mirror of
https://git.code.sf.net/p/quake/quakeforge
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142 lines
4.9 KiB
C
142 lines
4.9 KiB
C
/*
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snd_render.h
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Sound renderer plugin stuff
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Copyright (C) 2002 Bill Currie
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Author: Bill Currie <bill@taniwha.org>
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Date: Jan 31 2003
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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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifndef __snd_render_h
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#define __snd_render_h
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#include "QF/zone.h"
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// !!! if this is changed, it must be changed in asm_i386.h too !!!
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typedef struct portable_samplepair_s {
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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 wavinfo_s {
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unsigned rate;
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unsigned width;
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unsigned channels;
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unsigned loopstart;
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unsigned samples;
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unsigned dataofs; // chunk starts this many bytes from file start
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unsigned datalen; // chunk bytes
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} wavinfo_t;
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typedef struct channel_s channel_t;
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typedef struct sfxbuffer_s sfxbuffer_t;
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struct sfxbuffer_s {
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unsigned head; // ring buffer head position in sampels
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unsigned tail; // ring buffer tail position in sampels
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unsigned length; // length of buffer in samples
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unsigned pos; // position of tail within full stream
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unsigned bps; // bytes per sample: 1 2 4 usually
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void (*paint) (channel_t *ch, sfxbuffer_t *buffer, int count);
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void (*advance) (sfxbuffer_t *buffer, unsigned int count);
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void (*setpos) (sfxbuffer_t *buffer, unsigned int pos);
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sfx_t *sfx;
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byte data[4];
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};
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typedef struct sfxstream_s {
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sfx_t *sfx;
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void *file;
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wavinfo_t wavinfo;
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int pos;
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void (*resample)(sfxbuffer_t *, byte *, int, void *);
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int (*read)(void *file, byte *data, int bytes, wavinfo_t *info);
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int (*seek)(void *file, int pos, wavinfo_t *info);
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sfxbuffer_t buffer;
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} sfxstream_t;
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typedef struct sfxblock_s {
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sfx_t *sfx;
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void *file;
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wavinfo_t wavinfo;
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cache_user_t cache;
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} sfxblock_t;
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// !!! if this is changed, it much be changed in asm_i386.h too !!!
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struct channel_s {
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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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unsigned end; // end time in global paintsamples
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unsigned pos; // sample position in sfx
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unsigned 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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int phase; // phase shift between l-r in samples
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int oldphase; // phase shift between l-r in samples
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};
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void SND_PaintChannels(unsigned int endtime);
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void SND_ResampleMono (sfxbuffer_t *sc, byte *data, int length, void *prev);
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void SND_ResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev);
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void SND_NoResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev);
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sfxbuffer_t *SND_GetCache (long samples, int rate, int inwidth, int channels,
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sfxblock_t *block, cache_allocator_t allocator);
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void SND_InitScaletable (void);
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void SND_Load (sfx_t *sfx);
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void SND_CallbackLoad (void *object, cache_allocator_t allocator);
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void SND_LoadOgg (QFile *file, sfx_t *sfx, char *realname);
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void SND_LoadWav (QFile *file, sfx_t *sfx, char *realname);
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void SND_LoadMidi (QFile *file, sfx_t *sfx, char *realname);
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wavinfo_t *SND_CacheWavinfo (sfx_t *sfx);
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wavinfo_t *SND_StreamWavinfo (sfx_t *sfx);
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sfxbuffer_t *SND_CacheTouch (sfx_t *sfx);
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sfxbuffer_t *SND_CacheRetain (sfx_t *sfx);
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void SND_CacheRelease (sfx_t *sfx);
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sfxbuffer_t *SND_StreamRetain (sfx_t *sfx);
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void SND_StreamRelease (sfx_t *sfx);
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void SND_StreamAdvance (sfxbuffer_t *buffer, unsigned int count);
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void SND_StreamSetPos (sfxbuffer_t *buffer, unsigned int pos);
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void SND_WriteLinearBlastStereo16 (void);
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void SND_PaintChannelFrom8 (channel_t *ch, sfxbuffer_t *sc, int count);
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void SND_PaintChannelFrom16 (channel_t *ch, sfxbuffer_t *sc, int count);
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void SND_PaintChannelStereo8 (channel_t *ch, sfxbuffer_t *sc, int count);
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void SND_PaintChannelStereo16 (channel_t *ch, sfxbuffer_t *sc, int count);
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extern volatile dma_t *shm;
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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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#endif//__snd_render_h
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