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fix: make BitmapOverlay constructor public

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So developers can subclass it
#minor-release

PiperOrigin-RevId: 586638134
This commit is contained in:
tofunmi 2023-11-30 04:51:36 -08:00 committed by Copybara-Service
parent a2a4ef5f40
commit 5b3491082b
1 changed files with 49 additions and 49 deletions
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98
libraries/effect/src/main/java/androidx/media3/effect/BitmapOverlay.java
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@ -47,7 +47,7 @@ public abstract class BitmapOverlay extends TextureOverlay {
private int lastBitmapGenerationId;
private @Nullable Bitmap lastBitmap;
/* package */ BitmapOverlay() {
public BitmapOverlay() {
float[] temp = GlUtil.create4x4IdentityMatrix();
Matrix.scaleM(temp, /* offset */ 0, /* x= */ 1f, /* y= */ -1f, /* z= */ 1f);
flipVerticallyMatrix = temp;
@ -55,54 +55,6 @@ public abstract class BitmapOverlay extends TextureOverlay {
lastTextureId = C.INDEX_UNSET;
}
/**
* Returns the overlay bitmap displayed at the specified timestamp.
*
* @param presentationTimeUs The presentation timestamp of the current frame, in microseconds.
* @throws VideoFrameProcessingException If an error occurs while processing or drawing the frame.
*/
public abstract Bitmap getBitmap(long presentationTimeUs) throws VideoFrameProcessingException;
/**
* {@inheritDoc}
*
* <p>Gets the width and height of the cached bitmap.
*
* @param presentationTimeUs The presentation timestamp of the current frame, in microseconds.
*/
@Override
public Size getTextureSize(long presentationTimeUs) {
return new Size(checkNotNull(lastBitmap).getWidth(), checkNotNull(lastBitmap).getHeight());
}
@Override
public int getTextureId(long presentationTimeUs) throws VideoFrameProcessingException {
Bitmap bitmap = getBitmap(presentationTimeUs);
int generationId = bitmap.getGenerationId();
if (bitmap != lastBitmap || generationId != lastBitmapGenerationId) {
lastBitmap = bitmap;
lastBitmapGenerationId = generationId;
try {
if (lastTextureId == C.INDEX_UNSET) {
lastTextureId = GlUtil.generateTexture();
}
GlUtil.setTexture(lastTextureId, bitmap);
} catch (GlUtil.GlException e) {
throw new VideoFrameProcessingException(e);
}
}
return lastTextureId;
}
@Override
public float[] getVertexTransformation(long presentationTimeUs) {
// Whereas the Android system uses the top-left corner as (0,0) of the
// coordinate system, OpenGL uses the bottom-left corner as (0,0), so the
// texture gets flipped. Flip the texture vertically to ensure the
// orientation of the output is correct.
return flipVerticallyMatrix;
}
/**
* Creates a {@link BitmapOverlay} that shows the {@code overlayBitmap} in the same position and
* size throughout the whole video.
@ -179,6 +131,54 @@ public abstract class BitmapOverlay extends TextureOverlay {
};
}
/**
* Returns the overlay bitmap displayed at the specified timestamp.
*
* @param presentationTimeUs The presentation timestamp of the current frame, in microseconds.
* @throws VideoFrameProcessingException If an error occurs while processing or drawing the frame.
*/
public abstract Bitmap getBitmap(long presentationTimeUs) throws VideoFrameProcessingException;
/**
* {@inheritDoc}
*
* <p>Gets the width and height of the cached bitmap.
*
* @param presentationTimeUs The presentation timestamp of the current frame, in microseconds.
*/
@Override
public Size getTextureSize(long presentationTimeUs) {
return new Size(checkNotNull(lastBitmap).getWidth(), checkNotNull(lastBitmap).getHeight());
}
@Override
public int getTextureId(long presentationTimeUs) throws VideoFrameProcessingException {
Bitmap bitmap = getBitmap(presentationTimeUs);
int generationId = bitmap.getGenerationId();
if (bitmap != lastBitmap || generationId != lastBitmapGenerationId) {
lastBitmap = bitmap;
lastBitmapGenerationId = generationId;
try {
if (lastTextureId == C.INDEX_UNSET) {
lastTextureId = GlUtil.generateTexture();
}
GlUtil.setTexture(lastTextureId, bitmap);
} catch (GlUtil.GlException e) {
throw new VideoFrameProcessingException(e);
}
}
return lastTextureId;
}
@Override
public float[] getVertexTransformation(long presentationTimeUs) {
// Whereas the Android system uses the top-left corner as (0,0) of the
// coordinate system, OpenGL uses the bottom-left corner as (0,0), so the
// texture gets flipped. Flip the texture vertically to ensure the
// orientation of the output is correct.
return flipVerticallyMatrix;
}
@Override
public void release() throws VideoFrameProcessingException {
super.release();