FFmpeg  4.3.8
tee.c
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1 /*
2  * Tee pseudo-muxer
3  * Copyright (c) 2012 Nicolas George
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public License
9  * as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with FFmpeg; if not, write to the Free Software * Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 
23 #include "libavutil/avutil.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/opt.h"
26 #include "internal.h"
27 #include "avformat.h"
28 #include "avio_internal.h"
29 #include "tee_common.h"
30 
31 typedef enum {
35 
36 #define DEFAULT_SLAVE_FAILURE_POLICY ON_SLAVE_FAILURE_ABORT
37 
38 typedef struct {
40  AVBSFContext **bsfs; ///< bitstream filters per stream
41 
43  int use_fifo;
45 
46  /** map from input to output streams indexes,
47  * disabled output streams are set to -1 */
48  int *stream_map;
50 } TeeSlave;
51 
52 typedef struct TeeContext {
53  const AVClass *class;
54  unsigned nb_slaves;
55  unsigned nb_alive;
57  int use_fifo;
59 } TeeContext;
60 
61 static const char *const slave_delim = "|";
62 static const char *const slave_bsfs_spec_sep = "/";
63 static const char *const slave_select_sep = ",";
64 
65 #define OFFSET(x) offsetof(TeeContext, x)
66 static const AVOption options[] = {
67  {"use_fifo", "Use fifo pseudo-muxer to separate actual muxers from encoder",
69  {"fifo_options", "fifo pseudo-muxer options", OFFSET(fifo_options),
71  {NULL}
72 };
73 
74 static const AVClass tee_muxer_class = {
75  .class_name = "Tee muxer",
76  .item_name = av_default_item_name,
77  .option = options,
78  .version = LIBAVUTIL_VERSION_INT,
79 };
80 
81 static inline int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave)
82 {
83  if (!opt) {
85  return 0;
86  } else if (!av_strcasecmp("abort", opt)) {
87  tee_slave->on_fail = ON_SLAVE_FAILURE_ABORT;
88  return 0;
89  } else if (!av_strcasecmp("ignore", opt)) {
90  tee_slave->on_fail = ON_SLAVE_FAILURE_IGNORE;
91  return 0;
92  }
93  /* Set failure behaviour to abort, so invalid option error will not be ignored */
94  tee_slave->on_fail = ON_SLAVE_FAILURE_ABORT;
95  return AVERROR(EINVAL);
96 }
97 
98 static int parse_slave_fifo_options(const char *use_fifo,
99  const char *fifo_options, TeeSlave *tee_slave)
100 {
101  int ret = 0;
102 
103  if (use_fifo) {
104  /*TODO - change this to use proper function for parsing boolean
105  * options when there is one */
106  if (av_match_name(use_fifo, "true,y,yes,enable,enabled,on,1")) {
107  tee_slave->use_fifo = 1;
108  } else if (av_match_name(use_fifo, "false,n,no,disable,disabled,off,0")) {
109  tee_slave->use_fifo = 0;
110  } else {
111  return AVERROR(EINVAL);
112  }
113  }
114 
115  if (fifo_options)
116  ret = av_dict_parse_string(&tee_slave->fifo_options, fifo_options, "=", ":", 0);
117 
118  return ret;
119 }
120 
121 static int close_slave(TeeSlave *tee_slave)
122 {
123  AVFormatContext *avf;
124  unsigned i;
125  int ret = 0;
126 
127  avf = tee_slave->avf;
128  if (!avf)
129  return 0;
130 
131  if (tee_slave->header_written)
132  ret = av_write_trailer(avf);
133 
134  if (tee_slave->bsfs) {
135  for (i = 0; i < avf->nb_streams; ++i)
136  av_bsf_free(&tee_slave->bsfs[i]);
137  }
138  av_freep(&tee_slave->stream_map);
139  av_freep(&tee_slave->bsfs);
140 
141  ff_format_io_close(avf, &avf->pb);
143  tee_slave->avf = NULL;
144  return ret;
145 }
146 
147 static void close_slaves(AVFormatContext *avf)
148 {
149  TeeContext *tee = avf->priv_data;
150  unsigned i;
151 
152  for (i = 0; i < tee->nb_slaves; i++) {
153  close_slave(&tee->slaves[i]);
154  }
155  av_freep(&tee->slaves);
156 }
157 
158 static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
159 {
160  int i, ret;
161  AVDictionary *options = NULL, *bsf_options = NULL;
162  AVDictionaryEntry *entry;
163  char *filename;
164  char *format = NULL, *select = NULL, *on_fail = NULL;
165  char *use_fifo = NULL, *fifo_options_str = NULL;
166  AVFormatContext *avf2 = NULL;
167  AVStream *st, *st2;
168  int stream_count;
169  int fullret;
170  char *subselect = NULL, *next_subselect = NULL, *first_subselect = NULL, *tmp_select = NULL;
171 
172  if ((ret = ff_tee_parse_slave_options(avf, slave, &options, &filename)) < 0)
173  return ret;
174 
175 #define STEAL_OPTION(option, field) do { \
176  if ((entry = av_dict_get(options, option, NULL, 0))) { \
177  field = entry->value; \
178  entry->value = NULL; /* prevent it from being freed */ \
179  av_dict_set(&options, option, NULL, 0); \
180  } \
181  } while (0)
182 
183  STEAL_OPTION("f", format);
184  STEAL_OPTION("select", select);
185  STEAL_OPTION("onfail", on_fail);
186  STEAL_OPTION("use_fifo", use_fifo);
187  STEAL_OPTION("fifo_options", fifo_options_str);
188  entry = NULL;
189  while ((entry = av_dict_get(options, "bsfs", entry, AV_DICT_IGNORE_SUFFIX))) {
190  /* trim out strlen("bsfs") characters from key */
191  av_dict_set(&bsf_options, entry->key + 4, entry->value, 0);
192  av_dict_set(&options, entry->key, NULL, 0);
193  }
194 
195  ret = parse_slave_failure_policy_option(on_fail, tee_slave);
196  if (ret < 0) {
197  av_log(avf, AV_LOG_ERROR,
198  "Invalid onfail option value, valid options are 'abort' and 'ignore'\n");
199  goto end;
200  }
201 
202  ret = parse_slave_fifo_options(use_fifo, fifo_options_str, tee_slave);
203  if (ret < 0) {
204  av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n", av_err2str(ret));
205  goto end;
206  }
207 
208  if (tee_slave->use_fifo) {
209 
210  if (options) {
211  char *format_options_str = NULL;
212  ret = av_dict_get_string(options, &format_options_str, '=', ':');
213  if (ret < 0)
214  goto end;
215 
216  ret = av_dict_set(&tee_slave->fifo_options, "format_opts", format_options_str,
218  if (ret < 0)
219  goto end;
220  }
221 
222  if (format) {
223  ret = av_dict_set(&tee_slave->fifo_options, "fifo_format", format,
225  format = NULL;
226  if (ret < 0)
227  goto end;
228  }
229 
230  av_dict_free(&options);
231  options = tee_slave->fifo_options;
232  }
234  tee_slave->use_fifo ? "fifo" :format, filename);
235  if (ret < 0)
236  goto end;
237  tee_slave->avf = avf2;
238  av_dict_copy(&avf2->metadata, avf->metadata, 0);
239  avf2->opaque = avf->opaque;
240  avf2->io_open = avf->io_open;
241  avf2->io_close = avf->io_close;
243  avf2->flags = avf->flags;
245 
246  tee_slave->stream_map = av_calloc(avf->nb_streams, sizeof(*tee_slave->stream_map));
247  if (!tee_slave->stream_map) {
248  ret = AVERROR(ENOMEM);
249  goto end;
250  }
251 
252  stream_count = 0;
253  for (i = 0; i < avf->nb_streams; i++) {
254  st = avf->streams[i];
255  if (select) {
256  tmp_select = av_strdup(select); // av_strtok is destructive so we regenerate it in each loop
257  if (!tmp_select) {
258  ret = AVERROR(ENOMEM);
259  goto end;
260  }
261  fullret = 0;
262  first_subselect = tmp_select;
263  next_subselect = NULL;
264  while (subselect = av_strtok(first_subselect, slave_select_sep, &next_subselect)) {
265  first_subselect = NULL;
266 
267  ret = avformat_match_stream_specifier(avf, avf->streams[i], subselect);
268  if (ret < 0) {
269  av_log(avf, AV_LOG_ERROR,
270  "Invalid stream specifier '%s' for output '%s'\n",
271  subselect, slave);
272  goto end;
273  }
274  if (ret != 0) {
275  fullret = 1; // match
276  break;
277  }
278  }
279  av_freep(&tmp_select);
280 
281  if (fullret == 0) { /* no match */
282  tee_slave->stream_map[i] = -1;
283  continue;
284  }
285  }
286  tee_slave->stream_map[i] = stream_count++;
287 
288  if (!(st2 = avformat_new_stream(avf2, NULL))) {
289  ret = AVERROR(ENOMEM);
290  goto end;
291  }
292 
293  ret = ff_stream_encode_params_copy(st2, st);
294  if (ret < 0)
295  goto end;
296  }
297 
298  ret = ff_format_output_open(avf2, filename, &options);
299  if (ret < 0) {
300  av_log(avf, AV_LOG_ERROR, "Slave '%s': error opening: %s\n", slave,
301  av_err2str(ret));
302  goto end;
303  }
304 
305  if ((ret = avformat_write_header(avf2, &options)) < 0) {
306  av_log(avf, AV_LOG_ERROR, "Slave '%s': error writing header: %s\n",
307  slave, av_err2str(ret));
308  goto end;
309  }
310  tee_slave->header_written = 1;
311 
312  tee_slave->bsfs = av_calloc(avf2->nb_streams, sizeof(*tee_slave->bsfs));
313  if (!tee_slave->bsfs) {
314  ret = AVERROR(ENOMEM);
315  goto end;
316  }
317 
318  entry = NULL;
319  while (entry = av_dict_get(bsf_options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
320  const char *spec = entry->key;
321  if (*spec) {
322  if (strspn(spec, slave_bsfs_spec_sep) != 1) {
323  av_log(avf, AV_LOG_ERROR,
324  "Specifier separator in '%s' is '%c', but only characters '%s' "
325  "are allowed\n", entry->key, *spec, slave_bsfs_spec_sep);
326  ret = AVERROR(EINVAL);
327  goto end;
328  }
329  spec++; /* consume separator */
330  }
331 
332  for (i = 0; i < avf2->nb_streams; i++) {
333  ret = avformat_match_stream_specifier(avf2, avf2->streams[i], spec);
334  if (ret < 0) {
335  av_log(avf, AV_LOG_ERROR,
336  "Invalid stream specifier '%s' in bsfs option '%s' for slave "
337  "output '%s'\n", spec, entry->key, filename);
338  goto end;
339  }
340 
341  if (ret > 0) {
342  av_log(avf, AV_LOG_DEBUG, "spec:%s bsfs:%s matches stream %d of slave "
343  "output '%s'\n", spec, entry->value, i, filename);
344  if (tee_slave->bsfs[i]) {
345  av_log(avf, AV_LOG_WARNING,
346  "Duplicate bsfs specification associated to stream %d of slave "
347  "output '%s', filters will be ignored\n", i, filename);
348  continue;
349  }
350  ret = av_bsf_list_parse_str(entry->value, &tee_slave->bsfs[i]);
351  if (ret < 0) {
352  av_log(avf, AV_LOG_ERROR,
353  "Error parsing bitstream filter sequence '%s' associated to "
354  "stream %d of slave output '%s'\n", entry->value, i, filename);
355  goto end;
356  }
357  }
358  }
359 
360  av_dict_set(&bsf_options, entry->key, NULL, 0);
361  }
362 
363  for (i = 0; i < avf->nb_streams; i++){
364  int target_stream = tee_slave->stream_map[i];
365  if (target_stream < 0)
366  continue;
367 
368  if (!tee_slave->bsfs[target_stream]) {
369  /* Add pass-through bitstream filter */
370  ret = av_bsf_get_null_filter(&tee_slave->bsfs[target_stream]);
371  if (ret < 0) {
372  av_log(avf, AV_LOG_ERROR,
373  "Failed to create pass-through bitstream filter: %s\n",
374  av_err2str(ret));
375  goto end;
376  }
377  }
378 
379  tee_slave->bsfs[target_stream]->time_base_in = avf->streams[i]->time_base;
380  ret = avcodec_parameters_copy(tee_slave->bsfs[target_stream]->par_in,
381  avf->streams[i]->codecpar);
382  if (ret < 0)
383  goto end;
384 
385  ret = av_bsf_init(tee_slave->bsfs[target_stream]);
386  if (ret < 0) {
387  av_log(avf, AV_LOG_ERROR,
388  "Failed to initialize bitstream filter(s): %s\n",
389  av_err2str(ret));
390  goto end;
391  }
392  }
393 
394  if (options) {
395  entry = NULL;
396  while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX)))
397  av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
399  goto end;
400  }
401 
402 end:
403  av_free(format);
404  av_free(select);
405  av_free(on_fail);
406  av_dict_free(&options);
407  av_dict_free(&bsf_options);
408  av_freep(&tmp_select);
409  return ret;
410 }
411 
412 static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
413 {
414  int i;
415  av_log(log_ctx, log_level, "filename:'%s' format:%s\n",
416  slave->avf->url, slave->avf->oformat->name);
417  for (i = 0; i < slave->avf->nb_streams; i++) {
418  AVStream *st = slave->avf->streams[i];
419  AVBSFContext *bsf = slave->bsfs[i];
420  const char *bsf_name;
421 
422  av_log(log_ctx, log_level, " stream:%d codec:%s type:%s",
425 
426  bsf_name = bsf->filter->priv_class ?
427  bsf->filter->priv_class->item_name(bsf) : bsf->filter->name;
428  av_log(log_ctx, log_level, " bsfs: %s\n", bsf_name);
429  }
430 }
431 
432 static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
433 {
434  TeeContext *tee = avf->priv_data;
435  TeeSlave *tee_slave = &tee->slaves[slave_idx];
436 
437  tee->nb_alive--;
438 
439  close_slave(tee_slave);
440 
441  if (!tee->nb_alive) {
442  av_log(avf, AV_LOG_ERROR, "All tee outputs failed.\n");
443  return err_n;
444  } else if (tee_slave->on_fail == ON_SLAVE_FAILURE_ABORT) {
445  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed, aborting.\n", slave_idx);
446  return err_n;
447  } else {
448  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed: %s, continuing with %u/%u slaves.\n",
449  slave_idx, av_err2str(err_n), tee->nb_alive, tee->nb_slaves);
450  return 0;
451  }
452 }
453 
455 {
456  TeeContext *tee = avf->priv_data;
457  unsigned nb_slaves = 0, i;
458  const char *filename = avf->url;
459  char **slaves = NULL;
460  int ret;
461 
462  while (*filename) {
463  char *slave = av_get_token(&filename, slave_delim);
464  if (!slave) {
465  ret = AVERROR(ENOMEM);
466  goto fail;
467  }
468  ret = av_dynarray_add_nofree(&slaves, &nb_slaves, slave);
469  if (ret < 0) {
470  av_free(slave);
471  goto fail;
472  }
473  if (strspn(filename, slave_delim))
474  filename++;
475  }
476 
477  if (!(tee->slaves = av_mallocz_array(nb_slaves, sizeof(*tee->slaves)))) {
478  ret = AVERROR(ENOMEM);
479  goto fail;
480  }
481  tee->nb_slaves = tee->nb_alive = nb_slaves;
482 
483  for (i = 0; i < nb_slaves; i++) {
484 
485  tee->slaves[i].use_fifo = tee->use_fifo;
486  ret = av_dict_copy(&tee->slaves[i].fifo_options, tee->fifo_options, 0);
487  if (ret < 0)
488  goto fail;
489 
490  if ((ret = open_slave(avf, slaves[i], &tee->slaves[i])) < 0) {
491  ret = tee_process_slave_failure(avf, i, ret);
492  if (ret < 0)
493  goto fail;
494  } else {
495  log_slave(&tee->slaves[i], avf, AV_LOG_VERBOSE);
496  }
497  av_freep(&slaves[i]);
498  }
499 
500  for (i = 0; i < avf->nb_streams; i++) {
501  int j, mapped = 0;
502  for (j = 0; j < tee->nb_slaves; j++)
503  if (tee->slaves[j].avf)
504  mapped += tee->slaves[j].stream_map[i] >= 0;
505  if (!mapped)
506  av_log(avf, AV_LOG_WARNING, "Input stream #%d is not mapped "
507  "to any slave.\n", i);
508  }
509  av_free(slaves);
510  return 0;
511 
512 fail:
513  for (i = 0; i < nb_slaves; i++)
514  av_freep(&slaves[i]);
515  close_slaves(avf);
516  av_free(slaves);
517  return ret;
518 }
519 
521 {
522  TeeContext *tee = avf->priv_data;
523  int ret_all = 0, ret;
524  unsigned i;
525 
526  for (i = 0; i < tee->nb_slaves; i++) {
527  if ((ret = close_slave(&tee->slaves[i])) < 0) {
528  ret = tee_process_slave_failure(avf, i, ret);
529  if (!ret_all && ret < 0)
530  ret_all = ret;
531  }
532  }
533  av_freep(&tee->slaves);
534  return ret_all;
535 }
536 
538 {
539  TeeContext *tee = avf->priv_data;
540  AVFormatContext *avf2;
541  AVBSFContext *bsfs;
542  AVPacket pkt2;
543  int ret_all = 0, ret;
544  unsigned i, s;
545  int s2;
546 
547  for (i = 0; i < tee->nb_slaves; i++) {
548  if (!(avf2 = tee->slaves[i].avf))
549  continue;
550 
551  /* Flush slave if pkt is NULL*/
552  if (!pkt) {
553  ret = av_interleaved_write_frame(avf2, NULL);
554  if (ret < 0) {
555  ret = tee_process_slave_failure(avf, i, ret);
556  if (!ret_all && ret < 0)
557  ret_all = ret;
558  }
559  continue;
560  }
561 
562  s = pkt->stream_index;
563  s2 = tee->slaves[i].stream_map[s];
564  if (s2 < 0)
565  continue;
566 
567  if ((ret = av_packet_ref(&pkt2, pkt)) < 0)
568  if (!ret_all) {
569  ret_all = ret;
570  continue;
571  }
572  bsfs = tee->slaves[i].bsfs[s2];
573  pkt2.stream_index = s2;
574 
575  ret = av_bsf_send_packet(bsfs, &pkt2);
576  if (ret < 0) {
577  av_log(avf, AV_LOG_ERROR, "Error while sending packet to bitstream filter: %s\n",
578  av_err2str(ret));
579  ret = tee_process_slave_failure(avf, i, ret);
580  if (!ret_all && ret < 0)
581  ret_all = ret;
582  }
583 
584  while(1) {
585  ret = av_bsf_receive_packet(bsfs, &pkt2);
586  if (ret == AVERROR(EAGAIN)) {
587  ret = 0;
588  break;
589  } else if (ret < 0) {
590  break;
591  }
592 
593  av_packet_rescale_ts(&pkt2, bsfs->time_base_out,
594  avf2->streams[s2]->time_base);
595  ret = av_interleaved_write_frame(avf2, &pkt2);
596  if (ret < 0)
597  break;
598  };
599 
600  if (ret < 0) {
601  ret = tee_process_slave_failure(avf, i, ret);
602  if (!ret_all && ret < 0)
603  ret_all = ret;
604  }
605  }
606  return ret_all;
607 }
608 
610  .name = "tee",
611  .long_name = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
612  .priv_data_size = sizeof(TeeContext),
616  .priv_class = &tee_muxer_class,
618 };
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:703
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
Definition: avformat.h:1933
#define NULL
Definition: coverity.c:32
static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
Definition: tee.c:537
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions. ...
Definition: bsf.h:117
static const char * format[]
Definition: af_aiir.c:339
int av_bsf_get_null_filter(AVBSFContext **bsf)
Get null/pass-through bitstream filter.
Definition: bsf.c:553
SlaveFailurePolicy
Definition: tee.c:31
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
Definition: mux.c:1236
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1629
AVOption.
Definition: opt.h:246
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static int parse_slave_fifo_options(const char *use_fifo, const char *fifo_options, TeeSlave *tee_slave)
Definition: tee.c:98
TeeSlave * slaves
Definition: tee.c:56
static int tee_write_trailer(AVFormatContext *avf)
Definition: tee.c:520
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: bsf.h:58
The bitstream filter state.
Definition: bsf.h:49
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
int av_dict_get_string(const AVDictionary *m, char **buffer, const char key_val_sep, const char pairs_sep)
Get dictionary entries as a string.
Definition: dict.c:230
static const char *const slave_bsfs_spec_sep
Definition: tee.c:62
Convenience header that includes libavutil&#39;s core.
static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
Definition: tee.c:412
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
static AVPacket pkt
int header_written
Definition: tee.c:49
SlaveFailurePolicy on_fail
Definition: tee.c:42
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:471
static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
Definition: tee.c:432
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1659
static const char *const slave_delim
Definition: tee.c:61
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
Format I/O context.
Definition: avformat.h:1351
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AVOutputFormat ff_tee_muxer
Definition: tee.c:609
static int close_slave(TeeSlave *tee_slave)
Definition: tee.c:121
AVOptions.
const char *(* item_name)(void *ctx)
A pointer to a function which returns the name of a context instance ctx associated with the class...
Definition: log.h:78
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5695
static void close_slaves(AVFormatContext *avf)
Definition: tee.c:147
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
Check if the stream st contained in s is matched by the stream specifier spec.
Definition: utils.c:5329
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4526
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
const char * name
Definition: bsf.h:99
unsigned nb_alive
Definition: tee.c:55
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
Utility function to open IO stream of output format.
Definition: utils.c:5685
int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
Copy encoding parameters from source to destination stream.
Definition: utils.c:4337
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
Add an element to a dynamic array.
Definition: mem.c:296
static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
Definition: tee.c:158
#define av_log(a,...)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:276
static const char *const slave_select_sep
Definition: tee.c:63
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:614
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
int use_fifo
Definition: tee.c:57
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another...
Definition: avpacket.c:712
#define s2
Definition: regdef.h:39
#define DEFAULT_SLAVE_FAILURE_POLICY
Definition: tee.c:36
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
char * url
input or output URL.
Definition: avformat.h:1447
AVBSFContext ** bsfs
bitstream filters per stream
Definition: tee.c:40
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
unsigned nb_slaves
Definition: tee.c:54
int * stream_map
map from input to output streams indexes, disabled output streams are set to -1
Definition: tee.c:48
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:89
int avformat_alloc_output_context2(AVFormatContext **ctx, ff_const59 AVOutputFormat *oformat, const char *format_name, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:135
int av_match_name(const char *name, const char *names)
Match instances of a name in a comma-separated list of names.
Definition: avstring.c:350
AVDictionary * fifo_options
Definition: tee.c:58
AVDictionary * fifo_options
Definition: tee.c:44
#define fail()
Definition: checkasm.h:123
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
Definition: avstring.c:149
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:144
#define OFFSET(x)
Definition: tee.c:65
void * opaque
User data.
Definition: avformat.h:1857
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf_lst)
Parse string describing list of bitstream filters and create single AVBSFContext describing the whole...
Definition: bsf.c:519
Definition: tee.c:38
int ff_tee_parse_slave_options(void *log, char *slave, AVDictionary **options, char **filename)
Definition: tee_common.c:32
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:505
static const AVClass tee_muxer_class
Definition: tee.c:74
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: bsf.h:95
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
const char * name
Definition: avformat.h:500
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define s(width, name)
Definition: cbs_vp9.c:257
int use_fifo
Definition: tee.c:43
static const AVOption options[]
Definition: tee.c:66
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1370
Stream structure.
Definition: avformat.h:876
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:180
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:197
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
Definition: tee.c:52
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:223
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1939
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
Describe the class of an AVClass context structure.
Definition: log.h:67
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4455
const char * av_get_media_type_string(enum AVMediaType media_type)
Return a string describing the media_type enum, NULL if media_type is unknown.
Definition: utils.c:76
#define flags(name, subs,...)
Definition: cbs_av1.c:576
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
Main libavformat public API header.
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:1215
char * key
Definition: dict.h:86
#define av_free(p)
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:61
char * value
Definition: dict.h:87
void * priv_data
Format private data.
Definition: avformat.h:1379
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1251
#define av_freep(p)
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
void av_bsf_free(AVBSFContext **pctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:40
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
int stream_index
Definition: packet.h:357
static int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave)
Definition: tee.c:81
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:905
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2118
This structure stores compressed data.
Definition: packet.h:332
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:77
AVFormatContext * avf
Definition: tee.c:39
static int tee_write_header(AVFormatContext *avf)
Definition: tee.c:454
#define STEAL_OPTION(option, field)
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190