linux/include/sound/asound_fm.h
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   1#ifndef __SOUND_ASOUND_FM_H
   2#define __SOUND_ASOUND_FM_H
   3
   4/*
   5 *  Advanced Linux Sound Architecture - ALSA
   6 *
   7 *  Interface file between ALSA driver & user space
   8 *  Copyright (c) 1994-98 by Jaroslav Kysela <perex@perex.cz>,
   9 *                           4Front Technologies
  10 *
  11 *  Direct FM control
  12 *
  13 *   This program is free software; you can redistribute it and/or modify
  14 *   it under the terms of the GNU General Public License as published by
  15 *   the Free Software Foundation; either version 2 of the License, or
  16 *   (at your option) any later version.
  17 *
  18 *   This program is distributed in the hope that it will be useful,
  19 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 *   GNU General Public License for more details.
  22 *
  23 *   You should have received a copy of the GNU General Public License
  24 *   along with this program; if not, write to the Free Software
  25 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  26 *
  27 */
  28
  29#define SNDRV_DM_FM_MODE_OPL2   0x00
  30#define SNDRV_DM_FM_MODE_OPL3   0x01
  31
  32struct snd_dm_fm_info {
  33        unsigned char fm_mode;          /* OPL mode, see SNDRV_DM_FM_MODE_XXX */
  34        unsigned char rhythm;           /* percussion mode flag */
  35};
  36
  37/*
  38 *  Data structure composing an FM "note" or sound event.
  39 */
  40
  41struct snd_dm_fm_voice {
  42        unsigned char op;               /* operator cell (0 or 1) */
  43        unsigned char voice;            /* FM voice (0 to 17) */
  44
  45        unsigned char am;               /* amplitude modulation */
  46        unsigned char vibrato;          /* vibrato effect */
  47        unsigned char do_sustain;       /* sustain phase */
  48        unsigned char kbd_scale;        /* keyboard scaling */
  49        unsigned char harmonic;         /* 4 bits: harmonic and multiplier */
  50        unsigned char scale_level;      /* 2 bits: decrease output freq rises */
  51        unsigned char volume;           /* 6 bits: volume */
  52
  53        unsigned char attack;           /* 4 bits: attack rate */
  54        unsigned char decay;            /* 4 bits: decay rate */
  55        unsigned char sustain;          /* 4 bits: sustain level */
  56        unsigned char release;          /* 4 bits: release rate */
  57
  58        unsigned char feedback;         /* 3 bits: feedback for op0 */
  59        unsigned char connection;       /* 0 for serial, 1 for parallel */
  60        unsigned char left;             /* stereo left */
  61        unsigned char right;            /* stereo right */
  62        unsigned char waveform;         /* 3 bits: waveform shape */
  63};
  64
  65/*
  66 *  This describes an FM note by its voice, octave, frequency number (10bit)
  67 *  and key on/off.
  68 */
  69
  70struct snd_dm_fm_note {
  71        unsigned char voice;    /* 0-17 voice channel */
  72        unsigned char octave;   /* 3 bits: what octave to play */
  73        unsigned int fnum;      /* 10 bits: frequency number */
  74        unsigned char key_on;   /* set for active, clear for silent */
  75};
  76
  77/*
  78 *  FM parameters that apply globally to all voices, and thus are not "notes"
  79 */
  80
  81struct snd_dm_fm_params {
  82        unsigned char am_depth;         /* amplitude modulation depth (1=hi) */
  83        unsigned char vib_depth;        /* vibrato depth (1=hi) */
  84        unsigned char kbd_split;        /* keyboard split */
  85        unsigned char rhythm;           /* percussion mode select */
  86
  87        /* This block is the percussion instrument data */
  88        unsigned char bass;
  89        unsigned char snare;
  90        unsigned char tomtom;
  91        unsigned char cymbal;
  92        unsigned char hihat;
  93};
  94
  95/*
  96 *  FM mode ioctl settings
  97 */
  98
  99#define SNDRV_DM_FM_IOCTL_INFO          _IOR('H', 0x20, struct snd_dm_fm_info)
 100#define SNDRV_DM_FM_IOCTL_RESET         _IO ('H', 0x21)
 101#define SNDRV_DM_FM_IOCTL_PLAY_NOTE     _IOW('H', 0x22, struct snd_dm_fm_note)
 102#define SNDRV_DM_FM_IOCTL_SET_VOICE     _IOW('H', 0x23, struct snd_dm_fm_voice)
 103#define SNDRV_DM_FM_IOCTL_SET_PARAMS    _IOW('H', 0x24, struct snd_dm_fm_params)
 104#define SNDRV_DM_FM_IOCTL_SET_MODE      _IOW('H', 0x25, int)
 105/* for OPL3 only */
 106#define SNDRV_DM_FM_IOCTL_SET_CONNECTION        _IOW('H', 0x26, int)
 107/* SBI patch management */
 108#define SNDRV_DM_FM_IOCTL_CLEAR_PATCHES _IO ('H', 0x40)
 109
 110#define SNDRV_DM_FM_OSS_IOCTL_RESET             0x20
 111#define SNDRV_DM_FM_OSS_IOCTL_PLAY_NOTE         0x21
 112#define SNDRV_DM_FM_OSS_IOCTL_SET_VOICE         0x22
 113#define SNDRV_DM_FM_OSS_IOCTL_SET_PARAMS        0x23
 114#define SNDRV_DM_FM_OSS_IOCTL_SET_MODE          0x24
 115#define SNDRV_DM_FM_OSS_IOCTL_SET_OPL           0x25
 116
 117/*
 118 * Patch Record - fixed size for write
 119 */
 120
 121#define FM_KEY_SBI      "SBI\032"
 122#define FM_KEY_2OP      "2OP\032"
 123#define FM_KEY_4OP      "4OP\032"
 124
 125struct sbi_patch {
 126        unsigned char prog;
 127        unsigned char bank;
 128        char key[4];
 129        char name[25];
 130        char extension[7];
 131        unsigned char data[32];
 132};
 133
 134#endif /* __SOUND_ASOUND_FM_H */
 135
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