/* Copyright (C) 1996-2001 Id Software, Inc. Copyright (C) 2002-2009 John Fitzgibbons and others Copyright (C) 2007-2008 Kristian Duske Copyright (C) 2010-2011 O. Sezer This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // snd_dma.c -- main control for any streaming sound output device #include "quakedef.h" #include "snd_codec.h" #include "bgmusic.h" static void S_Play (void); static void S_PlayVol (void); static void S_SoundList (void); static void S_Update_ (void); void S_StopAllSounds (qboolean clear); static void S_StopAllSoundsC (void); // ======================================================================= // Internal sound data & structures // ======================================================================= channel_t snd_channels[MAX_CHANNELS]; int total_channels; static int snd_blocked = 0; static qboolean snd_initialized = false; static dma_t sn; volatile dma_t *shm = NULL; vec3_t listener_origin; vec3_t listener_forward; vec3_t listener_right; vec3_t listener_up; #define sound_nominal_clip_dist 1000.0 int soundtime; // sample PAIRS int paintedtime; // sample PAIRS int s_rawend; portable_samplepair_t s_rawsamples[MAX_RAW_SAMPLES]; #define MAX_SFX 512 static sfx_t *known_sfx = NULL; // hunk allocated [MAX_SFX] static int num_sfx; static sfx_t *ambient_sfx[NUM_AMBIENTS]; static qboolean sound_started = false; cvar_t bgmvolume = {"bgmvolume", "1", CVAR_ARCHIVE}; cvar_t sfxvolume = {"volume", "0.7", CVAR_ARCHIVE}; cvar_t precache = {"precache", "1", CVAR_NONE}; cvar_t loadas8bit = {"loadas8bit", "0", CVAR_NONE}; cvar_t sndspeed = {"sndspeed", "11025", CVAR_NONE}; static cvar_t nosound = {"nosound", "0", CVAR_NONE}; static cvar_t ambient_level = {"ambient_level", "0.3", CVAR_NONE}; static cvar_t ambient_fade = {"ambient_fade", "100", CVAR_NONE}; static cvar_t snd_noextraupdate = {"snd_noextraupdate", "0", CVAR_NONE}; static cvar_t snd_show = {"snd_show", "0", CVAR_NONE}; static cvar_t _snd_mixahead = {"_snd_mixahead", "0.1", CVAR_ARCHIVE}; static void S_SoundInfo_f (void) { if (!sound_started || !shm) { Con_Printf ("sound system not started\n"); return; } Con_Printf("%d bit, %s, %d Hz\n", shm->samplebits, (shm->channels == 2) ? "stereo" : "mono", shm->speed); Con_Printf("%5d samples\n", shm->samples); Con_Printf("%5d samplepos\n", shm->samplepos); Con_Printf("%5d submission_chunk\n", shm->submission_chunk); Con_Printf("%5d total_channels\n", total_channels); Con_Printf("%p dma buffer\n", shm->buffer); } static void SND_Callback_sfxvolume (cvar_t *var) { SND_InitScaletable (); } /* ================ S_Startup ================ */ void S_Startup (void) { if (!snd_initialized) return; sound_started = SNDDMA_Init(&sn); if (!sound_started) { Con_Printf("Failed initializing sound\n"); } else { Con_Printf("Audio: %d bit, %s, %d Hz\n", shm->samplebits, (shm->channels == 2) ? "stereo" : "mono", shm->speed); } } /* ================ S_Init ================ */ void S_Init (void) { int i; if (snd_initialized) { Con_Printf("Sound is already initialized\n"); return; } Cvar_RegisterVariable(&nosound); Cvar_RegisterVariable(&sfxvolume); Cvar_RegisterVariable(&precache); Cvar_RegisterVariable(&loadas8bit); Cvar_RegisterVariable(&bgmvolume); Cvar_RegisterVariable(&ambient_level); Cvar_RegisterVariable(&ambient_fade); Cvar_RegisterVariable(&snd_noextraupdate); Cvar_RegisterVariable(&snd_show); Cvar_RegisterVariable(&_snd_mixahead); Cvar_RegisterVariable(&sndspeed); if (safemode || COM_CheckParm("-nosound")) return; Con_Printf("\nSound Initialization\n"); Cmd_AddCommand("play", S_Play); Cmd_AddCommand("playvol", S_PlayVol); Cmd_AddCommand("stopsound", S_StopAllSoundsC); Cmd_AddCommand("soundlist", S_SoundList); Cmd_AddCommand("soundinfo", S_SoundInfo_f); i = COM_CheckParm("-sndspeed"); if (i && i < com_argc-1) { Cvar_Set ("sndspeed", com_argv[i+1]); } if (host_parms->memsize < 0x800000) { Cvar_Set ("loadas8bit", "1"); Con_Printf ("loading all sounds as 8bit\n"); } Cvar_SetCallback(&sfxvolume, SND_Callback_sfxvolume); SND_InitScaletable (); known_sfx = (sfx_t *) Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t"); num_sfx = 0; snd_initialized = true; S_Startup (); if (sound_started == 0) return; // provides a tick sound until washed clean // if (shm->buffer) // shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav"); ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav"); S_CodecInit (); S_StopAllSounds (true); } // ======================================================================= // Shutdown sound engine // ======================================================================= void S_Shutdown (void) { if (!sound_started) return; sound_started = 0; snd_blocked = 0; S_CodecShutdown(); SNDDMA_Shutdown(); shm = NULL; } // ======================================================================= // Load a sound // ======================================================================= /* ================== S_FindName ================== */ static sfx_t *S_FindName (const char *name) { int i; sfx_t *sfx; if (!name) Sys_Error ("S_FindName: NULL"); if (Q_strlen(name) >= MAX_QPATH) Sys_Error ("Sound name too long: %s", name); // see if already loaded for (i = 0; i < num_sfx; i++) { if (!Q_strcmp(known_sfx[i].name, name)) { return &known_sfx[i]; } } if (num_sfx == MAX_SFX) Sys_Error ("S_FindName: out of sfx_t"); sfx = &known_sfx[i]; q_strlcpy (sfx->name, name, sizeof(sfx->name)); num_sfx++; return sfx; } /* ================== S_TouchSound ================== */ void S_TouchSound (const char *name) { sfx_t *sfx; if (!sound_started) return; sfx = S_FindName (name); Cache_Check (&sfx->cache); } /* ================== S_PrecacheSound ================== */ sfx_t *S_PrecacheSound (const char *name) { sfx_t *sfx; if (!sound_started || nosound.value) return NULL; sfx = S_FindName (name); // cache it in if (precache.value) S_LoadSound (sfx); return sfx; } //============================================================================= /* ================= SND_PickChannel picks a channel based on priorities, empty slots, number of channels ================= */ channel_t *SND_PickChannel (int entnum, int entchannel) { int ch_idx; int first_to_die; int life_left; // Check for replacement sound, or find the best one to replace first_to_die = -1; life_left = 0x7fffffff; for (ch_idx = NUM_AMBIENTS; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS; ch_idx++) { if (entchannel != 0 // channel 0 never overrides && snd_channels[ch_idx].entnum == entnum && (snd_channels[ch_idx].entchannel == entchannel || entchannel == -1) ) { // always override sound from same entity first_to_die = ch_idx; break; } // don't let monster sounds override player sounds if (snd_channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && snd_channels[ch_idx].sfx) continue; if (snd_channels[ch_idx].end - paintedtime < life_left) { life_left = snd_channels[ch_idx].end - paintedtime; first_to_die = ch_idx; } } if (first_to_die == -1) return NULL; if (snd_channels[first_to_die].sfx) snd_channels[first_to_die].sfx = NULL; return &snd_channels[first_to_die]; } /* ================= SND_Spatialize spatializes a channel ================= */ void SND_Spatialize (channel_t *ch) { vec_t dot; vec_t dist; vec_t lscale, rscale, scale; vec3_t source_vec; // anything coming from the view entity will always be full volume if (ch->entnum == cl.viewentity) { ch->leftvol = ch->master_vol; ch->rightvol = ch->master_vol; return; } // calculate stereo seperation and distance attenuation VectorSubtract(ch->origin, listener_origin, source_vec); dist = VectorNormalize(source_vec) * ch->dist_mult; dot = DotProduct(listener_right, source_vec); if (shm->channels == 1) { rscale = 1.0; lscale = 1.0; } else { rscale = 1.0 + dot; lscale = 1.0 - dot; } // add in distance effect scale = (1.0 - dist) * rscale; ch->rightvol = (int) (ch->master_vol * scale); if (ch->rightvol < 0) ch->rightvol = 0; scale = (1.0 - dist) * lscale; ch->leftvol = (int) (ch->master_vol * scale); if (ch->leftvol < 0) ch->leftvol = 0; } // ======================================================================= // Start a sound effect // ======================================================================= void S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation) { channel_t *target_chan, *check; sfxcache_t *sc; int ch_idx; int skip; if (!sound_started) return; if (!sfx) return; if (nosound.value) return; // pick a channel to play on target_chan = SND_PickChannel(entnum, entchannel); if (!target_chan) return; // spatialize memset (target_chan, 0, sizeof(*target_chan)); VectorCopy(origin, target_chan->origin); target_chan->dist_mult = attenuation / sound_nominal_clip_dist; target_chan->master_vol = (int) (fvol * 255); target_chan->entnum = entnum; target_chan->entchannel = entchannel; SND_Spatialize(target_chan); if (!target_chan->leftvol && !target_chan->rightvol) return; // not audible at all // new channel sc = S_LoadSound (sfx); if (!sc) { target_chan->sfx = NULL; return; // couldn't load the sound's data } target_chan->sfx = sfx; target_chan->pos = 0.0; target_chan->end = paintedtime + sc->length; // if an identical sound has also been started this frame, offset the pos // a bit to keep it from just making the first one louder check = &snd_channels[NUM_AMBIENTS]; for (ch_idx = NUM_AMBIENTS; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS; ch_idx++, check++) { if (check == target_chan) continue; if (check->sfx == sfx && !check->pos) { /* skip = rand () % (int)(0.1 * shm->speed); if (skip >= target_chan->end) skip = target_chan->end - 1; */ /* LordHavoc: fixed skip calculations */ skip = 0.1 * shm->speed; /* 0.1 * sc->speed */ if (skip > sc->length) skip = sc->length; if (skip > 0) skip = rand() % skip; target_chan->pos += skip; target_chan->end -= skip; break; } } } void S_StopSound (int entnum, int entchannel) { int i; for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++) { if (snd_channels[i].entnum == entnum && snd_channels[i].entchannel == entchannel) { snd_channels[i].end = 0; snd_channels[i].sfx = NULL; return; } } } void S_StopAllSounds (qboolean clear) { int i; if (!sound_started) return; total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics for (i = 0; i < MAX_CHANNELS; i++) { if (snd_channels[i].sfx) snd_channels[i].sfx = NULL; } memset(snd_channels, 0, MAX_CHANNELS * sizeof(channel_t)); if (clear) S_ClearBuffer (); } static void S_StopAllSoundsC (void) { S_StopAllSounds (true); } void S_ClearBuffer (void) { int clear; if (!sound_started || !shm) return; SNDDMA_LockBuffer (); if (! shm->buffer) return; s_rawend = 0; if (shm->samplebits == 8) clear = 0x80; else clear = 0; memset(shm->buffer, clear, shm->samples * shm->samplebits / 8); SNDDMA_Submit (); } /* ================= S_StaticSound ================= */ void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation) { channel_t *ss; sfxcache_t *sc; if (!sfx) return; if (total_channels == MAX_CHANNELS) { Con_Printf ("total_channels == MAX_CHANNELS\n"); return; } ss = &snd_channels[total_channels]; total_channels++; sc = S_LoadSound (sfx); if (!sc) return; if (sc->loopstart == -1) { Con_Printf ("Sound %s not looped\n", sfx->name); return; } ss->sfx = sfx; VectorCopy (origin, ss->origin); ss->master_vol = (int)vol; ss->dist_mult = (attenuation / 64) / sound_nominal_clip_dist; ss->end = paintedtime + sc->length; SND_Spatialize (ss); } //============================================================================= /* =================== S_UpdateAmbientSounds =================== */ static void S_UpdateAmbientSounds (void) { mleaf_t *l; int vol, ambient_channel; channel_t *chan; // no ambients when disconnected if (cls.state != ca_connected) return; // calc ambient sound levels if (!cl.worldmodel) return; l = Mod_PointInLeaf (listener_origin, cl.worldmodel); if (!l || !ambient_level.value) { for (ambient_channel = 0; ambient_channel < NUM_AMBIENTS; ambient_channel++) snd_channels[ambient_channel].sfx = NULL; return; } for (ambient_channel = 0; ambient_channel < NUM_AMBIENTS; ambient_channel++) { chan = &snd_channels[ambient_channel]; chan->sfx = ambient_sfx[ambient_channel]; vol = (int) (ambient_level.value * l->ambient_sound_level[ambient_channel]); if (vol < 8) vol = 0; // don't adjust volume too fast if (chan->master_vol < vol) { chan->master_vol += (int) (host_frametime * ambient_fade.value); if (chan->master_vol > vol) chan->master_vol = vol; } else if (chan->master_vol > vol) { chan->master_vol -= (int) (host_frametime * ambient_fade.value); if (chan->master_vol < vol) chan->master_vol = vol; } chan->leftvol = chan->rightvol = chan->master_vol; } } /* =================== S_RawSamples (from QuakeII) Streaming music support. Byte swapping of data must be handled by the codec. =================== */ void S_RawSamples (int samples, int rate, int width, int channels, byte *data, float volume) { int i; int src, dst; float scale; int intVolume; if (s_rawend < paintedtime) { s_rawend = paintedtime; } scale = (float) rate / shm->speed; intVolume = (int) (256 * volume); if (channels == 2 && width == 2) { for (i = 0; ; i++) { src = i * scale; if (src >= samples) { break; } dst = s_rawend & (MAX_RAW_SAMPLES - 1); s_rawend++; s_rawsamples [dst].left = ((short *) data)[src * 2] * intVolume; s_rawsamples [dst].right = ((short *) data)[src * 2 + 1] * intVolume; } } else if (channels == 1 && width == 2) { for (i = 0; ; i++) { src = i * scale; if (src >= samples) { break; } dst = s_rawend & (MAX_RAW_SAMPLES - 1); s_rawend++; s_rawsamples [dst].left = ((short *) data)[src] * intVolume; s_rawsamples [dst].right = ((short *) data)[src] * intVolume; } } else if (channels == 2 && width == 1) { intVolume *= 256; for (i = 0; ; i++) { src = i * scale; if (src >= samples) { break; } dst = s_rawend & (MAX_RAW_SAMPLES - 1); s_rawend++; // s_rawsamples [dst].left = ((char *) data)[src * 2] * intVolume; // s_rawsamples [dst].right = ((char *) data)[src * 2 + 1] * intVolume; /* the above doesn't work for me with U8, only the unsigned ones below do */ s_rawsamples [dst].left = (((byte *) data)[src * 2] - 128) * intVolume; s_rawsamples [dst].right = (((byte *) data)[src * 2 + 1] - 128) * intVolume; } } else if (channels == 1 && width == 1) { intVolume *= 256; for (i = 0; ; i++) { src = i * scale; if (src >= samples) { break; } dst = s_rawend & (MAX_RAW_SAMPLES - 1); s_rawend++; s_rawsamples [dst].left = (((byte *) data)[src] - 128) * intVolume; s_rawsamples [dst].right = (((byte *) data)[src] - 128) * intVolume; } } } /* ============ S_Update Called once each time through the main loop ============ */ void S_Update (vec3_t origin, vec3_t forward, vec3_t right, vec3_t up) { int i, j; int total; channel_t *ch; channel_t *combine; if (!sound_started || (snd_blocked > 0)) return; VectorCopy(origin, listener_origin); VectorCopy(forward, listener_forward); VectorCopy(right, listener_right); VectorCopy(up, listener_up); // update general area ambient sound sources S_UpdateAmbientSounds (); combine = NULL; // update spatialization for static and dynamic sounds ch = snd_channels + NUM_AMBIENTS; for (i = NUM_AMBIENTS; i < total_channels; i++, ch++) { if (!ch->sfx) continue; SND_Spatialize(ch); // respatialize channel if (!ch->leftvol && !ch->rightvol) continue; // try to combine static sounds with a previous channel of the same // sound effect so we don't mix five torches every frame if (i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS) { // see if it can just use the last one if (combine && combine->sfx == ch->sfx) { combine->leftvol += ch->leftvol; combine->rightvol += ch->rightvol; ch->leftvol = ch->rightvol = 0; continue; } // search for one combine = snd_channels + MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; for (j = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; j < i; j++, combine++) { if (combine->sfx == ch->sfx) break; } if (j == total_channels) { combine = NULL; } else { if (combine != ch) { combine->leftvol += ch->leftvol; combine->rightvol += ch->rightvol; ch->leftvol = ch->rightvol = 0; } continue; } } } // // debugging output // if (snd_show.value) { total = 0; ch = snd_channels; for (i = 0; i < total_channels; i++, ch++) { if (ch->sfx && (ch->leftvol || ch->rightvol) ) { // Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name); total++; } } Con_Printf ("----(%i)----\n", total); } // add raw data from streamed samples // BGM_Update(); // moved to the main loop just before S_Update () // mix some sound S_Update_(); } static void GetSoundtime (void) { int samplepos; static int buffers; static int oldsamplepos; int fullsamples; fullsamples = shm->samples / shm->channels; // it is possible to miscount buffers if it has wrapped twice between // calls to S_Update. Oh well. #ifdef __sun__ soundtime = SNDDMA_GetSamples(); #else samplepos = SNDDMA_GetDMAPos(); if (samplepos < oldsamplepos) { buffers++; // buffer wrapped if (paintedtime > 0x40000000) { // time to chop things off to avoid 32 bit limits buffers = 0; paintedtime = fullsamples; S_StopAllSounds (true); } } oldsamplepos = samplepos; soundtime = buffers*fullsamples + samplepos/shm->channels; #endif } void S_ExtraUpdate (void) { if (snd_noextraupdate.value) return; // don't pollute timings S_Update_(); } static void S_Update_ (void) { unsigned int endtime; int samps; if (!sound_started || (snd_blocked > 0)) return; SNDDMA_LockBuffer (); if (! shm->buffer) return; // Updates DMA time GetSoundtime(); // check to make sure that we haven't overshot if (paintedtime < soundtime) { // Con_Printf ("S_Update_ : overflow\n"); paintedtime = soundtime; } // mix ahead of current position endtime = soundtime + (unsigned int)(_snd_mixahead.value * shm->speed); samps = shm->samples >> (shm->channels - 1); endtime = q_min(endtime, (unsigned int)(soundtime + samps)); S_PaintChannels (endtime); SNDDMA_Submit (); } void S_BlockSound (void) { /* FIXME: do we really need the blocking at the * driver level? */ if (sound_started && snd_blocked == 0) /* ++snd_blocked == 1 */ { snd_blocked = 1; S_ClearBuffer (); if (shm) SNDDMA_BlockSound(); } } void S_UnblockSound (void) { if (!sound_started || !snd_blocked) return; if (snd_blocked == 1) /* --snd_blocked == 0 */ { snd_blocked = 0; SNDDMA_UnblockSound(); S_ClearBuffer (); } } /* =============================================================================== console functions =============================================================================== */ static void S_Play (void) { static int hash = 345; int i; char name[256]; sfx_t *sfx; i = 1; while (i < Cmd_Argc()) { q_strlcpy(name, Cmd_Argv(i), sizeof(name)); if (!Q_strrchr(Cmd_Argv(i), '.')) { q_strlcat(name, ".wav", sizeof(name)); } sfx = S_PrecacheSound(name); S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0); i++; } } static void S_PlayVol (void) { static int hash = 543; int i; float vol; char name[256]; sfx_t *sfx; i = 1; while (i < Cmd_Argc()) { q_strlcpy(name, Cmd_Argv(i), sizeof(name)); if (!Q_strrchr(Cmd_Argv(i), '.')) { q_strlcat(name, ".wav", sizeof(name)); } sfx = S_PrecacheSound(name); vol = Q_atof(Cmd_Argv(i + 1)); S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0); i += 2; } } static void S_SoundList (void) { int i; sfx_t *sfx; sfxcache_t *sc; int size, total; total = 0; for (sfx = known_sfx, i = 0; i < num_sfx; i++, sfx++) { sc = (sfxcache_t *) Cache_Check (&sfx->cache); if (!sc) continue; size = sc->length*sc->width*(sc->stereo + 1); total += size; if (sc->loopstart >= 0) Con_SafePrintf ("L"); //johnfitz -- was Con_Printf else Con_SafePrintf (" "); //johnfitz -- was Con_Printf Con_SafePrintf("(%2db) %6i : %s\n", sc->width*8, size, sfx->name); //johnfitz -- was Con_Printf } Con_Printf ("%i sounds, %i bytes\n", num_sfx, total); //johnfitz -- added count } void S_LocalSound (const char *name) { sfx_t *sfx; if (nosound.value) return; if (!sound_started) return; sfx = S_PrecacheSound (name); if (!sfx) { Con_Printf ("S_LocalSound: can't cache %s\n", name); return; } S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1); } void S_ClearPrecache (void) { } void S_BeginPrecaching (void) { } void S_EndPrecaching (void) { }