Trait CompressionFormatLevels 

pub trait CompressionFormatLevels: CompressionFormat {
    const COMPRESSION_LEVEL_NONE: u32;
    const COMPRESSION_LEVEL_FAST: u32;
    const COMPRESSION_LEVEL_BEST: u32;
    const COMPRESSION_LEVEL_DEFAULT: u32;
}

Available on crate feature compression only.

Defines compression level presets for a CompressionFormat.

Required Associated Constants

const COMPRESSION_LEVEL_NONE: u32

The level for no compression.

const COMPRESSION_LEVEL_FAST: u32

The level for ‘fast’ compression.

const COMPRESSION_LEVEL_BEST: u32

The level for ‘best’ compression.

const COMPRESSION_LEVEL_DEFAULT: u32

The level for default compression.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl CompressionFormatLevels for BZip2

Available on crate feature bzip only.

const COMPRESSION_LEVEL_NONE: u32 = 0

const COMPRESSION_LEVEL_FAST: u32 = 1

const COMPRESSION_LEVEL_BEST: u32 = 9

const COMPRESSION_LEVEL_DEFAULT: u32 = 6

impl CompressionFormatLevels for Deflate

Available on crate feature flate only.

const COMPRESSION_LEVEL_NONE: u32 = 0

const COMPRESSION_LEVEL_FAST: u32 = 1

const COMPRESSION_LEVEL_BEST: u32 = 9

const COMPRESSION_LEVEL_DEFAULT: u32 = 6

impl CompressionFormatLevels for Gz

Available on crate feature flate only.

const COMPRESSION_LEVEL_NONE: u32 = 0

const COMPRESSION_LEVEL_FAST: u32 = 1

const COMPRESSION_LEVEL_BEST: u32 = 9

const COMPRESSION_LEVEL_DEFAULT: u32 = 6

impl CompressionFormatLevels for Xz

Available on crate feature xz only.

const COMPRESSION_LEVEL_NONE: u32 = 0

const COMPRESSION_LEVEL_FAST: u32 = 1

const COMPRESSION_LEVEL_BEST: u32 = 9

const COMPRESSION_LEVEL_DEFAULT: u32 = 6

impl CompressionFormatLevels for ZLib

Available on crate feature flate only.

const COMPRESSION_LEVEL_NONE: u32 = 0

const COMPRESSION_LEVEL_FAST: u32 = 1

const COMPRESSION_LEVEL_BEST: u32 = 9

const COMPRESSION_LEVEL_DEFAULT: u32 = 6