ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /libfreetype/inftrees.h/
/* inftrees.h -- header to use inftrees.c * Copyright (C) 1995-2002 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). */ #ifndef _INFTREES_H #define _INFTREES_H 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; 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 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 local int inflate_trees_bits OF(( uIntf *, /* 19 code lengths */ uIntf *, /* bits tree desired/actual depth */ inflate_huft * FAR *, /* bits tree result */ inflate_huft *, /* space for trees */ z_streamp)); /* for messages */ local 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 */ inflate_huft *, /* space for trees */ z_streamp)); /* for messages */ local 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 */ z_streamp)); /* for memory allocation */ #endif /* _INFTREES_H */