Struct BitWriter 

pub struct BitWriter { /* private fields */ }

MSB-first bit writer over an internal byte buffer.

Implementations

impl BitWriter

pub fn new() -> Self

pub fn with_capacity(cap: usize) -> Self

pub fn bit_position(&self) -> u64

Total bits written so far (including any in the unflushed accumulator).

pub fn byte_len(&self) -> usize

Bytes of output produced so far (excluding any unflushed partial byte).

pub fn is_byte_aligned(&self) -> bool

True if the writer is currently on a byte boundary.

pub fn write_u32(&mut self, value: u32, n: u32)

Append n bits (0..=32) from the low n bits of value, MSB first.

pub fn write_bits(&mut self, value: u32, n: u32)

Alias of Self::write_u32 — some codec crates historically spell this write_bits.

pub fn write_u64(&mut self, value: u64, n: u32)

Append up to 64 bits.

pub fn write_i32(&mut self, value: i32, n: u32)

Append n bits interpreted as a signed integer. Only the low n bits of the 2’s-complement representation are written.

pub fn write_bit(&mut self, bit: bool)

pub fn write_unary(&mut self, n: u32)

Emit a unary-coded value: n zero bits followed by a single 1. Inverse of BitReader::read_unary.

pub fn write_byte(&mut self, b: u8)

pub fn write_bytes(&mut self, bytes: &[u8])

Append a slice of bytes. Fast path when byte-aligned.

pub fn align_to_byte(&mut self)

Pad to the next byte boundary with zero bits.

pub fn align_to_byte_zero(&mut self)

Alias of Self::align_to_byte — MPEG-4 video spells it align_to_byte_zero since the spec also defines alternate align-with-ones tails in other contexts.

pub fn bytes(&self) -> &[u8]

Borrow the bytes accumulated so far (excluding any unflushed partial byte).

pub fn buffer(&self) -> &[u8]

Alias of Self::bytes — some codec crates spell this buffer.

pub fn finish(self) -> Vec<u8>

Pad with zero bits to the next byte boundary, then return the bytes.

pub fn into_bytes(self) -> Vec<u8>

Alias of Self::finish — some codec crates spell this into_bytes.

Trait Implementations

impl Default for BitWriter

fn default() -> Self

Returns the “default value” for a type.