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