Enum UnsupportedOperation 

#[non_exhaustive]
pub enum UnsupportedOperation {
    RowLevelEncode,
    PullEncode,
    AnimationEncode,
    DecodeInto,
    RowLevelDecode,
    AnimationDecode,
    PixelFormat,
    MultiImageDecode,
    GainMapEncode,
}

Identifies an operation that a codec does not support.

Codecs include this in their error types (e.g. as a variant payload) so callers can generically detect “this codec doesn’t support this operation” without downcasting. See CodecErrorExt.

Example

use zencodec::UnsupportedOperation;

let op = UnsupportedOperation::DecodeInto;
assert_eq!(format!("{op}"), "unsupported operation: decode_into");

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.

RowLevelEncode

Encoder::push_rows() + finish() (row-level encode).

PullEncode

Encoder::encode_from() (pull-from-source encode).

AnimationEncode

All AnimationFrameEncoder methods (animation encoding).

DecodeInto

Decoder::decode_into() (decode into caller buffer).

RowLevelDecode

Decoder::decode_rows() (row-level decode).

AnimationDecode

All AnimationFrameDecoder methods (animation decoding).

PixelFormat

A specific pixel format is not supported.

MultiImageDecode

All MultiPageDecoder methods (multi-image decode).

GainMapEncode

Gain-map embedding on encode (with_gain_map_pixels / with_gain_map_encoded).

Implementations

impl UnsupportedOperation

pub const fn name(self) -> &'static str

Short name for the operation (suitable for error messages).

Trait Implementations

impl CategorizedError for UnsupportedOperation

fn codec_name(&self) -> Option<&'static str>

The originating codec’s name (e.g. Some("zenjpeg")). A codec returns a constant here on its error type so CodecError::from_native / of can tag the envelope from the value — no separate argument. Required: there is deliberately no default, so every implementor must answer it. The zencodec cause types (LimitExceeded, UnsupportedOperation, enough::StopReason) implement it as None since they aren’t codecs.

fn category(&self) -> ErrorCategory

This error’s coarse ErrorCategory.

impl Clone for UnsupportedOperation

fn clone(&self) -> UnsupportedOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UnsupportedOperation

impl Debug for UnsupportedOperation

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

Formats the value using the given formatter.

impl Display for UnsupportedOperation

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

Formats the value using the given formatter.

impl Eq for UnsupportedOperation

impl Error for UnsupportedOperation

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl Hash for UnsupportedOperation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for UnsupportedOperation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UnsupportedOperation