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vf_mestimate.c
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1 /**
2  * Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "motion_estimation.h"
22 #include "libavcodec/mathops.h"
23 #include "libavutil/avassert.h"
24 #include "libavutil/common.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 
34 typedef struct MEContext {
35  const AVClass *class;
37  int method; ///< motion estimation method
38 
39  int mb_size; ///< macroblock size
40  int search_param; ///< search parameter
43 
45 
46  int (*mv_table[3])[2][2]; ///< motion vectors of current & prev 2 frames
47 } MEContext;
48 
49 #define OFFSET(x) offsetof(MEContext, x)
50 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
51 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
52 
53 static const AVOption mestimate_options[] = {
54  { "method", "motion estimation method", OFFSET(method), AV_OPT_TYPE_INT, {.i64 = AV_ME_METHOD_ESA}, AV_ME_METHOD_ESA, AV_ME_METHOD_UMH, FLAGS, "method" },
55  CONST("esa", "exhaustive search", AV_ME_METHOD_ESA, "method"),
56  CONST("tss", "three step search", AV_ME_METHOD_TSS, "method"),
57  CONST("tdls", "two dimensional logarithmic search", AV_ME_METHOD_TDLS, "method"),
58  CONST("ntss", "new three step search", AV_ME_METHOD_NTSS, "method"),
59  CONST("fss", "four step search", AV_ME_METHOD_FSS, "method"),
60  CONST("ds", "diamond search", AV_ME_METHOD_DS, "method"),
61  CONST("hexbs", "hexagon-based search", AV_ME_METHOD_HEXBS, "method"),
62  CONST("epzs", "enhanced predictive zonal search", AV_ME_METHOD_EPZS, "method"),
63  CONST("umh", "uneven multi-hexagon search", AV_ME_METHOD_UMH, "method"),
64  { "mb_size", "macroblock size", OFFSET(mb_size), AV_OPT_TYPE_INT, {.i64 = 16}, 8, INT_MAX, FLAGS },
65  { "search_param", "search parameter", OFFSET(search_param), AV_OPT_TYPE_INT, {.i64 = 7}, 4, INT_MAX, FLAGS },
66  { NULL }
67 };
68 
69 AVFILTER_DEFINE_CLASS(mestimate);
70 
72 {
73  static const enum AVPixelFormat pix_fmts[] = {
83  };
84 
85  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
86  if (!fmts_list)
87  return AVERROR(ENOMEM);
88  return ff_set_common_formats(ctx, fmts_list);
89 }
90 
91 static int config_input(AVFilterLink *inlink)
92 {
93  MEContext *s = inlink->dst->priv;
94  int i;
95 
97  s->mb_size = 1 << s->log2_mb_size;
98 
99  s->b_width = inlink->w >> s->log2_mb_size;
100  s->b_height = inlink->h >> s->log2_mb_size;
101  s->b_count = s->b_width * s->b_height;
102 
103  for (i = 0; i < 3; i++) {
104  s->mv_table[i] = av_mallocz_array(s->b_count, sizeof(*s->mv_table[0]));
105  if (!s->mv_table[i])
106  return AVERROR(ENOMEM);
107  }
108 
109  ff_me_init_context(&s->me_ctx, s->mb_size, s->search_param, inlink->w, inlink->h, 0, (s->b_width - 1) << s->log2_mb_size, 0, (s->b_height - 1) << s->log2_mb_size);
110 
111  return 0;
112 }
113 
114 static void add_mv_data(AVMotionVector *mv, int mb_size,
115  int x, int y, int x_mv, int y_mv, int dir)
116 {
117  mv->w = mb_size;
118  mv->h = mb_size;
119  mv->dst_x = x + (mb_size >> 1);
120  mv->dst_y = y + (mb_size >> 1);
121  mv->src_x = x_mv + (mb_size >> 1);
122  mv->src_y = y_mv + (mb_size >> 1);
123  mv->source = dir ? 1 : -1;
124  mv->flags = 0;
125 }
126 
127 #define SEARCH_MV(method)\
128  do {\
129  for (mb_y = 0; mb_y < s->b_height; mb_y++)\
130  for (mb_x = 0; mb_x < s->b_width; mb_x++) {\
131  const int x_mb = mb_x << s->log2_mb_size;\
132  const int y_mb = mb_y << s->log2_mb_size;\
133  int mv[2] = {x_mb, y_mb};\
134  ff_me_search_##method(me_ctx, x_mb, y_mb, mv);\
135  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, me_ctx->mb_size, x_mb, y_mb, mv[0], mv[1], dir);\
136  }\
137  } while (0)
138 
139 #define ADD_PRED(preds, px, py)\
140  do {\
141  preds.mvs[preds.nb][0] = px;\
142  preds.mvs[preds.nb][1] = py;\
143  preds.nb++;\
144  } while(0)
145 
146 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
147 {
148  AVFilterContext *ctx = inlink->dst;
149  MEContext *s = ctx->priv;
150  AVMotionEstContext *me_ctx = &s->me_ctx;
151  AVFrameSideData *sd;
152  AVFrame *out;
153  int mb_x, mb_y, dir;
154  int32_t mv_count = 0;
155  int ret;
156 
157  if (frame->pts == AV_NOPTS_VALUE) {
158  ret = ff_filter_frame(ctx->outputs[0], frame);
159  return ret;
160  }
161 
162  av_frame_free(&s->prev);
163  s->prev = s->cur;
164  s->cur = s->next;
165  s->next = frame;
166 
167  s->mv_table[2] = memcpy(s->mv_table[2], s->mv_table[1], sizeof(*s->mv_table[1]) * s->b_count);
168  s->mv_table[1] = memcpy(s->mv_table[1], s->mv_table[0], sizeof(*s->mv_table[0]) * s->b_count);
169 
170  if (!s->cur) {
171  s->cur = av_frame_clone(frame);
172  if (!s->cur)
173  return AVERROR(ENOMEM);
174  }
175 
176  if (!s->prev)
177  return 0;
178 
179  out = av_frame_clone(s->cur);
180  if (!out)
181  return AVERROR(ENOMEM);
182 
184  if (!sd) {
185  av_frame_free(&out);
186  return AVERROR(ENOMEM);
187  }
188 
189  me_ctx->data_cur = s->cur->data[0];
190  me_ctx->linesize = s->cur->linesize[0];
191 
192  for (dir = 0; dir < 2; dir++) {
193  me_ctx->data_ref = (dir ? s->next : s->prev)->data[0];
194 
195  if (s->method == AV_ME_METHOD_DS)
196  SEARCH_MV(ds);
197  else if (s->method == AV_ME_METHOD_ESA)
198  SEARCH_MV(esa);
199  else if (s->method == AV_ME_METHOD_FSS)
200  SEARCH_MV(fss);
201  else if (s->method == AV_ME_METHOD_NTSS)
202  SEARCH_MV(ntss);
203  else if (s->method == AV_ME_METHOD_TDLS)
204  SEARCH_MV(tdls);
205  else if (s->method == AV_ME_METHOD_TSS)
206  SEARCH_MV(tss);
207  else if (s->method == AV_ME_METHOD_HEXBS)
208  SEARCH_MV(hexbs);
209  else if (s->method == AV_ME_METHOD_UMH) {
210  for (mb_y = 0; mb_y < s->b_height; mb_y++)
211  for (mb_x = 0; mb_x < s->b_width; mb_x++) {
212  const int mb_i = mb_x + mb_y * s->b_width;
213  const int x_mb = mb_x << s->log2_mb_size;
214  const int y_mb = mb_y << s->log2_mb_size;
215  int mv[2] = {x_mb, y_mb};
216 
217  AVMotionEstPredictor *preds = me_ctx->preds;
218  preds[0].nb = 0;
219 
220  ADD_PRED(preds[0], 0, 0);
221 
222  //left mb in current frame
223  if (mb_x > 0)
224  ADD_PRED(preds[0], s->mv_table[0][mb_i - 1][dir][0], s->mv_table[0][mb_i - 1][dir][1]);
225 
226  if (mb_y > 0) {
227  //top mb in current frame
228  ADD_PRED(preds[0], s->mv_table[0][mb_i - s->b_width][dir][0], s->mv_table[0][mb_i - s->b_width][dir][1]);
229 
230  //top-right mb in current frame
231  if (mb_x + 1 < s->b_width)
232  ADD_PRED(preds[0], s->mv_table[0][mb_i - s->b_width + 1][dir][0], s->mv_table[0][mb_i - s->b_width + 1][dir][1]);
233  //top-left mb in current frame
234  else if (mb_x > 0)
235  ADD_PRED(preds[0], s->mv_table[0][mb_i - s->b_width - 1][dir][0], s->mv_table[0][mb_i - s->b_width - 1][dir][1]);
236  }
237 
238  //median predictor
239  if (preds[0].nb == 4) {
240  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
241  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
242  } else if (preds[0].nb == 3) {
243  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
244  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
245  } else if (preds[0].nb == 2) {
246  me_ctx->pred_x = preds[0].mvs[1][0];
247  me_ctx->pred_y = preds[0].mvs[1][1];
248  } else {
249  me_ctx->pred_x = 0;
250  me_ctx->pred_y = 0;
251  }
252 
253  ff_me_search_umh(me_ctx, x_mb, y_mb, mv);
254 
255  s->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
256  s->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
257  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, me_ctx->mb_size, x_mb, y_mb, mv[0], mv[1], dir);
258  }
259 
260  } else if (s->method == AV_ME_METHOD_EPZS) {
261 
262  for (mb_y = 0; mb_y < s->b_height; mb_y++)
263  for (mb_x = 0; mb_x < s->b_width; mb_x++) {
264  const int mb_i = mb_x + mb_y * s->b_width;
265  const int x_mb = mb_x << s->log2_mb_size;
266  const int y_mb = mb_y << s->log2_mb_size;
267  int mv[2] = {x_mb, y_mb};
268 
269  AVMotionEstPredictor *preds = me_ctx->preds;
270  preds[0].nb = 0;
271  preds[1].nb = 0;
272 
273  ADD_PRED(preds[0], 0, 0);
274 
275  //left mb in current frame
276  if (mb_x > 0)
277  ADD_PRED(preds[0], s->mv_table[0][mb_i - 1][dir][0], s->mv_table[0][mb_i - 1][dir][1]);
278 
279  //top mb in current frame
280  if (mb_y > 0)
281  ADD_PRED(preds[0], s->mv_table[0][mb_i - s->b_width][dir][0], s->mv_table[0][mb_i - s->b_width][dir][1]);
282 
283  //top-right mb in current frame
284  if (mb_y > 0 && mb_x + 1 < s->b_width)
285  ADD_PRED(preds[0], s->mv_table[0][mb_i - s->b_width + 1][dir][0], s->mv_table[0][mb_i - s->b_width + 1][dir][1]);
286 
287  //median predictor
288  if (preds[0].nb == 4) {
289  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
290  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
291  } else if (preds[0].nb == 3) {
292  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
293  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
294  } else if (preds[0].nb == 2) {
295  me_ctx->pred_x = preds[0].mvs[1][0];
296  me_ctx->pred_y = preds[0].mvs[1][1];
297  } else {
298  me_ctx->pred_x = 0;
299  me_ctx->pred_y = 0;
300  }
301 
302  //collocated mb in prev frame
303  ADD_PRED(preds[0], s->mv_table[1][mb_i][dir][0], s->mv_table[1][mb_i][dir][1]);
304 
305  //accelerator motion vector of collocated block in prev frame
306  ADD_PRED(preds[1], s->mv_table[1][mb_i][dir][0] + (s->mv_table[1][mb_i][dir][0] - s->mv_table[2][mb_i][dir][0]),
307  s->mv_table[1][mb_i][dir][1] + (s->mv_table[1][mb_i][dir][1] - s->mv_table[2][mb_i][dir][1]));
308 
309  //left mb in prev frame
310  if (mb_x > 0)
311  ADD_PRED(preds[1], s->mv_table[1][mb_i - 1][dir][0], s->mv_table[1][mb_i - 1][dir][1]);
312 
313  //top mb in prev frame
314  if (mb_y > 0)
315  ADD_PRED(preds[1], s->mv_table[1][mb_i - s->b_width][dir][0], s->mv_table[1][mb_i - s->b_width][dir][1]);
316 
317  //right mb in prev frame
318  if (mb_x + 1 < s->b_width)
319  ADD_PRED(preds[1], s->mv_table[1][mb_i + 1][dir][0], s->mv_table[1][mb_i + 1][dir][1]);
320 
321  //bottom mb in prev frame
322  if (mb_y + 1 < s->b_height)
323  ADD_PRED(preds[1], s->mv_table[1][mb_i + s->b_width][dir][0], s->mv_table[1][mb_i + s->b_width][dir][1]);
324 
325  ff_me_search_epzs(me_ctx, x_mb, y_mb, mv);
326 
327  s->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
328  s->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
329  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, s->mb_size, x_mb, y_mb, mv[0], mv[1], dir);
330  }
331  }
332  }
333 
334  return ff_filter_frame(ctx->outputs[0], out);
335 }
336 
338 {
339  MEContext *s = ctx->priv;
340  int i;
341 
342  av_frame_free(&s->prev);
343  av_frame_free(&s->cur);
344  av_frame_free(&s->next);
345 
346  for (i = 0; i < 3; i++)
347  av_freep(&s->mv_table[i]);
348 }
349 
350 static const AVFilterPad mestimate_inputs[] = {
351  {
352  .name = "default",
353  .type = AVMEDIA_TYPE_VIDEO,
354  .filter_frame = filter_frame,
355  .config_props = config_input,
356  },
357  { NULL }
358 };
359 
360 static const AVFilterPad mestimate_outputs[] = {
361  {
362  .name = "default",
363  .type = AVMEDIA_TYPE_VIDEO,
364  },
365  { NULL }
366 };
367 
369  .name = "mestimate",
370  .description = NULL_IF_CONFIG_SMALL("Generate motion vectors."),
371  .priv_size = sizeof(MEContext),
372  .priv_class = &mestimate_class,
373  .uninit = uninit,
375  .inputs = mestimate_inputs,
376  .outputs = mestimate_outputs,
377 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
AVFrame * cur
Definition: vf_mestimate.c:44
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
int16_t src_x
Absolute source position.
Definition: motion_vector.h:38
Main libavfilter public API header.
int pred_y
median predictor y
static int config_input(AVFilterLink *inlink)
Definition: vf_mestimate.c:91
#define AV_ME_METHOD_TDLS
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com>
Definition: vf_mestimate.c:34
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
AVMotionEstPredictor preds[2]
const char * name
Pad name.
Definition: internal.h:60
static void add_mv_data(AVMotionVector *mv, int mb_size, int x, int y, int x_mv, int y_mv, int dir)
Definition: vf_mestimate.c:114
#define AV_ME_METHOD_DS
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:97
#define AV_ME_METHOD_NTSS
#define av_cold
Definition: attributes.h:82
AVOptions.
int pred_x
median predictor x
int16_t dst_x
Absolute destination position.
Definition: motion_vector.h:42
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:311
#define AV_ME_METHOD_EPZS
uint64_t ff_me_search_umh(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
static AVFrame * frame
Structure to hold side data for an AVFrame.
Definition: frame.h:180
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:96
int32_t source
Where the current macroblock comes from; negative value when it comes from the past, positive value when it comes from the future.
Definition: motion_vector.h:30
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
AVFILTER_DEFINE_CLASS(mestimate)
#define CONST(name, help, val, unit)
Definition: vf_mestimate.c:51
#define AV_ME_METHOD_HEXBS
A filter pad used for either input or output.
Definition: internal.h:54
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:172
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:568
int mb_size
macroblock size
Definition: vf_mestimate.c:39
#define AVERROR(e)
Definition: error.h:43
#define SEARCH_MV(method)
Definition: vf_mestimate.c:127
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
uint8_t w
Width and height of the block.
Definition: motion_vector.h:34
void * priv
private data for use by the filter
Definition: avfilter.h:353
uint64_t ff_me_search_epzs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
simple assert() macros that are a bit more flexible than ISO C assert().
#define OFFSET(x)
Definition: vf_mestimate.c:49
int search_param
search parameter
Definition: vf_mestimate.c:40
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
static const AVFilterPad mestimate_inputs[]
Definition: vf_mestimate.c:350
AVFrame * prev
Definition: vf_mestimate.c:44
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
Motion vectors exported by some codecs (on demand through the export_mvs flag set in the libavcodec A...
Definition: frame.h:96
int(*[3] mv_table)[2][2]
motion vectors of current & prev 2 frames
Definition: vf_mestimate.c:46
#define AV_ME_METHOD_UMH
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
#define AV_ME_METHOD_TSS
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:538
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static const int8_t mv[256][2]
Definition: 4xm.c:77
#define ADD_PRED(preds, px, py)
Definition: vf_mestimate.c:139
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)
int method
motion estimation method
Definition: vf_mestimate.c:37
static const AVOption mestimate_options[]
Definition: vf_mestimate.c:53
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:173
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_mestimate.c:337
uint8_t * data
Definition: frame.h:182
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
AVFrame * next
Definition: vf_mestimate.c:44
Filter definition.
Definition: avfilter.h:144
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:720
#define mid_pred
Definition: mathops.h:97
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_ME_METHOD_FSS
int b_height
Definition: vf_mestimate.c:41
#define FLAGS
Definition: vf_mestimate.c:50
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
uint64_t flags
Extra flag information.
Definition: motion_vector.h:47
common internal and external API header
AVMotionEstContext me_ctx
Definition: vf_mestimate.c:36
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
#define AV_ME_METHOD_ESA
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com>
AVFilter ff_vf_mestimate
Definition: vf_mestimate.c:368
static int query_formats(AVFilterContext *ctx)
Definition: vf_mestimate.c:71
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:254
An instance of a filter.
Definition: avfilter.h:338
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_mestimate.c:146
FILE * out
Definition: movenc.c:54
int log2_mb_size
Definition: vf_mestimate.c:42
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:95
static const AVFilterPad mestimate_outputs[]
Definition: vf_mestimate.c:360
static av_always_inline av_const int av_ceil_log2_c(int x)
Compute ceil(log2(x)).
Definition: common.h:332
internal API functions
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191