Enum EncodeBackendPreference 

#[non_exhaustive]
pub enum EncodeBackendPreference {
    Auto,
    CpuOnly,
    PreferDevice,
    RequireDevice,
}

Runtime preference for JPEG 2000 Lossless encode backends.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Auto

Let the crate choose the safest measured backend for the request.

CpuOnly

Always use CPU encoding.

PreferDevice

Prefer a device backend, but fall back to CPU when unavailable.

RequireDevice

Require a device backend and fail when it cannot be used.

Trait Implementations

impl Clone for EncodeBackendPreference

fn clone(&self) -> EncodeBackendPreference

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EncodeBackendPreference

impl Debug for EncodeBackendPreference

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EncodeBackendPreference

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for EncodeBackendPreference

impl PartialEq for EncodeBackendPreference

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for EncodeBackendPreference

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EncodeBackendPreference

impl ValueEnum for EncodeBackendPreference

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.