X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsound.c;h=ceeee1477b532295520d29efda50b861118f410c;hb=77570cca460afce38d688221214f93f0c6d0a8c9;hp=c876945f8ea45374b15367616433530435bf27d4;hpb=40bb242e83c3e4df5da57a052d42e1d2c37bf69d;p=rocksndiamonds.git diff --git a/src/libgame/sound.c b/src/libgame/sound.c index c876945f..ceeee147 100644 --- a/src/libgame/sound.c +++ b/src/libgame/sound.c @@ -24,6 +24,9 @@ #include "setup.h" +#define IS_PARENT_PROCESS(pid) ((pid) > 0) +#define IS_CHILD_PROCESS(pid) ((pid) == 0) + struct ListNode { char *key; @@ -49,30 +52,30 @@ static int num_sounds = 0, num_music = 0; /* ========================================================================= */ /* THE STUFF BELOW IS ONLY USED BY THE SOUND SERVER CHILD PROCESS */ -static struct AudioFormatInfo afmt; -static struct SoundControl playlist[NUM_MIXER_CHANNELS]; -static int playing_sounds = 0; +static struct SoundControl mixer[NUM_MIXER_CHANNELS]; +static int mixer_active_channels = 0; -/* forward declaration of internal functions */ -static void SoundServer_InsertNewSound(struct SoundControl); -static void InitAudioDevice(struct AudioFormatInfo *); +#if defined(AUDIO_UNIX_NATIVE) +static struct AudioFormatInfo afmt; -#if defined(PLATFORM_UNIX) +static void Mixer_Main(void); #if !defined(AUDIO_STREAMING_DSP) static unsigned char linear_to_ulaw(int); static int ulaw_to_linear(unsigned char); #endif -#elif defined(PLATFORM_MSDOS) -static void SoundServer_InsertNewSound(struct SoundControl); -static void SoundServer_StopSound(struct SoundControl); -static void SoundServer_StopAllSounds(); #endif static void ReloadCustomSounds(); static void ReloadCustomMusic(); static void FreeSound(void *); -#if defined(PLATFORM_UNIX) + +/* ------------------------------------------------------------------------- */ +/* functions for native (non-SDL) Unix audio/mixer support */ +/* ------------------------------------------------------------------------- */ + +#if defined(AUDIO_UNIX_NATIVE) + static int OpenAudioDevice(char *audio_device_name) { int audio_device_fd; @@ -129,34 +132,27 @@ static boolean TestAudioDevices(void) return TRUE; } -#if !defined(TARGET_SDL) static boolean ForkAudioProcess(void) { - if (pipe(audio.soundserver_pipe) < 0) + if (pipe(audio.mixer_pipe) < 0) { Error(ERR_WARN, "cannot create pipe -- no sounds"); return FALSE; } - if ((audio.soundserver_pid = fork()) < 0) + if ((audio.mixer_pid = fork()) < 0) { Error(ERR_WARN, "cannot create sound server process -- no sounds"); return FALSE; } - if (audio.soundserver_pid == 0) /* we are child process */ - { - SoundServer(); - - /* never reached */ - exit(0); - } - else /* we are parent */ - close(audio.soundserver_pipe[0]); /* no reading from pipe needed */ + if (IS_CHILD_PROCESS(audio.mixer_pid)) + Mixer_Main(); /* this function never returns */ + else + close(audio.mixer_pipe[0]); /* no reading from pipe needed */ return TRUE; } -#endif void UnixOpenAudio(void) { @@ -181,42 +177,232 @@ void UnixCloseAudio(void) if (audio.device_fd) close(audio.device_fd); - if (audio.soundserver_pid > 0) /* we are parent process */ - kill(audio.soundserver_pid, SIGTERM); + 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) { - struct SoundControl snd_ctrl; + 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.soundserver_pipe[1], &snd_ctrl, + if (write(audio.mixer_pipe[1], &snd_ctrl, sizeof(snd_ctrl)) < 0 || - write(audio.soundserver_pipe[1], set_name, + write(audio.mixer_pipe[1], set_name, snd_ctrl.data_len) < 0 || - write(audio.soundserver_pipe[1], leveldir_current, + write(audio.mixer_pipe[1], leveldir_current, sizeof(TreeInfo)) < 0 || - write(audio.soundserver_pipe[1], ti, + write(audio.mixer_pipe[1], ti, sizeof(TreeInfo)) < 0 || - write(audio.soundserver_pipe[1], &str_size1, + write(audio.mixer_pipe[1], &str_size1, sizeof(unsigned long)) < 0 || - write(audio.soundserver_pipe[1], &str_size2, + write(audio.mixer_pipe[1], &str_size2, sizeof(unsigned long)) < 0 || - write(audio.soundserver_pipe[1], &str_size3, + write(audio.mixer_pipe[1], &str_size3, sizeof(unsigned long)) < 0 || - write(audio.soundserver_pipe[1], leveldir_current->fullpath, + write(audio.mixer_pipe[1], leveldir_current->fullpath, str_size1) < 0 || - write(audio.soundserver_pipe[1], ti->basepath, + write(audio.mixer_pipe[1], ti->basepath, str_size2) < 0 || - write(audio.soundserver_pipe[1], ti->fullpath, + write(audio.mixer_pipe[1], ti->fullpath, str_size3) < 0) { Error(ERR_WARN, "cannot pipe to child process -- no sounds"); @@ -225,9 +411,9 @@ static void WriteReloadInfoToPipe(char *set_name, int type) } } -static void ReadReloadInfoFromPipe(struct SoundControl snd_ctrl) +static void ReadReloadInfoFromPipe(SoundControl *snd_ctrl) { - TreeInfo **ti_ptr = ((snd_ctrl.state & SND_CTRL_RELOAD_SOUNDS) ? + 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; @@ -236,7 +422,7 @@ static void ReadReloadInfoFromPipe(struct SoundControl snd_ctrl) if (set_name) free(set_name); - set_name = checked_malloc(snd_ctrl.data_len); + set_name = checked_malloc(snd_ctrl->data_len); if (leveldir_current == NULL) leveldir_current = checked_calloc(sizeof(TreeInfo)); @@ -249,17 +435,17 @@ static void ReadReloadInfoFromPipe(struct SoundControl snd_ctrl) if (ti->fullpath != NULL) free(ti->fullpath); - if (read(audio.soundserver_pipe[0], set_name, - snd_ctrl.data_len) != snd_ctrl.data_len || - read(audio.soundserver_pipe[0], leveldir_current, + 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.soundserver_pipe[0], ti, + read(audio.mixer_pipe[0], ti, sizeof(TreeInfo)) != sizeof(TreeInfo) || - read(audio.soundserver_pipe[0], &str_size1, + read(audio.mixer_pipe[0], &str_size1, sizeof(unsigned long)) != sizeof(unsigned long) || - read(audio.soundserver_pipe[0], &str_size2, + read(audio.mixer_pipe[0], &str_size2, sizeof(unsigned long)) != sizeof(unsigned long) || - read(audio.soundserver_pipe[0], &str_size3, + read(audio.mixer_pipe[0], &str_size3, sizeof(unsigned long)) != sizeof(unsigned long)) Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds"); @@ -267,44 +453,157 @@ static void ReadReloadInfoFromPipe(struct SoundControl snd_ctrl) ti->basepath = checked_calloc(str_size2); ti->fullpath = checked_calloc(str_size3); - if (read(audio.soundserver_pipe[0], leveldir_current->fullpath, + if (read(audio.mixer_pipe[0], leveldir_current->fullpath, str_size1) != str_size1 || - read(audio.soundserver_pipe[0], ti->basepath, + read(audio.mixer_pipe[0], ti->basepath, str_size2) != str_size2 || - read(audio.soundserver_pipe[0], ti->fullpath, + 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) + if (snd_ctrl->state & SND_CTRL_RELOAD_SOUNDS) artwork.sounds_set_current = set_name; else artwork.music_set_current = set_name; } -#endif /* PLATFORM_UNIX */ -void InitPlaylist(void) +#endif /* AUDIO_UNIX_NATIVE */ + + +/* ------------------------------------------------------------------------- */ +/* mixer functions */ +/* ------------------------------------------------------------------------- */ + +void Mixer_InitChannels() { int i; for(i=0; i %d [%d]\n", Mix_Playing(channel), Mix_Playing(0)); +#endif +#endif + + if (!mixer[channel].active) + return; + +#if defined(TARGET_SDL) + Mix_HaltChannel(channel); +#elif defined(PLATFORM_MSDOS) + voice_set_volume(mixer[channel].voice, 0); + deallocate_voice(mixer[channel].voice); #endif - playlist[pos].active = FALSE; - playing_sounds--; + mixer[channel].active = FALSE; + mixer_active_channels--; } -static void PlaylistInsertSound(struct SoundControl snd_ctrl) +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(PLATFORM_MSDOS) + 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 = PSND_MAX_VOLUME; + +#if defined(TARGET_SDL) + Mix_ExpireChannel(channel, -1); + Mix_Volume(channel, SOUND_MAX_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; @@ -313,6 +612,10 @@ static void PlaylistInsertSound(struct SoundControl snd_ctrl) 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) @@ -320,79 +623,34 @@ static void PlaylistInsertSound(struct SoundControl snd_ctrl) snd_info = (IS_MUSIC(snd_ctrl) ? Music[snd_ctrl.nr] : Sound[snd_ctrl.nr]); if (snd_info == NULL) - { -#if 0 - printf("sound/music %d undefined\n", snd_ctrl.nr); -#endif return; - } -#if 0 - printf("-> %d\n", playing_sounds); -#endif - - if (playing_sounds == audio.num_channels) - { - for (i=0; itype; + snd_ctrl.format = snd_info->format; + snd_ctrl.data_ptr = snd_info->data_ptr; + snd_ctrl.data_len = snd_info->data_len; - /* if playlist is full, remove oldest sound */ - if (playing_sounds == audio.num_channels) + /* play music samples on a dedicated music channel */ + if (IS_MUSIC(snd_ctrl)) { - int longest = 0, longest_nr = audio.first_sound_channel; - - for (i=audio.first_sound_channel; i longest) - { - longest = actual; - longest_nr = i; - } - } -#if defined(PLATFORM_MSDOS) - voice_set_volume(playlist[longest_nr].voice, 0); - deallocate_voice(playlist[longest_nr].voice); -#endif - PlaylistRemoveSound(longest_nr); + return; } /* check if sound is already being played (and how often) */ for (k=0, i=audio.first_sound_channel; i= 1 && IS_LOOP(snd_ctrl)) { for(i=audio.first_sound_channel; i= 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= longest) { longest = actual; @@ -422,14 +683,41 @@ static void PlaylistInsertSound(struct SoundControl snd_ctrl) } } -#if defined(PLATFORM_MSDOS) - voice_set_volume(playlist[longest_nr].voice, 0); - deallocate_voice(playlist[longest_nr].voice); + 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 longest) + { + longest = actual; + longest_nr = i; + } + } + + Mixer_StopChannel(longest_nr); } - /* add new sound to playlist */ + /* add new sound to mixer */ for(i=0; idata_ptr; - snd_ctrl.data_len = snd_info->data_len; - snd_ctrl.format = snd_info->format; - - snd_ctrl.playingpos = 0; - snd_ctrl.playingtime = 0; +#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 && playlist[i].active) + if (IS_MUSIC(snd_ctrl) && i == audio.music_channel && mixer[i].active) { printf("THIS SHOULD NEVER HAPPEN! [adding music twice]\n"); #if 1 - PlaylistRemoveSound(i); + Mixer_StopChannel(i); #endif } #endif - playlist[i] = snd_ctrl; - playing_sounds++; - -#if 0 - printf("NEW SOUND %d ADDED TO PLAYLIST\n", snd_ctrl.nr); -#endif - -#if defined(PLATFORM_MSDOS) - playlist[i].voice = allocate_voice((SAMPLE *)playlist[i].data_ptr); + mixer[i] = snd_ctrl; + Mixer_PlayChannel(i); - if (snd_ctrl.loop) - voice_set_playmode(playlist[i].voice, PLAYMODE_LOOP); - - voice_set_volume(playlist[i].voice, snd_ctrl.volume); - voice_set_pan(playlist[i].voice, snd_ctrl.stereo); - voice_start(playlist[i].voice); -#endif break; } } } -static void HandleSoundRequest(struct SoundControl snd_ctrl) +static void HandleSoundRequest(SoundControl snd_ctrl) { int i; +#if defined(AUDIO_UNIX_NATIVE) + if (IS_PARENT_PROCESS(audio.mixer_pid)) + { + SendSoundControlToMixerProcess(&snd_ctrl); + return; + } +#elif defined(TARGET_SDL) + for (i=0; imajor, + link_version->minor, + link_version->patch); +#endif + if (!audio.sound_available) return; -#if defined(PLATFORM_UNIX) && !defined(TARGET_SDL) +#if defined(AUDIO_UNIX_NATIVE) if (!ForkAudioProcess()) audio.sound_available = FALSE; #endif } -#if defined(PLATFORM_UNIX) && !defined(TARGET_SDL) +#if defined(AUDIO_UNIX_NATIVE) -static void CopySampleToMixingBuffer(struct SoundControl *snd_ctrl, +static void CopySampleToMixingBuffer(SoundControl *snd_ctrl, int sample_pos, int sample_size, short *buffer_ptr) { @@ -575,7 +889,7 @@ static void CopySampleToMixingBuffer(struct SoundControl *snd_ctrl, } #if defined(AUDIO_STREAMING_DSP) -static void SoundServer_Mixer() +static void Mixer_Main_DSP() { static int stereo_volume[PSND_MAX_LEFT2RIGHT + 1]; static boolean stereo_volume_calculated = FALSE; @@ -599,7 +913,7 @@ static void SoundServer_Mixer() stereo_volume_calculated = TRUE; } - if (!playing_sounds) + if (!mixer_active_channels) return; if (audio.device_fd < 0) @@ -626,29 +940,29 @@ static void SoundServer_Mixer() int sample_pos; int sample_size; - if (!playlist[i].active) + if (!mixer[i].active) continue; /* pointer, lenght and actual playing position of sound sample */ - sample_ptr = playlist[i].data_ptr; - sample_len = playlist[i].data_len; - sample_pos = playlist[i].playingpos; + sample_ptr = mixer[i].data_ptr; + sample_len = mixer[i].data_len; + sample_pos = mixer[i].playing_pos; sample_size = MIN(max_sample_size, sample_len - sample_pos); - playlist[i].playingpos += sample_size; + mixer[i].playing_pos += sample_size; /* copy original sample to first mixing buffer */ - CopySampleToMixingBuffer(&playlist[i], sample_pos, sample_size, + CopySampleToMixingBuffer(&mixer[i], sample_pos, sample_size, premix_first_buffer); /* are we about to restart a looping sound? */ - if (IS_LOOP(playlist[i]) && sample_size < max_sample_size) + if (IS_LOOP(mixer[i]) && sample_size < max_sample_size) { while (sample_size < max_sample_size) { int restarted_sample_size = MIN(max_sample_size - sample_size, sample_len); - if (playlist[i].format == AUDIO_FORMAT_U8) + if (mixer[i].format == AUDIO_FORMAT_U8) for (j=0; j= SOUND_FADING_VOLUME_THRESHOLD) - playlist[i].volume -= SOUND_FADING_VOLUME_STEP; + if (IS_FADING(mixer[i]) && + mixer[i].volume >= SOUND_FADING_VOLUME_THRESHOLD) + mixer[i].volume -= SOUND_FADING_VOLUME_STEP; /* adjust volume of actual sound sample */ - if (playlist[i].volume != PSND_MAX_VOLUME) + if (mixer[i].volume != PSND_MAX_VOLUME) for(j=0; j> PSND_MAX_VOLUME_BITS; /* fill the last mixing buffer with stereo or mono sound */ if (stereo) { int middle_pos = PSND_MAX_LEFT2RIGHT / 2; - int left_volume = stereo_volume[middle_pos + playlist[i].stereo]; - int right_volume= stereo_volume[middle_pos - playlist[i].stereo]; + int left_volume = stereo_volume[middle_pos + mixer[i].stereo_position]; + int right_volume= stereo_volume[middle_pos - mixer[i].stereo_position]; for(j=0; j= playlist[i].data_len) + /* delete completed sound entries from the mixer */ + if (mixer[i].playing_pos >= mixer[i].data_len) { - if (IS_LOOP(playlist[i])) - playlist[i].playingpos = 0; + if (IS_LOOP(mixer[i])) + mixer[i].playing_pos = 0; else - PlaylistRemoveSound(i); + Mixer_StopChannel(i); } - else if (playlist[i].volume <= SOUND_FADING_VOLUME_THRESHOLD) - PlaylistRemoveSound(i); + else if (mixer[i].volume <= SOUND_FADING_VOLUME_THRESHOLD) + Mixer_StopChannel(i); } /* prepare final playing buffer according to system audio format */ @@ -743,13 +1057,13 @@ static void SoundServer_Mixer() /* finally play the sound fragment */ write(audio.device_fd, playing_buffer, fragment_size); - if (!playing_sounds) + if (!mixer_active_channels) CloseAudioDevice(&audio.device_fd); } #else /* !AUDIO_STREAMING_DSP */ -static int SoundServer_SimpleAudio(struct SoundControl snd_ctrl) +static int Mixer_Main_SimpleAudio(SoundControl snd_ctrl) { static short premix_first_buffer[SND_BLOCKSIZE]; static byte playing_buffer[SND_BLOCKSIZE]; @@ -760,416 +1074,125 @@ static int SoundServer_SimpleAudio(struct SoundControl snd_ctrl) int sample_size; int i, j; - i = 1; - - /* pointer, lenght and actual playing position of sound sample */ - sample_ptr = playlist[i].data_ptr; - sample_len = playlist[i].data_len; - sample_pos = playlist[i].playingpos; - sample_size = MIN(max_sample_size, sample_len - sample_pos); - playlist[i].playingpos += sample_size; - - /* copy original sample to first mixing buffer */ - CopySampleToMixingBuffer(&playlist[i], sample_pos, sample_size, - premix_first_buffer); - - /* adjust volume of actual sound sample */ - if (playlist[i].volume != PSND_MAX_VOLUME) - for(j=0; j> PSND_MAX_VOLUME_BITS; - - /* might be needed for u-law /dev/audio */ -#if 0 - for(j=0; j= playlist[i].data_len) - PlaylistRemoveSound(i); - - for(i=0; i> 8) ^ 0x80; - - /* 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; ifragment_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; + i = 1; - /* 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 */ + /* pointer, lenght and actual playing position of sound sample */ + sample_ptr = mixer[i].data_ptr; + sample_len = mixer[i].data_len; + sample_pos = mixer[i].playing_pos; + sample_size = MIN(max_sample_size, sample_len - sample_pos); + mixer[i].playing_pos += sample_size; - 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"); + /* copy original sample to first mixing buffer */ + CopySampleToMixingBuffer(&mixer[i], sample_pos, sample_size, + premix_first_buffer); - 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; - } - } + /* adjust volume of actual sound sample */ + if (mixer[i].volume != PSND_MAX_VOLUME) + for(j=0; j> PSND_MAX_VOLUME_BITS; - if (afmt->format == 0) /* no supported audio format found */ - Error(ERR_EXIT_SOUND_SERVER, - "cannot set audio format of /dev/dsp -- no sounds"); + /* might be needed for u-law /dev/audio */ +#if 0 + for(j=0; jstereo = TRUE; - if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0) - afmt->stereo = FALSE; + /* delete completed sound entries from the mixer */ + if (mixer[i].playing_pos >= mixer[i].data_len) + Mixer_StopChannel(i); - 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"); + for(i=0; i> 8) ^ 0x80; - /* 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"); + /* finally play the sound fragment */ + write(audio.device_fd, playing_buffer, sample_size); + + return sample_size; } -#endif /* AUDIO_LINUX_IOCTL */ +#endif /* !AUDIO_STREAMING_DSP */ -#if defined(PLATFORM_NETBSD) -static void InitAudioDevice_NetBSD(struct AudioFormatInfo *afmt) +void Mixer_Main() { - audio_info_t a_info; - boolean stereo = TRUE; + SoundControl snd_ctrl; + fd_set mixer_fdset; - 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; + close(audio.mixer_pipe[1]); /* no writing into pipe needed */ - afmt->format = AUDIO_FORMAT_U8; - afmt->stereo = TRUE; + Mixer_InitChannels(); - if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0) +#if defined(PLATFORM_HPUX) + InitAudioDevice(&afmt); +#endif + + FD_ZERO(&mixer_fdset); + FD_SET(audio.mixer_pipe[0], &mixer_fdset); + + while(1) /* wait for sound playing commands from client */ { - /* try to disable stereo */ - a_info.play.channels = 1; + struct timeval delay = { 0, 0 }; - afmt->stereo = FALSE; + FD_SET(audio.mixer_pipe[0], &mixer_fdset); + select(audio.mixer_pipe[0] + 1, &mixer_fdset, NULL, NULL, NULL); + if (!FD_ISSET(audio.mixer_pipe[0], &mixer_fdset)) + continue; - 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 */ + ReadSoundControlFromMainProcess(&snd_ctrl); -#if defined(PLATFORM_HPUX) -static void InitAudioDevice_HPUX(struct AudioFormatInfo *afmt) -{ - struct audio_describe ainfo; - int audio_ctl; + HandleSoundRequest(snd_ctrl); - 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 defined(AUDIO_STREAMING_DSP) - if (ioctl(audio_ctl, AUDIO_DESCRIBE, &ainfo) == -1) - Error(ERR_EXIT_SOUND_SERVER, "no audio info -- no sounds"); + while (mixer_active_channels && + select(audio.mixer_pipe[0] + 1, + &mixer_fdset, NULL, NULL, &delay) < 1) + { + FD_SET(audio.mixer_pipe[0], &mixer_fdset); - if (ioctl(audio_ctl, AUDIO_SET_DATA_FORMAT, AUDIO_FORMAT_ULAW) == -1) - Error(ERR_EXIT_SOUND_SERVER, "ulaw audio not available -- no sounds"); + Mixer_Main_DSP(); + } - ioctl(audio_ctl, AUDIO_SET_CHANNELS, 1); - ioctl(audio_ctl, AUDIO_SET_SAMPLE_RATE, 8000); +#else /* !AUDIO_STREAMING_DSP */ - afmt->format = AUDIO_FORMAT_U8; - afmt->stereo = FALSE; - afmt->sample_rate = 8000; + if (!snd_ctrl.active || IS_LOOP(snd_ctrl) || + (audio.device_fd = OpenAudioDevice(audio.device_name)) < 0) + continue; - close(audio_ctl); -} -#endif /* PLATFORM_HPUX */ + InitAudioDevice(&afmt); -#if defined(PLATFORM_UNIX) -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; + delay.tv_sec = 0; + delay.tv_usec = 0; -#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 + while (mixer_active_channels && + select(audio.mixer_pipe[0] + 1, + &mixer_fdset, NULL, NULL, &delay) < 1) + { + int wait_percent = 90; /* wait 90% of the real playing time */ + int sample_size; + + FD_SET(audio.mixer_pipe[0], &mixer_fdset); + + sample_size = Mixer_Main_SimpleAudio(snd_ctrl); + + delay.tv_sec = 0; + delay.tv_usec = + ((sample_size * 10 * wait_percent) / afmt.sample_rate) * 1000; + } + + CloseAudioDevice(&audio.device_fd); + + Mixer_InitChannels(); /* remove all sounds from mixer */ + +#endif /* !AUDIO_STREAMING_DSP */ + } } -#endif /* PLATFORM_UNIX */ +#endif /* AUDIO_UNIX_NATIVE */ -#if defined(PLATFORM_UNIX) && !defined(AUDIO_STREAMING_DSP) + +#if defined(AUDIO_UNIX_NATIVE) && !defined(AUDIO_STREAMING_DSP) /* these two are stolen from "sox"... :) */ @@ -1274,7 +1297,7 @@ static int ulaw_to_linear(unsigned char ulawbyte) return(sample); } -#endif /* PLATFORM_UNIX && !AUDIO_STREAMING_DSP */ +#endif /* AUDIO_UNIX_NATIVE && !AUDIO_STREAMING_DSP */ /* THE STUFF ABOVE IS ONLY USED BY THE SOUND SERVER CHILD PROCESS */ @@ -1313,6 +1336,8 @@ static SoundInfo *Load_WAV(char *filename) return NULL; } + snd_info->data_len = ((Mix_Chunk *)snd_info->data_ptr)->alen; + #elif defined(TARGET_ALLEGRO) if ((snd_info->data_ptr = load_sample(filename)) == NULL) @@ -1322,7 +1347,9 @@ static SoundInfo *Load_WAV(char *filename) return NULL; } -#else /* PLATFORM_UNIX */ + snd_info->data_len = ((SAMPLE *)snd_info->data_ptr)->len; + +#else /* AUDIO_UNIX_NATIVE */ if ((file = fopen(filename, MODE_READ)) == NULL) { @@ -1397,7 +1424,7 @@ static SoundInfo *Load_WAV(char *filename) snd_info->format = AUDIO_FORMAT_U8; -#endif /* PLATFORM_UNIX */ +#endif /* AUDIO_UNIX_NATIVE */ snd_info->type = SND_TYPE_WAV; snd_info->source_filename = getStringCopy(filename); @@ -1590,26 +1617,7 @@ void PlayMusic(int nr) if (!audio.music_available) return; -#if defined(TARGET_SDL) - - nr = nr % num_music; - - if (Music[nr]->type == MUS_TYPE_MOD) - { - Mix_PlayMusic(Music[nr]->data_ptr, -1); - Mix_VolumeMusic(SOUND_MAX_VOLUME); /* must be _after_ Mix_PlayMusic()! */ - } - else /* play WAV music loop */ - { - Mix_Volume(audio.music_channel, SOUND_MAX_VOLUME); - Mix_PlayChannel(audio.music_channel, Music[nr]->data_ptr, -1); - } - -#else - PlaySoundMusic(nr); - -#endif } void PlaySound(int nr) @@ -1617,9 +1625,9 @@ void PlaySound(int nr) PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, SND_CTRL_PLAY_SOUND); } -void PlaySoundStereo(int nr, int stereo) +void PlaySoundStereo(int nr, int stereo_position) { - PlaySoundExt(nr, PSND_MAX_VOLUME, stereo, SND_CTRL_PLAY_SOUND); + PlaySoundExt(nr, PSND_MAX_VOLUME, stereo_position, SND_CTRL_PLAY_SOUND); } void PlaySoundLoop(int nr) @@ -1632,9 +1640,9 @@ void PlaySoundMusic(int nr) PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, SND_CTRL_PLAY_MUSIC); } -void PlaySoundExt(int nr, int volume, int stereo, int state) +void PlaySoundExt(int nr, int volume, int stereo_position, int state) { - struct SoundControl snd_ctrl; + SoundControl snd_ctrl; if (!audio.sound_available || !audio.sound_enabled || @@ -1646,49 +1654,26 @@ void PlaySoundExt(int nr, int volume, int stereo, int state) else if (volume > PSND_MAX_VOLUME) volume = PSND_MAX_VOLUME; - if (stereo < PSND_MAX_LEFT) - stereo = PSND_MAX_LEFT; - else if (stereo > PSND_MAX_RIGHT) - stereo = PSND_MAX_RIGHT; + if (stereo_position < PSND_MAX_LEFT) + stereo_position = PSND_MAX_LEFT; + else if (stereo_position > PSND_MAX_RIGHT) + stereo_position = PSND_MAX_RIGHT; snd_ctrl.active = TRUE; - snd_ctrl.nr = nr; + snd_ctrl.nr = nr; snd_ctrl.volume = volume; - snd_ctrl.stereo = stereo; - snd_ctrl.state = state; - -#if defined(TARGET_SDL) - if (Sound[nr]) - { - Mix_Volume(-1, SOUND_MAX_VOLUME); - Mix_PlayChannel(-1, Sound[nr]->data_ptr, (state & SND_CTRL_LOOP ? -1 : 0)); - } -#elif defined(PLATFORM_UNIX) - if (audio.soundserver_pid == 0) /* we are child process */ - return; + snd_ctrl.stereo_position = stereo_position; + snd_ctrl.state = state; - if (write(audio.soundserver_pipe[1], &snd_ctrl, sizeof(snd_ctrl)) < 0) - { - Error(ERR_WARN, "cannot pipe to child process -- no sounds"); - audio.sound_available = audio.sound_enabled = FALSE; - return; - } -#elif defined(PLATFORM_MSDOS) - sound_handler(snd_ctrl); -#endif + HandleSoundRequest(snd_ctrl); } void FadeMusic(void) { - if (!audio.sound_available) + if (!audio.music_available) return; -#if defined(TARGET_SDL) - Mix_FadeOutMusic(SOUND_FADING_INTERVAL); - Mix_FadeOutChannel(audio.music_channel, SOUND_FADING_INTERVAL); -#else StopSoundExt(-1, SND_CTRL_FADE_MUSIC); -#endif } void FadeSound(int nr) @@ -1704,15 +1689,10 @@ void FadeSounds() void StopMusic(void) { -#if defined(TARGET_SDL) - if (!audio.sound_available) + if (!audio.music_available) return; - Mix_HaltMusic(); - Mix_HaltChannel(audio.music_channel); -#else StopSoundExt(-1, SND_CTRL_STOP_MUSIC); -#endif } void StopSound(int nr) @@ -1728,56 +1708,16 @@ void StopSounds() void StopSoundExt(int nr, int state) { - struct SoundControl snd_ctrl; + SoundControl snd_ctrl; if (!audio.sound_available) return; snd_ctrl.active = FALSE; - snd_ctrl.nr = nr; - snd_ctrl.state = state; - -#if defined(TARGET_SDL) - - if (state & SND_CTRL_FADE) - { - int i; - - /* - for (i=audio.first_sound_channel; ifullpath, - str_size1) < 0 || - write(audio.soundserver_pipe[1], ti->basepath, - str_size2) < 0 || - write(audio.soundserver_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; - } -#endif - + ReloadCustomSounds(); +#elif defined(AUDIO_UNIX_NATIVE) + WriteReloadInfoToPipe(set_name, SND_CTRL_RELOAD_SOUNDS); #endif } -void InitReloadSounds(char *set_name) -{ - InitReloadSoundsOrMusic(set_name, SND_CTRL_RELOAD_SOUNDS); -} - void InitReloadMusic(char *set_name) { - InitReloadSoundsOrMusic(set_name, SND_CTRL_RELOAD_MUSIC); + if (!audio.music_available) + return; + +#if defined(TARGET_SDL) || defined(TARGET_ALLEGRO) + ReloadCustomMusic(); +#elif defined(AUDIO_UNIX_NATIVE) + WriteReloadInfoToPipe(set_name, SND_CTRL_RELOAD_MUSIC); +#endif } void FreeSound(void *ptr) @@ -2009,7 +1908,7 @@ void FreeSound(void *ptr) Mix_FreeChunk(sound->data_ptr); #elif defined(TARGET_ALLEGRO) destroy_sample(sound->data_ptr); -#else /* PLATFORM_UNIX */ +#else /* AUDIO_UNIX_NATIVE */ free(sound->data_ptr); #endif } @@ -2034,7 +1933,7 @@ void FreeMusic(MusicInfo *music) Mix_FreeChunk(music->data_ptr); #elif defined(TARGET_ALLEGRO) destroy_sample(music->data_ptr); -#else /* PLATFORM_UNIX */ +#else /* AUDIO_UNIX_NATIVE */ free(music->data_ptr); #endif } @@ -2050,7 +1949,7 @@ void FreeAllSounds() return; printf("%s: FREEING SOUNDS ...\n", - audio.soundserver_pid == 0 ? "CHILD" : "PARENT"); + IS_CHILD_PROCESS(audio.mixer_pid) ? "CHILD" : "PARENT"); for(i=0; i