mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*-------------------------------------------------------------------------
|
|
* 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));
|