| /* |
| * Copyright 2024 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #import <Foundation/Foundation.h> |
| |
| #import "RTCMacros.h" |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| /** Represents the source type of received media. */ |
| typedef NS_ENUM(NSInteger, RTCRtpSourceType) { |
| RTCRtpSourceTypeSSRC, |
| RTCRtpSourceTypeCSRC, |
| }; |
| |
| @class RTC_OBJC_TYPE(RTCRtpSource); |
| |
| RTC_OBJC_EXPORT |
| @protocol RTC_OBJC_TYPE |
| (RTCRtpSource)<NSObject> |
| |
| /** |
| A positive integer value specifying the CSRC identifier of the contributing source or SSRC |
| identifier of the synchronization source. This uniquely identifies the source of the particular |
| stream RTP packets. */ |
| @property(nonatomic, readonly) uint32_t sourceId; |
| |
| @property(nonatomic, readonly) RTCRtpSourceType sourceType; |
| |
| /** |
| A floating-point value between 0.0 and 1.0 specifying the audio level contained in the last RTP |
| packet played from the contributing source. |
| */ |
| @property(nonatomic, readonly, nullable) NSNumber *audioLevel; |
| |
| /** |
| A timestamp indicating the most recent time at which a frame originating from this source was |
| delivered to the receiver's track |
| */ |
| @property(nonatomic, readonly) CFTimeInterval timestampUs; |
| |
| /** |
| The RTP timestamp of the media. This source-generated timestamp indicates the time at which the |
| media in this packet, scheduled for play out at the time indicated by timestamp, was initially |
| sampled or generated. It may be useful for sequencing and synchronization purposes. |
| */ |
| @property(nonatomic, readonly) uint32_t rtpTimestamp; |
| |
| @end |
| |
| RTC_OBJC_EXPORT |
| @interface RTC_OBJC_TYPE (RTCRtpSource) : NSObject <RTC_OBJC_TYPE(RTCRtpSource)> |
| |
| - (instancetype)init NS_UNAVAILABLE; |
| |
| @end |
| |
| NS_ASSUME_NONNULL_END |