internal void OnFrameReceivedEvent(BufferChunk frame)
{
framesReceived++;
// Don't trigger the event if it isn't hooked
// Although RtpEvents.FireEvent does this same check, we add it here for efficiency
// As audio / video streams create alot of data, but don't use the FrameReceived event
if (FrameReceived != null)
{
if (framesReceived == 1)
{
OnFirstFrameReceivedEvent();
}
object[] args = { this, new FrameReceivedEventArgs(this, frame) };
EventThrower.QueueUserWorkItem(new RtpEvents.RaiseEvent(RaiseFrameReceivedEvent), args);
}
else // Audio and Video
{
if (frameReceived)
{
if (framesReceived == 1)
{
firstFrame = frame.Peek(frame.Index, frame.Length);
OnFirstFrameReceivedEvent();
}
lastFrame = frame;
frameReceived = false;
nextFrameEvent.Set();
}
}
}
/// <summary>
/// Read a video frame from the buffer.
/// </summary>
public bool Read(out BufferChunk Frame, out ulong Time)
{
Time = 0;
Frame = null;
lock (this)
{
if (FramesReady == 0)
{
return(false);
}
if ((Buffer == null) || (PresTime == null) ||
(FrameSize == 0) || (FrameCount == 0))
{
return(false);
}
//Debug.WriteLine("VideoBuffer.Read: ReadOffset=" +ReadOffset.ToString());
Frame = Buffer.Peek((int)(ReadOffset * FrameSize), (int)FrameSize);
Time = PresTime[ReadOffset];
lastReadTime = Time + timeZero;
ReadOffset++;
if (ReadOffset == FrameCount)
{
ReadOffset = 0;
}
FramesReady--;
return(true);
}
}
/// <summary>
/// Give the caller a reference to the next audio sample.
/// </summary>
public bool Read(out BufferChunk Sample, out ulong Time)
{
Time = 0;
Sample = null;
lock (this)
{
if (SamplesReady == 0)
{
return(false);
}
if ((Buffer == null) || (PresTime == null) ||
(SampleSize == 0) || (SampleCount == 0))
{
return(false);
}
Sample = Buffer.Peek((int)(ReadOffset * SampleSize), (int)SampleSize);
Time = PresTime[ReadOffset];
ReadOffset++;
if (ReadOffset == SampleCount)
{
ReadOffset = 0;
}
SamplesReady--;
//Debug.WriteLine("AudioBuffer:Read for " + cname + ". Remaining samples ready=" + SamplesReady.ToString());
return(true);
}
}
public BufferChunk FirstFrame()
{
ValidateUsingNextFrame();
return(firstFrame.Peek(firstFrame.Index, firstFrame.Length));
}
public void WriteToBuffer(BufferChunk buffer)
{
// Grab space for the header
buffer += RtcpHeader.PlaceHolder;
BufferChunk hBuffer = buffer.Peek(buffer.Length - RtcpHeader.SIZE, RtcpHeader.SIZE);
// Write the data to the buffer
WriteDataToBuffer(buffer);
// Leave the buffer 32 bit aligned
int padding = AddPadding(buffer);
// Update the Header's length
Debug.Assert((Size) % 4 == 0);
header.Length = (short)((Size - RtcpHeader.SIZE) / 4);
// Write the header to the buffer
header.WriteDataToBuffer(hBuffer);
}
internal void OnFrameReceivedEvent(BufferChunk frame)
{
framesReceived++;
// Don't trigger the event if it isn't hooked
// Although RtpEvents.FireEvent does this same check, we add it here for efficiency
// As audio / video streams create alot of data, but don't use the FrameReceived event
if(FrameReceived != null)
{
if(framesReceived == 1)
{
OnFirstFrameReceivedEvent();
}
object[] args = {this, new FrameReceivedEventArgs(this, frame)};
EventThrower.QueueUserWorkItem(new RtpEvents.RaiseEvent(RaiseFrameReceivedEvent), args);
}
else // Audio and Video
{
if(frameReceived)
{
if(framesReceived == 1)
{
firstFrame = frame.Peek(frame.Index, frame.Length);
OnFirstFrameReceivedEvent();
}
lastFrame = frame;
frameReceived = false;
nextFrameEvent.Set();
}
}
}
