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https://github.com/nzp-team/glquake.git
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255 lines
10 KiB
C
255 lines
10 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// sound.h -- client sound i/o functions
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#ifndef __SOUND__
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#define __SOUND__
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#define DEFAULT_SOUND_PACKET_VOLUME 255
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#define DEFAULT_SOUND_PACKET_ATTENUATION 1.0
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// !!! if this is changed, it much be changed in asm_i386.h too !!!
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typedef struct
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{
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int left;
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int right;
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} portable_samplepair_t;
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typedef struct sfx_s
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{
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char name[MAX_QPATH];
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cache_user_t cache;
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} sfx_t;
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// !!! if this is changed, it much be changed in asm_i386.h too !!!
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typedef struct
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{
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int length;
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int loopstart;
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int speed;
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int width;
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int stereo;
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byte data[1]; // variable sized
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} sfxcache_t;
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typedef struct
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{
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qboolean gamealive;
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qboolean soundalive;
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qboolean splitbuffer;
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int channels;
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int samples; // mono samples in buffer
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int submission_chunk; // don't mix less than this #
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int samplepos; // in mono samples
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int samplebits;
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int speed;
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unsigned char *buffer;
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} dma_t;
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// !!! if this is changed, it much be changed in asm_i386.h too !!!
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typedef struct
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{
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sfx_t *sfx; // sfx number
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int leftvol; // 0-255 volume
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int rightvol; // 0-255 volume
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int end; // end time in global paintsamples
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int pos; // sample position in sfx
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int looping; // where to loop, -1 = no looping
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int entnum; // to allow overriding a specific sound
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int entchannel; //
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vec3_t origin; // origin of sound effect
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vec_t dist_mult; // distance multiplier (attenuation/clipK)
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int master_vol; // 0-255 master volume
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} channel_t;
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typedef struct
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{
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int rate;
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int width;
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int channels;
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int loopstart;
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int samples;
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int dataofs; // chunk starts this many bytes from file start
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} wavinfo_t;
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void S_Init (void);
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void S_Startup (void);
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void S_Shutdown (void);
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void S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation);
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void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation);
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void S_StopSound (int entnum, int entchannel);
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void S_StopAllSounds(qboolean clear);
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void S_ClearBuffer (void);
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void S_Update (vec3_t origin, vec3_t v_forward, vec3_t v_right, vec3_t v_up);
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void S_ExtraUpdate (void);
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sfx_t *S_PrecacheSound (char *sample);
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void S_TouchSound (char *sample);
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void S_ClearPrecache (void);
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void S_BeginPrecaching (void);
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void S_EndPrecaching (void);
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void S_PaintChannels(int endtime);
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void S_InitPaintChannels (void);
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// picks a channel based on priorities, empty slots, number of channels
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channel_t *SND_PickChannel(int entnum, int entchannel);
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// spatializes a channel
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void SND_Spatialize(channel_t *ch);
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// initializes cycling through a DMA buffer and returns information on it
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qboolean SNDDMA_Init(void);
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// gets the current DMA position
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int SNDDMA_GetDMAPos(void);
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// shutdown the DMA xfer.
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void SNDDMA_Shutdown(void);
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// ====================================================================
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// User-setable variables
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// ====================================================================
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#define MAX_CHANNELS 128
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#define MAX_DYNAMIC_CHANNELS 8
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extern channel_t channels[MAX_CHANNELS];
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// 0 to MAX_DYNAMIC_CHANNELS-1 = normal entity sounds
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// MAX_DYNAMIC_CHANNELS to MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS -1 = water, etc
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// MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS to total_channels = static sounds
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extern int total_channels;
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//
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// Fake dma is a synchronous faking of the DMA progress used for
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// isolating performance in the renderer. The fakedma_updates is
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// number of times S_Update() is called per second.
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//
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extern qboolean fakedma;
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extern int fakedma_updates;
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extern int paintedtime;
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extern vec3_t listener_origin;
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extern vec3_t listener_forward;
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extern vec3_t listener_right;
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extern vec3_t listener_up;
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extern volatile dma_t *shm;
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extern volatile dma_t sn;
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extern vec_t sound_nominal_clip_dist;
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extern cvar_t loadas8bit;
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extern cvar_t bgmvolume;
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extern cvar_t volume;
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extern qboolean snd_initialized;
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extern int snd_blocked;
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void S_LocalSound (char *s);
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sfxcache_t *S_LoadSound (sfx_t *s);
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wavinfo_t GetWavinfo (char *name, byte *wav, int wavlength);
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void SND_InitScaletable (void);
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void SNDDMA_Submit(void);
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void S_AmbientOff (void);
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void S_AmbientOn (void);
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//
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// cypress -- sound dot product square root LUTs
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//
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float SND_InverseSpatializationRScaleLUT[126] = {
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0.0f, 0.12247448713915896f, 0.1732050807568878f, 0.21213203435596434f,
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0.2449489742783179f, 0.2738612787525832f, 0.30000000000000016f, 0.32403703492039315f,
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0.3464101615137756f, 0.3674234614174769f, 0.38729833462074187f, 0.4062019202317982f,
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0.4242640687119287f, 0.44158804331639256f, 0.4582575694955842f, 0.4743416490252571f,
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0.4898979485566358f, 0.5049752469181041f, 0.5196152422706635f, 0.5338539126015658f,
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0.5477225575051664f, 0.5612486080160914f, 0.5744562646538032f, 0.5873670062235368f,
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0.6000000000000003f, 0.6123724356957948f, 0.62449979983984f, 0.6363961030678931f,
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0.6480740698407863f, 0.6595452979136462f, 0.6708203932499373f, 0.6819090848492931f,
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0.6928203230275513f, 0.7035623639735148f, 0.7141428428542853f, 0.7245688373094723f,
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0.7348469228349538f, 0.7449832212875673f, 0.7549834435270754f, 0.764852927038918f,
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0.7745966692414837f, 0.7842193570679065f, 0.7937253933193775f, 0.8031189202104508f,
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0.8124038404635964f, 0.8215838362577496f, 0.8306623862918079f, 0.8396427811873336f,
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0.8485281374238574f, 0.8573214099741128f, 0.866025403784439f, 0.8746427842267954f,
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0.8831760866327851f, 0.8916277250063508f, 0.9000000000000004f, 0.9082951062292479f,
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0.9165151389911684f, 0.9246621004453469f, 0.9327379053088819f, 0.9407443861113394f,
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0.9486832980505142f, 0.9565563234854499f, 0.9643650760992959f, 0.9721111047611795f,
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0.9797958971132716f, 0.9874208829065754f, 0.9949874371066203f, 1.0024968827881715f,
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1.009950493836208f, 1.0173494974687907f, 1.0246950765959602f, 1.0319883720275151f,
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1.0392304845413267f, 1.0464224768228179f, 1.0535653752852743f, 1.0606601717798216f,
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1.0677078252031316f, 1.0747092630102342f, 1.081665382639197f, 1.0885770528538625f,
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1.0954451150103326f, 1.1022703842524304f, 1.109053650640942f, 1.1157956802210702f,
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1.1224972160321829f, 1.1291589790636218f, 1.135781669160055f, 1.1423659658795866f,
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1.1489125293076061f, 1.1554220008291347f, 1.1618950038622256f, 1.1683321445547927f,
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1.1747340124470735f, 1.181101181101772f, 1.1874342087037921f, 1.1937336386313326f,
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1.2000000000000004f, 1.2062338081814823f, 1.2124355652982146f, 1.2186057606953946f,
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1.2247448713915896f, 1.2308533625091176f, 1.2369316876852987f, 1.242980289465606f,
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1.24899959967968f, 1.2549900398011138f, 1.2609520212918497f, 1.2668859459319932f,
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1.272792206135786f, 1.2786711852544426f, 1.2845232578665133f, 1.2903487900563946f,
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1.2961481396815726f, 1.301921656629154f, 1.3076696830622025f, 1.3133925536563702f,
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1.3190905958272925f, 1.3247641299491775f, 1.3304134695650076f, 1.3360389215887394f,
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1.3416407864998743f, 1.3472193585307484f, 1.3527749258468689f, 1.358307770720613f,
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1.363818169698586f, 1.3693063937629157f, 1.3747727084867525f, 1.3802173741842267f,
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1.3856406460551023f, 1.391042774324356f, 1.3964240043768947f, 1.4017845768876191f,
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1.4071247279470294f, 1.412444689182554f
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};
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float SND_InverseSpatializationLScaleLUT[126] = {
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1.4142135623730951f, 1.408900280360537f, 1.40356688476182f, 1.3982131454109563f,
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1.3928388277184118f, 1.3874436925511606f, 1.3820274961085253f, 1.3765899897936205f,
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1.3711309200802089f, 1.3656500283747661f, 1.3601470508735443f, 1.3546217184144067f,
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1.349073756323204f, 1.34350288425444f, 1.3379088160259651f, 1.3322912594474228f,
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1.3266499161421599f, 1.3209844813622904f, 1.3152946437965904f, 1.3095800853708794f,
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1.3038404810405297f, 1.2980754985747167f, 1.2922847983320085f, 1.2864680330268607f,
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1.2806248474865696f, 1.2747548783981961f, 1.268857754044952f, 1.2629330940315087f,
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1.2569805089976533f, 1.2509996003196802f, 1.2449899597988732f, 1.2389511693363866f,
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1.232882800593795f, 1.2267844146385294f, 1.22065556157337f, 1.2144957801491119f,
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1.208304597359457f, 1.2020815280171306f, 1.1958260743101397f, 1.1895377253370318f,
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1.183215956619923f, 1.1768602295939816f, 1.1704699910719623f, 1.1640446726822813f,
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1.1575836902790222f, 1.1510864433221335f, 1.1445523142259595f, 1.137980667674104f,
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1.1313708498984758f, 1.124722187920199f, 1.1180339887498945f, 1.111305538544643f,
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1.1045361017187258f, 1.097724920005007f, 1.090871211463571f, 1.0839741694339398f,
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1.0770329614269005f, 1.0700467279516344f, 1.0630145812734646f, 1.0559356040971435f,
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1.0488088481701512f, 1.0416333327999825f, 1.0344080432788596f, 1.0271319292087064f,
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1.0198039027185566f, 1.012422836565829f, 1.0049875621120887f, 0.9974968671629998f,
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0.9899494936611661f, 0.9823441352194247f, 0.974679434480896f, 0.9669539802906855f,
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0.9591663046625435f, 0.951314879522022f, 0.94339811320566f, 0.9354143466934849f,
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0.9273618495495699f, 0.9192388155425113f, 0.9110433579144295f, 0.902773504263389f,
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0.8944271909999154f, 0.886002257333467f, 0.8774964387392117f, 0.8689073598491378f,
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0.8602325267042622f, 0.8514693182963196f, 0.8426149773176353f, 0.8336666000266528f,
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0.8246211251235316f, 0.8154753215150039f, 0.8062257748298544f, 0.7968688725254608f,
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0.7874007874011805f, 0.7778174593052016f, 0.7681145747868602f, 0.7582875444051543f,
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0.7483314773547876f, 0.7382411530116693f, 0.728010988928051f, 0.7176350047203655f,
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0.7071067811865467f, 0.6964194138592051f, 0.6855654600401035f, 0.6745368781616012f,
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0.663324958071079f, 0.651920240520264f, 0.6403124237432839f, 0.6284902544988258f,
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0.6164414002968966f, 0.6041522986797276f, 0.5916079783099606f, 0.5787918451395102f,
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0.5656854249492369f, 0.5522680508593619f, 0.5385164807134492f, 0.5244044240850745f,
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0.5099019513592772f, 0.4949747468305819f, 0.4795831523312705f, 0.46368092477478373f,
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0.4472135954999564f, 0.4301162633521297f, 0.41231056256176435f, 0.39370039370058874f,
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0.3741657386773922f, 0.35355339059327173f, 0.3316624790355378f, 0.30822070014844644f,
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0.2828427124746164f, 0.2549509756796363f, 0.2236067977499756f, 0.187082869338693f,
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0.14142135623730406f, 0.07071067811864379f
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};
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#endif
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