/**
* Write a media sample to the decoder.
*
* A "sample" here refers to a single atomic access unit in the media stream. The definition
* of "access unit" is dependent on the type of encoding used, but it typically refers to
* a single frame of video or a few seconds of audio. {@link android.media.MediaExtractor}
* extracts data from a stream one sample at a time.
*
* @param extractor Instance of {@link android.media.MediaExtractor} wrapping the media.
*
* @param presentationTimeUs The time, relative to the beginning of the media stream,
* at which this buffer should be rendered.
*
* @param flags Flags to pass to the decoder. See {@link MediaCodec#queueInputBuffer(int,
* int, int, long, int)}
*
* @throws MediaCodec.CryptoException
*/
public bool writeSample(MediaExtractor extractor,
bool isSecure,
long presentationTimeUs,
int flags)
{
bool result = false;
if (mAvailableInputBuffers.Any())
{
int index = mAvailableInputBuffers.Dequeue();
ByteBuffer buffer = mInputBuffers[index];
// reads the sample from the file using extractor into the buffer
int size = extractor.ReadSampleData(buffer, 0);
if (size <= 0)
{
flags |= (int)MediaCodec.BufferFlagEndOfStream;
}
// Submit the buffer to the codec for decoding. The presentationTimeUs
// indicates the position (play time) for the current sample.
if (!isSecure)
{
mDecoder.QueueInputBuffer(index, 0, size, presentationTimeUs, (MediaCodecBufferFlags)flags);
}
else
{
extractor.GetSampleCryptoInfo(sCryptoInfo);
mDecoder.QueueSecureInputBuffer(index, 0, sCryptoInfo, presentationTimeUs, (MediaCodecBufferFlags)flags);
}
result = true;
}
return(result);
}
