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/*
* Copyright (C) 2008 Nokia Corporation.
* Copyright (C) 2008 University of Szeged, Hungary
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* 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., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Artem Bityutskiy
* Adrian Hunter
* Zoltan Sogor
*/
#ifndef __UBIFS_COMPRESS_H__
#define __UBIFS_COMPRESS_H__
/*
* Compressors may end-up with more data in the output buffer than in the input
* buffer. This constant defined the worst case factor, i.e. we assume that the
* output buffer may be at max. WORST_COMPR_FACTOR times larger than input
* buffer.
*/
#define WORST_COMPR_FACTOR 4
enum compression_type
{
MKFS_UBIFS_COMPR_NONE,
MKFS_UBIFS_COMPR_LZO,
MKFS_UBIFS_COMPR_ZLIB,
MKFS_UBIFS_COMPR_ZSTD,
};
int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
int type);
int init_compression(void);
void destroy_compression(void);
#endif
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