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-rw-r--r--quantum/process_keycode/process_audio.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/quantum/process_keycode/process_audio.c b/quantum/process_keycode/process_audio.c
new file mode 100644
index 0000000000..0b6380ed39
--- /dev/null
+++ b/quantum/process_keycode/process_audio.c
@@ -0,0 +1,62 @@
+#include "audio.h"
+#include "process_audio.h"
+
+static float compute_freq_for_midi_note(uint8_t note)
+{
+ // https://en.wikipedia.org/wiki/MIDI_tuning_standard
+ return pow(2.0, (note - 69) / 12.0) * 440.0f;
+}
+
+bool process_audio(uint16_t keycode, keyrecord_t *record) {
+
+ if (keycode == AU_ON && record->event.pressed) {
+ audio_on();
+ return false;
+ }
+
+ if (keycode == AU_OFF && record->event.pressed) {
+ audio_off();
+ return false;
+ }
+
+ if (keycode == AU_TOG && record->event.pressed) {
+ if (is_audio_on())
+ {
+ audio_off();
+ }
+ else
+ {
+ audio_on();
+ }
+ return false;
+ }
+
+ if (keycode == MUV_IN && record->event.pressed) {
+ voice_iterate();
+ music_scale_user();
+ return false;
+ }
+
+ if (keycode == MUV_DE && record->event.pressed) {
+ voice_deiterate();
+ music_scale_user();
+ return false;
+ }
+
+ return true;
+}
+
+void process_audio_noteon(uint8_t note) {
+ play_note(compute_freq_for_midi_note(note), 0xF);
+}
+
+void process_audio_noteoff(uint8_t note) {
+ stop_note(compute_freq_for_midi_note(note));
+}
+
+void process_audio_all_notes_off(void) {
+ stop_all_notes();
+}
+
+__attribute__ ((weak))
+void audio_on_user() {} \ No newline at end of file