Enum CompressionMethod 

pub enum CompressionMethod {
    Copy,
    Lzma,
    Lzma2,
    Deflate,
    Bzip2,
    Ppmd,
    Lz4,
    Zstd,
    Brotli,
}

Compression method identifier for memory estimation.

This enum mirrors crate::codec::CodecMethod but is specifically used for memory estimation in the streaming API. You can convert from CodecMethod using From:

use zesven::codec::CodecMethod;
use zesven::streaming::CompressionMethod;

let method = CodecMethod::Lzma2;
let estimation_method: CompressionMethod = method.into();

Variants

Copy

Copy (no compression) - minimal memory.

Lzma

LZMA compression.

Lzma2

LZMA2 compression.

Deflate

Deflate compression.

Bzip2

BZip2 compression.

Ppmd

PPMd compression.

Lz4

LZ4 compression.

Zstd

ZSTD compression.

Brotli

Brotli compression.

Implementations

impl CompressionMethod

pub fn estimate_decoder_memory(&self, dict_size: Option<u32>) -> MemoryEstimate

Estimates decoder memory for this compression method.

Arguments

• dict_size - Dictionary size in bytes (for LZMA/LZMA2)

pub fn estimate_encoder_memory( &self, dict_size: Option<u32>, level: u32, ) -> MemoryEstimate

Estimates encoder memory for this compression method.

Encoder memory is typically 5-10x higher than decoder memory.

Arguments

• dict_size - Dictionary size in bytes (for LZMA/LZMA2)
• level - Compression level (0-9)

Trait Implementations

impl Clone for CompressionMethod

fn clone(&self) -> CompressionMethod

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CompressionMethod

impl Debug for CompressionMethod

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

Formats the value using the given formatter.

impl Eq for CompressionMethod

impl From<CodecMethod> for CompressionMethod

fn from(method: CodecMethod) -> Self

Converts to this type from the input type.

impl PartialEq for CompressionMethod

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CompressionMethod