moq_v4l/format/
quantization.rs

1use std::convert::TryFrom;
2use std::fmt;
3
4#[derive(Debug, Copy, Clone)]
5#[repr(u32)]
6/// Quantization for the colorspace.
7///
8/// The driver decides this for capture streams and the user sets
9/// it for output streams.
10pub enum Quantization {
11	/// default for the colorspace
12	Default = 0,
13	/// maps to the full range; 0 goes to 0 and 1 goes to 255
14	FullRange = 1,
15	/// maps to a limited range; 0 goes to 16 and 1 goes to 235
16	LimitedRange = 2,
17}
18
19impl fmt::Display for Quantization {
20	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
21		match self {
22			Self::Default => write!(f, "default"),
23			Self::FullRange => write!(f, "full range"),
24			Self::LimitedRange => write!(f, "limited range"),
25		}
26	}
27}
28
29impl TryFrom<u32> for Quantization {
30	type Error = ();
31
32	fn try_from(code: u32) -> Result<Self, Self::Error> {
33		match code {
34			0 => Ok(Self::Default),
35			1 => Ok(Self::FullRange),
36			2 => Ok(Self::LimitedRange),
37			_ => Err(()),
38		}
39	}
40}
moq_v4l/format/quantization.rs

moq_v4l/format/
quantization.rs
