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_FRAMERATE_H
20 #define AVFILTER_FRAMERATE_H
22 #include "scene_sad.h"
25 #define BLEND_FUNC_PARAMS const uint8_t *src1, ptrdiff_t src1_linesize, \
26 const uint8_t *src2, ptrdiff_t src2_linesize, \
27 uint8_t *dst, ptrdiff_t dst_linesize, \
28 ptrdiff_t width, ptrdiff_t height, \
29 int factor1, int factor2, int half
31 #define BLEND_FACTOR_DEPTH8 7
32 #define BLEND_FACTOR_DEPTH16 15
34 typedef void (*blend_func)(BLEND_FUNC_PARAMS);
36 typedef struct FrameRateContext {
39 AVRational dest_frame_rate; ///< output frames per second
40 int flags; ///< flags affecting frame rate conversion algorithm
41 double scene_score; ///< score that denotes a scene change has happened
42 int interp_start; ///< start of range to apply linear interpolation
43 int interp_end; ///< end of range to apply linear interpolation
45 int line_size[4]; ///< bytes of pixel data per line for each plane
46 int height[4]; ///< height of each plane
49 AVRational srce_time_base; ///< timebase of source
50 AVRational dest_time_base; ///< timebase of destination
52 ff_scene_sad_fn sad; ///< Sum of the absolute difference function (scene detect only)
53 double prev_mafd; ///< previous MAFD (scene detect only)
59 AVFrame *f0; ///< last frame
60 AVFrame *f1; ///< current frame
61 int64_t pts0; ///< last frame pts in dest_time_base
62 int64_t pts1; ///< current frame pts in dest_time_base
63 int64_t delta; ///< pts1 to pts0 delta
64 double score; ///< scene change score (f0 to f1)
65 int flush; ///< 1 if the filter is being flushed
66 int64_t start_pts; ///< pts of the first output frame
67 int64_t n; ///< output frame counter
72 void ff_framerate_init(FrameRateContext *s);
73 void ff_framerate_init_x86(FrameRateContext *s);
75 #endif /* AVFILTER_FRAMERATE_H */