|  | /* | 
|  | *  Copyright 2016 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" | 
|  |  | 
|  | typedef NS_ENUM(NSInteger, RTCSourceState) { | 
|  | RTCSourceStateInitializing, | 
|  | RTCSourceStateLive, | 
|  | RTCSourceStateEnded, | 
|  | RTCSourceStateMuted, | 
|  | }; | 
|  |  | 
|  | NS_ASSUME_NONNULL_BEGIN | 
|  |  | 
|  | RTC_OBJC_EXPORT | 
|  | @interface RTC_OBJC_TYPE (RTCMediaSource) : NSObject | 
|  |  | 
|  | /** The current state of the RTCMediaSource. */ | 
|  | @property(nonatomic, readonly) RTCSourceState state; | 
|  |  | 
|  | - (instancetype)init NS_UNAVAILABLE; | 
|  |  | 
|  | @end | 
|  |  | 
|  | NS_ASSUME_NONNULL_END |