1 /* 2 * Copyright 2015 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 #import <Foundation/Foundation.h> 12 13 #import "RTCMacros.h" 14 15 /** 16 * Represents the session description type. This exposes the same types that are 17 * in C++, which doesn't include the rollback type that is in the W3C spec. 18 */ 19 typedef NS_ENUM(NSInteger, RTCSdpType) { 20 RTCSdpTypeOffer, 21 RTCSdpTypePrAnswer, 22 RTCSdpTypeAnswer, 23 RTCSdpTypeRollback, 24 }; 25 26 NS_ASSUME_NONNULL_BEGIN 27 28 RTC_OBJC_EXPORT 29 @interface RTC_OBJC_TYPE (RTCSessionDescription) : NSObject 30 31 /** The type of session description. */ 32 @property(nonatomic, readonly) RTCSdpType type; 33 34 /** The SDP string representation of this session description. */ 35 @property(nonatomic, readonly) NSString *sdp; 36 37 - (instancetype)init NS_UNAVAILABLE; 38 39 /** Initialize a session description with a type and SDP string. */ 40 - (instancetype)initWithType:(RTCSdpType)type sdp:(NSString *)sdp NS_DESIGNATED_INITIALIZER; 41 42 + (NSString *)stringForType:(RTCSdpType)type; 43 44 + (RTCSdpType)typeForString:(NSString *)string; 45 46 @end 47 48 NS_ASSUME_NONNULL_END 49