mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-21 02:45:52 +01:00
6a0fd32833
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@367 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/*
|
|
* libacm - Interplay ACM audio decoder.
|
|
*
|
|
* Copyright (c) 2004-2008, Marko Kreen
|
|
* Copyright (c) 2008, Adam Gashlin
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __LIBACM_H
|
|
#define __LIBACM_H
|
|
|
|
#include "../streamfile.h"
|
|
|
|
#define LIBACM_VERSION "1.0-svn"
|
|
|
|
#define ACM_ID 0x032897
|
|
#define ACM_WORD 2
|
|
|
|
#define ACM_HEADER_LEN 14
|
|
#define ACM_OK 0
|
|
#define ACM_ERR_OTHER -1
|
|
#define ACM_ERR_OPEN -2
|
|
#define ACM_ERR_NOT_ACM -3
|
|
#define ACM_ERR_READ_ERR -4
|
|
#define ACM_ERR_BADFMT -5
|
|
#define ACM_ERR_CORRUPT -6
|
|
#define ACM_ERR_UNEXPECTED_EOF -7
|
|
#define ACM_ERR_NOT_SEEKABLE -8
|
|
|
|
typedef struct ACMInfo {
|
|
unsigned channels;
|
|
unsigned rate;
|
|
unsigned acm_id;
|
|
unsigned acm_version;
|
|
unsigned acm_level;
|
|
unsigned acm_cols; /* 1 << acm_level */
|
|
unsigned acm_rows;
|
|
} ACMInfo;
|
|
|
|
struct ACMStream {
|
|
ACMInfo info;
|
|
unsigned total_values;
|
|
|
|
/* acm data stream */
|
|
STREAMFILE *streamfile;
|
|
unsigned data_len;
|
|
|
|
/* acm stream buffer */
|
|
unsigned bit_avail;
|
|
unsigned bit_data;
|
|
unsigned buf_start_ofs;
|
|
|
|
/* block lengths (in samples) */
|
|
unsigned block_len;
|
|
unsigned wrapbuf_len;
|
|
/* buffers */
|
|
int *block;
|
|
int *wrapbuf;
|
|
int *ampbuf;
|
|
int *midbuf; /* pointer into ampbuf */
|
|
/* result */
|
|
unsigned block_ready:1;
|
|
unsigned file_eof:1;
|
|
unsigned stream_pos; /* in words. absolute */
|
|
unsigned block_pos; /* in words, relative */
|
|
};
|
|
typedef struct ACMStream ACMStream;
|
|
|
|
/* decode.c */
|
|
int acm_open_decoder(ACMStream **res, STREAMFILE *facilitator_file, const char *const filename);
|
|
int acm_read(ACMStream *acm, void *buf, unsigned nbytes,
|
|
int bigendianp, int wordlen, int sgned);
|
|
void acm_close(ACMStream *acm);
|
|
void acm_reset(ACMStream *acm);
|
|
|
|
#endif
|