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 * Copyright (c) 2013, Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
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 * in the documentation and/or other materials provided with the
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#ifndef CompositorAnimationsImpl_h
#define CompositorAnimationsImpl_h

#include "core/CoreExport.h"
#include "core/animation/EffectModel.h"
#include "core/animation/KeyframeEffectModel.h"
#include "core/animation/Timing.h"
#include "platform/animation/TimingFunction.h"
#include "public/platform/WebCompositorAnimation.h"
#include "wtf/Allocator.h"

namespace blink {

class WebCompositorAnimationCurve;

class CORE_EXPORT CompositorAnimationsImpl {
    STATIC_ONLY(CompositorAnimationsImpl);
private:
    struct CompositorTiming {
        DISALLOW_NEW();
        void assertValid() const
        {
            ASSERT(scaledDuration > 0);
            ASSERT(std::isfinite(scaledTimeOffset));
            ASSERT(adjustedIterationCount > 0 || adjustedIterationCount == -1);
            ASSERT(std::isfinite(playbackRate) && playbackRate);
            ASSERT(iterationStart >= 0);
        }

        Timing::PlaybackDirection direction;
        double scaledDuration;
        double scaledTimeOffset;
        double adjustedIterationCount;
        double playbackRate;
        Timing::FillMode fillMode;
        double iterationStart;
    };

    static bool convertTimingForCompositor(const Timing&, double timeOffset, CompositorTiming& out, double animationPlaybackRate);

    static void getAnimationOnCompositor(const Timing&, int group, double startTime, double timeOffset, const KeyframeEffectModelBase&, Vector<OwnPtr<WebCompositorAnimation>>& animations, double animationPlaybackRate);

    static void addKeyframesToCurve(WebCompositorAnimationCurve&, const AnimatableValuePropertySpecificKeyframeVector&, const Timing&);

    friend class CompositorAnimations;
    friend class AnimationCompositorAnimationsTest;
};

} // namespace blink

#endif
