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1 | /* |
2 | * filter graphs | |
3 | * Copyright (c) 2008 Vitor Sessak | |
4 | * Copyright (c) 2007 Bobby Bingham | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include "config.h" | |
24 | ||
25 | #include <string.h> | |
26 | ||
27 | #include "libavutil/avassert.h" | |
28 | #include "libavutil/avstring.h" | |
29 | #include "libavutil/bprint.h" | |
30 | #include "libavutil/channel_layout.h" | |
31 | #include "libavutil/internal.h" | |
32 | #include "libavutil/opt.h" | |
33 | #include "libavutil/pixdesc.h" | |
34 | ||
35 | #include "avfilter.h" | |
36 | #include "formats.h" | |
37 | #include "internal.h" | |
38 | #include "thread.h" | |
39 | ||
40 | #define OFFSET(x) offsetof(AVFilterGraph, x) | |
41 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM | |
42 | static const AVOption filtergraph_options[] = { | |
43 | { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS, | |
44 | { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, "thread_type" }, | |
45 | { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = FLAGS, .unit = "thread_type" }, | |
46 | { "threads", "Maximum number of threads", OFFSET(nb_threads), | |
47 | AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, | |
48 | {"scale_sws_opts" , "default scale filter options" , OFFSET(scale_sws_opts) , | |
49 | AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, | |
50 | {"aresample_swr_opts" , "default aresample filter options" , OFFSET(aresample_swr_opts) , | |
51 | AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, | |
52 | { NULL }, | |
53 | }; | |
54 | ||
55 | static const AVClass filtergraph_class = { | |
56 | .class_name = "AVFilterGraph", | |
57 | .item_name = av_default_item_name, | |
58 | .version = LIBAVUTIL_VERSION_INT, | |
59 | .option = filtergraph_options, | |
60 | .category = AV_CLASS_CATEGORY_FILTER, | |
61 | }; | |
62 | ||
63 | #if !HAVE_THREADS | |
64 | void ff_graph_thread_free(AVFilterGraph *graph) | |
65 | { | |
66 | } | |
67 | ||
68 | int ff_graph_thread_init(AVFilterGraph *graph) | |
69 | { | |
70 | graph->thread_type = 0; | |
71 | graph->nb_threads = 1; | |
72 | return 0; | |
73 | } | |
74 | #endif | |
75 | ||
76 | AVFilterGraph *avfilter_graph_alloc(void) | |
77 | { | |
78 | AVFilterGraph *ret = av_mallocz(sizeof(*ret)); | |
79 | if (!ret) | |
80 | return NULL; | |
81 | ||
82 | ret->internal = av_mallocz(sizeof(*ret->internal)); | |
83 | if (!ret->internal) { | |
84 | av_freep(&ret); | |
85 | return NULL; | |
86 | } | |
87 | ||
88 | ret->av_class = &filtergraph_class; | |
89 | av_opt_set_defaults(ret); | |
90 | ||
91 | return ret; | |
92 | } | |
93 | ||
94 | void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter) | |
95 | { | |
96 | int i; | |
97 | for (i = 0; i < graph->nb_filters; i++) { | |
98 | if (graph->filters[i] == filter) { | |
99 | FFSWAP(AVFilterContext*, graph->filters[i], | |
100 | graph->filters[graph->nb_filters - 1]); | |
101 | graph->nb_filters--; | |
102 | return; | |
103 | } | |
104 | } | |
105 | } | |
106 | ||
107 | void avfilter_graph_free(AVFilterGraph **graph) | |
108 | { | |
109 | if (!*graph) | |
110 | return; | |
111 | ||
112 | while ((*graph)->nb_filters) | |
113 | avfilter_free((*graph)->filters[0]); | |
114 | ||
115 | ff_graph_thread_free(*graph); | |
116 | ||
117 | av_freep(&(*graph)->sink_links); | |
118 | ||
119 | av_freep(&(*graph)->scale_sws_opts); | |
120 | av_freep(&(*graph)->aresample_swr_opts); | |
121 | av_freep(&(*graph)->resample_lavr_opts); | |
122 | av_freep(&(*graph)->filters); | |
123 | av_freep(&(*graph)->internal); | |
124 | av_freep(graph); | |
125 | } | |
126 | ||
127 | #if FF_API_AVFILTER_OPEN | |
128 | int avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter) | |
129 | { | |
130 | AVFilterContext **filters = av_realloc(graph->filters, | |
131 | sizeof(*filters) * (graph->nb_filters + 1)); | |
132 | if (!filters) | |
133 | return AVERROR(ENOMEM); | |
134 | ||
135 | graph->filters = filters; | |
136 | graph->filters[graph->nb_filters++] = filter; | |
137 | ||
138 | #if FF_API_FOO_COUNT | |
139 | FF_DISABLE_DEPRECATION_WARNINGS | |
140 | graph->filter_count_unused = graph->nb_filters; | |
141 | FF_ENABLE_DEPRECATION_WARNINGS | |
142 | #endif | |
143 | ||
144 | filter->graph = graph; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | #endif | |
149 | ||
150 | int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt, | |
151 | const char *name, const char *args, void *opaque, | |
152 | AVFilterGraph *graph_ctx) | |
153 | { | |
154 | int ret; | |
155 | ||
156 | *filt_ctx = avfilter_graph_alloc_filter(graph_ctx, filt, name); | |
157 | if (!*filt_ctx) | |
158 | return AVERROR(ENOMEM); | |
159 | ||
160 | ret = avfilter_init_str(*filt_ctx, args); | |
161 | if (ret < 0) | |
162 | goto fail; | |
163 | ||
164 | return 0; | |
165 | ||
166 | fail: | |
167 | if (*filt_ctx) | |
168 | avfilter_free(*filt_ctx); | |
169 | *filt_ctx = NULL; | |
170 | return ret; | |
171 | } | |
172 | ||
173 | void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags) | |
174 | { | |
175 | graph->disable_auto_convert = flags; | |
176 | } | |
177 | ||
178 | AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph, | |
179 | const AVFilter *filter, | |
180 | const char *name) | |
181 | { | |
182 | AVFilterContext **filters, *s; | |
183 | ||
184 | if (graph->thread_type && !graph->internal->thread_execute) { | |
185 | if (graph->execute) { | |
186 | graph->internal->thread_execute = graph->execute; | |
187 | } else { | |
188 | int ret = ff_graph_thread_init(graph); | |
189 | if (ret < 0) { | |
190 | av_log(graph, AV_LOG_ERROR, "Error initializing threading.\n"); | |
191 | return NULL; | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | s = ff_filter_alloc(filter, name); | |
197 | if (!s) | |
198 | return NULL; | |
199 | ||
200 | filters = av_realloc(graph->filters, sizeof(*filters) * (graph->nb_filters + 1)); | |
201 | if (!filters) { | |
202 | avfilter_free(s); | |
203 | return NULL; | |
204 | } | |
205 | ||
206 | graph->filters = filters; | |
207 | graph->filters[graph->nb_filters++] = s; | |
208 | ||
209 | #if FF_API_FOO_COUNT | |
210 | FF_DISABLE_DEPRECATION_WARNINGS | |
211 | graph->filter_count_unused = graph->nb_filters; | |
212 | FF_ENABLE_DEPRECATION_WARNINGS | |
213 | #endif | |
214 | ||
215 | s->graph = graph; | |
216 | ||
217 | return s; | |
218 | } | |
219 | ||
220 | /** | |
221 | * Check for the validity of graph. | |
222 | * | |
223 | * A graph is considered valid if all its input and output pads are | |
224 | * connected. | |
225 | * | |
226 | * @return >= 0 in case of success, a negative value otherwise | |
227 | */ | |
228 | static int graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx) | |
229 | { | |
230 | AVFilterContext *filt; | |
231 | int i, j; | |
232 | ||
233 | for (i = 0; i < graph->nb_filters; i++) { | |
234 | const AVFilterPad *pad; | |
235 | filt = graph->filters[i]; | |
236 | ||
237 | for (j = 0; j < filt->nb_inputs; j++) { | |
238 | if (!filt->inputs[j] || !filt->inputs[j]->src) { | |
239 | pad = &filt->input_pads[j]; | |
240 | av_log(log_ctx, AV_LOG_ERROR, | |
241 | "Input pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any source\n", | |
242 | pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); | |
243 | return AVERROR(EINVAL); | |
244 | } | |
245 | } | |
246 | ||
247 | for (j = 0; j < filt->nb_outputs; j++) { | |
248 | if (!filt->outputs[j] || !filt->outputs[j]->dst) { | |
249 | pad = &filt->output_pads[j]; | |
250 | av_log(log_ctx, AV_LOG_ERROR, | |
251 | "Output pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any destination\n", | |
252 | pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name); | |
253 | return AVERROR(EINVAL); | |
254 | } | |
255 | } | |
256 | } | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | /** | |
262 | * Configure all the links of graphctx. | |
263 | * | |
264 | * @return >= 0 in case of success, a negative value otherwise | |
265 | */ | |
266 | static int graph_config_links(AVFilterGraph *graph, AVClass *log_ctx) | |
267 | { | |
268 | AVFilterContext *filt; | |
269 | int i, ret; | |
270 | ||
271 | for (i = 0; i < graph->nb_filters; i++) { | |
272 | filt = graph->filters[i]; | |
273 | ||
274 | if (!filt->nb_outputs) { | |
275 | if ((ret = avfilter_config_links(filt))) | |
276 | return ret; | |
277 | } | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *name) | |
284 | { | |
285 | int i; | |
286 | ||
287 | for (i = 0; i < graph->nb_filters; i++) | |
288 | if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name)) | |
289 | return graph->filters[i]; | |
290 | ||
291 | return NULL; | |
292 | } | |
293 | ||
294 | static void sanitize_channel_layouts(void *log, AVFilterChannelLayouts *l) | |
295 | { | |
296 | if (!l) | |
297 | return; | |
298 | if (l->nb_channel_layouts) { | |
299 | if (l->all_layouts || l->all_counts) | |
300 | av_log(log, AV_LOG_WARNING, "All layouts set on non-empty list\n"); | |
301 | l->all_layouts = l->all_counts = 0; | |
302 | } else { | |
303 | if (l->all_counts && !l->all_layouts) | |
304 | av_log(log, AV_LOG_WARNING, "All counts without all layouts\n"); | |
305 | l->all_layouts = 1; | |
306 | } | |
307 | } | |
308 | ||
309 | static int filter_query_formats(AVFilterContext *ctx) | |
310 | { | |
311 | int ret, i; | |
312 | AVFilterFormats *formats; | |
313 | AVFilterChannelLayouts *chlayouts; | |
314 | AVFilterFormats *samplerates; | |
315 | enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type : | |
316 | ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type : | |
317 | AVMEDIA_TYPE_VIDEO; | |
318 | ||
319 | if ((ret = ctx->filter->query_formats(ctx)) < 0) { | |
320 | if (ret != AVERROR(EAGAIN)) | |
321 | av_log(ctx, AV_LOG_ERROR, "Query format failed for '%s': %s\n", | |
322 | ctx->name, av_err2str(ret)); | |
323 | return ret; | |
324 | } | |
325 | ||
326 | for (i = 0; i < ctx->nb_inputs; i++) | |
327 | sanitize_channel_layouts(ctx, ctx->inputs[i]->out_channel_layouts); | |
328 | for (i = 0; i < ctx->nb_outputs; i++) | |
329 | sanitize_channel_layouts(ctx, ctx->outputs[i]->in_channel_layouts); | |
330 | ||
331 | formats = ff_all_formats(type); | |
332 | if (!formats) | |
333 | return AVERROR(ENOMEM); | |
334 | ff_set_common_formats(ctx, formats); | |
335 | if (type == AVMEDIA_TYPE_AUDIO) { | |
336 | samplerates = ff_all_samplerates(); | |
337 | if (!samplerates) | |
338 | return AVERROR(ENOMEM); | |
339 | ff_set_common_samplerates(ctx, samplerates); | |
340 | chlayouts = ff_all_channel_layouts(); | |
341 | if (!chlayouts) | |
342 | return AVERROR(ENOMEM); | |
343 | ff_set_common_channel_layouts(ctx, chlayouts); | |
344 | } | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int formats_declared(AVFilterContext *f) | |
349 | { | |
350 | int i; | |
351 | ||
352 | for (i = 0; i < f->nb_inputs; i++) { | |
353 | if (!f->inputs[i]->out_formats) | |
354 | return 0; | |
355 | if (f->inputs[i]->type == AVMEDIA_TYPE_AUDIO && | |
356 | !(f->inputs[i]->out_samplerates && | |
357 | f->inputs[i]->out_channel_layouts)) | |
358 | return 0; | |
359 | } | |
360 | for (i = 0; i < f->nb_outputs; i++) { | |
361 | if (!f->outputs[i]->in_formats) | |
362 | return 0; | |
363 | if (f->outputs[i]->type == AVMEDIA_TYPE_AUDIO && | |
364 | !(f->outputs[i]->in_samplerates && | |
365 | f->outputs[i]->in_channel_layouts)) | |
366 | return 0; | |
367 | } | |
368 | return 1; | |
369 | } | |
370 | ||
371 | static AVFilterFormats *clone_filter_formats(AVFilterFormats *arg) | |
372 | { | |
373 | AVFilterFormats *a = av_memdup(arg, sizeof(*arg)); | |
374 | if (a) { | |
375 | a->refcount = 0; | |
376 | a->refs = NULL; | |
377 | a->formats = av_memdup(a->formats, sizeof(*a->formats) * a->nb_formats); | |
378 | if (!a->formats && arg->formats) | |
379 | av_freep(&a); | |
380 | } | |
381 | return a; | |
382 | } | |
383 | ||
384 | static int can_merge_formats(AVFilterFormats *a_arg, | |
385 | AVFilterFormats *b_arg, | |
386 | enum AVMediaType type, | |
387 | int is_sample_rate) | |
388 | { | |
389 | AVFilterFormats *a, *b, *ret; | |
390 | if (a_arg == b_arg) | |
391 | return 1; | |
392 | a = clone_filter_formats(a_arg); | |
393 | b = clone_filter_formats(b_arg); | |
394 | ||
395 | if (!a || !b) { | |
396 | if (a) | |
397 | av_freep(&a->formats); | |
398 | if (b) | |
399 | av_freep(&b->formats); | |
400 | ||
401 | av_freep(&a); | |
402 | av_freep(&b); | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | if (is_sample_rate) { | |
408 | ret = ff_merge_samplerates(a, b); | |
409 | } else { | |
410 | ret = ff_merge_formats(a, b, type); | |
411 | } | |
412 | if (ret) { | |
413 | av_freep(&ret->formats); | |
414 | av_freep(&ret->refs); | |
415 | av_freep(&ret); | |
416 | return 1; | |
417 | } else { | |
418 | av_freep(&a->formats); | |
419 | av_freep(&b->formats); | |
420 | av_freep(&a); | |
421 | av_freep(&b); | |
422 | return 0; | |
423 | } | |
424 | } | |
425 | ||
426 | /** | |
427 | * Perform one round of query_formats() and merging formats lists on the | |
428 | * filter graph. | |
429 | * @return >=0 if all links formats lists could be queried and merged; | |
430 | * AVERROR(EAGAIN) some progress was made in the queries or merging | |
431 | * and a later call may succeed; | |
432 | * AVERROR(EIO) (may be changed) plus a log message if no progress | |
433 | * was made and the negotiation is stuck; | |
434 | * a negative error code if some other error happened | |
435 | */ | |
436 | static int query_formats(AVFilterGraph *graph, AVClass *log_ctx) | |
437 | { | |
438 | int i, j, ret; | |
439 | int scaler_count = 0, resampler_count = 0; | |
440 | int count_queried = 0; /* successful calls to query_formats() */ | |
441 | int count_merged = 0; /* successful merge of formats lists */ | |
442 | int count_already_merged = 0; /* lists already merged */ | |
443 | int count_delayed = 0; /* lists that need to be merged later */ | |
444 | ||
445 | for (i = 0; i < graph->nb_filters; i++) { | |
446 | AVFilterContext *f = graph->filters[i]; | |
447 | if (formats_declared(f)) | |
448 | continue; | |
449 | if (f->filter->query_formats) | |
450 | ret = filter_query_formats(f); | |
451 | else | |
452 | ret = ff_default_query_formats(f); | |
453 | if (ret < 0 && ret != AVERROR(EAGAIN)) | |
454 | return ret; | |
455 | /* note: EAGAIN could indicate a partial success, not counted yet */ | |
456 | count_queried += ret >= 0; | |
457 | } | |
458 | ||
459 | /* go through and merge as many format lists as possible */ | |
460 | for (i = 0; i < graph->nb_filters; i++) { | |
461 | AVFilterContext *filter = graph->filters[i]; | |
462 | ||
463 | for (j = 0; j < filter->nb_inputs; j++) { | |
464 | AVFilterLink *link = filter->inputs[j]; | |
465 | int convert_needed = 0; | |
466 | ||
467 | if (!link) | |
468 | continue; | |
469 | ||
470 | if (link->in_formats != link->out_formats | |
471 | && link->in_formats && link->out_formats) | |
472 | if (!can_merge_formats(link->in_formats, link->out_formats, | |
473 | link->type, 0)) | |
474 | convert_needed = 1; | |
475 | if (link->type == AVMEDIA_TYPE_AUDIO) { | |
476 | if (link->in_samplerates != link->out_samplerates | |
477 | && link->in_samplerates && link->out_samplerates) | |
478 | if (!can_merge_formats(link->in_samplerates, | |
479 | link->out_samplerates, | |
480 | 0, 1)) | |
481 | convert_needed = 1; | |
482 | } | |
483 | ||
484 | #define MERGE_DISPATCH(field, statement) \ | |
485 | if (!(link->in_ ## field && link->out_ ## field)) { \ | |
486 | count_delayed++; \ | |
487 | } else if (link->in_ ## field == link->out_ ## field) { \ | |
488 | count_already_merged++; \ | |
489 | } else if (!convert_needed) { \ | |
490 | count_merged++; \ | |
491 | statement \ | |
492 | } | |
493 | ||
494 | if (link->type == AVMEDIA_TYPE_AUDIO) { | |
495 | MERGE_DISPATCH(channel_layouts, | |
496 | if (!ff_merge_channel_layouts(link->in_channel_layouts, | |
497 | link->out_channel_layouts)) | |
498 | convert_needed = 1; | |
499 | ) | |
500 | MERGE_DISPATCH(samplerates, | |
501 | if (!ff_merge_samplerates(link->in_samplerates, | |
502 | link->out_samplerates)) | |
503 | convert_needed = 1; | |
504 | ) | |
505 | } | |
506 | MERGE_DISPATCH(formats, | |
507 | if (!ff_merge_formats(link->in_formats, link->out_formats, | |
508 | link->type)) | |
509 | convert_needed = 1; | |
510 | ) | |
511 | #undef MERGE_DISPATCH | |
512 | ||
513 | if (convert_needed) { | |
514 | AVFilterContext *convert; | |
515 | AVFilter *filter; | |
516 | AVFilterLink *inlink, *outlink; | |
517 | char scale_args[256]; | |
518 | char inst_name[30]; | |
519 | ||
520 | /* couldn't merge format lists. auto-insert conversion filter */ | |
521 | switch (link->type) { | |
522 | case AVMEDIA_TYPE_VIDEO: | |
523 | if (!(filter = avfilter_get_by_name("scale"))) { | |
524 | av_log(log_ctx, AV_LOG_ERROR, "'scale' filter " | |
525 | "not present, cannot convert pixel formats.\n"); | |
526 | return AVERROR(EINVAL); | |
527 | } | |
528 | ||
529 | snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d", | |
530 | scaler_count++); | |
531 | ||
532 | if ((ret = avfilter_graph_create_filter(&convert, filter, | |
533 | inst_name, graph->scale_sws_opts, NULL, | |
534 | graph)) < 0) | |
535 | return ret; | |
536 | break; | |
537 | case AVMEDIA_TYPE_AUDIO: | |
538 | if (!(filter = avfilter_get_by_name("aresample"))) { | |
539 | av_log(log_ctx, AV_LOG_ERROR, "'aresample' filter " | |
540 | "not present, cannot convert audio formats.\n"); | |
541 | return AVERROR(EINVAL); | |
542 | } | |
543 | ||
544 | snprintf(inst_name, sizeof(inst_name), "auto-inserted resampler %d", | |
545 | resampler_count++); | |
546 | scale_args[0] = '\0'; | |
547 | if (graph->aresample_swr_opts) | |
548 | snprintf(scale_args, sizeof(scale_args), "%s", | |
549 | graph->aresample_swr_opts); | |
550 | if ((ret = avfilter_graph_create_filter(&convert, filter, | |
551 | inst_name, graph->aresample_swr_opts, | |
552 | NULL, graph)) < 0) | |
553 | return ret; | |
554 | break; | |
555 | default: | |
556 | return AVERROR(EINVAL); | |
557 | } | |
558 | ||
559 | if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0) | |
560 | return ret; | |
561 | ||
f6fa7814 DM |
562 | if ((ret = filter_query_formats(convert)) < 0) |
563 | return ret; | |
564 | ||
2ba45a60 DM |
565 | inlink = convert->inputs[0]; |
566 | outlink = convert->outputs[0]; | |
567 | av_assert0( inlink-> in_formats->refcount > 0); | |
568 | av_assert0( inlink->out_formats->refcount > 0); | |
569 | av_assert0(outlink-> in_formats->refcount > 0); | |
570 | av_assert0(outlink->out_formats->refcount > 0); | |
571 | if (outlink->type == AVMEDIA_TYPE_AUDIO) { | |
572 | av_assert0( inlink-> in_samplerates->refcount > 0); | |
573 | av_assert0( inlink->out_samplerates->refcount > 0); | |
574 | av_assert0(outlink-> in_samplerates->refcount > 0); | |
575 | av_assert0(outlink->out_samplerates->refcount > 0); | |
576 | av_assert0( inlink-> in_channel_layouts->refcount > 0); | |
577 | av_assert0( inlink->out_channel_layouts->refcount > 0); | |
578 | av_assert0(outlink-> in_channel_layouts->refcount > 0); | |
579 | av_assert0(outlink->out_channel_layouts->refcount > 0); | |
580 | } | |
581 | if (!ff_merge_formats( inlink->in_formats, inlink->out_formats, inlink->type) || | |
582 | !ff_merge_formats(outlink->in_formats, outlink->out_formats, outlink->type)) | |
583 | ret = AVERROR(ENOSYS); | |
584 | if (inlink->type == AVMEDIA_TYPE_AUDIO && | |
585 | (!ff_merge_samplerates(inlink->in_samplerates, | |
586 | inlink->out_samplerates) || | |
587 | !ff_merge_channel_layouts(inlink->in_channel_layouts, | |
588 | inlink->out_channel_layouts))) | |
589 | ret = AVERROR(ENOSYS); | |
590 | if (outlink->type == AVMEDIA_TYPE_AUDIO && | |
591 | (!ff_merge_samplerates(outlink->in_samplerates, | |
592 | outlink->out_samplerates) || | |
593 | !ff_merge_channel_layouts(outlink->in_channel_layouts, | |
594 | outlink->out_channel_layouts))) | |
595 | ret = AVERROR(ENOSYS); | |
596 | ||
597 | if (ret < 0) { | |
598 | av_log(log_ctx, AV_LOG_ERROR, | |
599 | "Impossible to convert between the formats supported by the filter " | |
600 | "'%s' and the filter '%s'\n", link->src->name, link->dst->name); | |
601 | return ret; | |
602 | } | |
603 | } | |
604 | } | |
605 | } | |
606 | ||
607 | av_log(graph, AV_LOG_DEBUG, "query_formats: " | |
608 | "%d queried, %d merged, %d already done, %d delayed\n", | |
609 | count_queried, count_merged, count_already_merged, count_delayed); | |
610 | if (count_delayed) { | |
611 | AVBPrint bp; | |
612 | ||
613 | /* if count_queried > 0, one filter at least did set its formats, | |
614 | that will give additional information to its neighbour; | |
615 | if count_merged > 0, one pair of formats lists at least was merged, | |
616 | that will give additional information to all connected filters; | |
617 | in both cases, progress was made and a new round must be done */ | |
618 | if (count_queried || count_merged) | |
619 | return AVERROR(EAGAIN); | |
620 | av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC); | |
621 | for (i = 0; i < graph->nb_filters; i++) | |
622 | if (!formats_declared(graph->filters[i])) | |
623 | av_bprintf(&bp, "%s%s", bp.len ? ", " : "", | |
624 | graph->filters[i]->name); | |
625 | av_log(graph, AV_LOG_ERROR, | |
626 | "The following filters could not choose their formats: %s\n" | |
627 | "Consider inserting the (a)format filter near their input or " | |
628 | "output.\n", bp.str); | |
629 | return AVERROR(EIO); | |
630 | } | |
631 | return 0; | |
632 | } | |
633 | ||
634 | static int pick_format(AVFilterLink *link, AVFilterLink *ref) | |
635 | { | |
636 | if (!link || !link->in_formats) | |
637 | return 0; | |
638 | ||
639 | if (link->type == AVMEDIA_TYPE_VIDEO) { | |
640 | if(ref && ref->type == AVMEDIA_TYPE_VIDEO){ | |
641 | int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2 == 0; | |
642 | enum AVPixelFormat best= AV_PIX_FMT_NONE; | |
643 | int i; | |
644 | for (i=0; i<link->in_formats->nb_formats; i++) { | |
645 | enum AVPixelFormat p = link->in_formats->formats[i]; | |
646 | best= av_find_best_pix_fmt_of_2(best, p, ref->format, has_alpha, NULL); | |
647 | } | |
648 | av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s alpha:%d\n", | |
649 | av_get_pix_fmt_name(best), link->in_formats->nb_formats, | |
650 | av_get_pix_fmt_name(ref->format), has_alpha); | |
651 | link->in_formats->formats[0] = best; | |
652 | } | |
653 | } | |
654 | ||
655 | link->in_formats->nb_formats = 1; | |
656 | link->format = link->in_formats->formats[0]; | |
657 | ||
658 | if (link->type == AVMEDIA_TYPE_AUDIO) { | |
659 | if (!link->in_samplerates->nb_formats) { | |
660 | av_log(link->src, AV_LOG_ERROR, "Cannot select sample rate for" | |
661 | " the link between filters %s and %s.\n", link->src->name, | |
662 | link->dst->name); | |
663 | return AVERROR(EINVAL); | |
664 | } | |
665 | link->in_samplerates->nb_formats = 1; | |
666 | link->sample_rate = link->in_samplerates->formats[0]; | |
667 | ||
668 | if (link->in_channel_layouts->all_layouts) { | |
669 | av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for" | |
670 | " the link between filters %s and %s.\n", link->src->name, | |
671 | link->dst->name); | |
672 | if (!link->in_channel_layouts->all_counts) | |
673 | av_log(link->src, AV_LOG_ERROR, "Unknown channel layouts not " | |
674 | "supported, try specifying a channel layout using " | |
675 | "'aformat=channel_layouts=something'.\n"); | |
676 | return AVERROR(EINVAL); | |
677 | } | |
678 | link->in_channel_layouts->nb_channel_layouts = 1; | |
679 | link->channel_layout = link->in_channel_layouts->channel_layouts[0]; | |
680 | if ((link->channels = FF_LAYOUT2COUNT(link->channel_layout))) | |
681 | link->channel_layout = 0; | |
682 | else | |
683 | link->channels = av_get_channel_layout_nb_channels(link->channel_layout); | |
684 | } | |
685 | ||
686 | ff_formats_unref(&link->in_formats); | |
687 | ff_formats_unref(&link->out_formats); | |
688 | ff_formats_unref(&link->in_samplerates); | |
689 | ff_formats_unref(&link->out_samplerates); | |
690 | ff_channel_layouts_unref(&link->in_channel_layouts); | |
691 | ff_channel_layouts_unref(&link->out_channel_layouts); | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | #define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \ | |
697 | do { \ | |
698 | for (i = 0; i < filter->nb_inputs; i++) { \ | |
699 | AVFilterLink *link = filter->inputs[i]; \ | |
700 | fmt_type fmt; \ | |
701 | \ | |
702 | if (!link->out_ ## list || link->out_ ## list->nb != 1) \ | |
703 | continue; \ | |
704 | fmt = link->out_ ## list->var[0]; \ | |
705 | \ | |
706 | for (j = 0; j < filter->nb_outputs; j++) { \ | |
707 | AVFilterLink *out_link = filter->outputs[j]; \ | |
708 | list_type *fmts; \ | |
709 | \ | |
710 | if (link->type != out_link->type || \ | |
711 | out_link->in_ ## list->nb == 1) \ | |
712 | continue; \ | |
713 | fmts = out_link->in_ ## list; \ | |
714 | \ | |
715 | if (!out_link->in_ ## list->nb) { \ | |
716 | add_format(&out_link->in_ ##list, fmt); \ | |
717 | ret = 1; \ | |
718 | break; \ | |
719 | } \ | |
720 | \ | |
721 | for (k = 0; k < out_link->in_ ## list->nb; k++) \ | |
722 | if (fmts->var[k] == fmt) { \ | |
723 | fmts->var[0] = fmt; \ | |
724 | fmts->nb = 1; \ | |
725 | ret = 1; \ | |
726 | break; \ | |
727 | } \ | |
728 | } \ | |
729 | } \ | |
730 | } while (0) | |
731 | ||
732 | static int reduce_formats_on_filter(AVFilterContext *filter) | |
733 | { | |
734 | int i, j, k, ret = 0; | |
735 | ||
736 | REDUCE_FORMATS(int, AVFilterFormats, formats, formats, | |
737 | nb_formats, ff_add_format); | |
738 | REDUCE_FORMATS(int, AVFilterFormats, samplerates, formats, | |
739 | nb_formats, ff_add_format); | |
740 | ||
741 | /* reduce channel layouts */ | |
742 | for (i = 0; i < filter->nb_inputs; i++) { | |
743 | AVFilterLink *inlink = filter->inputs[i]; | |
744 | uint64_t fmt; | |
745 | ||
746 | if (!inlink->out_channel_layouts || | |
747 | inlink->out_channel_layouts->nb_channel_layouts != 1) | |
748 | continue; | |
749 | fmt = inlink->out_channel_layouts->channel_layouts[0]; | |
750 | ||
751 | for (j = 0; j < filter->nb_outputs; j++) { | |
752 | AVFilterLink *outlink = filter->outputs[j]; | |
753 | AVFilterChannelLayouts *fmts; | |
754 | ||
755 | fmts = outlink->in_channel_layouts; | |
756 | if (inlink->type != outlink->type || fmts->nb_channel_layouts == 1) | |
757 | continue; | |
758 | ||
759 | if (fmts->all_layouts && | |
760 | (!FF_LAYOUT2COUNT(fmt) || fmts->all_counts)) { | |
761 | /* Turn the infinite list into a singleton */ | |
762 | fmts->all_layouts = fmts->all_counts = 0; | |
763 | ff_add_channel_layout(&outlink->in_channel_layouts, fmt); | |
764 | break; | |
765 | } | |
766 | ||
767 | for (k = 0; k < outlink->in_channel_layouts->nb_channel_layouts; k++) { | |
768 | if (fmts->channel_layouts[k] == fmt) { | |
769 | fmts->channel_layouts[0] = fmt; | |
770 | fmts->nb_channel_layouts = 1; | |
771 | ret = 1; | |
772 | break; | |
773 | } | |
774 | } | |
775 | } | |
776 | } | |
777 | ||
778 | return ret; | |
779 | } | |
780 | ||
781 | static void reduce_formats(AVFilterGraph *graph) | |
782 | { | |
783 | int i, reduced; | |
784 | ||
785 | do { | |
786 | reduced = 0; | |
787 | ||
788 | for (i = 0; i < graph->nb_filters; i++) | |
789 | reduced |= reduce_formats_on_filter(graph->filters[i]); | |
790 | } while (reduced); | |
791 | } | |
792 | ||
793 | static void swap_samplerates_on_filter(AVFilterContext *filter) | |
794 | { | |
795 | AVFilterLink *link = NULL; | |
796 | int sample_rate; | |
797 | int i, j; | |
798 | ||
799 | for (i = 0; i < filter->nb_inputs; i++) { | |
800 | link = filter->inputs[i]; | |
801 | ||
802 | if (link->type == AVMEDIA_TYPE_AUDIO && | |
803 | link->out_samplerates->nb_formats== 1) | |
804 | break; | |
805 | } | |
806 | if (i == filter->nb_inputs) | |
807 | return; | |
808 | ||
809 | sample_rate = link->out_samplerates->formats[0]; | |
810 | ||
811 | for (i = 0; i < filter->nb_outputs; i++) { | |
812 | AVFilterLink *outlink = filter->outputs[i]; | |
813 | int best_idx, best_diff = INT_MAX; | |
814 | ||
815 | if (outlink->type != AVMEDIA_TYPE_AUDIO || | |
816 | outlink->in_samplerates->nb_formats < 2) | |
817 | continue; | |
818 | ||
819 | for (j = 0; j < outlink->in_samplerates->nb_formats; j++) { | |
820 | int diff = abs(sample_rate - outlink->in_samplerates->formats[j]); | |
821 | ||
822 | if (diff < best_diff) { | |
823 | best_diff = diff; | |
824 | best_idx = j; | |
825 | } | |
826 | } | |
827 | FFSWAP(int, outlink->in_samplerates->formats[0], | |
828 | outlink->in_samplerates->formats[best_idx]); | |
829 | } | |
830 | } | |
831 | ||
832 | static void swap_samplerates(AVFilterGraph *graph) | |
833 | { | |
834 | int i; | |
835 | ||
836 | for (i = 0; i < graph->nb_filters; i++) | |
837 | swap_samplerates_on_filter(graph->filters[i]); | |
838 | } | |
839 | ||
840 | #define CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER) | |
841 | #define CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT) | |
842 | #define CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT) | |
843 | #define CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT) | |
844 | #define CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT) | |
845 | #define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT) | |
846 | #define CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT) | |
847 | ||
848 | /* allowable substitutions for channel pairs when comparing layouts, | |
849 | * ordered by priority for both values */ | |
850 | static const uint64_t ch_subst[][2] = { | |
851 | { CH_FRONT_PAIR, CH_CENTER_PAIR }, | |
852 | { CH_FRONT_PAIR, CH_WIDE_PAIR }, | |
853 | { CH_FRONT_PAIR, AV_CH_FRONT_CENTER }, | |
854 | { CH_CENTER_PAIR, CH_FRONT_PAIR }, | |
855 | { CH_CENTER_PAIR, CH_WIDE_PAIR }, | |
856 | { CH_CENTER_PAIR, AV_CH_FRONT_CENTER }, | |
857 | { CH_WIDE_PAIR, CH_FRONT_PAIR }, | |
858 | { CH_WIDE_PAIR, CH_CENTER_PAIR }, | |
859 | { CH_WIDE_PAIR, AV_CH_FRONT_CENTER }, | |
860 | { AV_CH_FRONT_CENTER, CH_FRONT_PAIR }, | |
861 | { AV_CH_FRONT_CENTER, CH_CENTER_PAIR }, | |
862 | { AV_CH_FRONT_CENTER, CH_WIDE_PAIR }, | |
863 | { CH_SIDE_PAIR, CH_DIRECT_PAIR }, | |
864 | { CH_SIDE_PAIR, CH_BACK_PAIR }, | |
865 | { CH_SIDE_PAIR, AV_CH_BACK_CENTER }, | |
866 | { CH_BACK_PAIR, CH_DIRECT_PAIR }, | |
867 | { CH_BACK_PAIR, CH_SIDE_PAIR }, | |
868 | { CH_BACK_PAIR, AV_CH_BACK_CENTER }, | |
869 | { AV_CH_BACK_CENTER, CH_BACK_PAIR }, | |
870 | { AV_CH_BACK_CENTER, CH_DIRECT_PAIR }, | |
871 | { AV_CH_BACK_CENTER, CH_SIDE_PAIR }, | |
872 | }; | |
873 | ||
874 | static void swap_channel_layouts_on_filter(AVFilterContext *filter) | |
875 | { | |
876 | AVFilterLink *link = NULL; | |
877 | int i, j, k; | |
878 | ||
879 | for (i = 0; i < filter->nb_inputs; i++) { | |
880 | link = filter->inputs[i]; | |
881 | ||
882 | if (link->type == AVMEDIA_TYPE_AUDIO && | |
883 | link->out_channel_layouts->nb_channel_layouts == 1) | |
884 | break; | |
885 | } | |
886 | if (i == filter->nb_inputs) | |
887 | return; | |
888 | ||
889 | for (i = 0; i < filter->nb_outputs; i++) { | |
890 | AVFilterLink *outlink = filter->outputs[i]; | |
891 | int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX; | |
892 | ||
893 | if (outlink->type != AVMEDIA_TYPE_AUDIO || | |
894 | outlink->in_channel_layouts->nb_channel_layouts < 2) | |
895 | continue; | |
896 | ||
897 | for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) { | |
898 | uint64_t in_chlayout = link->out_channel_layouts->channel_layouts[0]; | |
899 | uint64_t out_chlayout = outlink->in_channel_layouts->channel_layouts[j]; | |
900 | int in_channels = av_get_channel_layout_nb_channels(in_chlayout); | |
901 | int out_channels = av_get_channel_layout_nb_channels(out_chlayout); | |
902 | int count_diff = out_channels - in_channels; | |
903 | int matched_channels, extra_channels; | |
904 | int score = 100000; | |
905 | ||
906 | if (FF_LAYOUT2COUNT(in_chlayout) || FF_LAYOUT2COUNT(out_chlayout)) { | |
907 | /* Compute score in case the input or output layout encodes | |
908 | a channel count; in this case the score is not altered by | |
909 | the computation afterwards, as in_chlayout and | |
910 | out_chlayout have both been set to 0 */ | |
911 | if (FF_LAYOUT2COUNT(in_chlayout)) | |
912 | in_channels = FF_LAYOUT2COUNT(in_chlayout); | |
913 | if (FF_LAYOUT2COUNT(out_chlayout)) | |
914 | out_channels = FF_LAYOUT2COUNT(out_chlayout); | |
915 | score -= 10000 + FFABS(out_channels - in_channels) + | |
916 | (in_channels > out_channels ? 10000 : 0); | |
917 | in_chlayout = out_chlayout = 0; | |
918 | /* Let the remaining computation run, even if the score | |
919 | value is not altered */ | |
920 | } | |
921 | ||
922 | /* channel substitution */ | |
923 | for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) { | |
924 | uint64_t cmp0 = ch_subst[k][0]; | |
925 | uint64_t cmp1 = ch_subst[k][1]; | |
926 | if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) && | |
927 | (out_chlayout & cmp1) && (!( in_chlayout & cmp1))) { | |
928 | in_chlayout &= ~cmp0; | |
929 | out_chlayout &= ~cmp1; | |
930 | /* add score for channel match, minus a deduction for | |
931 | having to do the substitution */ | |
932 | score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2; | |
933 | } | |
934 | } | |
935 | ||
936 | /* no penalty for LFE channel mismatch */ | |
937 | if ( (in_chlayout & AV_CH_LOW_FREQUENCY) && | |
938 | (out_chlayout & AV_CH_LOW_FREQUENCY)) | |
939 | score += 10; | |
940 | in_chlayout &= ~AV_CH_LOW_FREQUENCY; | |
941 | out_chlayout &= ~AV_CH_LOW_FREQUENCY; | |
942 | ||
943 | matched_channels = av_get_channel_layout_nb_channels(in_chlayout & | |
944 | out_chlayout); | |
945 | extra_channels = av_get_channel_layout_nb_channels(out_chlayout & | |
946 | (~in_chlayout)); | |
947 | score += 10 * matched_channels - 5 * extra_channels; | |
948 | ||
949 | if (score > best_score || | |
950 | (count_diff < best_count_diff && score == best_score)) { | |
951 | best_score = score; | |
952 | best_idx = j; | |
953 | best_count_diff = count_diff; | |
954 | } | |
955 | } | |
956 | av_assert0(best_idx >= 0); | |
957 | FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0], | |
958 | outlink->in_channel_layouts->channel_layouts[best_idx]); | |
959 | } | |
960 | ||
961 | } | |
962 | ||
963 | static void swap_channel_layouts(AVFilterGraph *graph) | |
964 | { | |
965 | int i; | |
966 | ||
967 | for (i = 0; i < graph->nb_filters; i++) | |
968 | swap_channel_layouts_on_filter(graph->filters[i]); | |
969 | } | |
970 | ||
971 | static void swap_sample_fmts_on_filter(AVFilterContext *filter) | |
972 | { | |
973 | AVFilterLink *link = NULL; | |
974 | int format, bps; | |
975 | int i, j; | |
976 | ||
977 | for (i = 0; i < filter->nb_inputs; i++) { | |
978 | link = filter->inputs[i]; | |
979 | ||
980 | if (link->type == AVMEDIA_TYPE_AUDIO && | |
981 | link->out_formats->nb_formats == 1) | |
982 | break; | |
983 | } | |
984 | if (i == filter->nb_inputs) | |
985 | return; | |
986 | ||
987 | format = link->out_formats->formats[0]; | |
988 | bps = av_get_bytes_per_sample(format); | |
989 | ||
990 | for (i = 0; i < filter->nb_outputs; i++) { | |
991 | AVFilterLink *outlink = filter->outputs[i]; | |
992 | int best_idx = -1, best_score = INT_MIN; | |
993 | ||
994 | if (outlink->type != AVMEDIA_TYPE_AUDIO || | |
995 | outlink->in_formats->nb_formats < 2) | |
996 | continue; | |
997 | ||
998 | for (j = 0; j < outlink->in_formats->nb_formats; j++) { | |
999 | int out_format = outlink->in_formats->formats[j]; | |
1000 | int out_bps = av_get_bytes_per_sample(out_format); | |
1001 | int score; | |
1002 | ||
1003 | if (av_get_packed_sample_fmt(out_format) == format || | |
1004 | av_get_planar_sample_fmt(out_format) == format) { | |
1005 | best_idx = j; | |
1006 | break; | |
1007 | } | |
1008 | ||
1009 | /* for s32 and float prefer double to prevent loss of information */ | |
1010 | if (bps == 4 && out_bps == 8) { | |
1011 | best_idx = j; | |
1012 | break; | |
1013 | } | |
1014 | ||
1015 | /* prefer closest higher or equal bps */ | |
1016 | score = -abs(out_bps - bps); | |
1017 | if (out_bps >= bps) | |
1018 | score += INT_MAX/2; | |
1019 | ||
1020 | if (score > best_score) { | |
1021 | best_score = score; | |
1022 | best_idx = j; | |
1023 | } | |
1024 | } | |
1025 | av_assert0(best_idx >= 0); | |
1026 | FFSWAP(int, outlink->in_formats->formats[0], | |
1027 | outlink->in_formats->formats[best_idx]); | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | static void swap_sample_fmts(AVFilterGraph *graph) | |
1032 | { | |
1033 | int i; | |
1034 | ||
1035 | for (i = 0; i < graph->nb_filters; i++) | |
1036 | swap_sample_fmts_on_filter(graph->filters[i]); | |
1037 | ||
1038 | } | |
1039 | ||
1040 | static int pick_formats(AVFilterGraph *graph) | |
1041 | { | |
1042 | int i, j, ret; | |
1043 | int change; | |
1044 | ||
1045 | do{ | |
1046 | change = 0; | |
1047 | for (i = 0; i < graph->nb_filters; i++) { | |
1048 | AVFilterContext *filter = graph->filters[i]; | |
1049 | if (filter->nb_inputs){ | |
1050 | for (j = 0; j < filter->nb_inputs; j++){ | |
1051 | if(filter->inputs[j]->in_formats && filter->inputs[j]->in_formats->nb_formats == 1) { | |
1052 | if ((ret = pick_format(filter->inputs[j], NULL)) < 0) | |
1053 | return ret; | |
1054 | change = 1; | |
1055 | } | |
1056 | } | |
1057 | } | |
1058 | if (filter->nb_outputs){ | |
1059 | for (j = 0; j < filter->nb_outputs; j++){ | |
1060 | if(filter->outputs[j]->in_formats && filter->outputs[j]->in_formats->nb_formats == 1) { | |
1061 | if ((ret = pick_format(filter->outputs[j], NULL)) < 0) | |
1062 | return ret; | |
1063 | change = 1; | |
1064 | } | |
1065 | } | |
1066 | } | |
1067 | if (filter->nb_inputs && filter->nb_outputs && filter->inputs[0]->format>=0) { | |
1068 | for (j = 0; j < filter->nb_outputs; j++) { | |
1069 | if(filter->outputs[j]->format<0) { | |
1070 | if ((ret = pick_format(filter->outputs[j], filter->inputs[0])) < 0) | |
1071 | return ret; | |
1072 | change = 1; | |
1073 | } | |
1074 | } | |
1075 | } | |
1076 | } | |
1077 | }while(change); | |
1078 | ||
1079 | for (i = 0; i < graph->nb_filters; i++) { | |
1080 | AVFilterContext *filter = graph->filters[i]; | |
1081 | ||
1082 | for (j = 0; j < filter->nb_inputs; j++) | |
1083 | if ((ret = pick_format(filter->inputs[j], NULL)) < 0) | |
1084 | return ret; | |
1085 | for (j = 0; j < filter->nb_outputs; j++) | |
1086 | if ((ret = pick_format(filter->outputs[j], NULL)) < 0) | |
1087 | return ret; | |
1088 | } | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | /** | |
1093 | * Configure the formats of all the links in the graph. | |
1094 | */ | |
1095 | static int graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx) | |
1096 | { | |
1097 | int ret; | |
1098 | ||
1099 | /* find supported formats from sub-filters, and merge along links */ | |
1100 | while ((ret = query_formats(graph, log_ctx)) == AVERROR(EAGAIN)) | |
1101 | av_log(graph, AV_LOG_DEBUG, "query_formats not finished\n"); | |
1102 | if (ret < 0) | |
1103 | return ret; | |
1104 | ||
1105 | /* Once everything is merged, it's possible that we'll still have | |
1106 | * multiple valid media format choices. We try to minimize the amount | |
1107 | * of format conversion inside filters */ | |
1108 | reduce_formats(graph); | |
1109 | ||
1110 | /* for audio filters, ensure the best format, sample rate and channel layout | |
1111 | * is selected */ | |
1112 | swap_sample_fmts(graph); | |
1113 | swap_samplerates(graph); | |
1114 | swap_channel_layouts(graph); | |
1115 | ||
1116 | if ((ret = pick_formats(graph)) < 0) | |
1117 | return ret; | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | static int ff_avfilter_graph_config_pointers(AVFilterGraph *graph, | |
1123 | AVClass *log_ctx) | |
1124 | { | |
1125 | unsigned i, j; | |
1126 | int sink_links_count = 0, n = 0; | |
1127 | AVFilterContext *f; | |
1128 | AVFilterLink **sinks; | |
1129 | ||
1130 | for (i = 0; i < graph->nb_filters; i++) { | |
1131 | f = graph->filters[i]; | |
1132 | for (j = 0; j < f->nb_inputs; j++) { | |
1133 | f->inputs[j]->graph = graph; | |
1134 | f->inputs[j]->age_index = -1; | |
1135 | } | |
1136 | for (j = 0; j < f->nb_outputs; j++) { | |
1137 | f->outputs[j]->graph = graph; | |
1138 | f->outputs[j]->age_index= -1; | |
1139 | } | |
1140 | if (!f->nb_outputs) { | |
1141 | if (f->nb_inputs > INT_MAX - sink_links_count) | |
1142 | return AVERROR(EINVAL); | |
1143 | sink_links_count += f->nb_inputs; | |
1144 | } | |
1145 | } | |
1146 | sinks = av_calloc(sink_links_count, sizeof(*sinks)); | |
1147 | if (!sinks) | |
1148 | return AVERROR(ENOMEM); | |
1149 | for (i = 0; i < graph->nb_filters; i++) { | |
1150 | f = graph->filters[i]; | |
1151 | if (!f->nb_outputs) { | |
1152 | for (j = 0; j < f->nb_inputs; j++) { | |
1153 | sinks[n] = f->inputs[j]; | |
1154 | f->inputs[j]->age_index = n++; | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | av_assert0(n == sink_links_count); | |
1159 | graph->sink_links = sinks; | |
1160 | graph->sink_links_count = sink_links_count; | |
1161 | return 0; | |
1162 | } | |
1163 | ||
1164 | static int graph_insert_fifos(AVFilterGraph *graph, AVClass *log_ctx) | |
1165 | { | |
1166 | AVFilterContext *f; | |
1167 | int i, j, ret; | |
1168 | int fifo_count = 0; | |
1169 | ||
1170 | for (i = 0; i < graph->nb_filters; i++) { | |
1171 | f = graph->filters[i]; | |
1172 | ||
1173 | for (j = 0; j < f->nb_inputs; j++) { | |
1174 | AVFilterLink *link = f->inputs[j]; | |
1175 | AVFilterContext *fifo_ctx; | |
1176 | AVFilter *fifo; | |
1177 | char name[32]; | |
1178 | ||
1179 | if (!link->dstpad->needs_fifo) | |
1180 | continue; | |
1181 | ||
1182 | fifo = f->inputs[j]->type == AVMEDIA_TYPE_VIDEO ? | |
1183 | avfilter_get_by_name("fifo") : | |
1184 | avfilter_get_by_name("afifo"); | |
1185 | ||
1186 | snprintf(name, sizeof(name), "auto-inserted fifo %d", fifo_count++); | |
1187 | ||
1188 | ret = avfilter_graph_create_filter(&fifo_ctx, fifo, name, NULL, | |
1189 | NULL, graph); | |
1190 | if (ret < 0) | |
1191 | return ret; | |
1192 | ||
1193 | ret = avfilter_insert_filter(link, fifo_ctx, 0, 0); | |
1194 | if (ret < 0) | |
1195 | return ret; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx) | |
1203 | { | |
1204 | int ret; | |
1205 | ||
1206 | if ((ret = graph_check_validity(graphctx, log_ctx))) | |
1207 | return ret; | |
1208 | if ((ret = graph_insert_fifos(graphctx, log_ctx)) < 0) | |
1209 | return ret; | |
1210 | if ((ret = graph_config_formats(graphctx, log_ctx))) | |
1211 | return ret; | |
1212 | if ((ret = graph_config_links(graphctx, log_ctx))) | |
1213 | return ret; | |
1214 | if ((ret = ff_avfilter_graph_config_pointers(graphctx, log_ctx))) | |
1215 | return ret; | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags) | |
1221 | { | |
1222 | int i, r = AVERROR(ENOSYS); | |
1223 | ||
1224 | if (!graph) | |
1225 | return r; | |
1226 | ||
1227 | if ((flags & AVFILTER_CMD_FLAG_ONE) && !(flags & AVFILTER_CMD_FLAG_FAST)) { | |
1228 | r = avfilter_graph_send_command(graph, target, cmd, arg, res, res_len, flags | AVFILTER_CMD_FLAG_FAST); | |
1229 | if (r != AVERROR(ENOSYS)) | |
1230 | return r; | |
1231 | } | |
1232 | ||
1233 | if (res_len && res) | |
1234 | res[0] = 0; | |
1235 | ||
1236 | for (i = 0; i < graph->nb_filters; i++) { | |
1237 | AVFilterContext *filter = graph->filters[i]; | |
1238 | if (!strcmp(target, "all") || (filter->name && !strcmp(target, filter->name)) || !strcmp(target, filter->filter->name)) { | |
1239 | r = avfilter_process_command(filter, cmd, arg, res, res_len, flags); | |
1240 | if (r != AVERROR(ENOSYS)) { | |
1241 | if ((flags & AVFILTER_CMD_FLAG_ONE) || r < 0) | |
1242 | return r; | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | return r; | |
1248 | } | |
1249 | ||
1250 | int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *command, const char *arg, int flags, double ts) | |
1251 | { | |
1252 | int i; | |
1253 | ||
1254 | if(!graph) | |
1255 | return 0; | |
1256 | ||
1257 | for (i = 0; i < graph->nb_filters; i++) { | |
1258 | AVFilterContext *filter = graph->filters[i]; | |
1259 | if(filter && (!strcmp(target, "all") || !strcmp(target, filter->name) || !strcmp(target, filter->filter->name))){ | |
1260 | AVFilterCommand **queue = &filter->command_queue, *next; | |
1261 | while (*queue && (*queue)->time <= ts) | |
1262 | queue = &(*queue)->next; | |
1263 | next = *queue; | |
1264 | *queue = av_mallocz(sizeof(AVFilterCommand)); | |
1265 | (*queue)->command = av_strdup(command); | |
1266 | (*queue)->arg = av_strdup(arg); | |
1267 | (*queue)->time = ts; | |
1268 | (*queue)->flags = flags; | |
1269 | (*queue)->next = next; | |
1270 | if(flags & AVFILTER_CMD_FLAG_ONE) | |
1271 | return 0; | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | return 0; | |
1276 | } | |
1277 | ||
1278 | static void heap_bubble_up(AVFilterGraph *graph, | |
1279 | AVFilterLink *link, int index) | |
1280 | { | |
1281 | AVFilterLink **links = graph->sink_links; | |
1282 | ||
1283 | while (index) { | |
1284 | int parent = (index - 1) >> 1; | |
1285 | if (links[parent]->current_pts >= link->current_pts) | |
1286 | break; | |
1287 | links[index] = links[parent]; | |
1288 | links[index]->age_index = index; | |
1289 | index = parent; | |
1290 | } | |
1291 | links[index] = link; | |
1292 | link->age_index = index; | |
1293 | } | |
1294 | ||
1295 | static void heap_bubble_down(AVFilterGraph *graph, | |
1296 | AVFilterLink *link, int index) | |
1297 | { | |
1298 | AVFilterLink **links = graph->sink_links; | |
1299 | ||
1300 | while (1) { | |
1301 | int child = 2 * index + 1; | |
1302 | if (child >= graph->sink_links_count) | |
1303 | break; | |
1304 | if (child + 1 < graph->sink_links_count && | |
1305 | links[child + 1]->current_pts < links[child]->current_pts) | |
1306 | child++; | |
1307 | if (link->current_pts < links[child]->current_pts) | |
1308 | break; | |
1309 | links[index] = links[child]; | |
1310 | links[index]->age_index = index; | |
1311 | index = child; | |
1312 | } | |
1313 | links[index] = link; | |
1314 | link->age_index = index; | |
1315 | } | |
1316 | ||
1317 | void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link) | |
1318 | { | |
1319 | heap_bubble_up (graph, link, link->age_index); | |
1320 | heap_bubble_down(graph, link, link->age_index); | |
1321 | } | |
1322 | ||
1323 | ||
1324 | int avfilter_graph_request_oldest(AVFilterGraph *graph) | |
1325 | { | |
1326 | while (graph->sink_links_count) { | |
1327 | AVFilterLink *oldest = graph->sink_links[0]; | |
1328 | int r = ff_request_frame(oldest); | |
1329 | if (r != AVERROR_EOF) | |
1330 | return r; | |
1331 | av_log(oldest->dst, AV_LOG_DEBUG, "EOF on sink link %s:%s.\n", | |
1332 | oldest->dst ? oldest->dst->name : "unknown", | |
1333 | oldest->dstpad ? oldest->dstpad->name : "unknown"); | |
1334 | /* EOF: remove the link from the heap */ | |
1335 | if (oldest->age_index < --graph->sink_links_count) | |
1336 | heap_bubble_down(graph, graph->sink_links[graph->sink_links_count], | |
1337 | oldest->age_index); | |
1338 | oldest->age_index = -1; | |
1339 | } | |
1340 | return AVERROR_EOF; | |
1341 | } |