159 lines
4.7 KiB
C
159 lines
4.7 KiB
C
/*
|
|
* 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 */
|