Added CoreAudio (Mac OS X) sound driver. Changed / fixed a couple of Mac OS X related...
[divverent/darkplaces.git] / snd_main.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
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.
8
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.
12
13 See the GNU General Public License for more details.
14
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.
18
19 */
20 // snd_main.c -- main control for any streaming sound output device
21
22 #include "quakedef.h"
23
24 #include "snd_main.h"
25 #include "snd_ogg.h"
26
27
28 void S_Play(void);
29 void S_PlayVol(void);
30 void S_Play2(void);
31 void S_SoundList(void);
32 void S_Update_();
33
34
35 // =======================================================================
36 // Internal sound data & structures
37 // =======================================================================
38
39 channel_t channels[MAX_CHANNELS];
40 unsigned int total_channels;
41
42 int snd_blocked = 0;
43 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0"};
44 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1"};
45
46 volatile dma_t *shm = 0;
47 volatile dma_t sn;
48
49 vec3_t listener_origin;
50 matrix4x4_t listener_matrix;
51 vec_t sound_nominal_clip_dist=1000.0;
52 mempool_t *snd_mempool;
53
54 int soundtime;
55 int paintedtime;
56
57 // Linked list of known sfx
58 sfx_t *known_sfx = NULL;
59
60 qboolean sound_started = false;
61 qboolean sound_spatialized = false;
62
63 // Fake dma is a synchronous faking of the DMA progress used for
64 // isolating performance in the renderer.
65 qboolean fakedma = false;
66
67 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
68 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
69 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1"};
70
71 cvar_t nosound = {0, "nosound", "0"};
72 cvar_t snd_precache = {0, "snd_precache", "1"};
73 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
74 cvar_t ambient_level = {0, "ambient_level", "0.3"};
75 cvar_t ambient_fade = {0, "ambient_fade", "100"};
76 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
77 cvar_t snd_show = {0, "snd_show", "0"};
78 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
79 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
80
81 // Ambient sounds
82 sfx_t* ambient_sfxs [2] = { NULL, NULL };
83 const char* ambient_names [2] = { "sound/ambience/water1.wav", "sound/ambience/wind2.wav" };
84
85
86 // ====================================================================
87 // Functions
88 // ====================================================================
89
90 void S_FreeSfx (sfx_t *sfx, qboolean force);
91
92
93 void S_SoundInfo_f(void)
94 {
95         if (!sound_started)
96         {
97                 Con_Print("sound system not started\n");
98                 return;
99         }
100
101         Con_Printf("%5d stereo\n", shm->format.channels - 1);
102         Con_Printf("%5d samples\n", shm->samples);
103         Con_Printf("%5d samplepos\n", shm->samplepos);
104         Con_Printf("%5d samplebits\n", shm->format.width * 8);
105         Con_Printf("%5d speed\n", shm->format.speed);
106         Con_Printf("%p dma buffer\n", shm->buffer);
107         Con_Printf("%5u total_channels\n", total_channels);
108 }
109
110
111 void S_Startup(void)
112 {
113         if (!snd_initialized.integer)
114                 return;
115
116         shm = &sn;
117         memset((void *)shm, 0, sizeof(*shm));
118
119         // create a piece of DMA memory
120         if (fakedma)
121         {
122                 shm->format.width = 2;
123                 shm->format.speed = 22050;
124                 shm->format.channels = 2;
125                 shm->samples = 32768;
126                 shm->samplepos = 0;
127                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
128         }
129         else
130         {
131                 if (!SNDDMA_Init())
132                 {
133                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
134                         shm = NULL;
135                         sound_started = false;
136                         sound_spatialized = false;
137                         return;
138                 }
139         }
140
141         sound_started = true;
142
143         Con_Printf("Sound format: %dHz, %d bit, %d channels\n", shm->format.speed,
144                            shm->format.width * 8, shm->format.channels);
145 }
146
147 void S_Shutdown(void)
148 {
149         if (!sound_started)
150                 return;
151
152         if (fakedma)
153                 Mem_Free(shm->buffer);
154         else
155                 SNDDMA_Shutdown();
156
157         shm = NULL;
158         sound_started = false;
159         sound_spatialized = false;
160 }
161
162 void S_Restart_f(void)
163 {
164         S_Shutdown();
165         S_Startup();
166 }
167
168 /*
169 ================
170 S_Init
171 ================
172 */
173 void S_Init(void)
174 {
175         Con_DPrint("\nSound Initialization\n");
176
177         Cvar_RegisterVariable(&volume);
178         Cvar_RegisterVariable(&bgmvolume);
179         Cvar_RegisterVariable(&snd_staticvolume);
180
181 // COMMANDLINEOPTION: Sound: -nosound disables sound (including CD audio)
182         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
183                 return;
184
185         snd_mempool = Mem_AllocPool("sound", 0, NULL);
186
187 // COMMANDLINEOPTION: Sound: -simsound runs sound mixing but with no output
188         if (COM_CheckParm("-simsound"))
189                 fakedma = true;
190
191         Cmd_AddCommand("play", S_Play);
192         Cmd_AddCommand("play2", S_Play2);
193         Cmd_AddCommand("playvol", S_PlayVol);
194         Cmd_AddCommand("stopsound", S_StopAllSounds);
195         Cmd_AddCommand("soundlist", S_SoundList);
196         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
197         Cmd_AddCommand("snd_restart", S_Restart_f);
198
199         Cvar_RegisterVariable(&nosound);
200         Cvar_RegisterVariable(&snd_precache);
201         Cvar_RegisterVariable(&snd_initialized);
202         Cvar_RegisterVariable(&snd_streaming);
203         Cvar_RegisterVariable(&bgmbuffer);
204         Cvar_RegisterVariable(&ambient_level);
205         Cvar_RegisterVariable(&ambient_fade);
206         Cvar_RegisterVariable(&snd_noextraupdate);
207         Cvar_RegisterVariable(&snd_show);
208         Cvar_RegisterVariable(&_snd_mixahead);
209         Cvar_RegisterVariable(&snd_swapstereo); // for people with backwards sound wiring
210
211         Cvar_SetValueQuick(&snd_initialized, true);
212
213         known_sfx = NULL;
214
215         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
216         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
217
218         OGG_OpenLibrary ();
219 }
220
221
222 /*
223 ================
224 S_Terminate
225
226 Shutdown and free all resources
227 ================
228 */
229 void S_Terminate (void)
230 {
231         S_Shutdown ();
232         OGG_CloseLibrary ();
233
234         // Free all SFXs
235         while (known_sfx != NULL)
236                 S_FreeSfx (known_sfx, true);
237
238         Cvar_SetValueQuick (&snd_initialized, false);
239         Mem_FreePool (&snd_mempool);
240 }
241
242
243 // =======================================================================
244 // Load a sound
245 // =======================================================================
246
247 /*
248 ==================
249 S_FindName
250
251 ==================
252 */
253 sfx_t *S_FindName (const char *name)
254 {
255         sfx_t *sfx;
256
257         if (!snd_initialized.integer)
258                 return NULL;
259
260         if (strlen (name) >= sizeof (sfx->name))
261         {
262                 Con_Printf ("S_FindName: sound name too long (%s)", name);
263                 return NULL;
264         }
265
266         // Look for this sound in the list of known sfx
267         for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
268                 if(!strcmp (sfx->name, name))
269                         return sfx;
270
271         // Add a sfx_t struct for this sound
272         sfx = Mem_Alloc (snd_mempool, sizeof (*sfx));
273         memset (sfx, 0, sizeof(*sfx));
274         strlcpy (sfx->name, name, sizeof (sfx->name));
275         sfx->next = known_sfx;
276         known_sfx = sfx;
277
278         return sfx;
279 }
280
281
282 /*
283 ==================
284 S_FreeSfx
285
286 ==================
287 */
288 void S_FreeSfx (sfx_t *sfx, qboolean force)
289 {
290         // Never free a locked sfx unless forced
291         if (!force && (sfx->locks > 0 || (sfx->flags & SFXFLAG_PERMANENTLOCK)))
292                 return;
293
294         Con_DPrintf ("S_FreeSfx: freeing %s\n", sfx->name);
295
296         // Remove it from the list of known sfx
297         if (sfx == known_sfx)
298                 known_sfx = known_sfx->next;
299         else
300         {
301                 sfx_t *prev_sfx;
302
303                 for (prev_sfx = known_sfx; prev_sfx != NULL; prev_sfx = prev_sfx->next)
304                         if (prev_sfx->next == sfx)
305                         {
306                                 prev_sfx->next = sfx->next;
307                                 break;
308                         }
309                 if (prev_sfx == NULL)
310                 {
311                         Con_Printf ("S_FreeSfx: Can't find SFX %s in the list!\n", sfx->name);
312                         return;
313                 }
314         }
315
316         // Free it
317         Mem_FreePool (&sfx->mempool);
318         Mem_Free (sfx);
319 }
320
321
322 /*
323 ==================
324 S_ServerSounds
325
326 ==================
327 */
328 void S_ServerSounds (char serversound [][MAX_QPATH], unsigned int numsounds)
329 {
330         sfx_t *sfx;
331         sfx_t *sfxnext;
332         unsigned int i;
333
334         // Start the ambient sounds and make them loop
335         for (i = 0; i < sizeof (ambient_sfxs) / sizeof (ambient_sfxs[0]); i++)
336         {
337                 // Precache it if it's not done (request a lock to make sure it will never be freed)
338                 if (ambient_sfxs[i] == NULL)
339                         ambient_sfxs[i] = S_PrecacheSound (ambient_names[i], false, true);
340                 if (ambient_sfxs[i] != NULL)
341                 {
342                         // Add a lock to the SFX while playing. It will be
343                         // removed by S_StopAllSounds at the end of the level
344                         S_LockSfx (ambient_sfxs[i]);
345
346                         channels[i].sfx = ambient_sfxs[i];
347                         channels[i].flags |= CHANNELFLAG_FORCELOOP;
348                         channels[i].master_vol = 0;
349                 }
350         }
351
352         // Remove 1 lock from all sfx with the SFXFLAG_SERVERSOUND flag, and remove the flag
353         for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
354                 if (sfx->flags & SFXFLAG_SERVERSOUND)
355                 {
356                         S_UnlockSfx (sfx);
357                         sfx->flags &= ~SFXFLAG_SERVERSOUND;
358                 }
359
360         // Add 1 lock and the SFXFLAG_SERVERSOUND flag to each sfx in "serversound"
361         for (i = 1; i < numsounds; i++)
362         {
363                 sfx = S_FindName (serversound[i]);
364                 if (sfx != NULL)
365                 {
366                         S_LockSfx (sfx);
367                         sfx->flags |= SFXFLAG_SERVERSOUND;
368                 }
369         }
370
371         // Free all unlocked sfx
372         for (sfx = known_sfx;sfx;sfx = sfxnext)
373         {
374                 sfxnext = sfx->next;
375                 S_FreeSfx (sfx, false);
376         }
377 }
378
379
380 /*
381 ==================
382 S_PrecacheSound
383
384 ==================
385 */
386 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean lock)
387 {
388         sfx_t *sfx;
389
390         if (!snd_initialized.integer)
391                 return NULL;
392
393         sfx = S_FindName (name);
394         if (sfx == NULL)
395                 return NULL;
396
397         if (lock)
398                 S_LockSfx (sfx);
399
400         if (!nosound.integer && snd_precache.integer)
401                 S_LoadSound(sfx, complain);
402
403         return sfx;
404 }
405
406 /*
407 ==================
408 S_LockSfx
409
410 Add a lock to a SFX
411 ==================
412 */
413 void S_LockSfx (sfx_t *sfx)
414 {
415         sfx->locks++;
416 }
417
418 /*
419 ==================
420 S_UnlockSfx
421
422 Remove a lock from a SFX
423 ==================
424 */
425 void S_UnlockSfx (sfx_t *sfx)
426 {
427         sfx->locks--;
428 }
429
430
431 //=============================================================================
432
433 /*
434 =================
435 SND_PickChannel
436
437 Picks a channel based on priorities, empty slots, number of channels
438 =================
439 */
440 channel_t *SND_PickChannel(int entnum, int entchannel)
441 {
442         int ch_idx;
443         int first_to_die;
444         int life_left;
445         channel_t* ch;
446
447 // Check for replacement sound, or find the best one to replace
448         first_to_die = -1;
449         life_left = 0x7fffffff;
450         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
451         {
452                 ch = &channels[ch_idx];
453                 if (entchannel != 0             // channel 0 never overrides
454                 && ch->entnum == entnum
455                 && (ch->entchannel == entchannel || entchannel == -1) )
456                 {       // always override sound from same entity
457                         first_to_die = ch_idx;
458                         break;
459                 }
460
461                 // don't let monster sounds override player sounds
462                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
463                         continue;
464
465                 // don't override looped sounds
466                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
467                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
468                         continue;
469
470                 if (ch->end - paintedtime < life_left)
471                 {
472                         life_left = ch->end - paintedtime;
473                         first_to_die = ch_idx;
474                 }
475         }
476
477         if (first_to_die == -1)
478                 return NULL;
479
480         S_StopChannel (first_to_die);
481
482         return &channels[first_to_die];
483 }
484
485 /*
486 =================
487 SND_Spatialize
488
489 Spatializes a channel
490 =================
491 */
492 void SND_Spatialize(channel_t *ch, qboolean isstatic)
493 {
494         vec_t dist, scale, pan;
495         vec3_t source_vec;
496
497         // anything coming from the view entity will always be full volume
498         // LordHavoc: make sounds with ATTN_NONE have no spatialization
499         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
500         {
501                 ch->leftvol = ch->master_vol;
502                 ch->rightvol = ch->master_vol;
503         }
504         else
505         {
506                 // update sound origin if we know about the entity
507                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].render.model)
508                 {
509                         //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].persistent.trail_origin[0], cl_entities[ch->entnum].persistent.trail_origin[1], cl_entities[ch->entnum].persistent.trail_origin[2]);
510                         VectorCopy(cl_entities[ch->entnum].persistent.trail_origin, ch->origin);
511                 }
512
513                 // calculate stereo seperation and distance attenuation
514                 Matrix4x4_Transform(&listener_matrix, ch->origin, source_vec);
515                 dist = VectorNormalizeLength(source_vec);
516                 // distance
517                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
518                 // panning
519                 pan = scale * source_vec[1];
520                 // calculate the volumes
521                 ch->leftvol = (int) (scale + pan);
522                 ch->rightvol = (int) (scale - pan);
523                 //Con_Printf("%f %f %f:%f %f %f:%f %f:%d %d\n", ch->origin[0], ch->origin[1], ch->origin[2], source_vec[0], source_vec[1], source_vec[2], scale, pan, ch->leftvol, ch->rightvol);
524         }
525
526         // Adjust volume of static sounds
527         if (isstatic)
528         {
529                 ch->leftvol *= snd_staticvolume.value;
530                 ch->rightvol *= snd_staticvolume.value;
531         }
532
533         // clamp volumes
534         ch->leftvol = bound(0, ch->leftvol, 255);
535         ch->rightvol = bound(0, ch->rightvol, 255);
536 }
537
538
539 // =======================================================================
540 // Start a sound effect
541 // =======================================================================
542
543 void S_PlaySfxOnChannel (sfx_t *sfx, channel_t *target_chan, unsigned int flags, vec3_t origin, float fvol, float attenuation, qboolean isstatic)
544 {
545         // Initialize the channel
546         memset (target_chan, 0, sizeof (*target_chan));
547         VectorCopy (origin, target_chan->origin);
548         target_chan->master_vol = fvol * 255;
549         target_chan->sfx = sfx;
550         target_chan->end = paintedtime + sfx->total_length;
551         target_chan->lastptime = paintedtime;
552         target_chan->flags = flags;
553
554         // If it's a static sound
555         if (isstatic)
556         {
557                 if (sfx->loopstart == -1)
558                         Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
559                 target_chan->dist_mult = attenuation / (64.0f * sound_nominal_clip_dist);
560         }
561         else
562                 target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
563
564         // Lock the SFX during play
565         S_LockSfx (sfx);
566 }
567
568
569 int S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
570 {
571         channel_t *target_chan, *check;
572         int             ch_idx;
573         int             skip;
574
575         if (!sound_started || !sfx || nosound.integer)
576                 return -1;
577         if (!sfx->fetcher)
578         {
579                 Con_DPrintf ("S_StartSound: \"%s\" hasn't been precached\n", sfx->name);
580                 return -1;
581         }
582
583         if (entnum && entnum >= cl_max_entities)
584                 CL_ExpandEntities(entnum);
585
586         // Pick a channel to play on
587         target_chan = SND_PickChannel(entnum, entchannel);
588         if (!target_chan)
589                 return -1;
590
591         S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_NONE, origin, fvol, attenuation, false);
592         target_chan->entnum = entnum;
593         target_chan->entchannel = entchannel;
594
595         SND_Spatialize(target_chan, false);
596
597         // if an identical sound has also been started this frame, offset the pos
598         // a bit to keep it from just making the first one louder
599         check = &channels[NUM_AMBIENTS];
600         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
601         {
602                 if (check == target_chan)
603                         continue;
604                 if (check->sfx == sfx && !check->pos)
605                 {
606                         skip = 0.1 * sfx->format.speed;
607                         if (skip > (int)sfx->total_length)
608                                 skip = (int)sfx->total_length;
609                         if (skip > 0)
610                                 skip = rand() % skip;
611                         target_chan->pos += skip;
612                         target_chan->end -= skip;
613                         break;
614                 }
615         }
616
617         return (target_chan - channels);
618 }
619
620 void S_StopChannel (unsigned int channel_ind)
621 {
622         channel_t *ch;
623
624         if (channel_ind >= total_channels)
625                 return;
626
627         ch = &channels[channel_ind];
628         if (ch->sfx != NULL)
629         {
630                 sfx_t *sfx = ch->sfx;
631
632                 if (sfx->fetcher != NULL)
633                 {
634                         snd_fetcher_end_t fetcher_end = sfx->fetcher->end;
635                         if (fetcher_end != NULL)
636                                 fetcher_end (ch);
637                 }
638
639                 // Remove the lock it holds
640                 S_UnlockSfx (sfx);
641
642                 ch->sfx = NULL;
643         }
644         ch->end = 0;
645 }
646
647
648 qboolean S_SetChannelFlag (unsigned int ch_ind, unsigned int flag, qboolean value)
649 {
650         if (ch_ind >= total_channels)
651                 return false;
652
653         if (flag != CHANNELFLAG_FORCELOOP &&
654                 flag != CHANNELFLAG_PAUSED &&
655                 flag != CHANNELFLAG_FULLVOLUME)
656                 return false;
657
658         if (value)
659                 channels[ch_ind].flags |= flag;
660         else
661                 channels[ch_ind].flags &= ~flag;
662
663         return true;
664 }
665
666 void S_StopSound(int entnum, int entchannel)
667 {
668         unsigned int i;
669
670         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
671                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
672                 {
673                         S_StopChannel (i);
674                         return;
675                 }
676 }
677
678 void S_StopAllSounds (void)
679 {
680         unsigned int i;
681         unsigned char *pbuf;
682
683         if (!sound_started)
684                 return;
685
686         for (i = 0; i < total_channels; i++)
687                 S_StopChannel (i);
688
689         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
690         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
691
692         // Clear sound buffer
693         pbuf = S_LockBuffer();
694         if (pbuf != NULL)
695         {
696                 int setsize = shm->samples * shm->format.width;
697                 int     clear = (shm->format.width == 1) ? 0x80 : 0;
698
699                 // FIXME: is it (still) true? (check with OSS and ALSA)
700                 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
701                 // reads the memory area before writing to it causing a seg fault
702                 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
703                 //memset(shm->buffer, clear, shm->samples * shm->format.width);
704                 while (setsize--)
705                         *pbuf++ = clear;
706
707                 S_UnlockBuffer ();
708         }
709 }
710
711 void S_PauseGameSounds (qboolean toggle)
712 {
713         unsigned int i;
714
715         for (i = 0; i < total_channels; i++)
716         {
717                 channel_t *ch;
718
719                 ch = &channels[i];
720                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
721                         S_SetChannelFlag (i, CHANNELFLAG_PAUSED, toggle);
722         }
723 }
724
725 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
726 {
727         channels[ch_ind].master_vol = fvol * 255;
728 }
729
730
731 /*
732 =================
733 S_StaticSound
734 =================
735 */
736 void S_StaticSound (sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
737 {
738         channel_t       *target_chan;
739
740         if (!sound_started || !sfx || nosound.integer)
741                 return;
742         if (!sfx->fetcher)
743         {
744                 Con_DPrintf ("S_StaticSound: \"%s\" hasn't been precached\n", sfx->name);
745                 return;
746         }
747
748         if (total_channels == MAX_CHANNELS)
749         {
750                 Con_Print("S_StaticSound: total_channels == MAX_CHANNELS\n");
751                 return;
752         }
753
754         target_chan = &channels[total_channels++];
755         S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_FORCELOOP, origin, fvol, attenuation, true);
756
757         SND_Spatialize (target_chan, true);
758 }
759
760
761 //=============================================================================
762
763 /*
764 ===================
765 S_UpdateAmbientSounds
766
767 ===================
768 */
769 void S_UpdateAmbientSounds (void)
770 {
771         float           vol;
772         int                     ambient_channel;
773         channel_t       *chan;
774         qbyte           ambientlevels[NUM_AMBIENTS];
775
776         if (ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
777                 return;
778
779         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_origin, ambientlevels, sizeof(ambientlevels));
780
781         // Calc ambient sound levels
782         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
783         {
784                 chan = &channels[ambient_channel];
785                 if (chan->sfx == NULL || chan->sfx->fetcher == NULL)
786                         continue;
787
788                 vol = ambient_level.value * ambientlevels[ambient_channel];
789                 if (vol < 8)
790                         vol = 0;
791
792                 // Don't adjust volume too fast
793                 if (chan->master_vol < vol)
794                 {
795                         chan->master_vol += host_realframetime * ambient_fade.value;
796                         if (chan->master_vol > vol)
797                                 chan->master_vol = vol;
798                 }
799                 else if (chan->master_vol > vol)
800                 {
801                         chan->master_vol -= host_realframetime * ambient_fade.value;
802                         if (chan->master_vol < vol)
803                                 chan->master_vol = vol;
804                 }
805
806                 chan->leftvol = chan->rightvol = chan->master_vol;
807         }
808 }
809
810
811 /*
812 ============
813 S_Update
814
815 Called once each time through the main loop
816 ============
817 */
818 void S_Update(const matrix4x4_t *listenermatrix)
819 {
820         unsigned int i, j, total;
821         channel_t *ch, *combine;
822
823         if (!snd_initialized.integer || (snd_blocked > 0))
824                 return;
825
826         Matrix4x4_Invert_Simple(&listener_matrix, listenermatrix);
827         Matrix4x4_OriginFromMatrix(listenermatrix, listener_origin);
828
829         // update general area ambient sound sources
830         S_UpdateAmbientSounds ();
831
832         combine = NULL;
833
834         // update spatialization for static and dynamic sounds
835         ch = channels+NUM_AMBIENTS;
836         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
837         {
838                 if (!ch->sfx)
839                         continue;
840                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
841                 if (!ch->leftvol && !ch->rightvol)
842                         continue;
843
844                 // try to combine static sounds with a previous channel of the same
845                 // sound effect so we don't mix five torches every frame
846                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
847                 {
848                         // see if it can just use the last one
849                         if (combine && combine->sfx == ch->sfx)
850                         {
851                                 combine->leftvol += ch->leftvol;
852                                 combine->rightvol += ch->rightvol;
853                                 ch->leftvol = ch->rightvol = 0;
854                                 continue;
855                         }
856                         // search for one
857                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
858                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
859                                 if (combine->sfx == ch->sfx)
860                                         break;
861
862                         if (j == total_channels)
863                                 combine = NULL;
864                         else
865                         {
866                                 if (combine != ch)
867                                 {
868                                         combine->leftvol += ch->leftvol;
869                                         combine->rightvol += ch->rightvol;
870                                         ch->leftvol = ch->rightvol = 0;
871                                 }
872                                 continue;
873                         }
874                 }
875         }
876
877         sound_spatialized = true;
878
879         // debugging output
880         if (snd_show.integer)
881         {
882                 total = 0;
883                 ch = channels;
884                 for (i=0 ; i<total_channels; i++, ch++)
885                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
886                                 total++;
887
888                 Con_Printf("----(%u)----\n", total);
889         }
890
891         S_Update_();
892 }
893
894 void GetSoundtime(void)
895 {
896         int             samplepos;
897         static  int             buffers;
898         static  int             oldsamplepos;
899         int             fullsamples;
900
901         fullsamples = shm->samples / shm->format.channels;
902
903         // it is possible to miscount buffers if it has wrapped twice between
904         // calls to S_Update.  Oh well.
905         samplepos = SNDDMA_GetDMAPos();
906
907         if (samplepos < oldsamplepos)
908         {
909                 buffers++;                                      // buffer wrapped
910
911                 if (paintedtime > 0x40000000)
912                 {       // time to chop things off to avoid 32 bit limits
913                         buffers = 0;
914                         paintedtime = fullsamples;
915                         S_StopAllSounds ();
916                 }
917         }
918         oldsamplepos = samplepos;
919
920         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
921 }
922
923 void S_ExtraUpdate (void)
924 {
925         if (snd_noextraupdate.integer || !sound_spatialized)
926                 return;
927
928         S_Update_();
929 }
930
931 void S_Update_(void)
932 {
933         unsigned        endtime;
934         int                             samps;
935
936         if (!sound_started || (snd_blocked > 0))
937                 return;
938
939         // Updates DMA time
940         GetSoundtime();
941
942         // check to make sure that we haven't overshot
943         if (paintedtime < soundtime)
944                 paintedtime = soundtime;
945
946         // mix ahead of current position
947         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
948         samps = shm->samples >> (shm->format.channels - 1);
949         if (endtime > (unsigned int)(soundtime + samps))
950                 endtime = soundtime + samps;
951
952         S_PaintChannels (endtime);
953
954         SNDDMA_Submit ();
955 }
956
957 /*
958 ===============================================================================
959
960 console functions
961
962 ===============================================================================
963 */
964
965 static void S_Play_Common(float fvol, float attenuation)
966 {
967         int     i, ch_ind;
968         char name[256];
969         sfx_t   *sfx;
970
971         i = 1;
972         while (i<Cmd_Argc())
973         {
974                 // Get the name
975                 strlcpy(name, Cmd_Argv(i), sizeof(name));
976                 if (!strrchr(name, '.'))
977                         strlcat(name, ".wav", sizeof(name));
978                 i++;
979
980                 // If we need to get the volume from the command line
981                 if (fvol == -1.0f)
982                 {
983                         fvol = atof(Cmd_Argv(i));
984                         i++;
985                 }
986
987                 sfx = S_PrecacheSound (name, true, false);
988                 if (sfx)
989                 {
990                         ch_ind = S_StartSound(-1, 0, sfx, listener_origin, fvol, attenuation);
991
992                         // Free the sfx if the file didn't exist
993                         if (ch_ind < 0)
994                                 S_FreeSfx (sfx, false);
995                         else
996                                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
997                 }
998         }
999 }
1000
1001 void S_Play(void)
1002 {
1003         S_Play_Common (1.0f, 1.0f);
1004 }
1005
1006 void S_Play2(void)
1007 {
1008         S_Play_Common (1.0f, 0.0f);
1009 }
1010
1011 void S_PlayVol(void)
1012 {
1013         S_Play_Common (-1.0f, 0.0f);
1014 }
1015
1016 void S_SoundList(void)
1017 {
1018         unsigned int i;
1019         sfx_t   *sfx;
1020         int             size, total;
1021
1022         total = 0;
1023         for (sfx = known_sfx, i = 0; sfx != NULL; sfx = sfx->next, i++)
1024         {
1025                 if (sfx->fetcher != NULL)
1026                 {
1027                         size = (int)sfx->mempool->totalsize;
1028                         total += size;
1029                         Con_Printf ("%c%c%c%c(%2db, %6s) %8i : %s\n",
1030                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1031                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1032                                                 (sfx->locks > 0) ? 'K' : ' ',
1033                                                 (sfx->flags & SFXFLAG_PERMANENTLOCK) ? 'P' : ' ',
1034                                                 sfx->format.width * 8,
1035                                                 (sfx->format.channels == 1) ? "mono" : "stereo",
1036                                                 size,
1037                                                 sfx->name);
1038                 }
1039                 else
1040                         Con_Printf ("    (  unknown  ) unloaded : %s\n", sfx->name);
1041         }
1042         Con_Printf("Total resident: %i\n", total);
1043 }
1044
1045
1046 qboolean S_LocalSound (const char *sound)
1047 {
1048         sfx_t   *sfx;
1049         int             ch_ind;
1050
1051         if (!snd_initialized.integer || nosound.integer)
1052                 return true;
1053
1054         sfx = S_PrecacheSound (sound, true, false);
1055         if (!sfx)
1056         {
1057                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1058                 return false;
1059         }
1060
1061         // Local sounds must not be freed
1062         sfx->flags |= SFXFLAG_PERMANENTLOCK;
1063
1064         ch_ind = S_StartSound (cl.viewentity, 0, sfx, vec3_origin, 1, 0);
1065         if (ch_ind < 0)
1066                 return false;
1067
1068         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1069         return true;
1070 }