Move JPEGImageDecoder to SkCodec

third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoder.h

 /*
  * Copyright (C) 2006 Apple Computer, 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 JPEGImageDecoder_h
 #define JPEGImageDecoder_h
 
+#include <memory>
+#include "third_party/skia/include/codec/SkCodec.h"
+#include "wtf/Noncopyable.h"
 #include "platform/image-decoders/ImageDecoder.h"
-#include <memory>
+#include "platform/image-decoders/SegmentStream.h"
 
 namespace blink {
 
-class JPEGImageReader;
-
 class PLATFORM_EXPORT JPEGImageDecoder final : public ImageDecoder {
   WTF_MAKE_NONCOPYABLE(JPEGImageDecoder);
 
  public:
   JPEGImageDecoder(AlphaOption, const ColorBehavior&, size_t maxDecodedBytes);
   ~JPEGImageDecoder() override;
 
   // ImageDecoder:
   String filenameExtension() const override { return "jpg"; }
   void onSetData(SegmentReader* data) override;
   IntSize decodedSize() const override { return m_decodedSize; }
   bool setSize(unsigned width, unsigned height) override;
   IntSize decodedYUVSize(int component) const override;
   size_t decodedYUVWidthBytes(int component) const override;
   bool canDecodeToYUV() override;
   bool decodeToYUV() override;
   void setImagePlanes(std::unique_ptr<ImagePlanes>) override;
   bool hasImagePlanes() const { return m_imagePlanes.get(); }
+  bool frameIsCompleteAtIndex(size_t) const override;
 
   bool outputScanlines();
   unsigned desiredScaleNumerator() const;
-  void complete();
 
   void setOrientation(ImageOrientation orientation) {
     m_orientation = orientation;
   }
   void setDecodedSize(unsigned width, unsigned height);
 
  private:
   // ImageDecoder:
-  void decodeSize() override { decode(true); }
-  void decode(size_t) override { decode(false); }
+  void decodeSize() override {}
+  void initializeNewFrame(size_t index) override;
+  void decode(size_t) override;
 
-  // Decodes the image.  If |onlySize| is true, stops decoding after
-  // calculating the image size.  If decoding fails but there is no more
-  // data coming, sets the "decode failure" flag.
-  void decode(bool onlySize);
-
-  std::unique_ptr<JPEGImageReader> m_reader;
+  std::unique_ptr<SkCodec> m_codec;
+  // m_segmentStream is a raw pointer because it passes ownership to
+  // m_codec when m_codec is created. However, we still need the
+  // pointer so we can append more data as it arrives.
+  SegmentStream* m_segmentStream;
   std::unique_ptr<ImagePlanes> m_imagePlanes;
   IntSize m_decodedSize;
 };
 
 }  // namespace blink
 
 #endif