third_party/WebKit/Source/web/WebImageDecoder.cpp

   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 "public/web/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 namespace blink {
  46
  47 void WebImageDecoder::reset()
  48 {
  49     delete m_private;
  50 }
  51
  52 void WebImageDecoder::init(Type type)
  53 {
  54     size_t maxDecodedBytes = Platform::current()->maxDecodedImageBytes();
  55
  56     switch (type) {
  57     case TypeBMP:
  58         m_private = new BMPImageDecoder(ImageDecoder::AlphaPremultiplied, ImageDecoder::GammaAndColorProfileApplied, maxDecodedBytes);
  59         break;
  60     case TypeICO:
  61         m_private = new ICOImageDecoder(ImageDecoder::AlphaPremultiplied, ImageDecoder::GammaAndColorProfileApplied, maxDecodedBytes);
  62         break;
  63     }
  64 }
  65
  66 void WebImageDecoder::setData(const WebData& data, bool allDataReceived)
  67 {
  68     ASSERT(m_private);
  69     m_private->setData(PassRefPtr<SharedBuffer>(data).get(), allDataReceived);
  70 }
  71
  72 bool WebImageDecoder::isFailed() const
  73 {
  74     ASSERT(m_private);
  75     return m_private->failed();
  76 }
  77
  78 bool WebImageDecoder::isSizeAvailable() const
  79 {
  80     ASSERT(m_private);
  81     return m_private->isSizeAvailable();
  82 }
  83
  84 WebSize WebImageDecoder::size() const
  85 {
  86     ASSERT(m_private);
  87     return m_private->size();
  88 }
  89
  90 size_t WebImageDecoder::frameCount() const
  91 {
  92     ASSERT(m_private);
  93     return m_private->frameCount();
  94 }
  95
  96 bool WebImageDecoder::isFrameCompleteAtIndex(int index) const
  97 {
  98     ASSERT(m_private);
  99     ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
 100     if (!frameBuffer)
 101         return false;
 102     return frameBuffer->status() == ImageFrame::FrameComplete;
 103 }
 104
 105 WebImage WebImageDecoder::getFrameAtIndex(int index = 0) const
 106 {
 107     ASSERT(m_private);
 108     ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
 109     if (!frameBuffer)
 110         return WebImage();
 111     return WebImage(frameBuffer->bitmap());
 112 }
 113
 114 } // namespace blink