add NoteOff to keyjazz

Author: m-hayabusa

input.c

@@ -91,7 +91,7 @@ void close_game_controllers() {
 }
 
 static input_msg_s handle_keyjazz(SDL_Event *event, uint8_t keyvalue) {
-  input_msg_s key = {keyjazz, keyvalue};
+  input_msg_s key = {keyjazz, keyvalue, event->type};
   switch (event->key.keysym.scancode) {
   case SDL_SCANCODE_Z:
     key.value = keyjazz_base_octave * 12;

input.h

@@ -32,6 +32,7 @@ typedef enum special_messages_t {
 typedef struct input_msg_s {
   input_type_t type;
   uint8_t value;
+  uint32_t eventType;
 } input_msg_s;
 
 void close_game_controllers();

main.c

@@ -72,6 +72,7 @@ int main(int argc, char *argv[]) {
   #endif
 
   uint8_t prev_input = 0;
+  uint8_t prev_note = 0;
 
   // main loop
   while (run) {
@@ -87,14 +88,15 @@ int main(int argc, char *argv[]) {
       }
       break;
     case keyjazz:
-      if (input.value != prev_input) {
-        prev_input = input.value;
-        if (input.value != 0) {
+      if (input.value != 0) {
+        if (input.eventType == SDL_KEYDOWN && input.value != prev_input) {
           send_msg_keyjazz(port, input.value, 0xFF);
-        } else {
-          send_msg_keyjazz(port, 0, 0);
+          prev_note = input.value;
+        } else if (input.eventType == SDL_KEYUP && input.value == prev_note) {
+          send_msg_keyjazz(port, 0xFF, 0);
         }
       }
+      prev_input = input.value;
       break;
     case special:
       if (input.value != prev_input) {