mirror of
https://github.com/ventoy/Ventoy.git
synced 2024-12-29 00:23:24 -05:00
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
|
#ifndef GZIP_WRAPPER_H
|
||
|
|
#define GZIP_WRAPPER_H
|
||
|
|
/*
|
||
|
|
* Squashfs
|
||
|
|
*
|
||
|
|
* Copyright (c) 2014
|
||
|
|
* Phillip Lougher <phillip@squashfs.org.uk>
|
||
|
|
*
|
||
|
|
* 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,
|
||
|
|
* 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
*
|
||
|
|
* gzip_wrapper.h
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef linux
|
||
|
|
#define __BYTE_ORDER BYTE_ORDER
|
||
|
|
#define __BIG_ENDIAN BIG_ENDIAN
|
||
|
|
#define __LITTLE_ENDIAN LITTLE_ENDIAN
|
||
|
|
#else
|
||
|
|
#include <endian.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
||
|
|
extern unsigned int inswap_le16(unsigned short);
|
||
|
|
extern unsigned int inswap_le32(unsigned int);
|
||
|
|
|
||
|
|
#define SQUASHFS_INSWAP_COMP_OPTS(s) { \
|
||
|
|
(s)->compression_level = inswap_le32((s)->compression_level); \
|
||
|
|
(s)->window_size = inswap_le16((s)->window_size); \
|
||
|
|
(s)->strategy = inswap_le16((s)->strategy); \
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#define SQUASHFS_INSWAP_COMP_OPTS(s)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Default compression */
|
||
|
|
#define GZIP_DEFAULT_COMPRESSION_LEVEL 9
|
||
|
|
#define GZIP_DEFAULT_WINDOW_SIZE 15
|
||
|
|
|
||
|
|
struct gzip_comp_opts {
|
||
|
|
int compression_level;
|
||
|
|
short window_size;
|
||
|
|
short strategy;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct strategy {
|
||
|
|
char *name;
|
||
|
|
int strategy;
|
||
|
|
int selected;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct gzip_strategy {
|
||
|
|
int strategy;
|
||
|
|
int length;
|
||
|
|
void *buffer;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct gzip_stream {
|
||
|
|
z_stream stream;
|
||
|
|
int strategies;
|
||
|
|
struct gzip_strategy strategy[0];
|
||
|
|
};
|
||
|
|
#endif
|