api/jsep.cc

/*
 *  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"

#include <cstddef>
#include <optional>
#include <string>

namespace webrtc {

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 "";
}

std::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 std::nullopt;
  }
}

}  // namespace webrtc