decoder: terminate decoder thread before MPD cleanup

src/decoder_control.c

@@ -100,3 +100,10 @@ dc_seek(struct notify *notify, double where)
 
 	return true;
 }
+
+void
+dc_quit(struct notify *notify)
+{
+	dc.quit = true;
+	dc_command(notify, DECODE_COMMAND_STOP);
+}

src/decoder_control.h

@@ -49,6 +49,7 @@ struct decoder_control {
 
 	volatile enum decoder_state state;
 	volatile enum decoder_command command;
+	bool quit;
 	bool seek_error;
 	bool seekable;
 	volatile double seek_where;
@@ -122,4 +123,7 @@ dc_stop(struct notify *notify);
 bool
 dc_seek(struct notify *notify, double where);
 
+void
+dc_quit(struct notify *notify);
+
 #endif

src/decoder_thread.c

@@ -204,7 +204,7 @@ static void decoder_run(void)
 
 static void * decoder_task(G_GNUC_UNUSED void *arg)
 {
-	while (1) {
+	do {
 		assert(dc.state == DECODE_STATE_STOP ||
 		       dc.state == DECODE_STATE_ERROR);
 
@@ -226,7 +226,7 @@ static void * decoder_task(G_GNUC_UNUSED void *arg)
 			notify_wait(&dc.notify);
 			break;
 		}
-	}
+	} while (dc.command != DECODE_COMMAND_NONE || !dc.quit);
 
 	return NULL;
 }

src/player_thread.c

@@ -514,6 +514,7 @@ static void * player_task(G_GNUC_UNUSED void *arg)
 			break;
 
 		case PLAYER_COMMAND_EXIT:
+			dc_quit(&pc.notify);
 			closeAudioDevice();
 			player_command_finished();
 			pthread_exit(NULL);