constants.h(3) Library Functions Manual constants.h(3)
NAME
constants.h - Common constants used in decoder and encoder API.
SYNOPSIS
Macros
#define BROTLI_LARGE_MAX_DISTANCE_BITS 62U
The theoretical maximum number of distance bits specified for large
window brotli, for 64-bit encoders and decoders.
#define BROTLI_LARGE_MAX_WBITS 30
The maximum supported large brotli window bits by the encoder and
decoder.
#define BROTLI_MAX_NPOSTFIX 3
Maximal number of 'postfix' bits.
Detailed Description
Common constants used in decoder and encoder API.
Macro Definition Documentation
#define BROTLI_LARGE_MAX_DISTANCE_BITS 62U
The theoretical maximum number of distance bits specified for large
window brotli, for 64-bit encoders and decoders. Even when in practice
32-bit encoders and decoders only support up to 30 max distance bits,
the value is set to 62 because it affects the large window brotli file
format. Specifically, it affects the encoding of simple huffman tree
for distances, see Specification RFC 7932 chapter 3.4.
#define BROTLI_LARGE_MAX_WBITS 30
The maximum supported large brotli window bits by the encoder and
decoder. Large window brotli allows up to 62 bits, however the current
encoder and decoder, designed for 32-bit integers, only support up to
30 bits maximum.
#define BROTLI_MAX_NPOSTFIX 3
Maximal number of 'postfix' bits. Number of 'postfix' bits is stored as
2 bits in meta-block header.
Author
Generated automatically by Doxygen for Brotli from the source code.
Brotli August 2021 constants.h(3)
brotli 1.2.0 - Generated Tue Nov 25 09:02:05 CST 2025