quakeforge/include/QF/riff.h

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/*
riff.h
riff wav file handling
Copyright (C) 2003 Bill Currie
Author: Bill Currie <bill@taniwha.org>
Date: 2003/4/10
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
*/
#ifndef __QF_riff_h
#define __QF_riff_h
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#include <stdint.h>
#include <sys/types.h>
#include "QF/quakeio.h"
typedef struct riff_d_chunk_s {
char name[4];
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uint32_t len;
} riff_d_chunk_t;
typedef struct riff_d_cue_point_s {
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uint32_t name;
uint32_t position;
char chunk[4];
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uint32_t chunk_start;
uint32_t block_start;
uint32_t sample_offset;
} riff_d_cue_point_t;
typedef struct riff_d_cue_s {
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uint32_t count;
riff_d_cue_point_t cue_points[1];
} riff_d_cue_t;
typedef struct riff_d_format_s {
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uint16_t format_tag;
uint16_t channels;
uint32_t samples_per_sec;
uint32_t bytes_per_sec;
uint16_t align;
uint16_t bits_per_sample; // only if format_tag == 1
} riff_d_format_t;
typedef struct riff_d_ltxt_s {
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uint32_t name;
uint32_t len;
char purpose[4];
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uint32_t country;
uint32_t language;
uint32_t dialect;
uint32_t codepage;
unsigned char data[0];
} riff_d_ltxt_t;
typedef struct riff_cue_s {
riff_d_chunk_t ck;
riff_d_cue_t *cue;
} riff_cue_t;
typedef struct riff_format_s {
riff_d_chunk_t ck;
riff_d_format_t format;
char fdata[0];
} riff_format_t;
typedef struct riff_ltxt_s {
riff_d_chunk_t ck;
riff_d_ltxt_t ltxt;
} riff_ltxt_t;
typedef struct riff_label_s {
riff_d_chunk_t ck;
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off_t ofs;
char *label;
} riff_label_t;
typedef struct riff_data_s {
riff_d_chunk_t ck;
char *data;
} riff_data_t;
typedef struct riff_list_s {
riff_d_chunk_t ck;
char name[4];
riff_d_chunk_t *chunks[0];
} riff_list_t;
typedef riff_list_t riff_t; // a riff file is one huge list chunk
#define RIFF_SWITCH(name) switch ((((unsigned char) (name)[0]) << 24) \
| (((unsigned char) (name)[1]) << 16) \
| (((unsigned char) (name)[2]) << 8) \
| ((unsigned char) (name)[3]))
#define RIFF_CASE(a,b,c,d) (((unsigned char)(a) << 24) \
| ((unsigned char)(b) << 16) \
| ((unsigned char)(c) << 8) \
| (unsigned char)(d))
riff_t *riff_read (QFile *file);
void riff_free (riff_t *riff);
#endif//__QF_riff_h