2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
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 GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVFILTER_YADIF_H
20 #define AVFILTER_YADIF_H
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
27 YADIF_MODE_SEND_FRAME = 0, ///< send 1 frame for each frame
28 YADIF_MODE_SEND_FIELD = 1, ///< send 1 frame for each field
29 YADIF_MODE_SEND_FRAME_NOSPATIAL = 2, ///< send 1 frame for each frame but skips spatial interlacing check
30 YADIF_MODE_SEND_FIELD_NOSPATIAL = 3, ///< send 1 frame for each field but skips spatial interlacing check
34 YADIF_PARITY_TFF = 0, ///< top field first
35 YADIF_PARITY_BFF = 1, ///< bottom field first
36 YADIF_PARITY_AUTO = -1, ///< auto detection
40 YADIF_DEINT_ALL = 0, ///< deinterlace all frames
41 YADIF_DEINT_INTERLACED = 1, ///< only deinterlace frames marked as interlaced
44 enum YADIFCurrentField {
45 YADIF_FIELD_BACK_END = -1, ///< The last frame in a sequence
46 YADIF_FIELD_END = 0, ///< The first or last field in a sequence
47 YADIF_FIELD_NORMAL = 1, ///< A normal field in the middle of a sequence
50 typedef struct YADIFContext {
53 int mode; ///< YADIFMode
54 int parity; ///< YADIFParity
55 int deint; ///< YADIFDeint
64 void (*filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff);
67 * Required alignment for filter_line
69 void (*filter_line)(void *dst,
70 void *prev, void *cur, void *next,
71 int w, int prefs, int mrefs, int parity, int mode);
72 void (*filter_edges)(void *dst, void *prev, void *cur, void *next,
73 int w, int prefs, int mrefs, int parity, int mode);
75 const AVPixFmtDescriptor *csp;
81 * An algorithm that treats first and/or last fields in a sequence
82 * differently can use this to detect those cases. It is the algorithm's
83 * responsibility to set the value to YADIF_FIELD_NORMAL after processing
86 int current_field; ///< YADIFCurrentField
89 void ff_yadif_init_x86(YADIFContext *yadif);
91 int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame);
93 int ff_yadif_request_frame(AVFilterLink *link);
95 extern const AVOption ff_yadif_options[];
97 #endif /* AVFILTER_YADIF_H */