[PATCH 3/3] add resize filter interface support

[Zhao Halley]

---
 src/compositor.c |   57 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/compositor.h |    1 +
 2 files changed, 57 insertions(+), 1 deletions(-)

diff --git a/src/compositor.c b/src/compositor.c
index a768ba6..365cc39 100755
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -251,6 +251,8 @@ weston_surface_create(struct weston_compositor *compositor)
 	weston_matrix_init(&surface->transform.position.matrix);
 	pixman_region32_init(&surface->transform.boundingbox);
 	surface->geometry.dirty = 1;
+    surface->min_filter = WL_SURFACE_RESIZE_SAMPLING_LINEAR;
+    surface->mag_filter = WL_SURFACE_RESIZE_SAMPLING_LINEAR;
 
 	return surface;
 }
@@ -1471,6 +1473,56 @@ surface_set_input_region(struct wl_client *client,
 	weston_compositor_schedule_repaint(surface->compositor);
 }
 
+static void
+surface_get_render_attr_caps(struct wl_client *client,
+			 struct wl_resource *resource, uint32_t attr_type, uint32_t *attr_values) 
+{
+    switch (attr_type) {
+    case WL_SURFACE_RESIZE_FILTER_MAG:
+    case WL_SURFACE_RESIZE_FILTER_MIN:
+        *attr_values = WL_SURFACE_RESIZE_SAMPLING_NEAREST | WL_SURFACE_RESIZE_SAMPLING_LINEAR;        
+        break;
+    default:
+        *attr_values = 0;
+        break;
+    }
+}
+
+static void
+surface_get_render_attr(struct wl_client *client,
+			 struct wl_resource *resource, uint32_t attr_type, uint32_t *attr_value) 
+{
+	struct weston_surface *surface = resource->data;
+    switch (attr_type) {
+    case WL_SURFACE_RESIZE_FILTER_MAG:
+        *attr_value = surface->mag_filter;        
+        break;
+    case WL_SURFACE_RESIZE_FILTER_MIN:
+        *attr_value = surface->min_filter;        
+        break;
+    default:
+        *attr_value = 0;
+        break;
+    }
+}
+
+static void
+surface_set_render_attr(struct wl_client *client,
+			 struct wl_resource *resource, uint32_t attr_type, uint32_t attr_value) 
+{
+	struct weston_surface *surface = resource->data;
+    switch (attr_type) {
+    case WL_SURFACE_RESIZE_FILTER_MAG:
+        surface->mag_filter = attr_value;        
+        break;
+    case WL_SURFACE_RESIZE_FILTER_MIN:
+        surface->min_filter = attr_value;        
+        break;
+    default:
+        break;
+    }
+}
+
 static const struct wl_surface_interface surface_interface = {
 	surface_destroy,
 	surface_attach,
@@ -1478,7 +1530,10 @@ static const struct wl_surface_interface surface_interface = {
 	surface_damage,
 	surface_frame,
 	surface_set_opaque_region,
-	surface_set_input_region
+	surface_set_input_region,
+	surface_get_render_attr_caps,
+	surface_set_render_attr,
+	surface_get_render_attr,
 };
 
 static void
diff --git a/src/compositor.h b/src/compositor.h
index 14747f6..4702059 100755
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -400,6 +400,7 @@ struct weston_surface {
 	 * are the sx and sy paramerters supplied to surface::attach .
 	 */
 	void (*configure)(struct weston_surface *es, int32_t sx, int32_t sy);
+    enum wl_surface_resize_sampling min_filter, mag_filter;
 	void *private;
 };
 
-- 
1.7.5.4