snd_codec.h

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2005 Stuart Dalton (badcdev@gmail.com)
 
This file is part of Quake III Arena source code.
 
Quake III Arena source code 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.
 
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
 
#ifndef _SND_CODEC_H_
#define _SND_CODEC_H_
 
#include "../qcommon/q_shared.h"
#include "../qcommon/qcommon.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct snd_info_s
{
    int rate;
    float width;
    int channels;
    int samples;
    int size;
    int dataofs;
    int dataalign;
} snd_info_t;
 
typedef struct snd_codec_s snd_codec_t;
 
typedef struct snd_stream_s
{
    snd_codec_t *codec;
    fileHandle_t file;
    snd_info_t info;
    int length;
    int pos;
    void *ptr;
} snd_stream_t;
 
// Codec functions
typedef void *(*CODEC_LOAD)(const char *filename, snd_info_t *info);
typedef snd_stream_t *(*CODEC_OPEN)(const char *filename);
typedef int (*CODEC_READ)(snd_stream_t *stream, int bytes, void *buffer);
typedef void (*CODEC_CLOSE)(snd_stream_t *stream);
 
// Codec data structure
struct snd_codec_s
{
    char *ext;
    CODEC_LOAD load;
    CODEC_OPEN open;
    CODEC_READ read;
    CODEC_CLOSE close;
    snd_codec_t *next;
};
 
// Codec management
void S_CodecInit( void );
void S_CodecShutdown( void );
void S_CodecRegister(snd_codec_t *codec);
void *S_CodecLoad(const char *filename, snd_info_t *info);
snd_stream_t *S_CodecOpenStream(const char *filename);
void S_CodecCloseStream(snd_stream_t *stream);
int S_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer);
 
// Util functions (used by codecs)
snd_stream_t *S_CodecUtilOpen(const char *filename, snd_codec_t *codec);
void S_CodecUtilClose(snd_stream_t **stream);
 
// WAV Codec
extern snd_codec_t wav_codec;
void *S_WAV_CodecLoad(const char *filename, snd_info_t *info);
snd_stream_t *S_WAV_CodecOpenStream(const char *filename);
void S_WAV_CodecCloseStream(snd_stream_t *stream);
int S_WAV_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer);
 
// Ogg Vorbis codec
#ifdef USE_CODEC_VORBIS
extern snd_codec_t ogg_codec;
void *S_OGG_CodecLoad(const char *filename, snd_info_t *info);
snd_stream_t *S_OGG_CodecOpenStream(const char *filename);
void S_OGG_CodecCloseStream(snd_stream_t *stream);
int S_OGG_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer);
#endif // USE_CODEC_VORBIS
 
// MP3 codec
#ifdef USE_CODEC_MP3
extern snd_codec_t mp3_codec;
void* S_MP3_CodecLoad(const char* filename, snd_info_t * info);
snd_stream_t * S_MP3_CodecOpenStream(const char* filename);
void S_MP3_CodecCloseStream(snd_stream_t * stream);
int S_MP3_CodecReadStream(snd_stream_t * stream, int bytes, void* buffer);
#endif // USE_CODEC_MP3
 
// Ogg Opus codec
#ifdef USE_CODEC_OPUS
extern snd_codec_t opus_codec;
void *S_OggOpus_CodecLoad(const char *filename, snd_info_t *info);
snd_stream_t *S_OggOpus_CodecOpenStream(const char *filename);
void S_OggOpus_CodecCloseStream(snd_stream_t *stream);
int S_OggOpus_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer);
#endif // USE_CODEC_OPUS
 
#ifdef __cplusplus
}
#endif
 
#endif // !_SND_CODEC_H_