private bool FeedDataVideoFUA(Stream pData, uint dataLength, uint processedLength, uint totalLength, uint absoluteTimestamp)
{
uint sentAmount = 0;
while (sentAmount != dataLength)
{
var chunkSize = dataLength - sentAmount;
chunkSize = chunkSize < _maxRTPPacketSize ? chunkSize : _maxRTPPacketSize;
//1. Flags
_videoData.Buffers[0][1] = processedLength + sentAmount + chunkSize == totalLength ?(byte)0xe1 : (byte)0x61;
//2. counter
_videoData.Buffers[0].Write(2, _videoCounter);
_videoCounter++;
//3. Timestamp
_videoData.Buffers[0].Write(4, BaseConnectivity.ToRTPTS(absoluteTimestamp, 90000));
if (chunkSize == totalLength)
{
//4. No chunking
Array.Resize(ref _videoData.Buffers[0], 12);
Array.Resize(ref _videoData.Buffers[1], (int)chunkSize);
pData.Read(_videoData.Buffers[1], 0, (int)chunkSize);
}
else
{
//5. Chunking
Array.Resize(ref _videoData.Buffers[0], 14);
if (processedLength + sentAmount == 0)
{
//6. First chunk
var firstByte = (byte)pData.ReadByte();
_videoData.Buffers[0][12] = (byte)(firstByte & 0xe0 | (byte)NaluType.NALU_TYPE_FUA);
_videoData.Buffers[0][13] = (byte)(firstByte & 0x1f | 0x80);
Array.Resize(ref _videoData.Buffers[1], (int)chunkSize - 1);
pData.Read(_videoData.Buffers[1], 0, (int)chunkSize - 1);
}
else
{
_videoData.Buffers[0][13] &= 0x1f;
if (processedLength + sentAmount + chunkSize == totalLength)
{
//7. Last chunk
_videoData.Buffers[0][13] |= 0x40;
}
Array.Resize(ref _videoData.Buffers[1], (int)chunkSize);
pData.Read(_videoData.Buffers[1], 0, (int)chunkSize);
}
}
Connectivity.FeedVideoData(ref _videoData, absoluteTimestamp);
sentAmount += chunkSize;
}
return(true);
}
private bool FeedDataAudioMPEG4Generic_aggregate(Stream pData, uint dataLength, uint processedLength, uint totalLength, uint absoluteTimestamp)
{
//1. We only support frame-by-frame approach
if (dataLength != totalLength)
{
WARN("Chunked mode not yet supported");
return(true);
}
//2. Test if we need to send what we have so far
if (((14 + _audioData.Buffers[1].Length + _audioBuffer.GetAvaliableByteCounts() + 2 + dataLength - 7) > _maxRTPPacketSize) ||
(_audioData.Buffers[1].Length == 16))
{
//3. counter
_audioData.Buffers[0].Write(2, AudioCounter);
AudioCounter++;
//4. Timestamp
_audioData.Buffers[0].Write(4,
BaseConnectivity.ToRTPTS(absoluteTimestamp,
Capabilities.Aac._sampleRate));
//6. put the actual buffer
Array.Resize(ref _audioData.Buffers[2], (int)_audioBuffer.GetAvaliableByteCounts());
_audioBuffer.Read(_audioData.Buffers[2], 0, _audioData.Buffers[2].Length);
_audioData.Buffers[0].Write(12, (ushort)(_audioData.Buffers[1].Length * 8));
Connectivity.FeedAudioData(ref _audioData, absoluteTimestamp);
Array.Resize(ref _audioData.Buffers[1], 0);
}
//3. AU-Header
var auHeader = (dataLength - 7) << 3;
auHeader = auHeader | (byte)(_audioData.Buffers[1].Length / 2);
Array.Resize(ref _audioData.Buffers[1], _audioData.Buffers[1].Length + 2);
_audioData.Buffers[1].Write(_audioData.Buffers[1].Length - 2, (ushort)auHeader);
//4. Save the buffer
pData.Position += 7;
pData.CopyDataTo(_audioBuffer, (int)(dataLength - 7));
pData.Position -= 7;
return(true);
}
