FFmpeg  4.4
hls.c
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1 /*
2  * Apple HTTP Live Streaming demuxer
3  * Copyright (c) 2010 Martin Storsjo
4  * Copyright (c) 2013 Anssi Hannula
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 
23 /**
24  * @file
25  * Apple HTTP Live Streaming demuxer
26  * https://www.rfc-editor.org/rfc/rfc8216.txt
27  */
28 
29 #include "libavformat/http.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/dict.h"
36 #include "libavutil/time.h"
37 #include "avformat.h"
38 #include "internal.h"
39 #include "avio_internal.h"
40 #include "id3v2.h"
41 
42 #define INITIAL_BUFFER_SIZE 32768
43 
44 #define MAX_FIELD_LEN 64
45 #define MAX_CHARACTERISTICS_LEN 512
46 
47 #define MPEG_TIME_BASE 90000
48 #define MPEG_TIME_BASE_Q (AVRational){1, MPEG_TIME_BASE}
49 
50 /*
51  * An apple http stream consists of a playlist with media segment files,
52  * played sequentially. There may be several playlists with the same
53  * video content, in different bandwidth variants, that are played in
54  * parallel (preferably only one bandwidth variant at a time). In this case,
55  * the user supplied the url to a main playlist that only lists the variant
56  * playlists.
57  *
58  * If the main playlist doesn't point at any variants, we still create
59  * one anonymous toplevel variant for this, to maintain the structure.
60  */
61 
62 enum KeyType {
66 };
67 
68 struct segment {
69  int64_t duration;
70  int64_t url_offset;
71  int64_t size;
72  char *url;
73  char *key;
74  enum KeyType key_type;
75  uint8_t iv[16];
76  /* associated Media Initialization Section, treated as a segment */
78 };
79 
80 struct rendition;
81 
86 };
87 
88 /*
89  * Each playlist has its own demuxer. If it currently is active,
90  * it has an open AVIOContext too, and potentially an AVPacket
91  * containing the next packet from this stream.
92  */
93 struct playlist {
102  int index;
106 
107  /* main demuxer streams associated with this playlist
108  * indexed by the subdemuxer stream indexes */
111 
112  int finished;
113  enum PlaylistType type;
115  int64_t start_seq_no;
117  struct segment **segments;
118  int needed;
119  int broken;
120  int64_t cur_seq_no;
121  int64_t last_seq_no;
123  int64_t cur_seg_offset;
124  int64_t last_load_time;
125 
126  /* Currently active Media Initialization Section */
129  unsigned int init_sec_buf_size;
130  unsigned int init_sec_data_len;
132 
135 
136  /* ID3 timestamp handling (elementary audio streams have ID3 timestamps
137  * (and possibly other ID3 tags) in the beginning of each segment) */
138  int is_id3_timestamped; /* -1: not yet known */
139  int64_t id3_mpegts_timestamp; /* in mpegts tb */
140  int64_t id3_offset; /* in stream original tb */
141  uint8_t* id3_buf; /* temp buffer for id3 parsing */
142  unsigned int id3_buf_size;
143  AVDictionary *id3_initial; /* data from first id3 tag */
144  int id3_found; /* ID3 tag found at some point */
145  int id3_changed; /* ID3 tag data has changed at some point */
146  ID3v2ExtraMeta *id3_deferred_extra; /* stored here until subdemuxer is opened */
147 
148  int64_t seek_timestamp;
150  int seek_stream_index; /* into subdemuxer stream array */
151 
152  /* Renditions associated with this playlist, if any.
153  * Alternative rendition playlists have a single rendition associated
154  * with them, and variant main Media Playlists may have
155  * multiple (playlist-less) renditions associated with them. */
158 
159  /* Media Initialization Sections (EXT-X-MAP) associated with this
160  * playlist, if any. */
163 };
164 
165 /*
166  * Renditions are e.g. alternative subtitle or audio streams.
167  * The rendition may either be an external playlist or it may be
168  * contained in the main Media Playlist of the variant (in which case
169  * playlist is NULL).
170  */
171 struct rendition {
172  enum AVMediaType type;
178 };
179 
180 struct variant {
182 
183  /* every variant contains at least the main Media Playlist in index 0 */
185  struct playlist **playlists;
186 
190 };
191 
192 typedef struct HLSContext {
193  AVClass *class;
196  struct variant **variants;
198  struct playlist **playlists;
201 
202  int64_t cur_seq_no;
207  int64_t cur_timestamp;
216 } HLSContext;
217 
218 static void free_segment_dynarray(struct segment **segments, int n_segments)
219 {
220  int i;
221  for (i = 0; i < n_segments; i++) {
222  av_freep(&segments[i]->key);
223  av_freep(&segments[i]->url);
224  av_freep(&segments[i]);
225  }
226 }
227 
228 static void free_segment_list(struct playlist *pls)
229 {
231  av_freep(&pls->segments);
232  pls->n_segments = 0;
233 }
234 
235 static void free_init_section_list(struct playlist *pls)
236 {
237  int i;
238  for (i = 0; i < pls->n_init_sections; i++) {
239  av_freep(&pls->init_sections[i]->url);
240  av_freep(&pls->init_sections[i]);
241  }
242  av_freep(&pls->init_sections);
243  pls->n_init_sections = 0;
244 }
245 
247 {
248  int i;
249  for (i = 0; i < c->n_playlists; i++) {
250  struct playlist *pls = c->playlists[i];
251  free_segment_list(pls);
253  av_freep(&pls->main_streams);
254  av_freep(&pls->renditions);
255  av_freep(&pls->id3_buf);
256  av_dict_free(&pls->id3_initial);
258  av_freep(&pls->init_sec_buf);
259  av_packet_free(&pls->pkt);
260  av_freep(&pls->pb.buffer);
261  ff_format_io_close(c->ctx, &pls->input);
262  pls->input_read_done = 0;
263  ff_format_io_close(c->ctx, &pls->input_next);
264  pls->input_next_requested = 0;
265  if (pls->ctx) {
266  pls->ctx->pb = NULL;
267  avformat_close_input(&pls->ctx);
268  }
269  av_free(pls);
270  }
271  av_freep(&c->playlists);
272  c->n_playlists = 0;
273 }
274 
276 {
277  int i;
278  for (i = 0; i < c->n_variants; i++) {
279  struct variant *var = c->variants[i];
280  av_freep(&var->playlists);
281  av_free(var);
282  }
283  av_freep(&c->variants);
284  c->n_variants = 0;
285 }
286 
288 {
289  int i;
290  for (i = 0; i < c->n_renditions; i++)
291  av_freep(&c->renditions[i]);
292  av_freep(&c->renditions);
293  c->n_renditions = 0;
294 }
295 
296 static struct playlist *new_playlist(HLSContext *c, const char *url,
297  const char *base)
298 {
299  struct playlist *pls = av_mallocz(sizeof(struct playlist));
300  if (!pls)
301  return NULL;
302  pls->pkt = av_packet_alloc();
303  if (!pls->pkt) {
304  av_free(pls);
305  return NULL;
306  }
307  ff_make_absolute_url(pls->url, sizeof(pls->url), base, url);
308  if (!pls->url[0]) {
309  av_packet_free(&pls->pkt);
310  av_free(pls);
311  return NULL;
312  }
314 
315  pls->is_id3_timestamped = -1;
317 
318  dynarray_add(&c->playlists, &c->n_playlists, pls);
319  return pls;
320 }
321 
322 struct variant_info {
323  char bandwidth[20];
324  /* variant group ids: */
328 };
329 
330 static struct variant *new_variant(HLSContext *c, struct variant_info *info,
331  const char *url, const char *base)
332 {
333  struct variant *var;
334  struct playlist *pls;
335 
336  pls = new_playlist(c, url, base);
337  if (!pls)
338  return NULL;
339 
340  var = av_mallocz(sizeof(struct variant));
341  if (!var)
342  return NULL;
343 
344  if (info) {
345  var->bandwidth = atoi(info->bandwidth);
346  strcpy(var->audio_group, info->audio);
347  strcpy(var->video_group, info->video);
348  strcpy(var->subtitles_group, info->subtitles);
349  }
350 
351  dynarray_add(&c->variants, &c->n_variants, var);
352  dynarray_add(&var->playlists, &var->n_playlists, pls);
353  return var;
354 }
355 
356 static void handle_variant_args(struct variant_info *info, const char *key,
357  int key_len, char **dest, int *dest_len)
358 {
359  if (!strncmp(key, "BANDWIDTH=", key_len)) {
360  *dest = info->bandwidth;
361  *dest_len = sizeof(info->bandwidth);
362  } else if (!strncmp(key, "AUDIO=", key_len)) {
363  *dest = info->audio;
364  *dest_len = sizeof(info->audio);
365  } else if (!strncmp(key, "VIDEO=", key_len)) {
366  *dest = info->video;
367  *dest_len = sizeof(info->video);
368  } else if (!strncmp(key, "SUBTITLES=", key_len)) {
369  *dest = info->subtitles;
370  *dest_len = sizeof(info->subtitles);
371  }
372 }
373 
374 struct key_info {
376  char method[11];
377  char iv[35];
378 };
379 
380 static void handle_key_args(struct key_info *info, const char *key,
381  int key_len, char **dest, int *dest_len)
382 {
383  if (!strncmp(key, "METHOD=", key_len)) {
384  *dest = info->method;
385  *dest_len = sizeof(info->method);
386  } else if (!strncmp(key, "URI=", key_len)) {
387  *dest = info->uri;
388  *dest_len = sizeof(info->uri);
389  } else if (!strncmp(key, "IV=", key_len)) {
390  *dest = info->iv;
391  *dest_len = sizeof(info->iv);
392  }
393 }
394 
397  char byterange[32];
398 };
399 
400 static struct segment *new_init_section(struct playlist *pls,
401  struct init_section_info *info,
402  const char *url_base)
403 {
404  struct segment *sec;
405  char tmp_str[MAX_URL_SIZE], *ptr = tmp_str;
406 
407  if (!info->uri[0])
408  return NULL;
409 
410  sec = av_mallocz(sizeof(*sec));
411  if (!sec)
412  return NULL;
413 
414  if (!av_strncasecmp(info->uri, "data:", 5)) {
415  ptr = info->uri;
416  } else {
417  ff_make_absolute_url(tmp_str, sizeof(tmp_str), url_base, info->uri);
418  if (!tmp_str[0]) {
419  av_free(sec);
420  return NULL;
421  }
422  }
423  sec->url = av_strdup(ptr);
424  if (!sec->url) {
425  av_free(sec);
426  return NULL;
427  }
428 
429  if (info->byterange[0]) {
430  sec->size = strtoll(info->byterange, NULL, 10);
431  ptr = strchr(info->byterange, '@');
432  if (ptr)
433  sec->url_offset = strtoll(ptr+1, NULL, 10);
434  } else {
435  /* the entire file is the init section */
436  sec->size = -1;
437  }
438 
439  dynarray_add(&pls->init_sections, &pls->n_init_sections, sec);
440 
441  return sec;
442 }
443 
444 static void handle_init_section_args(struct init_section_info *info, const char *key,
445  int key_len, char **dest, int *dest_len)
446 {
447  if (!strncmp(key, "URI=", key_len)) {
448  *dest = info->uri;
449  *dest_len = sizeof(info->uri);
450  } else if (!strncmp(key, "BYTERANGE=", key_len)) {
451  *dest = info->byterange;
452  *dest_len = sizeof(info->byterange);
453  }
454 }
455 
457  char type[16];
463  char defaultr[4];
464  char forced[4];
466 };
467 
468 static struct rendition *new_rendition(HLSContext *c, struct rendition_info *info,
469  const char *url_base)
470 {
471  struct rendition *rend;
473  char *characteristic;
474  char *chr_ptr;
475  char *saveptr;
476 
477  if (!strcmp(info->type, "AUDIO"))
479  else if (!strcmp(info->type, "VIDEO"))
481  else if (!strcmp(info->type, "SUBTITLES"))
483  else if (!strcmp(info->type, "CLOSED-CAPTIONS"))
484  /* CLOSED-CAPTIONS is ignored since we do not support CEA-608 CC in
485  * AVC SEI RBSP anyway */
486  return NULL;
487 
488  if (type == AVMEDIA_TYPE_UNKNOWN) {
489  av_log(c->ctx, AV_LOG_WARNING, "Can't support the type: %s\n", info->type);
490  return NULL;
491  }
492 
493  /* URI is mandatory for subtitles as per spec */
494  if (type == AVMEDIA_TYPE_SUBTITLE && !info->uri[0]) {
495  av_log(c->ctx, AV_LOG_ERROR, "The URI tag is REQUIRED for subtitle.\n");
496  return NULL;
497  }
498 
499  /* TODO: handle subtitles (each segment has to parsed separately) */
500  if (c->ctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)
501  if (type == AVMEDIA_TYPE_SUBTITLE) {
502  av_log(c->ctx, AV_LOG_WARNING, "Can't support the subtitle(uri: %s)\n", info->uri);
503  return NULL;
504  }
505 
506  rend = av_mallocz(sizeof(struct rendition));
507  if (!rend)
508  return NULL;
509 
510  dynarray_add(&c->renditions, &c->n_renditions, rend);
511 
512  rend->type = type;
513  strcpy(rend->group_id, info->group_id);
514  strcpy(rend->language, info->language);
515  strcpy(rend->name, info->name);
516 
517  /* add the playlist if this is an external rendition */
518  if (info->uri[0]) {
519  rend->playlist = new_playlist(c, info->uri, url_base);
520  if (rend->playlist)
522  &rend->playlist->n_renditions, rend);
523  }
524 
525  if (info->assoc_language[0]) {
526  int langlen = strlen(rend->language);
527  if (langlen < sizeof(rend->language) - 3) {
528  rend->language[langlen] = ',';
529  strncpy(rend->language + langlen + 1, info->assoc_language,
530  sizeof(rend->language) - langlen - 2);
531  }
532  }
533 
534  if (!strcmp(info->defaultr, "YES"))
536  if (!strcmp(info->forced, "YES"))
538 
539  chr_ptr = info->characteristics;
540  while ((characteristic = av_strtok(chr_ptr, ",", &saveptr))) {
541  if (!strcmp(characteristic, "public.accessibility.describes-music-and-sound"))
543  else if (!strcmp(characteristic, "public.accessibility.describes-video"))
545 
546  chr_ptr = NULL;
547  }
548 
549  return rend;
550 }
551 
552 static void handle_rendition_args(struct rendition_info *info, const char *key,
553  int key_len, char **dest, int *dest_len)
554 {
555  if (!strncmp(key, "TYPE=", key_len)) {
556  *dest = info->type;
557  *dest_len = sizeof(info->type);
558  } else if (!strncmp(key, "URI=", key_len)) {
559  *dest = info->uri;
560  *dest_len = sizeof(info->uri);
561  } else if (!strncmp(key, "GROUP-ID=", key_len)) {
562  *dest = info->group_id;
563  *dest_len = sizeof(info->group_id);
564  } else if (!strncmp(key, "LANGUAGE=", key_len)) {
565  *dest = info->language;
566  *dest_len = sizeof(info->language);
567  } else if (!strncmp(key, "ASSOC-LANGUAGE=", key_len)) {
568  *dest = info->assoc_language;
569  *dest_len = sizeof(info->assoc_language);
570  } else if (!strncmp(key, "NAME=", key_len)) {
571  *dest = info->name;
572  *dest_len = sizeof(info->name);
573  } else if (!strncmp(key, "DEFAULT=", key_len)) {
574  *dest = info->defaultr;
575  *dest_len = sizeof(info->defaultr);
576  } else if (!strncmp(key, "FORCED=", key_len)) {
577  *dest = info->forced;
578  *dest_len = sizeof(info->forced);
579  } else if (!strncmp(key, "CHARACTERISTICS=", key_len)) {
580  *dest = info->characteristics;
581  *dest_len = sizeof(info->characteristics);
582  }
583  /*
584  * ignored:
585  * - AUTOSELECT: client may autoselect based on e.g. system language
586  * - INSTREAM-ID: EIA-608 closed caption number ("CC1".."CC4")
587  */
588 }
589 
590 /* used by parse_playlist to allocate a new variant+playlist when the
591  * playlist is detected to be a Media Playlist (not Master Playlist)
592  * and we have no parent Master Playlist (parsing of which would have
593  * allocated the variant and playlist already)
594  * *pls == NULL => Master Playlist or parentless Media Playlist
595  * *pls != NULL => parented Media Playlist, playlist+variant allocated */
596 static int ensure_playlist(HLSContext *c, struct playlist **pls, const char *url)
597 {
598  if (*pls)
599  return 0;
600  if (!new_variant(c, NULL, url, NULL))
601  return AVERROR(ENOMEM);
602  *pls = c->playlists[c->n_playlists - 1];
603  return 0;
604 }
605 
607  const char *url, AVDictionary **options)
608 {
609 #if !CONFIG_HTTP_PROTOCOL
611 #else
612  int ret;
613  URLContext *uc = ffio_geturlcontext(*pb);
614  av_assert0(uc);
615  (*pb)->eof_reached = 0;
616  ret = ff_http_do_new_request2(uc, url, options);
617  if (ret < 0) {
618  ff_format_io_close(s, pb);
619  }
620  return ret;
621 #endif
622 }
623 
624 static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
625  AVDictionary **opts, AVDictionary *opts2, int *is_http_out)
626 {
627  HLSContext *c = s->priv_data;
628  AVDictionary *tmp = NULL;
629  const char *proto_name = NULL;
630  int ret;
631  int is_http = 0;
632 
633  if (av_strstart(url, "crypto", NULL)) {
634  if (url[6] == '+' || url[6] == ':')
635  proto_name = avio_find_protocol_name(url + 7);
636  } else if (av_strstart(url, "data", NULL)) {
637  if (url[4] == '+' || url[4] == ':')
638  proto_name = avio_find_protocol_name(url + 5);
639  }
640 
641  if (!proto_name)
642  proto_name = avio_find_protocol_name(url);
643 
644  if (!proto_name)
645  return AVERROR_INVALIDDATA;
646 
647  // only http(s) & file are allowed
648  if (av_strstart(proto_name, "file", NULL)) {
649  if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
651  "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
652  "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
653  url);
654  return AVERROR_INVALIDDATA;
655  }
656  } else if (av_strstart(proto_name, "http", NULL)) {
657  is_http = 1;
658  } else if (av_strstart(proto_name, "data", NULL)) {
659  ;
660  } else
661  return AVERROR_INVALIDDATA;
662 
663  if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
664  ;
665  else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
666  ;
667  else if (av_strstart(url, "data", NULL) && !strncmp(proto_name, url + 5, strlen(proto_name)) && url[5 + strlen(proto_name)] == ':')
668  ;
669  else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
670  return AVERROR_INVALIDDATA;
671 
672  av_dict_copy(&tmp, *opts, 0);
673  av_dict_copy(&tmp, opts2, 0);
674 
675  if (is_http && c->http_persistent && *pb) {
676  ret = open_url_keepalive(c->ctx, pb, url, &tmp);
677  if (ret == AVERROR_EXIT) {
678  av_dict_free(&tmp);
679  return ret;
680  } else if (ret < 0) {
681  if (ret != AVERROR_EOF)
683  "keepalive request failed for '%s' with error: '%s' when opening url, retrying with new connection\n",
684  url, av_err2str(ret));
685  av_dict_copy(&tmp, *opts, 0);
686  av_dict_copy(&tmp, opts2, 0);
687  ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
688  }
689  } else {
690  ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
691  }
692  if (ret >= 0) {
693  // update cookies on http response with setcookies.
694  char *new_cookies = NULL;
695 
696  if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
697  av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
698 
699  if (new_cookies)
700  av_dict_set(opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
701  }
702 
703  av_dict_free(&tmp);
704 
705  if (is_http_out)
706  *is_http_out = is_http;
707 
708  return ret;
709 }
710 
711 static int parse_playlist(HLSContext *c, const char *url,
712  struct playlist *pls, AVIOContext *in)
713 {
714  int ret = 0, is_segment = 0, is_variant = 0;
715  int64_t duration = 0;
716  enum KeyType key_type = KEY_NONE;
717  uint8_t iv[16] = "";
718  int has_iv = 0;
719  char key[MAX_URL_SIZE] = "";
720  char line[MAX_URL_SIZE];
721  const char *ptr;
722  int close_in = 0;
723  int64_t seg_offset = 0;
724  int64_t seg_size = -1;
725  uint8_t *new_url = NULL;
726  struct variant_info variant_info;
727  char tmp_str[MAX_URL_SIZE];
728  struct segment *cur_init_section = NULL;
729  int is_http = av_strstart(url, "http", NULL);
730  struct segment **prev_segments = NULL;
731  int prev_n_segments = 0;
732  int64_t prev_start_seq_no = -1;
733 
734  if (is_http && !in && c->http_persistent && c->playlist_pb) {
735  in = c->playlist_pb;
736  ret = open_url_keepalive(c->ctx, &c->playlist_pb, url, NULL);
737  if (ret == AVERROR_EXIT) {
738  return ret;
739  } else if (ret < 0) {
740  if (ret != AVERROR_EOF)
741  av_log(c->ctx, AV_LOG_WARNING,
742  "keepalive request failed for '%s' with error: '%s' when parsing playlist\n",
743  url, av_err2str(ret));
744  in = NULL;
745  }
746  }
747 
748  if (!in) {
750  av_dict_copy(&opts, c->avio_opts, 0);
751 
752  if (c->http_persistent)
753  av_dict_set(&opts, "multiple_requests", "1", 0);
754 
755  ret = c->ctx->io_open(c->ctx, &in, url, AVIO_FLAG_READ, &opts);
756  av_dict_free(&opts);
757  if (ret < 0)
758  return ret;
759 
760  if (is_http && c->http_persistent)
761  c->playlist_pb = in;
762  else
763  close_in = 1;
764  }
765 
766  if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0)
767  url = new_url;
768 
769  ff_get_chomp_line(in, line, sizeof(line));
770  if (strcmp(line, "#EXTM3U")) {
771  ret = AVERROR_INVALIDDATA;
772  goto fail;
773  }
774 
775  if (pls) {
776  prev_start_seq_no = pls->start_seq_no;
777  prev_segments = pls->segments;
778  prev_n_segments = pls->n_segments;
779  pls->segments = NULL;
780  pls->n_segments = 0;
781 
782  pls->finished = 0;
783  pls->type = PLS_TYPE_UNSPECIFIED;
784  }
785  while (!avio_feof(in)) {
786  ff_get_chomp_line(in, line, sizeof(line));
787  if (av_strstart(line, "#EXT-X-STREAM-INF:", &ptr)) {
788  is_variant = 1;
789  memset(&variant_info, 0, sizeof(variant_info));
791  &variant_info);
792  } else if (av_strstart(line, "#EXT-X-KEY:", &ptr)) {
793  struct key_info info = {{0}};
795  &info);
796  key_type = KEY_NONE;
797  has_iv = 0;
798  if (!strcmp(info.method, "AES-128"))
799  key_type = KEY_AES_128;
800  if (!strcmp(info.method, "SAMPLE-AES"))
801  key_type = KEY_SAMPLE_AES;
802  if (!strncmp(info.iv, "0x", 2) || !strncmp(info.iv, "0X", 2)) {
803  ff_hex_to_data(iv, info.iv + 2);
804  has_iv = 1;
805  }
806  av_strlcpy(key, info.uri, sizeof(key));
807  } else if (av_strstart(line, "#EXT-X-MEDIA:", &ptr)) {
808  struct rendition_info info = {{0}};
810  &info);
811  new_rendition(c, &info, url);
812  } else if (av_strstart(line, "#EXT-X-TARGETDURATION:", &ptr)) {
813  ret = ensure_playlist(c, &pls, url);
814  if (ret < 0)
815  goto fail;
816  pls->target_duration = strtoll(ptr, NULL, 10) * AV_TIME_BASE;
817  } else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
818  uint64_t seq_no;
819  ret = ensure_playlist(c, &pls, url);
820  if (ret < 0)
821  goto fail;
822  seq_no = strtoull(ptr, NULL, 10);
823  if (seq_no > INT64_MAX) {
824  av_log(c->ctx, AV_LOG_DEBUG, "MEDIA-SEQUENCE higher than "
825  "INT64_MAX, mask out the highest bit\n");
826  seq_no &= INT64_MAX;
827  }
828  pls->start_seq_no = seq_no;
829  } else if (av_strstart(line, "#EXT-X-PLAYLIST-TYPE:", &ptr)) {
830  ret = ensure_playlist(c, &pls, url);
831  if (ret < 0)
832  goto fail;
833  if (!strcmp(ptr, "EVENT"))
834  pls->type = PLS_TYPE_EVENT;
835  else if (!strcmp(ptr, "VOD"))
836  pls->type = PLS_TYPE_VOD;
837  } else if (av_strstart(line, "#EXT-X-MAP:", &ptr)) {
838  struct init_section_info info = {{0}};
839  ret = ensure_playlist(c, &pls, url);
840  if (ret < 0)
841  goto fail;
843  &info);
844  cur_init_section = new_init_section(pls, &info, url);
845  cur_init_section->key_type = key_type;
846  if (has_iv) {
847  memcpy(cur_init_section->iv, iv, sizeof(iv));
848  } else {
849  int64_t seq = pls->start_seq_no + pls->n_segments;
850  memset(cur_init_section->iv, 0, sizeof(cur_init_section->iv));
851  AV_WB64(cur_init_section->iv + 8, seq);
852  }
853 
854  if (key_type != KEY_NONE) {
855  ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
856  if (!tmp_str[0]) {
857  av_free(cur_init_section);
858  ret = AVERROR_INVALIDDATA;
859  goto fail;
860  }
861  cur_init_section->key = av_strdup(tmp_str);
862  if (!cur_init_section->key) {
863  av_free(cur_init_section);
864  ret = AVERROR(ENOMEM);
865  goto fail;
866  }
867  } else {
868  cur_init_section->key = NULL;
869  }
870 
871  } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) {
872  if (pls)
873  pls->finished = 1;
874  } else if (av_strstart(line, "#EXTINF:", &ptr)) {
875  is_segment = 1;
876  duration = atof(ptr) * AV_TIME_BASE;
877  } else if (av_strstart(line, "#EXT-X-BYTERANGE:", &ptr)) {
878  seg_size = strtoll(ptr, NULL, 10);
879  ptr = strchr(ptr, '@');
880  if (ptr)
881  seg_offset = strtoll(ptr+1, NULL, 10);
882  } else if (av_strstart(line, "#", NULL)) {
883  av_log(c->ctx, AV_LOG_INFO, "Skip ('%s')\n", line);
884  continue;
885  } else if (line[0]) {
886  if (is_variant) {
887  if (!new_variant(c, &variant_info, line, url)) {
888  ret = AVERROR(ENOMEM);
889  goto fail;
890  }
891  is_variant = 0;
892  }
893  if (is_segment) {
894  struct segment *seg;
895  ret = ensure_playlist(c, &pls, url);
896  if (ret < 0)
897  goto fail;
898  seg = av_malloc(sizeof(struct segment));
899  if (!seg) {
900  ret = AVERROR(ENOMEM);
901  goto fail;
902  }
903  if (has_iv) {
904  memcpy(seg->iv, iv, sizeof(iv));
905  } else {
906  int64_t seq = pls->start_seq_no + pls->n_segments;
907  memset(seg->iv, 0, sizeof(seg->iv));
908  AV_WB64(seg->iv + 8, seq);
909  }
910 
911  if (key_type != KEY_NONE) {
912  ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
913  if (!tmp_str[0]) {
914  ret = AVERROR_INVALIDDATA;
915  av_free(seg);
916  goto fail;
917  }
918  seg->key = av_strdup(tmp_str);
919  if (!seg->key) {
920  av_free(seg);
921  ret = AVERROR(ENOMEM);
922  goto fail;
923  }
924  } else {
925  seg->key = NULL;
926  }
927 
928  ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, line);
929  if (!tmp_str[0]) {
930  ret = AVERROR_INVALIDDATA;
931  if (seg->key)
932  av_free(seg->key);
933  av_free(seg);
934  goto fail;
935  }
936  seg->url = av_strdup(tmp_str);
937  if (!seg->url) {
938  av_free(seg->key);
939  av_free(seg);
940  ret = AVERROR(ENOMEM);
941  goto fail;
942  }
943 
944  if (duration < 0.001 * AV_TIME_BASE) {
945  av_log(c->ctx, AV_LOG_WARNING, "Cannot get correct #EXTINF value of segment %s,"
946  " set to default value to 1ms.\n", seg->url);
947  duration = 0.001 * AV_TIME_BASE;
948  }
949  seg->duration = duration;
950  seg->key_type = key_type;
951  dynarray_add(&pls->segments, &pls->n_segments, seg);
952  is_segment = 0;
953 
954  seg->size = seg_size;
955  if (seg_size >= 0) {
956  seg->url_offset = seg_offset;
957  seg_offset += seg_size;
958  seg_size = -1;
959  } else {
960  seg->url_offset = 0;
961  seg_offset = 0;
962  }
963 
964  seg->init_section = cur_init_section;
965  }
966  }
967  }
968  if (prev_segments) {
969  if (pls->start_seq_no > prev_start_seq_no && c->first_timestamp != AV_NOPTS_VALUE) {
970  int64_t prev_timestamp = c->first_timestamp;
971  int i;
972  int64_t diff = pls->start_seq_no - prev_start_seq_no;
973  for (i = 0; i < prev_n_segments && i < diff; i++) {
974  c->first_timestamp += prev_segments[i]->duration;
975  }
976  av_log(c->ctx, AV_LOG_DEBUG, "Media sequence change (%"PRId64" -> %"PRId64")"
977  " reflected in first_timestamp: %"PRId64" -> %"PRId64"\n",
978  prev_start_seq_no, pls->start_seq_no,
979  prev_timestamp, c->first_timestamp);
980  } else if (pls->start_seq_no < prev_start_seq_no) {
981  av_log(c->ctx, AV_LOG_WARNING, "Media sequence changed unexpectedly: %"PRId64" -> %"PRId64"\n",
982  prev_start_seq_no, pls->start_seq_no);
983  }
984  free_segment_dynarray(prev_segments, prev_n_segments);
985  av_freep(&prev_segments);
986  }
987  if (pls)
989 
990 fail:
991  av_free(new_url);
992  if (close_in)
993  ff_format_io_close(c->ctx, &in);
994  c->ctx->ctx_flags = c->ctx->ctx_flags & ~(unsigned)AVFMTCTX_UNSEEKABLE;
995  if (!c->n_variants || !c->variants[0]->n_playlists ||
996  !(c->variants[0]->playlists[0]->finished ||
997  c->variants[0]->playlists[0]->type == PLS_TYPE_EVENT))
998  c->ctx->ctx_flags |= AVFMTCTX_UNSEEKABLE;
999  return ret;
1000 }
1001 
1002 static struct segment *current_segment(struct playlist *pls)
1003 {
1004  return pls->segments[pls->cur_seq_no - pls->start_seq_no];
1005 }
1006 
1007 static struct segment *next_segment(struct playlist *pls)
1008 {
1009  int64_t n = pls->cur_seq_no - pls->start_seq_no + 1;
1010  if (n >= pls->n_segments)
1011  return NULL;
1012  return pls->segments[n];
1013 }
1014 
1015 static int read_from_url(struct playlist *pls, struct segment *seg,
1016  uint8_t *buf, int buf_size)
1017 {
1018  int ret;
1019 
1020  /* limit read if the segment was only a part of a file */
1021  if (seg->size >= 0)
1022  buf_size = FFMIN(buf_size, seg->size - pls->cur_seg_offset);
1023 
1024  ret = avio_read(pls->input, buf, buf_size);
1025  if (ret > 0)
1026  pls->cur_seg_offset += ret;
1027 
1028  return ret;
1029 }
1030 
1031 /* Parse the raw ID3 data and pass contents to caller */
1033  AVDictionary **metadata, int64_t *dts,
1034  ID3v2ExtraMetaAPIC **apic, ID3v2ExtraMeta **extra_meta)
1035 {
1036  static const char id3_priv_owner_ts[] = "com.apple.streaming.transportStreamTimestamp";
1037  ID3v2ExtraMeta *meta;
1038 
1039  ff_id3v2_read_dict(pb, metadata, ID3v2_DEFAULT_MAGIC, extra_meta);
1040  for (meta = *extra_meta; meta; meta = meta->next) {
1041  if (!strcmp(meta->tag, "PRIV")) {
1042  ID3v2ExtraMetaPRIV *priv = &meta->data.priv;
1043  if (priv->datasize == 8 && !strcmp(priv->owner, id3_priv_owner_ts)) {
1044  /* 33-bit MPEG timestamp */
1045  int64_t ts = AV_RB64(priv->data);
1046  av_log(s, AV_LOG_DEBUG, "HLS ID3 audio timestamp %"PRId64"\n", ts);
1047  if ((ts & ~((1ULL << 33) - 1)) == 0)
1048  *dts = ts;
1049  else
1050  av_log(s, AV_LOG_ERROR, "Invalid HLS ID3 audio timestamp %"PRId64"\n", ts);
1051  }
1052  } else if (!strcmp(meta->tag, "APIC") && apic)
1053  *apic = &meta->data.apic;
1054  }
1055 }
1056 
1057 /* Check if the ID3 metadata contents have changed */
1058 static int id3_has_changed_values(struct playlist *pls, AVDictionary *metadata,
1059  ID3v2ExtraMetaAPIC *apic)
1060 {
1061  AVDictionaryEntry *entry = NULL;
1062  AVDictionaryEntry *oldentry;
1063  /* check that no keys have changed values */
1064  while ((entry = av_dict_get(metadata, "", entry, AV_DICT_IGNORE_SUFFIX))) {
1065  oldentry = av_dict_get(pls->id3_initial, entry->key, NULL, AV_DICT_MATCH_CASE);
1066  if (!oldentry || strcmp(oldentry->value, entry->value) != 0)
1067  return 1;
1068  }
1069 
1070  /* check if apic appeared */
1071  if (apic && (pls->ctx->nb_streams != 2 || !pls->ctx->streams[1]->attached_pic.data))
1072  return 1;
1073 
1074  if (apic) {
1075  int size = pls->ctx->streams[1]->attached_pic.size;
1076  if (size != apic->buf->size - AV_INPUT_BUFFER_PADDING_SIZE)
1077  return 1;
1078 
1079  if (memcmp(apic->buf->data, pls->ctx->streams[1]->attached_pic.data, size) != 0)
1080  return 1;
1081  }
1082 
1083  return 0;
1084 }
1085 
1086 /* Parse ID3 data and handle the found data */
1087 static void handle_id3(AVIOContext *pb, struct playlist *pls)
1088 {
1089  AVDictionary *metadata = NULL;
1090  ID3v2ExtraMetaAPIC *apic = NULL;
1091  ID3v2ExtraMeta *extra_meta = NULL;
1092  int64_t timestamp = AV_NOPTS_VALUE;
1093 
1094  parse_id3(pls->ctx, pb, &metadata, &timestamp, &apic, &extra_meta);
1095 
1096  if (timestamp != AV_NOPTS_VALUE) {
1097  pls->id3_mpegts_timestamp = timestamp;
1098  pls->id3_offset = 0;
1099  }
1100 
1101  if (!pls->id3_found) {
1102  /* initial ID3 tags */
1104  pls->id3_found = 1;
1105 
1106  /* get picture attachment and set text metadata */
1107  if (pls->ctx->nb_streams)
1108  ff_id3v2_parse_apic(pls->ctx, extra_meta);
1109  else
1110  /* demuxer not yet opened, defer picture attachment */
1111  pls->id3_deferred_extra = extra_meta;
1112 
1113  ff_id3v2_parse_priv_dict(&metadata, extra_meta);
1114  av_dict_copy(&pls->ctx->metadata, metadata, 0);
1115  pls->id3_initial = metadata;
1116 
1117  } else {
1118  if (!pls->id3_changed && id3_has_changed_values(pls, metadata, apic)) {
1119  avpriv_report_missing_feature(pls->parent, "Changing ID3 metadata in HLS audio elementary stream");
1120  pls->id3_changed = 1;
1121  }
1122  av_dict_free(&metadata);
1123  }
1124 
1125  if (!pls->id3_deferred_extra)
1126  ff_id3v2_free_extra_meta(&extra_meta);
1127 }
1128 
1129 static void intercept_id3(struct playlist *pls, uint8_t *buf,
1130  int buf_size, int *len)
1131 {
1132  /* intercept id3 tags, we do not want to pass them to the raw
1133  * demuxer on all segment switches */
1134  int bytes;
1135  int id3_buf_pos = 0;
1136  int fill_buf = 0;
1137  struct segment *seg = current_segment(pls);
1138 
1139  /* gather all the id3 tags */
1140  while (1) {
1141  /* see if we can retrieve enough data for ID3 header */
1142  if (*len < ID3v2_HEADER_SIZE && buf_size >= ID3v2_HEADER_SIZE) {
1143  bytes = read_from_url(pls, seg, buf + *len, ID3v2_HEADER_SIZE - *len);
1144  if (bytes > 0) {
1145 
1146  if (bytes == ID3v2_HEADER_SIZE - *len)
1147  /* no EOF yet, so fill the caller buffer again after
1148  * we have stripped the ID3 tags */
1149  fill_buf = 1;
1150 
1151  *len += bytes;
1152 
1153  } else if (*len <= 0) {
1154  /* error/EOF */
1155  *len = bytes;
1156  fill_buf = 0;
1157  }
1158  }
1159 
1160  if (*len < ID3v2_HEADER_SIZE)
1161  break;
1162 
1163  if (ff_id3v2_match(buf, ID3v2_DEFAULT_MAGIC)) {
1164  int64_t maxsize = seg->size >= 0 ? seg->size : 1024*1024;
1165  int taglen = ff_id3v2_tag_len(buf);
1166  int tag_got_bytes = FFMIN(taglen, *len);
1167  int remaining = taglen - tag_got_bytes;
1168 
1169  if (taglen > maxsize) {
1170  av_log(pls->parent, AV_LOG_ERROR, "Too large HLS ID3 tag (%d > %"PRId64" bytes)\n",
1171  taglen, maxsize);
1172  break;
1173  }
1174 
1175  /*
1176  * Copy the id3 tag to our temporary id3 buffer.
1177  * We could read a small id3 tag directly without memcpy, but
1178  * we would still need to copy the large tags, and handling
1179  * both of those cases together with the possibility for multiple
1180  * tags would make the handling a bit complex.
1181  */
1182  pls->id3_buf = av_fast_realloc(pls->id3_buf, &pls->id3_buf_size, id3_buf_pos + taglen);
1183  if (!pls->id3_buf)
1184  break;
1185  memcpy(pls->id3_buf + id3_buf_pos, buf, tag_got_bytes);
1186  id3_buf_pos += tag_got_bytes;
1187 
1188  /* strip the intercepted bytes */
1189  *len -= tag_got_bytes;
1190  memmove(buf, buf + tag_got_bytes, *len);
1191  av_log(pls->parent, AV_LOG_DEBUG, "Stripped %d HLS ID3 bytes\n", tag_got_bytes);
1192 
1193  if (remaining > 0) {
1194  /* read the rest of the tag in */
1195  if (read_from_url(pls, seg, pls->id3_buf + id3_buf_pos, remaining) != remaining)
1196  break;
1197  id3_buf_pos += remaining;
1198  av_log(pls->parent, AV_LOG_DEBUG, "Stripped additional %d HLS ID3 bytes\n", remaining);
1199  }
1200 
1201  } else {
1202  /* no more ID3 tags */
1203  break;
1204  }
1205  }
1206 
1207  /* re-fill buffer for the caller unless EOF */
1208  if (*len >= 0 && (fill_buf || *len == 0)) {
1209  bytes = read_from_url(pls, seg, buf + *len, buf_size - *len);
1210 
1211  /* ignore error if we already had some data */
1212  if (bytes >= 0)
1213  *len += bytes;
1214  else if (*len == 0)
1215  *len = bytes;
1216  }
1217 
1218  if (pls->id3_buf) {
1219  /* Now parse all the ID3 tags */
1220  AVIOContext id3ioctx;
1221  ffio_init_context(&id3ioctx, pls->id3_buf, id3_buf_pos, 0, NULL, NULL, NULL, NULL);
1222  handle_id3(&id3ioctx, pls);
1223  }
1224 
1225  if (pls->is_id3_timestamped == -1)
1227 }
1228 
1229 static int open_input(HLSContext *c, struct playlist *pls, struct segment *seg, AVIOContext **in)
1230 {
1231  AVDictionary *opts = NULL;
1232  int ret;
1233  int is_http = 0;
1234 
1235  if (c->http_persistent)
1236  av_dict_set(&opts, "multiple_requests", "1", 0);
1237 
1238  if (seg->size >= 0) {
1239  /* try to restrict the HTTP request to the part we want
1240  * (if this is in fact a HTTP request) */
1241  av_dict_set_int(&opts, "offset", seg->url_offset, 0);
1242  av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
1243  }
1244 
1245  av_log(pls->parent, AV_LOG_VERBOSE, "HLS request for url '%s', offset %"PRId64", playlist %d\n",
1246  seg->url, seg->url_offset, pls->index);
1247 
1248  if (seg->key_type == KEY_NONE) {
1249  ret = open_url(pls->parent, in, seg->url, &c->avio_opts, opts, &is_http);
1250  } else if (seg->key_type == KEY_AES_128) {
1251  char iv[33], key[33], url[MAX_URL_SIZE];
1252  if (strcmp(seg->key, pls->key_url)) {
1253  AVIOContext *pb = NULL;
1254  if (open_url(pls->parent, &pb, seg->key, &c->avio_opts, opts, NULL) == 0) {
1255  ret = avio_read(pb, pls->key, sizeof(pls->key));
1256  if (ret != sizeof(pls->key)) {
1257  av_log(pls->parent, AV_LOG_ERROR, "Unable to read key file %s\n",
1258  seg->key);
1259  }
1260  ff_format_io_close(pls->parent, &pb);
1261  } else {
1262  av_log(pls->parent, AV_LOG_ERROR, "Unable to open key file %s\n",
1263  seg->key);
1264  }
1265  av_strlcpy(pls->key_url, seg->key, sizeof(pls->key_url));
1266  }
1267  ff_data_to_hex(iv, seg->iv, sizeof(seg->iv), 0);
1268  ff_data_to_hex(key, pls->key, sizeof(pls->key), 0);
1269  iv[32] = key[32] = '\0';
1270  if (strstr(seg->url, "://"))
1271  snprintf(url, sizeof(url), "crypto+%s", seg->url);
1272  else
1273  snprintf(url, sizeof(url), "crypto:%s", seg->url);
1274 
1275  av_dict_set(&opts, "key", key, 0);
1276  av_dict_set(&opts, "iv", iv, 0);
1277 
1278  ret = open_url(pls->parent, in, url, &c->avio_opts, opts, &is_http);
1279  if (ret < 0) {
1280  goto cleanup;
1281  }
1282  ret = 0;
1283  } else if (seg->key_type == KEY_SAMPLE_AES) {
1284  av_log(pls->parent, AV_LOG_ERROR,
1285  "SAMPLE-AES encryption is not supported yet\n");
1286  ret = AVERROR_PATCHWELCOME;
1287  }
1288  else
1289  ret = AVERROR(ENOSYS);
1290 
1291  /* Seek to the requested position. If this was a HTTP request, the offset
1292  * should already be where want it to, but this allows e.g. local testing
1293  * without a HTTP server.
1294  *
1295  * This is not done for HTTP at all as avio_seek() does internal bookkeeping
1296  * of file offset which is out-of-sync with the actual offset when "offset"
1297  * AVOption is used with http protocol, causing the seek to not be a no-op
1298  * as would be expected. Wrong offset received from the server will not be
1299  * noticed without the call, though.
1300  */
1301  if (ret == 0 && !is_http && seg->url_offset) {
1302  int64_t seekret = avio_seek(*in, seg->url_offset, SEEK_SET);
1303  if (seekret < 0) {
1304  av_log(pls->parent, AV_LOG_ERROR, "Unable to seek to offset %"PRId64" of HLS segment '%s'\n", seg->url_offset, seg->url);
1305  ret = seekret;
1306  ff_format_io_close(pls->parent, in);
1307  }
1308  }
1309 
1310 cleanup:
1311  av_dict_free(&opts);
1312  pls->cur_seg_offset = 0;
1313  return ret;
1314 }
1315 
1316 static int update_init_section(struct playlist *pls, struct segment *seg)
1317 {
1318  static const int max_init_section_size = 1024*1024;
1319  HLSContext *c = pls->parent->priv_data;
1320  int64_t sec_size;
1321  int64_t urlsize;
1322  int ret;
1323 
1324  if (seg->init_section == pls->cur_init_section)
1325  return 0;
1326 
1327  pls->cur_init_section = NULL;
1328 
1329  if (!seg->init_section)
1330  return 0;
1331 
1332  ret = open_input(c, pls, seg->init_section, &pls->input);
1333  if (ret < 0) {
1335  "Failed to open an initialization section in playlist %d\n",
1336  pls->index);
1337  return ret;
1338  }
1339 
1340  if (seg->init_section->size >= 0)
1341  sec_size = seg->init_section->size;
1342  else if ((urlsize = avio_size(pls->input)) >= 0)
1343  sec_size = urlsize;
1344  else
1345  sec_size = max_init_section_size;
1346 
1347  av_log(pls->parent, AV_LOG_DEBUG,
1348  "Downloading an initialization section of size %"PRId64"\n",
1349  sec_size);
1350 
1351  sec_size = FFMIN(sec_size, max_init_section_size);
1352 
1353  av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
1354 
1355  ret = read_from_url(pls, seg->init_section, pls->init_sec_buf,
1356  pls->init_sec_buf_size);
1357  ff_format_io_close(pls->parent, &pls->input);
1358 
1359  if (ret < 0)
1360  return ret;
1361 
1362  pls->cur_init_section = seg->init_section;
1363  pls->init_sec_data_len = ret;
1364  pls->init_sec_buf_read_offset = 0;
1365 
1366  /* spec says audio elementary streams do not have media initialization
1367  * sections, so there should be no ID3 timestamps */
1368  pls->is_id3_timestamped = 0;
1369 
1370  return 0;
1371 }
1372 
1373 static int64_t default_reload_interval(struct playlist *pls)
1374 {
1375  return pls->n_segments > 0 ?
1376  pls->segments[pls->n_segments - 1]->duration :
1377  pls->target_duration;
1378 }
1379 
1380 static int playlist_needed(struct playlist *pls)
1381 {
1382  AVFormatContext *s = pls->parent;
1383  int i, j;
1384  int stream_needed = 0;
1385  int first_st;
1386 
1387  /* If there is no context or streams yet, the playlist is needed */
1388  if (!pls->ctx || !pls->n_main_streams)
1389  return 1;
1390 
1391  /* check if any of the streams in the playlist are needed */
1392  for (i = 0; i < pls->n_main_streams; i++) {
1393  if (pls->main_streams[i]->discard < AVDISCARD_ALL) {
1394  stream_needed = 1;
1395  break;
1396  }
1397  }
1398 
1399  /* If all streams in the playlist were discarded, the playlist is not
1400  * needed (regardless of whether whole programs are discarded or not). */
1401  if (!stream_needed)
1402  return 0;
1403 
1404  /* Otherwise, check if all the programs (variants) this playlist is in are
1405  * discarded. Since all streams in the playlist are part of the same programs
1406  * we can just check the programs of the first stream. */
1407 
1408  first_st = pls->main_streams[0]->index;
1409 
1410  for (i = 0; i < s->nb_programs; i++) {
1411  AVProgram *program = s->programs[i];
1412  if (program->discard < AVDISCARD_ALL) {
1413  for (j = 0; j < program->nb_stream_indexes; j++) {
1414  if (program->stream_index[j] == first_st) {
1415  /* playlist is in an undiscarded program */
1416  return 1;
1417  }
1418  }
1419  }
1420  }
1421 
1422  /* some streams were not discarded but all the programs were */
1423  return 0;
1424 }
1425 
1426 static int read_data(void *opaque, uint8_t *buf, int buf_size)
1427 {
1428  struct playlist *v = opaque;
1429  HLSContext *c = v->parent->priv_data;
1430  int ret;
1431  int just_opened = 0;
1432  int reload_count = 0;
1433  struct segment *seg;
1434 
1435 restart:
1436  if (!v->needed)
1437  return AVERROR_EOF;
1438 
1439  if (!v->input || (c->http_persistent && v->input_read_done)) {
1440  int64_t reload_interval;
1441 
1442  /* Check that the playlist is still needed before opening a new
1443  * segment. */
1444  v->needed = playlist_needed(v);
1445 
1446  if (!v->needed) {
1447  av_log(v->parent, AV_LOG_INFO, "No longer receiving playlist %d ('%s')\n",
1448  v->index, v->url);
1449  return AVERROR_EOF;
1450  }
1451 
1452  /* If this is a live stream and the reload interval has elapsed since
1453  * the last playlist reload, reload the playlists now. */
1454  reload_interval = default_reload_interval(v);
1455 
1456 reload:
1457  reload_count++;
1458  if (reload_count > c->max_reload)
1459  return AVERROR_EOF;
1460  if (!v->finished &&
1461  av_gettime_relative() - v->last_load_time >= reload_interval) {
1462  if ((ret = parse_playlist(c, v->url, v, NULL)) < 0) {
1463  if (ret != AVERROR_EXIT)
1464  av_log(v->parent, AV_LOG_WARNING, "Failed to reload playlist %d\n",
1465  v->index);
1466  return ret;
1467  }
1468  /* If we need to reload the playlist again below (if
1469  * there's still no more segments), switch to a reload
1470  * interval of half the target duration. */
1471  reload_interval = v->target_duration / 2;
1472  }
1473  if (v->cur_seq_no < v->start_seq_no) {
1475  "skipping %"PRId64" segments ahead, expired from playlists\n",
1476  v->start_seq_no - v->cur_seq_no);
1477  v->cur_seq_no = v->start_seq_no;
1478  }
1479  if (v->cur_seq_no > v->last_seq_no) {
1480  v->last_seq_no = v->cur_seq_no;
1481  v->m3u8_hold_counters = 0;
1482  } else if (v->last_seq_no == v->cur_seq_no) {
1483  v->m3u8_hold_counters++;
1484  if (v->m3u8_hold_counters >= c->m3u8_hold_counters) {
1485  return AVERROR_EOF;
1486  }
1487  } else {
1488  av_log(v->parent, AV_LOG_WARNING, "maybe the m3u8 list sequence have been wraped.\n");
1489  }
1490  if (v->cur_seq_no >= v->start_seq_no + v->n_segments) {
1491  if (v->finished)
1492  return AVERROR_EOF;
1493  while (av_gettime_relative() - v->last_load_time < reload_interval) {
1494  if (ff_check_interrupt(c->interrupt_callback))
1495  return AVERROR_EXIT;
1496  av_usleep(100*1000);
1497  }
1498  /* Enough time has elapsed since the last reload */
1499  goto reload;
1500  }
1501 
1502  v->input_read_done = 0;
1503  seg = current_segment(v);
1504 
1505  /* load/update Media Initialization Section, if any */
1506  ret = update_init_section(v, seg);
1507  if (ret)
1508  return ret;
1509 
1510  if (c->http_multiple == 1 && v->input_next_requested) {
1511  FFSWAP(AVIOContext *, v->input, v->input_next);
1512  v->cur_seg_offset = 0;
1513  v->input_next_requested = 0;
1514  ret = 0;
1515  } else {
1516  ret = open_input(c, v, seg, &v->input);
1517  }
1518  if (ret < 0) {
1519  if (ff_check_interrupt(c->interrupt_callback))
1520  return AVERROR_EXIT;
1521  av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1522  v->cur_seq_no,
1523  v->index);
1524  v->cur_seq_no += 1;
1525  goto reload;
1526  }
1527  just_opened = 1;
1528  }
1529 
1530  if (c->http_multiple == -1) {
1531  uint8_t *http_version_opt = NULL;
1532  int r = av_opt_get(v->input, "http_version", AV_OPT_SEARCH_CHILDREN, &http_version_opt);
1533  if (r >= 0) {
1534  c->http_multiple = (!strncmp((const char *)http_version_opt, "1.1", 3) || !strncmp((const char *)http_version_opt, "2.0", 3));
1535  av_freep(&http_version_opt);
1536  }
1537  }
1538 
1539  seg = next_segment(v);
1540  if (c->http_multiple == 1 && !v->input_next_requested &&
1541  seg && seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1542  ret = open_input(c, v, seg, &v->input_next);
1543  if (ret < 0) {
1544  if (ff_check_interrupt(c->interrupt_callback))
1545  return AVERROR_EXIT;
1546  av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1547  v->cur_seq_no + 1,
1548  v->index);
1549  } else {
1550  v->input_next_requested = 1;
1551  }
1552  }
1553 
1555  /* Push init section out first before first actual segment */
1556  int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
1557  memcpy(buf, v->init_sec_buf, copy_size);
1558  v->init_sec_buf_read_offset += copy_size;
1559  return copy_size;
1560  }
1561 
1562  seg = current_segment(v);
1563  ret = read_from_url(v, seg, buf, buf_size);
1564  if (ret > 0) {
1565  if (just_opened && v->is_id3_timestamped != 0) {
1566  /* Intercept ID3 tags here, elementary audio streams are required
1567  * to convey timestamps using them in the beginning of each segment. */
1568  intercept_id3(v, buf, buf_size, &ret);
1569  }
1570 
1571  return ret;
1572  }
1573  if (c->http_persistent &&
1574  seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1575  v->input_read_done = 1;
1576  } else {
1577  ff_format_io_close(v->parent, &v->input);
1578  }
1579  v->cur_seq_no++;
1580 
1581  c->cur_seq_no = v->cur_seq_no;
1582 
1583  goto restart;
1584 }
1585 
1586 static void add_renditions_to_variant(HLSContext *c, struct variant *var,
1587  enum AVMediaType type, const char *group_id)
1588 {
1589  int i;
1590 
1591  for (i = 0; i < c->n_renditions; i++) {
1592  struct rendition *rend = c->renditions[i];
1593 
1594  if (rend->type == type && !strcmp(rend->group_id, group_id)) {
1595 
1596  if (rend->playlist)
1597  /* rendition is an external playlist
1598  * => add the playlist to the variant */
1599  dynarray_add(&var->playlists, &var->n_playlists, rend->playlist);
1600  else
1601  /* rendition is part of the variant main Media Playlist
1602  * => add the rendition to the main Media Playlist */
1603  dynarray_add(&var->playlists[0]->renditions,
1604  &var->playlists[0]->n_renditions,
1605  rend);
1606  }
1607  }
1608 }
1609 
1611  enum AVMediaType type)
1612 {
1613  int rend_idx = 0;
1614  int i;
1615 
1616  for (i = 0; i < pls->n_main_streams; i++) {
1617  AVStream *st = pls->main_streams[i];
1618 
1619  if (st->codecpar->codec_type != type)
1620  continue;
1621 
1622  for (; rend_idx < pls->n_renditions; rend_idx++) {
1623  struct rendition *rend = pls->renditions[rend_idx];
1624 
1625  if (rend->type != type)
1626  continue;
1627 
1628  if (rend->language[0])
1629  av_dict_set(&st->metadata, "language", rend->language, 0);
1630  if (rend->name[0])
1631  av_dict_set(&st->metadata, "comment", rend->name, 0);
1632 
1633  st->disposition |= rend->disposition;
1634  }
1635  if (rend_idx >=pls->n_renditions)
1636  break;
1637  }
1638 }
1639 
1640 /* if timestamp was in valid range: returns 1 and sets seq_no
1641  * if not: returns 0 and sets seq_no to closest segment */
1643  int64_t timestamp, int64_t *seq_no)
1644 {
1645  int i;
1646  int64_t pos = c->first_timestamp == AV_NOPTS_VALUE ?
1647  0 : c->first_timestamp;
1648 
1649  if (timestamp < pos) {
1650  *seq_no = pls->start_seq_no;
1651  return 0;
1652  }
1653 
1654  for (i = 0; i < pls->n_segments; i++) {
1655  int64_t diff = pos + pls->segments[i]->duration - timestamp;
1656  if (diff > 0) {
1657  *seq_no = pls->start_seq_no + i;
1658  return 1;
1659  }
1660  pos += pls->segments[i]->duration;
1661  }
1662 
1663  *seq_no = pls->start_seq_no + pls->n_segments - 1;
1664 
1665  return 0;
1666 }
1667 
1668 static int64_t select_cur_seq_no(HLSContext *c, struct playlist *pls)
1669 {
1670  int64_t seq_no;
1671 
1672  if (!pls->finished && !c->first_packet &&
1674  /* reload the playlist since it was suspended */
1675  parse_playlist(c, pls->url, pls, NULL);
1676 
1677  /* If playback is already in progress (we are just selecting a new
1678  * playlist) and this is a complete file, find the matching segment
1679  * by counting durations. */
1680  if (pls->finished && c->cur_timestamp != AV_NOPTS_VALUE) {
1681  find_timestamp_in_playlist(c, pls, c->cur_timestamp, &seq_no);
1682  return seq_no;
1683  }
1684 
1685  if (!pls->finished) {
1686  if (!c->first_packet && /* we are doing a segment selection during playback */
1687  c->cur_seq_no >= pls->start_seq_no &&
1688  c->cur_seq_no < pls->start_seq_no + pls->n_segments)
1689  /* While spec 3.4.3 says that we cannot assume anything about the
1690  * content at the same sequence number on different playlists,
1691  * in practice this seems to work and doing it otherwise would
1692  * require us to download a segment to inspect its timestamps. */
1693  return c->cur_seq_no;
1694 
1695  /* If this is a live stream, start live_start_index segments from the
1696  * start or end */
1697  if (c->live_start_index < 0)
1698  return pls->start_seq_no + FFMAX(pls->n_segments + c->live_start_index, 0);
1699  else
1700  return pls->start_seq_no + FFMIN(c->live_start_index, pls->n_segments - 1);
1701  }
1702 
1703  /* Otherwise just start on the first segment. */
1704  return pls->start_seq_no;
1705 }
1706 
1708 {
1709  HLSContext *c = s->priv_data;
1710  static const char * const opts[] = {
1711  "headers", "http_proxy", "user_agent", "cookies", "referer", "rw_timeout", "icy", NULL };
1712  const char * const * opt = opts;
1713  uint8_t *buf;
1714  int ret = 0;
1715 
1716  while (*opt) {
1717  if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN | AV_OPT_ALLOW_NULL, &buf) >= 0) {
1718  ret = av_dict_set(&c->avio_opts, *opt, buf,
1720  if (ret < 0)
1721  return ret;
1722  }
1723  opt++;
1724  }
1725 
1726  return ret;
1727 }
1728 
1729 static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
1730  int flags, AVDictionary **opts)
1731 {
1733  "A HLS playlist item '%s' referred to an external file '%s'. "
1734  "Opening this file was forbidden for security reasons\n",
1735  s->url, url);
1736  return AVERROR(EPERM);
1737 }
1738 
1739 static void add_stream_to_programs(AVFormatContext *s, struct playlist *pls, AVStream *stream)
1740 {
1741  HLSContext *c = s->priv_data;
1742  int i, j;
1743  int bandwidth = -1;
1744 
1745  for (i = 0; i < c->n_variants; i++) {
1746  struct variant *v = c->variants[i];
1747 
1748  for (j = 0; j < v->n_playlists; j++) {
1749  if (v->playlists[j] != pls)
1750  continue;
1751 
1752  av_program_add_stream_index(s, i, stream->index);
1753 
1754  if (bandwidth < 0)
1755  bandwidth = v->bandwidth;
1756  else if (bandwidth != v->bandwidth)
1757  bandwidth = -1; /* stream in multiple variants with different bandwidths */
1758  }
1759  }
1760 
1761  if (bandwidth >= 0)
1762  av_dict_set_int(&stream->metadata, "variant_bitrate", bandwidth, 0);
1763 }
1764 
1766 {
1767  int err;
1768 
1769  err = avcodec_parameters_copy(st->codecpar, ist->codecpar);
1770  if (err < 0)
1771  return err;
1772 
1773  if (pls->is_id3_timestamped) /* custom timestamps via id3 */
1774  avpriv_set_pts_info(st, 33, 1, MPEG_TIME_BASE);
1775  else
1777 
1778  // copy disposition
1779  st->disposition = ist->disposition;
1780 
1781  // copy side data
1782  for (int i = 0; i < ist->nb_side_data; i++) {
1783  const AVPacketSideData *sd_src = &ist->side_data[i];
1784  uint8_t *dst_data;
1785 
1786  dst_data = av_stream_new_side_data(st, sd_src->type, sd_src->size);
1787  if (!dst_data)
1788  return AVERROR(ENOMEM);
1789  memcpy(dst_data, sd_src->data, sd_src->size);
1790  }
1791 
1792  st->internal->need_context_update = 1;
1793 
1794  return 0;
1795 }
1796 
1797 /* add new subdemuxer streams to our context, if any */
1799 {
1800  int err;
1801 
1802  while (pls->n_main_streams < pls->ctx->nb_streams) {
1803  int ist_idx = pls->n_main_streams;
1805  AVStream *ist = pls->ctx->streams[ist_idx];
1806 
1807  if (!st)
1808  return AVERROR(ENOMEM);
1809 
1810  st->id = pls->index;
1811  dynarray_add(&pls->main_streams, &pls->n_main_streams, st);
1812 
1813  add_stream_to_programs(s, pls, st);
1814 
1815  err = set_stream_info_from_input_stream(st, pls, ist);
1816  if (err < 0)
1817  return err;
1818  }
1819 
1820  return 0;
1821 }
1822 
1824 {
1825  HLSContext *c = s->priv_data;
1826  int flag_needed = 0;
1827  int i;
1828 
1829  for (i = 0; i < c->n_playlists; i++) {
1830  struct playlist *pls = c->playlists[i];
1831 
1832  if (pls->has_noheader_flag) {
1833  flag_needed = 1;
1834  break;
1835  }
1836  }
1837 
1838  if (flag_needed)
1839  s->ctx_flags |= AVFMTCTX_NOHEADER;
1840  else
1841  s->ctx_flags &= ~AVFMTCTX_NOHEADER;
1842 }
1843 
1845 {
1846  HLSContext *c = s->priv_data;
1847 
1851 
1852  av_dict_free(&c->avio_opts);
1853  ff_format_io_close(c->ctx, &c->playlist_pb);
1854 
1855  return 0;
1856 }
1857 
1859 {
1860  HLSContext *c = s->priv_data;
1861  int ret = 0, i;
1862  int64_t highest_cur_seq_no = 0;
1863 
1864  c->ctx = s;
1865  c->interrupt_callback = &s->interrupt_callback;
1866 
1867  c->first_packet = 1;
1868  c->first_timestamp = AV_NOPTS_VALUE;
1869  c->cur_timestamp = AV_NOPTS_VALUE;
1870 
1871  if ((ret = save_avio_options(s)) < 0)
1872  goto fail;
1873 
1874  /* XXX: Some HLS servers don't like being sent the range header,
1875  in this case, need to setting http_seekable = 0 to disable
1876  the range header */
1877  av_dict_set_int(&c->avio_opts, "seekable", c->http_seekable, 0);
1878 
1879  if ((ret = parse_playlist(c, s->url, NULL, s->pb)) < 0)
1880  goto fail;
1881 
1882  if (c->n_variants == 0) {
1883  av_log(s, AV_LOG_WARNING, "Empty playlist\n");
1884  ret = AVERROR_EOF;
1885  goto fail;
1886  }
1887  /* If the playlist only contained playlists (Master Playlist),
1888  * parse each individual playlist. */
1889  if (c->n_playlists > 1 || c->playlists[0]->n_segments == 0) {
1890  for (i = 0; i < c->n_playlists; i++) {
1891  struct playlist *pls = c->playlists[i];
1892  pls->m3u8_hold_counters = 0;
1893  if ((ret = parse_playlist(c, pls->url, pls, NULL)) < 0) {
1894  av_log(s, AV_LOG_WARNING, "parse_playlist error %s [%s]\n", av_err2str(ret), pls->url);
1895  pls->broken = 1;
1896  if (c->n_playlists > 1)
1897  continue;
1898  goto fail;
1899  }
1900  }
1901  }
1902 
1903  for (i = 0; i < c->n_variants; i++) {
1904  if (c->variants[i]->playlists[0]->n_segments == 0) {
1905  av_log(s, AV_LOG_WARNING, "Empty segment [%s]\n", c->variants[i]->playlists[0]->url);
1906  c->variants[i]->playlists[0]->broken = 1;
1907  }
1908  }
1909 
1910  /* If this isn't a live stream, calculate the total duration of the
1911  * stream. */
1912  if (c->variants[0]->playlists[0]->finished) {
1913  int64_t duration = 0;
1914  for (i = 0; i < c->variants[0]->playlists[0]->n_segments; i++)
1915  duration += c->variants[0]->playlists[0]->segments[i]->duration;
1916  s->duration = duration;
1917  }
1918 
1919  /* Associate renditions with variants */
1920  for (i = 0; i < c->n_variants; i++) {
1921  struct variant *var = c->variants[i];
1922 
1923  if (var->audio_group[0])
1925  if (var->video_group[0])
1927  if (var->subtitles_group[0])
1929  }
1930 
1931  /* Create a program for each variant */
1932  for (i = 0; i < c->n_variants; i++) {
1933  struct variant *v = c->variants[i];
1934  AVProgram *program;
1935 
1936  program = av_new_program(s, i);
1937  if (!program)
1938  goto fail;
1939  av_dict_set_int(&program->metadata, "variant_bitrate", v->bandwidth, 0);
1940  }
1941 
1942  /* Select the starting segments */
1943  for (i = 0; i < c->n_playlists; i++) {
1944  struct playlist *pls = c->playlists[i];
1945 
1946  if (pls->n_segments == 0)
1947  continue;
1948 
1949  pls->cur_seq_no = select_cur_seq_no(c, pls);
1950  highest_cur_seq_no = FFMAX(highest_cur_seq_no, pls->cur_seq_no);
1951  }
1952 
1953  /* Open the demuxer for each playlist */
1954  for (i = 0; i < c->n_playlists; i++) {
1955  struct playlist *pls = c->playlists[i];
1956  char *url;
1957  ff_const59 AVInputFormat *in_fmt = NULL;
1958 
1959  if (!(pls->ctx = avformat_alloc_context())) {
1960  ret = AVERROR(ENOMEM);
1961  goto fail;
1962  }
1963 
1964  if (pls->n_segments == 0)
1965  continue;
1966 
1967  pls->index = i;
1968  pls->needed = 1;
1969  pls->parent = s;
1970 
1971  /*
1972  * If this is a live stream and this playlist looks like it is one segment
1973  * behind, try to sync it up so that every substream starts at the same
1974  * time position (so e.g. avformat_find_stream_info() will see packets from
1975  * all active streams within the first few seconds). This is not very generic,
1976  * though, as the sequence numbers are technically independent.
1977  */
1978  if (!pls->finished && pls->cur_seq_no == highest_cur_seq_no - 1 &&
1979  highest_cur_seq_no < pls->start_seq_no + pls->n_segments) {
1980  pls->cur_seq_no = highest_cur_seq_no;
1981  }
1982 
1984  if (!pls->read_buffer){
1985  ret = AVERROR(ENOMEM);
1986  avformat_free_context(pls->ctx);
1987  pls->ctx = NULL;
1988  goto fail;
1989  }
1990  ffio_init_context(&pls->pb, pls->read_buffer, INITIAL_BUFFER_SIZE, 0, pls,
1991  read_data, NULL, NULL);
1992  pls->ctx->probesize = s->probesize > 0 ? s->probesize : 1024 * 4;
1993  pls->ctx->max_analyze_duration = s->max_analyze_duration > 0 ? s->max_analyze_duration : 4 * AV_TIME_BASE;
1994  pls->ctx->interrupt_callback = s->interrupt_callback;
1995  url = av_strdup(pls->segments[0]->url);
1996  ret = av_probe_input_buffer(&pls->pb, &in_fmt, url, NULL, 0, 0);
1997  if (ret < 0) {
1998  /* Free the ctx - it isn't initialized properly at this point,
1999  * so avformat_close_input shouldn't be called. If
2000  * avformat_open_input fails below, it frees and zeros the
2001  * context, so it doesn't need any special treatment like this. */
2002  av_log(s, AV_LOG_ERROR, "Error when loading first segment '%s'\n", url);
2003  avformat_free_context(pls->ctx);
2004  pls->ctx = NULL;
2005  av_free(url);
2006  goto fail;
2007  }
2008  av_free(url);
2009  pls->ctx->pb = &pls->pb;
2010  pls->ctx->io_open = nested_io_open;
2011  pls->ctx->flags |= s->flags & ~AVFMT_FLAG_CUSTOM_IO;
2012 
2013  if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
2014  goto fail;
2015 
2016  ret = avformat_open_input(&pls->ctx, pls->segments[0]->url, in_fmt, NULL);
2017  if (ret < 0)
2018  goto fail;
2019 
2020  if (pls->id3_deferred_extra && pls->ctx->nb_streams == 1) {
2025  }
2026 
2027  if (pls->is_id3_timestamped == -1)
2028  av_log(s, AV_LOG_WARNING, "No expected HTTP requests have been made\n");
2029 
2030  /*
2031  * For ID3 timestamped raw audio streams we need to detect the packet
2032  * durations to calculate timestamps in fill_timing_for_id3_timestamped_stream(),
2033  * but for other streams we can rely on our user calling avformat_find_stream_info()
2034  * on us if they want to.
2035  */
2036  if (pls->is_id3_timestamped || (pls->n_renditions > 0 && pls->renditions[0]->type == AVMEDIA_TYPE_AUDIO)) {
2037  ret = avformat_find_stream_info(pls->ctx, NULL);
2038  if (ret < 0)
2039  goto fail;
2040  }
2041 
2042  pls->has_noheader_flag = !!(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER);
2043 
2044  /* Create new AVStreams for each stream in this playlist */
2045  ret = update_streams_from_subdemuxer(s, pls);
2046  if (ret < 0)
2047  goto fail;
2048 
2049  /*
2050  * Copy any metadata from playlist to main streams, but do not set
2051  * event flags.
2052  */
2053  if (pls->n_main_streams)
2054  av_dict_copy(&pls->main_streams[0]->metadata, pls->ctx->metadata, 0);
2055 
2059  }
2060 
2062 
2063  return 0;
2064 fail:
2065  hls_close(s);
2066  return ret;
2067 }
2068 
2069 static int recheck_discard_flags(AVFormatContext *s, int first)
2070 {
2071  HLSContext *c = s->priv_data;
2072  int i, changed = 0;
2073  int cur_needed;
2074 
2075  /* Check if any new streams are needed */
2076  for (i = 0; i < c->n_playlists; i++) {
2077  struct playlist *pls = c->playlists[i];
2078 
2079  cur_needed = playlist_needed(c->playlists[i]);
2080 
2081  if (pls->broken) {
2082  continue;
2083  }
2084  if (cur_needed && !pls->needed) {
2085  pls->needed = 1;
2086  changed = 1;
2087  pls->cur_seq_no = select_cur_seq_no(c, pls);
2088  pls->pb.eof_reached = 0;
2089  if (c->cur_timestamp != AV_NOPTS_VALUE) {
2090  /* catch up */
2091  pls->seek_timestamp = c->cur_timestamp;
2092  pls->seek_flags = AVSEEK_FLAG_ANY;
2093  pls->seek_stream_index = -1;
2094  }
2095  av_log(s, AV_LOG_INFO, "Now receiving playlist %d, segment %"PRId64"\n", i, pls->cur_seq_no);
2096  } else if (first && !cur_needed && pls->needed) {
2097  ff_format_io_close(pls->parent, &pls->input);
2098  pls->input_read_done = 0;
2099  ff_format_io_close(pls->parent, &pls->input_next);
2100  pls->input_next_requested = 0;
2101  pls->needed = 0;
2102  changed = 1;
2103  av_log(s, AV_LOG_INFO, "No longer receiving playlist %d\n", i);
2104  }
2105  }
2106  return changed;
2107 }
2108 
2110 {
2111  if (pls->id3_offset >= 0) {
2112  pls->pkt->dts = pls->id3_mpegts_timestamp +
2113  av_rescale_q(pls->id3_offset,
2114  pls->ctx->streams[pls->pkt->stream_index]->time_base,
2116  if (pls->pkt->duration)
2117  pls->id3_offset += pls->pkt->duration;
2118  else
2119  pls->id3_offset = -1;
2120  } else {
2121  /* there have been packets with unknown duration
2122  * since the last id3 tag, should not normally happen */
2123  pls->pkt->dts = AV_NOPTS_VALUE;
2124  }
2125 
2126  if (pls->pkt->duration)
2127  pls->pkt->duration = av_rescale_q(pls->pkt->duration,
2128  pls->ctx->streams[pls->pkt->stream_index]->time_base,
2130 
2131  pls->pkt->pts = AV_NOPTS_VALUE;
2132 }
2133 
2134 static AVRational get_timebase(struct playlist *pls)
2135 {
2136  if (pls->is_id3_timestamped)
2137  return MPEG_TIME_BASE_Q;
2138 
2139  return pls->ctx->streams[pls->pkt->stream_index]->time_base;
2140 }
2141 
2142 static int compare_ts_with_wrapdetect(int64_t ts_a, struct playlist *pls_a,
2143  int64_t ts_b, struct playlist *pls_b)
2144 {
2145  int64_t scaled_ts_a = av_rescale_q(ts_a, get_timebase(pls_a), MPEG_TIME_BASE_Q);
2146  int64_t scaled_ts_b = av_rescale_q(ts_b, get_timebase(pls_b), MPEG_TIME_BASE_Q);
2147 
2148  return av_compare_mod(scaled_ts_a, scaled_ts_b, 1LL << 33);
2149 }
2150 
2152 {
2153  HLSContext *c = s->priv_data;
2154  int ret, i, minplaylist = -1;
2155 
2156  recheck_discard_flags(s, c->first_packet);
2157  c->first_packet = 0;
2158 
2159  for (i = 0; i < c->n_playlists; i++) {
2160  struct playlist *pls = c->playlists[i];
2161  /* Make sure we've got one buffered packet from each open playlist
2162  * stream */
2163  if (pls->needed && !pls->pkt->data) {
2164  while (1) {
2165  int64_t ts_diff;
2166  AVRational tb;
2167  ret = av_read_frame(pls->ctx, pls->pkt);
2168  if (ret < 0) {
2169  if (!avio_feof(&pls->pb) && ret != AVERROR_EOF)
2170  return ret;
2171  break;
2172  } else {
2173  /* stream_index check prevents matching picture attachments etc. */
2174  if (pls->is_id3_timestamped && pls->pkt->stream_index == 0) {
2175  /* audio elementary streams are id3 timestamped */
2177  }
2178 
2179  if (c->first_timestamp == AV_NOPTS_VALUE &&
2180  pls->pkt->dts != AV_NOPTS_VALUE)
2181  c->first_timestamp = av_rescale_q(pls->pkt->dts,
2183  }
2184 
2185  if (pls->seek_timestamp == AV_NOPTS_VALUE)
2186  break;
2187 
2188  if (pls->seek_stream_index < 0 ||
2189  pls->seek_stream_index == pls->pkt->stream_index) {
2190 
2191  if (pls->pkt->dts == AV_NOPTS_VALUE) {
2193  break;
2194  }
2195 
2196  tb = get_timebase(pls);
2197  ts_diff = av_rescale_rnd(pls->pkt->dts, AV_TIME_BASE,
2198  tb.den, AV_ROUND_DOWN) -
2199  pls->seek_timestamp;
2200  if (ts_diff >= 0 && (pls->seek_flags & AVSEEK_FLAG_ANY ||
2201  pls->pkt->flags & AV_PKT_FLAG_KEY)) {
2203  break;
2204  }
2205  }
2206  av_packet_unref(pls->pkt);
2207  }
2208  }
2209  /* Check if this stream has the packet with the lowest dts */
2210  if (pls->pkt->data) {
2211  struct playlist *minpls = minplaylist < 0 ?
2212  NULL : c->playlists[minplaylist];
2213  if (minplaylist < 0) {
2214  minplaylist = i;
2215  } else {
2216  int64_t dts = pls->pkt->dts;
2217  int64_t mindts = minpls->pkt->dts;
2218 
2219  if (dts == AV_NOPTS_VALUE ||
2220  (mindts != AV_NOPTS_VALUE && compare_ts_with_wrapdetect(dts, pls, mindts, minpls) < 0))
2221  minplaylist = i;
2222  }
2223  }
2224  }
2225 
2226  /* If we got a packet, return it */
2227  if (minplaylist >= 0) {
2228  struct playlist *pls = c->playlists[minplaylist];
2229  AVStream *ist;
2230  AVStream *st;
2231 
2232  ret = update_streams_from_subdemuxer(s, pls);
2233  if (ret < 0) {
2234  av_packet_unref(pls->pkt);
2235  return ret;
2236  }
2237 
2238  // If sub-demuxer reports updated metadata, copy it to the first stream
2239  // and set its AVSTREAM_EVENT_FLAG_METADATA_UPDATED flag.
2241  if (pls->n_main_streams) {
2242  st = pls->main_streams[0];
2243  av_dict_copy(&st->metadata, pls->ctx->metadata, 0);
2245  }
2247  }
2248 
2249  /* check if noheader flag has been cleared by the subdemuxer */
2250  if (pls->has_noheader_flag && !(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER)) {
2251  pls->has_noheader_flag = 0;
2253  }
2254 
2255  if (pls->pkt->stream_index >= pls->n_main_streams) {
2256  av_log(s, AV_LOG_ERROR, "stream index inconsistency: index %d, %d main streams, %d subdemuxer streams\n",
2257  pls->pkt->stream_index, pls->n_main_streams, pls->ctx->nb_streams);
2258  av_packet_unref(pls->pkt);
2259  return AVERROR_BUG;
2260  }
2261 
2262  ist = pls->ctx->streams[pls->pkt->stream_index];
2263  st = pls->main_streams[pls->pkt->stream_index];
2264 
2265  av_packet_move_ref(pkt, pls->pkt);
2266  pkt->stream_index = st->index;
2267 
2268  if (pkt->dts != AV_NOPTS_VALUE)
2269  c->cur_timestamp = av_rescale_q(pkt->dts,
2270  ist->time_base,
2271  AV_TIME_BASE_Q);
2272 
2273  /* There may be more situations where this would be useful, but this at least
2274  * handles newly probed codecs properly (i.e. request_probe by mpegts). */
2275  if (ist->codecpar->codec_id != st->codecpar->codec_id) {
2276  ret = set_stream_info_from_input_stream(st, pls, ist);
2277  if (ret < 0) {
2278  return ret;
2279  }
2280  }
2281 
2282  return 0;
2283  }
2284  return AVERROR_EOF;
2285 }
2286 
2287 static int hls_read_seek(AVFormatContext *s, int stream_index,
2288  int64_t timestamp, int flags)
2289 {
2290  HLSContext *c = s->priv_data;
2291  struct playlist *seek_pls = NULL;
2292  int i, j;
2293  int stream_subdemuxer_index;
2294  int64_t first_timestamp, seek_timestamp, duration;
2295  int64_t seq_no;
2296 
2297  if ((flags & AVSEEK_FLAG_BYTE) || (c->ctx->ctx_flags & AVFMTCTX_UNSEEKABLE))
2298  return AVERROR(ENOSYS);
2299 
2300  first_timestamp = c->first_timestamp == AV_NOPTS_VALUE ?
2301  0 : c->first_timestamp;
2302 
2304  s->streams[stream_index]->time_base.den,
2307 
2308  duration = s->duration == AV_NOPTS_VALUE ?
2309  0 : s->duration;
2310 
2311  if (0 < duration && duration < seek_timestamp - first_timestamp)
2312  return AVERROR(EIO);
2313 
2314  /* find the playlist with the specified stream */
2315  for (i = 0; i < c->n_playlists; i++) {
2316  struct playlist *pls = c->playlists[i];
2317  for (j = 0; j < pls->n_main_streams; j++) {
2318  if (pls->main_streams[j] == s->streams[stream_index]) {
2319  seek_pls = pls;
2320  stream_subdemuxer_index = j;
2321  break;
2322  }
2323  }
2324  }
2325  /* check if the timestamp is valid for the playlist with the
2326  * specified stream index */
2327  if (!seek_pls || !find_timestamp_in_playlist(c, seek_pls, seek_timestamp, &seq_no))
2328  return AVERROR(EIO);
2329 
2330  /* set segment now so we do not need to search again below */
2331  seek_pls->cur_seq_no = seq_no;
2332  seek_pls->seek_stream_index = stream_subdemuxer_index;
2333 
2334  for (i = 0; i < c->n_playlists; i++) {
2335  /* Reset reading */
2336  struct playlist *pls = c->playlists[i];
2337  ff_format_io_close(pls->parent, &pls->input);
2338  pls->input_read_done = 0;
2339  ff_format_io_close(pls->parent, &pls->input_next);
2340  pls->input_next_requested = 0;
2341  av_packet_unref(pls->pkt);
2342  pls->pb.eof_reached = 0;
2343  /* Clear any buffered data */
2344  pls->pb.buf_end = pls->pb.buf_ptr = pls->pb.buffer;
2345  /* Reset the pos, to let the mpegts demuxer know we've seeked. */
2346  pls->pb.pos = 0;
2347  /* Flush the packet queue of the subdemuxer. */
2348  ff_read_frame_flush(pls->ctx);
2349 
2351  pls->seek_flags = flags;
2352 
2353  if (pls != seek_pls) {
2354  /* set closest segment seq_no for playlists not handled above */
2356  /* seek the playlist to the given position without taking
2357  * keyframes into account since this playlist does not have the
2358  * specified stream where we should look for the keyframes */
2359  pls->seek_stream_index = -1;
2360  pls->seek_flags |= AVSEEK_FLAG_ANY;
2361  }
2362  }
2363 
2364  c->cur_timestamp = seek_timestamp;
2365 
2366  return 0;
2367 }
2368 
2369 static int hls_probe(const AVProbeData *p)
2370 {
2371  /* Require #EXTM3U at the start, and either one of the ones below
2372  * somewhere for a proper match. */
2373  if (strncmp(p->buf, "#EXTM3U", 7))
2374  return 0;
2375 
2376  if (strstr(p->buf, "#EXT-X-STREAM-INF:") ||
2377  strstr(p->buf, "#EXT-X-TARGETDURATION:") ||
2378  strstr(p->buf, "#EXT-X-MEDIA-SEQUENCE:"))
2379  return AVPROBE_SCORE_MAX;
2380  return 0;
2381 }
2382 
2383 #define OFFSET(x) offsetof(HLSContext, x)
2384 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2385 static const AVOption hls_options[] = {
2386  {"live_start_index", "segment index to start live streams at (negative values are from the end)",
2387  OFFSET(live_start_index), AV_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS},
2388  {"allowed_extensions", "List of file extensions that hls is allowed to access",
2389  OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
2390  {.str = "3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,wav"},
2391  INT_MIN, INT_MAX, FLAGS},
2392  {"max_reload", "Maximum number of times a insufficient list is attempted to be reloaded",
2393  OFFSET(max_reload), AV_OPT_TYPE_INT, {.i64 = 1000}, 0, INT_MAX, FLAGS},
2394  {"m3u8_hold_counters", "The maximum number of times to load m3u8 when it refreshes without new segments",
2395  OFFSET(m3u8_hold_counters), AV_OPT_TYPE_INT, {.i64 = 1000}, 0, INT_MAX, FLAGS},
2396  {"http_persistent", "Use persistent HTTP connections",
2397  OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
2398  {"http_multiple", "Use multiple HTTP connections for fetching segments",
2399  OFFSET(http_multiple), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, FLAGS},
2400  {"http_seekable", "Use HTTP partial requests, 0 = disable, 1 = enable, -1 = auto",
2401  OFFSET(http_seekable), AV_OPT_TYPE_BOOL, { .i64 = -1}, -1, 1, FLAGS},
2402  {NULL}
2403 };
2404 
2405 static const AVClass hls_class = {
2406  .class_name = "hls demuxer",
2407  .item_name = av_default_item_name,
2408  .option = hls_options,
2409  .version = LIBAVUTIL_VERSION_INT,
2410 };
2411 
2413  .name = "hls",
2414  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2415  .priv_class = &hls_class,
2416  .priv_data_size = sizeof(HLSContext),
2418  .read_probe = hls_probe,
2421  .read_close = hls_close,
2423 };
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1606
Main libavformat public API header.
#define AVFMT_EVENT_FLAG_METADATA_UPDATED
Definition: avformat.h:1562
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
#define AV_DISPOSITION_HEARING_IMPAIRED
stream for hearing impaired audiences
Definition: avformat.h:831
#define AVFMTCTX_NOHEADER
signal that no header is present (streams are added dynamically)
Definition: avformat.h:1177
#define AVFMT_TS_DISCONT
Format allows timestamp discontinuities.
Definition: avformat.h:464
#define AVSEEK_FLAG_BYTE
seeking based on position in bytes
Definition: avformat.h:2416
#define AVFMT_NOGENSEARCH
Format does not allow to fall back on generic search.
Definition: avformat.h:469
#define AVSEEK_FLAG_ANY
seek to any frame, even non-keyframes
Definition: avformat.h:2417
#define ff_const59
The ff_const59 define is not part of the public API and will be removed without further warning.
Definition: avformat.h:533
#define AVFMTCTX_UNSEEKABLE
signal that the stream is definitely not seekable, and attempts to call the seek function will fail.
Definition: avformat.h:1179
#define AV_DISPOSITION_FORCED
Track should be used during playback by default.
Definition: avformat.h:830
#define AV_DISPOSITION_VISUAL_IMPAIRED
stream for visual impaired audiences
Definition: avformat.h:832
#define AVSTREAM_EVENT_FLAG_METADATA_UPDATED
Definition: avformat.h:999
#define AVFMT_FLAG_CUSTOM_IO
The caller has supplied a custom AVIOContext, don't avio_close() it.
Definition: avformat.h:1371
#define AVSEEK_FLAG_BACKWARD
Definition: avformat.h:2415
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:818
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrupt a blocking function associated with cb.
Definition: avio.c:658
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:467
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
#define AVIO_FLAG_READ
read-only
Definition: avio.h:674
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:342
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:364
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:633
URLContext * ffio_geturlcontext(AVIOContext *s)
Return the URLContext associated with the AVIOContext.
Definition: aviobuf.c:979
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:88
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
int ff_get_chomp_line(AVIOContext *s, char *buf, int maxlen)
Same as ff_get_line but strip the white-space characters in the text tail.
Definition: aviobuf.c:806
#define AV_RB64
Definition: intreadwrite.h:164
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: codec_par.c:72
#define FFSWAP(type, a, b)
Definition: common.h:108
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
Public dictionary API.
const OptionDef options[]
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:527
static av_cold void cleanup(FlashSV2Context *s)
Definition: flashsv2enc.c:127
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:560
#define AV_OPT_ALLOW_NULL
In av_opt_get, return NULL if the option has a pointer type and is set to NULL, rather than returning...
Definition: opt.h:574
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
Definition: avcodec.h:215
@ AVDISCARD_ALL
discard all
Definition: avcodec.h:236
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:75
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:690
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:64
uint8_t * av_stream_new_side_data(AVStream *stream, enum AVPacketSideDataType type, size_t size)
Allocate new information from stream.
AVProgram * av_new_program(AVFormatContext *s, int id)
Definition: utils.c:4603
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4432
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:211
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4505
int av_probe_input_buffer(AVIOContext *pb, ff_const59 AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size)
Like av_probe_input_buffer2() but returns 0 on success.
Definition: format.c:312
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
Definition: utils.c:1739
void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
Definition: utils.c:3600
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
Definition: utils.c:4477
int avformat_open_input(AVFormatContext **ps, const char *url, ff_const59 AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
Definition: utils.c:512
int avformat_queue_attached_pictures(AVFormatContext *s)
Definition: utils.c:454
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
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:70
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
#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:74
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
#define AV_DICT_MATCH_CASE
Only get an entry with exact-case key match.
Definition: dict.h:69
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
int 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
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
#define AVERROR_PROTOCOL_NOT_FOUND
Protocol not found.
Definition: error.h:63
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
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
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod)
Compare the remainders of two integer operands divided by a common divisor.
Definition: mathematics.c:160
@ AV_ROUND_DOWN
Round toward -infinity.
Definition: mathematics.h:82
@ AV_ROUND_UP
Round toward +infinity.
Definition: mathematics.h:83
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:502
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:478
AVMediaType
Definition: avutil.h:199
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok().
Definition: avstring.c:186
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
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
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:225
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
Definition: opt.c:779
static void update_noheader_flag(AVFormatContext *s)
Definition: hls.c:1823
#define MAX_CHARACTERISTICS_LEN
Definition: hls.c:45
static void handle_variant_args(struct variant_info *info, const char *key, int key_len, char **dest, int *dest_len)
Definition: hls.c:356
#define MAX_FIELD_LEN
Definition: hls.c:44
static int open_input(HLSContext *c, struct playlist *pls, struct segment *seg, AVIOContext **in)
Definition: hls.c:1229
static int update_init_section(struct playlist *pls, struct segment *seg)
Definition: hls.c:1316
static struct segment * next_segment(struct playlist *pls)
Definition: hls.c:1007
static struct rendition * new_rendition(HLSContext *c, struct rendition_info *info, const char *url_base)
Definition: hls.c:468
static int read_from_url(struct playlist *pls, struct segment *seg, uint8_t *buf, int buf_size)
Definition: hls.c:1015
#define INITIAL_BUFFER_SIZE
Definition: hls.c:42
static void handle_init_section_args(struct init_section_info *info, const char *key, int key_len, char **dest, int *dest_len)
Definition: hls.c:444
static int hls_read_header(AVFormatContext *s)
Definition: hls.c:1858
static struct segment * current_segment(struct playlist *pls)
Definition: hls.c:1002
static int read_data(void *opaque, uint8_t *buf, int buf_size)
Definition: hls.c:1426
static int set_stream_info_from_input_stream(AVStream *st, struct playlist *pls, AVStream *ist)
Definition: hls.c:1765
static void free_segment_list(struct playlist *pls)
Definition: hls.c:228
#define MPEG_TIME_BASE
Definition: hls.c:47
static void handle_rendition_args(struct rendition_info *info, const char *key, int key_len, char **dest, int *dest_len)
Definition: hls.c:552
static void free_init_section_list(struct playlist *pls)
Definition: hls.c:235
static void add_renditions_to_variant(HLSContext *c, struct variant *var, enum AVMediaType type, const char *group_id)
Definition: hls.c:1586
static int hls_probe(const AVProbeData *p)
Definition: hls.c:2369
static int ensure_playlist(HLSContext *c, struct playlist **pls, const char *url)
Definition: hls.c:596
PlaylistType
Definition: hls.c:82
@ PLS_TYPE_UNSPECIFIED
Definition: hls.c:83
@ PLS_TYPE_VOD
Definition: hls.c:85
@ PLS_TYPE_EVENT
Definition: hls.c:84
static int recheck_discard_flags(AVFormatContext *s, int first)
Definition: hls.c:2069
static AVRational get_timebase(struct playlist *pls)
Definition: hls.c:2134
static void fill_timing_for_id3_timestamped_stream(struct playlist *pls)
Definition: hls.c:2109
static void parse_id3(AVFormatContext *s, AVIOContext *pb, AVDictionary **metadata, int64_t *dts, ID3v2ExtraMetaAPIC **apic, ID3v2ExtraMeta **extra_meta)
Definition: hls.c:1032
static void handle_key_args(struct key_info *info, const char *key, int key_len, char **dest, int *dest_len)
Definition: hls.c:380
static int64_t default_reload_interval(struct playlist *pls)
Definition: hls.c:1373
static int find_timestamp_in_playlist(HLSContext *c, struct playlist *pls, int64_t timestamp, int64_t *seq_no)
Definition: hls.c:1642
static int open_url_keepalive(AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary **options)
Definition: hls.c:606
static void add_metadata_from_renditions(AVFormatContext *s, struct playlist *pls, enum AVMediaType type)
Definition: hls.c:1610
static int update_streams_from_subdemuxer(AVFormatContext *s, struct playlist *pls)
Definition: hls.c:1798
#define FLAGS
Definition: hls.c:2384
static void add_stream_to_programs(AVFormatContext *s, struct playlist *pls, AVStream *stream)
Definition: hls.c:1739
static int hls_close(AVFormatContext *s)
Definition: hls.c:1844
static struct playlist * new_playlist(HLSContext *c, const char *url, const char *base)
Definition: hls.c:296
static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **opts)
Definition: hls.c:1729
static void handle_id3(AVIOContext *pb, struct playlist *pls)
Definition: hls.c:1087
static void free_segment_dynarray(struct segment **segments, int n_segments)
Definition: hls.c:218
static int compare_ts_with_wrapdetect(int64_t ts_a, struct playlist *pls_a, int64_t ts_b, struct playlist *pls_b)
Definition: hls.c:2142
static struct segment * new_init_section(struct playlist *pls, struct init_section_info *info, const char *url_base)
Definition: hls.c:400
static int parse_playlist(HLSContext *c, const char *url, struct playlist *pls, AVIOContext *in)
Definition: hls.c:711
#define MPEG_TIME_BASE_Q
Definition: hls.c:48
KeyType
Definition: hls.c:62
@ KEY_SAMPLE_AES
Definition: hls.c:65
@ KEY_NONE
Definition: hls.c:63
@ KEY_AES_128
Definition: hls.c:64
static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hls.c:2151
static int save_avio_options(AVFormatContext *s)
Definition: hls.c:1707
static const AVOption hls_options[]
Definition: hls.c:2385
static void free_rendition_list(HLSContext *c)
Definition: hls.c:287
static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary **opts, AVDictionary *opts2, int *is_http_out)
Definition: hls.c:624
#define OFFSET(x)
Definition: hls.c:2383
static int id3_has_changed_values(struct playlist *pls, AVDictionary *metadata, ID3v2ExtraMetaAPIC *apic)
Definition: hls.c:1058
static void free_playlist_list(HLSContext *c)
Definition: hls.c:246
static const AVClass hls_class
Definition: hls.c:2405
static int64_t select_cur_seq_no(HLSContext *c, struct playlist *pls)
Definition: hls.c:1668
static struct variant * new_variant(HLSContext *c, struct variant_info *info, const char *url, const char *base)
Definition: hls.c:330
static void intercept_id3(struct playlist *pls, uint8_t *buf, int buf_size, int *len)
Definition: hls.c:1129
static int playlist_needed(struct playlist *pls)
Definition: hls.c:1380
static void free_variant_list(HLSContext *c)
Definition: hls.c:275
AVInputFormat ff_hls_demuxer
Definition: hls.c:2412
static int hls_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: hls.c:2287
int ff_http_do_new_request2(URLContext *h, const char *uri, AVDictionary **opts)
Send a new HTTP request, reusing the old connection.
Definition: http.c:396
cl_device_type type
const char * key
int ff_id3v2_tag_len(const uint8_t *buf)
Get the length of an ID3v2 tag.
Definition: id3v2.c:156
int ff_id3v2_match(const uint8_t *buf, const char *magic)
Detect ID3v2 Header.
Definition: id3v2.c:143
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
Definition: id3v2.c:1122
int ff_id3v2_parse_priv_dict(AVDictionary **metadata, ID3v2ExtraMeta *extra_meta)
Parse PRIV tags into a dictionary.
Definition: id3v2.c:1229
int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Create a stream for each APIC (attached picture) extracted from the ID3v2 header.
Definition: id3v2.c:1138
int ff_id3v2_parse_priv(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Add metadata for all PRIV tags in the ID3v2 header.
Definition: id3v2.c:1269
void ff_id3v2_read_dict(AVIOContext *pb, AVDictionary **metadata, const char *magic, ID3v2ExtraMeta **extra_meta)
Read an ID3v2 tag into specified dictionary and retrieve supported extra metadata.
Definition: id3v2.c:1110
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
#define ID3v2_HEADER_SIZE
Definition: id3v2.h:30
int i
Definition: input.c:407
#define AV_WB64(p, v)
Definition: intreadwrite.h:433
void(* ff_parse_key_val_cb)(void *context, const char *key, int key_len, char **dest, int *dest_len)
Callback function type for ff_parse_key_value.
Definition: internal.h:511
int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
Copies the whilelists from one context to the other.
Definition: utils.c:160
int ff_hex_to_data(uint8_t *data, const char *p)
Parse a string of hexadecimal strings.
Definition: utils.c:4913
#define dynarray_add(tab, nb_ptr, elem)
Definition: internal.h:355
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4892
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:4941
#define MAX_URL_SIZE
Definition: internal.h:30
void ff_read_frame_flush(AVFormatContext *s)
Flush the frame reader.
Definition: utils.c:1890
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5688
void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf, void *context)
Parse a string with comma-separated key=value pairs.
Definition: utils.c:4971
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
AVOptions.
#define tb
Definition: regdef.h:68
#define snprintf
Definition: snprintf.h:34
unsigned int pos
Definition: spdifenc.c:412
int size
Size of data in bytes.
Definition: buffer.h:97
uint8_t * data
The data buffer.
Definition: buffer.h:92
Describe the class of an AVClass context structure.
Definition: log.h:67
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
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
char * key
Definition: dict.h:82
char * value
Definition: dict.h:83
Format I/O context.
Definition: avformat.h:1232
int event_flags
Flags indicating events happening on the file, a combination of AVFMT_EVENT_FLAG_*.
Definition: avformat.h:1555
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1288
AVIOContext * pb
I/O context.
Definition: avformat.h:1274
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1474
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1363
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:1408
int ctx_flags
Flags signalling stream properties.
Definition: avformat.h:1281
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1512
void * priv_data
Format private data.
Definition: avformat.h:1260
int64_t probesize
Maximum size of the data read from input for determining the input container format.
Definition: avformat.h:1400
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
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:1828
Bytestream IO Context.
Definition: avio.h:161
unsigned char * buf_end
End of the data, may be less than buffer+buffer_size if the read function returned less data than req...
Definition: avio.h:229
unsigned char * buf_ptr
Current position in the buffer.
Definition: avio.h:228
int64_t pos
position in the file of the current buffer
Definition: avio.h:238
unsigned char * buffer
Start of the buffer.
Definition: avio.h:226
int eof_reached
true if was unable to read due to error or eof
Definition: avio.h:239
Callback for checking whether to abort blocking functions.
Definition: avio.h:58
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:645
AVOption.
Definition: opt.h:248
uint8_t * data
Definition: packet.h:307
enum AVPacketSideDataType type
Definition: packet.h:313
size_t size
Definition: packet.h:311
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
New fields can be added to the end with minor version bumps.
Definition: avformat.h:1150
unsigned int nb_stream_indexes
Definition: avformat.h:1155
unsigned int * stream_index
Definition: avformat.h:1154
enum AVDiscard discard
selects which program to discard and which to feed to the caller
Definition: avformat.h:1153
AVDictionary * metadata
Definition: avformat.h:1156
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
int need_context_update
Whether the internal avctx needs to be updated from codecpar (after a late change to codecpar)
Definition: internal.h:200
Stream structure.
Definition: avformat.h:873
AVPacketSideData * side_data
An array of side data that applies to the whole stream (i.e.
Definition: avformat.h:975
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:928
AVDictionary * metadata
Definition: avformat.h:937
int id
Format-specific stream ID.
Definition: avformat.h:880
int index
stream index in AVFormatContext
Definition: avformat.h:874
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1055
AVPacket attached_pic
For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet will contain the attached pictu...
Definition: avformat.h:955
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
int event_flags
Flags indicating events happening on the stream, a combination of AVSTREAM_EVENT_FLAG_*.
Definition: avformat.h:992
int nb_side_data
The number of elements in the AVStream.side_data array.
Definition: avformat.h:979
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1113
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:926
int n_renditions
Definition: hls.c:199
int http_multiple
Definition: hls.c:213
struct rendition ** renditions
Definition: hls.c:200
int m3u8_hold_counters
Definition: hls.c:203
AVIOInterruptCB * interrupt_callback
Definition: hls.c:208
AVDictionary * avio_opts
Definition: hls.c:209
int n_variants
Definition: hls.c:195
int http_persistent
Definition: hls.c:212
AVFormatContext * ctx
Definition: hls.c:194
int64_t cur_seq_no
Definition: hls.c:202
int live_start_index
Definition: hls.c:204
AVIOContext * playlist_pb
Definition: hls.c:215
int first_packet
Definition: hls.c:205
int max_reload
Definition: hls.c:211
int n_playlists
Definition: hls.c:197
int64_t cur_timestamp
Definition: hls.c:207
struct variant ** variants
Definition: hls.c:196
int64_t first_timestamp
Definition: hls.c:206
struct playlist ** playlists
Definition: hls.c:198
char * allowed_extensions
Definition: hls.c:210
int http_seekable
Definition: hls.c:214
AVBufferRef * buf
Definition: id3v2.h:66
uint8_t * data
Definition: id3v2.h:74
uint32_t datasize
Definition: id3v2.h:75
uint8_t * owner
Definition: id3v2.h:73
ID3v2ExtraMetaPRIV priv
Definition: id3v2.h:91
ID3v2ExtraMetaAPIC apic
Definition: id3v2.h:88
union ID3v2ExtraMeta::@258 data
const char * tag
Definition: id3v2.h:85
struct ID3v2ExtraMeta * next
Definition: id3v2.h:86
Definition: url.h:38
char uri[MAX_URL_SIZE]
Definition: hls.c:396
char byterange[32]
Definition: hls.c:397
Definition: hls.c:374
char iv[35]
Definition: hls.c:377
char uri[MAX_URL_SIZE]
Definition: hls.c:375
char method[11]
Definition: hls.c:376
Definition: graph2dot.c:48
Definition: hls.c:93
int finished
Definition: hls.c:112
int id3_changed
Definition: hls.c:145
int broken
Definition: hls.c:119
int64_t cur_seg_offset
Definition: hls.c:123
AVIOContext * input
Definition: hls.c:97
uint8_t * read_buffer
Definition: hls.c:96
int64_t cur_seq_no
Definition: hls.c:120
int n_renditions
Definition: hls.c:156
int64_t id3_mpegts_timestamp
Definition: hls.c:139
struct rendition ** renditions
Definition: hls.c:157
unsigned int init_sec_data_len
Definition: hls.c:130
int64_t id3_offset
Definition: hls.c:140
int64_t target_duration
Definition: hls.c:114
int64_t last_load_time
Definition: hls.c:124
int64_t last_seq_no
Definition: hls.c:121
int seek_stream_index
Definition: hls.c:150
int64_t start_seq_no
Definition: hls.c:115
unsigned int id3_buf_size
Definition: hls.c:142
AVStream ** main_streams
Definition: hls.c:109
AVIOContext * input_next
Definition: hls.c:99
unsigned int init_sec_buf_read_offset
Definition: hls.c:131
AVIOContext pb
Definition: hls.c:95
int64_t seek_timestamp
Definition: hls.c:148
AVPacket * pkt
Definition: hls.c:104
int input_read_done
Definition: hls.c:98
AVFormatContext * ctx
Definition: hls.c:103
uint8_t * init_sec_buf
Definition: hls.c:128
struct segment * cur_init_section
Definition: hls.c:127
uint8_t * id3_buf
Definition: hls.c:141
uint8_t key[16]
Definition: hls.c:134
int id3_found
Definition: hls.c:144
int index
Definition: hls.c:102
int m3u8_hold_counters
Definition: hls.c:122
int needed
Definition: hls.c:118
int has_noheader_flag
Definition: hls.c:105
char key_url[MAX_URL_SIZE]
Definition: hls.c:133
int n_init_sections
Definition: hls.c:161
struct segment ** segments
Definition: hls.c:117
int n_segments
Definition: hls.c:116
struct segment ** init_sections
Definition: hls.c:162
char url[MAX_URL_SIZE]
Definition: hls.c:94
AVFormatContext * parent
Definition: hls.c:101
int seek_flags
Definition: hls.c:149
int is_id3_timestamped
Definition: hls.c:138
unsigned int init_sec_buf_size
Definition: hls.c:129
int n_main_streams
Definition: hls.c:110
int input_next_requested
Definition: hls.c:100
ID3v2ExtraMeta * id3_deferred_extra
Definition: hls.c:146
AVDictionary * id3_initial
Definition: hls.c:143
enum PlaylistType type
Definition: hls.c:113
char type[16]
Definition: hls.c:457
char defaultr[4]
Definition: hls.c:463
char name[MAX_FIELD_LEN]
Definition: hls.c:462
char language[MAX_FIELD_LEN]
Definition: hls.c:460
char forced[4]
Definition: hls.c:464
char uri[MAX_URL_SIZE]
Definition: hls.c:458
char group_id[MAX_FIELD_LEN]
Definition: hls.c:459
char characteristics[MAX_CHARACTERISTICS_LEN]
Definition: hls.c:465
char assoc_language[MAX_FIELD_LEN]
Definition: hls.c:461
Definition: hls.c:171
char name[MAX_FIELD_LEN]
Definition: hls.c:176
enum AVMediaType type
Definition: hls.c:172
char group_id[MAX_FIELD_LEN]
Definition: hls.c:174
char language[MAX_FIELD_LEN]
Definition: hls.c:175
int disposition
Definition: hls.c:177
struct playlist * playlist
Definition: hls.c:173
Definition: hls.c:68
struct segment * init_section
Definition: hls.c:77
int64_t size
Definition: hls.c:71
uint8_t iv[16]
Definition: hls.c:75
char * url
Definition: hls.c:72
int64_t duration
Definition: hls.c:69
int64_t url_offset
Definition: hls.c:70
char * key
Definition: hls.c:73
enum KeyType key_type
Definition: hls.c:74
char bandwidth[20]
Definition: hls.c:323
char video[MAX_FIELD_LEN]
Definition: hls.c:326
char subtitles[MAX_FIELD_LEN]
Definition: hls.c:327
char audio[MAX_FIELD_LEN]
Definition: hls.c:325
Definition: hls.c:180
int bandwidth
Definition: hls.c:181
char audio_group[MAX_FIELD_LEN]
Definition: hls.c:187
int n_playlists
Definition: hls.c:184
char url[MAX_URL_SIZE]
Definition: hlsproto.c:55
struct playlist ** playlists
Definition: hls.c:185
char video_group[MAX_FIELD_LEN]
Definition: hls.c:188
char subtitles_group[MAX_FIELD_LEN]
Definition: hls.c:189
#define av_free(p)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
int64_t duration
Definition: movenc.c:64
AVPacket * pkt
Definition: movenc.c:59
AVDictionary * opts
Definition: movenc.c:50
int av_usleep(unsigned usec)
Sleep for a period of time.
Definition: time.c:84
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
Definition: time.c:56
int size
int 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:319
const char * r
Definition: vf_curves.c:116
static void fill_buf(uint8_t *data, int w, int h, int linesize, uint8_t v)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
int len
uint8_t base
Definition: vp3data.h:141
static double c[64]