Enum CompressionLevel

#[repr(i32)]
pub enum CompressionLevel {
    NoCompression = 0,
    BestSpeed = 1,
    BestCompression = 9,
    UberCompression = 10,
    DefaultLevel = 6,
    DefaultCompression = -1,
}

How much processing the compressor should do to compress the data. NoCompression and Bestspeed have special meanings, the other levels determine the number of checks for matches in the hash chains and whether to use lazy or greedy parsing.

Variants

NoCompression = 0

Don’t do any compression, only output uncompressed blocks.

BestSpeed = 1

Fast compression. Uses a special compression routine that is optimized for speed.

BestCompression = 9

Slow/high compression. Do a lot of checks to try to find good matches.

UberCompression = 10

Even more checks, can be very slow.

DefaultLevel = 6

Default compromise between speed and compression.

DefaultCompression = -1

Use the default compression level.

Trait Implementations

impl Clone for CompressionLevel

fn clone(&self) -> CompressionLevel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionLevel

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

Formats the value using the given formatter.

impl Hash for CompressionLevel

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CompressionLevel

fn eq(&self, other: &CompressionLevel) -> 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 Copy for CompressionLevel

impl Eq for CompressionLevel

impl StructuralPartialEq for CompressionLevel