void ImageSource::setData(SharedBuffer* data, bool allDataReceived)
{
#if PLATFORM(MAC)
if (!m_decoder)
m_decoder = CGImageSourceCreateIncremental(0);
// On Mac the NSData inside the SharedBuffer can be secretly appended to without the SharedBuffer's knowledge. We use SharedBuffer's ability
// to wrap itself inside CFData to get around this, ensuring that ImageIO is really looking at the SharedBuffer.
RetainPtr<CFDataRef> cfData(AdoptCF, data->createCFData());
CGImageSourceUpdateData(m_decoder, cfData.get(), allDataReceived);
#else
if (!m_decoder) {
m_decoder = CGImageSourceCreateIncremental(0);
} else if (allDataReceived) {
#if !PLATFORM(WIN)
// 10.6 bug workaround: image sources with final=false fail to draw into PDF contexts, so re-create image source
// when data is complete. <rdar://problem/7874035> (<http://openradar.appspot.com/7874035>)
CFRelease(m_decoder);
m_decoder = CGImageSourceCreateIncremental(0);
#endif
}
// Create a CGDataProvider to wrap the SharedBuffer.
data->ref();
// We use the GetBytesAtPosition callback rather than the GetBytePointer one because SharedBuffer
// does not provide a way to lock down the byte pointer and guarantee that it won't move, which
// is a requirement for using the GetBytePointer callback.
CGDataProviderDirectCallbacks providerCallbacks = { 0, 0, 0, sharedBufferGetBytesAtPosition, sharedBufferRelease };
RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateDirect(data, data->size(), &providerCallbacks));
CGImageSourceUpdateDataProvider(m_decoder, dataProvider.get(), allDataReceived);
#endif
}
void ImageSource::setData(SharedBuffer* data, bool allDataReceived)
{
if (!m_decoder)
m_decoder = CGImageSourceCreateIncremental(NULL);
#if PLATFORM(MAC)
// On Mac the NSData inside the SharedBuffer can be secretly appended to without the SharedBuffer's knowledge. We use SharedBuffer's ability
// to wrap itself inside CFData to get around this, ensuring that ImageIO is really looking at the SharedBuffer.
CFDataRef cfData = data->createCFData();
#else
// If no NSData is available, then we know SharedBuffer will always just be a vector. That means no secret changes can occur to it behind the
// scenes. We use CFDataCreateWithBytesNoCopy in that case.
CFDataRef cfData = CFDataCreateWithBytesNoCopy(0, reinterpret_cast<const UInt8*>(data->data()), data->size(), kCFAllocatorNull);
#endif
CGImageSourceUpdateData(m_decoder, cfData, allDataReceived);
CFRelease(cfData);
}
void ImageSource::setData(SharedBuffer* data, bool allDataReceived)
{
if (!m_decoder)
m_decoder = CGImageSourceCreateIncremental(NULL);
#if PLATFORM(MAC)
// On Mac the NSData inside the SharedBuffer can be secretly appended to without the SharedBuffer's knowledge. We use SharedBuffer's ability
// to wrap itself inside CFData to get around this, ensuring that ImageIO is really looking at the SharedBuffer.
RetainPtr<CFDataRef> cfData(AdoptCF, data->createCFData());
CGImageSourceUpdateData(m_decoder, cfData.get(), allDataReceived);
#else
// Create a CGDataProvider to wrap the SharedBuffer.
data->ref();
// We use the GetBytesAtPosition callback rather than the GetBytePointer one because SharedBuffer
// does not provide a way to lock down the byte pointer and guarantee that it won't move, which
// is a requirement for using the GetBytePointer callback.
CGDataProviderDirectCallbacks providerCallbacks = { 0, 0, 0, sharedBufferGetBytesAtPosition, sharedBufferRelease };
RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateDirect(data, data->size(), &providerCallbacks));
CGImageSourceUpdateDataProvider(m_decoder, dataProvider.get(), allDataReceived);
#endif
}
void ImageDecoder::setData(SharedBuffer& data, bool allDataReceived)
{
m_isAllDataReceived = allDataReceived;
#if PLATFORM(COCOA)
// On Mac the NSData inside the SharedBuffer can be secretly appended to without the SharedBuffer's knowledge.
// We use SharedBuffer's ability to wrap itself inside CFData to get around this, ensuring that ImageIO is
// really looking at the SharedBuffer.
CGImageSourceUpdateData(m_nativeDecoder.get(), data.createCFData().get(), allDataReceived);
#else
// Create a CGDataProvider to wrap the SharedBuffer.
data.ref();
// We use the GetBytesAtPosition callback rather than the GetBytePointer one because SharedBuffer
// does not provide a way to lock down the byte pointer and guarantee that it won't move, which
// is a requirement for using the GetBytePointer callback.
CGDataProviderDirectCallbacks providerCallbacks = { 0, 0, 0, sharedBufferGetBytesAtPosition, sharedBufferRelease };
RetainPtr<CGDataProviderRef> dataProvider = adoptCF(CGDataProviderCreateDirect(&data, data.size(), &providerCallbacks));
CGImageSourceUpdateDataProvider(m_nativeDecoder.get(), dataProvider.get(), allDataReceived);
#endif
}
void ImageSource::setData(NativeBytePtr data, bool allDataReceived)
{
if (!m_decoder)
m_decoder = CGImageSourceCreateIncremental(imageSourceOptions());
CGImageSourceUpdateData(m_decoder, data, allDataReceived);
}
