Refactoring of the client-side input pipeline and scaling dimension management.

remoting/base/decoder.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_H_
 #define REMOTING_BASE_DECODER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 39 matching lines @@
   // Reset the decoder to an uninitialized state. Release all references to
   // the initialized |frame|.  Initialize() must be called before the decoder
   // is used again.
   virtual void Reset() = 0;
 
   // Returns true if decoder is ready to accept data via DecodePacket.
   virtual bool IsReadyForData() = 0;
 
   virtual VideoPacketFormat::Encoding Encoding() = 0;
 
-  // Set the scale factors of the decoded output. If the decoder doesn't support
-  // scaling then this all is ignored.
-  // If both |horizontal_ratio| and |vertical_ratio| equal 1.0 then scaling is
-  // turned off.
-  virtual void SetScaleRatios(double horizontal_ratio, double vertical_ratio) {}
+  // Set the output dimensions for the decoder.  If the dimensions are empty
+  // then the source is rendered without scaling.
+  // Output dimensions are ignored if the decoder doesn't support scaling.
+  virtual void SetOutputSize(const SkISize& size) {}
 
   // Set the clipping rectangle to the decoder. Decoder should respect this and
   // only output changes in this rectangle. The new clipping rectangle will be
   // effective on the next decoded video frame.
   //
   // When scaling is enabled clipping rectangles are ignored.
   virtual void SetClipRect(const SkIRect& clip_rect) {}
 
   // Force decoder to output a video frame with content in |rects| using the
-  // last decoded video frame.
-  //
-  // Coordinates of rectangles supplied here are before scaling.
+  // last decoded video frame.  |rects| are expressed in video frame rather
+  // than output coordinates.
   virtual void RefreshRects(const RectVector& rects) {}
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_BASE_DECODER_H_