private List<IGlFilter> createGlFilters(SourceMedia sourceMedia,
TargetVideoTrack targetTrack,
float overlayWidth,
PointF position,
float rotation)
{
List<IGlFilter> glFilters = null;
if (targetTrack != null && targetTrack.overlay != null)
{
try
{
Bitmap bitmap = BitmapFactory.DecodeStream(context.ContentResolver.OpenInputStream(targetTrack.overlay));
if (bitmap != null)
{
float overlayHeight;
VideoTrackFormat sourceVideoTrackFormat = (VideoTrackFormat)sourceMedia.tracks[targetTrack.sourceTrackIndex];
if (sourceVideoTrackFormat.rotation == 90 || sourceVideoTrackFormat.rotation == 270)
{
float overlayWidthPixels = overlayWidth * sourceVideoTrackFormat.height;
float overlayHeightPixels = overlayWidthPixels * bitmap.Height / bitmap.Width;
overlayHeight = overlayHeightPixels / sourceVideoTrackFormat.width;
}
else
{
float overlayWidthPixels = overlayWidth * sourceVideoTrackFormat.width;
float overlayHeightPixels = overlayWidthPixels * bitmap.Height / bitmap.Width;
overlayHeight = overlayHeightPixels / sourceVideoTrackFormat.height;
}
PointF size = new PointF(overlayWidth, overlayHeight);
IGlFilter filter = TransformationUtil.createGlFilter(context,
targetTrack.overlay,
size,
position,
rotation);
if (filter != null)
{
glFilters = new List<IGlFilter>();
glFilters.Add(filter);
}
}
}
catch (System.Exception err)
{
System.Diagnostics.Debug.WriteLine($"Failed to extract audio track metadata: {err.Message}");
}
}
return glFilters;
}
public static IGlFilter createGlFilter(Context context, Uri overlayUri, PointF size, PointF position, float rotation)
{
IGlFilter filter = null;
Transform transform = new Transform(size, position, rotation);
try
{
if (TextUtils.Equals(context.ContentResolver.GetType(overlayUri), "image/gif"))
{
//IAnimationFrameProvider x;
/*
* ContentResolver contentResolver = context.ApplicationContext.ContentResolver;
* InputStream inputStream = contentResolver.OpenInputStream(overlayUri);
* BitmapPool bitmapPool = new LruBitmapPool(10);
* GifBitmapProvider gifBitmapProvider = new GifBitmapProvider(bitmapPool);
* GifDecoder gifDecoder = new StandardGifDecoder(gifBitmapProvider);
* gifDecoder.read(inputStream, (int)TranscoderUtils.getSize(context, overlayUri));
*
* AnimationFrameProvider animationFrameProvider = new AnimationFrameProvider() {
* @Override
* public int getFrameCount()
* {
* return gifDecoder.getFrameCount();
* }
*
* @Nullable
* @Override
* public Bitmap getNextFrame()
* {
* return gifDecoder.getNextFrame();
* }
*
* @Override
* public long getNextFrameDurationNs()
* {
* return TimeUnit.MILLISECONDS.toNanos(gifDecoder.getNextDelay());
* }
*
* @Override
* public void advance()
* {
* gifDecoder.advance();
* }
* };
* filter = new FrameSequenceAnimationOverlayFilter(animationFrameProvider, transform);
*/
}
else
{
filter = new BitmapOverlayFilter(context.ApplicationContext, overlayUri, transform);
}
}
catch (System.Exception err)
{
System.Diagnostics.Debug.WriteLine($"Failed to create a GlFilter: {err.Message}");
}
return(filter);
}