62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#include "audio.h"
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#include "process_audio.h"
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static float compute_freq_for_midi_note(uint8_t note)
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{
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// https://en.wikipedia.org/wiki/MIDI_tuning_standard
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return pow(2.0, (note - 69) / 12.0) * 440.0f;
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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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{
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audio_off();
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}
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else
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{
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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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music_scale_user();
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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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music_scale_user();
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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) {
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play_note(compute_freq_for_midi_note(note), 0xF);
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}
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void process_audio_noteoff(uint8_t note) {
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stop_note(compute_freq_for_midi_note(note));
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}
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void process_audio_all_notes_off(void) {
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stop_all_notes();
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}
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__attribute__ ((weak))
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void audio_on_user() {} |