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@josemigallas
Last active July 15, 2016 08:12
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public class CroppableTextureView extends TextureView implements TextureView.SurfaceTextureListener {
private final int videoRes;
private MediaPlayer player;
private int videoHeight;
private int videoWidth;
public CroppableTextureView(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.CroppableTextureView, 0, 0);
try {
videoRes = ta.getResourceId(R.styleable.CroppableTextureView_rawRes, 0);
} finally {
ta.recycle();
}
init();
}
private void init() {
if (videoRes == 0) {
throw new RuntimeException("Must specify a video raw resource");
}
setSurfaceTextureListener(this);
}
private void calculateVideoSize() {
MediaMetadataRetriever metaRetriever = new MediaMetadataRetriever();
AssetFileDescriptor fileDescriptor = getResources().openRawResourceFd(videoRes);
metaRetriever.setDataSource(
fileDescriptor.getFileDescriptor(),
fileDescriptor.getStartOffset(),
fileDescriptor.getLength()
);
String height = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
String width = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
videoHeight = Integer.parseInt(height);
videoWidth = Integer.parseInt(width);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) {
calculateVideoSize();
centerCrop(width, height, videoWidth, videoHeight);
player = MediaPlayer.create(getContext(), videoRes);
player.setSurface(new Surface(surfaceTexture));
player.setLooping(true);
player.start();
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
if (player != null) {
player.stop();
player.release();
player = null;
}
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
public void centerCrop(int screenWidth, int screenHeight, int videoWidth, int videoHeight) {
Matrix matrix = new Matrix();
float screenRatio = (float) screenWidth / screenHeight;
float videoRatio = (float) videoWidth / videoHeight;
if (screenRatio < videoRatio) {
float heightScale = (float) screenHeight / videoHeight;
float newWidth = videoWidth * heightScale;
float widthScale = newWidth / screenWidth;
float offsetX = -(newWidth - screenWidth) / 2;
getTransform(matrix);
matrix.setScale(widthScale, 1);
matrix.postTranslate(offsetX, 0);
} else {
float widthScale = (float) screenWidth / videoWidth;
float newHeight = videoHeight * widthScale;
float heightScale = newHeight / screenHeight;
float offsetY = -(newHeight - screenHeight) / 2;
getTransform(matrix);
matrix.setScale(1, heightScale);
matrix.postTranslate(0, offsetY);
}
setTransform(matrix);
}
}
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