lzw_read_ctx Struct Reference

Public Attributes
const uint8_t *restrict	data
size_t	data_len
size_t	data_sb_next
const uint8_t *	sb_data
size_t	sb_bit
uint32_t	sb_bit_count

Detailed Description

Context for reading LZW data.

LZW data is split over multiple sub-blocks. Each sub-block has a byte at the start, which says the sub-block size, and then the data. Zero-size sub-blocks have no data, and the biggest sub-block size is 255, which means there are 255 bytes of data following the sub-block size entry.

Note that an individual LZW code can be split over up to three sub-blocks.

Member Data Documentation

data

const uint8_t* restrict lzw_read_ctx::data

Pointer to start of input data

data_len

size_t lzw_read_ctx::data_len

Input data length

data_sb_next

size_t lzw_read_ctx::data_sb_next

Offset to sub-block size

sb_bit

size_t lzw_read_ctx::sb_bit

Current bit offset in sub-block

sb_bit_count

uint32_t lzw_read_ctx::sb_bit_count

Bit count in sub-block

sb_data

const uint8_t* lzw_read_ctx::sb_data

Pointer to current sub-block in data

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The documentation for this struct was generated from the following file:

• XenevaOS/Ports/CssLibs/libnsgif/src/lzw.c