CCITT Fax Group 3 and 4 decompression by kostya.
[libav.git] / libavcodec / faxcompr.h
1 /*
2 * CCITT Fax Group 3 and 4 decompression
3 * Copyright (c) 2008 Konstantin Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * CCITT Fax Group 3 and 4 decompression
24 * @file faxcompr.h
25 * @author Konstantin Shishkov
26 */
27 #ifndef AVCODEC_FAXCOMPR_H
28 #define AVCODEC_FAXCOMPR_H
29
30 #include "avcodec.h"
31
32 /**
33 * initialize upacker code
34 */
35 void ff_ccitt_unpack_init();
36
37 /**
38 * unpack data compressed with CCITT Group 3 1-D method
39 */
40 int ff_ccitt_unpack_1d(AVCodecContext *avctx,
41 const uint8_t *src, int srcsize,
42 uint8_t *dst, int height, int stride);
43
44 /**
45 * unpack data compressed with CCITT Group 3 2-D or Group 4 method
46 */
47 int ff_ccitt_unpack_2d(AVCodecContext *avctx,
48 const uint8_t *src, int srcsize,
49 uint8_t *dst, int height, int stride, int g4);
50
51 #endif /* AVCODEC_FAXCOMPR_H */