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/*
* 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 SkImageGeneratorWIC : public SkImageGenerator {
public:
/*
* Refs the data if an image generator can be returned. Otherwise does
* not affect the data.
*/
static SkImageGenerator* NewFromEncodedWIC(SkData* data);
protected:
SkData* onRefEncodedData(SK_REFENCODEDDATA_CTXPARAM) override;
bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor ctable[],
int* ctableCount) override;
private:
/*
* Takes ownership of the imagingFactory
* Takes ownership of the imageSource
* Refs the data
*/
SkImageGeneratorWIC(const SkImageInfo& info, IWICImagingFactory* imagingFactory,
IWICBitmapSource* imageSource, SkData* data);
SkTScopedComPtr<IWICImagingFactory> fImagingFactory;
SkTScopedComPtr<IWICBitmapSource> fImageSource;
SkAutoTUnref<SkData> fData;
typedef SkImageGenerator INHERITED;
};
#endif // SK_BUILD_FOR_WIN
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