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103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#ifndef _TVG_RENDER_COMMON_H_
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#define _TVG_RENDER_COMMON_H_
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namespace tvg
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{
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struct Surface
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{
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//TODO: Union for multiple types
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uint32_t* buffer;
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size_t stride;
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size_t height;
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};
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class RenderMethod
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{
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public:
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enum UpdateFlag { None = 0, Path = 1, Fill = 2, All = 3 };
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virtual ~RenderMethod() {}
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virtual void* prepare(const ShapeNode& shape, void* data, UpdateFlag flags) = 0;
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virtual bool dispose(const ShapeNode& shape, void *data) = 0;
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virtual bool render(const ShapeNode& shape, void *data) = 0;
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virtual size_t ref() = 0;
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virtual size_t unref() = 0;
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};
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struct RenderInitializer
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{
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RenderMethod* pInst = nullptr;
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size_t refCnt = 0;
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bool initialized = false;
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static int init(RenderInitializer& renderInit, RenderMethod* engine)
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{
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assert(engine);
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if (renderInit.pInst || renderInit.refCnt > 0) return -1;
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renderInit.pInst = engine;
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renderInit.refCnt = 0;
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renderInit.initialized = true;
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return 0;
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}
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static int term(RenderInitializer& renderInit)
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{
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if (!renderInit.pInst || !renderInit.initialized) return -1;
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renderInit.initialized = false;
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//Still it's refered....
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if (renderInit.refCnt > 0) return 0;
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delete(renderInit.pInst);
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renderInit.pInst = nullptr;
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return 0;
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}
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static size_t unref(RenderInitializer& renderInit)
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{
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assert(renderInit.refCnt > 0);
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--renderInit.refCnt;
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//engine has been requested to termination
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if (!renderInit.initialized && renderInit.refCnt == 0) {
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if (renderInit.pInst) {
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delete(renderInit.pInst);
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renderInit.pInst = nullptr;
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}
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}
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return renderInit.refCnt;
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}
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static RenderMethod* inst(RenderInitializer& renderInit)
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{
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assert(renderInit.pInst);
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return renderInit.pInst;
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}
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static size_t ref(RenderInitializer& renderInit)
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{
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return ++renderInit.refCnt;
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}
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};
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}
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#endif //_TVG_RENDER_COMMON_H_
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