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/mem.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixdesc.h"
32 #include "avfilter.h"
33 #include "drawutils.h"
34 #include "filters.h"
35 #include "framesync.h"
36 #include "scene_sad.h"
37 
38 typedef struct IdentityContext {
39  const AVClass *class;
40  FFFrameSync fs;
41  double score, min_score, max_score, score_comp[4];
42  uint64_t nb_frames;
43  int is_rgb;
44  int is_msad;
45  uint8_t rgba_map[4];
46  int max[4];
47  char comps[4];
48  int nb_components;
49  int nb_threads;
50  int planewidth[4];
51  int planeheight[4];
52  uint64_t **scores;
53  unsigned (*filter_line)(const uint8_t *buf, const uint8_t *ref, int w);
54  int (*filter_slice)(AVFilterContext *ctx, void *arg,
55  int jobnr, int nb_jobs);
56  ff_scene_sad_fn sad;
57 } IdentityContext;
58 
59 #define OFFSET(x) offsetof(IdentityContext, x)
60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
61 
62 static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
63 {
64  unsigned score = 0;
65 
66  for (int j = 0; j < outw; j++)
67  score += main_line[j] == ref_line[j];
68 
69  return score;
70 }
71 
72 static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
73 {
74  const uint16_t *main_line = (const uint16_t *)mmain_line;
75  const uint16_t *ref_line = (const uint16_t *)rref_line;
76  unsigned score = 0;
77 
78  for (int j = 0; j < outw; j++)
79  score += main_line[j] == ref_line[j];
80 
81  return score;
82 }
83 
84 typedef struct ThreadData {
85  const uint8_t *main_data[4];
86  const uint8_t *ref_data[4];
87  int main_linesize[4];
88  int ref_linesize[4];
89  int planewidth[4];
90  int planeheight[4];
91  uint64_t **score;
92  int nb_components;
93 } ThreadData;
94 
95 static
96 int compute_images_msad(AVFilterContext *ctx, void *arg,
97  int jobnr, int nb_jobs)
98 {
99  IdentityContext *s = ctx->priv;
100  ThreadData *td = arg;
101  uint64_t *score = td->score[jobnr];
102 
103  for (int c = 0; c < td->nb_components; c++) {
104  const int outw = td->planewidth[c];
105  const int outh = td->planeheight[c];
106  const int slice_start = (outh * jobnr) / nb_jobs;
107  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
108  const int ref_linesize = td->ref_linesize[c];
109  const int main_linesize = td->main_linesize[c];
110  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
111  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
112  uint64_t m = 0;
113 
114  s->sad(main_line, main_linesize, ref_line, ref_linesize,
115  outw, slice_end - slice_start, &m);
116 
117  score[c] = m;
118  }
119 
120  return 0;
121 }
122 
123 static
124 int compute_images_identity(AVFilterContext *ctx, void *arg,
125  int jobnr, int nb_jobs)
126 {
127  IdentityContext *s = ctx->priv;
128  ThreadData *td = arg;
129  uint64_t *score = td->score[jobnr];
130 
131  for (int c = 0; c < td->nb_components; c++) {
132  const int outw = td->planewidth[c];
133  const int outh = td->planeheight[c];
134  const int slice_start = (outh * jobnr) / nb_jobs;
135  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
136  const int ref_linesize = td->ref_linesize[c];
137  const int main_linesize = td->main_linesize[c];
138  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
139  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
140  uint64_t m = 0;
141 
142  for (int i = slice_start; i < slice_end; i++) {
143  m += s->filter_line(main_line, ref_line, outw);
144  ref_line += ref_linesize;
145  main_line += main_linesize;
146  }
147  score[c] = m;
148  }
149 
150  return 0;
151 }
152 
153 static void set_meta(AVFilterContext *ctx,
154  AVDictionary **metadata, const char *key, char comp, float d)
155 {
156  char value[128];
157  snprintf(value, sizeof(value), "%f", d);
158  if (comp) {
159  char key2[128];
160  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s%c",
161  ctx->filter->name, ctx->filter->name, key, comp);
162  av_dict_set(metadata, key2, value, 0);
163  } else {
164  char key2[128];
165  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s",
166  ctx->filter->name, ctx->filter->name, key);
167  av_dict_set(metadata, key2, value, 0);
168  }
169 }
170 
171 static int do_identity(FFFrameSync *fs)
172 {
173  AVFilterContext *ctx = fs->parent;
174  IdentityContext *s = ctx->priv;
175  AVFrame *master, *ref;
176  double comp_score[4], score = 0.;
177  uint64_t comp_sum[4] = { 0 };
178  AVDictionary **metadata;
179  ThreadData td;
180  int ret;
181 
182  ret = ff_framesync_dualinput_get(fs, &master, &ref);
183  if (ret < 0)
184  return ret;
185  if (ctx->is_disabled || !ref)
186  return ff_filter_frame(ctx->outputs[0], master);
187  metadata = &master->metadata;
188 
189  td.nb_components = s->nb_components;
190  td.score = s->scores;
191  for (int c = 0; c < s->nb_components; c++) {
192  td.main_data[c] = master->data[c];
193  td.ref_data[c] = ref->data[c];
194  td.main_linesize[c] = master->linesize[c];
195  td.ref_linesize[c] = ref->linesize[c];
196  td.planewidth[c] = s->planewidth[c];
197  td.planeheight[c] = s->planeheight[c];
198  }
199 
200  ff_filter_execute(ctx, s->filter_slice, &td, NULL,
201  FFMIN(s->planeheight[1], s->nb_threads));
202 
203  for (int j = 0; j < s->nb_threads; j++) {
204  for (int c = 0; c < s->nb_components; c++)
205  comp_sum[c] += s->scores[j][c];
206  }
207 
208  for (int c = 0; c < s->nb_components; c++)
209  comp_score[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
210 
211  for (int c = 0; c < s->nb_components && s->is_msad; c++)
212  comp_score[c] /= (double)s->max[c];
213 
214  for (int c = 0; c < s->nb_components; c++)
215  score += comp_score[c];
216  score /= s->nb_components;
217 
218  s->min_score = FFMIN(s->min_score, score);
219  s->max_score = FFMAX(s->max_score, score);
220 
221  s->score += score;
222 
223  for (int j = 0; j < s->nb_components; j++)
224  s->score_comp[j] += comp_score[j];
225  s->nb_frames++;
226 
227  for (int j = 0; j < s->nb_components; j++) {
228  int c = s->is_rgb ? s->rgba_map[j] : j;
229  set_meta(ctx, metadata, ".", s->comps[j], comp_score[c]);
230  }
231  set_meta(ctx, metadata, "_avg", 0, score);
232 
233  return ff_filter_frame(ctx->outputs[0], master);
234 }
235 
236 static av_cold int init(AVFilterContext *ctx)
237 {
238  IdentityContext *s = ctx->priv;
239 
240  s->fs.on_event = do_identity;
241 
242  return 0;
243 }
244 
245 static const enum AVPixelFormat pix_fmts[] = {
246  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
247 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
248 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
249 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
250  PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
251  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
252  AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
253  AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
254  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
255  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
256  AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
257  AV_PIX_FMT_NONE
258 };
259 
260 static int config_input_ref(AVFilterLink *inlink)
261 {
262  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
263  AVFilterContext *ctx = inlink->dst;
264  IdentityContext *s = ctx->priv;
265 
266  s->nb_threads = ff_filter_get_nb_threads(ctx);
267  s->nb_components = desc->nb_components;
268  if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
269  ctx->inputs[0]->h != ctx->inputs[1]->h) {
270  av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
271  return AVERROR(EINVAL);
272  }
273 
274  s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
275  s->comps[0] = s->is_rgb ? 'R' : 'Y' ;
276  s->comps[1] = s->is_rgb ? 'G' : 'U' ;
277  s->comps[2] = s->is_rgb ? 'B' : 'V' ;
278  s->comps[3] = 'A';
279 
280  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
281  s->planeheight[0] = s->planeheight[3] = inlink->h;
282  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
283  s->planewidth[0] = s->planewidth[3] = inlink->w;
284 
285  s->scores = av_calloc(s->nb_threads, sizeof(*s->scores));
286  if (!s->scores)
287  return AVERROR(ENOMEM);
288 
289  for (int t = 0; t < s->nb_threads; t++) {
290  s->scores[t] = av_calloc(s->nb_components, sizeof(*s->scores[0]));
291  if (!s->scores[t])
292  return AVERROR(ENOMEM);
293  }
294 
295  s->min_score = +INFINITY;
296  s->max_score = -INFINITY;
297 
298  s->max[0] = (1 << desc->comp[0].depth) - 1;
299  s->max[1] = (1 << desc->comp[1].depth) - 1;
300  s->max[2] = (1 << desc->comp[2].depth) - 1;
301  s->max[3] = (1 << desc->comp[3].depth) - 1;
302 
303  s->is_msad = !strcmp(ctx->filter->name, "msad");
304  s->filter_slice = !s->is_msad ? compute_images_identity : compute_images_msad;
305  s->filter_line = desc->comp[0].depth > 8 ? identity_line_16bit : identity_line_8bit;
306 
307  s->sad = ff_scene_sad_get_fn(desc->comp[0].depth <= 8 ? 8 : 16);
308  if (!s->sad)
309  return AVERROR(EINVAL);
310 
311  return 0;
312 }
313 
314 static int config_output(AVFilterLink *outlink)
315 {
316  AVFilterContext *ctx = outlink->src;
317  IdentityContext *s = ctx->priv;
318  AVFilterLink *mainlink = ctx->inputs[0];
319  FilterLink *il = ff_filter_link(mainlink);
320  FilterLink *ol = ff_filter_link(outlink);
321  int ret;
322 
323  ret = ff_framesync_init_dualinput(&s->fs, ctx);
324  if (ret < 0)
325  return ret;
326  outlink->w = mainlink->w;
327  outlink->h = mainlink->h;
328  outlink->time_base = mainlink->time_base;
329  outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
330  ol->frame_rate = il->frame_rate;
331  if ((ret = ff_framesync_configure(&s->fs)) < 0)
332  return ret;
333 
334  outlink->time_base = s->fs.time_base;
335 
336  if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
337  av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
338  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",
339  mainlink->time_base.num, mainlink->time_base.den,
340  ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
341 
342  return 0;
343 }
344 
345 static int activate(AVFilterContext *ctx)
346 {
347  IdentityContext *s = ctx->priv;
348  return ff_framesync_activate(&s->fs);
349 }
350 
351 static av_cold void uninit(AVFilterContext *ctx)
352 {
353  IdentityContext *s = ctx->priv;
354 
355  if (s->nb_frames > 0) {
356  char buf[256];
357 
358  buf[0] = 0;
359  for (int j = 0; j < s->nb_components; j++) {
360  int c = s->is_rgb ? s->rgba_map[j] : j;
361  av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], s->score_comp[c] / s->nb_frames);
362  }
363 
364  av_log(ctx, AV_LOG_INFO, "%s%s average:%f min:%f max:%f\n",
365  ctx->filter->name,
366  buf,
367  s->score / s->nb_frames,
368  s->min_score,
369  s->max_score);
370  }
371 
372  ff_framesync_uninit(&s->fs);
373  for (int t = 0; t < s->nb_threads && s->scores; t++)
374  av_freep(&s->scores[t]);
375  av_freep(&s->scores);
376 }
377 
378 static const AVFilterPad identity_inputs[] = {
379  {
380  .name = "main",
381  .type = AVMEDIA_TYPE_VIDEO,
382  },{
383  .name = "reference",
384  .type = AVMEDIA_TYPE_VIDEO,
385  .config_props = config_input_ref,
386  },
387 };
388 
389 static const AVFilterPad identity_outputs[] = {
390  {
391  .name = "default",
392  .type = AVMEDIA_TYPE_VIDEO,
393  .config_props = config_output,
394  },
395 };
396 
397 static const AVOption options[] = {
398  { NULL }
399 };
400 
401 #if CONFIG_IDENTITY_FILTER
402 
403 #define identity_options options
404 FRAMESYNC_DEFINE_CLASS(identity, IdentityContext, fs);
405 
406 const AVFilter ff_vf_identity = {
407  .name = "identity",
408  .description = NULL_IF_CONFIG_SMALL("Calculate the Identity between two video streams."),
409  .preinit = identity_framesync_preinit,
410  .init = init,
411  .uninit = uninit,
412  .activate = activate,
413  .priv_size = sizeof(IdentityContext),
414  .priv_class = &identity_class,
415  FILTER_INPUTS(identity_inputs),
416  FILTER_OUTPUTS(identity_outputs),
417  FILTER_PIXFMTS_ARRAY(pix_fmts),
418  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
419  AVFILTER_FLAG_SLICE_THREADS |
420  AVFILTER_FLAG_METADATA_ONLY,
421 };
422 
423 #endif /* CONFIG_IDENTITY_FILTER */
424 
425 #if CONFIG_MSAD_FILTER
426 
427 #define msad_options options
428 FRAMESYNC_DEFINE_CLASS(msad, IdentityContext, fs);
429 
430 const AVFilter ff_vf_msad = {
431  .name = "msad",
432  .description = NULL_IF_CONFIG_SMALL("Calculate the MSAD between two video streams."),
433  .preinit = msad_framesync_preinit,
434  .init = init,
435  .uninit = uninit,
436  .activate = activate,
437  .priv_size = sizeof(IdentityContext),
438  .priv_class = &msad_class,
439  FILTER_INPUTS(identity_inputs),
440  FILTER_OUTPUTS(identity_outputs),
441  FILTER_PIXFMTS_ARRAY(pix_fmts),
442  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
443  AVFILTER_FLAG_SLICE_THREADS |
444  AVFILTER_FLAG_METADATA_ONLY,
445 };
446 
447 #endif /* CONFIG_MSAD_FILTER */
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:525
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:137
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:215
IdentityContext::nb_components
int nb_components
Definition: vf_identity.c:48
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
IdentityContext::sad
ff_scene_sad_fn sad
Definition: vf_identity.c:56
INFINITY
#define INFINITY
Definition: mathematics.h:118
ff_vf_identity
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
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:301
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static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:81
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int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1062
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const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3170
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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
IdentityContext::fs
FFFrameSync fs
Definition: vf_identity.c:40
config_input_ref
static int config_input_ref(AVFilterLink *inlink)
Definition: vf_identity.c:260
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
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w
uint8_t w
Definition: llviddspenc.c:38
ThreadData::ref_linesize
int ref_linesize
Definition: vf_bm3d.c:57
IdentityContext::score
double score
Definition: vf_identity.c:41
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static int do_identity(FFFrameSync *fs)
Definition: vf_identity.c:171
AVOption
AVOption.
Definition: opt.h:429
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#define PF_NOALPHA(suf)
FRAMESYNC_DEFINE_CLASS
#define FRAMESYNC_DEFINE_CLASS(name, context, field)
Definition: framesync.h:352
IdentityContext::is_msad
int is_msad
Definition: vf_identity.c:44
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@ AV_PIX_FMT_YUV440P
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Definition: pixfmt.h:106
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Definition: dict.c:34
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#define FFMAX(a, b)
Definition: macros.h:47
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const char * name
Filter name.
Definition: avfilter.h:205
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Frame sync structure.
Definition: framesync.h:168
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Definition: avstring.c:103
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:482
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:520
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Handle slice ends.
Definition: mpeg12dec.c:1719
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
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static void set_meta(AVFilterContext *ctx, AVDictionary **metadata, const char *key, char comp, float d)
Definition: vf_identity.c:153
IdentityContext::filter_line
unsigned(* filter_line)(const uint8_t *buf, const uint8_t *ref, int w)
Definition: vf_identity.c:53
IdentityContext::comps
char comps[4]
Definition: vf_identity.c:47
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:518
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:486
IdentityContext
Definition: vf_identity.c:38
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
identity_line_16bit
static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
Definition: vf_identity.c:72
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_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:209
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:86
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:522
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:523
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
IdentityContext::max
int max[4]
Definition: vf_identity.c:46
identity_outputs
static const AVFilterPad identity_outputs[]
Definition: vf_identity.c:389
filters.h
ctx
AVFormatContext * ctx
Definition: movenc.c:49
IdentityContext::nb_frames
uint64_t nb_frames
Definition: vf_identity.c:42
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:485
key
const char * key
Definition: hwcontext_opencl.c:189
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
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
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:483
ff_scene_sad_get_fn
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition: scene_sad.c:59
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:521
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:75
NULL
#define NULL
Definition: coverity.c:32
IdentityContext::filter_slice
int(* filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:54
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
IdentityContext::max_score
double max_score
Definition: vf_identity.c:41
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
ThreadData::planewidth
int planewidth[4]
Definition: vf_identity.c:89
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:517
IdentityContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_identity.c:45
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
ff_filter_link
static FilterLink * ff_filter_link(AVFilterLink *link)
Definition: filters.h:197
compute_images_identity
static int compute_images_identity(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:124
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_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:130
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:245
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_identity.c:351
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:220
ThreadData::score
uint64_t ** score
Definition: vf_identity.c:91
identity_line_8bit
static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
Definition: vf_identity.c:62
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
options
static const AVOption options[]
Definition: vf_identity.c:397
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:519
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:841
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
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:49
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: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
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: dec.c:738
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:201
ret
ret
Definition: filter_design.txt:187
IdentityContext::min_score
double min_score
Definition: vf_identity.c:41
activate
static int activate(AVFilterContext *ctx)
Definition: vf_identity.c:345
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_identity.c:236
framesync.h
ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: avfilter.c:1667
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
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:168
IdentityContext::scores
uint64_t ** scores
Definition: vf_identity.c:52
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:117
ThreadData::main_linesize
int main_linesize[4]
Definition: vf_identity.c:87
identity_inputs
static const AVFilterPad identity_inputs[]
Definition: vf_identity.c:378
AVFilterContext
An instance of a filter.
Definition: avfilter.h:457
IdentityContext::planeheight
int planeheight[4]
Definition: vf_identity.c:51
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
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:152
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
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:43
ThreadData::nb_components
int nb_components
Definition: vf_identity.c:92
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:88
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
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:79
ThreadData::planeheight
int planeheight[4]
Definition: vf_identity.c:90
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:190
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_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:352
avstring.h
compute_images_msad
static int compute_images_msad(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:96
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:484
drawutils.h
IdentityContext::planewidth
int planewidth[4]
Definition: vf_identity.c:50
ThreadData::ref_data
const uint8_t * ref_data[4]
Definition: vf_identity.c:86
snprintf
#define snprintf
Definition: snprintf.h:34
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_identity.c:314
IdentityContext::score_comp
double score_comp[4]
Definition: vf_identity.c:41
ThreadData::main_data
const uint8_t * main_data[4]
Definition: vf_identity.c:85
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