1 /* 2 * Copyright (c) 2021-2022 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 ST_XML_PARSER_H 17 #define ST_XML_PARSER_H 18 19 #include <list> 20 #include <libxml/parser.h> 21 #include <libxml/tree.h> 22 #include <unordered_map> 23 24 #include "audio_module_info.h" 25 #include "iport_observer.h" 26 #include "parser.h" 27 28 namespace OHOS { 29 namespace AudioStandard { 30 class XMLParser : public Parser { 31 public: 32 static constexpr char CONFIG_FILE[] = "/etc/audio/audio_policy_config.xml"; 33 34 bool LoadConfiguration() final; 35 bool Parse() final; 36 void Destroy() final; 37 XMLParser(IPortObserver & observer)38 explicit XMLParser(IPortObserver &observer) 39 : mPortObserver(observer), 40 mDoc(nullptr) 41 { 42 } 43 ~XMLParser()44 virtual ~XMLParser() 45 { 46 Destroy(); 47 } 48 private: 49 NodeName GetNodeNameAsInt(xmlNode &node); 50 bool ParseInternal(xmlNode &node); 51 void ParseDeviceClass(xmlNode &node); 52 void ParseModules(xmlNode &node, std::string &className); 53 void ParsePorts(xmlNode &node, AudioModuleInfo &moduleInfo); 54 void ParsePort(xmlNode &node, AudioModuleInfo &moduleInfo); 55 void ParseAudioInterrupt(xmlNode &node); 56 std::string ExtractPropertyValue(const std::string &propName, xmlNode &node); 57 ClassType GetDeviceClassType(const std::string &deviceClass); 58 59 IPortObserver &mPortObserver; 60 xmlDoc *mDoc; 61 ClassType deviceClassType_; 62 std::unordered_map<ClassType, std::list<AudioModuleInfo>> xmlParsedDataMap_; 63 }; 64 } // namespace AudioStandard 65 } // namespace OHOS 66 67 #endif // ST_XML_PARSER_H 68