/*
 * Copyright (C) 2010 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER 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.
 */

#include "public/web/WebImageDecoder.h"

#include "platform/SharedBuffer.h"
#include "platform/image-decoders/bmp/BMPImageDecoder.h"
#include "platform/image-decoders/ico/ICOImageDecoder.h"
#include "public/platform/Platform.h"
#include "public/platform/WebData.h"
#include "public/platform/WebImage.h"
#include "public/platform/WebSize.h"
#include "wtf/PassRefPtr.h"

namespace blink {

void WebImageDecoder::reset() {
  delete m_private;
}

void WebImageDecoder::init(Type type) {
  size_t maxDecodedBytes = Platform::current()->maxDecodedImageBytes();

  switch (type) {
    case TypeBMP:
      m_private =
          new BMPImageDecoder(ImageDecoder::AlphaPremultiplied,
                              ImageDecoder::ColorSpaceApplied, maxDecodedBytes);
      break;
    case TypeICO:
      m_private =
          new ICOImageDecoder(ImageDecoder::AlphaPremultiplied,
                              ImageDecoder::ColorSpaceApplied, maxDecodedBytes);
      break;
  }
}

void WebImageDecoder::setData(const WebData& data, bool allDataReceived) {
  DCHECK(m_private);
  m_private->setData(PassRefPtr<SharedBuffer>(data).get(), allDataReceived);
}

bool WebImageDecoder::isFailed() const {
  DCHECK(m_private);
  return m_private->failed();
}

bool WebImageDecoder::isSizeAvailable() const {
  DCHECK(m_private);
  return m_private->isSizeAvailable();
}

WebSize WebImageDecoder::size() const {
  DCHECK(m_private);
  return m_private->size();
}

size_t WebImageDecoder::frameCount() const {
  DCHECK(m_private);
  return m_private->frameCount();
}

bool WebImageDecoder::isFrameCompleteAtIndex(int index) const {
  DCHECK(m_private);
  ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
  if (!frameBuffer)
    return false;
  return frameBuffer->getStatus() == ImageFrame::FrameComplete;
}

WebImage WebImageDecoder::getFrameAtIndex(int index = 0) const {
  DCHECK(m_private);
  ImageFrame* const frameBuffer = m_private->frameBufferAtIndex(index);
  if (!frameBuffer)
    return WebImage();
  return WebImage(frameBuffer->bitmap());
}

}  // namespace blink