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/*
* include/types/compression.h
* This file defines everything related to compression.
*
* Copyright 2012 Exceliance, David Du Colombier <dducolombier@exceliance.fr>
William Lallemand <wlallemand@exceliance.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _TYPES_COMP_H
#define _TYPES_COMP_H
#ifdef USE_ZLIB
#include <zlib.h>
#endif /* USE_ZLIB */
struct comp {
struct comp_algo *algos;
struct comp_type *types;
unsigned int offload;
};
struct comp_ctx {
#ifdef USE_ZLIB
z_stream strm; /* zlib stream */
void *zlib_deflate_state;
void *zlib_window;
void *zlib_prev;
void *zlib_pending_buf;
void *zlib_head;
#endif /* USE_ZLIB */
int cur_lvl;
};
struct comp_algo {
char *name;
int name_len;
int (*init)(struct comp_ctx **comp_ctx, int level);
int (*add_data)(struct comp_ctx *comp_ctx, const char *in_data, int in_len, struct buffer *out);
int (*flush)(struct comp_ctx *comp_ctx, struct buffer *out, int flag);
int (*reset)(struct comp_ctx *comp_ctx);
int (*end)(struct comp_ctx **comp_ctx);
struct comp_algo *next;
};
struct comp_type {
char *name;
int name_len;
struct comp_type *next;
};
#endif /* _TYPES_COMP_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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