2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 // snd_main.c -- main control for any streaming sound output device
28 #define SND_MIN_SPEED 8000
29 #define SND_MAX_SPEED 48000
30 #define SND_MIN_WIDTH 1
31 #define SND_MAX_WIDTH 2
32 #define SND_MIN_CHANNELS 1
33 #define SND_MAX_CHANNELS 8
35 #if SND_LISTENERS != 8
36 # error this data only supports up to 8 channel, update it!
38 typedef struct listener_s
46 typedef struct speakerlayout_s
49 unsigned int channels;
50 listener_t listeners[SND_LISTENERS];
54 static speakerlayout_t snd_speakerlayout;
56 // Our speaker layouts are based on ALSA. They differ from those
57 // Win32 and Mac OS X APIs use when there's more than 4 channels.
58 // (rear left + rear right, and front center + LFE are swapped).
59 #define SND_SPEAKERLAYOUTS (sizeof(snd_speakerlayouts) / sizeof(snd_speakerlayouts[0]))
60 static const speakerlayout_t snd_speakerlayouts[] =
65 {45, 0.2, 0.2, 0.5}, // front left
66 {315, 0.2, 0.2, 0.5}, // front right
67 {135, 0.2, 0.2, 0.5}, // rear left
68 {225, 0.2, 0.2, 0.5}, // rear right
69 {0, 0.2, 0.2, 0.5}, // front center
70 {0, 0, 0, 0}, // lfe (we don't have any good lfe sound sources and it would take some filtering work to generate them (and they'd probably still be wrong), so... no lfe)
71 {90, 0.2, 0.2, 0.5}, // side left
72 {180, 0.2, 0.2, 0.5}, // side right
78 {45, 0.2, 0.2, 0.5}, // front left
79 {315, 0.2, 0.2, 0.5}, // front right
80 {135, 0.2, 0.2, 0.5}, // rear left
81 {225, 0.2, 0.2, 0.5}, // rear right
82 {0, 0.2, 0.2, 0.5}, // front center
83 {0, 0, 0, 0}, // lfe (we don't have any good lfe sound sources and it would take some filtering work to generate them (and they'd probably still be wrong), so... no lfe)
89 // these systems sometimes have a subwoofer as well, but it has no
93 {45, 0.3, 0.3, 0.8}, // front left
94 {315, 0.3, 0.3, 0.8}, // front right
95 {135, 0.3, 0.3, 0.8}, // rear left
96 {225, 0.3, 0.3, 0.8}, // rear right
104 // these systems sometimes have a subwoofer as well, but it has no
105 // channel of its own
108 {90, 0.5, 0.5, 1}, // side left
109 {270, 0.5, 0.5, 1}, // side right
121 {0, 0, 1, 1}, // center
134 // =======================================================================
135 // Internal sound data & structures
136 // =======================================================================
138 channel_t channels[MAX_CHANNELS];
139 unsigned int total_channels;
141 snd_ringbuffer_t *snd_renderbuffer = NULL;
142 unsigned int soundtime = 0;
143 static unsigned int oldpaintedtime = 0;
144 static unsigned int extrasoundtime = 0;
145 static double snd_starttime = 0.0;
147 vec3_t listener_origin;
148 matrix4x4_t listener_matrix[SND_LISTENERS];
149 mempool_t *snd_mempool;
151 // Linked list of known sfx
152 static sfx_t *known_sfx = NULL;
154 static qboolean sound_spatialized = false;
156 qboolean simsound = false;
158 static qboolean recording_sound = false;
161 static int current_swapstereo = false;
162 static int current_channellayout = SND_CHANNELLAYOUT_AUTO;
163 static int current_channellayout_used = SND_CHANNELLAYOUT_AUTO;
165 // Cvars declared in sound.h (part of the sound API)
166 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1", "volume of background music (such as CD music or replacement files such as sound/cdtracks/track002.ogg)"};
167 cvar_t volume = {CVAR_SAVE, "volume", "0.7", "volume of sound effects"};
168 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0", "indicates the sound subsystem is active"};
169 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1", "volume of ambient sound effects (such as swampy sounds at the start of e1m2)"};
170 cvar_t snd_soundradius = {0, "snd_soundradius", "2000", "radius of weapon sounds and other standard sound effects (monster idle noises are half this radius and flickering light noises are one third of this radius)"};
172 // Cvars declared in snd_main.h (shared with other snd_*.c files)
173 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1", "how much sound to mix ahead of time"};
174 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1", "enables keeping compressed ogg sound files compressed, decompressing them only as needed, otherwise they will be decompressed completely at load (may use a lot of memory)"};
175 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0", "swaps left/right speakers for old ISA soundblaster cards"};
176 cvar_t snd_channellayout = {0, "snd_channellayout", "0", "channel layout. Can be 0 (auto - snd_restart needed), 1 (standard layout), or 2 (ALSA layout)"};
179 static cvar_t nosound = {0, "nosound", "0", "disables sound"};
180 static cvar_t snd_precache = {0, "snd_precache", "1", "loads sounds before they are used"};
181 static cvar_t ambient_level = {0, "ambient_level", "0.3", "volume of environment noises (water and wind)"};
182 static cvar_t ambient_fade = {0, "ambient_fade", "100", "rate of volume fading when moving from one environment to another"};
183 static cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0", "disables extra sound mixer calls that are meant to reduce the chance of sound breakup at very low framerates"};
184 static cvar_t snd_show = {0, "snd_show", "0", "shows some statistics about sound mixing"};
186 // Default sound format is 48KHz, 16-bit, stereo
187 // (48KHz because a lot of onboard sound cards sucks at any other speed)
188 static cvar_t snd_speed = {CVAR_SAVE, "snd_speed", "48000", "sound output frequency, in hertz"};
189 static cvar_t snd_width = {CVAR_SAVE, "snd_width", "2", "sound output precision, in bytes (1 and 2 supported)"};
190 static cvar_t snd_channels = {CVAR_SAVE, "snd_channels", "2", "number of channels for the sound ouput (2 for stereo; up to 8 supported for 3D sound)"};
193 static sfx_t* ambient_sfxs [2] = { NULL, NULL };
194 static const char* ambient_names [2] = { "sound/ambience/water1.wav", "sound/ambience/wind2.wav" };
197 // ====================================================================
199 // ====================================================================
201 void S_FreeSfx (sfx_t *sfx, qboolean force);
203 static void S_Play_Common (float fvol, float attenuation)
206 char name [MAX_QPATH];
210 while (i < Cmd_Argc ())
212 // Get the name, and appends ".wav" as an extension if there's none
213 strlcpy (name, Cmd_Argv (i), sizeof (name));
214 if (!strrchr (name, '.'))
215 strlcat (name, ".wav", sizeof (name));
218 // If we need to get the volume from the command line
221 fvol = atof (Cmd_Argv (i));
225 sfx = S_PrecacheSound (name, true, false);
228 ch_ind = S_StartSound (-1, 0, sfx, listener_origin, fvol, attenuation);
230 // Free the sfx if the file didn't exist
232 S_FreeSfx (sfx, false);
234 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
239 static void S_Play_f(void)
241 S_Play_Common (1.0f, 1.0f);
244 static void S_Play2_f(void)
246 S_Play_Common (1.0f, 0.0f);
249 static void S_PlayVol_f(void)
251 S_Play_Common (-1.0f, 0.0f);
254 static void S_SoundList_f (void)
261 for (sfx = known_sfx, i = 0; sfx != NULL; sfx = sfx->next, i++)
263 if (sfx->fetcher != NULL)
266 const snd_format_t* format;
269 format = sfx->fetcher->getfmt(sfx);
270 Con_Printf ("%c%c%c%c(%2db, %6s) %8i : %s\n",
271 (sfx->loopstart >= 0) ? 'L' : ' ',
272 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
273 (sfx->locks > 0) ? 'K' : ' ',
274 (sfx->flags & SFXFLAG_PERMANENTLOCK) ? 'P' : ' ',
276 (format->channels == 1) ? "mono" : "stereo",
282 Con_Printf (" ( unknown ) unloaded : %s\n", sfx->name);
284 Con_Printf("Total resident: %i\n", total);
288 void S_SoundInfo_f(void)
290 if (snd_renderbuffer == NULL)
292 Con_Print("sound system not started\n");
296 Con_Printf("%5d speakers\n", snd_renderbuffer->format.channels);
297 Con_Printf("%5d frames\n", snd_renderbuffer->maxframes);
298 Con_Printf("%5d samplebits\n", snd_renderbuffer->format.width * 8);
299 Con_Printf("%5d speed\n", snd_renderbuffer->format.speed);
300 Con_Printf("%5u total_channels\n", total_channels);
304 int S_GetSoundRate(void)
306 return snd_renderbuffer ? snd_renderbuffer->format.speed : 0;
310 static qboolean S_ChooseCheaperFormat (snd_format_t* format, qboolean fixed_speed, qboolean fixed_width, qboolean fixed_channels)
312 static const snd_format_t thresholds [] =
314 // speed width channels
315 { SND_MIN_SPEED, SND_MIN_WIDTH, SND_MIN_CHANNELS },
320 { SND_MAX_SPEED, SND_MAX_WIDTH, SND_MAX_CHANNELS },
322 const unsigned int nb_thresholds = sizeof(thresholds) / sizeof(thresholds[0]);
323 unsigned int speed_level, width_level, channels_level;
325 // If we have reached the minimum values, there's nothing more we can do
326 if ((format->speed == thresholds[0].speed || fixed_speed) &&
327 (format->width == thresholds[0].width || fixed_width) &&
328 (format->channels == thresholds[0].channels || fixed_channels))
331 // Check the min and max values
332 #define CHECK_BOUNDARIES(param) \
333 if (format->param < thresholds[0].param) \
335 format->param = thresholds[0].param; \
338 if (format->param > thresholds[nb_thresholds - 1].param) \
340 format->param = thresholds[nb_thresholds - 1].param; \
343 CHECK_BOUNDARIES(speed);
344 CHECK_BOUNDARIES(width);
345 CHECK_BOUNDARIES(channels);
346 #undef CHECK_BOUNDARIES
348 // Find the level of each parameter
349 #define FIND_LEVEL(param) \
351 while (param##_level < nb_thresholds - 1) \
353 if (format->param <= thresholds[param##_level].param) \
360 FIND_LEVEL(channels);
363 // Decrease the parameter with the highest level to the previous level
364 if (channels_level >= speed_level && channels_level >= width_level && !fixed_channels)
366 format->channels = thresholds[channels_level - 1].channels;
369 if (speed_level >= width_level && !fixed_speed)
371 format->speed = thresholds[speed_level - 1].speed;
375 format->width = thresholds[width_level - 1].width;
380 #define SWAP_LISTENERS(l1, l2, tmpl) { tmpl = (l1); (l1) = (l2); (l2) = tmpl; }
382 static void S_SetChannelLayout (void)
385 listener_t swaplistener;
386 listener_t *listeners;
389 for (i = 0; i < SND_SPEAKERLAYOUTS; i++)
390 if (snd_speakerlayouts[i].channels == snd_renderbuffer->format.channels)
392 if (i >= SND_SPEAKERLAYOUTS)
394 Con_Printf("S_SetChannelLayout: can't find the speaker layout for %hu channels. Defaulting to mono output\n",
395 snd_renderbuffer->format.channels);
396 i = SND_SPEAKERLAYOUTS - 1;
399 snd_speakerlayout = snd_speakerlayouts[i];
400 listeners = snd_speakerlayout.listeners;
402 // Swap the left and right channels if snd_swapstereo is set
403 if (snd_swapstereo.integer)
405 switch (snd_speakerlayout.channels)
408 SWAP_LISTENERS(listeners[6], listeners[7], swaplistener);
412 SWAP_LISTENERS(listeners[2], listeners[3], swaplistener);
415 SWAP_LISTENERS(listeners[0], listeners[1], swaplistener);
426 if (snd_channellayout.integer < SND_CHANNELLAYOUT_AUTO ||
427 snd_channellayout.integer > SND_CHANNELLAYOUT_ALSA)
428 Cvar_SetValueQuick (&snd_channellayout, SND_CHANNELLAYOUT_STANDARD);
430 if (snd_channellayout.integer == SND_CHANNELLAYOUT_AUTO)
432 // If we're in the sound engine initialization
433 if (current_channellayout_used == SND_CHANNELLAYOUT_AUTO)
435 layout = SND_CHANNELLAYOUT_STANDARD;
436 Cvar_SetValueQuick (&snd_channellayout, layout);
439 layout = current_channellayout_used;
442 layout = snd_channellayout.integer;
444 // Convert our layout (= ALSA) to the standard layout if necessary
445 if (snd_speakerlayout.channels == 6 || snd_speakerlayout.channels == 8)
447 if (layout == SND_CHANNELLAYOUT_STANDARD)
449 SWAP_LISTENERS(listeners[2], listeners[4], swaplistener);
450 SWAP_LISTENERS(listeners[3], listeners[5], swaplistener);
453 Con_Printf("S_SetChannelLayout: using %s speaker layout for 3D sound\n",
454 (layout == SND_CHANNELLAYOUT_ALSA) ? "ALSA" : "standard");
457 current_swapstereo = snd_swapstereo.integer;
458 current_channellayout = snd_channellayout.integer;
459 current_channellayout_used = layout;
463 void S_Startup (void)
465 qboolean fixed_speed, fixed_width, fixed_channels;
466 snd_format_t chosen_fmt;
467 static snd_format_t prev_render_format = {0, 0, 0};
471 if (!snd_initialized.integer)
476 fixed_channels = false;
478 // Get the starting sound format from the cvars
479 chosen_fmt.speed = snd_speed.integer;
480 chosen_fmt.width = snd_width.integer;
481 chosen_fmt.channels = snd_channels.integer;
483 // Check the environment variables to see if the player wants a particular sound format
484 env = getenv("QUAKE_SOUND_CHANNELS");
487 chosen_fmt.channels = atoi (env);
488 fixed_channels = true;
490 env = getenv("QUAKE_SOUND_SPEED");
493 chosen_fmt.speed = atoi (env);
496 env = getenv("QUAKE_SOUND_SAMPLEBITS");
499 chosen_fmt.width = atoi (env) / 8;
503 // Parse the command line to see if the player wants a particular sound format
504 // COMMANDLINEOPTION: Sound: -sndquad sets sound output to 4 channel surround
505 if (COM_CheckParm ("-sndquad") != 0)
507 chosen_fmt.channels = 4;
508 fixed_channels = true;
510 // COMMANDLINEOPTION: Sound: -sndstereo sets sound output to stereo
511 else if (COM_CheckParm ("-sndstereo") != 0)
513 chosen_fmt.channels = 2;
514 fixed_channels = true;
516 // COMMANDLINEOPTION: Sound: -sndmono sets sound output to mono
517 else if (COM_CheckParm ("-sndmono") != 0)
519 chosen_fmt.channels = 1;
520 fixed_channels = true;
522 // COMMANDLINEOPTION: Sound: -sndspeed <hz> chooses sound output rate (supported values are 48000, 44100, 32000, 24000, 22050, 16000, 11025 (quake), 8000)
523 i = COM_CheckParm ("-sndspeed");
524 if (0 < i && i < com_argc - 1)
526 chosen_fmt.speed = atoi (com_argv[i + 1]);
529 // COMMANDLINEOPTION: Sound: -sndbits <bits> chooses 8 bit or 16 bit sound output
530 i = COM_CheckParm ("-sndbits");
531 if (0 < i && i < com_argc - 1)
533 chosen_fmt.width = atoi (com_argv[i + 1]) / 8;
537 // You can't change sound speed after start time (not yet supported)
538 if (prev_render_format.speed != 0)
541 if (chosen_fmt.speed != prev_render_format.speed)
543 Con_Printf("S_Startup: sound speed has changed! This is NOT supported yet. Falling back to previous speed (%u Hz)\n",
544 prev_render_format.speed);
545 chosen_fmt.speed = prev_render_format.speed;
550 if (chosen_fmt.speed < SND_MIN_SPEED)
552 chosen_fmt.speed = SND_MIN_SPEED;
555 else if (chosen_fmt.speed > SND_MAX_SPEED)
557 chosen_fmt.speed = SND_MAX_SPEED;
561 if (chosen_fmt.width < SND_MIN_WIDTH)
563 chosen_fmt.width = SND_MIN_WIDTH;
566 else if (chosen_fmt.width > SND_MAX_WIDTH)
568 chosen_fmt.width = SND_MAX_WIDTH;
572 if (chosen_fmt.channels < SND_MIN_CHANNELS)
574 chosen_fmt.channels = SND_MIN_CHANNELS;
575 fixed_channels = false;
577 else if (chosen_fmt.channels > SND_MAX_CHANNELS)
579 chosen_fmt.channels = SND_MAX_CHANNELS;
580 fixed_channels = false;
583 // create the sound buffer used for sumitting the samples to the plaform-dependent module
586 snd_format_t suggest_fmt;
592 Con_DPrintf("S_Startup: initializing sound output format: %dHz, %d bit, %d channels...\n",
593 chosen_fmt.speed, chosen_fmt.width * 8,
594 chosen_fmt.channels);
596 memset(&suggest_fmt, 0, sizeof(suggest_fmt));
597 accepted = SndSys_Init(&chosen_fmt, &suggest_fmt);
601 Con_DPrintf("S_Startup: sound output initialization FAILED\n");
603 // If the module is suggesting another one
604 if (suggest_fmt.speed != 0)
606 memcpy(&chosen_fmt, &suggest_fmt, sizeof(chosen_fmt));
607 Con_Printf (" Driver has suggested %dHz, %d bit, %d channels. Retrying...\n",
608 suggest_fmt.speed, suggest_fmt.width * 8,
609 suggest_fmt.channels);
611 // Else, try to find a less resource-demanding format
612 else if (!S_ChooseCheaperFormat (&chosen_fmt, fixed_speed, fixed_width, fixed_channels))
617 // If we haven't found a suitable format
620 Con_Print("S_Startup: SndSys_Init failed.\n");
621 sound_spatialized = false;
627 snd_renderbuffer = Snd_CreateRingBuffer(&chosen_fmt, 0, NULL);
628 Con_Print ("S_Startup: simulating sound output\n");
631 memcpy(&prev_render_format, &snd_renderbuffer->format, sizeof(prev_render_format));
632 Con_Printf("Sound format: %dHz, %d channels, %d bits per sample\n",
633 chosen_fmt.speed, chosen_fmt.channels, chosen_fmt.width * 8);
636 if (snd_speed.integer != (int)chosen_fmt.speed)
637 Cvar_SetValueQuick(&snd_speed, chosen_fmt.speed);
638 if (snd_width.integer != chosen_fmt.width)
639 Cvar_SetValueQuick(&snd_width, chosen_fmt.width);
640 if (snd_channels.integer != chosen_fmt.channels)
641 Cvar_SetValueQuick(&snd_channels, chosen_fmt.channels);
643 current_channellayout_used = SND_CHANNELLAYOUT_AUTO;
644 S_SetChannelLayout();
646 snd_starttime = realtime;
648 // If the sound module has already run, add an extra time to make sure
649 // the sound time doesn't decrease, to not confuse playing SFXs
650 if (oldpaintedtime != 0)
652 // The extra time must be a multiple of the render buffer size
653 // to avoid modifying the current position in the buffer,
654 // some modules write directly to a shared (DMA) buffer
655 extrasoundtime = oldpaintedtime + snd_renderbuffer->maxframes - 1;
656 extrasoundtime -= extrasoundtime % snd_renderbuffer->maxframes;
657 Con_DPrintf("S_Startup: extra sound time = %u\n", extrasoundtime);
659 soundtime = extrasoundtime;
663 snd_renderbuffer->startframe = soundtime;
664 snd_renderbuffer->endframe = soundtime;
665 recording_sound = false;
668 void S_Shutdown(void)
670 if (snd_renderbuffer == NULL)
673 oldpaintedtime = snd_renderbuffer->endframe;
677 Mem_Free(snd_renderbuffer->ring);
678 Mem_Free(snd_renderbuffer);
679 snd_renderbuffer = NULL;
684 sound_spatialized = false;
687 void S_Restart_f(void)
700 Con_DPrint("\nSound Initialization\n");
702 Cvar_RegisterVariable(&volume);
703 Cvar_RegisterVariable(&bgmvolume);
704 Cvar_RegisterVariable(&snd_staticvolume);
706 Cvar_RegisterVariable(&snd_speed);
707 Cvar_RegisterVariable(&snd_width);
708 Cvar_RegisterVariable(&snd_channels);
710 // COMMANDLINEOPTION: Sound: -nosound disables sound (including CD audio)
711 if (COM_CheckParm("-nosound"))
714 snd_mempool = Mem_AllocPool("sound", 0, NULL);
716 // COMMANDLINEOPTION: Sound: -simsound runs sound mixing but with no output
717 if (COM_CheckParm("-simsound"))
720 Cmd_AddCommand("play", S_Play_f, "play a sound at your current location (not heard by anyone else)");
721 Cmd_AddCommand("play2", S_Play2_f, "play a sound globally throughout the level (not heard by anyone else)");
722 Cmd_AddCommand("playvol", S_PlayVol_f, "play a sound at the specified volume level at your current location (not heard by anyone else)");
723 Cmd_AddCommand("stopsound", S_StopAllSounds, "silence");
724 Cmd_AddCommand("soundlist", S_SoundList_f, "list loaded sounds");
725 Cmd_AddCommand("soundinfo", S_SoundInfo_f, "print sound system information (such as channels and speed)");
726 Cmd_AddCommand("snd_restart", S_Restart_f, "restart sound system");
727 Cmd_AddCommand("snd_reload", S_Reload_f, "reload all sound files");
729 Cvar_RegisterVariable(&nosound);
730 Cvar_RegisterVariable(&snd_precache);
731 Cvar_RegisterVariable(&snd_initialized);
732 Cvar_RegisterVariable(&snd_streaming);
733 Cvar_RegisterVariable(&ambient_level);
734 Cvar_RegisterVariable(&ambient_fade);
735 Cvar_RegisterVariable(&snd_noextraupdate);
736 Cvar_RegisterVariable(&snd_show);
737 Cvar_RegisterVariable(&_snd_mixahead);
738 Cvar_RegisterVariable(&snd_swapstereo); // for people with backwards sound wiring
739 Cvar_RegisterVariable(&snd_channellayout);
740 Cvar_RegisterVariable(&snd_soundradius);
742 Cvar_SetValueQuick(&snd_initialized, true);
746 total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
747 memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
757 Shutdown and free all resources
760 void S_Terminate (void)
766 while (known_sfx != NULL)
767 S_FreeSfx (known_sfx, true);
769 Cvar_SetValueQuick (&snd_initialized, false);
770 Mem_FreePool (&snd_mempool);
779 void S_Reload_f (void)
783 // stop any active sounds
786 // because the ambient sounds will be freed, clear the pointers
787 for (i = 0;i < (int)sizeof (ambient_sfxs) / (int)sizeof (ambient_sfxs[0]);i++)
788 ambient_sfxs[i] = NULL;
790 // now free all sounds
791 while (known_sfx != NULL)
792 S_FreeSfx (known_sfx, true);
801 sfx_t *S_FindName (const char *name)
805 if (!snd_initialized.integer)
808 if (strlen (name) >= sizeof (sfx->name))
810 Con_Printf ("S_FindName: sound name too long (%s)\n", name);
814 // Look for this sound in the list of known sfx
815 // TODO: hash table search?
816 for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
817 if(!strcmp (sfx->name, name))
820 // Add a sfx_t struct for this sound
821 sfx = (sfx_t *)Mem_Alloc (snd_mempool, sizeof (*sfx));
822 memset (sfx, 0, sizeof(*sfx));
823 strlcpy (sfx->name, name, sizeof (sfx->name));
824 sfx->memsize = sizeof(*sfx);
825 sfx->next = known_sfx;
837 void S_FreeSfx (sfx_t *sfx, qboolean force)
841 // Never free a locked sfx unless forced
842 if (!force && (sfx->locks > 0 || (sfx->flags & SFXFLAG_PERMANENTLOCK)))
845 Con_DPrintf ("S_FreeSfx: freeing %s\n", sfx->name);
847 // Remove it from the list of known sfx
848 if (sfx == known_sfx)
849 known_sfx = known_sfx->next;
854 for (prev_sfx = known_sfx; prev_sfx != NULL; prev_sfx = prev_sfx->next)
855 if (prev_sfx->next == sfx)
857 prev_sfx->next = sfx->next;
860 if (prev_sfx == NULL)
862 Con_Printf ("S_FreeSfx: Can't find SFX %s in the list!\n", sfx->name);
867 // Stop all channels using this sfx
868 for (i = 0; i < total_channels; i++)
869 if (channels[i].sfx == sfx)
873 if (sfx->fetcher != NULL && sfx->fetcher->free != NULL)
874 sfx->fetcher->free (sfx);
884 void S_ServerSounds (char serversound [][MAX_QPATH], unsigned int numsounds)
890 // Start the ambient sounds and make them loop
891 for (i = 0; i < sizeof (ambient_sfxs) / sizeof (ambient_sfxs[0]); i++)
893 // Precache it if it's not done (request a lock to make sure it will never be freed)
894 if (ambient_sfxs[i] == NULL)
895 ambient_sfxs[i] = S_PrecacheSound (ambient_names[i], false, true);
896 if (ambient_sfxs[i] != NULL)
898 // Add a lock to the SFX while playing. It will be
899 // removed by S_StopAllSounds at the end of the level
900 S_LockSfx (ambient_sfxs[i]);
902 channels[i].sfx = ambient_sfxs[i];
903 channels[i].flags |= CHANNELFLAG_FORCELOOP;
904 channels[i].master_vol = 0;
908 // Remove 1 lock from all sfx with the SFXFLAG_SERVERSOUND flag, and remove the flag
909 for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
910 if (sfx->flags & SFXFLAG_SERVERSOUND)
913 sfx->flags &= ~SFXFLAG_SERVERSOUND;
916 // Add 1 lock and the SFXFLAG_SERVERSOUND flag to each sfx in "serversound"
917 for (i = 1; i < numsounds; i++)
919 sfx = S_FindName (serversound[i]);
922 // clear the FILEMISSING flag so that S_LoadSound will try again on a
923 // previously missing file
924 sfx->flags &= ~ SFXFLAG_FILEMISSING;
926 sfx->flags |= SFXFLAG_SERVERSOUND;
930 // Free all unlocked sfx
931 for (sfx = known_sfx;sfx;sfx = sfxnext)
934 S_FreeSfx (sfx, false);
944 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean lock)
948 if (!snd_initialized.integer)
951 if (name == NULL || name[0] == 0)
954 sfx = S_FindName (name);
959 // clear the FILEMISSING flag so that S_LoadSound will try again on a
960 // previously missing file
961 sfx->flags &= ~ SFXFLAG_FILEMISSING;
966 if (!nosound.integer && snd_precache.integer)
967 S_LoadSound(sfx, complain);
977 qboolean S_IsSoundPrecached (const sfx_t *sfx)
979 return (sfx != NULL && sfx->fetcher != NULL);
989 void S_LockSfx (sfx_t *sfx)
998 Remove a lock from a SFX
1001 void S_UnlockSfx (sfx_t *sfx)
1012 void S_BlockSound (void)
1023 void S_UnblockSound (void)
1033 Picks a channel based on priorities, empty slots, number of channels
1036 channel_t *SND_PickChannel(int entnum, int entchannel)
1040 int first_life_left, life_left;
1043 // Check for replacement sound, or find the best one to replace
1045 first_life_left = 0x7fffffff;
1046 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
1048 ch = &channels[ch_idx];
1049 if (entchannel != 0)
1051 // try to override an existing channel
1052 if (ch->entnum == entnum && (ch->entchannel == entchannel || entchannel == -1) )
1054 // always override sound from same entity
1055 first_to_die = ch_idx;
1063 // no sound on this channel
1064 first_to_die = ch_idx;
1071 // don't let monster sounds override player sounds
1072 if (ch->entnum == cl.viewentity && entnum != cl.viewentity)
1075 // don't override looped sounds
1076 if ((ch->flags & CHANNELFLAG_FORCELOOP) || ch->sfx->loopstart >= 0)
1080 life_left = (int)(ch->end - snd_renderbuffer->endframe);
1081 if (life_left < first_life_left)
1083 first_life_left = life_left;
1084 first_to_die = ch_idx;
1088 if (first_to_die == -1)
1091 S_StopChannel (first_to_die);
1093 return &channels[first_to_die];
1100 Spatializes a channel
1103 void SND_Spatialize(channel_t *ch, qboolean isstatic)
1106 vec_t dist, mastervol, intensity, vol;
1109 // update sound origin if we know about the entity
1110 if (ch->entnum > 0 && cls.state == ca_connected && cl.entities[ch->entnum].state_current.active)
1112 //Con_Printf("-- entnum %i origin %f %f %f neworigin %f %f %f\n", ch->entnum, ch->origin[0], ch->origin[1], ch->origin[2], cl.entities[ch->entnum].state_current.origin[0], cl.entities[ch->entnum].state_current.origin[1], cl.entities[ch->entnum].state_current.origin[2]);
1113 VectorCopy(cl.entities[ch->entnum].state_current.origin, ch->origin);
1114 if (cl.entities[ch->entnum].state_current.modelindex && cl.model_precache[cl.entities[ch->entnum].state_current.modelindex] && cl.model_precache[cl.entities[ch->entnum].state_current.modelindex]->soundfromcenter)
1115 VectorMAMAM(1.0f, ch->origin, 0.5f, cl.model_precache[cl.entities[ch->entnum].state_current.modelindex]->normalmins, 0.5f, cl.model_precache[cl.entities[ch->entnum].state_current.modelindex]->normalmaxs, ch->origin);
1118 mastervol = ch->master_vol;
1119 // Adjust volume of static sounds
1121 mastervol *= snd_staticvolume.value;
1123 // anything coming from the view entity will always be full volume
1124 // LordHavoc: make sounds with ATTN_NONE have no spatialization
1125 if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
1127 for (i = 0;i < SND_LISTENERS;i++)
1129 vol = mastervol * snd_speakerlayout.listeners[i].ambientvolume;
1130 ch->listener_volume[i] = (int)bound(0, vol, 255);
1135 // calculate stereo seperation and distance attenuation
1136 VectorSubtract(listener_origin, ch->origin, source_vec);
1137 dist = VectorLength(source_vec);
1138 intensity = mastervol * (1.0 - dist * ch->dist_mult);
1141 for (i = 0;i < SND_LISTENERS;i++)
1143 Matrix4x4_Transform(&listener_matrix[i], ch->origin, source_vec);
1144 VectorNormalize(source_vec);
1145 vol = intensity * max(0, source_vec[0] * snd_speakerlayout.listeners[i].dotscale + snd_speakerlayout.listeners[i].dotbias);
1146 ch->listener_volume[i] = (int)bound(0, vol, 255);
1150 for (i = 0;i < SND_LISTENERS;i++)
1151 ch->listener_volume[i] = 0;
1156 // =======================================================================
1157 // Start a sound effect
1158 // =======================================================================
1160 void S_PlaySfxOnChannel (sfx_t *sfx, channel_t *target_chan, unsigned int flags, vec3_t origin, float fvol, float attenuation, qboolean isstatic)
1162 // Initialize the channel
1163 memset (target_chan, 0, sizeof (*target_chan));
1164 VectorCopy (origin, target_chan->origin);
1165 target_chan->master_vol = (int)(fvol * 255);
1166 target_chan->sfx = sfx;
1167 target_chan->end = snd_renderbuffer->endframe + sfx->total_length;
1168 target_chan->lastptime = snd_renderbuffer->endframe;
1169 target_chan->flags = flags;
1171 // If it's a static sound
1174 if (sfx->loopstart == -1)
1175 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
1176 target_chan->dist_mult = attenuation / (64.0f * snd_soundradius.value);
1179 target_chan->dist_mult = attenuation / snd_soundradius.value;
1181 // Lock the SFX during play
1186 int S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
1188 channel_t *target_chan, *check;
1192 if (snd_renderbuffer == NULL || sfx == NULL || nosound.integer)
1195 if (sfx->fetcher == NULL)
1198 if (entnum && entnum >= cl.max_entities)
1199 CL_ExpandEntities(entnum);
1201 // Pick a channel to play on
1202 target_chan = SND_PickChannel(entnum, entchannel);
1206 S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_NONE, origin, fvol, attenuation, false);
1207 target_chan->entnum = entnum;
1208 target_chan->entchannel = entchannel;
1210 SND_Spatialize(target_chan, false);
1212 // if an identical sound has also been started this frame, offset the pos
1213 // a bit to keep it from just making the first one louder
1214 check = &channels[NUM_AMBIENTS];
1215 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
1217 if (check == target_chan)
1219 if (check->sfx == sfx && !check->pos)
1221 skip = (int)(0.1 * snd_renderbuffer->format.speed);
1222 if (skip > (int)sfx->total_length)
1223 skip = (int)sfx->total_length;
1225 skip = rand() % skip;
1226 target_chan->pos += skip;
1227 target_chan->end -= skip;
1232 return (target_chan - channels);
1235 void S_StopChannel (unsigned int channel_ind)
1239 if (channel_ind >= total_channels)
1242 ch = &channels[channel_ind];
1243 if (ch->sfx != NULL)
1245 sfx_t *sfx = ch->sfx;
1247 if (sfx->fetcher != NULL)
1249 snd_fetcher_endsb_t fetcher_endsb = sfx->fetcher->endsb;
1250 if (fetcher_endsb != NULL)
1254 // Remove the lock it holds
1263 qboolean S_SetChannelFlag (unsigned int ch_ind, unsigned int flag, qboolean value)
1265 if (ch_ind >= total_channels)
1268 if (flag != CHANNELFLAG_FORCELOOP &&
1269 flag != CHANNELFLAG_PAUSED &&
1270 flag != CHANNELFLAG_FULLVOLUME)
1274 channels[ch_ind].flags |= flag;
1276 channels[ch_ind].flags &= ~flag;
1281 void S_StopSound(int entnum, int entchannel)
1285 for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
1286 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
1293 extern void CDAudio_Stop(void);
1294 void S_StopAllSounds (void)
1298 // TOCHECK: is this test necessary?
1299 if (snd_renderbuffer == NULL)
1302 // stop CD audio because it may be using a faketrack
1305 for (i = 0; i < total_channels; i++)
1308 total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
1309 memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
1311 // Mute the contents of the submittion buffer
1312 if (simsound || SndSys_LockRenderBuffer ())
1317 clear = (snd_renderbuffer->format.width == 1) ? 0x80 : 0;
1318 memsize = snd_renderbuffer->maxframes * snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
1319 memset(snd_renderbuffer->ring, clear, memsize);
1322 SndSys_UnlockRenderBuffer ();
1326 void S_PauseGameSounds (qboolean toggle)
1330 for (i = 0; i < total_channels; i++)
1335 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
1336 S_SetChannelFlag (i, CHANNELFLAG_PAUSED, toggle);
1340 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
1342 channels[ch_ind].master_vol = (int)(fvol * 255.0f);
1351 void S_StaticSound (sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
1353 channel_t *target_chan;
1355 if (snd_renderbuffer == NULL || sfx == NULL || nosound.integer)
1359 Con_DPrintf ("S_StaticSound: \"%s\" hasn't been precached\n", sfx->name);
1363 if (total_channels == MAX_CHANNELS)
1365 Con_Print("S_StaticSound: total_channels == MAX_CHANNELS\n");
1369 target_chan = &channels[total_channels++];
1370 S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_FORCELOOP, origin, fvol, attenuation, true);
1372 SND_Spatialize (target_chan, true);
1378 S_UpdateAmbientSounds
1381 void S_UpdateAmbientSounds (void)
1385 int ambient_channel;
1387 unsigned char ambientlevels[NUM_AMBIENTS];
1389 memset(ambientlevels, 0, sizeof(ambientlevels));
1390 if (cl.worldmodel && cl.worldmodel->brush.AmbientSoundLevelsForPoint)
1391 cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_origin, ambientlevels, sizeof(ambientlevels));
1393 // Calc ambient sound levels
1394 for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
1396 chan = &channels[ambient_channel];
1397 if (chan->sfx == NULL || chan->sfx->fetcher == NULL)
1400 vol = (int)ambientlevels[ambient_channel];
1404 // Don't adjust volume too fast
1405 // FIXME: this rounds off to an int each frame, meaning there is little to no fade at extremely high framerates!
1406 if (cl.time > cl.oldtime)
1408 if (chan->master_vol < vol)
1410 chan->master_vol += (int)((cl.time - cl.oldtime) * ambient_fade.value);
1411 if (chan->master_vol > vol)
1412 chan->master_vol = vol;
1414 else if (chan->master_vol > vol)
1416 chan->master_vol -= (int)((cl.time - cl.oldtime) * ambient_fade.value);
1417 if (chan->master_vol < vol)
1418 chan->master_vol = vol;
1422 for (i = 0;i < SND_LISTENERS;i++)
1423 chan->listener_volume[i] = (int)(chan->master_vol * ambient_level.value * snd_speakerlayout.listeners[i].ambientvolume);
1427 static void S_PaintAndSubmit (void)
1429 unsigned int newsoundtime, paintedtime, endtime, maxtime, usedframes;
1430 qboolean usesoundtimehack;
1431 static qboolean soundtimehack = true;
1433 if (snd_renderbuffer == NULL || nosound.integer)
1436 // Update sound time
1437 usesoundtimehack = true;
1438 if (cls.timedemo) // SUPER NASTY HACK to mix non-realtime sound for more reliable benchmarking
1439 newsoundtime = (unsigned int)((double)cl.mtime[0] * (double)snd_renderbuffer->format.speed);
1440 else if (cls.capturevideo.soundrate && !cls.capturevideo.realtime) // SUPER NASTY HACK to record non-realtime sound
1441 newsoundtime = (unsigned int)((double)cls.capturevideo.frame * (double)snd_renderbuffer->format.speed / (double)cls.capturevideo.framerate);
1443 newsoundtime = (unsigned int)((realtime - snd_starttime) * (double)snd_renderbuffer->format.speed);
1446 newsoundtime = SndSys_GetSoundTime();
1447 usesoundtimehack = false;
1449 // if the soundtimehack state changes we need to reset the soundtime
1450 if (soundtimehack != usesoundtimehack)
1452 snd_renderbuffer->startframe = snd_renderbuffer->endframe = soundtime = newsoundtime;
1454 // Mute the contents of the submission buffer
1455 if (simsound || SndSys_LockRenderBuffer ())
1460 clear = (snd_renderbuffer->format.width == 1) ? 0x80 : 0;
1461 memsize = snd_renderbuffer->maxframes * snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
1462 memset(snd_renderbuffer->ring, clear, memsize);
1465 SndSys_UnlockRenderBuffer ();
1468 soundtimehack = usesoundtimehack;
1470 if (!soundtimehack && snd_blocked > 0)
1473 newsoundtime += extrasoundtime;
1474 if (newsoundtime < soundtime)
1476 if ((cls.capturevideo.soundrate != 0) != recording_sound)
1478 unsigned int additionaltime;
1480 // add some time to extrasoundtime make newsoundtime higher
1482 // The extra time must be a multiple of the render buffer size
1483 // to avoid modifying the current position in the buffer,
1484 // some modules write directly to a shared (DMA) buffer
1485 additionaltime = (soundtime - newsoundtime) + snd_renderbuffer->maxframes - 1;
1486 additionaltime -= additionaltime % snd_renderbuffer->maxframes;
1488 extrasoundtime += additionaltime;
1489 newsoundtime += additionaltime;
1490 Con_DPrintf("S_PaintAndSubmit: new extra sound time = %u\n",
1493 else if (!soundtimehack)
1494 Con_Printf("S_PaintAndSubmit: WARNING: newsoundtime < soundtime (%u < %u)\n",
1495 newsoundtime, soundtime);
1497 soundtime = newsoundtime;
1498 recording_sound = (cls.capturevideo.soundrate != 0);
1500 // Check to make sure that we haven't overshot
1501 paintedtime = snd_renderbuffer->endframe;
1502 if (paintedtime < soundtime)
1503 paintedtime = soundtime;
1505 // mix ahead of current position
1506 endtime = soundtime + (unsigned int)(_snd_mixahead.value * (float)snd_renderbuffer->format.speed);
1507 usedframes = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
1508 maxtime = paintedtime + snd_renderbuffer->maxframes - usedframes;
1509 endtime = min(endtime, maxtime);
1511 S_PaintChannels(snd_renderbuffer, paintedtime, endtime);
1514 snd_renderbuffer->startframe = snd_renderbuffer->endframe;
1523 Called once each time through the main loop
1526 void S_Update(const matrix4x4_t *listenermatrix)
1528 unsigned int i, j, total;
1529 channel_t *ch, *combine;
1530 matrix4x4_t basematrix, rotatematrix;
1532 if (snd_renderbuffer == NULL || nosound.integer)
1535 // If snd_swapstereo or snd_channellayout has changed, recompute the channel layout
1536 if (current_swapstereo != snd_swapstereo.integer ||
1537 current_channellayout != snd_channellayout.integer)
1538 S_SetChannelLayout();
1540 Matrix4x4_Invert_Simple(&basematrix, listenermatrix);
1541 Matrix4x4_OriginFromMatrix(listenermatrix, listener_origin);
1543 // calculate the current matrices
1544 for (j = 0;j < SND_LISTENERS;j++)
1546 Matrix4x4_CreateFromQuakeEntity(&rotatematrix, 0, 0, 0, 0, -snd_speakerlayout.listeners[j].yawangle, 0, 1);
1547 Matrix4x4_Concat(&listener_matrix[j], &rotatematrix, &basematrix);
1548 // I think this should now do this:
1549 // 1. create a rotation matrix for rotating by e.g. -90 degrees CCW
1550 // (note: the matrix will rotate the OBJECT, not the VIEWER, so its
1551 // angle has to be taken negative)
1552 // 2. create a transform which first rotates and moves its argument
1553 // into the player's view coordinates (using basematrix which is
1554 // an inverted "absolute" listener matrix), then applies the
1555 // rotation matrix for the ear
1556 // Isn't Matrix4x4_CreateFromQuakeEntity a bit misleading because this
1557 // does not actually refer to an entity?
1560 // update general area ambient sound sources
1561 S_UpdateAmbientSounds ();
1565 // update spatialization for static and dynamic sounds
1566 ch = channels+NUM_AMBIENTS;
1567 for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
1572 // respatialize channel
1573 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);
1575 // try to combine static sounds with a previous channel of the same
1576 // sound effect so we don't mix five torches every frame
1577 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
1579 // no need to merge silent channels
1580 for (j = 0;j < SND_LISTENERS;j++)
1581 if (ch->listener_volume[j])
1583 if (j == SND_LISTENERS)
1585 // if the last combine chosen isn't suitable, find a new one
1586 if (!(combine && combine != ch && combine->sfx == ch->sfx))
1590 for (j = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;j < i;j++)
1592 if (channels[j].sfx == ch->sfx)
1594 combine = channels + j;
1599 if (combine && combine != ch && combine->sfx == ch->sfx)
1601 for (j = 0;j < SND_LISTENERS;j++)
1603 combine->listener_volume[j] += ch->listener_volume[j];
1604 ch->listener_volume[j] = 0;
1610 sound_spatialized = true;
1613 if (snd_show.integer)
1617 for (i=0 ; i<total_channels; i++, ch++)
1621 for (j = 0;j < SND_LISTENERS;j++)
1622 if (ch->listener_volume[j])
1624 if (j < SND_LISTENERS)
1629 Con_Printf("----(%u)----\n", total);
1635 void S_ExtraUpdate (void)
1637 if (snd_noextraupdate.integer || !sound_spatialized)
1643 qboolean S_LocalSound (const char *sound)
1648 if (!snd_initialized.integer || nosound.integer)
1651 sfx = S_PrecacheSound (sound, true, false);
1654 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1658 // Local sounds must not be freed
1659 sfx->flags |= SFXFLAG_PERMANENTLOCK;
1661 ch_ind = S_StartSound (cl.viewentity, 0, sfx, vec3_origin, 1, 0);
1665 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;