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
26 #include "snd_modplug.h"
29 #define SND_MIN_SPEED 8000
30 #define SND_MAX_SPEED 96000
31 #define SND_MIN_WIDTH 1
32 #define SND_MAX_WIDTH 2
33 #define SND_MIN_CHANNELS 1
34 #define SND_MAX_CHANNELS 8
36 #if SND_LISTENERS != 8
37 # error this data only supports up to 8 channel, update it!
39 typedef struct listener_s
47 typedef struct speakerlayout_s
50 unsigned int channels;
51 listener_t listeners[SND_LISTENERS];
55 static speakerlayout_t snd_speakerlayout;
57 // Our speaker layouts are based on ALSA. They differ from those
58 // Win32 and Mac OS X APIs use when there's more than 4 channels.
59 // (rear left + rear right, and front center + LFE are swapped).
60 #define SND_SPEAKERLAYOUTS (sizeof(snd_speakerlayouts) / sizeof(snd_speakerlayouts[0]))
61 static const speakerlayout_t snd_speakerlayouts[] =
66 {45, 0.2, 0.2, 0.5}, // front left
67 {315, 0.2, 0.2, 0.5}, // front right
68 {135, 0.2, 0.2, 0.5}, // rear left
69 {225, 0.2, 0.2, 0.5}, // rear right
70 {0, 0.2, 0.2, 0.5}, // front center
71 {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)
72 {90, 0.2, 0.2, 0.5}, // side left
73 {180, 0.2, 0.2, 0.5}, // side right
79 {45, 0.2, 0.2, 0.5}, // front left
80 {315, 0.2, 0.2, 0.5}, // front right
81 {135, 0.2, 0.2, 0.5}, // rear left
82 {225, 0.2, 0.2, 0.5}, // rear right
83 {0, 0.2, 0.2, 0.5}, // front center
84 {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)
90 // these systems sometimes have a subwoofer as well, but it has no
94 {45, 0.3, 0.3, 0.8}, // front left
95 {315, 0.3, 0.3, 0.8}, // front right
96 {135, 0.3, 0.3, 0.8}, // rear left
97 {225, 0.3, 0.3, 0.8}, // rear right
105 // these systems sometimes have a subwoofer as well, but it has no
106 // channel of its own
109 {90, 0.5, 0.5, 1}, // side left
110 {270, 0.5, 0.5, 1}, // side right
122 {0, 0, 1, 1}, // center
135 // =======================================================================
136 // Internal sound data & structures
137 // =======================================================================
139 channel_t channels[MAX_CHANNELS];
140 unsigned int total_channels;
142 snd_ringbuffer_t *snd_renderbuffer = NULL;
143 static unsigned int soundtime = 0;
144 static unsigned int oldpaintedtime = 0;
145 static unsigned int extrasoundtime = 0;
146 static double snd_starttime = 0.0;
147 qboolean snd_threaded = false;
148 qboolean snd_usethreadedmixing = false;
150 vec3_t listener_origin;
151 matrix4x4_t listener_matrix[SND_LISTENERS];
152 mempool_t *snd_mempool;
154 // Linked list of known sfx
155 static sfx_t *known_sfx = NULL;
157 static qboolean sound_spatialized = false;
159 qboolean simsound = false;
161 static qboolean recording_sound = false;
164 static int current_swapstereo = false;
165 static int current_channellayout = SND_CHANNELLAYOUT_AUTO;
166 static int current_channellayout_used = SND_CHANNELLAYOUT_AUTO;
168 // Cvars declared in sound.h (part of the sound API)
169 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1", "volume of background music (such as CD music or replacement files such as sound/cdtracks/track002.ogg)"};
170 cvar_t volume = {CVAR_SAVE, "volume", "0.7", "volume of sound effects"};
171 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0", "indicates the sound subsystem is active"};
172 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1", "volume of ambient sound effects (such as swampy sounds at the start of e1m2)"};
173 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)"};
175 // Cvars declared in snd_main.h (shared with other snd_*.c files)
176 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1", "how much sound to mix ahead of time"};
177 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)"};
178 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0", "swaps left/right speakers for old ISA soundblaster cards"};
179 extern cvar_t v_flipped;
180 cvar_t snd_channellayout = {0, "snd_channellayout", "0", "channel layout. Can be 0 (auto - snd_restart needed), 1 (standard layout), or 2 (ALSA layout)"};
181 cvar_t snd_mutewhenidle = {CVAR_SAVE, "snd_mutewhenidle", "1", "whether to disable sound output when game window is inactive"};
184 static cvar_t nosound = {0, "nosound", "0", "disables sound"};
185 static cvar_t snd_precache = {0, "snd_precache", "1", "loads sounds before they are used"};
186 static cvar_t ambient_level = {0, "ambient_level", "0.3", "volume of environment noises (water and wind)"};
187 static cvar_t ambient_fade = {0, "ambient_fade", "100", "rate of volume fading when moving from one environment to another"};
188 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"};
189 static cvar_t snd_show = {0, "snd_show", "0", "shows some statistics about sound mixing"};
191 // Default sound format is 48KHz, 16-bit, stereo
192 // (48KHz because a lot of onboard sound cards sucks at any other speed)
193 static cvar_t snd_speed = {CVAR_SAVE, "snd_speed", "48000", "sound output frequency, in hertz"};
194 static cvar_t snd_width = {CVAR_SAVE, "snd_width", "2", "sound output precision, in bytes (1 and 2 supported)"};
195 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)"};
198 static sfx_t* ambient_sfxs [2] = { NULL, NULL };
199 static const char* ambient_names [2] = { "sound/ambience/water1.wav", "sound/ambience/wind2.wav" };
202 // ====================================================================
204 // ====================================================================
206 void S_FreeSfx (sfx_t *sfx, qboolean force);
208 static void S_Play_Common (float fvol, float attenuation)
211 char name [MAX_QPATH];
215 while (i < Cmd_Argc ())
217 // Get the name, and appends ".wav" as an extension if there's none
218 strlcpy (name, Cmd_Argv (i), sizeof (name));
219 if (!strrchr (name, '.'))
220 strlcat (name, ".wav", sizeof (name));
223 // If we need to get the volume from the command line
226 fvol = atof (Cmd_Argv (i));
230 sfx = S_PrecacheSound (name, true, false);
233 ch_ind = S_StartSound (-1, 0, sfx, listener_origin, fvol, attenuation);
235 // Free the sfx if the file didn't exist
237 S_FreeSfx (sfx, false);
239 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
244 static void S_Play_f(void)
246 S_Play_Common (1.0f, 1.0f);
249 static void S_Play2_f(void)
251 S_Play_Common (1.0f, 0.0f);
254 static void S_PlayVol_f(void)
256 S_Play_Common (-1.0f, 0.0f);
259 static void S_SoundList_f (void)
266 for (sfx = known_sfx, i = 0; sfx != NULL; sfx = sfx->next, i++)
268 if (sfx->fetcher != NULL)
271 const snd_format_t* format;
274 format = sfx->fetcher->getfmt(sfx);
275 Con_Printf ("%c%c%c%c(%2db, %6s) %8i : %s\n",
276 (sfx->loopstart < sfx->total_length) ? 'L' : ' ',
277 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
278 (sfx->locks > 0) ? 'K' : ' ',
279 (sfx->flags & SFXFLAG_PERMANENTLOCK) ? 'P' : ' ',
281 (format->channels == 1) ? "mono" : "stereo",
287 Con_Printf (" ( unknown ) unloaded : %s\n", sfx->name);
289 Con_Printf("Total resident: %i\n", total);
293 void S_SoundInfo_f(void)
295 if (snd_renderbuffer == NULL)
297 Con_Print("sound system not started\n");
301 Con_Printf("%5d speakers\n", snd_renderbuffer->format.channels);
302 Con_Printf("%5d frames\n", snd_renderbuffer->maxframes);
303 Con_Printf("%5d samplebits\n", snd_renderbuffer->format.width * 8);
304 Con_Printf("%5d speed\n", snd_renderbuffer->format.speed);
305 Con_Printf("%5u total_channels\n", total_channels);
309 int S_GetSoundRate(void)
311 return snd_renderbuffer ? snd_renderbuffer->format.speed : 0;
315 static qboolean S_ChooseCheaperFormat (snd_format_t* format, qboolean fixed_speed, qboolean fixed_width, qboolean fixed_channels)
317 static const snd_format_t thresholds [] =
319 // speed width channels
320 { SND_MIN_SPEED, SND_MIN_WIDTH, SND_MIN_CHANNELS },
326 { SND_MAX_SPEED, SND_MAX_WIDTH, SND_MAX_CHANNELS },
328 const unsigned int nb_thresholds = sizeof(thresholds) / sizeof(thresholds[0]);
329 unsigned int speed_level, width_level, channels_level;
331 // If we have reached the minimum values, there's nothing more we can do
332 if ((format->speed == thresholds[0].speed || fixed_speed) &&
333 (format->width == thresholds[0].width || fixed_width) &&
334 (format->channels == thresholds[0].channels || fixed_channels))
337 // Check the min and max values
338 #define CHECK_BOUNDARIES(param) \
339 if (format->param < thresholds[0].param) \
341 format->param = thresholds[0].param; \
344 if (format->param > thresholds[nb_thresholds - 1].param) \
346 format->param = thresholds[nb_thresholds - 1].param; \
349 CHECK_BOUNDARIES(speed);
350 CHECK_BOUNDARIES(width);
351 CHECK_BOUNDARIES(channels);
352 #undef CHECK_BOUNDARIES
354 // Find the level of each parameter
355 #define FIND_LEVEL(param) \
357 while (param##_level < nb_thresholds - 1) \
359 if (format->param <= thresholds[param##_level].param) \
366 FIND_LEVEL(channels);
369 // Decrease the parameter with the highest level to the previous level
370 if (channels_level >= speed_level && channels_level >= width_level && !fixed_channels)
372 format->channels = thresholds[channels_level - 1].channels;
375 if (speed_level >= width_level && !fixed_speed)
377 format->speed = thresholds[speed_level - 1].speed;
381 format->width = thresholds[width_level - 1].width;
386 #define SWAP_LISTENERS(l1, l2, tmpl) { tmpl = (l1); (l1) = (l2); (l2) = tmpl; }
388 static void S_SetChannelLayout (void)
391 listener_t swaplistener;
392 listener_t *listeners;
395 for (i = 0; i < SND_SPEAKERLAYOUTS; i++)
396 if (snd_speakerlayouts[i].channels == snd_renderbuffer->format.channels)
398 if (i >= SND_SPEAKERLAYOUTS)
400 Con_Printf("S_SetChannelLayout: can't find the speaker layout for %hu channels. Defaulting to mono output\n",
401 snd_renderbuffer->format.channels);
402 i = SND_SPEAKERLAYOUTS - 1;
405 snd_speakerlayout = snd_speakerlayouts[i];
406 listeners = snd_speakerlayout.listeners;
408 // Swap the left and right channels if snd_swapstereo is set
409 if (boolxor(snd_swapstereo.integer, v_flipped.integer))
411 switch (snd_speakerlayout.channels)
414 SWAP_LISTENERS(listeners[6], listeners[7], swaplistener);
418 SWAP_LISTENERS(listeners[2], listeners[3], swaplistener);
421 SWAP_LISTENERS(listeners[0], listeners[1], swaplistener);
432 if (snd_channellayout.integer < SND_CHANNELLAYOUT_AUTO ||
433 snd_channellayout.integer > SND_CHANNELLAYOUT_ALSA)
434 Cvar_SetValueQuick (&snd_channellayout, SND_CHANNELLAYOUT_STANDARD);
436 if (snd_channellayout.integer == SND_CHANNELLAYOUT_AUTO)
438 // If we're in the sound engine initialization
439 if (current_channellayout_used == SND_CHANNELLAYOUT_AUTO)
441 layout = SND_CHANNELLAYOUT_STANDARD;
442 Cvar_SetValueQuick (&snd_channellayout, layout);
445 layout = current_channellayout_used;
448 layout = snd_channellayout.integer;
450 // Convert our layout (= ALSA) to the standard layout if necessary
451 if (snd_speakerlayout.channels == 6 || snd_speakerlayout.channels == 8)
453 if (layout == SND_CHANNELLAYOUT_STANDARD)
455 SWAP_LISTENERS(listeners[2], listeners[4], swaplistener);
456 SWAP_LISTENERS(listeners[3], listeners[5], swaplistener);
459 Con_Printf("S_SetChannelLayout: using %s speaker layout for 3D sound\n",
460 (layout == SND_CHANNELLAYOUT_ALSA) ? "ALSA" : "standard");
463 current_swapstereo = boolxor(snd_swapstereo.integer, v_flipped.integer);
464 current_channellayout = snd_channellayout.integer;
465 current_channellayout_used = layout;
469 void S_Startup (void)
471 qboolean fixed_speed, fixed_width, fixed_channels;
472 snd_format_t chosen_fmt;
473 static snd_format_t prev_render_format = {0, 0, 0};
480 if (!snd_initialized.integer)
485 fixed_channels = false;
487 // Get the starting sound format from the cvars
488 chosen_fmt.speed = snd_speed.integer;
489 chosen_fmt.width = snd_width.integer;
490 chosen_fmt.channels = snd_channels.integer;
492 // Check the environment variables to see if the player wants a particular sound format
494 _dupenv_s(&env, &envlen, "QUAKE_SOUND_CHANNELS");
496 env = getenv("QUAKE_SOUND_CHANNELS");
500 chosen_fmt.channels = atoi (env);
504 fixed_channels = true;
507 _dupenv_s(&env, &envlen, "QUAKE_SOUND_SPEED");
509 env = getenv("QUAKE_SOUND_SPEED");
513 chosen_fmt.speed = atoi (env);
520 _dupenv_s(&env, &envlen, "QUAKE_SOUND_SAMPLEBITS");
522 env = getenv("QUAKE_SOUND_SAMPLEBITS");
526 chosen_fmt.width = atoi (env) / 8;
533 // Parse the command line to see if the player wants a particular sound format
534 // COMMANDLINEOPTION: Sound: -sndquad sets sound output to 4 channel surround
535 if (COM_CheckParm ("-sndquad") != 0)
537 chosen_fmt.channels = 4;
538 fixed_channels = true;
540 // COMMANDLINEOPTION: Sound: -sndstereo sets sound output to stereo
541 else if (COM_CheckParm ("-sndstereo") != 0)
543 chosen_fmt.channels = 2;
544 fixed_channels = true;
546 // COMMANDLINEOPTION: Sound: -sndmono sets sound output to mono
547 else if (COM_CheckParm ("-sndmono") != 0)
549 chosen_fmt.channels = 1;
550 fixed_channels = true;
552 // COMMANDLINEOPTION: Sound: -sndspeed <hz> chooses sound output rate (supported values are 48000, 44100, 32000, 24000, 22050, 16000, 11025 (quake), 8000)
553 i = COM_CheckParm ("-sndspeed");
554 if (0 < i && i < com_argc - 1)
556 chosen_fmt.speed = atoi (com_argv[i + 1]);
559 // COMMANDLINEOPTION: Sound: -sndbits <bits> chooses 8 bit or 16 bit sound output
560 i = COM_CheckParm ("-sndbits");
561 if (0 < i && i < com_argc - 1)
563 chosen_fmt.width = atoi (com_argv[i + 1]) / 8;
567 // You can't change sound speed after start time (not yet supported)
568 if (prev_render_format.speed != 0)
571 if (chosen_fmt.speed != prev_render_format.speed)
573 Con_Printf("S_Startup: sound speed has changed! This is NOT supported yet. Falling back to previous speed (%u Hz)\n",
574 prev_render_format.speed);
575 chosen_fmt.speed = prev_render_format.speed;
580 if (chosen_fmt.speed < SND_MIN_SPEED)
582 chosen_fmt.speed = SND_MIN_SPEED;
585 else if (chosen_fmt.speed > SND_MAX_SPEED)
587 chosen_fmt.speed = SND_MAX_SPEED;
591 if (chosen_fmt.width < SND_MIN_WIDTH)
593 chosen_fmt.width = SND_MIN_WIDTH;
596 else if (chosen_fmt.width > SND_MAX_WIDTH)
598 chosen_fmt.width = SND_MAX_WIDTH;
602 if (chosen_fmt.channels < SND_MIN_CHANNELS)
604 chosen_fmt.channels = SND_MIN_CHANNELS;
605 fixed_channels = false;
607 else if (chosen_fmt.channels > SND_MAX_CHANNELS)
609 chosen_fmt.channels = SND_MAX_CHANNELS;
610 fixed_channels = false;
613 // create the sound buffer used for sumitting the samples to the plaform-dependent module
616 snd_format_t suggest_fmt;
622 Con_Printf("S_Startup: initializing sound output format: %dHz, %d bit, %d channels...\n",
623 chosen_fmt.speed, chosen_fmt.width * 8,
624 chosen_fmt.channels);
626 memset(&suggest_fmt, 0, sizeof(suggest_fmt));
627 accepted = SndSys_Init(&chosen_fmt, &suggest_fmt);
631 Con_Printf("S_Startup: sound output initialization FAILED\n");
633 // If the module is suggesting another one
634 if (suggest_fmt.speed != 0)
636 memcpy(&chosen_fmt, &suggest_fmt, sizeof(chosen_fmt));
637 Con_Printf (" Driver has suggested %dHz, %d bit, %d channels. Retrying...\n",
638 suggest_fmt.speed, suggest_fmt.width * 8,
639 suggest_fmt.channels);
641 // Else, try to find a less resource-demanding format
642 else if (!S_ChooseCheaperFormat (&chosen_fmt, fixed_speed, fixed_width, fixed_channels))
647 // If we haven't found a suitable format
650 Con_Print("S_Startup: SndSys_Init failed.\n");
651 sound_spatialized = false;
657 snd_renderbuffer = Snd_CreateRingBuffer(&chosen_fmt, 0, NULL);
658 Con_Print ("S_Startup: simulating sound output\n");
661 memcpy(&prev_render_format, &snd_renderbuffer->format, sizeof(prev_render_format));
662 Con_Printf("Sound format: %dHz, %d channels, %d bits per sample\n",
663 chosen_fmt.speed, chosen_fmt.channels, chosen_fmt.width * 8);
666 if (snd_speed.integer != (int)chosen_fmt.speed)
667 Cvar_SetValueQuick(&snd_speed, chosen_fmt.speed);
668 if (snd_width.integer != chosen_fmt.width)
669 Cvar_SetValueQuick(&snd_width, chosen_fmt.width);
670 if (snd_channels.integer != chosen_fmt.channels)
671 Cvar_SetValueQuick(&snd_channels, chosen_fmt.channels);
673 current_channellayout_used = SND_CHANNELLAYOUT_AUTO;
674 S_SetChannelLayout();
676 snd_starttime = realtime;
678 // If the sound module has already run, add an extra time to make sure
679 // the sound time doesn't decrease, to not confuse playing SFXs
680 if (oldpaintedtime != 0)
682 // The extra time must be a multiple of the render buffer size
683 // to avoid modifying the current position in the buffer,
684 // some modules write directly to a shared (DMA) buffer
685 extrasoundtime = oldpaintedtime + snd_renderbuffer->maxframes - 1;
686 extrasoundtime -= extrasoundtime % snd_renderbuffer->maxframes;
687 Con_Printf("S_Startup: extra sound time = %u\n", extrasoundtime);
689 soundtime = extrasoundtime;
693 snd_renderbuffer->startframe = soundtime;
694 snd_renderbuffer->endframe = soundtime;
695 recording_sound = false;
698 void S_Shutdown(void)
700 if (snd_renderbuffer == NULL)
703 oldpaintedtime = snd_renderbuffer->endframe;
707 Mem_Free(snd_renderbuffer->ring);
708 Mem_Free(snd_renderbuffer);
709 snd_renderbuffer = NULL;
714 sound_spatialized = false;
717 void S_Restart_f(void)
719 // NOTE: we can't free all sounds if we are running a map (this frees sfx_t that are still referenced by precaches)
720 // So, refuse to do this if we are connected.
721 if(cls.state == ca_connected)
723 Con_Printf("snd_restart would wreak havoc if you do that while connected!\n");
738 Cvar_RegisterVariable(&volume);
739 Cvar_RegisterVariable(&bgmvolume);
740 Cvar_RegisterVariable(&snd_staticvolume);
742 Cvar_RegisterVariable(&snd_speed);
743 Cvar_RegisterVariable(&snd_width);
744 Cvar_RegisterVariable(&snd_channels);
745 Cvar_RegisterVariable(&snd_mutewhenidle);
747 // COMMANDLINEOPTION: Sound: -nosound disables sound (including CD audio)
748 if (COM_CheckParm("-nosound"))
750 // dummy out Play and Play2 because mods stuffcmd that
751 Cmd_AddCommand("play", Host_NoOperation_f, "does nothing because -nosound was specified");
752 Cmd_AddCommand("play2", Host_NoOperation_f, "does nothing because -nosound was specified");
756 snd_mempool = Mem_AllocPool("sound", 0, NULL);
758 // COMMANDLINEOPTION: Sound: -simsound runs sound mixing but with no output
759 if (COM_CheckParm("-simsound"))
762 Cmd_AddCommand("play", S_Play_f, "play a sound at your current location (not heard by anyone else)");
763 Cmd_AddCommand("play2", S_Play2_f, "play a sound globally throughout the level (not heard by anyone else)");
764 Cmd_AddCommand("playvol", S_PlayVol_f, "play a sound at the specified volume level at your current location (not heard by anyone else)");
765 Cmd_AddCommand("stopsound", S_StopAllSounds, "silence");
766 Cmd_AddCommand("soundlist", S_SoundList_f, "list loaded sounds");
767 Cmd_AddCommand("soundinfo", S_SoundInfo_f, "print sound system information (such as channels and speed)");
768 Cmd_AddCommand("snd_restart", S_Restart_f, "restart sound system");
769 Cmd_AddCommand("snd_unloadallsounds", S_UnloadAllSounds_f, "unload all sound files");
771 Cvar_RegisterVariable(&nosound);
772 Cvar_RegisterVariable(&snd_precache);
773 Cvar_RegisterVariable(&snd_initialized);
774 Cvar_RegisterVariable(&snd_streaming);
775 Cvar_RegisterVariable(&ambient_level);
776 Cvar_RegisterVariable(&ambient_fade);
777 Cvar_RegisterVariable(&snd_noextraupdate);
778 Cvar_RegisterVariable(&snd_show);
779 Cvar_RegisterVariable(&_snd_mixahead);
780 Cvar_RegisterVariable(&snd_swapstereo); // for people with backwards sound wiring
781 Cvar_RegisterVariable(&snd_channellayout);
782 Cvar_RegisterVariable(&snd_soundradius);
784 Cvar_SetValueQuick(&snd_initialized, true);
788 total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
789 memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
792 ModPlug_OpenLibrary ();
800 Shutdown and free all resources
803 void S_Terminate (void)
806 ModPlug_CloseLibrary ();
810 while (known_sfx != NULL)
811 S_FreeSfx (known_sfx, true);
813 Cvar_SetValueQuick (&snd_initialized, false);
814 Mem_FreePool (&snd_mempool);
823 void S_UnloadAllSounds_f (void)
827 // NOTE: we can't free all sounds if we are running a map (this frees sfx_t that are still referenced by precaches)
828 // So, refuse to do this if we are connected.
829 if(cls.state == ca_connected)
831 Con_Printf("snd_unloadallsounds would wreak havoc if you do that while connected!\n");
835 // stop any active sounds
838 // because the ambient sounds will be freed, clear the pointers
839 for (i = 0;i < (int)sizeof (ambient_sfxs) / (int)sizeof (ambient_sfxs[0]);i++)
840 ambient_sfxs[i] = NULL;
842 // now free all sounds
843 while (known_sfx != NULL)
844 S_FreeSfx (known_sfx, true);
853 sfx_t *S_FindName (const char *name)
857 if (!snd_initialized.integer)
860 if (strlen (name) >= sizeof (sfx->name))
862 Con_Printf ("S_FindName: sound name too long (%s)\n", name);
866 // Look for this sound in the list of known sfx
867 // TODO: hash table search?
868 for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
869 if(!strcmp (sfx->name, name))
872 // Add a sfx_t struct for this sound
873 sfx = (sfx_t *)Mem_Alloc (snd_mempool, sizeof (*sfx));
874 memset (sfx, 0, sizeof(*sfx));
875 strlcpy (sfx->name, name, sizeof (sfx->name));
876 sfx->memsize = sizeof(*sfx);
877 sfx->next = known_sfx;
889 void S_FreeSfx (sfx_t *sfx, qboolean force)
893 // Never free a locked sfx unless forced
894 if (!force && (sfx->locks > 0 || (sfx->flags & SFXFLAG_PERMANENTLOCK)))
897 if (developer_loading.integer)
898 Con_Printf ("unloading sound %s\n", sfx->name);
900 // Remove it from the list of known sfx
901 if (sfx == known_sfx)
902 known_sfx = known_sfx->next;
907 for (prev_sfx = known_sfx; prev_sfx != NULL; prev_sfx = prev_sfx->next)
908 if (prev_sfx->next == sfx)
910 prev_sfx->next = sfx->next;
913 if (prev_sfx == NULL)
915 Con_Printf ("S_FreeSfx: Can't find SFX %s in the list!\n", sfx->name);
920 // Stop all channels using this sfx
921 for (i = 0; i < total_channels; i++)
922 if (channels[i].sfx == sfx)
923 S_StopChannel (i, true);
926 if (sfx->fetcher != NULL && sfx->fetcher->free != NULL)
927 sfx->fetcher->free (sfx->fetcher_data);
937 void S_ServerSounds (char serversound [][MAX_QPATH], unsigned int numsounds)
943 // Start the ambient sounds and make them loop
944 for (i = 0; i < sizeof (ambient_sfxs) / sizeof (ambient_sfxs[0]); i++)
946 // Precache it if it's not done (request a lock to make sure it will never be freed)
947 if (ambient_sfxs[i] == NULL)
948 ambient_sfxs[i] = S_PrecacheSound (ambient_names[i], false, true);
949 if (ambient_sfxs[i] != NULL)
951 // Add a lock to the SFX while playing. It will be
952 // removed by S_StopAllSounds at the end of the level
953 S_LockSfx (ambient_sfxs[i]);
955 channels[i].sfx = ambient_sfxs[i];
956 channels[i].flags |= CHANNELFLAG_FORCELOOP;
957 channels[i].master_vol = 0;
961 // Remove 1 lock from all sfx with the SFXFLAG_SERVERSOUND flag, and remove the flag
962 for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
963 if (sfx->flags & SFXFLAG_SERVERSOUND)
966 sfx->flags &= ~SFXFLAG_SERVERSOUND;
969 // Add 1 lock and the SFXFLAG_SERVERSOUND flag to each sfx in "serversound"
970 for (i = 1; i < numsounds; i++)
972 sfx = S_FindName (serversound[i]);
975 // clear the FILEMISSING flag so that S_LoadSound will try again on a
976 // previously missing file
977 sfx->flags &= ~ SFXFLAG_FILEMISSING;
979 sfx->flags |= SFXFLAG_SERVERSOUND;
983 // Free all unlocked sfx
984 for (sfx = known_sfx;sfx;sfx = sfxnext)
987 S_FreeSfx (sfx, false);
997 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean lock)
1001 if (!snd_initialized.integer)
1004 if (name == NULL || name[0] == 0)
1007 sfx = S_FindName (name);
1012 // clear the FILEMISSING flag so that S_LoadSound will try again on a
1013 // previously missing file
1014 sfx->flags &= ~ SFXFLAG_FILEMISSING;
1019 if (!nosound.integer && snd_precache.integer)
1020 S_LoadSound(sfx, complain);
1030 qboolean S_IsSoundPrecached (const sfx_t *sfx)
1032 return (sfx != NULL && sfx->fetcher != NULL);
1042 void S_LockSfx (sfx_t *sfx)
1051 Remove a lock from a SFX
1054 void S_UnlockSfx (sfx_t *sfx)
1065 void S_BlockSound (void)
1076 void S_UnblockSound (void)
1086 Picks a channel based on priorities, empty slots, number of channels
1089 channel_t *SND_PickChannel(int entnum, int entchannel)
1093 int first_life_left, life_left;
1096 // Check for replacement sound, or find the best one to replace
1098 first_life_left = 0x7fffffff;
1100 // entity channels try to replace the existing sound on the channel
1101 if (entchannel != 0)
1103 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
1105 ch = &channels[ch_idx];
1106 if (ch->entnum == entnum && (ch->entchannel == entchannel || entchannel == -1) )
1108 // always override sound from same entity
1109 S_StopChannel (ch_idx, true);
1110 return &channels[ch_idx];
1115 // there was no channel to override, so look for the first empty one
1116 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
1118 ch = &channels[ch_idx];
1121 // no sound on this channel
1122 first_to_die = ch_idx;
1126 // don't let monster sounds override player sounds
1127 if (ch->entnum == cl.viewentity && entnum != cl.viewentity)
1130 // don't override looped sounds
1131 if ((ch->flags & CHANNELFLAG_FORCELOOP) || ch->sfx->loopstart < ch->sfx->total_length)
1133 life_left = ch->sfx->total_length - ch->pos;
1135 if (life_left < first_life_left)
1137 first_life_left = life_left;
1138 first_to_die = ch_idx;
1142 if (first_to_die == -1)
1145 return &channels[first_to_die];
1152 Spatializes a channel
1155 extern cvar_t cl_gameplayfix_soundsmovewithentities;
1156 void SND_Spatialize(channel_t *ch, qboolean isstatic)
1159 vec_t dist, mastervol, intensity, vol;
1162 // update sound origin if we know about the entity
1163 if (ch->entnum > 0 && cls.state == ca_connected && cl_gameplayfix_soundsmovewithentities.integer)
1165 if (ch->entnum >= 32768)
1167 // TODO: sounds that follow CSQC entities?
1169 else if (cl.entities[ch->entnum].state_current.active)
1171 //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]);
1172 VectorCopy(cl.entities[ch->entnum].state_current.origin, ch->origin);
1173 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)
1174 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);
1178 mastervol = ch->master_vol;
1179 // Adjust volume of static sounds
1181 mastervol *= snd_staticvolume.value;
1183 // anything coming from the view entity will always be full volume
1184 // LordHavoc: make sounds with ATTN_NONE have no spatialization
1185 if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
1187 for (i = 0;i < SND_LISTENERS;i++)
1189 vol = mastervol * snd_speakerlayout.listeners[i].ambientvolume;
1190 ch->listener_volume[i] = (int)bound(0, vol, 255);
1195 // calculate stereo seperation and distance attenuation
1196 VectorSubtract(listener_origin, ch->origin, source_vec);
1197 dist = VectorLength(source_vec);
1198 intensity = mastervol * (1.0 - dist * ch->dist_mult);
1201 for (i = 0;i < SND_LISTENERS;i++)
1203 Matrix4x4_Transform(&listener_matrix[i], ch->origin, source_vec);
1204 VectorNormalize(source_vec);
1205 vol = intensity * max(0, source_vec[0] * snd_speakerlayout.listeners[i].dotscale + snd_speakerlayout.listeners[i].dotbias);
1206 ch->listener_volume[i] = (int)bound(0, vol, 255);
1210 for (i = 0;i < SND_LISTENERS;i++)
1211 ch->listener_volume[i] = 0;
1216 // =======================================================================
1217 // Start a sound effect
1218 // =======================================================================
1220 void S_PlaySfxOnChannel (sfx_t *sfx, channel_t *target_chan, unsigned int flags, vec3_t origin, float fvol, float attenuation, qboolean isstatic)
1222 // Initialize the channel
1223 // We MUST set sfx LAST because otherwise we could crash a threaded mixer
1224 // (otherwise we'd have to call SndSys_LockRenderBuffer here)
1225 memset (target_chan, 0, sizeof (*target_chan));
1226 VectorCopy (origin, target_chan->origin);
1227 target_chan->flags = flags;
1228 target_chan->pos = 0; // start of the sound
1230 // If it's a static sound
1233 if (sfx->loopstart >= sfx->total_length)
1234 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
1235 target_chan->dist_mult = attenuation / (64.0f * snd_soundradius.value);
1238 target_chan->dist_mult = attenuation / snd_soundradius.value;
1240 // Lock the SFX during play
1243 // finally, set the sfx pointer, so the channel becomes valid for playback
1244 // and will be noticed by the mixer
1245 target_chan->sfx = sfx;
1247 // we have to set the channel volume AFTER the sfx because the function
1248 // needs it for replaygain support
1249 S_SetChannelVolume(target_chan - channels, fvol);
1253 int S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
1255 channel_t *target_chan, *check;
1258 if (snd_renderbuffer == NULL || sfx == NULL || nosound.integer)
1261 if (sfx->fetcher == NULL)
1264 // Pick a channel to play on
1265 target_chan = SND_PickChannel(entnum, entchannel);
1269 S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_NONE, origin, fvol, attenuation, false);
1270 target_chan->entnum = entnum;
1271 target_chan->entchannel = entchannel;
1273 SND_Spatialize(target_chan, false);
1275 // if an identical sound has also been started this frame, offset the pos
1276 // a bit to keep it from just making the first one louder
1277 check = &channels[NUM_AMBIENTS];
1278 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
1280 if (check == target_chan)
1282 if (check->sfx == sfx && !check->pos)
1284 // use negative pos offset to delay this sound effect
1285 target_chan->pos += (int)lhrandom(0, -0.1 * snd_renderbuffer->format.speed);
1290 return (target_chan - channels);
1293 void S_StopChannel (unsigned int channel_ind, qboolean lockmutex)
1297 if (channel_ind >= total_channels)
1300 ch = &channels[channel_ind];
1301 if (ch->sfx != NULL)
1303 sfx_t *sfx = ch->sfx;
1305 // we have to lock an audio mutex to prevent crashes if an audio mixer
1306 // thread is currently mixing this channel
1307 // the SndSys_LockRenderBuffer function uses such a mutex in
1308 // threaded sound backends
1310 SndSys_LockRenderBuffer();
1311 if (sfx->fetcher != NULL)
1313 snd_fetcher_endsb_t fetcher_endsb = sfx->fetcher->endsb;
1314 if (fetcher_endsb != NULL)
1315 fetcher_endsb (ch->fetcher_data);
1318 // Remove the lock it holds
1321 ch->fetcher_data = NULL;
1324 SndSys_UnlockRenderBuffer();
1329 qboolean S_SetChannelFlag (unsigned int ch_ind, unsigned int flag, qboolean value)
1331 if (ch_ind >= total_channels)
1334 if (flag != CHANNELFLAG_FORCELOOP &&
1335 flag != CHANNELFLAG_PAUSED &&
1336 flag != CHANNELFLAG_FULLVOLUME)
1340 channels[ch_ind].flags |= flag;
1342 channels[ch_ind].flags &= ~flag;
1347 void S_StopSound(int entnum, int entchannel)
1351 for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
1352 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
1354 S_StopChannel (i, true);
1359 extern void CDAudio_Stop(void);
1360 void S_StopAllSounds (void)
1364 // TOCHECK: is this test necessary?
1365 if (snd_renderbuffer == NULL)
1368 // stop CD audio because it may be using a faketrack
1371 for (i = 0; i < total_channels; i++)
1372 S_StopChannel (i, true);
1374 total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
1375 memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
1377 // Mute the contents of the submittion buffer
1378 if (simsound || SndSys_LockRenderBuffer ())
1383 clear = (snd_renderbuffer->format.width == 1) ? 0x80 : 0;
1384 memsize = snd_renderbuffer->maxframes * snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
1385 memset(snd_renderbuffer->ring, clear, memsize);
1388 SndSys_UnlockRenderBuffer ();
1392 void S_PauseGameSounds (qboolean toggle)
1396 for (i = 0; i < total_channels; i++)
1401 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
1402 S_SetChannelFlag (i, CHANNELFLAG_PAUSED, toggle);
1406 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
1408 sfx_t *sfx = channels[ch_ind].sfx;
1409 if(sfx->volume_peak > 0)
1411 // Replaygain support
1412 // Con_DPrintf("Setting volume on ReplayGain-enabled track... %f -> ", fvol);
1413 fvol *= sfx->volume_mult;
1414 if(fvol * sfx->volume_peak > 1)
1415 fvol = 1 / sfx->volume_peak;
1416 // Con_DPrintf("%f\n", fvol);
1418 channels[ch_ind].master_vol = (int)(fvol * 255.0f);
1427 void S_StaticSound (sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
1429 channel_t *target_chan;
1431 if (snd_renderbuffer == NULL || sfx == NULL || nosound.integer)
1435 Con_Printf ("S_StaticSound: \"%s\" hasn't been precached\n", sfx->name);
1439 if (total_channels == MAX_CHANNELS)
1441 Con_Print("S_StaticSound: total_channels == MAX_CHANNELS\n");
1445 target_chan = &channels[total_channels++];
1446 S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_FORCELOOP, origin, fvol, attenuation, true);
1448 SND_Spatialize (target_chan, true);
1454 S_UpdateAmbientSounds
1457 void S_UpdateAmbientSounds (void)
1461 int ambient_channel;
1463 unsigned char ambientlevels[NUM_AMBIENTS];
1465 memset(ambientlevels, 0, sizeof(ambientlevels));
1466 if (cl.worldmodel && cl.worldmodel->brush.AmbientSoundLevelsForPoint)
1467 cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_origin, ambientlevels, sizeof(ambientlevels));
1469 // Calc ambient sound levels
1470 for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
1472 chan = &channels[ambient_channel];
1473 if (chan->sfx == NULL || chan->sfx->fetcher == NULL)
1476 vol = (int)ambientlevels[ambient_channel];
1480 // Don't adjust volume too fast
1481 // FIXME: this rounds off to an int each frame, meaning there is little to no fade at extremely high framerates!
1482 if (cl.time > cl.oldtime)
1484 if (chan->master_vol < vol)
1486 chan->master_vol += (int)((cl.time - cl.oldtime) * ambient_fade.value);
1487 if (chan->master_vol > vol)
1488 chan->master_vol = vol;
1490 else if (chan->master_vol > vol)
1492 chan->master_vol -= (int)((cl.time - cl.oldtime) * ambient_fade.value);
1493 if (chan->master_vol < vol)
1494 chan->master_vol = vol;
1498 for (i = 0;i < SND_LISTENERS;i++)
1499 chan->listener_volume[i] = (int)(chan->master_vol * ambient_level.value * snd_speakerlayout.listeners[i].ambientvolume);
1503 static void S_PaintAndSubmit (void)
1505 unsigned int newsoundtime, paintedtime, endtime, maxtime, usedframes;
1506 int usesoundtimehack;
1507 static int soundtimehack = -1;
1508 static int oldsoundtime = 0;
1510 if (snd_renderbuffer == NULL || nosound.integer)
1513 // Update sound time
1514 snd_usethreadedmixing = false;
1515 usesoundtimehack = true;
1516 if (cls.timedemo) // SUPER NASTY HACK to mix non-realtime sound for more reliable benchmarking
1518 usesoundtimehack = 1;
1519 newsoundtime = (unsigned int)((double)cl.mtime[0] * (double)snd_renderbuffer->format.speed);
1521 else if (cls.capturevideo.soundrate && !cls.capturevideo.realtime) // SUPER NASTY HACK to record non-realtime sound
1523 usesoundtimehack = 2;
1524 newsoundtime = (unsigned int)((double)cls.capturevideo.frame * (double)snd_renderbuffer->format.speed / (double)cls.capturevideo.framerate);
1528 usesoundtimehack = 3;
1529 newsoundtime = (unsigned int)((realtime - snd_starttime) * (double)snd_renderbuffer->format.speed);
1533 snd_usethreadedmixing = snd_threaded && !cls.capturevideo.soundrate;
1534 usesoundtimehack = 0;
1535 newsoundtime = SndSys_GetSoundTime();
1537 // if the soundtimehack state changes we need to reset the soundtime
1538 if (soundtimehack != usesoundtimehack)
1540 snd_renderbuffer->startframe = snd_renderbuffer->endframe = soundtime = newsoundtime;
1542 // Mute the contents of the submission buffer
1543 if (simsound || SndSys_LockRenderBuffer ())
1548 clear = (snd_renderbuffer->format.width == 1) ? 0x80 : 0;
1549 memsize = snd_renderbuffer->maxframes * snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
1550 memset(snd_renderbuffer->ring, clear, memsize);
1553 SndSys_UnlockRenderBuffer ();
1556 soundtimehack = usesoundtimehack;
1558 if (!soundtimehack && snd_blocked > 0)
1561 if (snd_usethreadedmixing)
1562 return; // the audio thread will mix its own data
1564 newsoundtime += extrasoundtime;
1565 if (newsoundtime < soundtime)
1567 if ((cls.capturevideo.soundrate != 0) != recording_sound)
1569 unsigned int additionaltime;
1571 // add some time to extrasoundtime make newsoundtime higher
1573 // The extra time must be a multiple of the render buffer size
1574 // to avoid modifying the current position in the buffer,
1575 // some modules write directly to a shared (DMA) buffer
1576 additionaltime = (soundtime - newsoundtime) + snd_renderbuffer->maxframes - 1;
1577 additionaltime -= additionaltime % snd_renderbuffer->maxframes;
1579 extrasoundtime += additionaltime;
1580 newsoundtime += additionaltime;
1581 Con_DPrintf("S_PaintAndSubmit: new extra sound time = %u\n",
1584 else if (!soundtimehack)
1585 Con_Printf("S_PaintAndSubmit: WARNING: newsoundtime < soundtime (%u < %u)\n",
1586 newsoundtime, soundtime);
1588 soundtime = newsoundtime;
1589 recording_sound = (cls.capturevideo.soundrate != 0);
1591 // Lock submitbuffer
1592 if (!simsound && !SndSys_LockRenderBuffer())
1594 // If the lock failed, stop here
1595 Con_DPrint(">> S_PaintAndSubmit: SndSys_LockRenderBuffer() failed\n");
1599 // Check to make sure that we haven't overshot
1600 paintedtime = snd_renderbuffer->endframe;
1601 if (paintedtime < soundtime)
1602 paintedtime = soundtime;
1604 // mix ahead of current position
1606 endtime = soundtime + (unsigned int)(_snd_mixahead.value * (float)snd_renderbuffer->format.speed);
1608 endtime = soundtime + (unsigned int)(max(_snd_mixahead.value * (float)snd_renderbuffer->format.speed, min(3 * (soundtime - oldsoundtime), 0.3 * (float)snd_renderbuffer->format.speed)));
1609 usedframes = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
1610 maxtime = paintedtime + snd_renderbuffer->maxframes - usedframes;
1611 endtime = min(endtime, maxtime);
1613 while (paintedtime < endtime)
1615 unsigned int startoffset;
1616 unsigned int nbframes;
1618 // see how much we can fit in the paint buffer
1619 nbframes = endtime - paintedtime;
1620 // limit to the end of the ring buffer (in case of wrapping)
1621 startoffset = paintedtime % snd_renderbuffer->maxframes;
1622 nbframes = min(nbframes, snd_renderbuffer->maxframes - startoffset);
1624 // mix into the buffer
1625 S_MixToBuffer(&snd_renderbuffer->ring[startoffset * snd_renderbuffer->format.width * snd_renderbuffer->format.channels], nbframes);
1627 paintedtime += nbframes;
1628 snd_renderbuffer->endframe = paintedtime;
1631 SndSys_UnlockRenderBuffer();
1633 // Remove outdated samples from the ring buffer, if any
1634 if (snd_renderbuffer->startframe < soundtime)
1635 snd_renderbuffer->startframe = soundtime;
1638 snd_renderbuffer->startframe = snd_renderbuffer->endframe;
1642 oldsoundtime = soundtime;
1644 cls.soundstats.latency_milliseconds = (snd_renderbuffer->endframe - snd_renderbuffer->startframe) * 1000 / snd_renderbuffer->format.speed;
1651 Called once each time through the main loop
1654 void S_Update(const matrix4x4_t *listenermatrix)
1656 unsigned int i, j, k;
1657 channel_t *ch, *combine;
1658 matrix4x4_t basematrix, rotatematrix;
1660 if (snd_renderbuffer == NULL || nosound.integer)
1663 // If snd_swapstereo or snd_channellayout has changed, recompute the channel layout
1664 if (current_swapstereo != boolxor(snd_swapstereo.integer, v_flipped.integer) ||
1665 current_channellayout != snd_channellayout.integer)
1666 S_SetChannelLayout();
1668 Matrix4x4_Invert_Simple(&basematrix, listenermatrix);
1669 Matrix4x4_OriginFromMatrix(listenermatrix, listener_origin);
1671 // calculate the current matrices
1672 for (j = 0;j < SND_LISTENERS;j++)
1674 Matrix4x4_CreateFromQuakeEntity(&rotatematrix, 0, 0, 0, 0, -snd_speakerlayout.listeners[j].yawangle, 0, 1);
1675 Matrix4x4_Concat(&listener_matrix[j], &rotatematrix, &basematrix);
1676 // I think this should now do this:
1677 // 1. create a rotation matrix for rotating by e.g. -90 degrees CCW
1678 // (note: the matrix will rotate the OBJECT, not the VIEWER, so its
1679 // angle has to be taken negative)
1680 // 2. create a transform which first rotates and moves its argument
1681 // into the player's view coordinates (using basematrix which is
1682 // an inverted "absolute" listener matrix), then applies the
1683 // rotation matrix for the ear
1684 // Isn't Matrix4x4_CreateFromQuakeEntity a bit misleading because this
1685 // does not actually refer to an entity?
1688 // update general area ambient sound sources
1689 S_UpdateAmbientSounds ();
1693 // update spatialization for static and dynamic sounds
1694 cls.soundstats.totalsounds = 0;
1695 cls.soundstats.mixedsounds = 0;
1696 ch = channels+NUM_AMBIENTS;
1697 for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
1701 cls.soundstats.totalsounds++;
1703 // respatialize channel
1704 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);
1706 // try to combine static sounds with a previous channel of the same
1707 // sound effect so we don't mix five torches every frame
1708 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
1710 // no need to merge silent channels
1711 for (j = 0;j < SND_LISTENERS;j++)
1712 if (ch->listener_volume[j])
1714 if (j == SND_LISTENERS)
1716 // if the last combine chosen isn't suitable, find a new one
1717 if (!(combine && combine != ch && combine->sfx == ch->sfx))
1721 for (j = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;j < i;j++)
1723 if (channels[j].sfx == ch->sfx)
1725 combine = channels + j;
1730 if (combine && combine != ch && combine->sfx == ch->sfx)
1732 for (j = 0;j < SND_LISTENERS;j++)
1734 combine->listener_volume[j] += ch->listener_volume[j];
1735 ch->listener_volume[j] = 0;
1739 for (k = 0;k < SND_LISTENERS;k++)
1740 if (ch->listener_volume[k])
1742 if (k < SND_LISTENERS)
1743 cls.soundstats.mixedsounds++;
1746 sound_spatialized = true;
1749 if (snd_show.integer)
1750 Con_Printf("----(%u)----\n", cls.soundstats.mixedsounds);
1755 void S_ExtraUpdate (void)
1757 if (snd_noextraupdate.integer || !sound_spatialized)
1763 qboolean S_LocalSound (const char *sound)
1768 if (!snd_initialized.integer || nosound.integer)
1771 sfx = S_PrecacheSound (sound, true, false);
1774 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1778 // Local sounds must not be freed
1779 sfx->flags |= SFXFLAG_PERMANENTLOCK;
1781 ch_ind = S_StartSound (cl.viewentity, 0, sfx, vec3_origin, 1, 0);
1785 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;