Defines | Functions

/tmp/buildd/xz-utils-5.0.0/src/liblzma/lzma/lzma_encoder.c File Reference

LZMA encoder. More...

#include "lzma2_encoder.h"
#include "lzma_encoder_private.h"
#include "fastpos.h"

Defines

#define LOOP_INPUT_MAX   (OPTS + 1)

Functions

static void literal_matched (lzma_range_encoder *rc, probability *subcoder, uint32_t match_byte, uint32_t symbol)
static void literal (lzma_coder *coder, lzma_mf *mf, uint32_t position)
static void length_update_prices (lzma_length_encoder *lc, const uint32_t pos_state)
static void length (lzma_range_encoder *rc, lzma_length_encoder *lc, const uint32_t pos_state, uint32_t len, const bool fast_mode)
static void match (lzma_coder *coder, const uint32_t pos_state, const uint32_t distance, const uint32_t len)
static void rep_match (lzma_coder *coder, const uint32_t pos_state, const uint32_t rep, const uint32_t len)
static void encode_symbol (lzma_coder *coder, lzma_mf *mf, uint32_t back, uint32_t len, uint32_t position)
static bool encode_init (lzma_coder *coder, lzma_mf *mf)
static void encode_eopm (lzma_coder *coder, uint32_t position)
lzma_ret lzma_lzma_encode (lzma_coder *restrict coder, lzma_mf *restrict mf, uint8_t *restrict out, size_t *restrict out_pos, size_t out_size, uint32_t limit)
static lzma_ret lzma_encode (lzma_coder *restrict coder, lzma_mf *restrict mf, uint8_t *restrict out, size_t *restrict out_pos, size_t out_size)
static bool is_options_valid (const lzma_options_lzma *options)
static void set_lz_options (lzma_lz_options *lz_options, const lzma_options_lzma *options)
static void length_encoder_reset (lzma_length_encoder *lencoder, const uint32_t num_pos_states, const bool fast_mode)
lzma_ret lzma_lzma_encoder_reset (lzma_coder *coder, const lzma_options_lzma *options)
lzma_ret lzma_lzma_encoder_create (lzma_coder **coder_ptr, lzma_allocator *allocator, const lzma_options_lzma *options, lzma_lz_options *lz_options)
static lzma_ret lzma_encoder_init (lzma_lz_encoder *lz, lzma_allocator *allocator, const void *options, lzma_lz_options *lz_options)
lzma_ret lzma_lzma_encoder_init (lzma_next_coder *next, lzma_allocator *allocator, const lzma_filter_info *filters)
uint64_t lzma_lzma_encoder_memusage (const void *options)
bool lzma_lzma_lclppb_encode (const lzma_options_lzma *options, uint8_t *byte)
 Encodes lc/lp/pb into one byte. Returns false on success and true on error.
lzma_bool lzma_mode_is_supported (lzma_mode mode)
 Test if given compression mode is supported.

Detailed Description

LZMA encoder.


Define Documentation

#define LOOP_INPUT_MAX   (OPTS + 1)

Number of bytes that a single encoding loop in lzma_lzma_encode() can consume from the dictionary. This limit comes from lzma_lzma_optimum() and may need to be updated if that function is significantly modified.


Function Documentation

bool lzma_lzma_lclppb_encode ( const lzma_options_lzma options,
uint8_t *  byte 
)

Encodes lc/lp/pb into one byte. Returns false on success and true on error.

References is_lclppb_valid(), lzma_options_lzma::lc, lzma_options_lzma::lp, and lzma_options_lzma::pb.

lzma_bool lzma_mode_is_supported ( lzma_mode  mode  )  const

Test if given compression mode is supported.

Return true if the given compression mode is supported by this liblzma build. Otherwise false is returned. It is safe to call this with a value that isn't listed in lzma_mode enumeration; the return value will be false.

There is no way to list which modes are available in this particular liblzma version and build. It would be useless, because a new compression mode, which the application developer wasn't aware, could require giving additional options to the encoder that the older modes don't need.

References LZMA_MODE_FAST.