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 (at) 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 32 typedef struct 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 } snd_dm_fm_info_t; 36 37 /* 38 * Data structure composing an FM "note" or sound event. 39 */ 40 41 typedef struct 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 } snd_dm_fm_voice_t; 64 65 /* 66 * This describes an FM note by its voice, octave, frequency number (10bit) 67 * and key on/off. 68 */ 69 70 typedef struct 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 } snd_dm_fm_note_t; 76 77 /* 78 * FM parameters that apply globally to all voices, and thus are not "notes" 79 */ 80 81 typedef struct 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 } snd_dm_fm_params_t; 94 95 /* 96 * FM mode ioctl settings 97 */ 98 99 #define SNDRV_DM_FM_IOCTL_INFO _IOR('H', 0x20, snd_dm_fm_info_t) 100 #define SNDRV_DM_FM_IOCTL_RESET _IO ('H', 0x21) 101 #define SNDRV_DM_FM_IOCTL_PLAY_NOTE _IOW('H', 0x22, snd_dm_fm_note_t) 102 #define SNDRV_DM_FM_IOCTL_SET_VOICE _IOW('H', 0x23, snd_dm_fm_voice_t) 103 #define SNDRV_DM_FM_IOCTL_SET_PARAMS _IOW('H', 0x24, snd_dm_fm_params_t) 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) 107 108 #define SNDRV_DM_FM_OSS_IOCTL_RESET 0x20 109 #define SNDRV_DM_FM_OSS_IOCTL_PLAY_NOTE 0x21 110 #define SNDRV_DM_FM_OSS_IOCTL_SET_VOICE 0x22 111 #define SNDRV_DM_FM_OSS_IOCTL_SET_PARAMS 0x23 112 #define SNDRV_DM_FM_OSS_IOCTL_SET_MODE 0x24 113 #define SNDRV_DM_FM_OSS_IOCTL_SET_OPL 0x25 114 115 #endif /* __SOUND_ASOUND_FM_H */ 116
