/// <summary>
/// newPacket is how RtpListener sends an incoming RtpPacket who's SSRC matches this
/// RtpStream into the RtpStream's queue for processing
///
/// This method assumes there is only one thread calling newPacket
/// </summary>
internal virtual void ProcessPacket(RtpPacket packet)
{
#region Mark this stream and its participant as not stale
stale = 0;
// TODO - trade SdesData for Participant JVE
// TODO - mark participant or we will destory and recreate streams JVE
// if (participant != null)
// {
// participant.stale = 0;
// }
#endregion
// Mark raw packet received
packetsLost += LostPackets(ref maxSeq, packet.Sequence);
packetsReceived++;
bytesReceived += packet.PayloadSize;
#region Reject Late Packets
uint packetTS = packet.TimeStamp;
uint deltaTS = 0;
if (packetsReceived != 1) // Skip this test if we're in a startup state
{
deltaTS = unchecked (packetTS - currentFrameTS);
if (deltaTS > HALF_UINT_MAX)
{
packetsReceivedLate++;
returnBufferHandler(packet.ReleaseBuffer());
return;
}
}
#endregion
// A packet from a future frame has been received, so send out the incomplete current frame
// Note we cannot check for deltaTS == 1 because we may miss more than 1 frame
if (deltaTS > 0)
{
if (frame != null)
{
frame.Dispose();
frame = null;
}
RtpRetransmit.FrameIncomplete(this, (int)deltaTS);
}
// We're receiving the first packet for a new frame
if (frame == null)
{
frame = new RtpFrame(packet.PacketsInFrame, packetTS, returnBufferHandler);
currentFrameTS = packetTS;
}
try
{
// Store the packet
frame[packet.FrameIndex] = packet;
}
catch (DuplicatePacketException)
{
// Note: We have already updated the performance counters for these bytes / this packet
// and we are rejecting it now. So pcs could be higher than expected.
eventLog.WriteEntry("Duplicate packet received in RtpStream - " + packet.ToString(),
EventLogEntryType.Error, (int)RtpEL.ID.DuplicatePacketReceived);
return;
}
// We've received the correct number of data packets, so we can now re-create the frame
if (frame.Complete)
{
// Raise the event
OnFrameReceivedEvent(frame.Data);
// Clean up frame - like returning packets to RtpListener
frame.Dispose();
frame = null;
// CXP RtpSenders increment by 1, to do otherwise is a signal from the Sender
// which means the stream needs to know what the signal means
currentFrameTS++;
}
}
private void DisposeFrame()
{
frame.Dispose();
frame = null;
}
private void InitializeFrame()
{
InitializePacketSize();
frame = new RtpFrame((uint)packetSize, payloadType, ts);
}
private void InitializeFrame()
{
InitializePacketSize();
frame = new RtpFrame((uint)packetSize, payloadType, ts);
}
private void DisposeFrame()
{
frame.Dispose();
frame = null;
}
/// <summary>
/// newPacket is how RtpListener sends an incoming RtpPacket who's SSRC matches this
/// RtpStream into the RtpStream's queue for processing
///
/// This method assumes there is only one thread calling newPacket
/// </summary>
internal virtual void ProcessPacket(RtpPacket packet)
{
int frame_Index = 0;
int packets_Size = 0;
#region Mark this stream and its participant as not stale
stale = 0;
// TODO - trade SdesData for Participant JVE
// TODO - mark participant or we will destory and recreate streams JVE
// if (participant != null)
// {
// participant.stale = 0;
// }
#endregion
// Mark raw packet received
packetsLost += LostPackets(ref maxSeq, packet.Sequence);
packetsReceived++;
bytesReceived += packet.PayloadSize;
#region Reject Late Packets
uint packetTS = packet.TimeStamp;
uint deltaTS = 0;
if (packetsReceived != 1) // Skip this test if we're in a startup state
{
deltaTS = unchecked(packetTS - currentFrameTS);
if (deltaTS > HALF_UINT_MAX)
{
packetsReceivedLate++;
returnBufferHandler(packet.ReleaseBuffer());
return;
}
}
#endregion
// A packet from a future frame has been received, so send out the incomplete current frame
// Note we cannot check for deltaTS == 1 because we may miss more than 1 frame
if (deltaTS > 0)
{
if(frame != null)
{
frame.Dispose();
frame = null;
}
RtpRetransmit.FrameIncomplete(this, (int)deltaTS);
}
// We're receiving the first packet for a new frame
if (frame == null)
{
frame = new RtpFrame(128, packetTS, returnBufferHandler);
currentFrameTS = packetTS;
}
try
{
// Store the packet
// payload type is jpeg
frame_Index = packet.JpgOffset/packet.MaxPayloadSize;
frame.ApproximatePacketsInFrame((uint)frame_Index + 1);
frame[frame_Index] = packet;
}
catch(DuplicatePacketException)
{
// Note: We have already updated the performance counters for these bytes / this packet
// and we are rejecting it now. So pcs could be higher than expected.
eventLog.WriteEntry("Duplicate packet received in RtpStream - " + packet.ToString(),
EventLogEntryType.Error, (int)RtpEL.ID.DuplicatePacketReceived);
return;
}
// We've received the correct number of data packets, so we can now re-create the frame
//if (frame.Complete)
if (packet.Marker)
{
packets_Size = frame_Index + 1;
frame.PacketsInFrame = (uint)packets_Size;
}
if (frame.Complete)
{
// Raise the event
OnFrameReceivedEvent(frame.Data);
// Clean up frame - like returning packets to RtpListener
frame.Dispose();
frame = null;
// CXP RtpSenders increment by 1, to do otherwise is a signal from the Sender
// which means the stream needs to know what the signal means
currentFrameTS++;
}
}