Struct JxlDecoder 

pub struct JxlDecoder;

JPEG-XL decoder.

Decodes JPEG-XL files (both bare codestream and ISOBMFF container format) into raw pixel data.

Implementations

impl JxlDecoder

pub fn new() -> Self

Create a new JPEG-XL decoder.

pub fn is_jxl(data: &[u8]) -> bool

Check if the data starts with a valid JXL signature.

Returns true for both bare codestream (0xFF 0x0A) and container format signatures.

pub fn is_codestream(data: &[u8]) -> bool

Check for bare codestream signature.

pub fn is_container(data: &[u8]) -> bool

Check for ISOBMFF container signature.

pub fn decode(&self, data: &[u8]) -> CodecResult<DecodedImage>

Decode a JPEG-XL file from bytes.

Errors

Returns error if:

• The data does not have a valid JXL signature
• The header is malformed
• The image data is corrupt
• Unsupported features are encountered

pub fn read_header(&self, data: &[u8]) -> CodecResult<JxlHeader>

Read only the header from a JPEG-XL file without fully decoding.

Errors

Returns error if the signature or header is invalid.

pub fn decode_animated(&self, data: &[u8]) -> CodecResult<Vec<JxlFrame>>

Decode an animated JPEG-XL codestream into a sequence of frames.

If the codestream is not animated, returns a single frame with duration_ticks = 0 and is_last = true.

Errors

Returns error if the codestream is invalid.

pub fn is_animated(&self, data: &[u8]) -> CodecResult<bool>

Check if a codestream is animated by reading just the header.

Errors

Returns error if the header is invalid.

pub fn read_animation_header( &self, data: &[u8], ) -> CodecResult<Option<JxlAnimation>>

Read the animation header from a JPEG-XL file.

Returns None if the file is not animated.

Errors

Returns error if the header is invalid.

Trait Implementations

impl Default for JxlDecoder

fn default() -> Self

Returns the “default value” for a type.