protected override void DoProcessFrame(VideoFrame frame, VideoBuffer inputBuffer)
{
if (frame.Timestamp != _LastTimestamp)
{
_KeyFrameIntervalCounter++;
_LastTimestamp = frame.Timestamp;
}
if (_KeyFrameIntervalCounter == KeyFrameInterval)
{
Console.Error.WriteLine("Raising keyframe request.");
RaiseControlFrame(new FirControlFrame(new FirEntry(GetCcmSequenceNumber())));
_KeyFrameIntervalCounter = 0;
}
if (!WaitForKeyFrame)
{
_Ready = true;
}
if (!_Ready)
{
// clone to check keyframe since H.264 keyframe test on
// packetized data buffers is destructive in 1.9.x
var inputBufferClone = inputBuffer.Clone();
var dataBufferClones = new DataBuffer[inputBuffer.DataBuffers.Length];
for (var i = 0; i < dataBufferClones.Length; i++)
{
dataBufferClones[i] = DataBuffer.Wrap(inputBuffer.DataBuffers[i].ToArray());
}
inputBufferClone.DataBuffers = dataBufferClones;
if (inputBufferClone.IsKeyFrame)
{
_Ready = true;
}
}
if (_Ready)
{
var rtpHeaders = inputBuffer.RtpHeaders;
var rtpPayloads = inputBuffer.DataBuffers;
for (var i = 0; i < rtpHeaders.Length; i++)
{
var rtpHeader = rtpHeaders[i];
if (rtpHeader == null)
{
rtpHeader = new RtpPacketHeader();
}
if (rtpHeader.SequenceNumber == -1)
{
rtpHeader.SequenceNumber = (int)(_SequenceNumber++ % (ushort.MaxValue + 1));
}
if (rtpHeader.Timestamp == -1)
{
rtpHeader.Timestamp = frame.Timestamp % ((long)uint.MaxValue + 1);
}
_Writer.Write(new RtpPacket(rtpPayloads[i], rtpHeader.SequenceNumber, rtpHeader.Timestamp, rtpHeader.Marker)
{
PayloadType = PayloadType,
SynchronizationSource = SynchronizationSource
});
}
}
}