Enum Error 

#[non_exhaustive]
pub enum Error {
    InvalidDimensions {
        width: u32,
        height: u32,
        reason: &'static str,
    },
    InvalidQuality {
        value: f32,
        valid_range: &'static str,
    },
    InvalidColorFormat {
        reason: &'static str,
    },
    InvalidBufferSize {
        expected: usize,
        actual: usize,
    },
    InvalidJpegData {
        reason: &'static str,
    },
    UnexpectedEof {
        context: &'static str,
    },
    InvalidMarker {
        marker: u8,
        context: &'static str,
    },
    InvalidHuffmanTable {
        table_idx: u8,
        reason: &'static str,
    },
    InvalidQuantTable {
        table_idx: u8,
        reason: &'static str,
    },
    UnsupportedFeature {
        feature: &'static str,
    },
    InternalError {
        reason: &'static str,
    },
    IoError {
        reason: String,
    },
    IccError(String),
    DecodeError(String),
    InvalidScanScript(String),
    AllocationFailed {
        bytes: usize,
        context: &'static str,
    },
    SizeOverflow {
        context: &'static str,
    },
    ImageTooLarge {
        pixels: u64,
        limit: u64,
    },
    TooManyScans {
        count: usize,
        limit: usize,
    },
}

Errors that can occur during JPEG encoding/decoding.

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.

InvalidDimensions

Invalid input dimensions (zero or too large).

Fields

width: u32

Width provided

height: u32

Height provided

reason: &'static str

Reason for invalidity

InvalidQuality

Invalid quality parameter.

Fields

value: f32

Value provided

valid_range: &'static str

Valid range description

InvalidColorFormat

Invalid color space or pixel format combination.

Fields

reason: &'static str

Description of the issue

InvalidBufferSize

Input buffer has wrong size.

Fields

expected: usize

Expected size in bytes

actual: usize

Actual size in bytes

InvalidJpegData

Invalid JPEG data (corrupted or not a JPEG).

Fields

reason: &'static str

Description of the issue

UnexpectedEof

Unexpected end of input data.

Fields

context: &'static str

Context where EOF occurred

InvalidMarker

Invalid marker or segment in JPEG stream.

Fields

marker: u8

The marker byte encountered

context: &'static str

Context

InvalidHuffmanTable

Invalid Huffman table.

Fields

table_idx: u8

Table index

reason: &'static str

Description of the issue

InvalidQuantTable

Invalid quantization table.

Fields

table_idx: u8

Table index

reason: &'static str

Description of the issue

UnsupportedFeature

Unsupported JPEG feature.

Fields

feature: &'static str

Description of unsupported feature

InternalError

Internal error (should not happen in correct usage).

Fields

reason: &'static str

Description

IoError

I/O error during encoding/decoding.

Fields

reason: String

Description

IccError(String)

ICC color management error.

DecodeError(String)

Decode error from JPEG decoder.

InvalidScanScript(String)

Invalid scan script for progressive encoding.

AllocationFailed

Memory allocation failed (OOM or limit exceeded).

Fields

bytes: usize

Number of bytes requested

context: &'static str

Context where allocation failed

SizeOverflow

Size calculation overflowed.

Fields

context: &'static str

Context where overflow occurred

ImageTooLarge

Image exceeds maximum pixel limit.

Fields

pixels: u64

Total pixels in image

limit: u64

Maximum allowed pixels

TooManyScans

Too many progressive scans.

Fields

count: usize

Number of scans encountered

limit: usize

Maximum allowed

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<Error> for Error

fn from(err: Error) -> Self

Converts to this type from the input type.

impl PartialEq for Error

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