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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#002060'>Hi Ross<o:p></o:p></span></p><p class=MsoNormal><span style='color:#002060'>You wrote:<o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060'>>But in your first message, you talked about "5MP" images. Did you mean "5 MByte images"; "5 Megapixel images"? In any case, what codec is this? I.e., what kind of data are you trying to stream?<o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060'>Yes, I am trying to stream H.264 compressed live images from my camera sensor which are 2144x1944 pixels, so just under 5MegaPixels. I’m using h264videoStreamFramer directly and H264VideoRTPSink downstream.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060'>My deliver frame function looks like this, virtually copied from your DeviceSource sample, except for where we get the frame from our inter-process buffers.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>void StreamSource::deliverFrame()<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>{ <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> streamSubStream_t *substream = m_substream;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> FUNCTION_TRACE;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> if (!isCurrentlyAwaitingData() || (substream == NULL))<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> TRACE ("NoData, substream=0x%p\r\n", substream);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> return;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> TRACE("Max Frame size = %u\r\n", fMaxSize);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> fNumTruncatedBytes = 0;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> //fDurationInMicroseconds = ; // not set<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> //get the next frame buffer for streaming<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> CStreamBuffer * pBuffer = substream->pStreamManager->GetNewestBufferForStreaming(substream->iSeqNumber);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> if (pBuffer == NULL)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> TRACE("deliverFrame had no data\r\n");<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> return; //no data, have to wait for main thread to signal Live555 to call us back later<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> substream->iSeqNumber = pBuffer->GetSequenceNumber(); //we have the frame so save Sequence number ready for next one<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> TRACE("deliverFrame(): Stream:%d, Sequence Number:%lu\r\n", substream->iStreamNo, substream->iSeqNumber);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> unsigned newFrameSize = pBuffer->GetDataSize();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> if (newFrameSize > fMaxSize)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> fFrameSize = fMaxSize;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> fNumTruncatedBytes = newFrameSize - fMaxSize;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> INFO("deliverFrame(): Stream:%d, Frame size:%u, %u bytes truncated\r\n", substream->iStreamNo, newFrameSize, fNumTruncatedBytes);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> else<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> fFrameSize = newFrameSize;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> }<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> gettimeofday(&fPresentationTime, NULL);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> memmove(fTo, pBuffer->GetDataPtr(), fFrameSize);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> TRACE("deliverFrame %d bytes delivered\r\n", fFrameSize);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> //return buffer back to Stream Manager<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> substream->pStreamManager->ReturnBufferAfterStreaming(pBuffer);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'> FramedSource::afterGetting(this);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal><span style='color:#002060'>In my corresponding “pushFrame” function, I save the current frame from the encoder and then call signalNewFrame to signal the event to the scheduler, also as per the DeviceSource sample. However, whatever I set the </span><span style='color:#002060'>OutPacketBuffer::maxSize to, I end up truncating frames in the above function. BANK_SIZE in StreamParser.cpp also seems to be critical. If I increase the BANK_SIZE value I get less frequent truncations but still can’t stop them completely. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#002060'>If the problem is in my code, please could you suggest where else I should look?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#002060'>Best regards - David</span><span style='color:#002060'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#002060'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#002060'><o:p> </o:p></span></p></div></body></html>