mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-27 05:00:37 +00:00
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
|
|
* 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 lzw.h
|
|
* @brief LZW decoding routines
|
|
* @author Fabrice Bellard
|
|
* Modified for use in TIFF by Konstantin Shishkov
|
|
*/
|
|
|
|
#ifndef FFMPEG_LZW_H
|
|
#define FFMPEG_LZW_H
|
|
|
|
#include "bitstream.h"
|
|
|
|
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, uint8_t *buf, int buf_size, int mode);
|
|
int ff_lzw_decode(LZWState *s, uint8_t *buf, int len);
|
|
uint8_t* ff_lzw_cur_ptr(LZWState *lzw);
|
|
void 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);
|
|
int ff_lzw_encode(struct LZWEncodeState * s, const uint8_t * inbuf, int insize);
|
|
int ff_lzw_encode_flush(struct LZWEncodeState * s);
|
|
|
|
#endif /* FFMPEG_LZW_H */
|