From 242b80c63ffff022172755da35fb4767d5f837c2 Mon Sep 17 00:00:00 2001 From: Ryan Date: Mon, 30 Jan 2023 18:47:50 +1100 Subject: Move MIDI code out of tmk_core (#19704) --- quantum/midi/midi.c | 247 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 quantum/midi/midi.c (limited to 'quantum/midi/midi.c') diff --git a/quantum/midi/midi.c b/quantum/midi/midi.c new file mode 100644 index 0000000000..1ba3e73a40 --- /dev/null +++ b/quantum/midi/midi.c @@ -0,0 +1,247 @@ +// midi for embedded chips, +// Copyright 2010 Alex Norman +// +// This file is part of avr-midi. +// +// avr-midi is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +//(at your option) any later version. +// +// avr-midi is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with avr-midi. If not, see . + +#include "midi.h" +#include //for memcpy + +#ifndef MIN +# define MIN(x, y) (((x) < (y)) ? (x) : (y)) +#endif + +#ifndef NULL +# define NULL 0 +#endif + +bool midi_is_statusbyte(uint8_t theByte) { + return (bool)(theByte & MIDI_STATUSMASK); +} + +bool midi_is_realtime(uint8_t theByte) { + return (theByte >= MIDI_CLOCK); +} + +midi_packet_length_t midi_packet_length(uint8_t status) { + switch (status & 0xF0) { + case MIDI_CC: + case MIDI_NOTEON: + case MIDI_NOTEOFF: + case MIDI_AFTERTOUCH: + case MIDI_PITCHBEND: + return THREE; + case MIDI_PROGCHANGE: + case MIDI_CHANPRESSURE: + case MIDI_SONGSELECT: + return TWO; + case 0xF0: + switch (status) { + case MIDI_CLOCK: + case MIDI_TICK: + case MIDI_START: + case MIDI_CONTINUE: + case MIDI_STOP: + case MIDI_ACTIVESENSE: + case MIDI_RESET: + case MIDI_TUNEREQUEST: + return ONE; + case MIDI_SONGPOSITION: + return THREE; + case MIDI_TC_QUARTERFRAME: + case MIDI_SONGSELECT: + return TWO; + case SYSEX_END: + case SYSEX_BEGIN: + default: + return UNDEFINED; + } + default: + return UNDEFINED; + } +} + +void midi_send_cc(MidiDevice* device, uint8_t chan, uint8_t num, uint8_t val) { + // CC Status: 0xB0 to 0xBF where the low nibble is the MIDI channel. + // CC Data: Controller Num, Controller Val + device->send_func(device, 3, MIDI_CC | (chan & MIDI_CHANMASK), num & 0x7F, val & 0x7F); +} + +void midi_send_noteon(MidiDevice* device, uint8_t chan, uint8_t num, uint8_t vel) { + // Note Data: Note Num, Note Velocity + device->send_func(device, 3, MIDI_NOTEON | (chan & MIDI_CHANMASK), num & 0x7F, vel & 0x7F); +} + +void midi_send_noteoff(MidiDevice* device, uint8_t chan, uint8_t num, uint8_t vel) { + // Note Data: Note Num, Note Velocity + device->send_func(device, 3, MIDI_NOTEOFF | (chan & MIDI_CHANMASK), num & 0x7F, vel & 0x7F); +} + +void midi_send_aftertouch(MidiDevice* device, uint8_t chan, uint8_t note_num, uint8_t amt) { + device->send_func(device, 3, MIDI_AFTERTOUCH | (chan & MIDI_CHANMASK), note_num & 0x7F, amt & 0x7F); +} + +// XXX does this work right? +// amt in range -0x2000, 0x1fff +// uAmt should be in range.. +// 0x0000 to 0x3FFF +void midi_send_pitchbend(MidiDevice* device, uint8_t chan, int16_t amt) { + uint16_t uAmt; + // check range + if (amt > 0x1fff) { + uAmt = 0x3FFF; + } else if (amt < -0x2000) { + uAmt = 0; + } else { + uAmt = amt + 0x2000; + } + device->send_func(device, 3, MIDI_PITCHBEND | (chan & MIDI_CHANMASK), uAmt & 0x7F, (uAmt >> 7) & 0x7F); +} + +void midi_send_programchange(MidiDevice* device, uint8_t chan, uint8_t num) { + device->send_func(device, 2, MIDI_PROGCHANGE | (chan & MIDI_CHANMASK), num & 0x7F, 0); +} + +void midi_send_channelpressure(MidiDevice* device, uint8_t chan, uint8_t amt) { + device->send_func(device, 2, MIDI_CHANPRESSURE | (chan & MIDI_CHANMASK), amt & 0x7F, 0); +} + +void midi_send_clock(MidiDevice* device) { + device->send_func(device, 1, MIDI_CLOCK, 0, 0); +} + +void midi_send_tick(MidiDevice* device) { + device->send_func(device, 1, MIDI_TICK, 0, 0); +} + +void midi_send_start(MidiDevice* device) { + device->send_func(device, 1, MIDI_START, 0, 0); +} + +void midi_send_continue(MidiDevice* device) { + device->send_func(device, 1, MIDI_CONTINUE, 0, 0); +} + +void midi_send_stop(MidiDevice* device) { + device->send_func(device, 1, MIDI_STOP, 0, 0); +} + +void midi_send_activesense(MidiDevice* device) { + device->send_func(device, 1, MIDI_ACTIVESENSE, 0, 0); +} + +void midi_send_reset(MidiDevice* device) { + device->send_func(device, 1, MIDI_RESET, 0, 0); +} + +void midi_send_tcquarterframe(MidiDevice* device, uint8_t time) { + device->send_func(device, 2, MIDI_TC_QUARTERFRAME, time & 0x7F, 0); +} + +// XXX is this right? +void midi_send_songposition(MidiDevice* device, uint16_t pos) { + device->send_func(device, 3, MIDI_SONGPOSITION, pos & 0x7F, (pos >> 7) & 0x7F); +} + +void midi_send_songselect(MidiDevice* device, uint8_t song) { + device->send_func(device, 2, MIDI_SONGSELECT, song & 0x7F, 0); +} + +void midi_send_tunerequest(MidiDevice* device) { + device->send_func(device, 1, MIDI_TUNEREQUEST, 0, 0); +} + +void midi_send_byte(MidiDevice* device, uint8_t b) { + device->send_func(device, 1, b, 0, 0); +} + +void midi_send_data(MidiDevice* device, uint16_t count, uint8_t byte0, uint8_t byte1, uint8_t byte2) { + // ensure that the count passed along is always 3 or lower + if (count > 3) { + // TODO how to do this correctly? + } + device->send_func(device, count, byte0, byte1, byte2); +} + +void midi_send_array(MidiDevice* device, uint16_t count, uint8_t* array) { + uint16_t i; + for (i = 0; i < count; i += 3) { + uint8_t b[3] = {0, 0, 0}; + uint16_t to_send = count - i; + to_send = (to_send > 3) ? 3 : to_send; + memcpy(b, array + i, to_send); + midi_send_data(device, to_send, b[0], b[1], b[2]); + } +} + +void midi_register_cc_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_cc_callback = func; +} + +void midi_register_noteon_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_noteon_callback = func; +} + +void midi_register_noteoff_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_noteoff_callback = func; +} + +void midi_register_aftertouch_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_aftertouch_callback = func; +} + +void midi_register_pitchbend_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_pitchbend_callback = func; +} + +void midi_register_songposition_callback(MidiDevice* device, midi_three_byte_func_t func) { + device->input_songposition_callback = func; +} + +void midi_register_progchange_callback(MidiDevice* device, midi_two_byte_func_t func) { + device->input_progchange_callback = func; +} + +void midi_register_chanpressure_callback(MidiDevice* device, midi_two_byte_func_t func) { + device->input_chanpressure_callback = func; +} + +void midi_register_songselect_callback(MidiDevice* device, midi_two_byte_func_t func) { + device->input_songselect_callback = func; +} + +void midi_register_tc_quarterframe_callback(MidiDevice* device, midi_two_byte_func_t func) { + device->input_tc_quarterframe_callback = func; +} + +void midi_register_realtime_callback(MidiDevice* device, midi_one_byte_func_t func) { + device->input_realtime_callback = func; +} + +void midi_register_tunerequest_callback(MidiDevice* device, midi_one_byte_func_t func) { + device->input_tunerequest_callback = func; +} + +void midi_register_sysex_callback(MidiDevice* device, midi_sysex_func_t func) { + device->input_sysex_callback = func; +} + +void midi_register_fallthrough_callback(MidiDevice* device, midi_var_byte_func_t func) { + device->input_fallthrough_callback = func; +} + +void midi_register_catchall_callback(MidiDevice* device, midi_var_byte_func_t func) { + device->input_catchall_callback = func; +} -- cgit v1.2.3