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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;
60 } TeeContext;
61 
62 static const char *const slave_delim = "|";
63 static const char *const slave_bsfs_spec_sep = "/";
64 static const char *const slave_select_sep = ",";
65 
66 #define OFFSET(x) offsetof(TeeContext, x)
67 static const AVOption options[] = {
68  {"use_fifo", "Use fifo pseudo-muxer to separate actual muxers from encoder",
69  OFFSET(use_fifo), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
70  {"fifo_options", "fifo pseudo-muxer options", OFFSET(fifo_options_str),
72  {NULL}
73 };
74 
75 static const AVClass tee_muxer_class = {
76  .class_name = "Tee muxer",
77  .item_name = av_default_item_name,
78  .option = options,
79  .version = LIBAVUTIL_VERSION_INT,
80 };
81 
82 static inline int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave)
83 {
84  if (!opt) {
86  return 0;
87  } else if (!av_strcasecmp("abort", opt)) {
88  tee_slave->on_fail = ON_SLAVE_FAILURE_ABORT;
89  return 0;
90  } else if (!av_strcasecmp("ignore", opt)) {
91  tee_slave->on_fail = ON_SLAVE_FAILURE_IGNORE;
92  return 0;
93  }
94  /* Set failure behaviour to abort, so invalid option error will not be ignored */
95  tee_slave->on_fail = ON_SLAVE_FAILURE_ABORT;
96  return AVERROR(EINVAL);
97 }
98 
99 static int parse_slave_fifo_options(const char *use_fifo,
100  const char *fifo_options, TeeSlave *tee_slave)
101 {
102  int ret = 0;
103 
104  if (use_fifo) {
105  /*TODO - change this to use proper function for parsing boolean
106  * options when there is one */
107  if (av_match_name(use_fifo, "true,y,yes,enable,enabled,on,1")) {
108  tee_slave->use_fifo = 1;
109  } else if (av_match_name(use_fifo, "false,n,no,disable,disabled,off,0")) {
110  tee_slave->use_fifo = 0;
111  } else {
112  return AVERROR(EINVAL);
113  }
114  }
115 
116  if (fifo_options)
117  ret = av_dict_parse_string(&tee_slave->fifo_options, fifo_options, "=", ":", 0);
118 
119  return ret;
120 }
121 
122 static int close_slave(TeeSlave *tee_slave)
123 {
124  AVFormatContext *avf;
125  unsigned i;
126  int ret = 0;
127 
128  avf = tee_slave->avf;
129  if (!avf)
130  return 0;
131 
132  if (tee_slave->header_written)
133  ret = av_write_trailer(avf);
134 
135  if (tee_slave->bsfs) {
136  for (i = 0; i < avf->nb_streams; ++i)
137  av_bsf_free(&tee_slave->bsfs[i]);
138  }
139  av_freep(&tee_slave->stream_map);
140  av_freep(&tee_slave->bsfs);
141 
142  ff_format_io_close(avf, &avf->pb);
144  tee_slave->avf = NULL;
145  return ret;
146 }
147 
148 static void close_slaves(AVFormatContext *avf)
149 {
150  TeeContext *tee = avf->priv_data;
151  unsigned i;
152 
153  for (i = 0; i < tee->nb_slaves; i++) {
154  close_slave(&tee->slaves[i]);
155  }
156  av_freep(&tee->slaves);
157 }
158 
159 static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
160 {
161  int i, ret;
162  AVDictionary *options = NULL;
163  AVDictionaryEntry *entry;
164  char *filename;
165  char *format = NULL, *select = NULL, *on_fail = NULL;
166  char *use_fifo = NULL, *fifo_options_str = NULL;
167  AVFormatContext *avf2 = NULL;
168  AVStream *st, *st2;
169  int stream_count;
170  int fullret;
171  char *subselect = NULL, *next_subselect = NULL, *first_subselect = NULL, *tmp_select = NULL;
172 
173  if ((ret = ff_tee_parse_slave_options(avf, slave, &options, &filename)) < 0)
174  return ret;
175 
176 #define STEAL_OPTION(option, field) do { \
177  if ((entry = av_dict_get(options, option, NULL, 0))) { \
178  field = entry->value; \
179  entry->value = NULL; /* prevent it from being freed */ \
180  av_dict_set(&options, option, NULL, 0); \
181  } \
182  } while (0)
183 
184  STEAL_OPTION("f", format);
185  STEAL_OPTION("select", select);
186  STEAL_OPTION("onfail", on_fail);
187  STEAL_OPTION("use_fifo", use_fifo);
188  STEAL_OPTION("fifo_options", fifo_options_str);
189 
190  ret = parse_slave_failure_policy_option(on_fail, tee_slave);
191  if (ret < 0) {
192  av_log(avf, AV_LOG_ERROR,
193  "Invalid onfail option value, valid options are 'abort' and 'ignore'\n");
194  goto end;
195  }
196 
197  ret = parse_slave_fifo_options(use_fifo, fifo_options_str, tee_slave);
198  if (ret < 0) {
199  av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n", av_err2str(ret));
200  goto end;
201  }
202 
203  if (tee_slave->use_fifo) {
204 
205  if (options) {
206  char *format_options_str = NULL;
207  ret = av_dict_get_string(options, &format_options_str, '=', ':');
208  if (ret < 0)
209  goto end;
210 
211  ret = av_dict_set(&tee_slave->fifo_options, "format_opts", format_options_str,
213  if (ret < 0)
214  goto end;
215  }
216 
217  if (format) {
218  ret = av_dict_set(&tee_slave->fifo_options, "fifo_format", format,
220  format = NULL;
221  if (ret < 0)
222  goto end;
223  }
224 
225  av_dict_free(&options);
226  options = tee_slave->fifo_options;
227  }
229  tee_slave->use_fifo ? "fifo" :format, filename);
230  if (ret < 0)
231  goto end;
232  tee_slave->avf = avf2;
233  av_dict_copy(&avf2->metadata, avf->metadata, 0);
234  avf2->opaque = avf->opaque;
235  avf2->io_open = avf->io_open;
236  avf2->io_close = avf->io_close;
238  avf2->flags = avf->flags;
239 
240  tee_slave->stream_map = av_calloc(avf->nb_streams, sizeof(*tee_slave->stream_map));
241  if (!tee_slave->stream_map) {
242  ret = AVERROR(ENOMEM);
243  goto end;
244  }
245 
246  stream_count = 0;
247  for (i = 0; i < avf->nb_streams; i++) {
248  st = avf->streams[i];
249  if (select) {
250  tmp_select = av_strdup(select); // av_strtok is destructive so we regenerate it in each loop
251  if (!tmp_select) {
252  ret = AVERROR(ENOMEM);
253  goto end;
254  }
255  fullret = 0;
256  first_subselect = tmp_select;
257  next_subselect = NULL;
258  while (subselect = av_strtok(first_subselect, slave_select_sep, &next_subselect)) {
259  first_subselect = NULL;
260 
261  ret = avformat_match_stream_specifier(avf, avf->streams[i], subselect);
262  if (ret < 0) {
263  av_log(avf, AV_LOG_ERROR,
264  "Invalid stream specifier '%s' for output '%s'\n",
265  subselect, slave);
266  goto end;
267  }
268  if (ret != 0) {
269  fullret = 1; // match
270  break;
271  }
272  }
273  av_freep(&tmp_select);
274 
275  if (fullret == 0) { /* no match */
276  tee_slave->stream_map[i] = -1;
277  continue;
278  }
279  }
280  tee_slave->stream_map[i] = stream_count++;
281 
282  if (!(st2 = avformat_new_stream(avf2, NULL))) {
283  ret = AVERROR(ENOMEM);
284  goto end;
285  }
286 
287  ret = ff_stream_encode_params_copy(st2, st);
288  if (ret < 0)
289  goto end;
290  }
291 
292  ret = ff_format_output_open(avf2, filename, NULL);
293  if (ret < 0) {
294  av_log(avf, AV_LOG_ERROR, "Slave '%s': error opening: %s\n", slave,
295  av_err2str(ret));
296  goto end;
297  }
298 
299  if ((ret = avformat_write_header(avf2, &options)) < 0) {
300  av_log(avf, AV_LOG_ERROR, "Slave '%s': error writing header: %s\n",
301  slave, av_err2str(ret));
302  goto end;
303  }
304  tee_slave->header_written = 1;
305 
306  tee_slave->bsfs = av_calloc(avf2->nb_streams, sizeof(*tee_slave->bsfs));
307  if (!tee_slave->bsfs) {
308  ret = AVERROR(ENOMEM);
309  goto end;
310  }
311 
312  entry = NULL;
313  while (entry = av_dict_get(options, "bsfs", NULL, AV_DICT_IGNORE_SUFFIX)) {
314  const char *spec = entry->key + strlen("bsfs");
315  if (*spec) {
316  if (strspn(spec, slave_bsfs_spec_sep) != 1) {
317  av_log(avf, AV_LOG_ERROR,
318  "Specifier separator in '%s' is '%c', but only characters '%s' "
319  "are allowed\n", entry->key, *spec, slave_bsfs_spec_sep);
320  ret = AVERROR(EINVAL);
321  goto end;
322  }
323  spec++; /* consume separator */
324  }
325 
326  for (i = 0; i < avf2->nb_streams; i++) {
327  ret = avformat_match_stream_specifier(avf2, avf2->streams[i], spec);
328  if (ret < 0) {
329  av_log(avf, AV_LOG_ERROR,
330  "Invalid stream specifier '%s' in bsfs option '%s' for slave "
331  "output '%s'\n", spec, entry->key, filename);
332  goto end;
333  }
334 
335  if (ret > 0) {
336  av_log(avf, AV_LOG_DEBUG, "spec:%s bsfs:%s matches stream %d of slave "
337  "output '%s'\n", spec, entry->value, i, filename);
338  if (tee_slave->bsfs[i]) {
339  av_log(avf, AV_LOG_WARNING,
340  "Duplicate bsfs specification associated to stream %d of slave "
341  "output '%s', filters will be ignored\n", i, filename);
342  continue;
343  }
344  ret = av_bsf_list_parse_str(entry->value, &tee_slave->bsfs[i]);
345  if (ret < 0) {
346  av_log(avf, AV_LOG_ERROR,
347  "Error parsing bitstream filter sequence '%s' associated to "
348  "stream %d of slave output '%s'\n", entry->value, i, filename);
349  goto end;
350  }
351  }
352  }
353 
354  av_dict_set(&options, entry->key, NULL, 0);
355  }
356 
357  for (i = 0; i < avf->nb_streams; i++){
358  int target_stream = tee_slave->stream_map[i];
359  if (target_stream < 0)
360  continue;
361 
362  if (!tee_slave->bsfs[target_stream]) {
363  /* Add pass-through bitstream filter */
364  ret = av_bsf_get_null_filter(&tee_slave->bsfs[target_stream]);
365  if (ret < 0) {
366  av_log(avf, AV_LOG_ERROR,
367  "Failed to create pass-through bitstream filter: %s\n",
368  av_err2str(ret));
369  goto end;
370  }
371  }
372 
373  tee_slave->bsfs[target_stream]->time_base_in = avf->streams[i]->time_base;
374  ret = avcodec_parameters_copy(tee_slave->bsfs[target_stream]->par_in,
375  avf->streams[i]->codecpar);
376  if (ret < 0)
377  goto end;
378 
379  ret = av_bsf_init(tee_slave->bsfs[target_stream]);
380  if (ret < 0) {
381  av_log(avf, AV_LOG_ERROR,
382  "Failed to initialize bitstream filter(s): %s\n",
383  av_err2str(ret));
384  goto end;
385  }
386  }
387 
388  if (options) {
389  entry = NULL;
390  while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX)))
391  av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
393  goto end;
394  }
395 
396 end:
397  av_free(format);
398  av_free(select);
399  av_free(on_fail);
400  av_dict_free(&options);
401  av_freep(&tmp_select);
402  return ret;
403 }
404 
405 static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
406 {
407  int i;
408  av_log(log_ctx, log_level, "filename:'%s' format:%s\n",
409  slave->avf->filename, slave->avf->oformat->name);
410  for (i = 0; i < slave->avf->nb_streams; i++) {
411  AVStream *st = slave->avf->streams[i];
412  AVBSFContext *bsf = slave->bsfs[i];
413  const char *bsf_name;
414 
415  av_log(log_ctx, log_level, " stream:%d codec:%s type:%s",
418 
419  bsf_name = bsf->filter->priv_class ?
420  bsf->filter->priv_class->item_name(bsf) : bsf->filter->name;
421  av_log(log_ctx, log_level, " bsfs: %s\n", bsf_name);
422  }
423 }
424 
425 static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
426 {
427  TeeContext *tee = avf->priv_data;
428  TeeSlave *tee_slave = &tee->slaves[slave_idx];
429 
430  tee->nb_alive--;
431 
432  close_slave(tee_slave);
433 
434  if (!tee->nb_alive) {
435  av_log(avf, AV_LOG_ERROR, "All tee outputs failed.\n");
436  return err_n;
437  } else if (tee_slave->on_fail == ON_SLAVE_FAILURE_ABORT) {
438  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed, aborting.\n", slave_idx);
439  return err_n;
440  } else {
441  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed: %s, continuing with %u/%u slaves.\n",
442  slave_idx, av_err2str(err_n), tee->nb_alive, tee->nb_slaves);
443  return 0;
444  }
445 }
446 
448 {
449  TeeContext *tee = avf->priv_data;
450  unsigned nb_slaves = 0, i;
451  const char *filename = avf->filename;
452  char **slaves = NULL;
453  int ret;
454 
455  while (*filename) {
456  char *slave = av_get_token(&filename, slave_delim);
457  if (!slave) {
458  ret = AVERROR(ENOMEM);
459  goto fail;
460  }
461  ret = av_dynarray_add_nofree(&slaves, &nb_slaves, slave);
462  if (ret < 0) {
463  av_free(slave);
464  goto fail;
465  }
466  if (strspn(filename, slave_delim))
467  filename++;
468  }
469 
470  if (tee->fifo_options_str) {
471  ret = av_dict_parse_string(&tee->fifo_options, tee->fifo_options_str, "=", ":", 0);
472  if (ret < 0)
473  goto fail;
474  }
475 
476  if (!(tee->slaves = av_mallocz_array(nb_slaves, sizeof(*tee->slaves)))) {
477  ret = AVERROR(ENOMEM);
478  goto fail;
479  }
480  tee->nb_slaves = tee->nb_alive = nb_slaves;
481 
482  for (i = 0; i < nb_slaves; i++) {
483 
484  tee->slaves[i].use_fifo = tee->use_fifo;
485  ret = av_dict_copy(&tee->slaves[i].fifo_options, tee->fifo_options, 0);
486  if (ret < 0)
487  goto fail;
488 
489  if ((ret = open_slave(avf, slaves[i], &tee->slaves[i])) < 0) {
490  ret = tee_process_slave_failure(avf, i, ret);
491  if (ret < 0)
492  goto fail;
493  } else {
494  log_slave(&tee->slaves[i], avf, AV_LOG_VERBOSE);
495  }
496  av_freep(&slaves[i]);
497  }
498 
499  for (i = 0; i < avf->nb_streams; i++) {
500  int j, mapped = 0;
501  for (j = 0; j < tee->nb_slaves; j++)
502  if (tee->slaves[j].avf)
503  mapped += tee->slaves[j].stream_map[i] >= 0;
504  if (!mapped)
505  av_log(avf, AV_LOG_WARNING, "Input stream #%d is not mapped "
506  "to any slave.\n", i);
507  }
508  av_free(slaves);
509  return 0;
510 
511 fail:
512  for (i = 0; i < nb_slaves; i++)
513  av_freep(&slaves[i]);
514  close_slaves(avf);
515  av_free(slaves);
516  return ret;
517 }
518 
520 {
521  TeeContext *tee = avf->priv_data;
522  int ret_all = 0, ret;
523  unsigned i;
524 
525  for (i = 0; i < tee->nb_slaves; i++) {
526  if ((ret = close_slave(&tee->slaves[i])) < 0) {
527  ret = tee_process_slave_failure(avf, i, ret);
528  if (!ret_all && ret < 0)
529  ret_all = ret;
530  }
531  }
532  av_freep(&tee->slaves);
533  return ret_all;
534 }
535 
537 {
538  TeeContext *tee = avf->priv_data;
539  AVFormatContext *avf2;
540  AVBSFContext *bsfs;
541  AVPacket pkt2;
542  int ret_all = 0, ret;
543  unsigned i, s;
544  int s2;
545 
546  for (i = 0; i < tee->nb_slaves; i++) {
547  if (!(avf2 = tee->slaves[i].avf))
548  continue;
549 
550  /* Flush slave if pkt is NULL*/
551  if (!pkt) {
552  ret = av_interleaved_write_frame(avf2, NULL);
553  if (ret < 0) {
554  ret = tee_process_slave_failure(avf, i, ret);
555  if (!ret_all && ret < 0)
556  ret_all = ret;
557  }
558  continue;
559  }
560 
561  s = pkt->stream_index;
562  s2 = tee->slaves[i].stream_map[s];
563  if (s2 < 0)
564  continue;
565 
566  memset(&pkt2, 0, sizeof(AVPacket));
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:681
void av_bsf_free(AVBSFContext **ctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:35
#define NULL
Definition: coverity.c:32
static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
Definition: tee.c:536
const char * s
Definition: avisynth_c.h:768
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions. ...
Definition: avcodec.h:5549
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:1199
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1581
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:86
static int parse_slave_fifo_options(const char *use_fifo, const char *fifo_options, TeeSlave *tee_slave)
Definition: tee.c:99
TeeSlave * slaves
Definition: tee.c:56
static int tee_write_trailer(AVFormatContext *avf)
Definition: tee.c:519
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3736
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: avcodec.h:5490
The bitstream filter state.
Definition: avcodec.h:5481
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
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:63
Convenience header that includes libavutil's core.
static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
Definition: tee.c:405
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
int av_bsf_get_null_filter(AVBSFContext **bsf)
Get null/pass-through bitstream filter.
Definition: bsf.c:539
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:478
static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
Definition: tee.c:425
static const char *const slave_delim
Definition: tee.c:62
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:134
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:244
Format I/O context.
Definition: avformat.h:1325
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
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:196
AVOutputFormat ff_tee_muxer
Definition: tee.c:609
static int close_slave(TeeSlave *tee_slave)
Definition: tee.c:122
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5454
static void close_slaves(AVFormatContext *avf)
Definition: tee.c:148
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:4967
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4377
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1393
const char * name
Definition: avcodec.h:5531
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:1436
int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
Utility function to open IO stream of output format.
Definition: utils.c:5444
static int flags
Definition: log.c:57
int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
Copy encoding parameters from source to destination stream.
Definition: utils.c:4199
#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:294
static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
Definition: tee.c:159
#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:64
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1344
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:599
int avformat_alloc_output_context2(AVFormatContext **ctx, AVOutputFormat *oformat, const char *format_name, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:148
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2224
#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:1543
int use_fifo
Definition: tee.c:57
void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another...
Definition: avpacket.c:653
#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:186
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: avcodec.h:3732
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: avcodec.h:5521
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:343
AVDictionary * fifo_options
Definition: tee.c:58
AVDictionary * fifo_options
Definition: tee.c:44
#define fail()
Definition: checkasm.h:111
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
#define OFFSET(x)
Definition: tee.c:66
void * opaque
User data.
Definition: avformat.h:1809
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1381
Definition: tee.c:38
char filename[1024]
input or output filename
Definition: avformat.h:1401
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:508
static const AVClass tee_muxer_class
Definition: tee.c:75
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'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: avcodec.h:5527
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:175
const char * name
Definition: avformat.h:507
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
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
int use_fifo
Definition: tee.c:43
static const AVOption options[]
Definition: tee.c:67
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:1268
Stream structure.
Definition: avformat.h:872
char * fifo_options_str
Definition: tee.c:59
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
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
Definition: tee.c:52
AVIOContext * pb
I/O context.
Definition: avformat.h:1367
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
static const char * format
Definition: movenc.c:47
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:4312
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
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.
int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf)
Parse string describing list of bitstream filters and create single AVBSFContext describing the whole...
Definition: bsf.c:501
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:465
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:1353
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:337
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1261
#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
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1014
int stream_index
Definition: avcodec.h:1401
static int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave)
Definition: tee.c:82
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:901
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1885
This structure stores compressed data.
Definition: avcodec.h:1376
AVCodecParameters * par_in
Parameters of the input stream.
Definition: avcodec.h:5509
AVFormatContext * avf
Definition: tee.c:39
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1891
static int tee_write_header(AVFormatContext *avf)
Definition: tee.c:447
#define STEAL_OPTION(option, field)
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191