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/*
* Advanced Linux Sound Architecture
*
* Simple (MOD player) 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_SIMPLE_H
#define __SOUND_AINSTR_SIMPLE_H
#ifndef __KERNEL__
#include <asm/types.h>
#include <asm/byteorder.h>
#endif
/*
* share types (share ID 1)
*/
#define SIMPLE_SHARE_FILE 0
/*
* wave formats
*/
#define SIMPLE_WAVE_16BIT 0x0001 /* 16-bit wave */
#define SIMPLE_WAVE_UNSIGNED 0x0002 /* unsigned wave */
#define SIMPLE_WAVE_INVERT 0x0002 /* same as unsigned wave */
#define SIMPLE_WAVE_BACKWARD 0x0004 /* backward mode (maybe used for reverb or ping-ping loop) */
#define SIMPLE_WAVE_LOOP 0x0008 /* loop mode */
#define SIMPLE_WAVE_BIDIR 0x0010 /* bidirectional mode */
#define SIMPLE_WAVE_STEREO 0x0100 /* stereo wave */
#define SIMPLE_WAVE_ULAW 0x0200 /* uLaw compression mode */
/*
* instrument effects
*/
#define SIMPLE_EFFECT_NONE 0
#define SIMPLE_EFFECT_REVERB 1
#define SIMPLE_EFFECT_CHORUS 2
#define SIMPLE_EFFECT_ECHO 3
/*
* instrument info
*/
struct simple_instrument_info {
unsigned int format; /* supported format bits */
unsigned int effects; /* supported effects (1 << SIMPLE_EFFECT_*) */
unsigned int max8_len; /* maximum 8-bit wave length */
unsigned int max16_len; /* maximum 16-bit wave length */
};
/*
* Instrument
*/
struct simple_instrument {
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; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
unsigned int loop_end; /* loop end offset in samples * 16 (lowest 4 bits - fraction) */
unsigned short loop_repeat; /* loop repeat - 0 = forever */
unsigned char effect1; /* effect 1 */
unsigned char effect1_depth; /* 0-127 */
unsigned char effect2; /* effect 2 */
unsigned char effect2_depth; /* 0-127 */
};
/*
*
* Kernel <-> user space
* Hardware (CPU) independent section
*
* * = zero or more
* + = one or more
*
* simple_xinstrument SIMPLE_STRU_INSTR
*
*/
#define SIMPLE_STRU_INSTR __cpu_to_be32(('I'<<24)|('N'<<16)|('S'<<8)|'T')
/*
* Instrument
*/
struct simple_xinstrument {
__u32 stype;
__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 effect1; /* effect 1 */
__u8 effect1_depth; /* 0-127 */
__u8 effect2; /* effect 2 */
__u8 effect2_depth; /* 0-127 */
};
#ifdef __KERNEL__
#include "seq_instr.h"
struct snd_simple_ops {
void *private_data;
int (*info)(void *private_data, struct simple_instrument_info *info);
int (*put_sample)(void *private_data, struct simple_instrument *instr,
char __user *data, long len, int atomic);
int (*get_sample)(void *private_data, struct simple_instrument *instr,
char __user *data, long len, int atomic);
int (*remove_sample)(void *private_data, struct simple_instrument *instr,
int atomic);
void (*notify)(void *private_data, struct snd_seq_kinstr *instr, int what);
struct snd_seq_kinstr_ops kops;
};
int snd_seq_simple_init(struct snd_simple_ops *ops,
void *private_data,
struct snd_seq_kinstr_ops *next);
#endif
/* typedefs for compatibility to user-space */
typedef struct simple_xinstrument simple_xinstrument_t;
#endif /* __SOUND_AINSTR_SIMPLE_H */
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