feat: auto-reconnect midi

src/forge.c

@@ -181,12 +181,12 @@ static void key_callback(Window *window, int key,
     log_info("[ESC] Closing...");
     window_close(window);
   } else if (event > 0) {
-    state_key_event(&context, project.state_config, event, &midi);
+    state_key_event(&context, project.state_config, event, midi);
   }
 }
 
 static void midi_callback(unsigned char code, unsigned char value) {
-  state_midi_event(&context, project.state_config, &midi, code, value,
+  state_midi_event(&context, project.state_config, midi, code, value,
                    init_params.trace_midi);
 }
 
@@ -214,6 +214,35 @@ static void start_midi_background_listen() {
   pthread_detach(thread);
 }
 
+static void *background_reconnect_midi(__attribute__((unused)) void *args) {
+  log_info("background midi reconnect started");
+  while (!context.stop) {
+    sleep(1);
+    if (!midi.connected) {
+      midi_open(&midi, config_file_get_str(&project.config, "MIDI_HW", "hw"));
+      if (midi.connected) {
+        start_midi_background_listen();
+      }
+    }
+  }
+  pthread_exit(NULL);
+}
+
+static void init_midi() {
+  pthread_t thread;
+
+  midi_open(&midi, config_file_get_str(&project.config, "MIDI_HW", "hw"));
+
+  if (midi.connected) {
+    start_midi_background_listen();
+  }
+
+  if (init_params.midi_reconnect) {
+    pthread_create(&thread, NULL, background_reconnect_midi, NULL);
+    pthread_detach(thread);
+  }
+}
+
 static bool init(const Parameters *params) {
   init_params = *params;
 
@@ -231,13 +260,7 @@ static bool init(const Parameters *params) {
   start_video_captures();
 #endif /* VIDEO_IN */
 
-  midi_open(&midi, config_file_get_str(&project.config, "MIDI_HW", "hw"));
-
-  if (midi.error) {
-    context.demo = true;
-  } else {
-    start_midi_background_listen();
-  }
+  init_midi();
 
   start_state_background_write();
 
@@ -357,6 +380,8 @@ static void shutdown() {
   free_video_captures();
 #endif /* VIDEO_IN */
 
+  midi_close(&midi);
+
   project_free(&project);
 
   window_terminate();