FFmpeg
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 "libavcodec/bsf.h"
27 #include "internal.h"
28 #include "avformat.h"
29 #include "avio_internal.h"
30 #include "tee_common.h"
31 
32 typedef enum {
36 
37 #define DEFAULT_SLAVE_FAILURE_POLICY ON_SLAVE_FAILURE_ABORT
38 
39 typedef struct {
41  AVBSFContext **bsfs; ///< bitstream filters per stream
42 
44  int use_fifo;
46 
47  /** map from input to output streams indexes,
48  * disabled output streams are set to -1 */
49  int *stream_map;
51 } TeeSlave;
52 
53 typedef struct TeeContext {
54  const AVClass *class;
55  unsigned nb_slaves;
56  unsigned nb_alive;
58  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),
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, *bsf_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  entry = NULL;
190  while ((entry = av_dict_get(options, "bsfs", entry, AV_DICT_IGNORE_SUFFIX))) {
191  /* trim out strlen("bsfs") characters from key */
192  av_dict_set(&bsf_options, entry->key + 4, entry->value, 0);
193  av_dict_set(&options, entry->key, NULL, 0);
194  }
195 
196  ret = parse_slave_failure_policy_option(on_fail, tee_slave);
197  if (ret < 0) {
198  av_log(avf, AV_LOG_ERROR,
199  "Invalid onfail option value, valid options are 'abort' and 'ignore'\n");
200  goto end;
201  }
202 
203  ret = parse_slave_fifo_options(use_fifo, fifo_options_str, tee_slave);
204  if (ret < 0) {
205  av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n", av_err2str(ret));
206  goto end;
207  }
208 
209  if (tee_slave->use_fifo) {
210 
211  if (options) {
212  char *format_options_str = NULL;
213  ret = av_dict_get_string(options, &format_options_str, '=', ':');
214  if (ret < 0)
215  goto end;
216 
217  ret = av_dict_set(&tee_slave->fifo_options, "format_opts", format_options_str,
219  if (ret < 0)
220  goto end;
221  }
222 
223  if (format) {
224  ret = av_dict_set(&tee_slave->fifo_options, "fifo_format", format,
226  format = NULL;
227  if (ret < 0)
228  goto end;
229  }
230 
232  options = tee_slave->fifo_options;
233  }
235  tee_slave->use_fifo ? "fifo" :format, filename);
236  if (ret < 0)
237  goto end;
238  tee_slave->avf = avf2;
239  av_dict_copy(&avf2->metadata, avf->metadata, 0);
240  avf2->opaque = avf->opaque;
241  avf2->io_open = avf->io_open;
242  avf2->io_close = avf->io_close;
244  avf2->flags = avf->flags;
246 
247  tee_slave->stream_map = av_calloc(avf->nb_streams, sizeof(*tee_slave->stream_map));
248  if (!tee_slave->stream_map) {
249  ret = AVERROR(ENOMEM);
250  goto end;
251  }
252 
253  stream_count = 0;
254  for (i = 0; i < avf->nb_streams; i++) {
255  st = avf->streams[i];
256  if (select) {
257  tmp_select = av_strdup(select); // av_strtok is destructive so we regenerate it in each loop
258  if (!tmp_select) {
259  ret = AVERROR(ENOMEM);
260  goto end;
261  }
262  fullret = 0;
263  first_subselect = tmp_select;
264  next_subselect = NULL;
265  while (subselect = av_strtok(first_subselect, slave_select_sep, &next_subselect)) {
266  first_subselect = NULL;
267 
268  ret = avformat_match_stream_specifier(avf, avf->streams[i], subselect);
269  if (ret < 0) {
270  av_log(avf, AV_LOG_ERROR,
271  "Invalid stream specifier '%s' for output '%s'\n",
272  subselect, slave);
273  goto end;
274  }
275  if (ret != 0) {
276  fullret = 1; // match
277  break;
278  }
279  }
280  av_freep(&tmp_select);
281 
282  if (fullret == 0) { /* no match */
283  tee_slave->stream_map[i] = -1;
284  continue;
285  }
286  }
287  tee_slave->stream_map[i] = stream_count++;
288 
289  if (!(st2 = avformat_new_stream(avf2, NULL))) {
290  ret = AVERROR(ENOMEM);
291  goto end;
292  }
293 
295  if (ret < 0)
296  goto end;
297  }
298 
299  ret = ff_format_output_open(avf2, filename, &options);
300  if (ret < 0) {
301  av_log(avf, AV_LOG_ERROR, "Slave '%s': error opening: %s\n", slave,
302  av_err2str(ret));
303  goto end;
304  }
305 
306  if ((ret = avformat_write_header(avf2, &options)) < 0) {
307  av_log(avf, AV_LOG_ERROR, "Slave '%s': error writing header: %s\n",
308  slave, av_err2str(ret));
309  goto end;
310  }
311  tee_slave->header_written = 1;
312 
313  tee_slave->bsfs = av_calloc(avf2->nb_streams, sizeof(*tee_slave->bsfs));
314  if (!tee_slave->bsfs) {
315  ret = AVERROR(ENOMEM);
316  goto end;
317  }
318 
319  entry = NULL;
320  while (entry = av_dict_get(bsf_options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
321  const char *spec = entry->key;
322  if (*spec) {
323  if (strspn(spec, slave_bsfs_spec_sep) != 1) {
324  av_log(avf, AV_LOG_ERROR,
325  "Specifier separator in '%s' is '%c', but only characters '%s' "
326  "are allowed\n", entry->key, *spec, slave_bsfs_spec_sep);
327  ret = AVERROR(EINVAL);
328  goto end;
329  }
330  spec++; /* consume separator */
331  }
332 
333  for (i = 0; i < avf2->nb_streams; i++) {
334  ret = avformat_match_stream_specifier(avf2, avf2->streams[i], spec);
335  if (ret < 0) {
336  av_log(avf, AV_LOG_ERROR,
337  "Invalid stream specifier '%s' in bsfs option '%s' for slave "
338  "output '%s'\n", spec, entry->key, filename);
339  goto end;
340  }
341 
342  if (ret > 0) {
343  av_log(avf, AV_LOG_DEBUG, "spec:%s bsfs:%s matches stream %d of slave "
344  "output '%s'\n", spec, entry->value, i, filename);
345  if (tee_slave->bsfs[i]) {
346  av_log(avf, AV_LOG_WARNING,
347  "Duplicate bsfs specification associated to stream %d of slave "
348  "output '%s', filters will be ignored\n", i, filename);
349  continue;
350  }
351  ret = av_bsf_list_parse_str(entry->value, &tee_slave->bsfs[i]);
352  if (ret < 0) {
353  av_log(avf, AV_LOG_ERROR,
354  "Error parsing bitstream filter sequence '%s' associated to "
355  "stream %d of slave output '%s'\n", entry->value, i, filename);
356  goto end;
357  }
358  }
359  }
360 
361  av_dict_set(&bsf_options, entry->key, NULL, 0);
362  }
363 
364  for (i = 0; i < avf->nb_streams; i++){
365  int target_stream = tee_slave->stream_map[i];
366  if (target_stream < 0)
367  continue;
368 
369  if (!tee_slave->bsfs[target_stream]) {
370  /* Add pass-through bitstream filter */
371  ret = av_bsf_get_null_filter(&tee_slave->bsfs[target_stream]);
372  if (ret < 0) {
373  av_log(avf, AV_LOG_ERROR,
374  "Failed to create pass-through bitstream filter: %s\n",
375  av_err2str(ret));
376  goto end;
377  }
378  }
379 
380  tee_slave->bsfs[target_stream]->time_base_in = avf->streams[i]->time_base;
381  ret = avcodec_parameters_copy(tee_slave->bsfs[target_stream]->par_in,
382  avf->streams[i]->codecpar);
383  if (ret < 0)
384  goto end;
385 
386  ret = av_bsf_init(tee_slave->bsfs[target_stream]);
387  if (ret < 0) {
388  av_log(avf, AV_LOG_ERROR,
389  "Failed to initialize bitstream filter(s): %s\n",
390  av_err2str(ret));
391  goto end;
392  }
393  }
394 
395  if (options) {
396  entry = NULL;
397  while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX)))
398  av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
400  goto end;
401  }
402 
403 end:
404  av_free(format);
405  av_free(select);
406  av_free(on_fail);
408  av_dict_free(&bsf_options);
409  av_freep(&tmp_select);
410  return ret;
411 }
412 
413 static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
414 {
415  int i;
416  av_log(log_ctx, log_level, "filename:'%s' format:%s\n",
417  slave->avf->url, slave->avf->oformat->name);
418  for (i = 0; i < slave->avf->nb_streams; i++) {
419  AVStream *st = slave->avf->streams[i];
420  AVBSFContext *bsf = slave->bsfs[i];
421  const char *bsf_name;
422 
423  av_log(log_ctx, log_level, " stream:%d codec:%s type:%s",
426 
427  bsf_name = bsf->filter->priv_class ?
428  bsf->filter->priv_class->item_name(bsf) : bsf->filter->name;
429  av_log(log_ctx, log_level, " bsfs: %s\n", bsf_name);
430  }
431 }
432 
433 static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
434 {
435  TeeContext *tee = avf->priv_data;
436  TeeSlave *tee_slave = &tee->slaves[slave_idx];
437 
438  tee->nb_alive--;
439 
440  close_slave(tee_slave);
441 
442  if (!tee->nb_alive) {
443  av_log(avf, AV_LOG_ERROR, "All tee outputs failed.\n");
444  return err_n;
445  } else if (tee_slave->on_fail == ON_SLAVE_FAILURE_ABORT) {
446  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed, aborting.\n", slave_idx);
447  return err_n;
448  } else {
449  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed: %s, continuing with %u/%u slaves.\n",
450  slave_idx, av_err2str(err_n), tee->nb_alive, tee->nb_slaves);
451  return 0;
452  }
453 }
454 
456 {
457  TeeContext *tee = avf->priv_data;
458  unsigned nb_slaves = 0, i;
459  const char *filename = avf->url;
460  char **slaves = NULL;
461  int ret;
462 
463  while (*filename) {
464  char *slave = av_get_token(&filename, slave_delim);
465  if (!slave) {
466  ret = AVERROR(ENOMEM);
467  goto fail;
468  }
469  ret = av_dynarray_add_nofree(&slaves, &nb_slaves, slave);
470  if (ret < 0) {
471  av_free(slave);
472  goto fail;
473  }
474  if (strspn(filename, slave_delim))
475  filename++;
476  }
477 
478  if (!FF_ALLOCZ_TYPED_ARRAY(tee->slaves, nb_slaves)) {
479  ret = AVERROR(ENOMEM);
480  goto fail;
481  }
482  tee->nb_slaves = tee->nb_alive = nb_slaves;
483 
484  for (i = 0; i < nb_slaves; i++) {
485 
486  tee->slaves[i].use_fifo = tee->use_fifo;
487  ret = av_dict_copy(&tee->slaves[i].fifo_options, tee->fifo_options, 0);
488  if (ret < 0)
489  goto fail;
490 
491  if ((ret = open_slave(avf, slaves[i], &tee->slaves[i])) < 0) {
493  if (ret < 0)
494  goto fail;
495  } else {
496  log_slave(&tee->slaves[i], avf, AV_LOG_VERBOSE);
497  }
498  av_freep(&slaves[i]);
499  }
500 
501  for (i = 0; i < avf->nb_streams; i++) {
502  int j, mapped = 0;
503  for (j = 0; j < tee->nb_slaves; j++)
504  if (tee->slaves[j].avf)
505  mapped += tee->slaves[j].stream_map[i] >= 0;
506  if (!mapped)
507  av_log(avf, AV_LOG_WARNING, "Input stream #%d is not mapped "
508  "to any slave.\n", i);
509  }
510  av_free(slaves);
511  return 0;
512 
513 fail:
514  for (i = 0; i < nb_slaves; i++)
515  av_freep(&slaves[i]);
516  close_slaves(avf);
517  av_free(slaves);
518  return ret;
519 }
520 
522 {
523  TeeContext *tee = avf->priv_data;
524  int ret_all = 0, ret;
525  unsigned i;
526 
527  for (i = 0; i < tee->nb_slaves; i++) {
528  if ((ret = close_slave(&tee->slaves[i])) < 0) {
530  if (!ret_all && ret < 0)
531  ret_all = ret;
532  }
533  }
534  av_freep(&tee->slaves);
535  return ret_all;
536 }
537 
539 {
540  TeeContext *tee = avf->priv_data;
541  AVFormatContext *avf2;
542  AVBSFContext *bsfs;
543  AVPacket pkt2;
544  int ret_all = 0, ret;
545  unsigned i, s;
546  int s2;
547 
548  for (i = 0; i < tee->nb_slaves; i++) {
549  if (!(avf2 = tee->slaves[i].avf))
550  continue;
551 
552  /* Flush slave if pkt is NULL*/
553  if (!pkt) {
555  if (ret < 0) {
557  if (!ret_all && ret < 0)
558  ret_all = ret;
559  }
560  continue;
561  }
562 
563  s = pkt->stream_index;
564  s2 = tee->slaves[i].stream_map[s];
565  if (s2 < 0)
566  continue;
567 
568  if ((ret = av_packet_ref(&pkt2, pkt)) < 0)
569  if (!ret_all) {
570  ret_all = ret;
571  continue;
572  }
573  bsfs = tee->slaves[i].bsfs[s2];
574  pkt2.stream_index = s2;
575 
576  ret = av_bsf_send_packet(bsfs, &pkt2);
577  if (ret < 0) {
578  av_log(avf, AV_LOG_ERROR, "Error while sending packet to bitstream filter: %s\n",
579  av_err2str(ret));
581  if (!ret_all && ret < 0)
582  ret_all = ret;
583  }
584 
585  while(1) {
586  ret = av_bsf_receive_packet(bsfs, &pkt2);
587  if (ret == AVERROR(EAGAIN)) {
588  ret = 0;
589  break;
590  } else if (ret < 0) {
591  break;
592  }
593 
594  av_packet_rescale_ts(&pkt2, bsfs->time_base_out,
595  avf2->streams[s2]->time_base);
596  ret = av_interleaved_write_frame(avf2, &pkt2);
597  if (ret < 0)
598  break;
599  };
600 
601  if (ret < 0) {
603  if (!ret_all && ret < 0)
604  ret_all = ret;
605  }
606  }
607  return ret_all;
608 }
609 
611  .name = "tee",
612  .long_name = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
613  .priv_data_size = sizeof(TeeContext),
617  .priv_class = &tee_muxer_class,
619 };
FF_ALLOCZ_TYPED_ARRAY
#define FF_ALLOCZ_TYPED_ARRAY(p, nelem)
Definition: internal.h:98
AVBSFContext::par_in
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:69
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
ON_SLAVE_FAILURE_IGNORE
@ ON_SLAVE_FAILURE_IGNORE
Definition: tee.c:34
AVOutputFormat::name
const char * name
Definition: avformat.h:496
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:724
TeeSlave::bsfs
AVBSFContext ** bsfs
bitstream filters per stream
Definition: tee.c:41
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
TeeSlave::stream_map
int * stream_map
map from input to output streams indexes, disabled output streams are set to -1
Definition: tee.c:49
av_get_token
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:151
ff_format_output_open
int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
Utility function to open IO stream of output format.
Definition: utils.c:1788
AVBitStreamFilter::name
const char * name
Definition: bsf.h:91
av_strcasecmp
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:215
av_bsf_init
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:145
AVFormatContext::streams
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1165
AVFormatContext::strict_std_compliance
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1394
OFFSET
#define OFFSET(x)
Definition: tee.c:66
ff_tee_parse_slave_options
int ff_tee_parse_slave_options(void *log, char *slave, AVDictionary **options, char **filename)
Definition: tee_common.c:32
AVOption
AVOption.
Definition: opt.h:247
AV_DICT_IGNORE_SUFFIX
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:68
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
tee_write_trailer
static int tee_write_trailer(AVFormatContext *avf)
Definition: tee.c:521
AVDictionary
Definition: dict.c:30
tee_write_packet
static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
Definition: tee.c:538
TeeContext::use_fifo
int use_fifo
Definition: tee.c:58
TeeContext::nb_slaves
unsigned nb_slaves
Definition: tee.c:55
AVBSFContext
The bitstream filter state.
Definition: bsf.h:47
ON_SLAVE_FAILURE_ABORT
@ ON_SLAVE_FAILURE_ABORT
Definition: tee.c:33
STEAL_OPTION
#define STEAL_OPTION(option, field)
tee_common.h
AVFormatContext::interrupt_callback
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1364
bsf.h
fail
#define fail()
Definition: checkasm.h:127
AVERROR_OPTION_NOT_FOUND
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:63
av_bsf_get_null_filter
int av_bsf_get_null_filter(AVBSFContext **bsf)
Get null/pass-through bitstream filter.
Definition: bsf.c:549
AV_DICT_DONT_STRDUP_VAL
#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:72
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AVFormatContext::metadata
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1326
av_dict_get
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
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_OPT_FLAG_ENCODING_PARAM
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:277
tee_muxer_class
static const AVClass tee_muxer_class
Definition: tee.c:75
AVFormatContext::flags
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1215
AVDictionaryEntry::key
char * key
Definition: dict.h:80
slave_bsfs_spec_sep
static const char *const slave_bsfs_spec_sep
Definition: tee.c:63
av_strtok
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:186
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
TeeContext::slaves
TeeSlave * slaves
Definition: tee.c:57
AVBSFContext::time_base_in
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:81
TeeContext::fifo_options
AVDictionary * fifo_options
Definition: tee.c:59
slave_select_sep
static const char *const slave_select_sep
Definition: tee.c:64
AVFormatContext::opaque
void * opaque
User data.
Definition: avformat.h:1602
tee_process_slave_failure
static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
Definition: tee.c:433
avformat_write_header
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:467
AVFormatContext
Format I/O context.
Definition: avformat.h:1097
parse_slave_fifo_options
static int parse_slave_fifo_options(const char *use_fifo, const char *fifo_options, TeeSlave *tee_slave)
Definition: tee.c:99
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:992
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
AVStream::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:868
NULL
#define NULL
Definition: coverity.c:32
av_bsf_list_parse_str
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:522
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
AV_OPT_TYPE_DICT
@ AV_OPT_TYPE_DICT
Definition: opt.h:231
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
close_slave
static int close_slave(TeeSlave *tee_slave)
Definition: tee.c:122
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1139
TeeContext::nb_alive
unsigned nb_alive
Definition: tee.c:56
AVBitStreamFilter::priv_class
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions.
Definition: bsf.h:109
av_packet_ref
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:425
TeeSlave::on_fail
SlaveFailurePolicy on_fail
Definition: tee.c:43
AVFormatContext::nb_streams
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1153
s2
#define s2
Definition: regdef.h:39
TeeSlave
Definition: tee.c:39
avformat_match_stream_specifier
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:1492
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
av_err2str
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:121
AVFormatContext::url
char * url
input or output URL.
Definition: avformat.h:1180
AVFMT_ALLOW_FLUSH
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:476
close_slaves
static void close_slaves(AVFormatContext *avf)
Definition: tee.c:148
AVFMT_NOFILE
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:463
TeeSlave::fifo_options
AVDictionary * fifo_options
Definition: tee.c:45
DEFAULT_SLAVE_FAILURE_POLICY
#define DEFAULT_SLAVE_FAILURE_POLICY
Definition: tee.c:37
TeeContext
Definition: tee.c:53
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
options
static const AVOption options[]
Definition: tee.c:67
av_packet_rescale_ts
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:521
TeeSlave::use_fifo
int use_fifo
Definition: tee.c:44
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:731
avcodec_parameters_copy
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: codec_par.c:72
avcodec_get_name
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:447
open_slave
static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
Definition: tee.c:159
av_write_trailer
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
i
int i
Definition: input.c:406
av_bsf_receive_packet
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:226
AVOutputFormat
Definition: avformat.h:495
avio_internal.h
TeeSlave::header_written
int header_written
Definition: tee.c:50
AVBSFContext::time_base_out
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: bsf.h:87
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:271
AVFMT_TS_NEGATIVE
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:480
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:845
AVClass::class_name
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:71
AVFormatContext::oformat
const struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1116
avformat.h
av_bsf_send_packet
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:198
parse_slave_failure_policy_option
static int parse_slave_failure_policy_option(const char *opt, TeeSlave *tee_slave)
Definition: tee.c:82
log_slave
static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
Definition: tee.c:413
av_dynarray_add_nofree
int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
Add an element to a dynamic array.
Definition: mem.c:322
av_get_media_type_string
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
ff_stream_encode_params_copy
int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
Copy encoding parameters from source to destination stream.
Definition: utils.c:586
SlaveFailurePolicy
SlaveFailurePolicy
Definition: tee.c:32
tee_write_header
static int tee_write_header(AVFormatContext *avf)
Definition: tee.c:455
av_match_name
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:353
avformat_free_context
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:679
av_dict_parse_string
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
AVFormatContext::io_close
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1662
AVFormatContext::io_open
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:1656
slave_delim
static const char *const slave_delim
Definition: tee.c:62
AVPacket::stream_index
int stream_index
Definition: packet.h:375
AVBSFContext::filter
const struct AVBitStreamFilter * filter
The bitstream filter this context is an instance of.
Definition: bsf.h:56
ff_format_io_close
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:1798
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:279
avutil.h
TeeSlave::avf
AVFormatContext * avf
Definition: tee.c:40
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVDictionaryEntry
Definition: dict.h:79
ff_tee_muxer
const AVOutputFormat ff_tee_muxer
Definition: tee.c:610
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
av_interleaved_write_frame
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file ensuring correct interleaving.
Definition: mux.c:1236
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
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
av_dict_get_string
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
av_dict_copy
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
format
fg outputs[0] format
Definition: ffmpeg_filter.c:175
av_bsf_free
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:48
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVDictionaryEntry::value
char * value
Definition: dict.h:81
avstring.h
AVClass::item_name
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:77
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:347
avformat_alloc_output_context2
int avformat_alloc_output_context2(AVFormatContext **ctx, const AVOutputFormat *oformat, const char *format_name, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:136
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1125