80 строки
1.2 KiB
C
80 строки
1.2 KiB
C
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#ifndef _DRIVERS_SOUND_DM_H
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#define _DRIVERS_SOUND_DM_H
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/*
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* Definitions of the 'direct midi sound' interface used
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* by the newer commercial OSS package. We should export
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* this to userland somewhere in glibc later.
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*/
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/*
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* Data structure composing an FM "note" or sound event.
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*/
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struct dm_fm_voice
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{
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u8 op;
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u8 voice;
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u8 am;
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u8 vibrato;
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u8 do_sustain;
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u8 kbd_scale;
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u8 harmonic;
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u8 scale_level;
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u8 volume;
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u8 attack;
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u8 decay;
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u8 sustain;
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u8 release;
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u8 feedback;
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u8 connection;
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u8 left;
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u8 right;
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u8 waveform;
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};
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/*
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* This describes an FM note by its voice, octave, frequency number (10bit)
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* and key on/off.
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*/
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struct dm_fm_note
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{
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u8 voice;
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u8 octave;
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u32 fnum;
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u8 key_on;
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};
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/*
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* FM parameters that apply globally to all voices, and thus are not "notes"
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*/
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struct dm_fm_params
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{
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u8 am_depth;
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u8 vib_depth;
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u8 kbd_split;
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u8 rhythm;
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/* This block is the percussion instrument data */
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u8 bass;
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u8 snare;
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u8 tomtom;
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u8 cymbal;
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u8 hihat;
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};
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/*
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* FM mode ioctl settings
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*/
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#define FM_IOCTL_RESET 0x20
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#define FM_IOCTL_PLAY_NOTE 0x21
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#define FM_IOCTL_SET_VOICE 0x22
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#define FM_IOCTL_SET_PARAMS 0x23
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#define FM_IOCTL_SET_MODE 0x24
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#define FM_IOCTL_SET_OPL 0x25
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#endif
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