From 3c845ed4b03240dee19eb5d7041b8549ab68578d Mon Sep 17 00:00:00 2001
From: Marc Rousavy <marcrousavy@hotmail.com>
Date: Sat, 28 Aug 2021 14:14:16 +0200
Subject: [PATCH] fix: Fix app hard-crashing when FPS value is not supported
 (#391)

---
 ios/CameraView+AVCaptureSession.swift | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ios/CameraView+AVCaptureSession.swift b/ios/CameraView+AVCaptureSession.swift
index 7f6b35c..2d972a8 100644
--- a/ios/CameraView+AVCaptureSession.swift
+++ b/ios/CameraView+AVCaptureSession.swift
@@ -160,6 +160,14 @@ extension CameraView {
       try device.lockForConfiguration()
 
       if let fps = self.fps?.int32Value {
+        let supportsGivenFps = device.activeFormat.videoSupportedFrameRateRanges.contains { range in
+          return range.includes(fps: Double(fps))
+        }
+        if !supportsGivenFps {
+          invokeOnError(.format(.invalidFps(fps: Int(fps))))
+          return
+        }
+
         let duration = CMTimeMake(value: 1, timescale: fps)
         device.activeVideoMinFrameDuration = duration
         device.activeVideoMaxFrameDuration = duration