forked from mirrors/qmk_firmware
a64ae10662
Update existing keymaps to enable MIDI_BASIC functionality. Also added an option MIDI_ENABLE_STRICT to be strict about keycode use (which also reduces memory footprint at runtime)
62 lines
No EOL
1.3 KiB
C
62 lines
No EOL
1.3 KiB
C
#include "audio.h"
|
|
#include "process_audio.h"
|
|
|
|
static float compute_freq_for_midi_note(uint8_t note)
|
|
{
|
|
// https://en.wikipedia.org/wiki/MIDI_tuning_standard
|
|
return pow(2.0, (note - 69) / 12.0) * 440.0f;
|
|
}
|
|
|
|
bool process_audio(uint16_t keycode, keyrecord_t *record) {
|
|
|
|
if (keycode == AU_ON && record->event.pressed) {
|
|
audio_on();
|
|
return false;
|
|
}
|
|
|
|
if (keycode == AU_OFF && record->event.pressed) {
|
|
audio_off();
|
|
return false;
|
|
}
|
|
|
|
if (keycode == AU_TOG && record->event.pressed) {
|
|
if (is_audio_on())
|
|
{
|
|
audio_off();
|
|
}
|
|
else
|
|
{
|
|
audio_on();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (keycode == MUV_IN && record->event.pressed) {
|
|
voice_iterate();
|
|
music_scale_user();
|
|
return false;
|
|
}
|
|
|
|
if (keycode == MUV_DE && record->event.pressed) {
|
|
voice_deiterate();
|
|
music_scale_user();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void process_audio_noteon(uint8_t note) {
|
|
play_note(compute_freq_for_midi_note(note), 0xF);
|
|
}
|
|
|
|
void process_audio_noteoff(uint8_t note) {
|
|
stop_note(compute_freq_for_midi_note(note));
|
|
}
|
|
|
|
void process_audio_stop_all_notes(void) {
|
|
stop_all_notes();
|
|
}
|
|
|
|
__attribute__ ((weak))
|
|
void audio_on_user() {} |