C++ (Cpp) EBML_ID_LENGTH示例

示例#1

文件： kax_file.cpp 项目： Rodeo314/mkvtoolnix

unsigned long
kax_file_c::get_element_size(EbmlElement *e) {
  auto m = dynamic_cast<EbmlMaster *>(e);

  if (!m || e->IsFiniteSize())
    return e->GetSizeLength() + EBML_ID_LENGTH(static_cast<const EbmlId &>(*e)) + e->GetSize();

  auto max_end_pos = e->GetElementPosition() + EBML_ID_LENGTH(static_cast<const EbmlId &>(*e));
  for (int idx = 0, end = m->ListSize(); end > idx; ++idx)
    max_end_pos = std::max(max_end_pos, (*m)[idx]->GetElementPosition() + get_element_size((*m)[idx]));

  return max_end_pos - e->GetElementPosition();
}

示例#2

文件： cues.cpp 项目： Klaudit/mkvtoolnix

uint64_t
cues_c::calculate_point_size(cue_point_t const &point)
  const {
  uint64_t point_size = EBML_ID_LENGTH(EBML_ID(KaxCuePoint))           + 1
                      + EBML_ID_LENGTH(EBML_ID(KaxCuePoint))           + 1 + calculate_bytes_for_uint(point.timecode / g_timecode_scale)
                      + EBML_ID_LENGTH(EBML_ID(KaxCueTrackPositions))  + 1
                      + EBML_ID_LENGTH(EBML_ID(KaxCueTrack))           + 1 + calculate_bytes_for_uint(point.track_num)
                      + EBML_ID_LENGTH(EBML_ID(KaxCueClusterPosition)) + 1 + calculate_bytes_for_uint(point.cluster_position);

  auto codec_state_position = m_codec_state_position_map.find({ point.track_num, point.timecode });
  if (codec_state_position != m_codec_state_position_map.end())
    point_size += EBML_ID_LENGTH(EBML_ID(KaxCueCodecState)) + 1 + calculate_bytes_for_uint(codec_state_position->second);

  if (point.relative_position)
    point_size += EBML_ID_LENGTH(EBML_ID(KaxCueRelativePosition)) + 1 + calculate_bytes_for_uint(point.relative_position);

  if (point.duration)
    point_size += EBML_ID_LENGTH(EBML_ID(KaxCueDuration)) + 1 + calculate_bytes_for_uint(RND_TIMECODE_SCALE(point.duration) / g_timecode_scale);

  return point_size;
}