include/sound/ainstr_simple.h

   1 /*
   2  *  Advanced Linux Sound Architecture
   3  *
   4  *  Simple (MOD player) Instrument Format
   5  *  Copyright (c) 1994-99 by Jaroslav Kysela <perex@perex.cz>
   6  *
   7  *
   8  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23
  24 #ifndef __SOUND_AINSTR_SIMPLE_H
  25 #define __SOUND_AINSTR_SIMPLE_H
  26
  27 #ifndef __KERNEL__
  28 #include <asm/types.h>
  29 #include <asm/byteorder.h>
  30 #endif
  31
  32 /*
  33  *  share types (share ID 1)
  34  */
  35
  36 #define SIMPLE_SHARE_FILE               0
  37
  38 /*
  39  *  wave formats
  40  */
  41
  42 #define SIMPLE_WAVE_16BIT               0x0001  /* 16-bit wave */
  43 #define SIMPLE_WAVE_UNSIGNED            0x0002  /* unsigned wave */
  44 #define SIMPLE_WAVE_INVERT              0x0002  /* same as unsigned wave */
  45 #define SIMPLE_WAVE_BACKWARD            0x0004  /* backward mode (maybe used for reverb or ping-ping loop) */
  46 #define SIMPLE_WAVE_LOOP                0x0008  /* loop mode */
  47 #define SIMPLE_WAVE_BIDIR               0x0010  /* bidirectional mode */
  48 #define SIMPLE_WAVE_STEREO              0x0100  /* stereo wave */
  49 #define SIMPLE_WAVE_ULAW                0x0200  /* uLaw compression mode */
  50
  51 /*
  52  *  instrument effects
  53  */
  54
  55 #define SIMPLE_EFFECT_NONE              0
  56 #define SIMPLE_EFFECT_REVERB            1
  57 #define SIMPLE_EFFECT_CHORUS            2
  58 #define SIMPLE_EFFECT_ECHO              3
  59
  60 /*
  61  *  instrument info
  62  */
  63
  64 struct simple_instrument_info {
  65         unsigned int format;            /* supported format bits */
  66         unsigned int effects;           /* supported effects (1 << SIMPLE_EFFECT_*) */
  67         unsigned int max8_len;          /* maximum 8-bit wave length */
  68         unsigned int max16_len;         /* maximum 16-bit wave length */
  69 };
  70
  71 /*
  72  *  Instrument
  73  */
  74
  75 struct simple_instrument {
  76         unsigned int share_id[4];       /* share id - zero = no sharing */
  77         unsigned int format;            /* wave format */
  78
  79         struct {
  80                 unsigned int number;    /* some other ID for this instrument */
  81                 unsigned int memory;    /* begin of waveform in onboard memory */
  82                 unsigned char *ptr;     /* pointer to waveform in system memory */
  83         } address;
  84
  85         unsigned int size;              /* size of waveform in samples */
  86         unsigned int start;             /* start offset in samples * 16 (lowest 4 bits - fraction) */
  87         unsigned int loop_start;        /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
  88         unsigned int loop_end;          /* loop end offset in samples * 16 (lowest 4 bits - fraction) */
  89         unsigned short loop_repeat;     /* loop repeat - 0 = forever */
  90
  91         unsigned char effect1;          /* effect 1 */
  92         unsigned char effect1_depth;    /* 0-127 */
  93         unsigned char effect2;          /* effect 2 */
  94         unsigned char effect2_depth;    /* 0-127 */
  95 };
  96
  97 /*
  98  *
  99  *    Kernel <-> user space
 100  *    Hardware (CPU) independent section
 101  *
 102  *    * = zero or more
 103  *    + = one or more
 104  *
 105  *    simple_xinstrument        SIMPLE_STRU_INSTR
 106  *
 107  */
 108
 109 #define SIMPLE_STRU_INSTR       __cpu_to_be32(('I'<<24)|('N'<<16)|('S'<<8)|'T')
 110
 111 /*
 112  *  Instrument
 113  */
 114
 115 struct simple_xinstrument {
 116         __u32 stype;
 117
 118         __u32 share_id[4];              /* share id - zero = no sharing */
 119         __u32 format;                   /* wave format */
 120
 121         __u32 size;                     /* size of waveform in samples */
 122         __u32 start;                    /* start offset in samples * 16 (lowest 4 bits - fraction) */
 123         __u32 loop_start;               /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */
 124         __u32 loop_end;                 /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
 125         __u16 loop_repeat;              /* loop repeat - 0 = forever */
 126
 127         __u8 effect1;                   /* effect 1 */
 128         __u8 effect1_depth;             /* 0-127 */
 129         __u8 effect2;                   /* effect 2 */
 130         __u8 effect2_depth;             /* 0-127 */
 131 };
 132
 133 #ifdef __KERNEL__
 134
 135 #include "seq_instr.h"
 136
 137 struct snd_simple_ops {
 138         void *private_data;
 139         int (*info)(void *private_data, struct simple_instrument_info *info);
 140         int (*put_sample)(void *private_data, struct simple_instrument *instr,
 141                           char __user *data, long len, int atomic);
 142         int (*get_sample)(void *private_data, struct simple_instrument *instr,
 143                           char __user *data, long len, int atomic);
 144         int (*remove_sample)(void *private_data, struct simple_instrument *instr,
 145                              int atomic);
 146         void (*notify)(void *private_data, struct snd_seq_kinstr *instr, int what);
 147         struct snd_seq_kinstr_ops kops;
 148 };
 149
 150 int snd_seq_simple_init(struct snd_simple_ops *ops,
 151                         void *private_data,
 152                         struct snd_seq_kinstr_ops *next);
 153
 154 #endif
 155
 156 /* typedefs for compatibility to user-space */
 157 typedef struct simple_xinstrument simple_xinstrument_t;
 158
 159 #endif /* __SOUND_AINSTR_SIMPLE_H */