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qmk_firmware/quantum/quantum.c
Jack Humbert fde477a927 updates midi functionality (#331) 
* implements leader key for planck experimental

* allows override of leader timeout

* adds ability to use the leader key in seq

* fixes leader keycode

* adds chording prototype

* fixes keycode detection

* moves music mode to quantum.c

* disables chording by default

* adds music sequencer functionality

* implements audio/music functions in quantum.c

* splits up process_action to allow independent processing of actions

* moves midi stuff to quantum.c

* adds additional scales for midi
2016-05-15 00:51:06 -04:00

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#include "quantum.h"
__attribute__ ((weak))
void matrix_init_kb(void) {}
__attribute__ ((weak))
void matrix_scan_kb(void) {}
__attribute__ ((weak))
bool process_action_kb(keyrecord_t *record) {
return true;
}
__attribute__ ((weak))
void leader_start(void) {}
__attribute__ ((weak))
void leader_end(void) {}
#ifdef AUDIO_ENABLE
uint8_t starting_note = 0x0C;
int offset = 7;
bool music_activated = false;
float music_scale[][2] = SONG(MUSIC_SCALE_SOUND);
#endif
#ifdef MIDI_ENABLE
bool midi_activated = false;
#endif
// Leader key stuff
bool leading = false;
uint16_t leader_time = 0;
uint16_t leader_sequence[3] = {0, 0, 0};
uint8_t leader_sequence_size = 0;
// Chording stuff
#define CHORDING_MAX 4
bool chording = false;
uint8_t chord_keys[CHORDING_MAX] = {0};
uint8_t chord_key_count = 0;
uint8_t chord_key_down = 0;
bool keys_chord(uint8_t keys[]) {
uint8_t keys_size = sizeof(keys)/sizeof(keys[0]);
bool pass = true;
uint8_t in = 0;
for (uint8_t i = 0; i < chord_key_count; i++) {
bool found = false;
for (uint8_t j = 0; j < keys_size; j++) {
if (chord_keys[i] == (keys[j] & 0xFF)) {
in++; // detects key in chord
found = true;
break;
}
}
if (found)
continue;
if (chord_keys[i] != 0) {
pass = false; // makes sure rest are blank
}
}
return (pass && (in == keys_size));
}
static bool music_sequence_recording = false;
static bool music_sequence_playing = false;
static float music_sequence[16] = {0};
static uint8_t music_sequence_count = 0;
static uint8_t music_sequence_position = 0;
static uint16_t music_sequence_timer = 0;
static uint16_t music_sequence_interval = 100;
bool process_record_quantum(keyrecord_t *record) {
/* This gets the keycode from the key pressed */
keypos_t key = record->event.key;
uint16_t keycode;
#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
uint8_t layer;
if (record->event.pressed) {
layer = layer_switch_get_layer(key);
update_source_layers_cache(key, layer);
} else {
layer = read_source_layers_cache(key);
}
keycode = keymap_key_to_keycode(layer, key);
#else
keycode = keymap_key_to_keycode(layer_switch_get_layer(key), key);
#endif
// This is how you use actions here
// if (keycode == KC_LEAD) {
// action_t action;
// action.code = ACTION_DEFAULT_LAYER_SET(0);
// process_action(record, action);
// return false;
// }
#ifdef MIDI_ENABLE
if (keycode == MI_ON && record->event.pressed) {
midi_activated = true;
PLAY_NOTE_ARRAY(music_scale, false, 0);
return false;
}
if (keycode == MI_OFF && record->event.pressed) {
midi_activated = false;
midi_send_cc(&midi_device, 0, 0x7B, 0);
return false;
}
if (midi_activated) {
if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
if (record->event.pressed) {
starting_note++; // Change key
midi_send_cc(&midi_device, 0, 0x7B, 0);
// midi_send_cc(&midi_device, 1, 0x7B, 0);
// midi_send_cc(&midi_device, 2, 0x7B, 0);
// midi_send_cc(&midi_device, 3, 0x7B, 0);
// midi_send_cc(&midi_device, 4, 0x7B, 0);
}
return false;
}
if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
if (record->event.pressed) {
starting_note--; // Change key
midi_send_cc(&midi_device, 0, 0x7B, 0);
// midi_send_cc(&midi_device, 1, 0x7B, 0);
// midi_send_cc(&midi_device, 2, 0x7B, 0);
// midi_send_cc(&midi_device, 3, 0x7B, 0);
// midi_send_cc(&midi_device, 4, 0x7B, 0);
}
return false;
}
if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
offset++; // Change scale
midi_send_cc(&midi_device, 0, 0x7B, 0);
// midi_send_cc(&midi_device, 1, 0x7B, 0);
// midi_send_cc(&midi_device, 2, 0x7B, 0);
// midi_send_cc(&midi_device, 3, 0x7B, 0);
// midi_send_cc(&midi_device, 4, 0x7B, 0);
return false;
}
if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
offset--; // Change scale
midi_send_cc(&midi_device, 0, 0x7B, 0);
// midi_send_cc(&midi_device, 1, 0x7B, 0);
// midi_send_cc(&midi_device, 2, 0x7B, 0);
// midi_send_cc(&midi_device, 3, 0x7B, 0);
// midi_send_cc(&midi_device, 4, 0x7B, 0);
return false;
}
// basic
// uint8_t note = (starting_note + SCALE[record->event.key.col + offset])+12*(MATRIX_ROWS - record->event.key.row);
// advanced
// uint8_t note = (starting_note + record->event.key.col + offset)+12*(MATRIX_ROWS - record->event.key.row);
// guitar
uint8_t note = (starting_note + record->event.key.col + offset)+5*(MATRIX_ROWS - record->event.key.row);
// violin
// uint8_t note = (starting_note + record->event.key.col + offset)+7*(MATRIX_ROWS - record->event.key.row);
if (record->event.pressed) {
// midi_send_noteon(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
midi_send_noteon(&midi_device, 0, note, 127);
} else {
// midi_send_noteoff(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
midi_send_noteoff(&midi_device, 0, note, 127);
}
if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
return false;
}
#endif
#ifdef AUDIO_ENABLE
if (keycode == AU_ON && record->event.pressed) {
audio_on();
audio_on_callback();
return false;
}
if (keycode == AU_OFF && record->event.pressed) {
audio_off();
return false;
}
if (keycode == MU_ON && record->event.pressed) {
music_activated = true;
PLAY_NOTE_ARRAY(music_scale, false, 0);
return false;
}
if (keycode == MU_OFF && record->event.pressed) {
music_activated = false;
stop_all_notes();
return false;
}
if (keycode == MUV_IN && record->event.pressed) {
voice_iterate();
PLAY_NOTE_ARRAY(music_scale, false, 0);
return false;
}
if (keycode == MUV_DE && record->event.pressed) {
voice_deiterate();
PLAY_NOTE_ARRAY(music_scale, false, 0);
return false;
}
if (music_activated) {
if (keycode == KC_LCTL && record->event.pressed) { // Start recording
stop_all_notes();
music_sequence_recording = true;
music_sequence_playing = false;
music_sequence_count = 0;
return false;
}
if (keycode == KC_LALT && record->event.pressed) { // Stop recording/playing
stop_all_notes();
music_sequence_recording = false;
music_sequence_playing = false;
return false;
}
if (keycode == KC_LGUI && record->event.pressed) { // Start playing
stop_all_notes();
music_sequence_recording = false;
music_sequence_playing = true;
music_sequence_position = 0;
music_sequence_timer = 0;
return false;
}
if (keycode == KC_UP) {
if (record->event.pressed)
music_sequence_interval-=10;
return false;
}
if (keycode == KC_DOWN) {
if (record->event.pressed)
music_sequence_interval+=10;
return false;
}
float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row));
if (record->event.pressed) {
play_note(freq, 0xF);
if (music_sequence_recording) {
music_sequence[music_sequence_count] = freq;
music_sequence_count++;
}
} else {
stop_note(freq);
}
if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
return false;
}
#endif
#ifndef DISABLE_LEADER
// Leader key set-up
if (record->event.pressed) {
if (!leading && keycode == KC_LEAD) {
leader_start();
leading = true;
leader_time = timer_read();
leader_sequence_size = 0;
leader_sequence[0] = 0;
leader_sequence[1] = 0;
leader_sequence[2] = 0;
return false;
}
if (leading && timer_elapsed(leader_time) < LEADER_TIMEOUT) {
leader_sequence[leader_sequence_size] = keycode;
leader_sequence_size++;
return false;
}
}
#endif
#define DISABLE_CHORDING
#ifndef DISABLE_CHORDING
if (keycode >= 0x5700 && keycode <= 0x57FF) {
if (record->event.pressed) {
if (!chording) {
chording = true;
for (uint8_t i = 0; i < CHORDING_MAX; i++)
chord_keys[i] = 0;
chord_key_count = 0;
chord_key_down = 0;
}
chord_keys[chord_key_count] = (keycode & 0xFF);
chord_key_count++;
chord_key_down++;
return false;
} else {
if (chording) {
chord_key_down--;
if (chord_key_down == 0) {
chording = false;
// Chord Dictionary
if (keys_chord((uint8_t[]){KC_ENTER, KC_SPACE})) {
register_code(KC_A);
unregister_code(KC_A);
return false;
}
for (uint8_t i = 0; i < chord_key_count; i++) {
register_code(chord_keys[i]);
unregister_code(chord_keys[i]);
return false;
}
}
}
}
}
#endif
return process_action_kb(record);
}
void matrix_init_quantum() {
matrix_init_kb();
}
void matrix_scan_quantum() {
#ifdef AUDIO_ENABLE
if (music_sequence_playing) {
if ((music_sequence_timer == 0) || (timer_elapsed(music_sequence_timer) > music_sequence_interval)) {
music_sequence_timer = timer_read();
stop_note(music_sequence[(music_sequence_position - 1 < 0)?(music_sequence_position - 1 + music_sequence_count):(music_sequence_position - 1)]);
play_note(music_sequence[music_sequence_position], 0xF);
music_sequence_position = (music_sequence_position + 1) % music_sequence_count;
}
}
#endif
matrix_scan_kb();
}
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