Vimba package Camera.LoadCameraSettings error and potential fix?

[jeehan-phillip-lee]

I was running into the Runtime Error "Camera.LoadCameraSettings" when attempting to use the VimbaCapture node with the xml settingsfile path specified. The node was functioning properly if settingsfile was left empty.

I took a look at the .NET example included with the SDK ("LoadSaveSettings") and it was calling Camera.Open before Camera.LoadCameraSettings, whereas the bonsai node was doing the opposite. In addition, the Vimba NET manual says that camera must be opened for LoadCameraSettings.

Based on this, I tried modifying the code from

if (!string.IsNullOrEmpty(settingsFile))
{
    camera.LoadCameraSettings(settingsFile);
}

var imageFormat = default(VmbPixelFormatType);
var converter = default(Func<Frame, IplImage>);
using var waitHandle = new ManualResetEvent(false);
using var notification = cancellationToken.Register(() => waitHandle.Set());
camera.Open(VmbAccessModeType.VmbAccessModeFull);

to

var imageFormat = default(VmbPixelFormatType);
var converter = default(Func<Frame, IplImage>);
using var waitHandle = new ManualResetEvent(false);
using var notification = cancellationToken.Register(() => waitHandle.Set());
camera.Open(VmbAccessModeType.VmbAccessModeFull);

if (!string.IsNullOrEmpty(settingsFile))
{
    camera.LoadCameraSettings(settingsFile);
}

and this seems to have solved the issue for me - the workflow runs without errors, and the camera settings change correctly.

It would be great if somebody could help verify that this error is not specific to my system and that the "fix" is working as intended. Thanks!