mirror of
https://github.com/ventoy/Ventoy.git
synced 2024-11-11 13:10:38 +00:00
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
#ifndef COMPRESSOR_H
|
|
#define COMPRESSOR_H
|
|
/*
|
|
*
|
|
* Copyright (c) 2009, 2010, 2011, 2012, 2013, 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.
|
|
*
|
|
* compressor.h
|
|
*/
|
|
|
|
struct compressor {
|
|
int id;
|
|
char *name;
|
|
int supported;
|
|
int (*init)(void **, int, int);
|
|
int (*compress)(void *, void *, void *, int, int, int *);
|
|
int (*uncompress)(void *, void *, int, int, int *);
|
|
int (*options)(char **, int);
|
|
int (*options_post)(int);
|
|
void *(*dump_options)(int, int *);
|
|
int (*extract_options)(int, void *, int);
|
|
int (*check_options)(int, void *, int);
|
|
void (*display_options)(void *, int);
|
|
void (*usage)();
|
|
};
|
|
|
|
extern struct compressor *lookup_compressor(char *);
|
|
extern struct compressor *lookup_compressor_id(int);
|
|
extern void display_compressors(char *, char *);
|
|
extern void display_compressor_usage(char *);
|
|
|
|
static inline int compressor_init(struct compressor *comp, void **stream,
|
|
int block_size, int datablock)
|
|
{
|
|
if(comp->init == NULL)
|
|
return 0;
|
|
return comp->init(stream, block_size, datablock);
|
|
}
|
|
|
|
|
|
static inline int compressor_compress(struct compressor *comp, void *strm,
|
|
void *dest, void *src, int size, int block_size, int *error)
|
|
{
|
|
return comp->compress(strm, dest, src, size, block_size, error);
|
|
}
|
|
|
|
|
|
static inline int compressor_uncompress(struct compressor *comp, void *dest,
|
|
void *src, int size, int block_size, int *error)
|
|
{
|
|
return comp->uncompress(dest, src, size, block_size, error);
|
|
}
|
|
|
|
|
|
/*
|
|
* For the following functions please see the lzo, lz4 or xz
|
|
* compressors for commented examples of how they are used.
|
|
*/
|
|
static inline int compressor_options(struct compressor *comp, char *argv[],
|
|
int argc)
|
|
{
|
|
if(comp->options == NULL)
|
|
return -1;
|
|
|
|
return comp->options(argv, argc);
|
|
}
|
|
|
|
|
|
static inline int compressor_options_post(struct compressor *comp, int block_size)
|
|
{
|
|
if(comp->options_post == NULL)
|
|
return 0;
|
|
return comp->options_post(block_size);
|
|
}
|
|
|
|
|
|
static inline void *compressor_dump_options(struct compressor *comp,
|
|
int block_size, int *size)
|
|
{
|
|
if(comp->dump_options == NULL)
|
|
return NULL;
|
|
return comp->dump_options(block_size, size);
|
|
}
|
|
|
|
|
|
static inline int compressor_extract_options(struct compressor *comp,
|
|
int block_size, void *buffer, int size)
|
|
{
|
|
if(comp->extract_options == NULL)
|
|
return size ? -1 : 0;
|
|
return comp->extract_options(block_size, buffer, size);
|
|
}
|
|
|
|
|
|
static inline int compressor_check_options(struct compressor *comp,
|
|
int block_size, void *buffer, int size)
|
|
{
|
|
if(comp->check_options == NULL)
|
|
return 0;
|
|
return comp->check_options(block_size, buffer, size);
|
|
}
|
|
|
|
|
|
static inline void compressor_display_options(struct compressor *comp,
|
|
void *buffer, int size)
|
|
{
|
|
if(comp->display_options != NULL)
|
|
comp->display_options(buffer, size);
|
|
}
|
|
#endif
|