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  * Caculate the Identity between two input videos.
24  */
25 
26 #include "libavutil/avstring.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "avfilter.h"
30 #include "drawutils.h"
31 #include "formats.h"
32 #include "framesync.h"
33 #include "internal.h"
34 #include "video.h"
35 #include "scene_sad.h"
36 
37 typedef struct IdentityContext {
38  const AVClass *class;
39  FFFrameSync fs;
40  double score, min_score, max_score, score_comp[4];
41  uint64_t nb_frames;
42  int is_rgb;
43  int is_msad;
44  uint8_t rgba_map[4];
45  int max[4];
46  char comps[4];
47  int nb_components;
48  int nb_threads;
49  int planewidth[4];
50  int planeheight[4];
51  uint64_t **scores;
52  unsigned (*filter_line)(const uint8_t *buf, const uint8_t *ref, int w);
53  int (*filter_slice)(AVFilterContext *ctx, void *arg,
54  int jobnr, int nb_jobs);
55  ff_scene_sad_fn sad;
56 } IdentityContext;
57 
58 #define OFFSET(x) offsetof(IdentityContext, x)
59 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
60 
61 static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
62 {
63  unsigned score = 0;
64 
65  for (int j = 0; j < outw; j++)
66  score += main_line[j] == ref_line[j];
67 
68  return score;
69 }
70 
71 static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
72 {
73  const uint16_t *main_line = (const uint16_t *)mmain_line;
74  const uint16_t *ref_line = (const uint16_t *)rref_line;
75  unsigned score = 0;
76 
77  for (int j = 0; j < outw; j++)
78  score += main_line[j] == ref_line[j];
79 
80  return score;
81 }
82 
83 typedef struct ThreadData {
84  const uint8_t *main_data[4];
85  const uint8_t *ref_data[4];
86  int main_linesize[4];
87  int ref_linesize[4];
88  int planewidth[4];
89  int planeheight[4];
90  uint64_t **score;
91  int nb_components;
92 } ThreadData;
93 
94 static
95 int compute_images_msad(AVFilterContext *ctx, void *arg,
96  int jobnr, int nb_jobs)
97 {
98  IdentityContext *s = ctx->priv;
99  ThreadData *td = arg;
100  uint64_t *score = td->score[jobnr];
101 
102  for (int c = 0; c < td->nb_components; c++) {
103  const int outw = td->planewidth[c];
104  const int outh = td->planeheight[c];
105  const int slice_start = (outh * jobnr) / nb_jobs;
106  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
107  const int ref_linesize = td->ref_linesize[c];
108  const int main_linesize = td->main_linesize[c];
109  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
110  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
111  uint64_t m = 0;
112 
113  s->sad(main_line, main_linesize, ref_line, ref_linesize,
114  outw, slice_end - slice_start, &m);
115 
116  score[c] = m;
117  }
118 
119  return 0;
120 }
121 
122 static
123 int compute_images_identity(AVFilterContext *ctx, void *arg,
124  int jobnr, int nb_jobs)
125 {
126  IdentityContext *s = ctx->priv;
127  ThreadData *td = arg;
128  uint64_t *score = td->score[jobnr];
129 
130  for (int c = 0; c < td->nb_components; c++) {
131  const int outw = td->planewidth[c];
132  const int outh = td->planeheight[c];
133  const int slice_start = (outh * jobnr) / nb_jobs;
134  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
135  const int ref_linesize = td->ref_linesize[c];
136  const int main_linesize = td->main_linesize[c];
137  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
138  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
139  uint64_t m = 0;
140 
141  for (int i = slice_start; i < slice_end; i++) {
142  m += s->filter_line(main_line, ref_line, outw);
143  ref_line += ref_linesize;
144  main_line += main_linesize;
145  }
146  score[c] = m;
147  }
148 
149  return 0;
150 }
151 
152 static void set_meta(AVFilterContext *ctx,
153  AVDictionary **metadata, const char *key, char comp, float d)
154 {
155  char value[128];
156  snprintf(value, sizeof(value), "%f", d);
157  if (comp) {
158  char key2[128];
159  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s%c",
160  ctx->filter->name, ctx->filter->name, key, comp);
161  av_dict_set(metadata, key2, value, 0);
162  } else {
163  char key2[128];
164  snprintf(key2, sizeof(key2), "lavfi.%s.%s%s",
165  ctx->filter->name, ctx->filter->name, key);
166  av_dict_set(metadata, key2, value, 0);
167  }
168 }
169 
170 static int do_identity(FFFrameSync *fs)
171 {
172  AVFilterContext *ctx = fs->parent;
173  IdentityContext *s = ctx->priv;
174  AVFrame *master, *ref;
175  double comp_score[4], score = 0.;
176  uint64_t comp_sum[4] = { 0 };
177  AVDictionary **metadata;
178  ThreadData td;
179  int ret;
180 
181  ret = ff_framesync_dualinput_get(fs, &master, &ref);
182  if (ret < 0)
183  return ret;
184  if (ctx->is_disabled || !ref)
185  return ff_filter_frame(ctx->outputs[0], master);
186  metadata = &master->metadata;
187 
188  td.nb_components = s->nb_components;
189  td.score = s->scores;
190  for (int c = 0; c < s->nb_components; c++) {
191  td.main_data[c] = master->data[c];
192  td.ref_data[c] = ref->data[c];
193  td.main_linesize[c] = master->linesize[c];
194  td.ref_linesize[c] = ref->linesize[c];
195  td.planewidth[c] = s->planewidth[c];
196  td.planeheight[c] = s->planeheight[c];
197  }
198 
199  ctx->internal->execute(ctx, s->filter_slice, &td, NULL, FFMIN(s->planeheight[1], s->nb_threads));
200 
201  for (int j = 0; j < s->nb_threads; j++) {
202  for (int c = 0; c < s->nb_components; c++)
203  comp_sum[c] += s->scores[j][c];
204  }
205 
206  for (int c = 0; c < s->nb_components; c++)
207  comp_score[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
208 
209  for (int c = 0; c < s->nb_components && s->is_msad; c++)
210  comp_score[c] /= (double)s->max[c];
211 
212  for (int c = 0; c < s->nb_components; c++)
213  score += comp_score[c];
214  score /= s->nb_components;
215 
216  s->min_score = FFMIN(s->min_score, score);
217  s->max_score = FFMAX(s->max_score, score);
218 
219  s->score += score;
220 
221  for (int j = 0; j < s->nb_components; j++)
222  s->score_comp[j] += comp_score[j];
223  s->nb_frames++;
224 
225  for (int j = 0; j < s->nb_components; j++) {
226  int c = s->is_rgb ? s->rgba_map[j] : j;
227  set_meta(ctx, metadata, ".", s->comps[j], comp_score[c]);
228  }
229  set_meta(ctx, metadata, "_avg", 0, score);
230 
231  return ff_filter_frame(ctx->outputs[0], master);
232 }
233 
234 static av_cold int init(AVFilterContext *ctx)
235 {
236  IdentityContext *s = ctx->priv;
237 
238  s->fs.on_event = do_identity;
239 
240  return 0;
241 }
242 
243 static int query_formats(AVFilterContext *ctx)
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  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
261  if (!fmts_list)
262  return AVERROR(ENOMEM);
263  return ff_set_common_formats(ctx, fmts_list);
264 }
265 
266 static int config_input_ref(AVFilterLink *inlink)
267 {
268  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
269  AVFilterContext *ctx = inlink->dst;
270  IdentityContext *s = ctx->priv;
271 
272  s->nb_threads = ff_filter_get_nb_threads(ctx);
273  s->nb_components = desc->nb_components;
274  if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
275  ctx->inputs[0]->h != ctx->inputs[1]->h) {
276  av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
277  return AVERROR(EINVAL);
278  }
279  if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
280  av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
281  return AVERROR(EINVAL);
282  }
283 
284  s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
285  s->comps[0] = s->is_rgb ? 'R' : 'Y' ;
286  s->comps[1] = s->is_rgb ? 'G' : 'U' ;
287  s->comps[2] = s->is_rgb ? 'B' : 'V' ;
288  s->comps[3] = 'A';
289 
290  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
291  s->planeheight[0] = s->planeheight[3] = inlink->h;
292  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
293  s->planewidth[0] = s->planewidth[3] = inlink->w;
294 
295  s->scores = av_calloc(s->nb_threads, sizeof(*s->scores));
296  if (!s->scores)
297  return AVERROR(ENOMEM);
298 
299  for (int t = 0; t < s->nb_threads && s->scores; t++) {
300  s->scores[t] = av_calloc(s->nb_components, sizeof(*s->scores[0]));
301  if (!s->scores[t])
302  return AVERROR(ENOMEM);
303  }
304 
305  s->min_score = +INFINITY;
306  s->max_score = -INFINITY;
307 
308  s->max[0] = (1 << desc->comp[0].depth) - 1;
309  s->max[1] = (1 << desc->comp[1].depth) - 1;
310  s->max[2] = (1 << desc->comp[2].depth) - 1;
311  s->max[3] = (1 << desc->comp[3].depth) - 1;
312 
313  s->is_msad = !strcmp(ctx->filter->name, "msad");
314  s->filter_slice = !s->is_msad ? compute_images_identity : compute_images_msad;
315  s->filter_line = desc->comp[0].depth > 8 ? identity_line_16bit : identity_line_8bit;
316 
317  s->sad = ff_scene_sad_get_fn(desc->comp[0].depth <= 8 ? 8 : 16);
318  if (!s->sad)
319  return AVERROR(EINVAL);
320 
321  return 0;
322 }
323 
324 static int config_output(AVFilterLink *outlink)
325 {
326  AVFilterContext *ctx = outlink->src;
327  IdentityContext *s = ctx->priv;
328  AVFilterLink *mainlink = ctx->inputs[0];
329  int ret;
330 
331  ret = ff_framesync_init_dualinput(&s->fs, ctx);
332  if (ret < 0)
333  return ret;
334  outlink->w = mainlink->w;
335  outlink->h = mainlink->h;
336  outlink->time_base = mainlink->time_base;
337  outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
338  outlink->frame_rate = mainlink->frame_rate;
339  if ((ret = ff_framesync_configure(&s->fs)) < 0)
340  return ret;
341 
342  outlink->time_base = s->fs.time_base;
343 
344  if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
345  av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
346  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",
347  mainlink->time_base.num, mainlink->time_base.den,
348  ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
349 
350  return 0;
351 }
352 
353 static int activate(AVFilterContext *ctx)
354 {
355  IdentityContext *s = ctx->priv;
356  return ff_framesync_activate(&s->fs);
357 }
358 
359 static av_cold void uninit(AVFilterContext *ctx)
360 {
361  IdentityContext *s = ctx->priv;
362 
363  if (s->nb_frames > 0) {
364  char buf[256];
365 
366  buf[0] = 0;
367  for (int j = 0; j < s->nb_components; j++) {
368  int c = s->is_rgb ? s->rgba_map[j] : j;
369  av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], s->score_comp[c] / s->nb_frames);
370  }
371 
372  av_log(ctx, AV_LOG_INFO, "%s%s average:%f min:%f max:%f\n",
373  ctx->filter->name,
374  buf,
375  s->score / s->nb_frames,
376  s->min_score,
377  s->max_score);
378  }
379 
380  ff_framesync_uninit(&s->fs);
381  for (int t = 0; t < s->nb_threads && s->scores; t++)
382  av_freep(&s->scores[t]);
383  av_freep(&s->scores);
384 }
385 
386 static const AVFilterPad identity_inputs[] = {
387  {
388  .name = "main",
389  .type = AVMEDIA_TYPE_VIDEO,
390  },{
391  .name = "reference",
392  .type = AVMEDIA_TYPE_VIDEO,
393  .config_props = config_input_ref,
394  },
395  { NULL }
396 };
397 
398 static const AVFilterPad identity_outputs[] = {
399  {
400  .name = "default",
401  .type = AVMEDIA_TYPE_VIDEO,
402  .config_props = config_output,
403  },
404  { NULL }
405 };
406 
407 static const AVOption options[] = {
408  { NULL }
409 };
410 
411 #if CONFIG_IDENTITY_FILTER
412 
413 #define identity_options options
414 FRAMESYNC_DEFINE_CLASS(identity, IdentityContext, fs);
415 
416 AVFilter ff_vf_identity = {
417  .name = "identity",
418  .description = NULL_IF_CONFIG_SMALL("Calculate the Identity between two video streams."),
419  .preinit = identity_framesync_preinit,
420  .init = init,
421  .uninit = uninit,
422  .query_formats = query_formats,
423  .activate = activate,
424  .priv_size = sizeof(IdentityContext),
425  .priv_class = &identity_class,
426  .inputs = identity_inputs,
427  .outputs = identity_outputs,
428  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
429 };
430 
431 #endif /* CONFIG_IDENTITY_FILTER */
432 
433 #if CONFIG_MSAD_FILTER
434 
435 #define msad_options options
436 FRAMESYNC_DEFINE_CLASS(msad, IdentityContext, fs);
437 
438 AVFilter ff_vf_msad = {
439  .name = "msad",
440  .description = NULL_IF_CONFIG_SMALL("Calculate the MSAD between two video streams."),
441  .preinit = msad_framesync_preinit,
442  .init = init,
443  .uninit = uninit,
444  .query_formats = query_formats,
445  .activate = activate,
446  .priv_size = sizeof(IdentityContext),
447  .priv_class = &msad_class,
448  .inputs = identity_inputs,
449  .outputs = identity_outputs,
450  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
451 };
452 
453 #endif /* CONFIG_MSAD_FILTER */
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:124
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
IdentityContext::nb_components
int nb_components
Definition: vf_identity.c:47
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
IdentityContext::sad
ff_scene_sad_fn sad
Definition: vf_identity.c:55
INFINITY
#define INFINITY
Definition: mathematics.h:67
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
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:290
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
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
IdentityContext::fs
FFFrameSync fs
Definition: vf_identity.c:39
config_input_ref
static int config_input_ref(AVFilterLink *inlink)
Definition: vf_identity.c:266
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:39
ThreadData::ref_linesize
int ref_linesize
Definition: vf_bm3d.c:59
IdentityContext::score
double score
Definition: vf_identity.c:40
do_identity
static int do_identity(FFFrameSync *fs)
Definition: vf_identity.c:170
AVOption
AVOption.
Definition: opt.h:248
PF_NOALPHA
#define PF_NOALPHA(suf)
FRAMESYNC_DEFINE_CLASS
#define FRAMESYNC_DEFINE_CLASS(name, context, field)
Definition: framesync.h:302
IdentityContext::is_msad
int is_msad
Definition: vf_identity.c:43
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVDictionary
Definition: dict.c:30
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
video.h
AVFormatContext::internal
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
av_strlcatf
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:65
formats.h
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
set_meta
static void set_meta(AVFilterContext *ctx, AVDictionary **metadata, const char *key, char comp, float d)
Definition: vf_identity.c:152
IdentityContext::filter_line
unsigned(* filter_line)(const uint8_t *buf, const uint8_t *ref, int w)
Definition: vf_identity.c:52
IdentityContext::comps
char comps[4]
Definition: vf_identity.c:46
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
IdentityContext
Definition: vf_identity.c:37
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
identity_line_16bit
static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
Definition: vf_identity.c:71
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:258
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
av_cold
#define av_cold
Definition: attributes.h:90
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:587
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
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
IdentityContext::max
int max[4]
Definition: vf_identity.c:45
identity_outputs
static const AVFilterPad identity_outputs[]
Definition: vf_identity.c:398
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2033
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
ctx
AVFormatContext * ctx
Definition: movenc.c:48
IdentityContext::nb_frames
uint64_t nb_frames
Definition: vf_identity.c:41
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
key
const char * key
Definition: hwcontext_opencl.c:168
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
arg
const char * arg
Definition: jacosubdec.c:66
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
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:418
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
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:53
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
IdentityContext::max_score
double max_score
Definition: vf_identity.c:40
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:88
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
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:414
IdentityContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_identity.c:44
ff_vf_identity
AVFilter ff_vf_identity
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
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
compute_images_identity
static int compute_images_identity(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:123
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:358
master
const char * master
Definition: vf_curves.c:119
P
#define P
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_identity.c:359
ff_scene_sad_fn
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition: scene_sad.h:34
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
internal.h
ThreadData::score
uint64_t ** score
Definition: vf_identity.c:90
i
int i
Definition: input.c:407
identity_line_8bit
static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
Definition: vf_identity.c:61
options
static const AVOption options[]
Definition: vf_identity.c:407
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
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:48
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
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_vf_msad
AVFilter ff_vf_msad
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
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:145
ret
ret
Definition: filter_design.txt:187
IdentityContext::min_score
double min_score
Definition: vf_identity.c:40
activate
static int activate(AVFilterContext *ctx)
Definition: vf_identity.c:353
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_identity.c:234
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
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
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_identity.c:243
IdentityContext::scores
uint64_t ** scores
Definition: vf_identity.c:51
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
ThreadData::main_linesize
int main_linesize[4]
Definition: vf_identity.c:86
identity_inputs
static const AVFilterPad identity_inputs[]
Definition: vf_identity.c:386
AVFilterContext
An instance of a filter.
Definition: avfilter.h:341
IdentityContext::planeheight
int planeheight[4]
Definition: vf_identity.c:50
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
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:117
desc
const char * desc
Definition: libsvtav1.c:79
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:81
IdentityContext::is_rgb
int is_rgb
Definition: vf_identity.c:42
ThreadData::nb_components
int nb_components
Definition: vf_identity.c:91
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
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:70
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:89
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:134
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
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:28
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:341
avstring.h
compute_images_msad
static int compute_images_msad(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_identity.c:95
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:376
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
drawutils.h
IdentityContext::planewidth
int planewidth[4]
Definition: vf_identity.c:49
ThreadData::ref_data
const uint8_t * ref_data[4]
Definition: vf_identity.c:85
int
int
Definition: ffmpeg_filter.c:170
snprintf
#define snprintf
Definition: snprintf.h:34
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_identity.c:324
IdentityContext::score_comp
double score_comp[4]
Definition: vf_identity.c:40
ThreadData::main_data
const uint8_t * main_data[4]
Definition: vf_identity.c:84
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