| commit | fbf952a41734e70856d99e6f2642b89b1b78ff49 | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <[email protected]> | Fri Mar 10 05:14:37 2023 +0000 |
| committer | Android Build Coastguard Worker <[email protected]> | Fri Mar 10 05:14:37 2023 +0000 |
| tree | 7442a329d612499cdc5be0c9b778eae0c2dc76d4 | |
| parent | e65d07d15ebfc342e840eb6a6051393a5aad3d0c [diff] | |
| parent | 1a181fd56368bcaceced35071267ca8c82a768a4 [diff] |
Snap for 9722771 from 1a181fd56368bcaceced35071267ca8c82a768a4 to udc-d1-release Change-Id: I12c8375ef18d548a78db52d5775d5da73d433fac
BitReader is a helper type to extract strings of bits from a slice of bytes.
Here is how you read first a single bit, then three bits and finally four bits from a byte buffer:
use bitreader::BitReader; let slice_of_u8 = &[0b1000_1111]; let mut reader = BitReader::new(slice_of_u8); // You obviously should use try! or some other error handling mechanism here let a_single_bit = reader.read_u8(1).unwrap(); // 1 let more_bits = reader.read_u8(3).unwrap(); // 0 let last_bits_of_byte = reader.read_u8(4).unwrap(); // 0b1111
You can naturally read bits from longer buffer of data than just a single byte.
As you read bits, the internal cursor of BitReader moves on along the stream of bits. Big endian format is assumed when reading the multi-byte values. BitReader supports reading maximum of 64 bits at a time (with read_u64).
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.