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unsigned char *pH264 = NULL;

DummySink::DummySink(UsageEnvironment& env, MediaSubsession& subsession, char const* streamId)
 : MediaSink(env),
 fSubsession(subsession) {
 fStreamId = strDup(streamId);
 fReceiveBuffer = new u_int8_t[DUMMY_SINK_RECEIVE_BUFFER_SIZE];
 pH264 = (unsigned char*)malloc(256*1024);
}

DummySink::~DummySink() {
 delete[] fReceiveBuffer;
 delete[] fStreamId;
 if(NULL != pH264)
 free(pH264);
}

void DummySink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
 struct timeval presentationTime, unsigned /*durationInMicroseconds*/) {
#if(0)
 // Weve just received a frame of data. (Optionally) print out information about it:
#ifdef DEBUG_PRINT_EACH_RECEIVED_FRAME
 if (fStreamId != NULL) envir() << "Stream "" << fStreamId << ""; ";
 envir() << fSubsession.mediumName() << "/" << fSubsession.codecName() << ": Received " << frameSize << " bytes";
 if (numTruncatedBytes > 0) envir() << " (with " << numTruncatedBytes << " bytes truncated)";
 char uSecsStr[6+1]; // used to output the microseconds part of the presentation time
 sprintf(uSecsStr, "%06u", (unsigned)presentationTime.tv_usec);
 envir() << ". Presentation time: " << (int)presentationTime.tv_sec << "." << uSecsStr;
 if (fSubsession.rtpSource() != NULL && !fSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP()) {
 envir() << "!"; // mark the debugging output to indicate that this presentation time is not RTCP-synchronized
 }
#ifdef DEBUG_PRINT_NPT
 envir() << " NPT: " << fSubsession.getNormalPlayTime(presentationTime);
#endif
 envir() << " ";
#endif
#else
 printf("__FUNCTION__ = %s ", __FUNCTION__ );
 if(0 == strncmp(fSubsession.codecName(), "H264", 16))
 { 
 unsigned char nalu_header[4] = { 0, 0, 0, 1 }; 
 unsigned char extraData[256]; 
 unsigned int num = 0; 
 
 SPropRecord *pSPropRecord;
 pSPropRecord = parseSPropParameterSets(fSubsession.fmtp_spropparametersets(), num); 
 
 unsigned int extraLen;
 extraLen = 0;

 //p_record[0] is sps 
 //p+record[1] is pps
 for(unsigned int i = 0; i < num; i++){ 
 memcpy(&extraData[extraLen], &nalu_header[0], 4);
 extraLen += 4;
 memcpy(&extraData[extraLen], pSPropRecord[i].sPropBytes, pSPropRecord[i].sPropLength);
 extraLen += pSPropRecord[i].sPropLength;
 }/*for i*/

 memcpy(&extraData[extraLen], &nalu_header[0], 4);
 extraLen += 4;

 delete[] pSPropRecord ; 

 memcpy(pH264, &extraData[0], extraLen);
 memcpy(pH264 + extraLen, fReceiveBuffer, frameSize); 
 
 int totalSize;
 totalSize = extraLen + frameSize;

 static FILE *fp = fopen("saved.h264", "wb");

 fwrite(pH264, 1, totalSize, fp);
 fflush(fp);
 printf(" saved %d bytes ", totalSize);
 }/*if 0 == strncmp(fSubsession.codecName(), "H264", 16)*/
#endif 
 // Then continue, to request the next frame of data:
 continuePlaying();
}