Method configureWriter

src/ffmpeg/ffmpegSource.cpp:142–179

}

int cFFmpegSource::configureWriter(sDmLevelConfig &c)
{
  // instead of using the default log callback, we define a custom one which uses cSmileLogger
  av_log_set_level(AV_LOG_VERBOSE);
  av_log_set_callback(avLogCallback);

  // av_register_all has been deprecated starting liibavformat 58.9.100 and needs not to be called anymore
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58, 9, 100)
  av_register_all();
#endif

  int ret;

  if ((ret = avformat_open_input(&avFormatContext, filename, NULL, NULL)) < 0) {
    COMP_ERR("FFmpeg failed to open the file '%s'! %s",filename,avGetErrorString(ret));
  }

  if ((ret = avformat_find_stream_info(avFormatContext, NULL)) < 0) {
    COMP_ERR("could not find stream information of file '%s'! %s",filename,avGetErrorString(ret));
  }

  openAVCodecContext(&audioStreamIndex, &avCodecContext, avFormatContext);

  // log debug info about audio format
  av_dump_format(avFormatContext, 0, filename, 0);

  avFrame = av_frame_alloc();
  if (!avFrame) {
    COMP_ERR("could not allocate frame! Out of memory?");
  }

  // set config parameters
  c.T = 1.0/avCodecContext->sample_rate;
  c.N = avCodecContext->channels;
  c.noTimeMeta = true;

  return 1;
}

int cFFmpegSource::setupNewNames(long nEl) 
{