Struct rxing::common::BitSource

pub struct BitSource { /* private fields */ }

This provides an easy abstraction to read bits at a time from a sequence of bytes, where the number of bits read is not often a multiple of 8.

This class is thread-safe but not reentrant -- unless the caller modifies the bytes array it passed in, in which case all bets are off.

@author Sean Owen

Implementations

impl BitSource

pub fn new(bytes: Vec<u8>) -> Self

@param bytes bytes from which this will read bits. Bits will be read from the first byte first. Bits are read within a byte from most-significant to least-significant bit.

pub fn getBitOffset(&self) -> usize

@return index of next bit in current byte which would be read by the next call to {@link #readBits(int)}.

pub fn getByteOffset(&self) -> usize

@return index of next byte in input byte array which would be read by the next call to {@link #readBits(int)}.

pub fn readBits(&mut self, numBits: usize) -> Result<u32>

@param numBits number of bits to read @return int representing the bits read. The bits will appear as the least-significant bits of the int @throws IllegalArgumentException if numBits isn’t in [1,32] or more than is available

pub fn peak_bits(&self, numBits: usize) -> Result<u32>

pub fn available(&self) -> usize

@return number of bits that can be read successfully