blob: da073aeba3615f584c8c8096fdda8007a107086e
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
4 | * FFmpeg is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by |
6 | * the Free Software Foundation; either version 2 of the License, or |
7 | * (at your option) any later version. |
8 | * |
9 | * FFmpeg is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with FFmpeg; if not, write to the Free Software Foundation, Inc., |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
17 | */ |
18 | |
19 | /** |
20 | * @file |
21 | * progressive to interlaced content filter, inspired by heavy debugging of |
22 | * tinterlace filter. |
23 | */ |
24 | |
25 | #ifndef AVFILTER_INTERLACE_H |
26 | #define AVFILTER_INTERLACE_H |
27 | |
28 | #include "libavutil/common.h" |
29 | #include "libavutil/imgutils.h" |
30 | #include "libavutil/opt.h" |
31 | |
32 | #include "avfilter.h" |
33 | #include "formats.h" |
34 | #include "internal.h" |
35 | #include "video.h" |
36 | |
37 | enum ScanMode { |
38 | MODE_TFF = 0, |
39 | MODE_BFF = 1, |
40 | }; |
41 | |
42 | enum FieldType { |
43 | FIELD_UPPER = 0, |
44 | FIELD_LOWER = 1, |
45 | }; |
46 | |
47 | typedef struct InterlaceContext { |
48 | const AVClass *class; |
49 | enum ScanMode scan; // top or bottom field first scanning |
50 | int lowpass; // enable or disable low pass filtering |
51 | AVFrame *cur, *next; // the two frames from which the new one is obtained |
52 | void (*lowpass_line)(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp, |
53 | const uint8_t *srcp_above, const uint8_t *srcp_below); |
54 | } InterlaceContext; |
55 | |
56 | void ff_interlace_init_x86(InterlaceContext *interlace); |
57 | |
58 | #endif /* AVFILTER_INTERLACE_H */ |
59 |