Fix Low Camera Resolution fix (#40)

[DigitApps2]

No description provided.

[janusw]

@DigitApps2 Thanks for the carry-over from hjam40#172 !

[janusw]

I can confirm that this fixes the problem from #40, as seen on the FullScreenPage of the Camera.MAUI.Test app.

However, I do feel like the fix is a bit "hacky". There is already some dedicated logic for choosing a video size here:

CameraMaui/Camera.MAUI/Platforms/Android/MauiCameraView.cs

Lines 774 to 791 in 4c88a23

	private Size ChooseVideoSize(Size[] choices)
	{
	Size result = choices[0];
	int diference = int.MaxValue;
	bool swapped = IsDimensionSwapped();
	foreach (Size size in choices)
	{
	int w = swapped ? size.Height : size.Width;
	int h = swapped ? size.Width : size.Height;
	if (size.Width == size.Height * 4 / 3 && w >= Width && h >= Height && size.Width * size.Height < diference)
	{
	result = size;
	diference = size.Width * size.Height;
	}
	}
	return result;
	}

I guess it would be better to fix it there than to always enforce the maximum video size.

[janusw]

However, I do feel like the fix is a bit "hacky". There is already some dedicated logic for choosing a video size here:

CameraMaui/Camera.MAUI/Platforms/Android/MauiCameraView.cs

Line 774 in 4c88a23

private Size ChooseVideoSize(Size[] choices)

What this method does is to choose the smallest possible video size that is bigger than the size of the CameraView.

The problem of bad resolution apparently occurs if the preview is started already before the view has obtained a proper size: Width and Height are both still zero, and consequently the smallest video size overall is chosen, leading to poor resolution.

IMHO a more appropriate fix would be to modfiy ChooseVideoSize such that it falls back to using ChooseMaxVideoSize if either Width or Height are zero. I'll prepare an alternative PR which does that ...