int OpusHeaderToPacket()

in nlsCppSdk/encoder/oggopusHeader.cpp [110:150]

• 29 lines of code
• 14 McCabe index (conditional complexity)

int OpusHeaderToPacket(const OpusHeader *h, unsigned char *packet, int len) {
  Packet p;
  unsigned char ch;

  p.data = packet;
  p.maxlen = len;
  p.pos = 0;
  if (len < 19) return 0;
  if (!write_chars(&p, (const unsigned char *)"OpusHead", 8)) return 0;
  /* Version is 1 */
  ch = 1;
  if (!write_chars(&p, &ch, 1)) return 0;

  ch = h->channels;
  if (!write_chars(&p, &ch, 1)) return 0;

  if (!write_uint16(&p, h->preskip)) return 0;

  if (!write_uint32(&p, h->input_sample_rate)) return 0;

  if (!write_uint16(&p, h->gain)) return 0;

  ch = h->channel_mapping;
  if (!write_chars(&p, &ch, 1)) return 0;

  if (h->channel_mapping != 0) {
    ch = h->nb_streams;
    if (!write_chars(&p, &ch, 1)) return 0;

    ch = h->nb_coupled;
    if (!write_chars(&p, &ch, 1)) return 0;

    int i;
    /* Multi-stream support */
    for (i = 0; i < h->channels; i++) {
      if (!write_chars(&p, &h->stream_map[i], 1)) return 0;
    }
  }

  return p.pos;
}