ImageBufferShareableMappedIOSurfaceBackend.cpp [plain text]
#include "config.h"
#include "ImageBufferShareableMappedIOSurfaceBackend.h"
#if ENABLE(GPU_PROCESS) && HAVE(IOSURFACE)
#include <WebCore/GraphicsContextCG.h>
#include <wtf/IsoMallocInlines.h>
#include <wtf/StdLibExtras.h>
namespace WebKit {
using namespace WebCore;
WTF_MAKE_ISO_ALLOCATED_IMPL(ImageBufferShareableMappedIOSurfaceBackend);
std::unique_ptr<ImageBufferShareableMappedIOSurfaceBackend> ImageBufferShareableMappedIOSurfaceBackend::create(const Parameters& parameters, const HostWindow*)
{
IntSize backendSize = calculateBackendSize(parameters.logicalSize, parameters.resolutionScale);
if (backendSize.isEmpty())
return nullptr;
auto surface = IOSurface::create(backendSize, backendSize, cachedCGColorSpace(parameters.colorSpace), IOSurface::formatForPixelFormat(parameters.pixelFormat));
if (!surface)
return nullptr;
RetainPtr<CGContextRef> cgContext = surface->ensurePlatformContext();
if (!cgContext)
return nullptr;
CGContextClearRect(cgContext.get(), FloatRect(FloatPoint::zero(), backendSize));
return makeUnique<ImageBufferShareableMappedIOSurfaceBackend>(parameters, WTFMove(surface));
}
std::unique_ptr<ImageBufferShareableMappedIOSurfaceBackend> ImageBufferShareableMappedIOSurfaceBackend::create(const Parameters& parameters, ImageBufferBackendHandle handle)
{
if (!WTF::holds_alternative<MachSendRight>(handle)) {
ASSERT_NOT_REACHED();
return nullptr;
}
auto surface = IOSurface::createFromSendRight(WTFMove(WTF::get<MachSendRight>(handle)), cachedCGColorSpace(parameters.colorSpace));
if (!surface)
return nullptr;
return makeUnique<ImageBufferShareableMappedIOSurfaceBackend>(parameters, WTFMove(surface));
}
ImageBufferBackendHandle ImageBufferShareableMappedIOSurfaceBackend::createImageBufferBackendHandle() const
{
return ImageBufferBackendHandle(m_surface->createSendRight());
}
}
#endif // ENABLE(GPU_PROCESS) && HAVE(IOSURFACE)