- Refactor sorting of clips & effects, and only sort these arrays when the arrays change (instead of each call to GetFrame)
- Cache max timeline duration, and make Timeline::GetMaxTime() thread safe
- New multi-threaded unit tests, which are designed to verify no seg faults on multi-threaded calls to Timeline::GetFrame(), Timeline::AddClip(), and Timeline::RemoveClip()
- New public Timeline::SortTimeline() method which is called by child Clips automatically, when certain properties are changed
For example, if a video had only 10 frames (video_length), timeline would calculate the start_frame as 1, and end_frame as 11, which is incorrect. It should use start_frame as 1, end_frame as 10.
- Tweaking GetSmallestFrame to not use an additional mutex.
- Replace 2 mutex on Timeline::GetFrame with 1 mutex.
- Remove mutex from Timeline::ClearAllCache.
- Slow down loop on video cache thread.
- Protect audioThread::Seek() if missing a source.
- Rearrange StopPlayback to always stop the videoCache thread first.
- Support different speeds (-1X, 2X, 4X, etc...)
- Clamp getFrame between 1 and timeline length
- Support rewind using new timing code
- Caching in both directions (based on previous speed)
- Removing mutex from Timeline::GetFrame (cached path)
- Caching supports actual speed now
- Bust cache and trigger pre-roll if we encounter too many uncached frames. This will re-sync the video + audio threads.
- Sleep less in cache loop / Adjusting min frames to 24 (trial and error). Too few and backwards playback suffers. Too many and all playback waits.
