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Diffstat (limited to 'include/ports/SkImageGeneratorWIC.h')
-rw-r--r-- | include/ports/SkImageGeneratorWIC.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/ports/SkImageGeneratorWIC.h b/include/ports/SkImageGeneratorWIC.h new file mode 100644 index 0000000000..0ea0305a34 --- /dev/null +++ b/include/ports/SkImageGeneratorWIC.h @@ -0,0 +1,58 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "SkTypes.h" + +#if defined(SK_BUILD_FOR_WIN) + +#include "SkData.h" +#include "SkImageGenerator.h" +#include "SkTemplates.h" +#include "SkTScopedComPtr.h" + +#include <wincodec.h> + +/* + * Any Windows program that uses COM must initialize the COM library by calling + * the CoInitializeEx function. In addition, each thread that uses a COM + * interface must make a separate call to this function. + * + * For every successful call to CoInitializeEx, the thread must call + * CoUninitialize before it exits. + * + * SkImageGeneratorWIC requires the COM library and leaves it to the client to + * initialize COM for their application. + * + * For more information on initializing COM, please see: + * https://msdn.microsoft.com/en-us/library/windows/desktop/ff485844.aspx + */ +class SK_API SkImageGeneratorWIC : public SkImageGenerator { +public: + static std::unique_ptr<SkImageGenerator> MakeFromEncodedWIC(sk_sp<SkData>); + +protected: + sk_sp<SkData> onRefEncodedData() override; + + bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, const Options&) + override; + +private: + /* + * Takes ownership of the imagingFactory + * Takes ownership of the imageSource + */ + SkImageGeneratorWIC(const SkImageInfo& info, IWICImagingFactory* imagingFactory, + IWICBitmapSource* imageSource, sk_sp<SkData>); + + SkTScopedComPtr<IWICImagingFactory> fImagingFactory; + SkTScopedComPtr<IWICBitmapSource> fImageSource; + sk_sp<SkData> fData; + + typedef SkImageGenerator INHERITED; +}; + +#endif // SK_BUILD_FOR_WIN |