private static Size GetInitialResolution(CameraSensorLocation location, int videoWidth, int videoHeight)
{
var resolutions = AudioVideoCaptureDevice.GetAvailablePreviewResolutions(location);
// find the closest resolution
if (videoWidth > 0 || videoHeight > 0)
{
var closest = new List <Size>();
var distance = -1;
foreach (var res in resolutions)
{
if (distance < 0)
{
closest.Add(res);
distance = GetSizeDistance(res, videoWidth, videoHeight);
}
else
{
var d = GetSizeDistance(res, videoWidth, videoHeight);
if (d == distance)
{
closest.Add(res);
}
else if (d < distance)
{
closest = new List <Size>();
closest.Add(res);
distance = d;
}
}
}
resolutions = closest;
}
if (resolutions.Count == 0)
{
var error = "The camera does not support any resolutions.";
Log.Error(error);
throw new Exception(error);
}
return(resolutions[0]);
}