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_policy(const char *use_fifo, TeeSlave *tee_slave)
100 {
101  /*TODO - change this to use proper function for parsing boolean
102  * options when there is one */
103  if (av_match_name(use_fifo, "true,y,yes,enable,enabled,on,1")) {
104  tee_slave->use_fifo = 1;
105  } else if (av_match_name(use_fifo, "false,n,no,disable,disabled,off,0")) {
106  tee_slave->use_fifo = 0;
107  } else {
108  return AVERROR(EINVAL);
109  }
110  return 0;
111 }
112 
113 static int parse_slave_fifo_options(const char *fifo_options, TeeSlave *tee_slave)
114 {
115  return av_dict_parse_string(&tee_slave->fifo_options, fifo_options, "=", ":", 0);
116 }
117 
118 static int close_slave(TeeSlave *tee_slave)
119 {
120  AVFormatContext *avf;
121  unsigned i;
122  int ret = 0;
123 
124  av_dict_free(&tee_slave->fifo_options);
125  avf = tee_slave->avf;
126  if (!avf)
127  return 0;
128 
129  if (tee_slave->header_written)
130  ret = av_write_trailer(avf);
131 
132  if (tee_slave->bsfs) {
133  for (i = 0; i < avf->nb_streams; ++i)
134  av_bsf_free(&tee_slave->bsfs[i]);
135  }
136  av_freep(&tee_slave->stream_map);
137  av_freep(&tee_slave->bsfs);
138 
139  ff_format_io_close(avf, &avf->pb);
141  tee_slave->avf = NULL;
142  return ret;
143 }
144 
145 static void close_slaves(AVFormatContext *avf)
146 {
147  TeeContext *tee = avf->priv_data;
148  unsigned i;
149 
150  for (i = 0; i < tee->nb_slaves; i++) {
151  close_slave(&tee->slaves[i]);
152  }
153  av_freep(&tee->slaves);
154 }
155 
156 static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
157 {
158  int i, ret;
159  AVDictionary *options = NULL, *bsf_options = NULL;
160  AVDictionaryEntry *entry;
161  char *filename;
162  char *format = NULL, *select = NULL, *on_fail = NULL;
163  char *use_fifo = NULL, *fifo_options_str = NULL;
164  AVFormatContext *avf2 = NULL;
165  AVStream *st, *st2;
166  int stream_count;
167  int fullret;
168  char *subselect = NULL, *next_subselect = NULL, *first_subselect = NULL, *tmp_select = NULL;
169 
170  if ((ret = ff_tee_parse_slave_options(avf, slave, &options, &filename)) < 0)
171  return ret;
172 
173 #define CONSUME_OPTION(option, field, action) do { \
174  if ((entry = av_dict_get(options, option, NULL, 0))) { \
175  field = entry->value; \
176  { action } \
177  av_dict_set(&options, option, NULL, 0); \
178  } \
179  } while (0)
180 #define STEAL_OPTION(option, field) \
181  CONSUME_OPTION(option, field, \
182  entry->value = NULL; /* prevent it from being freed */)
183 #define PROCESS_OPTION(option, field, function, on_error) \
184  CONSUME_OPTION(option, field, if ((ret = function) < 0) { { on_error } goto end; })
185 
186  STEAL_OPTION("f", format);
187  STEAL_OPTION("select", select);
188  PROCESS_OPTION("onfail", on_fail,
189  parse_slave_failure_policy_option(on_fail, tee_slave),
190  av_log(avf, AV_LOG_ERROR, "Invalid onfail option value, "
191  "valid options are 'abort' and 'ignore'\n"););
192  PROCESS_OPTION("use_fifo", use_fifo,
193  parse_slave_fifo_policy(use_fifo, tee_slave),
194  av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n",
195  av_err2str(ret)););
196  PROCESS_OPTION("fifo_options", fifo_options_str,
197  parse_slave_fifo_options(fifo_options_str, tee_slave), ;);
198  entry = NULL;
199  while ((entry = av_dict_get(options, "bsfs", entry, AV_DICT_IGNORE_SUFFIX))) {
200  /* trim out strlen("bsfs") characters from key */
201  av_dict_set(&bsf_options, entry->key + 4, entry->value, 0);
202  av_dict_set(&options, entry->key, NULL, 0);
203  }
204 
205  if (tee_slave->use_fifo) {
206 
207  if (options) {
208  char *format_options_str = NULL;
209  ret = av_dict_get_string(options, &format_options_str, '=', ':');
210  if (ret < 0)
211  goto end;
212 
213  ret = av_dict_set(&tee_slave->fifo_options, "format_opts", format_options_str,
215  if (ret < 0)
216  goto end;
217  }
218 
219  if (format) {
220  ret = av_dict_set(&tee_slave->fifo_options, "fifo_format", format,
222  format = NULL;
223  if (ret < 0)
224  goto end;
225  }
226 
228  options = tee_slave->fifo_options;
229  tee_slave->fifo_options = NULL;
230  }
232  tee_slave->use_fifo ? "fifo" :format, filename);
233  if (ret < 0)
234  goto end;
235  tee_slave->avf = avf2;
236  av_dict_copy(&avf2->metadata, avf->metadata, 0);
237  avf2->opaque = avf->opaque;
238  avf2->io_open = avf->io_open;
239  avf2->io_close = avf->io_close;
241  avf2->flags = avf->flags;
243 
244  tee_slave->stream_map = av_calloc(avf->nb_streams, sizeof(*tee_slave->stream_map));
245  if (!tee_slave->stream_map) {
246  ret = AVERROR(ENOMEM);
247  goto end;
248  }
249 
250  stream_count = 0;
251  for (i = 0; i < avf->nb_streams; i++) {
252  st = avf->streams[i];
253  if (select) {
254  tmp_select = av_strdup(select); // av_strtok is destructive so we regenerate it in each loop
255  if (!tmp_select) {
256  ret = AVERROR(ENOMEM);
257  goto end;
258  }
259  fullret = 0;
260  first_subselect = tmp_select;
261  next_subselect = NULL;
262  while (subselect = av_strtok(first_subselect, slave_select_sep, &next_subselect)) {
263  first_subselect = NULL;
264 
265  ret = avformat_match_stream_specifier(avf, avf->streams[i], subselect);
266  if (ret < 0) {
267  av_log(avf, AV_LOG_ERROR,
268  "Invalid stream specifier '%s' for output '%s'\n",
269  subselect, slave);
270  goto end;
271  }
272  if (ret != 0) {
273  fullret = 1; // match
274  break;
275  }
276  }
277  av_freep(&tmp_select);
278 
279  if (fullret == 0) { /* no match */
280  tee_slave->stream_map[i] = -1;
281  continue;
282  }
283  }
284  tee_slave->stream_map[i] = stream_count++;
285 
286  if (!(st2 = avformat_new_stream(avf2, NULL))) {
287  ret = AVERROR(ENOMEM);
288  goto end;
289  }
290 
292  if (ret < 0)
293  goto end;
294  }
295 
296  ret = ff_format_output_open(avf2, filename, &options);
297  if (ret < 0) {
298  av_log(avf, AV_LOG_ERROR, "Slave '%s': error opening: %s\n", slave,
299  av_err2str(ret));
300  goto end;
301  }
302 
303  if ((ret = avformat_write_header(avf2, &options)) < 0) {
304  av_log(avf, AV_LOG_ERROR, "Slave '%s': error writing header: %s\n",
305  slave, av_err2str(ret));
306  goto end;
307  }
308  tee_slave->header_written = 1;
309 
310  tee_slave->bsfs = av_calloc(avf2->nb_streams, sizeof(*tee_slave->bsfs));
311  if (!tee_slave->bsfs) {
312  ret = AVERROR(ENOMEM);
313  goto end;
314  }
315 
316  entry = NULL;
317  while (entry = av_dict_get(bsf_options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
318  const char *spec = entry->key;
319  if (*spec) {
320  if (strspn(spec, slave_bsfs_spec_sep) != 1) {
321  av_log(avf, AV_LOG_ERROR,
322  "Specifier separator in '%s' is '%c', but only characters '%s' "
323  "are allowed\n", entry->key, *spec, slave_bsfs_spec_sep);
324  ret = AVERROR(EINVAL);
325  goto end;
326  }
327  spec++; /* consume separator */
328  }
329 
330  for (i = 0; i < avf2->nb_streams; i++) {
331  ret = avformat_match_stream_specifier(avf2, avf2->streams[i], spec);
332  if (ret < 0) {
333  av_log(avf, AV_LOG_ERROR,
334  "Invalid stream specifier '%s' in bsfs option '%s' for slave "
335  "output '%s'\n", spec, entry->key, filename);
336  goto end;
337  }
338 
339  if (ret > 0) {
340  av_log(avf, AV_LOG_DEBUG, "spec:%s bsfs:%s matches stream %d of slave "
341  "output '%s'\n", spec, entry->value, i, filename);
342  if (tee_slave->bsfs[i]) {
343  av_log(avf, AV_LOG_WARNING,
344  "Duplicate bsfs specification associated to stream %d of slave "
345  "output '%s', filters will be ignored\n", i, filename);
346  continue;
347  }
348  ret = av_bsf_list_parse_str(entry->value, &tee_slave->bsfs[i]);
349  if (ret < 0) {
350  av_log(avf, AV_LOG_ERROR,
351  "Error parsing bitstream filter sequence '%s' associated to "
352  "stream %d of slave output '%s'\n", entry->value, i, filename);
353  goto end;
354  }
355  }
356  }
357 
358  av_dict_set(&bsf_options, entry->key, NULL, 0);
359  }
360 
361  for (i = 0; i < avf->nb_streams; i++){
362  int target_stream = tee_slave->stream_map[i];
363  if (target_stream < 0)
364  continue;
365 
366  if (!tee_slave->bsfs[target_stream]) {
367  /* Add pass-through bitstream filter */
368  ret = av_bsf_get_null_filter(&tee_slave->bsfs[target_stream]);
369  if (ret < 0) {
370  av_log(avf, AV_LOG_ERROR,
371  "Failed to create pass-through bitstream filter: %s\n",
372  av_err2str(ret));
373  goto end;
374  }
375  }
376 
377  tee_slave->bsfs[target_stream]->time_base_in = avf->streams[i]->time_base;
378  ret = avcodec_parameters_copy(tee_slave->bsfs[target_stream]->par_in,
379  avf->streams[i]->codecpar);
380  if (ret < 0)
381  goto end;
382 
383  ret = av_bsf_init(tee_slave->bsfs[target_stream]);
384  if (ret < 0) {
385  av_log(avf, AV_LOG_ERROR,
386  "Failed to initialize bitstream filter(s): %s\n",
387  av_err2str(ret));
388  goto end;
389  }
390  }
391 
392  if (options) {
393  entry = NULL;
394  while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX)))
395  av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
397  goto end;
398  }
399 
400 end:
401  av_free(format);
402  av_free(select);
404  av_dict_free(&bsf_options);
405  av_freep(&tmp_select);
406  return ret;
407 }
408 
409 static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
410 {
411  int i;
412  av_log(log_ctx, log_level, "filename:'%s' format:%s\n",
413  slave->avf->url, slave->avf->oformat->name);
414  for (i = 0; i < slave->avf->nb_streams; i++) {
415  AVStream *st = slave->avf->streams[i];
416  AVBSFContext *bsf = slave->bsfs[i];
417  const char *bsf_name;
418 
419  av_log(log_ctx, log_level, " stream:%d codec:%s type:%s",
422 
423  bsf_name = bsf->filter->priv_class ?
424  bsf->filter->priv_class->item_name(bsf) : bsf->filter->name;
425  av_log(log_ctx, log_level, " bsfs: %s\n", bsf_name);
426  }
427 }
428 
429 static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
430 {
431  TeeContext *tee = avf->priv_data;
432  TeeSlave *tee_slave = &tee->slaves[slave_idx];
433 
434  tee->nb_alive--;
435 
436  close_slave(tee_slave);
437 
438  if (!tee->nb_alive) {
439  av_log(avf, AV_LOG_ERROR, "All tee outputs failed.\n");
440  return err_n;
441  } else if (tee_slave->on_fail == ON_SLAVE_FAILURE_ABORT) {
442  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed, aborting.\n", slave_idx);
443  return err_n;
444  } else {
445  av_log(avf, AV_LOG_ERROR, "Slave muxer #%u failed: %s, continuing with %u/%u slaves.\n",
446  slave_idx, av_err2str(err_n), tee->nb_alive, tee->nb_slaves);
447  return 0;
448  }
449 }
450 
452 {
453  TeeContext *tee = avf->priv_data;
454  unsigned nb_slaves = 0, i;
455  const char *filename = avf->url;
456  char **slaves = NULL;
457  int ret;
458 
459  while (*filename) {
460  char *slave = av_get_token(&filename, slave_delim);
461  if (!slave) {
462  ret = AVERROR(ENOMEM);
463  goto fail;
464  }
465  ret = av_dynarray_add_nofree(&slaves, &nb_slaves, slave);
466  if (ret < 0) {
467  av_free(slave);
468  goto fail;
469  }
470  if (strspn(filename, slave_delim))
471  filename++;
472  }
473 
474  if (!FF_ALLOCZ_TYPED_ARRAY(tee->slaves, nb_slaves)) {
475  ret = AVERROR(ENOMEM);
476  goto fail;
477  }
478  tee->nb_slaves = tee->nb_alive = nb_slaves;
479 
480  for (i = 0; i < nb_slaves; i++) {
481 
482  tee->slaves[i].use_fifo = tee->use_fifo;
483  ret = av_dict_copy(&tee->slaves[i].fifo_options, tee->fifo_options, 0);
484  if (ret < 0)
485  goto fail;
486 
487  if ((ret = open_slave(avf, slaves[i], &tee->slaves[i])) < 0) {
489  if (ret < 0)
490  goto fail;
491  } else {
492  log_slave(&tee->slaves[i], avf, AV_LOG_VERBOSE);
493  }
494  av_freep(&slaves[i]);
495  }
496 
497  for (i = 0; i < avf->nb_streams; i++) {
498  int j, mapped = 0;
499  for (j = 0; j < tee->nb_slaves; j++)
500  if (tee->slaves[j].avf)
501  mapped += tee->slaves[j].stream_map[i] >= 0;
502  if (!mapped)
503  av_log(avf, AV_LOG_WARNING, "Input stream #%d is not mapped "
504  "to any slave.\n", i);
505  }
506  av_free(slaves);
507  return 0;
508 
509 fail:
510  for (i = 0; i < nb_slaves; i++)
511  av_freep(&slaves[i]);
512  close_slaves(avf);
513  av_free(slaves);
514  return ret;
515 }
516 
518 {
519  TeeContext *tee = avf->priv_data;
520  int ret_all = 0, ret;
521  unsigned i;
522 
523  for (i = 0; i < tee->nb_slaves; i++) {
524  if ((ret = close_slave(&tee->slaves[i])) < 0) {
526  if (!ret_all && ret < 0)
527  ret_all = ret;
528  }
529  }
530  av_freep(&tee->slaves);
531  return ret_all;
532 }
533 
535 {
536  TeeContext *tee = avf->priv_data;
537  AVFormatContext *avf2;
538  AVBSFContext *bsfs;
539  AVPacket *const pkt2 = ffformatcontext(avf)->pkt;
540  int ret_all = 0, ret;
541  unsigned i, s;
542  int s2;
543 
544  for (i = 0; i < tee->nb_slaves; i++) {
545  if (!(avf2 = tee->slaves[i].avf))
546  continue;
547 
548  /* Flush slave if pkt is NULL*/
549  if (!pkt) {
551  if (ret < 0) {
553  if (!ret_all && ret < 0)
554  ret_all = ret;
555  }
556  continue;
557  }
558 
559  s = pkt->stream_index;
560  s2 = tee->slaves[i].stream_map[s];
561  if (s2 < 0)
562  continue;
563 
564  if ((ret = av_packet_ref(pkt2, pkt)) < 0) {
565  if (!ret_all)
566  ret_all = ret;
567  continue;
568  }
569  bsfs = tee->slaves[i].bsfs[s2];
570  pkt2->stream_index = s2;
571 
572  ret = av_bsf_send_packet(bsfs, pkt2);
573  if (ret < 0) {
574  av_packet_unref(pkt2);
575  av_log(avf, AV_LOG_ERROR, "Error while sending packet to bitstream filter: %s\n",
576  av_err2str(ret));
578  if (!ret_all && ret < 0)
579  ret_all = ret;
580  }
581 
582  while(1) {
583  ret = av_bsf_receive_packet(bsfs, pkt2);
584  if (ret == AVERROR(EAGAIN)) {
585  ret = 0;
586  break;
587  } else if (ret < 0) {
588  break;
589  }
590 
592  avf2->streams[s2]->time_base);
593  ret = av_interleaved_write_frame(avf2, pkt2);
594  if (ret < 0)
595  break;
596  };
597 
598  if (ret < 0) {
600  if (!ret_all && ret < 0)
601  ret_all = ret;
602  }
603  }
604  return ret_all;
605 }
606 
608  .name = "tee",
609  .long_name = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
610  .priv_data_size = sizeof(TeeContext),
614  .priv_class = &tee_muxer_class,
616 };
FF_ALLOCZ_TYPED_ARRAY
#define FF_ALLOCZ_TYPED_ARRAY(p, nelem)
Definition: internal.h:98
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:417
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
ffformatcontext
static av_always_inline FFFormatContext * ffformatcontext(AVFormatContext *s)
Definition: internal.h:186
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:1177
AVFormatContext::strict_std_compliance
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1406
parse_slave_fifo_options
static int parse_slave_fifo_options(const char *fifo_options, TeeSlave *tee_slave)
Definition: tee.c:113
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:517
AVDictionary
Definition: dict.c:30
tee_write_packet
static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
Definition: tee.c:534
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:1376
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
parse_slave_fifo_policy
static int parse_slave_fifo_policy(const char *use_fifo, TeeSlave *tee_slave)
Definition: tee.c:99
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:1338
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:1227
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:1614
tee_process_slave_failure
static int tee_process_slave_failure(AVFormatContext *avf, unsigned slave_idx, int err_n)
Definition: tee.c:429
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:1109
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1004
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:880
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:118
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1151
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:1165
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:1192
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:145
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:454
open_slave
static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
Definition: tee.c:156
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:1250
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
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
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:857
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:1128
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:409
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:71
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:451
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:1674
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:1668
slave_delim
static const char *const slave_delim
Definition: tee.c:62
PROCESS_OPTION
#define PROCESS_OPTION(option, field, function, on_error)
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
FFFormatContext::pkt
AVPacket * pkt
Used to hold temporary packets for the generic demuxing code.
Definition: internal.h:128
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:607
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:1235
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
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:1137