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Referencia del Archivo src/qt/src/3rdparty/zlib/trees.c
#include "deflate.h"

Clases

struct  static_tree_desc_s

'defines'

#define MAX_BL_BITS   7
#define END_BLOCK   256
#define REP_3_6   16
#define REPZ_3_10   17
#define REPZ_11_138   18
#define Buf_size   (8 * 2*sizeof(char))
#define DIST_CODE_LEN   512
#define send_code(s, c, tree)   send_bits(s, tree[c].Code, tree[c].Len)
#define put_short(s, w)
#define send_bits(s, value, length)
#define SMALLEST   1
#define pqremove(s, tree, top)
#define smaller(tree, n, m, depth)

Funciones

local void tr_static_init OF ((void))
local void init_block OF ((deflate_state *s))
local void pqdownheap OF ((deflate_state *s, ct_data *tree, int k))
local void gen_bitlen OF ((deflate_state *s, tree_desc *desc))
local void gen_codes OF ((ct_data *tree, int max_code, ushf *bl_count))
local void scan_tree OF ((deflate_state *s, ct_data *tree, int max_code))
local void send_all_trees OF ((deflate_state *s, int lcodes, int dcodes, int blcodes))
local void compress_block OF ((deflate_state *s, ct_data *ltree, ct_data *dtree))
local unsigned bi_reverse OF ((unsigned value, int length))
local void copy_block OF ((deflate_state *s, charf *buf, unsigned len, int header))
local void tr_static_init ()
void _tr_init (deflate_state *s)
local void init_block (deflate_state *s)
local void pqdownheap (deflate_state *s, ct_data *tree, int k)
local void gen_bitlen (deflate_state *s, tree_desc *desc)
local void gen_codes (ct_data *tree, int max_code, ushf *bl_count)
local void build_tree (deflate_state *s, tree_desc *desc)
local void scan_tree (deflate_state *s, ct_data *tree, int max_code)
local void send_tree (deflate_state *s, ct_data *tree, int max_code)
local int build_bl_tree (deflate_state *s)
local void send_all_trees (deflate_state *s, int lcodes, int dcodes, int blcodes)
void _tr_stored_block (deflate_state *s, charf *buf, ulg stored_len, int eof)
void _tr_align (deflate_state *s)
void _tr_flush_block (deflate_state *s, charf *buf, ulg stored_len, int eof)
int _tr_tally (deflate_state *s, unsigned dist, unsigned lc)
local void compress_block (deflate_state *s, ct_data *ltree, ct_data *dtree)
local void set_data_type (deflate_state *s)
local unsigned bi_reverse (unsigned code, int len)
local void bi_flush (deflate_state *s)
local void bi_windup (deflate_state *s)
local void copy_block (deflate_state *s, charf *buf, unsigned len, int header)

Variables

local const int extra_lbits [LENGTH_CODES] = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}
local const int extra_dbits [D_CODES] = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}
local const int extra_blbits [BL_CODES] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}
local const uch bl_order [BL_CODES] = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}
local ct_data static_ltree [L_CODES+2]
local ct_data static_dtree [D_CODES]
uch _dist_code [DIST_CODE_LEN]
uch _length_code [MAX_MATCH-MIN_MATCH+1]
local int base_length [LENGTH_CODES]
local int base_dist [D_CODES]
local static_tree_desc static_l_desc
local static_tree_desc static_d_desc
local static_tree_desc static_bl_desc

Documentación de los 'defines'

#define Buf_size   (8 * 2*sizeof(char))
#define DIST_CODE_LEN   512
#define END_BLOCK   256
#define MAX_BL_BITS   7
#define pqremove (   s,
  tree,
  top 
)
Valor:
{\
    top = s->heap[SMALLEST]; \
    s->heap[SMALLEST] = s->heap[s->heap_len--]; \
    pqdownheap(s, tree, SMALLEST); \
}
#define put_short (   s,
 
)
Valor:
{ \
    put_byte(s, (uch)((w) & 0xff)); \
    put_byte(s, (uch)((ush)(w) >> 8)); \
}
#define REP_3_6   16
#define REPZ_11_138   18
#define REPZ_3_10   17
#define send_bits (   s,
  value,
  length 
)
Valor:
{ int len = length;\
  if (s->bi_valid > (int)Buf_size - len) {\
    int val = value;\
    s->bi_buf |= (val << s->bi_valid);\
    put_short(s, s->bi_buf);\
    s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
    s->bi_valid += len - Buf_size;\
  } else {\
    s->bi_buf |= (value) << s->bi_valid;\
    s->bi_valid += len;\
  }\
}
#define send_code (   s,
  c,
  tree 
)    send_bits(s, tree[c].Code, tree[c].Len)
#define smaller (   tree,
  n,
  m,
  depth 
)
Valor:
(tree[n].Freq < tree[m].Freq || \
   (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
#define SMALLEST   1

Documentación de las funciones

void _tr_align ( deflate_state s)
void _tr_flush_block ( deflate_state s,
charf buf,
ulg  stored_len,
int  eof 
)
void _tr_init ( deflate_state s)
void _tr_stored_block ( deflate_state s,
charf buf,
ulg  stored_len,
int  eof 
)
int _tr_tally ( deflate_state s,
unsigned  dist,
unsigned  lc 
)
local void bi_flush ( deflate_state s)
local unsigned bi_reverse ( unsigned  code,
int  len 
)
local void bi_windup ( deflate_state s)
local int build_bl_tree ( deflate_state s)
local void build_tree ( deflate_state s,
tree_desc desc 
)
local void compress_block ( deflate_state s,
ct_data ltree,
ct_data dtree 
)
local void copy_block ( deflate_state s,
charf buf,
unsigned  len,
int  header 
)
local void gen_bitlen ( deflate_state s,
tree_desc desc 
)
local void gen_codes ( ct_data tree,
int  max_code,
ushf bl_count 
)
local void init_block ( deflate_state s)
local void gen_bitlen OF ( (deflate_state *s, tree_desc *desc)  )
local void send_all_trees OF ( (deflate_state *s, int lcodes, int dcodes, int blcodes)  )
local void init_block OF ( (deflate_state *s )
local void compress_block OF ( (deflate_state *s, ct_data *ltree, ct_data *dtree)  )
local unsigned bi_reverse OF ( (unsigned value, int length )
local void gen_codes OF ( (ct_data *tree, int max_code, ushf *bl_count)  )
local void scan_tree OF ( (deflate_state *s, ct_data *tree, int max_code)  )
local void copy_block OF ( (deflate_state *s, charf *buf, unsigned len, int header)  )
local void tr_static_init OF ( (void)  )
local void pqdownheap OF ( (deflate_state *s, ct_data *tree, int k )
local void pqdownheap ( deflate_state s,
ct_data tree,
int  k 
)
local void scan_tree ( deflate_state s,
ct_data tree,
int  max_code 
)
local void send_all_trees ( deflate_state s,
int  lcodes,
int  dcodes,
int  blcodes 
)
local void send_tree ( deflate_state s,
ct_data tree,
int  max_code 
)
local void set_data_type ( deflate_state s)
local void tr_static_init ( )

Documentación de las variables

uch _dist_code[DIST_CODE_LEN]
uch _length_code[MAX_MATCH-MIN_MATCH+1]
local int base_dist[D_CODES]
local int base_length[LENGTH_CODES]
local const uch bl_order[BL_CODES] = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}
local const int extra_blbits[BL_CODES] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}
local const int extra_dbits[D_CODES] = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}
local const int extra_lbits[LENGTH_CODES] = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}
Valor inicial:
Valor inicial:
local ct_data static_dtree[D_CODES]
local ct_data static_ltree[L_CODES+2]
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