- /* finally play the sound fragment */
- write(audio.device_fd, playing_buffer, sample_size);
-
- return sample_size;
-}
-#endif /* !AUDIO_STREAMING_DSP */
-
-void SoundServer()
-{
- struct SoundControl snd_ctrl;
- fd_set sound_fdset;
-
- close(audio.soundserver_pipe[1]); /* no writing into pipe needed */
-
- InitPlaylist();
-
-#if defined(PLATFORM_HPUX)
- InitAudioDevice(&afmt);
-#endif
-
- FD_ZERO(&sound_fdset);
- FD_SET(audio.soundserver_pipe[0], &sound_fdset);
-
- while(1) /* wait for sound playing commands from client */
- {
- struct timeval delay = { 0, 0 };
-
- FD_SET(audio.soundserver_pipe[0], &sound_fdset);
- select(audio.soundserver_pipe[0] + 1, &sound_fdset, NULL, NULL, NULL);
- if (!FD_ISSET(audio.soundserver_pipe[0], &sound_fdset))
- continue;
- if (read(audio.soundserver_pipe[0], &snd_ctrl, sizeof(snd_ctrl))
- != sizeof(snd_ctrl))
- Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
-
- HandleSoundRequest(snd_ctrl);
-
-#if defined(AUDIO_STREAMING_DSP)
-
- while (playing_sounds && select(audio.soundserver_pipe[0] + 1,
- &sound_fdset, NULL, NULL, &delay) < 1)
- {
- FD_SET(audio.soundserver_pipe[0], &sound_fdset);
-
- SoundServer_Mixer();
- }
-
-#else /* !AUDIO_STREAMING_DSP */
-
- if (!snd_ctrl.active || IS_LOOP(snd_ctrl) ||
- (audio.device_fd = OpenAudioDevice(audio.device_name)) < 0)
- continue;
-
- InitAudioDevice(&afmt);
-
- delay.tv_sec = 0;
- delay.tv_usec = 0;
-
- while (playing_sounds && select(audio.soundserver_pipe[0] + 1,
- &sound_fdset, NULL, NULL, &delay) < 1)
- {
- int wait_percent = 90; /* wait 90% of the real playing time */
- int sample_size;
-
- FD_SET(audio.soundserver_pipe[0], &sound_fdset);
-
- sample_size = SoundServer_SimpleAudio(snd_ctrl);
-
- delay.tv_sec = 0;
- delay.tv_usec =
- ((sample_size * 10 * wait_percent) / afmt.sample_rate) * 1000;
- }
-
- CloseAudioDevice(&audio.device_fd);
-
- /* delete all sounds from playlist */
- InitPlaylist();
-
-#endif /* !AUDIO_STREAMING_DSP */
- }
-}
-#endif /* PLATFORM_UNIX */
-
-#if defined(PLATFORM_MSDOS)
-static void sound_handler(struct SoundControl snd_ctrl)
-{
- int i;
-
- if (snd_ctrl.fade_sound)
- {
- if (!playing_sounds)
- return;
-
- for (i=0; i<audio.num_channels; i++)
- if ((snd_ctrl.stop_all_sounds ||
- (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr) ||
- (i == audio.music_channel && snd_ctrl.music)) &&
- !playlist[i].fade_sound)
- {
- playlist[i].fade_sound = TRUE;
- if (voice_check(playlist[i].voice))
- voice_ramp_volume(playlist[i].voice, 1000, 0);
- playlist[i].state &= ~SND_CTRL_IS_LOOP;
- }
- }
- else if (snd_ctrl.stop_all_sounds)
- {
- if (!playing_sounds)
- return;
- SoundServer_StopAllSounds();
- }
- else if (snd_ctrl.stop_sound)
- {
- if (!playing_sounds)
- return;
- SoundServer_StopSound(snd_ctrl);
- }
-
- for (i=0; i<audio.num_channels; i++)
- {
- if (!playlist[i].active || playlist[i].loop)
- continue;
-
- playlist[i].playingpos = voice_get_position(playlist[i].voice);
- playlist[i].volume = voice_get_volume(playlist[i].voice);
- if (playlist[i].playingpos == -1 || !playlist[i].volume)
- {
- deallocate_voice(playlist[i].voice);
- PlaylistRemoveSound(i);
- }
- }
-
- if (snd_ctrl.active)
- SoundServer_InsertNewSound(snd_ctrl);
-}
-#endif /* PLATFORM_MSDOS */
-
-#if 0
-#if defined(TARGET_SDL)
-static void sound_handler_SDL(struct SoundControl snd_ctrl)
-{
- /* copy sound_handler() here ... */
-}
-#endif /* TARGET_SDL */
-#endif
-
-#if !defined(PLATFORM_WIN32)
-static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
-{
- PlaylistInsertSound(snd_ctrl);
-}
-#endif /* !PLATFORM_WIN32 */
-
-/*
-void SoundServer_FadeSound(int nr)
-{
- int i;
-
- if (!playing_sounds)
- return;
-
- for(i=0;i<audio.num_channels;i++)
- if (snd_ctrl.stop_all_sounds || playlist[i].nr == snd_ctrl.nr)
- playlist[i].fade_sound = TRUE;
-}
-*/
-
-#if !defined(PLATFORM_WIN32)
-#if defined(PLATFORM_MSDOS)
-static void SoundServer_StopSound(struct SoundControl snd_ctrl)
-{
- int nr = snd_ctrl.nr;
- int i;
-
- if (!playing_sounds)
- return;
-
- for(i=0; i<audio.num_channels; i++)
- {
- if ((i == audio.music_channel && snd_ctrl.music) ||
- (i != audio.music_channel && playlist[i].nr == nr))
- {
-#if defined(PLATFORM_MSDOS)
- voice_set_volume(playlist[i].voice, 0);
- deallocate_voice(playlist[i].voice);
-#endif
- PlaylistRemoveSound(i);
- }
- }
-
-#if !defined(PLATFORM_MSDOS)
- if (!playing_sounds)
- close(audio.device_fd);
-#endif
-}
-
-static void SoundServer_StopAllSounds()
-{
- int i;
-
- for(i=0; i<audio.num_channels; i++)
- {
-#if defined(PLATFORM_MSDOS)
- voice_set_volume(playlist[i].voice, 0);
- deallocate_voice(playlist[i].voice);
-#endif
- PlaylistRemoveSound(i);
- }
- playing_sounds = 0;
-
-#if !defined(PLATFORM_MSDOS)
- close(audio.device_fd);
-#endif
-}
-#endif /* PLATFORM_MSDOS */
-#endif /* !PLATFORM_WIN32 */
-
-
-/* ------------------------------------------------------------------------- */
-/* platform dependant audio initialization code */
-/* ------------------------------------------------------------------------- */
-
-#if defined(AUDIO_LINUX_IOCTL)
-static void InitAudioDevice_Linux(struct AudioFormatInfo *afmt)
-{
- /* "ioctl()" expects pointer to 'int' value for stereo flag
- (boolean is defined as 'char', which will not work here) */
- unsigned int fragment_spec = 0;
- int fragment_size_query;
- int stereo = TRUE;
- struct
- {
- int format_ioctl;
- int format_result;
- }
- formats[] =
- {
- /* supported audio format in preferred order */
- { AFMT_S16_LE, AUDIO_FORMAT_S16 | AUDIO_FORMAT_LE },
- { AFMT_S16_BE, AUDIO_FORMAT_S16 | AUDIO_FORMAT_BE },
- { AFMT_U8, AUDIO_FORMAT_U8 },
- { -1, -1 }
- };
- int i;
-
- /* determine logarithm (log2) of the fragment size */
- while ((1 << fragment_spec) < afmt->fragment_size)
- fragment_spec++;
-
- /* use two fragments (play one fragment, prepare the other);
- one fragment would result in interrupted audio output, more
- than two fragments would raise audio output latency to much */
- fragment_spec |= 0x00020000;
-
- /* Example for fragment specification:
- - 2 buffers / 512 bytes (giving 1/16 second resolution for 8 kHz)
- - (with stereo the effective buffer size will shrink to 256)
- => fragment_size = 0x00020009 */
-
- if (ioctl(audio.device_fd, SNDCTL_DSP_SETFRAGMENT, &fragment_spec) < 0)
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot set fragment size of /dev/dsp -- no sounds");
-
- i = 0;
- afmt->format = 0;
- while (formats[i].format_result != -1)
- {
- unsigned int audio_format = formats[i].format_ioctl;
- if (ioctl(audio.device_fd, SNDCTL_DSP_SETFMT, &audio_format) == 0)
- {
- afmt->format = formats[i].format_result;
- break;
- }
- }
-
- if (afmt->format == 0) /* no supported audio format found */
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot set audio format of /dev/dsp -- no sounds");
-
- /* try if we can use stereo sound */
- afmt->stereo = TRUE;
- if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0)
- afmt->stereo = FALSE;
-
- if (ioctl(audio.device_fd, SNDCTL_DSP_SPEED, &afmt->sample_rate) < 0)
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot set sample rate of /dev/dsp -- no sounds");