Enum Compression 

pub enum Compression {
    None,
    Lzw,
    Deflate,
    PackBits,
}

How pixel data is compressed (TIFF 6.0 §Section 8, plus §Deflate).

Variants

None

Stored uncompressed.

Lzw

LZW, TIFF’s dialect.

Deflate

The Deflate extension, both the official and the old Adobe tag.

PackBits

PackBits run-length encoding, which baseline TIFF requires.

Implementations

impl Compression

pub fn from_tag(value: u32) -> Result<Self>

The scheme for a Compression tag value.

Errors

Returns PixelsError::Unsupported for a scheme this codec does not implement — CCITT fax and old-style JPEG, principally. That is an unsupported layout, not an exotic tag, so it is reported rather than skipped: the pixels cannot be produced without it.

Trait Implementations

impl Clone for Compression

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Compression

impl Debug for Compression

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

Formats the value using the given formatter.

impl Eq for Compression

impl Hash for Compression

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 Compression

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Compression