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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.
*/
#ifndef SkWebpCodec_DEFINED
#define SkWebpCodec_DEFINED
#include "SkCodec.h"
#include "SkEncodedFormat.h"
#include "SkImageInfo.h"
#include "SkTypes.h"
class SkStream;
class SkWebpCodec final : public SkCodec {
public:
// Assumes IsWebp was called and returned true.
static SkCodec* NewFromStream(SkStream*);
static bool IsWebp(SkStream*);
protected:
Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMColor*, int*)
override;
SkEncodedFormat onGetEncodedFormat() const override { return kWEBP_SkEncodedFormat; }
bool onReallyHasAlpha() const override {
return this->getInfo().alphaType() != kOpaque_SkAlphaType;
}
SkISize onGetScaledDimensions(float desiredScale) const override;
bool onGetValidSubset(SkIRect* /* desiredSubset */) const override;
private:
SkWebpCodec(const SkImageInfo&, SkStream*);
typedef SkCodec INHERITED;
};
#endif // SkWebpCodec_DEFINED
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