FFmpeg
vf_geq.c
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1 /*
2  * Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (C) 2012 Clément Bœsch <u pkh me>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * Generic equation change filter
25  * Originally written by Michael Niedermayer for the MPlayer project, and
26  * ported by Clément Bœsch for FFmpeg.
27  */
28 
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/eval.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
34 #include "formats.h"
35 #include "internal.h"
36 #include "video.h"
37 
38 #define MAX_NB_THREADS 32
39 #define NB_PLANES 4
40 
45 };
46 
47 static const char *const var_names[] = { "X", "Y", "W", "H", "N", "SW", "SH", "T", NULL };
49 
50 typedef struct GEQContext {
51  const AVClass *class;
52  AVExpr *e[NB_PLANES][MAX_NB_THREADS]; ///< expressions for each plane and thread
53  char *expr_str[4+3]; ///< expression strings for each plane
54  AVFrame *picref; ///< current input buffer
55  uint8_t *dst; ///< reference pointer to the 8bits output
56  uint16_t *dst16; ///< reference pointer to the 16bits output
57  float *dst32; ///< reference pointer to the 32bits output
58  double values[VAR_VARS_NB]; ///< expression values
59  int hsub, vsub; ///< chroma subsampling
60  int planes; ///< number of planes
62  int is_rgb;
63  int bps;
64 
67 } GEQContext;
68 
69 enum { Y = 0, U, V, A, G, B, R };
70 
71 #define OFFSET(x) offsetof(GEQContext, x)
72 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
73 
74 static const AVOption geq_options[] = {
75  { "lum_expr", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
76  { "lum", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
77  { "cb_expr", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
78  { "cb", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
79  { "cr_expr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
80  { "cr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
81  { "alpha_expr", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
82  { "a", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
83  { "red_expr", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
84  { "r", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
85  { "green_expr", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
86  { "g", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
87  { "blue_expr", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
88  { "b", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
89  { "interpolation","set interpolation method", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, .unit = "interp" },
90  { "i", "set interpolation method", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, .unit = "interp" },
91  { "nearest", "nearest interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST}, 0, 0, FLAGS, .unit = "interp" },
92  { "n", "nearest interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST}, 0, 0, FLAGS, .unit = "interp" },
93  { "bilinear", "bilinear interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
94  { "b", "bilinear interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
95  {NULL},
96 };
97 
99 
100 static inline double getpix(void *priv, double x, double y, int plane)
101 {
102  int xi, yi;
103  GEQContext *geq = priv;
104  AVFrame *picref = geq->picref;
105  const uint8_t *src = picref->data[plane];
106  int linesize = picref->linesize[plane];
107  const int w = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
108  const int h = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
109 
110  if (!src)
111  return 0;
112 
113  if (geq->interpolation == INTERP_BILINEAR) {
114  xi = x = av_clipd(x, 0, w - 2);
115  yi = y = av_clipd(y, 0, h - 2);
116 
117  x -= xi;
118  y -= yi;
119 
120  if (geq->bps > 8 && geq->bps <= 16) {
121  const uint16_t *src16 = (const uint16_t*)src;
122  linesize /= 2;
123 
124  return (1-y)*((1-x)*src16[xi + yi * linesize] + x*src16[xi + 1 + yi * linesize])
125  + y *((1-x)*src16[xi + (yi+1) * linesize] + x*src16[xi + 1 + (yi+1) * linesize]);
126  } else if (geq->bps == 32) {
127  const float *src32 = (const float*)src;
128  linesize /= 4;
129 
130  return (1-y)*((1-x)*src32[xi + yi * linesize] + x*src32[xi + 1 + yi * linesize])
131  + y *((1-x)*src32[xi + (yi+1) * linesize] + x*src32[xi + 1 + (yi+1) * linesize]);
132  } else if (geq->bps == 8) {
133  return (1-y)*((1-x)*src[xi + yi * linesize] + x*src[xi + 1 + yi * linesize])
134  + y *((1-x)*src[xi + (yi+1) * linesize] + x*src[xi + 1 + (yi+1) * linesize]);
135  }
136  } else {
137  xi = av_clipd(x, 0, w - 1);
138  yi = av_clipd(y, 0, h - 1);
139 
140  if (geq->bps > 8 && geq->bps <= 16) {
141  const uint16_t *src16 = (const uint16_t*)src;
142  linesize /= 2;
143 
144  return src16[xi + yi * linesize];
145  } else if (geq->bps == 32) {
146  const float *src32 = (const float*)src;
147  linesize /= 4;
148 
149  return src32[xi + yi * linesize];
150  } else if (geq->bps == 8) {
151  return src[xi + yi * linesize];
152  }
153  }
154 
155  return 0;
156 }
157 
158 static int calculate_sums(GEQContext *geq, int plane, int w, int h)
159 {
160  int xi, yi;
161  AVFrame *picref = geq->picref;
162  const uint8_t *src = picref->data[plane];
163  int linesize = picref->linesize[plane];
164 
165  if (!geq->pixel_sums[plane])
166  geq->pixel_sums[plane] = av_malloc_array(w, h * sizeof (*geq->pixel_sums[plane]));
167  if (!geq->pixel_sums[plane])
168  return AVERROR(ENOMEM);
169  if (geq->bps == 32)
170  linesize /= 4;
171  else if (geq->bps > 8 && geq->bps <= 16)
172  linesize /= 2;
173  for (yi = 0; yi < h; yi ++) {
174  if (geq->bps > 8 && geq->bps <= 16) {
175  const uint16_t *src16 = (const uint16_t*)src;
176  double linesum = 0;
177 
178  for (xi = 0; xi < w; xi ++) {
179  linesum += src16[xi + yi * linesize];
180  geq->pixel_sums[plane][xi + yi * w] = linesum;
181  }
182  } else if (geq->bps == 8) {
183  double linesum = 0;
184 
185  for (xi = 0; xi < w; xi ++) {
186  linesum += src[xi + yi * linesize];
187  geq->pixel_sums[plane][xi + yi * w] = linesum;
188  }
189  } else if (geq->bps == 32) {
190  const float *src32 = (const float*)src;
191  double linesum = 0;
192 
193  for (xi = 0; xi < w; xi ++) {
194  linesum += src32[xi + yi * linesize];
195  geq->pixel_sums[plane][xi + yi * w] = linesum;
196  }
197  }
198  if (yi)
199  for (xi = 0; xi < w; xi ++) {
200  geq->pixel_sums[plane][xi + yi * w] += geq->pixel_sums[plane][xi + yi * w - w];
201  }
202  }
203  return 0;
204 }
205 
206 static inline double getpix_integrate_internal(GEQContext *geq, int x, int y, int plane, int w, int h)
207 {
208  if (x > w - 1) {
209  double boundary = getpix_integrate_internal(geq, w - 1, y, plane, w, h);
210  return 2*boundary - getpix_integrate_internal(geq, 2*(w - 1) - x, y, plane, w, h);
211  } else if (y > h - 1) {
212  double boundary = getpix_integrate_internal(geq, x, h - 1, plane, w, h);
213  return 2*boundary - getpix_integrate_internal(geq, x, 2*(h - 1) - y, plane, w, h);
214  } else if (x < 0) {
215  if (x == -1) return 0;
216  return - getpix_integrate_internal(geq, -x-2, y, plane, w, h);
217  } else if (y < 0) {
218  if (y == -1) return 0;
219  return - getpix_integrate_internal(geq, x, -y-2, plane, w, h);
220  }
221 
222  return geq->pixel_sums[plane][x + y * w];
223 }
224 
225 static inline double getpix_integrate(void *priv, double x, double y, int plane) {
226  GEQContext *geq = priv;
227  AVFrame *picref = geq->picref;
228  const uint8_t *src = picref->data[plane];
229  const int w = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
230  const int h = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
231 
232  if (!src)
233  return 0;
234 
235  return getpix_integrate_internal(geq, lrint(av_clipd(x, -w, 2*w)), lrint(av_clipd(y, -h, 2*h)), plane, w, h);
236 }
237 
238 //TODO: cubic interpolate
239 //TODO: keep the last few frames
240 static double lum(void *priv, double x, double y) { return getpix(priv, x, y, 0); }
241 static double cb(void *priv, double x, double y) { return getpix(priv, x, y, 1); }
242 static double cr(void *priv, double x, double y) { return getpix(priv, x, y, 2); }
243 static double alpha(void *priv, double x, double y) { return getpix(priv, x, y, 3); }
244 
245 static double lumsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 0); }
246 static double cbsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 1); }
247 static double crsub(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 2); }
248 static double alphasum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 3); }
249 
251 {
252  GEQContext *geq = ctx->priv;
253  int plane, ret = 0;
254 
255  if (!geq->expr_str[Y] && !geq->expr_str[G] && !geq->expr_str[B] && !geq->expr_str[R]) {
256  av_log(ctx, AV_LOG_ERROR, "A luminance or RGB expression is mandatory\n");
257  ret = AVERROR(EINVAL);
258  goto end;
259  }
260  geq->is_rgb = !geq->expr_str[Y];
261 
262  if ((geq->expr_str[Y] || geq->expr_str[U] || geq->expr_str[V]) && (geq->expr_str[G] || geq->expr_str[B] || geq->expr_str[R])) {
263  av_log(ctx, AV_LOG_ERROR, "Either YCbCr or RGB but not both must be specified\n");
264  ret = AVERROR(EINVAL);
265  goto end;
266  }
267 
268  if (!geq->expr_str[U] && !geq->expr_str[V]) {
269  /* No chroma at all: fallback on luma */
270  geq->expr_str[U] = av_strdup(geq->expr_str[Y]);
271  geq->expr_str[V] = av_strdup(geq->expr_str[Y]);
272  } else {
273  /* One chroma unspecified, fallback on the other */
274  if (!geq->expr_str[U]) geq->expr_str[U] = av_strdup(geq->expr_str[V]);
275  if (!geq->expr_str[V]) geq->expr_str[V] = av_strdup(geq->expr_str[U]);
276  }
277 
278  if (!geq->expr_str[A] && geq->bps != 32) {
279  geq->expr_str[A] = av_asprintf("%d", (1<<geq->bps) - 1);
280  } else if (!geq->expr_str[A]) {
281  geq->expr_str[A] = av_asprintf("%f", 1.f);
282  }
283  if (!geq->expr_str[G])
284  geq->expr_str[G] = av_strdup("g(X,Y)");
285  if (!geq->expr_str[B])
286  geq->expr_str[B] = av_strdup("b(X,Y)");
287  if (!geq->expr_str[R])
288  geq->expr_str[R] = av_strdup("r(X,Y)");
289 
290  if (geq->is_rgb ?
291  (!geq->expr_str[G] || !geq->expr_str[B] || !geq->expr_str[R])
292  :
293  (!geq->expr_str[U] || !geq->expr_str[V] || !geq->expr_str[A])) {
294  ret = AVERROR(ENOMEM);
295  goto end;
296  }
297 
298  for (plane = 0; plane < NB_PLANES; plane++) {
299  static double (*const p[])(void *, double, double) = {
300  lum , cb , cr , alpha ,
302  };
303  static const char *const func2_yuv_names[] = {
304  "lum" , "cb" , "cr" , "alpha" , "p",
305  "lumsum", "cbsum", "crsum", "alphasum", "psum",
306  NULL };
307  static const char *const func2_rgb_names[] = {
308  "g" , "b" , "r" , "alpha" , "p",
309  "gsum", "bsum", "rsum", "alphasum", "psum",
310  NULL };
311  const char *const *func2_names = geq->is_rgb ? func2_rgb_names : func2_yuv_names;
312  double (*const func2[])(void *, double, double) = {
313  lum , cb , cr , alpha , p[plane],
314  lumsum, cbsum, crsub, alphasum, p[plane + 4],
315  NULL };
316  int counter[10] = {0};
317 
318  for (int i = 0; i < MAX_NB_THREADS; i++) {
319  ret = av_expr_parse(&geq->e[plane][i], geq->expr_str[plane < 3 && geq->is_rgb ? plane+4 : plane], var_names,
320  NULL, NULL, func2_names, func2, 0, ctx);
321  if (ret < 0)
322  goto end;
323  }
324 
325  av_expr_count_func(geq->e[plane][0], counter, FF_ARRAY_ELEMS(counter), 2);
326  geq->needs_sum[plane] = counter[5] + counter[6] + counter[7] + counter[8] + counter[9];
327  }
328 
329 end:
330  return ret;
331 }
332 
334 {
335  GEQContext *geq = ctx->priv;
336  static const enum AVPixelFormat yuv_pix_fmts[] = {
355  };
356  static const enum AVPixelFormat rgb_pix_fmts[] = {
365  };
366  const enum AVPixelFormat *pix_fmts = geq->is_rgb ? rgb_pix_fmts : yuv_pix_fmts;
367 
369 }
370 
372 {
373  GEQContext *geq = inlink->dst->priv;
375 
376  av_assert0(desc);
377 
378  geq->hsub = desc->log2_chroma_w;
379  geq->vsub = desc->log2_chroma_h;
380  geq->bps = desc->comp[0].depth;
381  geq->planes = desc->nb_components;
382  return 0;
383 }
384 
385 typedef struct ThreadData {
386  int height;
387  int width;
388  int plane;
389  int linesize;
390 } ThreadData;
391 
392 static int slice_geq_filter(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
393 {
394  GEQContext *geq = ctx->priv;
395  ThreadData *td = arg;
396  const int height = td->height;
397  const int width = td->width;
398  const int plane = td->plane;
399  const int linesize = td->linesize;
400  const int slice_start = (height * jobnr) / nb_jobs;
401  const int slice_end = (height * (jobnr+1)) / nb_jobs;
402  int x, y;
403 
404  double values[VAR_VARS_NB];
405  values[VAR_W] = geq->values[VAR_W];
406  values[VAR_H] = geq->values[VAR_H];
407  values[VAR_N] = geq->values[VAR_N];
408  values[VAR_SW] = geq->values[VAR_SW];
409  values[VAR_SH] = geq->values[VAR_SH];
410  values[VAR_T] = geq->values[VAR_T];
411 
412  if (geq->bps == 8) {
413  uint8_t *ptr = geq->dst + linesize * slice_start;
414  for (y = slice_start; y < slice_end; y++) {
415  values[VAR_Y] = y;
416 
417  for (x = 0; x < width; x++) {
418  values[VAR_X] = x;
419  ptr[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
420  }
421  ptr += linesize;
422  }
423  } else if (geq->bps <= 16) {
424  uint16_t *ptr16 = geq->dst16 + (linesize/2) * slice_start;
425  for (y = slice_start; y < slice_end; y++) {
426  values[VAR_Y] = y;
427  for (x = 0; x < width; x++) {
428  values[VAR_X] = x;
429  ptr16[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
430  }
431  ptr16 += linesize/2;
432  }
433  } else {
434  float *ptr32 = geq->dst32 + (linesize/4) * slice_start;
435  for (y = slice_start; y < slice_end; y++) {
436  values[VAR_Y] = y;
437  for (x = 0; x < width; x++) {
438  values[VAR_X] = x;
439  ptr32[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
440  }
441  ptr32 += linesize/4;
442  }
443  }
444 
445  return 0;
446 }
447 
449 {
450  int plane;
451  AVFilterContext *ctx = inlink->dst;
452  const int nb_threads = FFMIN(MAX_NB_THREADS, ff_filter_get_nb_threads(ctx));
453  GEQContext *geq = ctx->priv;
454  AVFilterLink *outlink = inlink->dst->outputs[0];
455  AVFrame *out;
456 
457  geq->values[VAR_N] = inlink->frame_count_out,
458  geq->values[VAR_T] = in->pts == AV_NOPTS_VALUE ? NAN : in->pts * av_q2d(inlink->time_base),
459 
460  geq->picref = in;
461  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
462  if (!out) {
463  av_frame_free(&in);
464  return AVERROR(ENOMEM);
465  }
467 
468  for (plane = 0; plane < geq->planes && out->data[plane]; plane++) {
469  const int width = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(inlink->w, geq->hsub) : inlink->w;
470  const int height = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(inlink->h, geq->vsub) : inlink->h;
471  const int linesize = out->linesize[plane];
472  ThreadData td;
473 
474  geq->dst = out->data[plane];
475  geq->dst16 = (uint16_t*)out->data[plane];
476  geq->dst32 = (float*)out->data[plane];
477 
478  geq->values[VAR_W] = width;
479  geq->values[VAR_H] = height;
480  geq->values[VAR_SW] = width / (double)inlink->w;
481  geq->values[VAR_SH] = height / (double)inlink->h;
482 
483  td.width = width;
484  td.height = height;
485  td.plane = plane;
486  td.linesize = linesize;
487 
488  if (geq->needs_sum[plane])
489  calculate_sums(geq, plane, width, height);
490 
492  NULL, FFMIN(height, nb_threads));
493  }
494 
495  av_frame_free(&geq->picref);
496  return ff_filter_frame(outlink, out);
497 }
498 
500 {
501  int i;
502  GEQContext *geq = ctx->priv;
503 
504  for (i = 0; i < NB_PLANES; i++)
505  for (int j = 0; j < MAX_NB_THREADS; j++)
506  av_expr_free(geq->e[i][j]);
507  for (i = 0; i < NB_PLANES; i++)
508  av_freep(&geq->pixel_sums);
509 }
510 
511 static const AVFilterPad geq_inputs[] = {
512  {
513  .name = "default",
514  .type = AVMEDIA_TYPE_VIDEO,
515  .config_props = geq_config_props,
516  .filter_frame = geq_filter_frame,
517  },
518 };
519 
521  .name = "geq",
522  .description = NULL_IF_CONFIG_SMALL("Apply generic equation to each pixel."),
523  .priv_size = sizeof(GEQContext),
524  .init = geq_init,
525  .uninit = geq_uninit,
529  .priv_class = &geq_class,
531 };
VAR_N
@ VAR_N
Definition: vf_geq.c:48
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:112
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:526
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:505
td
#define td
Definition: regdef.h:70
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
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
getpix
static double getpix(void *priv, double x, double y, int plane)
Definition: vf_geq.c:100
var_names
static const char *const var_names[]
Definition: vf_geq.c:47
out
FILE * out
Definition: movenc.c:54
VAR_X
@ VAR_X
Definition: vf_geq.c:48
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:241
geq_query_formats
static int geq_query_formats(AVFilterContext *ctx)
Definition: vf_geq.c:333
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1007
geq_uninit
static av_cold void geq_uninit(AVFilterContext *ctx)
Definition: vf_geq.c:499
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2968
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
av_asprintf
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:115
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:100
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:518
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
VAR_W
@ VAR_W
Definition: vf_geq.c:48
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:452
AVFrame::width
int width
Definition: frame.h:412
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:525
w
uint8_t w
Definition: llviddspenc.c:38
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:520
AVOption
AVOption.
Definition: opt.h:251
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:159
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:482
av_expr_count_func
int av_expr_count_func(AVExpr *e, unsigned *counter, int size, int arg)
Track the presence of user provided functions and their number of occurrences in a parsed expression.
Definition: eval.c:788
NB_INTERP
@ NB_INTERP
Definition: vf_geq.c:44
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:170
GEQContext::planes
int planes
number of planes
Definition: vf_geq.c:60
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:521
lumsum
static double lumsum(void *priv, double x, double y)
Definition: vf_geq.c:245
crsub
static double crsub(void *priv, double x, double y)
Definition: vf_geq.c:247
func2_names
static const char *const func2_names[]
Definition: af_afftfilt.c:98
ThreadData::width
int width
Definition: vf_avgblur.c:64
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:462
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:361
GEQContext::pixel_sums
double * pixel_sums[NB_PLANES]
Definition: vf_geq.c:65
formats.h
av_expr_parse
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:711
geq_config_props
static int geq_config_props(AVFilterLink *inlink)
Definition: vf_geq.c:371
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:517
GEQContext::interpolation
int interpolation
Definition: vf_geq.c:61
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:500
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:498
G
@ G
Definition: vf_geq.c:69
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:527
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:480
InterpolationMethods
InterpolationMethods
Definition: vf_geq.c:41
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:466
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:359
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:485
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: vvcdec.c:659
avassert.h
lrint
#define lrint
Definition: tablegen.h:53
func2
static double(*const func2[])(void *, double, double)
Definition: af_afftfilt.c:99
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:494
MAX_NB_THREADS
#define MAX_NB_THREADS
Definition: vf_geq.c:38
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
OFFSET
#define OFFSET(x)
Definition: vf_geq.c:71
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:502
ThreadData::plane
int plane
Definition: vf_blend.c:58
width
#define width
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:503
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
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:495
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
ThreadData::height
int height
Definition: vf_avgblur.c:63
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:1717
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
NB_PLANES
#define NB_PLANES
Definition: vf_geq.c:39
VAR_Y
@ VAR_Y
Definition: vf_geq.c:48
GEQContext::vsub
int vsub
chroma subsampling
Definition: vf_geq.c:59
ThreadData::linesize
int linesize
Definition: vf_avgblur.c:67
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:873
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:304
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:479
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:493
ctx
AVFormatContext * ctx
Definition: movenc.c:48
xi
#define xi(width, name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:407
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:793
geq_options
static const AVOption geq_options[]
Definition: vf_geq.c:74
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:465
AVExpr
Definition: eval.c:159
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
AV_PIX_FMT_GRAYF32
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:515
NAN
#define NAN
Definition: mathematics.h:115
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
alpha
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:243
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:463
B
@ B
Definition: vf_geq.c:69
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:501
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:736
INTERP_NEAREST
@ INTERP_NEAREST
Definition: vf_geq.c:42
getpix_integrate
static double getpix_integrate(void *priv, double x, double y, int plane)
Definition: vf_geq.c:225
GEQContext::picref
AVFrame * picref
current input buffer
Definition: vf_geq.c:54
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:484
calculate_sums
static int calculate_sums(GEQContext *geq, int plane, int w, int h)
Definition: vf_geq.c:158
double
double
Definition: af_crystalizer.c:131
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:483
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:497
INTERP_BILINEAR
@ INTERP_BILINEAR
Definition: vf_geq.c:43
cbsum
static double cbsum(void *priv, double x, double y)
Definition: vf_geq.c:246
GEQContext::bps
int bps
Definition: vf_geq.c:63
GEQContext::e
AVExpr * e[NB_PLANES][MAX_NB_THREADS]
expressions for each plane and thread
Definition: vf_geq.c:52
eval.h
f
f
Definition: af_crystalizer.c:121
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:365
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:106
AV_PIX_FMT_GBRPF32
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:512
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:487
VAR_SW
@ VAR_SW
Definition: vf_geq.c:48
GEQContext::values
double values[VAR_VARS_NB]
expression values
Definition: vf_geq.c:58
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:489
geq_init
static av_cold int geq_init(AVFilterContext *ctx)
Definition: vf_geq.c:250
height
#define height
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
V
@ V
Definition: vf_geq.c:69
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:522
FLAGS
#define FLAGS
Definition: vf_geq.c:72
A
@ A
Definition: vf_geq.c:69
interpolation
static int interpolation(DeclickChannel *c, const double *src, int ar_order, double *acoefficients, int *index, int nb_errors, double *auxiliary, double *interpolated)
Definition: af_adeclick.c:389
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:147
U
@ U
Definition: vf_geq.c:69
GEQContext
Definition: vf_geq.c:50
uninit
static void uninit(AVBSFContext *ctx)
Definition: pcm_rechunk.c:68
GEQContext::is_rgb
int is_rgb
Definition: vf_geq.c:62
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:245
lum
static double lum(void *priv, double x, double y)
Definition: vf_geq.c:240
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:499
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:814
VAR_SH
@ VAR_SH
Definition: vf_geq.c:48
ThreadData
Used for passing data between threads.
Definition: dsddec.c:69
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
GEQContext::expr_str
char * expr_str[4+3]
expression strings for each plane
Definition: vf_geq.c:53
GEQContext::dst
uint8_t * dst
reference pointer to the 8bits output
Definition: vf_geq.c:55
GEQContext::dst16
uint16_t * dst16
reference pointer to the 16bits output
Definition: vf_geq.c:56
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:481
VAR_H
@ VAR_H
Definition: vf_geq.c:48
AVFilter
Filter definition.
Definition: avfilter.h:166
R
@ R
Definition: vf_geq.c:69
ret
ret
Definition: filter_design.txt:187
GEQContext::needs_sum
int needs_sum[NB_PLANES]
Definition: vf_geq.c:66
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:519
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:486
VAR_T
@ VAR_T
Definition: vf_geq.c:48
GEQContext::hsub
int hsub
Definition: vf_geq.c:59
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:491
AVFrame::height
int height
Definition: frame.h:412
geq_filter_frame
static int geq_filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_geq.c:448
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AV_PIX_FMT_GBRAPF32
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:513
values
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 values
Definition: filter_design.txt:263
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:409
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(geq)
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_geq.c:48
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
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:270
desc
const char * desc
Definition: libsvtav1.c:83
alphasum
static double alphasum(void *priv, double x, double y)
Definition: vf_geq.c:248
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
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
yuv_pix_fmts
static enum AVPixelFormat yuv_pix_fmts[]
Definition: jpeg2000dec.c:177
cr
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:242
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
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
Y
@ Y
Definition: vf_geq.c:69
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:385
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
h
h
Definition: vp9dsp_template.c:2038
GEQContext::dst32
float * dst32
reference pointer to the 32bits output
Definition: vf_geq.c:57
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:492
rgb_pix_fmts
static enum AVPixelFormat rgb_pix_fmts[]
Definition: jpeg2000dec.c:175
avstring.h
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:464
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:134
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
slice_geq_filter
static int slice_geq_filter(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_geq.c:392
ff_vf_geq
const AVFilter ff_vf_geq
Definition: vf_geq.c:520
geq_inputs
static const AVFilterPad geq_inputs[]
Definition: vf_geq.c:511
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
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:490
getpix_integrate_internal
static double getpix_integrate_internal(GEQContext *geq, int x, int y, int plane, int w, int h)
Definition: vf_geq.c:206
av_clipd
av_clipd
Definition: af_crystalizer.c:131