Struct ArithmeticEncoder 

pub struct ArithmeticEncoder<W: Write> { /* private fields */ }

Binary arithmetic encoder.

Implementations

impl<W: Write> ArithmeticEncoder<W>

pub fn new(out: W) -> Self

Create a new arithmetic encoder.

pub fn encode_counts(&mut self, c_lo: u64, c_hi: u64, total: u64) -> Result<()>

Encode a symbol using integer CDF bounds.

Arguments

• c_lo - Lower CDF bound (cumulative probability before symbol)
• c_hi - Upper CDF bound (cumulative probability including symbol)
• total - Total CDF range (should be CDF_TOTAL)

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

Encode a symbol given its PDF and symbol index.

This is a convenience method that quantizes the PDF to CDF internally.

pub fn finish(self) -> Result<W>

Finish encoding and flush remaining bits.

Returns the underlying writer.

pub fn bytes_written(&self) -> u64

Get the number of bytes written so far.