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 };
24 
25 NS_ASSUME_NONNULL_BEGIN
26 
27 RTC_OBJC_EXPORT
28 @interface RTC_OBJC_TYPE (RTCSessionDescription) : NSObject
29 
30 /** The type of session description. */
31 @property(nonatomic, readonly) RTCSdpType type;
32 
33 /** The SDP string representation of this session description. */
34 @property(nonatomic, readonly) NSString *sdp;
35 
36 - (instancetype)init NS_UNAVAILABLE;
37 
38 /** Initialize a session description with a type and SDP string. */
39 - (instancetype)initWithType:(RTCSdpType)type sdp:(NSString *)sdp NS_DESIGNATED_INITIALIZER;
40 
41 + (NSString *)stringForType:(RTCSdpType)type;
42 
43 + (RTCSdpType)typeForString:(NSString *)string;
44 
45 @end
46 
47 NS_ASSUME_NONNULL_END
48