X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fzlib_inflate%2Finftrees.h;fp=lib%2Fzlib_inflate%2Finftrees.h;h=e37705adc008902e9e599dbc66744afadfd3554f;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=5f5219b1240e58c7b5eb2c7a9e2a3a7add446ef8;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git

diff --git a/lib/zlib_inflate/inftrees.h b/lib/zlib_inflate/inftrees.h
index 5f5219b12..e37705adc 100644
--- a/lib/zlib_inflate/inftrees.h
+++ b/lib/zlib_inflate/inftrees.h
@@ -1,6 +1,6 @@
 /* inftrees.h -- header to use inftrees.c
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
  */
 
 /* WARNING: this file should *not* be used by applications. It is
@@ -8,48 +8,57 @@
    subject to change. Applications should only use zlib.h.
  */
 
-/* Structure for decoding tables.  Each entry provides either the
-   information needed to do the operation requested by the code that
-   indexed that table entry, or it provides a pointer to another
-   table that indexes more bits of the code.  op indicates whether
-   the entry is a pointer to another table, a literal, a length or
-   distance, an end-of-block, or an invalid code.  For a table
-   pointer, the low four bits of op is the number of index bits of
-   that table.  For a length or distance, the low four bits of op
-   is the number of extra bits to get after the code.  bits is
-   the number of bits in this code or part of the code to drop off
-   of the bit buffer.  val is the actual byte to output in the case
-   of a literal, the base length or distance, or the offset from
-   the current table to the next table.  Each entry is four bytes. */
-typedef struct {
-    unsigned char op;           /* operation, extra bits, table bits */
-    unsigned char bits;         /* bits in this part of the code */
-    unsigned short val;         /* offset in table or code value */
-} code;
-
-/* op values as set by inflate_table():
-    00000000 - literal
-    0000tttt - table link, tttt != 0 is the number of table index bits
-    0001eeee - length or distance, eeee is the number of extra bits
-    01100000 - end of block
-    01000000 - invalid code
- */
+/* Huffman code lookup table entry--this entry is four bytes for machines
+   that have 16-bit pointers (e.g. PC's in the small or medium model). */
+
+#ifndef _INFTREES_H
+#define _INFTREES_H
+
+typedef struct inflate_huft_s inflate_huft;
+
+struct inflate_huft_s {
+  union {
+    struct {
+      Byte Exop;        /* number of extra bits or operation */
+      Byte Bits;        /* number of bits in this code or subcode */
+    } what;
+    uInt pad;           /* pad structure to a power of 2 (4 bytes for */
+  } word;               /*  16-bit, 8 bytes for 32-bit int's) */
+  uInt base;            /* literal, length base, distance base,
+                           or table offset */
+};
 
 /* Maximum size of dynamic tree.  The maximum found in a long but non-
-   exhaustive search was 1444 code structures (852 for length/literals
-   and 592 for distances, the latter actually the result of an
-   exhaustive search).  The true maximum is not known, but the value
-   below is more than safe. */
-#define ENOUGH 2048
-#define MAXD 592
-
-/* Type of code to build for inftable() */
-typedef enum {
-    CODES,
-    LENS,
-    DISTS
-} codetype;
-
-extern int zlib_inflate_table (codetype type, unsigned short *lens,
-                             unsigned codes, code **table,
-                             unsigned *bits, unsigned short *work);
+   exhaustive search was 1004 huft structures (850 for length/literals
+   and 154 for distances, the latter actually the result of an
+   exhaustive search).  The actual maximum is not known, but the
+   value below is more than safe. */
+#define MANY 1440
+
+extern int zlib_inflate_trees_bits (
+    uInt *,                     /* 19 code lengths */
+    uInt *,                     /* bits tree desired/actual depth */
+    inflate_huft **,            /* bits tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp);                 /* for messages */
+
+extern int zlib_inflate_trees_dynamic (
+    uInt,                       /* number of literal/length codes */
+    uInt,                       /* number of distance codes */
+    uInt *,                     /* that many (total) code lengths */
+    uInt *,                     /* literal desired/actual bit depth */
+    uInt *,                     /* distance desired/actual bit depth */
+    inflate_huft **,            /* literal/length tree result */
+    inflate_huft **,            /* distance tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp);                 /* for messages */
+
+extern int zlib_inflate_trees_fixed (
+    uInt *,                     /* literal desired/actual bit depth */
+    uInt *,                     /* distance desired/actual bit depth */
+    inflate_huft **,            /* literal/length tree result */
+    inflate_huft **,            /* distance tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp);                 /* for memory allocation */
+
+#endif /* _INFTREES_H */