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- #include "audio.h"
- #include "process_audio.h"
-
- #ifndef VOICE_CHANGE_SONG
- # define VOICE_CHANGE_SONG SONG(VOICE_CHANGE_SOUND)
- #endif
- float voice_change_song[][2] = VOICE_CHANGE_SONG;
-
- #ifndef PITCH_STANDARD_A
- # define PITCH_STANDARD_A 440.0f
- #endif
-
- 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) * PITCH_STANDARD_A;
- }
-
- 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();
- PLAY_SONG(voice_change_song);
- return false;
- }
-
- if (keycode == MUV_DE && record->event.pressed) {
- voice_deiterate();
- PLAY_SONG(voice_change_song);
- 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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