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4e8c115960
This is a reland of 239f92ecf7
Original change's description:
> introduce an unsupported content description type
>
> This carries around unsupported content descriptions
> (i.e. things where webrtc does not understand the media type
> or protocol) in a special data type so that a rejected content or
> mediasection is added to the answer SDP.
>
> BUG=webrtc:3513
>
> Change-Id: Ifc4168eae11e899f2504649de5e1eecb6801a9fb
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179082
> Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
> Cr-Commit-Position: refs/heads/master@{#32410}
Bug: webrtc:3513
Change-Id: I48e338100f829f1df5b8165217c89b5ef860fe79
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/188820
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32457}
86 lines
2.8 KiB
Objective-C
86 lines
2.8 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 "RTCMacros.h"
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#import "RTCMediaStreamTrack.h"
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#import "RTCRtpParameters.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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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 type,
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* 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 to
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* the same signal from the underneath network layer. Whenever the first audio packet
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* is received, the underneath signal will be fired. All the receivers A/B/C will be
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* notified and the callback of the receiver's 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
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: (RTC_OBJC_TYPE(RTCRtpReceiver) *)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) * track;
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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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