31 lines
1014 B
Swift
31 lines
1014 B
Swift
|
//
|
||
|
|
// AVCaptureSession+synchronizeBuffer.swift
|
||
|
|
// VisionCamera
|
||
|
|
//
|
||
|
|
// Created by Marc Rousavy on 22.11.23.
|
||
|
|
// Copyright © 2023 mrousavy. All rights reserved.
|
||
|
|
//
|
||
|
|
|
||
|
|
import AVFoundation
|
||
|
|
import Foundation
|
||
|
|
|
||
|
|
extension AVCaptureSession {
|
||
|
|
private var clock: CMClock {
|
||
|
|
if #available(iOS 15.4, *), let synchronizationClock {
|
||
|
|
return synchronizationClock
|
||
|
|
}
|
||
|
|
|
||
|
|
return masterClock ?? CMClockGetHostTimeClock()
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Synchronizes a Buffer received from this [AVCaptureSession] to the timebase of the other given [AVCaptureSession].
|
||
|
|
*/
|
||
|
|
func synchronizeBuffer(_ buffer: CMSampleBuffer, toSession to: AVCaptureSession) {
|
||
|
|
let timestamp = CMSampleBufferGetPresentationTimeStamp(buffer)
|
||
|
|
let synchronizedTimestamp = CMSyncConvertTime(timestamp, from: clock, to: to.clock)
|
||
|
|
ReactLogger.log(level: .info, message: "Synchronized Timestamp \(timestamp.seconds) -> \(synchronizedTimestamp.seconds)")
|
||
|
|
CMSampleBufferSetOutputPresentationTimeStamp(buffer, newValue: synchronizedTimestamp)
|
||
|
|
}
|
||
|
|
}
|