|  | /* | 
|  | *  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 "RTCMediaStreamTrack.h" | 
|  |  | 
|  | #import "sdk/objc/base/RTCMacros.h" | 
|  |  | 
|  | NS_ASSUME_NONNULL_BEGIN | 
|  |  | 
|  | @protocol RTC_OBJC_TYPE | 
|  | (RTCVideoRenderer); | 
|  | @class RTC_OBJC_TYPE(RTCPeerConnectionFactory); | 
|  | @class RTC_OBJC_TYPE(RTCVideoSource); | 
|  |  | 
|  | RTC_OBJC_EXPORT | 
|  | @interface RTC_OBJC_TYPE (RTCVideoTrack) : RTC_OBJC_TYPE(RTCMediaStreamTrack) | 
|  |  | 
|  | /** The video source for this video track. */ | 
|  | @property(nonatomic, readonly) RTC_OBJC_TYPE(RTCVideoSource) *source; | 
|  |  | 
|  | - (instancetype)init NS_UNAVAILABLE; | 
|  |  | 
|  | /** Register a renderer that will render all frames received on this track. */ | 
|  | - (void)addRenderer:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)renderer; | 
|  |  | 
|  | /** Deregister a renderer. */ | 
|  | - (void)removeRenderer:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)renderer; | 
|  |  | 
|  | @end | 
|  |  | 
|  | NS_ASSUME_NONNULL_END |