FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/avfilter.c
Date: 2026-09-04 16:49:34
Exec Total Coverage
Lines: 677 853 79.4%
Functions: 58 66 87.9%
Branches: 367 516 71.1%
Line Branch Exec Source
1 /*
2 * filter layer
3 * Copyright (c) 2007 Bobby Bingham
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 #include "libavutil/avassert.h"
23 #include "libavutil/avstring.h"
24 #include "libavutil/bprint.h"
25 #include "libavutil/buffer.h"
26 #include "libavutil/channel_layout.h"
27 #include "libavutil/common.h"
28 #include "libavutil/eval.h"
29 #include "libavutil/frame.h"
30 #include "libavutil/hwcontext.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/rational.h"
36 #include "libavutil/samplefmt.h"
37
38 #include "audio.h"
39 #include "avfilter.h"
40 #include "avfilter_internal.h"
41 #include "filters.h"
42 #include "formats.h"
43 #include "framequeue.h"
44 #include "framepool.h"
45 #include "video.h"
46
47 1729185 static void tlog_ref(void *ctx, AVFrame *ref, int end)
48 {
49 #ifdef TRACE
50 ff_tlog(ctx,
51 "ref[%p buf:%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64,
52 ref, ref->buf, ref->data[0],
53 ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
54 ref->pts);
55
56 if (ref->width) {
57 ff_tlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
58 ref->sample_aspect_ratio.num, ref->sample_aspect_ratio.den,
59 ref->width, ref->height,
60 !(ref->flags & AV_FRAME_FLAG_INTERLACED) ? 'P' : /* Progressive */
61 (ref->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? 'T' : 'B', /* Top / Bottom */
62 !!(ref->flags & AV_FRAME_FLAG_KEY),
63 av_get_picture_type_char(ref->pict_type));
64 }
65 if (ref->nb_samples) {
66 AVBPrint bprint;
67
68 av_bprint_init(&bprint, 1, AV_BPRINT_SIZE_UNLIMITED);
69 av_channel_layout_describe_bprint(&ref->ch_layout, &bprint);
70 ff_tlog(ctx, " cl:%s n:%d r:%d",
71 bprint.str,
72 ref->nb_samples,
73 ref->sample_rate);
74 av_bprint_finalize(&bprint, NULL);
75 }
76
77 ff_tlog(ctx, "]%s", end ? "\n" : "");
78 #endif
79 1729185 }
80
81 ✗ static void command_queue_pop(AVFilterContext *filter)
82 {
83 ✗ FFFilterContext *ctxi = fffilterctx(filter);
84 ✗ AVFilterCommand *c = ctxi->command_queue;
85 ✗ av_freep(&c->arg);
86 ✗ av_freep(&c->command);
87 ✗ ctxi->command_queue = c->next;
88 ✗ av_free(c);
89 ✗ }
90
91 /**
92 * Append a new pad.
93 *
94 * @param count Pointer to the number of pads in the list
95 * @param pads Pointer to the pointer to the beginning of the list of pads
96 * @param links Pointer to the pointer to the beginning of the list of links
97 * @param newpad The new pad to add. A copy is made when adding.
98 * @return >= 0 in case of success, a negative AVERROR code on error
99 */
100 588 static int append_pad(unsigned *count, AVFilterPad **pads,
101 AVFilterLink ***links, AVFilterPad *newpad)
102 {
103 AVFilterLink **newlinks;
104 AVFilterPad *newpads;
105 588 unsigned idx = *count;
106
107 588 newpads = av_realloc_array(*pads, idx + 1, sizeof(*newpads));
108 588 newlinks = av_realloc_array(*links, idx + 1, sizeof(*newlinks));
109
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 588 if (newpads)
110 588 *pads = newpads;
111
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 588 if (newlinks)
112 588 *links = newlinks;
113
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 588 if (!newpads || !newlinks) {
114 ✗ if (newpad->flags & AVFILTERPAD_FLAG_FREE_NAME)
115 ✗ av_freep(&newpad->name);
116 ✗ return AVERROR(ENOMEM);
117 }
118
119 588 memcpy(*pads + idx, newpad, sizeof(AVFilterPad));
120 588 (*links)[idx] = NULL;
121
122 588 (*count)++;
123
124 588 return 0;
125 }
126
127 293 int ff_append_inpad(AVFilterContext *f, AVFilterPad *p)
128 {
129 293 return append_pad(&f->nb_inputs, &f->input_pads, &f->inputs, p);
130 }
131
132 272 int ff_append_inpad_free_name(AVFilterContext *f, AVFilterPad *p)
133 {
134 272 p->flags |= AVFILTERPAD_FLAG_FREE_NAME;
135 272 return ff_append_inpad(f, p);
136 }
137
138 295 int ff_append_outpad(AVFilterContext *f, AVFilterPad *p)
139 {
140 295 return append_pad(&f->nb_outputs, &f->output_pads, &f->outputs, p);
141 }
142
143 153 int ff_append_outpad_free_name(AVFilterContext *f, AVFilterPad *p)
144 {
145 153 p->flags |= AVFILTERPAD_FLAG_FREE_NAME;
146 153 return ff_append_outpad(f, p);
147 }
148
149 47903 int avfilter_link(AVFilterContext *src, unsigned srcpad,
150 AVFilterContext *dst, unsigned dstpad)
151 {
152 FilterLinkInternal *li;
153 AVFilterLink *link;
154
155
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 47903 av_assert0(src->graph);
156
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 47903 av_assert0(dst->graph);
157
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 47903 av_assert0(src->graph == dst->graph);
158
159
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 47903 if (src->nb_outputs <= srcpad || dst->nb_inputs <= dstpad ||
160
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 47903 src->outputs[srcpad] || dst->inputs[dstpad])
161 ✗ return AVERROR(EINVAL);
162
163
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 47903 if (!(fffilterctx(src)->state_flags & AV_CLASS_STATE_INITIALIZED) ||
164
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 47903 !(fffilterctx(dst)->state_flags & AV_CLASS_STATE_INITIALIZED)) {
165 ✗ av_log(src, AV_LOG_ERROR, "Filters must be initialized before linking.\n");
166 ✗ return AVERROR(EINVAL);
167 }
168
169
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 47903 if (src->output_pads[srcpad].type != dst->input_pads[dstpad].type) {
170 ✗ av_log(src, AV_LOG_ERROR,
171 "Media type mismatch between the '%s' filter output pad %d (%s) and the '%s' filter input pad %d (%s)\n",
172 ✗ src->name, srcpad, (char *)av_x_if_null(av_get_media_type_string(src->output_pads[srcpad].type), "?"),
173 ✗ dst->name, dstpad, (char *)av_x_if_null(av_get_media_type_string(dst-> input_pads[dstpad].type), "?"));
174 ✗ return AVERROR(EINVAL);
175 }
176
177 47903 li = av_mallocz(sizeof(*li));
178
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 47903 if (!li)
179 ✗ return AVERROR(ENOMEM);
180 47903 link = &li->l.pub;
181
182 47903 src->outputs[srcpad] = dst->inputs[dstpad] = link;
183
184 47903 link->src = src;
185 47903 link->dst = dst;
186 47903 link->srcpad = &src->output_pads[srcpad];
187 47903 link->dstpad = &dst->input_pads[dstpad];
188 47903 link->type = src->output_pads[srcpad].type;
189 47903 li->l.graph = src->graph;
190 av_assert0(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
191 47903 link->format = -1;
192 47903 link->colorspace = AVCOL_SPC_UNSPECIFIED;
193 47903 ff_framequeue_init(&li->fifo, &fffiltergraph(src->graph)->frame_queues);
194
195 47903 return 0;
196 }
197
198 48035 static void link_free(AVFilterLink **link)
199 {
200 FilterLinkInternal *li;
201
202
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 48035 if (!*link)
203 ✗ return;
204 48035 li = ff_link_internal(*link);
205
206 48035 ff_framequeue_free(&li->fifo);
207 48035 ff_frame_pool_uninit(&li->frame_pool);
208 48035 av_channel_layout_uninit(&(*link)->ch_layout);
209 48035 av_frame_side_data_free(&(*link)->side_data, &(*link)->nb_side_data);
210
211 48035 av_buffer_unref(&li->l.hw_frames_ctx);
212
213 48035 av_freep(link);
214 }
215
216 1741028 static void update_link_current_pts(FilterLinkInternal *li, int64_t pts)
217 {
218 1741028 AVFilterLink *const link = &li->l.pub;
219
220
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 1741028 if (pts == AV_NOPTS_VALUE)
221 5 return;
222 1741023 li->l.current_pts = pts;
223 1741023 li->l.current_pts_us = av_rescale_q(pts, link->time_base, AV_TIME_BASE_Q);
224 /* TODO use duration */
225
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 1741023 if (li->l.graph && li->age_index >= 0)
226 469380 ff_avfilter_graph_update_heap(li->l.graph, li);
227 }
228
229 4315573 void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
230 {
231 4315573 FFFilterContext *ctxi = fffilterctx(filter);
232 4315573 ctxi->ready = FFMAX(ctxi->ready, priority);
233 4315573 }
234
235 /**
236 * Clear frame_blocked_in on all outputs.
237 * This is necessary whenever something changes on input.
238 */
239 2576007 static void filter_unblock(AVFilterContext *filter)
240 {
241 unsigned i;
242
243
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 4682726 for (i = 0; i < filter->nb_outputs; i++) {
244 2106719 FilterLinkInternal * const li = ff_link_internal(filter->outputs[i]);
245 2106719 li->frame_blocked_in = 0;
246 }
247 2576007 }
248
249
250 20146 void ff_avfilter_link_set_in_status(AVFilterLink *link, int status, int64_t pts)
251 {
252 20146 FilterLinkInternal * const li = ff_link_internal(link);
253
254
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 20146 if (li->status_in == status)
255 5723 return;
256
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 14423 av_assert0(!li->status_in);
257 14423 li->status_in = status;
258 14423 li->status_in_pts = pts;
259 14423 li->frame_wanted_out = 0;
260 14423 li->frame_blocked_in = 0;
261 14423 filter_unblock(link->dst);
262 14423 ff_filter_set_ready(link->dst, 200);
263 }
264
265 /**
266 * Set the status field of a link from the destination filter.
267 * The pts should probably be left unset (AV_NOPTS_VALUE).
268 */
269 8776 static void link_set_out_status(AVFilterLink *link, int status, int64_t pts)
270 {
271 8776 FilterLinkInternal * const li = ff_link_internal(link);
272
273
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 8776 av_assert0(!li->frame_wanted_out);
274
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 8776 av_assert0(!li->status_out);
275 8776 li->status_out = status;
276
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 8776 if (pts != AV_NOPTS_VALUE)
277 6233 update_link_current_pts(li, pts);
278 8776 filter_unblock(link->dst);
279 8776 ff_filter_set_ready(link->src, 200);
280 8776 }
281
282 1334 int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
283 unsigned filt_srcpad_idx, unsigned filt_dstpad_idx)
284 {
285 int ret;
286 1334 unsigned dstpad_idx = link->dstpad - link->dst->input_pads;
287
288 1334 av_log(link->dst, AV_LOG_VERBOSE, "auto-inserting filter '%s' "
289 "between the filter '%s' and the filter '%s'\n",
290 1334 filt->name, link->src->name, link->dst->name);
291
292 1334 link->dst->inputs[dstpad_idx] = NULL;
293
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 1334 if ((ret = avfilter_link(filt, filt_dstpad_idx, link->dst, dstpad_idx)) < 0) {
294 /* failed to link output filter to new filter */
295 ✗ link->dst->inputs[dstpad_idx] = link;
296 ✗ return ret;
297 }
298
299 /* re-hookup the link to the new destination filter we inserted */
300 1334 link->dst = filt;
301 1334 link->dstpad = &filt->input_pads[filt_srcpad_idx];
302 1334 filt->inputs[filt_srcpad_idx] = link;
303
304 /* if any information on supported media formats already exists on the
305 * link, we need to preserve that */
306
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 1334 if (link->outcfg.formats)
307 1334 ff_formats_changeref(&link->outcfg.formats,
308 1334 &filt->outputs[filt_dstpad_idx]->outcfg.formats);
309
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 1334 if (link->outcfg.color_spaces)
310 634 ff_formats_changeref(&link->outcfg.color_spaces,
311 634 &filt->outputs[filt_dstpad_idx]->outcfg.color_spaces);
312
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 1334 if (link->outcfg.color_ranges)
313 634 ff_formats_changeref(&link->outcfg.color_ranges,
314 634 &filt->outputs[filt_dstpad_idx]->outcfg.color_ranges);
315
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 1334 if (link->outcfg.alpha_modes)
316 634 ff_formats_changeref(&link->outcfg.alpha_modes,
317 634 &filt->outputs[filt_dstpad_idx]->outcfg.alpha_modes);
318
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 1334 if (link->outcfg.samplerates)
319 700 ff_formats_changeref(&link->outcfg.samplerates,
320 700 &filt->outputs[filt_dstpad_idx]->outcfg.samplerates);
321
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 1334 if (link->outcfg.channel_layouts)
322 700 ff_channel_layouts_changeref(&link->outcfg.channel_layouts,
323 700 &filt->outputs[filt_dstpad_idx]->outcfg.channel_layouts);
324
325 1334 return 0;
326 }
327
328 46009 int ff_filter_config_links(AVFilterContext *filter)
329 {
330 int (*config_link)(AVFilterLink *);
331 unsigned i;
332 int ret;
333
334
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 83637 for (i = 0; i < filter->nb_inputs; i ++) {
335 37632 AVFilterLink *link = filter->inputs[i];
336 AVFilterLink *inlink;
337 37632 FilterLinkInternal *li = ff_link_internal(link);
338 FilterLinkInternal *li_in;
339
340
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 37632 if (!link) continue;
341
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 37632 if (!link->src || !link->dst) {
342 ✗ av_log(filter, AV_LOG_ERROR,
343 "Not all input and output are properly linked (%d).\n", i);
344 ✗ return AVERROR(EINVAL);
345 }
346
347
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 37632 inlink = link->src->nb_inputs ? link->src->inputs[0] : NULL;
348
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 37632 li_in = inlink ? ff_link_internal(inlink) : NULL;
349 37632 li->l.current_pts =
350 37632 li->l.current_pts_us = AV_NOPTS_VALUE;
351
352
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 37632 switch (li->init_state) {
353 112 case AVLINK_INIT:
354 112 continue;
355 2 case AVLINK_STARTINIT:
356 2 av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
357 2 return 0;
358 37518 case AVLINK_UNINIT:
359 37518 li->init_state = AVLINK_STARTINIT;
360
361
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 37518 if ((ret = ff_filter_config_links(link->src)) < 0)
362 1 return ret;
363
364
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 37517 if (!(config_link = link->srcpad->config_props)) {
365
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 19640 if (link->src->nb_inputs != 1) {
366 ✗ av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
367 "with more than one input "
368 "must set config_props() "
369 "callbacks on all outputs\n");
370 ✗ return AVERROR(EINVAL);
371 }
372 }
373
374 /* Copy side data before link->srcpad->config_props() is called, so the filter
375 * may remove it for the next filter in the chain */
376
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 37517 if (inlink && inlink->nb_side_data && !link->nb_side_data) {
377
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 709 for (int j = 0; j < inlink->nb_side_data; j++) {
378 377 ret = av_frame_side_data_clone(&link->side_data, &link->nb_side_data,
379 377 inlink->side_data[j], 0);
380
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 377 if (ret < 0) {
381 ✗ av_frame_side_data_free(&link->side_data, &link->nb_side_data);
382 ✗ return ret;
383 }
384 }
385 }
386
387
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 37517 if (config_link && (ret = config_link(link)) < 0) {
388 1 av_log(link->src, AV_LOG_ERROR,
389 "Failed to configure output pad on %s\n",
390 1 link->src->name);
391 1 return ret;
392 }
393
394
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 37516 switch (link->type) {
395 31152 case AVMEDIA_TYPE_VIDEO:
396
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 31152 if (!link->time_base.num && !link->time_base.den)
397
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 23829 link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q;
398
399
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 31152 if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
400 16945 link->sample_aspect_ratio = inlink ?
401
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 16945 inlink->sample_aspect_ratio : (AVRational){1,1};
402
403
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 31152 if (inlink) {
404
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 24096 if (!li->l.frame_rate.num && !li->l.frame_rate.den)
405 23872 li->l.frame_rate = li_in->l.frame_rate;
406
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 24096 if (!link->w)
407 16442 link->w = inlink->w;
408
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 24096 if (!link->h)
409 16442 link->h = inlink->h;
410
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 7056 } else if (!link->w || !link->h) {
411 ✗ av_log(link->src, AV_LOG_ERROR,
412 "Video source filters must set their output link's "
413 "width and height\n");
414 ✗ return AVERROR(EINVAL);
415 }
416 31152 break;
417
418 6364 case AVMEDIA_TYPE_AUDIO:
419
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 6364 if (inlink) {
420
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 4873 if (!link->time_base.num && !link->time_base.den)
421 3293 link->time_base = inlink->time_base;
422 }
423
424
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 6364 if (!link->time_base.num && !link->time_base.den)
425 88 link->time_base = (AVRational) {1, link->sample_rate};
426 }
427
428
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 37516 if (link->src->nb_inputs &&
429
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 28969 !(fffilter(link->src->filter)->flags_internal & FF_FILTER_FLAG_HWFRAME_AWARE)) {
430 28969 FilterLink *l0 = ff_filter_link(link->src->inputs[0]);
431
432
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 28969 av_assert0(!li->l.hw_frames_ctx &&
433 "should not be set by non-hwframe-aware filter");
434
435
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 28969 if (l0->hw_frames_ctx) {
436 ✗ li->l.hw_frames_ctx = av_buffer_ref(l0->hw_frames_ctx);
437 ✗ if (!li->l.hw_frames_ctx)
438 ✗ return AVERROR(ENOMEM);
439 }
440 }
441
442
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 37516 if ((config_link = link->dstpad->config_props))
443
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 5066 if ((ret = config_link(link)) < 0) {
444 ✗ av_log(link->dst, AV_LOG_ERROR,
445 "Failed to configure input pad on %s\n",
446 ✗ link->dst->name);
447 ✗ return ret;
448 }
449
450 37516 li->init_state = AVLINK_INIT;
451 }
452 }
453
454 46005 return 0;
455 }
456
457 #ifdef TRACE
458 void ff_tlog_link(void *ctx, AVFilterLink *link, int end)
459 {
460 if (link->type == AVMEDIA_TYPE_VIDEO) {
461 ff_tlog(ctx,
462 "link[%p s:%dx%d fmt:%s %s->%s]%s",
463 link, link->w, link->h,
464 av_get_pix_fmt_name(link->format),
465 link->src ? link->src->filter->name : "",
466 link->dst ? link->dst->filter->name : "",
467 end ? "\n" : "");
468 } else {
469 char buf[128];
470 av_channel_layout_describe(&link->ch_layout, buf, sizeof(buf));
471
472 ff_tlog(ctx,
473 "link[%p r:%d cl:%s fmt:%s %s->%s]%s",
474 link, (int)link->sample_rate, buf,
475 av_get_sample_fmt_name(link->format),
476 link->src ? link->src->filter->name : "",
477 link->dst ? link->dst->filter->name : "",
478 end ? "\n" : "");
479 }
480 }
481 #endif
482
483 824090 int ff_request_frame(AVFilterLink *link)
484 {
485 824090 FilterLinkInternal * const li = ff_link_internal(link);
486
487 FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1);
488
489 av_assert1(!fffilter(link->dst->filter)->activate);
490
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 824090 if (li->status_out)
491 9 return li->status_out;
492
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 824081 if (li->status_in) {
493
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 6234 if (ff_framequeue_queued_frames(&li->fifo)) {
494 av_assert1(!li->frame_wanted_out);
495 av_assert1(fffilterctx(link->dst)->ready >= 300);
496 ✗ return 0;
497 } else {
498 /* Acknowledge status change. Filters using ff_request_frame() will
499 handle the change automatically. Filters can also check the
500 status directly but none do yet. */
501 6234 link_set_out_status(link, li->status_in, li->status_in_pts);
502 6234 return li->status_out;
503 }
504 }
505 817847 li->frame_wanted_out = 1;
506 817847 ff_filter_set_ready(link->src, 100);
507 817847 return 0;
508 }
509
510 6227 static int64_t guess_status_pts(AVFilterContext *ctx, int status, AVRational link_time_base)
511 {
512 unsigned i;
513 6227 int64_t r = INT64_MAX;
514
515
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 12453 for (i = 0; i < ctx->nb_inputs; i++) {
516 6226 FilterLinkInternal * const li = ff_link_internal(ctx->inputs[i]);
517
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 6226 if (li->status_out == status)
518 6226 r = FFMIN(r, av_rescale_q(li->l.current_pts, ctx->inputs[i]->time_base, link_time_base));
519 }
520
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 6227 if (r < INT64_MAX)
521 6226 return r;
522 1 av_log(ctx, AV_LOG_WARNING, "EOF timestamp not reliable\n");
523
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 1 for (i = 0; i < ctx->nb_inputs; i++) {
524 ✗ FilterLinkInternal * const li = ff_link_internal(ctx->inputs[i]);
525 ✗ r = FFMIN(r, av_rescale_q(li->status_in_pts, ctx->inputs[i]->time_base, link_time_base));
526 }
527
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 1 if (r < INT64_MAX)
528 ✗ return r;
529 1 return AV_NOPTS_VALUE;
530 }
531
532 824405 static int request_frame_to_filter(AVFilterLink *link)
533 {
534 824405 FilterLinkInternal * const li = ff_link_internal(link);
535 824405 int ret = -1;
536
537 FF_TPRINTF_START(NULL, request_frame_to_filter); ff_tlog_link(NULL, link, 1);
538 /* Assume the filter is blocked, let the method clear it if not */
539 824405 li->frame_blocked_in = 1;
540
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 824405 if (link->srcpad->request_frame)
541 2017 ret = link->srcpad->request_frame(link);
542
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 822388 else if (link->src->inputs[0])
543 822388 ret = ff_request_frame(link->src->inputs[0]);
544
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 824405 if (ret < 0) {
545
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 6227 if (ret != AVERROR(EAGAIN) && ret != li->status_in)
546 6227 ff_avfilter_link_set_in_status(link, ret, guess_status_pts(link->src, ret, link->time_base));
547
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 6227 if (ret == AVERROR_EOF)
548 6227 ret = 0;
549 }
550 824405 return ret;
551 }
552
553 static const char *const var_names[] = {
554 "t",
555 "n",
556 "w",
557 "h",
558 NULL
559 };
560
561 enum {
562 VAR_T,
563 VAR_N,
564 VAR_W,
565 VAR_H,
566 VAR_VARS_NB
567 };
568
569 6 static int set_enable_expr(FFFilterContext *ctxi, const char *expr)
570 {
571 6 AVFilterContext *ctx = &ctxi->p;
572 int ret;
573 char *expr_dup;
574 6 AVExpr *old = ctxi->enable;
575
576
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 6 if (!(ctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)) {
577 ✗ av_log(ctx, AV_LOG_ERROR, "Timeline ('enable' option) not supported "
578 ✗ "with filter '%s'\n", ctx->filter->name);
579 ✗ return AVERROR_PATCHWELCOME;
580 }
581
582 6 expr_dup = av_strdup(expr);
583
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 6 if (!expr_dup)
584 ✗ return AVERROR(ENOMEM);
585
586
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 6 if (!ctxi->var_values) {
587 6 ctxi->var_values = av_calloc(VAR_VARS_NB, sizeof(*ctxi->var_values));
588
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 6 if (!ctxi->var_values) {
589 ✗ av_free(expr_dup);
590 ✗ return AVERROR(ENOMEM);
591 }
592 }
593
594 6 ret = av_expr_parse(&ctxi->enable, expr_dup, var_names,
595 NULL, NULL, NULL, NULL, 0, ctx->priv);
596
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 6 if (ret < 0) {
597 ✗ av_log(ctx->priv, AV_LOG_ERROR,
598 "Error when evaluating the expression '%s' for enable\n",
599 expr_dup);
600 ✗ av_free(expr_dup);
601 ✗ return ret;
602 }
603
604 6 av_expr_free(old);
605 6 av_free(ctx->enable_str);
606 6 ctx->enable_str = expr_dup;
607 6 return 0;
608 }
609
610 ✗ int avfilter_process_command(AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags)
611 {
612 ✗ if(!strcmp(cmd, "ping")){
613 ✗ char local_res[256] = {0};
614
615 ✗ if (!res) {
616 ✗ res = local_res;
617 ✗ res_len = sizeof(local_res);
618 }
619 ✗ av_strlcatf(res, res_len, "pong from:%s %s\n", filter->filter->name, filter->name);
620 ✗ if (res == local_res)
621 ✗ av_log(filter, AV_LOG_INFO, "%s", res);
622 ✗ return 0;
623 ✗ }else if(!strcmp(cmd, "enable")) {
624 ✗ return set_enable_expr(fffilterctx(filter), arg);
625 ✗ }else if (fffilter(filter->filter)->process_command) {
626 ✗ return fffilter(filter->filter)->process_command(filter, cmd, arg, res, res_len, flags);
627 }
628 ✗ return AVERROR(ENOSYS);
629 }
630
631 ✗ unsigned avfilter_filter_pad_count(const AVFilter *filter, int is_output)
632 {
633 ✗ return is_output ? fffilter(filter)->nb_outputs : fffilter(filter)->nb_inputs;
634 }
635
636 596 static const char *default_filter_name(void *filter_ctx)
637 {
638 596 AVFilterContext *ctx = filter_ctx;
639
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 596 return ctx->name ? ctx->name : ctx->filter->name;
640 }
641
642 57883 static void *filter_child_next(void *obj, void *prev)
643 {
644 57883 AVFilterContext *ctx = obj;
645
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 57883 if (!prev && ctx->filter && ctx->filter->priv_class && ctx->priv)
646 57877 return ctx->priv;
647 6 return NULL;
648 }
649
650 ✗ static const AVClass *filter_child_class_iterate(void **iter)
651 {
652 const AVFilter *f;
653
654 ✗ while ((f = av_filter_iterate(iter)))
655 ✗ if (f->priv_class)
656 ✗ return f->priv_class;
657
658 ✗ return NULL;
659 }
660
661 #define OFFSET(x) offsetof(AVFilterContext, x)
662 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM
663 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
664 static const AVOption avfilter_options[] = {
665 { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
666 { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, .unit = "thread_type" },
667 { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = FLAGS, .unit = "thread_type" },
668 { "enable", "set enable expression", OFFSET(enable_str), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = TFLAGS },
669 { "threads", "Allowed number of threads", OFFSET(nb_threads), AV_OPT_TYPE_INT,
670 { .i64 = 0 }, 0, INT_MAX, FLAGS, .unit = "threads" },
671 {"auto", "autodetect a suitable number of threads to use", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, .flags = FLAGS, .unit = "threads"},
672 { "extra_hw_frames", "Number of extra hardware frames to allocate for the user",
673 OFFSET(extra_hw_frames), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
674 { NULL },
675 };
676
677 static const AVClass avfilter_class = {
678 .class_name = "AVFilter",
679 .item_name = default_filter_name,
680 .version = LIBAVUTIL_VERSION_INT,
681 .category = AV_CLASS_CATEGORY_FILTER,
682 .child_next = filter_child_next,
683 .child_class_iterate = filter_child_class_iterate,
684 .option = avfilter_options,
685 .state_flags_offset = offsetof(FFFilterContext, state_flags),
686 };
687
688 1374 static int default_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg,
689 int *ret, int nb_jobs)
690 {
691 int i;
692
693
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 2804 for (i = 0; i < nb_jobs; i++) {
694 1430 int r = func(ctx, arg, i, nb_jobs);
695
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 1430 if (ret)
696 ✗ ret[i] = r;
697 }
698 1374 return 0;
699 }
700
701 64628 AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name)
702 {
703 FFFilterContext *ctx;
704 AVFilterContext *ret;
705 64628 const FFFilter *const fi = fffilter(filter);
706 64628 int preinited = 0;
707
708
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 64628 if (!filter)
709 ✗ return NULL;
710
711 64628 ctx = av_mallocz(sizeof(*ctx));
712
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 64628 if (!ctx)
713 ✗ return NULL;
714 64628 ret = &ctx->p;
715
716 64628 ret->av_class = &avfilter_class;
717 64628 ret->filter = filter;
718
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 64628 ret->name = inst_name ? av_strdup(inst_name) : NULL;
719
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 64628 if (fi->priv_size) {
720 57617 ret->priv = av_mallocz(fi->priv_size);
721
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 57617 if (!ret->priv)
722 ✗ goto err;
723 }
724
2/2
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 64628 if (fi->preinit) {
725
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 13789 if (fi->preinit(ret) < 0)
726 ✗ goto err;
727 13789 preinited = 1;
728 }
729
730 64628 av_opt_set_defaults(ret);
731
2/2
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 64628 if (filter->priv_class) {
732 56358 *(const AVClass**)ret->priv = filter->priv_class;
733 56358 av_opt_set_defaults(ret->priv);
734 }
735
736 64628 ctx->execute = default_execute;
737
738 64628 ret->nb_inputs = fi->nb_inputs;
739
2/2
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 64628 if (ret->nb_inputs ) {
740 54725 ret->input_pads = av_memdup(filter->inputs, ret->nb_inputs * sizeof(*filter->inputs));
741
1/2
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 54725 if (!ret->input_pads)
742 ✗ goto err;
743 54725 ret->inputs = av_calloc(ret->nb_inputs, sizeof(*ret->inputs));
744
1/2
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 54725 if (!ret->inputs)
745 ✗ goto err;
746 }
747
748 64628 ret->nb_outputs = fi->nb_outputs;
749
2/2
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 64628 if (ret->nb_outputs) {
750 56040 ret->output_pads = av_memdup(filter->outputs, ret->nb_outputs * sizeof(*filter->outputs));
751
1/2
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 56040 if (!ret->output_pads)
752 ✗ goto err;
753 56040 ret->outputs = av_calloc(ret->nb_outputs, sizeof(*ret->outputs));
754
1/2
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✓ Branch 1 taken 56040 times.
 56040 if (!ret->outputs)
755 ✗ goto err;
756 }
757
758 64628 return ret;
759
760 ✗ err:
761 ✗ if (preinited)
762 ✗ fi->uninit(ret);
763 ✗ av_freep(&ret->name);
764 ✗ av_freep(&ret->inputs);
765 ✗ av_freep(&ret->input_pads);
766 ✗ ret->nb_inputs = 0;
767 ✗ av_freep(&ret->outputs);
768 ✗ av_freep(&ret->output_pads);
769 ✗ ret->nb_outputs = 0;
770 ✗ av_freep(&ret->priv);
771 ✗ av_free(ret);
772 ✗ return NULL;
773 }
774
775 111455 static void free_link(AVFilterLink *link)
776 {
777
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 111455 if (!link)
778 63420 return;
779
780
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 48035 if (link->src)
781 47903 link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
782
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 48035 if (link->dst)
783 47903 link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
784
785 48035 ff_formats_unref(&link->incfg.formats);
786 48035 ff_formats_unref(&link->outcfg.formats);
787 48035 ff_formats_unref(&link->incfg.color_spaces);
788 48035 ff_formats_unref(&link->outcfg.color_spaces);
789 48035 ff_formats_unref(&link->incfg.color_ranges);
790 48035 ff_formats_unref(&link->outcfg.color_ranges);
791 48035 ff_formats_unref(&link->incfg.alpha_modes);
792 48035 ff_formats_unref(&link->outcfg.alpha_modes);
793 48035 ff_formats_unref(&link->incfg.samplerates);
794 48035 ff_formats_unref(&link->outcfg.samplerates);
795 48035 ff_channel_layouts_unref(&link->incfg.channel_layouts);
796 48035 ff_channel_layouts_unref(&link->outcfg.channel_layouts);
797 48035 link_free(&link);
798 }
799
800 64628 void avfilter_free(AVFilterContext *filter)
801 {
802 FFFilterContext *ctxi;
803 int i;
804
805
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 64628 if (!filter)
806 ✗ return;
807 64628 ctxi = fffilterctx(filter);
808
809
1/2
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 64628 if (filter->graph)
810 64628 ff_filter_graph_remove_filter(filter->graph, filter);
811
812
2/2
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 64628 if (fffilter(filter->filter)->uninit)
813 50155 fffilter(filter->filter)->uninit(filter);
814
815
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 119744 for (i = 0; i < filter->nb_inputs; i++) {
816 55116 free_link(filter->inputs[i]);
817
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 55116 if (filter->input_pads[i].flags & AVFILTERPAD_FLAG_FREE_NAME)
818 272 av_freep(&filter->input_pads[i].name);
819 }
820
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 120967 for (i = 0; i < filter->nb_outputs; i++) {
821 56339 free_link(filter->outputs[i]);
822
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 56339 if (filter->output_pads[i].flags & AVFILTERPAD_FLAG_FREE_NAME)
823 289 av_freep(&filter->output_pads[i].name);
824 }
825
826
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 64628 if (filter->filter->priv_class)
827 56358 av_opt_free(filter->priv);
828
829 64628 av_buffer_unref(&filter->hw_device_ctx);
830
831 64628 av_freep(&filter->name);
832 64628 av_freep(&filter->input_pads);
833 64628 av_freep(&filter->output_pads);
834 64628 av_freep(&filter->inputs);
835 64628 av_freep(&filter->outputs);
836 64628 av_freep(&filter->priv);
837
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 64628 while (ctxi->command_queue)
838 ✗ command_queue_pop(filter);
839 64628 av_opt_free(filter);
840 64628 av_expr_free(ctxi->enable);
841 64628 ctxi->enable = NULL;
842 64628 av_freep(&ctxi->var_values);
843 64628 av_free(filter);
844 }
845
846 19553 int ff_filter_get_nb_threads(AVFilterContext *ctx)
847 {
848
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 19553 if (ctx->nb_threads > 0)
849 ✗ return FFMIN(ctx->nb_threads, ctx->graph->nb_threads);
850 19553 return ctx->graph->nb_threads;
851 }
852
853 34524 int ff_filter_opt_parse(void *logctx, const AVClass *priv_class,
854 AVDictionary **options, const char *args)
855 {
856 34524 const AVOption *o = NULL;
857 int ret;
858 34524 int offset= -1;
859
860
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 34524 if (!args)
861 ✗ return 0;
862
863
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 94201 while (*args) {
864 char *parsed_key, *value;
865 const char *key;
866 59677 const char *shorthand = NULL;
867 59677 int additional_flags = 0;
868
869
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 59677 if (priv_class && (o = av_opt_next(&priv_class, o))) {
870
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 44897 if (o->type == AV_OPT_TYPE_CONST || o->offset == offset)
871 6380 continue;
872 38517 offset = o->offset;
873 38517 shorthand = o->name;
874 }
875
876 53297 ret = av_opt_get_key_value(&args, "=", ":",
877 shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
878 &parsed_key, &value);
879
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 53297 if (ret < 0) {
880 ✗ if (ret == AVERROR(EINVAL))
881 ✗ av_log(logctx, AV_LOG_ERROR, "No option name near '%s'\n", args);
882 else
883 ✗ av_log(logctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", args,
884 ✗ av_err2str(ret));
885 ✗ return ret;
886 }
887
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 53297 if (*args)
888 27832 args++;
889
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 53297 if (parsed_key) {
890 32180 key = parsed_key;
891 32180 additional_flags = AV_DICT_DONT_STRDUP_KEY;
892 32180 priv_class = NULL; /* reject all remaining shorthand */
893 } else {
894 21117 key = shorthand;
895 }
896
897 53297 av_log(logctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
898
899 53297 av_dict_set(options, key, value,
900 additional_flags | AV_DICT_DONT_STRDUP_VAL | AV_DICT_MULTIKEY);
901 }
902
903 34524 return 0;
904 }
905
906 ✗ int ff_filter_process_command(AVFilterContext *ctx, const char *cmd,
907 const char *arg, char *res, int res_len, int flags)
908 {
909 const AVOption *o;
910
911 ✗ if (!ctx->filter->priv_class)
912 ✗ return 0;
913 ✗ o = av_opt_find2(ctx->priv, cmd, NULL, AV_OPT_FLAG_RUNTIME_PARAM | AV_OPT_FLAG_FILTERING_PARAM, AV_OPT_SEARCH_CHILDREN, NULL);
914 ✗ if (!o)
915 ✗ return AVERROR(ENOSYS);
916 ✗ return av_opt_set(ctx->priv, cmd, arg, 0);
917 }
918
919 64628 int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
920 {
921 64628 FFFilterContext *ctxi = fffilterctx(ctx);
922 64628 int ret = 0;
923
924
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 64628 if (ctxi->state_flags & AV_CLASS_STATE_INITIALIZED) {
925 ✗ av_log(ctx, AV_LOG_ERROR, "Filter already initialized\n");
926 ✗ return AVERROR(EINVAL);
927 }
928
929 64628 ret = av_opt_set_dict2(ctx, options, AV_OPT_SEARCH_CHILDREN);
930
1/2
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 64628 if (ret < 0) {
931 ✗ av_log(ctx, AV_LOG_ERROR, "Error applying generic filter options.\n");
932 ✗ return ret;
933 }
934
935
2/2
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 64628 if (ctx->filter->flags & AVFILTER_FLAG_SLICE_THREADS &&
936
2/2
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✓ Branch 1 taken 1102 times.
 1258 ctx->thread_type & ctx->graph->thread_type & AVFILTER_THREAD_SLICE &&
937
1/2
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✗ Branch 2 not taken.
 156 fffiltergraph(ctx->graph)->thread_execute) {
938 156 ctx->thread_type = AVFILTER_THREAD_SLICE;
939 156 ctxi->execute = fffiltergraph(ctx->graph)->thread_execute;
940 } else {
941 64472 ctx->thread_type = 0;
942 }
943
944
2/2
✓ Branch 1 taken 50994 times.
✓ Branch 2 taken 13634 times.
 64628 if (fffilter(ctx->filter)->init)
945 50994 ret = fffilter(ctx->filter)->init(ctx);
946
2/2
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✓ Branch 1 taken 64627 times.
 64628 if (ret < 0)
947 1 return ret;
948
949
2/2
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 64627 if (ctx->enable_str) {
950 6 ret = set_enable_expr(ctxi, ctx->enable_str);
951
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✓ Branch 1 taken 6 times.
 6 if (ret < 0)
952 ✗ return ret;
953 }
954
955 64627 ctxi->state_flags |= AV_CLASS_STATE_INITIALIZED;
956
957 64627 return 0;
958 }
959
960 21289 int avfilter_init_str(AVFilterContext *filter, const char *args)
961 {
962 21289 AVDictionary *options = NULL;
963 const AVDictionaryEntry *e;
964 21289 int ret = 0;
965
966
3/4
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✓ Branch 1 taken 10663 times.
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 21289 if (args && *args) {
967 10626 ret = ff_filter_opt_parse(filter, filter->filter->priv_class, &options, args);
968
1/2
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✓ Branch 1 taken 10626 times.
 10626 if (ret < 0)
969 ✗ goto fail;
970 }
971
972 21289 ret = avfilter_init_dict(filter, &options);
973
1/2
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✓ Branch 1 taken 21289 times.
 21289 if (ret < 0)
974 ✗ goto fail;
975
976
1/2
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✗ Branch 2 not taken.
 21289 if ((e = av_dict_iterate(options, NULL))) {
977 ✗ av_log(filter, AV_LOG_ERROR, "No such option: %s.\n", e->key);
978 ✗ ret = AVERROR_OPTION_NOT_FOUND;
979 ✗ goto fail;
980 }
981
982 21289 fail:
983 21289 av_dict_free(&options);
984
985 21289 return ret;
986 }
987
988 15478 const char *avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
989 {
990 15478 return pads[pad_idx].name;
991 }
992
993 31321 enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
994 {
995 31321 return pads[pad_idx].type;
996 }
997
998 ✗ AVBufferRef *avfilter_link_get_hw_frames_ctx(AVFilterLink *link)
999 {
1000 ✗ FilterLink *plink = ff_filter_link(link);
1001 ✗ if (plink->hw_frames_ctx)
1002 ✗ return av_buffer_ref(plink->hw_frames_ctx);
1003
1004 ✗ return NULL;
1005 }
1006
1007 803166 static int default_filter_frame(AVFilterLink *link, AVFrame *frame)
1008 {
1009 803166 return ff_filter_frame(link->dst->outputs[0], frame);
1010 }
1011
1012 /**
1013 * Evaluate the timeline expression of the link for the time and properties
1014 * of the frame.
1015 * @return >0 if enabled, 0 if disabled
1016 * @note It does not update link->dst->is_disabled.
1017 */
1018 2547514 static int evaluate_timeline_at_frame(AVFilterLink *link, const AVFrame *frame)
1019 {
1020 2547514 FilterLink *l = ff_filter_link(link);
1021 2547514 AVFilterContext *dstctx = link->dst;
1022 2547514 FFFilterContext *dsti = fffilterctx(dstctx);
1023 2547514 int64_t pts = frame->pts;
1024
1025
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✓ Branch 0 taken 2547316 times.
✓ Branch 1 taken 198 times.
 2547514 if (!dstctx->enable_str)
1026 2547316 return 1;
1027
1028 198 dsti->var_values[VAR_N] = l->frame_count_out;
1029
1/2
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✗ Branch 1 not taken.
 198 dsti->var_values[VAR_T] = pts == AV_NOPTS_VALUE ? NAN : pts * av_q2d(link->time_base);
1030 198 dsti->var_values[VAR_W] = link->w;
1031 198 dsti->var_values[VAR_H] = link->h;
1032
1033 198 return fabs(av_expr_eval(dsti->enable, dsti->var_values, NULL)) >= 0.5;
1034 }
1035
1036 823623 static int filter_frame_framed(AVFilterLink *link, AVFrame *frame)
1037 {
1038 823623 FilterLink *l = ff_filter_link(link);
1039 int (*filter_frame)(AVFilterLink *, AVFrame *);
1040 823623 AVFilterContext *dstctx = link->dst;
1041 823623 AVFilterPad *dst = link->dstpad;
1042 int ret;
1043
1044
2/2
✓ Branch 0 taken 803157 times.
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 823623 if (!(filter_frame = dst->filter_frame))
1045 803157 filter_frame = default_filter_frame;
1046
1047
2/2
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✓ Branch 1 taken 820630 times.
 823623 if (dst->flags & AVFILTERPAD_FLAG_NEEDS_WRITABLE) {
1048 2993 ret = ff_inlink_make_frame_writable(link, &frame);
1049
1/2
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✓ Branch 1 taken 2993 times.
 2993 if (ret < 0)
1050 ✗ goto fail;
1051 }
1052
1053 823623 ff_inlink_process_commands(link, frame);
1054 823623 dstctx->is_disabled = !evaluate_timeline_at_frame(link, frame);
1055
1056
2/2
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 823623 if (dstctx->is_disabled &&
1057
2/2
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✓ Branch 1 taken 10 times.
 19 (dstctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC))
1058 9 filter_frame = default_filter_frame;
1059 823623 ret = filter_frame(link, frame);
1060 823623 l->frame_count_out++;
1061 823623 return ret;
1062
1063 ✗ fail:
1064 ✗ av_frame_free(&frame);
1065 ✗ return ret;
1066 }
1067
1068 1729185 int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
1069 {
1070 1729185 FilterLinkInternal * const li = ff_link_internal(link);
1071 int ret;
1072 1729185 FF_TPRINTF_START(NULL, filter_frame); ff_tlog_link(NULL, link, 1); ff_tlog(NULL, " "); tlog_ref(NULL, frame, 1);
1073
1074 /* Consistency checks */
1075
2/2
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 1729185 if (link->type == AVMEDIA_TYPE_VIDEO) {
1076
2/2
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✓ Branch 1 taken 150227 times.
 586391 if (strcmp(link->dst->filter->name, "buffersink") &&
1077
2/2
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✓ Branch 1 taken 176254 times.
 436164 strcmp(link->dst->filter->name, "format") &&
1078
2/2
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✓ Branch 1 taken 27 times.
 259910 strcmp(link->dst->filter->name, "idet") &&
1079
2/2
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✓ Branch 1 taken 91561 times.
 259883 strcmp(link->dst->filter->name, "null") &&
1080
2/2
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✓ Branch 1 taken 110590 times.
 168322 strcmp(link->dst->filter->name, "scale") &&
1081
1/2
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✗ Branch 1 not taken.
 57732 strcmp(link->dst->filter->name, "libplacebo") &&
1082
2/2
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✓ Branch 1 taken 123 times.
 57732 strcmp(link->dst->filter->name, "hqdn3d")) {
1083 av_assert1(frame->format == link->format);
1084 av_assert1(frame->width == link->w);
1085 av_assert1(frame->height == link->h);
1086 57609 if (av_pix_fmt_desc_get(link->format)->flags & AV_PIX_FMT_FLAG_ALPHA)
1087 av_assert1(frame->alpha_mode == link->alpha_mode);
1088 }
1089 } else {
1090
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✗ Branch 0 not taken.
✓ Branch 1 taken 1142794 times.
 1142794 if (frame->format != link->format) {
1091 ✗ av_log(link->dst, AV_LOG_ERROR, "Format change is not supported\n");
1092 ✗ goto error;
1093 }
1094
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1142794 times.
 1142794 if (av_channel_layout_compare(&frame->ch_layout, &link->ch_layout)) {
1095 ✗ av_log(link->dst, AV_LOG_ERROR, "Channel layout change is not supported\n");
1096 ✗ goto error;
1097 }
1098
1/2
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 1142794 if (frame->sample_rate != link->sample_rate) {
1099 ✗ av_log(link->dst, AV_LOG_ERROR, "Sample rate change is not supported\n");
1100 ✗ goto error;
1101 }
1102
1103 1142794 frame->duration = av_rescale_q(frame->nb_samples, (AVRational){ 1, frame->sample_rate },
1104 link->time_base);
1105 }
1106
1107 1729185 li->frame_blocked_in = li->frame_wanted_out = 0;
1108 1729185 li->l.frame_count_in++;
1109 1729185 li->l.sample_count_in += frame->nb_samples;
1110 1729185 filter_unblock(link->dst);
1111 1729185 ret = ff_framequeue_add(&li->fifo, frame);
1112
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✓ Branch 1 taken 1729185 times.
 1729185 if (ret < 0) {
1113 ✗ const FFFrameQueueGlobal *global = li->fifo.global;
1114 ✗ if (ret == AVERROR(ENOMEM) && global->queued >= global->max_queued)
1115 ✗ av_log(link->dst, AV_LOG_ERROR, "Exhausted frame queue capacity (%zu frames)\n", global->max_queued);
1116 ✗ av_frame_free(&frame);
1117 ✗ return ret;
1118 }
1119 1729185 ff_filter_set_ready(link->dst, 300);
1120 1729185 return 0;
1121
1122 ✗ error:
1123 ✗ av_frame_free(&frame);
1124 ✗ return AVERROR_PATCHWELCOME;
1125 }
1126
1127 2466265 static int samples_ready(FilterLinkInternal *link, unsigned min)
1128 {
1129
2/2
✓ Branch 1 taken 823757 times.
✓ Branch 2 taken 1642508 times.
 3290022 return ff_framequeue_queued_frames(&link->fifo) &&
1130
2/2
✓ Branch 1 taken 135 times.
✓ Branch 2 taken 823622 times.
 823757 (ff_framequeue_queued_samples(&link->fifo) >= min ||
1131
2/2
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✓ Branch 1 taken 134 times.
 135 link->status_in);
1132 }
1133
1134 2935 static int take_samples(FilterLinkInternal *li, unsigned min, unsigned max,
1135 AVFrame **rframe)
1136 {
1137 2935 FilterLink *l = &li->l;
1138 2935 AVFilterLink *link = &l->pub;
1139 AVFrame *frame0, *frame, *buf;
1140 unsigned nb_samples, nb_frames, i, p;
1141 int ret;
1142
1143 /* Note: this function relies on no format changes and must only be
1144 called with enough samples. */
1145 av_assert1(samples_ready(li, l->min_samples));
1146 2935 frame0 = frame = ff_framequeue_peek(&li->fifo, 0);
1147
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✓ Branch 4 taken 1025 times.
✓ Branch 5 taken 276 times.
 2935 if (!li->fifo.samples_skipped && frame->nb_samples >= min && frame->nb_samples <= max) {
1148 1025 *rframe = ff_framequeue_take(&li->fifo);
1149 1025 return 0;
1150 }
1151 1910 nb_frames = 0;
1152 1910 nb_samples = 0;
1153 while (1) {
1154
2/2
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✓ Branch 1 taken 1482 times.
 3140 if (nb_samples + frame->nb_samples > max) {
1155
2/2
✓ Branch 0 taken 1521 times.
✓ Branch 1 taken 137 times.
 1658 if (nb_samples < min)
1156 1521 nb_samples = max;
1157 1658 break;
1158 }
1159 1482 nb_samples += frame->nb_samples;
1160 1482 nb_frames++;
1161
2/2
✓ Branch 1 taken 252 times.
✓ Branch 2 taken 1230 times.
 1482 if (nb_frames == ff_framequeue_queued_frames(&li->fifo))
1162 252 break;
1163 1230 frame = ff_framequeue_peek(&li->fifo, nb_frames);
1164 }
1165
1166 1910 buf = ff_get_audio_buffer(link, nb_samples);
1167
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✓ Branch 1 taken 1910 times.
 1910 if (!buf)
1168 ✗ return AVERROR(ENOMEM);
1169 1910 ret = av_frame_copy_props(buf, frame0);
1170
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1910 times.
 1910 if (ret < 0) {
1171 ✗ av_frame_free(&buf);
1172 ✗ return ret;
1173 }
1174
1175 1910 p = 0;
1176
2/2
✓ Branch 0 taken 1482 times.
✓ Branch 1 taken 1910 times.
 3392 for (i = 0; i < nb_frames; i++) {
1177 1482 frame = ff_framequeue_take(&li->fifo);
1178 1482 av_samples_copy(buf->extended_data, frame->extended_data, p, 0,
1179 1482 frame->nb_samples, link->ch_layout.nb_channels, link->format);
1180 1482 p += frame->nb_samples;
1181 1482 av_frame_free(&frame);
1182 }
1183
2/2
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✓ Branch 1 taken 389 times.
 1910 if (p < nb_samples) {
1184 1521 unsigned n = nb_samples - p;
1185 1521 frame = ff_framequeue_peek(&li->fifo, 0);
1186 1521 av_samples_copy(buf->extended_data, frame->extended_data, p, 0, n,
1187 1521 link->ch_layout.nb_channels, link->format);
1188 1521 ff_framequeue_skip_samples(&li->fifo, n, link->time_base);
1189 }
1190
1191 1910 *rframe = buf;
1192 1910 return 0;
1193 }
1194
1195 823623 static int filter_frame_to_filter(AVFilterLink *link)
1196 {
1197 823623 FilterLinkInternal * const li = ff_link_internal(link);
1198 823623 AVFrame *frame = NULL;
1199 823623 AVFilterContext *dst = link->dst;
1200 int ret;
1201
1202 av_assert1(ff_framequeue_queued_frames(&li->fifo));
1203 1647246 ret = li->l.min_samples ?
1204
2/2
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✓ Branch 1 taken 823587 times.
 823623 ff_inlink_consume_samples(link, li->l.min_samples, li->l.max_samples, &frame) :
1205 823587 ff_inlink_consume_frame(link, &frame);
1206 av_assert1(ret);
1207
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 823623 if (ret < 0) {
1208 av_assert1(!frame);
1209 ✗ return ret;
1210 }
1211 /* The filter will soon have received a new frame, that may allow it to
1212 produce one or more: unblock its outputs. */
1213 823623 filter_unblock(dst);
1214 /* AVFilterPad.filter_frame() expect frame_count_out to have the value
1215 before the frame; filter_frame_framed() will re-increment it. */
1216 823623 li->l.frame_count_out--;
1217 823623 ret = filter_frame_framed(link, frame);
1218
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 823623 if (ret < 0 && ret != li->status_out) {
1219 ✗ link_set_out_status(link, ret, AV_NOPTS_VALUE);
1220 } else {
1221 /* Run once again, to see if several frames were available, or if
1222 the input status has also changed, or any other reason. */
1223 823623 ff_filter_set_ready(dst, 300);
1224 }
1225 823623 return ret;
1226 }
1227
1228 6234 static int forward_status_change(AVFilterContext *filter, FilterLinkInternal *li_in)
1229 {
1230 6234 AVFilterLink *in = &li_in->l.pub;
1231 6234 unsigned out = 0, progress = 0;
1232 int ret;
1233
1234
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✓ Branch 1 taken 6234 times.
 6234 av_assert0(!li_in->status_out);
1235
2/2
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✓ Branch 1 taken 6233 times.
 6234 if (!filter->nb_outputs) {
1236 /* not necessary with the current API and sinks */
1237 1 return 0;
1238 }
1239
2/2
✓ Branch 0 taken 6233 times.
✓ Branch 1 taken 6233 times.
 12466 while (!li_in->status_out) {
1240 6233 FilterLinkInternal *li_out = ff_link_internal(filter->outputs[out]);
1241
1242
1/2
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✗ Branch 1 not taken.
 6233 if (!li_out->status_in) {
1243 6233 progress++;
1244 6233 ret = request_frame_to_filter(filter->outputs[out]);
1245
1/2
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✓ Branch 1 taken 6233 times.
 6233 if (ret < 0)
1246 ✗ return ret;
1247 }
1248
1/2
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✗ Branch 1 not taken.
 6233 if (++out == filter->nb_outputs) {
1249
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✓ Branch 1 taken 6233 times.
 6233 if (!progress) {
1250 /* Every output already closed: input no longer interesting
1251 (example: overlay in shortest mode, other input closed). */
1252 ✗ link_set_out_status(in, li_in->status_in, li_in->status_in_pts);
1253 ✗ return 0;
1254 }
1255 6233 progress = 0;
1256 6233 out = 0;
1257 }
1258 }
1259 6233 ff_filter_set_ready(filter, 200);
1260 6233 return 0;
1261 }
1262
1263 2473668 static int filter_activate_default(AVFilterContext *filter)
1264 {
1265 unsigned i;
1266 2473668 int nb_eofs = 0;
1267
1268
2/2
✓ Branch 0 taken 2473627 times.
✓ Branch 1 taken 2473668 times.
 4947295 for (i = 0; i < filter->nb_outputs; i++)
1269 2473627 nb_eofs += ff_outlink_get_status(filter->outputs[i]) == AVERROR_EOF;
1270
4/4
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✓ Branch 1 taken 41 times.
✓ Branch 2 taken 7132 times.
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 2473668 if (filter->nb_outputs && nb_eofs == filter->nb_outputs) {
1271
2/2
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✓ Branch 1 taken 7132 times.
 14264 for (int j = 0; j < filter->nb_inputs; j++)
1272 7132 ff_inlink_set_status(filter->inputs[j], AVERROR_EOF);
1273 7132 return 0;
1274 }
1275
1276
2/2
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✓ Branch 1 taken 1642913 times.
 4109178 for (i = 0; i < filter->nb_inputs; i++) {
1277 2466265 FilterLinkInternal *li = ff_link_internal(filter->inputs[i]);
1278
2/2
✓ Branch 1 taken 823623 times.
✓ Branch 2 taken 1642642 times.
 2466265 if (samples_ready(li, li->l.min_samples)) {
1279 823623 return filter_frame_to_filter(filter->inputs[i]);
1280 }
1281 }
1282
2/2
✓ Branch 0 taken 1642642 times.
✓ Branch 1 taken 1636679 times.
 3279321 for (i = 0; i < filter->nb_inputs; i++) {
1283 1642642 FilterLinkInternal * const li = ff_link_internal(filter->inputs[i]);
1284
4/4
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✓ Branch 1 taken 1636378 times.
✓ Branch 2 taken 6234 times.
✓ Branch 3 taken 30 times.
 1642642 if (li->status_in && !li->status_out) {
1285 av_assert1(!ff_framequeue_queued_frames(&li->fifo));
1286 6234 return forward_status_change(filter, li);
1287 }
1288 }
1289
2/2
✓ Branch 0 taken 1636659 times.
✓ Branch 1 taken 823533 times.
 2460192 for (i = 0; i < filter->nb_outputs; i++) {
1290 1636659 FilterLinkInternal * const li = ff_link_internal(filter->outputs[i]);
1291
2/2
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✓ Branch 1 taken 818487 times.
 1636659 if (li->frame_wanted_out &&
1292
2/2
✓ Branch 0 taken 813146 times.
✓ Branch 1 taken 5026 times.
 818172 !li->frame_blocked_in) {
1293 813146 return request_frame_to_filter(filter->outputs[i]);
1294 }
1295 }
1296
2/2
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✓ Branch 1 taken 818507 times.
 1642020 for (i = 0; i < filter->nb_outputs; i++) {
1297 823513 FilterLinkInternal * const li = ff_link_internal(filter->outputs[i]);
1298
2/2
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✓ Branch 1 taken 818487 times.
 823513 if (li->frame_wanted_out)
1299 5026 return request_frame_to_filter(filter->outputs[i]);
1300 }
1301
2/2
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✓ Branch 1 taken 818487 times.
 818507 if (!filter->nb_outputs) {
1302 20 ff_inlink_request_frame(filter->inputs[0]);
1303 20 return 0;
1304 }
1305 818487 return FFERROR_NOT_READY;
1306 }
1307
1308 /*
1309 Filter scheduling and activation
1310
1311 When a filter is activated, it must:
1312 - if possible, output a frame;
1313 - else, if relevant, forward the input status change;
1314 - else, check outputs for wanted frames and forward the requests.
1315
1316 The following AVFilterLink fields are used for activation:
1317
1318 - frame_wanted_out:
1319
1320 This field indicates if a frame is needed on this input of the
1321 destination filter. A positive value indicates that a frame is needed
1322 to process queued frames or internal data or to satisfy the
1323 application; a zero value indicates that a frame is not especially
1324 needed but could be processed anyway; a negative value indicates that a
1325 frame would just be queued.
1326
1327 It is set by filters using ff_request_frame() or ff_request_no_frame(),
1328 when requested by the application through a specific API or when it is
1329 set on one of the outputs.
1330
1331 It is cleared when a frame is sent from the source using
1332 ff_filter_frame().
1333
1334 It is also cleared when a status change is sent from the source using
1335 ff_avfilter_link_set_in_status().
1336
1337 - frame_blocked_in:
1338
1339 This field means that the source filter can not generate a frame as is.
1340 Its goal is to avoid repeatedly calling the request_frame() method on
1341 the same link.
1342
1343 It is set by the framework on all outputs of a filter before activating it.
1344
1345 It is automatically cleared by ff_filter_frame().
1346
1347 It is also automatically cleared by ff_avfilter_link_set_in_status().
1348
1349 It is also cleared on all outputs (using filter_unblock()) when
1350 something happens on an input: processing a frame or changing the
1351 status.
1352
1353 - fifo:
1354
1355 Contains the frames queued on a filter input. If it contains frames and
1356 frame_wanted_out is not set, then the filter can be activated. If that
1357 result in the filter not able to use these frames, the filter must set
1358 frame_wanted_out to ask for more frames.
1359
1360 - status_in and status_in_pts:
1361
1362 Status (EOF or error code) of the link and timestamp of the status
1363 change (in link time base, same as frames) as seen from the input of
1364 the link. The status change is considered happening after the frames
1365 queued in fifo.
1366
1367 It is set by the source filter using ff_avfilter_link_set_in_status().
1368
1369 - status_out:
1370
1371 Status of the link as seen from the output of the link. The status
1372 change is considered having already happened.
1373
1374 It is set by the destination filter using
1375 link_set_out_status().
1376
1377 Filters are activated according to the ready field, set using the
1378 ff_filter_set_ready(). Eventually, a priority queue will be used.
1379 ff_filter_set_ready() is called whenever anything could cause progress to
1380 be possible. Marking a filter ready when it is not is not a problem,
1381 except for the small overhead it causes.
1382
1383 Conditions that cause a filter to be marked ready are:
1384
1385 - frames added on an input link;
1386
1387 - changes in the input or output status of an input link;
1388
1389 - requests for a frame on an output link;
1390
1391 - after any actual processing using the legacy methods (filter_frame(),
1392 and request_frame() to acknowledge status changes), to run once more
1393 and check if enough input was present for several frames.
1394
1395 Examples of scenarios to consider:
1396
1397 - buffersrc: activate if frame_wanted_out to notify the application;
1398 activate when the application adds a frame to push it immediately.
1399
1400 - testsrc: activate only if frame_wanted_out to produce and push a frame.
1401
1402 - concat (not at stitch points): can process a frame on any output.
1403 Activate if frame_wanted_out on output to forward on the corresponding
1404 input. Activate when a frame is present on input to process it
1405 immediately.
1406
1407 - framesync: needs at least one frame on each input; extra frames on the
1408 wrong input will accumulate. When a frame is first added on one input,
1409 set frame_wanted_out<0 on it to avoid getting more (would trigger
1410 testsrc) and frame_wanted_out>0 on the other to allow processing it.
1411
1412 Activation of old filters:
1413
1414 In order to activate a filter implementing the legacy filter_frame() and
1415 request_frame() methods, perform the first possible of the following
1416 actions:
1417
1418 - If an input has frames in fifo and frame_wanted_out == 0, dequeue a
1419 frame and call filter_frame().
1420
1421 Rationale: filter frames as soon as possible instead of leaving them
1422 queued; frame_wanted_out < 0 is not possible since the old API does not
1423 set it nor provides any similar feedback; frame_wanted_out > 0 happens
1424 when min_samples > 0 and there are not enough samples queued.
1425
1426 - If an input has status_in set but not status_out, try to call
1427 request_frame() on one of the outputs in the hope that it will trigger
1428 request_frame() on the input with status_in and acknowledge it. This is
1429 awkward and fragile, filters with several inputs or outputs should be
1430 updated to direct activation as soon as possible.
1431
1432 - If an output has frame_wanted_out > 0 and not frame_blocked_in, call
1433 request_frame().
1434
1435 Rationale: checking frame_blocked_in is necessary to avoid requesting
1436 repeatedly on a blocked input if another is not blocked (example:
1437 [buffersrc1][testsrc1][buffersrc2][testsrc2]concat=v=2).
1438
1439 - If an output has frame_wanted_out > 0 call request_frame().
1440
1441 Rationale: even if all inputs are blocked an activate callback should
1442 request a frame on some if its inputs if a frame is requested on any of
1443 its output.
1444
1445 - Request a frame on the input for sinks.
1446
1447 Rationale: sinks using the old api have no way to request a frame on their
1448 input, so we need to do it for them.
1449 */
1450
1451 4301266 int ff_filter_activate(AVFilterContext *filter)
1452 {
1453 4301266 FFFilterContext *ctxi = fffilterctx(filter);
1454 4301266 const FFFilter *const fi = fffilter(filter->filter);
1455 int ret;
1456
1457 /* Generic timeline support is not yet implemented but should be easy */
1458 av_assert1(!(fi->p.flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC &&
1459 fi->activate));
1460 4301266 ctxi->ready = 0;
1461
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 4301266 ret = fi->activate ? fi->activate(filter) : filter_activate_default(filter);
1462
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 4301266 if (ret == FFERROR_NOT_READY)
1463 819367 ret = 0;
1464 4301266 return ret;
1465 }
1466
1467 3872027 int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
1468 {
1469 3872027 FilterLinkInternal * const li = ff_link_internal(link);
1470 3872027 *rpts = li->l.current_pts;
1471
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 3872027 if (ff_framequeue_queued_frames(&li->fifo))
1472 2169 return *rstatus = 0;
1473
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 3869858 if (li->status_out)
1474 8078 return *rstatus = li->status_out;
1475
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 3861780 if (!li->status_in)
1476 3853607 return *rstatus = 0;
1477 8173 *rstatus = li->status_out = li->status_in;
1478 8173 update_link_current_pts(li, li->status_in_pts);
1479 8173 *rpts = li->l.current_pts;
1480 8173 return 1;
1481 }
1482
1483 1934 size_t ff_inlink_queued_frames(AVFilterLink *link)
1484 {
1485 1934 FilterLinkInternal * const li = ff_link_internal(link);
1486 1934 return ff_framequeue_queued_frames(&li->fifo);
1487 }
1488
1489 5588453 int ff_inlink_check_available_frame(AVFilterLink *link)
1490 {
1491 5588453 FilterLinkInternal * const li = ff_link_internal(link);
1492 5588453 return ff_framequeue_queued_frames(&li->fifo) > 0;
1493 }
1494
1495 8529 int ff_inlink_queued_samples(AVFilterLink *link)
1496 {
1497 8529 FilterLinkInternal * const li = ff_link_internal(link);
1498 8529 return ff_framequeue_queued_samples(&li->fifo);
1499 }
1500
1501 4844 int ff_inlink_check_available_samples(AVFilterLink *link, unsigned min)
1502 {
1503 4844 FilterLinkInternal * const li = ff_link_internal(link);
1504 4844 uint64_t samples = ff_framequeue_queued_samples(&li->fifo);
1505 av_assert1(min);
1506
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 4844 return samples >= min || (li->status_in && samples);
1507 }
1508
1509 1726622 static void consume_update(FilterLinkInternal *li, const AVFrame *frame)
1510 {
1511 1726622 AVFilterLink *const link = &li->l.pub;
1512 1726622 update_link_current_pts(li, frame->pts);
1513 1726622 ff_inlink_process_commands(link, frame);
1514
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 1726622 if (link == link->dst->inputs[0])
1515 1723891 link->dst->is_disabled = !evaluate_timeline_at_frame(link, frame);
1516 1726622 li->l.frame_count_out++;
1517 1726622 li->l.sample_count_out += frame->nb_samples;
1518 1726622 }
1519
1520 5586192 int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
1521 {
1522 5586192 FilterLinkInternal * const li = ff_link_internal(link);
1523 AVFrame *frame;
1524
1525 5586192 *rframe = NULL;
1526
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 5586192 if (!ff_inlink_check_available_frame(link))
1527 3862501 return 0;
1528
1529
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 1723691 if (li->fifo.samples_skipped) {
1530 4 frame = ff_framequeue_peek(&li->fifo, 0);
1531 4 return ff_inlink_consume_samples(link, frame->nb_samples, frame->nb_samples, rframe);
1532 }
1533
1534 1723687 frame = ff_framequeue_take(&li->fifo);
1535 1723687 consume_update(li, frame);
1536 1723687 *rframe = frame;
1537 1723687 return 1;
1538 }
1539
1540 4840 int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max,
1541 AVFrame **rframe)
1542 {
1543 4840 FilterLinkInternal * const li = ff_link_internal(link);
1544 AVFrame *frame;
1545 int ret;
1546
1547 av_assert1(min);
1548 4840 *rframe = NULL;
1549
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 4840 if (!ff_inlink_check_available_samples(link, min))
1550 1905 return 0;
1551
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 2935 if (li->status_in)
1552
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 19 min = FFMIN(min, ff_framequeue_queued_samples(&li->fifo));
1553 2935 ret = take_samples(li, min, max, &frame);
1554
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 2935 if (ret < 0)
1555 ✗ return ret;
1556 2935 consume_update(li, frame);
1557 2935 *rframe = frame;
1558 2935 return 1;
1559 }
1560
1561 210 AVFrame *ff_inlink_peek_frame(AVFilterLink *link, size_t idx)
1562 {
1563 210 FilterLinkInternal * const li = ff_link_internal(link);
1564 210 return ff_framequeue_peek(&li->fifo, idx);
1565 }
1566
1567 5190 int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
1568 {
1569 5190 AVFrame *frame = *rframe;
1570 AVFrame *out;
1571 int ret;
1572
1573
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 5190 if (av_frame_is_writable(frame))
1574 2293 return 0;
1575 2897 av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n");
1576
1577
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 2897 switch (link->type) {
1578 2897 case AVMEDIA_TYPE_VIDEO:
1579 2897 out = ff_get_video_buffer(link, link->w, link->h);
1580 2897 break;
1581 ✗ case AVMEDIA_TYPE_AUDIO:
1582 ✗ out = ff_get_audio_buffer(link, frame->nb_samples);
1583 ✗ break;
1584 ✗ default:
1585 ✗ return AVERROR(EINVAL);
1586 }
1587
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 2897 if (!out)
1588 ✗ return AVERROR(ENOMEM);
1589
1590 2897 ret = av_frame_copy_props(out, frame);
1591
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 2897 if (ret < 0) {
1592 ✗ av_frame_free(&out);
1593 ✗ return ret;
1594 }
1595
1596 2897 ret = av_frame_copy(out, frame);
1597
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 2897 if (ret < 0) {
1598 ✗ av_frame_free(&out);
1599 ✗ return ret;
1600 }
1601
1602 2897 av_frame_free(&frame);
1603 2897 *rframe = out;
1604 2897 return 0;
1605 }
1606
1607 2550245 int ff_inlink_process_commands(AVFilterLink *link, const AVFrame *frame)
1608 {
1609 2550245 FFFilterContext *ctxi = fffilterctx(link->dst);
1610 2550245 AVFilterCommand *cmd = ctxi->command_queue;
1611
1612
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 2550245 while(cmd && cmd->time <= frame->pts * av_q2d(link->time_base)){
1613 ✗ av_log(link->dst, AV_LOG_DEBUG,
1614 "Processing command time:%f command:%s arg:%s\n",
1615 cmd->time, cmd->command, cmd->arg);
1616 ✗ avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags);
1617 ✗ command_queue_pop(link->dst);
1618 ✗ cmd = ctxi->command_queue;
1619 }
1620 2550245 return 0;
1621 }
1622
1623 909336 void ff_inlink_request_frame(AVFilterLink *link)
1624 {
1625 909336 av_unused FilterLinkInternal *li = ff_link_internal(link);
1626 av_assert1(!li->status_in);
1627 av_assert1(!li->status_out);
1628 909336 li->frame_wanted_out = 1;
1629 909336 ff_filter_set_ready(link->src, 100);
1630 909336 }
1631
1632 11328 void ff_inlink_set_status(AVFilterLink *link, int status)
1633 {
1634 11328 FilterLinkInternal * const li = ff_link_internal(link);
1635
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 11328 if (li->status_out)
1636 8786 return;
1637 2542 li->frame_wanted_out = 0;
1638 2542 li->frame_blocked_in = 0;
1639 2542 link_set_out_status(link, status, AV_NOPTS_VALUE);
1640
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 2551 while (ff_framequeue_queued_frames(&li->fifo)) {
1641 9 AVFrame *frame = ff_framequeue_take(&li->fifo);
1642 9 av_frame_free(&frame);
1643 }
1644
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 2542 if (!li->status_in)
1645 2538 li->status_in = status;
1646 }
1647
1648 4224467 int ff_outlink_get_status(AVFilterLink *link)
1649 {
1650 4224467 FilterLinkInternal * const li = ff_link_internal(link);
1651 4224467 return li->status_in;
1652 }
1653
1654 1776 int ff_inoutlink_check_flow(AVFilterLink *inlink, AVFilterLink *outlink)
1655 {
1656 1776 FilterLinkInternal * const li_in = ff_link_internal(inlink);
1657
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 2902 return ff_outlink_frame_wanted(outlink) ||
1658
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 2902 ff_inlink_check_available_frame(inlink) ||
1659
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 1056 li_in->status_out;
1660 }
1661
1662
1663 ✗ const AVClass *avfilter_get_class(void)
1664 {
1665 ✗ return &avfilter_class;
1666 }
1667
1668 ✗ int ff_filter_init_hw_frames(AVFilterContext *avctx, AVFilterLink *link,
1669 int default_pool_size)
1670 {
1671 ✗ FilterLink *l = ff_filter_link(link);
1672 AVHWFramesContext *frames;
1673
1674 // Must already be set by caller.
1675 ✗ av_assert0(l->hw_frames_ctx);
1676
1677 ✗ frames = (AVHWFramesContext*)l->hw_frames_ctx->data;
1678
1679 ✗ if (frames->initial_pool_size == 0) {
1680 // Dynamic allocation is necessarily supported.
1681 ✗ } else if (avctx->extra_hw_frames >= 0) {
1682 ✗ frames->initial_pool_size += avctx->extra_hw_frames;
1683 } else {
1684 ✗ frames->initial_pool_size = default_pool_size;
1685 }
1686
1687 ✗ return 0;
1688 }
1689
1690 494560 int ff_outlink_frame_wanted(AVFilterLink *link)
1691 {
1692 494560 FilterLinkInternal * const li = ff_link_internal(link);
1693 494560 return li->frame_wanted_out;
1694 }
1695
1696 5102 int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func,
1697 void *arg, int *ret, int nb_jobs)
1698 {
1699 5102 return fffilterctx(ctx)->execute(ctx, func, arg, ret, nb_jobs);
1700 }
1701