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Make sure effects are applied on the correct frame

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The events happens in the following order, assuming two media items:

1. First media item is fully decoded, record the last frame's pts
  - Note frame processing is still ongoing for this media item
2. Renderer sends `onOutputFormatChanged()` to signal the second media item
3. **Block sending the frames of the second media item to the `VideoSink`**
4. Frame processing finishes on the first media item
5. The last frame of the first media item is released
6. **Reconfigure the `VideoSink` to apply new effects**
7. **Start sending the frames of the second media item to the `VideoSink`**

This CL implements the **events in bold**

PiperOrigin-RevId: 576098798
This commit is contained in:
claincly 2023-10-24 04:43:14 -07:00 committed by Copybara-Service
parent e8adbd9075
commit 1fc34676d9
1 changed files with 38 additions and 1 deletions
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39
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/video/CompositingVideoSinkProvider.java
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@ -215,6 +215,9 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
// TODO b/292111083 - Remove the field and trigger the callback on every video size change.
private boolean onVideoSizeChangedCalled;
private boolean hasRegisteredFirstInputStream;
private boolean inputStreamRegistrationPending;
private long lastFramePresentationTimeUs;
/** Creates a new instance. */
public VideoSinkImpl(
@ -283,6 +286,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
Util.SDK_INT < 21 && sourceFormat.rotationDegrees != 0
? ScaleAndRotateAccessor.createRotationEffect(sourceFormat.rotationDegrees)
: null;
lastFramePresentationTimeUs = C.TIME_UNSET;
}
// VideoSink impl
@ -294,6 +298,8 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
streamOffsets.clear();
handler.removeCallbacksAndMessages(/* token= */ null);
renderedFirstFrame = false;
lastFramePresentationTimeUs = C.TIME_UNSET;
hasRegisteredFirstInputStream = false;
if (registeredLastFrame) {
registeredLastFrame = false;
processedLastFrame = false;
@ -317,7 +323,17 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
throw new UnsupportedOperationException("Unsupported input type " + inputType);
}
this.inputFormat = format;
maybeRegisterInputStream();
if (!hasRegisteredFirstInputStream) {
maybeRegisterInputStream();
hasRegisteredFirstInputStream = true;
// If an input stream registration is pending and seek to another MediaItem, execution
// reaches here before registerInputFrame(), resetting inputStreamRegistrationPending to
// avoid registering the same input stream again in registerInputFrame().
inputStreamRegistrationPending = false;
} else {
inputStreamRegistrationPending = true;
}
if (registeredLastFrame) {
registeredLastFrame = false;
@ -349,6 +365,20 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
@Override
public long registerInputFrame(long framePresentationTimeUs, boolean isLastFrame) {
checkState(videoFrameProcessorMaxPendingFrameCount != C.LENGTH_UNSET);
// An input stream is fully decoded, wait until all of its frames are released before queueing
// input frame from the next input stream.
if (inputStreamRegistrationPending) {
if (lastFramePresentationTimeUs == C.TIME_UNSET) {
// A seek took place after signaling a new input stream, but the input stream is yet to be
// registered.
maybeRegisterInputStream();
inputStreamRegistrationPending = false;
} else {
return C.TIME_UNSET;
}
}
if (videoFrameProcessor.getPendingInputFrameCount()
>= videoFrameProcessorMaxPendingFrameCount) {
return C.TIME_UNSET;
@ -356,6 +386,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
if (!videoFrameProcessor.registerInputFrame()) {
return C.TIME_UNSET;
}
lastFramePresentationTimeUs = framePresentationTimeUs;
// The sink takes in frames with monotonically increasing, non-offset frame
// timestamps. That is, with two ten-second long videos, the first frame of the second video
// should bear a timestamp of 10s seen from VideoFrameProcessor; while in ExoPlayer, the
@ -416,6 +447,12 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
: frameRenderTimeNs,
isLastFrame);
if (framePresentationTimeUs == lastFramePresentationTimeUs
&& inputStreamRegistrationPending) {
maybeRegisterInputStream();
inputStreamRegistrationPending = false;
}
maybeNotifyVideoSizeChanged(bufferPresentationTimeUs);
}
}