1 /* 2 * Copyright (c) 2024 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 AUDIO_PARAM_PARSER_H 17 #define AUDIO_PARAM_PARSER_H 18 19 #include <libxml/parser.h> 20 #include <libxml/tree.h> 21 #include <list> 22 #include <unordered_map> 23 #include <string> 24 #include <regex> 25 #include <set> 26 27 namespace OHOS { 28 namespace AudioStandard { 29 #ifdef USE_CONFIG_POLICY 30 static constexpr char CONFIG_FILE[] = "etc/audio/audio_param_config.xml"; 31 #endif 32 33 class AudioParamParser { 34 public: 35 AudioParamParser(); 36 ~AudioParamParser(); 37 38 bool LoadConfiguration( 39 std::unordered_map<std::string, std::unordered_map<std::string, std::set<std::string>>> &audioParameterKeys); 40 41 private: 42 bool ParseInternal(xmlNode *node, 43 std::unordered_map<std::string, std::unordered_map<std::string, std::set<std::string>>> &audioParameterKeys); 44 void ParseMainKeys(xmlNode *node, 45 std::unordered_map<std::string, std::unordered_map<std::string, std::set<std::string>>> &audioParameterKeys); 46 void ParseMainKey(xmlNode *node, 47 std::unordered_map<std::string, std::unordered_map<std::string, std::set<std::string>>> &audioParameterKeys); 48 void ParseSubKeys(xmlNode *node, std::string &className, 49 std::unordered_map<std::string, std::unordered_map<std::string, std::set<std::string>>> &audioParameterKeys); 50 51 std::string ExtractPropertyValue(const std::string &propName, xmlNode &node); 52 }; 53 } // namespace AudioStandard 54 } // namespace OHOS 55 56 #endif // AUDIO_PARAM_PARSER_H 57