| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768 |
- /*-------------------------------------------------------------------------
- * 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
- *-----------------------------------------------------------------------*/
- /*
- * SPDX-License-Identifier: GPL-2.0+
- */
- 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));
|
