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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Everyone,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am trying to stream the frames I capture from OpenGL frame buffer.<o:p></o:p></p><p class=MsoNormal>I am using LIVE555 library code for that and I am trying to stream it using RTSP.<o:p></o:p></p><p class=MsoNormal>I encode the frames to H264 format.<o:p></o:p></p><p class=MsoNormal>I have written a custom class “<b>LiveSourceWithx264</b>” which derives from “<b>FramedSource</b>”.<o:p></o:p></p><p class=MsoNormal>This class has the function “<b>doGetNextFrame()</b>” and it has the following code.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> <b><i><span style='color:black'>gettimeofday(¤tTime,NULL);<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> if(!isCurrentlyAwaitingData()) return;<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> <o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> void* buf = NULL;<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> buf = RTSPstreamQueue->getBuf( fFrameSize, false );<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'><o:p> </o:p></span></i></b></p><p class=MsoNormal style='text-indent:.5in'><b><i><span style='color:black'>if ( fFrameSize > fMaxSize )<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> {<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> fNumTruncatedBytes = fFrameSize - fMaxSize;<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> fFrameSize = fMaxSize;<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> }<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> <o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> fPresentationTime = currentTime;<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> memmove(fTo, buf, fFrameSize);<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'><o:p> </o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> RTSPstreamQueue->releaseBuf();<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'> FramedSource::afterGetting(this);<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='color:black'><o:p> </o:p></span></i></b></p><p class=MsoNormal><span style='color:black'>In the above code <b>RTSPstreamQueue<i> </i></b>function returns a pointer to the frame and the sets the size of the frame in the variable fFrameSize.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>But if fFrameSize is greater than fMaxSize then I have to truncate the data.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>I think this is what that is causing the corrupted frames.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Please take a look at the attachments to get an idea how the frames are getting corrupted.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>Is there any way to get around this problem.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Any pointer would be appretiated.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>Thanks<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Vikram Singh.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>