react-native-vision-camera/ios/Extensions/AVCaptureDevice.Format+isBetterThan.swift
Marc Rousavy 00c8970366 Add iOS
2021-02-19 16:28:05 +01:00

48 lines
1.5 KiB
Swift

//
// AVCaptureDevice.Format+isBetterThan.swift
// Cuvent
//
// Created by Marc Rousavy on 19.12.20.
// Copyright © 2020 Facebook. All rights reserved.
//
import AVFoundation
extension AVCaptureDevice.Format {
/** Compares the current Format to the given format and returns true if the current format has either:
* 1. Higher still image capture dimensions
* 2. Higher video format dimensions (iOS 13.0)
* 3. Higher FPS
*/
func isBetterThan(_ other: AVCaptureDevice.Format) -> Bool {
// compare still image dimensions
let leftDimensions = highResolutionStillImageDimensions
let rightDimensions = other.highResolutionStillImageDimensions
if leftDimensions.height * leftDimensions.width > rightDimensions.height * rightDimensions.width
{
return true
}
if #available(iOS 13.0, *) {
// compare video dimensions
let leftVideo = self.formatDescription.presentationDimensions()
let rightVideo = other.formatDescription.presentationDimensions()
if leftVideo.height * leftVideo.width > rightVideo.height * rightVideo.width
{
return true
}
}
// compare max fps
if let leftMaxFps = videoSupportedFrameRateRanges.max(by: { $0.maxFrameRate > $1.maxFrameRate }),
let rightMaxFps = other.videoSupportedFrameRateRanges.max(by: { $0.maxFrameRate > $1.maxFrameRate })
{
if leftMaxFps.maxFrameRate > rightMaxFps.maxFrameRate {
return true
}
}
return false
}
}