| commit | 2c27d32545832c8313b809cf9f78b1739e5cb8ae | [log] [tgz] |
|---|---|---|
| author | Sam Saccone <samccone@google.com> | Tue Jul 18 23:44:20 2023 +0000 |
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Tue Jul 18 23:44:20 2023 +0000 |
| tree | f0a5b7a4f0d5ae219f8715f82bb8104c93366153 | |
| parent | 686a2f18e1d0345e74dec3c147d7782571d5293c [diff] | |
| parent | 1088fee605e28e0b20b42f942f754c2736ed932d [diff] |
Move OWNER reference master=>main. am: 04b0618eba am: 282663bf5e am: 6cd15466f5 am: e4bab47a11 am: 1088fee605 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitreader/+/2661152 Change-Id: I7d26eb8f05a87ab55f55b07cd012c1cb5cee24ed Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
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.