|  | /* | 
|  | *  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> | 
|  |  | 
|  | NS_ASSUME_NONNULL_BEGIN | 
|  |  | 
|  | @class RTCAudioTrack; | 
|  | @class RTCPeerConnectionFactory; | 
|  | @class RTCVideoTrack; | 
|  |  | 
|  | @interface RTCMediaStream : NSObject | 
|  |  | 
|  | /** The audio tracks in this stream. */ | 
|  | @property(nonatomic, strong, readonly) NSArray<RTCAudioTrack *> *audioTracks; | 
|  |  | 
|  | /** The video tracks in this stream. */ | 
|  | @property(nonatomic, strong, readonly) NSArray<RTCVideoTrack *> *videoTracks; | 
|  |  | 
|  | /** An identifier for this media stream. */ | 
|  | @property(nonatomic, readonly) NSString *streamId; | 
|  |  | 
|  | - (instancetype)init NS_UNAVAILABLE; | 
|  |  | 
|  | /** Adds the given audio track to this media stream. */ | 
|  | - (void)addAudioTrack:(RTCAudioTrack *)audioTrack; | 
|  |  | 
|  | /** Adds the given video track to this media stream. */ | 
|  | - (void)addVideoTrack:(RTCVideoTrack *)videoTrack; | 
|  |  | 
|  | /** Removes the given audio track to this media stream. */ | 
|  | - (void)removeAudioTrack:(RTCAudioTrack *)audioTrack; | 
|  |  | 
|  | /** Removes the given video track to this media stream. */ | 
|  | - (void)removeVideoTrack:(RTCVideoTrack *)videoTrack; | 
|  |  | 
|  | @end | 
|  |  | 
|  | NS_ASSUME_NONNULL_END |