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#include "audio.h"
#include "process_audio.h"
#include <math.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 powf(2.0f, (note - 69) / 12.0f) * PITCH_STANDARD_A;
}
bool process_audio(uint16_t keycode, keyrecord_t *record) {
if (keycode == QK_AUDIO_ON && record->event.pressed) {
audio_on();
return false;
}
if (keycode == QK_AUDIO_OFF && record->event.pressed) {
audio_off();
return false;
}
if (keycode == QK_AUDIO_TOGGLE && record->event.pressed) {
if (is_audio_on()) {
audio_off();
} else {
audio_on();
}
return false;
}
if (keycode == QK_AUDIO_VOICE_NEXT && record->event.pressed) {
voice_iterate();
PLAY_SONG(voice_change_song);
return false;
}
if (keycode == QK_AUDIO_VOICE_PREVIOUS && 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();
}
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