JRF63/exp-golomb

exp-golomb

Encoder/decoder for Exponential-Golomb coding.

Using the Wikipedia example:

Number	Bit pattern
0	1
1	010
2	011
3	00100
4	00101
5	00110
6	00111
7	0001000
8	000100

use exp_golomb::{ExpGolombDecoder, ExpGolombEncoder};

let mut buf = [0u8; 6];
let mut writer = ExpGolombEncoder::new(&mut buf, 0).unwrap();
for i in 0..=8 {
    writer.put_unsigned(i).unwrap();
}
writer.close();
    
assert_eq!(
    buf,
    [0b10100110, 0b01000010, 0b10011000, 0b11100010, 0b00000100, 0b10000000]
);

let mut reader = ExpGolombDecoder::new(&buf, 0).unwrap();
for i in 0..=8 {
    assert_eq!(reader.next_unsigned(), Some(i));
}