Enum TransferFn 

pub enum TransferFn {
    Bt709,
    Bt470Bg,
    Linear,
    St2084,
    AribStdB67,
    Unspecified,
}

Transfer characteristics per ITU-T H.273 §8.2 / H.265 Table E.4. Carried on StreamInfo so the MP4 mux’s colr nclx writer can round-trip HDR10 (ST2084) and HLG content without losing metadata.

Separate from ColorSpace so existing call sites — every decoder emits a VideoFrame { color_space, .. } and every colorspace converter / encoder dispatches on it — continue to compile unchanged. The transfer function is orthogonal to the matrix coefficients for pipeline purposes; only the mux needs both.

Variants

Bt709

Gamma 2.2 / Rec. 709 (H.273 value 1). Default for SDR content.

Bt470Bg

Gamma 2.8 / BT.470BG.

Linear

Linear (H.273 value 8).

St2084

SMPTE ST 2084 / PQ (H.273 value 16). HDR10.

AribStdB67

ARIB STD-B67 / HLG (H.273 value 18). Broadcast HDR.

Unspecified

Unspecified or unmapped — consumers fall back to Bt709 gamma.

Implementations

impl TransferFn

pub fn from_h273(value: u8) -> Self

Map an H.273 transfer_characteristics value to the subset of transfers this pipeline knows about. Unknown values collapse to Unspecified.

Trait Implementations

impl Clone for TransferFn

fn clone(&self) -> TransferFn

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TransferFn

impl Debug for TransferFn

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TransferFn

fn default() -> TransferFn

Returns the “default value” for a type.

impl Eq for TransferFn

impl PartialEq for TransferFn

fn eq(&self, other: &TransferFn) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for TransferFn