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
}
bool LegacyWebArchive::init(SharedBuffer* data)
{
ASSERT(data);
if (!data)
return false;
RetainPtr<CFDataRef> cfData(AdoptCF, data->createCFData());
if (!cfData)
return false;
CFStringRef errorString = 0;
RetainPtr<CFDictionaryRef> plist(AdoptCF, static_cast<CFDictionaryRef>(CFPropertyListCreateFromXMLData(0, cfData.get(), kCFPropertyListImmutable, &errorString)));
if (!plist) {
#ifndef NDEBUG
const char* cError = errorString ? CFStringGetCStringPtr(errorString, kCFStringEncodingUTF8) : "unknown error";
LOG(Archives, "LegacyWebArchive - Error parsing PropertyList from archive data - %s", cError);
#endif
if (errorString)
CFRelease(errorString);
return false;
}
if (CFGetTypeID(plist.get()) != CFDictionaryGetTypeID()) {
LOG(Archives, "LegacyWebArchive - Archive property list is not the expected CFDictionary, aborting invalid WebArchive");
return false;
}
return extract(plist.get());
}
void SharedBuffer::maybeTransferPlatformData()
{
if (!m_cfData)
return;
ASSERT(!m_size);
// Hang on to the m_cfData pointer in a local pointer as append() will re-enter maybeTransferPlatformData()
// and we need to make sure to early return when it does.
RetainPtr<CFDataRef> cfData(AdoptCF, m_cfData.leakRef());
append(reinterpret_cast<const char*>(CFDataGetBytePtr(cfData.get())), CFDataGetLength(cfData.get()));
}
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
}
