lzma_decoder.c File Reference

LZMA decoder. More...

#include "lz_decoder.h"
#include "lzma_common.h"
#include "lzma_decoder.h"
#include "range_decoder.h"

Data Structures
struct	lzma_length_decoder
	Length decoder probabilities; see comments in lzma_common.h. More...
struct	lzma_coder_s

Macros
#define	seq_4(seq)
#define	seq_6(seq)
#define	seq_8(seq)
#define	seq_len(seq)
#define	len_decode(target, ld, pos_state, seq)
#define	d(seq)

Functions
static lzma_ret	lzma_decode (lzma_coder *restrict coder, lzma_dict *restrict dictptr, const uint8_t *restrict in, size_t *restrict in_pos, size_t in_size)
static void	lzma_decoder_uncompressed (lzma_coder *coder, lzma_vli uncompressed_size)
static void	lzma_decoder_reset (lzma_coder *coder, const void *opt)
lzma_ret	lzma_lzma_decoder_create (lzma_lz_decoder *lz, lzma_allocator *allocator, const void *opt, lzma_lz_options *lz_options)
static lzma_ret	lzma_decoder_init (lzma_lz_decoder *lz, lzma_allocator *allocator, const void *options, lzma_lz_options *lz_options)
lzma_ret	lzma_lzma_decoder_init (lzma_next_coder *next, lzma_allocator *allocator, const lzma_filter_info *filters)
	Allocates and initializes LZMA decoder. More...
bool	lzma_lzma_lclppb_decode (lzma_options_lzma *options, uint8_t byte)
	Decodes the LZMA Properties byte (lc/lp/pb) More...
uint64_t	lzma_lzma_decoder_memusage_nocheck (const void *options)
uint64_t	lzma_lzma_decoder_memusage (const void *options)
lzma_ret	lzma_lzma_props_decode (void **options, lzma_allocator *allocator, const uint8_t *props, size_t props_size)

Detailed Description

LZMA decoder.

Macro Definition Documentation

#define seq_4

(

seq

)

Value:

seq ## 0, \
        seq ## 1, \
        seq ## 2, \
        seq ## 3

#define seq_6

(

seq

)

Value:

seq ## 0, \
        seq ## 1, \
        seq ## 2, \
        seq ## 3, \
        seq ## 4, \
        seq ## 5

#define seq_8

(

seq

)

Value:

seq ## 0, \
        seq ## 1, \
        seq ## 2, \
        seq ## 3, \
        seq ## 4, \
        seq ## 5, \
        seq ## 6, \
        seq ## 7

#define seq_len

(

seq

)

Value:

seq ## _CHOICE, \
        seq ## _LOW0, \
        seq ## _LOW1, \
        seq ## _LOW2, \
        seq ## _CHOICE2, \
        seq ## _MID0, \
        seq ## _MID1, \
        seq ## _MID2, \
        seq ## _HIGH0, \
        seq ## _HIGH1, \
        seq ## _HIGH2, \
        seq ## _HIGH3, \
        seq ## _HIGH4, \
        seq ## _HIGH5, \
        seq ## _HIGH6, \
        seq ## _HIGH7

#define d

(

seq

)

Value:

case seq: \
                        match_bit = len & offset; \
                        subcoder_index = offset + match_bit + symbol; \
			rc_bit(probs[subcoder_index], \
                                        offset &= ~match_bit, \
                                        offset &= match_bit, \
                                        seq)

Function Documentation

static lzma_ret lzma_decoder_init ( lzma_lz_decoder *  lz, lzma_allocator *  allocator, const void *  options, lzma_lz_options *  lz_options  )

static

Allocate and initialize LZMA decoder. This is used only via LZ initialization (lzma_lzma_decoder_init() passes function pointer to the LZ initialization).

References lzma_lz_decoder::coder, is_lclppb_valid(), LZMA_OK, LZMA_PROG_ERROR, LZMA_VLI_UNKNOWN, and return_if_error.

Referenced by lzma_lzma_decoder_init().

lzma_ret lzma_lzma_decoder_init	(	lzma_next_coder *	next,
		lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Allocates and initializes LZMA decoder.

References lzma_decoder_init().

bool lzma_lzma_lclppb_decode	(	lzma_options_lzma *	options,
		uint8_t	byte
	)

Decodes the LZMA Properties byte (lc/lp/pb)

Returns

true if error occurred, false on success

References lzma_options_lzma::lc, lzma_options_lzma::lp, and lzma_options_lzma::pb.