| commit | cc868277d08638dd22fd2ef5b63fe07263193168 | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Mon Aug 05 23:11:56 2024 +0000 |
| committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Mon Aug 05 23:11:56 2024 +0000 |
| tree | ffb83a43f8d33665c862fd957397b2e0a0d3ad5d | |
| parent | af3226202c2bb33088594f13ac40d3711563b839 [diff] | |
| parent | 88e77a15e7a4c3f8349f9548b08057b42f280f4d [diff] |
Snap for 12184966 from 88e77a15e7a4c3f8349f9548b08057b42f280f4d to 25D4-release Change-Id: I1f9ffc3f8e4a4042828df93b2056a62c1b9776e0
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.