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_IDET_H 20 #define AVFILTER_IDET_H 21 22 #include "libavutil/pixdesc.h" 23 #include "avfilter.h" 24 25 #define HIST_SIZE 4 26 27 typedef int (*ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w); 28 29 typedef enum { 30 TFF, 31 BFF, 32 PROGRESSIVE, 33 UNDETERMINED, 34 } Type; 35 36 typedef enum { 37 REPEAT_NONE, 38 REPEAT_TOP, 39 REPEAT_BOTTOM, 40 } RepeatedField; 41 42 typedef struct IDETContext { 43 const AVClass *class; 44 float interlace_threshold; 45 float progressive_threshold; 46 float repeat_threshold; 47 float half_life; 48 uint64_t decay_coefficient; 49 50 Type last_type; 51 52 uint64_t repeats[3]; 53 uint64_t prestat[4]; 54 uint64_t poststat[4]; 55 uint64_t total_repeats[3]; 56 uint64_t total_prestat[4]; 57 uint64_t total_poststat[4]; 58 59 uint8_t history[HIST_SIZE]; 60 61 AVFrame *cur; 62 AVFrame *next; 63 AVFrame *prev; 64 ff_idet_filter_func filter_line; 65 66 int interlaced_flag_accuracy; 67 int analyze_interlaced_flag; 68 int analyze_interlaced_flag_done; 69 70 const AVPixFmtDescriptor *csp; 71 int eof; 72 } IDETContext; 73 74 void ff_idet_init_x86(IDETContext *idet, int for_16b); 75 76 /* main fall-back for left-over */ 77 int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w); 78 int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w); 79 80 #endif 81