quantum/process_keycode/process_audio.c

   1 #include "audio.h"
   2 #include "process_audio.h"
   3
   4 #ifndef VOICE_CHANGE_SONG
   5     #define VOICE_CHANGE_SONG SONG(VOICE_CHANGE_SOUND)
   6 #endif
   7 float voice_change_song[][2] = VOICE_CHANGE_SONG;
   8
   9 #ifndef PITCH_STANDARD_A
  10     #define PITCH_STANDARD_A 440.0f
  11 #endif
  12
  13 float compute_freq_for_midi_note(uint8_t note)
  14 {
  15     // https://en.wikipedia.org/wiki/MIDI_tuning_standard
  16     return pow(2.0, (note - 69) / 12.0) * PITCH_STANDARD_A;
  17 }
  18
  19 bool process_audio(uint16_t keycode, keyrecord_t *record) {
  20
  21     if (keycode == AU_ON && record->event.pressed) {
  22       audio_on();
  23       return false;
  24     }
  25
  26     if (keycode == AU_OFF && record->event.pressed) {
  27       audio_off();
  28       return false;
  29     }
  30
  31     if (keycode == AU_TOG && record->event.pressed) {
  32         if (is_audio_on()) {
  33             audio_off();
  34         } else {
  35             audio_on();
  36         }
  37         return false;
  38     }
  39
  40     if (keycode == MUV_IN && record->event.pressed) {
  41         voice_iterate();
  42         PLAY_SONG(voice_change_song);
  43         return false;
  44     }
  45
  46     if (keycode == MUV_DE && record->event.pressed) {
  47         voice_deiterate();
  48         PLAY_SONG(voice_change_song);
  49         return false;
  50     }
  51
  52     return true;
  53 }
  54
  55 void process_audio_noteon(uint8_t note) {
  56     play_note(compute_freq_for_midi_note(note), 0xF);
  57 }
  58
  59 void process_audio_noteoff(uint8_t note) {
  60     stop_note(compute_freq_for_midi_note(note));
  61 }
  62
  63 void process_audio_all_notes_off(void) {
  64     stop_all_notes();
  65 }
  66
  67 __attribute__ ((weak))
  68 void audio_on_user() {}