/**
* Write a media sample to the decoder.
*
* <p>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 boolean writeSample(
final MediaExtractor extractor,
final boolean isSecure,
final long presentationTimeUs,
int flags) {
boolean result = false;
boolean isEos = false;
if (!mAvailableInputBuffers.isEmpty()) {
int index = mAvailableInputBuffers.remove();
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 |= MediaCodec.BUFFER_FLAG_END_OF_STREAM;
}
// 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, flags);
} else {
extractor.getSampleCryptoInfo(cryptoInfo);
mDecoder.queueSecureInputBuffer(index, 0, cryptoInfo, presentationTimeUs, flags);
}
result = true;
}
return result;
}
/**
* Write a media sample to the decoder.
*
* <p>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 input A ByteBuffer containing the input data for one sample. The buffer must be set up
* for reading, with its position set to the beginning of the sample data and its limit set to
* the end of the sample data.
* @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 boolean writeSample(
final ByteBuffer input,
final MediaCodec.CryptoInfo crypto,
final long presentationTimeUs,
final int flags)
throws MediaCodec.CryptoException, WriteException {
boolean result = false;
int size = input.remaining();
// check if we have dequed input buffers available from the codec
if (size > 0 && !mAvailableInputBuffers.isEmpty()) {
int index = mAvailableInputBuffers.remove();
ByteBuffer buffer = mInputBuffers[index];
// we can't write our sample to a lesser capacity input buffer.
if (size > buffer.capacity()) {
throw new MediaCodecWrapper.WriteException(
String.format(
"Insufficient capacity in MediaCodec buffer: "
+ "tried to write %d, buffer capacity is %d.",
input.remaining(), buffer.capacity()));
}
buffer.clear();
buffer.put(input);
// Submit the buffer to the codec for decoding. The presentationTimeUs
// indicates the position (play time) for the current sample.
if (crypto == null) {
mDecoder.queueInputBuffer(index, 0, size, presentationTimeUs, flags);
} else {
mDecoder.queueSecureInputBuffer(index, 0, crypto, presentationTimeUs, flags);
}
result = true;
}
return result;
}
