|  | /* | 
|  | *  Copyright 2018 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 "RTCAudioSession.h" | 
|  |  | 
|  | NS_ASSUME_NONNULL_BEGIN | 
|  |  | 
|  | namespace webrtc { | 
|  | class AudioSessionObserver; | 
|  | } | 
|  |  | 
|  | /** Adapter that forwards RTCAudioSessionDelegate calls to the appropriate | 
|  | *  methods on the AudioSessionObserver. | 
|  | */ | 
|  | @interface RTCNativeAudioSessionDelegateAdapter : NSObject <RTC_OBJC_TYPE (RTCAudioSessionDelegate)> | 
|  |  | 
|  | - (instancetype)init NS_UNAVAILABLE; | 
|  |  | 
|  | /** `observer` is a raw pointer and should be kept alive | 
|  | *  for this object's lifetime. | 
|  | */ | 
|  | - (instancetype)initWithObserver:(webrtc::AudioSessionObserver *)observer NS_DESIGNATED_INITIALIZER; | 
|  |  | 
|  | @end | 
|  |  | 
|  | NS_ASSUME_NONNULL_END |