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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 */