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/*================================================================
* sffile.h
* SoundFont file (SBK/SF2) format defintions
*
* Copyright (C) 1996-1999 Takashi Iwai
*
* 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 the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*================================================================*/
#ifndef SFFILE_H_DEF
#define SFFILE_H_DEF
#include <stdio.h>
#include "itypes.h"
/* chunk record header */
typedef struct _SFChunk {
char id[4];
int32 size;
} SFChunk;
/* generator record */
typedef struct _SFGenRec {
int16 oper;
int16 amount;
} SFGenRec;
/* layered generators record */
typedef struct _SFGenLayer {
int nlists;
SFGenRec *list;
} SFGenLayer;
/* header record */
typedef struct _SFHeader {
char name[20];
uint16 bagNdx;
/* layered stuff */
int nlayers;
SFGenLayer *layer;
} SFHeader;
/* preset header record */
typedef struct _SFPresetHdr {
SFHeader hdr;
uint16 preset, bank;
/*int32 lib, genre, morphology;*/ /* not used */
} SFPresetHdr;
/* instrument header record */
typedef struct _SFInstHdr {
SFHeader hdr;
} SFInstHdr;
/* sample info record */
typedef struct _SFSampleInfo {
char name[20];
int32 startsample, endsample;
int32 startloop, endloop;
/* ver.2 additional info */
int32 samplerate;
byte originalPitch;
sbyte pitchCorrection;
uint16 samplelink;
uint16 sampletype; /*1=mono, 2=right, 4=left, 8=linked, $8000=ROM*/
/* optional info */
int32 size; /* sample size */
int32 loopshot; /* short-shot loop size */
} SFSampleInfo;
/*----------------------------------------------------------------
* soundfont file info record
*----------------------------------------------------------------*/
typedef struct _SFInfo {
/* file name */
char *sf_name;
/* version of this file */
int16 version, minorversion;
/* sample position (from origin) & total size (in bytes) */
long samplepos;
int32 samplesize;
/* raw INFO chunk list */
long infopos, infosize;
/* preset headers */
int npresets;
SFPresetHdr *preset;
/* sample infos */
int nsamples;
SFSampleInfo *sample;
/* instrument headers */
int ninsts;
SFInstHdr *inst;
} SFInfo;
/*----------------------------------------------------------------
* functions
*----------------------------------------------------------------*/
/* sffile.c */
int awe_load_soundfont(SFInfo *sf, FILE *fp, int is_seekable);
void awe_free_soundfont(SFInfo *sf);
void awe_save_soundfont(SFInfo *sf, FILE *fin, FILE *fout);
void awe_load_textinfo(SFInfo *sf, FILE *fp);
/* sample.c */
void awe_correct_samples(SFInfo *sf);
#endif
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