Non DCTSIZE multiple width support for JPEG YUV decoding

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
@@ skipping 54 matching lines @@
     ~ImageFrameGenerator();
 
     // Decodes and scales the specified frame indicated by |index|. Dimensions
     // and output format are specified in |info|. Decoded pixels are written
     // 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(void* planes[3], size_t rowBytes[3]);
+    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);
 
     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]);
 
 private:
     class ExternalMemoryAllocator;
     friend class ImageFrameGeneratorTest;
     friend class DeferredImageDecoderTest;
     // For testing. |factory| will overwrite the default ImageDecoder creation logic if |factory->create()| returns non-zero.
     void setImageDecoderFactory(PassOwnPtr<ImageDecoderFactory> factory) { m_imageDecoderFactory = factory; }
 
     void setHasAlpha(size_t index, bool hasAlpha);
 
+    void getYUVComponentSizes(const ImageDecoder*, SkISize componentSizes[3], bool memoryAllocation);
+
     // These methods are called while m_decodeMutex is locked.
     SkBitmap tryToResumeDecode(const SkISize& scaledSize, size_t index);
 
     // Use the given decoder to decode. If a decoder is not given then try to create one.
     // Returns true if decoding was complete.
     bool decode(size_t index, ImageDecoder**, SkBitmap*);
 
     SkISize m_fullSize;
     ThreadSafeDataTransport m_data;
     bool m_isMultiFrame;
     bool m_decodeFailedAndEmpty;
     Vector<bool> m_hasAlpha;
     int m_decodeCount;
     OwnPtr<ExternalMemoryAllocator> m_externalAllocator;
 
     OwnPtr<ImageDecoderFactory> m_imageDecoderFactory;
 
     // Prevents multiple decode operations on the same data.
     Mutex m_decodeMutex;
 
     // Protect concurrent access to m_hasAlpha.
     Mutex m_alphaMutex;
 };
 
 } // namespace blink
 
 #endif