ffmpeg/libavfilter/vf_idet.h

   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 {
  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     const AVPixFmtDescriptor *csp;
  67     int eof;
  68 } IDETContext;
  69
  70 void ff_idet_init_x86(IDETContext *idet, int for_16b);
  71
  72 /* main fall-back for left-over */
  73 int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
  74 int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w);
  75
  76 #endif