FFmpeg
vf_minterpolate.c
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1 /**
2  * Copyright (c) 2014-2015 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "motion_estimation.h"
23 #include "libavcodec/mathops.h"
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/motion_vector.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 #include "scene_sad.h"
34 
35 #define ME_MODE_BIDIR 0
36 #define ME_MODE_BILAT 1
37 
38 #define MC_MODE_OBMC 0
39 #define MC_MODE_AOBMC 1
40 
41 #define SCD_METHOD_NONE 0
42 #define SCD_METHOD_FDIFF 1
43 
44 #define NB_FRAMES 4
45 #define NB_PIXEL_MVS 32
46 #define NB_CLUSTERS 128
47 
48 #define ALPHA_MAX 1024
49 #define CLUSTER_THRESHOLD 4
50 #define PX_WEIGHT_MAX 255
51 #define COST_PRED_SCALE 64
52 
53 static const uint8_t obmc_linear32[1024] = {
54  0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
55  0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
56  0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
57  0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
58  4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
59  4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
60  4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
61  4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
62  4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
63  4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
64  4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
65  4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
66  8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
67  8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
68  8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
69  8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
70  8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24, 8,
71  8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20, 8,
72  8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20, 8,
73  8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20, 8,
74  4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16, 4,
75  4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16, 4,
76  4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16, 4,
77  4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12, 4,
78  4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12, 4,
79  4, 8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16, 8, 4,
80  4, 8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12, 8, 4,
81  4, 8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12, 8, 4,
82  0, 4, 8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12, 8, 4, 0,
83  0, 4, 8, 8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12, 8, 8, 4, 0,
84  0, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12, 8, 8, 8, 4, 4, 4, 0,
85  0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0,
86 };
87 
88 static const uint8_t obmc_linear16[256] = {
89  0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
90  4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
91  4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
92  8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
93  8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
94  12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
95  12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
96  16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
97  16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
98  12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
99  12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
100  8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
101  8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
102  4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
103  4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
104  0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
105 };
106 
107 static const uint8_t obmc_linear8[64] = {
108  4, 12, 20, 28, 28, 20, 12, 4,
109  12, 36, 60, 84, 84, 60, 36, 12,
110  20, 60,100,140,140,100, 60, 20,
111  28, 84,140,196,196,140, 84, 28,
112  28, 84,140,196,196,140, 84, 28,
113  20, 60,100,140,140,100, 60, 20,
114  12, 36, 60, 84, 84, 60, 36, 12,
115  4, 12, 20, 28, 28, 20, 12, 4,
116 };
117 
118 static const uint8_t obmc_linear4[16] = {
119  16, 48, 48, 16,
120  48,144,144, 48,
121  48,144,144, 48,
122  16, 48, 48, 16,
123 };
124 
125 static const uint8_t * const obmc_tab_linear[4]= {
126  obmc_linear32, obmc_linear16, obmc_linear8, obmc_linear4
127 };
128 
129 enum MIMode {
130  MI_MODE_DUP = 0,
131  MI_MODE_BLEND = 1,
132  MI_MODE_MCI = 2,
133 };
134 
135 typedef struct Cluster {
136  int64_t sum[2];
137  int nb;
138 } Cluster;
139 
140 typedef struct Block {
141  int16_t mvs[2][2];
142  int cid;
143  uint64_t sbad;
144  int sb;
145  struct Block *subs;
146 } Block;
147 
148 typedef struct PixelMVS {
149  int16_t mvs[NB_PIXEL_MVS][2];
150 } PixelMVS;
151 
152 typedef struct PixelWeights {
153  uint32_t weights[NB_PIXEL_MVS];
154 } PixelWeights;
155 
156 typedef struct PixelRefs {
157  int8_t refs[NB_PIXEL_MVS];
158  int nb;
159 } PixelRefs;
160 
161 typedef struct Frame {
162  AVFrame *avf;
163  Block *blocks;
164 } Frame;
165 
166 typedef struct MIContext {
167  const AVClass *class;
168  AVMotionEstContext me_ctx;
169  AVRational frame_rate;
170  enum MIMode mi_mode;
171  int mc_mode;
172  int me_mode;
173  int me_method;
174  int mb_size;
175  int search_param;
176  int vsbmc;
177 
178  Frame frames[NB_FRAMES];
179  Cluster clusters[NB_CLUSTERS];
180  Block *int_blocks;
181  PixelMVS *pixel_mvs;
182  PixelWeights *pixel_weights;
183  PixelRefs *pixel_refs;
184  int (*mv_table[3])[2][2];
185  int64_t out_pts;
186  int b_width, b_height, b_count;
187  int log2_mb_size;
188  int bitdepth;
189 
190  int scd_method;
191  int scene_changed;
192  ff_scene_sad_fn sad;
193  double prev_mafd;
194  double scd_threshold;
195 
196  int log2_chroma_w;
197  int log2_chroma_h;
198  int nb_planes;
199 } MIContext;
200 
201 #define OFFSET(x) offsetof(MIContext, x)
202 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
203 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
204 
205 static const AVOption minterpolate_options[] = {
206  { "fps", "output's frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "60"}, 0, INT_MAX, FLAGS },
207  { "mi_mode", "motion interpolation mode", OFFSET(mi_mode), AV_OPT_TYPE_INT, {.i64 = MI_MODE_MCI}, MI_MODE_DUP, MI_MODE_MCI, FLAGS, "mi_mode" },
208  CONST("dup", "duplicate frames", MI_MODE_DUP, "mi_mode"),
209  CONST("blend", "blend frames", MI_MODE_BLEND, "mi_mode"),
210  CONST("mci", "motion compensated interpolation", MI_MODE_MCI, "mi_mode"),
211  { "mc_mode", "motion compensation mode", OFFSET(mc_mode), AV_OPT_TYPE_INT, {.i64 = MC_MODE_OBMC}, MC_MODE_OBMC, MC_MODE_AOBMC, FLAGS, "mc_mode" },
212  CONST("obmc", "overlapped block motion compensation", MC_MODE_OBMC, "mc_mode"),
213  CONST("aobmc", "adaptive overlapped block motion compensation", MC_MODE_AOBMC, "mc_mode"),
214  { "me_mode", "motion estimation mode", OFFSET(me_mode), AV_OPT_TYPE_INT, {.i64 = ME_MODE_BILAT}, ME_MODE_BIDIR, ME_MODE_BILAT, FLAGS, "me_mode" },
215  CONST("bidir", "bidirectional motion estimation", ME_MODE_BIDIR, "me_mode"),
216  CONST("bilat", "bilateral motion estimation", ME_MODE_BILAT, "me_mode"),
217  { "me", "motion estimation method", OFFSET(me_method), AV_OPT_TYPE_INT, {.i64 = AV_ME_METHOD_EPZS}, AV_ME_METHOD_ESA, AV_ME_METHOD_UMH, FLAGS, "me" },
218  CONST("esa", "exhaustive search", AV_ME_METHOD_ESA, "me"),
219  CONST("tss", "three step search", AV_ME_METHOD_TSS, "me"),
220  CONST("tdls", "two dimensional logarithmic search", AV_ME_METHOD_TDLS, "me"),
221  CONST("ntss", "new three step search", AV_ME_METHOD_NTSS, "me"),
222  CONST("fss", "four step search", AV_ME_METHOD_FSS, "me"),
223  CONST("ds", "diamond search", AV_ME_METHOD_DS, "me"),
224  CONST("hexbs", "hexagon-based search", AV_ME_METHOD_HEXBS, "me"),
225  CONST("epzs", "enhanced predictive zonal search", AV_ME_METHOD_EPZS, "me"),
226  CONST("umh", "uneven multi-hexagon search", AV_ME_METHOD_UMH, "me"),
227  { "mb_size", "macroblock size", OFFSET(mb_size), AV_OPT_TYPE_INT, {.i64 = 16}, 4, 16, FLAGS },
228  { "search_param", "search parameter", OFFSET(search_param), AV_OPT_TYPE_INT, {.i64 = 32}, 4, INT_MAX, FLAGS },
229  { "vsbmc", "variable-size block motion compensation", OFFSET(vsbmc), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS },
230  { "scd", "scene change detection method", OFFSET(scd_method), AV_OPT_TYPE_INT, {.i64 = SCD_METHOD_FDIFF}, SCD_METHOD_NONE, SCD_METHOD_FDIFF, FLAGS, "scene" },
231  CONST("none", "disable detection", SCD_METHOD_NONE, "scene"),
232  CONST("fdiff", "frame difference", SCD_METHOD_FDIFF, "scene"),
233  { "scd_threshold", "scene change threshold", OFFSET(scd_threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100.0, FLAGS },
234  { NULL }
235 };
236 
237 AVFILTER_DEFINE_CLASS(minterpolate);
238 
239 static int query_formats(AVFilterContext *ctx)
240 {
241  static const enum AVPixelFormat pix_fmts[] = {
242  AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
243  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
244  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
245  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
246  AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
247  AV_PIX_FMT_YUVJ411P,
248  AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
249  AV_PIX_FMT_GRAY8,
250  AV_PIX_FMT_NONE
251  };
252 
253  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
254  if (!fmts_list)
255  return AVERROR(ENOMEM);
256  return ff_set_common_formats(ctx, fmts_list);
257 }
258 
259 static uint64_t get_sbad(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
260 {
261  uint8_t *data_cur = me_ctx->data_cur;
262  uint8_t *data_next = me_ctx->data_ref;
263  int linesize = me_ctx->linesize;
264  int mv_x1 = x_mv - x;
265  int mv_y1 = y_mv - y;
266  int mv_x, mv_y, i, j;
267  uint64_t sbad = 0;
268 
269  x = av_clip(x, me_ctx->x_min, me_ctx->x_max);
270  y = av_clip(y, me_ctx->y_min, me_ctx->y_max);
271  mv_x = av_clip(x_mv - x, -FFMIN(x - me_ctx->x_min, me_ctx->x_max - x), FFMIN(x - me_ctx->x_min, me_ctx->x_max - x));
272  mv_y = av_clip(y_mv - y, -FFMIN(y - me_ctx->y_min, me_ctx->y_max - y), FFMIN(y - me_ctx->y_min, me_ctx->y_max - y));
273 
274  data_cur += (y + mv_y) * linesize;
275  data_next += (y - mv_y) * linesize;
276 
277  for (j = 0; j < me_ctx->mb_size; j++)
278  for (i = 0; i < me_ctx->mb_size; i++)
279  sbad += FFABS(data_cur[x + mv_x + i + j * linesize] - data_next[x - mv_x + i + j * linesize]);
280 
281  return sbad + (FFABS(mv_x1 - me_ctx->pred_x) + FFABS(mv_y1 - me_ctx->pred_y)) * COST_PRED_SCALE;
282 }
283 
284 static uint64_t get_sbad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
285 {
286  uint8_t *data_cur = me_ctx->data_cur;
287  uint8_t *data_next = me_ctx->data_ref;
288  int linesize = me_ctx->linesize;
289  int x_min = me_ctx->x_min + me_ctx->mb_size / 2;
290  int x_max = me_ctx->x_max - me_ctx->mb_size / 2;
291  int y_min = me_ctx->y_min + me_ctx->mb_size / 2;
292  int y_max = me_ctx->y_max - me_ctx->mb_size / 2;
293  int mv_x1 = x_mv - x;
294  int mv_y1 = y_mv - y;
295  int mv_x, mv_y, i, j;
296  uint64_t sbad = 0;
297 
298  x = av_clip(x, x_min, x_max);
299  y = av_clip(y, y_min, y_max);
300  mv_x = av_clip(x_mv - x, -FFMIN(x - x_min, x_max - x), FFMIN(x - x_min, x_max - x));
301  mv_y = av_clip(y_mv - y, -FFMIN(y - y_min, y_max - y), FFMIN(y - y_min, y_max - y));
302 
303  for (j = -me_ctx->mb_size / 2; j < me_ctx->mb_size * 3 / 2; j++)
304  for (i = -me_ctx->mb_size / 2; i < me_ctx->mb_size * 3 / 2; i++)
305  sbad += FFABS(data_cur[x + mv_x + i + (y + mv_y + j) * linesize] - data_next[x - mv_x + i + (y - mv_y + j) * linesize]);
306 
307  return sbad + (FFABS(mv_x1 - me_ctx->pred_x) + FFABS(mv_y1 - me_ctx->pred_y)) * COST_PRED_SCALE;
308 }
309 
310 static uint64_t get_sad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
311 {
312  uint8_t *data_ref = me_ctx->data_ref;
313  uint8_t *data_cur = me_ctx->data_cur;
314  int linesize = me_ctx->linesize;
315  int x_min = me_ctx->x_min + me_ctx->mb_size / 2;
316  int x_max = me_ctx->x_max - me_ctx->mb_size / 2;
317  int y_min = me_ctx->y_min + me_ctx->mb_size / 2;
318  int y_max = me_ctx->y_max - me_ctx->mb_size / 2;
319  int mv_x = x_mv - x;
320  int mv_y = y_mv - y;
321  int i, j;
322  uint64_t sad = 0;
323 
324  x = av_clip(x, x_min, x_max);
325  y = av_clip(y, y_min, y_max);
326  x_mv = av_clip(x_mv, x_min, x_max);
327  y_mv = av_clip(y_mv, y_min, y_max);
328 
329  for (j = -me_ctx->mb_size / 2; j < me_ctx->mb_size * 3 / 2; j++)
330  for (i = -me_ctx->mb_size / 2; i < me_ctx->mb_size * 3 / 2; i++)
331  sad += FFABS(data_ref[x_mv + i + (y_mv + j) * linesize] - data_cur[x + i + (y + j) * linesize]);
332 
333  return sad + (FFABS(mv_x - me_ctx->pred_x) + FFABS(mv_y - me_ctx->pred_y)) * COST_PRED_SCALE;
334 }
335 
336 static int config_input(AVFilterLink *inlink)
337 {
338  MIContext *mi_ctx = inlink->dst->priv;
339  AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
340  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
341  const int height = inlink->h;
342  const int width = inlink->w;
343  int i;
344 
345  mi_ctx->log2_chroma_h = desc->log2_chroma_h;
346  mi_ctx->log2_chroma_w = desc->log2_chroma_w;
347  mi_ctx->bitdepth = desc->comp[0].depth;
348 
349  mi_ctx->nb_planes = av_pix_fmt_count_planes(inlink->format);
350 
351  mi_ctx->log2_mb_size = av_ceil_log2_c(mi_ctx->mb_size);
352  mi_ctx->mb_size = 1 << mi_ctx->log2_mb_size;
353 
354  mi_ctx->b_width = width >> mi_ctx->log2_mb_size;
355  mi_ctx->b_height = height >> mi_ctx->log2_mb_size;
356  mi_ctx->b_count = mi_ctx->b_width * mi_ctx->b_height;
357 
358  for (i = 0; i < NB_FRAMES; i++) {
359  Frame *frame = &mi_ctx->frames[i];
360  frame->blocks = av_mallocz_array(mi_ctx->b_count, sizeof(Block));
361  if (!frame->blocks)
362  return AVERROR(ENOMEM);
363  }
364 
365  if (mi_ctx->mi_mode == MI_MODE_MCI) {
366  if (mi_ctx->b_width < 2 || mi_ctx->b_height < 2) {
367  av_log(inlink->dst, AV_LOG_ERROR, "Height or width < %d\n",
368  2 * mi_ctx->mb_size);
369  return AVERROR(EINVAL);
370  }
371  ff_me_init_context(me_ctx, mi_ctx->mb_size, mi_ctx->search_param,
372  width, height, 0, (mi_ctx->b_width - 1) << mi_ctx->log2_mb_size,
373  0, (mi_ctx->b_height - 1) << mi_ctx->log2_mb_size);
374 
375  if (mi_ctx->me_mode == ME_MODE_BIDIR)
376  me_ctx->get_cost = &get_sad_ob;
377  else if (mi_ctx->me_mode == ME_MODE_BILAT)
378  me_ctx->get_cost = &get_sbad_ob;
379 
380  mi_ctx->pixel_mvs = av_mallocz_array(width * height, sizeof(PixelMVS));
381  mi_ctx->pixel_weights = av_mallocz_array(width * height, sizeof(PixelWeights));
382  mi_ctx->pixel_refs = av_mallocz_array(width * height, sizeof(PixelRefs));
383  if (!mi_ctx->pixel_mvs || !mi_ctx->pixel_weights || !mi_ctx->pixel_refs)
384  return AVERROR(ENOMEM);
385 
386  if (mi_ctx->me_mode == ME_MODE_BILAT)
387  if (!(mi_ctx->int_blocks = av_mallocz_array(mi_ctx->b_count, sizeof(Block))))
388  return AVERROR(ENOMEM);
389 
390  if (mi_ctx->me_method == AV_ME_METHOD_EPZS) {
391  for (i = 0; i < 3; i++) {
392  mi_ctx->mv_table[i] = av_mallocz_array(mi_ctx->b_count, sizeof(*mi_ctx->mv_table[0]));
393  if (!mi_ctx->mv_table[i])
394  return AVERROR(ENOMEM);
395  }
396  }
397  }
398 
399  if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
400  mi_ctx->sad = ff_scene_sad_get_fn(mi_ctx->bitdepth == 8 ? 8 : 16);
401  if (!mi_ctx->sad)
402  return AVERROR(EINVAL);
403  }
404 
405  return 0;
406 }
407 
408 static int config_output(AVFilterLink *outlink)
409 {
410  MIContext *mi_ctx = outlink->src->priv;
411 
412  outlink->frame_rate = mi_ctx->frame_rate;
413  outlink->time_base = av_inv_q(mi_ctx->frame_rate);
414 
415  return 0;
416 }
417 
418 #define ADD_PRED(preds, px, py)\
419  do {\
420  preds.mvs[preds.nb][0] = px;\
421  preds.mvs[preds.nb][1] = py;\
422  preds.nb++;\
423  } while(0)
424 
425 static void search_mv(MIContext *mi_ctx, Block *blocks, int mb_x, int mb_y, int dir)
426 {
427  AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
428  AVMotionEstPredictor *preds = me_ctx->preds;
429  Block *block = &blocks[mb_x + mb_y * mi_ctx->b_width];
430 
431  const int x_mb = mb_x << mi_ctx->log2_mb_size;
432  const int y_mb = mb_y << mi_ctx->log2_mb_size;
433  const int mb_i = mb_x + mb_y * mi_ctx->b_width;
434  int mv[2] = {x_mb, y_mb};
435 
436  switch (mi_ctx->me_method) {
437  case AV_ME_METHOD_ESA:
438  ff_me_search_esa(me_ctx, x_mb, y_mb, mv);
439  break;
440  case AV_ME_METHOD_TSS:
441  ff_me_search_tss(me_ctx, x_mb, y_mb, mv);
442  break;
443  case AV_ME_METHOD_TDLS:
444  ff_me_search_tdls(me_ctx, x_mb, y_mb, mv);
445  break;
446  case AV_ME_METHOD_NTSS:
447  ff_me_search_ntss(me_ctx, x_mb, y_mb, mv);
448  break;
449  case AV_ME_METHOD_FSS:
450  ff_me_search_fss(me_ctx, x_mb, y_mb, mv);
451  break;
452  case AV_ME_METHOD_DS:
453  ff_me_search_ds(me_ctx, x_mb, y_mb, mv);
454  break;
455  case AV_ME_METHOD_HEXBS:
456  ff_me_search_hexbs(me_ctx, x_mb, y_mb, mv);
457  break;
458  case AV_ME_METHOD_EPZS:
459 
460  preds[0].nb = 0;
461  preds[1].nb = 0;
462 
463  ADD_PRED(preds[0], 0, 0);
464 
465  //left mb in current frame
466  if (mb_x > 0)
467  ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - 1][dir][0], mi_ctx->mv_table[0][mb_i - 1][dir][1]);
468 
469  //top mb in current frame
470  if (mb_y > 0)
471  ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width][dir][0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width][dir][1]);
472 
473  //top-right mb in current frame
474  if (mb_y > 0 && mb_x + 1 < mi_ctx->b_width)
475  ADD_PRED(preds[0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width + 1][dir][0], mi_ctx->mv_table[0][mb_i - mi_ctx->b_width + 1][dir][1]);
476 
477  //median predictor
478  if (preds[0].nb == 4) {
479  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
480  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
481  } else if (preds[0].nb == 3) {
482  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
483  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
484  } else if (preds[0].nb == 2) {
485  me_ctx->pred_x = preds[0].mvs[1][0];
486  me_ctx->pred_y = preds[0].mvs[1][1];
487  } else {
488  me_ctx->pred_x = 0;
489  me_ctx->pred_y = 0;
490  }
491 
492  //collocated mb in prev frame
493  ADD_PRED(preds[0], mi_ctx->mv_table[1][mb_i][dir][0], mi_ctx->mv_table[1][mb_i][dir][1]);
494 
495  //accelerator motion vector of collocated block in prev frame
496  ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i][dir][0] + (mi_ctx->mv_table[1][mb_i][dir][0] - mi_ctx->mv_table[2][mb_i][dir][0]),
497  mi_ctx->mv_table[1][mb_i][dir][1] + (mi_ctx->mv_table[1][mb_i][dir][1] - mi_ctx->mv_table[2][mb_i][dir][1]));
498 
499  //left mb in prev frame
500  if (mb_x > 0)
501  ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i - 1][dir][0], mi_ctx->mv_table[1][mb_i - 1][dir][1]);
502 
503  //top mb in prev frame
504  if (mb_y > 0)
505  ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i - mi_ctx->b_width][dir][0], mi_ctx->mv_table[1][mb_i - mi_ctx->b_width][dir][1]);
506 
507  //right mb in prev frame
508  if (mb_x + 1 < mi_ctx->b_width)
509  ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i + 1][dir][0], mi_ctx->mv_table[1][mb_i + 1][dir][1]);
510 
511  //bottom mb in prev frame
512  if (mb_y + 1 < mi_ctx->b_height)
513  ADD_PRED(preds[1], mi_ctx->mv_table[1][mb_i + mi_ctx->b_width][dir][0], mi_ctx->mv_table[1][mb_i + mi_ctx->b_width][dir][1]);
514 
515  ff_me_search_epzs(me_ctx, x_mb, y_mb, mv);
516 
517  mi_ctx->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
518  mi_ctx->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
519 
520  break;
521  case AV_ME_METHOD_UMH:
522 
523  preds[0].nb = 0;
524 
525  ADD_PRED(preds[0], 0, 0);
526 
527  //left mb in current frame
528  if (mb_x > 0)
529  ADD_PRED(preds[0], blocks[mb_i - 1].mvs[dir][0], blocks[mb_i - 1].mvs[dir][1]);
530 
531  if (mb_y > 0) {
532  //top mb in current frame
533  ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width].mvs[dir][0], blocks[mb_i - mi_ctx->b_width].mvs[dir][1]);
534 
535  //top-right mb in current frame
536  if (mb_x + 1 < mi_ctx->b_width)
537  ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width + 1].mvs[dir][0], blocks[mb_i - mi_ctx->b_width + 1].mvs[dir][1]);
538  //top-left mb in current frame
539  else if (mb_x > 0)
540  ADD_PRED(preds[0], blocks[mb_i - mi_ctx->b_width - 1].mvs[dir][0], blocks[mb_i - mi_ctx->b_width - 1].mvs[dir][1]);
541  }
542 
543  //median predictor
544  if (preds[0].nb == 4) {
545  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
546  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
547  } else if (preds[0].nb == 3) {
548  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
549  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
550  } else if (preds[0].nb == 2) {
551  me_ctx->pred_x = preds[0].mvs[1][0];
552  me_ctx->pred_y = preds[0].mvs[1][1];
553  } else {
554  me_ctx->pred_x = 0;
555  me_ctx->pred_y = 0;
556  }
557 
558  ff_me_search_umh(me_ctx, x_mb, y_mb, mv);
559 
560  break;
561  }
562 
563  block->mvs[dir][0] = mv[0] - x_mb;
564  block->mvs[dir][1] = mv[1] - y_mb;
565 }
566 
567 static void bilateral_me(MIContext *mi_ctx)
568 {
569  Block *block;
570  int mb_x, mb_y;
571 
572  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
573  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
574  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
575 
576  block->cid = 0;
577  block->sb = 0;
578 
579  block->mvs[0][0] = 0;
580  block->mvs[0][1] = 0;
581  }
582 
583  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
584  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++)
585  search_mv(mi_ctx, mi_ctx->int_blocks, mb_x, mb_y, 0);
586 }
587 
588 static int var_size_bme(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n)
589 {
590  AVMotionEstContext *me_ctx = &mi_ctx->me_ctx;
591  uint64_t cost_sb, cost_old;
592  int mb_size = me_ctx->mb_size;
593  int search_param = me_ctx->search_param;
594  int mv_x, mv_y;
595  int x, y;
596  int ret;
597 
598  me_ctx->mb_size = 1 << n;
599  cost_old = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]);
600  me_ctx->mb_size = mb_size;
601 
602  if (!cost_old) {
603  block->sb = 0;
604  return 0;
605  }
606 
607  if (!block->subs) {
608  block->subs = av_mallocz_array(4, sizeof(Block));
609  if (!block->subs)
610  return AVERROR(ENOMEM);
611  }
612 
613  block->sb = 1;
614 
615  for (y = 0; y < 2; y++)
616  for (x = 0; x < 2; x++) {
617  Block *sb = &block->subs[x + y * 2];
618  int mv[2] = {x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]};
619 
620  me_ctx->mb_size = 1 << (n - 1);
621  me_ctx->search_param = 2;
622  me_ctx->pred_x = block->mvs[0][0];
623  me_ctx->pred_y = block->mvs[0][1];
624 
625  cost_sb = ff_me_search_ds(&mi_ctx->me_ctx, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1], mv);
626  mv_x = mv[0] - x_mb;
627  mv_y = mv[1] - y_mb;
628 
629  me_ctx->mb_size = mb_size;
630  me_ctx->search_param = search_param;
631 
632  if (cost_sb < cost_old / 4) {
633  sb->mvs[0][0] = mv_x;
634  sb->mvs[0][1] = mv_y;
635 
636  if (n > 1) {
637  if (ret = var_size_bme(mi_ctx, sb, x_mb + (x << (n - 1)), y_mb + (y << (n - 1)), n - 1))
638  return ret;
639  } else
640  sb->sb = 0;
641  } else {
642  block->sb = 0;
643  return 0;
644  }
645  }
646 
647  return 0;
648 }
649 
650 static int cluster_mvs(MIContext *mi_ctx)
651 {
652  int changed, c, c_max = 0;
653  int mb_x, mb_y, x, y;
654  int mv_x, mv_y, avg_x, avg_y, dx, dy;
655  int d, ret;
656  Block *block;
657  Cluster *cluster, *cluster_new;
658 
659  do {
660  changed = 0;
661  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
662  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
663  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
664  c = block->cid;
665  cluster = &mi_ctx->clusters[c];
666  mv_x = block->mvs[0][0];
667  mv_y = block->mvs[0][1];
668 
669  if (cluster->nb < 2)
670  continue;
671 
672  avg_x = cluster->sum[0] / cluster->nb;
673  avg_y = cluster->sum[1] / cluster->nb;
674  dx = avg_x - mv_x;
675  dy = avg_y - mv_y;
676 
677  if (FFABS(dx) > CLUSTER_THRESHOLD || FFABS(dy) > CLUSTER_THRESHOLD) {
678 
679  for (d = 1; d < 5; d++)
680  for (y = FFMAX(mb_y - d, 0); y < FFMIN(mb_y + d + 1, mi_ctx->b_height); y++)
681  for (x = FFMAX(mb_x - d, 0); x < FFMIN(mb_x + d + 1, mi_ctx->b_width); x++) {
682  Block *nb = &mi_ctx->int_blocks[x + y * mi_ctx->b_width];
683  if (nb->cid > block->cid) {
684  if (nb->cid < c || c == block->cid)
685  c = nb->cid;
686  }
687  }
688 
689  if (c == block->cid)
690  c = c_max + 1;
691 
692  if (c >= NB_CLUSTERS) {
693  continue;
694  }
695 
696  cluster_new = &mi_ctx->clusters[c];
697  cluster_new->sum[0] += mv_x;
698  cluster_new->sum[1] += mv_y;
699  cluster->sum[0] -= mv_x;
700  cluster->sum[1] -= mv_y;
701  cluster_new->nb++;
702  cluster->nb--;
703 
704  c_max = FFMAX(c_max, c);
705  block->cid = c;
706 
707  changed = 1;
708  }
709  }
710  } while (changed);
711 
712  /* find boundaries */
713  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
714  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
715  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
716  for (y = FFMAX(mb_y - 1, 0); y < FFMIN(mb_y + 2, mi_ctx->b_height); y++)
717  for (x = FFMAX(mb_x - 1, 0); x < FFMIN(mb_x + 2, mi_ctx->b_width); x++) {
718  dx = x - mb_x;
719  dy = y - mb_y;
720 
721  if ((x - mb_x) && (y - mb_y) || !dx && !dy)
722  continue;
723 
724  if (!mb_x || !mb_y || mb_x == mi_ctx->b_width - 1 || mb_y == mi_ctx->b_height - 1)
725  continue;
726 
727  if (block->cid != mi_ctx->int_blocks[x + y * mi_ctx->b_width].cid) {
728  if (!dx && block->cid == mi_ctx->int_blocks[x + (mb_y - dy) * mi_ctx->b_width].cid ||
729  !dy && block->cid == mi_ctx->int_blocks[(mb_x - dx) + y * mi_ctx->b_width].cid) {
730  if (ret = var_size_bme(mi_ctx, block, mb_x << mi_ctx->log2_mb_size, mb_y << mi_ctx->log2_mb_size, mi_ctx->log2_mb_size))
731  return ret;
732  }
733  }
734  }
735  }
736 
737  return 0;
738 }
739 
740 static int inject_frame(AVFilterLink *inlink, AVFrame *avf_in)
741 {
742  AVFilterContext *ctx = inlink->dst;
743  MIContext *mi_ctx = ctx->priv;
744  Frame frame_tmp;
745  int mb_x, mb_y, dir;
746 
747  av_frame_free(&mi_ctx->frames[0].avf);
748  frame_tmp = mi_ctx->frames[0];
749  memmove(&mi_ctx->frames[0], &mi_ctx->frames[1], sizeof(mi_ctx->frames[0]) * (NB_FRAMES - 1));
750  mi_ctx->frames[NB_FRAMES - 1] = frame_tmp;
751  mi_ctx->frames[NB_FRAMES - 1].avf = avf_in;
752 
753  if (mi_ctx->mi_mode == MI_MODE_MCI) {
754 
755  if (mi_ctx->me_method == AV_ME_METHOD_EPZS) {
756  mi_ctx->mv_table[2] = memcpy(mi_ctx->mv_table[2], mi_ctx->mv_table[1], sizeof(*mi_ctx->mv_table[1]) * mi_ctx->b_count);
757  mi_ctx->mv_table[1] = memcpy(mi_ctx->mv_table[1], mi_ctx->mv_table[0], sizeof(*mi_ctx->mv_table[0]) * mi_ctx->b_count);
758  }
759 
760  if (mi_ctx->me_mode == ME_MODE_BIDIR) {
761 
762  if (mi_ctx->frames[1].avf) {
763  for (dir = 0; dir < 2; dir++) {
764  mi_ctx->me_ctx.linesize = mi_ctx->frames[2].avf->linesize[0];
765  mi_ctx->me_ctx.data_cur = mi_ctx->frames[2].avf->data[0];
766  mi_ctx->me_ctx.data_ref = mi_ctx->frames[dir ? 3 : 1].avf->data[0];
767 
768  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
769  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++)
770  search_mv(mi_ctx, mi_ctx->frames[2].blocks, mb_x, mb_y, dir);
771  }
772  }
773 
774  } else if (mi_ctx->me_mode == ME_MODE_BILAT) {
775  Block *block;
776  int i, ret;
777 
778  if (!mi_ctx->frames[0].avf)
779  return 0;
780 
781  mi_ctx->me_ctx.linesize = mi_ctx->frames[0].avf->linesize[0];
782  mi_ctx->me_ctx.data_cur = mi_ctx->frames[1].avf->data[0];
783  mi_ctx->me_ctx.data_ref = mi_ctx->frames[2].avf->data[0];
784 
785  bilateral_me(mi_ctx);
786 
787  if (mi_ctx->mc_mode == MC_MODE_AOBMC) {
788 
789  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
790  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
791  int x_mb = mb_x << mi_ctx->log2_mb_size;
792  int y_mb = mb_y << mi_ctx->log2_mb_size;
793  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
794 
795  block->sbad = get_sbad(&mi_ctx->me_ctx, x_mb, y_mb, x_mb + block->mvs[0][0], y_mb + block->mvs[0][1]);
796  }
797  }
798 
799  if (mi_ctx->vsbmc) {
800 
801  for (i = 0; i < NB_CLUSTERS; i++) {
802  mi_ctx->clusters[i].sum[0] = 0;
803  mi_ctx->clusters[i].sum[1] = 0;
804  mi_ctx->clusters[i].nb = 0;
805  }
806 
807  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
808  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
809  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
810 
811  mi_ctx->clusters[0].sum[0] += block->mvs[0][0];
812  mi_ctx->clusters[0].sum[1] += block->mvs[0][1];
813  }
814 
815  mi_ctx->clusters[0].nb = mi_ctx->b_count;
816 
817  if (ret = cluster_mvs(mi_ctx))
818  return ret;
819  }
820  }
821  }
822 
823  return 0;
824 }
825 
826 static int detect_scene_change(AVFilterContext *ctx)
827 {
828  MIContext *mi_ctx = ctx->priv;
829  AVFilterLink *input = ctx->inputs[0];
830  uint8_t *p1 = mi_ctx->frames[1].avf->data[0];
831  ptrdiff_t linesize1 = mi_ctx->frames[1].avf->linesize[0];
832  uint8_t *p2 = mi_ctx->frames[2].avf->data[0];
833  ptrdiff_t linesize2 = mi_ctx->frames[2].avf->linesize[0];
834 
835  if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
836  double ret = 0, mafd, diff;
837  uint64_t sad;
838  mi_ctx->sad(p1, linesize1, p2, linesize2, input->w, input->h, &sad);
839  emms_c();
840  mafd = (double) sad * 100.0 / (input->h * input->w) / (1 << mi_ctx->bitdepth);
841  diff = fabs(mafd - mi_ctx->prev_mafd);
842  ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
843  mi_ctx->prev_mafd = mafd;
844 
845  return ret >= mi_ctx->scd_threshold;
846  }
847 
848  return 0;
849 }
850 
851 #define ADD_PIXELS(b_weight, mv_x, mv_y)\
852  do {\
853  if (!b_weight || pixel_refs->nb + 1 >= NB_PIXEL_MVS)\
854  continue;\
855  pixel_refs->refs[pixel_refs->nb] = 1;\
856  pixel_weights->weights[pixel_refs->nb] = b_weight * (ALPHA_MAX - alpha);\
857  pixel_mvs->mvs[pixel_refs->nb][0] = av_clip((mv_x * alpha) / ALPHA_MAX, x_min, x_max);\
858  pixel_mvs->mvs[pixel_refs->nb][1] = av_clip((mv_y * alpha) / ALPHA_MAX, y_min, y_max);\
859  pixel_refs->nb++;\
860  pixel_refs->refs[pixel_refs->nb] = 2;\
861  pixel_weights->weights[pixel_refs->nb] = b_weight * alpha;\
862  pixel_mvs->mvs[pixel_refs->nb][0] = av_clip(-mv_x * (ALPHA_MAX - alpha) / ALPHA_MAX, x_min, x_max);\
863  pixel_mvs->mvs[pixel_refs->nb][1] = av_clip(-mv_y * (ALPHA_MAX - alpha) / ALPHA_MAX, y_min, y_max);\
864  pixel_refs->nb++;\
865  } while(0)
866 
867 static void bidirectional_obmc(MIContext *mi_ctx, int alpha)
868 {
869  int x, y;
870  int width = mi_ctx->frames[0].avf->width;
871  int height = mi_ctx->frames[0].avf->height;
872  int mb_y, mb_x, dir;
873 
874  for (y = 0; y < height; y++)
875  for (x = 0; x < width; x++)
876  mi_ctx->pixel_refs[x + y * width].nb = 0;
877 
878  for (dir = 0; dir < 2; dir++)
879  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
880  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
881  int a = dir ? alpha : (ALPHA_MAX - alpha);
882  int mv_x = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][0];
883  int mv_y = mi_ctx->frames[2 - dir].blocks[mb_x + mb_y * mi_ctx->b_width].mvs[dir][1];
884  int start_x, start_y;
885  int startc_x, startc_y, endc_x, endc_y;
886 
887  start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_x * a / ALPHA_MAX;
888  start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2 + mv_y * a / ALPHA_MAX;
889 
890  startc_x = av_clip(start_x, 0, width - 1);
891  startc_y = av_clip(start_y, 0, height - 1);
892  endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
893  endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
894 
895  if (dir) {
896  mv_x = -mv_x;
897  mv_y = -mv_y;
898  }
899 
900  for (y = startc_y; y < endc_y; y++) {
901  int y_min = -y;
902  int y_max = height - y - 1;
903  for (x = startc_x; x < endc_x; x++) {
904  int x_min = -x;
905  int x_max = width - x - 1;
906  int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
907  PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
908  PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
909  PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
910 
911  ADD_PIXELS(obmc_weight, mv_x, mv_y);
912  }
913  }
914  }
915 }
916 
917 static void set_frame_data(MIContext *mi_ctx, int alpha, AVFrame *avf_out)
918 {
919  int x, y, plane;
920 
921  for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
922  int width = avf_out->width;
923  int height = avf_out->height;
924  int chroma = plane == 1 || plane == 2;
925 
926  for (y = 0; y < height; y++)
927  for (x = 0; x < width; x++) {
928  int x_mv, y_mv;
929  int weight_sum = 0;
930  int i, val = 0;
931  PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * avf_out->width];
932  PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * avf_out->width];
933  PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * avf_out->width];
934 
935  for (i = 0; i < pixel_refs->nb; i++)
936  weight_sum += pixel_weights->weights[i];
937 
938  if (!weight_sum || !pixel_refs->nb) {
939  pixel_weights->weights[0] = ALPHA_MAX - alpha;
940  pixel_refs->refs[0] = 1;
941  pixel_mvs->mvs[0][0] = 0;
942  pixel_mvs->mvs[0][1] = 0;
943  pixel_weights->weights[1] = alpha;
944  pixel_refs->refs[1] = 2;
945  pixel_mvs->mvs[1][0] = 0;
946  pixel_mvs->mvs[1][1] = 0;
947  pixel_refs->nb = 2;
948 
949  weight_sum = ALPHA_MAX;
950  }
951 
952  for (i = 0; i < pixel_refs->nb; i++) {
953  Frame *frame = &mi_ctx->frames[pixel_refs->refs[i]];
954  if (chroma) {
955  x_mv = (x >> mi_ctx->log2_chroma_w) + pixel_mvs->mvs[i][0] / (1 << mi_ctx->log2_chroma_w);
956  y_mv = (y >> mi_ctx->log2_chroma_h) + pixel_mvs->mvs[i][1] / (1 << mi_ctx->log2_chroma_h);
957  } else {
958  x_mv = x + pixel_mvs->mvs[i][0];
959  y_mv = y + pixel_mvs->mvs[i][1];
960  }
961 
962  val += pixel_weights->weights[i] * frame->avf->data[plane][x_mv + y_mv * frame->avf->linesize[plane]];
963  }
964 
965  val = ROUNDED_DIV(val, weight_sum);
966 
967  if (chroma)
968  avf_out->data[plane][(x >> mi_ctx->log2_chroma_w) + (y >> mi_ctx->log2_chroma_h) * avf_out->linesize[plane]] = val;
969  else
970  avf_out->data[plane][x + y * avf_out->linesize[plane]] = val;
971  }
972  }
973 }
974 
975 static void var_size_bmc(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n, int alpha)
976 {
977  int sb_x, sb_y;
978  int width = mi_ctx->frames[0].avf->width;
979  int height = mi_ctx->frames[0].avf->height;
980 
981  for (sb_y = 0; sb_y < 2; sb_y++)
982  for (sb_x = 0; sb_x < 2; sb_x++) {
983  Block *sb = &block->subs[sb_x + sb_y * 2];
984 
985  if (sb->sb)
986  var_size_bmc(mi_ctx, sb, x_mb + (sb_x << (n - 1)), y_mb + (sb_y << (n - 1)), n - 1, alpha);
987  else {
988  int x, y;
989  int mv_x = sb->mvs[0][0] * 2;
990  int mv_y = sb->mvs[0][1] * 2;
991 
992  int start_x = x_mb + (sb_x << (n - 1));
993  int start_y = y_mb + (sb_y << (n - 1));
994  int end_x = start_x + (1 << (n - 1));
995  int end_y = start_y + (1 << (n - 1));
996 
997  for (y = start_y; y < end_y; y++) {
998  int y_min = -y;
999  int y_max = height - y - 1;
1000  for (x = start_x; x < end_x; x++) {
1001  int x_min = -x;
1002  int x_max = width - x - 1;
1003  PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1004  PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1005  PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1006 
1007  ADD_PIXELS(PX_WEIGHT_MAX, mv_x, mv_y);
1008  }
1009  }
1010  }
1011  }
1012 }
1013 
1014 static void bilateral_obmc(MIContext *mi_ctx, Block *block, int mb_x, int mb_y, int alpha)
1015 {
1016  int x, y;
1017  int width = mi_ctx->frames[0].avf->width;
1018  int height = mi_ctx->frames[0].avf->height;
1019 
1020  Block *nb;
1021  int nb_x, nb_y;
1022  uint64_t sbads[9];
1023 
1024  int mv_x = block->mvs[0][0] * 2;
1025  int mv_y = block->mvs[0][1] * 2;
1026  int start_x, start_y;
1027  int startc_x, startc_y, endc_x, endc_y;
1028 
1029  if (mi_ctx->mc_mode == MC_MODE_AOBMC)
1030  for (nb_y = FFMAX(0, mb_y - 1); nb_y < FFMIN(mb_y + 2, mi_ctx->b_height); nb_y++)
1031  for (nb_x = FFMAX(0, mb_x - 1); nb_x < FFMIN(mb_x + 2, mi_ctx->b_width); nb_x++) {
1032  int x_nb = nb_x << mi_ctx->log2_mb_size;
1033  int y_nb = nb_y << mi_ctx->log2_mb_size;
1034 
1035  if (nb_x - mb_x || nb_y - mb_y)
1036  sbads[nb_x - mb_x + 1 + (nb_y - mb_y + 1) * 3] = get_sbad(&mi_ctx->me_ctx, x_nb, y_nb, x_nb + block->mvs[0][0], y_nb + block->mvs[0][1]);
1037  }
1038 
1039  start_x = (mb_x << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1040  start_y = (mb_y << mi_ctx->log2_mb_size) - mi_ctx->mb_size / 2;
1041 
1042  startc_x = av_clip(start_x, 0, width - 1);
1043  startc_y = av_clip(start_y, 0, height - 1);
1044  endc_x = av_clip(start_x + (2 << mi_ctx->log2_mb_size), 0, width - 1);
1045  endc_y = av_clip(start_y + (2 << mi_ctx->log2_mb_size), 0, height - 1);
1046 
1047  for (y = startc_y; y < endc_y; y++) {
1048  int y_min = -y;
1049  int y_max = height - y - 1;
1050  for (x = startc_x; x < endc_x; x++) {
1051  int x_min = -x;
1052  int x_max = width - x - 1;
1053  int obmc_weight = obmc_tab_linear[4 - mi_ctx->log2_mb_size][(x - start_x) + ((y - start_y) << (mi_ctx->log2_mb_size + 1))];
1054  PixelMVS *pixel_mvs = &mi_ctx->pixel_mvs[x + y * width];
1055  PixelWeights *pixel_weights = &mi_ctx->pixel_weights[x + y * width];
1056  PixelRefs *pixel_refs = &mi_ctx->pixel_refs[x + y * width];
1057 
1058  if (mi_ctx->mc_mode == MC_MODE_AOBMC) {
1059  nb_x = (((x - start_x) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1060  nb_y = (((y - start_y) >> (mi_ctx->log2_mb_size - 1)) * 2 - 3) / 2;
1061 
1062  if (nb_x || nb_y) {
1063  uint64_t sbad = sbads[nb_x + 1 + (nb_y + 1) * 3];
1064  nb = &mi_ctx->int_blocks[mb_x + nb_x + (mb_y + nb_y) * mi_ctx->b_width];
1065 
1066  if (sbad && sbad != UINT64_MAX && nb->sbad != UINT64_MAX) {
1067  int phi = av_clip(ALPHA_MAX * nb->sbad / sbad, 0, ALPHA_MAX);
1068  obmc_weight = obmc_weight * phi / ALPHA_MAX;
1069  }
1070  }
1071  }
1072 
1073  ADD_PIXELS(obmc_weight, mv_x, mv_y);
1074  }
1075  }
1076 }
1077 
1078 static void interpolate(AVFilterLink *inlink, AVFrame *avf_out)
1079 {
1080  AVFilterContext *ctx = inlink->dst;
1081  AVFilterLink *outlink = ctx->outputs[0];
1082  MIContext *mi_ctx = ctx->priv;
1083  int x, y;
1084  int plane, alpha;
1085  int64_t pts;
1086 
1087  pts = av_rescale(avf_out->pts, (int64_t) ALPHA_MAX * outlink->time_base.num * inlink->time_base.den,
1088  (int64_t) outlink->time_base.den * inlink->time_base.num);
1089 
1090  alpha = (pts - mi_ctx->frames[1].avf->pts * ALPHA_MAX) / (mi_ctx->frames[2].avf->pts - mi_ctx->frames[1].avf->pts);
1091  alpha = av_clip(alpha, 0, ALPHA_MAX);
1092 
1093  if (alpha == 0 || alpha == ALPHA_MAX) {
1094  av_frame_copy(avf_out, alpha ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1095  return;
1096  }
1097 
1098  if (mi_ctx->scene_changed) {
1099  av_log(ctx, AV_LOG_DEBUG, "scene changed, input pts %"PRId64"\n", mi_ctx->frames[1].avf->pts);
1100  /* duplicate frame */
1101  av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1102  return;
1103  }
1104 
1105  switch(mi_ctx->mi_mode) {
1106  case MI_MODE_DUP:
1107  av_frame_copy(avf_out, alpha > ALPHA_MAX / 2 ? mi_ctx->frames[2].avf : mi_ctx->frames[1].avf);
1108 
1109  break;
1110  case MI_MODE_BLEND:
1111  for (plane = 0; plane < mi_ctx->nb_planes; plane++) {
1112  int width = avf_out->width;
1113  int height = avf_out->height;
1114 
1115  if (plane == 1 || plane == 2) {
1116  width = AV_CEIL_RSHIFT(width, mi_ctx->log2_chroma_w);
1117  height = AV_CEIL_RSHIFT(height, mi_ctx->log2_chroma_h);
1118  }
1119 
1120  for (y = 0; y < height; y++) {
1121  for (x = 0; x < width; x++) {
1122  avf_out->data[plane][x + y * avf_out->linesize[plane]] =
1123  (alpha * mi_ctx->frames[2].avf->data[plane][x + y * mi_ctx->frames[2].avf->linesize[plane]] +
1124  (ALPHA_MAX - alpha) * mi_ctx->frames[1].avf->data[plane][x + y * mi_ctx->frames[1].avf->linesize[plane]] + 512) >> 10;
1125  }
1126  }
1127  }
1128 
1129  break;
1130  case MI_MODE_MCI:
1131  if (mi_ctx->me_mode == ME_MODE_BIDIR) {
1132  bidirectional_obmc(mi_ctx, alpha);
1133  set_frame_data(mi_ctx, alpha, avf_out);
1134 
1135  } else if (mi_ctx->me_mode == ME_MODE_BILAT) {
1136  int mb_x, mb_y;
1137  Block *block;
1138 
1139  for (y = 0; y < mi_ctx->frames[0].avf->height; y++)
1140  for (x = 0; x < mi_ctx->frames[0].avf->width; x++)
1141  mi_ctx->pixel_refs[x + y * mi_ctx->frames[0].avf->width].nb = 0;
1142 
1143  for (mb_y = 0; mb_y < mi_ctx->b_height; mb_y++)
1144  for (mb_x = 0; mb_x < mi_ctx->b_width; mb_x++) {
1145  block = &mi_ctx->int_blocks[mb_x + mb_y * mi_ctx->b_width];
1146 
1147  if (block->sb)
1148  var_size_bmc(mi_ctx, block, mb_x << mi_ctx->log2_mb_size, mb_y << mi_ctx->log2_mb_size, mi_ctx->log2_mb_size, alpha);
1149 
1150  bilateral_obmc(mi_ctx, block, mb_x, mb_y, alpha);
1151 
1152  }
1153 
1154  set_frame_data(mi_ctx, alpha, avf_out);
1155  }
1156 
1157  break;
1158  }
1159 }
1160 
1161 static int filter_frame(AVFilterLink *inlink, AVFrame *avf_in)
1162 {
1163  AVFilterContext *ctx = inlink->dst;
1164  AVFilterLink *outlink = ctx->outputs[0];
1165  MIContext *mi_ctx = ctx->priv;
1166  int ret;
1167 
1168  if (avf_in->pts == AV_NOPTS_VALUE) {
1169  ret = ff_filter_frame(ctx->outputs[0], avf_in);
1170  return ret;
1171  }
1172 
1173  if (!mi_ctx->frames[NB_FRAMES - 1].avf || avf_in->pts < mi_ctx->frames[NB_FRAMES - 1].avf->pts) {
1174  av_log(ctx, AV_LOG_VERBOSE, "Initializing out pts from input pts %"PRId64"\n", avf_in->pts);
1175  mi_ctx->out_pts = av_rescale_q(avf_in->pts, inlink->time_base, outlink->time_base);
1176  }
1177 
1178  if (!mi_ctx->frames[NB_FRAMES - 1].avf)
1179  if (ret = inject_frame(inlink, av_frame_clone(avf_in)))
1180  return ret;
1181 
1182  if (ret = inject_frame(inlink, avf_in))
1183  return ret;
1184 
1185  if (!mi_ctx->frames[0].avf)
1186  return 0;
1187 
1188  mi_ctx->scene_changed = detect_scene_change(ctx);
1189 
1190  for (;;) {
1191  AVFrame *avf_out;
1192 
1193  if (av_compare_ts(mi_ctx->out_pts, outlink->time_base, mi_ctx->frames[2].avf->pts, inlink->time_base) > 0)
1194  break;
1195 
1196  if (!(avf_out = ff_get_video_buffer(ctx->outputs[0], inlink->w, inlink->h)))
1197  return AVERROR(ENOMEM);
1198 
1199  av_frame_copy_props(avf_out, mi_ctx->frames[NB_FRAMES - 1].avf);
1200  avf_out->pts = mi_ctx->out_pts++;
1201 
1202  interpolate(inlink, avf_out);
1203 
1204  if ((ret = ff_filter_frame(ctx->outputs[0], avf_out)) < 0)
1205  return ret;
1206  }
1207 
1208  return 0;
1209 }
1210 
1211 static av_cold void free_blocks(Block *block, int sb)
1212 {
1213  if (block->subs)
1214  free_blocks(block->subs, 1);
1215  if (sb)
1216  av_freep(&block);
1217 }
1218 
1219 static av_cold void uninit(AVFilterContext *ctx)
1220 {
1221  MIContext *mi_ctx = ctx->priv;
1222  int i, m;
1223 
1224  av_freep(&mi_ctx->pixel_mvs);
1225  av_freep(&mi_ctx->pixel_weights);
1226  av_freep(&mi_ctx->pixel_refs);
1227  if (mi_ctx->int_blocks)
1228  for (m = 0; m < mi_ctx->b_count; m++)
1229  free_blocks(&mi_ctx->int_blocks[m], 0);
1230  av_freep(&mi_ctx->int_blocks);
1231 
1232  for (i = 0; i < NB_FRAMES; i++) {
1233  Frame *frame = &mi_ctx->frames[i];
1234  av_freep(&frame->blocks);
1235  av_frame_free(&frame->avf);
1236  }
1237 
1238  for (i = 0; i < 3; i++)
1239  av_freep(&mi_ctx->mv_table[i]);
1240 }
1241 
1242 static const AVFilterPad minterpolate_inputs[] = {
1243  {
1244  .name = "default",
1245  .type = AVMEDIA_TYPE_VIDEO,
1246  .filter_frame = filter_frame,
1247  .config_props = config_input,
1248  },
1249  { NULL }
1250 };
1251 
1252 static const AVFilterPad minterpolate_outputs[] = {
1253  {
1254  .name = "default",
1255  .type = AVMEDIA_TYPE_VIDEO,
1256  .config_props = config_output,
1257  },
1258  { NULL }
1259 };
1260 
1261 const AVFilter ff_vf_minterpolate = {
1262  .name = "minterpolate",
1263  .description = NULL_IF_CONFIG_SMALL("Frame rate conversion using Motion Interpolation."),
1264  .priv_size = sizeof(MIContext),
1265  .priv_class = &minterpolate_class,
1266  .uninit = uninit,
1267  .query_formats = query_formats,
1268  .inputs = minterpolate_inputs,
1269  .outputs = minterpolate_outputs,
1270 };
MC_MODE_OBMC
#define MC_MODE_OBMC
Definition: vf_minterpolate.c:38
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
AVMotionEstPredictor::nb
int nb
Definition: motion_estimation.h:38
MIContext::bitdepth
int bitdepth
Definition: vf_minterpolate.c:188
Frame::avf
AVFrame * avf
Definition: vf_minterpolate.c:162
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:122
obmc_linear32
static const uint8_t obmc_linear32[1024]
Definition: vf_minterpolate.c:53
AVMotionEstContext::data_ref
uint8_t * data_ref
Definition: motion_estimation.h:42
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *avf_in)
Definition: vf_minterpolate.c:1161
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
PX_WEIGHT_MAX
#define PX_WEIGHT_MAX
Definition: vf_minterpolate.c:50
inject_frame
static int inject_frame(AVFilterLink *inlink, AVFrame *avf_in)
Definition: vf_minterpolate.c:740
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
av_compare_ts
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare two timestamps each in its own time base.
Definition: mathematics.c:147
AVMotionEstPredictor
Definition: motion_estimation.h:36
MIContext::scd_threshold
double scd_threshold
Definition: vf_minterpolate.c:194
MIContext::int_blocks
Block * int_blocks
Definition: vf_minterpolate.c:180
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
PixelWeights::weights
uint32_t weights[NB_PIXEL_MVS]
Definition: vf_minterpolate.c:153
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
minterpolate_outputs
static const AVFilterPad minterpolate_outputs[]
Definition: vf_minterpolate.c:1252
AV_OPT_TYPE_VIDEO_RATE
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:238
obmc_linear4
static const uint8_t obmc_linear4[16]
Definition: vf_minterpolate.c:118
ff_me_search_esa
uint64_t ff_me_search_esa(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:77
MIContext::pixel_weights
PixelWeights * pixel_weights
Definition: vf_minterpolate.c:182
bilateral_me
static void bilateral_me(MIContext *mi_ctx)
Definition: vf_minterpolate.c:567
mv
static const int8_t mv[256][2]
Definition: 4xm.c:79
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
AVMotionEstContext::data_cur
uint8_t * data_cur
Definition: motion_estimation.h:42
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:396
AVFrame::width
int width
Definition: frame.h:361
PixelRefs::refs
int8_t refs[NB_PIXEL_MVS]
Definition: vf_minterpolate.c:157
AVOption
AVOption.
Definition: opt.h:248
FLAGS
#define FLAGS
Definition: vf_minterpolate.c:202
chroma
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror, int jobnr, int nb_jobs)
Definition: vf_waveform.c:1624
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_minterpolate.c:239
MIContext::pixel_refs
PixelRefs * pixel_refs
Definition: vf_minterpolate.c:183
av_mallocz_array
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:197
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:197
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
SCD_METHOD_FDIFF
#define SCD_METHOD_FDIFF
Definition: vf_minterpolate.c:42
minterpolate_inputs
static const AVFilterPad minterpolate_inputs[]
Definition: vf_minterpolate.c:1242
Frame
Definition: ffplay.c:155
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
MIContext::b_count
int b_count
Definition: vf_minterpolate.c:186
obmc_tab_linear
static const uint8_t *const obmc_tab_linear[4]
Definition: vf_minterpolate.c:125
Block::sb
int sb
Definition: vf_minterpolate.c:144
video.h
AV_ME_METHOD_FSS
#define AV_ME_METHOD_FSS
Definition: motion_estimation.h:30
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
AVMotionEstContext::pred_x
int pred_x
median predictor x
Definition: motion_estimation.h:56
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:65
ff_me_search_ntss
uint64_t ff_me_search_ntss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:159
formats.h
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2581
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_minterpolate.c:336
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:348
MI_MODE_BLEND
@ MI_MODE_BLEND
Definition: vf_minterpolate.c:131
MIMode
MIMode
Definition: vf_minterpolate.c:129
MIContext::b_width
int b_width
Definition: vf_minterpolate.c:186
Cluster
Definition: vf_minterpolate.c:135
PixelMVS::mvs
int16_t mvs[NB_PIXEL_MVS][2]
Definition: vf_minterpolate.c:149
COST_PRED_SCALE
#define COST_PRED_SCALE
Definition: vf_minterpolate.c:51
val
static double val(void *priv, double ch)
Definition: aeval.c:76
pts
static int64_t pts
Definition: transcode_aac.c:652
MIContext::mv_table
int(*[3] mv_table)[2][2]
Definition: vf_minterpolate.c:184
AV_ME_METHOD_ESA
#define AV_ME_METHOD_ESA
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
Definition: motion_estimation.h:26
ff_me_search_tss
uint64_t ff_me_search_tss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:96
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
avassert.h
MIContext::log2_chroma_h
int log2_chroma_h
Definition: vf_minterpolate.c:197
SCD_METHOD_NONE
#define SCD_METHOD_NONE
Definition: vf_minterpolate.c:41
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
av_cold
#define av_cold
Definition: attributes.h:90
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:580
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
motion_vector.h
CONST
#define CONST(name, help, val, unit)
Definition: vf_minterpolate.c:203
AV_ME_METHOD_TSS
#define AV_ME_METHOD_TSS
Definition: motion_estimation.h:27
width
#define width
set_frame_data
static void set_frame_data(MIContext *mi_ctx, int alpha, AVFrame *avf_out)
Definition: vf_minterpolate.c:917
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
get_sad_ob
static uint64_t get_sad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
Definition: vf_minterpolate.c:310
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
MIContext::prev_mafd
double prev_mafd
Definition: vf_minterpolate.c:193
AVMotionEstContext::x_max
int x_max
Definition: motion_estimation.h:52
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
AVMotionEstContext::x_min
int x_min
Definition: motion_estimation.h:51
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
MIContext::me_ctx
AVMotionEstContext me_ctx
Definition: vf_minterpolate.c:168
ME_MODE_BILAT
#define ME_MODE_BILAT
Definition: vf_minterpolate.c:36
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:202
MI_MODE_DUP
@ MI_MODE_DUP
Definition: vf_minterpolate.c:130
ctx
AVFormatContext * ctx
Definition: movenc.c:48
PixelRefs::nb
int nb
Definition: vf_minterpolate.c:158
var_size_bmc
static void var_size_bmc(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n, int alpha)
Definition: vf_minterpolate.c:975
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:423
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
ADD_PIXELS
#define ADD_PIXELS(b_weight, mv_x, mv_y)
Definition: vf_minterpolate.c:851
ff_me_search_fss
uint64_t ff_me_search_fss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:212
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
PixelWeights
Definition: vf_minterpolate.c:152
AVMotionEstContext
Definition: motion_estimation.h:41
Cluster::sum
int64_t sum[2]
Definition: vf_minterpolate.c:136
MI_MODE_MCI
@ MI_MODE_MCI
Definition: vf_minterpolate.c:132
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
ff_me_search_ds
uint64_t ff_me_search_ds(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:244
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
if
if(ret)
Definition: filter_design.txt:179
get_sbad_ob
static uint64_t get_sbad_ob(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
Definition: vf_minterpolate.c:284
ff_scene_sad_get_fn
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition: scene_sad.c:59
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
fabs
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
NULL
#define NULL
Definition: coverity.c:32
AVMotionEstContext::search_param
int search_param
Definition: motion_estimation.h:46
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:536
MIContext::mi_mode
enum MIMode mi_mode
Definition: vf_minterpolate.c:170
PixelMVS
Definition: vf_minterpolate.c:148
MIContext::frames
Frame frames[NB_FRAMES]
Definition: vf_minterpolate.c:178
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
CLUSTER_THRESHOLD
#define CLUSTER_THRESHOLD
Definition: vf_minterpolate.c:49
MIContext::b_height
int b_height
Definition: vf_minterpolate.c:186
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
av_clipf
#define av_clipf
Definition: common.h:170
bidirectional_obmc
static void bidirectional_obmc(MIContext *mi_ctx, int alpha)
Definition: vf_minterpolate.c:867
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition: common.h:56
motion_estimation.h
mathops.h
Frame::blocks
Block * blocks
Definition: vf_minterpolate.c:163
ff_vf_minterpolate
const AVFilter ff_vf_minterpolate
Definition: vf_minterpolate.c:1261
Block::mvs
int16_t mvs[2][2]
Definition: vf_minterpolate.c:141
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
Block::subs
struct Block * subs
Definition: vf_minterpolate.c:145
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
scene_sad.h
obmc_linear8
static const uint8_t obmc_linear8[64]
Definition: vf_minterpolate.c:107
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
get_sbad
static uint64_t get_sbad(AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
Definition: vf_minterpolate.c:259
NB_PIXEL_MVS
#define NB_PIXEL_MVS
Definition: vf_minterpolate.c:45
Block
Definition: flashsv2enc.c:69
free_blocks
static av_cold void free_blocks(Block *block, int sb)
Definition: vf_minterpolate.c:1211
ff_me_search_hexbs
uint64_t ff_me_search_hexbs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:299
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
av_frame_copy
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:677
AVMotionEstContext::y_min
int y_min
Definition: motion_estimation.h:53
ff_me_search_epzs
uint64_t ff_me_search_epzs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:332
detect_scene_change
static int detect_scene_change(AVFilterContext *ctx)
Definition: vf_minterpolate.c:826
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
search_mv
static void search_mv(MIContext *mi_ctx, Block *blocks, int mb_x, int mb_y, int dir)
Definition: vf_minterpolate.c:425
ff_scene_sad_fn
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition: scene_sad.h:34
MIContext::pixel_mvs
PixelMVS * pixel_mvs
Definition: vf_minterpolate.c:181
MIContext::mb_size
int mb_size
Definition: vf_minterpolate.c:174
OFFSET
#define OFFSET(x)
Definition: vf_minterpolate.c:201
MIContext::mc_mode
int mc_mode
Definition: vf_minterpolate.c:171
MIContext::scene_changed
int scene_changed
Definition: vf_minterpolate.c:191
height
#define height
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
AV_ME_METHOD_EPZS
#define AV_ME_METHOD_EPZS
Definition: motion_estimation.h:33
interpolate
static void interpolate(AVFilterLink *inlink, AVFrame *avf_out)
Definition: vf_minterpolate.c:1078
MIContext::scd_method
int scd_method
Definition: vf_minterpolate.c:190
input
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
Definition: filter_design.txt:172
Cluster::nb
int nb
Definition: vf_minterpolate.c:137
MIContext::sad
ff_scene_sad_fn sad
Definition: vf_minterpolate.c:192
internal.h
ME_MODE_BIDIR
#define ME_MODE_BIDIR
Copyright (c) 2014-2015 Michael Niedermayer michaelni@gmx.at Copyright (c) 2016 Davinder Singh (DSM_)...
Definition: vf_minterpolate.c:35
AV_ME_METHOD_DS
#define AV_ME_METHOD_DS
Definition: motion_estimation.h:31
i
int i
Definition: input.c:407
MIContext::me_method
int me_method
Definition: vf_minterpolate.c:173
MIContext::out_pts
int64_t out_pts
Definition: vf_minterpolate.c:185
AV_ME_METHOD_HEXBS
#define AV_ME_METHOD_HEXBS
Definition: motion_estimation.h:32
common.h
ADD_PRED
#define ADD_PRED(preds, px, py)
Definition: vf_minterpolate.c:418
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
MIContext::nb_planes
int nb_planes
Definition: vf_minterpolate.c:198
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
minterpolate_options
static const AVOption minterpolate_options[]
Definition: vf_minterpolate.c:205
av_rescale
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
MC_MODE_AOBMC
#define MC_MODE_AOBMC
Definition: vf_minterpolate.c:39
ff_me_search_tdls
uint64_t ff_me_search_tdls(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:127
AVFilter
Filter definition.
Definition: avfilter.h:145
mid_pred
#define mid_pred
Definition: mathops.h:97
ret
ret
Definition: filter_design.txt:187
MIContext::log2_chroma_w
int log2_chroma_w
Definition: vf_minterpolate.c:196
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
obmc_linear16
static const uint8_t obmc_linear16[256]
Definition: vf_minterpolate.c:88
Block::cid
int cid
Definition: vf_minterpolate.c:142
AVMotionEstContext::y_max
int y_max
Definition: motion_estimation.h:54
ff_me_init_context
void ff_me_init_context(AVMotionEstContext *me_ctx, int mb_size, int search_param, int width, int height, int x_min, int x_max, int y_min, int y_max)
Definition: motion_estimation.c:45
AVFrame::height
int height
Definition: frame.h:361
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(minterpolate)
AV_ME_METHOD_UMH
#define AV_ME_METHOD_UMH
Definition: motion_estimation.h:34
var_size_bme
static int var_size_bme(MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n)
Definition: vf_minterpolate.c:588
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
ALPHA_MAX
#define ALPHA_MAX
Definition: vf_minterpolate.c:48
MIContext::me_mode
int me_mode
Definition: vf_minterpolate.c:172
AVMotionEstContext::pred_y
int pred_y
median predictor y
Definition: motion_estimation.h:57
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
MIContext::vsbmc
int vsbmc
Definition: vf_minterpolate.c:176
cluster_mvs
static int cluster_mvs(MIContext *mi_ctx)
Definition: vf_minterpolate.c:650
AV_ME_METHOD_NTSS
#define AV_ME_METHOD_NTSS
Definition: motion_estimation.h:29
AVMotionEstContext::linesize
int linesize
Definition: motion_estimation.h:43
NB_FRAMES
#define NB_FRAMES
Definition: vf_minterpolate.c:44
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
diff
static av_always_inline int diff(const uint32_t a, const uint32_t b)
Definition: vf_palettegen.c:136
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
MIContext::frame_rate
AVRational frame_rate
Definition: vf_minterpolate.c:169
MIContext::clusters
Cluster clusters[NB_CLUSTERS]
Definition: vf_minterpolate.c:179
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
d
d
Definition: ffmpeg_filter.c:156
NB_CLUSTERS
#define NB_CLUSTERS
Definition: vf_minterpolate.c:46
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_minterpolate.c:408
ff_me_search_umh
uint64_t ff_me_search_umh(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Definition: motion_estimation.c:373
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int log2_mb_size
Definition: vf_minterpolate.c:187
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int search_param
Definition: vf_minterpolate.c:175
AVMotionEstPredictor::mvs
int mvs[10][2]
Definition: motion_estimation.h:37
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#define AV_ME_METHOD_TDLS
Definition: motion_estimation.h:28
int
int
Definition: ffmpeg_filter.c:156
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Definition: vf_minterpolate.c:156
Block::sbad
uint64_t sbad
Definition: vf_minterpolate.c:143
AVMotionEstContext::preds
AVMotionEstPredictor preds[2]
Definition: motion_estimation.h:58
AVMotionEstContext::get_cost
uint64_t(* get_cost)(struct AVMotionEstContext *me_ctx, int x_mb, int y_mb, int mv_x, int mv_y)
Definition: motion_estimation.h:60
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static void bilateral_obmc(MIContext *mi_ctx, Block *block, int mb_x, int mb_y, int alpha)
Definition: vf_minterpolate.c:1014
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AVMotionEstContext::mb_size
int mb_size
Definition: motion_estimation.h:45
av_ceil_log2_c
static av_always_inline av_const int av_ceil_log2_c(int x)
Compute ceil(log2(x)).
Definition: common.h:444
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Definition: vf_minterpolate.c:166
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_minterpolate.c:1219
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