1 /* 2 * Copyright (c) 2021-2021 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 16 #ifndef HISTREAMER_PIPELINE_CORE_PIPELINE_CORE_H 17 #define HISTREAMER_PIPELINE_CORE_PIPELINE_CORE_H 18 19 #include <algorithm> 20 #include <atomic> 21 #include <functional> 22 #include <initializer_list> 23 #include <memory> 24 #include <string> 25 #include <vector> 26 #include <stack> 27 #include "foundation/osal/thread/mutex.h" 28 #include "pipeline/core/error_code.h" 29 #include "pipeline/core/pipeline.h" 30 #include "plugin/common/plugin_types.h" 31 32 namespace OHOS { 33 namespace Media { 34 namespace Pipeline { 35 class PipelineCore : public Pipeline { 36 public: 37 ~PipelineCore() override = default; 38 39 void Init(EventReceiver* receiver, FilterCallback* callback) override; 40 41 ErrorCode Prepare() override; 42 43 ErrorCode Start() override; 44 45 ErrorCode Pause() override; 46 47 ErrorCode Resume() override; 48 49 ErrorCode Stop() override; 50 51 void FlushStart() override; 52 53 void FlushEnd() override; 54 55 void OnEvent(const Event& event) override; 56 57 FilterState GetState(); 58 59 ErrorCode AddFilters(std::initializer_list<Filter*> filtersIn) override; 60 ErrorCode RemoveFilter(Filter* filter) override; 61 ErrorCode RemoveFilterChain(Filter* firstFilter) override; 62 ErrorCode LinkFilters(std::initializer_list<Filter*> filters) override; 63 ErrorCode LinkPorts(std::shared_ptr<OutPort> port1, std::shared_ptr<InPort> port2) override; 64 65 void InitFilters(const std::vector<Filter*>& filters); 66 private: 67 void ReorderFilters(); 68 69 void NotifyEvent(const Event& event); 70 71 size_t readyEventCnt_ {0}; 72 FilterState state_ {FilterState::CREATED}; 73 OSAL::Mutex mutex_ {}; 74 std::vector<Filter*> filters_ {}; 75 EventReceiver* eventReceiver_ {nullptr}; 76 FilterCallback* filterCallback_ {nullptr}; 77 std::vector<Filter*> filtersToRemove_ {}; 78 }; 79 } // namespace Pipeline 80 } // namespace Media 81 } // namespace OHOS 82 #endif // HISTREAMER_PIPELINE_CORE_PIPELINE_CORE_H 83