Additional Configuration Types

In addition to the standard data types, some configuration parameters take only certain allowed strings.

`PixelFormat`

A pixel format is a string, with the following known recognized values:

?n where n is a number from 1 to 200 (inclusive): an anonymous format, with n channels. For example, ?3 is a format with three channels.
luma, Luma, LUMA: a single, luma channel.
rgb, RGB: three channels: red, green, and blue.
hsv, HSV: three channels: hue, saturation, and value. Note that all three are in the full 0-255 range.
ycc, YCC, ycbcr, YCbCr: three channels: luma, blue chrominance, red chrominance. All channels are in the 0-255 range.
rgba, RGBA: four channels: red, green, blue, alpha. Because VikingVision doesn’t typically care about the alpha, the alpha is unmultiplied.
yuyv, YUYV: four channels every two pixels, YUYV 4:2:2.

A type of a generic argument can be specified as a generic string. The following values are recognized:

i8, i16, i32, i64, isize, u8, u16, u32, u64, usize, f32, f64: all the same as their Rust equivalent
buffer: a Rust Buffer
string: a Rust String
blob: a Rust Blob
apriltag: a Rust Detection (requires the apriltag feature)
any of the previous, wrapped in brackets, like [usize]: a Vec of the contained type