conco/OpenMaidEngine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 3 Wiki Activity

Implement movie mask transition opcode

Browse Source
This commit is contained in:
gamer147
2026-07-29 16:01:00 -04:00
parent 12af952b77
commit 3378abdeca
18 changed files with 573 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
godot/FfmpegMovieDecoder.cs
View File

@@ -89,6 +89,7 @@ internal sealed class FfmpegMovieDecoder : IMovieDecoder
private readonly AutoResetEvent _audioSpace = new(false);
private readonly int _maximumQueuedAudioFrames;
private readonly long _initialPositionMs;
private readonly long? _presentationDurationMs;
private RgbaImage? _latestFrame;
private volatile bool _completed;
private volatile bool _videoTimelineCompleted;
@@ -116,17 +117,21 @@ internal sealed class FfmpegMovieDecoder : IMovieDecoder
public MovieAudioInfo? AudioInfo { get; }
public bool AudioDecodingCompleted => _audioDecodingCompleted;
public FfmpegMovieDecoder(MoviePayload movie, long initialPositionMs = 0)
: this(new FfmpegMovieSession(movie), null, initialPositionMs) { }
public FfmpegMovieDecoder(
MoviePayload movie, long initialPositionMs = 0, long? presentationDurationMs = null)
: this(new FfmpegMovieSession(movie), null, initialPositionMs, presentationDurationMs) { }
internal FfmpegMovieDecoder(IFfmpegFrameSource source, IMoviePacingClock? clock,
long initialPositionMs = 0)
long initialPositionMs = 0, long? presentationDurationMs = null)
{
_source = source ?? throw new ArgumentNullException(nameof(source));
_initialPositionMs = Math.Clamp(
initialPositionMs,
0,
Math.Max(0, source.Info.StopTimeMs - 1));
_presentationDurationMs = presentationDurationMs is >= 0
? Math.Max(0, presentationDurationMs.Value)
: null;
try
{
if (_initialPositionMs > 0)
@@ -254,10 +259,11 @@ internal sealed class FfmpegMovieDecoder : IMovieDecoder
{
if (decodedFrames == 0)
throw new InvalidDataException("FFmpeg stream ended before producing a video frame");
long completionTime = PresentationDeadline(
Math.Max(_source.Info.StopTimeMs,
lastTimestamp + FrameIntervalMilliseconds(_source.Info)),
firstTimestamp);
long completionTime = _presentationDurationMs
?? PresentationDeadline(
Math.Max(_source.Info.StopTimeMs,
lastTimestamp + FrameIntervalMilliseconds(_source.Info)),
firstTimestamp);
if (_clock.WaitUntil(completionTime, _cancel))
{
_videoTimelineCompleted = true;
@@ -432,7 +438,11 @@ internal sealed class FfmpegMovieDecoder : IMovieDecoder
// stream's mux timestamp origin. DirectShow presents the video's first sample as video time zero;
// retaining the absolute mux offset here would freeze that sample until the audio clock caught up.
// Preserve every decoded frame and its cadence, but rebase the video stream to its first sample.
return Math.Max(0, sourceTimestamp - firstVideoTimestamp);
long sourceElapsed = Math.Max(0, sourceTimestamp - firstVideoTimestamp);
if (_presentationDurationMs is not { } duration
|| _source.Info.StopTimeMs <= 0)
return sourceElapsed;
return checked(sourceElapsed * duration / _source.Info.StopTimeMs);
}
public void Dispose()
@@ -454,6 +464,7 @@ internal sealed class FfmpegMovieDecoder : IMovieDecoder
internal sealed class FfmpegMovieDecoderFactory : IMovieDecoderFactory
{
public IMovieDecoder Open(MoviePayload movie, long initialPositionMs = 0)
=> new FfmpegMovieDecoder(movie, initialPositionMs);
public IMovieDecoder Open(
MoviePayload movie, long initialPositionMs = 0, long? presentationDurationMs = null)
=> new FfmpegMovieDecoder(movie, initialPositionMs, presentationDurationMs);
}