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/*
* Copyright (C) 2010 Google, Inc.
*
* 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"
#include "ImageDecoder.h"
#include "GraphicsContextCG.h"
#include <CoreGraphics/CGColorSpace.h>
#include <CoreGraphics/CGImage.h>
namespace WebCore {
static ImageFrame::PixelData* getPtrAsPixelData(CFMutableDataRef data)
{
return data ? reinterpret_cast<ImageFrame::PixelData*>(CFDataGetMutableBytePtr(data)) : 0;
}
void ImageFrame::copyReferenceToBitmapData(const ImageFrame& other)
{
ASSERT(this != &other);
m_backingStore = other.m_backingStore;
m_bytes = getPtrAsPixelData(m_backingStore.get());
// FIXME: The rest of this function seems redundant with ImageFrame::copyBitmapData.
m_size = other.m_size;
setHasAlpha(other.m_hasAlpha);
}
bool ImageFrame::copyBitmapData(const ImageFrame& other)
{
if (this == &other)
return true;
m_backingStore.adoptCF(CFDataCreateMutableCopy(kCFAllocatorDefault, 0, other.m_backingStore.get()));
m_bytes = getPtrAsPixelData(m_backingStore.get());
m_size = other.m_size;
setHasAlpha(other.m_hasAlpha);
return true;
}
bool ImageFrame::setSize(int newWidth, int newHeight)
{
ASSERT(!m_backingStore);
size_t backingStoreSize = newWidth * newHeight * sizeof(PixelData);
CFMutableDataRef backingStoreRef = CFDataCreateMutable(kCFAllocatorDefault, backingStoreSize);
if (!backingStoreRef)
return false;
m_backingStore.adoptCF(backingStoreRef);
CFDataSetLength(backingStoreRef, backingStoreSize);
m_bytes = reinterpret_cast<PixelData*>(CFDataGetMutableBytePtr(m_backingStore.get()));
m_size = IntSize(newWidth, newHeight);
zeroFillPixelData();
return true;
}
static CGColorSpaceRef createColorSpace(const ColorProfile& colorProfile)
{
if (colorProfile.isEmpty())
return CGColorSpaceCreateDeviceRGB();
RetainPtr<CFDataRef> data(AdoptCF, CFDataCreate(kCFAllocatorDefault, reinterpret_cast<const UInt8*>(colorProfile.data()), colorProfile.size()));
#ifndef TARGETING_LEOPARD
return CGColorSpaceCreateWithICCProfile(data.get());
#else
RetainPtr<CGDataProviderRef> profileDataProvider(AdoptCF, CGDataProviderCreateWithCFData(data.get()));
CGFloat ranges[] = {0.0, 255.0, 0.0, 255.0, 0.0, 255.0};
return CGColorSpaceCreateICCBased(3, ranges, profileDataProvider.get(), deviceRGBColorSpaceRef());
#endif
}
NativeImagePtr ImageFrame::asNewNativeImage() const
{
RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, createColorSpace(m_colorProfile));
RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateWithCFData(m_backingStore.get()));
CGImageAlphaInfo alphaInfo = m_premultiplyAlpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaFirst;
return CGImageCreate(width(), height(), 8, 32, width() * sizeof(PixelData), colorSpace.get(),
alphaInfo | kCGBitmapByteOrder32Host, dataProvider.get(), 0, /*shouldInterpolate=*/true, kCGRenderingIntentDefault);
}
} // namespace WebCore
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