96 lines
3.1 KiB
Objective-C
96 lines
3.1 KiB
Objective-C
/*
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* Copyright 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import <Foundation/Foundation.h>
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#import "RTCMediaStreamTrack.h"
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#import "RTCRtpParameters.h"
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#import "sdk/objc/base/RTCMacros.h"
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NS_ASSUME_NONNULL_BEGIN
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/** Represents the media type of the RtpReceiver. */
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typedef NS_ENUM(NSInteger, RTCRtpMediaType) {
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RTCRtpMediaTypeAudio,
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RTCRtpMediaTypeVideo,
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RTCRtpMediaTypeData,
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RTCRtpMediaTypeUnsupported,
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};
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@class RTC_OBJC_TYPE(RTCRtpReceiver);
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@class RTC_OBJC_TYPE(RTCRtpSource);
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RTC_OBJC_EXPORT
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@protocol RTC_OBJC_TYPE
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(RTCRtpReceiverDelegate)<NSObject>
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/** Called when the first RTP packet is received.
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*
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* Note: Currently if there are multiple RtpReceivers of the same media
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* type, they will all call OnFirstPacketReceived at once.
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*
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* For example, if we create three audio receivers, A/B/C, they will listen
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* to the same signal from the underneath network layer. Whenever the first
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* audio packet is received, the underneath signal will be fired. All the
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* receivers A/B/C will be notified and the callback of the receiver's
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* delegate will be called.
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*
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* The process is the same for video receivers.
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*/
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- (void)rtpReceiver : (RTC_OBJC_TYPE(RTCRtpReceiver) *)
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rtpReceiver didReceiveFirstPacketForMediaType
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: (RTCRtpMediaType)mediaType;
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@end
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RTC_OBJC_EXPORT
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@protocol RTC_OBJC_TYPE
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(RTCRtpReceiver)<NSObject>
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/** A unique identifier for this receiver. */
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@property(nonatomic, readonly) NSString *receiverId;
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/** The currently active RTCRtpParameters, as defined in
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* https://www.w3.org/TR/webrtc/#idl-def-RTCRtpParameters.
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*
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* The WebRTC specification only defines RTCRtpParameters in terms of senders,
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* but this API also applies them to receivers, similar to ORTC:
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* http://ortc.org/wp-content/uploads/2016/03/ortc.html#rtcrtpparameters*.
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*/
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@property(nonatomic, readonly) RTC_OBJC_TYPE(RTCRtpParameters) * parameters;
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/** The RTCMediaStreamTrack associated with the receiver.
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* Note: reading this property returns a new instance of
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* RTCMediaStreamTrack. Use isEqual: instead of == to compare
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* RTCMediaStreamTrack instances.
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*/
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@property(nonatomic, readonly, nullable) RTC_OBJC_TYPE(RTCMediaStreamTrack) *
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track;
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/**
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Returns an array that contains an object for each unique SSRC (synchronization
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source) identifier and for each unique CSRC (contributing source) received by
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the current RTCRtpReceiver in the last ten seconds.
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*/
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@property(nonatomic, readonly) NSArray<RTC_OBJC_TYPE(RTCRtpSource) *> *sources;
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/** The delegate for this RtpReceiver. */
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@property(nonatomic, weak) id<RTC_OBJC_TYPE(RTCRtpReceiverDelegate)> delegate;
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@end
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RTC_OBJC_EXPORT
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@interface RTC_OBJC_TYPE (RTCRtpReceiver) : NSObject <RTC_OBJC_TYPE(RTCRtpReceiver)>
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- (instancetype)init NS_UNAVAILABLE;
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@end
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NS_ASSUME_NONNULL_END
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