FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/f_select.c
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 170 206 82.5%
Functions: 9 10 90.0%
Branches: 75 120 62.5%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2011 Stefano Sabatini
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 * filter for selecting which frame passes in the filterchain
24 */
25
26 #include "config_components.h"
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/eval.h"
30 #include "libavutil/fifo.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "avfilter.h"
36 #include "audio.h"
37 #include "filters.h"
38 #include "formats.h"
39 #include "video.h"
40 #include "scene_sad.h"
41
42 static const char *const var_names[] = {
43 "TB", ///< timebase
44
45 "pts", ///< original pts in the file of the frame
46 "start_pts", ///< first PTS in the stream, expressed in TB units
47 "prev_pts", ///< previous frame PTS
48 "prev_selected_pts", ///< previous selected frame PTS
49
50 "t", ///< timestamp expressed in seconds
51 "start_t", ///< first PTS in the stream, expressed in seconds
52 "prev_t", ///< previous frame time
53 "prev_selected_t", ///< previously selected time
54
55 "pict_type", ///< the type of picture in the movie
56 "I",
57 "P",
58 "B",
59 "S",
60 "SI",
61 "SP",
62 "BI",
63 "PICT_TYPE_I",
64 "PICT_TYPE_P",
65 "PICT_TYPE_B",
66 "PICT_TYPE_S",
67 "PICT_TYPE_SI",
68 "PICT_TYPE_SP",
69 "PICT_TYPE_BI",
70
71 "interlace_type", ///< the frame interlace type
72 "PROGRESSIVE",
73 "TOPFIRST",
74 "BOTTOMFIRST",
75
76 "consumed_samples_n",///< number of samples consumed by the filter (only audio)
77 "samples_n", ///< number of samples in the current frame (only audio)
78 "sample_rate", ///< sample rate (only audio)
79
80 "n", ///< frame number (starting from zero)
81 "selected_n", ///< selected frame number (starting from zero)
82 "prev_selected_n", ///< number of the last selected frame
83
84 "key", ///< tell if the frame is a key frame
85
86 "scene",
87
88 "concatdec_select", ///< frame is within the interval set by the concat demuxer
89
90 "ih", ///< ih: Represents the height of the input video frame.
91 "iw", ///< iw: Represents the width of the input video frame.
92
93 "view",
94
95 NULL
96 };
97
98 enum var_name {
99 VAR_TB,
100
101 VAR_PTS,
102 VAR_START_PTS,
103 VAR_PREV_PTS,
104 VAR_PREV_SELECTED_PTS,
105
106 VAR_T,
107 VAR_START_T,
108 VAR_PREV_T,
109 VAR_PREV_SELECTED_T,
110
111 VAR_PICT_TYPE,
112 VAR_I,
113 VAR_P,
114 VAR_B,
115 VAR_S,
116 VAR_SI,
117 VAR_SP,
118 VAR_BI,
119 VAR_PICT_TYPE_I,
120 VAR_PICT_TYPE_P,
121 VAR_PICT_TYPE_B,
122 VAR_PICT_TYPE_S,
123 VAR_PICT_TYPE_SI,
124 VAR_PICT_TYPE_SP,
125 VAR_PICT_TYPE_BI,
126
127 VAR_INTERLACE_TYPE,
128 VAR_INTERLACE_TYPE_P,
129 VAR_INTERLACE_TYPE_T,
130 VAR_INTERLACE_TYPE_B,
131
132 VAR_CONSUMED_SAMPLES_N,
133 VAR_SAMPLES_N,
134 VAR_SAMPLE_RATE,
135
136 VAR_N,
137 VAR_SELECTED_N,
138 VAR_PREV_SELECTED_N,
139
140 VAR_KEY,
141
142 VAR_SCENE,
143
144 VAR_CONCATDEC_SELECT,
145
146 VAR_IH,
147 VAR_IW,
148
149 VAR_VIEW,
150
151 VAR_VARS_NB
152 };
153
154 typedef struct SelectContext {
155 const AVClass *class;
156 char *expr_str;
157 AVExpr *expr;
158 double var_values[VAR_VARS_NB];
159 int bitdepth;
160 int nb_planes;
161 ptrdiff_t width[4];
162 ptrdiff_t height[4];
163 int do_scene_detect; ///< 1 if the expression requires scene detection variables, 0 otherwise
164 ff_scene_sad_fn sad; ///< Sum of the absolute difference function (scene detect only)
165 double prev_mafd; ///< previous MAFD (scene detect only)
166 AVFrame *prev_picref; ///< previous frame (scene detect only)
167 double select;
168 int select_out; ///< mark the selected output pad index
169 int nb_outputs;
170 } SelectContext;
171
172 #define OFFSET(x) offsetof(SelectContext, x)
173 #define DEFINE_OPTIONS(filt_name, FLAGS) \
174 static const AVOption filt_name##_options[] = { \
175 { "expr", "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \
176 { "e", "set an expression to use for selecting frames", OFFSET(expr_str), AV_OPT_TYPE_STRING, { .str = "1" }, .flags=FLAGS }, \
177 { "outputs", "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \
178 { "n", "set the number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags=FLAGS }, \
179 { NULL } \
180 }
181
182 8 static av_cold int init(AVFilterContext *ctx)
183 {
184 8 SelectContext *select = ctx->priv;
185 int i, ret;
186
187
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8 if ((ret = av_expr_parse(&select->expr, select->expr_str,
188 var_names, NULL, NULL, NULL, NULL, 0, ctx)) < 0) {
189 av_log(ctx, AV_LOG_ERROR, "Error while parsing expression '%s'\n",
190 select->expr_str);
191 return ret;
192 }
193 8 select->do_scene_detect = !!strstr(select->expr_str, "scene");
194
195
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21 for (i = 0; i < select->nb_outputs; i++) {
196 13 AVFilterPad pad = { 0 };
197
198 13 pad.name = av_asprintf("output%d", i);
199
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13 if (!pad.name)
200 return AVERROR(ENOMEM);
201 13 pad.type = ctx->filter->inputs[0].type;
202
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13 if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
203 return ret;
204 }
205
206 8 return 0;
207 }
208
209 #define INTERLACE_TYPE_P 0
210 #define INTERLACE_TYPE_T 1
211 #define INTERLACE_TYPE_B 2
212
213 5 static int config_input(AVFilterLink *inlink)
214 {
215 5 SelectContext *select = inlink->dst->priv;
216 5 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
217 15 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
218
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9 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
219
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4 desc->nb_components >= 3;
220
221 5 select->bitdepth = desc->comp[0].depth;
222
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5 select->nb_planes = is_yuv ? 1 : av_pix_fmt_count_planes(inlink->format);
223
224
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10 for (int plane = 0; plane < select->nb_planes; plane++) {
225 5 ptrdiff_t line_size = av_image_get_linesize(inlink->format, inlink->w, plane);
226 5 int vsub = desc->log2_chroma_h;
227
228 5 select->width[plane] = line_size >> (select->bitdepth > 8);
229
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5 select->height[plane] = plane == 1 || plane == 2 ? AV_CEIL_RSHIFT(inlink->h, vsub) : inlink->h;
230 }
231
232 5 select->var_values[VAR_N] = 0.0;
233 5 select->var_values[VAR_SELECTED_N] = 0.0;
234
235 5 select->var_values[VAR_TB] = av_q2d(inlink->time_base);
236
237 5 select->var_values[VAR_PREV_SELECTED_N] = NAN;
238 5 select->var_values[VAR_PREV_PTS] = NAN;
239 5 select->var_values[VAR_PREV_SELECTED_PTS] = NAN;
240 5 select->var_values[VAR_PREV_SELECTED_T] = NAN;
241 5 select->var_values[VAR_PREV_T] = NAN;
242 5 select->var_values[VAR_START_PTS] = NAN;
243 5 select->var_values[VAR_START_T] = NAN;
244
245 5 select->var_values[VAR_I] = AV_PICTURE_TYPE_I;
246 5 select->var_values[VAR_P] = AV_PICTURE_TYPE_P;
247 5 select->var_values[VAR_B] = AV_PICTURE_TYPE_B;
248 5 select->var_values[VAR_SI] = AV_PICTURE_TYPE_SI;
249 5 select->var_values[VAR_SP] = AV_PICTURE_TYPE_SP;
250 5 select->var_values[VAR_BI] = AV_PICTURE_TYPE_BI;
251 5 select->var_values[VAR_PICT_TYPE_I] = AV_PICTURE_TYPE_I;
252 5 select->var_values[VAR_PICT_TYPE_P] = AV_PICTURE_TYPE_P;
253 5 select->var_values[VAR_PICT_TYPE_B] = AV_PICTURE_TYPE_B;
254 5 select->var_values[VAR_PICT_TYPE_SI] = AV_PICTURE_TYPE_SI;
255 5 select->var_values[VAR_PICT_TYPE_SP] = AV_PICTURE_TYPE_SP;
256 5 select->var_values[VAR_PICT_TYPE_BI] = AV_PICTURE_TYPE_BI;
257
258 5 select->var_values[VAR_INTERLACE_TYPE_P] = INTERLACE_TYPE_P;
259 5 select->var_values[VAR_INTERLACE_TYPE_T] = INTERLACE_TYPE_T;
260 5 select->var_values[VAR_INTERLACE_TYPE_B] = INTERLACE_TYPE_B;
261
262 5 select->var_values[VAR_PICT_TYPE] = NAN;
263 5 select->var_values[VAR_INTERLACE_TYPE] = NAN;
264 5 select->var_values[VAR_SCENE] = NAN;
265 5 select->var_values[VAR_CONSUMED_SAMPLES_N] = NAN;
266 5 select->var_values[VAR_SAMPLES_N] = NAN;
267
268 5 select->var_values[VAR_IH] = NAN;
269 5 select->var_values[VAR_IW] = NAN;
270
271 5 select->var_values[VAR_SAMPLE_RATE] =
272
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5 inlink->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN;
273
274
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5 if (CONFIG_SELECT_FILTER && select->do_scene_detect) {
275 1 select->sad = ff_scene_sad_get_fn(select->bitdepth);
276
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1 if (!select->sad)
277 return AVERROR(EINVAL);
278 }
279 5 return 0;
280 }
281
282 1308 static double get_scene_score(AVFilterContext *ctx, AVFrame *frame)
283 {
284 1308 double ret = 0;
285 1308 SelectContext *select = ctx->priv;
286 1308 AVFrame *prev_picref = select->prev_picref;
287
288
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1308 if (prev_picref &&
289
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1307 frame->height == prev_picref->height &&
290
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1307 frame->width == prev_picref->width) {
291 1307 uint64_t sad = 0;
292 double mafd, diff;
293 1307 uint64_t count = 0;
294
295
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2614 for (int plane = 0; plane < select->nb_planes; plane++) {
296 uint64_t plane_sad;
297 1307 select->sad(prev_picref->data[plane], prev_picref->linesize[plane],
298 1307 frame->data[plane], frame->linesize[plane],
299 select->width[plane], select->height[plane], &plane_sad);
300 1307 sad += plane_sad;
301 1307 count += select->width[plane] * select->height[plane];
302 }
303
304 1307 mafd = (double)sad / count / (1ULL << (select->bitdepth - 8));
305 1307 diff = fabs(mafd - select->prev_mafd);
306
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1307 ret = av_clipf(FFMIN(mafd, diff) / 100., 0, 1);
307 1307 select->prev_mafd = mafd;
308 1307 av_frame_free(&prev_picref);
309 }
310 1308 select->prev_picref = av_frame_clone(frame);
311 1308 return ret;
312 }
313
314 1958 static double get_concatdec_select(AVFrame *frame, int64_t pts)
315 {
316 1958 AVDictionary *metadata = frame->metadata;
317 1958 AVDictionaryEntry *start_time_entry = av_dict_get(metadata, "lavf.concatdec.start_time", NULL, 0);
318 1958 AVDictionaryEntry *duration_entry = av_dict_get(metadata, "lavf.concatdec.duration", NULL, 0);
319
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1958 if (start_time_entry) {
320 int64_t start_time = strtoll(start_time_entry->value, NULL, 10);
321 if (pts >= start_time) {
322 if (duration_entry) {
323 int64_t duration = strtoll(duration_entry->value, NULL, 10);
324 if (pts < start_time + duration)
325 return -1;
326 else
327 return 0;
328 }
329 return -1;
330 }
331 return 0;
332 }
333 1958 return NAN;
334 }
335
336 1958 static void select_frame(AVFilterContext *ctx, AVFrame *frame)
337 {
338 1958 SelectContext *select = ctx->priv;
339 1958 AVFilterLink *inlink = ctx->inputs[0];
340 1958 FilterLink *inl = ff_filter_link(inlink);
341 const AVFrameSideData *sd;
342 double res;
343
344
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1958 if (isnan(select->var_values[VAR_START_PTS]))
345
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5 select->var_values[VAR_START_PTS] = TS2D(frame->pts);
346
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1958 if (isnan(select->var_values[VAR_START_T]))
347
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5 select->var_values[VAR_START_T] = TS2D(frame->pts) * av_q2d(inlink->time_base);
348
349 1958 select->var_values[VAR_N ] = inl->frame_count_out - 1;
350
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1958 select->var_values[VAR_PTS] = TS2D(frame->pts);
351
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1958 select->var_values[VAR_T ] = TS2D(frame->pts) * av_q2d(inlink->time_base);
352
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1958 select->var_values[VAR_KEY] = !!(frame->flags & AV_FRAME_FLAG_KEY);
353 1958 select->var_values[VAR_CONCATDEC_SELECT] = get_concatdec_select(frame, av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q));
354
355
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1958 switch (inlink->type) {
356 case AVMEDIA_TYPE_AUDIO:
357 select->var_values[VAR_SAMPLES_N] = frame->nb_samples;
358 break;
359
360 1958 case AVMEDIA_TYPE_VIDEO:
361 1958 select->var_values[VAR_IH] = frame->height;
362 1958 select->var_values[VAR_IW] = frame->width;
363
364 1958 select->var_values[VAR_INTERLACE_TYPE] =
365
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1958 !(frame->flags & AV_FRAME_FLAG_INTERLACED) ? INTERLACE_TYPE_P :
366 (frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? INTERLACE_TYPE_T : INTERLACE_TYPE_B;
367 1958 select->var_values[VAR_PICT_TYPE] = frame->pict_type;
368
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1958 if (select->do_scene_detect) {
369 char buf[32];
370 1308 select->var_values[VAR_SCENE] = get_scene_score(ctx, frame);
371 // TODO: document metadata
372 1308 snprintf(buf, sizeof(buf), "%f", select->var_values[VAR_SCENE]);
373 1308 av_dict_set(&frame->metadata, "lavfi.scene_score", buf, 0);
374 }
375
376 1958 sd = av_frame_side_data_get(frame->side_data, frame->nb_side_data,
377 AV_FRAME_DATA_VIEW_ID);
378
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1958 select->var_values[VAR_VIEW] = sd ? *(int*)sd->data : NAN;
379 1958 break;
380 }
381
382 1958 select->select = res = av_expr_eval(select->expr, select->var_values, NULL);
383 1958 av_log(inlink->dst, AV_LOG_DEBUG,
384 "n:%f pts:%f t:%f key:%d",
385 select->var_values[VAR_N],
386 select->var_values[VAR_PTS],
387 select->var_values[VAR_T],
388 1958 !!(frame->flags & AV_FRAME_FLAG_KEY));
389
390
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1958 switch (inlink->type) {
391 1958 case AVMEDIA_TYPE_VIDEO:
392 1958 av_log(inlink->dst, AV_LOG_DEBUG, " interlace_type:%c pict_type:%c scene:%f",
393
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1958 !(frame->flags & AV_FRAME_FLAG_INTERLACED) ? 'P' :
394 (frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? 'T' : 'B',
395 1958 av_get_picture_type_char(frame->pict_type),
396 select->var_values[VAR_SCENE]);
397 1958 break;
398 case AVMEDIA_TYPE_AUDIO:
399 av_log(inlink->dst, AV_LOG_DEBUG, " samples_n:%d consumed_samples_n:%f",
400 frame->nb_samples,
401 select->var_values[VAR_CONSUMED_SAMPLES_N]);
402 break;
403 }
404
405
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1958 if (res == 0) {
406 1355 select->select_out = -1; /* drop */
407
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603 } else if (isnan(res) || res < 0) {
408 select->select_out = 0; /* first output */
409 } else {
410
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603 select->select_out = FFMIN(ceilf(res)-1, select->nb_outputs-1); /* other outputs */
411 }
412
413 1958 av_log(inlink->dst, AV_LOG_DEBUG, " -> select:%f select_out:%d\n", res, select->select_out);
414
415
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1958 if (res) {
416 603 select->var_values[VAR_PREV_SELECTED_N] = select->var_values[VAR_N];
417 603 select->var_values[VAR_PREV_SELECTED_PTS] = select->var_values[VAR_PTS];
418 603 select->var_values[VAR_PREV_SELECTED_T] = select->var_values[VAR_T];
419 603 select->var_values[VAR_SELECTED_N] += 1.0;
420
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603 if (inlink->type == AVMEDIA_TYPE_AUDIO)
421 select->var_values[VAR_CONSUMED_SAMPLES_N] += frame->nb_samples;
422 }
423
424 1958 select->var_values[VAR_PREV_PTS] = select->var_values[VAR_PTS];
425 1958 select->var_values[VAR_PREV_T] = select->var_values[VAR_T];
426 1958 }
427
428 2626 static int activate(AVFilterContext *ctx)
429 {
430 2626 SelectContext *select = ctx->priv;
431 2626 AVFilterLink *inlink = ctx->inputs[0];
432 AVFrame *in;
433 2626 int nb_eofs = 0;
434 int ret;
435
436
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7406 for (int i = 0; i < ctx->nb_outputs; i++)
437 4780 nb_eofs += ff_outlink_get_status(ctx->outputs[i]) == AVERROR_EOF;
438
439
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2626 if (nb_eofs == ctx->nb_outputs) {
440 ff_inlink_set_status(inlink, AVERROR_EOF);
441 return 0;
442 }
443
444
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3981 while ((ret = ff_inlink_consume_frame(inlink, &in))) {
445
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1958 if (ret < 0)
446 return ret;
447 1958 select_frame(ctx, in);
448
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1958 if (select->select && !ff_outlink_get_status(ctx->outputs[select->select_out]))
449 603 return ff_filter_frame(ctx->outputs[select->select_out], in);
450 1355 av_frame_free(&in);
451 };
452
453
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2031 FF_FILTER_FORWARD_STATUS_ALL(inlink, ctx);
454
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2794 FF_FILTER_FORWARD_WANTED_ANY(ctx, inlink);
455
456 1 return FFERROR_NOT_READY;
457 }
458
459 8 static av_cold void uninit(AVFilterContext *ctx)
460 {
461 8 SelectContext *select = ctx->priv;
462
463 8 av_expr_free(select->expr);
464 8 select->expr = NULL;
465
466
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8 if (select->do_scene_detect) {
467 1 av_frame_free(&select->prev_picref);
468 }
469 8 }
470
471 #if CONFIG_ASELECT_FILTER
472
473 DEFINE_OPTIONS(aselect, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
474 AVFILTER_DEFINE_CLASS(aselect);
475
476 static av_cold int aselect_init(AVFilterContext *ctx)
477 {
478 SelectContext *select = ctx->priv;
479 int ret;
480
481 if ((ret = init(ctx)) < 0)
482 return ret;
483
484 if (select->do_scene_detect) {
485 av_log(ctx, AV_LOG_ERROR, "Scene detection is ignored in aselect filter\n");
486 return AVERROR(EINVAL);
487 }
488
489 return 0;
490 }
491
492 static const AVFilterPad avfilter_af_aselect_inputs[] = {
493 {
494 .name = "default",
495 .type = AVMEDIA_TYPE_AUDIO,
496 .config_props = config_input,
497 },
498 };
499
500 const FFFilter ff_af_aselect = {
501 .p.name = "aselect",
502 .p.description = NULL_IF_CONFIG_SMALL("Select audio frames to pass in output."),
503 .p.priv_class = &aselect_class,
504 .p.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
505 .init = aselect_init,
506 .uninit = uninit,
507 .priv_size = sizeof(SelectContext),
508 FILTER_INPUTS(avfilter_af_aselect_inputs),
509 };
510 #endif /* CONFIG_ASELECT_FILTER */
511
512 #if CONFIG_SELECT_FILTER
513
514 5 static int query_formats(const AVFilterContext *ctx,
515 AVFilterFormatsConfig **cfg_in,
516 AVFilterFormatsConfig **cfg_out)
517 {
518 5 const SelectContext *select = ctx->priv;
519
520
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5 if (select->do_scene_detect) {
521 static const enum AVPixelFormat pix_fmts[] = {
522 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, AV_PIX_FMT_RGBA,
523 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, AV_PIX_FMT_GRAY8,
524 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
525 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
526 AV_PIX_FMT_YUV420P10,
527 AV_PIX_FMT_NONE
528 };
529 1 return ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, pix_fmts);
530 }
531 4 return 0;
532 }
533
534 DEFINE_OPTIONS(select, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM);
535 AVFILTER_DEFINE_CLASS(select);
536
537 8 static av_cold int select_init(AVFilterContext *ctx)
538 {
539 int ret;
540
541
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8 if ((ret = init(ctx)) < 0)
542 return ret;
543
544 8 return 0;
545 }
546
547 static const AVFilterPad avfilter_vf_select_inputs[] = {
548 {
549 .name = "default",
550 .type = AVMEDIA_TYPE_VIDEO,
551 .config_props = config_input,
552 },
553 };
554
555 const FFFilter ff_vf_select = {
556 .p.name = "select",
557 .p.description = NULL_IF_CONFIG_SMALL("Select video frames to pass in output."),
558 .p.priv_class = &select_class,
559 .p.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS | AVFILTER_FLAG_METADATA_ONLY,
560 .init = select_init,
561 .uninit = uninit,
562 .activate = activate,
563 .priv_size = sizeof(SelectContext),
564 FILTER_INPUTS(avfilter_vf_select_inputs),
565 FILTER_QUERY_FUNC2(query_formats),
566 };
567 #endif /* CONFIG_SELECT_FILTER */
568