react-native-vision-camera/ios/Extensions/AVAssetWriterInputPixelBufferAdaptor+initWithVideoSettings.swift
Marc Rousavy 9c579c65aa
try: Improvements from WWDC 2021 1:1 workshop (#197)
* perf: Automatically determine Pixel Format depending on active format. (More efficient video recording 🚀)
* perf: Skip `AVAssetWriter` transform by directly correctly orienting the Video Output connection
* feat: Support camera flipping while recording
* feat: Run frame processor on separate queue, avoids stutters in video recordigns
* feat: Automatically drop late frame processor frames
2021-06-11 21:06:19 +02:00

32 lines
1.0 KiB
Swift

//
// AVAssetWriterInputPixelBufferAdaptor+initWithVideoSettings.swift
// VisionCamera
//
// Created by Marc Rousavy on 05.05.21.
// Copyright © 2021 mrousavy. All rights reserved.
//
import AVFoundation
import Foundation
extension AVAssetWriterInputPixelBufferAdaptor {
/**
Convenience initializer to extract correct attributes from the given videoSettings.
*/
convenience init(assetWriterInput: AVAssetWriterInput,
withVideoSettings videoSettings: [String: Any],
pixelFormat: OSType) {
var attributes: [String: Any] = [:]
if let width = videoSettings[AVVideoWidthKey] as? NSNumber,
let height = videoSettings[AVVideoHeightKey] as? NSNumber {
attributes[kCVPixelBufferWidthKey as String] = width as CFNumber
attributes[kCVPixelBufferHeightKey as String] = height as CFNumber
}
attributes[kCVPixelBufferPixelFormatTypeKey as String] = pixelFormat
self.init(assetWriterInput: assetWriterInput, sourcePixelBufferAttributes: attributes)
}
}