Add iOS

ios/Extensions/AVCaptureDevice.Format+isBetterThan.swift

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+//
+//  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
+  }
+}