/* inftrees.h -- header to use inftrees.c * Copyright (C) 1995-1996 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 part of the implementation of the compression library and is subject to change. Applications should only use zlib.h. */ /* 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). */ typedef struct inflate_huft_s FAR 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; Bytef *pad; /* pad structure to a power of 2 (4 bytes for */ } word; /* 16-bit, 8 bytes for 32-bit machines) */ union { uInt Base; /* literal, length base, or distance base */ inflate_huft *Next; /* pointer to next level of table */ } more; }; #ifdef DEBUG extern uInt inflate_hufts; #endif extern int inflate_trees_bits OF(( uIntf *, /* 19 code lengths */ uIntf *, /* bits tree desired/actual depth */ inflate_huft * FAR *, /* bits tree result */ z_streamp )); /* for zalloc, zfree functions */ extern int inflate_trees_dynamic OF(( uInt, /* number of literal/length codes */ uInt, /* number of distance codes */ uIntf *, /* that many (total) code lengths */ uIntf *, /* literal desired/actual bit depth */ uIntf *, /* distance desired/actual bit depth */ inflate_huft * FAR *, /* literal/length tree result */ inflate_huft * FAR *, /* distance tree result */ z_streamp )); /* for zalloc, zfree functions */ extern int inflate_trees_fixed OF(( uIntf *, /* literal desired/actual bit depth */ uIntf *, /* distance desired/actual bit depth */ inflate_huft * FAR *, /* literal/length tree result */ inflate_huft * FAR *)); /* distance tree result */ extern int inflate_trees_free OF(( inflate_huft *, /* tables to free */ z_streamp )); /* for zfree function */