char *buf, int buf_size)
{
const QByteArray utf = s.toUtf8();
if (buf && buf_size > 0) {
snprintf(buf, size_t(buf_size), "%s", utf.constData());
}
return int(utf.size());
}
// Copy a QString into a fixed-capacity C buffer, always NUL-terminating and
// truncating what does not fit.
void copy_to_buf(const QString &s, char *dst, size_t cap)
{
const QByteArray utf = s.toUtf8();
const size_t n = qMin(size_t(utf.size()), cap - 1);
memcpy(dst, utf.constData(), n);
dst[n] = '\0';
}
// The sequence's frame duration as a Rational timebase (frame rate flipped).
// Returns false when the sequence has no valid frame rate (no video params).
bool time_base_of(const olive::Sequence *s, olive::Rational *out)
{
const olive::Rational frame_rate = s->get_video_params().frame_rate();
if (frame_rate.isNull() || frame_rate.isNaN()) {
return false;
}
*out = frame_rate.flipped();
return true;
}
// Rational seconds -> timestamp in timebase units, like
// Timecode::time_to_timestamp with k_round rounding.
int64_t time_to_ts(const olive::Rational &time, const olive::Rational &tb)
{
return olive::core::Timecode::time_to_timestamp(
time, tb, olive::core::Timecode::k_round);
}
} // namespace
extern "C"
{
OakEngineSequence *oakengine_sequence_new(OakEngineProject *project,
const char *name)
{
olive::Project *p = reinterpret_cast<olive::Project *>(project);
if (!p || !p->root()) {
return nullptr;
}
olive::Sequence *sequence = new olive::Sequence();
sequence->set_default_parameters();
sequence->set_label(QString::fromUtf8(name ? name : ""));
// Same undoable creation as the application's "Create New Sequence"
// action (app/core.cpp), minus opening a viewer. Without an EngineCore
// (library not initialized) the command is executed non-undoably.
olive::MultiUndoCommand *command = new olive::MultiUndoCommand();
command->add_child(new olive::NodeAddCommand(p, sequence));
command->add_child(new olive::FolderAddChild(p->root(), sequence));
if (olive::EngineCore::instance()) {
olive::EngineCore::instance()->undo_stack()->push(
command, QStringLiteral("Create Sequence"));
} else {
command->redo_now();
delete command;
}
return wrap(sequence);
}
int oakengine_sequence_name(const OakEngineSequence *self, char *buf,
int buf_size)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
return string_to_buf(impl(self)->get_label(), buf, buf_size);
}
int oakengine_sequence_get_length(const OakEngineSequence *self,
double *seconds)
{
if (!self || !seconds) {
return OAKENGINE_E_INVALID;
}
*seconds = impl(self)->get_length().to_double();
return OAKENGINE_OK;
}
int oakengine_sequence_get_length_rational(const OakEngineSequence *self,
int *num, int *den)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
const olive::Rational length = impl(self)->get_length();
if (num) {
*num = length.numerator();
}
if (den) {
*den = length.denominator();
}
return OAKENGINE_OK;
}
int oakengine_sequence_get_frame_rate(const OakEngineSequence *self, int *num,
int *den)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
const olive::Rational frame_rate = impl(self)->get_video_params().frame_rate();
if (frame_rate.isNull() || frame_rate.isNaN()) {
return OAKENGINE_E_STATE;
}
if (num) {
*num = frame_rate.numerator();
}
if (den) {
*den = frame_rate.denominator();
}
return OAKENGINE_OK;
}
int oakengine_sequence_track_count(const OakEngineSequence *self, int *video,
int *audio, int *subtitle)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
const olive::Sequence *s = impl(self);
if (video) {
*video = s->track_list(olive::Track::k_video)->get_track_count();
}
if (audio) {
*audio = s->track_list(olive::Track::k_audio)->get_track_count();
}
if (subtitle) {
*subtitle = s->track_list(olive::Track::k_subtitle)->get_track_count();
}
return OAKENGINE_OK;
}
int oakengine_sequence_get_playhead(const OakEngineSequence *self,
int64_t *timestamp)
{
if (!self || !timestamp) {
return OAKENGINE_E_INVALID;
}
olive::Rational tb;
if (!time_base_of(impl(self), &tb)) {
return OAKENGINE_E_STATE;
}
*timestamp = time_to_ts(mutable_impl(self)->get_playhead(), tb);
return OAKENGINE_OK;
}
int oakengine_sequence_set_playhead(OakEngineSequence *self, int64_t timestamp)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
olive::Rational tb;
if (!time_base_of(impl(self), &tb)) {
return OAKENGINE_E_STATE;
}
impl(self)->set_playhead(
olive::core::Timecode::timestamp_to_time(timestamp, tb));
return OAKENGINE_OK;
}
int oakengine_sequence_get_playhead_seconds(const OakEngineSequence *self,
double *seconds)
{
if (!self || !seconds) {
return OAKENGINE_E_INVALID;
}
*seconds = mutable_impl(self)->get_playhead().to_double();
return OAKENGINE_OK;
}
int oakengine_sequence_workarea_is_enabled(const OakEngineSequence *self)
{
return self && impl(self)->get_work_area()->enabled() ? 1 : 0;
}
int oakengine_sequence_get_workarea(const OakEngineSequence *self, int64_t *in,
int64_t *out)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
olive::Rational tb;
if (!time_base_of(impl(self), &tb)) {
return OAKENGINE_E_STATE;
}
const olive::TimelineWorkArea *workarea = impl(self)->get_work_area();
if (in) {
*in = time_to_ts(workarea->in(), tb);
}
if (out) {
*out = time_to_ts(workarea->out(), tb);
}
return OAKENGINE_OK;
}
int oakengine_sequence_set_workarea(OakEngineSequence *self, int enabled,
int64_t in, int64_t out)
{
if (!self) {
return OAKENGINE_E_INVALID;
}
olive::Rational tb;
if (!time_base_of(impl(self), &tb)) {
return OAKENGINE_E_STATE;
}
olive::TimelineWorkArea *workarea = impl(self)->get_work_area();
workarea->set_enabled(enabled != 0);
workarea->set_range(
olive::TimeRange(olive::core::Timecode::timestamp_to_time(in, tb),
olive::core::Timecode::timestamp_to_time(out, tb)));
return OAKENGINE_OK;
}
int oakengine_sequence_marker_count(const OakEngineSequence *self)
{
if (!self) {
return 0;
}
return int(impl(self)->get_markers()->size());
}
int oakengine_sequence_marker_at(const OakEngineSequence *self, int index,
int64_t *time, char *name, int name_size)
{
if (!self || index < 0) {
return OAKENGINE_E_INVALID;
}
const olive::TimelineMarkerList *markers = impl(self)->get_markers();
if (size_t(index) >= markers->size()) {
return OAKENGINE_E_NOT_FOUND;
}
const olive::TimelineMarker *marker = *(markers->cbegin() + index);
if (time) {
olive::Rational tb;
if (!time_base_of(impl(self), &tb)) {
return OAKENGINE_E_STATE;
}
*time = time_to_ts(marker->time().in(), tb);
}
if (name && name_size > 0) {
copy_to_buf(marker->name(), name, size_t(name_size));
}
return OAKENGINE_OK;
}
} // extern "C"
+420
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@@ -0,0 +1,420 @@
/***
Oak - Non-Linear Video Editor
Copyright (C) 2026 Oak 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/>.
***/
// Pure C ABI test for the liboakengine init/project/timeline facade.
// Exercises engine init/shutdown, project create/new/save/load round-trips,
// the global undo stack, sequence inspection (length, frame rate, tracks,
// playhead, workarea, markers) and a fixture project with real footage
// (tests/demo.mp4). No Qt, no GL: oakengine_init() creates the
// QCoreApplication itself when needed.
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(_WIN32)
#include <direct.h>
#include <windows.h>
#else
#include <unistd.h>
#endif
#include "oakengine/init.h"
#include "oakengine/project.h"
#include "oakengine/timeline.h"
#ifndef OAK_TEST_SOURCE_DIR
#define OAK_TEST_SOURCE_DIR "."
#endif
static char g_tmpdir[4096];
static void make_tmpdir(void)
{
#if defined(_WIN32)
char base[MAX_PATH];
const DWORD len = GetTempPathA(MAX_PATH, base);
assert(len > 0 && len < MAX_PATH);
snprintf(g_tmpdir, sizeof(g_tmpdir), "%soakengine_init_test_%lu", base,
(unsigned long)GetCurrentProcessId());
assert(_mkdir(g_tmpdir) == 0);
#else
strcpy(g_tmpdir, "/tmp/oakengine_init_test_XXXXXX");
assert(mkdtemp(g_tmpdir) != NULL);
#endif
}
static void make_path(char *dst, size_t cap, const char *filename)
{
const int n = snprintf(dst, cap, "%s/%s", g_tmpdir, filename);
assert(n > 0 && (size_t)n < cap);
}
static int file_exists(const char *path)
{
FILE *f = fopen(path, "rb");
if (!f) {
return 0;
}
fclose(f);
return 1;
}
static void test_init(void)
{
assert(oakengine_init(0) == OAKENGINE_E_INVALID);
assert(oakengine_init(4) == OAKENGINE_E_INVALID); // unknown bit
assert(oakengine_init(OAKENGINE_INIT_HEADLESS) == OAKENGINE_OK);
assert(oakengine_init_flags() == OAKENGINE_INIT_HEADLESS);
// Repeated init is idempotent.
assert(oakengine_init(OAKENGINE_INIT_HEADLESS) == OAKENGINE_OK);
assert(oakengine_init_flags() == OAKENGINE_INIT_HEADLESS);
}
static void test_project_basics(void)
{
OakEngineProject *p = oakengine_project_create();
assert(p != NULL);
// Fresh shell: untitled, unmodified, empty.
assert(oakengine_project_is_modified(p) == 0);
assert(oakengine_project_footage_count(p) == 0);
assert(oakengine_project_sequence_count(p) == 0);
assert(oakengine_project_can_undo(p) == 0);
assert(oakengine_project_can_redo(p) == 0);
assert(oakengine_project_new(p) == OAKENGINE_OK);
// Content setup may only happen once.
assert(oakengine_project_new(p) == OAKENGINE_E_STATE);
// An untitled project reports the engine's "(untitled)" name and an
// empty filename.
char name[64];
const int name_len = oakengine_project_name(p, NULL, 0);
assert(name_len > 0);
assert(oakengine_project_name(p, name, sizeof(name)) == name_len);
assert((int)strlen(name) == name_len);
assert(strcmp(name, "(untitled)") == 0);
// buf/size truncation: reports the full size, writes what fits.
char tiny[4];
assert(oakengine_project_name(p, tiny, sizeof(tiny)) == name_len);
assert(strlen(tiny) == sizeof(tiny) - 1);
char filename[16];
assert(oakengine_project_filename(p, filename, sizeof(filename)) == 0);
assert(filename[0] == '\0');
// Modified flag round-trips.
assert(oakengine_project_set_modified(p, 1) == OAKENGINE_OK);
assert(oakengine_project_is_modified(p) == 1);
assert(oakengine_project_set_modified(p, 0) == OAKENGINE_OK);
assert(oakengine_project_is_modified(p) == 0);
// Saving an untitled project without a path fails.
assert(oakengine_project_save(p, NULL) == OAKENGINE_E_INVALID);
oakengine_project_free(p);
}
static void test_sequence_and_save_load(void)
{
char path[4096];
make_path(path, sizeof(path), "roundtrip.ove");
OakEngineProject *p = oakengine_project_create();
assert(p != NULL);
assert(oakengine_project_new(p) == OAKENGINE_OK);
// Create a sequence through the facade; it is owned by the project.
OakEngineSequence *seq = oakengine_sequence_new(p, "Main");
assert(seq != NULL);
assert(oakengine_project_sequence_count(p) == 1);
assert(oakengine_project_sequence_at(p, 0) == seq);
assert(oakengine_project_sequence_at(p, 1) == NULL);
assert(oakengine_project_sequence_at(p, -1) == NULL);
// The creation went onto the global undo stack and marked the project.
assert(oakengine_project_can_undo(p) == 1);
assert(oakengine_project_is_modified(p) == 1);
// Sequence name round-trips.
char name[64];
const int name_len = oakengine_sequence_name(seq, NULL, 0);
assert(name_len == 4);
assert(oakengine_sequence_name(seq, name, sizeof(name)) == 4);
assert(strcmp(name, "Main") == 0);
// Empty sequence: zero length.
double seconds = -1.0;
assert(oakengine_sequence_get_length(seq, &seconds) == OAKENGINE_OK);
assert(seconds == 0.0);
int num = -1, den = -1;
assert(oakengine_sequence_get_length_rational(seq, &num, &den) ==
OAKENGINE_OK);
assert(num == 0);
// Default frame rate from Config's DefaultSequenceFrameRate entry
// (time base 1001/30000 -> frame rate 30000/1001).
num = den = -1;
assert(oakengine_sequence_get_frame_rate(seq, &num, &den) == OAKENGINE_OK);
assert(num == 30000 && den == 1001);
// Fresh sequences have no tracks.
int video = -1, audio = -1, subtitle = -1;
assert(oakengine_sequence_track_count(seq, &video, &audio, &subtitle) ==
OAKENGINE_OK);
assert(video == 0 && audio == 0 && subtitle == 0);
// Playhead starts at zero and accepts frame timestamps.
int64_t ts = -1;
assert(oakengine_sequence_get_playhead(seq, &ts) == OAKENGINE_OK);
assert(ts == 0);
assert(oakengine_sequence_set_playhead(seq, 30) == OAKENGINE_OK);
ts = -1;
assert(oakengine_sequence_get_playhead(seq, &ts) == OAKENGINE_OK);
assert(ts == 30);
// 30 frames at 1001/30000 per frame = 1.001 seconds.
seconds = -1.0;
assert(oakengine_sequence_get_playhead_seconds(seq, &seconds) ==
OAKENGINE_OK);
assert(fabs(seconds - 1.001) < 1e-9);
// Workarea: disabled by default, then set + read back.
assert(oakengine_sequence_workarea_is_enabled(seq) == 0);
assert(oakengine_sequence_set_workarea(seq, 1, 10, 40) == OAKENGINE_OK);
assert(oakengine_sequence_workarea_is_enabled(seq) == 1);
int64_t in = -1, out = -1;
assert(oakengine_sequence_get_workarea(seq, &in, &out) == OAKENGINE_OK);
assert(in == 10 && out == 40);
// No markers on a fresh sequence.
assert(oakengine_sequence_marker_count(seq) == 0);
assert(oakengine_sequence_marker_at(seq, 0, NULL, NULL, 0) ==
OAKENGINE_E_NOT_FOUND);
// Save; the modified flag clears and the filename is adopted.
assert(oakengine_project_save(p, path) == OAKENGINE_OK);
assert(oakengine_project_is_modified(p) == 0);
assert(file_exists(path));
char filename[4096];
assert(oakengine_project_filename(p, filename, sizeof(filename)) ==
(int)strlen(path));
assert(strcmp(filename, path) == 0);
// Undo removes the sequence, redo brings the same object back.
assert(oakengine_project_undo(p) == OAKENGINE_OK);
assert(oakengine_project_sequence_count(p) == 0);
assert(oakengine_project_can_redo(p) == 1);
assert(oakengine_project_redo(p) == OAKENGINE_OK);
assert(oakengine_project_sequence_count(p) == 1);
assert(oakengine_project_sequence_at(p, 0) == seq);
oakengine_project_free(p);
// Load the saved file into a fresh project.
OakEngineProject *q = oakengine_project_create();
assert(q != NULL);
char err[512];
assert(oakengine_project_load(q, path, err, sizeof(err)) == OAKENGINE_OK);
assert(oakengine_project_is_modified(q) == 0);
assert(oakengine_project_can_undo(q) == 0); // load clears the undo stack
assert(oakengine_project_can_redo(q) == 0);
// Project name derives from the file's base name.
const int qname_len = oakengine_project_name(q, NULL, 0);
assert(qname_len == (int)strlen("roundtrip"));
assert(oakengine_project_name(q, name, sizeof(name)) == qname_len);
assert(strcmp(name, "roundtrip") == 0);
assert(oakengine_project_filename(q, filename, sizeof(filename)) ==
(int)strlen(path));
assert(strcmp(filename, path) == 0);
// The sequence survived the round trip, workarea included (the workarea
// is serialized by ViewerOutput::save_custom()).
assert(oakengine_project_sequence_count(q) == 1);
OakEngineSequence *loaded = oakengine_project_sequence_at(q, 0);
assert(loaded != NULL);
assert(oakengine_sequence_name(loaded, name, sizeof(name)) == 4);
assert(strcmp(name, "Main") == 0);
num = den = -1;
assert(oakengine_sequence_get_frame_rate(loaded, &num, &den) ==
OAKENGINE_OK);
assert(num == 30000 && den == 1001);
assert(oakengine_sequence_track_count(loaded, &video, &audio,
&subtitle) == OAKENGINE_OK);
assert(video == 0 && audio == 0 && subtitle == 0);
assert(oakengine_sequence_workarea_is_enabled(loaded) == 1);
in = out = -1;
assert(oakengine_sequence_get_workarea(loaded, &in, &out) == OAKENGINE_OK);
assert(in == 10 && out == 40);
assert(oakengine_project_footage_count(q) == 0);
// Saving with a NULL path reuses the project's current filename.
assert(oakengine_project_save(q, NULL) == OAKENGINE_OK);
assert(file_exists(path));
oakengine_project_free(q);
// Loading a missing file fails and reports a human-readable reason.
OakEngineProject *r = oakengine_project_create();
assert(r != NULL);
char missing[4096];
make_path(missing, sizeof(missing), "does-not-exist.ove");
assert(oakengine_project_load(r, missing, err, sizeof(err)) ==
OAKENGINE_E_FAILED);
assert(strlen(err) > 0);
// Loading into a project that already has content is rejected.
assert(oakengine_project_new(r) == OAKENGINE_OK);
assert(oakengine_project_load(r, missing, err, sizeof(err)) ==
OAKENGINE_E_STATE);
oakengine_project_free(r);
}
// tests/project_with_footage.ove is a small uncompressed project holding one
// footage item whose stored filename is the relative path "demo.mp4" (the
// real media file sits next to the fixture in tests/).
static void test_footage_fixture(void)
{
char fixture[4096];
const int n = snprintf(fixture, sizeof(fixture),
"%s/tests/project_with_footage.ove",
OAK_TEST_SOURCE_DIR);
assert(n > 0 && (size_t)n < sizeof(fixture));
assert(file_exists(fixture));
OakEngineProject *p = oakengine_project_create();
assert(p != NULL);
char err[512];
assert(oakengine_project_load(p, fixture, err, sizeof(err)) ==
OAKENGINE_OK);
assert(oakengine_project_footage_count(p) == 1);
char filename[256];
assert(oakengine_project_footage_filename(p, 0, filename,
sizeof(filename)) > 0);
assert(strcmp(filename, "demo.mp4") == 0);
// The stored relative path resolves against the project file's
// directory (tests/), where demo.mp4 exists.
assert(oakengine_project_footage_is_online(p, 0) == 1);
// Out-of-range footage indexes report OAKENGINE_E_NOT_FOUND.
assert(oakengine_project_footage_filename(p, 1, filename,
sizeof(filename)) ==
OAKENGINE_E_NOT_FOUND);
assert(oakengine_project_footage_is_online(p, -1) ==
OAKENGINE_E_NOT_FOUND);
assert(oakengine_project_sequence_count(p) == 1);
OakEngineSequence *seq = oakengine_project_sequence_at(p, 0);
assert(seq != NULL);
char name[64];
assert(oakengine_sequence_name(seq, name, sizeof(name)) > 0);
assert(strcmp(name, "Fixture Sequence") == 0);
oakengine_project_free(p);
}
static void test_null_safety(void)
{
oakengine_project_free(NULL);
assert(oakengine_project_new(NULL) == OAKENGINE_E_INVALID);
assert(oakengine_project_load(NULL, "/tmp/x.ove", NULL, 0) ==
OAKENGINE_E_INVALID);
assert(oakengine_project_save(NULL, "/tmp/x.ove") == OAKENGINE_E_INVALID);
assert(oakengine_project_is_modified(NULL) == 0);
assert(oakengine_project_set_modified(NULL, 1) == OAKENGINE_E_INVALID);
assert(oakengine_project_name(NULL, NULL, 0) == OAKENGINE_E_INVALID);
assert(oakengine_project_filename(NULL, NULL, 0) == OAKENGINE_E_INVALID);
assert(oakengine_project_footage_count(NULL) == 0);
assert(oakengine_project_footage_filename(NULL, 0, NULL, 0) ==
OAKENGINE_E_INVALID);
assert(oakengine_project_footage_is_online(NULL, 0) ==
OAKENGINE_E_INVALID);
assert(oakengine_project_can_undo(NULL) == 0);
assert(oakengine_project_can_redo(NULL) == 0);
assert(oakengine_project_undo(NULL) == OAKENGINE_E_INVALID);
assert(oakengine_project_redo(NULL) == OAKENGINE_E_INVALID);
assert(oakengine_project_sequence_count(NULL) == 0);
assert(oakengine_project_sequence_at(NULL, 0) == NULL);
assert(oakengine_sequence_new(NULL, "x") == NULL);
assert(oakengine_sequence_name(NULL, NULL, 0) == OAKENGINE_E_INVALID);
assert(oakengine_sequence_get_length(NULL, NULL) == OAKENGINE_E_INVALID);
assert(oakengine_sequence_get_length_rational(NULL, NULL, NULL) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_get_frame_rate(NULL, NULL, NULL) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_track_count(NULL, NULL, NULL, NULL) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_get_playhead(NULL, NULL) == OAKENGINE_E_INVALID);
assert(oakengine_sequence_set_playhead(NULL, 0) == OAKENGINE_E_INVALID);
assert(oakengine_sequence_get_playhead_seconds(NULL, NULL) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_workarea_is_enabled(NULL) == 0);
assert(oakengine_sequence_get_workarea(NULL, NULL, NULL) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_set_workarea(NULL, 0, 0, 0) ==
OAKENGINE_E_INVALID);
assert(oakengine_sequence_marker_count(NULL) == 0);
assert(oakengine_sequence_marker_at(NULL, 0, NULL, NULL, 0) ==
OAKENGINE_E_INVALID);
}
static void test_shutdown_pairing(void)
{
assert(oakengine_shutdown() == OAKENGINE_OK);
assert(oakengine_init_flags() == 0);
// Shutdown is idempotent.
assert(oakengine_shutdown() == OAKENGINE_OK);
// init may run again after a paired shutdown.
assert(oakengine_init(OAKENGINE_INIT_HEADLESS) == OAKENGINE_OK);
assert(oakengine_init_flags() == OAKENGINE_INIT_HEADLESS);
assert(oakengine_shutdown() == OAKENGINE_OK);
assert(oakengine_init_flags() == 0);
}
int main(void)
{
make_tmpdir();
// Sandbox the config/cache/data locations so the engine never reads or
// writes the real user configuration. The engine's config path comes
// from QStandardPaths::AppDataLocation
// (FileFunctions::get_configuration_location()), which follows
// XDG_DATA_HOME on Linux; the other two are sandboxed for good measure.
#if !defined(_WIN32)
assert(setenv("XDG_CONFIG_HOME", g_tmpdir, 1) == 0);
assert(setenv("XDG_CACHE_HOME", g_tmpdir, 1) == 0);
assert(setenv("XDG_DATA_HOME", g_tmpdir, 1) == 0);
#endif
test_init();
test_project_basics();
test_sequence_and_save_load();
test_footage_fixture();
test_null_safety();
test_shutdown_pairing();
printf("oakengine_init_test: all assertions passed\n");
return 0;
}