GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/avfiltergraph.c Lines: 564 724 77.9 %
Date: 2020-09-25 14:59:26 Branches: 482 710 67.9 %

Line Branch Exec Source
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/imgutils.h"
32
#include "libavutil/internal.h"
33
#include "libavutil/opt.h"
34
#include "libavutil/pixdesc.h"
35
36
#define FF_INTERNAL_FIELDS 1
37
#include "framequeue.h"
38
39
#include "avfilter.h"
40
#include "buffersink.h"
41
#include "formats.h"
42
#include "internal.h"
43
#include "thread.h"
44
45
#define OFFSET(x) offsetof(AVFilterGraph, x)
46
#define F AV_OPT_FLAG_FILTERING_PARAM
47
#define V AV_OPT_FLAG_VIDEO_PARAM
48
#define A AV_OPT_FLAG_AUDIO_PARAM
49
static const AVOption filtergraph_options[] = {
50
    { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
51
        { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, F|V|A, "thread_type" },
52
        { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = F|V|A, .unit = "thread_type" },
53
    { "threads",     "Maximum number of threads", OFFSET(nb_threads),
54
        AV_OPT_TYPE_INT,   { .i64 = 0 }, 0, INT_MAX, F|V|A },
55
    {"scale_sws_opts"       , "default scale filter options"        , OFFSET(scale_sws_opts)        ,
56
        AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|V },
57
    {"aresample_swr_opts"   , "default aresample filter options"    , OFFSET(aresample_swr_opts)    ,
58
        AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|A },
59
    { NULL },
60
};
61
62
static const AVClass filtergraph_class = {
63
    .class_name = "AVFilterGraph",
64
    .item_name  = av_default_item_name,
65
    .version    = LIBAVUTIL_VERSION_INT,
66
    .option     = filtergraph_options,
67
    .category   = AV_CLASS_CATEGORY_FILTER,
68
};
69
70
#if !HAVE_THREADS
71
void ff_graph_thread_free(AVFilterGraph *graph)
72
{
73
}
74
75
int ff_graph_thread_init(AVFilterGraph *graph)
76
{
77
    graph->thread_type = 0;
78
    graph->nb_threads  = 1;
79
    return 0;
80
}
81
#endif
82
83
6001
AVFilterGraph *avfilter_graph_alloc(void)
84
{
85
6001
    AVFilterGraph *ret = av_mallocz(sizeof(*ret));
86
6001
    if (!ret)
87
        return NULL;
88
89
6001
    ret->internal = av_mallocz(sizeof(*ret->internal));
90
6001
    if (!ret->internal) {
91
        av_freep(&ret);
92
        return NULL;
93
    }
94
95
6001
    ret->av_class = &filtergraph_class;
96
6001
    av_opt_set_defaults(ret);
97
6001
    ff_framequeue_global_init(&ret->internal->frame_queues);
98
99
6001
    return ret;
100
}
101
102
29705
void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter)
103
{
104
    int i, j;
105
29705
    for (i = 0; i < graph->nb_filters; i++) {
106
29705
        if (graph->filters[i] == filter) {
107
29705
            FFSWAP(AVFilterContext*, graph->filters[i],
108
                   graph->filters[graph->nb_filters - 1]);
109
29705
            graph->nb_filters--;
110
29705
            filter->graph = NULL;
111
53589
            for (j = 0; j<filter->nb_outputs; j++)
112
23884
                if (filter->outputs[j])
113
11478
                    filter->outputs[j]->graph = NULL;
114
115
29705
            return;
116
        }
117
    }
118
}
119
120
11791
void avfilter_graph_free(AVFilterGraph **graph)
121
{
122
11791
    if (!*graph)
123
5790
        return;
124
125
35640
    while ((*graph)->nb_filters)
126
29639
        avfilter_free((*graph)->filters[0]);
127
128
6001
    ff_graph_thread_free(*graph);
129
130
6001
    av_freep(&(*graph)->sink_links);
131
132
6001
    av_freep(&(*graph)->scale_sws_opts);
133
6001
    av_freep(&(*graph)->aresample_swr_opts);
134
#if FF_API_LAVR_OPTS
135
6001
    av_freep(&(*graph)->resample_lavr_opts);
136
#endif
137
6001
    av_freep(&(*graph)->filters);
138
6001
    av_freep(&(*graph)->internal);
139
6001
    av_freep(graph);
140
}
141
142
17819
int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt,
143
                                 const char *name, const char *args, void *opaque,
144
                                 AVFilterGraph *graph_ctx)
145
{
146
    int ret;
147
148
17819
    *filt_ctx = avfilter_graph_alloc_filter(graph_ctx, filt, name);
149
17819
    if (!*filt_ctx)
150
        return AVERROR(ENOMEM);
151
152
17819
    ret = avfilter_init_str(*filt_ctx, args);
153
17819
    if (ret < 0)
154
        goto fail;
155
156
17819
    return 0;
157
158
fail:
159
    if (*filt_ctx)
160
        avfilter_free(*filt_ctx);
161
    *filt_ctx = NULL;
162
    return ret;
163
}
164
165
4206
void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags)
166
{
167
4206
    graph->disable_auto_convert = flags;
168
4206
}
169
170
29705
AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph,
171
                                             const AVFilter *filter,
172
                                             const char *name)
173
{
174
    AVFilterContext **filters, *s;
175
176

29705
    if (graph->thread_type && !graph->internal->thread_execute) {
177
6001
        if (graph->execute) {
178
            graph->internal->thread_execute = graph->execute;
179
        } else {
180
6001
            int ret = ff_graph_thread_init(graph);
181
6001
            if (ret < 0) {
182
                av_log(graph, AV_LOG_ERROR, "Error initializing threading: %s.\n", av_err2str(ret));
183
                return NULL;
184
            }
185
        }
186
    }
187
188
29705
    s = ff_filter_alloc(filter, name);
189
29705
    if (!s)
190
        return NULL;
191
192
29705
    filters = av_realloc(graph->filters, sizeof(*filters) * (graph->nb_filters + 1));
193
29705
    if (!filters) {
194
        avfilter_free(s);
195
        return NULL;
196
    }
197
198
29705
    graph->filters = filters;
199
29705
    graph->filters[graph->nb_filters++] = s;
200
201
29705
    s->graph = graph;
202
203
29705
    return s;
204
}
205
206
/**
207
 * Check for the validity of graph.
208
 *
209
 * A graph is considered valid if all its input and output pads are
210
 * connected.
211
 *
212
 * @return >= 0 in case of success, a negative value otherwise
213
 */
214
5856
static int graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx)
215
{
216
    AVFilterContext *filt;
217
    int i, j;
218
219
34618
    for (i = 0; i < graph->nb_filters; i++) {
220
        const AVFilterPad *pad;
221
28762
        filt = graph->filters[i];
222
223
51684
        for (j = 0; j < filt->nb_inputs; j++) {
224

22922
            if (!filt->inputs[j] || !filt->inputs[j]->src) {
225
                pad = &filt->input_pads[j];
226
                av_log(log_ctx, AV_LOG_ERROR,
227
                       "Input pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any source\n",
228
                       pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name);
229
                return AVERROR(EINVAL);
230
            }
231
        }
232
233
51684
        for (j = 0; j < filt->nb_outputs; j++) {
234

22922
            if (!filt->outputs[j] || !filt->outputs[j]->dst) {
235
                pad = &filt->output_pads[j];
236
                av_log(log_ctx, AV_LOG_ERROR,
237
                       "Output pad \"%s\" with type %s of the filter instance \"%s\" of %s not connected to any destination\n",
238
                       pad->name, av_get_media_type_string(pad->type), filt->name, filt->filter->name);
239
                return AVERROR(EINVAL);
240
            }
241
        }
242
    }
243
244
5856
    return 0;
245
}
246
247
/**
248
 * Configure all the links of graphctx.
249
 *
250
 * @return >= 0 in case of success, a negative value otherwise
251
 */
252
5852
static int graph_config_links(AVFilterGraph *graph, AVClass *log_ctx)
253
{
254
    AVFilterContext *filt;
255
    int i, ret;
256
257
35279
    for (i = 0; i < graph->nb_filters; i++) {
258
29427
        filt = graph->filters[i];
259
260
29427
        if (!filt->nb_outputs) {
261
5858
            if ((ret = avfilter_config_links(filt)))
262
                return ret;
263
        }
264
    }
265
266
5852
    return 0;
267
}
268
269
5852
static int graph_check_links(AVFilterGraph *graph, AVClass *log_ctx)
270
{
271
    AVFilterContext *f;
272
    AVFilterLink *l;
273
    unsigned i, j;
274
    int ret;
275
276
35279
    for (i = 0; i < graph->nb_filters; i++) {
277
29427
        f = graph->filters[i];
278
53014
        for (j = 0; j < f->nb_outputs; j++) {
279
23587
            l = f->outputs[j];
280
23587
            if (l->type == AVMEDIA_TYPE_VIDEO) {
281
18696
                ret = av_image_check_size2(l->w, l->h, INT64_MAX, l->format, 0, f);
282
18696
                if (ret < 0)
283
                    return ret;
284
            }
285
        }
286
    }
287
5852
    return 0;
288
}
289
290
AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, const char *name)
291
{
292
    int i;
293
294
    for (i = 0; i < graph->nb_filters; i++)
295
        if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name))
296
            return graph->filters[i];
297
298
    return NULL;
299
}
300
301
38911
static void sanitize_channel_layouts(void *log, AVFilterChannelLayouts *l)
302
{
303
38911
    if (!l)
304
31191
        return;
305
7720
    if (l->nb_channel_layouts) {
306

1325
        if (l->all_layouts || l->all_counts)
307
            av_log(log, AV_LOG_WARNING, "All layouts set on non-empty list\n");
308
1325
        l->all_layouts = l->all_counts = 0;
309
    } else {
310

6395
        if (l->all_counts && !l->all_layouts)
311
            av_log(log, AV_LOG_WARNING, "All counts without all layouts\n");
312
6395
        l->all_layouts = 1;
313
    }
314
}
315
316
38911
static int filter_link_check_formats(void *log, AVFilterLink *link, AVFilterFormatsConfig *cfg)
317
{
318
    int ret;
319
320
38911
    switch (link->type) {
321
322
31189
    case AVMEDIA_TYPE_VIDEO:
323
31189
        if ((ret = ff_formats_check_pixel_formats(log, cfg->formats)) < 0)
324
            return ret;
325
31189
        break;
326
327
7722
    case AVMEDIA_TYPE_AUDIO:
328

15444
        if ((ret = ff_formats_check_sample_formats(log, cfg->formats)) < 0 ||
329
15444
            (ret = ff_formats_check_sample_rates(log, cfg->samplerates)) < 0 ||
330
7722
            (ret = ff_formats_check_channel_layouts(log, cfg->channel_layouts)) < 0)
331
            return ret;
332
7722
        break;
333
334
    default:
335
        av_assert0(!"reached");
336
    }
337
38911
    return 0;
338
}
339
340
/**
341
 * Check the validity of the formats / etc. lists set by query_formats().
342
 *
343
 * In particular, check they do not contain any redundant element.
344
 */
345
25304
static int filter_check_formats(AVFilterContext *ctx)
346
{
347
    unsigned i;
348
    int ret;
349
350
44768
    for (i = 0; i < ctx->nb_inputs; i++) {
351
19464
        ret = filter_link_check_formats(ctx, ctx->inputs[i], &ctx->inputs[i]->outcfg);
352
19464
        if (ret < 0)
353
            return ret;
354
    }
355
44751
    for (i = 0; i < ctx->nb_outputs; i++) {
356
19447
        ret = filter_link_check_formats(ctx, ctx->outputs[i], &ctx->outputs[i]->incfg);
357
19447
        if (ret < 0)
358
            return ret;
359
    }
360
25304
    return 0;
361
}
362
363
25318
static int filter_query_formats(AVFilterContext *ctx)
364
{
365
    int ret, i;
366
    AVFilterFormats *formats;
367
    AVFilterChannelLayouts *chlayouts;
368
    AVFilterFormats *samplerates;
369

31219
    enum AVMediaType type = ctx->inputs  && ctx->inputs [0] ? ctx->inputs [0]->type :
370

5901
                            ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
371
                            AVMEDIA_TYPE_VIDEO;
372
373
25318
    if ((ret = ctx->filter->query_formats(ctx)) < 0) {
374
14
        if (ret != AVERROR(EAGAIN))
375
            av_log(ctx, AV_LOG_ERROR, "Query format failed for '%s': %s\n",
376
                   ctx->name, av_err2str(ret));
377
14
        return ret;
378
    }
379
25304
    ret = filter_check_formats(ctx);
380
25304
    if (ret < 0)
381
        return ret;
382
383
44768
    for (i = 0; i < ctx->nb_inputs; i++)
384
19464
        sanitize_channel_layouts(ctx, ctx->inputs[i]->outcfg.channel_layouts);
385
44751
    for (i = 0; i < ctx->nb_outputs; i++)
386
19447
        sanitize_channel_layouts(ctx, ctx->outputs[i]->incfg.channel_layouts);
387
388
25304
    formats = ff_all_formats(type);
389
25304
    if ((ret = ff_set_common_formats(ctx, formats)) < 0)
390
        return ret;
391
25304
    if (type == AVMEDIA_TYPE_AUDIO) {
392
4993
        samplerates = ff_all_samplerates();
393
4993
        if ((ret = ff_set_common_samplerates(ctx, samplerates)) < 0)
394
            return ret;
395
4993
        chlayouts = ff_all_channel_layouts();
396
4993
        if ((ret = ff_set_common_channel_layouts(ctx, chlayouts)) < 0)
397
            return ret;
398
    }
399
25304
    return 0;
400
}
401
402
28820
static int formats_declared(AVFilterContext *f)
403
{
404
    int i;
405
406
28855
    for (i = 0; i < f->nb_inputs; i++) {
407
22908
        if (!f->inputs[i]->outcfg.formats)
408
22873
            return 0;
409
35
        if (f->inputs[i]->type == AVMEDIA_TYPE_AUDIO &&
410
2
            !(f->inputs[i]->outcfg.samplerates &&
411
2
              f->inputs[i]->outcfg.channel_layouts))
412
            return 0;
413
    }
414
5981
    for (i = 0; i < f->nb_outputs; i++) {
415
5937
        if (!f->outputs[i]->incfg.formats)
416
5903
            return 0;
417
34
        if (f->outputs[i]->type == AVMEDIA_TYPE_AUDIO &&
418
3
            !(f->outputs[i]->incfg.samplerates &&
419
3
              f->outputs[i]->incfg.channel_layouts))
420
            return 0;
421
    }
422
44
    return 1;
423
}
424
425
/**
426
 * Perform one round of query_formats() and merging formats lists on the
427
 * filter graph.
428
 * @return  >=0 if all links formats lists could be queried and merged;
429
 *          AVERROR(EAGAIN) some progress was made in the queries or merging
430
 *          and a later call may succeed;
431
 *          AVERROR(EIO) (may be changed) plus a log message if no progress
432
 *          was made and the negotiation is stuck;
433
 *          a negative error code if some other error happened
434
 */
435
5870
static int query_formats(AVFilterGraph *graph, AVClass *log_ctx)
436
{
437
    int i, j, ret;
438
5870
    int scaler_count = 0, resampler_count = 0;
439
5870
    int count_queried = 0;        /* successful calls to query_formats() */
440
5870
    int count_merged = 0;         /* successful merge of formats lists */
441
5870
    int count_already_merged = 0; /* lists already merged */
442
5870
    int count_delayed = 0;        /* lists that need to be merged later */
443
444
34690
    for (i = 0; i < graph->nb_filters; i++) {
445
28820
        AVFilterContext *f = graph->filters[i];
446
28820
        if (formats_declared(f))
447
44
            continue;
448
28776
        if (f->filter->query_formats)
449
24625
            ret = filter_query_formats(f);
450
        else
451
4151
            ret = ff_default_query_formats(f);
452

28776
        if (ret < 0 && ret != AVERROR(EAGAIN))
453
            return ret;
454
        /* note: EAGAIN could indicate a partial success, not counted yet */
455
28776
        count_queried += ret >= 0;
456
    }
457
458
    /* go through and merge as many format lists as possible */
459
35367
    for (i = 0; i < graph->nb_filters; i++) {
460
29501
        AVFilterContext *filter = graph->filters[i];
461
462
53144
        for (j = 0; j < filter->nb_inputs; j++) {
463
23647
            AVFilterLink *link = filter->inputs[j];
464
23647
            int convert_needed = 0;
465
466
23647
            if (!link)
467
                continue;
468
469
23647
            if (link->incfg.formats != link->outcfg.formats
470

22931
                && link->incfg.formats && link->outcfg.formats)
471
22904
                if (!ff_can_merge_formats(link->incfg.formats, link->outcfg.formats,
472
                                          link->type))
473
685
                    convert_needed = 1;
474
23647
            if (link->type == AVMEDIA_TYPE_AUDIO) {
475
4895
                if (link->incfg.samplerates != link->outcfg.samplerates
476

4499
                    && link->incfg.samplerates && link->outcfg.samplerates)
477
4496
                    if (!ff_can_merge_samplerates(link->incfg.samplerates,
478
4496
                                                  link->outcfg.samplerates))
479
17
                        convert_needed = 1;
480
            }
481
482
#define CHECKED_MERGE(field, ...) ((ret = ff_merge_ ## field(__VA_ARGS__)) <= 0)
483
#define MERGE_DISPATCH(field, ...)                                           \
484
            if (!(link->incfg.field && link->outcfg.field)) {                \
485
                count_delayed++;                                             \
486
            } else if (link->incfg.field == link->outcfg.field) {            \
487
                count_already_merged++;                                      \
488
            } else if (!convert_needed) {                                    \
489
                count_merged++;                                              \
490
                if (CHECKED_MERGE(field, __VA_ARGS__)) {                     \
491
                    if (ret < 0)                                             \
492
                        return ret;                                          \
493
                    convert_needed = 1;                                      \
494
                }                                                            \
495
            }
496
497
23647
            if (link->type == AVMEDIA_TYPE_AUDIO) {
498



4895
                MERGE_DISPATCH(channel_layouts, link->incfg.channel_layouts,
499
                                                link->outcfg.channel_layouts)
500



4895
                MERGE_DISPATCH(samplerates, link->incfg.samplerates,
501
                                            link->outcfg.samplerates)
502
            }
503



23647
            MERGE_DISPATCH(formats, link->incfg.formats,
504
                           link->outcfg.formats, link->type)
505
#undef MERGE_DISPATCH
506
507
23647
            if (convert_needed) {
508
                AVFilterContext *convert;
509
                const AVFilter *filter;
510
                AVFilterLink *inlink, *outlink;
511
                char inst_name[30];
512
513
697
                if (graph->disable_auto_convert) {
514
4
                    av_log(log_ctx, AV_LOG_ERROR,
515
                           "The filters '%s' and '%s' do not have a common format "
516
                           "and automatic conversion is disabled.\n",
517
4
                           link->src->name, link->dst->name);
518
4
                    return AVERROR(EINVAL);
519
                }
520
521
                /* couldn't merge format lists. auto-insert conversion filter */
522
693
                switch (link->type) {
523
298
                case AVMEDIA_TYPE_VIDEO:
524
298
                    if (!(filter = avfilter_get_by_name("scale"))) {
525
                        av_log(log_ctx, AV_LOG_ERROR, "'scale' filter "
526
                               "not present, cannot convert pixel formats.\n");
527
                        return AVERROR(EINVAL);
528
                    }
529
530
298
                    snprintf(inst_name, sizeof(inst_name), "auto_scaler_%d",
531
                             scaler_count++);
532
533
298
                    if ((ret = avfilter_graph_create_filter(&convert, filter,
534
298
                                                            inst_name, graph->scale_sws_opts, NULL,
535
                                                            graph)) < 0)
536
                        return ret;
537
298
                    break;
538
395
                case AVMEDIA_TYPE_AUDIO:
539
395
                    if (!(filter = avfilter_get_by_name("aresample"))) {
540
                        av_log(log_ctx, AV_LOG_ERROR, "'aresample' filter "
541
                               "not present, cannot convert audio formats.\n");
542
                        return AVERROR(EINVAL);
543
                    }
544
545
395
                    snprintf(inst_name, sizeof(inst_name), "auto_resampler_%d",
546
                             resampler_count++);
547
395
                    if ((ret = avfilter_graph_create_filter(&convert, filter,
548
395
                                                            inst_name, graph->aresample_swr_opts,
549
                                                            NULL, graph)) < 0)
550
                        return ret;
551
395
                    break;
552
                default:
553
                    return AVERROR(EINVAL);
554
                }
555
556
693
                if ((ret = avfilter_insert_filter(link, convert, 0, 0)) < 0)
557
                    return ret;
558
559
693
                if ((ret = filter_query_formats(convert)) < 0)
560
                    return ret;
561
562
693
                inlink  = convert->inputs[0];
563
693
                outlink = convert->outputs[0];
564
693
                av_assert0( inlink->incfg.formats->refcount > 0);
565
693
                av_assert0( inlink->outcfg.formats->refcount > 0);
566
693
                av_assert0(outlink->incfg.formats->refcount > 0);
567
693
                av_assert0(outlink->outcfg.formats->refcount > 0);
568
693
                if (outlink->type == AVMEDIA_TYPE_AUDIO) {
569
395
                    av_assert0( inlink-> incfg.samplerates->refcount > 0);
570
395
                    av_assert0( inlink->outcfg.samplerates->refcount > 0);
571
395
                    av_assert0(outlink-> incfg.samplerates->refcount > 0);
572
395
                    av_assert0(outlink->outcfg.samplerates->refcount > 0);
573
395
                    av_assert0( inlink-> incfg.channel_layouts->refcount > 0);
574
395
                    av_assert0( inlink->outcfg.channel_layouts->refcount > 0);
575
395
                    av_assert0(outlink-> incfg.channel_layouts->refcount > 0);
576
395
                    av_assert0(outlink->outcfg.channel_layouts->refcount > 0);
577
                }
578
693
                if (CHECKED_MERGE(formats, inlink->incfg.formats,
579
693
                                  inlink->outcfg.formats, inlink->type)         ||
580
693
                    CHECKED_MERGE(formats, outlink->incfg.formats,
581
693
                                  outlink->outcfg.formats, outlink->type)       ||
582

1088
                    inlink->type == AVMEDIA_TYPE_AUDIO &&
583
395
                    (CHECKED_MERGE(samplerates, inlink->incfg.samplerates,
584
395
                                                inlink->outcfg.samplerates)  ||
585
395
                     CHECKED_MERGE(channel_layouts, inlink->incfg.channel_layouts,
586
693
                                   inlink->outcfg.channel_layouts))             ||
587

1088
                    outlink->type == AVMEDIA_TYPE_AUDIO &&
588
395
                    (CHECKED_MERGE(samplerates, outlink->incfg.samplerates,
589
395
                                                outlink->outcfg.samplerates) ||
590
395
                     CHECKED_MERGE(channel_layouts, outlink->incfg.channel_layouts,
591
                                                    outlink->outcfg.channel_layouts))) {
592
                    if (ret < 0)
593
                        return ret;
594
                    av_log(log_ctx, AV_LOG_ERROR,
595
                           "Impossible to convert between the formats supported by the filter "
596
                           "'%s' and the filter '%s'\n", link->src->name, link->dst->name);
597
                    return AVERROR(ENOSYS);
598
                }
599
            }
600
        }
601
    }
602
603
5866
    av_log(graph, AV_LOG_DEBUG, "query_formats: "
604
           "%d queried, %d merged, %d already done, %d delayed\n",
605
           count_queried, count_merged, count_already_merged, count_delayed);
606
5866
    if (count_delayed) {
607
        AVBPrint bp;
608
609
        /* if count_queried > 0, one filter at least did set its formats,
610
           that will give additional information to its neighbour;
611
           if count_merged > 0, one pair of formats lists at least was merged,
612
           that will give additional information to all connected filters;
613
           in both cases, progress was made and a new round must be done */
614

14
        if (count_queried || count_merged)
615
14
            return AVERROR(EAGAIN);
616
        av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
617
        for (i = 0; i < graph->nb_filters; i++)
618
            if (!formats_declared(graph->filters[i]))
619
                av_bprintf(&bp, "%s%s", bp.len ? ", " : "",
620
                          graph->filters[i]->name);
621
        av_log(graph, AV_LOG_ERROR,
622
               "The following filters could not choose their formats: %s\n"
623
               "Consider inserting the (a)format filter near their input or "
624
               "output.\n", bp.str);
625
        return AVERROR(EIO);
626
    }
627
5852
    return 0;
628
}
629
630
238
static int get_fmt_score(enum AVSampleFormat dst_fmt, enum AVSampleFormat src_fmt)
631
{
632
238
    int score = 0;
633
634
238
    if (av_sample_fmt_is_planar(dst_fmt) != av_sample_fmt_is_planar(src_fmt))
635
221
        score ++;
636
637
238
    if (av_get_bytes_per_sample(dst_fmt) < av_get_bytes_per_sample(src_fmt)) {
638
88
        score += 100 * (av_get_bytes_per_sample(src_fmt) - av_get_bytes_per_sample(dst_fmt));
639
    }else
640
150
        score += 10  * (av_get_bytes_per_sample(dst_fmt) - av_get_bytes_per_sample(src_fmt));
641
642

271
    if (av_get_packed_sample_fmt(dst_fmt) == AV_SAMPLE_FMT_S32 &&
643
33
        av_get_packed_sample_fmt(src_fmt) == AV_SAMPLE_FMT_FLT)
644
        score += 20;
645
646

258
    if (av_get_packed_sample_fmt(dst_fmt) == AV_SAMPLE_FMT_FLT &&
647
20
        av_get_packed_sample_fmt(src_fmt) == AV_SAMPLE_FMT_S32)
648
        score += 2;
649
650
238
    return score;
651
}
652
653
119
static enum AVSampleFormat find_best_sample_fmt_of_2(enum AVSampleFormat dst_fmt1, enum AVSampleFormat dst_fmt2,
654
                                                     enum AVSampleFormat src_fmt)
655
{
656
    int score1, score2;
657
658
119
    score1 = get_fmt_score(dst_fmt1, src_fmt);
659
119
    score2 = get_fmt_score(dst_fmt2, src_fmt);
660
661
119
    return score1 < score2 ? dst_fmt1 : dst_fmt2;
662
}
663
664
70724
static int pick_format(AVFilterLink *link, AVFilterLink *ref)
665
{
666

70724
    if (!link || !link->incfg.formats)
667
47137
        return 0;
668
669
23587
    if (link->type == AVMEDIA_TYPE_VIDEO) {
670

18696
        if(ref && ref->type == AVMEDIA_TYPE_VIDEO){
671
            //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
672
82
            int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2 == 0;
673
82
            enum AVPixelFormat best= AV_PIX_FMT_NONE;
674
            int i;
675
576
            for (i = 0; i < link->incfg.formats->nb_formats; i++) {
676
494
                enum AVPixelFormat p = link->incfg.formats->formats[i];
677
494
                best= av_find_best_pix_fmt_of_2(best, p, ref->format, has_alpha, NULL);
678
            }
679
82
            av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s alpha:%d\n",
680
82
                   av_get_pix_fmt_name(best), link->incfg.formats->nb_formats,
681
82
                   av_get_pix_fmt_name(ref->format), has_alpha);
682
82
            link->incfg.formats->formats[0] = best;
683
        }
684
4891
    } else if (link->type == AVMEDIA_TYPE_AUDIO) {
685

4891
        if(ref && ref->type == AVMEDIA_TYPE_AUDIO){
686
29
            enum AVSampleFormat best= AV_SAMPLE_FMT_NONE;
687
            int i;
688
148
            for (i = 0; i < link->incfg.formats->nb_formats; i++) {
689
119
                enum AVSampleFormat p = link->incfg.formats->formats[i];
690
119
                best = find_best_sample_fmt_of_2(best, p, ref->format);
691
            }
692
29
            av_log(link->src,AV_LOG_DEBUG, "picking %s out of %d ref:%s\n",
693
29
                   av_get_sample_fmt_name(best), link->incfg.formats->nb_formats,
694
29
                   av_get_sample_fmt_name(ref->format));
695
29
            link->incfg.formats->formats[0] = best;
696
        }
697
    }
698
699
23587
    link->incfg.formats->nb_formats = 1;
700
23587
    link->format = link->incfg.formats->formats[0];
701
702
23587
    if (link->type == AVMEDIA_TYPE_AUDIO) {
703
4891
        if (!link->incfg.samplerates->nb_formats) {
704
            av_log(link->src, AV_LOG_ERROR, "Cannot select sample rate for"
705
                   " the link between filters %s and %s.\n", link->src->name,
706
                   link->dst->name);
707
            return AVERROR(EINVAL);
708
        }
709
4891
        link->incfg.samplerates->nb_formats = 1;
710
4891
        link->sample_rate = link->incfg.samplerates->formats[0];
711
712
4891
        if (link->incfg.channel_layouts->all_layouts) {
713
            av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for"
714
                   " the link between filters %s and %s.\n", link->src->name,
715
                   link->dst->name);
716
            if (!link->incfg.channel_layouts->all_counts)
717
                av_log(link->src, AV_LOG_ERROR, "Unknown channel layouts not "
718
                       "supported, try specifying a channel layout using "
719
                       "'aformat=channel_layouts=something'.\n");
720
            return AVERROR(EINVAL);
721
        }
722
4891
        link->incfg.channel_layouts->nb_channel_layouts = 1;
723
4891
        link->channel_layout = link->incfg.channel_layouts->channel_layouts[0];
724

4891
        if ((link->channels = FF_LAYOUT2COUNT(link->channel_layout)))
725
29
            link->channel_layout = 0;
726
        else
727
4862
            link->channels = av_get_channel_layout_nb_channels(link->channel_layout);
728
    }
729
730
23587
    ff_formats_unref(&link->incfg.formats);
731
23587
    ff_formats_unref(&link->outcfg.formats);
732
23587
    ff_formats_unref(&link->incfg.samplerates);
733
23587
    ff_formats_unref(&link->outcfg.samplerates);
734
23587
    ff_channel_layouts_unref(&link->incfg.channel_layouts);
735
23587
    ff_channel_layouts_unref(&link->outcfg.channel_layouts);
736
737
23587
    return 0;
738
}
739
740
#define REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) \
741
do {                                                                   \
742
    for (i = 0; i < filter->nb_inputs; i++) {                          \
743
        AVFilterLink *link = filter->inputs[i];                        \
744
        fmt_type fmt;                                                  \
745
                                                                       \
746
        if (!link->outcfg.list || link->outcfg.list->nb != 1)          \
747
            continue;                                                  \
748
        fmt = link->outcfg.list->var[0];                               \
749
                                                                       \
750
        for (j = 0; j < filter->nb_outputs; j++) {                     \
751
            AVFilterLink *out_link = filter->outputs[j];               \
752
            list_type *fmts;                                           \
753
                                                                       \
754
            if (link->type != out_link->type ||                        \
755
                out_link->incfg.list->nb == 1)                         \
756
                continue;                                              \
757
            fmts = out_link->incfg.list;                               \
758
                                                                       \
759
            if (!out_link->incfg.list->nb) {                           \
760
                if ((ret = add_format(&out_link->incfg.list, fmt)) < 0)\
761
                    return ret;                                        \
762
                ret = 1;                                               \
763
                break;                                                 \
764
            }                                                          \
765
                                                                       \
766
            for (k = 0; k < out_link->incfg.list->nb; k++)             \
767
                if (fmts->var[k] == fmt) {                             \
768
                    fmts->var[0]  = fmt;                               \
769
                    fmts->nb = 1;                                      \
770
                    ret = 1;                                           \
771
                    break;                                             \
772
                }                                                      \
773
        }                                                              \
774
    }                                                                  \
775
} while (0)
776
777
32360
static int reduce_formats_on_filter(AVFilterContext *filter)
778
{
779
32360
    int i, j, k, ret = 0;
780
781





80494
    REDUCE_FORMATS(int,      AVFilterFormats,        formats,         formats,
782
                   nb_formats, ff_add_format);
783





62636
    REDUCE_FORMATS(int,      AVFilterFormats,        samplerates,     formats,
784
                   nb_formats, ff_add_format);
785
786
    /* reduce channel layouts */
787
58255
    for (i = 0; i < filter->nb_inputs; i++) {
788
25895
        AVFilterLink *inlink = filter->inputs[i];
789
        uint64_t fmt;
790
791
25895
        if (!inlink->outcfg.channel_layouts ||
792
6882
            inlink->outcfg.channel_layouts->nb_channel_layouts != 1)
793
19773
            continue;
794
6122
        fmt = inlink->outcfg.channel_layouts->channel_layouts[0];
795
796
9804
        for (j = 0; j < filter->nb_outputs; j++) {
797
4835
            AVFilterLink *outlink = filter->outputs[j];
798
            AVFilterChannelLayouts *fmts;
799
800
4835
            fmts = outlink->incfg.channel_layouts;
801

4835
            if (inlink->type != outlink->type || fmts->nb_channel_layouts == 1)
802
3653
                continue;
803
804
1182
            if (fmts->all_layouts &&
805

1153
                (!FF_LAYOUT2COUNT(fmt) || fmts->all_counts)) {
806
                /* Turn the infinite list into a singleton */
807
1153
                fmts->all_layouts = fmts->all_counts  = 0;
808
1153
                if (ff_add_channel_layout(&outlink->incfg.channel_layouts, fmt) < 0)
809
                    ret = 1;
810
1153
                break;
811
            }
812
813
79
            for (k = 0; k < outlink->incfg.channel_layouts->nb_channel_layouts; k++) {
814
77
                if (fmts->channel_layouts[k] == fmt) {
815
27
                    fmts->channel_layouts[0]  = fmt;
816
27
                    fmts->nb_channel_layouts = 1;
817
27
                    ret = 1;
818
27
                    break;
819
                }
820
            }
821
        }
822
    }
823
824
32360
    return ret;
825
}
826
827
6477
static int reduce_formats(AVFilterGraph *graph)
828
{
829
    int i, reduced, ret;
830
831
    do {
832
6477
        reduced = 0;
833
834
38837
        for (i = 0; i < graph->nb_filters; i++) {
835
32360
            if ((ret = reduce_formats_on_filter(graph->filters[i])) < 0)
836
                return ret;
837
32360
            reduced |= ret;
838
        }
839
6477
    } while (reduced);
840
841
5852
    return 0;
842
}
843
844
29427
static void swap_samplerates_on_filter(AVFilterContext *filter)
845
{
846
29427
    AVFilterLink *link = NULL;
847
    int sample_rate;
848
    int i, j;
849
850
48119
    for (i = 0; i < filter->nb_inputs; i++) {
851
23572
        link = filter->inputs[i];
852
853
23572
        if (link->type == AVMEDIA_TYPE_AUDIO &&
854
4880
            link->outcfg.samplerates->nb_formats== 1)
855
4880
            break;
856
    }
857
29427
    if (i == filter->nb_inputs)
858
24547
        return;
859
860
4880
    sample_rate = link->outcfg.samplerates->formats[0];
861
862
8628
    for (i = 0; i < filter->nb_outputs; i++) {
863
3748
        AVFilterLink *outlink = filter->outputs[i];
864
3748
        int best_idx, best_diff = INT_MAX;
865
866
3748
        if (outlink->type != AVMEDIA_TYPE_AUDIO ||
867
3746
            outlink->incfg.samplerates->nb_formats < 2)
868
3748
            continue;
869
870
        for (j = 0; j < outlink->incfg.samplerates->nb_formats; j++) {
871
            int diff = abs(sample_rate - outlink->incfg.samplerates->formats[j]);
872
873
            av_assert0(diff < INT_MAX); // This would lead to the use of uninitialized best_diff but is only possible with invalid sample rates
874
875
            if (diff < best_diff) {
876
                best_diff = diff;
877
                best_idx  = j;
878
            }
879
        }
880
        FFSWAP(int, outlink->incfg.samplerates->formats[0],
881
               outlink->incfg.samplerates->formats[best_idx]);
882
    }
883
}
884
885
5852
static void swap_samplerates(AVFilterGraph *graph)
886
{
887
    int i;
888
889
35279
    for (i = 0; i < graph->nb_filters; i++)
890
29427
        swap_samplerates_on_filter(graph->filters[i]);
891
5852
}
892
893
#define CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER)
894
#define CH_FRONT_PAIR  (AV_CH_FRONT_LEFT           | AV_CH_FRONT_RIGHT)
895
#define CH_STEREO_PAIR (AV_CH_STEREO_LEFT          | AV_CH_STEREO_RIGHT)
896
#define CH_WIDE_PAIR   (AV_CH_WIDE_LEFT            | AV_CH_WIDE_RIGHT)
897
#define CH_SIDE_PAIR   (AV_CH_SIDE_LEFT            | AV_CH_SIDE_RIGHT)
898
#define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT)
899
#define CH_BACK_PAIR   (AV_CH_BACK_LEFT            | AV_CH_BACK_RIGHT)
900
901
/* allowable substitutions for channel pairs when comparing layouts,
902
 * ordered by priority for both values */
903
static const uint64_t ch_subst[][2] = {
904
    { CH_FRONT_PAIR,      CH_CENTER_PAIR     },
905
    { CH_FRONT_PAIR,      CH_WIDE_PAIR       },
906
    { CH_FRONT_PAIR,      AV_CH_FRONT_CENTER },
907
    { CH_CENTER_PAIR,     CH_FRONT_PAIR      },
908
    { CH_CENTER_PAIR,     CH_WIDE_PAIR       },
909
    { CH_CENTER_PAIR,     AV_CH_FRONT_CENTER },
910
    { CH_WIDE_PAIR,       CH_FRONT_PAIR      },
911
    { CH_WIDE_PAIR,       CH_CENTER_PAIR     },
912
    { CH_WIDE_PAIR,       AV_CH_FRONT_CENTER },
913
    { AV_CH_FRONT_CENTER, CH_FRONT_PAIR      },
914
    { AV_CH_FRONT_CENTER, CH_CENTER_PAIR     },
915
    { AV_CH_FRONT_CENTER, CH_WIDE_PAIR       },
916
    { CH_SIDE_PAIR,       CH_DIRECT_PAIR     },
917
    { CH_SIDE_PAIR,       CH_BACK_PAIR       },
918
    { CH_SIDE_PAIR,       AV_CH_BACK_CENTER  },
919
    { CH_BACK_PAIR,       CH_DIRECT_PAIR     },
920
    { CH_BACK_PAIR,       CH_SIDE_PAIR       },
921
    { CH_BACK_PAIR,       AV_CH_BACK_CENTER  },
922
    { AV_CH_BACK_CENTER,  CH_BACK_PAIR       },
923
    { AV_CH_BACK_CENTER,  CH_DIRECT_PAIR     },
924
    { AV_CH_BACK_CENTER,  CH_SIDE_PAIR       },
925
};
926
927
29427
static void swap_channel_layouts_on_filter(AVFilterContext *filter)
928
{
929
29427
    AVFilterLink *link = NULL;
930
    int i, j, k;
931
932
48121
    for (i = 0; i < filter->nb_inputs; i++) {
933
23572
        link = filter->inputs[i];
934
935
23572
        if (link->type == AVMEDIA_TYPE_AUDIO &&
936
4880
            link->outcfg.channel_layouts->nb_channel_layouts == 1)
937
4878
            break;
938
    }
939
29427
    if (i == filter->nb_inputs)
940
24549
        return;
941
942
8625
    for (i = 0; i < filter->nb_outputs; i++) {
943
3747
        AVFilterLink *outlink = filter->outputs[i];
944
3747
        int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX;
945
946
3747
        if (outlink->type != AVMEDIA_TYPE_AUDIO ||
947
3745
            outlink->incfg.channel_layouts->nb_channel_layouts < 2)
948
3746
            continue;
949
950
19
        for (j = 0; j < outlink->incfg.channel_layouts->nb_channel_layouts; j++) {
951
18
            uint64_t  in_chlayout = link->outcfg.channel_layouts->channel_layouts[0];
952
18
            uint64_t out_chlayout = outlink->incfg.channel_layouts->channel_layouts[j];
953
18
            int  in_channels      = av_get_channel_layout_nb_channels(in_chlayout);
954
18
            int out_channels      = av_get_channel_layout_nb_channels(out_chlayout);
955
18
            int count_diff        = out_channels - in_channels;
956
            int matched_channels, extra_channels;
957
18
            int score = 100000;
958
959


18
            if (FF_LAYOUT2COUNT(in_chlayout) || FF_LAYOUT2COUNT(out_chlayout)) {
960
                /* Compute score in case the input or output layout encodes
961
                   a channel count; in this case the score is not altered by
962
                   the computation afterwards, as in_chlayout and
963
                   out_chlayout have both been set to 0 */
964

18
                if (FF_LAYOUT2COUNT(in_chlayout))
965
18
                    in_channels = FF_LAYOUT2COUNT(in_chlayout);
966

18
                if (FF_LAYOUT2COUNT(out_chlayout))
967
                    out_channels = FF_LAYOUT2COUNT(out_chlayout);
968
36
                score -= 10000 + FFABS(out_channels - in_channels) +
969
18
                         (in_channels > out_channels ? 10000 : 0);
970
18
                in_chlayout = out_chlayout = 0;
971
                /* Let the remaining computation run, even if the score
972
                   value is not altered */
973
            }
974
975
            /* channel substitution */
976
396
            for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) {
977
378
                uint64_t cmp0 = ch_subst[k][0];
978
378
                uint64_t cmp1 = ch_subst[k][1];
979

378
                if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) &&
980
                    (out_chlayout & cmp1) && (!( in_chlayout & cmp1))) {
981
                    in_chlayout  &= ~cmp0;
982
                    out_chlayout &= ~cmp1;
983
                    /* add score for channel match, minus a deduction for
984
                       having to do the substitution */
985
                    score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2;
986
                }
987
            }
988
989
            /* no penalty for LFE channel mismatch */
990
18
            if ( (in_chlayout & AV_CH_LOW_FREQUENCY) &&
991
                (out_chlayout & AV_CH_LOW_FREQUENCY))
992
                score += 10;
993
18
            in_chlayout  &= ~AV_CH_LOW_FREQUENCY;
994
18
            out_chlayout &= ~AV_CH_LOW_FREQUENCY;
995
996
18
            matched_channels = av_get_channel_layout_nb_channels(in_chlayout &
997
                                                                 out_chlayout);
998
18
            extra_channels   = av_get_channel_layout_nb_channels(out_chlayout &
999
18
                                                                 (~in_chlayout));
1000
18
            score += 10 * matched_channels - 5 * extra_channels;
1001
1002

18
            if (score > best_score ||
1003
                (count_diff < best_count_diff && score == best_score)) {
1004
1
                best_score = score;
1005
1
                best_idx   = j;
1006
1
                best_count_diff = count_diff;
1007
            }
1008
        }
1009
1
        av_assert0(best_idx >= 0);
1010
1
        FFSWAP(uint64_t, outlink->incfg.channel_layouts->channel_layouts[0],
1011
               outlink->incfg.channel_layouts->channel_layouts[best_idx]);
1012
    }
1013
1014
}
1015
1016
5852
static void swap_channel_layouts(AVFilterGraph *graph)
1017
{
1018
    int i;
1019
1020
35279
    for (i = 0; i < graph->nb_filters; i++)
1021
29427
        swap_channel_layouts_on_filter(graph->filters[i]);
1022
5852
}
1023
1024
29427
static void swap_sample_fmts_on_filter(AVFilterContext *filter)
1025
{
1026
29427
    AVFilterLink *link = NULL;
1027
    int format, bps;
1028
    int i, j;
1029
1030
48168
    for (i = 0; i < filter->nb_inputs; i++) {
1031
23573
        link = filter->inputs[i];
1032
1033
23573
        if (link->type == AVMEDIA_TYPE_AUDIO &&
1034
4881
            link->outcfg.formats->nb_formats == 1)
1035
4832
            break;
1036
    }
1037
29427
    if (i == filter->nb_inputs)
1038
24595
        return;
1039
1040
4832
    format = link->outcfg.formats->formats[0];
1041
4832
    bps    = av_get_bytes_per_sample(format);
1042
1043
8554
    for (i = 0; i < filter->nb_outputs; i++) {
1044
3722
        AVFilterLink *outlink = filter->outputs[i];
1045
3722
        int best_idx = -1, best_score = INT_MIN;
1046
1047
3722
        if (outlink->type != AVMEDIA_TYPE_AUDIO ||
1048
3720
            outlink->incfg.formats->nb_formats < 2)
1049
3692
            continue;
1050
1051
89
        for (j = 0; j < outlink->incfg.formats->nb_formats; j++) {
1052
89
            int out_format = outlink->incfg.formats->formats[j];
1053
89
            int out_bps    = av_get_bytes_per_sample(out_format);
1054
            int score;
1055
1056

160
            if (av_get_packed_sample_fmt(out_format) == format ||
1057
71
                av_get_planar_sample_fmt(out_format) == format) {
1058
30
                best_idx   = j;
1059
30
                break;
1060
            }
1061
1062
            /* for s32 and float prefer double to prevent loss of information */
1063

59
            if (bps == 4 && out_bps == 8) {
1064
                best_idx = j;
1065
                break;
1066
            }
1067
1068
            /* prefer closest higher or equal bps */
1069
59
            score = -abs(out_bps - bps);
1070
59
            if (out_bps >= bps)
1071
                score += INT_MAX/2;
1072
1073
59
            if (score > best_score) {
1074
47
                best_score = score;
1075
47
                best_idx   = j;
1076
            }
1077
        }
1078
30
        av_assert0(best_idx >= 0);
1079
30
        FFSWAP(int, outlink->incfg.formats->formats[0],
1080
               outlink->incfg.formats->formats[best_idx]);
1081
    }
1082
}
1083
1084
5852
static void swap_sample_fmts(AVFilterGraph *graph)
1085
{
1086
    int i;
1087
1088
35279
    for (i = 0; i < graph->nb_filters; i++)
1089
29427
        swap_sample_fmts_on_filter(graph->filters[i]);
1090
1091
5852
}
1092
1093
11737
static int pick_formats(AVFilterGraph *graph)
1094
{
1095
    int i, j, ret;
1096
    int change;
1097
1098
    do{
1099
11737
        change = 0;
1100
70798
        for (i = 0; i < graph->nb_filters; i++) {
1101
59061
            AVFilterContext *filter = graph->filters[i];
1102
59061
            if (filter->nb_inputs){
1103
94585
                for (j = 0; j < filter->nb_inputs; j++){
1104

47351
                    if (filter->inputs[j]->incfg.formats && filter->inputs[j]->incfg.formats->nb_formats == 1) {
1105
11230
                        if ((ret = pick_format(filter->inputs[j], NULL)) < 0)
1106
                            return ret;
1107
11230
                        change = 1;
1108
                    }
1109
                }
1110
            }
1111
59061
            if (filter->nb_outputs){
1112
94663
                for (j = 0; j < filter->nb_outputs; j++){
1113

47351
                    if (filter->outputs[j]->incfg.formats && filter->outputs[j]->incfg.formats->nb_formats == 1) {
1114
12209
                        if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
1115
                            return ret;
1116
12209
                        change = 1;
1117
                    }
1118
                }
1119
            }
1120

59061
            if (filter->nb_inputs && filter->nb_outputs && filter->inputs[0]->format>=0) {
1121
70843
                for (j = 0; j < filter->nb_outputs; j++) {
1122
35440
                    if (filter->outputs[j]->format<0) {
1123
111
                        if ((ret = pick_format(filter->outputs[j], filter->inputs[0])) < 0)
1124
                            return ret;
1125
111
                        change = 1;
1126
                    }
1127
                }
1128
            }
1129
        }
1130
11737
    }while(change);
1131
1132
35279
    for (i = 0; i < graph->nb_filters; i++) {
1133
29427
        AVFilterContext *filter = graph->filters[i];
1134
1135
53014
        for (j = 0; j < filter->nb_inputs; j++)
1136
23587
            if ((ret = pick_format(filter->inputs[j], NULL)) < 0)
1137
                return ret;
1138
53014
        for (j = 0; j < filter->nb_outputs; j++)
1139
23587
            if ((ret = pick_format(filter->outputs[j], NULL)) < 0)
1140
                return ret;
1141
    }
1142
5852
    return 0;
1143
}
1144
1145
/**
1146
 * Configure the formats of all the links in the graph.
1147
 */
1148
5856
static int graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx)
1149
{
1150
    int ret;
1151
1152
    /* find supported formats from sub-filters, and merge along links */
1153
5870
    while ((ret = query_formats(graph, log_ctx)) == AVERROR(EAGAIN))
1154
14
        av_log(graph, AV_LOG_DEBUG, "query_formats not finished\n");
1155
5856
    if (ret < 0)
1156
4
        return ret;
1157
1158
    /* Once everything is merged, it's possible that we'll still have
1159
     * multiple valid media format choices. We try to minimize the amount
1160
     * of format conversion inside filters */
1161
5852
    if ((ret = reduce_formats(graph)) < 0)
1162
        return ret;
1163
1164
    /* for audio filters, ensure the best format, sample rate and channel layout
1165
     * is selected */
1166
5852
    swap_sample_fmts(graph);
1167
5852
    swap_samplerates(graph);
1168
5852
    swap_channel_layouts(graph);
1169
1170
5852
    if ((ret = pick_formats(graph)) < 0)
1171
        return ret;
1172
1173
5852
    return 0;
1174
}
1175
1176
5852
static int graph_config_pointers(AVFilterGraph *graph,
1177
                                             AVClass *log_ctx)
1178
{
1179
    unsigned i, j;
1180
5852
    int sink_links_count = 0, n = 0;
1181
    AVFilterContext *f;
1182
    AVFilterLink **sinks;
1183
1184
35279
    for (i = 0; i < graph->nb_filters; i++) {
1185
29427
        f = graph->filters[i];
1186
53014
        for (j = 0; j < f->nb_inputs; j++) {
1187
23587
            f->inputs[j]->graph     = graph;
1188
23587
            f->inputs[j]->age_index = -1;
1189
        }
1190
53014
        for (j = 0; j < f->nb_outputs; j++) {
1191
23587
            f->outputs[j]->graph    = graph;
1192
23587
            f->outputs[j]->age_index= -1;
1193
        }
1194
29427
        if (!f->nb_outputs) {
1195
5858
            if (f->nb_inputs > INT_MAX - sink_links_count)
1196
                return AVERROR(EINVAL);
1197
5858
            sink_links_count += f->nb_inputs;
1198
        }
1199
    }
1200
5852
    sinks = av_calloc(sink_links_count, sizeof(*sinks));
1201
5852
    if (!sinks)
1202
        return AVERROR(ENOMEM);
1203
35279
    for (i = 0; i < graph->nb_filters; i++) {
1204
29427
        f = graph->filters[i];
1205
29427
        if (!f->nb_outputs) {
1206
11716
            for (j = 0; j < f->nb_inputs; j++) {
1207
5858
                sinks[n] = f->inputs[j];
1208
5858
                f->inputs[j]->age_index = n++;
1209
            }
1210
        }
1211
    }
1212
5852
    av_assert0(n == sink_links_count);
1213
5852
    graph->sink_links       = sinks;
1214
5852
    graph->sink_links_count = sink_links_count;
1215
5852
    return 0;
1216
}
1217
1218
5856
int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
1219
{
1220
    int ret;
1221
1222
5856
    if ((ret = graph_check_validity(graphctx, log_ctx)))
1223
        return ret;
1224
5856
    if ((ret = graph_config_formats(graphctx, log_ctx)))
1225
4
        return ret;
1226
5852
    if ((ret = graph_config_links(graphctx, log_ctx)))
1227
        return ret;
1228
5852
    if ((ret = graph_check_links(graphctx, log_ctx)))
1229
        return ret;
1230
5852
    if ((ret = graph_config_pointers(graphctx, log_ctx)))
1231
        return ret;
1232
1233
5852
    return 0;
1234
}
1235
1236
int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags)
1237
{
1238
    int i, r = AVERROR(ENOSYS);
1239
1240
    if (!graph)
1241
        return r;
1242
1243
    if ((flags & AVFILTER_CMD_FLAG_ONE) && !(flags & AVFILTER_CMD_FLAG_FAST)) {
1244
        r = avfilter_graph_send_command(graph, target, cmd, arg, res, res_len, flags | AVFILTER_CMD_FLAG_FAST);
1245
        if (r != AVERROR(ENOSYS))
1246
            return r;
1247
    }
1248
1249
    if (res_len && res)
1250
        res[0] = 0;
1251
1252
    for (i = 0; i < graph->nb_filters; i++) {
1253
        AVFilterContext *filter = graph->filters[i];
1254
        if (!strcmp(target, "all") || (filter->name && !strcmp(target, filter->name)) || !strcmp(target, filter->filter->name)) {
1255
            r = avfilter_process_command(filter, cmd, arg, res, res_len, flags);
1256
            if (r != AVERROR(ENOSYS)) {
1257
                if ((flags & AVFILTER_CMD_FLAG_ONE) || r < 0)
1258
                    return r;
1259
            }
1260
        }
1261
    }
1262
1263
    return r;
1264
}
1265
1266
int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *command, const char *arg, int flags, double ts)
1267
{
1268
    int i;
1269
1270
    if(!graph)
1271
        return 0;
1272
1273
    for (i = 0; i < graph->nb_filters; i++) {
1274
        AVFilterContext *filter = graph->filters[i];
1275
        if(filter && (!strcmp(target, "all") || !strcmp(target, filter->name) || !strcmp(target, filter->filter->name))){
1276
            AVFilterCommand **queue = &filter->command_queue, *next;
1277
            while (*queue && (*queue)->time <= ts)
1278
                queue = &(*queue)->next;
1279
            next = *queue;
1280
            *queue = av_mallocz(sizeof(AVFilterCommand));
1281
            if (!*queue)
1282
                return AVERROR(ENOMEM);
1283
1284
            (*queue)->command = av_strdup(command);
1285
            (*queue)->arg     = av_strdup(arg);
1286
            (*queue)->time    = ts;
1287
            (*queue)->flags   = flags;
1288
            (*queue)->next    = next;
1289
            if(flags & AVFILTER_CMD_FLAG_ONE)
1290
                return 0;
1291
        }
1292
    }
1293
1294
    return 0;
1295
}
1296
1297
429679
static void heap_bubble_up(AVFilterGraph *graph,
1298
                           AVFilterLink *link, int index)
1299
{
1300
429679
    AVFilterLink **links = graph->sink_links;
1301
1302
429679
    av_assert0(index >= 0);
1303
1304
429689
    while (index) {
1305
10
        int parent = (index - 1) >> 1;
1306
10
        if (links[parent]->current_pts_us >= link->current_pts_us)
1307
            break;
1308
10
        links[index] = links[parent];
1309
10
        links[index]->age_index = index;
1310
10
        index = parent;
1311
    }
1312
429679
    links[index] = link;
1313
429679
    link->age_index = index;
1314
429679
}
1315
1316
429681
static void heap_bubble_down(AVFilterGraph *graph,
1317
                             AVFilterLink *link, int index)
1318
{
1319
429681
    AVFilterLink **links = graph->sink_links;
1320
1321
429681
    av_assert0(index >= 0);
1322
1323
642
    while (1) {
1324
430323
        int child = 2 * index + 1;
1325
430323
        if (child >= graph->sink_links_count)
1326
429375
            break;
1327
948
        if (child + 1 < graph->sink_links_count &&
1328
17
            links[child + 1]->current_pts_us < links[child]->current_pts_us)
1329
5
            child++;
1330
948
        if (link->current_pts_us < links[child]->current_pts_us)
1331
306
            break;
1332
642
        links[index] = links[child];
1333
642
        links[index]->age_index = index;
1334
642
        index = child;
1335
    }
1336
429681
    links[index] = link;
1337
429681
    link->age_index = index;
1338
429681
}
1339
1340
429679
void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link)
1341
{
1342
429679
    heap_bubble_up  (graph, link, link->age_index);
1343
429679
    heap_bubble_down(graph, link, link->age_index);
1344
429679
}
1345
1346
382187
int avfilter_graph_request_oldest(AVFilterGraph *graph)
1347
{
1348
382187
    AVFilterLink *oldest = graph->sink_links[0];
1349
    int64_t frame_count;
1350
    int r;
1351
1352
385614
    while (graph->sink_links_count) {
1353
382190
        oldest = graph->sink_links[0];
1354
382190
        if (oldest->dst->filter->activate) {
1355
            /* For now, buffersink is the only filter implementing activate. */
1356
382185
            r = av_buffersink_get_frame_flags(oldest->dst, NULL,
1357
                                              AV_BUFFERSINK_FLAG_PEEK);
1358
382185
            if (r != AVERROR_EOF)
1359
378758
                return r;
1360
        } else {
1361
5
            r = ff_request_frame(oldest);
1362
        }
1363
3432
        if (r != AVERROR_EOF)
1364
5
            break;
1365
3427
        av_log(oldest->dst, AV_LOG_DEBUG, "EOF on sink link %s:%s.\n",
1366
3427
               oldest->dst ? oldest->dst->name : "unknown",
1367
3427
               oldest->dstpad ? oldest->dstpad->name : "unknown");
1368
        /* EOF: remove the link from the heap */
1369
3427
        if (oldest->age_index < --graph->sink_links_count)
1370
2
            heap_bubble_down(graph, graph->sink_links[graph->sink_links_count],
1371
                             oldest->age_index);
1372
3427
        oldest->age_index = -1;
1373
    }
1374
3429
    if (!graph->sink_links_count)
1375
3424
        return AVERROR_EOF;
1376
    av_assert1(!oldest->dst->filter->activate);
1377
    av_assert1(oldest->age_index >= 0);
1378
5
    frame_count = oldest->frame_count_out;
1379
34
    while (frame_count == oldest->frame_count_out) {
1380
29
        r = ff_filter_graph_run_once(graph);
1381
29
        if (r == AVERROR(EAGAIN) &&
1382
            !oldest->frame_wanted_out && !oldest->frame_blocked_in &&
1383
            !oldest->status_in)
1384
            ff_request_frame(oldest);
1385
29
        else if (r < 0)
1386
            return r;
1387
    }
1388
5
    return 0;
1389
}
1390
1391
4179913
int ff_filter_graph_run_once(AVFilterGraph *graph)
1392
{
1393
    AVFilterContext *filter;
1394
    unsigned i;
1395
1396
4179913
    av_assert0(graph->nb_filters);
1397
4179913
    filter = graph->filters[0];
1398
19616255
    for (i = 1; i < graph->nb_filters; i++)
1399
15436342
        if (graph->filters[i]->ready > filter->ready)
1400
2591788
            filter = graph->filters[i];
1401
4179913
    if (!filter->ready)
1402
414913
        return AVERROR(EAGAIN);
1403
3765000
    return ff_filter_activate(filter);
1404
}