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The original Quake 2 sources as originally released under the GPL license on December 21, 2001.
This commit is contained in:
Travis Bradshaw
164
client/snd_loc.h
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164
client/snd_loc.h
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/*
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Copyright (C) 1997-2001 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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// snd_loc.h -- private sound functions
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// !!! if this is changed, the asm code must change !!!
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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
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{
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int length;
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int loopstart;
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int speed; // not needed, because converted on load?
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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 sfx_s
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{
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char name[MAX_QPATH];
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int registration_sequence;
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sfxcache_t *cache;
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char *truename;
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} sfx_t;
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// a playsound_t will be generated by each call to S_StartSound,
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// when the mixer reaches playsound->begin, the playsound will
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// be assigned to a channel
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typedef struct playsound_s
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{
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struct playsound_s *prev, *next;
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sfx_t *sfx;
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float volume;
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float attenuation;
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int entnum;
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int entchannel;
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qboolean fixed_origin; // use origin field instead of entnum's origin
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vec3_t origin;
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unsigned begin; // begin on this sample
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} playsound_t;
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typedef struct
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{
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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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byte *buffer;
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} dma_t;
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// !!! if this is changed, the asm code must change !!!
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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 OBSOLETE?
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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; // only use if fixed_origin is set
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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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qboolean fixed_origin; // use origin instead of fetching entnum's origin
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qboolean autosound; // from an entity->sound, cleared each frame
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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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/*
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====================================================================
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SYSTEM SPECIFIC FUNCTIONS
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====================================================================
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*/
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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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void SNDDMA_BeginPainting (void);
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void SNDDMA_Submit(void);
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//====================================================================
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#define MAX_CHANNELS 32
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extern channel_t channels[MAX_CHANNELS];
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extern int paintedtime;
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extern int s_rawend;
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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 dma_t dma;
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extern playsound_t s_pendingplays;
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#define MAX_RAW_SAMPLES 8192
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extern portable_samplepair_t s_rawsamples[MAX_RAW_SAMPLES];
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extern cvar_t *s_volume;
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extern cvar_t *s_nosound;
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extern cvar_t *s_loadas8bit;
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extern cvar_t *s_khz;
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extern cvar_t *s_show;
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extern cvar_t *s_mixahead;
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extern cvar_t *s_testsound;
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extern cvar_t *s_primary;
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wavinfo_t GetWavinfo (char *name, byte *wav, int wavlength);
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void S_InitScaletable (void);
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sfxcache_t *S_LoadSound (sfx_t *s);
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void S_IssuePlaysound (playsound_t *ps);
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void S_PaintChannels(int endtime);
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// picks a channel based on priorities, empty slots, number of channels
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channel_t *S_PickChannel(int entnum, int entchannel);
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// spatializes a channel
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void S_Spatialize(channel_t *ch);
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