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 <initializer_list> 20 #include <memory> 21 22 #include "filter.h" 23 24 namespace OHOS { 25 namespace Media { 26 namespace Pipeline { 27 class Pipeline : public Filter { 28 public: 29 ~Pipeline() override = default; 30 31 /** 32 * 添加Filter到Pipeline 33 * 34 * 添加后的Filter，才会被初始化，才能使用。 35 * 36 * @param filters 要添加的filter 37 * @return 38 */ 39 virtual ErrorCode AddFilters(std::initializer_list<Filter*> filters) = 0; 40 41 virtual ErrorCode RemoveFilter(Filter* filter) = 0; 42 43 virtual ErrorCode RemoveFilterChain(Filter* firstFilter) = 0; 44 45 /** 46 * 连接Filter的默认端口 47 * 48 * 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 49 * 50 * @param filters 要连接的filter 51 * @return 52 */ 53 virtual ErrorCode LinkFilters(std::initializer_list<Filter*> filters) = 0; 54 55 /** 56 * 连接两个端口 57 * 58 * 端口所属的Filter必须已经添加到Pipeline，否则报错 59 * 60 * @param port1 前一个节点的输出端口 61 * @return 62 */ 63 virtual ErrorCode LinkPorts(std::shared_ptr<OutPort> port1, std::shared_ptr<InPort> port2) = 0; 64 }; 65 } // namespace Pipeline 66 } // namespace Media 67 } // namespace OHOS 68 69 #endif // HISTREAMER_PIPELINE_CORE_PIPELINE_H