+ if (IS_PARENT_PROCESS(audio.mixer_pid))
+ kill(audio.mixer_pid, SIGTERM);
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for platform specific audio device initialization */
+/* ------------------------------------------------------------------------- */
+
+#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");
+
+ /* get the real fragmentation size; this should return 512 */
+ if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size_query) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot get fragment size of /dev/dsp -- no sounds");
+ if (fragment_size_query != afmt->fragment_size)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot set fragment size of /dev/dsp -- no sounds");
+}
+#endif /* AUDIO_LINUX_IOCTL */
+
+#if defined(PLATFORM_NETBSD)
+static void InitAudioDevice_NetBSD(struct AudioFormatInfo *afmt)
+{
+ audio_info_t a_info;
+ boolean stereo = TRUE;
+
+ AUDIO_INITINFO(&a_info);
+ a_info.play.encoding = AUDIO_ENCODING_LINEAR8;
+ a_info.play.precision = 8;
+ a_info.play.channels = 2;
+ a_info.play.sample_rate = sample_rate;
+ a_info.blocksize = fragment_size;
+
+ afmt->format = AUDIO_FORMAT_U8;
+ afmt->stereo = TRUE;
+
+ if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
+ {
+ /* try to disable stereo */
+ a_info.play.channels = 1;
+
+ afmt->stereo = FALSE;
+
+ if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot set sample rate of /dev/audio -- no sounds");
+ }
+}
+#endif /* PLATFORM_NETBSD */
+
+#if defined(PLATFORM_HPUX)
+static void InitAudioDevice_HPUX(struct AudioFormatInfo *afmt)
+{
+ struct audio_describe ainfo;
+ int audio_ctl;
+
+ audio_ctl = open("/dev/audioCtl", O_WRONLY | O_NDELAY);
+ if (audio_ctl == -1)
+ Error(ERR_EXIT_SOUND_SERVER, "cannot open /dev/audioCtl -- no sounds");
+
+ if (ioctl(audio_ctl, AUDIO_DESCRIBE, &ainfo) == -1)
+ Error(ERR_EXIT_SOUND_SERVER, "no audio info -- no sounds");
+
+ if (ioctl(audio_ctl, AUDIO_SET_DATA_FORMAT, AUDIO_FORMAT_ULAW) == -1)
+ Error(ERR_EXIT_SOUND_SERVER, "ulaw audio not available -- no sounds");
+
+ ioctl(audio_ctl, AUDIO_SET_CHANNELS, 1);
+ ioctl(audio_ctl, AUDIO_SET_SAMPLE_RATE, 8000);
+
+ afmt->format = AUDIO_FORMAT_U8;
+ afmt->stereo = FALSE;
+ afmt->sample_rate = 8000;
+
+ close(audio_ctl);
+}
+#endif /* PLATFORM_HPUX */
+
+static void InitAudioDevice(struct AudioFormatInfo *afmt)
+{
+ afmt->stereo = TRUE;
+ afmt->format = AUDIO_FORMAT_UNKNOWN;
+ afmt->sample_rate = DEFAULT_AUDIO_SAMPLE_RATE;
+ afmt->fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE;
+
+#if defined(AUDIO_LINUX_IOCTL)
+ InitAudioDevice_Linux(afmt);
+#elif defined(PLATFORM_NETBSD)
+ InitAudioDevice_NetBSD(afmt);
+#elif defined(PLATFORM_HPUX)
+ InitAudioDevice_HPUX(afmt);
+#else
+ /* generic /dev/audio stuff might be placed here */
+#endif
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for communication between main process and sound mixer process */
+/* ------------------------------------------------------------------------- */
+
+static void SendSoundControlToMixerProcess(SoundControl *snd_ctrl)
+{
+ if (IS_CHILD_PROCESS(audio.mixer_pid))
+ return;
+
+ if (write(audio.mixer_pipe[1], snd_ctrl, sizeof(SoundControl)) < 0)
+ {
+ Error(ERR_WARN, "cannot pipe to child process -- no sounds");
+ audio.sound_available = audio.sound_enabled = FALSE;
+ return;
+ }
+}
+
+static void ReadSoundControlFromMainProcess(SoundControl *snd_ctrl)
+{
+ if (IS_PARENT_PROCESS(audio.mixer_pid))
+ return;
+
+ if (read(audio.mixer_pipe[0], snd_ctrl, sizeof(SoundControl))
+ != sizeof(SoundControl))
+ Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
+}
+
+static void WriteReloadInfoToPipe(char *set_name, int type)
+{
+ SoundControl snd_ctrl;
+ TreeInfo *ti = (type == SND_CTRL_RELOAD_SOUNDS ? artwork.snd_current :
+ artwork.mus_current);
+ unsigned long str_size1 = strlen(leveldir_current->fullpath) + 1;
+ unsigned long str_size2 = strlen(ti->basepath) + 1;
+ unsigned long str_size3 = strlen(ti->fullpath) + 1;
+
+ if (IS_CHILD_PROCESS(audio.mixer_pid))
+ return;
+
+ if (leveldir_current == NULL) /* should never happen */
+ Error(ERR_EXIT, "leveldir_current == NULL");
+
+ snd_ctrl.active = FALSE;
+ snd_ctrl.state = type;
+ snd_ctrl.data_len = strlen(set_name) + 1;
+
+ if (write(audio.mixer_pipe[1], &snd_ctrl,
+ sizeof(snd_ctrl)) < 0 ||
+ write(audio.mixer_pipe[1], set_name,
+ snd_ctrl.data_len) < 0 ||
+ write(audio.mixer_pipe[1], leveldir_current,
+ sizeof(TreeInfo)) < 0 ||
+ write(audio.mixer_pipe[1], ti,
+ sizeof(TreeInfo)) < 0 ||
+ write(audio.mixer_pipe[1], &str_size1,
+ sizeof(unsigned long)) < 0 ||
+ write(audio.mixer_pipe[1], &str_size2,
+ sizeof(unsigned long)) < 0 ||
+ write(audio.mixer_pipe[1], &str_size3,
+ sizeof(unsigned long)) < 0 ||
+ write(audio.mixer_pipe[1], leveldir_current->fullpath,
+ str_size1) < 0 ||
+ write(audio.mixer_pipe[1], ti->basepath,
+ str_size2) < 0 ||
+ write(audio.mixer_pipe[1], ti->fullpath,
+ str_size3) < 0)
+ {
+ Error(ERR_WARN, "cannot pipe to child process -- no sounds");
+ audio.sound_available = audio.sound_enabled = FALSE;
+ return;
+ }
+}
+
+static void ReadReloadInfoFromPipe(SoundControl *snd_ctrl)
+{
+ TreeInfo **ti_ptr = ((snd_ctrl->state & SND_CTRL_RELOAD_SOUNDS) ?
+ &artwork.snd_current : &artwork.mus_current);
+ TreeInfo *ti = *ti_ptr;
+ unsigned long str_size1, str_size2, str_size3;
+ static char *set_name = NULL;
+
+ if (set_name)
+ free(set_name);
+
+ set_name = checked_malloc(snd_ctrl->data_len);
+
+ if (leveldir_current == NULL)
+ leveldir_current = checked_calloc(sizeof(TreeInfo));
+ if (ti == NULL)
+ ti = *ti_ptr = checked_calloc(sizeof(TreeInfo));
+ if (leveldir_current->fullpath != NULL)
+ free(leveldir_current->fullpath);
+ if (ti->basepath != NULL)
+ free(ti->basepath);
+ if (ti->fullpath != NULL)
+ free(ti->fullpath);
+
+ if (read(audio.mixer_pipe[0], set_name,
+ snd_ctrl->data_len) != snd_ctrl->data_len ||
+ read(audio.mixer_pipe[0], leveldir_current,
+ sizeof(TreeInfo)) != sizeof(TreeInfo) ||
+ read(audio.mixer_pipe[0], ti,
+ sizeof(TreeInfo)) != sizeof(TreeInfo) ||
+ read(audio.mixer_pipe[0], &str_size1,
+ sizeof(unsigned long)) != sizeof(unsigned long) ||
+ read(audio.mixer_pipe[0], &str_size2,
+ sizeof(unsigned long)) != sizeof(unsigned long) ||
+ read(audio.mixer_pipe[0], &str_size3,
+ sizeof(unsigned long)) != sizeof(unsigned long))
+ Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
+
+ leveldir_current->fullpath = checked_calloc(str_size1);
+ ti->basepath = checked_calloc(str_size2);
+ ti->fullpath = checked_calloc(str_size3);
+
+ if (read(audio.mixer_pipe[0], leveldir_current->fullpath,
+ str_size1) != str_size1 ||
+ read(audio.mixer_pipe[0], ti->basepath,
+ str_size2) != str_size2 ||
+ read(audio.mixer_pipe[0], ti->fullpath,
+ str_size3) != str_size3)
+ Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
+
+ if (snd_ctrl->state & SND_CTRL_RELOAD_SOUNDS)
+ artwork.sounds_set_current = set_name;
+ else
+ artwork.music_set_current = set_name;
+}
+
+#endif /* AUDIO_UNIX_NATIVE */
+
+
+/* ------------------------------------------------------------------------- */
+/* mixer functions */
+/* ------------------------------------------------------------------------- */
+
+void Mixer_InitChannels()
+{
+ int i;
+
+ for(i=0; i<audio.num_channels; i++)
+ mixer[i].active = FALSE;
+ mixer_active_channels = 0;
+}
+
+static void Mixer_ResetChannelExpiration(int channel)
+{
+ mixer[channel].playing_starttime = Counter();
+
+#if defined(TARGET_SDL)
+ if (IS_LOOP(mixer[channel]) && !IS_MUSIC(mixer[channel]))
+ Mix_ExpireChannel(channel, SOUND_LOOP_EXPIRATION_TIME);
+#endif
+}
+
+static boolean Mixer_ChannelExpired(int channel)
+{
+ if (!mixer[channel].active)
+ return TRUE;
+
+ if (IS_LOOP(mixer[channel]) && !IS_MUSIC(mixer[channel]) &&
+ DelayReached(&mixer[channel].playing_starttime,
+ SOUND_LOOP_EXPIRATION_TIME))
+ return TRUE;
+
+#if defined(TARGET_SDL)
+
+ if (!Mix_Playing(channel))
+ return TRUE;
+
+#elif defined(TARGET_ALLEGRO)
+
+ mixer[channel].playing_pos = voice_get_position(mixer[channel].voice);
+ mixer[channel].volume = voice_get_volume(mixer[channel].voice);
+
+ /* sound sample has completed playing or was completely faded out */
+ if (mixer[channel].playing_pos == -1 || mixer[channel].volume == 0)
+ return TRUE;
+
+#endif /* TARGET_ALLEGRO */
+
+ return FALSE;
+}
+
+static boolean Mixer_AllocateChannel(int channel)
+{
+#if defined(TARGET_ALLEGRO)
+ mixer[channel].voice = allocate_voice((SAMPLE *)mixer[channel].data_ptr);
+ if (mixer[channel].voice < 0)
+ return FALSE;
+#endif
+
+ return TRUE;
+}
+
+static void Mixer_SetChannelProperties(int channel)
+{
+#if defined(TARGET_SDL)
+ Mix_Volume(channel, mixer[channel].volume);
+ Mix_SetPanning(channel,
+ SOUND_VOLUME_LEFT(mixer[channel].stereo_position),
+ SOUND_VOLUME_RIGHT(mixer[channel].stereo_position));
+#elif defined(TARGET_ALLEGRO)
+ voice_set_volume(mixer[channel].voice, mixer[channel].volume);
+ voice_set_pan(mixer[channel].voice, mixer[channel].stereo_position);
+#endif
+}
+
+static void Mixer_StartChannel(int channel)
+{
+#if defined(TARGET_SDL)
+ Mix_PlayChannel(channel, mixer[channel].data_ptr,
+ IS_LOOP(mixer[channel]) ? -1 : 0);
+#elif defined(TARGET_ALLEGRO)
+ if (IS_LOOP(mixer[channel]))
+ voice_set_playmode(mixer[channel].voice, PLAYMODE_LOOP);
+
+ voice_start(mixer[channel].voice);
+#endif
+}
+
+static void Mixer_PlayChannel(int channel)
+{
+ /* start with inactive channel in case something goes wrong */
+ mixer[channel].active = FALSE;
+
+ if (mixer[channel].type != MUS_TYPE_WAV)
+ return;
+
+ if (!Mixer_AllocateChannel(channel))
+ return;
+
+ Mixer_SetChannelProperties(channel);
+ Mixer_StartChannel(channel);
+
+ Mixer_ResetChannelExpiration(channel);
+
+ mixer[channel].playing_pos = 0;
+ mixer[channel].active = TRUE;
+ mixer_active_channels++;
+}
+
+static void Mixer_PlayMusicChannel()
+{
+ Mixer_PlayChannel(audio.music_channel);
+
+#if defined(TARGET_SDL)
+ if (mixer[audio.music_channel].type != MUS_TYPE_WAV)
+ {
+ /* Mix_VolumeMusic() must be called _after_ Mix_PlayMusic() --
+ this looks like a bug in the SDL_mixer library */
+ Mix_PlayMusic(mixer[audio.music_channel].data_ptr, -1);
+ Mix_VolumeMusic(SOUND_MAX_VOLUME);
+ }
+#endif
+}
+
+static void Mixer_StopChannel(int channel)
+{
+ if (!mixer[channel].active)
+ return;
+
+#if defined(TARGET_SDL)
+ Mix_HaltChannel(channel);
+#elif defined(TARGET_ALLEGRO)
+ voice_set_volume(mixer[channel].voice, 0);
+ deallocate_voice(mixer[channel].voice);
+#endif
+
+ mixer[channel].active = FALSE;
+ mixer_active_channels--;
+}
+
+static void Mixer_StopMusicChannel()
+{
+ Mixer_StopChannel(audio.music_channel);
+
+#if defined(TARGET_SDL)
+ Mix_HaltMusic();
+#endif
+}
+
+static void Mixer_FadeChannel(int channel)
+{
+ if (!mixer[channel].active)
+ return;
+
+ mixer[channel].state |= SND_CTRL_FADE;
+
+#if defined(TARGET_SDL)
+ Mix_FadeOutChannel(channel, SOUND_FADING_INTERVAL);
+#elif defined(TARGET_ALLEGRO)
+ if (voice_check(mixer[channel].voice))
+ voice_ramp_volume(mixer[channel].voice, SOUND_FADING_INTERVAL, 0);
+#endif
+}
+
+static void Mixer_FadeMusicChannel()
+{
+ Mixer_FadeChannel(audio.music_channel);
+
+#if defined(TARGET_SDL)
+ Mix_FadeOutMusic(SOUND_FADING_INTERVAL);
+#endif
+}
+
+static void Mixer_UnFadeChannel(int channel)
+{
+ if (!mixer[channel].active || !IS_FADING(mixer[channel]))
+ return;
+
+ mixer[channel].state &= ~SND_CTRL_FADE;
+ mixer[channel].volume = SOUND_MAX_VOLUME;
+
+#if defined(TARGET_SDL)
+ Mix_ExpireChannel(channel, -1);
+ Mix_Volume(channel, mixer[channel].volume);
+#elif defined(TARGET_ALLEGRO)
+ voice_stop_volumeramp(mixer[channel].voice);
+ voice_ramp_volume(mixer[channel].voice, SOUND_FADING_INTERVAL,
+ mixer[channel].volume);
+#endif
+}
+
+static void Mixer_InsertSound(SoundControl snd_ctrl)
+{
+ SoundInfo *snd_info;
+ int i, k;
+
+#if 0
+ printf("NEW SOUND %d HAS ARRIVED [%d]\n", snd_ctrl.nr, num_sounds);
+#endif
+
+#if 0
+ printf("%d ACTIVE CHANNELS\n", mixer_active_channels);
+#endif
+
+ if (IS_MUSIC(snd_ctrl))
+ snd_ctrl.nr = snd_ctrl.nr % num_music;
+ else if (snd_ctrl.nr >= num_sounds)
+ return;
+
+ snd_info = (IS_MUSIC(snd_ctrl) ? Music[snd_ctrl.nr] : Sound[snd_ctrl.nr]);
+ if (snd_info == NULL)
+ return;
+
+ /* copy sound sample and format information */
+ snd_ctrl.type = snd_info->type;
+ snd_ctrl.format = snd_info->format;
+ snd_ctrl.data_ptr = snd_info->data_ptr;
+ snd_ctrl.data_len = snd_info->data_len;
+
+ /* play music samples on a dedicated music channel */
+ if (IS_MUSIC(snd_ctrl))
+ {
+#if 0
+ printf("PLAY MUSIC WITH VOLUME/STEREO %d/%d\n",
+ snd_ctrl.volume, snd_ctrl.stereo_position);
+#endif
+
+ mixer[audio.music_channel] = snd_ctrl;
+ Mixer_PlayMusicChannel();
+
+ return;
+ }
+
+ /* check if sound is already being played (and how often) */
+ for (k=0, i=audio.first_sound_channel; i<audio.num_channels; i++)
+ if (mixer[i].active && mixer[i].nr == snd_ctrl.nr)
+ k++;
+
+#if 0
+ printf("SOUND %d [CURRENTLY PLAYING %d TIMES]\n", snd_ctrl.nr, k);
+#endif
+
+ /* reset expiration delay for already playing loop sounds */
+ if (k > 0 && IS_LOOP(snd_ctrl))
+ {
+ for(i=audio.first_sound_channel; i<audio.num_channels; i++)
+ {
+ if (mixer[i].active && mixer[i].nr == snd_ctrl.nr)
+ {
+#if 0
+ printf("RESETTING EXPIRATION FOR SOUND %d\n", snd_ctrl.nr);
+#endif
+
+ if (IS_FADING(mixer[i]))
+ Mixer_UnFadeChannel(i);
+
+ /* restore settings like volume and stereo position */
+ mixer[i].volume = snd_ctrl.volume;
+ mixer[i].stereo_position = snd_ctrl.stereo_position;
+
+ Mixer_SetChannelProperties(i);
+ Mixer_ResetChannelExpiration(i);
+
+#if 0
+ printf("RESETTING VOLUME/STEREO FOR SOUND %d TO %d/%d\n",
+ snd_ctrl.nr, snd_ctrl.volume, snd_ctrl.stereo_position);
+#endif
+ }
+ }
+
+ return;
+ }
+
+ /* don't play sound more than n times simultaneously (with n == 2 for now) */
+ if (k >= 2)
+ {
+ unsigned long playing_current = Counter();
+ int longest = 0, longest_nr = audio.first_sound_channel;
+
+ /* look for oldest equal sound */
+ for(i=audio.first_sound_channel; i<audio.num_channels; i++)
+ {
+ int playing_time = playing_current - mixer[i].playing_starttime;
+ int actual;
+
+ if (!mixer[i].active || mixer[i].nr != snd_ctrl.nr)
+ continue;
+
+ actual = 1000 * playing_time / mixer[i].data_len;
+
+ if (actual >= longest)
+ {
+ longest = actual;
+ longest_nr = i;
+ }
+ }
+
+ Mixer_StopChannel(longest_nr);
+ }
+
+ /* If all (non-music) channels are active, stop the channel that has
+ played its sound sample most completely (in percent of the sample
+ length). As we cannot currently get the actual playing position
+ of the channel's sound sample when compiling with the SDL mixer
+ library, we use the current playing time (in milliseconds) instead. */
+
+ if (mixer_active_channels ==
+ audio.num_channels - (mixer[audio.music_channel].active ? 0 : 1))
+ {
+ unsigned long playing_current = Counter();
+ int longest = 0, longest_nr = audio.first_sound_channel;
+
+ for (i=audio.first_sound_channel; i<audio.num_channels; i++)
+ {
+ int playing_time = playing_current - mixer[i].playing_starttime;
+ int actual = 1000 * playing_time / mixer[i].data_len;
+
+ if (!IS_LOOP(mixer[i]) && actual > longest)
+ {
+ longest = actual;
+ longest_nr = i;
+ }
+ }
+
+ Mixer_StopChannel(longest_nr);
+ }
+
+ /* add the new sound to the mixer */
+ for(i=0; i<audio.num_channels; i++)
+ {
+#if 0
+ printf("CHECKING CHANNEL %d FOR SOUND %d ...\n", i, snd_ctrl.nr);
+#endif
+
+ /*
+ if (!mixer[i].active ||
+ (IS_MUSIC(snd_ctrl) && i == audio.music_channel))
+ */
+ if ((i == audio.music_channel && IS_MUSIC(snd_ctrl)) ||
+ (i != audio.music_channel && !mixer[i].active))
+ {
+#if 0
+ printf("ADDING NEW SOUND %d TO MIXER\n", snd_ctrl.nr);
+#endif
+
+#if 1
+#if defined(AUDIO_UNIX_NATIVE)
+ if (snd_info->data_len == 0)
+ {
+ printf("THIS SHOULD NEVER HAPPEN! [snd_info->data_len == 0]\n");
+ }
+#endif
+#endif
+
+#if 1
+ if (IS_MUSIC(snd_ctrl) && i == audio.music_channel && mixer[i].active)
+ {
+ printf("THIS SHOULD NEVER HAPPEN! [adding music twice]\n");
+
+#if 1
+ Mixer_StopChannel(i);
+#endif
+ }
+#endif
+
+ mixer[i] = snd_ctrl;
+ Mixer_PlayChannel(i);
+
+ break;
+ }
+ }
+}
+
+static void HandleSoundRequest(SoundControl snd_ctrl)
+{
+ int i;
+
+#if defined(AUDIO_UNIX_NATIVE)
+ if (IS_PARENT_PROCESS(audio.mixer_pid))
+ {
+ SendSoundControlToMixerProcess(&snd_ctrl);
+ return;
+ }
+#endif
+
+ /* deactivate channels that have expired since the last request */
+ for (i=0; i<audio.num_channels; i++)
+ if (mixer[i].active && Mixer_ChannelExpired(i))
+ Mixer_StopChannel(i);
+
+ if (IS_RELOADING(snd_ctrl)) /* load new sound or music files */
+ {
+ Mixer_StopMusicChannel();
+ for(i=audio.first_sound_channel; i<audio.num_channels; i++)
+ Mixer_StopChannel(i);
+
+#if defined(AUDIO_UNIX_NATIVE)
+ CloseAudioDevice(&audio.device_fd);
+ ReadReloadInfoFromPipe(&snd_ctrl);
+#endif
+
+ if (snd_ctrl.state & SND_CTRL_RELOAD_SOUNDS)
+ ReloadCustomSounds();
+ else
+ ReloadCustomMusic();
+ }
+ else if (IS_FADING(snd_ctrl)) /* fade out existing sound or music */
+ {
+ if (IS_MUSIC(snd_ctrl))
+ {
+ Mixer_FadeMusicChannel();
+ return;
+ }
+
+ for(i=audio.first_sound_channel; i<audio.num_channels; i++)
+ if (mixer[i].nr == snd_ctrl.nr || ALL_SOUNDS(snd_ctrl))
+ Mixer_FadeChannel(i);
+ }
+ else if (IS_STOPPING(snd_ctrl)) /* stop existing sound or music */
+ {
+ if (IS_MUSIC(snd_ctrl))
+ {
+ Mixer_StopMusicChannel();
+ return;
+ }
+
+ for(i=audio.first_sound_channel; i<audio.num_channels; i++)
+ if (mixer[i].nr == snd_ctrl.nr || ALL_SOUNDS(snd_ctrl))
+ Mixer_StopChannel(i);
+
+#if defined(AUDIO_UNIX_NATIVE)
+ if (!mixer_active_channels)
+ CloseAudioDevice(&audio.device_fd);
+#endif
+ }
+ else if (snd_ctrl.active) /* add new sound to mixer */
+ {
+ Mixer_InsertSound(snd_ctrl);
+ }