Method SoundStartFrame

sndlib/sdlsound.cpp:626–696

Begin sound frame

// Begin sound frame
void lnxsound::SoundStartFrame() {
  float frame_time;

  if (m_timer_last_frametime == -1) {
    frame_time = 0.0f;
  } else {
    frame_time = (timer_GetMSTime() - m_timer_last_frametime) / 1000.0f;
  }
  m_timer_last_frametime = timer_GetMSTime();

  // perform necessary functions if sound events are pending for frame, this doesn't have to do anything
  // if the mixer doesn't require such actions.  Aureal does though.
  if (m_pending_actions) {
    mprintf(0, "pending actions\n");
  }

  m_in_sound_frame = true;
  m_pending_actions = false;

  int counter = 0, loop_counter = 0, stream_counter = 0, buf_loop_counter = 0;

#ifdef _DEBUG
  int n_p5 = 0, n_p4 = 0, n_p3 = 0, n_p2 = 0, n_p1 = 0, n_p0 = 0;
#endif

  for (auto &current_slot : sound_cache) {
    sound_buffer_info *sb = &current_slot;
    if (sb->m_status != SSF_UNUSED) {
      counter++;
      if (sb->m_status & SSF_PLAY_LOOPING) {
        if (sb->m_status & SSF_BUFFERED_LOOP)
          buf_loop_counter++;
        loop_counter++;
      }
      if (sb->m_status & SSF_PLAY_STREAMING)
        stream_counter++;

#ifdef _DEBUG
      if (sb->play_info->priority == SND_PRIORITY_CRITICAL)
        n_p5++;
      else if (sb->play_info->priority == SND_PRIORITY_HIGHEST)
        n_p4++;
      else if (sb->play_info->priority == SND_PRIORITY_HIGH)
        n_p3++;
      else if (sb->play_info->priority == SND_PRIORITY_NORMAL)
        n_p2++;
      else if (sb->play_info->priority == SND_PRIORITY_LOW)
        n_p1++;
      else if (sb->play_info->priority == SND_PRIORITY_LOWEST)
        n_p0++;
#endif
    }
  }

  // update cache stress timer.
  if (counter < (MAX_SOUNDS_PLAYING_AT_ONCE * 3 / 4)) {
    m_cache_stress_timer += frame_time;
  } else {