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Diffstat (limited to 'sound/oss/dm.h')
| -rw-r--r-- | sound/oss/dm.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/sound/oss/dm.h b/sound/oss/dm.h new file mode 100644 index 00000000000..14a90593c44 --- /dev/null +++ b/sound/oss/dm.h @@ -0,0 +1,79 @@ +#ifndef _DRIVERS_SOUND_DM_H +#define _DRIVERS_SOUND_DM_H + +/* + * Definitions of the 'direct midi sound' interface used + * by the newer commercial OSS package. We should export + * this to userland somewhere in glibc later. + */ + +/* + * Data structure composing an FM "note" or sound event. + */ + +struct dm_fm_voice +{ + u8 op; + u8 voice; + u8 am; + u8 vibrato; + u8 do_sustain; + u8 kbd_scale; + u8 harmonic; + u8 scale_level; + u8 volume; + u8 attack; + u8 decay; + u8 sustain; + u8 release; + u8 feedback; + u8 connection; + u8 left; + u8 right; + u8 waveform; +}; + +/* + * This describes an FM note by its voice, octave, frequency number (10bit) + * and key on/off. + */ + +struct dm_fm_note +{ + u8 voice; + u8 octave; + u32 fnum; + u8 key_on; +}; + +/* + * FM parameters that apply globally to all voices, and thus are not "notes" + */ + +struct dm_fm_params +{ + u8 am_depth; + u8 vib_depth; + u8 kbd_split; + u8 rhythm; + + /* This block is the percussion instrument data */ + u8 bass; + u8 snare; + u8 tomtom; + u8 cymbal; + u8 hihat; +}; + +/* + * FM mode ioctl settings + */ + +#define FM_IOCTL_RESET 0x20 +#define FM_IOCTL_PLAY_NOTE 0x21 +#define FM_IOCTL_SET_VOICE 0x22 +#define FM_IOCTL_SET_PARAMS 0x23 +#define FM_IOCTL_SET_MODE 0x24 +#define FM_IOCTL_SET_OPL 0x25 + +#endif |