+/* Copyright 2016 Jack Humbert
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
#include "process_midi.h"
-bool midi_activated = false;
-uint8_t midi_starting_note = 0x0C;
-int midi_offset = 7;
+#ifdef MIDI_ENABLE
+#include <LUFA/Drivers/USB/USB.h>
+#include "midi.h"
+#include "qmk_midi.h"
-bool process_midi(uint16_t keycode, keyrecord_t *record) {
- if (keycode == MI_ON && record->event.pressed) {
- midi_activated = true;
-#ifdef AUDIO_ENABLE
- music_scale_user();
-#endif
- return false;
- }
+#ifdef MIDI_BASIC
+
+void process_midi_basic_noteon(uint8_t note)
+{
+ midi_send_noteon(&midi_device, 0, note, 128);
+}
+
+void process_midi_basic_noteoff(uint8_t note)
+{
+ midi_send_noteoff(&midi_device, 0, note, 0);
+}
+
+void process_midi_all_notes_off(void)
+{
+ midi_send_cc(&midi_device, 0, 0x7B, 0);
+}
+
+#endif // MIDI_BASIC
+
+#ifdef MIDI_ADVANCED
+
+#include "timer.h"
+
+static uint8_t tone_status[MIDI_TONE_COUNT];
+
+static uint8_t midi_modulation;
+static int8_t midi_modulation_step;
+static uint16_t midi_modulation_timer;
+midi_config_t midi_config;
+
+inline uint8_t compute_velocity(uint8_t setting)
+{
+ return (setting + 1) * (128 / (MIDI_VELOCITY_MAX - MIDI_VELOCITY_MIN + 1));
+}
+
+void midi_init(void)
+{
+ midi_config.octave = MI_OCT_2 - MIDI_OCTAVE_MIN;
+ midi_config.transpose = 0;
+ midi_config.velocity = (MIDI_VELOCITY_MAX - MIDI_VELOCITY_MIN);
+ midi_config.channel = 0;
+ midi_config.modulation_interval = 8;
- if (keycode == MI_OFF && record->event.pressed) {
- midi_activated = false;
- midi_send_cc(&midi_device, 0, 0x7B, 0);
- return false;
+ for (uint8_t i = 0; i < MIDI_TONE_COUNT; i++)
+ {
+ tone_status[i] = MIDI_INVALID_NOTE;
}
- if (midi_activated) {
- if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
- if (record->event.pressed) {
- midi_starting_note++; // Change key
- midi_send_cc(&midi_device, 0, 0x7B, 0);
- }
- return false;
- }
- if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
- if (record->event.pressed) {
- midi_starting_note--; // Change key
- midi_send_cc(&midi_device, 0, 0x7B, 0);
- }
- return false;
- }
- if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
- midi_offset++; // Change scale
- midi_send_cc(&midi_device, 0, 0x7B, 0);
- return false;
- }
- if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
- midi_offset--; // Change scale
- midi_send_cc(&midi_device, 0, 0x7B, 0);
- return false;
- }
- // basic
- // uint8_t note = (midi_starting_note + SCALE[record->event.key.col + midi_offset])+12*(MATRIX_ROWS - record->event.key.row);
- // advanced
- // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+12*(MATRIX_ROWS - record->event.key.row);
- // guitar
- uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+5*(MATRIX_ROWS - record->event.key.row);
- // violin
- // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+7*(MATRIX_ROWS - record->event.key.row);
-
- if (record->event.pressed) {
- // midi_send_noteon(&midi_device, record->event.key.row, midi_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, midi_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;
+ midi_modulation = 0;
+ midi_modulation_step = 0;
+ midi_modulation_timer = 0;
+}
+
+uint8_t midi_compute_note(uint16_t keycode)
+{
+ return 12 * midi_config.octave + (keycode - MIDI_TONE_MIN) + midi_config.transpose;
+}
+
+bool process_midi(uint16_t keycode, keyrecord_t *record)
+{
+ switch (keycode) {
+ case MIDI_TONE_MIN ... MIDI_TONE_MAX:
+ {
+ uint8_t channel = midi_config.channel;
+ uint8_t tone = keycode - MIDI_TONE_MIN;
+ uint8_t velocity = compute_velocity(midi_config.velocity);
+ if (record->event.pressed) {
+ uint8_t note = midi_compute_note(keycode);
+ midi_send_noteon(&midi_device, channel, note, velocity);
+ dprintf("midi noteon channel:%d note:%d velocity:%d\n", channel, note, velocity);
+ tone_status[tone] = note;
+ }
+ else {
+ uint8_t note = tone_status[tone];
+ if (note != MIDI_INVALID_NOTE)
+ {
+ midi_send_noteoff(&midi_device, channel, note, velocity);
+ dprintf("midi noteoff channel:%d note:%d velocity:%d\n", channel, note, velocity);
+ }
+ tone_status[tone] = MIDI_INVALID_NOTE;
+ }
+ return false;
+ }
+ case MIDI_OCTAVE_MIN ... MIDI_OCTAVE_MAX:
+ if (record->event.pressed) {
+ midi_config.octave = keycode - MIDI_OCTAVE_MIN;
+ dprintf("midi octave %d\n", midi_config.octave);
+ }
+ return false;
+ case MI_OCTD:
+ if (record->event.pressed && midi_config.octave > 0) {
+ midi_config.octave--;
+ dprintf("midi octave %d\n", midi_config.octave);
+ }
+ return false;
+ case MI_OCTU:
+ if (record->event.pressed && midi_config.octave < (MIDI_OCTAVE_MAX - MIDI_OCTAVE_MIN)) {
+ midi_config.octave++;
+ dprintf("midi octave %d\n", midi_config.octave);
+ }
+ return false;
+ case MIDI_TRANSPOSE_MIN ... MIDI_TRANSPOSE_MAX:
+ if (record->event.pressed) {
+ midi_config.transpose = keycode - MI_TRNS_0;
+ dprintf("midi transpose %d\n", midi_config.transpose);
+ }
+ return false;
+ case MI_TRNSD:
+ if (record->event.pressed && midi_config.transpose > (MIDI_TRANSPOSE_MIN - MI_TRNS_0)) {
+ midi_config.transpose--;
+ dprintf("midi transpose %d\n", midi_config.transpose);
+ }
+ return false;
+ case MI_TRNSU:
+ if (record->event.pressed && midi_config.transpose < (MIDI_TRANSPOSE_MAX - MI_TRNS_0)) {
+ const bool positive = midi_config.transpose > 0;
+ midi_config.transpose++;
+ if (positive && midi_config.transpose < 0)
+ midi_config.transpose--;
+ dprintf("midi transpose %d\n", midi_config.transpose);
+ }
+ return false;
+ case MIDI_VELOCITY_MIN ... MIDI_VELOCITY_MAX:
+ if (record->event.pressed) {
+ midi_config.velocity = keycode - MIDI_VELOCITY_MIN;
+ dprintf("midi velocity %d\n", midi_config.velocity);
+ }
+ return false;
+ case MI_VELD:
+ if (record->event.pressed && midi_config.velocity > 0) {
+ midi_config.velocity--;
+ dprintf("midi velocity %d\n", midi_config.velocity);
+ }
+ return false;
+ case MI_VELU:
+ if (record->event.pressed) {
+ midi_config.velocity++;
+ dprintf("midi velocity %d\n", midi_config.velocity);
+ }
+ return false;
+ case MIDI_CHANNEL_MIN ... MIDI_CHANNEL_MAX:
+ if (record->event.pressed) {
+ midi_config.channel = keycode - MIDI_CHANNEL_MIN;
+ dprintf("midi channel %d\n", midi_config.channel);
+ }
+ return false;
+ case MI_CHD:
+ if (record->event.pressed) {
+ midi_config.channel--;
+ dprintf("midi channel %d\n", midi_config.channel);
+ }
+ return false;
+ case MI_CHU:
+ if (record->event.pressed) {
+ midi_config.channel++;
+ dprintf("midi channel %d\n", midi_config.channel);
+ }
+ return false;
+ case MI_ALLOFF:
+ if (record->event.pressed) {
+ midi_send_cc(&midi_device, midi_config.channel, 0x7B, 0);
+ dprintf("midi all notes off\n");
+ }
+ return false;
+ case MI_SUS:
+ midi_send_cc(&midi_device, midi_config.channel, 0x40, record->event.pressed ? 127 : 0);
+ dprintf("midi sustain %d\n", record->event.pressed);
+ return false;
+ case MI_PORT:
+ midi_send_cc(&midi_device, midi_config.channel, 0x41, record->event.pressed ? 127 : 0);
+ dprintf("midi portamento %d\n", record->event.pressed);
+ return false;
+ case MI_SOST:
+ midi_send_cc(&midi_device, midi_config.channel, 0x42, record->event.pressed ? 127 : 0);
+ dprintf("midi sostenuto %d\n", record->event.pressed);
+ return false;
+ case MI_SOFT:
+ midi_send_cc(&midi_device, midi_config.channel, 0x43, record->event.pressed ? 127 : 0);
+ dprintf("midi soft %d\n", record->event.pressed);
+ return false;
+ case MI_LEG:
+ midi_send_cc(&midi_device, midi_config.channel, 0x43, record->event.pressed ? 127 : 0);
+ dprintf("midi legato %d\n", record->event.pressed);
+ return false;
+ case MI_MOD:
+ midi_modulation_step = record->event.pressed ? 1 : -1;
+ return false;
+ case MI_MODSD:
+ if (record->event.pressed) {
+ midi_config.modulation_interval++;
+ // prevent overflow
+ if (midi_config.modulation_interval == 0)
+ midi_config.modulation_interval--;
+ dprintf("midi modulation interval %d\n", midi_config.modulation_interval);
+ }
+ return false;
+ case MI_MODSU:
+ if (record->event.pressed && midi_config.modulation_interval > 0) {
+ midi_config.modulation_interval--;
+ dprintf("midi modulation interval %d\n", midi_config.modulation_interval);
+ }
+ return false;
+ };
+
+ return true;
+}
+
+#endif // MIDI_ADVANCED
+
+void midi_task(void)
+{
+ midi_device_process(&midi_device);
+#ifdef MIDI_ADVANCED
+ if (timer_elapsed(midi_modulation_timer) < midi_config.modulation_interval)
+ return;
+ midi_modulation_timer = timer_read();
+
+ if (midi_modulation_step != 0)
+ {
+ dprintf("midi modulation %d\n", midi_modulation);
+ midi_send_cc(&midi_device, midi_config.channel, 0x1, midi_modulation);
+
+ if (midi_modulation_step < 0 && midi_modulation < -midi_modulation_step) {
+ midi_modulation = 0;
+ midi_modulation_step = 0;
+ return;
+ }
+
+ midi_modulation += midi_modulation_step;
+
+ if (midi_modulation > 127)
+ midi_modulation = 127;
}
- return true;
+#endif
}
+
+
+
+#endif // MIDI_ENABLE
projects / qmk_firmware.git / blobdiff