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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
* 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:
* 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.
*/
#include "config.h"
#if ENABLE(3D_CANVAS)
#include "GraphicsContext3D.h"
#include "Image.h"
#include "ImageSource.h"
#include "NativeImageSkia.h"
#include <algorithm>
namespace WebCore {
bool GraphicsContext3D::getImageData(Image* image,
unsigned int format,
unsigned int type,
bool premultiplyAlpha,
Vector<uint8_t>& outputVector)
{
if (!image || !image->data())
return false;
ImageSource decoder(false);
decoder.setData(image->data(), true);
if (!decoder.frameCount() || !decoder.frameIsCompleteAtIndex(0))
return false;
bool hasAlpha = decoder.frameHasAlphaAtIndex(0);
OwnPtr<NativeImageSkia> pixels(decoder.createFrameAtIndex(0));
if (!pixels.get() || !pixels->isDataComplete() || !pixels->width() || !pixels->height())
return false;
SkBitmap::Config skiaConfig = pixels->config();
if (skiaConfig != SkBitmap::kARGB_8888_Config)
return false;
SkBitmap& skiaImageRef = *pixels;
SkAutoLockPixels lock(skiaImageRef);
ASSERT(pixels->rowBytes() == pixels->width() * 4);
outputVector.resize(pixels->rowBytes() * pixels->height());
AlphaOp neededAlphaOp = kAlphaDoNothing;
if (hasAlpha && premultiplyAlpha)
neededAlphaOp = kAlphaDoPremultiply;
return packPixels(reinterpret_cast<const uint8_t*>(pixels->getPixels()),
kSourceFormatBGRA8, pixels->width(), pixels->height(), 0,
format, type, neededAlphaOp, outputVector.data());
}
} // namespace WebCore
#endif // ENABLE(3D_CANVAS)
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