修改testRTSPClient.cpp 为保存h264文件

live555源码中,testRTSPClient.cpp默认只打印下接收的信息就收工了.
需要修改DummySink::afterGettingFrame,在其中增加00 00 00 01 以及获取sps pps添加到相应位置
 

unsigned char *pH264 = NULL;    // 数据buffer

void DummySink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
      struct timeval presentationTime, unsigned /*durationInMicroseconds*/) {
 printf("__FUNCTION__  = %s\n", __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;

  pH264 = (unsigned char*)malloc(256*1024);

  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("\tsaved %d bytes\n", totalSize);
  free(pH264);
 }/*if 0 == strncmp(fSubsession.codecName(), "H264", 16)*/
  // Then continue, to request the next frame of data:
  continuePlaying();
}