81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
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/*
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* Copyright (C) 2016 Cisco and/or its affiliates. All rights reserved.
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*
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* Author: Kevin Lin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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*
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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#ifndef __LZWDEC_H__
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#define __LZWDEC_H__
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#include <stdint.h>
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struct lzw_internal_state;
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typedef struct lzw_stream_s {
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uint8_t *next_in;
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unsigned avail_in;
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unsigned total_in;
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uint8_t *next_out;
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unsigned avail_out;
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unsigned total_out;
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char *msg;
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uint32_t flags;
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struct lzw_internal_state *state;
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} lzw_stream;
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typedef lzw_stream *lzw_streamp;
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#define LZW_OK 0
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#define LZW_STREAM_END 1
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#define LZW_STREAM_ERROR (-2)
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#define LZW_DATA_ERROR (-3)
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#define LZW_MEM_ERROR (-4)
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#define LZW_BUF_ERROR (-5)
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#define LZW_DICT_ERROR (-7)
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/* option flags */
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#define LZW_NOFLAGS 0x0
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#define LZW_FLAG_EARLYCHG 0x1 /* code point changes one code earlier */
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#define LZW_FLAG_EXTNCODE 0x2 /* use extended code points (12+ bits) */
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/* state flags */
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#define LZW_FLAG_FULLDICT 0x100 /* dictionary consumes all usable codes */
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#define LZW_FLAG_EXTNCODEUSE 0x200 /* extended dictionary uses 12+ bit codes */
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#define LZW_FLAG_INVALIDCODE 0x400 /* input references invalid code entry (data error) */
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int lzwInit(lzw_streamp strm);
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int lzwInflate(lzw_streamp strm);
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int lzwInflateEnd(lzw_streamp strm);
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#endif /* __LZWDEC_H__ */
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