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_H 17 #define HISTREAMER_PIPELINE_CORE_PIPELINE_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 27 #include "filter.h" 28 #include "foundation/error_code.h" 29 #include "utils/utils.h" 30 31 namespace OHOS { 32 namespace Media { 33 namespace Pipeline { 34 class Pipeline : public Filter { 35 public: 36 ~Pipeline() override = default; 37 38 /** 39 * 添加Filter到Pipeline 40 * 41 * 添加后的Filter，才会被初始化，才能使用。 42 * 43 * @param filters 要添加的filter 44 * @return 45 */ 46 virtual ErrorCode AddFilters(std::initializer_list<Filter*> filters) = 0; 47 48 virtual ErrorCode RemoveFilter(Filter* filter) = 0; 49 50 virtual ErrorCode RemoveFilterChain(Filter* firstFilter) = 0; 51 52 /** 53 * 连接Filter的默认端口 54 * 55 * 前一个Filter的默认输出端口，与后一个Filter的默认输入端口连接 56 * 57 * @param filters 要连接的filter 58 * @return 59 */ 60 virtual ErrorCode LinkFilters(std::initializer_list<Filter*> filters) = 0; 61 62 /** 63 * 连接两个端口 64 * 65 * 端口所属的Filter必须已经添加到Pipeline，否则报错 66 * 67 * @param port1 前一个节点的输出端口 68 * @return 69 */ 70 virtual ErrorCode LinkPorts(std::shared_ptr<OutPort> port1, std::shared_ptr<InPort> port2) = 0; 71 }; 72 } // namespace Pipeline 73 } // namespace Media 74 } // namespace OHOS 75 76 #endif // HISTREAMER_PIPELINE_CORE_PIPELINE_H