Enum ColorimetryMode 

pub enum ColorimetryMode {
    Fast,
    Exact,
}

How convert() trades colorimetric exactness against speed on platforms where the exact path is expensive.

Today this affects one decision: NV12 sources on Vivante GC7000UL (i.MX 8M Plus), where the hardware external sampler converts ~12× faster than the colorimetry-exact in-shader matrix (2.5 ms vs 29 ms at 720p) but applies the driver’s fixed BT.601-limited matrix regardless of the source’s tagged colorimetry. Platforms where the exact path is already the fastest correct path (Mali, V3D, Tegra, ANGLE) behave identically in both modes.

Override at runtime with EDGEFIRST_COLORIMETRY=fast|exact (takes precedence over the config field), or per-source by forcing a path with EDGEFIRST_NV_CONVERT_PATH.

Variants

Fast

Prefer the fastest path whose output is correct-enough video RGB (default; issue #106 policy). On Vivante, NV12 takes the hardware sampler even when the source is not BT.601-limited.

Exact

Prefer bit-exact colorimetry everywhere: the fast path is used only when it matches the source’s resolved (encoding, range) exactly.

Trait Implementations

impl Clone for ColorimetryMode

fn clone(&self) -> ColorimetryMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColorimetryMode

impl Debug for ColorimetryMode

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

Formats the value using the given formatter.

impl Default for ColorimetryMode

fn default() -> ColorimetryMode

Returns the “default value” for a type.

impl Eq for ColorimetryMode

impl PartialEq for ColorimetryMode

fn eq(&self, other: &ColorimetryMode) -> 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 ColorimetryMode