Header specific to General (LZ-based) compression blocks. More...

Data Fields
uint32_t	n_sequences
	The total count of LZ sequences in the block.

uint32_t	n_literals
	The total count of literal bytes.

uint8_t	enc_lit
	Encoding method used for the literal stream.

uint8_t	enc_tok
	GLO only: encoding of the token section, whose bytes each pack a literal length and a match length nibble.

uint8_t	enc_mlen
	Reserved, written 0 and ignored on decode.

uint8_t	enc_off
	GLO only: width of the offset stream (1 = 1-byte, 0 = 2-byte).

Detailed Description

Header specific to General (LZ-based) compression blocks.

This header follows the main block header when the block type is GLO/GHI. It describes the layout of sequences and literals.

Definition at line 1254 of file zxc_internal.h.

Field Documentation

zxc_gnr_header_t::enc_lit

Encoding method used for the literal stream.

Definition at line 1257 of file zxc_internal.h.

zxc_gnr_header_t::enc_mlen

Reserved, written 0 and ignored on decode.

Match lengths have no stream of their own: they share the token byte and spill into the extras.

Definition at line 1259 of file zxc_internal.h.

zxc_gnr_header_t::enc_off

GLO only: width of the offset stream (1 = 1-byte, 0 = 2-byte).

GHI has no offset stream, so it writes 0 and ignores the field on decode.

Definition at line 1260 of file zxc_internal.h.

zxc_gnr_header_t::enc_tok

GLO only: encoding of the token section, whose bytes each pack a literal length and a match length nibble.

Only RAW and HUFFMAN (level 7) occur.

Definition at line 1258 of file zxc_internal.h.

zxc_gnr_header_t::n_literals

The total count of literal bytes.

Definition at line 1256 of file zxc_internal.h.

zxc_gnr_header_t::n_sequences

The total count of LZ sequences in the block.

Definition at line 1255 of file zxc_internal.h.

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