| Anders Carlsson | 7bca8ca | 2018-08-30 09:30:29 +0200 | [diff] [blame^] | 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 | typedef NS_ENUM(NSInteger, RTCDispatcherQueueType) { |
| 16 | // Main dispatcher queue. |
| 17 | RTCDispatcherTypeMain, |
| 18 | // Used for starting/stopping AVCaptureSession, and assigning |
| 19 | // capture session to AVCaptureVideoPreviewLayer. |
| 20 | RTCDispatcherTypeCaptureSession, |
| 21 | // Used for operations on AVAudioSession. |
| 22 | RTCDispatcherTypeAudioSession, |
| 23 | }; |
| 24 | |
| 25 | /** Dispatcher that asynchronously dispatches blocks to a specific |
| 26 | * shared dispatch queue. |
| 27 | */ |
| 28 | RTC_EXPORT |
| 29 | @interface RTCDispatcher : NSObject |
| 30 | |
| 31 | - (instancetype)init NS_UNAVAILABLE; |
| 32 | |
| 33 | /** Dispatch the block asynchronously on the queue for dispatchType. |
| 34 | * @param dispatchType The queue type to dispatch on. |
| 35 | * @param block The block to dispatch asynchronously. |
| 36 | */ |
| 37 | + (void)dispatchAsyncOnType:(RTCDispatcherQueueType)dispatchType block:(dispatch_block_t)block; |
| 38 | |
| 39 | /** Returns YES if run on queue for the dispatchType otherwise NO. |
| 40 | * Useful for asserting that a method is run on a correct queue. |
| 41 | */ |
| 42 | + (BOOL)isOnQueueForType:(RTCDispatcherQueueType)dispatchType; |
| 43 | |
| 44 | @end |