text: /*
   *  Copyright 2015 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.
   */
  
  #import <Foundation/Foundation.h>
  
  #import "RTCMacros.h"
  
  /**
   * Represents the session description type. This exposes the same types that are
   * in C++, which doesn't include the rollback type that is in the W3C spec.
   */
  typedef NS_ENUM(NSInteger, RTCSdpType) {
    RTCSdpTypeOffer,
    RTCSdpTypePrAnswer,
    RTCSdpTypeAnswer,
  };
  
  NS_ASSUME_NONNULL_BEGIN
  
  RTC_OBJC_EXPORT
  __attribute__((objc_runtime_name("WUJI_RTCSessionDescription"))) @interface RTCSessionDescription : NSObject
  
  /** The type of session description. */
  @property(nonatomic, readonly) RTCSdpType type;
  
  /** The SDP string representation of this session description. */
  @property(nonatomic, readonly) NSString *sdp;
  
  - (instancetype)init NS_UNAVAILABLE;
  
  /** Initialize a session description with a type and SDP string. */
  - (instancetype)initWithType:(RTCSdpType)type sdp:(NSString *)sdp NS_DESIGNATED_INITIALIZER;
  
  + (NSString *)stringForType:(RTCSdpType)type;
  
  + (RTCSdpType)typeForString:(NSString *)string;
  
  @end
  
  NS_ASSUME_NONNULL_END
  