/*
  * LZW decoder

  * Copyright (c) 2003 Fabrice Bellard
  * Copyright (c) 2006 Konstantin Shishkov

  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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 FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**

  * @file

  * @brief LZW decoding routines
  * @author Fabrice Bellard

  * @author modified for use in TIFF by Konstantin Shishkov

  */
 

 #ifndef AVCODEC_LZW_H
 #define AVCODEC_LZW_H

 #include <stdint.h>
 

 struct PutBitContext;
 

 enum FF_LZW_MODES{
     FF_LZW_GIF,
     FF_LZW_TIFF
 };
 
 /* clients should not know what LZWState is */
 typedef void LZWState;
 
 /* first two functions de/allocate memory for LZWState */
 void ff_lzw_decode_open(LZWState **p);
 void ff_lzw_decode_close(LZWState **p);

 int ff_lzw_decode_init(LZWState *s, int csize, const uint8_t *buf, int buf_size, int mode);

 int ff_lzw_decode(LZWState *s, uint8_t *buf, int len);

 int ff_lzw_decode_tail(LZWState *lzw);

 /** LZW encode state */
 struct LZWEncodeState;
 extern const int ff_lzw_encode_state_size;
 

 void ff_lzw_encode_init(struct LZWEncodeState *s, uint8_t *outbuf, int outsize,
                         int maxbits, enum FF_LZW_MODES mode,
                         void (*lzw_put_bits)(struct PutBitContext *, int, unsigned int));

 int ff_lzw_encode(struct LZWEncodeState * s, const uint8_t * inbuf, int insize);

 int ff_lzw_encode_flush(struct LZWEncodeState *s,
                         void (*lzw_flush_put_bits)(struct PutBitContext *));

 #endif /* AVCODEC_LZW_H */