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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCodec.h"
#include "SkData.h"
#include "SkImageGenerator.h"
class SkCodecImageGenerator : public SkImageGenerator {
public:
/*
* If this data represents an encoded image that we know how to decode,
* return an SkCodecImageGenerator. Otherwise return nullptr.
*
* Refs the data if an image generator can be returned. Otherwise does
* not affect the data.
*/
static SkImageGenerator* NewFromEncodedCodec(SkData* data);
protected:
SkData* onRefEncodedData(SK_REFENCODEDDATA_CTXPARAM) override;
bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor ctable[],
int* ctableCount) override;
bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3],
SkYUVColorSpace* colorSpace) override;
private:
/*
* Takes ownership of codec
* Refs the data
*/
SkCodecImageGenerator(SkCodec* codec, SkData* data);
SkAutoTDelete<SkCodec> fCodec;
SkAutoTUnref<SkData> fData;
// FIXME: These fields are necessary only until we change the API of SkImageGenerator
// to match SkCodec. Once the API is changed, they should be removed.
int fYWidth;
int fUWidth;
int fVWidth;
typedef SkImageGenerator INHERITED;
};
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