| commit | a0a2c18f8cf945c12511e13618061ce511eac63c | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Fri Oct 20 03:18:52 2023 +0000 |
| committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Fri Oct 20 03:18:52 2023 +0000 |
| tree | 935b8af9ba613989a098688ec3ebb43d5737e071 | |
| parent | 2c27d32545832c8313b809cf9f78b1739e5cb8ae [diff] | |
| parent | 22f0cec5eb9a104189d341a48ceba24ac9b7a4cc [diff] |
Snap for 10975086 from 22f0cec5eb9a104189d341a48ceba24ac9b7a4cc to 24Q1-release Change-Id: I7310b651fa89c5448d563e519637001731c90eee
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.