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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;
143 
144  /* MediaPresentationDescription Attribute */
149  uint64_t publish_time;
152  uint64_t min_buffer_time;
153 
154  /* Period Attribute */
155  uint64_t period_duration;
156  uint64_t period_start;
157 
158  int is_live;
163 
164  /* Flags for init section*/
167 
168 } DASHContext;
169 
170 static int ishttp(char *url)
171 {
172  const char *proto_name = avio_find_protocol_name(url);
173  return av_strstart(proto_name, "http", NULL);
174 }
175 
176 static int aligned(int val)
177 {
178  return ((val + 0x3F) >> 6) << 6;
179 }
180 
181 static uint64_t get_current_time_in_sec(void)
182 {
183  return av_gettime() / 1000000;
184 }
185 
186 static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char *datetime)
187 {
188  struct tm timeinfo;
189  int year = 0;
190  int month = 0;
191  int day = 0;
192  int hour = 0;
193  int minute = 0;
194  int ret = 0;
195  float second = 0.0;
196 
197  /* ISO-8601 date parser */
198  if (!datetime)
199  return 0;
200 
201  ret = sscanf(datetime, "%d-%d-%dT%d:%d:%fZ", &year, &month, &day, &hour, &minute, &second);
202  /* year, month, day, hour, minute, second 6 arguments */
203  if (ret != 6) {
204  av_log(s, AV_LOG_WARNING, "get_utc_date_time_insec get a wrong time format\n");
205  }
206  timeinfo.tm_year = year - 1900;
207  timeinfo.tm_mon = month - 1;
208  timeinfo.tm_mday = day;
209  timeinfo.tm_hour = hour;
210  timeinfo.tm_min = minute;
211  timeinfo.tm_sec = (int)second;
212 
213  return av_timegm(&timeinfo);
214 }
215 
216 static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
217 {
218  /* ISO-8601 duration parser */
219  uint32_t days = 0;
220  uint32_t hours = 0;
221  uint32_t mins = 0;
222  uint32_t secs = 0;
223  int size = 0;
224  float value = 0;
225  char type = '\0';
226  const char *ptr = duration;
227 
228  while (*ptr) {
229  if (*ptr == 'P' || *ptr == 'T') {
230  ptr++;
231  continue;
232  }
233 
234  if (sscanf(ptr, "%f%c%n", &value, &type, &size) != 2) {
235  av_log(s, AV_LOG_WARNING, "get_duration_insec get a wrong time format\n");
236  return 0; /* parser error */
237  }
238  switch (type) {
239  case 'D':
240  days = (uint32_t)value;
241  break;
242  case 'H':
243  hours = (uint32_t)value;
244  break;
245  case 'M':
246  mins = (uint32_t)value;
247  break;
248  case 'S':
249  secs = (uint32_t)value;
250  break;
251  default:
252  // handle invalid type
253  break;
254  }
255  ptr += size;
256  }
257  return ((days * 24 + hours) * 60 + mins) * 60 + secs;
258 }
259 
260 static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
261 {
262  int64_t start_time = 0;
263  int64_t i = 0;
264  int64_t j = 0;
265  int64_t num = 0;
266 
267  if (pls->n_timelines) {
268  for (i = 0; i < pls->n_timelines; i++) {
269  if (pls->timelines[i]->starttime > 0) {
270  start_time = pls->timelines[i]->starttime;
271  }
272  if (num == cur_seq_no)
273  goto finish;
274 
275  start_time += pls->timelines[i]->duration;
276 
277  if (pls->timelines[i]->repeat == -1) {
278  start_time = pls->timelines[i]->duration * cur_seq_no;
279  goto finish;
280  }
281 
282  for (j = 0; j < pls->timelines[i]->repeat; j++) {
283  num++;
284  if (num == cur_seq_no)
285  goto finish;
286  start_time += pls->timelines[i]->duration;
287  }
288  num++;
289  }
290  }
291 finish:
292  return start_time;
293 }
294 
295 static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
296 {
297  int64_t i = 0;
298  int64_t j = 0;
299  int64_t num = 0;
300  int64_t start_time = 0;
301 
302  for (i = 0; i < pls->n_timelines; i++) {
303  if (pls->timelines[i]->starttime > 0) {
304  start_time = pls->timelines[i]->starttime;
305  }
306  if (start_time > cur_time)
307  goto finish;
308 
309  start_time += pls->timelines[i]->duration;
310  for (j = 0; j < pls->timelines[i]->repeat; j++) {
311  num++;
312  if (start_time > cur_time)
313  goto finish;
314  start_time += pls->timelines[i]->duration;
315  }
316  num++;
317  }
318 
319  return -1;
320 
321 finish:
322  return num;
323 }
324 
325 static void free_fragment(struct fragment **seg)
326 {
327  if (!(*seg)) {
328  return;
329  }
330  av_freep(&(*seg)->url);
331  av_freep(seg);
332 }
333 
334 static void free_fragment_list(struct representation *pls)
335 {
336  int i;
337 
338  for (i = 0; i < pls->n_fragments; i++) {
339  free_fragment(&pls->fragments[i]);
340  }
341  av_freep(&pls->fragments);
342  pls->n_fragments = 0;
343 }
344 
345 static void free_timelines_list(struct representation *pls)
346 {
347  int i;
348 
349  for (i = 0; i < pls->n_timelines; i++) {
350  av_freep(&pls->timelines[i]);
351  }
352  av_freep(&pls->timelines);
353  pls->n_timelines = 0;
354 }
355 
356 static void free_representation(struct representation *pls)
357 {
358  free_fragment_list(pls);
359  free_timelines_list(pls);
360  free_fragment(&pls->cur_seg);
362  av_freep(&pls->init_sec_buf);
363  av_freep(&pls->pb.buffer);
364  if (pls->input)
365  ff_format_io_close(pls->parent, &pls->input);
366  if (pls->ctx) {
367  pls->ctx->pb = NULL;
368  avformat_close_input(&pls->ctx);
369  }
370 
371  av_freep(&pls->url_template);
372  av_freep(&pls);
373 }
374 
376 {
377  int i;
378  for (i = 0; i < c->n_videos; i++) {
379  struct representation *pls = c->videos[i];
380  free_representation(pls);
381  }
382  av_freep(&c->videos);
383  c->n_videos = 0;
384 }
385 
387 {
388  int i;
389  for (i = 0; i < c->n_audios; i++) {
390  struct representation *pls = c->audios[i];
391  free_representation(pls);
392  }
393  av_freep(&c->audios);
394  c->n_audios = 0;
395 }
396 
397 static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
398  AVDictionary *opts, AVDictionary *opts2, int *is_http)
399 {
400  DASHContext *c = s->priv_data;
401  AVDictionary *tmp = NULL;
402  const char *proto_name = NULL;
403  int ret;
404 
405  av_dict_copy(&tmp, opts, 0);
406  av_dict_copy(&tmp, opts2, 0);
407 
408  if (av_strstart(url, "crypto", NULL)) {
409  if (url[6] == '+' || url[6] == ':')
410  proto_name = avio_find_protocol_name(url + 7);
411  }
412 
413  if (!proto_name)
414  proto_name = avio_find_protocol_name(url);
415 
416  if (!proto_name)
417  return AVERROR_INVALIDDATA;
418 
419  // only http(s) & file are allowed
420  if (av_strstart(proto_name, "file", NULL)) {
421  if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
422  av_log(s, AV_LOG_ERROR,
423  "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
424  "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
425  url);
426  return AVERROR_INVALIDDATA;
427  }
428  } else if (av_strstart(proto_name, "http", NULL)) {
429  ;
430  } else
431  return AVERROR_INVALIDDATA;
432 
433  if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
434  ;
435  else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
436  ;
437  else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
438  return AVERROR_INVALIDDATA;
439 
440  av_freep(pb);
441  ret = avio_open2(pb, url, AVIO_FLAG_READ, c->interrupt_callback, &tmp);
442  if (ret >= 0) {
443  // update cookies on http response with setcookies.
444  char *new_cookies = NULL;
445 
446  if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
447  av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
448 
449  if (new_cookies) {
450  av_dict_set(&opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
451  }
452 
453  }
454 
455  av_dict_free(&tmp);
456 
457  if (is_http)
458  *is_http = av_strstart(proto_name, "http", NULL);
459 
460  return ret;
461 }
462 
463 static char *get_content_url(xmlNodePtr *baseurl_nodes,
464  int n_baseurl_nodes,
465  int max_url_size,
466  char *rep_id_val,
467  char *rep_bandwidth_val,
468  char *val)
469 {
470  int i;
471  char *text;
472  char *url = NULL;
473  char *tmp_str = av_mallocz(max_url_size);
474  char *tmp_str_2 = av_mallocz(max_url_size);
475 
476  if (!tmp_str || !tmp_str_2) {
477  return NULL;
478  }
479 
480  for (i = 0; i < n_baseurl_nodes; ++i) {
481  if (baseurl_nodes[i] &&
482  baseurl_nodes[i]->children &&
483  baseurl_nodes[i]->children->type == XML_TEXT_NODE) {
484  text = xmlNodeGetContent(baseurl_nodes[i]->children);
485  if (text) {
486  memset(tmp_str, 0, max_url_size);
487  memset(tmp_str_2, 0, max_url_size);
488  ff_make_absolute_url(tmp_str_2, max_url_size, tmp_str, text);
489  av_strlcpy(tmp_str, tmp_str_2, max_url_size);
490  xmlFree(text);
491  }
492  }
493  }
494 
495  if (val)
496  av_strlcat(tmp_str, (const char*)val, max_url_size);
497 
498  if (rep_id_val) {
499  url = av_strireplace(tmp_str, "$RepresentationID$", (const char*)rep_id_val);
500  if (!url) {
501  goto end;
502  }
503  av_strlcpy(tmp_str, url, max_url_size);
504  }
505  if (rep_bandwidth_val && tmp_str[0] != '\0') {
506  // free any previously assigned url before reassigning
507  av_free(url);
508  url = av_strireplace(tmp_str, "$Bandwidth$", (const char*)rep_bandwidth_val);
509  if (!url) {
510  goto end;
511  }
512  }
513 end:
514  av_free(tmp_str);
515  av_free(tmp_str_2);
516  return url;
517 }
518 
519 static char *get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
520 {
521  int i;
522  char *val;
523 
524  for (i = 0; i < n_nodes; ++i) {
525  if (nodes[i]) {
526  val = xmlGetProp(nodes[i], attrname);
527  if (val)
528  return val;
529  }
530  }
531 
532  return NULL;
533 }
534 
535 static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char *nodename)
536 {
537  xmlNodePtr node = rootnode;
538  if (!node) {
539  return NULL;
540  }
541 
542  node = xmlFirstElementChild(node);
543  while (node) {
544  if (!av_strcasecmp(node->name, nodename)) {
545  return node;
546  }
547  node = xmlNextElementSibling(node);
548  }
549  return NULL;
550 }
551 
552 static enum AVMediaType get_content_type(xmlNodePtr node)
553 {
555  int i = 0;
556  const char *attr;
557  char *val = NULL;
558 
559  if (node) {
560  for (i = 0; i < 2; i++) {
561  attr = i ? "mimeType" : "contentType";
562  val = xmlGetProp(node, attr);
563  if (val) {
564  if (av_stristr((const char *)val, "video")) {
565  type = AVMEDIA_TYPE_VIDEO;
566  } else if (av_stristr((const char *)val, "audio")) {
567  type = AVMEDIA_TYPE_AUDIO;
568  }
569  xmlFree(val);
570  }
571  }
572  }
573  return type;
574 }
575 
576 static struct fragment * get_Fragment(char *range)
577 {
578  struct fragment * seg = av_mallocz(sizeof(struct fragment));
579 
580  if (!seg)
581  return NULL;
582 
583  seg->size = -1;
584  if (range) {
585  char *str_end_offset;
586  char *str_offset = av_strtok(range, "-", &str_end_offset);
587  seg->url_offset = strtoll(str_offset, NULL, 10);
588  seg->size = strtoll(str_end_offset, NULL, 10) - seg->url_offset;
589  }
590 
591  return seg;
592 }
593 
595  xmlNodePtr fragmenturl_node,
596  xmlNodePtr *baseurl_nodes,
597  char *rep_id_val,
598  char *rep_bandwidth_val)
599 {
600  DASHContext *c = s->priv_data;
601  char *initialization_val = NULL;
602  char *media_val = NULL;
603  char *range_val = NULL;
604  int max_url_size = c ? c->max_url_size: MAX_URL_SIZE;
605 
606  if (!av_strcasecmp(fragmenturl_node->name, (const char *)"Initialization")) {
607  initialization_val = xmlGetProp(fragmenturl_node, "sourceURL");
608  range_val = xmlGetProp(fragmenturl_node, "range");
609  if (initialization_val || range_val) {
610  rep->init_section = get_Fragment(range_val);
611  if (!rep->init_section) {
612  xmlFree(initialization_val);
613  xmlFree(range_val);
614  return AVERROR(ENOMEM);
615  }
616  rep->init_section->url = get_content_url(baseurl_nodes, 4,
617  max_url_size,
618  rep_id_val,
619  rep_bandwidth_val,
620  initialization_val);
621 
622  if (!rep->init_section->url) {
623  av_free(rep->init_section);
624  xmlFree(initialization_val);
625  xmlFree(range_val);
626  return AVERROR(ENOMEM);
627  }
628  xmlFree(initialization_val);
629  xmlFree(range_val);
630  }
631  } else if (!av_strcasecmp(fragmenturl_node->name, (const char *)"SegmentURL")) {
632  media_val = xmlGetProp(fragmenturl_node, "media");
633  range_val = xmlGetProp(fragmenturl_node, "mediaRange");
634  if (media_val || range_val) {
635  struct fragment *seg = get_Fragment(range_val);
636  if (!seg) {
637  xmlFree(media_val);
638  xmlFree(range_val);
639  return AVERROR(ENOMEM);
640  }
641  seg->url = get_content_url(baseurl_nodes, 4,
642  max_url_size,
643  rep_id_val,
644  rep_bandwidth_val,
645  media_val);
646  if (!seg->url) {
647  av_free(seg);
648  xmlFree(media_val);
649  xmlFree(range_val);
650  return AVERROR(ENOMEM);
651  }
652  dynarray_add(&rep->fragments, &rep->n_fragments, seg);
653  xmlFree(media_val);
654  xmlFree(range_val);
655  }
656  }
657 
658  return 0;
659 }
660 
662  xmlNodePtr fragment_timeline_node)
663 {
664  xmlAttrPtr attr = NULL;
665  char *val = NULL;
666 
667  if (!av_strcasecmp(fragment_timeline_node->name, (const char *)"S")) {
668  struct timeline *tml = av_mallocz(sizeof(struct timeline));
669  if (!tml) {
670  return AVERROR(ENOMEM);
671  }
672  attr = fragment_timeline_node->properties;
673  while (attr) {
674  val = xmlGetProp(fragment_timeline_node, attr->name);
675 
676  if (!val) {
677  av_log(s, AV_LOG_WARNING, "parse_manifest_segmenttimeline attr->name = %s val is NULL\n", attr->name);
678  continue;
679  }
680 
681  if (!av_strcasecmp(attr->name, (const char *)"t")) {
682  tml->starttime = (int64_t)strtoll(val, NULL, 10);
683  } else if (!av_strcasecmp(attr->name, (const char *)"r")) {
684  tml->repeat =(int64_t) strtoll(val, NULL, 10);
685  } else if (!av_strcasecmp(attr->name, (const char *)"d")) {
686  tml->duration = (int64_t)strtoll(val, NULL, 10);
687  }
688  attr = attr->next;
689  xmlFree(val);
690  }
691  dynarray_add(&rep->timelines, &rep->n_timelines, tml);
692  }
693 
694  return 0;
695 }
696 
697 static int resolve_content_path(AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes) {
698 
699  char *tmp_str = NULL;
700  char *path = NULL;
701  char *mpdName = NULL;
702  xmlNodePtr node = NULL;
703  char *baseurl = NULL;
704  char *root_url = NULL;
705  char *text = NULL;
706  char *tmp = NULL;
707 
708  int isRootHttp = 0;
709  char token ='/';
710  int start = 0;
711  int rootId = 0;
712  int updated = 0;
713  int size = 0;
714  int i;
715  int tmp_max_url_size = strlen(url);
716 
717  for (i = n_baseurl_nodes-1; i >= 0 ; i--) {
718  text = xmlNodeGetContent(baseurl_nodes[i]);
719  if (!text)
720  continue;
721  tmp_max_url_size += strlen(text);
722  if (ishttp(text)) {
723  xmlFree(text);
724  break;
725  }
726  xmlFree(text);
727  }
728 
729  tmp_max_url_size = aligned(tmp_max_url_size);
730  text = av_mallocz(tmp_max_url_size);
731  if (!text) {
732  updated = AVERROR(ENOMEM);
733  goto end;
734  }
735  av_strlcpy(text, url, strlen(url)+1);
736  tmp = text;
737  while (mpdName = av_strtok(tmp, "/", &tmp)) {
738  size = strlen(mpdName);
739  }
740  av_free(text);
741 
742  path = av_mallocz(tmp_max_url_size);
743  tmp_str = av_mallocz(tmp_max_url_size);
744  if (!tmp_str || !path) {
745  updated = AVERROR(ENOMEM);
746  goto end;
747  }
748 
749  av_strlcpy (path, url, strlen(url) - size + 1);
750  for (rootId = n_baseurl_nodes - 1; rootId > 0; rootId --) {
751  if (!(node = baseurl_nodes[rootId])) {
752  continue;
753  }
754  text = xmlNodeGetContent(node);
755  if (ishttp(text)) {
756  xmlFree(text);
757  break;
758  }
759  xmlFree(text);
760  }
761 
762  node = baseurl_nodes[rootId];
763  baseurl = xmlNodeGetContent(node);
764  root_url = (av_strcasecmp(baseurl, "")) ? baseurl : path;
765  if (node) {
766  xmlNodeSetContent(node, root_url);
767  updated = 1;
768  }
769 
770  size = strlen(root_url);
771  isRootHttp = ishttp(root_url);
772 
773  if (root_url[size - 1] != token) {
774  av_strlcat(root_url, "/", size + 2);
775  size += 2;
776  }
777 
778  for (i = 0; i < n_baseurl_nodes; ++i) {
779  if (i == rootId) {
780  continue;
781  }
782  text = xmlNodeGetContent(baseurl_nodes[i]);
783  if (text) {
784  memset(tmp_str, 0, strlen(tmp_str));
785  if (!ishttp(text) && isRootHttp) {
786  av_strlcpy(tmp_str, root_url, size + 1);
787  }
788  start = (text[0] == token);
789  av_strlcat(tmp_str, text + start, tmp_max_url_size);
790  xmlNodeSetContent(baseurl_nodes[i], tmp_str);
791  updated = 1;
792  xmlFree(text);
793  }
794  }
795 
796 end:
797  if (tmp_max_url_size > *max_url_size) {
798  *max_url_size = tmp_max_url_size;
799  }
800  av_free(path);
801  av_free(tmp_str);
802  xmlFree(baseurl);
803  return updated;
804 
805 }
806 
807 static int parse_manifest_representation(AVFormatContext *s, const char *url,
808  xmlNodePtr node,
809  xmlNodePtr adaptionset_node,
810  xmlNodePtr mpd_baseurl_node,
811  xmlNodePtr period_baseurl_node,
812  xmlNodePtr period_segmenttemplate_node,
813  xmlNodePtr period_segmentlist_node,
814  xmlNodePtr fragment_template_node,
815  xmlNodePtr content_component_node,
816  xmlNodePtr adaptionset_baseurl_node,
817  xmlNodePtr adaptionset_segmentlist_node,
818  xmlNodePtr adaptionset_supplementalproperty_node)
819 {
820  int32_t ret = 0;
821  int32_t audio_rep_idx = 0;
822  int32_t video_rep_idx = 0;
823  DASHContext *c = s->priv_data;
824  struct representation *rep = NULL;
825  struct fragment *seg = NULL;
826  xmlNodePtr representation_segmenttemplate_node = NULL;
827  xmlNodePtr representation_baseurl_node = NULL;
828  xmlNodePtr representation_segmentlist_node = NULL;
829  xmlNodePtr segmentlists_tab[2];
830  xmlNodePtr fragment_timeline_node = NULL;
831  xmlNodePtr fragment_templates_tab[5];
832  char *duration_val = NULL;
833  char *presentation_timeoffset_val = NULL;
834  char *startnumber_val = NULL;
835  char *timescale_val = NULL;
836  char *initialization_val = NULL;
837  char *media_val = NULL;
838  char *val = NULL;
839  xmlNodePtr baseurl_nodes[4];
840  xmlNodePtr representation_node = node;
841  char *rep_id_val = xmlGetProp(representation_node, "id");
842  char *rep_bandwidth_val = xmlGetProp(representation_node, "bandwidth");
843  char *rep_framerate_val = xmlGetProp(representation_node, "frameRate");
845 
846  // try get information from representation
847  if (type == AVMEDIA_TYPE_UNKNOWN)
848  type = get_content_type(representation_node);
849  // try get information from contentComponen
850  if (type == AVMEDIA_TYPE_UNKNOWN)
851  type = get_content_type(content_component_node);
852  // try get information from adaption set
853  if (type == AVMEDIA_TYPE_UNKNOWN)
854  type = get_content_type(adaptionset_node);
855  if (type == AVMEDIA_TYPE_UNKNOWN) {
856  av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported representation type\n", url);
857  } else if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) {
858  // convert selected representation to our internal struct
859  rep = av_mallocz(sizeof(struct representation));
860  if (!rep) {
861  ret = AVERROR(ENOMEM);
862  goto end;
863  }
864  representation_segmenttemplate_node = find_child_node_by_name(representation_node, "SegmentTemplate");
865  representation_baseurl_node = find_child_node_by_name(representation_node, "BaseURL");
866  representation_segmentlist_node = find_child_node_by_name(representation_node, "SegmentList");
867 
868  baseurl_nodes[0] = mpd_baseurl_node;
869  baseurl_nodes[1] = period_baseurl_node;
870  baseurl_nodes[2] = adaptionset_baseurl_node;
871  baseurl_nodes[3] = representation_baseurl_node;
872 
873  ret = resolve_content_path(s, url, &c->max_url_size, baseurl_nodes, 4);
875  + (rep_id_val ? strlen(rep_id_val) : 0)
876  + (rep_bandwidth_val ? strlen(rep_bandwidth_val) : 0));
877  if (ret == AVERROR(ENOMEM) || ret == 0) {
878  goto end;
879  }
880  if (representation_segmenttemplate_node || fragment_template_node || period_segmenttemplate_node) {
881  fragment_timeline_node = NULL;
882  fragment_templates_tab[0] = representation_segmenttemplate_node;
883  fragment_templates_tab[1] = adaptionset_segmentlist_node;
884  fragment_templates_tab[2] = fragment_template_node;
885  fragment_templates_tab[3] = period_segmenttemplate_node;
886  fragment_templates_tab[4] = period_segmentlist_node;
887 
888  presentation_timeoffset_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "presentationTimeOffset");
889  duration_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "duration");
890  startnumber_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "startNumber");
891  timescale_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "timescale");
892  initialization_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "initialization");
893  media_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "media");
894 
895  if (initialization_val) {
896  rep->init_section = av_mallocz(sizeof(struct fragment));
897  if (!rep->init_section) {
898  av_free(rep);
899  ret = AVERROR(ENOMEM);
900  goto end;
901  }
902  c->max_url_size = aligned(c->max_url_size + strlen(initialization_val));
903  rep->init_section->url = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, initialization_val);
904  if (!rep->init_section->url) {
905  av_free(rep->init_section);
906  av_free(rep);
907  ret = AVERROR(ENOMEM);
908  goto end;
909  }
910  rep->init_section->size = -1;
911  xmlFree(initialization_val);
912  }
913 
914  if (media_val) {
915  c->max_url_size = aligned(c->max_url_size + strlen(media_val));
916  rep->url_template = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, media_val);
917  xmlFree(media_val);
918  }
919 
920  if (presentation_timeoffset_val) {
921  rep->presentation_timeoffset = (int64_t) strtoll(presentation_timeoffset_val, NULL, 10);
922  av_log(s, AV_LOG_TRACE, "rep->presentation_timeoffset = [%"PRId64"]\n", rep->presentation_timeoffset);
923  xmlFree(presentation_timeoffset_val);
924  }
925  if (duration_val) {
926  rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
927  av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
928  xmlFree(duration_val);
929  }
930  if (timescale_val) {
931  rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
932  av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
933  xmlFree(timescale_val);
934  }
935  if (startnumber_val) {
936  rep->first_seq_no = (int64_t) strtoll(startnumber_val, NULL, 10);
937  av_log(s, AV_LOG_TRACE, "rep->first_seq_no = [%"PRId64"]\n", rep->first_seq_no);
938  xmlFree(startnumber_val);
939  }
940  if (adaptionset_supplementalproperty_node) {
941  if (!av_strcasecmp(xmlGetProp(adaptionset_supplementalproperty_node,"schemeIdUri"), "http://dashif.org/guidelines/last-segment-number")) {
942  val = xmlGetProp(adaptionset_supplementalproperty_node,"value");
943  if (!val) {
944  av_log(s, AV_LOG_ERROR, "Missing value attribute in adaptionset_supplementalproperty_node\n");
945  } else {
946  rep->last_seq_no =(int64_t) strtoll(val, NULL, 10) - 1;
947  xmlFree(val);
948  }
949  }
950  }
951 
952  fragment_timeline_node = find_child_node_by_name(representation_segmenttemplate_node, "SegmentTimeline");
953 
954  if (!fragment_timeline_node)
955  fragment_timeline_node = find_child_node_by_name(fragment_template_node, "SegmentTimeline");
956  if (!fragment_timeline_node)
957  fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
958  if (!fragment_timeline_node)
959  fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
960  if (fragment_timeline_node) {
961  fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
962  while (fragment_timeline_node) {
963  ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
964  if (ret < 0) {
965  return ret;
966  }
967  fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
968  }
969  }
970  } else if (representation_baseurl_node && !representation_segmentlist_node) {
971  seg = av_mallocz(sizeof(struct fragment));
972  if (!seg) {
973  ret = AVERROR(ENOMEM);
974  goto end;
975  }
976  seg->url = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, NULL);
977  if (!seg->url) {
978  av_free(seg);
979  ret = AVERROR(ENOMEM);
980  goto end;
981  }
982  seg->size = -1;
983  dynarray_add(&rep->fragments, &rep->n_fragments, seg);
984  } else if (representation_segmentlist_node) {
985  // TODO: https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html
986  // http://www-itec.uni-klu.ac.at/dash/ddash/mpdGenerator.php?fragmentlength=15&type=full
987  xmlNodePtr fragmenturl_node = NULL;
988  segmentlists_tab[0] = representation_segmentlist_node;
989  segmentlists_tab[1] = adaptionset_segmentlist_node;
990 
991  duration_val = get_val_from_nodes_tab(segmentlists_tab, 2, "duration");
992  timescale_val = get_val_from_nodes_tab(segmentlists_tab, 2, "timescale");
993  if (duration_val) {
994  rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
995  av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
996  xmlFree(duration_val);
997  }
998  if (timescale_val) {
999  rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
1000  av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
1001  xmlFree(timescale_val);
1002  }
1003  fragmenturl_node = xmlFirstElementChild(representation_segmentlist_node);
1004  while (fragmenturl_node) {
1005  ret = parse_manifest_segmenturlnode(s, rep, fragmenturl_node,
1006  baseurl_nodes,
1007  rep_id_val,
1008  rep_bandwidth_val);
1009  if (ret < 0) {
1010  return ret;
1011  }
1012  fragmenturl_node = xmlNextElementSibling(fragmenturl_node);
1013  }
1014 
1015  fragment_timeline_node = find_child_node_by_name(representation_segmenttemplate_node, "SegmentTimeline");
1016 
1017  if (!fragment_timeline_node)
1018  fragment_timeline_node = find_child_node_by_name(fragment_template_node, "SegmentTimeline");
1019  if (!fragment_timeline_node)
1020  fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
1021  if (!fragment_timeline_node)
1022  fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
1023  if (fragment_timeline_node) {
1024  fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
1025  while (fragment_timeline_node) {
1026  ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
1027  if (ret < 0) {
1028  return ret;
1029  }
1030  fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
1031  }
1032  }
1033  } else {
1034  free_representation(rep);
1035  rep = NULL;
1036  av_log(s, AV_LOG_ERROR, "Unknown format of Representation node id[%s] \n", (const char *)rep_id_val);
1037  }
1038 
1039  if (rep) {
1040  if (rep->fragment_duration > 0 && !rep->fragment_timescale)
1041  rep->fragment_timescale = 1;
1042  rep->bandwidth = rep_bandwidth_val ? atoi(rep_bandwidth_val) : 0;
1043  strncpy(rep->id, rep_id_val ? rep_id_val : "", sizeof(rep->id));
1044  rep->framerate = av_make_q(0, 0);
1045  if (type == AVMEDIA_TYPE_VIDEO && rep_framerate_val) {
1046  ret = av_parse_video_rate(&rep->framerate, rep_framerate_val);
1047  if (ret < 0)
1048  av_log(s, AV_LOG_VERBOSE, "Ignoring invalid frame rate '%s'\n", rep_framerate_val);
1049  }
1050 
1051  if (type == AVMEDIA_TYPE_VIDEO) {
1052  rep->rep_idx = video_rep_idx;
1053  dynarray_add(&c->videos, &c->n_videos, rep);
1054  } else {
1055  rep->rep_idx = audio_rep_idx;
1056  dynarray_add(&c->audios, &c->n_audios, rep);
1057  }
1058  }
1059  }
1060 
1061  video_rep_idx += type == AVMEDIA_TYPE_VIDEO;
1062  audio_rep_idx += type == AVMEDIA_TYPE_AUDIO;
1063 
1064 end:
1065  if (rep_id_val)
1066  xmlFree(rep_id_val);
1067  if (rep_bandwidth_val)
1068  xmlFree(rep_bandwidth_val);
1069  if (rep_framerate_val)
1070  xmlFree(rep_framerate_val);
1071 
1072  return ret;
1073 }
1074 
1076  xmlNodePtr adaptionset_node,
1077  xmlNodePtr mpd_baseurl_node,
1078  xmlNodePtr period_baseurl_node,
1079  xmlNodePtr period_segmenttemplate_node,
1080  xmlNodePtr period_segmentlist_node)
1081 {
1082  int ret = 0;
1083  DASHContext *c = s->priv_data;
1084  xmlNodePtr fragment_template_node = NULL;
1085  xmlNodePtr content_component_node = NULL;
1086  xmlNodePtr adaptionset_baseurl_node = NULL;
1087  xmlNodePtr adaptionset_segmentlist_node = NULL;
1088  xmlNodePtr adaptionset_supplementalproperty_node = NULL;
1089  xmlNodePtr node = NULL;
1090  c->adaptionset_contenttype_val = xmlGetProp(adaptionset_node, "contentType");
1091  c->adaptionset_par_val = xmlGetProp(adaptionset_node, "par");
1092  c->adaptionset_lang_val = xmlGetProp(adaptionset_node, "lang");
1093  c->adaptionset_minbw_val = xmlGetProp(adaptionset_node, "minBandwidth");
1094  c->adaptionset_maxbw_val = xmlGetProp(adaptionset_node, "maxBandwidth");
1095  c->adaptionset_minwidth_val = xmlGetProp(adaptionset_node, "minWidth");
1096  c->adaptionset_maxwidth_val = xmlGetProp(adaptionset_node, "maxWidth");
1097  c->adaptionset_minheight_val = xmlGetProp(adaptionset_node, "minHeight");
1098  c->adaptionset_maxheight_val = xmlGetProp(adaptionset_node, "maxHeight");
1099  c->adaptionset_minframerate_val = xmlGetProp(adaptionset_node, "minFrameRate");
1100  c->adaptionset_maxframerate_val = xmlGetProp(adaptionset_node, "maxFrameRate");
1101  c->adaptionset_segmentalignment_val = xmlGetProp(adaptionset_node, "segmentAlignment");
1102  c->adaptionset_bitstreamswitching_val = xmlGetProp(adaptionset_node, "bitstreamSwitching");
1103 
1104  node = xmlFirstElementChild(adaptionset_node);
1105  while (node) {
1106  if (!av_strcasecmp(node->name, (const char *)"SegmentTemplate")) {
1107  fragment_template_node = node;
1108  } else if (!av_strcasecmp(node->name, (const char *)"ContentComponent")) {
1109  content_component_node = node;
1110  } else if (!av_strcasecmp(node->name, (const char *)"BaseURL")) {
1111  adaptionset_baseurl_node = node;
1112  } else if (!av_strcasecmp(node->name, (const char *)"SegmentList")) {
1113  adaptionset_segmentlist_node = node;
1114  } else if (!av_strcasecmp(node->name, (const char *)"SupplementalProperty")) {
1115  adaptionset_supplementalproperty_node = node;
1116  } else if (!av_strcasecmp(node->name, (const char *)"Representation")) {
1117  ret = parse_manifest_representation(s, url, node,
1118  adaptionset_node,
1119  mpd_baseurl_node,
1120  period_baseurl_node,
1121  period_segmenttemplate_node,
1122  period_segmentlist_node,
1123  fragment_template_node,
1124  content_component_node,
1125  adaptionset_baseurl_node,
1126  adaptionset_segmentlist_node,
1127  adaptionset_supplementalproperty_node);
1128  if (ret < 0) {
1129  return ret;
1130  }
1131  }
1132  node = xmlNextElementSibling(node);
1133  }
1134  return 0;
1135 }
1136 
1137 static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
1138 {
1139  DASHContext *c = s->priv_data;
1140  int ret = 0;
1141  int close_in = 0;
1142  uint8_t *new_url = NULL;
1143  int64_t filesize = 0;
1144  char *buffer = NULL;
1145  AVDictionary *opts = NULL;
1146  xmlDoc *doc = NULL;
1147  xmlNodePtr root_element = NULL;
1148  xmlNodePtr node = NULL;
1149  xmlNodePtr period_node = NULL;
1150  xmlNodePtr tmp_node = NULL;
1151  xmlNodePtr mpd_baseurl_node = NULL;
1152  xmlNodePtr period_baseurl_node = NULL;
1153  xmlNodePtr period_segmenttemplate_node = NULL;
1154  xmlNodePtr period_segmentlist_node = NULL;
1155  xmlNodePtr adaptionset_node = NULL;
1156  xmlAttrPtr attr = NULL;
1157  char *val = NULL;
1158  uint32_t period_duration_sec = 0;
1159  uint32_t period_start_sec = 0;
1160 
1161  if (!in) {
1162  close_in = 1;
1163 
1164  av_dict_copy(&opts, c->avio_opts, 0);
1165  ret = avio_open2(&in, url, AVIO_FLAG_READ, c->interrupt_callback, &opts);
1166  av_dict_free(&opts);
1167  if (ret < 0)
1168  return ret;
1169  }
1170 
1171  if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0) {
1172  c->base_url = av_strdup(new_url);
1173  } else {
1174  c->base_url = av_strdup(url);
1175  }
1176 
1177  filesize = avio_size(in);
1178  if (filesize <= 0) {
1179  filesize = 8 * 1024;
1180  }
1181 
1182  buffer = av_mallocz(filesize);
1183  if (!buffer) {
1184  av_free(c->base_url);
1185  return AVERROR(ENOMEM);
1186  }
1187 
1188  filesize = avio_read(in, buffer, filesize);
1189  if (filesize <= 0) {
1190  av_log(s, AV_LOG_ERROR, "Unable to read to offset '%s'\n", url);
1191  ret = AVERROR_INVALIDDATA;
1192  } else {
1193  LIBXML_TEST_VERSION
1194 
1195  doc = xmlReadMemory(buffer, filesize, c->base_url, NULL, 0);
1196  root_element = xmlDocGetRootElement(doc);
1197  node = root_element;
1198 
1199  if (!node) {
1200  ret = AVERROR_INVALIDDATA;
1201  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing root node\n", url);
1202  goto cleanup;
1203  }
1204 
1205  if (node->type != XML_ELEMENT_NODE ||
1206  av_strcasecmp(node->name, (const char *)"MPD")) {
1207  ret = AVERROR_INVALIDDATA;
1208  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - wrong root node name[%s] type[%d]\n", url, node->name, (int)node->type);
1209  goto cleanup;
1210  }
1211 
1212  val = xmlGetProp(node, "type");
1213  if (!val) {
1214  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing type attrib\n", url);
1215  ret = AVERROR_INVALIDDATA;
1216  goto cleanup;
1217  }
1218  if (!av_strcasecmp(val, (const char *)"dynamic"))
1219  c->is_live = 1;
1220  xmlFree(val);
1221 
1222  attr = node->properties;
1223  while (attr) {
1224  val = xmlGetProp(node, attr->name);
1225 
1226  if (!av_strcasecmp(attr->name, (const char *)"availabilityStartTime")) {
1227  c->availability_start_time = get_utc_date_time_insec(s, (const char *)val);
1228  av_log(s, AV_LOG_TRACE, "c->availability_start_time = [%"PRId64"]\n", c->availability_start_time);
1229  } else if (!av_strcasecmp(attr->name, (const char *)"availabilityEndTime")) {
1230  c->availability_end_time = get_utc_date_time_insec(s, (const char *)val);
1231  av_log(s, AV_LOG_TRACE, "c->availability_end_time = [%"PRId64"]\n", c->availability_end_time);
1232  } else if (!av_strcasecmp(attr->name, (const char *)"publishTime")) {
1233  c->publish_time = get_utc_date_time_insec(s, (const char *)val);
1234  av_log(s, AV_LOG_TRACE, "c->publish_time = [%"PRId64"]\n", c->publish_time);
1235  } else if (!av_strcasecmp(attr->name, (const char *)"minimumUpdatePeriod")) {
1236  c->minimum_update_period = get_duration_insec(s, (const char *)val);
1237  av_log(s, AV_LOG_TRACE, "c->minimum_update_period = [%"PRId64"]\n", c->minimum_update_period);
1238  } else if (!av_strcasecmp(attr->name, (const char *)"timeShiftBufferDepth")) {
1239  c->time_shift_buffer_depth = get_duration_insec(s, (const char *)val);
1240  av_log(s, AV_LOG_TRACE, "c->time_shift_buffer_depth = [%"PRId64"]\n", c->time_shift_buffer_depth);
1241  } else if (!av_strcasecmp(attr->name, (const char *)"minBufferTime")) {
1242  c->min_buffer_time = get_duration_insec(s, (const char *)val);
1243  av_log(s, AV_LOG_TRACE, "c->min_buffer_time = [%"PRId64"]\n", c->min_buffer_time);
1244  } else if (!av_strcasecmp(attr->name, (const char *)"suggestedPresentationDelay")) {
1245  c->suggested_presentation_delay = get_duration_insec(s, (const char *)val);
1246  av_log(s, AV_LOG_TRACE, "c->suggested_presentation_delay = [%"PRId64"]\n", c->suggested_presentation_delay);
1247  } else if (!av_strcasecmp(attr->name, (const char *)"mediaPresentationDuration")) {
1248  c->media_presentation_duration = get_duration_insec(s, (const char *)val);
1249  av_log(s, AV_LOG_TRACE, "c->media_presentation_duration = [%"PRId64"]\n", c->media_presentation_duration);
1250  }
1251  attr = attr->next;
1252  xmlFree(val);
1253  }
1254 
1255  tmp_node = find_child_node_by_name(node, "BaseURL");
1256  if (tmp_node) {
1257  mpd_baseurl_node = xmlCopyNode(tmp_node,1);
1258  } else {
1259  mpd_baseurl_node = xmlNewNode(NULL, "BaseURL");
1260  }
1261 
1262  // at now we can handle only one period, with the longest duration
1263  node = xmlFirstElementChild(node);
1264  while (node) {
1265  if (!av_strcasecmp(node->name, (const char *)"Period")) {
1266  period_duration_sec = 0;
1267  period_start_sec = 0;
1268  attr = node->properties;
1269  while (attr) {
1270  val = xmlGetProp(node, attr->name);
1271  if (!av_strcasecmp(attr->name, (const char *)"duration")) {
1272  period_duration_sec = get_duration_insec(s, (const char *)val);
1273  } else if (!av_strcasecmp(attr->name, (const char *)"start")) {
1274  period_start_sec = get_duration_insec(s, (const char *)val);
1275  }
1276  attr = attr->next;
1277  xmlFree(val);
1278  }
1279  if ((period_duration_sec) >= (c->period_duration)) {
1280  period_node = node;
1281  c->period_duration = period_duration_sec;
1282  c->period_start = period_start_sec;
1283  if (c->period_start > 0)
1285  }
1286  }
1287  node = xmlNextElementSibling(node);
1288  }
1289  if (!period_node) {
1290  av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing Period node\n", url);
1291  ret = AVERROR_INVALIDDATA;
1292  goto cleanup;
1293  }
1294 
1295  adaptionset_node = xmlFirstElementChild(period_node);
1296  while (adaptionset_node) {
1297  if (!av_strcasecmp(adaptionset_node->name, (const char *)"BaseURL")) {
1298  period_baseurl_node = adaptionset_node;
1299  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentTemplate")) {
1300  period_segmenttemplate_node = adaptionset_node;
1301  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentList")) {
1302  period_segmentlist_node = adaptionset_node;
1303  } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"AdaptationSet")) {
1304  parse_manifest_adaptationset(s, url, adaptionset_node, mpd_baseurl_node, period_baseurl_node, period_segmenttemplate_node, period_segmentlist_node);
1305  }
1306  adaptionset_node = xmlNextElementSibling(adaptionset_node);
1307  }
1308 cleanup:
1309  /*free the document */
1310  xmlFreeDoc(doc);
1311  xmlCleanupParser();
1312  xmlFreeNode(mpd_baseurl_node);
1313  }
1314 
1315  av_free(new_url);
1316  av_free(buffer);
1317  if (close_in) {
1318  avio_close(in);
1319  }
1320  return ret;
1321 }
1322 
1323 static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
1324 {
1325  DASHContext *c = s->priv_data;
1326  int64_t num = 0;
1327  int64_t start_time_offset = 0;
1328 
1329  if (c->is_live) {
1330  if (pls->n_fragments) {
1331  av_log(s, AV_LOG_TRACE, "in n_fragments mode\n");
1332  num = pls->first_seq_no;
1333  } else if (pls->n_timelines) {
1334  av_log(s, AV_LOG_TRACE, "in n_timelines mode\n");
1335  start_time_offset = get_segment_start_time_based_on_timeline(pls, 0xFFFFFFFF) - 60 * pls->fragment_timescale; // 60 seconds before end
1336  num = calc_next_seg_no_from_timelines(pls, start_time_offset);
1337  if (num == -1)
1338  num = pls->first_seq_no;
1339  else
1340  num += pls->first_seq_no;
1341  } else if (pls->fragment_duration){
1342  av_log(s, AV_LOG_TRACE, "in fragment_duration mode fragment_timescale = %"PRId64", presentation_timeoffset = %"PRId64"\n", pls->fragment_timescale, pls->presentation_timeoffset);
1343  if (pls->presentation_timeoffset) {
1345  } else if (c->publish_time > 0 && !c->availability_start_time) {
1346  if (c->min_buffer_time) {
1348  } else {
1350  }
1351  } else {
1353  }
1354  }
1355  } else {
1356  num = pls->first_seq_no;
1357  }
1358  return num;
1359 }
1360 
1361 static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
1362 {
1363  DASHContext *c = s->priv_data;
1364  int64_t num = 0;
1365 
1366  if (c->is_live && pls->fragment_duration) {
1367  av_log(s, AV_LOG_TRACE, "in live mode\n");
1369  } else {
1370  num = pls->first_seq_no;
1371  }
1372  return num;
1373 }
1374 
1375 static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
1376 {
1377  int64_t num = 0;
1378 
1379  if (pls->n_fragments) {
1380  num = pls->first_seq_no + pls->n_fragments - 1;
1381  } else if (pls->n_timelines) {
1382  int i = 0;
1383  num = pls->first_seq_no + pls->n_timelines - 1;
1384  for (i = 0; i < pls->n_timelines; i++) {
1385  if (pls->timelines[i]->repeat == -1) {
1386  int length_of_each_segment = pls->timelines[i]->duration / pls->fragment_timescale;
1387  num = c->period_duration / length_of_each_segment;
1388  } else {
1389  num += pls->timelines[i]->repeat;
1390  }
1391  }
1392  } else if (c->is_live && pls->fragment_duration) {
1394  } else if (pls->fragment_duration) {
1396  }
1397 
1398  return num;
1399 }
1400 
1401 static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
1402 {
1403  if (rep_dest && rep_src ) {
1404  free_timelines_list(rep_dest);
1405  rep_dest->timelines = rep_src->timelines;
1406  rep_dest->n_timelines = rep_src->n_timelines;
1407  rep_dest->first_seq_no = rep_src->first_seq_no;
1408  rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
1409  rep_src->timelines = NULL;
1410  rep_src->n_timelines = 0;
1411  rep_dest->cur_seq_no = rep_src->cur_seq_no;
1412  }
1413 }
1414 
1415 static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
1416 {
1417  if (rep_dest && rep_src ) {
1418  free_fragment_list(rep_dest);
1419  if (rep_src->start_number > (rep_dest->start_number + rep_dest->n_fragments))
1420  rep_dest->cur_seq_no = 0;
1421  else
1422  rep_dest->cur_seq_no += rep_src->start_number - rep_dest->start_number;
1423  rep_dest->fragments = rep_src->fragments;
1424  rep_dest->n_fragments = rep_src->n_fragments;
1425  rep_dest->parent = rep_src->parent;
1426  rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
1427  rep_src->fragments = NULL;
1428  rep_src->n_fragments = 0;
1429  }
1430 }
1431 
1432 
1434 {
1435 
1436  int ret = 0, i;
1437  DASHContext *c = s->priv_data;
1438 
1439  // save current context
1440  int n_videos = c->n_videos;
1441  struct representation **videos = c->videos;
1442  int n_audios = c->n_audios;
1443  struct representation **audios = c->audios;
1444  char *base_url = c->base_url;
1445 
1446  c->base_url = NULL;
1447  c->n_videos = 0;
1448  c->videos = NULL;
1449  c->n_audios = 0;
1450  c->audios = NULL;
1451  ret = parse_manifest(s, s->url, NULL);
1452  if (ret)
1453  goto finish;
1454 
1455  if (c->n_videos != n_videos) {
1456  av_log(c, AV_LOG_ERROR,
1457  "new manifest has mismatched no. of video representations, %d -> %d\n",
1458  n_videos, c->n_videos);
1459  return AVERROR_INVALIDDATA;
1460  }
1461  if (c->n_audios != n_audios) {
1462  av_log(c, AV_LOG_ERROR,
1463  "new manifest has mismatched no. of audio representations, %d -> %d\n",
1464  n_audios, c->n_audios);
1465  return AVERROR_INVALIDDATA;
1466  }
1467 
1468  for (i = 0; i < n_videos; i++) {
1469  struct representation *cur_video = videos[i];
1470  struct representation *ccur_video = c->videos[i];
1471  if (cur_video->timelines) {
1472  // calc current time
1473  int64_t currentTime = get_segment_start_time_based_on_timeline(cur_video, cur_video->cur_seq_no) / cur_video->fragment_timescale;
1474  // update segments
1475  ccur_video->cur_seq_no = calc_next_seg_no_from_timelines(ccur_video, currentTime * cur_video->fragment_timescale - 1);
1476  if (ccur_video->cur_seq_no >= 0) {
1477  move_timelines(ccur_video, cur_video, c);
1478  }
1479  }
1480  if (cur_video->fragments) {
1481  move_segments(ccur_video, cur_video, c);
1482  }
1483  }
1484  for (i = 0; i < n_audios; i++) {
1485  struct representation *cur_audio = audios[i];
1486  struct representation *ccur_audio = c->audios[i];
1487  if (cur_audio->timelines) {
1488  // calc current time
1489  int64_t currentTime = get_segment_start_time_based_on_timeline(cur_audio, cur_audio->cur_seq_no) / cur_audio->fragment_timescale;
1490  // update segments
1491  ccur_audio->cur_seq_no = calc_next_seg_no_from_timelines(ccur_audio, currentTime * cur_audio->fragment_timescale - 1);
1492  if (ccur_audio->cur_seq_no >= 0) {
1493  move_timelines(ccur_audio, cur_audio, c);
1494  }
1495  }
1496  if (cur_audio->fragments) {
1497  move_segments(ccur_audio, cur_audio, c);
1498  }
1499  }
1500 
1501 finish:
1502  // restore context
1503  if (c->base_url)
1504  av_free(base_url);
1505  else
1506  c->base_url = base_url;
1507  if (c->audios)
1508  free_audio_list(c);
1509  if (c->videos)
1510  free_video_list(c);
1511  c->n_audios = n_audios;
1512  c->audios = audios;
1513  c->n_videos = n_videos;
1514  c->videos = videos;
1515  return ret;
1516 }
1517 
1518 static struct fragment *get_current_fragment(struct representation *pls)
1519 {
1520  int64_t min_seq_no = 0;
1521  int64_t max_seq_no = 0;
1522  struct fragment *seg = NULL;
1523  struct fragment *seg_ptr = NULL;
1524  DASHContext *c = pls->parent->priv_data;
1525 
1526  while (( !ff_check_interrupt(c->interrupt_callback)&& pls->n_fragments > 0)) {
1527  if (pls->cur_seq_no < pls->n_fragments) {
1528  seg_ptr = pls->fragments[pls->cur_seq_no];
1529  seg = av_mallocz(sizeof(struct fragment));
1530  if (!seg) {
1531  return NULL;
1532  }
1533  seg->url = av_strdup(seg_ptr->url);
1534  if (!seg->url) {
1535  av_free(seg);
1536  return NULL;
1537  }
1538  seg->size = seg_ptr->size;
1539  seg->url_offset = seg_ptr->url_offset;
1540  return seg;
1541  } else if (c->is_live) {
1542  refresh_manifest(pls->parent);
1543  } else {
1544  break;
1545  }
1546  }
1547  if (c->is_live) {
1548  min_seq_no = calc_min_seg_no(pls->parent, pls);
1549  max_seq_no = calc_max_seg_no(pls, c);
1550 
1551  if (pls->timelines || pls->fragments) {
1552  refresh_manifest(pls->parent);
1553  }
1554  if (pls->cur_seq_no <= min_seq_no) {
1555  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);
1556  pls->cur_seq_no = calc_cur_seg_no(pls->parent, pls);
1557  } else if (pls->cur_seq_no > max_seq_no) {
1558  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);
1559  }
1560  seg = av_mallocz(sizeof(struct fragment));
1561  if (!seg) {
1562  return NULL;
1563  }
1564  } else if (pls->cur_seq_no <= pls->last_seq_no) {
1565  seg = av_mallocz(sizeof(struct fragment));
1566  if (!seg) {
1567  return NULL;
1568  }
1569  }
1570  if (seg) {
1571  char *tmpfilename= av_mallocz(c->max_url_size);
1572  if (!tmpfilename) {
1573  return NULL;
1574  }
1576  seg->url = av_strireplace(pls->url_template, pls->url_template, tmpfilename);
1577  if (!seg->url) {
1578  av_log(pls->parent, AV_LOG_WARNING, "Unable to resolve template url '%s', try to use origin template\n", pls->url_template);
1579  seg->url = av_strdup(pls->url_template);
1580  if (!seg->url) {
1581  av_log(pls->parent, AV_LOG_ERROR, "Cannot resolve template url '%s'\n", pls->url_template);
1582  av_free(tmpfilename);
1583  return NULL;
1584  }
1585  }
1586  av_free(tmpfilename);
1587  seg->size = -1;
1588  }
1589 
1590  return seg;
1591 }
1592 
1593 static int read_from_url(struct representation *pls, struct fragment *seg,
1594  uint8_t *buf, int buf_size)
1595 {
1596  int ret;
1597 
1598  /* limit read if the fragment was only a part of a file */
1599  if (seg->size >= 0)
1600  buf_size = FFMIN(buf_size, pls->cur_seg_size - pls->cur_seg_offset);
1601 
1602  ret = avio_read(pls->input, buf, buf_size);
1603  if (ret > 0)
1604  pls->cur_seg_offset += ret;
1605 
1606  return ret;
1607 }
1608 
1609 static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
1610 {
1611  AVDictionary *opts = NULL;
1612  char *url = NULL;
1613  int ret = 0;
1614 
1615  url = av_mallocz(c->max_url_size);
1616  if (!url) {
1617  goto cleanup;
1618  }
1619 
1620  if (seg->size >= 0) {
1621  /* try to restrict the HTTP request to the part we want
1622  * (if this is in fact a HTTP request) */
1623  av_dict_set_int(&opts, "offset", seg->url_offset, 0);
1624  av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
1625  }
1626 
1627  ff_make_absolute_url(url, c->max_url_size, c->base_url, seg->url);
1628  av_log(pls->parent, AV_LOG_VERBOSE, "DASH request for url '%s', offset %"PRId64", playlist %d\n",
1629  url, seg->url_offset, pls->rep_idx);
1630  ret = open_url(pls->parent, &pls->input, url, c->avio_opts, opts, NULL);
1631  if (ret < 0) {
1632  goto cleanup;
1633  }
1634 
1635 cleanup:
1636  av_free(url);
1637  av_dict_free(&opts);
1638  pls->cur_seg_offset = 0;
1639  pls->cur_seg_size = seg->size;
1640  return ret;
1641 }
1642 
1643 static int update_init_section(struct representation *pls)
1644 {
1645  static const int max_init_section_size = 1024 * 1024;
1646  DASHContext *c = pls->parent->priv_data;
1647  int64_t sec_size;
1648  int64_t urlsize;
1649  int ret;
1650 
1651  if (!pls->init_section || pls->init_sec_buf)
1652  return 0;
1653 
1654  ret = open_input(c, pls, pls->init_section);
1655  if (ret < 0) {
1657  "Failed to open an initialization section in playlist %d\n",
1658  pls->rep_idx);
1659  return ret;
1660  }
1661 
1662  if (pls->init_section->size >= 0)
1663  sec_size = pls->init_section->size;
1664  else if ((urlsize = avio_size(pls->input)) >= 0)
1665  sec_size = urlsize;
1666  else
1667  sec_size = max_init_section_size;
1668 
1669  av_log(pls->parent, AV_LOG_DEBUG,
1670  "Downloading an initialization section of size %"PRId64"\n",
1671  sec_size);
1672 
1673  sec_size = FFMIN(sec_size, max_init_section_size);
1674 
1675  av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
1676 
1677  ret = read_from_url(pls, pls->init_section, pls->init_sec_buf,
1678  pls->init_sec_buf_size);
1679  ff_format_io_close(pls->parent, &pls->input);
1680 
1681  if (ret < 0)
1682  return ret;
1683 
1684  pls->init_sec_data_len = ret;
1685  pls->init_sec_buf_read_offset = 0;
1686 
1687  return 0;
1688 }
1689 
1690 static int64_t seek_data(void *opaque, int64_t offset, int whence)
1691 {
1692  struct representation *v = opaque;
1693  if (v->n_fragments && !v->init_sec_data_len) {
1694  return avio_seek(v->input, offset, whence);
1695  }
1696 
1697  return AVERROR(ENOSYS);
1698 }
1699 
1700 static int read_data(void *opaque, uint8_t *buf, int buf_size)
1701 {
1702  int ret = 0;
1703  struct representation *v = opaque;
1704  DASHContext *c = v->parent->priv_data;
1705 
1706 restart:
1707  if (!v->input) {
1708  free_fragment(&v->cur_seg);
1709  v->cur_seg = get_current_fragment(v);
1710  if (!v->cur_seg) {
1711  ret = AVERROR_EOF;
1712  goto end;
1713  }
1714 
1715  /* load/update Media Initialization Section, if any */
1716  ret = update_init_section(v);
1717  if (ret)
1718  goto end;
1719 
1720  ret = open_input(c, v, v->cur_seg);
1721  if (ret < 0) {
1723  goto end;
1724  ret = AVERROR_EXIT;
1725  }
1726  av_log(v->parent, AV_LOG_WARNING, "Failed to open fragment of playlist %d\n", v->rep_idx);
1727  v->cur_seq_no++;
1728  goto restart;
1729  }
1730  }
1731 
1733  /* Push init section out first before first actual fragment */
1734  int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
1735  memcpy(buf, v->init_sec_buf, copy_size);
1736  v->init_sec_buf_read_offset += copy_size;
1737  ret = copy_size;
1738  goto end;
1739  }
1740 
1741  /* check the v->cur_seg, if it is null, get current and double check if the new v->cur_seg*/
1742  if (!v->cur_seg) {
1743  v->cur_seg = get_current_fragment(v);
1744  }
1745  if (!v->cur_seg) {
1746  ret = AVERROR_EOF;
1747  goto end;
1748  }
1749  ret = read_from_url(v, v->cur_seg, buf, buf_size);
1750  if (ret > 0)
1751  goto end;
1752 
1753  if (c->is_live || v->cur_seq_no < v->last_seq_no) {
1754  if (!v->is_restart_needed)
1755  v->cur_seq_no++;
1756  v->is_restart_needed = 1;
1757  }
1758 
1759 end:
1760  return ret;
1761 }
1762 
1764 {
1765  DASHContext *c = s->priv_data;
1766  const char *opts[] = { "headers", "user_agent", "cookies", NULL }, **opt = opts;
1767  uint8_t *buf = NULL;
1768  int ret = 0;
1769 
1770  while (*opt) {
1771  if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN, &buf) >= 0) {
1772  if (buf[0] != '\0') {
1773  ret = av_dict_set(&c->avio_opts, *opt, buf, AV_DICT_DONT_STRDUP_VAL);
1774  if (ret < 0) {
1775  av_freep(&buf);
1776  return ret;
1777  }
1778  } else {
1779  av_freep(&buf);
1780  }
1781  }
1782  opt++;
1783  }
1784 
1785  return ret;
1786 }
1787 
1788 static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
1789  int flags, AVDictionary **opts)
1790 {
1791  av_log(s, AV_LOG_ERROR,
1792  "A DASH playlist item '%s' referred to an external file '%s'. "
1793  "Opening this file was forbidden for security reasons\n",
1794  s->url, url);
1795  return AVERROR(EPERM);
1796 }
1797 
1799 {
1800  /* note: the internal buffer could have changed */
1801  av_freep(&pls->pb.buffer);
1802  memset(&pls->pb, 0x00, sizeof(AVIOContext));
1803  pls->ctx->pb = NULL;
1804  avformat_close_input(&pls->ctx);
1805  pls->ctx = NULL;
1806 }
1807 
1809 {
1810  DASHContext *c = s->priv_data;
1811  AVInputFormat *in_fmt = NULL;
1812  AVDictionary *in_fmt_opts = NULL;
1813  uint8_t *avio_ctx_buffer = NULL;
1814  int ret = 0, i;
1815 
1816  if (pls->ctx) {
1818  }
1819 
1821  ret = AVERROR_EXIT;
1822  goto fail;
1823  }
1824 
1825  if (!(pls->ctx = avformat_alloc_context())) {
1826  ret = AVERROR(ENOMEM);
1827  goto fail;
1828  }
1829 
1830  avio_ctx_buffer = av_malloc(INITIAL_BUFFER_SIZE);
1831  if (!avio_ctx_buffer ) {
1832  ret = AVERROR(ENOMEM);
1833  avformat_free_context(pls->ctx);
1834  pls->ctx = NULL;
1835  goto fail;
1836  }
1837  if (c->is_live) {
1838  ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, NULL);
1839  } else {
1840  ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, seek_data);
1841  }
1842  pls->pb.seekable = 0;
1843 
1844  if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
1845  goto fail;
1846 
1847  pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
1848  pls->ctx->probesize = 1024 * 4;
1850  ret = av_probe_input_buffer(&pls->pb, &in_fmt, "", NULL, 0, 0);
1851  if (ret < 0) {
1852  av_log(s, AV_LOG_ERROR, "Error when loading first fragment, playlist %d\n", (int)pls->rep_idx);
1853  avformat_free_context(pls->ctx);
1854  pls->ctx = NULL;
1855  goto fail;
1856  }
1857 
1858  pls->ctx->pb = &pls->pb;
1859  pls->ctx->io_open = nested_io_open;
1860 
1861  // provide additional information from mpd if available
1862  ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url
1863  av_dict_free(&in_fmt_opts);
1864  if (ret < 0)
1865  goto fail;
1866  if (pls->n_fragments) {
1867 #if FF_API_R_FRAME_RATE
1868  if (pls->framerate.den) {
1869  for (i = 0; i < pls->ctx->nb_streams; i++)
1870  pls->ctx->streams[i]->r_frame_rate = pls->framerate;
1871  }
1872 #endif
1873 
1874  ret = avformat_find_stream_info(pls->ctx, NULL);
1875  if (ret < 0)
1876  goto fail;
1877  }
1878 
1879 fail:
1880  return ret;
1881 }
1882 
1884 {
1885  int ret = 0;
1886  int i;
1887 
1888  pls->parent = s;
1889  pls->cur_seq_no = calc_cur_seg_no(s, pls);
1890 
1891  if (!pls->last_seq_no) {
1892  pls->last_seq_no = calc_max_seg_no(pls, s->priv_data);
1893  }
1894 
1895  ret = reopen_demux_for_component(s, pls);
1896  if (ret < 0) {
1897  goto fail;
1898  }
1899  for (i = 0; i < pls->ctx->nb_streams; i++) {
1900  AVStream *st = avformat_new_stream(s, NULL);
1901  AVStream *ist = pls->ctx->streams[i];
1902  if (!st) {
1903  ret = AVERROR(ENOMEM);
1904  goto fail;
1905  }
1906  st->id = i;
1909  }
1910 
1911  return 0;
1912 fail:
1913  return ret;
1914 }
1915 
1916 static int is_common_init_section_exist(struct representation **pls, int n_pls)
1917 {
1918  struct fragment *first_init_section = pls[0]->init_section;
1919  char *url =NULL;
1920  int64_t url_offset = -1;
1921  int64_t size = -1;
1922  int i = 0;
1923 
1924  if (first_init_section == NULL || n_pls == 0)
1925  return 0;
1926 
1927  url = first_init_section->url;
1928  url_offset = first_init_section->url_offset;
1929  size = pls[0]->init_section->size;
1930  for (i=0;i<n_pls;i++) {
1931  if (av_strcasecmp(pls[i]->init_section->url,url) || pls[i]->init_section->url_offset != url_offset || pls[i]->init_section->size != size) {
1932  return 0;
1933  }
1934  }
1935  return 1;
1936 }
1937 
1938 static void copy_init_section(struct representation *rep_dest, struct representation *rep_src)
1939 {
1940  rep_dest->init_sec_buf = av_mallocz(rep_src->init_sec_buf_size);
1941  memcpy(rep_dest->init_sec_buf, rep_src->init_sec_buf, rep_src->init_sec_data_len);
1942  rep_dest->init_sec_buf_size = rep_src->init_sec_buf_size;
1943  rep_dest->init_sec_data_len = rep_src->init_sec_data_len;
1944  rep_dest->cur_timestamp = rep_src->cur_timestamp;
1945 }
1946 
1947 
1949 {
1950  DASHContext *c = s->priv_data;
1951  int ret = 0;
1952  int stream_index = 0;
1953  int i;
1954 
1956 
1957  if ((ret = save_avio_options(s)) < 0)
1958  goto fail;
1959 
1960  av_dict_set(&c->avio_opts, "seekable", "0", 0);
1961 
1962  if ((ret = parse_manifest(s, s->url, s->pb)) < 0)
1963  goto fail;
1964 
1965  /* If this isn't a live stream, fill the total duration of the
1966  * stream. */
1967  if (!c->is_live) {
1969  }
1970 
1971  if(c->n_videos)
1973 
1974  /* Open the demuxer for video and audio components if available */
1975  for (i = 0; i < c->n_videos; i++) {
1976  struct representation *cur_video = c->videos[i];
1977  if (i > 0 && c->is_init_section_common_video) {
1978  copy_init_section(cur_video,c->videos[0]);
1979  }
1980  ret = open_demux_for_component(s, cur_video);
1981 
1982  if (ret)
1983  goto fail;
1984  cur_video->stream_index = stream_index;
1985  ++stream_index;
1986  }
1987 
1988  if(c->n_audios)
1990 
1991  for (i = 0; i < c->n_audios; i++) {
1992  struct representation *cur_audio = c->audios[i];
1993  if (i > 0 && c->is_init_section_common_audio) {
1994  copy_init_section(cur_audio,c->audios[0]);
1995  }
1996  ret = open_demux_for_component(s, cur_audio);
1997 
1998  if (ret)
1999  goto fail;
2000  cur_audio->stream_index = stream_index;
2001  ++stream_index;
2002  }
2003 
2004  if (!stream_index) {
2005  ret = AVERROR_INVALIDDATA;
2006  goto fail;
2007  }
2008 
2009  /* Create a program */
2010  if (!ret) {
2011  AVProgram *program;
2012  program = av_new_program(s, 0);
2013  if (!program) {
2014  goto fail;
2015  }
2016 
2017  for (i = 0; i < c->n_videos; i++) {
2018  struct representation *pls = c->videos[i];
2019 
2021  pls->assoc_stream = s->streams[pls->stream_index];
2022  if (pls->bandwidth > 0)
2023  av_dict_set_int(&pls->assoc_stream->metadata, "variant_bitrate", pls->bandwidth, 0);
2024  if (pls->id[0])
2025  av_dict_set(&pls->assoc_stream->metadata, "id", pls->id, 0);
2026  }
2027  for (i = 0; i < c->n_audios; i++) {
2028  struct representation *pls = c->audios[i];
2029 
2031  pls->assoc_stream = s->streams[pls->stream_index];
2032  if (pls->bandwidth > 0)
2033  av_dict_set_int(&pls->assoc_stream->metadata, "variant_bitrate", pls->bandwidth, 0);
2034  if (pls->id[0])
2035  av_dict_set(&pls->assoc_stream->metadata, "id", pls->id, 0);
2036  }
2037  }
2038 
2039  return 0;
2040 fail:
2041  return ret;
2042 }
2043 
2045 {
2046  int i, j;
2047 
2048  for (i = 0; i < n; i++) {
2049  struct representation *pls = p[i];
2050 
2051  int needed = !pls->assoc_stream || pls->assoc_stream->discard < AVDISCARD_ALL;
2052  if (needed && !pls->ctx) {
2053  pls->cur_seg_offset = 0;
2054  pls->init_sec_buf_read_offset = 0;
2055  /* Catch up */
2056  for (j = 0; j < n; j++) {
2057  pls->cur_seq_no = FFMAX(pls->cur_seq_no, p[j]->cur_seq_no);
2058  }
2060  av_log(s, AV_LOG_INFO, "Now receiving stream_index %d\n", pls->stream_index);
2061  } else if (!needed && pls->ctx) {
2063  if (pls->input)
2064  ff_format_io_close(pls->parent, &pls->input);
2065  av_log(s, AV_LOG_INFO, "No longer receiving stream_index %d\n", pls->stream_index);
2066  }
2067  }
2068 }
2069 
2071 {
2072  DASHContext *c = s->priv_data;
2073  int ret = 0, i;
2074  int64_t mints = 0;
2075  struct representation *cur = NULL;
2076 
2079 
2080  for (i = 0; i < c->n_videos; i++) {
2081  struct representation *pls = c->videos[i];
2082  if (!pls->ctx)
2083  continue;
2084  if (!cur || pls->cur_timestamp < mints) {
2085  cur = pls;
2086  mints = pls->cur_timestamp;
2087  }
2088  }
2089  for (i = 0; i < c->n_audios; i++) {
2090  struct representation *pls = c->audios[i];
2091  if (!pls->ctx)
2092  continue;
2093  if (!cur || pls->cur_timestamp < mints) {
2094  cur = pls;
2095  mints = pls->cur_timestamp;
2096  }
2097  }
2098 
2099  if (!cur) {
2100  return AVERROR_INVALIDDATA;
2101  }
2102  while (!ff_check_interrupt(c->interrupt_callback) && !ret) {
2103  ret = av_read_frame(cur->ctx, pkt);
2104  if (ret >= 0) {
2105  /* If we got a packet, return it */
2106  cur->cur_timestamp = av_rescale(pkt->pts, (int64_t)cur->ctx->streams[0]->time_base.num * 90000, cur->ctx->streams[0]->time_base.den);
2107  pkt->stream_index = cur->stream_index;
2108  return 0;
2109  }
2110  if (cur->is_restart_needed) {
2111  cur->cur_seg_offset = 0;
2112  cur->init_sec_buf_read_offset = 0;
2113  if (cur->input)
2114  ff_format_io_close(cur->parent, &cur->input);
2115  ret = reopen_demux_for_component(s, cur);
2116  cur->is_restart_needed = 0;
2117  }
2118  }
2119  return AVERROR_EOF;
2120 }
2121 
2123 {
2124  DASHContext *c = s->priv_data;
2125  free_audio_list(c);
2126  free_video_list(c);
2127 
2128  av_dict_free(&c->avio_opts);
2129  av_freep(&c->base_url);
2130  return 0;
2131 }
2132 
2133 static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
2134 {
2135  int ret = 0;
2136  int i = 0;
2137  int j = 0;
2138  int64_t duration = 0;
2139 
2140  av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms], playlist %d%s\n",
2141  seek_pos_msec, pls->rep_idx, dry_run ? " (dry)" : "");
2142 
2143  // single fragment mode
2144  if (pls->n_fragments == 1) {
2145  pls->cur_timestamp = 0;
2146  pls->cur_seg_offset = 0;
2147  if (dry_run)
2148  return 0;
2149  ff_read_frame_flush(pls->ctx);
2150  return av_seek_frame(pls->ctx, -1, seek_pos_msec * 1000, flags);
2151  }
2152 
2153  if (pls->input)
2154  ff_format_io_close(pls->parent, &pls->input);
2155 
2156  // find the nearest fragment
2157  if (pls->n_timelines > 0 && pls->fragment_timescale > 0) {
2158  int64_t num = pls->first_seq_no;
2159  av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline start n_timelines[%d] "
2160  "last_seq_no[%"PRId64"], playlist %d.\n",
2161  (int)pls->n_timelines, (int64_t)pls->last_seq_no, (int)pls->rep_idx);
2162  for (i = 0; i < pls->n_timelines; i++) {
2163  if (pls->timelines[i]->starttime > 0) {
2164  duration = pls->timelines[i]->starttime;
2165  }
2166  duration += pls->timelines[i]->duration;
2167  if (seek_pos_msec < ((duration * 1000) / pls->fragment_timescale)) {
2168  goto set_seq_num;
2169  }
2170  for (j = 0; j < pls->timelines[i]->repeat; j++) {
2171  duration += pls->timelines[i]->duration;
2172  num++;
2173  if (seek_pos_msec < ((duration * 1000) / pls->fragment_timescale)) {
2174  goto set_seq_num;
2175  }
2176  }
2177  num++;
2178  }
2179 
2180 set_seq_num:
2181  pls->cur_seq_no = num > pls->last_seq_no ? pls->last_seq_no : num;
2182  av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline end cur_seq_no[%"PRId64"], playlist %d.\n",
2183  (int64_t)pls->cur_seq_no, (int)pls->rep_idx);
2184  } else if (pls->fragment_duration > 0) {
2185  pls->cur_seq_no = pls->first_seq_no + ((seek_pos_msec * pls->fragment_timescale) / pls->fragment_duration) / 1000;
2186  } else {
2187  av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing timeline or fragment_duration\n");
2188  pls->cur_seq_no = pls->first_seq_no;
2189  }
2190  pls->cur_timestamp = 0;
2191  pls->cur_seg_offset = 0;
2192  pls->init_sec_buf_read_offset = 0;
2193  ret = dry_run ? 0 : reopen_demux_for_component(s, pls);
2194 
2195  return ret;
2196 }
2197 
2198 static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2199 {
2200  int ret = 0, i;
2201  DASHContext *c = s->priv_data;
2202  int64_t seek_pos_msec = av_rescale_rnd(timestamp, 1000,
2203  s->streams[stream_index]->time_base.den,
2204  flags & AVSEEK_FLAG_BACKWARD ?
2206  if ((flags & AVSEEK_FLAG_BYTE) || c->is_live)
2207  return AVERROR(ENOSYS);
2208 
2209  /* Seek in discarded streams with dry_run=1 to avoid reopening them */
2210  for (i = 0; i < c->n_videos; i++) {
2211  if (!ret)
2212  ret = dash_seek(s, c->videos[i], seek_pos_msec, flags, !c->videos[i]->ctx);
2213  }
2214  for (i = 0; i < c->n_audios; i++) {
2215  if (!ret)
2216  ret = dash_seek(s, c->audios[i], seek_pos_msec, flags, !c->audios[i]->ctx);
2217  }
2218 
2219  return ret;
2220 }
2221 
2222 static int dash_probe(AVProbeData *p)
2223 {
2224  if (!av_stristr(p->buf, "<MPD"))
2225  return 0;
2226 
2227  if (av_stristr(p->buf, "dash:profile:isoff-on-demand:2011") ||
2228  av_stristr(p->buf, "dash:profile:isoff-live:2011") ||
2229  av_stristr(p->buf, "dash:profile:isoff-live:2012") ||
2230  av_stristr(p->buf, "dash:profile:isoff-main:2011")) {
2231  return AVPROBE_SCORE_MAX;
2232  }
2233  if (av_stristr(p->buf, "dash:profile")) {
2234  return AVPROBE_SCORE_MAX;
2235  }
2236 
2237  return 0;
2238 }
2239 
2240 #define OFFSET(x) offsetof(DASHContext, x)
2241 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2242 static const AVOption dash_options[] = {
2243  {"allowed_extensions", "List of file extensions that dash is allowed to access",
2244  OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
2245  {.str = "aac,m4a,m4s,m4v,mov,mp4"},
2246  INT_MIN, INT_MAX, FLAGS},
2247  {NULL}
2248 };
2249 
2250 static const AVClass dash_class = {
2251  .class_name = "dash",
2252  .item_name = av_default_item_name,
2253  .option = dash_options,
2254  .version = LIBAVUTIL_VERSION_INT,
2255 };
2256 
2258  .name = "dash",
2259  .long_name = NULL_IF_CONFIG_SMALL("Dynamic Adaptive Streaming over HTTP"),
2260  .priv_class = &dash_class,
2261  .priv_data_size = sizeof(DASHContext),
2268 };
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:2241
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2504
int64_t probesize
Maximum size of the data read from input for determining the input container format.
Definition: avformat.h:1517
AVIOContext * input
Definition: dashdec.c:78
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
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:160
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:1629
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:260
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:1700
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:4881
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:170
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:1518
static int read_from_url(struct representation *pls, struct fragment *seg, uint8_t *buf, int buf_size)
Definition: dashdec.c:1593
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
static const AVOption dash_options[]
Definition: dashdec.c:2242
static int64_t seek_data(void *opaque, int64_t offset, int whence)
Definition: dashdec.c:1690
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
discard all
Definition: avcodec.h:802
static AVPacket pkt
int64_t cur_timestamp
Definition: dashdec.c:118
int n_videos
Definition: dashdec.c:139
uint64_t availability_end_time
Definition: dashdec.c:148
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:594
int is_init_section_common_audio
Definition: dashdec.c:166
uint64_t min_buffer_time
Definition: dashdec.c:152
static void free_fragment(struct fragment **seg)
Definition: dashdec.c:325
Format I/O context.
Definition: avformat.h:1351
#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:1917
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:186
static int64_t start_time
Definition: ffplay.c:330
uint64_t suggested_presentation_delay
Definition: dashdec.c:146
uint8_t
Round toward +infinity.
Definition: mathematics.h:83
#define av_malloc(s)
uint64_t media_presentation_duration
Definition: dashdec.c:145
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:881
static int dash_close(AVFormatContext *s)
Definition: dashdec.c:2122
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5669
uint64_t period_duration
Definition: dashdec.c:155
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4454
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
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:1482
AVProgram * av_new_program(AVFormatContext *s, int id)
Definition: utils.c:4553
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:149
ptrdiff_t size
Definition: opengl_enc.c:101
static void recheck_discard_flags(AVFormatContext *s, struct representation **p, int n)
Definition: dashdec.c:2044
uint64_t availability_start_time
Definition: dashdec.c:147
static enum AVMediaType get_content_type(xmlNodePtr node)
Definition: dashdec.c:552
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:648
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:535
static int aligned(int val)
Definition: dashdec.c:176
Callback for checking whether to abort blocking functions.
Definition: avio.h:58
int av_probe_input_buffer(AVIOContext *pb, 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
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2012
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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:345
int64_t starttime
Definition: dashdec.c:57
static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
Definition: dashdec.c:1415
static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
Definition: dashdec.c:1375
#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:1323
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1190
char * url
input or output URL.
Definition: avformat.h:1447
#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:1916
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:2198
char * av_strireplace(const char *str, const char *from, const char *to)
Locale-independent strings replace.
Definition: avstring.c:234
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:1268
#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:117
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:488
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
uint64_t minimum_update_period
Definition: dashdec.c:150
struct fragment ** fragments
Definition: dashdec.c:93
static void free_representation(struct representation *pls)
Definition: dashdec.c:356
AVIOInterruptCB * interrupt_callback
Definition: dashdec.c:159
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
static void free_audio_list(DASHContext *c)
Definition: dashdec.c:386
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:334
#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's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
int32_t
static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
Definition: dashdec.c:1401
static void copy_init_section(struct representation *rep_dest, struct representation *rep_src)
Definition: dashdec.c:1938
static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
Definition: dashdec.c:216
#define s(width, name)
Definition: cbs_vp9.c:257
int is_live
Definition: dashdec.c:158
enum AVMediaType type
Definition: dashdec.c:86
#define OFFSET(x)
Definition: dashdec.c:2240
static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary *opts, AVDictionary *opts2, int *is_http)
Definition: dashdec.c:397
static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
Definition: dashdec.c:1137
int n
Definition: avisynth_c.h:684
AVDictionary * metadata
Definition: avformat.h:938
#define AVFMT_FLAG_CUSTOM_IO
The caller has supplied a custom AVIOContext, don't avio_close() it.
Definition: avformat.h:1490
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int save_avio_options(AVFormatContext *s)
Definition: dashdec.c:1763
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:156
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:1525
static char * get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
Definition: dashdec.c:519
static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **opts)
Definition: dashdec.c:1788
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
static int dash_probe(AVProbeData *p)
Definition: dashdec.c:2222
Stream structure.
Definition: avformat.h:874
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:1393
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:162
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
static int dash_read_header(AVFormatContext *s)
Definition: dashdec.c:1948
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
uint64_t time_shift_buffer_depth
Definition: dashdec.c:151
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
Describe the class of an AVClass context structure.
Definition: log.h:67
static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
Definition: dashdec.c:1609
static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dashdec.c:2070
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:697
#define AVSEEK_FLAG_BYTE
seeking based on position in bytes
Definition: avformat.h:2505
AVMediaType
Definition: avutil.h:199
static struct fragment * get_Fragment(char *range)
Definition: dashdec.c:576
static int parse_manifest_segmenttimeline(AVFormatContext *s, struct representation *rep, xmlNodePtr fragment_timeline_node)
Definition: dashdec.c:661
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:1178
char id[20]
Definition: dashdec.c:87
AVDictionary * avio_opts
Definition: dashdec.c:161
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4388
This structure contains the data a format has to probe a file.
Definition: avformat.h:448
misc parsing utilities
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
Definition: utils.c:1767
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:596
AVInputFormat ff_dash_demuxer
Definition: dashdec.c:2257
static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
Definition: dashdec.c:2133
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
Definition: utils.c:2505
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:1643
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
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:3563
static const AVClass dash_class
Definition: dashdec.c:2250
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:1066
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:4426
int64_t fragment_timescale
Definition: dashdec.c:103
static void close_demux_for_component(struct representation *pls)
Definition: dashdec.c:1798
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:477
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:1075
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:463
AVRational framerate
Definition: dashdec.c:89
void * priv_data
Format private data.
Definition: avformat.h:1379
int64_t start_number
Definition: dashdec.c:100
static uint64_t get_current_time_in_sec(void)
Definition: dashdec.c:181
int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
Definition: utils.c:537
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:807
char * adaptionset_minwidth_val
Definition: dashdec.c:130
static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1361
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:1466
static void free_video_list(DASHContext *c)
Definition: dashdec.c:375
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:690
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:647
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1021
char * url_template
Definition: dashdec.c:76
int is_init_section_common_video
Definition: dashdec.c:165
int stream_index
Definition: avcodec.h:1446
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:903
char * adaptionset_maxheight_val
Definition: dashdec.c:133
static int reopen_demux_for_component(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1808
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:929
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:998
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
Definition: avformat.h:1933
This structure stores compressed data.
Definition: avcodec.h:1421
static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
Definition: dashdec.c:295
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:1437
static int open_demux_for_component(AVFormatContext *s, struct representation *pls)
Definition: dashdec.c:1883
GLuint buffer
Definition: opengl_enc.c:102
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:1433
static uint8_t tmp[11]
Definition: aes_ctr.c:26