1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <map> 20 #include <memory> 21 #include <vector> 22 23 #include <json/json.h> 24 25 #include <api/peer_connection_interface.h> 26 27 #include "common/libs/utils/result.h" 28 29 namespace cuttlefish { 30 namespace webrtc_streaming { 31 32 // Helper method to ensure a json object has the required fields convertible 33 // to the appropriate types. 34 Result<void> ValidateJsonObject( 35 const Json::Value& obj, const std::string& type, 36 const std::map<std::string, Json::ValueType>& required_fields, 37 const std::map<std::string, Json::ValueType>& optional_fields = {}); 38 39 // Parses a session description object from a JSON message. 40 Result<std::unique_ptr<webrtc::SessionDescriptionInterface>> 41 ParseSessionDescription(const std::string& type, const Json::Value& message, 42 webrtc::SdpType sdp_type); 43 44 // Parses an IceCandidate from a JSON message. 45 Result<std::unique_ptr<webrtc::IceCandidateInterface>> ParseIceCandidate( 46 const std::string& type, const Json::Value& message); 47 48 // Parses a JSON error message. 49 Result<std::string> ParseError(const std::string& type, 50 const Json::Value& message); 51 52 // Checks if the message contains an "ice_servers" array field and parses it 53 // into a vector of webrtc ICE servers. Returns an empty vector if the field 54 // isn't present. 55 Result<std::vector<webrtc::PeerConnectionInterface::IceServer>> 56 ParseIceServersMessage(const Json::Value& message); 57 58 // Generates a JSON message from a list of ICE servers. 59 Json::Value GenerateIceServersMessage( 60 const std::vector<webrtc::PeerConnectionInterface::IceServer>& ice_servers); 61 62 } // namespace webrtc_streaming 63 } // namespace cuttlefish 64