47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright (C) 2008 Nokia Corporation.
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* Copyright (C) 2008 University of Szeged, Hungary
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Artem Bityutskiy
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* Adrian Hunter
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* Zoltan Sogor
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*/
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#ifndef __UBIFS_COMPRESS_H__
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#define __UBIFS_COMPRESS_H__
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/*
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* Compressors may end-up with more data in the output buffer than in the input
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* buffer. This constant defined the worst case factor, i.e. we assume that the
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* output buffer may be at max. WORST_COMPR_FACTOR times larger than input
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* buffer.
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*/
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#define WORST_COMPR_FACTOR 4
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enum compression_type
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{
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MKFS_UBIFS_COMPR_NONE,
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MKFS_UBIFS_COMPR_LZO,
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MKFS_UBIFS_COMPR_ZLIB,
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};
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int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
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int type);
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int init_compression(void);
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void destroy_compression(void);
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#endif
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