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https://github.com/UberGames/lilium-voyager.git
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1636 lines
36 KiB
C
1636 lines
36 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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/*****************************************************************************
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* name: snd_dma.c
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*
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* desc: main control for any streaming sound output device
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*
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* $Archive: /MissionPack/code/client/snd_dma.c $
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*
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*****************************************************************************/
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#include "snd_local.h"
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#include "client.h"
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void S_Play_f(void);
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void S_SoundList_f(void);
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void S_Music_f(void);
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void S_Update_();
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void S_StopAllSounds(void);
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void S_UpdateBackgroundTrack( void );
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static fileHandle_t s_backgroundFile;
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static wavinfo_t s_backgroundInfo;
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//int s_nextWavChunk;
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static int s_backgroundSamples;
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static char s_backgroundLoop[MAX_QPATH];
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//static char s_backgroundMusic[MAX_QPATH]; //TTimo: unused
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// =======================================================================
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// Internal sound data & structures
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// =======================================================================
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// only begin attenuating sound volumes when outside the FULLVOLUME range
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#define SOUND_FULLVOLUME 80
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#define SOUND_ATTENUATE 0.0008f
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channel_t s_channels[MAX_CHANNELS];
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channel_t loop_channels[MAX_CHANNELS];
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int numLoopChannels;
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static int s_soundStarted;
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static qboolean s_soundMuted;
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dma_t dma;
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static int listener_number;
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static vec3_t listener_origin;
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static vec3_t listener_axis[3];
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int s_soundtime; // sample PAIRS
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int s_paintedtime; // sample PAIRS
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// MAX_SFX may be larger than MAX_SOUNDS because
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// of custom player sounds
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#define MAX_SFX 4096
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sfx_t s_knownSfx[MAX_SFX];
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int s_numSfx = 0;
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#define LOOP_HASH 128
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static sfx_t *sfxHash[LOOP_HASH];
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cvar_t *s_volume;
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cvar_t *s_testsound;
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cvar_t *s_khz;
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cvar_t *s_show;
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cvar_t *s_mixahead;
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cvar_t *s_mixPreStep;
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cvar_t *s_musicVolume;
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cvar_t *s_separation;
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cvar_t *s_doppler;
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static loopSound_t loopSounds[MAX_GENTITIES];
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static channel_t *freelist = NULL;
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int s_rawend;
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portable_samplepair_t s_rawsamples[MAX_RAW_SAMPLES];
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// ====================================================================
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// User-setable variables
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// ====================================================================
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void S_SoundInfo_f(void) {
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Com_Printf("----- Sound Info -----\n" );
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if (!s_soundStarted) {
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Com_Printf ("sound system not started\n");
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} else {
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if ( s_soundMuted ) {
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Com_Printf ("sound system is muted\n");
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}
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Com_Printf("%5d stereo\n", dma.channels - 1);
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Com_Printf("%5d samples\n", dma.samples);
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Com_Printf("%5d samplebits\n", dma.samplebits);
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Com_Printf("%5d submission_chunk\n", dma.submission_chunk);
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Com_Printf("%5d speed\n", dma.speed);
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Com_Printf("0x%x dma buffer\n", dma.buffer);
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if ( s_backgroundFile ) {
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Com_Printf("Background file: %s\n", s_backgroundLoop );
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} else {
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Com_Printf("No background file.\n" );
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}
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}
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Com_Printf("----------------------\n" );
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}
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/*
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================
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S_Init
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================
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*/
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void S_Init( void ) {
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cvar_t *cv;
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qboolean r;
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Com_Printf("\n------- sound initialization -------\n");
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s_volume = Cvar_Get ("s_volume", "0.8", CVAR_ARCHIVE);
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s_musicVolume = Cvar_Get ("s_musicvolume", "0.25", CVAR_ARCHIVE);
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s_separation = Cvar_Get ("s_separation", "0.5", CVAR_ARCHIVE);
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s_doppler = Cvar_Get ("s_doppler", "1", CVAR_ARCHIVE);
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s_khz = Cvar_Get ("s_khz", "22", CVAR_ARCHIVE);
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s_mixahead = Cvar_Get ("s_mixahead", "0.2", CVAR_ARCHIVE);
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s_mixPreStep = Cvar_Get ("s_mixPreStep", "0.05", CVAR_ARCHIVE);
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s_show = Cvar_Get ("s_show", "0", CVAR_CHEAT);
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s_testsound = Cvar_Get ("s_testsound", "0", CVAR_CHEAT);
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cv = Cvar_Get ("s_initsound", "1", 0);
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if ( !cv->integer ) {
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Com_Printf ("not initializing.\n");
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Com_Printf("------------------------------------\n");
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return;
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}
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Cmd_AddCommand("play", S_Play_f);
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Cmd_AddCommand("music", S_Music_f);
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Cmd_AddCommand("s_list", S_SoundList_f);
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Cmd_AddCommand("s_info", S_SoundInfo_f);
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Cmd_AddCommand("s_stop", S_StopAllSounds);
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r = SNDDMA_Init();
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Com_Printf("------------------------------------\n");
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if ( r ) {
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s_soundStarted = 1;
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s_soundMuted = 1;
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// s_numSfx = 0;
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Com_Memset(sfxHash, 0, sizeof(sfx_t *)*LOOP_HASH);
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s_soundtime = 0;
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s_paintedtime = 0;
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S_StopAllSounds ();
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S_SoundInfo_f();
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}
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}
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void S_ChannelFree(channel_t *v) {
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v->thesfx = NULL;
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*(channel_t **)v = freelist;
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freelist = (channel_t*)v;
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}
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channel_t* S_ChannelMalloc() {
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channel_t *v;
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if (freelist == NULL) {
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return NULL;
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}
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v = freelist;
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freelist = *(channel_t **)freelist;
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v->allocTime = Com_Milliseconds();
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return v;
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}
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void S_ChannelSetup() {
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channel_t *p, *q;
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// clear all the sounds so they don't
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Com_Memset( s_channels, 0, sizeof( s_channels ) );
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p = s_channels;;
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q = p + MAX_CHANNELS;
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while (--q > p) {
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*(channel_t **)q = q-1;
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}
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*(channel_t **)q = NULL;
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freelist = p + MAX_CHANNELS - 1;
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Com_DPrintf("Channel memory manager started\n");
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}
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// =======================================================================
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// Shutdown sound engine
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// =======================================================================
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void S_Shutdown( void ) {
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if ( !s_soundStarted ) {
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return;
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}
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SNDDMA_Shutdown();
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s_soundStarted = 0;
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Cmd_RemoveCommand("play");
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Cmd_RemoveCommand("music");
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Cmd_RemoveCommand("stopsound");
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Cmd_RemoveCommand("soundlist");
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Cmd_RemoveCommand("soundinfo");
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}
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// =======================================================================
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// Load a sound
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// =======================================================================
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/*
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================
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return a hash value for the sfx name
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================
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*/
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static long S_HashSFXName(const char *name) {
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int i;
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long hash;
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char letter;
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hash = 0;
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i = 0;
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while (name[i] != '\0') {
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letter = tolower(name[i]);
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if (letter =='.') break; // don't include extension
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if (letter =='\\') letter = '/'; // damn path names
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hash+=(long)(letter)*(i+119);
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i++;
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}
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hash &= (LOOP_HASH-1);
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return hash;
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}
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/*
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==================
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S_FindName
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Will allocate a new sfx if it isn't found
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==================
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*/
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static sfx_t *S_FindName( const char *name ) {
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int i;
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int hash;
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sfx_t *sfx;
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if (!name) {
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Com_Error (ERR_FATAL, "S_FindName: NULL\n");
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}
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if (!name[0]) {
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Com_Error (ERR_FATAL, "S_FindName: empty name\n");
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}
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if (strlen(name) >= MAX_QPATH) {
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Com_Error (ERR_FATAL, "Sound name too long: %s", name);
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}
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hash = S_HashSFXName(name);
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sfx = sfxHash[hash];
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// see if already loaded
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while (sfx) {
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if (!Q_stricmp(sfx->soundName, name) ) {
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return sfx;
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}
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sfx = sfx->next;
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}
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// find a free sfx
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for (i=0 ; i < s_numSfx ; i++) {
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if (!s_knownSfx[i].soundName[0]) {
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break;
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}
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}
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if (i == s_numSfx) {
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if (s_numSfx == MAX_SFX) {
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Com_Error (ERR_FATAL, "S_FindName: out of sfx_t");
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}
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s_numSfx++;
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}
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sfx = &s_knownSfx[i];
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Com_Memset (sfx, 0, sizeof(*sfx));
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strcpy (sfx->soundName, name);
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sfx->next = sfxHash[hash];
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sfxHash[hash] = sfx;
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return sfx;
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}
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/*
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=================
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S_DefaultSound
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=================
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*/
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void S_DefaultSound( sfx_t *sfx ) {
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int i;
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sfx->soundLength = 512;
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sfx->soundData = SND_malloc();
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sfx->soundData->next = NULL;
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for ( i = 0 ; i < sfx->soundLength ; i++ ) {
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sfx->soundData->sndChunk[i] = i;
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}
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}
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/*
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===================
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S_DisableSounds
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Disables sounds until the next S_BeginRegistration.
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This is called when the hunk is cleared and the sounds
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are no longer valid.
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===================
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*/
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void S_DisableSounds( void ) {
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S_StopAllSounds();
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s_soundMuted = qtrue;
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}
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/*
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=====================
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S_BeginRegistration
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=====================
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*/
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void S_BeginRegistration( void ) {
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s_soundMuted = qfalse; // we can play again
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if (s_numSfx == 0) {
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SND_setup();
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s_numSfx = 0;
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Com_Memset( s_knownSfx, 0, sizeof( s_knownSfx ) );
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Com_Memset(sfxHash, 0, sizeof(sfx_t *)*LOOP_HASH);
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S_RegisterSound("sound/feedback/hit.wav", qfalse); // changed to a sound in baseq3
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}
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}
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/*
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==================
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S_RegisterSound
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Creates a default buzz sound if the file can't be loaded
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==================
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*/
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sfxHandle_t S_RegisterSound( const char *name, qboolean compressed ) {
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sfx_t *sfx;
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compressed = qfalse;
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if (!s_soundStarted) {
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return 0;
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}
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if ( strlen( name ) >= MAX_QPATH ) {
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Com_Printf( "Sound name exceeds MAX_QPATH\n" );
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return 0;
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}
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sfx = S_FindName( name );
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if ( sfx->soundData ) {
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if ( sfx->defaultSound ) {
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Com_Printf( S_COLOR_YELLOW "WARNING: could not find %s - using default\n", sfx->soundName );
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return 0;
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}
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return sfx - s_knownSfx;
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}
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sfx->inMemory = qfalse;
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sfx->soundCompressed = compressed;
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S_memoryLoad(sfx);
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if ( sfx->defaultSound ) {
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Com_Printf( S_COLOR_YELLOW "WARNING: could not find %s - using default\n", sfx->soundName );
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return 0;
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}
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return sfx - s_knownSfx;
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}
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void S_memoryLoad(sfx_t *sfx) {
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// load the sound file
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if ( !S_LoadSound ( sfx ) ) {
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// Com_Printf( S_COLOR_YELLOW "WARNING: couldn't load sound: %s\n", sfx->soundName );
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sfx->defaultSound = qtrue;
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}
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sfx->inMemory = qtrue;
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}
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//=============================================================================
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/*
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=================
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S_SpatializeOrigin
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Used for spatializing s_channels
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=================
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*/
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void S_SpatializeOrigin (vec3_t origin, int master_vol, int *left_vol, int *right_vol)
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{
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vec_t dot;
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vec_t dist;
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vec_t lscale, rscale, scale;
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vec3_t source_vec;
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vec3_t vec;
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const float dist_mult = SOUND_ATTENUATE;
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// calculate stereo seperation and distance attenuation
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VectorSubtract(origin, listener_origin, source_vec);
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dist = VectorNormalize(source_vec);
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dist -= SOUND_FULLVOLUME;
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if (dist < 0)
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dist = 0; // close enough to be at full volume
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dist *= dist_mult; // different attenuation levels
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VectorRotate( source_vec, listener_axis, vec );
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dot = -vec[1];
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if (dma.channels == 1)
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{ // no attenuation = no spatialization
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rscale = 1.0;
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lscale = 1.0;
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}
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else
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{
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rscale = 0.5 * (1.0 + dot);
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lscale = 0.5 * (1.0 - dot);
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//rscale = s_separation->value + ( 1.0 - s_separation->value ) * dot;
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//lscale = s_separation->value - ( 1.0 - s_separation->value ) * dot;
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if ( rscale < 0 ) {
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rscale = 0;
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}
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if ( lscale < 0 ) {
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lscale = 0;
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}
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}
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// add in distance effect
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scale = (1.0 - dist) * rscale;
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*right_vol = (master_vol * scale);
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if (*right_vol < 0)
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*right_vol = 0;
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scale = (1.0 - dist) * lscale;
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*left_vol = (master_vol * scale);
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if (*left_vol < 0)
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*left_vol = 0;
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}
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// =======================================================================
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// Start a sound effect
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// =======================================================================
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/*
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====================
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S_StartSound
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Validates the parms and ques the sound up
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if pos is NULL, the sound will be dynamically sourced from the entity
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Entchannel 0 will never override a playing sound
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====================
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*/
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void S_StartSound(vec3_t origin, int entityNum, int entchannel, sfxHandle_t sfxHandle ) {
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channel_t *ch;
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sfx_t *sfx;
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int i, oldest, chosen, time;
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int inplay, allowed;
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if ( !s_soundStarted || s_soundMuted ) {
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return;
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}
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if ( !origin && ( entityNum < 0 || entityNum > MAX_GENTITIES ) ) {
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Com_Error( ERR_DROP, "S_StartSound: bad entitynum %i", entityNum );
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}
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if ( sfxHandle < 0 || sfxHandle >= s_numSfx ) {
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Com_Printf( S_COLOR_YELLOW, "S_StartSound: handle %i out of range\n", sfxHandle );
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return;
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}
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sfx = &s_knownSfx[ sfxHandle ];
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if (sfx->inMemory == qfalse) {
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S_memoryLoad(sfx);
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}
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if ( s_show->integer == 1 ) {
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Com_Printf( "%i : %s\n", s_paintedtime, sfx->soundName );
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}
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time = Com_Milliseconds();
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// Com_Printf("playing %s\n", sfx->soundName);
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// pick a channel to play on
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allowed = 4;
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if (entityNum == listener_number) {
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allowed = 8;
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}
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ch = s_channels;
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inplay = 0;
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for ( i = 0; i < MAX_CHANNELS ; i++, ch++ ) {
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if (ch[i].entnum == entityNum && ch[i].thesfx == sfx) {
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if (time - ch[i].allocTime < 50) {
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// if (Cvar_VariableValue( "cg_showmiss" )) {
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// Com_Printf("double sound start\n");
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// }
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return;
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}
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inplay++;
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}
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}
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if (inplay>allowed) {
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return;
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}
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sfx->lastTimeUsed = time;
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|
|
ch = S_ChannelMalloc(); // entityNum, entchannel);
|
|
if (!ch) {
|
|
ch = s_channels;
|
|
|
|
oldest = sfx->lastTimeUsed;
|
|
chosen = -1;
|
|
for ( i = 0 ; i < MAX_CHANNELS ; i++, ch++ ) {
|
|
if (ch->entnum != listener_number && ch->entnum == entityNum && ch->allocTime<oldest && ch->entchannel != CHAN_ANNOUNCER) {
|
|
oldest = ch->allocTime;
|
|
chosen = i;
|
|
}
|
|
}
|
|
if (chosen == -1) {
|
|
ch = s_channels;
|
|
for ( i = 0 ; i < MAX_CHANNELS ; i++, ch++ ) {
|
|
if (ch->entnum != listener_number && ch->allocTime<oldest && ch->entchannel != CHAN_ANNOUNCER) {
|
|
oldest = ch->allocTime;
|
|
chosen = i;
|
|
}
|
|
}
|
|
if (chosen == -1) {
|
|
if (ch->entnum == listener_number) {
|
|
for ( i = 0 ; i < MAX_CHANNELS ; i++, ch++ ) {
|
|
if (ch->allocTime<oldest) {
|
|
oldest = ch->allocTime;
|
|
chosen = i;
|
|
}
|
|
}
|
|
}
|
|
if (chosen == -1) {
|
|
Com_Printf("dropping sound\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
ch = &s_channels[chosen];
|
|
ch->allocTime = sfx->lastTimeUsed;
|
|
}
|
|
|
|
if (origin) {
|
|
VectorCopy (origin, ch->origin);
|
|
ch->fixed_origin = qtrue;
|
|
} else {
|
|
ch->fixed_origin = qfalse;
|
|
}
|
|
|
|
ch->master_vol = 127;
|
|
ch->entnum = entityNum;
|
|
ch->thesfx = sfx;
|
|
ch->startSample = START_SAMPLE_IMMEDIATE;
|
|
ch->entchannel = entchannel;
|
|
ch->leftvol = ch->master_vol; // these will get calced at next spatialize
|
|
ch->rightvol = ch->master_vol; // unless the game isn't running
|
|
ch->doppler = qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
S_StartLocalSound
|
|
==================
|
|
*/
|
|
void S_StartLocalSound( sfxHandle_t sfxHandle, int channelNum ) {
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
if ( sfxHandle < 0 || sfxHandle >= s_numSfx ) {
|
|
Com_Printf( S_COLOR_YELLOW, "S_StartLocalSound: handle %i out of range\n", sfxHandle );
|
|
return;
|
|
}
|
|
|
|
S_StartSound (NULL, listener_number, channelNum, sfxHandle );
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
S_ClearSoundBuffer
|
|
|
|
If we are about to perform file access, clear the buffer
|
|
so sound doesn't stutter.
|
|
==================
|
|
*/
|
|
void S_ClearSoundBuffer( void ) {
|
|
int clear;
|
|
|
|
if (!s_soundStarted)
|
|
return;
|
|
|
|
// stop looping sounds
|
|
Com_Memset(loopSounds, 0, MAX_GENTITIES*sizeof(loopSound_t));
|
|
Com_Memset(loop_channels, 0, MAX_CHANNELS*sizeof(channel_t));
|
|
numLoopChannels = 0;
|
|
|
|
S_ChannelSetup();
|
|
|
|
s_rawend = 0;
|
|
|
|
if (dma.samplebits == 8)
|
|
clear = 0x80;
|
|
else
|
|
clear = 0;
|
|
|
|
SNDDMA_BeginPainting ();
|
|
if (dma.buffer)
|
|
// TTimo: due to a particular bug workaround in linux sound code,
|
|
// have to optionally use a custom C implementation of Com_Memset
|
|
// not affecting win32, we have #define Snd_Memset Com_Memset
|
|
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=371
|
|
Snd_Memset(dma.buffer, clear, dma.samples * dma.samplebits/8);
|
|
SNDDMA_Submit ();
|
|
}
|
|
|
|
/*
|
|
==================
|
|
S_StopAllSounds
|
|
==================
|
|
*/
|
|
void S_StopAllSounds(void) {
|
|
if ( !s_soundStarted ) {
|
|
return;
|
|
}
|
|
|
|
// stop the background music
|
|
S_StopBackgroundTrack();
|
|
|
|
S_ClearSoundBuffer ();
|
|
}
|
|
|
|
/*
|
|
==============================================================
|
|
|
|
continuous looping sounds are added each frame
|
|
|
|
==============================================================
|
|
*/
|
|
|
|
void S_StopLoopingSound(int entityNum) {
|
|
loopSounds[entityNum].active = qfalse;
|
|
// loopSounds[entityNum].sfx = 0;
|
|
loopSounds[entityNum].kill = qfalse;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
S_ClearLoopingSounds
|
|
|
|
==================
|
|
*/
|
|
void S_ClearLoopingSounds( qboolean killall ) {
|
|
int i;
|
|
for ( i = 0 ; i < MAX_GENTITIES ; i++) {
|
|
if (killall || loopSounds[i].kill == qtrue || (loopSounds[i].sfx && loopSounds[i].sfx->soundLength == 0)) {
|
|
loopSounds[i].kill = qfalse;
|
|
S_StopLoopingSound(i);
|
|
}
|
|
}
|
|
numLoopChannels = 0;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
S_AddLoopingSound
|
|
|
|
Called during entity generation for a frame
|
|
Include velocity in case I get around to doing doppler...
|
|
==================
|
|
*/
|
|
void S_AddLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfxHandle ) {
|
|
sfx_t *sfx;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
if ( sfxHandle < 0 || sfxHandle >= s_numSfx ) {
|
|
Com_Printf( S_COLOR_YELLOW, "S_AddLoopingSound: handle %i out of range\n", sfxHandle );
|
|
return;
|
|
}
|
|
|
|
sfx = &s_knownSfx[ sfxHandle ];
|
|
|
|
if (sfx->inMemory == qfalse) {
|
|
S_memoryLoad(sfx);
|
|
}
|
|
|
|
if ( !sfx->soundLength ) {
|
|
Com_Error( ERR_DROP, "%s has length 0", sfx->soundName );
|
|
}
|
|
|
|
VectorCopy( origin, loopSounds[entityNum].origin );
|
|
VectorCopy( velocity, loopSounds[entityNum].velocity );
|
|
loopSounds[entityNum].active = qtrue;
|
|
loopSounds[entityNum].kill = qtrue;
|
|
loopSounds[entityNum].doppler = qfalse;
|
|
loopSounds[entityNum].oldDopplerScale = 1.0;
|
|
loopSounds[entityNum].dopplerScale = 1.0;
|
|
loopSounds[entityNum].sfx = sfx;
|
|
|
|
if (s_doppler->integer && VectorLengthSquared(velocity)>0.0) {
|
|
vec3_t out;
|
|
float lena, lenb;
|
|
|
|
loopSounds[entityNum].doppler = qtrue;
|
|
lena = DistanceSquared(loopSounds[listener_number].origin, loopSounds[entityNum].origin);
|
|
VectorAdd(loopSounds[entityNum].origin, loopSounds[entityNum].velocity, out);
|
|
lenb = DistanceSquared(loopSounds[listener_number].origin, out);
|
|
if ((loopSounds[entityNum].framenum+1) != cls.framecount) {
|
|
loopSounds[entityNum].oldDopplerScale = 1.0;
|
|
} else {
|
|
loopSounds[entityNum].oldDopplerScale = loopSounds[entityNum].dopplerScale;
|
|
}
|
|
loopSounds[entityNum].dopplerScale = lenb/(lena*100);
|
|
if (loopSounds[entityNum].dopplerScale<=1.0) {
|
|
loopSounds[entityNum].doppler = qfalse; // don't bother doing the math
|
|
}
|
|
}
|
|
|
|
loopSounds[entityNum].framenum = cls.framecount;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
S_AddLoopingSound
|
|
|
|
Called during entity generation for a frame
|
|
Include velocity in case I get around to doing doppler...
|
|
==================
|
|
*/
|
|
void S_AddRealLoopingSound( int entityNum, const vec3_t origin, const vec3_t velocity, sfxHandle_t sfxHandle ) {
|
|
sfx_t *sfx;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
if ( sfxHandle < 0 || sfxHandle >= s_numSfx ) {
|
|
Com_Printf( S_COLOR_YELLOW, "S_AddRealLoopingSound: handle %i out of range\n", sfxHandle );
|
|
return;
|
|
}
|
|
|
|
sfx = &s_knownSfx[ sfxHandle ];
|
|
|
|
if (sfx->inMemory == qfalse) {
|
|
S_memoryLoad(sfx);
|
|
}
|
|
|
|
if ( !sfx->soundLength ) {
|
|
Com_Error( ERR_DROP, "%s has length 0", sfx->soundName );
|
|
}
|
|
VectorCopy( origin, loopSounds[entityNum].origin );
|
|
VectorCopy( velocity, loopSounds[entityNum].velocity );
|
|
loopSounds[entityNum].sfx = sfx;
|
|
loopSounds[entityNum].active = qtrue;
|
|
loopSounds[entityNum].kill = qfalse;
|
|
loopSounds[entityNum].doppler = qfalse;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
==================
|
|
S_AddLoopSounds
|
|
|
|
Spatialize all of the looping sounds.
|
|
All sounds are on the same cycle, so any duplicates can just
|
|
sum up the channel multipliers.
|
|
==================
|
|
*/
|
|
void S_AddLoopSounds (void) {
|
|
int i, j, time;
|
|
int left_total, right_total, left, right;
|
|
channel_t *ch;
|
|
loopSound_t *loop, *loop2;
|
|
static int loopFrame;
|
|
|
|
|
|
numLoopChannels = 0;
|
|
|
|
time = Com_Milliseconds();
|
|
|
|
loopFrame++;
|
|
for ( i = 0 ; i < MAX_GENTITIES ; i++) {
|
|
loop = &loopSounds[i];
|
|
if ( !loop->active || loop->mergeFrame == loopFrame ) {
|
|
continue; // already merged into an earlier sound
|
|
}
|
|
|
|
if (loop->kill) {
|
|
S_SpatializeOrigin( loop->origin, 127, &left_total, &right_total); // 3d
|
|
} else {
|
|
S_SpatializeOrigin( loop->origin, 90, &left_total, &right_total); // sphere
|
|
}
|
|
|
|
loop->sfx->lastTimeUsed = time;
|
|
|
|
for (j=(i+1); j< MAX_GENTITIES ; j++) {
|
|
loop2 = &loopSounds[j];
|
|
if ( !loop2->active || loop2->doppler || loop2->sfx != loop->sfx) {
|
|
continue;
|
|
}
|
|
loop2->mergeFrame = loopFrame;
|
|
|
|
if (loop2->kill) {
|
|
S_SpatializeOrigin( loop2->origin, 127, &left, &right); // 3d
|
|
} else {
|
|
S_SpatializeOrigin( loop2->origin, 90, &left, &right); // sphere
|
|
}
|
|
|
|
loop2->sfx->lastTimeUsed = time;
|
|
left_total += left;
|
|
right_total += right;
|
|
}
|
|
if (left_total == 0 && right_total == 0) {
|
|
continue; // not audible
|
|
}
|
|
|
|
// allocate a channel
|
|
ch = &loop_channels[numLoopChannels];
|
|
|
|
if (left_total > 255) {
|
|
left_total = 255;
|
|
}
|
|
if (right_total > 255) {
|
|
right_total = 255;
|
|
}
|
|
|
|
ch->master_vol = 127;
|
|
ch->leftvol = left_total;
|
|
ch->rightvol = right_total;
|
|
ch->thesfx = loop->sfx;
|
|
ch->doppler = loop->doppler;
|
|
ch->dopplerScale = loop->dopplerScale;
|
|
ch->oldDopplerScale = loop->oldDopplerScale;
|
|
numLoopChannels++;
|
|
if (numLoopChannels == MAX_CHANNELS) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
/*
|
|
=================
|
|
S_ByteSwapRawSamples
|
|
|
|
If raw data has been loaded in little endien binary form, this must be done.
|
|
If raw data was calculated, as with ADPCM, this should not be called.
|
|
=================
|
|
*/
|
|
void S_ByteSwapRawSamples( int samples, int width, int s_channels, const byte *data ) {
|
|
int i;
|
|
|
|
if ( width != 2 ) {
|
|
return;
|
|
}
|
|
if ( LittleShort( 256 ) == 256 ) {
|
|
return;
|
|
}
|
|
|
|
if ( s_channels == 2 ) {
|
|
samples <<= 1;
|
|
}
|
|
for ( i = 0 ; i < samples ; i++ ) {
|
|
((short *)data)[i] = LittleShort( ((short *)data)[i] );
|
|
}
|
|
}
|
|
|
|
portable_samplepair_t *S_GetRawSamplePointer() {
|
|
return s_rawsamples;
|
|
}
|
|
|
|
/*
|
|
============
|
|
S_RawSamples
|
|
|
|
Music streaming
|
|
============
|
|
*/
|
|
void S_RawSamples( int samples, int rate, int width, int s_channels, const byte *data, float volume ) {
|
|
int i;
|
|
int src, dst;
|
|
float scale;
|
|
int intVolume;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
intVolume = 256 * volume;
|
|
|
|
if ( s_rawend < s_soundtime ) {
|
|
Com_DPrintf( "S_RawSamples: resetting minimum: %i < %i\n", s_rawend, s_soundtime );
|
|
s_rawend = s_soundtime;
|
|
}
|
|
|
|
scale = (float)rate / dma.speed;
|
|
|
|
//Com_Printf ("%i < %i < %i\n", s_soundtime, s_paintedtime, s_rawend);
|
|
if (s_channels == 2 && width == 2)
|
|
{
|
|
if (scale == 1.0)
|
|
{ // optimized case
|
|
for (i=0 ; i<samples ; i++)
|
|
{
|
|
dst = s_rawend&(MAX_RAW_SAMPLES-1);
|
|
s_rawend++;
|
|
s_rawsamples[dst].left = ((short *)data)[i*2] * intVolume;
|
|
s_rawsamples[dst].right = ((short *)data)[i*2+1] * intVolume;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
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 (s_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 (s_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;
|
|
}
|
|
}
|
|
else if (s_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;
|
|
}
|
|
}
|
|
|
|
if ( s_rawend > s_soundtime + MAX_RAW_SAMPLES ) {
|
|
Com_DPrintf( "S_RawSamples: overflowed %i > %i\n", s_rawend, s_soundtime );
|
|
}
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
/*
|
|
=====================
|
|
S_UpdateEntityPosition
|
|
|
|
let the sound system know where an entity currently is
|
|
======================
|
|
*/
|
|
void S_UpdateEntityPosition( int entityNum, const vec3_t origin ) {
|
|
if ( entityNum < 0 || entityNum > MAX_GENTITIES ) {
|
|
Com_Error( ERR_DROP, "S_UpdateEntityPosition: bad entitynum %i", entityNum );
|
|
}
|
|
VectorCopy( origin, loopSounds[entityNum].origin );
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
S_Respatialize
|
|
|
|
Change the volumes of all the playing sounds for changes in their positions
|
|
============
|
|
*/
|
|
void S_Respatialize( int entityNum, const vec3_t head, vec3_t axis[3], int inwater ) {
|
|
int i;
|
|
channel_t *ch;
|
|
vec3_t origin;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
listener_number = entityNum;
|
|
VectorCopy(head, listener_origin);
|
|
VectorCopy(axis[0], listener_axis[0]);
|
|
VectorCopy(axis[1], listener_axis[1]);
|
|
VectorCopy(axis[2], listener_axis[2]);
|
|
|
|
// update spatialization for dynamic sounds
|
|
ch = s_channels;
|
|
for ( i = 0 ; i < MAX_CHANNELS ; i++, ch++ ) {
|
|
if ( !ch->thesfx ) {
|
|
continue;
|
|
}
|
|
// anything coming from the view entity will always be full volume
|
|
if (ch->entnum == listener_number) {
|
|
ch->leftvol = ch->master_vol;
|
|
ch->rightvol = ch->master_vol;
|
|
} else {
|
|
if (ch->fixed_origin) {
|
|
VectorCopy( ch->origin, origin );
|
|
} else {
|
|
VectorCopy( loopSounds[ ch->entnum ].origin, origin );
|
|
}
|
|
|
|
S_SpatializeOrigin (origin, ch->master_vol, &ch->leftvol, &ch->rightvol);
|
|
}
|
|
}
|
|
|
|
// add loopsounds
|
|
S_AddLoopSounds ();
|
|
}
|
|
|
|
|
|
/*
|
|
========================
|
|
S_ScanChannelStarts
|
|
|
|
Returns qtrue if any new sounds were started since the last mix
|
|
========================
|
|
*/
|
|
qboolean S_ScanChannelStarts( void ) {
|
|
channel_t *ch;
|
|
int i;
|
|
qboolean newSamples;
|
|
|
|
newSamples = qfalse;
|
|
ch = s_channels;
|
|
|
|
for (i=0; i<MAX_CHANNELS ; i++, ch++) {
|
|
if ( !ch->thesfx ) {
|
|
continue;
|
|
}
|
|
// if this channel was just started this frame,
|
|
// set the sample count to it begins mixing
|
|
// into the very first sample
|
|
if ( ch->startSample == START_SAMPLE_IMMEDIATE ) {
|
|
ch->startSample = s_paintedtime;
|
|
newSamples = qtrue;
|
|
continue;
|
|
}
|
|
|
|
// if it is completely finished by now, clear it
|
|
if ( ch->startSample + (ch->thesfx->soundLength) <= s_paintedtime ) {
|
|
S_ChannelFree(ch);
|
|
}
|
|
}
|
|
|
|
return newSamples;
|
|
}
|
|
|
|
/*
|
|
============
|
|
S_Update
|
|
|
|
Called once each time through the main loop
|
|
============
|
|
*/
|
|
void S_Update( void ) {
|
|
int i;
|
|
int total;
|
|
channel_t *ch;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
Com_DPrintf ("not started or muted\n");
|
|
return;
|
|
}
|
|
|
|
//
|
|
// debugging output
|
|
//
|
|
if ( s_show->integer == 2 ) {
|
|
total = 0;
|
|
ch = s_channels;
|
|
for (i=0 ; i<MAX_CHANNELS; i++, ch++) {
|
|
if (ch->thesfx && (ch->leftvol || ch->rightvol) ) {
|
|
Com_Printf ("%f %f %s\n", ch->leftvol, ch->rightvol, ch->thesfx->soundName);
|
|
total++;
|
|
}
|
|
}
|
|
|
|
Com_Printf ("----(%i)---- painted: %i\n", total, s_paintedtime);
|
|
}
|
|
|
|
// add raw data from streamed samples
|
|
S_UpdateBackgroundTrack();
|
|
|
|
// mix some sound
|
|
S_Update_();
|
|
}
|
|
|
|
void S_GetSoundtime(void)
|
|
{
|
|
int samplepos;
|
|
static int buffers;
|
|
static int oldsamplepos;
|
|
int fullsamples;
|
|
|
|
fullsamples = dma.samples / dma.channels;
|
|
|
|
// it is possible to miscount buffers if it has wrapped twice between
|
|
// calls to S_Update. Oh well.
|
|
samplepos = SNDDMA_GetDMAPos();
|
|
if (samplepos < oldsamplepos)
|
|
{
|
|
buffers++; // buffer wrapped
|
|
|
|
if (s_paintedtime > 0x40000000)
|
|
{ // time to chop things off to avoid 32 bit limits
|
|
buffers = 0;
|
|
s_paintedtime = fullsamples;
|
|
S_StopAllSounds ();
|
|
}
|
|
}
|
|
oldsamplepos = samplepos;
|
|
|
|
s_soundtime = buffers*fullsamples + samplepos/dma.channels;
|
|
|
|
#if 0
|
|
// check to make sure that we haven't overshot
|
|
if (s_paintedtime < s_soundtime)
|
|
{
|
|
Com_DPrintf ("S_Update_ : overflow\n");
|
|
s_paintedtime = s_soundtime;
|
|
}
|
|
#endif
|
|
|
|
if ( dma.submission_chunk < 256 ) {
|
|
s_paintedtime = s_soundtime + s_mixPreStep->value * dma.speed;
|
|
} else {
|
|
s_paintedtime = s_soundtime + dma.submission_chunk;
|
|
}
|
|
}
|
|
|
|
|
|
void S_Update_(void) {
|
|
unsigned endtime;
|
|
int samps;
|
|
static float lastTime = 0.0f;
|
|
float ma, op;
|
|
float thisTime, sane;
|
|
static int ot = -1;
|
|
|
|
if ( !s_soundStarted || s_soundMuted ) {
|
|
return;
|
|
}
|
|
|
|
thisTime = Com_Milliseconds();
|
|
|
|
// Updates s_soundtime
|
|
S_GetSoundtime();
|
|
|
|
if (s_soundtime == ot) {
|
|
return;
|
|
}
|
|
ot = s_soundtime;
|
|
|
|
// clear any sound effects that end before the current time,
|
|
// and start any new sounds
|
|
S_ScanChannelStarts();
|
|
|
|
sane = thisTime - lastTime;
|
|
if (sane<11) {
|
|
sane = 11; // 85hz
|
|
}
|
|
|
|
ma = s_mixahead->value * dma.speed;
|
|
op = s_mixPreStep->value + sane*dma.speed*0.01;
|
|
|
|
if (op < ma) {
|
|
ma = op;
|
|
}
|
|
|
|
// mix ahead of current position
|
|
endtime = s_soundtime + ma;
|
|
|
|
// mix to an even submission block size
|
|
endtime = (endtime + dma.submission_chunk-1)
|
|
& ~(dma.submission_chunk-1);
|
|
|
|
// never mix more than the complete buffer
|
|
samps = dma.samples >> (dma.channels-1);
|
|
if (endtime - s_soundtime > samps)
|
|
endtime = s_soundtime + samps;
|
|
|
|
|
|
|
|
SNDDMA_BeginPainting ();
|
|
|
|
S_PaintChannels (endtime);
|
|
|
|
SNDDMA_Submit ();
|
|
|
|
lastTime = thisTime;
|
|
}
|
|
|
|
/*
|
|
===============================================================================
|
|
|
|
console functions
|
|
|
|
===============================================================================
|
|
*/
|
|
|
|
void S_Play_f( void ) {
|
|
int i;
|
|
sfxHandle_t h;
|
|
char name[256];
|
|
|
|
i = 1;
|
|
while ( i<Cmd_Argc() ) {
|
|
if ( !Q_strrchr(Cmd_Argv(i), '.') ) {
|
|
Com_sprintf( name, sizeof(name), "%s.wav", Cmd_Argv(1) );
|
|
} else {
|
|
Q_strncpyz( name, Cmd_Argv(i), sizeof(name) );
|
|
}
|
|
h = S_RegisterSound( name, qfalse );
|
|
if( h ) {
|
|
S_StartLocalSound( h, CHAN_LOCAL_SOUND );
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
void S_Music_f( void ) {
|
|
int c;
|
|
|
|
c = Cmd_Argc();
|
|
|
|
if ( c == 2 ) {
|
|
S_StartBackgroundTrack( Cmd_Argv(1), Cmd_Argv(1) );
|
|
s_backgroundLoop[0] = 0;
|
|
} else if ( c == 3 ) {
|
|
S_StartBackgroundTrack( Cmd_Argv(1), Cmd_Argv(2) );
|
|
} else {
|
|
Com_Printf ("music <musicfile> [loopfile]\n");
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
void S_SoundList_f( void ) {
|
|
int i;
|
|
sfx_t *sfx;
|
|
int size, total;
|
|
char type[4][16];
|
|
char mem[2][16];
|
|
|
|
strcpy(type[0], "16bit");
|
|
strcpy(type[1], "adpcm");
|
|
strcpy(type[2], "daub4");
|
|
strcpy(type[3], "mulaw");
|
|
strcpy(mem[0], "paged out");
|
|
strcpy(mem[1], "resident ");
|
|
total = 0;
|
|
for (sfx=s_knownSfx, i=0 ; i<s_numSfx ; i++, sfx++) {
|
|
size = sfx->soundLength;
|
|
total += size;
|
|
Com_Printf("%6i[%s] : %s[%s]\n", size, type[sfx->soundCompressionMethod], sfx->soundName, mem[sfx->inMemory] );
|
|
}
|
|
Com_Printf ("Total resident: %i\n", total);
|
|
S_DisplayFreeMemory();
|
|
}
|
|
|
|
|
|
/*
|
|
===============================================================================
|
|
|
|
background music functions
|
|
|
|
===============================================================================
|
|
*/
|
|
|
|
int FGetLittleLong( fileHandle_t f ) {
|
|
int v;
|
|
|
|
FS_Read( &v, sizeof(v), f );
|
|
|
|
return LittleLong( v);
|
|
}
|
|
|
|
int FGetLittleShort( fileHandle_t f ) {
|
|
short v;
|
|
|
|
FS_Read( &v, sizeof(v), f );
|
|
|
|
return LittleShort( v);
|
|
}
|
|
|
|
// returns the length of the data in the chunk, or 0 if not found
|
|
int S_FindWavChunk( fileHandle_t f, char *chunk ) {
|
|
char name[5];
|
|
int len;
|
|
int r;
|
|
|
|
name[4] = 0;
|
|
len = 0;
|
|
r = FS_Read( name, 4, f );
|
|
if ( r != 4 ) {
|
|
return 0;
|
|
}
|
|
len = FGetLittleLong( f );
|
|
if ( len < 0 || len > 0xfffffff ) {
|
|
len = 0;
|
|
return 0;
|
|
}
|
|
len = (len + 1 ) & ~1; // pad to word boundary
|
|
// s_nextWavChunk += len + 8;
|
|
|
|
if ( strcmp( name, chunk ) ) {
|
|
return 0;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
======================
|
|
S_StopBackgroundTrack
|
|
======================
|
|
*/
|
|
void S_StopBackgroundTrack( void ) {
|
|
if ( !s_backgroundFile ) {
|
|
return;
|
|
}
|
|
Sys_EndStreamedFile( s_backgroundFile );
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
s_rawend = 0;
|
|
}
|
|
|
|
/*
|
|
======================
|
|
S_StartBackgroundTrack
|
|
======================
|
|
*/
|
|
void S_StartBackgroundTrack( const char *intro, const char *loop ){
|
|
int len;
|
|
char dump[16];
|
|
char name[MAX_QPATH];
|
|
|
|
if ( !intro ) {
|
|
intro = "";
|
|
}
|
|
if ( !loop || !loop[0] ) {
|
|
loop = intro;
|
|
}
|
|
Com_DPrintf( "S_StartBackgroundTrack( %s, %s )\n", intro, loop );
|
|
|
|
Q_strncpyz( name, intro, sizeof( name ) - 4 );
|
|
COM_DefaultExtension( name, sizeof( name ), ".wav" );
|
|
|
|
if ( !intro[0] ) {
|
|
return;
|
|
}
|
|
|
|
Q_strncpyz( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
|
|
|
|
// close the background track, but DON'T reset s_rawend
|
|
// if restarting the same back ground track
|
|
if ( s_backgroundFile ) {
|
|
Sys_EndStreamedFile( s_backgroundFile );
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
}
|
|
|
|
//
|
|
// open up a wav file and get all the info
|
|
//
|
|
FS_FOpenFileRead( name, &s_backgroundFile, qtrue );
|
|
if ( !s_backgroundFile ) {
|
|
Com_Printf( S_COLOR_YELLOW "WARNING: couldn't open music file %s\n", name );
|
|
return;
|
|
}
|
|
|
|
// skip the riff wav header
|
|
|
|
FS_Read(dump, 12, s_backgroundFile);
|
|
|
|
if ( !S_FindWavChunk( s_backgroundFile, "fmt " ) ) {
|
|
Com_Printf( "No fmt chunk in %s\n", name );
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
return;
|
|
}
|
|
|
|
// save name for soundinfo
|
|
s_backgroundInfo.format = FGetLittleShort( s_backgroundFile );
|
|
s_backgroundInfo.channels = FGetLittleShort( s_backgroundFile );
|
|
s_backgroundInfo.rate = FGetLittleLong( s_backgroundFile );
|
|
FGetLittleLong( s_backgroundFile );
|
|
FGetLittleShort( s_backgroundFile );
|
|
s_backgroundInfo.width = FGetLittleShort( s_backgroundFile ) / 8;
|
|
|
|
if ( s_backgroundInfo.format != WAV_FORMAT_PCM ) {
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
Com_Printf("Not a microsoft PCM format wav: %s\n", name);
|
|
return;
|
|
}
|
|
|
|
if ( s_backgroundInfo.channels != 2 || s_backgroundInfo.rate != 22050 ) {
|
|
Com_Printf(S_COLOR_YELLOW "WARNING: music file %s is not 22k stereo\n", name );
|
|
}
|
|
|
|
if ( ( len = S_FindWavChunk( s_backgroundFile, "data" ) ) == 0 ) {
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
Com_Printf("No data chunk in %s\n", name);
|
|
return;
|
|
}
|
|
|
|
s_backgroundInfo.samples = len / (s_backgroundInfo.width * s_backgroundInfo.channels);
|
|
|
|
s_backgroundSamples = s_backgroundInfo.samples;
|
|
|
|
//
|
|
// start the background streaming
|
|
//
|
|
Sys_BeginStreamedFile( s_backgroundFile, 0x10000 );
|
|
}
|
|
|
|
/*
|
|
======================
|
|
S_UpdateBackgroundTrack
|
|
======================
|
|
*/
|
|
void S_UpdateBackgroundTrack( void ) {
|
|
int bufferSamples;
|
|
int fileSamples;
|
|
byte raw[30000]; // just enough to fit in a mac stack frame
|
|
int fileBytes;
|
|
int r;
|
|
static float musicVolume = 0.5f;
|
|
|
|
if ( !s_backgroundFile ) {
|
|
return;
|
|
}
|
|
|
|
// graeme see if this is OK
|
|
musicVolume = (musicVolume + (s_musicVolume->value * 2))/4.0f;
|
|
|
|
// don't bother playing anything if musicvolume is 0
|
|
if ( musicVolume <= 0 ) {
|
|
return;
|
|
}
|
|
|
|
// see how many samples should be copied into the raw buffer
|
|
if ( s_rawend < s_soundtime ) {
|
|
s_rawend = s_soundtime;
|
|
}
|
|
|
|
while ( s_rawend < s_soundtime + MAX_RAW_SAMPLES ) {
|
|
bufferSamples = MAX_RAW_SAMPLES - (s_rawend - s_soundtime);
|
|
|
|
// decide how much data needs to be read from the file
|
|
fileSamples = bufferSamples * s_backgroundInfo.rate / dma.speed;
|
|
|
|
// don't try and read past the end of the file
|
|
if ( fileSamples > s_backgroundSamples ) {
|
|
fileSamples = s_backgroundSamples;
|
|
}
|
|
|
|
// our max buffer size
|
|
fileBytes = fileSamples * (s_backgroundInfo.width * s_backgroundInfo.channels);
|
|
if ( fileBytes > sizeof(raw) ) {
|
|
fileBytes = sizeof(raw);
|
|
fileSamples = fileBytes / (s_backgroundInfo.width * s_backgroundInfo.channels);
|
|
}
|
|
|
|
r = Sys_StreamedRead( raw, 1, fileBytes, s_backgroundFile );
|
|
if ( r != fileBytes ) {
|
|
Com_Printf("StreamedRead failure on music track\n");
|
|
S_StopBackgroundTrack();
|
|
return;
|
|
}
|
|
|
|
// byte swap if needed
|
|
S_ByteSwapRawSamples( fileSamples, s_backgroundInfo.width, s_backgroundInfo.channels, raw );
|
|
|
|
// add to raw buffer
|
|
S_RawSamples( fileSamples, s_backgroundInfo.rate,
|
|
s_backgroundInfo.width, s_backgroundInfo.channels, raw, musicVolume );
|
|
|
|
s_backgroundSamples -= fileSamples;
|
|
if ( !s_backgroundSamples ) {
|
|
// loop
|
|
if (s_backgroundLoop[0]) {
|
|
Sys_EndStreamedFile( s_backgroundFile );
|
|
FS_FCloseFile( s_backgroundFile );
|
|
s_backgroundFile = 0;
|
|
S_StartBackgroundTrack( s_backgroundLoop, s_backgroundLoop );
|
|
if ( !s_backgroundFile ) {
|
|
return; // loop failed to restart
|
|
}
|
|
} else {
|
|
s_backgroundFile = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
======================
|
|
S_FreeOldestSound
|
|
======================
|
|
*/
|
|
|
|
void S_FreeOldestSound() {
|
|
int i, oldest, used;
|
|
sfx_t *sfx;
|
|
sndBuffer *buffer, *nbuffer;
|
|
|
|
oldest = Com_Milliseconds();
|
|
used = 0;
|
|
|
|
for (i=1 ; i < s_numSfx ; i++) {
|
|
sfx = &s_knownSfx[i];
|
|
if (sfx->inMemory && sfx->lastTimeUsed<oldest) {
|
|
used = i;
|
|
oldest = sfx->lastTimeUsed;
|
|
}
|
|
}
|
|
|
|
sfx = &s_knownSfx[used];
|
|
|
|
Com_DPrintf("S_FreeOldestSound: freeing sound %s\n", sfx->soundName);
|
|
|
|
buffer = sfx->soundData;
|
|
while(buffer != NULL) {
|
|
nbuffer = buffer->next;
|
|
SND_free(buffer);
|
|
buffer = nbuffer;
|
|
}
|
|
sfx->inMemory = qfalse;
|
|
sfx->soundData = NULL;
|
|
}
|