1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef RENDER_SERVICE_CLIENT_CORE_RENDER_RS_FOREGROUND_EFFECT_FILTER_H 16 #define RENDER_SERVICE_CLIENT_CORE_RENDER_RS_FOREGROUND_EFFECT_FILTER_H 17 18 #include <memory> 19 20 #include "effect/runtime_effect.h" 21 #include "effect/runtime_shader_builder.h" 22 #include "render/rs_skia_filter.h" 23 24 namespace OHOS { 25 namespace Rosen { 26 struct ForegroundEffectParam { 27 Drawing::Rect src; 28 Drawing::Rect dst; 29 ForegroundEffectParamForegroundEffectParam30 ForegroundEffectParam(const Drawing::Rect& src, const Drawing::Rect& dst) 31 : src(src), dst(dst) {} 32 }; 33 class RSB_EXPORT RSForegroundEffectFilter : public RSDrawingFilterOriginal { 34 public: 35 RSForegroundEffectFilter(float blurRadius); 36 RSForegroundEffectFilter(const RSForegroundEffectFilter&) = delete; 37 RSForegroundEffectFilter operator=(const RSForegroundEffectFilter&) = delete; 38 ~RSForegroundEffectFilter() override; 39 40 bool IsValid() const override; 41 std::string GetDescription() override; 42 void DrawImageRect(Drawing::Canvas& canvas, const std::shared_ptr<Drawing::Image>& image, 43 const Drawing::Rect& src, const Drawing::Rect& dst) const override; PreProcess(std::shared_ptr<Drawing::Image> image)44 void PreProcess(std::shared_ptr<Drawing::Image> image) override {}; PostProcess(Drawing::Canvas & canvas)45 void PostProcess(Drawing::Canvas& canvas) override {}; 46 float GetDirtyExtension() const; 47 Compose(const std::shared_ptr<RSDrawingFilterOriginal> & other)48 std::shared_ptr<RSDrawingFilterOriginal> Compose( 49 const std::shared_ptr<RSDrawingFilterOriginal>& other) const override 50 { 51 return nullptr; 52 } 53 54 private: 55 float blurScale_ {}; 56 float blurRadius_ {}; //kawase blur's blur radius 57 int numberOfPasses_{}; 58 float radiusByPasses_{}; 59 float unit_{}; 60 61 static constexpr float BASE_BLUR_SCALE = 0.5f; // base downSample radio 62 static constexpr uint32_t MAX_PASSES_LARGE_RADIUS = 7; 63 static constexpr float DILATED_CONVOLUTION_LARGE_RADIUS = 4.6f; 64 static constexpr int EXPAND_UNIT_NUM = 4; 65 static constexpr int MOVE_UNIT_NUM = 2; 66 static constexpr float BLUR_RADIUS_LIMIT = 10000.0f; 67 68 static std::shared_ptr<Drawing::RuntimeShaderBuilder> MakeForegroundEffect(); 69 void ComputeParamter(int radius); 70 void AdjustRadiusAndScale(); 71 void ComputePassesAndUnit(); 72 void ApplyForegroundEffect(Drawing::Canvas& canvas, const std::shared_ptr<Drawing::Image>& image, 73 const ForegroundEffectParam& param) const; 74 75 friend class RSMarshallingHelper; 76 }; 77 } // namespace Rosen 78 } // namespace OHOS 79 80 #endif // RENDER_SERVICE_CLIENT_CORE_RENDER_RS_FOREGROUND_EFFECT_FILTER_H