quakeforge/include/snd_render.h

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/*
snd_render.h
Sound renderer plugin stuff
Copyright (C) 2002 Bill Currie
Author: Bill Currie <bill@taniwha.org>
Date: Jan 31 2003
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#ifndef __snd_render_h
#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 !!!
typedef struct portable_samplepair_s {
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int left;
int right;
} portable_samplepair_t;
typedef struct wavinfo_s {
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unsigned int rate;
unsigned int width;
unsigned int channels;
unsigned int loopstart;
unsigned int samples;
unsigned int dataofs; // chunk starts this many bytes from file start
unsigned int datalen; // chunk bytes
} wavinfo_t;
typedef struct channel_s channel_t;
typedef struct sfxbuffer_s sfxbuffer_t;
struct sfxbuffer_s {
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unsigned int head; // ring buffer head position in sampels
unsigned int tail; // ring buffer tail position in sampels
unsigned int length; // length of buffer in samples
unsigned int pos; // position of tail within full stream
unsigned int bps; // bytes per sample: 1 2 4 usually
void (*paint) (channel_t *ch, sfxbuffer_t *buffer, int count);
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void (*advance) (sfxbuffer_t *buffer, unsigned int count);
void (*setpos) (sfxbuffer_t *buffer, unsigned int pos);
sfx_t *sfx;
byte data[4];
};
typedef struct sfxstream_s {
sfx_t *sfx;
void *file;
wavinfo_t wavinfo;
int pos;
void (*resample)(sfxbuffer_t *, byte *, int, void *);
int (*read)(void *file, byte *data, int bytes, wavinfo_t *info);
int (*seek)(void *file, int pos, wavinfo_t *info);
sfxbuffer_t buffer;
} sfxstream_t;
typedef struct sfxblock_s {
sfx_t *sfx;
void *file;
wavinfo_t wavinfo;
cache_user_t cache;
} sfxblock_t;
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// !!! if this is changed, it much be changed in asm_i386.h too !!!
struct channel_s {
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sfx_t *sfx; // sfx number
int leftvol; // 0-255 volume
int rightvol; // 0-255 volume
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unsigned int end; // end time in global paintsamples
unsigned int pos; // sample position in sfx
unsigned int looping; // where to loop, -1 = no looping
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int entnum; // to allow overriding a specific sound
int entchannel; //
vec3_t origin; // origin of sound effect
vec_t dist_mult; // distance multiplier (attenuation/clipK)
int master_vol; // 0-255 master volume
int phase; // phase shift between l-r in samples
int oldphase; // phase shift between l-r in samples
};
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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);
void SND_ResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev);
void SND_NoResampleStereo (sfxbuffer_t *sc, byte *data, int length, void *prev);
sfxbuffer_t *SND_GetCache (long samples, int rate, int inwidth, int channels,
sfxblock_t *block, cache_allocator_t allocator);
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void SND_InitScaletable (void);
void SND_Load (sfx_t *sfx);
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void SND_CallbackLoad (void *object, cache_allocator_t allocator);
void SND_LoadOgg (QFile *file, sfx_t *sfx, char *realname);
void SND_LoadWav (QFile *file, sfx_t *sfx, char *realname);
void SND_LoadMidi (QFile *file, sfx_t *sfx, char *realname);
wavinfo_t *SND_CacheWavinfo (sfx_t *sfx);
wavinfo_t *SND_StreamWavinfo (sfx_t *sfx);
sfxbuffer_t *SND_CacheTouch (sfx_t *sfx);
sfxbuffer_t *SND_CacheRetain (sfx_t *sfx);
void SND_CacheRelease (sfx_t *sfx);
sfxbuffer_t *SND_StreamRetain (sfx_t *sfx);
void SND_StreamRelease (sfx_t *sfx);
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void SND_StreamAdvance (sfxbuffer_t *buffer, unsigned int count);
void SND_StreamSetPos (sfxbuffer_t *buffer, unsigned int pos);
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void SND_WriteLinearBlastStereo16 (void);
void SND_PaintChannelFrom8 (channel_t *ch, sfxbuffer_t *sc, int count);
void SND_PaintChannelFrom16 (channel_t *ch, sfxbuffer_t *sc, int count);
void SND_PaintChannelStereo8 (channel_t *ch, sfxbuffer_t *sc, int count);
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];
// 0 to MAX_DYNAMIC_CHANNELS-1 = normal entity sounds
// MAX_DYNAMIC_CHANNELS to MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS -1 = water, etc
// MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS to total_channels = static sounds
extern int total_channels;
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#endif//__snd_render_h