66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
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/*
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* Copyright 2024 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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NS_ASSUME_NONNULL_BEGIN
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/** Represents the source type of received media. */
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typedef NS_ENUM(NSInteger, RTCRtpSourceType) {
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RTCRtpSourceTypeSSRC,
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RTCRtpSourceTypeCSRC,
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};
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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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(RTCRtpSource)<NSObject>
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/**
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A positive integer value specifying the CSRC identifier of the contributing source or SSRC
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identifier of the synchronization source. This uniquely identifies the source of the particular
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stream RTP packets. */
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@property(nonatomic, readonly) uint32_t sourceId;
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@property(nonatomic, readonly) RTCRtpSourceType sourceType;
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/**
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A floating-point value between 0.0 and 1.0 specifying the audio level contained in the last RTP
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packet played from the contributing source.
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*/
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@property(nonatomic, readonly, nullable) NSNumber *audioLevel;
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/**
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A timestamp indicating the most recent time at which a frame originating from this source was
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delivered to the receiver's track
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*/
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@property(nonatomic, readonly) CFTimeInterval timestampUs;
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/**
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The RTP timestamp of the media. This source-generated timestamp indicates the time at which the
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media in this packet, scheduled for play out at the time indicated by timestamp, was initially
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sampled or generated. It may be useful for sequencing and synchronization purposes.
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*/
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@property(nonatomic, readonly) uint32_t rtpTimestamp;
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@end
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RTC_OBJC_EXPORT
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@interface RTC_OBJC_TYPE (RTCRtpSource) : NSObject <RTC_OBJC_TYPE(RTCRtpSource)>
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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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