public int Read(byte[] buffer, int offset, int length)
{
int min = 0;
try
{
if (mBuffer == null)
{
while (!Thread.Interrupted() && !mClosed)
{
mIndex = mMediaCodec.DequeueOutputBuffer(mBufferInfo, 500000);
if (mIndex >= 0)
{
//Log.d(TAG,"Index: "+mIndex+" Time: "+mBufferInfo.presentationTimeUs+" size: "+mBufferInfo.size);
mBuffer = mBuffers[mIndex];
mBuffer.Position(0);
break;
}
else if (mIndex == (int)MediaCodec.InfoOutputBuffersChanged)
{
mBuffers = mMediaCodec.GetOutputBuffers();
}
else if (mIndex == (int)MediaCodec.InfoOutputFormatChanged)
{
mMediaFormat = mMediaCodec.GetOutputFormat(mIndex);
Log.i(TAG, mMediaFormat.ToString());
}
else if (mIndex == (int)MediaCodec.InfoTryAgainLater)
{
Log.v(TAG, "No buffer available...");
//return 0;
}
else
{
Log.e(TAG, "Message: " + mIndex);
//return 0;
}
}
}
if (mClosed)
{
throw new IOException("This InputStream was closed");
}
min = length < mBufferInfo.Size - mBuffer.Position() ? length : mBufferInfo.Size - mBuffer.Position();
mBuffer.Get(buffer, offset, min);
if (mBuffer.Position() >= mBufferInfo.Size)
{
mMediaCodec.ReleaseOutputBuffer(mIndex, false);
mBuffer = null;
}
}
catch (RuntimeException e)
{
e.PrintStackTrace();
}
return(min);
}
override public void OnOutputBufferAvailable(MediaCodec mc, int outputBufferId, BufferInfo info)
{
ByteBuffer outputBuffer = mDecoder.GetOutputBuffer(outputBufferId);
MediaFormat bufferFormat = mDecoder.GetOutputFormat(outputBufferId); // option A
Console.WriteLine("decoded buffer format:" + bufferFormat.ToString());
// bufferFormat is equivalent to mOutputFormat
// outputBuffer is ready to be processed or rendered.
Console.WriteLine("OnOutputBufferAvailable: outputBufferId = " + outputBufferId.ToString());
byte[] decoded_data = new byte[info.Size];
outputBuffer.Position(info.Offset);
outputBuffer.Get(decoded_data, 0, info.Size);
mDecoder.ReleaseOutputBuffer(outputBufferId, false);
Console.WriteLine("call OnDecodeFrame from decoder!");
Console.WriteLine("bufferFormat.getInteger(MediaFormat.KeyWidth)=" + bufferFormat.GetInteger(MediaFormat.KeyWidth).ToString() + " bufferFormat.getInteger(MediaFormat.KeyHeight)=" + bufferFormat.GetInteger(MediaFormat.KeyHeight).ToString());
mCallbackObj.OnDecodeFrame(decoded_data, bufferFormat.GetInteger(MediaFormat.KeyWidth), bufferFormat.GetInteger(MediaFormat.KeyHeight), bufferFormat.GetInteger(MediaFormat.KeyColorFormat));
}