PictureTextureSource.java 文件源码

@Override
public Bitmap onLoadBitmap(final Config pBitmapConfig) {
    final Picture picture = this.mPicture;
    if(picture == null) {
        Debug.e("Failed loading Bitmap in PictureTextureSource.");
        return null;
    }

    final Bitmap bitmap = Bitmap.createBitmap(this.mWidth, this.mHeight, pBitmapConfig);
    final Canvas canvas = new Canvas(bitmap);

    final float scaleX = (float)this.mWidth / this.mPicture.getWidth();
    final float scaleY = (float)this.mHeight / this.mPicture.getHeight();
    canvas.scale(scaleX, scaleY, 0, 0);

    picture.draw(canvas);

    return bitmap;
}