| commit | e353940dbb64822eb29f19d6e09b6d864a70213c | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <[email protected]> | Tue Aug 20 17:55:49 2024 +0000 |
| committer | Android Build Coastguard Worker <[email protected]> | Tue Aug 20 17:55:49 2024 +0000 |
| tree | 1c8eccc36849e2176abb7483e40b791c3bceb6fe | |
| parent | 7705c2002d35768bef9f3a449c5f94fac1abef29 [diff] | |
| parent | be041e47196f4f2d0ab8d80f237da6c33cdcb46c [diff] |
Snap for 12252487 from be041e47196f4f2d0ab8d80f237da6c33cdcb46c to simpleperf-release Change-Id: Ieaa46a0baaff7f6bdd6273f53c011ffe727a95b2
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.