FFmpeg  4.2.1
dashdec.c
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1 /*
2  * Dynamic Adaptive Streaming over HTTP demux
3  * Copyright (c) 2017 samsamsam@o2.pl based on HLS demux
4  * Copyright (c) 2017 Steven Liu
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 #include <libxml/parser.h>
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/time.h"
26 #include "libavutil/parseutils.h"
27 #include "internal.h"
28 #include "avio_internal.h"
29 #include "dash.h"
30 
31 #define INITIAL_BUFFER_SIZE 32768
32 
33 struct fragment {
34  int64_t url_offset;
35  int64_t size;
36  char *url;
37 };
38 
39 /*
40  * reference to : ISO_IEC_23009-1-DASH-2012
41  * Section: 5.3.9.6.2
42  * Table: Table 17 — Semantics of SegmentTimeline element
43  * */
44 struct timeline {
45  /* starttime: Element or Attribute Name
46  * specifies the MPD start time, in @timescale units,
47  * the first Segment in the series starts relative to the beginning of the Period.
48  * The value of this attribute must be equal to or greater than the sum of the previous S
49  * element earliest presentation time and the sum of the contiguous Segment durations.
50  * If the value of the attribute is greater than what is expressed by the previous S element,
51  * it expresses discontinuities in the timeline.
52  * If not present then the value shall be assumed to be zero for the first S element
53  * and for the subsequent S elements, the value shall be assumed to be the sum of
54  * the previous S element's earliest presentation time and contiguous duration
55  * (i.e. previous S@starttime + @duration * (@repeat + 1)).
56  * */
57  int64_t starttime;
58  /* repeat: Element or Attribute Name
59  * specifies the repeat count of the number of following contiguous Segments with
60  * the same duration expressed by the value of @duration. This value is zero-based
61  * (e.g. a value of three means four Segments in the contiguous series).
62  * */
63  int64_t repeat;
64  /* duration: Element or Attribute Name
65  * specifies the Segment duration, in units of the value of the @timescale.
66  * */
67  int64_t duration;
68 };
69 
70 /*
71  * Each playlist has its own demuxer. If it is currently active,
72  * it has an opened AVIOContext too, and potentially an AVPacket
73  * containing the next packet from this stream.
74  */
76  char *url_template;
82  int rep_idx;
83  int rep_count;
85 
87  char id[20];
88  int bandwidth;
90  AVStream *assoc_stream; /* demuxer stream associated with this representation */
91 
93  struct fragment **fragments; /* VOD list of fragment for profile */
94 
96  struct timeline **timelines;
97 
98  int64_t first_seq_no;
99  int64_t last_seq_no;
100  int64_t start_number; /* used in case when we have dynamic list of segment to know which segments are new one*/
101 
104 
106 
107  int64_t cur_seq_no;
108  int64_t cur_seg_offset;
109  int64_t cur_seg_size;
110  struct fragment *cur_seg;
111 
112  /* Currently active Media Initialization Section */
118  int64_t cur_timestamp;
120 };
121 
122 typedef struct DASHContext {
123  const AVClass *class;
124  char *base_url;
138 
139  int n_videos;
141  int n_audios;
145 
146  /* MediaPresentationDescription Attribute */
151  uint64_t publish_time;
154  uint64_t min_buffer_time;
155 
156  /* Period Attribute */
157  uint64_t period_duration;
158  uint64_t period_start;
159 
160  int is_live;
165 
166  /* Flags for init section*/
169 
170 } DASHContext;
171 
172 static int ishttp(char *url)
173 {
174  const char *proto_name = avio_find_protocol_name(url);
175  return av_strstart(proto_name, "http", NULL);
176 }
177 
178 static int aligned(int val)
179 {
180  return ((val + 0x3F) >> 6) << 6;
181 }
182 
183 static uint64_t get_current_time_in_sec(void)
184 {
185  return av_gettime() / 1000000;
186 }
187 
188 static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char *datetime)
189 {
190  struct tm timeinfo;
191  int year = 0;
192  int month = 0;
193  int day = 0;
194  int hour = 0;
195  int minute = 0;
196  int ret = 0;
197  float second = 0.0;
198 
199  /* ISO-8601 date parser */
200  if (!datetime)
201  return 0;
202 
203  ret = sscanf(datetime, "%d-%d-%dT%d:%d:%fZ", &year, &month, &day, &hour, &minute, &second);
204  /* year, month, day, hour, minute, second 6 arguments */
205  if (ret != 6) {
206  av_log(s, AV_LOG_WARNING, "get_utc_date_time_insec get a wrong time format\n");
207  }
208  timeinfo.tm_year = year - 1900;
209  timeinfo.tm_mon = month - 1;
210  timeinfo.tm_mday = day;
211  timeinfo.tm_hour = hour;
212  timeinfo.tm_min = minute;
213  timeinfo.tm_sec = (int)second;
214 
215  return av_timegm(&timeinfo);
216 }
217 
218 static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
219 {
220  /* ISO-8601 duration parser */
221  uint32_t days = 0;
222  uint32_t hours = 0;
223  uint32_t mins = 0;
224  uint32_t secs = 0;
225  int size = 0;
226  float value = 0;
227  char type = '\0';
228  const char *ptr = duration;
229 
230  while (*ptr) {
231  if (*ptr == 'P' || *ptr == 'T') {
232  ptr++;
233  continue;
234  }
235 
236  if (sscanf(ptr, "%f%c%n", &value, &type, &size) != 2) {
237  av_log(s, AV_LOG_WARNING, "get_duration_insec get a wrong time format\n");
238  return 0; /* parser error */
239  }
240  switch (type) {
241  case 'D':
242  days = (uint32_t)value;
243  break;
244  case 'H':
245  hours = (uint32_t)value;
246  break;
247  case 'M':
248  mins = (uint32_t)value;
249  break;
250  case 'S':
251  secs = (uint32_t)value;
252  break;
253  default:
254  // handle invalid type
255  break;
256  }
257  ptr += size;
258  }
259  return ((days * 24 + hours) * 60 + mins) * 60 + secs;
260 }
261 
262 static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
263 {
264  int64_t start_time = 0;
265  int64_t i = 0;
266  int64_t j = 0;
267  int64_t num = 0;
268 
269  if (pls->n_timelines) {
270  for (i = 0; i < pls->n_timelines; i++) {
271  if (pls->timelines[i]->starttime > 0) {
272  start_time = pls->timelines[i]->starttime;
273  }
274  if (num == cur_seq_no)
275  goto finish;
276 
277  start_time += pls->timelines[i]->duration;
278 
279  if (pls->timelines[i]->repeat == -1) {
280  start_time = pls->timelines[i]->duration * cur_seq_no;
281  goto finish;
282  }
283 
284  for (j = 0; j < pls->timelines[i]->repeat; j++) {
285  num++;
286  if (num == cur_seq_no)
287  goto finish;
288  start_time += pls->timelines[i]->duration;
289  }
290  num++;
291  }
292  }
293 finish:
294  return start_time;
295 }
296 
297 static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
298 {
299  int64_t i = 0;
300  int64_t j = 0;
301  int64_t num = 0;
302  int64_t start_time = 0;
303 
304  for (i = 0; i < pls->n_timelines; i++) {
305  if (pls->timelines[i]->starttime > 0) {
306  start_time = pls->timelines[i]->starttime;
307  }
308  if (start_time > cur_time)
309  goto finish;
310 
311  start_time += pls->timelines[i]->duration;
312  for (j = 0; j < pls->timelines[i]->repeat; j++) {
313  num++;
314  if (start_time > cur_time)
315  goto finish;
316  start_time += pls->timelines[i]->duration;
317  }
318  num++;
319  }
320 
321  return -1;
322 
323 finish:
324  return num;
325 }
326 
327 static void free_fragment(struct fragment **seg)
328 {
329  if (!(*seg)) {
330  return;
331  }
332  av_freep(&(*seg)->url);
333  av_freep(seg);
334 }
335 
336 static void free_fragment_list(struct representation *pls)
337 {
338  int i;
339 
340  for (i = 0; i < pls->n_fragments; i++) {
341  free_fragment(&pls->fragments[i]);
342  }
343  av_freep(&pls->fragments);
344  pls->n_fragments = 0;
345 }
346 
347 static void free_timelines_list(struct representation *pls)
348 {
349  int i;
350 
351  for (i = 0; i < pls->n_timelines; i++) {
352  av_freep(&pls->timelines[i]);
353  }
354  av_freep(&pls->timelines);
355  pls->n_timelines = 0;
356 }
357 
358 static void free_representation(struct representation *pls)
359 {
360  free_fragment_list(pls);
361  free_timelines_list(pls);
362  free_fragment(&pls->cur_seg);
364  av_freep(&pls->init_sec_buf);
365  av_freep(&pls->pb.buffer);
366  if (pls->input)
367  ff_format_io_close(pls->parent, &pls->input);
368  if (pls->ctx) {
369  pls->ctx->pb = NULL;
370  avformat_close_input(&pls->ctx);
371  }
372 
373  av_freep(&pls->url_template);
374  av_freep(&pls);
375 }
376 
378 {
379  int i;
380  for (i = 0; i < c->n_videos; i++) {
381  struct representation *pls = c->videos[i];
382  free_representation(pls);
383  }
384  av_freep(&c->videos);
385  c->n_videos = 0;
386 }
387 
389 {
390  int i;
391  for (i = 0; i < c->n_audios; i++) {
392  struct representation *pls = c->audios[i];
393  free_representation(pls);
394  }
395  av_freep(&c->audios);
396  c->n_audios = 0;
397 }
398 
400 {
401  int i;
402  for (i = 0; i < c->n_subtitles; i++) {
403  struct representation *pls = c->subtitles[i];
404  free_representation(pls);
405  }
406  av_freep(&c->subtitles);
407  c->n_subtitles = 0;
408 }
409 
410 static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
411  AVDictionary *opts, AVDictionary *opts2, int *is_http)
412 {
413  DASHContext *c = s->priv_data;
414  AVDictionary *tmp = NULL;
415  const char *proto_name = NULL;
416  int ret;
417 
418  av_dict_copy(&tmp, opts, 0);
419  av_dict_copy(&tmp, opts2, 0);
420 
421  if (av_strstart(url, "crypto", NULL)) {
422  if (url[6] == '+' || url[6] == ':')
423  proto_name = avio_find_protocol_name(url + 7);
424  }
425 
426  if (!proto_name)
427  proto_name = avio_find_protocol_name(url);
428 
429  if (!proto_name)
430  return AVERROR_INVALIDDATA;
431 
432  // only http(s) & file are allowed
433  if (av_strstart(proto_name, "file", NULL)) {
434  if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
435  av_log(s, AV_LOG_ERROR,
436  "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
437  "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
438  url);
439  return AVERROR_INVALIDDATA;
440  }
441  } else if (av_strstart(proto_name, "http", NULL)) {
442  ;
443  } else
444  return AVERROR_INVALIDDATA;
445 
446  if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
447  ;
448  else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
449  ;
450  else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
451  return AVERROR_INVALIDDATA;
452 
453  av_freep(pb);
454  ret = avio_open2(pb, url, AVIO_FLAG_READ, c->interrupt_callback, &tmp);
455  if (ret >= 0) {
456  // update cookies on http response with setcookies.
457  char *new_cookies = NULL;
458 
459  if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
460  av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
461 
462  if (new_cookies) {
463  av_dict_set(&opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
464  }
465 
466  }
467 
468  av_dict_free(&tmp);
469 
470  if (is_http)
471  *is_http = av_strstart(proto_name, "http", NULL);
472 
473  return ret;
474 }
475 
476 static char *get_content_url(xmlNodePtr *baseurl_nodes,
477  int n_baseurl_nodes,
478  int max_url_size,
479  char *rep_id_val,
480  char *rep_bandwidth_val,
481  char *val)
482 {
483  int i;
484  char *text;
485  char *url = NULL;
486  char *tmp_str = av_mallocz(max_url_size);
487  char *tmp_str_2 = av_mallocz(max_url_size);
488 
489  if (!tmp_str || !tmp_str_2) {
490  return NULL;
491  }
492 
493  for (i = 0; i < n_baseurl_nodes; ++i) {
494  if (baseurl_nodes[i] &&
495  baseurl_nodes[i]->children &&
496  baseurl_nodes[i]->children->type == XML_TEXT_NODE) {
497  text = xmlNodeGetContent(baseurl_nodes[i]->children);
498  if (text) {
499  memset(tmp_str, 0, max_url_size);
500  memset(tmp_str_2, 0, max_url_size);
501  ff_make_absolute_url(tmp_str_2, max_url_size, tmp_str, text);
502  av_strlcpy(tmp_str, tmp_str_2, max_url_size);
503  xmlFree(text);
504  }
505  }
506  }
507 
508  if (val)
509  ff_make_absolute_url(tmp_str, max_url_size, tmp_str, val);
510 
511  if (rep_id_val) {
512  url = av_strireplace(tmp_str, "$RepresentationID$", (const char*)rep_id_val);
513  if (!url) {
514  goto end;
515  }
516  av_strlcpy(tmp_str, url, max_url_size);
517  }
518  if (rep_bandwidth_val && tmp_str[0] != '\0') {
519  // free any previously assigned url before reassigning
520  av_free(url);
521  url = av_strireplace(tmp_str, "$Bandwidth$", (const char*)rep_bandwidth_val);
522  if (!url) {
523  goto end;
524  }
525  }
526 end:
527  av_free(tmp_str);
528  av_free(tmp_str_2);
529  return url;
530 }
531 
532 static char *get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
533 {
534  int i;
535  char *val;
536 
537  for (i = 0; i < n_nodes; ++i) {
538  if (nodes[i]) {
539  val = xmlGetProp(nodes[i], attrname);
540  if (val)
541  return val;
542  }
543  }
544 
545  return NULL;
546 }
547 
548 static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char *nodename)
549 {
550  xmlNodePtr node = rootnode;
551  if (!node) {
552  return NULL;
553  }
554 
555  node = xmlFirstElementChild(node);
556  while (node) {
557  if (!av_strcasecmp(node->name, nodename)) {
558  return node;
559  }
560  node = xmlNextElementSibling(node);
561  }
562  return NULL;
563 }
564 
565 static enum AVMediaType get_content_type(xmlNodePtr node)
566 {
568  int i = 0;
569  const char *attr;
570  char *val = NULL;
571 
572  if (node) {
573  for (i = 0; i < 2; i++) {
574  attr = i ? "mimeType" : "contentType";
575  val = xmlGetProp(node, attr);
576  if (val) {
577  if (av_stristr((const char *)val, "video")) {
578  type = AVMEDIA_TYPE_VIDEO;
579  } else if (av_stristr((const char *)val, "audio")) {
580  type = AVMEDIA_TYPE_AUDIO;
581  } else if (av_stristr((const char *)val, "text")) {
582  type = AVMEDIA_TYPE_SUBTITLE;
583  }
584  xmlFree(val);
585  }
586  }
587  }
588  return type;
589 }
590 
591 static struct fragment * get_Fragment(char *range)
592 {
593  struct fragment * seg = av_mallocz(sizeof(struct fragment));
594 
595  if (!seg)
596  return NULL;
597 
598  seg->size = -1;
599  if (range) {
600  char *str_end_offset;
601  char *str_offset = av_strtok(range, "-", &str_end_offset);
602  seg->url_offset = strtoll(str_offset, NULL, 10);
603  seg->size = strtoll(str_end_offset, NULL, 10) - seg->url_offset;
604  }
605 
606  return seg;
607 }
608 
610  xmlNodePtr fragmenturl_node,
611  xmlNodePtr *baseurl_nodes,
612  char *rep_id_val,
613  char *rep_bandwidth_val)
614 {
615  DASHContext *c = s->priv_data;
616  char *initialization_val = NULL;
617  char *media_val = NULL;
618  char *range_val = NULL;
619  int max_url_size = c ? c->max_url_size: MAX_URL_SIZE;
620 
621  if (!av_strcasecmp(fragmenturl_node->name, (const char *)"Initialization")) {
622  initialization_val = xmlGetProp(fragmenturl_node, "sourceURL");
623  range_val = xmlGetProp(fragmenturl_node, "range");
624  if (initialization_val || range_val) {
625  rep->init_section = get_Fragment(range_val);
626  if (!rep->init_section) {
627  xmlFree(initialization_val);
628  xmlFree(range_val);
629  return AVERROR(ENOMEM);
630  }
631  rep->init_section->url = get_content_url(baseurl_nodes, 4,
632  max_url_size,
633  rep_id_val,
634  rep_bandwidth_val,
635  initialization_val);
636 
637  if (!rep->init_section->url) {
638  av_free(rep->init_section);
639  xmlFree(initialization_val);
640  xmlFree(range_val);
641  return AVERROR(ENOMEM);
642  }
643  xmlFree(initialization_val);
644  xmlFree(range_val);
645  }
646  } else if (!av_strcasecmp(fragmenturl_node->name, (const char *)"SegmentURL")) {
647  media_val = xmlGetProp(fragmenturl_node, "media");
648  range_val = xmlGetProp(fragmenturl_node, "mediaRange");
649  if (media_val || range_val) {
650  struct fragment *seg = get_Fragment(range_val);
651  if (!seg) {
652  xmlFree(media_val);
653  xmlFree(range_val);
654  return AVERROR(ENOMEM);
655  }
656  seg->url = get_content_url(baseurl_nodes, 4,
657  max_url_size,
658  rep_id_val,
659  rep_bandwidth_val,
660  media_val);
661  if (!seg->url) {
662  av_free(seg);
663  xmlFree(media_val);
664  xmlFree(range_val);
665  return AVERROR(ENOMEM);
666  }
667  dynarray_add(&rep->fragments, &rep->n_fragments, seg);
668  xmlFree(media_val);
669  xmlFree(range_val);
670  }
671  }
672 
673  return 0;
674 }
675 
677  xmlNodePtr fragment_timeline_node)
678 {
679  xmlAttrPtr attr = NULL;
680  char *val = NULL;
681 
682  if (!av_strcasecmp(fragment_timeline_node->name, (const char *)"S")) {
683  struct timeline *tml = av_mallocz(sizeof(struct timeline));
684  if (!tml) {
685  return AVERROR(ENOMEM);
686  }
687  attr = fragment_timeline_node->properties;
688  while (attr) {
689  val = xmlGetProp(fragment_timeline_node, attr->name);
690 
691  if (!val) {
692  av_log(s, AV_LOG_WARNING, "parse_manifest_segmenttimeline attr->name = %s val is NULL\n", attr->name);
693  continue;
694  }
695 
696  if (!av_strcasecmp(attr->name, (const char *)"t")) {
697  tml->starttime = (int64_t)strtoll(val, NULL, 10);
698  } else if (!av_strcasecmp(attr->name, (const char *)"r")) {
699  tml->repeat =(int64_t) strtoll(val, NULL, 10);
700  } else if (!av_strcasecmp(attr->name, (const char *)"d")) {
701  tml->duration = (int64_t)strtoll(val, NULL, 10);
702  }
703  attr = attr->next;
704  xmlFree(val);
705  }
706  dynarray_add(&rep->timelines, &rep->n_timelines, tml);
707  }
708 
709  return 0;
710 }
711 
712 static int resolve_content_path(AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes)
713 {
714  char *tmp_str = NULL;
715  char *path = NULL;
716  char *mpdName = NULL;
717  xmlNodePtr node = NULL;
718  char *baseurl = NULL;
719  char *root_url = NULL;
720  char *text = NULL;
721  char *tmp = NULL;
722  int isRootHttp = 0;
723  char token ='/';
724  int start = 0;
725  int rootId = 0;
726  int updated = 0;
727  int size = 0;
728  int i;
729  int tmp_max_url_size = strlen(url);
730 
731  for (i = n_baseurl_nodes-1; i >= 0 ; i--) {
732  text = xmlNodeGetContent(baseurl_nodes[i]);
733  if (!text)
734  continue;
735  tmp_max_url_size += strlen(text);
736  if (ishttp(text)) {
737  xmlFree(text);
738  break;
739  }
740  xmlFree(text);
741  }
742 
743  tmp_max_url_size = aligned(tmp_max_url_size);
744  text = av_mallocz(tmp_max_url_size);
745  if (!text) {
746  updated = AVERROR(ENOMEM);
747  goto end;
748  }
749  av_strlcpy(text, url, strlen(url)+1);
750  tmp = text;
751  while (mpdName = av_strtok(tmp, "/", &tmp)) {
752  size = strlen(mpdName);
753  }
754  av_free(text);
755 
756  path = av_mallocz(tmp_max_url_size);
757  tmp_str = av_mallocz(tmp_max_url_size);
758  if (!tmp_str || !path) {
759  updated = AVERROR(ENOMEM);
760  goto end;
761  }
762 
763  av_strlcpy (path, url, strlen(url) - size + 1);
764  for (rootId = n_baseurl_nodes - 1; rootId > 0; rootId --) {
765  if (!(node = baseurl_nodes[rootId])) {
766  continue;
767  }
768  text = xmlNodeGetContent(node);
769  if (ishttp(text)) {
770  xmlFree(text);
771  break;
772  }
773  xmlFree(text);
774  }
775 
776  node = baseurl_nodes[rootId];
777  baseurl = xmlNodeGetContent(node);
778  root_url = (av_strcasecmp(baseurl, "")) ? baseurl : path;
779  if (node) {
780  xmlNodeSetContent(node, root_url);
781  updated = 1;
782  }
783 
784  size = strlen(root_url);
785  isRootHttp = ishttp(root_url);
786 
787  if (root_url[size - 1] != token) {
788  av_strlcat(root_url, "/", size + 2);
789  size += 2;
790  }
791 
792  for (i = 0; i < n_baseurl_nodes; ++i) {
793  if (i == rootId) {
794  continue;
795  }
796  text = xmlNodeGetContent(baseurl_nodes[i]);
797  if (text) {
798  memset(tmp_str, 0, strlen(tmp_str));
799  if (!ishttp(text) && isRootHttp) {
800  av_strlcpy(tmp_str, root_url, size + 1);
801  }
802  start = (text[0] == token);
803  av_strlcat(tmp_str, text + start, tmp_max_url_size);
804  xmlNodeSetContent(baseurl_nodes[i], tmp_str);
805  updated = 1;
806  xmlFree(text);
807  }
808  }
809 
810 end:
811  if (tmp_max_url_size > *max_url_size) {
812  *max_url_size = tmp_max_url_size;
813  }
814  av_free(path);
815  av_free(tmp_str);
816  xmlFree(baseurl);
817  return updated;
818 
819 }
820 
822  xmlNodePtr node,
823  xmlNodePtr adaptionset_node,
824  xmlNodePtr mpd_baseurl_node,
825  xmlNodePtr period_baseurl_node,
826  xmlNodePtr period_segmenttemplate_node,
827  xmlNodePtr period_segmentlist_node,
828  xmlNodePtr fragment_template_node,
829  xmlNodePtr content_component_node,
830  xmlNodePtr adaptionset_baseurl_node,
831  xmlNodePtr adaptionset_segmentlist_node,
832  xmlNodePtr adaptionset_supplementalproperty_node)
833 {
834  int32_t ret = 0;
835  int32_t subtitle_rep_idx = 0;
836  int32_t audio_rep_idx = 0;
837  int32_t video_rep_idx = 0;
838  DASHContext *c = s->priv_data;
839  struct representation *rep = NULL;
840  struct fragment *seg = NULL;
841  xmlNodePtr representation_segmenttemplate_node = NULL;
842  xmlNodePtr representation_baseurl_node = NULL;
843  xmlNodePtr representation_segmentlist_node = NULL;
844  xmlNodePtr segmentlists_tab[3];
845  xmlNodePtr fragment_timeline_node = NULL;
846  xmlNodePtr fragment_templates_tab[5];
847  char *duration_val = NULL;
848  char *presentation_timeoffset_val = NULL;
849  char *startnumber_val = NULL;
850  char *timescale_val = NULL;
851  char *initialization_val = NULL;
852  char *media_val = NULL;
853  char *val = NULL;
854  xmlNodePtr baseurl_nodes[4];
855  xmlNodePtr representation_node = node;
856  char *rep_id_val = xmlGetProp(representation_node, "id");
857  char *rep_bandwidth_val = xmlGetProp(representation_node, "bandwidth");
858  char *rep_framerate_val = xmlGetProp(representation_node, "frameRate");
860 
861  // try get information from representation
862  if (type == AVMEDIA_TYPE_UNKNOWN)
863  type = get_content_type(representation_node);
864  // try get information from contentComponen
865  if (type == AVMEDIA_TYPE_UNKNOWN)
866  type = get_content_type(content_component_node);
867  // try get information from adaption set
868  if (type == AVMEDIA_TYPE_UNKNOWN)
869  type = get_content_type(adaptionset_node);
870  if (type == AVMEDIA_TYPE_UNKNOWN) {
871  av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported representation type\n", url);
872  } else if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO || type == AVMEDIA_TYPE_SUBTITLE) {
873  // convert selected representation to our internal struct
874  rep = av_mallocz(sizeof(struct representation));
875  if (!rep) {
876  ret = AVERROR(ENOMEM);
877  goto end;
878  }
879  representation_segmenttemplate_node = find_child_node_by_name(representation_node, "SegmentTemplate");
880  representation_baseurl_node = find_child_node_by_name(representation_node, "BaseURL");
881  representation_segmentlist_node = find_child_node_by_name(representation_node, "SegmentList");
882 
883  baseurl_nodes[0] = mpd_baseurl_node;
884  baseurl_nodes[1] = period_baseurl_node;
885  baseurl_nodes[2] = adaptionset_baseurl_node;
886  baseurl_nodes[3] = representation_baseurl_node;
887 
888  ret = resolve_content_path(s, url, &c->max_url_size, baseurl_nodes, 4);
890  + (rep_id_val ? strlen(rep_id_val) : 0)
891  + (rep_bandwidth_val ? strlen(rep_bandwidth_val) : 0));
892  if (ret == AVERROR(ENOMEM) || ret == 0) {
893  goto end;
894  }
895  if (representation_segmenttemplate_node || fragment_template_node || period_segmenttemplate_node) {
896  fragment_timeline_node = NULL;
897  fragment_templates_tab[0] = representation_segmenttemplate_node;
898  fragment_templates_tab[1] = adaptionset_segmentlist_node;
899  fragment_templates_tab[2] = fragment_template_node;
900  fragment_templates_tab[3] = period_segmenttemplate_node;
901  fragment_templates_tab[4] = period_segmentlist_node;
902 
903  presentation_timeoffset_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "presentationTimeOffset");
904  duration_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "duration");
905  startnumber_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "startNumber");
906  timescale_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "timescale");
907  initialization_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "initialization");
908  media_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "media");
909 
910  if (initialization_val) {
911  rep->init_section = av_mallocz(sizeof(struct fragment));
912  if (!rep->init_section) {
913  av_free(rep);
914  ret = AVERROR(ENOMEM);
915  goto end;
916  }
917  c->max_url_size = aligned(c->max_url_size + strlen(initialization_val));
918  rep->init_section->url = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, initialization_val);
919  if (!rep->init_section->url) {
920  av_free(rep->init_section);
921  av_free(rep);
922  ret = AVERROR(ENOMEM);
923  goto end;
924  }
925  rep->init_section->size = -1;
926  xmlFree(initialization_val);
927  }
928 
929  if (media_val) {
930  c->max_url_size = aligned(c->max_url_size + strlen(media_val));
931  rep->url_template = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, media_val);
932  xmlFree(media_val);
933  }
934 
935  if (presentation_timeoffset_val) {
936  rep->presentation_timeoffset = (int64_t) strtoll(presentation_timeoffset_val, NULL, 10);
937  av_log(s, AV_LOG_TRACE, "rep->presentation_timeoffset = [%"PRId64"]\n", rep->presentation_timeoffset);
938  xmlFree(presentation_timeoffset_val);
939  }
940  if (duration_val) {
941  rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
942  av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
943  xmlFree(duration_val);
944  }
945  if (timescale_val) {
946  rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
947  av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
948  xmlFree(timescale_val);
949  }
950  if (startnumber_val) {
951  rep->first_seq_no = (int64_t) strtoll(startnumber_val, NULL, 10);
952  av_log(s, AV_LOG_TRACE, "rep->first_seq_no = [%"PRId64"]\n", rep->first_seq_no);
953  xmlFree(startnumber_val);
954  }
955  if (adaptionset_supplementalproperty_node) {
956  if (!av_strcasecmp(xmlGetProp(adaptionset_supplementalproperty_node,"schemeIdUri"), "http://dashif.org/guidelines/last-segment-number")) {
957  val = xmlGetProp(adaptionset_supplementalproperty_node,"value");
958  if (!val) {
959  av_log(s, AV_LOG_ERROR, "Missing value attribute in adaptionset_supplementalproperty_node\n");
960  } else {
961  rep->last_seq_no =(int64_t) strtoll(val, NULL, 10) - 1;
962  xmlFree(val);
963  }
964  }
965  }
966 
967  fragment_timeline_node = find_child_node_by_name(representation_segmenttemplate_node, "SegmentTimeline");
968 
969  if (!fragment_timeline_node)
970  fragment_timeline_node = find_child_node_by_name(fragment_template_node, "SegmentTimeline");
971  if (!fragment_timeline_node)
972  fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
973  if (!fragment_timeline_node)
974  fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
975  if (fragment_timeline_node) {
976  fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
977  while (fragment_timeline_node) {
978  ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
979  if (ret < 0) {
980  return ret;
981  }
982  fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
983  }
984  }
985  } else if (representation_baseurl_node && !representation_segmentlist_node) {
986  seg = av_mallocz(sizeof(struct fragment));
987  if (!seg) {
988  ret = AVERROR(ENOMEM);
989  goto end;
990  }
991  seg->url = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, NULL);
992  if (!seg->url) {
993  av_free(seg);
994  ret = AVERROR(ENOMEM);
995  goto end;
996  }
997  seg->size = -1;
998  dynarray_add(&rep->fragments, &rep->n_fragments, seg);
999  } else if (representation_segmentlist_node) {
1000  // TODO: https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html
1001  // http://www-itec.uni-klu.ac.at/dash/ddash/mpdGenerator.php?fragmentlength=15&type=full
1002  xmlNodePtr fragmenturl_node = NULL;
1003  segmentlists_tab[0] = representation_segmentlist_node;
1004  segmentlists_tab[1] = adaptionset_segmentlist_node;
1005  segmentlists_tab[2] = period_segmentlist_node;
1006 
1007  duration_val = get_val_from_nodes_tab(segmentlists_tab, 3, "duration");
1008  timescale_val = get_val_from_nodes_tab(segmentlists_tab, 3, "timescale");
1009  if (duration_val) {
1010  rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
1011  av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
1012  xmlFree(duration_val);
1013  }
1014  if (timescale_val) {
1015  rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
1016  av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
1017  xmlFree(timescale_val);
1018  }
1019  fragmenturl_node = xmlFirstElementChild(representation_segmentlist_node);
1020  while (fragmenturl_node) {
1021  ret = parse_manifest_segmenturlnode(s, rep, fragmenturl_node,
1022  baseurl_nodes,
1023  rep_id_val,
1024  rep_bandwidth_val);
1025  if (ret < 0) {
1026  return ret;
1027  }
1028  fragmenturl_node = xmlNextElementSibling(fragmenturl_node);
1029  }
1030 
1031  fragment_timeline_node = find_child_node_by_name(representation_segmenttemplate_node, "SegmentTimeline");
1032 
1033  if (!fragment_timeline_node)
1034  fragment_timeline_node = find_child_node_by_name(fragment_template_node, "SegmentTimeline");
1035  if (!fragment_timeline_node)
1036  fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
1037  if (!fragment_timeline_node)
1038  fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
1039  if (fragment_timeline_node) {
1040  fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
1041  while (fragment_timeline_node) {
1042  ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
1043  if (ret < 0) {
1044  return ret;
1045  }
1046  fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
1047  }
1048  }
1049  } else {
1050  free_representation(rep);
1051  rep = NULL;
1052  av_log(s, AV_LOG_ERROR, "Unknown format of Representation node id[%s] \n", (const char *)rep_id_val);
1053  }
1054 
1055  if (rep) {
1056  if (rep->fragment_duration > 0 && !rep->fragment_timescale)
1057  rep->fragment_timescale = 1;
1058  rep->bandwidth = rep_bandwidth_val ? atoi(rep_bandwidth_val) : 0;
1059  strncpy(rep->id, rep_id_val ? rep_id_val : "", sizeof(rep->id));
1060  rep->framerate = av_make_q(0, 0);
1061  if (type == AVMEDIA_TYPE_VIDEO && rep_framerate_val) {
1062  ret = av_parse_video_rate(&rep->framerate, rep_framerate_val);
1063  if (ret < 0)
1064  av_log(s, AV_LOG_VERBOSE, "Ignoring invalid frame rate '%s'\n", rep_framerate_val);
1065  }
1066 
1067  switch (type) {
1068  case AVMEDIA_TYPE_VIDEO:
1069  rep->rep_idx = video_rep_idx;
1070  dynarray_add(&c->videos, &c->n_videos, rep);
1071  break;
1072  case AVMEDIA_TYPE_AUDIO:
1073  rep->rep_idx = audio_rep_idx;
1074  dynarray_add(&c->audios, &c->n_audios, rep);
1075  break;
1076  case AVMEDIA_TYPE_SUBTITLE:
1077  rep->rep_idx = subtitle_rep_idx;
1078  dynarray_add(&c->subtitles, &c->n_subtitles, rep);
1079  break;
1080  default:
1081  av_log(s, AV_LOG_WARNING, "Unsupported the stream type %d\n", type);
1082  break;
1083  }
1084  }
1085  }
1086 
1087  video_rep_idx += type == AVMEDIA_TYPE_VIDEO;
1088  audio_rep_idx += type == AVMEDIA_TYPE_AUDIO;
1089  subtitle_rep_idx += type == AVMEDIA_TYPE_SUBTITLE;
1090 
1091 end:
1092  if (rep_id_val)
1093  xmlFree(rep_id_val);
1094  if (rep_bandwidth_val)
1095  xmlFree(rep_bandwidth_val);
1096  if (rep_framerate_val)
1097  xmlFree(rep_framerate_val);
1098 
1099  return ret;
1100 }
1101 
1103  xmlNodePtr adaptionset_node,
1104  xmlNodePtr mpd_baseurl_node,
1105  xmlNodePtr period_baseurl_node,
1106  xmlNodePtr period_segmenttemplate_node,
1107  xmlNodePtr period_segmentlist_node)
1108 {
1109  int ret = 0;
1110  DASHContext *c = s->priv_data;
1111  xmlNodePtr fragment_template_node = NULL;
1112  xmlNodePtr content_component_node = NULL;
1113  xmlNodePtr adaptionset_baseurl_node = NULL;
1114  xmlNodePtr adaptionset_segmentlist_node = NULL;
1115  xmlNodePtr adaptionset_supplementalproperty_node = NULL;
1116  xmlNodePtr node = NULL;
1117  c->adaptionset_contenttype_val = xmlGetProp(adaptionset_node, "contentType");
1118  c->adaptionset_par_val = xmlGetProp(adaptionset_node, "par");
1119  c->adaptionset_lang_val = xmlGetProp(adaptionset_node, "lang");
1120  c->adaptionset_minbw_val = xmlGetProp(adaptionset_node, "minBandwidth");
1121  c->adaptionset_maxbw_val = xmlGetProp(adaptionset_node, "maxBandwidth");
1122  c->adaptionset_minwidth_val = xmlGetProp(adaptionset_node, "minWidth");
1123  c->adaptionset_maxwidth_val = xmlGetProp(adaptionset_node, "maxWidth");
1124  c->adaptionset_minheight_val = xmlGetProp(adaptionset_node, "minHeight");
1125  c->adaptionset_maxheight_val = xmlGetProp(adaptionset_node, "maxHeight");
1126  c->adaptionset_minframerate_val = xmlGetProp(adaptionset_node, "minFrameRate");
1127  c->adaptionset_maxframerate_val = xmlGetProp(adaptionset_node, "maxFrameRate");
1128  c->adaptionset_segmentalignment_val = xmlGetProp(adaptionset_node, "segmentAlignment");
1129  c->adaptionset_bitstreamswitching_val = xmlGetProp(adaptionset_node, "bitstreamSwitching");
1130 
1131  node = xmlFirstElementChild(adaptionset_node);
1132  while (node) {
1133  if (!av_strcasecmp(node->name, (const char *)"SegmentTemplate")) {
1134  fragment_template_node = node;
1135  } else if (!av_strcasecmp(node->name, (const char *)"ContentComponent")) {
1136  content_component_node = node;
1137  } else if (!av_strcasecmp(node->name, (const char *)"BaseURL")) {
1138  adaptionset_baseurl_node = node;
1139  } else if (!av_strcasecmp(node->name, (const char *)"SegmentList")) {
1140  adaptionset_segmentlist_node = node;
1141  } else if (!av_strcasecmp(node->name, (const char *)"SupplementalProperty")) {
1142  adaptionset_supplementalproperty_node = node;
1143  } else if (!av_strcasecmp(node->name, (const char *)"Representation")) {
1144  ret = parse_manifest_representation(s, url, node,
1145  adaptionset_node,
1146  mpd_baseurl_node,
1147  period_baseurl_node,
1148  period_segmenttemplate_node,
1149  period_segmentlist_node,
1150  fragment_template_node,
1151  content_component_node,
1152  adaptionset_baseurl_node,
1153  adaptionset_segmentlist_node,
1154  adaptionset_supplementalproperty_node);
1155  if (ret < 0) {
1156  return ret;
1157  }
1158  }
1159  node = xmlNextElementSibling(node);
1160  }
1161  return 0;
1162 }
1163 
1164 static int parse_programinformation(AVFormatContext *s, xmlNodePtr node)
1165 {
1166  xmlChar *val = NULL;
1167 
1168  node = xmlFirstElementChild(node);
1169  while (node) {
1170  if (!av_strcasecmp(node->name, "Title")) {
1171  val = xmlNodeGetContent(node);
1172  if (val) {
1173  av_dict_set(&s->metadata, "Title", val, 0);
1174  }
1175  } else if (!av_strcasecmp(node->name, "Source")) {
1176  val = xmlNodeGetContent(node);
1177  if (val) {
1178  av_dict_set(&s->metadata, "Source", val, 0);
1179  }
1180  } else if (!av_strcasecmp(node->name, "Copyright")) {
1181  val = xmlNodeGetContent(node);
1182  if (val) {
1183  av_dict_set(&s->metadata, "Copyright", val, 0);
1184  }
1185  }
1186  node = xmlNextElementSibling(node);
1187  xmlFree(val);
1188  }
1189  return 0;
1190 }
1191 
1192 static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
1193 {
1194  DASHContext *c = s->priv_data;
1195  int ret = 0;
1196  int close_in = 0;
1197  uint8_t *new_url = NULL;
1198  int64_t filesize = 0;
1199  char *buffer = NULL;
1200  AVDictionary *opts = NULL;
1201  xmlDoc *doc = NULL;
1202  xmlNodePtr root_element = NULL;
1203  xmlNodePtr node = NULL;
1204  xmlNodePtr period_node = NULL;
1205  xmlNodePtr tmp_node = NULL;
1206  xmlNodePtr mpd_baseurl_node = NULL;
1207  xmlNodePtr period_baseurl_node = NULL;
1208  xmlNodePtr period_segmenttemplate_node = NULL;
1209  xmlNodePtr period_segmentlist_node = NULL;
1210  xmlNodePtr adaptionset_node = NULL;
1211  xmlAttrPtr attr = NULL;
1212  char *val = NULL;
1213  uint32_t period_duration_sec = 0;
1214  uint32_t period_start_sec = 0;
1215 
1216  if (!in) {
1217  close_in = 1;
1218 
1219  av_dict_copy(&opts, c->avio_opts, 0);
1220  ret = avio_open2(&in, url, AVIO_FLAG_READ, c->interrupt_callback, &opts);
1221  av_dict_free(&opts);
1222  if (ret < 0)
1223  return ret;
1224  }
1225 
1226  if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0) {
1227  c->base_url = av_strdup(new_url);
1228  } else {
1229  c->base_url = av_strdup(url);
1230  }
1231 
1232  filesize = avio_size(in);
1233  if (filesize <= 0) {
1234  filesize = 8 * 1024;
1235  }
1236 
1237  buffer = av_mallocz(filesize);
1238  if (!buffer) {
1239  av_free(c->base_url);
1240  return AVERROR(ENOMEM);
1241  }
1242 
1243  filesize = avio_read(in, buffer, filesize);
1244  if (filesize <= 0) {
1245  av_log(s, AV_LOG_ERROR, "Unable to read to offset '%s'\n", url);
1246  ret = AVERROR_INVALIDDATA;
1247  } else {
1248  LIBXML_TEST_VERSION
1249 
1250  doc = xmlReadMemory(buffer, filesize, c->base_url, NULL, 0);
1251  root_element = xmlDocGetRootElement(doc);
1252  node = root_element;
1253 
1254  if (!node) {
1255  ret = AVERROR_INVALIDDATA;
1256  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing root node\n", url);
1257  goto cleanup;
1258  }
1259 
1260  if (node->type != XML_ELEMENT_NODE ||
1261  av_strcasecmp(node->name, (const char *)"MPD")) {
1262  ret = AVERROR_INVALIDDATA;
1263  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - wrong root node name[%s] type[%d]\n", url, node->name, (int)node->type);
1264  goto cleanup;
1265  }
1266 
1267  val = xmlGetProp(node, "type");
1268  if (!val) {
1269  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing type attrib\n", url);
1270  ret = AVERROR_INVALIDDATA;
1271  goto cleanup;
1272  }
1273  if (!av_strcasecmp(val, (const char *)"dynamic"))
1274  c->is_live = 1;
1275  xmlFree(val);
1276 
1277  attr = node->properties;
1278  while (attr) {
1279  val = xmlGetProp(node, attr->name);
1280 
1281  if (!av_strcasecmp(attr->name, (const char *)"availabilityStartTime")) {
1282  c->availability_start_time = get_utc_date_time_insec(s, (const char *)val);
1283  av_log(s, AV_LOG_TRACE, "c->availability_start_time = [%"PRId64"]\n", c->availability_start_time);
1284  } else if (!av_strcasecmp(attr->name, (const char *)"availabilityEndTime")) {
1285  c->availability_end_time = get_utc_date_time_insec(s, (const char *)val);
1286  av_log(s, AV_LOG_TRACE, "c->availability_end_time = [%"PRId64"]\n", c->availability_end_time);
1287  } else if (!av_strcasecmp(attr->name, (const char *)"publishTime")) {
1288  c->publish_time = get_utc_date_time_insec(s, (const char *)val);
1289  av_log(s, AV_LOG_TRACE, "c->publish_time = [%"PRId64"]\n", c->publish_time);
1290  } else if (!av_strcasecmp(attr->name, (const char *)"minimumUpdatePeriod")) {
1291  c->minimum_update_period = get_duration_insec(s, (const char *)val);
1292  av_log(s, AV_LOG_TRACE, "c->minimum_update_period = [%"PRId64"]\n", c->minimum_update_period);
1293  } else if (!av_strcasecmp(attr->name, (const char *)"timeShiftBufferDepth")) {
1294  c->time_shift_buffer_depth = get_duration_insec(s, (const char *)val);
1295  av_log(s, AV_LOG_TRACE, "c->time_shift_buffer_depth = [%"PRId64"]\n", c->time_shift_buffer_depth);
1296  } else if (!av_strcasecmp(attr->name, (const char *)"minBufferTime")) {
1297  c->min_buffer_time = get_duration_insec(s, (const char *)val);
1298  av_log(s, AV_LOG_TRACE, "c->min_buffer_time = [%"PRId64"]\n", c->min_buffer_time);
1299  } else if (!av_strcasecmp(attr->name, (const char *)"suggestedPresentationDelay")) {
1300  c->suggested_presentation_delay = get_duration_insec(s, (const char *)val);
1301  av_log(s, AV_LOG_TRACE, "c->suggested_presentation_delay = [%"PRId64"]\n", c->suggested_presentation_delay);
1302  } else if (!av_strcasecmp(attr->name, (const char *)"mediaPresentationDuration")) {
1303  c->media_presentation_duration = get_duration_insec(s, (const char *)val);
1304  av_log(s, AV_LOG_TRACE, "c->media_presentation_duration = [%"PRId64"]\n", c->media_presentation_duration);
1305  }
1306  attr = attr->next;
1307  xmlFree(val);
1308  }
1309 
1310  tmp_node = find_child_node_by_name(node, "BaseURL");
1311  if (tmp_node) {
1312  mpd_baseurl_node = xmlCopyNode(tmp_node,1);
1313  } else {
1314  mpd_baseurl_node = xmlNewNode(NULL, "BaseURL");
1315  }
1316 
1317  // at now we can handle only one period, with the longest duration
1318  node = xmlFirstElementChild(node);
1319  while (node) {
1320  if (!av_strcasecmp(node->name, (const char *)"Period")) {
1321  period_duration_sec = 0;
1322  period_start_sec = 0;
1323  attr = node->properties;
1324  while (attr) {
1325  val = xmlGetProp(node, attr->name);
1326  if (!av_strcasecmp(attr->name, (const char *)"duration")) {
1327  period_duration_sec = get_duration_insec(s, (const char *)val);
1328  } else if (!av_strcasecmp(attr->name, (const char *)"start")) {
1329  period_start_sec = get_duration_insec(s, (const char *)val);
1330  }
1331  attr = attr->next;
1332  xmlFree(val);
1333  }
1334  if ((period_duration_sec) >= (c->period_duration)) {
1335  period_node = node;
1336  c->period_duration = period_duration_sec;
1337  c->period_start = period_start_sec;
1338  if (c->period_start > 0)
1340  }
1341  } else if (!av_strcasecmp(node->name, "ProgramInformation")) {
1342  parse_programinformation(s, node);
1343  }
1344  node = xmlNextElementSibling(node);
1345  }
1346  if (!period_node) {
1347  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing Period node\n", url);
1348  ret = AVERROR_INVALIDDATA;
1349  goto cleanup;
1350  }
1351 
1352  adaptionset_node = xmlFirstElementChild(period_node);
1353  while (adaptionset_node) {
1354  if (!av_strcasecmp(adaptionset_node->name, (const char *)"BaseURL")) {
1355  period_baseurl_node = adaptionset_node;
1356  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentTemplate")) {
1357  period_segmenttemplate_node = adaptionset_node;
1358  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentList")) {
1359  period_segmentlist_node = adaptionset_node;
1360  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"AdaptationSet")) {
1361  parse_manifest_adaptationset(s, url, adaptionset_node, mpd_baseurl_node, period_baseurl_node, period_segmenttemplate_node, period_segmentlist_node);
1362  }
1363  adaptionset_node = xmlNextElementSibling(adaptionset_node);
1364  }
1365 cleanup:
1366  /*free the document */
1367  xmlFreeDoc(doc);
1368  xmlCleanupParser();
1369  xmlFreeNode(mpd_baseurl_node);
1370  }
1371 
1372  av_free(new_url);
1373  av_free(buffer);
1374  if (close_in) {
1375  avio_close(in);
1376  }
1377  return ret;
1378 }
1379 
1380 static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
1381 {
1382  DASHContext *c = s->priv_data;
1383  int64_t num = 0;
1384  int64_t start_time_offset = 0;
1385 
1386  if (c->is_live) {
1387  if (pls->n_fragments) {
1388  av_log(s, AV_LOG_TRACE, "in n_fragments mode\n");
1389  num = pls->first_seq_no;
1390  } else if (pls->n_timelines) {
1391  av_log(s, AV_LOG_TRACE, "in n_timelines mode\n");
1392  start_time_offset = get_segment_start_time_based_on_timeline(pls, 0xFFFFFFFF) - 60 * pls->fragment_timescale; // 60 seconds before end
1393  num = calc_next_seg_no_from_timelines(pls, start_time_offset);
1394  if (num == -1)
1395  num = pls->first_seq_no;
1396  else
1397  num += pls->first_seq_no;
1398  } else if (pls->fragment_duration){
1399  av_log(s, AV_LOG_TRACE, "in fragment_duration mode fragment_timescale = %"PRId64", presentation_timeoffset = %"PRId64"\n", pls->fragment_timescale, pls->presentation_timeoffset);
1400  if (pls->presentation_timeoffset) {
1402  } else if (c->publish_time > 0 && !c->availability_start_time) {
1403  if (c->min_buffer_time) {
1405  } else {
1407  }
1408  } else {
1410  }
1411  }
1412  } else {
1413  num = pls->first_seq_no;
1414  }
1415  return num;
1416 }
1417 
1418 static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
1419 {
1420  DASHContext *c = s->priv_data;
1421  int64_t num = 0;
1422 
1423  if (c->is_live && pls->fragment_duration) {
1424  av_log(s, AV_LOG_TRACE, "in live mode\n");
1426  } else {
1427  num = pls->first_seq_no;
1428  }
1429  return num;
1430 }
1431 
1432 static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
1433 {
1434  int64_t num = 0;
1435 
1436  if (pls->n_fragments) {
1437  num = pls->first_seq_no + pls->n_fragments - 1;
1438  } else if (pls->n_timelines) {
1439  int i = 0;
1440  num = pls->first_seq_no + pls->n_timelines - 1;
1441  for (i = 0; i < pls->n_timelines; i++) {
1442  if (pls->timelines[i]->repeat == -1) {
1443  int length_of_each_segment = pls->timelines[i]->duration / pls->fragment_timescale;
1444  num = c->period_duration / length_of_each_segment;
1445  } else {
1446  num += pls->timelines[i]->repeat;
1447  }
1448  }
1449  } else if (c->is_live && pls->fragment_duration) {
1451  } else if (pls->fragment_duration) {
1453  }
1454 
1455  return num;
1456 }
1457 
1458 static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
1459 {
1460  if (rep_dest && rep_src ) {
1461  free_timelines_list(rep_dest);
1462  rep_dest->timelines = rep_src->timelines;
1463  rep_dest->n_timelines = rep_src->n_timelines;
1464  rep_dest->first_seq_no = rep_src->first_seq_no;
1465  rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
1466  rep_src->timelines = NULL;
1467  rep_src->n_timelines = 0;
1468  rep_dest->cur_seq_no = rep_src->cur_seq_no;
1469  }
1470 }
1471 
1472 static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
1473 {
1474  if (rep_dest && rep_src ) {
1475  free_fragment_list(rep_dest);
1476  if (rep_src->start_number > (rep_dest->start_number + rep_dest->n_fragments))
1477  rep_dest->cur_seq_no = 0;
1478  else
1479  rep_dest->cur_seq_no += rep_src->start_number - rep_dest->start_number;
1480  rep_dest->fragments = rep_src->fragments;
1481  rep_dest->n_fragments = rep_src->n_fragments;
1482  rep_dest->parent = rep_src->parent;
1483  rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
1484  rep_src->fragments = NULL;
1485  rep_src->n_fragments = 0;
1486  }
1487 }
1488 
1489 
1491 {
1492  int ret = 0, i;
1493  DASHContext *c = s->priv_data;
1494  // save current context
1495  int n_videos = c->n_videos;
1496  struct representation **videos = c->videos;
1497  int n_audios = c->n_audios;
1498  struct representation **audios = c->audios;
1499  int n_subtitles = c->n_subtitles;
1500  struct representation **subtitles = c->subtitles;
1501  char *base_url = c->base_url;
1502 
1503  c->base_url = NULL;
1504  c->n_videos = 0;
1505  c->videos = NULL;
1506  c->n_audios = 0;
1507  c->audios = NULL;
1508  c->n_subtitles = 0;
1509  c->subtitles = NULL;
1510  ret = parse_manifest(s, s->url, NULL);
1511  if (ret)
1512  goto finish;
1513 
1514  if (c->n_videos != n_videos) {
1515  av_log(c, AV_LOG_ERROR,
1516  "new manifest has mismatched no. of video representations, %d -> %d\n",
1517  n_videos, c->n_videos);
1518  return AVERROR_INVALIDDATA;
1519  }
1520  if (c->n_audios != n_audios) {
1521  av_log(c, AV_LOG_ERROR,
1522  "new manifest has mismatched no. of audio representations, %d -> %d\n",
1523  n_audios, c->n_audios);
1524  return AVERROR_INVALIDDATA;
1525  }
1526  if (c->n_subtitles != n_subtitles) {
1527  av_log(c, AV_LOG_ERROR,
1528  "new manifest has mismatched no. of subtitles representations, %d -> %d\n",
1529  n_subtitles, c->n_subtitles);
1530  return AVERROR_INVALIDDATA;
1531  }
1532 
1533  for (i = 0; i < n_videos; i++) {
1534  struct representation *cur_video = videos[i];
1535  struct representation *ccur_video = c->videos[i];
1536  if (cur_video->timelines) {
1537  // calc current time
1538  int64_t currentTime = get_segment_start_time_based_on_timeline(cur_video, cur_video->cur_seq_no) / cur_video->fragment_timescale;
1539  // update segments
1540  ccur_video->cur_seq_no = calc_next_seg_no_from_timelines(ccur_video, currentTime * cur_video->fragment_timescale - 1);
1541  if (ccur_video->cur_seq_no >= 0) {
1542  move_timelines(ccur_video, cur_video, c);
1543  }
1544  }
1545  if (cur_video->fragments) {
1546  move_segments(ccur_video, cur_video, c);
1547  }
1548  }
1549  for (i = 0; i < n_audios; i++) {
1550  struct representation *cur_audio = audios[i];
1551  struct representation *ccur_audio = c->audios[i];
1552  if (cur_audio->timelines) {
1553  // calc current time
1554  int64_t currentTime = get_segment_start_time_based_on_timeline(cur_audio, cur_audio->cur_seq_no) / cur_audio->fragment_timescale;
1555  // update segments
1556  ccur_audio->cur_seq_no = calc_next_seg_no_from_timelines(ccur_audio, currentTime * cur_audio->fragment_timescale - 1);
1557  if (ccur_audio->cur_seq_no >= 0) {
1558  move_timelines(ccur_audio, cur_audio, c);
1559  }
1560  }
1561  if (cur_audio->fragments) {
1562  move_segments(ccur_audio, cur_audio, c);
1563  }
1564  }
1565 
1566 finish:
1567  // restore context
1568  if (c->base_url)
1569  av_free(base_url);
1570  else
1571  c->base_url = base_url;
1572 
1573  if (c->subtitles)
1574  free_subtitle_list(c);
1575  if (c->audios)
1576  free_audio_list(c);
1577  if (c->videos)
1578  free_video_list(c);
1579 
1580  c->n_subtitles = n_subtitles;
1581  c->subtitles = subtitles;
1582  c->n_audios = n_audios;
1583  c->audios = audios;
1584  c->n_videos = n_videos;
1585  c->videos = videos;
1586  return ret;
1587 }
1588 
1589 static struct fragment *get_current_fragment(struct representation *pls)
1590 {
1591  int64_t min_seq_no = 0;
1592  int64_t max_seq_no = 0;
1593  struct fragment *seg = NULL;
1594  struct fragment *seg_ptr = NULL;
1595  DASHContext *c = pls->parent->priv_data;
1596 
1597  while (( !ff_check_interrupt(c->interrupt_callback)&& pls->n_fragments > 0)) {
1598  if (pls->cur_seq_no < pls->n_fragments) {
1599  seg_ptr = pls->fragments[pls->cur_seq_no];
1600  seg = av_mallocz(sizeof(struct fragment));
1601  if (!seg) {
1602  return NULL;
1603  }
1604  seg->url = av_strdup(seg_ptr->url);
1605  if (!seg->url) {
1606  av_free(seg);
1607  return NULL;
1608  }
1609  seg->size = seg_ptr->size;
1610  seg->url_offset = seg_ptr->url_offset;
1611  return seg;
1612  } else if (c->is_live) {
1613  refresh_manifest(pls->parent);
1614  } else {
1615  break;
1616  }
1617  }
1618  if (c->is_live) {
1619  min_seq_no = calc_min_seg_no(pls->parent, pls);
1620  max_seq_no = calc_max_seg_no(pls, c);
1621 
1622  if (pls->timelines || pls->fragments) {
1623  refresh_manifest(pls->parent);
1624  }
1625  if (pls->cur_seq_no <= min_seq_no) {
1626  av_log(pls->parent, AV_LOG_VERBOSE, "old fragment: cur[%"PRId64"] min[%"PRId64"] max[%"PRId64"], playlist %d\n", (int64_t)pls->cur_seq_no, min_seq_no, max_seq_no, (int)pls->rep_idx);
1627  pls->cur_seq_no = calc_cur_seg_no(pls->parent, pls);
1628  } else if (pls->cur_seq_no > max_seq_no) {
1629  av_log(pls->parent, AV_LOG_VERBOSE, "new fragment: min[%"PRId64"] max[%"PRId64"], playlist %d\n", min_seq_no, max_seq_no, (int)pls->rep_idx);
1630  }
1631  seg = av_mallocz(sizeof(struct fragment));
1632  if (!seg) {
1633  return NULL;
1634  }
1635  } else if (pls->cur_seq_no <= pls->last_seq_no) {
1636  seg = av_mallocz(sizeof(struct fragment));
1637  if (!seg) {
1638  return NULL;
1639  }
1640  }
1641  if (seg) {
1642  char *tmpfilename= av_mallocz(c->max_url_size);
1643  if (!tmpfilename) {
1644  return NULL;
1645  }
1647  seg->url = av_strireplace(pls->url_template, pls->url_template, tmpfilename);
1648  if (!seg->url) {
1649  av_log(pls->parent, AV_LOG_WARNING, "Unable to resolve template url '%s', try to use origin template\n", pls->url_template);
1650  seg->url = av_strdup(pls->url_template);
1651  if (!seg->url) {
1652  av_log(pls->parent, AV_LOG_ERROR, "Cannot resolve template url '%s'\n", pls->url_template);
1653  av_free(tmpfilename);
1654  return NULL;
1655  }
1656  }
1657  av_free(tmpfilename);
1658  seg->size = -1;
1659  }
1660 
1661  return seg;
1662 }
1663 
1664 static int read_from_url(struct representation *pls, struct fragment *seg,
1665  uint8_t *buf, int buf_size)
1666 {
1667  int ret;
1668 
1669  /* limit read if the fragment was only a part of a file */
1670  if (seg->size >= 0)
1671  buf_size = FFMIN(buf_size, pls->cur_seg_size - pls->cur_seg_offset);
1672 
1673  ret = avio_read(pls->input, buf, buf_size);
1674  if (ret > 0)
1675  pls->cur_seg_offset += ret;
1676 
1677  return ret;
1678 }
1679 
1680 static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
1681 {
1682  AVDictionary *opts = NULL;
1683  char *url = NULL;
1684  int ret = 0;
1685 
1686  url = av_mallocz(c->max_url_size);
1687  if (!url) {
1688  ret = AVERROR(ENOMEM);
1689  goto cleanup;
1690  }
1691 
1692  if (seg->size >= 0) {
1693  /* try to restrict the HTTP request to the part we want
1694  * (if this is in fact a HTTP request) */
1695  av_dict_set_int(&opts, "offset", seg->url_offset, 0);
1696  av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
1697  }
1698 
1699  ff_make_absolute_url(url, c->max_url_size, c->base_url, seg->url);
1700  av_log(pls->parent, AV_LOG_VERBOSE, "DASH request for url '%s', offset %"PRId64", playlist %d\n",
1701  url, seg->url_offset, pls->rep_idx);
1702  ret = open_url(pls->parent, &pls->input, url, c->avio_opts, opts, NULL);
1703 
1704 cleanup:
1705  av_free(url);
1706  av_dict_free(&opts);
1707  pls->cur_seg_offset = 0;
1708  pls->cur_seg_size = seg->size;
1709  return ret;
1710 }
1711 
1712 static int update_init_section(struct representation *pls)
1713 {
1714  static const int max_init_section_size = 1024 * 1024;
1715  DASHContext *c = pls->parent->priv_data;
1716  int64_t sec_size;
1717  int64_t urlsize;
1718  int ret;
1719 
1720  if (!pls->init_section || pls->init_sec_buf)
1721  return 0;
1722 
1723  ret = open_input(c, pls, pls->init_section);
1724  if (ret < 0) {
1726  "Failed to open an initialization section in playlist %d\n",
1727  pls->rep_idx);
1728  return ret;
1729  }
1730 
1731  if (pls->init_section->size >= 0)
1732  sec_size = pls->init_section->size;
1733  else if ((urlsize = avio_size(pls->input)) >= 0)
1734  sec_size = urlsize;
1735  else
1736  sec_size = max_init_section_size;
1737 
1738  av_log(pls->parent, AV_LOG_DEBUG,
1739  "Downloading an initialization section of size %"PRId64"\n",
1740  sec_size);
1741 
1742  sec_size = FFMIN(sec_size, max_init_section_size);
1743 
1744  av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
1745 
1746  ret = read_from_url(pls, pls->init_section, pls->init_sec_buf,
1747  pls->init_sec_buf_size);
1748  ff_format_io_close(pls->parent, &pls->input);
1749 
1750  if (ret < 0)
1751  return ret;
1752 
1753  pls->init_sec_data_len = ret;
1754  pls->init_sec_buf_read_offset = 0;
1755 
1756  return 0;
1757 }
1758 
1759 static int64_t seek_data(void *opaque, int64_t offset, int whence)
1760 {
1761  struct representation *v = opaque;
1762  if (v->n_fragments && !v->init_sec_data_len) {
1763  return avio_seek(v->input, offset, whence);
1764  }
1765 
1766  return AVERROR(ENOSYS);
1767 }
1768 
1769 static int read_data(void *opaque, uint8_t *buf, int buf_size)
1770 {
1771  int ret = 0;
1772  struct representation *v = opaque;
1773  DASHContext *c = v->parent->priv_data;
1774 
1775 restart:
1776  if (!v->input) {
1777  free_fragment(&v->cur_seg);
1778  v->cur_seg = get_current_fragment(v);
1779  if (!v->cur_seg) {
1780  ret = AVERROR_EOF;
1781  goto end;
1782  }
1783 
1784  /* load/update Media Initialization Section, if any */
1785  ret = update_init_section(v);
1786  if (ret)
1787  goto end;
1788 
1789  ret = open_input(c, v, v->cur_seg);
1790  if (ret < 0) {
1792  ret = AVERROR_EXIT;
1793  goto end;
1794  }
1795  av_log(v->parent, AV_LOG_WARNING, "Failed to open fragment of playlist %d\n", v->rep_idx);
1796  v->cur_seq_no++;
1797  goto restart;
1798  }
1799  }
1800 
1802  /* Push init section out first before first actual fragment */
1803  int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
1804  memcpy(buf, v->init_sec_buf, copy_size);
1805  v->init_sec_buf_read_offset += copy_size;
1806  ret = copy_size;
1807  goto end;
1808  }
1809 
1810  /* check the v->cur_seg, if it is null, get current and double check if the new v->cur_seg*/
1811  if (!v->cur_seg) {
1812  v->cur_seg = get_current_fragment(v);
1813  }
1814  if (!v->cur_seg) {
1815  ret = AVERROR_EOF;
1816  goto end;
1817  }
1818  ret = read_from_url(v, v->cur_seg, buf, buf_size);
1819  if (ret > 0)
1820  goto end;
1821 
1822  if (c->is_live || v->cur_seq_no < v->last_seq_no) {
1823  if (!v->is_restart_needed)
1824  v->cur_seq_no++;
1825  v->is_restart_needed = 1;
1826  }
1827 
1828 end:
1829  return ret;
1830 }
1831 
1833 {
1834  DASHContext *c = s->priv_data;
1835  const char *opts[] = {
1836  "headers", "user_agent", "cookies", "http_proxy", "referer", "rw_timeout", NULL };
1837  const char **opt = opts;
1838  uint8_t *buf = NULL;
1839  int ret = 0;
1840 
1841  while (*opt) {
1842  if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN, &buf) >= 0) {
1843  if (buf[0] != '\0') {
1844  ret = av_dict_set(&c->avio_opts, *opt, buf, AV_DICT_DONT_STRDUP_VAL);
1845  if (ret < 0) {
1846  av_freep(&buf);
1847  return ret;
1848  }
1849  } else {
1850  av_freep(&buf);
1851  }
1852  }
1853  opt++;
1854  }
1855 
1856  return ret;
1857 }
1858 
1859 static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
1860  int flags, AVDictionary **opts)
1861 {
1862  av_log(s, AV_LOG_ERROR,
1863  "A DASH playlist item '%s' referred to an external file '%s'. "
1864  "Opening this file was forbidden for security reasons\n",
1865  s->url, url);
1866  return AVERROR(EPERM);
1867 }
1868 
1870 {
1871  /* note: the internal buffer could have changed */
1872  av_freep(&pls->pb.buffer);
1873  memset(&pls->pb, 0x00, sizeof(AVIOContext));
1874  pls->ctx->pb = NULL;
1875  avformat_close_input(&pls->ctx);
1876  pls->ctx = NULL;
1877 }
1878 
1880 {
1881  DASHContext *c = s->priv_data;
1882  ff_const59 AVInputFormat *in_fmt = NULL;
1883  AVDictionary *in_fmt_opts = NULL;
1884  uint8_t *avio_ctx_buffer = NULL;
1885  int ret = 0, i;
1886 
1887  if (pls->ctx) {
1889  }
1890 
1892  ret = AVERROR_EXIT;
1893  goto fail;
1894  }
1895 
1896  if (!(pls->ctx = avformat_alloc_context())) {
1897  ret = AVERROR(ENOMEM);
1898  goto fail;
1899  }
1900 
1901  avio_ctx_buffer = av_malloc(INITIAL_BUFFER_SIZE);
1902  if (!avio_ctx_buffer ) {
1903  ret = AVERROR(ENOMEM);
1904  avformat_free_context(pls->ctx);
1905  pls->ctx = NULL;
1906  goto fail;
1907  }
1908  if (c->is_live) {
1909  ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, NULL);
1910  } else {
1911  ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, seek_data);
1912  }
1913  pls->pb.seekable = 0;
1914 
1915  if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
1916  goto fail;
1917 
1918  pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
1919  pls->ctx->probesize = 1024 * 4;
1921  ret = av_probe_input_buffer(&pls->pb, &in_fmt, "", NULL, 0, 0);
1922  if (ret < 0) {
1923  av_log(s, AV_LOG_ERROR, "Error when loading first fragment, playlist %d\n", (int)pls->rep_idx);
1924  avformat_free_context(pls->ctx);
1925  pls->ctx = NULL;
1926  goto fail;
1927  }
1928 
1929  pls->ctx->pb = &pls->pb;
1930  pls->ctx->io_open = nested_io_open;
1931 
1932  // provide additional information from mpd if available
1933  ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url
1934  av_dict_free(&in_fmt_opts);
1935  if (ret < 0)
1936  goto fail;
1937  if (pls->n_fragments) {
1938 #if FF_API_R_FRAME_RATE
1939  if (pls->framerate.den) {
1940  for (i = 0; i < pls->ctx->nb_streams; i++)
1941  pls->ctx->streams[i]->r_frame_rate = pls->framerate;
1942  }
1943 #endif
1944  ret = avformat_find_stream_info(pls->ctx, NULL);
1945  if (ret < 0)
1946  goto fail;
1947  }
1948 
1949 fail:
1950  return ret;
1951 }
1952 
1954 {
1955  int ret = 0;
1956  int i;
1957 
1958  pls->parent = s;
1959  pls->cur_seq_no = calc_cur_seg_no(s, pls);
1960 
1961  if (!pls->last_seq_no) {
1962  pls->last_seq_no = calc_max_seg_no(pls, s->priv_data);
1963  }
1964 
1965  ret = reopen_demux_for_component(s, pls);
1966  if (ret < 0) {
1967  goto fail;
1968  }
1969  for (i = 0; i < pls->ctx->nb_streams; i++) {
1970  AVStream *st = avformat_new_stream(s, NULL);
1971  AVStream *ist = pls->ctx->streams[i];
1972  if (!st) {
1973  ret = AVERROR(ENOMEM);
1974  goto fail;
1975  }
1976  st->id = i;
1979  }
1980 
1981  return 0;
1982 fail:
1983  return ret;
1984 }
1985 
1986 static int is_common_init_section_exist(struct representation **pls, int n_pls)
1987 {
1988  struct fragment *first_init_section = pls[0]->init_section;
1989  char *url =NULL;
1990  int64_t url_offset = -1;
1991  int64_t size = -1;
1992  int i = 0;
1993 
1994  if (first_init_section == NULL || n_pls == 0)
1995  return 0;
1996 
1997  url = first_init_section->url;
1998  url_offset = first_init_section->url_offset;
1999  size = pls[0]->init_section->size;
2000  for (i=0;i<n_pls;i++) {
2001  if (av_strcasecmp(pls[i]->init_section->url,url) || pls[i]->init_section->url_offset != url_offset || pls[i]->init_section->size != size) {
2002  return 0;
2003  }
2004  }
2005  return 1;
2006 }
2007 
2008 static int copy_init_section(struct representation *rep_dest, struct representation *rep_src)
2009 {
2010  rep_dest->init_sec_buf = av_mallocz(rep_src->init_sec_buf_size);
2011  if (!rep_dest->init_sec_buf) {
2012  av_log(rep_dest->ctx, AV_LOG_WARNING, "Cannot alloc memory for init_sec_buf\n");
2013  return AVERROR(ENOMEM);
2014  }
2015  memcpy(rep_dest->init_sec_buf, rep_src->init_sec_buf, rep_src->init_sec_data_len);
2016  rep_dest->init_sec_buf_size = rep_src->init_sec_buf_size;
2017  rep_dest->init_sec_data_len = rep_src->init_sec_data_len;
2018  rep_dest->cur_timestamp = rep_src->cur_timestamp;
2019 
2020  return 0;
2021 }
2022 
2023 
2025 {
2026  DASHContext *c = s->priv_data;
2027  struct representation *rep;
2028  int ret = 0;
2029  int stream_index = 0;
2030  int i;
2031 
2033 
2034  if ((ret = save_avio_options(s)) < 0)
2035  goto fail;
2036 
2037  if ((ret = parse_manifest(s, s->url, s->pb)) < 0)
2038  goto fail;
2039 
2040  /* If this isn't a live stream, fill the total duration of the
2041  * stream. */
2042  if (!c->is_live) {
2044  } else {
2045  av_dict_set(&c->avio_opts, "seekable", "0", 0);
2046  }
2047 
2048  if(c->n_videos)
2050 
2051  /* Open the demuxer for video and audio components if available */
2052  for (i = 0; i < c->n_videos; i++) {
2053  rep = c->videos[i];
2054  if (i > 0 && c->is_init_section_common_video) {
2055  ret = copy_init_section(rep, c->videos[0]);
2056  if (ret < 0)
2057  goto fail;
2058  }
2059  ret = open_demux_for_component(s, rep);
2060 
2061  if (ret)
2062  goto fail;
2063  rep->stream_index = stream_index;
2064  ++stream_index;
2065  }
2066 
2067  if(c->n_audios)
2069 
2070  for (i = 0; i < c->n_audios; i++) {
2071  rep = c->audios[i];
2072  if (i > 0 && c->is_init_section_common_audio) {
2073  ret = copy_init_section(rep, c->audios[0]);
2074  if (ret < 0)
2075  goto fail;
2076  }
2077  ret = open_demux_for_component(s, rep);
2078 
2079  if (ret)
2080  goto fail;
2081  rep->stream_index = stream_index;
2082  ++stream_index;
2083  }
2084 
2085  if (c->n_subtitles)
2087 
2088  for (i = 0; i < c->n_subtitles; i++) {
2089  rep = c->subtitles[i];
2090  if (i > 0 && c->is_init_section_common_audio) {
2091  ret = copy_init_section(rep, c->subtitles[0]);
2092  if (ret < 0)
2093  goto fail;
2094  }
2095  ret = open_demux_for_component(s, rep);
2096 
2097  if (ret)
2098  goto fail;
2099  rep->stream_index = stream_index;
2100  ++stream_index;
2101  }
2102 
2103  if (!stream_index) {
2104  ret = AVERROR_INVALIDDATA;
2105  goto fail;
2106  }
2107 
2108  /* Create a program */
2109  if (!ret) {
2110  AVProgram *program;
2111  program = av_new_program(s, 0);
2112  if (!program) {
2113  goto fail;
2114  }
2115 
2116  for (i = 0; i < c->n_videos; i++) {
2117  rep = c->videos[i];
2119  rep->assoc_stream = s->streams[rep->stream_index];
2120  if (rep->bandwidth > 0)
2121  av_dict_set_int(&rep->assoc_stream->metadata, "variant_bitrate", rep->bandwidth, 0);
2122  if (rep->id[0])
2123  av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
2124  }
2125  for (i = 0; i < c->n_audios; i++) {
2126  rep = c->audios[i];
2128  rep->assoc_stream = s->streams[rep->stream_index];
2129  if (rep->bandwidth > 0)
2130  av_dict_set_int(&rep->assoc_stream->metadata, "variant_bitrate", rep->bandwidth, 0);
2131  if (rep->id[0])
2132  av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
2133  }
2134  for (i = 0; i < c->n_subtitles; i++) {
2135  rep = c->subtitles[i];
2137  rep->assoc_stream = s->streams[rep->stream_index];
2138  if (rep->id[0])
2139  av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
2140  }
2141  }
2142 
2143  return 0;
2144 fail:
2145  return ret;
2146 }
2147 
2149 {
2150  int i, j;
2151 
2152  for (i = 0; i < n; i++) {
2153  struct representation *pls = p[i];
2154  int needed = !pls->assoc_stream || pls->assoc_stream->discard < AVDISCARD_ALL;
2155 
2156  if (needed && !pls->ctx) {
2157  pls->cur_seg_offset = 0;
2158  pls->init_sec_buf_read_offset = 0;
2159  /* Catch up */
2160  for (j = 0; j < n; j++) {
2161  pls->cur_seq_no = FFMAX(pls->cur_seq_no, p[j]->cur_seq_no);
2162  }
2164  av_log(s, AV_LOG_INFO, "Now receiving stream_index %d\n", pls->stream_index);
2165  } else if (!needed && pls->ctx) {
2167  if (pls->input)
2168  ff_format_io_close(pls->parent, &pls->input);
2169  av_log(s, AV_LOG_INFO, "No longer receiving stream_index %d\n", pls->stream_index);
2170  }
2171  }
2172 }
2173 
2175 {
2176  DASHContext *c = s->priv_data;
2177  int ret = 0, i;
2178  int64_t mints = 0;
2179  struct representation *cur = NULL;
2180  struct representation *rep = NULL;
2181 
2185 
2186  for (i = 0; i < c->n_videos; i++) {
2187  rep = c->videos[i];
2188  if (!rep->ctx)
2189  continue;
2190  if (!cur || rep->cur_timestamp < mints) {
2191  cur = rep;
2192  mints = rep->cur_timestamp;
2193  }
2194  }
2195  for (i = 0; i < c->n_audios; i++) {
2196  rep = c->audios[i];
2197  if (!rep->ctx)
2198  continue;
2199  if (!cur || rep->cur_timestamp < mints) {
2200  cur = rep;
2201  mints = rep->cur_timestamp;
2202  }
2203  }
2204 
2205  for (i = 0; i < c->n_subtitles; i++) {
2206  rep = c->subtitles[i];
2207  if (!rep->ctx)
2208  continue;
2209  if (!cur || rep->cur_timestamp < mints) {
2210  cur = rep;
2211  mints = rep->cur_timestamp;
2212  }
2213  }
2214 
2215  if (!cur) {
2216  return AVERROR_INVALIDDATA;
2217  }
2218  while (!ff_check_interrupt(c->interrupt_callback) && !ret) {
2219  ret = av_read_frame(cur->ctx, pkt);
2220  if (ret >= 0) {
2221  /* If we got a packet, return it */
2222  cur->cur_timestamp = av_rescale(pkt->pts, (int64_t)cur->ctx->streams[0]->time_base.num * 90000, cur->ctx->streams[0]->time_base.den);
2223  pkt->stream_index = cur->stream_index;
2224  return 0;
2225  }
2226  if (cur->is_restart_needed) {
2227  cur->cur_seg_offset = 0;
2228  cur->init_sec_buf_read_offset = 0;
2229  if (cur->input)
2230  ff_format_io_close(cur->parent, &cur->input);
2231  ret = reopen_demux_for_component(s, cur);
2232  cur->is_restart_needed = 0;
2233  }
2234  }
2235  return AVERROR_EOF;
2236 }
2237 
2239 {
2240  DASHContext *c = s->priv_data;
2241  free_audio_list(c);
2242  free_video_list(c);
2243  av_dict_free(&c->avio_opts);
2244  av_freep(&c->base_url);
2245  return 0;
2246 }
2247 
2248 static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
2249 {
2250  int ret = 0;
2251  int i = 0;
2252  int j = 0;
2253  int64_t duration = 0;
2254 
2255  av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms], playlist %d%s\n",
2256  seek_pos_msec, pls->rep_idx, dry_run ? " (dry)" : "");
2257 
2258  // single fragment mode
2259  if (pls->n_fragments == 1) {
2260  pls->cur_timestamp = 0;
2261  pls->cur_seg_offset = 0;
2262  if (dry_run)
2263  return 0;
2264  ff_read_frame_flush(pls->ctx);
2265  return av_seek_frame(pls->ctx, -1, seek_pos_msec * 1000, flags);
2266  }
2267 
2268  if (pls->input)
2269  ff_format_io_close(pls->parent, &pls->input);
2270 
2271  // find the nearest fragment
2272  if (pls->n_timelines > 0 && pls->fragment_timescale > 0) {
2273  int64_t num = pls->first_seq_no;
2274  av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline start n_timelines[%d] "
2275  "last_seq_no[%"PRId64"], playlist %d.\n",
2276  (int)pls->n_timelines, (int64_t)pls->last_seq_no, (int)pls->rep_idx);
2277  for (i = 0; i < pls->n_timelines; i++) {
2278  if (pls->timelines[i]->starttime > 0) {
2279  duration = pls->timelines[i]->starttime;
2280  }
2281  duration += pls->timelines[i]->duration;
2282  if (seek_pos_msec < ((duration * 1000) / pls->fragment_timescale)) {
2283  goto set_seq_num;
2284  }
2285  for (j = 0; j < pls->timelines[i]->repeat; j++) {
2286  duration += pls->timelines[i]->duration;
2287  num++;
2288  if (seek_pos_msec < ((duration * 1000) / pls->fragment_timescale)) {
2289  goto set_seq_num;
2290  }
2291  }
2292  num++;
2293  }
2294 
2295 set_seq_num:
2296  pls->cur_seq_no = num > pls->last_seq_no ? pls->last_seq_no : num;
2297  av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline end cur_seq_no[%"PRId64"], playlist %d.\n",
2298  (int64_t)pls->cur_seq_no, (int)pls->rep_idx);
2299  } else if (pls->fragment_duration > 0) {
2300  pls->cur_seq_no = pls->first_seq_no + ((seek_pos_msec * pls->fragment_timescale) / pls->fragment_duration) / 1000;
2301  } else {
2302  av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing timeline or fragment_duration\n");
2303  pls->cur_seq_no = pls->first_seq_no;
2304  }
2305  pls->cur_timestamp = 0;
2306  pls->cur_seg_offset = 0;
2307  pls->init_sec_buf_read_offset = 0;
2308  ret = dry_run ? 0 : reopen_demux_for_component(s, pls);
2309 
2310  return ret;
2311 }
2312 
2313 static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2314 {
2315  int ret = 0, i;
2316  DASHContext *c = s->priv_data;
2317  int64_t seek_pos_msec = av_rescale_rnd(timestamp, 1000,
2318  s->streams[stream_index]->time_base.den,
2319  flags & AVSEEK_FLAG_BACKWARD ?
2321  if ((flags & AVSEEK_FLAG_BYTE) || c->is_live)
2322  return AVERROR(ENOSYS);
2323 
2324  /* Seek in discarded streams with dry_run=1 to avoid reopening them */
2325  for (i = 0; i < c->n_videos; i++) {
2326  if (!ret)
2327  ret = dash_seek(s, c->videos[i], seek_pos_msec, flags, !c->videos[i]->ctx);
2328  }
2329  for (i = 0; i < c->n_audios; i++) {
2330  if (!ret)
2331  ret = dash_seek(s, c->audios[i], seek_pos_msec, flags, !c->audios[i]->ctx);
2332  }
2333  for (i = 0; i < c->n_subtitles; i++) {
2334  if (!ret)
2335  ret = dash_seek(s, c->subtitles[i], seek_pos_msec, flags, !c->subtitles[i]->ctx);
2336  }
2337 
2338  return ret;
2339 }
2340 
2341 static int dash_probe(const AVProbeData *p)
2342 {
2343  if (!av_stristr(p->buf, "<MPD"))
2344  return 0;
2345 
2346  if (av_stristr(p->buf, "dash:profile:isoff-on-demand:2011") ||
2347  av_stristr(p->buf, "dash:profile:isoff-live:2011") ||
2348  av_stristr(p->buf, "dash:profile:isoff-live:2012") ||
2349  av_stristr(p->buf, "dash:profile:isoff-main:2011")) {
2350  return AVPROBE_SCORE_MAX;
2351  }
2352  if (av_stristr(p->buf, "dash:profile")) {
2353  return AVPROBE_SCORE_MAX;
2354  }
2355 
2356  return 0;
2357 }
2358 
2359 #define OFFSET(x) offsetof(DASHContext, x)
2360 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2361 static const AVOption dash_options[] = {
2362  {"allowed_extensions", "List of file extensions that dash is allowed to access",
2363  OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
2364  {.str = "aac,m4a,m4s,m4v,mov,mp4,webm"},
2365  INT_MIN, INT_MAX, FLAGS},
2366  {NULL}
2367 };
2368 
2369 static const AVClass dash_class = {
2370  .class_name = "dash",
2371  .item_name = av_default_item_name,
2372  .option = dash_options,
2373  .version = LIBAVUTIL_VERSION_INT,
2374 };
2375 
2377  .name = "dash",
2378  .long_name = NULL_IF_CONFIG_SMALL("Dynamic Adaptive Streaming over HTTP"),
2379  .priv_class = &dash_class,
2380  .priv_data_size = sizeof(DASHContext),
2387 };
time_t av_timegm(struct tm *tm)
Convert the decomposed UTC time in tm to a time_t value.
Definition: parseutils.c:568
int64_t cur_seg_size
Definition: dashdec.c:109
#define FLAGS
Definition: dashdec.c:2360
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2511
int64_t probesize
Maximum size of the data read from input for determining the input container format.
Definition: avformat.h:1524
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:1940
AVIOContext * input
Definition: dashdec.c:78
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:863
void ff_make_absolute_url(char *buf, int size, const char *base, const char *rel)
Convert a relative url into an absolute url, given a base url.
Definition: url.c:80
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:336
int64_t url_offset
Definition: dashdec.c:34
int n_fragments
Definition: dashdec.c:92
char * allowed_extensions
Definition: dashdec.c:162
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
Definition: parseutils.c:179
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1636
AVOption.
Definition: opt.h:246
int n_audios
Definition: dashdec.c:141
static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
Definition: dashdec.c:262
int n_timelines
Definition: dashdec.c:95
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVPacket pkt
Definition: dashdec.c:81
static int read_data(void *opaque, uint8_t *buf, int buf_size)
Definition: dashdec.c:1769
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4886
int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
Copies the whilelists from one context to the other.
Definition: utils.c:164
char * av_stristr(const char *s1, const char *s2)
Locate the first case-independent occurrence in the string haystack of the string needle...
Definition: avstring.c:56
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
static int ishttp(char *url)
Definition: dashdec.c:172
int num
Numerator.
Definition: rational.h:59
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
#define AVIO_FLAG_READ
read-only
Definition: avio.h:654
int64_t size
Definition: dashdec.c:35
unsigned char * buffer
Start of the buffer.
Definition: avio.h:226
static struct fragment * get_current_fragment(struct representation *pls)
Definition: dashdec.c:1589
static int read_from_url(struct representation *pls, struct fragment *seg, uint8_t *buf, int buf_size)
Definition: dashdec.c:1664
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int avformat_open_input(AVFormatContext **ps, const char *url, ff_const59 AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
Definition: utils.c:537
static const AVOption dash_options[]
Definition: dashdec.c:2361
static int64_t seek_data(void *opaque, int64_t offset, int whence)
Definition: dashdec.c:1759
discard all
Definition: avcodec.h:811
static AVPacket pkt
int av_probe_input_buffer(AVIOContext *pb, ff_const59 AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size)
Like av_probe_input_buffer2() but returns 0 on success.
Definition: format.c:312
int64_t cur_timestamp
Definition: dashdec.c:118
int n_videos
Definition: dashdec.c:139
uint64_t availability_end_time
Definition: dashdec.c:150
static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representation *rep, xmlNodePtr fragmenturl_node, xmlNodePtr *baseurl_nodes, char *rep_id_val, char *rep_bandwidth_val)
Definition: dashdec.c:609
int is_init_section_common_audio
Definition: dashdec.c:168
uint64_t min_buffer_time
Definition: dashdec.c:154
static void free_fragment(struct fragment **seg)
Definition: dashdec.c:327
Format I/O context.
Definition: avformat.h:1358
#define MAX_URL_SIZE
Definition: internal.h:30
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
void ff_read_frame_flush(AVFormatContext *s)
Flush the frame reader.
Definition: utils.c:1918
struct fragment * init_section
Definition: dashdec.c:113
uint32_t init_sec_buf_read_offset
Definition: dashdec.c:117
int stream_index
Definition: dashdec.c:84
static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char *datetime)
Definition: dashdec.c:188
static char buffer[20]
Definition: seek.c:32
static int64_t start_time
Definition: ffplay.c:331
uint64_t suggested_presentation_delay
Definition: dashdec.c:148
uint8_t
static int parse_programinformation(AVFormatContext *s, xmlNodePtr node)
Definition: dashdec.c:1164
Round toward +infinity.
Definition: mathematics.h:83
#define av_malloc(s)
uint64_t media_presentation_duration
Definition: dashdec.c:147
AVOptions.
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
char * adaptionset_maxframerate_val
Definition: dashdec.c:135
int64_t presentation_timeoffset
Definition: dashdec.c:105
int id
Format-specific stream ID.
Definition: avformat.h:888
static int dash_close(AVFormatContext *s)
Definition: dashdec.c:2238
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5641
uint64_t period_duration
Definition: dashdec.c:157
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4459
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1426
int64_t duration
Definition: movenc.c:63
int64_t first_seq_no
Definition: dashdec.c:98
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:144
AVIOContext pb
Definition: dashdec.c:77
static void finish(void)
Definition: movenc.c:345
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1489
AVProgram * av_new_program(AVFormatContext *s, int id)
Definition: utils.c:4558
struct timeline ** timelines
Definition: dashdec.c:96
#define AVERROR_EOF
End of file.
Definition: error.h:55
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
Definition: format.c:38
uint64_t publish_time
Definition: dashdec.c:151
static void recheck_discard_flags(AVFormatContext *s, struct representation **p, int n)
Definition: dashdec.c:2148
uint64_t availability_start_time
Definition: dashdec.c:149
static enum AVMediaType get_content_type(xmlNodePtr node)
Definition: dashdec.c:565
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:647
struct representation ** audios
Definition: dashdec.c:142
#define INITIAL_BUFFER_SIZE
Definition: dashdec.c:31
char * adaptionset_bitstreamswitching_val
Definition: dashdec.c:137
static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char *nodename)
Definition: dashdec.c:548
static int aligned(int val)
Definition: dashdec.c:178
struct representation ** subtitles
Definition: dashdec.c:144
Callback for checking whether to abort blocking functions.
Definition: avio.h:58
#define ff_const59
The ff_const59 define is not part of the public API and will be removed without further warning...
Definition: avformat.h:549
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2021
#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:1598
char * adaptionset_minbw_val
Definition: dashdec.c:128
uint32_t init_sec_data_len
Definition: dashdec.c:116
static void free_timelines_list(struct representation *pls)
Definition: dashdec.c:347
int64_t starttime
Definition: dashdec.c:57
static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
Definition: dashdec.c:1472
static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
Definition: dashdec.c:1432
#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
static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1380
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1183
char * url
input or output URL.
Definition: avformat.h:1454
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
static int is_common_init_section_exist(struct representation **pls, int n_pls)
Definition: dashdec.c:1986
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: dashdec.c:2313
char * av_strireplace(const char *str, const char *from, const char *to)
Locale-independent strings replace.
Definition: avstring.c:235
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
char * adaptionset_par_val
Definition: dashdec.c:126
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
New fields can be added to the end with minor version bumps.
Definition: avformat.h:1275
#define FFMAX(a, b)
Definition: common.h:94
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:120
char * adaptionset_segmentalignment_val
Definition: dashdec.c:136
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
Definition: mem.c:500
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
uint64_t minimum_update_period
Definition: dashdec.c:152
struct fragment ** fragments
Definition: dashdec.c:93
static void free_representation(struct representation *pls)
Definition: dashdec.c:358
AVIOInterruptCB * interrupt_callback
Definition: dashdec.c:161
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1414
static void free_audio_list(DASHContext *c)
Definition: dashdec.c:388
AVDictionary * opts
Definition: movenc.c:50
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
#define dynarray_add(tab, nb_ptr, elem)
Definition: internal.h:198
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
#define FFMIN(a, b)
Definition: common.h:96
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
static void free_fragment_list(struct representation *pls)
Definition: dashdec.c:336
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:556
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
int32_t
static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
Definition: dashdec.c:1458
static int dash_probe(const AVProbeData *p)
Definition: dashdec.c:2341
int n_subtitles
Definition: dashdec.c:143
static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
Definition: dashdec.c:218
#define s(width, name)
Definition: cbs_vp9.c:257
int is_live
Definition: dashdec.c:160
#define OFFSET(x)
Definition: dashdec.c:2359
static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary *opts, AVDictionary *opts2, int *is_http)
Definition: dashdec.c:410
static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
Definition: dashdec.c:1192
int n
Definition: avisynth_c.h:760
AVDictionary * metadata
Definition: avformat.h:945
#define AVFMT_FLAG_CUSTOM_IO
The caller has supplied a custom AVIOContext, don&#39;t avio_close() it.
Definition: avformat.h:1497
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int save_avio_options(AVFormatContext *s)
Definition: dashdec.c:1832
char * url
Definition: dashdec.c:36
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
Definition: mathematics.c:58
uint64_t period_start
Definition: dashdec.c:158
char * adaptionset_contenttype_val
Definition: dashdec.c:125
char * adaptionset_maxwidth_val
Definition: dashdec.c:131
int64_t max_analyze_duration
Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info().
Definition: avformat.h:1532
static char * get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
Definition: dashdec.c:532
static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **opts)
Definition: dashdec.c:1859
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
Stream structure.
Definition: avformat.h:881
void ff_dash_fill_tmpl_params(char *dst, size_t buffer_size, const char *template, int rep_id, int number, int bit_rate, int64_t time)
Definition: dash.c:96
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVFormatContext * parent
Definition: dashdec.c:79
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrupt a blocking function associated with cb.
Definition: avio.c:664
AVIOContext * pb
I/O context.
Definition: avformat.h:1400
int64_t last_seq_no
Definition: dashdec.c:99
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
uint32_t init_sec_buf_size
Definition: dashdec.c:115
int64_t cur_seq_no
Definition: dashdec.c:107
int max_url_size
Definition: dashdec.c:164
static int copy_init_section(struct representation *rep_dest, struct representation *rep_src)
Definition: dashdec.c:2008
static int dash_read_header(AVFormatContext *s)
Definition: dashdec.c:2024
void * buf
Definition: avisynth_c.h:766
uint64_t time_shift_buffer_depth
Definition: dashdec.c:153
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
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
double value
Definition: eval.c:98
Describe the class of an AVClass context structure.
Definition: log.h:67
static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
Definition: dashdec.c:1680
static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dashdec.c:2174
Rational number (pair of numerator and denominator).
Definition: rational.h:58
static int resolve_content_path(AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes)
Definition: dashdec.c:712
#define AVSEEK_FLAG_BYTE
seeking based on position in bytes
Definition: avformat.h:2512
cl_device_type type
AVMediaType
Definition: avutil.h:199
static struct fragment * get_Fragment(char *range)
Definition: dashdec.c:591
static int parse_manifest_segmenttimeline(AVFormatContext *s, struct representation *rep, xmlNodePtr fragment_timeline_node)
Definition: dashdec.c:676
int avio_open2(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
Definition: aviobuf.c:1177
char id[20]
Definition: dashdec.c:87
AVDictionary * avio_opts
Definition: dashdec.c:163
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4393
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
misc parsing utilities
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
Definition: utils.c:1768
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:93
Round toward -infinity.
Definition: mathematics.h:82
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:473
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVInputFormat ff_dash_demuxer
Definition: dashdec.c:2376
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
Definition: dashdec.c:2248
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
Definition: utils.c:2506
char * adaptionset_lang_val
Definition: dashdec.c:127
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
static int update_init_section(struct representation *pls)
Definition: dashdec.c:1712
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:458
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
char * adaptionset_maxbw_val
Definition: dashdec.c:129
char * adaptionset_minheight_val
Definition: dashdec.c:132
int
char * adaptionset_minframerate_val
Definition: dashdec.c:134
int64_t duration
Definition: dashdec.c:67
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Definition: aviobuf.c:81
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
Definition: utils.c:3567
static const AVClass dash_class
Definition: dashdec.c:2369
static double c[64]
int64_t fragment_duration
Definition: dashdec.c:102
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it...
Definition: dict.c:147
struct fragment * cur_seg
Definition: dashdec.c:110
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1073
static void free_subtitle_list(DASHContext *c)
Definition: dashdec.c:399
int bandwidth
Definition: dashdec.c:88
int den
Denominator.
Definition: rational.h:60
AVFormatContext * ctx
Definition: dashdec.c:80
int rep_count
Definition: dashdec.c:83
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:4431
int64_t fragment_timescale
Definition: dashdec.c:103
static void close_demux_for_component(struct representation *pls)
Definition: dashdec.c:1869
int is_restart_needed
Definition: dashdec.c:119
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
Definition: opt.c:761
#define av_free(p)
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:475
static int parse_manifest_adaptationset(AVFormatContext *s, const char *url, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node)
Definition: dashdec.c:1102
uint8_t * init_sec_buf
Definition: dashdec.c:114
static char * get_content_url(xmlNodePtr *baseurl_nodes, int n_baseurl_nodes, int max_url_size, char *rep_id_val, char *rep_bandwidth_val, char *val)
Definition: dashdec.c:476
AVRational framerate
Definition: dashdec.c:89
void * priv_data
Format private data.
Definition: avformat.h:1386
int64_t start_number
Definition: dashdec.c:100
static uint64_t get_current_time_in_sec(void)
Definition: dashdec.c:183
static int parse_manifest_representation(AVFormatContext *s, const char *url, xmlNodePtr node, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node, xmlNodePtr fragment_template_node, xmlNodePtr content_component_node, xmlNodePtr adaptionset_baseurl_node, xmlNodePtr adaptionset_segmentlist_node, xmlNodePtr adaptionset_supplementalproperty_node)
Definition: dashdec.c:821
char * adaptionset_minwidth_val
Definition: dashdec.c:130
static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1418
int64_t cur_seg_offset
Definition: dashdec.c:108
struct representation ** videos
Definition: dashdec.c:140
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1473
static void free_video_list(DASHContext *c)
Definition: dashdec.c:377
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:766
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:654
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1028
char * url_template
Definition: dashdec.c:76
int is_init_section_common_video
Definition: dashdec.c:167
int stream_index
Definition: avcodec.h:1479
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:910
char * adaptionset_maxheight_val
Definition: dashdec.c:133
static int reopen_demux_for_component(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1879
int64_t repeat
Definition: dashdec.c:63
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:936
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1005
This structure stores compressed data.
Definition: avcodec.h:1454
static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
Definition: dashdec.c:297
char * base_url
Definition: dashdec.c:124
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1470
static int open_demux_for_component(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1953
AVStream * assoc_stream
Definition: dashdec.c:90
static av_cold void cleanup(FlashSV2Context *s)
Definition: flashsv2enc.c:127
static int refresh_manifest(AVFormatContext *s)
Definition: dashdec.c:1490
static uint8_t tmp[11]
Definition: aes_ctr.c:26