C++ (Cpp) frame_c Examples

Example #1

File: p_ac3.cpp Project: rootslinux/mkvtoolnix

void
ac3_packetizer_c::adjust_header_values(ac3::frame_c const &ac3_header) {
  if (!m_first_packet)
    return;

  if (m_first_ac3_header.m_sample_rate != ac3_header.m_sample_rate)
    set_audio_sampling_freq((float)ac3_header.m_sample_rate);

  if (m_first_ac3_header.m_channels != ac3_header.m_channels)
    set_audio_channels(ac3_header.m_channels);

  if (ac3_header.is_eac3())
    set_codec_id(MKV_A_EAC3);

  if ((m_samples_per_packet != ac3_header.m_samples) || (m_first_ac3_header.m_sample_rate != ac3_header.m_sample_rate)) {
    if (ac3_header.m_sample_rate)
      m_timecode_calculator.set_samples_per_second(ac3_header.m_sample_rate);

    if (ac3_header.m_samples)
      m_samples_per_packet = ac3_header.m_samples;

    m_packet_duration = m_timecode_calculator.get_duration(m_samples_per_packet).to_ns();
    set_track_default_duration(m_packet_duration);
  }

  m_first_ac3_header = ac3_header;

  rerender_track_headers();
}

Example #2

File: r_wav.cpp Project: VRDate/mkvtoolnix

bool
wav_ac3acm_demuxer_c::probe(mm_io_cptr &io) {
  io->save_pos();
  int len = io->read(m_buf[m_cur_buf]->get_buffer(), AC3ACM_READ_SIZE);
  io->restore_pos();

  ac3::parser_c parser;
  int pos = parser.find_consecutive_frames(m_buf[m_cur_buf]->get_buffer(), len, 4);

  if (-1 == pos) {
    m_swap_bytes = true;
    decode_buffer(len);
    pos = parser.find_consecutive_frames(m_buf[m_cur_buf]->get_buffer(), len, 4);
  }

  if (-1 == pos)
    return false;

  return m_ac3header.decode_header(m_buf[m_cur_buf]->get_buffer() + pos, len - pos);
}

Example #3

File: r_wav.cpp Project: VRDate/mkvtoolnix

 virtual std::string get_codec() {
   return m_ac3header.is_eac3() ? "EAC3" : "AC3";
 };