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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 filterning | |
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 */ |