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inftrees.h
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1/* inftrees.h -- header to use inftrees.c
2 * Copyright (C) 1995-2002 Mark Adler
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
6/* WARNING: this file should *not* be used by applications. It is
7 part of the implementation of the compression library and is
8 subject to change. Applications should only use zlib.h.
9 */
10
11/* Huffman code lookup table entry--this entry is four bytes for machines
12 that have 16-bit pointers (e.g. PC's in the small or medium model). */
13
14#ifndef _INFTREES_H
15#define _INFTREES_H
16
18
20 union {
21 struct {
22 Byte Exop; /* number of extra bits or operation */
23 Byte Bits; /* number of bits in this code or subcode */
25 uInt pad; /* pad structure to a power of 2 (4 bytes for */
26 } word; /* 16-bit, 8 bytes for 32-bit int's) */
27 uInt base; /* literal, length base, distance base,
28 or table offset */
29};
30
31/* Maximum size of dynamic tree. The maximum found in a long but non-
32 exhaustive search was 1004 huft structures (850 for length/literals
33 and 154 for distances, the latter actually the result of an
34 exhaustive search). The actual maximum is not known, but the
35 value below is more than safe. */
36#define MANY 1440
37
39 uIntf *, /* 19 code lengths */
40 uIntf *, /* bits tree desired/actual depth */
41 inflate_huft * FAR *, /* bits tree result */
42 inflate_huft *, /* space for trees */
43 z_streamp)); /* for messages */
44
46 uInt, /* number of literal/length codes */
47 uInt, /* number of distance codes */
48 uIntf *, /* that many (total) code lengths */
49 uIntf *, /* literal desired/actual bit depth */
50 uIntf *, /* distance desired/actual bit depth */
51 inflate_huft * FAR *, /* literal/length tree result */
52 inflate_huft * FAR *, /* distance tree result */
53 inflate_huft *, /* space for trees */
54 z_streamp)); /* for messages */
55
57 uIntf *, /* literal desired/actual bit depth */
58 uIntf *, /* distance desired/actual bit depth */
59 const inflate_huft * FAR *, /* literal/length tree result */
60 const inflate_huft * FAR *, /* distance tree result */
61 z_streamp)); /* for memory allocation */
62
63#endif /* _INFTREES_H */
z_stream FAR * z_streamp
Definition: zlib.h:80
unsigned int uInt
Definition: zlib.h:38
unsigned char Byte
Definition: zlib.h:37
#define FAR
Definition: zlib.h:34
int inflate_trees_bits(uIntf *c, uIntf *bb, inflate_huft *FAR *tb, inflate_huft *hp, z_streamp z)
Definition: inftrees.c:299
int inflate_trees_fixed(uIntf *bl, uIntf *bd, const inflate_huft *FAR *tl, const inflate_huft *FAR *td, z_streamp z)
Definition: inftrees.c:409
int inflate_trees_dynamic(uInt nl, uInt nd, uIntf *c, uIntf *bl, uIntf *bd, inflate_huft *FAR *tl, inflate_huft *FAR *td, inflate_huft *hp, z_streamp z)
Definition: inftrees.c:327
struct inflate_huft_s FAR inflate_huft
Definition: inftrees.h:17
#define local
Definition: zutil.h:30
struct inflate_huft_s::@4242::@4243 what
union inflate_huft_s::@4242 word
#define OF(args)
Definition: zconf.h:295
uInt FAR uIntf
Definition: zconf.h:410