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//! HDR_WCG_idc — ISO/IEC 13818-1 §2.6.96, Table 2-114.
//!
//! Indicates the presence and type of HDR/WCG signalling in the stream.
/// HDR_WCG_idc field values (Table 2-114).
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize))]
#[non_exhaustive]
pub enum HdrWcgIdc {
/// 0 — SDR: BT.1886 reference EOTF, colour gamut within BT.709-6.
Sdr,
/// 1 — WCG only: colour gamut in a BT.2020 container that exceeds BT.709-6.
WcgOnly,
/// 2 — Both HDR and WCG indicated in the stream.
HdrAndWcg,
/// 3 — No indication regarding HDR/WCG or SDR characteristics.
NoIndication,
}
impl HdrWcgIdc {
/// Construct from a raw 2-bit value (0..=3).
#[must_use]
pub fn from_u8(v: u8) -> Self {
match v & 0x03 {
0 => Self::Sdr,
1 => Self::WcgOnly,
2 => Self::HdrAndWcg,
_ => Self::NoIndication,
}
}
/// Return the raw 2-bit value.
#[must_use]
pub const fn to_u8(self) -> u8 {
match self {
Self::Sdr => 0,
Self::WcgOnly => 1,
Self::HdrAndWcg => 2,
Self::NoIndication => 3,
}
}
/// Returns a human-readable spec name for this value.
#[must_use]
pub fn name(self) -> &'static str {
match self {
Self::Sdr => "SDR",
Self::WcgOnly => "WCG only",
Self::HdrAndWcg => "HDR and WCG",
Self::NoIndication => "no indication",
}
}
}
dvb_common::impl_spec_display!(HdrWcgIdc);