60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#include "audio.h"
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#include "process_audio.h"
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#ifndef VOICE_CHANGE_SONG
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# define VOICE_CHANGE_SONG SONG(VOICE_CHANGE_SOUND)
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#endif
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float voice_change_song[][2] = VOICE_CHANGE_SONG;
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#ifndef PITCH_STANDARD_A
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# define PITCH_STANDARD_A 440.0f
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#endif
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float compute_freq_for_midi_note(uint8_t note) {
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// https://en.wikipedia.org/wiki/MIDI_tuning_standard
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return pow(2.0, (note - 69) / 12.0) * PITCH_STANDARD_A;
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}
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bool process_audio(uint16_t keycode, keyrecord_t *record) {
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if (keycode == AU_ON && record->event.pressed) {
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audio_on();
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return false;
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}
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if (keycode == AU_OFF && record->event.pressed) {
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audio_off();
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return false;
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}
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if (keycode == AU_TOG && record->event.pressed) {
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if (is_audio_on()) {
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audio_off();
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} else {
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audio_on();
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}
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return false;
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}
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if (keycode == MUV_IN && record->event.pressed) {
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voice_iterate();
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PLAY_SONG(voice_change_song);
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return false;
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}
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if (keycode == MUV_DE && record->event.pressed) {
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voice_deiterate();
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PLAY_SONG(voice_change_song);
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return false;
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}
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return true;
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}
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void process_audio_noteon(uint8_t note) { play_note(compute_freq_for_midi_note(note), 0xF); }
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void process_audio_noteoff(uint8_t note) { stop_note(compute_freq_for_midi_note(note)); }
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void process_audio_all_notes_off(void) { stop_all_notes(); }
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__attribute__((weak)) void audio_on_user() {}
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__attribute__((weak)) void audio_off_user() {}
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