Enum DecodePolicy 

pub enum DecodePolicy {
    Auto,
    SpecificGpu(u32),
    FastestGpu,
}

How the decode pump selects its GPU — the decode-side counterpart to EncodePolicy. A sum type so the modes stay mutually exclusive: you can’t accidentally ask for “a specific GPU and the fastest”.

Variants

Auto

Follow the encode policy: the first device of the selected family/set, round-robin for per-rung pumps. The default.

SpecificGpu(u32)

Pin decode to this physical GPU index (e.g. decode on an iGPU while the dGPUs encode).

FastestGpu

Benchmark every decode-capable GPU on a short prefix of the input before the job and pin the pump to the fastest. The engine resolves this to SpecificGpu once the winner is known; a no-op on single-GPU hosts.

Implementations

impl DecodePolicy

pub fn gpu_index(self) -> Option<u32>

The concrete pinned GPU index, if any. Auto and an unresolved FastestGpu both return None, so the engine follows the encode policy.

pub fn is_fastest(self) -> bool

Whether the engine should benchmark decoders and resolve a fastest GPU.

Trait Implementations

impl Clone for DecodePolicy

fn clone(&self) -> DecodePolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DecodePolicy

impl Debug for DecodePolicy

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

Formats the value using the given formatter.

impl Default for DecodePolicy

fn default() -> DecodePolicy

Returns the “default value” for a type.

impl Eq for DecodePolicy

impl FromStr for DecodePolicy

fn from_str(s: &str) -> Result<Self, Self::Err>

Parse auto / fastest / a GPU index — the --decode-gpu value space.

type Err = String

The associated error which can be returned from parsing.

impl PartialEq for DecodePolicy

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