/
ainstr_gf1.h
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/
ainstr_gf1.h
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/*
* Advanced Linux Sound Architecture
*
* GF1 (GUS) Patch Instrument Format
* Copyright (c) 1994-99 by Jaroslav Kysela <perex@perex.cz>
*
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __SOUND_AINSTR_GF1_H
#define __SOUND_AINSTR_GF1_H
#ifndef __KERNEL__
#include <asm/types.h>
#include <asm/byteorder.h>
#endif
/*
* share types (share ID 1)
*/
#define GF1_SHARE_FILE 0
/*
* wave formats
*/
#define GF1_WAVE_16BIT 0x0001 /* 16-bit wave */
#define GF1_WAVE_UNSIGNED 0x0002 /* unsigned wave */
#define GF1_WAVE_INVERT 0x0002 /* same as unsigned wave */
#define GF1_WAVE_BACKWARD 0x0004 /* backward mode (maybe used for reverb or ping-ping loop) */
#define GF1_WAVE_LOOP 0x0008 /* loop mode */
#define GF1_WAVE_BIDIR 0x0010 /* bidirectional mode */
#define GF1_WAVE_STEREO 0x0100 /* stereo mode */
#define GF1_WAVE_ULAW 0x0200 /* uLaw compression mode */
/*
* Wavetable definitions
*/
struct gf1_wave {
unsigned int share_id[4]; /* share id - zero = no sharing */
unsigned int format; /* wave format */
struct {
unsigned int number; /* some other ID for this instrument */
unsigned int memory; /* begin of waveform in onboard memory */
unsigned char *ptr; /* pointer to waveform in system memory */
} address;
unsigned int size; /* size of waveform in samples */
unsigned int start; /* start offset in samples * 16 (lowest 4 bits - fraction) */
unsigned int loop_start; /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */
unsigned int loop_end; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
unsigned short loop_repeat; /* loop repeat - 0 = forever */
unsigned char flags; /* GF1 patch flags */
unsigned char pad;
unsigned int sample_rate; /* sample rate in Hz */
unsigned int low_frequency; /* low frequency range */
unsigned int high_frequency; /* high frequency range */
unsigned int root_frequency; /* root frequency range */
signed short tune;
unsigned char balance;
unsigned char envelope_rate[6];
unsigned char envelope_offset[6];
unsigned char tremolo_sweep;
unsigned char tremolo_rate;
unsigned char tremolo_depth;
unsigned char vibrato_sweep;
unsigned char vibrato_rate;
unsigned char vibrato_depth;
unsigned short scale_frequency;
unsigned short scale_factor; /* 0-2048 or 0-2 */
struct gf1_wave *next;
};
/*
* Instrument
*/
#define IWFFFF_EXCLUDE_NONE 0x0000 /* exclusion mode - none */
#define IWFFFF_EXCLUDE_SINGLE 0x0001 /* exclude single - single note from the instrument group */
#define IWFFFF_EXCLUDE_MULTIPLE 0x0002 /* exclude multiple - stop only same note from this instrument */
#define IWFFFF_EFFECT_NONE 0
#define IWFFFF_EFFECT_REVERB 1
#define IWFFFF_EFFECT_CHORUS 2
#define IWFFFF_EFFECT_ECHO 3
struct gf1_instrument {
unsigned short exclusion;
unsigned short exclusion_group; /* 0 - none, 1-65535 */
unsigned char effect1; /* effect 1 */
unsigned char effect1_depth; /* 0-127 */
unsigned char effect2; /* effect 2 */
unsigned char effect2_depth; /* 0-127 */
struct gf1_wave *wave; /* first waveform */
};
/*
*
* Kernel <-> user space
* Hardware (CPU) independent section
*
* * = zero or more
* + = one or more
*
* gf1_xinstrument IWFFFF_STRU_INSTR
* +gf1_xwave IWFFFF_STRU_WAVE
*
*/
#define GF1_STRU_WAVE __cpu_to_be32(('W'<<24)|('A'<<16)|('V'<<8)|'E')
#define GF1_STRU_INSTR __cpu_to_be32(('I'<<24)|('N'<<16)|('S'<<8)|'T')
/*
* Wavetable definitions
*/
struct gf1_xwave {
__u32 stype; /* structure type */
__u32 share_id[4]; /* share id - zero = no sharing */
__u32 format; /* wave format */
__u32 size; /* size of waveform in samples */
__u32 start; /* start offset in samples * 16 (lowest 4 bits - fraction) */
__u32 loop_start; /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */
__u32 loop_end; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
__u16 loop_repeat; /* loop repeat - 0 = forever */
__u8 flags; /* GF1 patch flags */
__u8 pad;
__u32 sample_rate; /* sample rate in Hz */
__u32 low_frequency; /* low frequency range */
__u32 high_frequency; /* high frequency range */
__u32 root_frequency; /* root frequency range */
__s16 tune;
__u8 balance;
__u8 envelope_rate[6];
__u8 envelope_offset[6];
__u8 tremolo_sweep;
__u8 tremolo_rate;
__u8 tremolo_depth;
__u8 vibrato_sweep;
__u8 vibrato_rate;
__u8 vibrato_depth;
__u16 scale_frequency;
__u16 scale_factor; /* 0-2048 or 0-2 */
};
/*
* Instrument
*/
struct gf1_xinstrument {
__u32 stype;
__u16 exclusion;
__u16 exclusion_group; /* 0 - none, 1-65535 */
__u8 effect1; /* effect 1 */
__u8 effect1_depth; /* 0-127 */
__u8 effect2; /* effect 2 */
__u8 effect2_depth; /* 0-127 */
};
/*
* Instrument info
*/
#define GF1_INFO_ENVELOPE (1<<0)
#define GF1_INFO_TREMOLO (1<<1)
#define GF1_INFO_VIBRATO (1<<2)
struct gf1_info {
unsigned char flags; /* supported wave flags */
unsigned char pad[3];
unsigned int features; /* supported features */
unsigned int max8_len; /* maximum 8-bit wave length */
unsigned int max16_len; /* maximum 16-bit wave length */
};
#ifdef __KERNEL__
#include "seq_instr.h"
struct snd_gf1_ops {
void *private_data;
int (*info)(void *private_data, struct gf1_info *info);
int (*put_sample)(void *private_data, struct gf1_wave *wave,
char __user *data, long len, int atomic);
int (*get_sample)(void *private_data, struct gf1_wave *wave,
char __user *data, long len, int atomic);
int (*remove_sample)(void *private_data, struct gf1_wave *wave,
int atomic);
void (*notify)(void *private_data, struct snd_seq_kinstr *instr, int what);
struct snd_seq_kinstr_ops kops;
};
int snd_seq_gf1_init(struct snd_gf1_ops *ops,
void *private_data,
struct snd_seq_kinstr_ops *next);
#endif
/* typedefs for compatibility to user-space */
typedef struct gf1_xwave gf1_xwave_t;
typedef struct gf1_xinstrument gf1_xinstrument_t;
#endif /* __SOUND_AINSTR_GF1_H */