Enum DctTransformError 

#[non_exhaustive]
pub enum DctTransformError {
    Grid(DctGridError),
    InvalidSamplePlaneDimensions {
        width: usize,
        height: usize,
    },
    SamplePlaneLengthMismatch {
        sample_count: usize,
        width: usize,
        height: usize,
    },
    SymbolicWeightIndexOutOfRange {
        sample_len: usize,
        output_index: usize,
        high_pass: bool,
    },
    MemoryCapExceeded {
        requested: usize,
        cap: usize,
    },
    HostAllocationFailed {
        bytes: usize,
    },
}

Error returned when a DCT-grid transform cannot be executed safely.

Grid metadata failures remain available as Self::Grid. Allocation failures are reported separately so callers do not have to infer memory pressure from fabricated grid dimensions.

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.

Grid(DctGridError)

DCT block-grid metadata does not cover the requested sample plane.

InvalidSamplePlaneDimensions

A caller-provided sample plane has a zero width or height.

Fields

width: usize

Declared sample-plane width.

height: usize

Declared sample-plane height.

SamplePlaneLengthMismatch

A caller-provided sample plane does not match its declared dimensions.

Fields

sample_count: usize

Supplied sample count.

width: usize

Declared sample-plane width.

height: usize

Declared sample-plane height.

SymbolicWeightIndexOutOfRange

An internal symbolic-row request fell outside its derived band extent.

Fields

sample_len: usize

Input sample extent.

output_index: usize

Requested output-row index.

high_pass: bool

Whether the requested row was high-pass.

MemoryCapExceeded

Aggregate simultaneously-live transform workspace exceeds the host cap.

Fields

requested: usize

Requested host bytes.

cap: usize

Maximum permitted host bytes.

HostAllocationFailed

The host allocator could not reserve the requested transform storage.

Fields

bytes: usize

Requested host bytes.

Trait Implementations

impl Clone for DctTransformError

fn clone(&self) -> DctTransformError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DctTransformError

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

Formats the value using the given formatter.

impl Display for DctTransformError

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

Formats the value using the given formatter.

impl Eq for DctTransformError

impl Error for DctTransformError

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 From<DctGridError> for DctTransformError

fn from(value: DctGridError) -> Self

Converts to this type from the input type.

impl PartialEq for DctTransformError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DctTransformError