keyboard stuff
auri.ee
1#include "audio.h"
2#include "process_audio.h"
3#include <math.h>
4
5#ifndef VOICE_CHANGE_SONG
6# define VOICE_CHANGE_SONG SONG(VOICE_CHANGE_SOUND)
7#endif
8float voice_change_song[][2] = VOICE_CHANGE_SONG;
9
10#ifndef PITCH_STANDARD_A
11# define PITCH_STANDARD_A 440.0f
12#endif
13
14float compute_freq_for_midi_note(uint8_t note) {
15 // https://en.wikipedia.org/wiki/MIDI_tuning_standard
16 return powf(2.0f, (note - 69) / 12.0f) * PITCH_STANDARD_A;
17}
18
19bool process_audio(uint16_t keycode, keyrecord_t *record) {
20 if (keycode == QK_AUDIO_ON && record->event.pressed) {
21 audio_on();
22 return false;
23 }
24
25 if (keycode == QK_AUDIO_OFF && record->event.pressed) {
26 audio_off();
27 return false;
28 }
29
30 if (keycode == QK_AUDIO_TOGGLE && record->event.pressed) {
31 if (is_audio_on()) {
32 audio_off();
33 } else {
34 audio_on();
35 }
36 return false;
37 }
38
39 if (keycode == QK_AUDIO_VOICE_NEXT && record->event.pressed) {
40 voice_iterate();
41 PLAY_SONG(voice_change_song);
42 return false;
43 }
44
45 if (keycode == QK_AUDIO_VOICE_PREVIOUS && record->event.pressed) {
46 voice_deiterate();
47 PLAY_SONG(voice_change_song);
48 return false;
49 }
50
51 return true;
52}
53
54void process_audio_noteon(uint8_t note) {
55 play_note(compute_freq_for_midi_note(note), 0xF);
56}
57
58void process_audio_noteoff(uint8_t note) {
59 stop_note(compute_freq_for_midi_note(note));
60}
61
62void process_audio_all_notes_off(void) {
63 stop_all_notes();
64}