[TESTING] Close ctrl device after init for piped mode

Fixes volume keys when using patched hidapi, see
duncanthrax#3 (comment)

src/hid.c

@@ -59,6 +59,11 @@ int rv_open_device() {
 	return -1;
 }
 
+void rv_close_ctrl_device() {
+	rv_printf(RV_LOG_NORMAL, "close");
+	hid_close(ctrl_handle);
+}
+
 int rv_wait_for_ctrl_device() {
 	unsigned char buffer[] = { 0x04, 0x00, 0x00, 0x00 };
 	int res;

src/roccat-vulcan.c

@@ -199,6 +199,8 @@ int main(int argc, char* argv[])
 					return RV_FAILURE;
 				};
 
+				rv_close_ctrl_device();
+
 				return rv_fx_piped(file_name);
 			}
 			else if (fx_mode == FX_MODE_TEST_LOOP) {

src/roccat-vulcan.h

@@ -56,6 +56,7 @@ int rv_get_ctrl_report(unsigned char report_id);
 int rv_set_ctrl_report(unsigned char report_id, int mode, int byteopt);
 int rv_send_led_map(rv_rgb_map *map);
 int rv_send_init(int type, int opt);
+void rv_close_ctrl_device();
 
 // Logging I/O functions (output.c)
 void rv_print_buffer(unsigned char *buffer, int len);