1 /* 2 * This file is part of FFmpeg. 3 * 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. 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 GNU 12 * Lesser General Public License for more details. 13 * 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 17 */ 18 19 #ifndef AVFILTER_FRAMERATE_H 20 #define AVFILTER_FRAMERATE_H 21 22 #include "scene_sad.h" 23 #include "avfilter.h" 24 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 30 31 #define BLEND_FACTOR_DEPTH(n) (n-1) 32 33 typedef void (*blend_func)(BLEND_FUNC_PARAMS); 34 35 typedef struct FrameRateContext { 36 const AVClass *class; 37 // parameters 38 AVRational dest_frame_rate; ///< output frames per second 39 int flags; ///< flags affecting frame rate conversion algorithm 40 double scene_score; ///< score that denotes a scene change has happened 41 int interp_start; ///< start of range to apply linear interpolation 42 int interp_end; ///< end of range to apply linear interpolation 43 44 int line_size[4]; ///< bytes of pixel data per line for each plane 45 int height[4]; ///< height of each plane 46 int vsub; 47 48 AVRational srce_time_base; ///< timebase of source 49 AVRational dest_time_base; ///< timebase of destination 50 51 ff_scene_sad_fn sad; ///< Sum of the absolute difference function (scene detect only) 52 double prev_mafd; ///< previous MAFD (scene detect only) 53 54 int blend_factor_max; 55 int bitdepth; 56 AVFrame *work; 57 58 AVFrame *f0; ///< last frame 59 AVFrame *f1; ///< current frame 60 int64_t pts0; ///< last frame pts in dest_time_base 61 int64_t pts1; ///< current frame pts in dest_time_base 62 int64_t delta; ///< pts1 to pts0 delta 63 double score; ///< scene change score (f0 to f1) 64 int flush; ///< 1 if the filter is being flushed 65 int64_t start_pts; ///< pts of the first output frame 66 int64_t n; ///< output frame counter 67 68 blend_func blend; 69 } FrameRateContext; 70 71 void ff_framerate_init(FrameRateContext *s); 72 void ff_framerate_init_x86(FrameRateContext *s); 73 74 #endif /* AVFILTER_FRAMERATE_H */ 75