CameraView in .net MAUI taking too much time for scanning barcode and QR code

[vplife1]

Description

CameraView Performance Issue: Slow Barcode/QR Code Scanning

I am experiencing a significant performance issue with the CameraView in my .NET MAUI app when scanning barcodes and QR codes. The scanning process is taking much longer than expected, leading to delays in my application.

UI Code
<Label x:Name="barcodeResult" FontSize="20"/> <cv:CameraView x:Name="cameraView" WidthRequest="300" HeightRequest="200" CamerasLoaded="cameraView_CamerasLoaded" BarCodeDetectionEnabled="True" BarcodeDetected="cameraView_BarcodeDetected"/>

Scan code
`private void cameraView_CamerasLoaded(object sender, EventArgs e)
{
if (cameraView.Cameras.Count > 0)
{
cameraView.Camera = cameraView.Cameras.First();
MainThread.BeginInvokeOnMainThread(async () =>
{
await cameraView.StopCameraAsync();
await cameraView.StartCameraAsync();
});
}
}

    private void cameraView_BarcodeDetected(object sender, Camera.MAUI.ZXingHelper.BarcodeEventArgs args)
    {
        MainThread.BeginInvokeOnMainThread(() =>
        {
            barcodeResult.Text = $"{args.Result[0].BarcodeFormat}: {args.Result[0].Text}";
        });
    }`

Steps to Reproduce

Launch the .NET MAUI app.
Navigate to the page containing the CameraView for barcode/QR code scanning.
Attempt to scan a barcode or QR code.
Observe the time it takes for the scanning process to complete.

Expected Behavior:
I expect the barcode/QR code scanning process to be quick and responsive, providing results promptly.

Actual Behavior:
The scanning process is noticeably slow, and there is a significant delay before the results are obtained.

Link to public reproduction project repository

No response

Version with bug

8.0.3

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android

Affected platform versions

No response

Did you find any workaround?

NA

Relevant log output

No response

[Ghostbird]

Are you sure this is a MAUI issue? AFAIK there is no CameraView in MAUI.

[vplife1]

@Ghostbird yes it's not a MAUI control, I am using this third-party control "Camera.MAUI" for scanning Barcode and QR code

[DxsSucuk]

Shouldn't the Issue then be created here: https://github.com/hjam40/Camera.MAUI/issues

[drasticactions]

Shouldn't the Issue then be created here: https://github.com/hjam40/Camera.MAUI/issues

I agree, this issue should go to the creators of the control. If there's an issue that they are having that is causing the slow performance that's specific with MAUI, we can make a new issue for that.