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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "WebImageDecoder.h"
     33 
     34 #include "platform/SharedBuffer.h"
     35 #include "platform/image-decoders/bmp/BMPImageDecoder.h"
     36 #include "platform/image-decoders/ico/ICOImageDecoder.h"
     37 #include "public/platform/Platform.h"
     38 #include "public/platform/WebData.h"
     39 #include "public/platform/WebImage.h"
     40 #include "public/platform/WebSize.h"
     41 #include "wtf/OwnPtr.h"
     42 #include "wtf/PassOwnPtr.h"
     43 #include "wtf/PassRefPtr.h"
     44 
     45 using namespace WebCore;
     46 
     47 namespace blink {
     48 
     49 void WebImageDecoder::reset()
     50 {
     51     delete m_private;
     52 }
     53 
     54 void WebImageDecoder::init(Type type)
     55 {
     56     size_t maxDecodedBytes = blink::Platform::current()->maxDecodedImageBytes();
     57 
     58     switch (type) {
     59     case TypeBMP:
     60         m_private = new BMPImageDecoder(ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied, maxDecodedBytes);
     61         break;
     62     case TypeICO:
     63         m_private = new ICOImageDecoder(ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied, maxDecodedBytes);
     64         break;
     65     }
     66 }
     67 
     68 void WebImageDecoder::setData(const WebData& data, bool allDataReceived)
     69 {
     70     ASSERT(m_private);
     71     m_private->setData(PassRefPtr<SharedBuffer>(data).get(), allDataReceived);
     72 }
     73 
     74 bool WebImageDecoder::isFailed() const
     75 {
     76     ASSERT(m_private);
     77     return m_private->failed();
     78 }
     79 
     80 bool WebImageDecoder::isSizeAvailable() const
     81 {
     82     ASSERT(m_private);
     83     return m_private->isSizeAvailable();
     84 }
     85 
     86 WebSize WebImageDecoder::size() const
     87 {
     88     ASSERT(m_private);
     89     return m_private->size();
     90 }
     91 
     92 size_t WebImageDecoder::frameCount() const
     93 {
     94     ASSERT(m_private);
     95     return m_private->frameCount();
     96 }
     97 
     98 bool WebImageDecoder::isFrameCompleteAtIndex(int index) const
     99 {
    100     ASSERT(m_private);
    101     ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
    102     if (!frameBuffer)
    103         return false;
    104     return frameBuffer->status() == ImageFrame::FrameComplete;
    105 }
    106 
    107 WebImage WebImageDecoder::getFrameAtIndex(int index = 0) const
    108 {
    109     ASSERT(m_private);
    110     ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
    111     if (!frameBuffer)
    112         return WebImage();
    113     RefPtr<NativeImageSkia> image = frameBuffer->asNewNativeImage();
    114     return WebImage(image->bitmap());
    115 }
    116 
    117 } // namespace blink
    118