Refactor ImageDecoder factories

third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.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 29 matching lines @@
 namespace blink {
 
 class ImageFrameGenerator;
 class SharedBuffer;
 struct DeferredFrameData;
 
 class PLATFORM_EXPORT DeferredImageDecoder final {
     WTF_MAKE_NONCOPYABLE(DeferredImageDecoder);
     USING_FAST_MALLOC(DeferredImageDecoder);
 public:
-    static std::unique_ptr<DeferredImageDecoder> create(ImageDecoder::SniffResult, ImageDecoder::AlphaOption, ImageDecoder::GammaAndColorProfileOption);
+    static std::unique_ptr<DeferredImageDecoder> create(PassRefPtr<SharedBuffer> data, bool dataComplete,
+        ImageDecoder::AlphaOption, ImageDecoder::GammaAndColorProfileOption);
 
     static std::unique_ptr<DeferredImageDecoder> createForTesting(std::unique_ptr<ImageDecoder>);
 
     ~DeferredImageDecoder();
 
     String filenameExtension() const;
 
     PassRefPtr<SkImage> createFrameAtIndex(size_t);
 
     PassRefPtr<SharedBuffer> data();
-    void setData(SharedBuffer& data, bool allDataReceived);
+    void setData(PassRefPtr<SharedBuffer> data, bool allDataReceived);
 
     bool isSizeAvailable();
     bool hasColorProfile() const;
     IntSize size() const;
     IntSize frameSizeAtIndex(size_t index) const;
     size_t frameCount();
     int repetitionCount() const;
     size_t clearCacheExceptFrame(size_t index);
     bool frameHasAlphaAtIndex(size_t index) const;
     bool frameIsCompleteAtIndex(size_t index) const;
     float frameDurationAtIndex(size_t index) const;
     size_t frameBytesAtIndex(size_t index) const;
     ImageOrientation orientationAtIndex(size_t index) const;
     bool hotSpot(IntPoint&) const;
 
 private:
     explicit DeferredImageDecoder(std::unique_ptr<ImageDecoder> actualDecoder);
 
     friend class DeferredImageDecoderTest;
     ImageFrameGenerator* frameGenerator() { return m_frameGenerator.get(); }
 
     void activateLazyDecoding();
     void prepareLazyDecodedFrames();
 
     PassRefPtr<SkImage> createFrameImageAtIndex(size_t index, bool knownToBeOpaque);
 
+    void setDataInternal(PassRefPtr<SharedBuffer> data, bool allDataReceived, bool pushDataToDecoder);
+
     // Copy of the data that is passed in, used by deferred decoding.
     // Allows creating readonly snapshots that may be read in another thread.
     std::unique_ptr<SkRWBuffer> m_rwBuffer;
     bool m_allDataReceived;
     std::unique_ptr<ImageDecoder> m_actualDecoder;
 
     String m_filenameExtension;
     IntSize m_size;
     int m_repetitionCount;
     bool m_hasColorProfile;
     bool m_canYUVDecode;
     bool m_hasHotSpot;
     IntPoint m_hotSpot;
 
     // Caches frame state information.
     Vector<DeferredFrameData> m_frameData;
     RefPtr<ImageFrameGenerator> m_frameGenerator;
 };
 
 } // namespace blink
 
 #endif