Replace RectVectors with SkRegions in Decoder.

remoting/base/decoder_vp8.h

 // Copyright (c) 2011 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 REMOTING_BASE_DECODER_VP8_H_
 #define REMOTING_BASE_DECODER_VP8_H_
 
 #include "remoting/base/decoder.h"
 
 typedef struct vpx_codec_ctx vpx_codec_ctx_t;
 typedef struct vpx_image vpx_image_t;
 
 namespace remoting {
 
 class DecoderVp8 : public Decoder {
  public:
   DecoderVp8();
   virtual ~DecoderVp8();
 
   // Decoder implementations.
   virtual void Initialize(scoped_refptr<media::VideoFrame> frame) OVERRIDE;
   virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE;
-  virtual void GetUpdatedRects(RectVector* rects) OVERRIDE;
+  virtual void GetUpdatedRegion(SkRegion* region) OVERRIDE;
   virtual bool IsReadyForData() OVERRIDE;
   virtual void Reset() OVERRIDE;
   virtual VideoPacketFormat::Encoding Encoding() OVERRIDE;
   virtual void SetOutputSize(const SkISize& size) OVERRIDE;
   virtual void SetClipRect(const SkIRect& clip_rect) OVERRIDE;
-  virtual void RefreshRects(const RectVector& rects) OVERRIDE;
+  virtual void RefreshRegion(const SkRegion& region) OVERRIDE;
 
  private:
   enum State {
     kUninitialized,
     kReady,
     kError,
   };
 
   // Return true if scaling is enabled
   bool DoScaling() const;
 
-  // Perform color space conversion on the specified rectangles.
-  // Write the updated rectangles to |output_rects|.
-  void ConvertRects(const RectVector& rects,
-                    RectVector* output_rects);
+  // Perform color space conversion on the specified region.
+  // Writes the updated region to |output_region|.
+  void ConvertRegion(const SkRegion& region,
+                     SkRegion* output_region);
 
   // Perform scaling and color space conversion on the specified
-  // rectangles.
-  // Write the updated rectangles to |output_rects|.
-  void ScaleAndConvertRects(const RectVector& rects,
-                            RectVector* output_rects);
+  // region.  Writes the updated rectangles to |output_region|.
+  void ScaleAndConvertRegion(const SkRegion& region,
+                             SkRegion* output_region);
 
   // The internal state of the decoder.
   State state_;
 
   // The video frame to write to.
   scoped_refptr<media::VideoFrame> frame_;
 
   vpx_codec_ctx_t* codec_;
 
   // Pointer to the last decoded image.
   vpx_image_t* last_image_;
 
-  // Record the updated rects in the last decode.
-  RectVector updated_rects_;
+  // The region updated by the most recent decode.
+  SkRegion updated_region_;
 
   // Clipping rect for the output of the decoder.
   SkIRect clip_rect_;
 
   // Output dimensions.
   SkISize output_size_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderVp8);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_BASE_DECODER_VP8_H_