FFmpeg
vf_identity.c
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1 /*
2  * Copyright (c) 2021 Paul B Mahol
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 /**
22  * @file
23  * Calculate the Identity between two input videos.
24  */
25 
26 #include "config_components.h"
27 
28 #include "libavutil/avstring.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/pixdesc.h"
31 #include "avfilter.h"
32 #include "drawutils.h"
33 #include "formats.h"
34 #include "framesync.h"
35 #include "internal.h"
36 #include "video.h"
37 #include "scene_sad.h"
38 
39 typedef struct IdentityContext {
40  const AVClass *class;
43  uint64_t nb_frames;
44  int is_rgb;
45  int is_msad;
46  uint8_t rgba_map[4];
47  int max[4];
48  char comps[4];
51  int planewidth[4];
52  int planeheight[4];
53  uint64_t **scores;
54  unsigned (*filter_line)(const uint8_t *buf, const uint8_t *ref, int w);
56  int jobnr, int nb_jobs);
59 
60 #define OFFSET(x) offsetof(IdentityContext, x)
61 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
62 
63 static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
64 {
65  unsigned score = 0;
66 
67  for (int j = 0; j < outw; j++)
68  score += main_line[j] == ref_line[j];
69 
70  return score;
71 }
72 
73 static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
74 {
75  const uint16_t *main_line = (const uint16_t *)mmain_line;
76  const uint16_t *ref_line = (const uint16_t *)rref_line;
77  unsigned score = 0;
78 
79  for (int j = 0; j < outw; j++)
80  score += main_line[j] == ref_line[j];
81 
82  return score;
83 }
84 
85 typedef struct ThreadData {
86  const uint8_t *main_data[4];
87  const uint8_t *ref_data[4];
88  int main_linesize[4];
89  int ref_linesize[4];
90  int planewidth[4];
91  int planeheight[4];
92  uint64_t **score;
94 } ThreadData;
95 
96 static
98  int jobnr, int nb_jobs)
99 {
100  IdentityContext *s = ctx->priv;
101  ThreadData *td = arg;
102  uint64_t *score = td->score[jobnr];
103 
104  for (int c = 0; c < td->nb_components; c++) {
105  const int outw = td->planewidth[c];
106  const int outh = td->planeheight[c];
107  const int slice_start = (outh * jobnr) / nb_jobs;
108  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
109  const int ref_linesize = td->ref_linesize[c];
110  const int main_linesize = td->main_linesize[c];
111  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
112  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
113  uint64_t m = 0;
114 
115  s->sad(main_line, main_linesize, ref_line, ref_linesize,
116  outw, slice_end - slice_start, &m);
117 
118  score[c] = m;
119  }
120 
121  return 0;
122 }
123 
124 static
126  int jobnr, int nb_jobs)
127 {
128  IdentityContext *s = ctx->priv;
129  ThreadData *td = arg;
130  uint64_t *score = td->score[jobnr];
131 
132  for (int c = 0; c < td->nb_components; c++) {
133  const int outw = td->planewidth[c];
134  const int outh = td->planeheight[c];
135  const int slice_start = (outh * jobnr) / nb_jobs;
136  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
137  const int ref_linesize = td->ref_linesize[c];
138  const int main_linesize = td->main_linesize[c];
139  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
140  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
141  uint64_t m = 0;
142 
143  for (int i = slice_start; i < slice_end; i++) {
144  m += s->filter_line(main_line, ref_line, outw);
145  ref_line += ref_linesize;
146  main_line += main_linesize;
147  }
148  score[c] = m;
149  }
150 
151  return 0;
152 }
153 
155  AVDictionary **metadata, const char *key, char comp, float d)
156 {
157  char value[128];
158  snprintf(value, sizeof(value), "%f", d);
159  if (comp) {
160  char key2[128];
161  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s%c",
162  ctx->filter->name, ctx->filter->name, key, comp);
163  av_dict_set(metadata, key2, value, 0);
164  } else {
165  char key2[128];
166  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s",
167  ctx->filter->name, ctx->filter->name, key);
168  av_dict_set(metadata, key2, value, 0);
169  }
170 }
171 
173 {
174  AVFilterContext *ctx = fs->parent;
175  IdentityContext *s = ctx->priv;
176  AVFrame *master, *ref;
177  double comp_score[4], score = 0.;
178  uint64_t comp_sum[4] = { 0 };
179  AVDictionary **metadata;
180  ThreadData td;
181  int ret;
182 
184  if (ret < 0)
185  return ret;
186  if (ctx->is_disabled || !ref)
187  return ff_filter_frame(ctx->outputs[0], master);
188  metadata = &master->metadata;
189 
190  td.nb_components = s->nb_components;
191  td.score = s->scores;
192  for (int c = 0; c < s->nb_components; c++) {
193  td.main_data[c] = master->data[c];
194  td.ref_data[c] = ref->data[c];
195  td.main_linesize[c] = master->linesize[c];
196  td.ref_linesize[c] = ref->linesize[c];
197  td.planewidth[c] = s->planewidth[c];
198  td.planeheight[c] = s->planeheight[c];
199  }
200 
201  ff_filter_execute(ctx, s->filter_slice, &td, NULL,
202  FFMIN(s->planeheight[1], s->nb_threads));
203 
204  for (int j = 0; j < s->nb_threads; j++) {
205  for (int c = 0; c < s->nb_components; c++)
206  comp_sum[c] += s->scores[j][c];
207  }
208 
209  for (int c = 0; c < s->nb_components; c++)
210  comp_score[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
211 
212  for (int c = 0; c < s->nb_components && s->is_msad; c++)
213  comp_score[c] /= (double)s->max[c];
214 
215  for (int c = 0; c < s->nb_components; c++)
216  score += comp_score[c];
217  score /= s->nb_components;
218 
219  s->min_score = FFMIN(s->min_score, score);
220  s->max_score = FFMAX(s->max_score, score);
221 
222  s->score += score;
223 
224  for (int j = 0; j < s->nb_components; j++)
225  s->score_comp[j] += comp_score[j];
226  s->nb_frames++;
227 
228  for (int j = 0; j < s->nb_components; j++) {
229  int c = s->is_rgb ? s->rgba_map[j] : j;
230  set_meta(ctx, metadata, ".", s->comps[j], comp_score[c]);
231  }
232  set_meta(ctx, metadata, "_avg", 0, score);
233 
234  return ff_filter_frame(ctx->outputs[0], master);
235 }
236 
238 {
239  IdentityContext *s = ctx->priv;
240 
241  s->fs.on_event = do_identity;
242 
243  return 0;
244 }
245 
246 static const enum AVPixelFormat pix_fmts[] = {
248 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
249 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
250 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
251  PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
259 };
260 
262 {
264  AVFilterContext *ctx = inlink->dst;
265  IdentityContext *s = ctx->priv;
266 
267  s->nb_threads = ff_filter_get_nb_threads(ctx);
268  s->nb_components = desc->nb_components;
269  if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
270  ctx->inputs[0]->h != ctx->inputs[1]->h) {
271  av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
272  return AVERROR(EINVAL);
273  }
274 
275  s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
276  s->comps[0] = s->is_rgb ? 'R' : 'Y' ;
277  s->comps[1] = s->is_rgb ? 'G' : 'U' ;
278  s->comps[2] = s->is_rgb ? 'B' : 'V' ;
279  s->comps[3] = 'A';
280 
281  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
282  s->planeheight[0] = s->planeheight[3] = inlink->h;
283  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
284  s->planewidth[0] = s->planewidth[3] = inlink->w;
285 
286  s->scores = av_calloc(s->nb_threads, sizeof(*s->scores));
287  if (!s->scores)
288  return AVERROR(ENOMEM);
289 
290  for (int t = 0; t < s->nb_threads; t++) {
291  s->scores[t] = av_calloc(s->nb_components, sizeof(*s->scores[0]));
292  if (!s->scores[t])
293  return AVERROR(ENOMEM);
294  }
295 
296  s->min_score = +INFINITY;
297  s->max_score = -INFINITY;
298 
299  s->max[0] = (1 << desc->comp[0].depth) - 1;
300  s->max[1] = (1 << desc->comp[1].depth) - 1;
301  s->max[2] = (1 << desc->comp[2].depth) - 1;
302  s->max[3] = (1 << desc->comp[3].depth) - 1;
303 
304  s->is_msad = !strcmp(ctx->filter->name, "msad");
305  s->filter_slice = !s->is_msad ? compute_images_identity : compute_images_msad;
306  s->filter_line = desc->comp[0].depth > 8 ? identity_line_16bit : identity_line_8bit;
307 
308  s->sad = ff_scene_sad_get_fn(desc->comp[0].depth <= 8 ? 8 : 16);
309  if (!s->sad)
310  return AVERROR(EINVAL);
311 
312  return 0;
313 }
314 
315 static int config_output(AVFilterLink *outlink)
316 {
317  AVFilterContext *ctx = outlink->src;
318  IdentityContext *s = ctx->priv;
319  AVFilterLink *mainlink = ctx->inputs[0];
320  int ret;
321 
323  if (ret < 0)
324  return ret;
325  outlink->w = mainlink->w;
326  outlink->h = mainlink->h;
327  outlink->time_base = mainlink->time_base;
328  outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
329  outlink->frame_rate = mainlink->frame_rate;
330  if ((ret = ff_framesync_configure(&s->fs)) < 0)
331  return ret;
332 
333  outlink->time_base = s->fs.time_base;
334 
335  if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
336  av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
337  av_log(ctx, AV_LOG_WARNING, "not matching timebases found between first input: %d/%d and second input %d/%d, results may be incorrect!\n",
338  mainlink->time_base.num, mainlink->time_base.den,
339  ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
340 
341  return 0;
342 }
343 
345 {
346  IdentityContext *s = ctx->priv;
347  return ff_framesync_activate(&s->fs);
348 }
349 
351 {
352  IdentityContext *s = ctx->priv;
353 
354  if (s->nb_frames > 0) {
355  char buf[256];
356 
357  buf[0] = 0;
358  for (int j = 0; j < s->nb_components; j++) {
359  int c = s->is_rgb ? s->rgba_map[j] : j;
360  av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], s->score_comp[c] / s->nb_frames);
361  }
362 
363  av_log(ctx, AV_LOG_INFO, "%s%s average:%f min:%f max:%f\n",
364  ctx->filter->name,
365  buf,
366  s->score / s->nb_frames,
367  s->min_score,
368  s->max_score);
369  }
370 
371  ff_framesync_uninit(&s->fs);
372  for (int t = 0; t < s->nb_threads && s->scores; t++)
373  av_freep(&s->scores[t]);
374  av_freep(&s->scores);
375 }
376 
377 static const AVFilterPad identity_inputs[] = {
378  {
379  .name = "main",
380  .type = AVMEDIA_TYPE_VIDEO,
381  },{
382  .name = "reference",
383  .type = AVMEDIA_TYPE_VIDEO,
384  .config_props = config_input_ref,
385  },
386 };
387 
388 static const AVFilterPad identity_outputs[] = {
389  {
390  .name = "default",
391  .type = AVMEDIA_TYPE_VIDEO,
392  .config_props = config_output,
393  },
394 };
395 
396 static const AVOption options[] = {
397  { NULL }
398 };
399 
400 #if CONFIG_IDENTITY_FILTER
401 
402 #define identity_options options
404 
405 const AVFilter ff_vf_identity = {
406  .name = "identity",
407  .description = NULL_IF_CONFIG_SMALL("Calculate the Identity between two video streams."),
408  .preinit = identity_framesync_preinit,
409  .init = init,
410  .uninit = uninit,
411  .activate = activate,
412  .priv_size = sizeof(IdentityContext),
413  .priv_class = &identity_class,
420 };
421 
422 #endif /* CONFIG_IDENTITY_FILTER */
423 
424 #if CONFIG_MSAD_FILTER
425 
426 #define msad_options options
428 
429 const AVFilter ff_vf_msad = {
430  .name = "msad",
431  .description = NULL_IF_CONFIG_SMALL("Calculate the MSAD between two video streams."),
432  .preinit = msad_framesync_preinit,
433  .init = init,
434  .uninit = uninit,
435  .activate = activate,
436  .priv_size = sizeof(IdentityContext),
437  .priv_class = &msad_class,
444 };
445 
446 #endif /* CONFIG_MSAD_FILTER */
AV_PIX_FMT_GBRAP16
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Definition: pixfmt.h:481
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Configure a frame sync structure.
Definition: framesync.c:134
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Definition: log.h:186
IdentityContext::nb_components
int nb_components
Definition: vf_identity.c:49
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Definition: regdef.h:70
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Definition: pixfmt.h:64
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Definition: vf_identity.c:57
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Definition: mathematics.h:67
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const AVFilter ff_vf_identity
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
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void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:304
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Send a frame of data to the next filter.
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Definition: pixdesc.c:2858
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Definition: internal.h:170
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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
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Definition: vf_identity.c:41
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Definition: vf_identity.c:261
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This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
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Definition: vf_identity.c:42
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Definition: vf_identity.c:172
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Definition: opt.h:251
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Definition: framesync.h:351
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Definition: vf_identity.c:45
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Definition: framesync.h:168
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AV_PIX_FMT_GBRP14
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Definition: pixfmt.h:477
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
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Definition: pixfmt.h:205
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static void set_meta(AVFilterContext *ctx, AVDictionary **metadata, const char *key, char comp, float d)
Definition: vf_identity.c:154
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unsigned(* filter_line)(const uint8_t *buf, const uint8_t *ref, int w)
Definition: vf_identity.c:54
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Definition: vf_identity.c:48
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Definition: pixfmt.h:475
AV_PIX_FMT_GRAY16
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Definition: pixfmt.h:443
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Definition: vf_identity.c:39
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Numerator.
Definition: rational.h:59
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
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static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
Definition: vf_identity.c:73
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@ AV_PIX_FMT_YUVJ411P
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Definition: pixfmt.h:276
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#define AV_LOG_ERROR
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Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
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
AV_PIX_FMT_GBRAP10
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Definition: pixfmt.h:479
s
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AV_PIX_FMT_GBRAP12
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Definition: pixfmt.h:480
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Definition: vf_identity.c:388
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Handle slice ends.
Definition: mpeg12dec.c:2010
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Definition: vf_identity.c:43
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Definition: pixfmt.h:442
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Definition: internal.h:190
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
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Definition: pixfmt.h:80
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Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
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Definition: pixfmt.h:440
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ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition: scene_sad.c:59
AV_PIX_FMT_GBRP16
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Definition: pixfmt.h:478
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
IdentityContext::filter_slice
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Definition: vf_identity.c:55
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Definition: cbs_vp9.c:258
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Definition: vf_identity.c:42
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
ThreadData::planewidth
int planewidth[4]
Definition: vf_identity.c:90
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:474
IdentityContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_identity.c:46
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
compute_images_identity
static int compute_images_identity(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:125
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:115
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:372
master
const char * master
Definition: vf_curves.c:129
P
#define P
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_identity.c:246
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_identity.c:350
ff_vf_msad
const AVFilter ff_vf_msad
ff_scene_sad_fn
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition: scene_sad.h:34
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
internal.h
ThreadData::score
uint64_t ** score
Definition: vf_identity.c:92
identity_line_8bit
static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
Definition: vf_identity.c:63
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
options
static const AVOption options[]
Definition: vf_identity.c:396
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:793
ThreadData
Used for passing data between threads.
Definition: dsddec.c:69
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
IdentityContext::nb_threads
int nb_threads
Definition: vf_identity.c:50
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
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
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:272
av_cmp_q
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
AVFilter
Filter definition.
Definition: avfilter.h:171
ret
ret
Definition: filter_design.txt:187
IdentityContext::min_score
double min_score
Definition: vf_identity.c:42
activate
static int activate(AVFilterContext *ctx)
Definition: vf_identity.c:344
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_identity.c:237
framesync.h
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
avfilter.h
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:143
IdentityContext::scores
uint64_t ** scores
Definition: vf_identity.c:53
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
ThreadData::main_linesize
int main_linesize[4]
Definition: vf_identity.c:88
identity_inputs
static const AVFilterPad identity_inputs[]
Definition: vf_identity.c:377
AVFilterContext
An instance of a filter.
Definition: avfilter.h:415
IdentityContext::planeheight
int planeheight[4]
Definition: vf_identity.c:52
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:127
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
IdentityContext::is_rgb
int is_rgb
Definition: vf_identity.c:44
ThreadData::nb_components
int nb_components
Definition: vf_identity.c:93
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:86
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
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
ThreadData::planeheight
int planeheight[4]
Definition: vf_identity.c:91
d
d
Definition: ffmpeg_filter.c:156
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:160
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
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
PF
#define PF(suf)
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:355
avstring.h
compute_images_msad
static int compute_images_msad(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:97
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:390
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
drawutils.h
IdentityContext::planewidth
int planewidth[4]
Definition: vf_identity.c:51
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:142
ThreadData::ref_data
const uint8_t * ref_data[4]
Definition: vf_identity.c:87
int
int
Definition: ffmpeg_filter.c:156
snprintf
#define snprintf
Definition: snprintf.h:34
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_identity.c:315
IdentityContext::score_comp
double score_comp[4]
Definition: vf_identity.c:42
ThreadData::main_data
const uint8_t * main_data[4]
Definition: vf_identity.c:86