Struct LzwDecoder 

pub struct LzwDecoder { /* private fields */ }

Decompresses an LZW stream.

Implementations

impl LzwDecoder

pub fn new(order: BitOrder, minimum_width: u32) -> Result<Self>

A decoder for order, with minimum_width bits per initial code.

GIF carries the minimum width in the image block; TIFF fixes it at 8.

Errors

Returns Error if minimum_width is outside 2..=11. A width of 1 has no room for both the clear and end codes, and 12 leaves none for the table.

pub fn gif(minimum_width: u32) -> Result<Self>

A decoder for GIF’s dialect at minimum_width.

Errors

As LzwDecoder::new.

pub const fn tiff() -> Self

A decoder for TIFF’s dialect, whose minimum width is always 8.

pub fn decode(&self, data: &[u8], limit: usize) -> Result<Vec<u8>>

Decompress data, refusing to produce more than limit bytes.

The bound is what makes a decompression bomb a malformed-input error rather than an allocation the caller has to survive: LZW expands by up to 4096:1, so a caller states what it is prepared to accept.

Errors

Returns Error for an invalid code, a stream that ends mid-symbol without an end code, or output exceeding limit.

Trait Implementations

impl Debug for LzwDecoder

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

Formats the value using the given formatter.