FFmpeg
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/common.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/motion_vector.h"
27 #include "avfilter.h"
28 #include "filters.h"
29 #include "video.h"
30 
31 typedef struct MEContext {
32  const AVClass *class;
33  AVMotionEstContext me_ctx;
34  int method; ///< motion estimation method
35 
36  int mb_size; ///< macroblock size
37  int search_param; ///< search parameter
38  int b_width, b_height, b_count;
39  int log2_mb_size;
40 
41  AVFrame *prev, *cur, *next;
42 
43  int (*mv_table[3])[2][2]; ///< motion vectors of current & prev 2 frames
44 } MEContext;
45 
46 #define OFFSET(x) offsetof(MEContext, x)
47 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
48 #define CONST(name, help, val, u) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, .unit = u }
49 
50 static const AVOption mestimate_options[] = {
51  { "method", "motion estimation method", OFFSET(method), AV_OPT_TYPE_INT, {.i64 = AV_ME_METHOD_ESA}, AV_ME_METHOD_ESA, AV_ME_METHOD_UMH, FLAGS, .unit = "method" },
52  CONST("esa", "exhaustive search", AV_ME_METHOD_ESA, "method"),
53  CONST("tss", "three step search", AV_ME_METHOD_TSS, "method"),
54  CONST("tdls", "two dimensional logarithmic search", AV_ME_METHOD_TDLS, "method"),
55  CONST("ntss", "new three step search", AV_ME_METHOD_NTSS, "method"),
56  CONST("fss", "four step search", AV_ME_METHOD_FSS, "method"),
57  CONST("ds", "diamond search", AV_ME_METHOD_DS, "method"),
58  CONST("hexbs", "hexagon-based search", AV_ME_METHOD_HEXBS, "method"),
59  CONST("epzs", "enhanced predictive zonal search", AV_ME_METHOD_EPZS, "method"),
60  CONST("umh", "uneven multi-hexagon search", AV_ME_METHOD_UMH, "method"),
61  { "mb_size", "macroblock size", OFFSET(mb_size), AV_OPT_TYPE_INT, {.i64 = 16}, 8, INT_MAX, FLAGS },
62  { "search_param", "search parameter", OFFSET(search_param), AV_OPT_TYPE_INT, {.i64 = 7}, 4, INT_MAX, FLAGS },
63  { NULL }
64 };
65 
66 AVFILTER_DEFINE_CLASS(mestimate);
67 
68 static const enum AVPixelFormat pix_fmts[] = {
69  AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
70  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
71  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
72  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
73  AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
74  AV_PIX_FMT_YUVJ411P,
75  AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
76  AV_PIX_FMT_GRAY8,
77  AV_PIX_FMT_NONE
78 };
79 
80 static int config_input(AVFilterLink *inlink)
81 {
82  MEContext *s = inlink->dst->priv;
83  int i;
84 
85  s->log2_mb_size = av_ceil_log2_c(s->mb_size);
86  s->mb_size = 1 << s->log2_mb_size;
87 
88  s->b_width = inlink->w >> s->log2_mb_size;
89  s->b_height = inlink->h >> s->log2_mb_size;
90  s->b_count = s->b_width * s->b_height;
91 
92  if (s->b_count == 0)
93  return AVERROR(EINVAL);
94 
95  for (i = 0; i < 3; i++) {
96  s->mv_table[i] = av_calloc(s->b_count, sizeof(*s->mv_table[0]));
97  if (!s->mv_table[i])
98  return AVERROR(ENOMEM);
99  }
100 
101  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);
102 
103  return 0;
104 }
105 
106 static void add_mv_data(AVMotionVector *mv, int mb_size,
107  int x, int y, int x_mv, int y_mv, int dir)
108 {
109  mv->w = mb_size;
110  mv->h = mb_size;
111  mv->dst_x = x + (mb_size >> 1);
112  mv->dst_y = y + (mb_size >> 1);
113  mv->src_x = x_mv + (mb_size >> 1);
114  mv->src_y = y_mv + (mb_size >> 1);
115  mv->source = dir ? 1 : -1;
116  mv->flags = 0;
117 }
118 
119 #define SEARCH_MV(method)\
120  do {\
121  for (mb_y = 0; mb_y < s->b_height; mb_y++)\
122  for (mb_x = 0; mb_x < s->b_width; mb_x++) {\
123  const int x_mb = mb_x << s->log2_mb_size;\
124  const int y_mb = mb_y << s->log2_mb_size;\
125  int mv[2] = {x_mb, y_mb};\
126  ff_me_search_##method(me_ctx, x_mb, y_mb, mv);\
127  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, me_ctx->mb_size, x_mb, y_mb, mv[0], mv[1], dir);\
128  }\
129  } while (0)
130 
131 #define ADD_PRED(preds, px, py)\
132  do {\
133  preds.mvs[preds.nb][0] = px;\
134  preds.mvs[preds.nb][1] = py;\
135  preds.nb++;\
136  } while(0)
137 
138 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
139 {
140  AVFilterContext *ctx = inlink->dst;
141  MEContext *s = ctx->priv;
142  AVMotionEstContext *me_ctx = &s->me_ctx;
143  AVFrameSideData *sd;
144  AVFrame *out;
145  int mb_x, mb_y, dir;
146  int32_t mv_count = 0;
147  int ret;
148 
149  if (frame->pts == AV_NOPTS_VALUE) {
150  ret = ff_filter_frame(ctx->outputs[0], frame);
151  return ret;
152  }
153 
154  av_frame_free(&s->prev);
155  s->prev = s->cur;
156  s->cur = s->next;
157  s->next = frame;
158 
159  s->mv_table[2] = memcpy(s->mv_table[2], s->mv_table[1], sizeof(*s->mv_table[1]) * s->b_count);
160  s->mv_table[1] = memcpy(s->mv_table[1], s->mv_table[0], sizeof(*s->mv_table[0]) * s->b_count);
161 
162  if (!s->cur) {
163  s->cur = av_frame_clone(frame);
164  if (!s->cur)
165  return AVERROR(ENOMEM);
166  }
167 
168  if (!s->prev)
169  return 0;
170 
171  out = av_frame_clone(s->cur);
172  if (!out)
173  return AVERROR(ENOMEM);
174 
175  sd = av_frame_new_side_data(out, AV_FRAME_DATA_MOTION_VECTORS, 2 * s->b_count * sizeof(AVMotionVector));
176  if (!sd) {
177  av_frame_free(&out);
178  return AVERROR(ENOMEM);
179  }
180 
181  me_ctx->data_cur = s->cur->data[0];
182  me_ctx->linesize = s->cur->linesize[0];
183 
184  for (dir = 0; dir < 2; dir++) {
185  me_ctx->data_ref = (dir ? s->next : s->prev)->data[0];
186 
187  if (s->method == AV_ME_METHOD_DS)
188  SEARCH_MV(ds);
189  else if (s->method == AV_ME_METHOD_ESA)
190  SEARCH_MV(esa);
191  else if (s->method == AV_ME_METHOD_FSS)
192  SEARCH_MV(fss);
193  else if (s->method == AV_ME_METHOD_NTSS)
194  SEARCH_MV(ntss);
195  else if (s->method == AV_ME_METHOD_TDLS)
196  SEARCH_MV(tdls);
197  else if (s->method == AV_ME_METHOD_TSS)
198  SEARCH_MV(tss);
199  else if (s->method == AV_ME_METHOD_HEXBS)
200  SEARCH_MV(hexbs);
201  else if (s->method == AV_ME_METHOD_UMH) {
202  for (mb_y = 0; mb_y < s->b_height; mb_y++)
203  for (mb_x = 0; mb_x < s->b_width; mb_x++) {
204  const int mb_i = mb_x + mb_y * s->b_width;
205  const int x_mb = mb_x << s->log2_mb_size;
206  const int y_mb = mb_y << s->log2_mb_size;
207  int mv[2] = {x_mb, y_mb};
208 
209  AVMotionEstPredictor *preds = me_ctx->preds;
210  preds[0].nb = 0;
211 
212  ADD_PRED(preds[0], 0, 0);
213 
214  //left mb in current frame
215  if (mb_x > 0)
216  ADD_PRED(preds[0], s->mv_table[0][mb_i - 1][dir][0], s->mv_table[0][mb_i - 1][dir][1]);
217 
218  if (mb_y > 0) {
219  //top mb in current frame
220  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]);
221 
222  //top-right mb in current frame
223  if (mb_x + 1 < s->b_width)
224  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]);
225  //top-left mb in current frame
226  else if (mb_x > 0)
227  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]);
228  }
229 
230  //median predictor
231  if (preds[0].nb == 4) {
232  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
233  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
234  } else if (preds[0].nb == 3) {
235  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
236  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
237  } else if (preds[0].nb == 2) {
238  me_ctx->pred_x = preds[0].mvs[1][0];
239  me_ctx->pred_y = preds[0].mvs[1][1];
240  } else {
241  me_ctx->pred_x = 0;
242  me_ctx->pred_y = 0;
243  }
244 
245  ff_me_search_umh(me_ctx, x_mb, y_mb, mv);
246 
247  s->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
248  s->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
249  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, me_ctx->mb_size, x_mb, y_mb, mv[0], mv[1], dir);
250  }
251 
252  } else if (s->method == AV_ME_METHOD_EPZS) {
253 
254  for (mb_y = 0; mb_y < s->b_height; mb_y++)
255  for (mb_x = 0; mb_x < s->b_width; mb_x++) {
256  const int mb_i = mb_x + mb_y * s->b_width;
257  const int x_mb = mb_x << s->log2_mb_size;
258  const int y_mb = mb_y << s->log2_mb_size;
259  int mv[2] = {x_mb, y_mb};
260 
261  AVMotionEstPredictor *preds = me_ctx->preds;
262  preds[0].nb = 0;
263  preds[1].nb = 0;
264 
265  ADD_PRED(preds[0], 0, 0);
266 
267  //left mb in current frame
268  if (mb_x > 0)
269  ADD_PRED(preds[0], s->mv_table[0][mb_i - 1][dir][0], s->mv_table[0][mb_i - 1][dir][1]);
270 
271  //top mb in current frame
272  if (mb_y > 0)
273  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]);
274 
275  //top-right mb in current frame
276  if (mb_y > 0 && mb_x + 1 < s->b_width)
277  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]);
278 
279  //median predictor
280  if (preds[0].nb == 4) {
281  me_ctx->pred_x = mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
282  me_ctx->pred_y = mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
283  } else if (preds[0].nb == 3) {
284  me_ctx->pred_x = mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
285  me_ctx->pred_y = mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
286  } else if (preds[0].nb == 2) {
287  me_ctx->pred_x = preds[0].mvs[1][0];
288  me_ctx->pred_y = preds[0].mvs[1][1];
289  } else {
290  me_ctx->pred_x = 0;
291  me_ctx->pred_y = 0;
292  }
293 
294  //collocated mb in prev frame
295  ADD_PRED(preds[0], s->mv_table[1][mb_i][dir][0], s->mv_table[1][mb_i][dir][1]);
296 
297  //accelerator motion vector of collocated block in prev frame
298  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]),
299  s->mv_table[1][mb_i][dir][1] + (s->mv_table[1][mb_i][dir][1] - s->mv_table[2][mb_i][dir][1]));
300 
301  //left mb in prev frame
302  if (mb_x > 0)
303  ADD_PRED(preds[1], s->mv_table[1][mb_i - 1][dir][0], s->mv_table[1][mb_i - 1][dir][1]);
304 
305  //top mb in prev frame
306  if (mb_y > 0)
307  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]);
308 
309  //right mb in prev frame
310  if (mb_x + 1 < s->b_width)
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  //bottom mb in prev frame
314  if (mb_y + 1 < s->b_height)
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  ff_me_search_epzs(me_ctx, x_mb, y_mb, mv);
318 
319  s->mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
320  s->mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
321  add_mv_data(((AVMotionVector *) sd->data) + mv_count++, s->mb_size, x_mb, y_mb, mv[0], mv[1], dir);
322  }
323  }
324  }
325 
326  return ff_filter_frame(ctx->outputs[0], out);
327 }
328 
329 static av_cold void uninit(AVFilterContext *ctx)
330 {
331  MEContext *s = ctx->priv;
332  int i;
333 
334  av_frame_free(&s->prev);
335  av_frame_free(&s->cur);
336  av_frame_free(&s->next);
337 
338  for (i = 0; i < 3; i++)
339  av_freep(&s->mv_table[i]);
340 }
341 
342 static const AVFilterPad mestimate_inputs[] = {
343  {
344  .name = "default",
345  .type = AVMEDIA_TYPE_VIDEO,
346  .filter_frame = filter_frame,
347  .config_props = config_input,
348  },
349 };
350 
351 const AVFilter ff_vf_mestimate = {
352  .name = "mestimate",
353  .description = NULL_IF_CONFIG_SMALL("Generate motion vectors."),
354  .priv_size = sizeof(MEContext),
355  .priv_class = &mestimate_class,
356  .uninit = uninit,
357  .flags = AVFILTER_FLAG_METADATA_ONLY,
358  FILTER_INPUTS(mestimate_inputs),
359  FILTER_OUTPUTS(ff_video_default_filterpad),
360  FILTER_PIXFMTS_ARRAY(pix_fmts),
361 };
AVMotionEstPredictor::nb
int nb
Definition: motion_estimation.h:38
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
AVMotionEstContext::data_ref
uint8_t * data_ref
Definition: motion_estimation.h:42
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
AVMotionEstPredictor
Definition: motion_estimation.h:36
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
out
FILE * out
Definition: movenc.c:55
av_frame_new_side_data
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, size_t size)
Add a new side data to a frame.
Definition: frame.c:799
AVMotionVector
Definition: motion_vector.h:24
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1062
MEContext::mv_table
int(*[3] mv_table)[2][2]
motion vectors of current & prev 2 frames
Definition: vf_mestimate.c:43
mv
static const int8_t mv[256][2]
Definition: 4xm.c:81
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
MEContext::b_height
int b_height
Definition: vf_mestimate.c:38
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:162
AVMotionEstContext::data_cur
uint8_t * data_cur
Definition: motion_estimation.h:42
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
AVOption
AVOption.
Definition: opt.h:429
MEContext::next
AVFrame * next
Definition: vf_mestimate.c:41
data
const char data[16]
Definition: mxf.c:149
MEContext::prev
AVFrame * prev
Definition: vf_mestimate.c:41
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:205
add_mv_data
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:106
MEContext::me_ctx
AVMotionEstContext me_ctx
Definition: vf_mestimate.c:33
MEContext::method
int method
motion estimation method
Definition: vf_mestimate.c:34
video.h
MEContext
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
Definition: vf_mestimate.c:31
AV_ME_METHOD_FSS
#define AV_ME_METHOD_FSS
Definition: motion_estimation.h:30
AVMotionEstContext::pred_x
int pred_x
median predictor x
Definition: motion_estimation.h:56
SEARCH_MV
#define SEARCH_MV(method)
Definition: vf_mestimate.c:119
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_mestimate.c:80
AV_ME_METHOD_ESA
#define AV_ME_METHOD_ESA
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
Definition: motion_estimation.h:26
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
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:283
av_cold
#define av_cold
Definition: attributes.h:90
ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition: video.c:37
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:86
motion_vector.h
AV_ME_METHOD_TSS
#define AV_ME_METHOD_TSS
Definition: motion_estimation.h:27
s
#define s(width, name)
Definition: cbs_vp9.c:198
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:108
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(mestimate)
filters.h
ctx
AVFormatContext * ctx
Definition: movenc.c:49
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:597
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:73
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
AVMotionEstContext
Definition: motion_estimation.h:41
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:87
mestimate_inputs
static const AVFilterPad mestimate_inputs[]
Definition: vf_mestimate.c:342
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:75
NULL
#define NULL
Definition: coverity.c:32
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:85
ADD_PRED
#define ADD_PRED(preds, px, py)
Definition: vf_mestimate.c:131
motion_estimation.h
mathops.h
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
OFFSET
#define OFFSET(x)
Definition: vf_mestimate.c:46
ff_vf_mestimate
const AVFilter ff_vf_mestimate
Definition: vf_mestimate.c:351
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:94
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:333
MEContext::log2_mb_size
int log2_mb_size
Definition: vf_mestimate.c:39
mestimate_options
static const AVOption mestimate_options[]
Definition: vf_mestimate.c:50
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVFrameSideData::data
uint8_t * data
Definition: frame.h:267
MEContext::b_width
int b_width
Definition: vf_mestimate.c:38
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:174
AV_ME_METHOD_EPZS
#define AV_ME_METHOD_EPZS
Definition: motion_estimation.h:33
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_mestimate.c:68
MEContext::cur
AVFrame * cur
Definition: vf_mestimate.c:41
AV_ME_METHOD_DS
#define AV_ME_METHOD_DS
Definition: motion_estimation.h:31
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AV_ME_METHOD_HEXBS
#define AV_ME_METHOD_HEXBS
Definition: motion_estimation.h:32
common.h
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:44
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:264
AVFilter
Filter definition.
Definition: avfilter.h:201
mid_pred
#define mid_pred
Definition: mathops.h:96
ret
ret
Definition: filter_design.txt:187
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
FLAGS
#define FLAGS
Definition: vf_mestimate.c:47
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:46
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_mestimate.c:329
MEContext::search_param
int search_param
search parameter
Definition: vf_mestimate.c:37
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
avfilter.h
MEContext::b_count
int b_count
Definition: vf_mestimate.c:38
AVFILTER_FLAG_METADATA_ONLY
#define AVFILTER_FLAG_METADATA_ONLY
The filter is a "metadata" filter - it does not modify the frame data in any way.
Definition: avfilter.h:168
AV_ME_METHOD_UMH
#define AV_ME_METHOD_UMH
Definition: motion_estimation.h:34
MEContext::mb_size
int mb_size
macroblock size
Definition: vf_mestimate.c:36
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:78
AVFilterContext
An instance of a filter.
Definition: avfilter.h:457
AVMotionEstContext::pred_y
int pred_y
median predictor y
Definition: motion_estimation.h:57
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:77
mem.h
AV_ME_METHOD_NTSS
#define AV_ME_METHOD_NTSS
Definition: motion_estimation.h:29
AVMotionEstContext::linesize
int linesize
Definition: motion_estimation.h:43
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:265
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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:80
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:482
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:79
AV_FRAME_DATA_MOTION_VECTORS
@ AV_FRAME_DATA_MOTION_VECTORS
Motion vectors exported by some codecs (on demand through the export_mvs flag set in the libavcodec A...
Definition: frame.h:97
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:374
AVMotionEstPredictor::mvs
int mvs[10][2]
Definition: motion_estimation.h:37
AV_ME_METHOD_TDLS
#define AV_ME_METHOD_TDLS
Definition: motion_estimation.h:28
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_mestimate.c:138
AVMotionEstContext::preds
AVMotionEstPredictor preds[2]
Definition: motion_estimation.h:58
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:173
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:436
CONST
#define CONST(name, help, val, u)
Definition: vf_mestimate.c:48
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