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 NS_ASSUME_NONNULL_BEGIN 16 17 /** Constraint keys for media sources. */ 18 /** The value for this key should be a base64 encoded string containing 19 * the data from the serialized configuration proto. 20 */ 21 RTC_EXTERN NSString *const kRTCMediaConstraintsAudioNetworkAdaptorConfig; 22 23 /** Constraint keys for generating offers and answers. */ 24 RTC_EXTERN NSString *const kRTCMediaConstraintsIceRestart; 25 RTC_EXTERN NSString *const kRTCMediaConstraintsOfferToReceiveAudio; 26 RTC_EXTERN NSString *const kRTCMediaConstraintsOfferToReceiveVideo; 27 RTC_EXTERN NSString *const kRTCMediaConstraintsVoiceActivityDetection; 28 29 /** Constraint values for Boolean parameters. */ 30 RTC_EXTERN NSString *const kRTCMediaConstraintsValueTrue; 31 RTC_EXTERN NSString *const kRTCMediaConstraintsValueFalse; 32 33 RTC_OBJC_EXPORT 34 @interface RTC_OBJC_TYPE (RTCMediaConstraints) : NSObject 35 36 - (instancetype)init NS_UNAVAILABLE; 37 38 /** Initialize with mandatory and/or optional constraints. */ 39 - (instancetype) 40 initWithMandatoryConstraints:(nullable NSDictionary<NSString *, NSString *> *)mandatory 41 optionalConstraints:(nullable NSDictionary<NSString *, NSString *> *)optional 42 NS_DESIGNATED_INITIALIZER; 43 44 @end 45 46 NS_ASSUME_NONNULL_END 47