Improving the decoder pipeline.

remoting/base/decoder_vp8.h

 // Copyright (c) 2012 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 void Initialize(const SkISize& screen_size) OVERRIDE;
   virtual DecodeResult DecodePacket(const VideoPacket* packet) 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 RefreshRegion(const SkRegion& region) OVERRIDE;
+  virtual void Invalidate(const SkISize& view_size,
+                          const SkRegion& region) OVERRIDE;
+  virtual void RenderFrame(const SkISize& view_size,
+                           const SkIRect& clip_area,
+                           uint8* image_buffer,
+                           int image_stride,
+                           SkRegion* output_region) OVERRIDE;
 
  private:
   enum State {
     kUninitialized,
     kReady,
     kError,
   };
 
   // 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_;
 
-  // The region updated by the most recent decode.
+  // The region updated that hasn't been copied to the screen yet.
   SkRegion updated_region_;
 
-  // Clipping rect for the output of the decoder.
-  SkIRect clip_rect_;
-
   // Output dimensions.
-  SkISize output_size_;
+  SkISize screen_size_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderVp8);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_BASE_DECODER_VP8_H_