[Live-devel] How do I get the data from the lower levels..... Another DoGetNextFrame question (Ross Finlayson)

[Waters, Ralph]

Hi Ross,

Thanks for the response. I'm sorry that I didn't ask my question in a
simpler manner. I hope this email helps. Please remember that I am a
novice at Live555, so I cannot see from your deeply experienced eyes.

Assumption: Live555 has raw RTP video and audio packets coming in, and
it re-assembles these into a framed video for output.
 
Question: How do I get the data, from a higher level task, suck as
PollTask (below) that is the re-assembled video payload. Video packets
may be created from re-assembled RTP packets, or the video packets can
be decomposed
From 1 RTP packet into many video packets.

I need to get this video frame data.

Real Question: How do I get at the processed packets of (video frame)
data, say from a MPEG4 or H.264 source, from a background PollTask?

Do I use the solution that you gave? "The alternative is to write a
static member function that then calls "doGetNextFrame()", and have
"scheduleDelayedTask()" arrange to call the static member function.
There are several examples of this in the code already." Or is that for
the incoming, unprocessed RTP data?

Or do I use something that calls afterGettingFrame from the sink? I
think this is more likely.


I need to call the "thing" that gets me processed data from something
like this:

//=====================================================================
// This polls the event loop every so often to check for events
//=====================================================================
void RtspClientPrivate::PollTask(void* pArgs) {

  //ACE_TRACE( ACE_TEXT("RtspClientPrivate::PollTask()") );


  RtspClientPrivate *pThis = reinterpret_cast<RtspClientPrivate
*>(pArgs);

  if(NULL != pThis){
	// Call this again, after a brief delay:
	int uSecsToDelay = 100000; // 100 ms
	TaskFunc *pFunc =
reinterpret_cast<TaskFunc*>(RtspClientPrivate::PollTask);
	
	// HOW DO I GET THE DATA THAT I NEED HERE? (the upper layer)

	pThis->m_pEnv->taskScheduler().scheduleDelayedTask(uSecsToDelay,
pFunc,
	
pArgs);
  }
}

Thanks, Rusty

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