loliball/media
1
0
Fork 0
mirror of https://github.com/androidx/media.git synced 2025-04-30 06:46:50 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Suppress framework muxer lint warning

Browse Source 
We need to access internal state to work around resources not being released on
old API versions. Add a reference to the bug about this and suppress the lint
warning.

#minor-release

PiperOrigin-RevId: 430190794
This commit is contained in:
andrewlewis 2022-02-22 13:46:05 +00:00 committed by Ian Baker
parent 42340bf5ac
commit 0490839fce
1 changed files with 29 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
libraries/transformer/src/main/java/androidx/media3/transformer/FrameworkMuxer.java
View File

@ -209,24 +209,8 @@ import java.nio.ByteBuffer;
isStarted = false; isStarted = false;
try { try {
mediaMuxer.stop(); stopMuxer(mediaMuxer);
} catch (RuntimeException e) { } catch (RuntimeException e) {
if (SDK_INT < 30) {
// Set the muxer state to stopped even if mediaMuxer.stop() failed so that
// mediaMuxer.release() doesn't attempt to stop the muxer and therefore doesn't throw the
// same exception without releasing its resources. This is already implemented in MediaMuxer
// from API level 30.
try {
Field muxerStoppedStateField = MediaMuxer.class.getDeclaredField("MUXER_STATE_STOPPED");
muxerStoppedStateField.setAccessible(true);
int muxerStoppedState = castNonNull((Integer) muxerStoppedStateField.get(mediaMuxer));
Field muxerStateField = MediaMuxer.class.getDeclaredField("mState");
muxerStateField.setAccessible(true);
muxerStateField.set(mediaMuxer, muxerStoppedState);
} catch (Exception reflectionException) {
// Do nothing.
}
}
// It doesn't matter that stopping the muxer throws if the transformation is being cancelled. // It doesn't matter that stopping the muxer throws if the transformation is being cancelled.
if (!forCancellation) { if (!forCancellation) {
throw new MuxerException("Failed to stop the muxer", e); throw new MuxerException("Failed to stop the muxer", e);
@ -254,4 +238,32 @@ import java.nio.ByteBuffer;
throw new IllegalArgumentException("Unsupported output MIME type: " + mimeType); throw new IllegalArgumentException("Unsupported output MIME type: " + mimeType);
} }
} }
// Accesses MediaMuxer state via reflection to ensure that muxer resources can be released even
// if stopping fails.
@SuppressLint("PrivateApi")
private static void stopMuxer(MediaMuxer mediaMuxer) {
try {
mediaMuxer.stop();
} catch (RuntimeException e) {
if (SDK_INT < 30) {
// Set the muxer state to stopped even if mediaMuxer.stop() failed so that
// mediaMuxer.release() doesn't attempt to stop the muxer and therefore doesn't throw the
// same exception without releasing its resources. This is already implemented in MediaMuxer
// from API level 30. See also b/80338884.
try {
Field muxerStoppedStateField = MediaMuxer.class.getDeclaredField("MUXER_STATE_STOPPED");
muxerStoppedStateField.setAccessible(true);
int muxerStoppedState = castNonNull((Integer) muxerStoppedStateField.get(mediaMuxer));
Field muxerStateField = MediaMuxer.class.getDeclaredField("mState");
muxerStateField.setAccessible(true);
muxerStateField.set(mediaMuxer, muxerStoppedState);
} catch (Exception reflectionException) {
// Do nothing.
}
}
// Rethrow the original error.
throw e;
}
}
} }