/*------------------------------------------------------------------------- * Filename: mini_inflate.h * Version: $Id: mini_inflate.h,v 1.2 2002/01/17 00:53:20 nyet Exp $ * Copyright: Copyright (C) 2001, Russ Dill * Author: Russ Dill <Russ.Dill@asu.edu> * Description: Mini deflate implementation *-----------------------------------------------------------------------*/ /* * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ typedef __SIZE_TYPE__ size; #define NO_ERROR 0 #define COMP_UNKNOWN 1 /* The specififed bytype is invalid */ #define CODE_NOT_FOUND 2 /* a huffman code in the stream could not be decoded */ #define TOO_MANY_BITS 3 /* pull_bits was passed an argument that is too * large */ /* This struct represents an entire huffman code set. It has various lookup * tables to speed decoding */ struct huffman_set { int bits; /* maximum bit length */ int num_symbols; /* Number of symbols this code can represent */ int *lengths; /* The bit length of symbols */ int *symbols; /* All of the symbols, sorted by the huffman code */ int *count; /* the number of codes of this bit length */ int *first; /* the first code of this bit length */ int *pos; /* the symbol that first represents (in the symbols * array) */ }; struct bitstream { unsigned char *data; /* increments as we move from byte to byte */ unsigned char bit; /* 0 to 7 */ void *(*memcpy)(void *, const void *, size); unsigned long decoded; /* The number of bytes decoded */ int error; int distance_count[16]; int distance_first[16]; int distance_pos[16]; int distance_lengths[32]; int distance_symbols[32]; int code_count[8]; int code_first[8]; int code_pos[8]; int code_lengths[19]; int code_symbols[19]; int length_count[16]; int length_first[16]; int length_pos[16]; int length_lengths[288]; int length_symbols[288]; struct huffman_set codes; struct huffman_set lengths; struct huffman_set distance; }; #define NO_COMP 0 #define FIXED_COMP 1 #define DYNAMIC_COMP 2 long decompress_block(unsigned char *dest, unsigned char *source, void *(*inflate_memcpy)(void *dest, const void *src, size n));