/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_SEQ_MIDI_EMUL_H #define __SOUND_SEQ_MIDI_EMUL_H /* * Midi channel definition for optional channel management. * * Copyright (C) 1999 Steve Ratcliffe */ #include <sound/seq_kernel.h> /* * This structure is used to keep track of the current state on each * channel. All drivers for hardware that does not understand midi * directly will probably need to use this structure. */ struct snd_midi_channel { … }; /* * A structure that represets a set of channels bound to a port. There * would usually be 16 channels per port. But fewer could be used for * particular cases. * The channel set consists of information describing the client and * port for this midi synth and an array of snd_midi_channel structures. * A driver that had no need for snd_midi_channel could still use the * channel set type if it wished with the channel array null. */ struct snd_midi_channel_set { … }; struct snd_midi_op { … }; /* * These defines are used so that pitchbend, aftertouch etc, can be * distinguished from controller values. */ /* 0-127 controller values */ #define MIDI_CTL_PITCHBEND … #define MIDI_CTL_AFTERTOUCH … #define MIDI_CTL_CHAN_PRESSURE … /* * These names exist to allow symbolic access to the controls array. * The usage is eg: chan->gm_bank_select. Another implementation would * be really have these members in the struct, and not the array. */ #define gm_bank_select … #define gm_modulation … #define gm_breath … #define gm_foot_pedal … #define gm_portamento_time … #define gm_data_entry … #define gm_volume … #define gm_balance … #define gm_pan … #define gm_expression … #define gm_effect_control1 … #define gm_effect_control2 … #define gm_slider1 … #define gm_slider2 … #define gm_slider3 … #define gm_slider4 … #define gm_bank_select_lsb … #define gm_modulation_wheel_lsb … #define gm_breath_lsb … #define gm_foot_pedal_lsb … #define gm_portamento_time_lsb … #define gm_data_entry_lsb … #define gm_volume_lsb … #define gm_balance_lsb … #define gm_pan_lsb … #define gm_expression_lsb … #define gm_effect_control1_lsb … #define gm_effect_control2_lsb … #define gm_sustain … #define gm_hold … #define gm_portamento … #define gm_sostenuto … /* * These macros give the complete value of the controls that consist * of coarse and fine pairs. Of course the fine controls are seldom used * but there is no harm in being complete. */ #define SNDRV_GM_BANK_SELECT(cp) … #define SNDRV_GM_MODULATION_WHEEL(cp) … #define SNDRV_GM_BREATH(cp) … #define SNDRV_GM_FOOT_PEDAL(cp) … #define SNDRV_GM_PORTAMENTO_TIME(cp) … #define SNDRV_GM_DATA_ENTRY(cp) … #define SNDRV_GM_VOLUME(cp) … #define SNDRV_GM_BALANCE(cp) … #define SNDRV_GM_PAN(cp) … #define SNDRV_GM_EXPRESSION(cp) … /* MIDI mode */ #define SNDRV_MIDI_MODE_NONE … #define SNDRV_MIDI_MODE_GM … #define SNDRV_MIDI_MODE_GS … #define SNDRV_MIDI_MODE_XG … #define SNDRV_MIDI_MODE_MT32 … /* MIDI note state */ #define SNDRV_MIDI_NOTE_OFF … #define SNDRV_MIDI_NOTE_ON … #define SNDRV_MIDI_NOTE_RELEASED … #define SNDRV_MIDI_NOTE_SOSTENUTO … #define SNDRV_MIDI_PARAM_TYPE_REGISTERED … #define SNDRV_MIDI_PARAM_TYPE_NONREGISTERED … /* SYSEX parse flag */ enum { … }; /* Prototypes for midi_process.c */ void snd_midi_process_event(const struct snd_midi_op *ops, struct snd_seq_event *ev, struct snd_midi_channel_set *chanset); void snd_midi_channel_set_clear(struct snd_midi_channel_set *chset); struct snd_midi_channel_set *snd_midi_channel_alloc_set(int n); void snd_midi_channel_free_set(struct snd_midi_channel_set *chset); #endif /* __SOUND_SEQ_MIDI_EMUL_H */
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