| /* | 
 |  *  Copyright 2017 The WebRTC project authors. All Rights Reserved. | 
 |  * | 
 |  *  Use of this source code is governed by a BSD-style license | 
 |  *  that can be found in the LICENSE file in the root of the source | 
 |  *  tree. An additional intellectual property rights grant can be found | 
 |  *  in the file PATENTS.  All contributing project authors may | 
 |  *  be found in the AUTHORS file in the root of the source tree. | 
 |  */ | 
 |  | 
 | #include "api/jsep.h" | 
 |  | 
 | namespace webrtc { | 
 |  | 
 | std::string IceCandidateInterface::server_url() const { | 
 |   return ""; | 
 | } | 
 |  | 
 | size_t SessionDescriptionInterface::RemoveCandidates( | 
 |     const std::vector<cricket::Candidate>& candidates) { | 
 |   return 0; | 
 | } | 
 |  | 
 | const char SessionDescriptionInterface::kOffer[] = "offer"; | 
 | const char SessionDescriptionInterface::kPrAnswer[] = "pranswer"; | 
 | const char SessionDescriptionInterface::kAnswer[] = "answer"; | 
 | const char SessionDescriptionInterface::kRollback[] = "rollback"; | 
 |  | 
 | const char* SdpTypeToString(SdpType type) { | 
 |   switch (type) { | 
 |     case SdpType::kOffer: | 
 |       return SessionDescriptionInterface::kOffer; | 
 |     case SdpType::kPrAnswer: | 
 |       return SessionDescriptionInterface::kPrAnswer; | 
 |     case SdpType::kAnswer: | 
 |       return SessionDescriptionInterface::kAnswer; | 
 |     case SdpType::kRollback: | 
 |       return SessionDescriptionInterface::kRollback; | 
 |   } | 
 |   return ""; | 
 | } | 
 |  | 
 | absl::optional<SdpType> SdpTypeFromString(const std::string& type_str) { | 
 |   if (type_str == SessionDescriptionInterface::kOffer) { | 
 |     return SdpType::kOffer; | 
 |   } else if (type_str == SessionDescriptionInterface::kPrAnswer) { | 
 |     return SdpType::kPrAnswer; | 
 |   } else if (type_str == SessionDescriptionInterface::kAnswer) { | 
 |     return SdpType::kAnswer; | 
 |   } else if (type_str == SessionDescriptionInterface::kRollback) { | 
 |     return SdpType::kRollback; | 
 |   } else { | 
 |     return absl::nullopt; | 
 |   } | 
 | } | 
 |  | 
 | }  // namespace webrtc |