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 typedef NS_ENUM(NSInteger, RTCDispatcherQueueType) { 14 // Main dispatcher queue. 15 RTCDispatcherTypeMain, 16 // Used for starting/stopping AVCaptureSession, and assigning 17 // capture session to AVCaptureVideoPreviewLayer. 18 RTCDispatcherTypeCaptureSession, 19 }; 20 21 /** Dispatcher that asynchronously dispatches blocks to a specific 22 * shared dispatch queue. 23 */ 24 @interface RTCDispatcher : NSObject 25 26 - (instancetype)init NS_UNAVAILABLE; 27 28 /** Dispatch the block asynchronously on the queue for dispatchType. 29 * @param dispatchType The queue type to dispatch on. 30 * @param block The block to dispatch asynchronously. 31 */ 32 + (void)dispatchAsyncOnType:(RTCDispatcherQueueType)dispatchType 33 block:(dispatch_block_t)block; 34 35 @end 36
