Ganesh: images upload to GPU performance fix (skip copying encoded data)

third_party/WebKit/Source/platform/graphics/ImageFrameGenerator.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ImageFrameGenerator_h
 #define ImageFrameGenerator_h
 
 #include "SkBitmap.h"
+#include "SkData.h"
 #include "SkSize.h"
 #include "SkTypes.h"
 #include "platform/PlatformExport.h"
 #include "platform/graphics/ThreadSafeDataTransport.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadingPrimitives.h"
 #include "wtf/ThreadSafeRefCounted.h"
@@ skipping 28 matching lines @@
     // into |pixels| with a stride of |rowBytes|.
     //
     // Returns true if decoding was successful.
     bool decodeAndScale(const SkImageInfo&, size_t index, void* pixels, size_t rowBytes);
 
     // Decodes YUV components directly into the provided memory planes.
     bool decodeToYUV(SkISize componentSizes[3], void* planes[3], size_t rowBytes[3]);
 
     void setData(PassRefPtr<SharedBuffer>, bool allDataReceived);
 
-    // Creates a new SharedBuffer containing the data received so far.
-    void copyData(RefPtr<SharedBuffer>*, bool* allDataReceived);
+    // Returns pointer to SkData. Caller needs to unref it, according to contract in
+    // SkImageGenerator::refEncodedData.
+    SkData* refSkData();
 
     SkISize getFullSize() const { return m_fullSize; }
 
     bool isMultiFrame() const { return m_isMultiFrame; }
 
     // FIXME: Return alpha state for each frame.
     bool hasAlpha(size_t);
 
     bool getYUVComponentSizes(SkISize componentSizes[3]);
 
@@ skipping 28 matching lines @@
     // Prevents multiple decode operations on the same data.
     Mutex m_decodeMutex;
 
     // Protect concurrent access to m_hasAlpha.
     Mutex m_alphaMutex;
 };
 
 } // namespace blink
 
 #endif