3 files changed, 6 insertions, 2 deletions
diff --git a/include/wlr/backend/headless.h b/include/wlr/backend/headless.h
index 475c2f6c..245a65dc 100644
--- a/include/wlr/backend/headless.h
+++ b/include/wlr/backend/headless.h
@@ -9,5 +9,6 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *backend,
 	unsigned int width, unsigned int height);
 struct wlr_input_device *wlr_headless_add_input(struct wlr_backend *backend,
 	enum wlr_input_device_type type);
+bool wlr_backend_is_headless(struct wlr_backend *backend);
 
 #endif
diff --git a/include/wlr/interfaces/wlr_output.h b/include/wlr/interfaces/wlr_output.h
index 1cfe7568..6d71f9b6 100644
--- a/include/wlr/interfaces/wlr_output.h
+++ b/include/wlr/interfaces/wlr_output.h
@@ -28,8 +28,10 @@ struct wlr_output_impl {
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
 	const struct wlr_output_impl *impl);
 void wlr_output_free(struct wlr_output *output);
-void wlr_output_update_size(struct wlr_output *output, int32_t width,
-	int32_t height);
+void wlr_output_update_mode(struct wlr_output *output,
+	struct wlr_output_mode *mode);
+void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
+	int32_t height, int32_t refresh);
 struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
 	struct wl_display *display);
 void wlr_output_destroy_global(struct wlr_output *wlr_output);
diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h
index 037fa515..a974a154 100644
--- a/include/wlr/types/wlr_output.h
+++ b/include/wlr/types/wlr_output.h
@@ -47,6 +47,7 @@ struct wlr_output {
 	char serial[16];
 	float scale;
 	int32_t width, height;
+	int32_t refresh; // mHz
 	int32_t phys_width, phys_height; // mm
 	enum wl_output_subpixel subpixel;
 	enum wl_output_transform transform;