| commit | ede07e8bb6f9f99254d7c5bdcbd69a4ee35a126b | [log] [tgz] |
|---|---|---|
| author | Bob Badour <bbadour@google.com> | Thu Nov 10 10:45:51 2022 -0800 |
| committer | Bob Badour <bbadour@google.com> | Thu Nov 10 10:45:51 2022 -0800 |
| tree | 0315c43dc2764a132e7916559c45799800926c81 | |
| parent | 136ae3951bf690355da407638dda0be7f9d546ff [diff] |
[LSC] Add LOCAL_LICENSE_KINDS to external/rust/crates/bitreader Added SPDX-license-identifier-Apache-2.0 to: Android.bp Bug: 68860345 Bug: 151177513 Bug: 151953481 Test: m all Change-Id: I93cbb51ca1ec03a635c992073acc3a78f1256629
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.