Struct RansDecoder

Source

pub struct RansDecoder<'a> { /* private fields */ }

Expand description

Scalar rANS decoder.

Implementations§

Source §

impl<'a> RansDecoder<'a>

Source

pub fn new(input: &'a [u8]) -> Result<Self>

Create a new rANS decoder from input bytes.

Source

pub fn decode(&mut self, cdf: &[u32]) -> Result<usize>

Decode a symbol using a CDF table.

rANS decoding:

Extract slot = state % total (= state & (ANS_TOTAL - 1))
Find symbol s where cdf[s] <= slot < cdf[s+1]
Update state: x’ = freq * (x >> ANS_BITS) + (x & (ANS_TOTAL-1)) - c_lo

Source

pub fn decode_pdf(&mut self, pdf: &[f64]) -> Result<usize>

Decode a symbol given a PDF.

Auto Trait Implementations§

§

impl<'a> UnwindSafe for RansDecoder<'a>

Blanket Implementations§

Source §

impl<T> Any for T
where T: 'static + ?Sized,

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

§