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Create a private util method to create blank frame bitmap

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This method will be reused when inserting gaps in
`GapSignalingAssetLoader` in upcoming CL.

PiperOrigin-RevId: 732896566
This commit is contained in:
sheenachhabra 2025-03-03 06:12:07 -08:00 committed by Copybara-Service
parent 1361d569cd
commit 86df7572d2
1 changed files with 13 additions and 6 deletions
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19
libraries/transformer/src/main/java/androidx/media3/transformer/SequenceAssetLoader.java
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@ -65,10 +65,12 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
.setChannelCount(2) .setChannelCount(2)
.build(); .build();
private static final int BLANK_IMAGE_BITMAP_WIDTH = 1;
private static final int BLANK_IMAGE_BITMAP_HEIGHT = 1;
private static final Format BLANK_IMAGE_BITMAP_FORMAT = private static final Format BLANK_IMAGE_BITMAP_FORMAT =
new Format.Builder() new Format.Builder()
.setWidth(1) .setWidth(BLANK_IMAGE_BITMAP_WIDTH)
.setHeight(1) .setHeight(BLANK_IMAGE_BITMAP_HEIGHT)
.setSampleMimeType(MimeTypes.IMAGE_RAW) .setSampleMimeType(MimeTypes.IMAGE_RAW)
.setColorInfo(ColorInfo.SRGB_BT709_FULL) .setColorInfo(ColorInfo.SRGB_BT709_FULL)
.build(); .build();
@ -347,10 +349,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
// Fill video gap with blank frames. // Fill video gap with blank frames.
onMediaItemChanged(C.TRACK_TYPE_VIDEO, /* outputFormat= */ BLANK_IMAGE_BITMAP_FORMAT); onMediaItemChanged(C.TRACK_TYPE_VIDEO, /* outputFormat= */ BLANK_IMAGE_BITMAP_FORMAT);
nonEndedTrackCount.incrementAndGet(); nonEndedTrackCount.incrementAndGet();
Bitmap bitmap = handler.post(() -> insertBlankFrames(getBlankImageBitmap()));
Bitmap.createBitmap(
new int[] {Color.BLACK}, /* width= */ 1, /* height= */ 1, Bitmap.Config.ARGB_8888);
handler.post(() -> insertBlankFrames(bitmap));
} else { } else {
// Generate audio silence in the AudioGraph by signalling null format. // Generate audio silence in the AudioGraph by signalling null format.
onMediaItemChanged(C.TRACK_TYPE_AUDIO, /* outputFormat= */ null); onMediaItemChanged(C.TRACK_TYPE_AUDIO, /* outputFormat= */ null);
@ -359,6 +358,14 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
return sampleConsumer; return sampleConsumer;
} }
private static Bitmap getBlankImageBitmap() {
return Bitmap.createBitmap(
new int[] {Color.BLACK},
BLANK_IMAGE_BITMAP_WIDTH,
BLANK_IMAGE_BITMAP_HEIGHT,
Bitmap.Config.ARGB_8888);
}
private void insertBlankFrames(Bitmap bitmap) { private void insertBlankFrames(Bitmap bitmap) {
SampleConsumerWrapper videoSampleConsumer = SampleConsumerWrapper videoSampleConsumer =
checkNotNull(sampleConsumersByTrackType.get(C.TRACK_TYPE_VIDEO)); checkNotNull(sampleConsumersByTrackType.get(C.TRACK_TYPE_VIDEO));