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59 lines
2.3 KiB
59 lines
2.3 KiB
/* inftrees.h -- header to use inftrees.c |
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* Copyright (C) 1995 Mark Adler |
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* For conditions of distribution and use, see copyright notice in zlib.h |
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*/ |
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/* WARNING: this file should *not* be used by applications. It is |
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part of the implementation of the compression library and is |
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subject to change. Applications should only use zlib.h. |
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*/ |
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/* Huffman code lookup table entry--this entry is four bytes for machines |
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that have 16-bit pointers (e.g. PC's in the small or medium model). */ |
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typedef struct inflate_huft_s FAR inflate_huft; |
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struct inflate_huft_s { |
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union { |
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struct { |
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Byte Exop; /* number of extra bits or operation */ |
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Byte Bits; /* number of bits in this code or subcode */ |
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} what; |
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Bytef *pad; /* pad structure to a power of 2 (4 bytes for */ |
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} word; /* 16-bit, 8 bytes for 32-bit machines) */ |
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union { |
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uInt Base; /* literal, length base, or distance base */ |
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inflate_huft *Next; /* pointer to next level of table */ |
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} more; |
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}; |
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#ifdef DEBUG |
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extern uInt inflate_hufts; |
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#endif |
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extern int inflate_trees_bits OF(( |
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uIntf *, /* 19 code lengths */ |
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uIntf *, /* bits tree desired/actual depth */ |
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inflate_huft * FAR *, /* bits tree result */ |
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z_stream *)); /* for zalloc, zfree functions */ |
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extern int inflate_trees_dynamic OF(( |
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uInt, /* number of literal/length codes */ |
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uInt, /* number of distance codes */ |
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uIntf *, /* that many (total) code lengths */ |
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uIntf *, /* literal desired/actual bit depth */ |
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uIntf *, /* distance desired/actual bit depth */ |
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inflate_huft * FAR *, /* literal/length tree result */ |
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inflate_huft * FAR *, /* distance tree result */ |
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z_stream *)); /* for zalloc, zfree functions */ |
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extern int inflate_trees_fixed OF(( |
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uIntf *, /* literal desired/actual bit depth */ |
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uIntf *, /* distance desired/actual bit depth */ |
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inflate_huft * FAR *, /* literal/length tree result */ |
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inflate_huft * FAR *)); /* distance tree result */ |
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extern int inflate_trees_free OF(( |
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inflate_huft *, /* tables to free */ |
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z_stream *)); /* for zfree function */ |
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