Struct libflate::lz77::DefaultLz77Encoder

pub struct DefaultLz77Encoder { /* fields omitted */ }

A Lz77Encode implementation used by default.

Methods

impl DefaultLz77Encoder

pub fn new() -> Self

Makes a new encoder instance.

Examples

use libflate::deflate;
use libflate::lz77::{self, Lz77Encode, DefaultLz77Encoder};

let lz77 = DefaultLz77Encoder::new();
assert_eq!(lz77.window_size(), lz77::MAX_WINDOW_SIZE);

let options = deflate::EncodeOptions::with_lz77(lz77);
let _deflate = deflate::Encoder::with_options(Vec::new(), options);

pub fn with_window_size(size: u16) -> Self

Makes a new encoder instance with specified window size.

Larger window size is prefered to raise compression ratio, but it may require more working memory to encode and decode data.

Examples

use libflate::deflate;
use libflate::lz77::{self, Lz77Encode, DefaultLz77Encoder};

let lz77 = DefaultLz77Encoder::with_window_size(1024);
assert_eq!(lz77.window_size(), 1024);

let options = deflate::EncodeOptions::with_lz77(lz77);
let _deflate = deflate::Encoder::with_options(Vec::new(), options);

Trait Implementations

impl Debug for DefaultLz77Encoder

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for DefaultLz77Encoder

fn default() -> Self

Returns the "default value" for a type.

impl Lz77Encode for DefaultLz77Encoder

fn encode<S>(&mut self, buf: &[u8], sink: S) where
    S: Sink, 

Encodes a buffer and writes result LZ77 codes to sink.

fn flush<S>(&mut self, sink: S) where
    S: Sink, 

Flushes the encoder, ensuring that all intermediately buffered codes are consumed by sink.

fn window_size(&self) -> u16

Returns the window size of the encoder.

fn compression_level(&self) -> CompressionLevel

Returns the compression level of the encoder.