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- #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_all_notes_off(void) {
- stop_all_notes();
- }
- __attribute__ ((weak))
- void audio_on_user() {}
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