Allowing YUV data to be retrieved from the JPEG Decoder.

Source/platform/image-decoders/ImageDecoder.cpp

 /*
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 64 matching lines @@
 inline bool matchesICOSignature(char* contents)
 {
     return !memcmp(contents, "\x00\x00\x01\x00", 4);
 }
 
 inline bool matchesCURSignature(char* contents)
 {
     return !memcmp(contents, "\x00\x00\x02\x00", 4);
 }
 
+DecodingBuffers::DecodingBuffers()
+{
+    for (int i = 0; i < 3; ++i) {
+        m_planes[i] = 0;
+        m_rowBytes[i] = 0;
+    }
+}
+
+void DecodingBuffers::set(void* planes[3], size_t rowBytes[3])
+{
+    for (int i = 0; i < 3; ++i) {
+        m_planes[i] = planes[i];
+        m_rowBytes[i] = rowBytes[i];
+    }
+}
+
+void* DecodingBuffers::getPlane(int i) const
+{
+    ASSERT((i >= 0) && i < 3);
+    return m_planes[i];
+}
+
+size_t DecodingBuffers::getRowBytes(int i) const
+{
+    ASSERT((i >= 0) && i < 3);
+    return m_rowBytes[i];
+}
+
 PassOwnPtr<ImageDecoder> ImageDecoder::create(const SharedBuffer& data, ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorProfileOption)
 {
     static const unsigned longestSignatureLength = sizeof("RIFF????WEBPVP") - 1;
     ASSERT(longestSignatureLength == 14);
 
     size_t maxDecodedBytes = blink::Platform::current()->maxDecodedImageBytes();
 
     char contents[longestSignatureLength];
     if (copyFromSharedBuffer(contents, longestSignatureLength, data, 0) < longestSignatureLength)
         return nullptr;
@@ skipping 103 matching lines @@
         // Otherwise, the previous frame contributes to this frame.
         return (prevBuffer->originalFrameRect().contains(IntRect(IntPoint(), size()))
             || (prevBuffer->requiredPreviousFrameIndex() == kNotFound)) ? kNotFound : prevFrame;
     default:
         ASSERT_NOT_REACHED();
         return kNotFound;
     }
 }
 
 } // namespace blink