Hook up plumbing for minification/magnification filters.

ui/accelerated_widget_mac/ca_renderer_layer_tree.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_ACCELERATED_WIDGET_MAC_CA_RENDERER_LAYER_TREE_H_
 #define UI_ACCELERATED_WIDGET_MAC_CA_RENDERER_LAYER_TREE_H_
 
 #include <IOSurface/IOSurface.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 30 matching lines @@
   bool ScheduleCALayer(bool is_clipped,
                        const gfx::Rect& clip_rect,
                        unsigned sorting_context_id,
                        const gfx::Transform& transform,
                        base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
                        base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer,
                        const gfx::RectF& contents_rect,
                        const gfx::Rect& rect,
                        unsigned background_color,
                        unsigned edge_aa_mask,
-                       float opacity);
+                       float opacity,
+                       unsigned filter);
 
   // Create a CALayer tree for the scheduled layers, and set |superlayer| to
   // have only this tree as its sublayers. If |old_tree| is non-null, then try
   // to re-use the CALayers of |old_tree| as much as possible. |old_tree| will
   // be destroyed at the end of the function, and any CALayers in it which were
   // not re-used by |this| will be removed from the CALayer hierarchy.
   void CommitScheduledCALayers(CALayer* superlayer,
                                std::unique_ptr<CARendererLayerTree> old_tree,
                                float scale_factor);
 
@@ skipping 23 matching lines @@
         bool is_clipped,
         const gfx::Rect& clip_rect,
         unsigned sorting_context_id,
         const gfx::Transform& transform,
         base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
         base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer,
         const gfx::RectF& contents_rect,
         const gfx::Rect& rect,
         unsigned background_color,
         unsigned edge_aa_mask,
-        float opacity);
+        float opacity,
+        unsigned filter);
 
     // Allocate CALayers for this layer and its children, and set their
     // properties appropriately. Re-use the CALayers from |old_layer| if
     // possible. If re-using a CALayer from |old_layer|, reset its |ca_layer|
     // to nil, so that its destructor will not remove an active CALayer.
     void CommitToCA(CALayer* superlayer,
                     RootLayer* old_layer,
                     float scale_factor);
 
     std::vector<ClipAndSortingLayer> clip_and_sorting_layers;
@@ skipping 13 matching lines @@
     // |ca_layer| member and |old_layer| argument.
     ~ClipAndSortingLayer();
     void AddContentLayer(
         const gfx::Transform& transform,
         base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
         base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer,
         const gfx::RectF& contents_rect,
         const gfx::Rect& rect,
         unsigned background_color,
         unsigned edge_aa_mask,
-        float opacity);
+        float opacity,
+        unsigned filter);
     void CommitToCA(CALayer* superlayer,
                     ClipAndSortingLayer* old_layer,
                     float scale_factor);
 
     std::vector<TransformLayer> transform_layers;
     bool is_clipped = false;
     gfx::Rect clip_rect;
     unsigned sorting_context_id = 0;
     bool is_singleton_sorting_context = false;
     base::scoped_nsobject<CALayer> ca_layer;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(ClipAndSortingLayer);
   };
   struct TransformLayer {
     TransformLayer(const gfx::Transform& transform);
     TransformLayer(TransformLayer&& layer);
 
     // See the behavior of RootLayer for the effects of these functions on the
     // |ca_layer| member and |old_layer| argument.
     ~TransformLayer();
     void AddContentLayer(
         base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
         base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer,
         const gfx::RectF& contents_rect,
         const gfx::Rect& rect,
         unsigned background_color,
         unsigned edge_aa_mask,
-        float opacity);
+        float opacity,
+        unsigned filter);
     void CommitToCA(CALayer* superlayer,
                     TransformLayer* old_layer,
                     float scale_factor);
 
     gfx::Transform transform;
     std::vector<ContentLayer> content_layers;
     base::scoped_nsobject<CALayer> ca_layer;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(TransformLayer);
   };
   struct ContentLayer {
     ContentLayer(base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
                  base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer,
                  const gfx::RectF& contents_rect,
                  const gfx::Rect& rect,
                  unsigned background_color,
                  unsigned edge_aa_mask,
-                 float opacity);
+                 float opacity,
+                 unsigned filter);
     ContentLayer(ContentLayer&& layer);
 
     // See the behavior of RootLayer for the effects of these functions on the
     // |ca_layer| member and |old_layer| argument.
     ~ContentLayer();
     void CommitToCA(CALayer* parent,
                     ContentLayer* old_layer,
                     float scale_factor);
 
     // Ensure that the IOSurface be marked as in-use as soon as it is received.
     // When they are committed to the window server, that will also increment
     // their use count.
     const gfx::ScopedInUseIOSurface io_surface;
     const base::ScopedCFTypeRef<CVPixelBufferRef> cv_pixel_buffer;
     gfx::RectF contents_rect;
     gfx::Rect rect;
     unsigned background_color = 0;
     // Note that the CoreAnimation edge antialiasing mask is not the same as
     // the edge antialiasing mask passed to the constructor.
     CAEdgeAntialiasingMask ca_edge_aa_mask = 0;
     float opacity = 1;
+    base::scoped_nsobject<NSString> ca_filter;

[ccameron, 2016/04/27 22:45:48]

I'd be inclined to leave this just as NSString* const instead of doing all of
this alloc/free.

[erikchen, 2016/04/28 01:18:21]

Done.

     base::scoped_nsobject<CALayer> ca_layer;
 
     // If this layer's contents can be represented as an
     // AVSampleBufferDisplayLayer, then |ca_layer| will point to |av_layer|.
     base::scoped_nsobject<AVSampleBufferDisplayLayer> av_layer;
     bool use_av_layer = false;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(ContentLayer);
   };
 
   RootLayer root_layer_;
   float scale_factor_ = 1;
   bool has_committed_ = false;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CARendererLayerTree);
 };
 
 }  // namespace ui
 
 #endif  // UI_ACCELERATED_WIDGET_MAC_CA_LAYER_TREE_MAC_H_