Enum Depth 

pub enum Depth {
    One,
    Two,
    Four,
    Eight,
    Sixteen,
}

Bits per component, as the sample stream carries them.

The five values /BitsPerComponent is allowed to take. A type rather than a u32 because the unpack loop dispatches on it once per image and then runs a loop that cannot be handed a depth the extractor does not know.

Variants

One

One bit: eight samples to the byte, MSB first.

Two

Two bits.

Four

Four bits: two samples to the byte.

Eight

Eight bits: one sample to the byte.

Sixteen

Sixteen bits, big-endian.

Implementations

impl Depth

pub const fn new(bpc: u32) -> Option<Self>

The depth bpc names, or None when it is not one PDF allows.

pub const fn bits(self) -> u32

Bits per sample.

pub const fn levels(self) -> usize

How many distinct raw values this depth can express — the width of one row of the decode table.

Trait Implementations

impl Clone for Depth

fn clone(&self) -> Depth

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Depth

impl Debug for Depth

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

Formats the value using the given formatter.

impl Eq for Depth

impl PartialEq for Depth

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Depth