v4l/format/
transfer.rs

1use std::convert::TryFrom;
2use std::fmt;
3
4#[derive(Debug, Copy, Clone)]
5#[repr(u32)]
6/// Transfer function for the colorspace. The driver decides this for capture streams and the user
7/// sets it for output streams.
8pub enum TransferFunction {
9    /// default from the colorspace
10    Default = 0,
11    /// Rec. 709 transfer function
12    Rec709 = 1,
13    /// sRGB transfer function
14    SRGB = 2,
15    /// opRGB transfer function
16    OPRGB = 3,
17    /// SMPTE 230M transfer function
18    SMPTE240M = 4,
19    /// No transfer function
20    None = 5,
21    /// DCI-P3 transfer function
22    DCIP3 = 6,
23    /// SMPTE 2084 transfer function
24    SMPTE2084 = 7,
25}
26
27impl fmt::Display for TransferFunction {
28    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29        match self {
30            Self::Default => write!(f, "default transfer function"),
31            Self::Rec709 => write!(f, "Rec. 709 transfer function"),
32            Self::SRGB => write!(f, "sRGB transfer function"),
33            Self::OPRGB => write!(f, "opRGB transfer function"),
34            Self::SMPTE240M => write!(f, "SMPTE 240M transfer function"),
35            Self::None => write!(f, "No transfer function"),
36            Self::DCIP3 => write!(f, "DCI-P3 transfer function"),
37            Self::SMPTE2084 => write!(f, "SMPTE 2084 transfer function"),
38        }
39    }
40}
41
42impl TryFrom<u32> for TransferFunction {
43    type Error = ();
44
45    fn try_from(colorspace_code: u32) -> Result<Self, Self::Error> {
46        match colorspace_code {
47            0 => Ok(Self::Default),
48            1 => Ok(Self::Rec709),
49            2 => Ok(Self::SRGB),
50            3 => Ok(Self::OPRGB),
51            4 => Ok(Self::SMPTE240M),
52            5 => Ok(Self::None),
53            6 => Ok(Self::DCIP3),
54            7 => Ok(Self::SMPTE2084),
55            _ => Err(()),
56        }
57    }
58}
v4l/format/transfer.rs

v4l/format/
transfer.rs
