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