[4/4]解决USB摄像头打开相机预览界面绿屏

liyujie

2025-08-28 786ff4f4ca2374bdd9177f2e24b503d43e7a3b93

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/*
 * Copyright 2012 The Android Open Source Project
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkLightingImageFilter_DEFINED
#define SkLightingImageFilter_DEFINED
 
#include "SkImageFilter.h"
#include "SkColor.h"
 
 
class SkImageFilterLight;
struct SkPoint3;
 
class SK_API SkLightingImageFilter : public SkImageFilter {
public:
    static sk_sp<SkImageFilter> MakeDistantLitDiffuse(const SkPoint3& direction,
        SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
        sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    static sk_sp<SkImageFilter> MakePointLitDiffuse(const SkPoint3& location,
        SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
        sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    static sk_sp<SkImageFilter> MakeSpotLitDiffuse(const SkPoint3& location,
        const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
        SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
        sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    static sk_sp<SkImageFilter> MakeDistantLitSpecular(const SkPoint3& direction,
        SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
        SkScalar shininess, sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    static sk_sp<SkImageFilter> MakePointLitSpecular(const SkPoint3& location,
        SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
        SkScalar shininess, sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    static sk_sp<SkImageFilter> MakeSpotLitSpecular(const SkPoint3& location,
        const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
        SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
        SkScalar shininess, sk_sp<SkImageFilter> input, const CropRect* cropRect = nullptr);
    ~SkLightingImageFilter() override;
 
    static void RegisterFlattenables();
 
protected:
    SkLightingImageFilter(sk_sp<SkImageFilterLight> light,
                          SkScalar surfaceScale,
                          sk_sp<SkImageFilter> input,
                          const CropRect* cropRect);
    void flatten(SkWriteBuffer&) const override;
    const SkImageFilterLight* light() const { return fLight.get(); }
    inline sk_sp<const SkImageFilterLight> refLight() const;
    SkScalar surfaceScale() const { return fSurfaceScale; }
    bool affectsTransparentBlack() const override { return true; }
 
private:
    sk_sp<SkImageFilterLight> fLight;
    SkScalar fSurfaceScale;
 
    typedef SkImageFilter INHERITED;
};
 
#endif