#ifdef ENABLE_LZMS_DEBUG
# define LZMS_DEBUG DEBUG
# define LZMS_ASSERT wimlib_assert
+# include "wimlib/assert.h"
+# include "wimlib/error.h"
#else
# define LZMS_DEBUG(format, ...)
# define LZMS_ASSERT(...)
/* Code shared between the LZMS decompressor and compressor. */
-#include <wimlib/types.h>
+#include <wimlib/util.h>
extern void
lzms_x86_filter(u8 data[], s32 size, s32 last_target_usages[], bool undo);
extern u32 lzms_position_slot_base[LZMS_MAX_NUM_OFFSET_SYMS + 1];
+extern u8 lzms_extra_position_bits[LZMS_MAX_NUM_OFFSET_SYMS];
+
+extern u16 lzms_order_to_position_slot_bounds[30][2];
+
extern u32 lzms_length_slot_base[LZMS_NUM_LEN_SYMS + 1];
+#define LZMS_NUM_FAST_LENGTHS 1024
+extern u8 lzms_length_slot_fast[LZMS_NUM_FAST_LENGTHS];
+
+extern u8 lzms_extra_length_bits[LZMS_NUM_LEN_SYMS];
+
extern void
-lzms_init_slot_bases(void);
+lzms_init_slots(void);
+/* Return the slot for the specified value. */
extern u32
-lzms_get_slot(u32 value, const u32 slot_base_tab[], unsigned num_slots);
+lzms_get_slot(u32 value, const u32 slot_base_tab[], u32 num_slots);
static inline u32
-lzms_get_position_slot(u32 value)
+lzms_get_position_slot(u32 position)
{
- return lzms_get_slot(value, lzms_position_slot_base,
- LZMS_MAX_NUM_OFFSET_SYMS);
+ u32 order = bsr32(position);
+ u32 l = lzms_order_to_position_slot_bounds[order][0];
+ u32 r = lzms_order_to_position_slot_bounds[order][1];
+
+ for (;;) {
+ u32 slot = (l + r) / 2;
+ if (position >= lzms_position_slot_base[slot]) {
+ if (position < lzms_position_slot_base[slot + 1])
+ return slot;
+ else
+ l = slot + 1;
+ } else {
+ r = slot - 1;
+ }
+ }
}
static inline u32
-lzms_get_length_slot(u32 value)
+lzms_get_length_slot(u32 length)
{
- return lzms_get_slot(value, lzms_length_slot_base,
- LZMS_NUM_LEN_SYMS);
+ if (likely(length < LZMS_NUM_FAST_LENGTHS))
+ return lzms_length_slot_fast[length];
+ else
+ return lzms_get_slot(length, lzms_length_slot_base,
+ LZMS_NUM_LEN_SYMS);
}
extern void
#endif
#include "wimlib/endianness.h"
-#include "wimlib/error.h"
#include "wimlib/lzms.h"
#include "wimlib/util.h"
#include <pthread.h>
-/* A table that maps position slots to their base values. These are constants
- * computed at runtime by lzms_compute_slot_bases(). */
+/***************************************************************
+ * Constant tables initialized by lzms_compute_slots(): *
+ ***************************************************************/
+
+/* Table: position slot => position slot base value */
u32 lzms_position_slot_base[LZMS_MAX_NUM_OFFSET_SYMS + 1];
-/* A table that maps length slots to their base values. These are constants
- * computed at runtime by lzms_compute_slot_bases(). */
+/* Table: position slot => number of extra position bits */
+u8 lzms_extra_position_bits[LZMS_MAX_NUM_OFFSET_SYMS];
+
+/* Table: log2(position) => [lower bound, upper bound] on position slot */
+u16 lzms_order_to_position_slot_bounds[30][2];
+
+/* Table: length slot => length slot base value */
u32 lzms_length_slot_base[LZMS_NUM_LEN_SYMS + 1];
-/* Return the slot for the specified value. */
-unsigned
-lzms_get_slot(u32 value, const u32 slot_base_tab[], unsigned num_slots)
-{
- /* TODO: Speed this up. */
- unsigned slot = 0;
+/* Table: length slot => number of extra length bits */
+u8 lzms_extra_length_bits[LZMS_NUM_LEN_SYMS];
- while (slot_base_tab[slot + 1] <= value)
- slot++;
+/* Table: length (< LZMS_NUM_FAST_LENGTHS only) => length slot */
+u8 lzms_length_slot_fast[LZMS_NUM_FAST_LENGTHS];
- return slot;
+u32
+lzms_get_slot(u32 value, const u32 slot_base_tab[], unsigned num_slots)
+{
+ u32 l = 0;
+ u32 r = num_slots - 1;
+ for (;;) {
+ LZMS_ASSERT(r >= l);
+ u32 slot = (l + r) / 2;
+ if (value >= slot_base_tab[slot]) {
+ if (value < slot_base_tab[slot + 1])
+ return slot;
+ else
+ l = slot + 1;
+ } else {
+ r = slot - 1;
+ }
+ }
}
-
static void
lzms_decode_delta_rle_slot_bases(u32 slot_bases[],
- const u8 delta_run_lens[], size_t num_run_lens)
+ u8 extra_bits[],
+ const u8 delta_run_lens[],
+ u32 num_run_lens,
+ u32 final,
+ u32 expected_num_slots)
{
+ u32 order = 0;
u32 delta = 1;
u32 base = 0;
- size_t slot = 0;
- for (size_t i = 0; i < num_run_lens; i++) {
+ u32 slot = 0;
+ for (u32 i = 0; i < num_run_lens; i++) {
u8 run_len = delta_run_lens[i];
while (run_len--) {
base += delta;
- slot_bases[slot++] = base;
+ if (slot > 0)
+ extra_bits[slot - 1] = order;
+ slot_bases[slot] = base;
+ slot++;
}
delta <<= 1;
+ order++;
}
+ LZMS_ASSERT(slot == expected_num_slots);
+
+ slot_bases[slot] = final;
+ extra_bits[slot - 1] = bsr32(slot_bases[slot] - slot_bases[slot - 1]);
}
/* Initialize the global position and length slot tables. */
static void
-lzms_compute_slot_bases(void)
+lzms_compute_slots(void)
{
/* If an explicit formula that maps LZMS position and length slots to
* slot bases exists, then it could be used here. But until one is
1,
};
+ /* Position slots */
lzms_decode_delta_rle_slot_bases(lzms_position_slot_base,
+ lzms_extra_position_bits,
position_slot_delta_run_lens,
- ARRAY_LEN(position_slot_delta_run_lens));
-
- lzms_position_slot_base[LZMS_MAX_NUM_OFFSET_SYMS] = 0x7fffffff;
+ ARRAY_LEN(position_slot_delta_run_lens),
+ 0x7fffffff,
+ LZMS_MAX_NUM_OFFSET_SYMS);
+
+ for (u32 order = 0; order < 30; order++) {
+ lzms_order_to_position_slot_bounds[order][0] =
+ lzms_get_slot(1U << order, lzms_position_slot_base,
+ LZMS_MAX_NUM_OFFSET_SYMS);
+ lzms_order_to_position_slot_bounds[order][1] =
+ lzms_get_slot((1U << (order + 1)) - 1, lzms_position_slot_base,
+ LZMS_MAX_NUM_OFFSET_SYMS);
+ }
+ /* Length slots */
lzms_decode_delta_rle_slot_bases(lzms_length_slot_base,
+ lzms_extra_length_bits,
length_slot_delta_run_lens,
- ARRAY_LEN(length_slot_delta_run_lens));
-
- lzms_length_slot_base[LZMS_NUM_LEN_SYMS] = 0x400108ab;
+ ARRAY_LEN(length_slot_delta_run_lens),
+ 0x400108ab,
+ LZMS_NUM_LEN_SYMS);
+
+ /* Create table mapping short lengths to length slots. */
+ for (u32 slot = 0, i = 0; i < LZMS_NUM_FAST_LENGTHS; i++) {
+ if (i >= lzms_length_slot_base[slot + 1])
+ slot++;
+ lzms_length_slot_fast[i] = slot;
+ }
}
-/* Initialize the global position length slot tables if not done so already. */
+/* Initialize the global position and length slot tables if not done so already.
+ * */
void
-lzms_init_slot_bases(void)
+lzms_init_slots(void)
{
+ static bool done = false;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
- static bool already_computed = false;
- if (unlikely(!already_computed)) {
+ if (unlikely(!done)) {
pthread_mutex_lock(&mutex);
- if (!already_computed) {
- lzms_compute_slot_bases();
- already_computed = true;
+ if (!done) {
+ lzms_compute_slots();
+ done = true;
}
pthread_mutex_unlock(&mutex);
}
static void
lzms_init_lz_lru_queues(struct lzms_lz_lru_queues *lz)
{
- /* Recent offsets for LZ matches */
+ /* Recent offsets for LZ matches */
for (u32 i = 0; i < LZMS_NUM_RECENT_OFFSETS + 1; i++)
lz->recent_offsets[i] = i + 1;
static void
lzms_init_delta_lru_queues(struct lzms_delta_lru_queues *delta)
{
- /* Recent offsets and powers for LZ matches */
+ /* Recent offsets and powers for LZ matches */
for (u32 i = 0; i < LZMS_NUM_RECENT_OFFSETS + 1; i++) {
delta->recent_offsets[i] = i + 1;
delta->recent_powers[i] = 0;
void
lzms_init_lru_queues(struct lzms_lru_queues *lru)
{
- lzms_init_lz_lru_queues(&lru->lz);
- lzms_init_delta_lru_queues(&lru->delta);
+ lzms_init_lz_lru_queues(&lru->lz);
+ lzms_init_delta_lru_queues(&lru->delta);
}
void
void
lzms_update_lru_queues(struct lzms_lru_queues *lru)
{
- lzms_update_lz_lru_queues(&lru->lz);
- lzms_update_delta_lru_queues(&lru->delta);
+ lzms_update_lz_lru_queues(&lru->lz);
+ lzms_update_delta_lru_queues(&lru->delta);
}
#endif
#include "wimlib.h"
-#include "wimlib/assert.h"
#include "wimlib/compiler.h"
#include "wimlib/compressor_ops.h"
#include "wimlib/compress_common.h"
struct lzms_probability_entry prob_entries[LZMS_MAX_NUM_STATES];
};
-/* Structure used for Huffman encoding, optionally encoding larger "values" as a
- * Huffman symbol specifying a slot and a slot-dependent number of extra bits.
- * */
+/* Structure used for Huffman encoding. */
struct lzms_huffman_encoder {
/* Bitstream to write Huffman-encoded symbols and verbatim bits to.
*/
struct lzms_output_bitstream *os;
- /* Pointer to the slot base table to use. */
- const u32 *slot_base_tab;
-
/* Number of symbols that have been written using this code far. Reset
* to 0 whenever the code is rebuilt. */
u32 num_syms_written;
/* Suffix array match-finder. */
struct lz_sarray lz_sarray;
- struct raw_match matches[64];
+ /* Temporary space to store found matches. */
+ struct raw_match *matches;
/* Match-chooser. */
struct lz_match_chooser mc;
}
}
-/* Encode a number as a Huffman symbol specifying a slot, plus a number of
- * slot-dependent extra bits. */
static void
-lzms_encode_value(struct lzms_huffman_encoder *enc, u32 value)
+lzms_encode_length(struct lzms_huffman_encoder *enc, u32 length)
{
unsigned slot;
unsigned num_extra_bits;
u32 extra_bits;
- LZMS_ASSERT(enc->slot_base_tab != NULL);
+ slot = lzms_get_length_slot(length);
- slot = lzms_get_slot(value, enc->slot_base_tab, enc->num_syms);
+ num_extra_bits = lzms_extra_length_bits[slot];
- /* Get the number of extra bits needed to represent the range of values
- * that share the slot. */
- num_extra_bits = bsr32(enc->slot_base_tab[slot + 1] -
- enc->slot_base_tab[slot]);
+ extra_bits = length - lzms_length_slot_base[slot];
- /* Calculate the extra bits as the offset from the slot base. */
- extra_bits = value - enc->slot_base_tab[slot];
+ lzms_huffman_encode_symbol(enc, slot);
+ lzms_output_bitstream_put_bits(enc->os, extra_bits, num_extra_bits);
+}
+
+static void
+lzms_encode_offset(struct lzms_huffman_encoder *enc, u32 offset)
+{
+ unsigned slot;
+ unsigned num_extra_bits;
+ u32 extra_bits;
+
+ slot = lzms_get_position_slot(offset);
+
+ num_extra_bits = lzms_extra_position_bits[slot];
+
+ extra_bits = offset - lzms_position_slot_base[slot];
- /* Output the slot (Huffman-encoded), then the extra bits (verbatim).
- */
lzms_huffman_encode_symbol(enc, slot);
lzms_output_bitstream_put_bits(enc->os, extra_bits, num_extra_bits);
}
lzms_range_encode_bit(&ctx->lz_match_range_encoder, 0);
/* Encode the match offset. */
- lzms_encode_value(&ctx->lz_offset_encoder, offset);
+ lzms_encode_offset(&ctx->lz_offset_encoder, offset);
} else {
int i;
}
/* Encode the match length. */
- lzms_encode_value(&ctx->length_encoder, length);
+ lzms_encode_length(&ctx->length_encoder, length);
/* Save the match offset for later insertion at the front of the LZ
* match offset LRU queue. */
/*#define LZMS_RC_COSTS_USE_FLOATING_POINT*/
static u32
-lzms_rc_costs[LZMS_PROBABILITY_MAX];
+lzms_rc_costs[LZMS_PROBABILITY_MAX + 1];
#ifdef LZMS_RC_COSTS_USE_FLOATING_POINT
# include <math.h>
* really interpreted as 1 / 64 and 64 / 64 is really interpreted as
* 63 / 64.
*/
- for (u32 i = 0; i < LZMS_PROBABILITY_MAX; i++) {
+ for (u32 i = 0; i <= LZMS_PROBABILITY_MAX; i++) {
u32 prob = i;
if (prob == 0)
static bool done = false;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
- if (!done) {
+ if (unlikely(!done)) {
pthread_mutex_lock(&mutex);
if (!done) {
lzms_do_init_rc_costs();
*cur_state = (*cur_state << 1) | bit;
- if (prob_zero == 0)
- prob_zero = 1;
- else if (prob_zero == LZMS_PROBABILITY_MAX)
- prob_zero = LZMS_PROBABILITY_MAX - 1;
-
if (bit == 0)
prob_correct = prob_zero;
else
return enc->lens[sym] << LZMS_COST_SHIFT;
}
-/* Compute the cost to encode a number with lzms_encode_value(). */
static u32
-lzms_value_cost(const struct lzms_huffman_encoder *enc, u32 value)
+lzms_offset_cost(const struct lzms_huffman_encoder *enc, u32 offset)
{
u32 slot;
u32 num_extra_bits;
u32 cost = 0;
- slot = lzms_get_slot(value, enc->slot_base_tab, enc->num_syms);
+ slot = lzms_get_position_slot(offset);
cost += lzms_huffman_symbol_cost(enc, slot);
- num_extra_bits = bsr32(enc->slot_base_tab[slot + 1] -
- enc->slot_base_tab[slot]);
+ num_extra_bits = lzms_extra_position_bits[slot];
cost += num_extra_bits << LZMS_COST_SHIFT;
}
static u32
-lzms_get_matches(struct lzms_compressor *ctx,
- const struct lzms_adaptive_state *state,
- struct raw_match **matches_ret)
+lzms_length_cost(const struct lzms_huffman_encoder *enc, u32 length)
{
- u32 num_matches;
- struct raw_match *matches = ctx->matches;
+ u32 slot;
+ u32 num_extra_bits;
+ u32 cost = 0;
- num_matches = lz_sarray_get_matches(&ctx->lz_sarray,
- matches,
- lzms_lz_match_cost_fast,
- &state->lru);
-#if 0
- fprintf(stderr, "Pos %u: %u matches\n",
- lz_sarray_get_pos(&ctx->lz_sarray) - 1, num_matches);
- for (u32 i = 0; i < num_matches; i++)
- fprintf(stderr, "\tLen %u Offset %u\n", matches[i].len, matches[i].offset);
-#endif
+ slot = lzms_get_length_slot(length);
-#ifdef ENABLE_LZMS_DEBUG
- LZMS_ASSERT(lz_sarray_get_pos(&ctx->lz_sarray) > 0);
- u32 curpos = lz_sarray_get_pos(&ctx->lz_sarray) - 1;
- for (u32 i = 0; i < num_matches; i++) {
- LZMS_ASSERT(matches[i].len <= ctx->window_size - curpos);
- LZMS_ASSERT(matches[i].offset > 0);
- LZMS_ASSERT(matches[i].offset <= curpos);
- LZMS_ASSERT(!memcmp(&ctx->window[curpos],
- &ctx->window[curpos - matches[i].offset],
- matches[i].len));
- if (i < num_matches - 1)
- LZMS_ASSERT(matches[i].len > matches[i + 1].len);
+ cost += lzms_huffman_symbol_cost(enc, slot);
- }
-#endif
- *matches_ret = matches;
- return num_matches;
+ num_extra_bits = lzms_extra_length_bits[slot];
+
+ cost += num_extra_bits << LZMS_COST_SHIFT;
+
+ return cost;
+}
+
+static u32
+lzms_get_matches(struct lzms_compressor *ctx,
+ const struct lzms_adaptive_state *state,
+ struct raw_match **matches_ret)
+{
+ *matches_ret = ctx->matches;
+ return lz_sarray_get_matches(&ctx->lz_sarray,
+ ctx->matches,
+ lzms_lz_match_cost_fast,
+ &state->lru);
}
static void
cost += lzms_rc_bit_cost(&ctx->lz_match_range_encoder,
&state->lz_match_state, 0);
- cost += lzms_value_cost(&ctx->lz_offset_encoder, offset);
+ cost += lzms_offset_cost(&ctx->lz_offset_encoder, offset);
} else {
int i;
state->lru.recent_offsets[i] = state->lru.recent_offsets[i + 1];
}
- cost += lzms_value_cost(&ctx->length_encoder, length);
+ cost += lzms_length_cost(&ctx->length_encoder, length);
state->lru.upcoming_offset = offset;
lzms_update_lz_lru_queues(&state->lru);
static void
lzms_init_huffman_encoder(struct lzms_huffman_encoder *enc,
struct lzms_output_bitstream *os,
- const u32 *slot_base_tab,
unsigned num_syms,
unsigned rebuild_freq)
{
enc->os = os;
- enc->slot_base_tab = slot_base_tab;
enc->num_syms_written = 0;
enc->rebuild_freq = rebuild_freq;
enc->num_syms = num_syms;
/* Initialize Huffman encoders for each alphabet used in the compressed
* representation. */
lzms_init_huffman_encoder(&ctx->literal_encoder, &ctx->os,
- NULL, LZMS_NUM_LITERAL_SYMS,
+ LZMS_NUM_LITERAL_SYMS,
LZMS_LITERAL_CODE_REBUILD_FREQ);
lzms_init_huffman_encoder(&ctx->lz_offset_encoder, &ctx->os,
- lzms_position_slot_base, num_position_slots,
+ num_position_slots,
LZMS_LZ_OFFSET_CODE_REBUILD_FREQ);
lzms_init_huffman_encoder(&ctx->length_encoder, &ctx->os,
- lzms_length_slot_base, LZMS_NUM_LEN_SYMS,
+ LZMS_NUM_LEN_SYMS,
LZMS_LENGTH_CODE_REBUILD_FREQ);
lzms_init_huffman_encoder(&ctx->delta_offset_encoder, &ctx->os,
- lzms_position_slot_base, num_position_slots,
+ num_position_slots,
LZMS_DELTA_OFFSET_CODE_REBUILD_FREQ);
lzms_init_huffman_encoder(&ctx->delta_power_encoder, &ctx->os,
- NULL, LZMS_NUM_DELTA_POWER_SYMS,
+ LZMS_NUM_DELTA_POWER_SYMS,
LZMS_DELTA_POWER_CODE_REBUILD_FREQ);
/* Initialize range encoders, all of which wrap around the same
&ctx->rc, LZMS_NUM_DELTA_REPEAT_MATCH_STATES);
/* Initialize LRU match information. */
- lzms_init_lru_queues(&ctx->lru);
+ lzms_init_lru_queues(&ctx->lru);
}
/* Flush the output streams, prepare the final compressed data, and return its
/* Compute and encode a literal/match sequence that decompresses to the
* preprocessed data. */
+#if 1
lzms_normal_encode(ctx);
-#if 0
+#else
lzms_fast_encode(ctx);
#endif
#if 0
FREE(ctx->prev_tab);
#endif
+ FREE(ctx->matches);
lz_sarray_destroy(&ctx->lz_sarray);
lz_match_chooser_destroy(&ctx->mc);
FREE(ctx);
goto oom;
#endif
+ ctx->matches = MALLOC(min(params->max_match_length -
+ params->min_match_length + 1,
+ params->max_matches_per_pos) *
+ sizeof(ctx->matches[0]));
+ if (ctx->matches == NULL)
+ goto oom;
+
if (!lz_sarray_init(&ctx->lz_sarray, max_block_size,
params->min_match_length,
params->max_match_length,
params->max_match_length))
goto oom;
- /* Initialize position and length slot bases if not done already. */
- lzms_init_slot_bases();
+ /* Initialize position and length slot data if not done already. */
+ lzms_init_slots();
/* Initialize range encoding cost table if not done already. */
lzms_init_rc_costs();
#include "wimlib/compress_common.h"
#include "wimlib/decompressor_ops.h"
#include "wimlib/decompress_common.h"
-#include "wimlib/error.h"
#include "wimlib/lzms.h"
#include "wimlib/util.h"
* read using this decoder. */
const u32 *slot_base_tab;
+ const u8 *extra_bits_tab;
+
/* Number of symbols that have been read using this code far. Reset to
* 0 whenever the code is rebuilt. */
u32 num_syms_read;
unsigned num_extra_bits;
u32 extra_bits;
+ LZMS_ASSERT(dec->slot_base_tab != NULL);
+ LZMS_ASSERT(dec->extra_bits_tab != NULL);
+
/* Read the slot (position slot, length slot, etc.), which is encoded as
* a Huffman symbol. */
slot = lzms_huffman_decode_symbol(dec);
- LZMS_ASSERT(dec->slot_base_tab != NULL);
-
/* Get the number of extra bits needed to represent the range of values
* that share the slot. */
- num_extra_bits = bsr32(dec->slot_base_tab[slot + 1] -
- dec->slot_base_tab[slot]);
+ num_extra_bits = dec->extra_bits_tab[slot];
- /* Read the number of extra bits and add them to the slot to form the
- * final decoded value. */
+ /* Read the number of extra bits and add them to the slot base to form
+ * the final decoded value. */
extra_bits = lzms_input_bitstream_read_bits(dec->is, num_extra_bits);
return dec->slot_base_tab[slot] + extra_bits;
}
static void
lzms_init_huffman_decoder(struct lzms_huffman_decoder *dec,
struct lzms_input_bitstream *is,
- const u32 *slot_base_tab, unsigned num_syms,
+ const u32 *slot_base_tab,
+ const u8 *extra_bits_tab,
+ unsigned num_syms,
unsigned rebuild_freq)
{
dec->is = is;
dec->slot_base_tab = slot_base_tab;
+ dec->extra_bits_tab = extra_bits_tab;
dec->num_syms = num_syms;
dec->num_syms_read = rebuild_freq;
dec->rebuild_freq = rebuild_freq;
/* Initialize Huffman decoders for each alphabet used in the compressed
* representation. */
lzms_init_huffman_decoder(&ctx->literal_decoder, &ctx->is,
- NULL, LZMS_NUM_LITERAL_SYMS,
+ NULL, NULL, LZMS_NUM_LITERAL_SYMS,
LZMS_LITERAL_CODE_REBUILD_FREQ);
lzms_init_huffman_decoder(&ctx->lz_offset_decoder, &ctx->is,
- lzms_position_slot_base, num_position_slots,
+ lzms_position_slot_base,
+ lzms_extra_position_bits,
+ num_position_slots,
LZMS_LZ_OFFSET_CODE_REBUILD_FREQ);
lzms_init_huffman_decoder(&ctx->length_decoder, &ctx->is,
- lzms_length_slot_base, LZMS_NUM_LEN_SYMS,
+ lzms_length_slot_base,
+ lzms_extra_length_bits,
+ LZMS_NUM_LEN_SYMS,
LZMS_LENGTH_CODE_REBUILD_FREQ);
lzms_init_huffman_decoder(&ctx->delta_offset_decoder, &ctx->is,
- lzms_position_slot_base, num_position_slots,
+ lzms_position_slot_base,
+ lzms_extra_position_bits,
+ num_position_slots,
LZMS_DELTA_OFFSET_CODE_REBUILD_FREQ);
lzms_init_huffman_decoder(&ctx->delta_power_decoder, &ctx->is,
- NULL, LZMS_NUM_DELTA_POWER_SYMS,
+ NULL, NULL, LZMS_NUM_DELTA_POWER_SYMS,
LZMS_DELTA_POWER_CODE_REBUILD_FREQ);
if (ctx == NULL)
return WIMLIB_ERR_NOMEM;
- /* Initialize position and length slot bases if not done already. */
- lzms_init_slot_bases();
+ /* Initialize position and length slot data if not done already. */
+ lzms_init_slots();
*ctx_ret = ctx;
return 0;
git://wimlib.net / wimlib / commitdiff