mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-11-25 20:56:42 +00:00
264 lines
8.1 KiB
C
264 lines
8.1 KiB
C
#include "process_midi.h"
|
|
|
|
#if 0
|
|
bool midi_activated = false;
|
|
uint8_t midi_starting_note = 0x0C;
|
|
int midi_offset = 7;
|
|
#endif
|
|
|
|
typedef union {
|
|
uint16_t raw;
|
|
struct {
|
|
uint8_t octave :4;
|
|
uint8_t velocity :4;
|
|
uint8_t channel :4;
|
|
};
|
|
} midi_config_t;
|
|
|
|
midi_config_t midi_config;
|
|
|
|
#define MIDI_INVALID_NOTE 0xFF
|
|
|
|
#if 0
|
|
typedef struct {
|
|
uint64_t low;
|
|
uint64_t high;
|
|
} uint128_t;
|
|
|
|
#if 0
|
|
static void right_shift_uint128_t(uint128_t* val, uint8_t shift)
|
|
{
|
|
uint64_t high_mask = ~0 >> (64 - shift);
|
|
uint64_t high_bits = (val->high & high_mask) << (64 - shift);
|
|
val->high = val->high >> shift;
|
|
val->low = (val->low >> shift) | high_bits;
|
|
}
|
|
#endif
|
|
|
|
static uint64_t left_shift_uint64_t(uint64_t val, uint8_t shift)
|
|
{
|
|
dprintf("left_shift_uint64_t(val, %c) ...\n", val, shift);
|
|
while (shift > 16u) {
|
|
dprintf(" left_shift_uint64_t: val=?, shift=%c\n", val, shift);
|
|
val <<= 16;
|
|
shift -= 16;
|
|
}
|
|
dprintf(" left_shift_uint64_t: val=?, shift=%c\n", val, shift);
|
|
val <<= shift;
|
|
return val;
|
|
}
|
|
|
|
static void set_bit_uint128_t(uint128_t* val, uint8_t shift)
|
|
{
|
|
uint64_t x = 1u;
|
|
|
|
if (shift < 64)
|
|
{
|
|
x = left_shift_uint64_t(x, shift);
|
|
dprintf("x: %d\n", x);
|
|
dprintf("set_bit_uint128_t (%d): 0x%016X%016X\n", shift, 0, x);
|
|
val->low = val->low | left_shift_uint64_t(1u, shift);
|
|
}
|
|
else
|
|
{
|
|
x = left_shift_uint64_t(x, shift - 64);
|
|
dprintf("set_bit_uint128_t (%d): 0x%016X%016X\n", shift, x, 0);
|
|
val->high = val->high | left_shift_uint64_t(1u, shift - 64);
|
|
}
|
|
}
|
|
|
|
static void clear_bit_uint128_t(uint128_t* val, uint8_t shift)
|
|
{
|
|
if (shift < 64)
|
|
{
|
|
val->low = val->low & ~left_shift_uint64_t(1u, shift);
|
|
}
|
|
else
|
|
{
|
|
val->high = val->high & ~left_shift_uint64_t(1u, shift - 64);
|
|
}
|
|
}
|
|
|
|
static bool is_bit_set_uint128_t(const uint128_t* val, uint8_t shift)
|
|
{
|
|
if (shift < 64)
|
|
{
|
|
return !!(val->low & (1u << shift));
|
|
}
|
|
else
|
|
{
|
|
return !!(val->high & (1u << (shift - 64)));
|
|
}
|
|
}
|
|
|
|
uint128_t note_status = { 0, 0 };
|
|
#endif
|
|
|
|
|
|
#define MIDI_MAX_NOTES_ON 10
|
|
|
|
typedef struct {
|
|
uint8_t note;
|
|
uint8_t tone;
|
|
} midi_notes_on_array_entry_t;
|
|
|
|
typedef struct {
|
|
uint8_t length;
|
|
midi_notes_on_array_entry_t values[MIDI_MAX_NOTES_ON];
|
|
} midi_notes_on_array_t;
|
|
|
|
static midi_notes_on_array_t notes_on;
|
|
|
|
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_0 - MIDI_OCTAVE_MIN;
|
|
midi_config.velocity = (MIDI_VELOCITY_MAX - MIDI_VELOCITY_MIN);
|
|
midi_config.channel = 0;
|
|
notes_on.length = 0;
|
|
}
|
|
|
|
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 && notes_on.length < MIDI_MAX_NOTES_ON) {
|
|
uint8_t note = 12 * midi_config.octave + tone;
|
|
midi_send_noteon(&midi_device, channel, note, velocity);
|
|
dprintf("midi noteon channel:%d note:%d velocity:%d\n", channel, note, velocity);
|
|
notes_on.values[notes_on.length].note = note;
|
|
notes_on.values[notes_on.length].tone = tone;
|
|
notes_on.length++;
|
|
}
|
|
else {
|
|
for (uint8_t i = 0; i < notes_on.length; i++) {
|
|
uint8_t note = notes_on.values[i].note;
|
|
if (tone == notes_on.values[i].tone) {
|
|
midi_send_noteoff(&midi_device, channel, note, velocity);
|
|
dprintf("midi noteoff channel:%d note:%d velocity:%d\n", channel, note, velocity);
|
|
|
|
for (uint8_t j=i; j < notes_on.length - 1; j++)
|
|
{
|
|
notes_on.values[j] = notes_on.values[j + 1];
|
|
}
|
|
|
|
notes_on.length--;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
case MIDI_OCTAVE_MIN ... MIDI_OCTAVE_MAX:
|
|
if (record->event.pressed)
|
|
midi_config.octave = keycode - MIDI_OCTAVE_MIN;
|
|
return false;
|
|
case MI_OCTD:
|
|
if (record->event.pressed && midi_config.octave > 0)
|
|
midi_config.octave--;
|
|
return false;
|
|
case MI_OCTU:
|
|
if (record->event.pressed && midi_config.octave < (MIDI_OCTAVE_MAX - MIDI_OCTAVE_MIN))
|
|
midi_config.octave++;
|
|
return false;
|
|
case MIDI_VELOCITY_MIN ... MIDI_VELOCITY_MAX:
|
|
if (record->event.pressed)
|
|
midi_config.velocity = keycode - MIDI_VELOCITY_MIN;
|
|
return false;
|
|
case MI_VELD:
|
|
if (record->event.pressed && midi_config.velocity > 0)
|
|
midi_config.velocity--;
|
|
return false;
|
|
case MI_VELU:
|
|
if (record->event.pressed)
|
|
midi_config.velocity++;
|
|
return false;
|
|
case MIDI_CHANNEL_MIN ... MIDI_CHANNEL_MAX:
|
|
if (record->event.pressed)
|
|
midi_config.channel = keycode - MIDI_CHANNEL_MIN;
|
|
return false;
|
|
case MI_CHD:
|
|
if (record->event.pressed)
|
|
midi_config.channel--;
|
|
return false;
|
|
case MI_CHU:
|
|
if (record->event.pressed)
|
|
midi_config.channel++;
|
|
return false;
|
|
case MI_SUS:
|
|
//TODO
|
|
return false;
|
|
};
|
|
|
|
#if 0
|
|
if (keycode == MI_ON && record->event.pressed) {
|
|
midi_activated = true;
|
|
#ifdef AUDIO_ENABLE
|
|
music_scale_user();
|
|
#endif
|
|
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) {
|
|
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;
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|