1 /* 2 * Copyright 2018 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef PC_SDP_SERIALIZER_H_ 12 #define PC_SDP_SERIALIZER_H_ 13 14 #include <string> 15 16 #include "absl/strings/string_view.h" 17 #include "api/rtc_error.h" 18 #include "media/base/rid_description.h" 19 #include "pc/session_description.h" 20 21 namespace webrtc { 22 23 // This class should serialize components of the SDP (and not the SDP itself). 24 // Example: 25 // SimulcastDescription can be serialized and deserialized by this class. 26 // The serializer will know how to translate the data to spec-compliant 27 // format without knowing about the SDP attribute details (a=simulcast:) 28 // Usage: 29 // Consider the SDP attribute for simulcast a=simulcast:<configuration>. 30 // The SDP serializtion code (webrtcsdp.h) should use |SdpSerializer| to 31 // serialize and deserialize the <configuration> section. 32 // This class will allow testing the serialization of components without 33 // having to serialize the entire SDP while hiding implementation details 34 // from callers of sdp serialization (webrtcsdp.h). 35 class SdpSerializer { 36 public: 37 // Serialization for the Simulcast description according to 38 // https://tools.ietf.org/html/draft-ietf-mmusic-sdp-simulcast-13#section-5.1 39 std::string SerializeSimulcastDescription( 40 const cricket::SimulcastDescription& simulcast) const; 41 42 // Deserialization for the SimulcastDescription according to 43 // https://tools.ietf.org/html/draft-ietf-mmusic-sdp-simulcast-13#section-5.1 44 RTCErrorOr<cricket::SimulcastDescription> DeserializeSimulcastDescription( 45 absl::string_view string) const; 46 47 // Serialization for the RID description according to 48 // https://tools.ietf.org/html/draft-ietf-mmusic-rid-15#section-10 49 std::string SerializeRidDescription( 50 const cricket::RidDescription& rid_description) const; 51 52 // Deserialization for the RidDescription according to 53 // https://tools.ietf.org/html/draft-ietf-mmusic-rid-15#section-10 54 RTCErrorOr<cricket::RidDescription> DeserializeRidDescription( 55 absl::string_view string) const; 56 }; 57 58 } // namespace webrtc 59 60 #endif // PC_SDP_SERIALIZER_H_ 61