FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/hls.c
Date: 2026-04-22 18:56:46
Exec Total Coverage
Lines: 766 1534 49.9%
Functions: 38 54 70.4%
Branches: 412 1108 37.2%
Line Branch Exec Source
1 /*
2 * Apple HTTP Live Streaming demuxer
3 * Copyright (c) 2010 Martin Storsjo
4 * Copyright (c) 2013 Anssi Hannula
5 * Copyright (c) 2021 Nachiket Tarate
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 /**
25 * @file
26 * Apple HTTP Live Streaming demuxer
27 * https://www.rfc-editor.org/rfc/rfc8216.txt
28 */
29
30 #include "config_components.h"
31
32 #include "libavformat/http.h"
33 #include "libavutil/aes.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/avassert.h"
36 #include "libavutil/intreadwrite.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/mem.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/time.h"
42 #include "avformat.h"
43 #include "demux.h"
44 #include "internal.h"
45 #include "avio_internal.h"
46 #include "id3v2.h"
47 #include "url.h"
48
49 #include "hls_sample_encryption.h"
50
51 #define INITIAL_BUFFER_SIZE 32768
52
53 #define MAX_FIELD_LEN 64
54 #define MAX_CHARACTERISTICS_LEN 512
55
56 #define MPEG_TIME_BASE 90000
57 #define MPEG_TIME_BASE_Q (AVRational){1, MPEG_TIME_BASE}
58
59 /*
60 * An apple http stream consists of a playlist with media segment files,
61 * played sequentially. There may be several playlists with the same
62 * video content, in different bandwidth variants, that are played in
63 * parallel (preferably only one bandwidth variant at a time). In this case,
64 * the user supplied the url to a main playlist that only lists the variant
65 * playlists.
66 *
67 * If the main playlist doesn't point at any variants, we still create
68 * one anonymous toplevel variant for this, to maintain the structure.
69 */
70
71 enum KeyType {
72 KEY_NONE,
73 KEY_AES_128,
74 KEY_SAMPLE_AES
75 };
76
77 struct segment {
78 int64_t duration;
79 int64_t url_offset;
80 int64_t size;
81 char *url;
82 char *key;
83 enum KeyType key_type;
84 uint8_t iv[16];
85 /* associated Media Initialization Section, treated as a segment */
86 struct segment *init_section;
87 };
88
89 struct rendition;
90
91 enum PlaylistType {
92 PLS_TYPE_UNSPECIFIED,
93 PLS_TYPE_EVENT,
94 PLS_TYPE_VOD
95 };
96
97 /*
98 * Each playlist has its own demuxer. If it currently is active,
99 * it has an open AVIOContext too, and potentially an AVPacket
100 * containing the next packet from this stream.
101 */
102 struct playlist {
103 char url[MAX_URL_SIZE];
104 FFIOContext pb;
105 uint8_t* read_buffer;
106 AVIOContext *input;
107 int input_read_done;
108 AVIOContext *input_next;
109 int input_next_requested;
110 AVFormatContext *parent;
111 int index;
112 AVFormatContext *ctx;
113 AVPacket *pkt;
114 int has_noheader_flag;
115
116 /* main demuxer streams associated with this playlist
117 * indexed by the subdemuxer stream indexes */
118 AVStream **main_streams;
119 int n_main_streams;
120
121 int finished;
122 enum PlaylistType type;
123 int64_t target_duration;
124 int64_t start_seq_no;
125 int time_offset_flag;
126 int64_t start_time_offset;
127 int n_segments;
128 struct segment **segments;
129 int needed;
130 int broken;
131 int64_t cur_seq_no;
132 int64_t last_seq_no;
133 int m3u8_hold_counters;
134 int64_t cur_seg_offset;
135 int64_t last_load_time;
136
137 /* Currently active Media Initialization Section */
138 struct segment *cur_init_section;
139 uint8_t *init_sec_buf;
140 unsigned int init_sec_buf_size;
141 unsigned int init_sec_data_len;
142 unsigned int init_sec_buf_read_offset;
143
144 char key_url[MAX_URL_SIZE];
145 uint8_t key[16];
146
147 /* ID3 timestamp handling (elementary audio streams have ID3 timestamps
148 * (and possibly other ID3 tags) in the beginning of each segment) */
149 int is_id3_timestamped; /* -1: not yet known */
150 int64_t id3_mpegts_timestamp; /* in mpegts tb */
151 int64_t id3_offset; /* in stream original tb */
152 uint8_t* id3_buf; /* temp buffer for id3 parsing */
153 unsigned int id3_buf_size;
154 AVDictionary *id3_initial; /* data from first id3 tag */
155 int id3_found; /* ID3 tag found at some point */
156 int id3_changed; /* ID3 tag data has changed at some point */
157 ID3v2ExtraMeta *id3_deferred_extra; /* stored here until subdemuxer is opened */
158
159 HLSAudioSetupInfo audio_setup_info;
160
161 int64_t seek_timestamp;
162 int seek_flags;
163 int seek_stream_index; /* into subdemuxer stream array */
164
165 /* Renditions associated with this playlist, if any.
166 * Alternative rendition playlists have a single rendition associated
167 * with them, and variant main Media Playlists may have
168 * multiple (playlist-less) renditions associated with them. */
169 int n_renditions;
170 struct rendition **renditions;
171
172 /* Media Initialization Sections (EXT-X-MAP) associated with this
173 * playlist, if any. */
174 int n_init_sections;
175 struct segment **init_sections;
176 int is_subtitle; /* Indicates if it's a subtitle playlist */
177 };
178
179 /*
180 * Renditions are e.g. alternative subtitle or audio streams.
181 * The rendition may either be an external playlist or it may be
182 * contained in the main Media Playlist of the variant (in which case
183 * playlist is NULL).
184 */
185 struct rendition {
186 enum AVMediaType type;
187 struct playlist *playlist;
188 char group_id[MAX_FIELD_LEN];
189 char language[MAX_FIELD_LEN];
190 char name[MAX_FIELD_LEN];
191 int disposition;
192 };
193
194 struct variant {
195 int bandwidth;
196
197 /* every variant contains at least the main Media Playlist in index 0 */
198 int n_playlists;
199 struct playlist **playlists;
200
201 char audio_group[MAX_FIELD_LEN];
202 char video_group[MAX_FIELD_LEN];
203 char subtitles_group[MAX_FIELD_LEN];
204 };
205
206 typedef struct HLSContext {
207 AVClass *class;
208 AVFormatContext *ctx;
209 int n_variants;
210 struct variant **variants;
211 int n_playlists;
212 struct playlist **playlists;
213 int n_renditions;
214 struct rendition **renditions;
215
216 int64_t cur_seq_no;
217 int m3u8_hold_counters;
218 int live_start_index;
219 int prefer_x_start;
220 int first_packet;
221 int64_t first_timestamp;
222 int64_t cur_timestamp;
223 AVIOInterruptCB *interrupt_callback;
224 AVDictionary *avio_opts;
225 AVDictionary *seg_format_opts;
226 char *allowed_extensions;
227 char *allowed_segment_extensions;
228 int extension_picky;
229 int max_reload;
230 int http_persistent;
231 int http_multiple;
232 int http_seekable;
233 int seg_max_retry;
234 AVIOContext *playlist_pb;
235 HLSCryptoContext crypto_ctx;
236 } HLSContext;
237
238 14 static void free_segment_dynarray(struct segment **segments, int n_segments)
239 {
240 int i;
241
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 87 for (i = 0; i < n_segments; i++) {
242 73 av_freep(&segments[i]->key);
243 73 av_freep(&segments[i]->url);
244 73 av_freep(&segments[i]);
245 }
246 14 }
247
248 14 static void free_segment_list(struct playlist *pls)
249 {
250 14 free_segment_dynarray(pls->segments, pls->n_segments);
251 14 av_freep(&pls->segments);
252 14 pls->n_segments = 0;
253 14 }
254
255 14 static void free_init_section_list(struct playlist *pls)
256 {
257 int i;
258
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 15 for (i = 0; i < pls->n_init_sections; i++) {
259 1 av_freep(&pls->init_sections[i]->key);
260 1 av_freep(&pls->init_sections[i]->url);
261 1 av_freep(&pls->init_sections[i]);
262 }
263 14 av_freep(&pls->init_sections);
264 14 pls->n_init_sections = 0;
265 14 }
266
267 14 static void free_playlist_list(HLSContext *c)
268 {
269 int i;
270
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 28 for (i = 0; i < c->n_playlists; i++) {
271 14 struct playlist *pls = c->playlists[i];
272 14 free_segment_list(pls);
273 14 free_init_section_list(pls);
274 14 av_freep(&pls->main_streams);
275 14 av_freep(&pls->renditions);
276 14 av_freep(&pls->id3_buf);
277 14 av_dict_free(&pls->id3_initial);
278 14 ff_id3v2_free_extra_meta(&pls->id3_deferred_extra);
279 14 av_freep(&pls->init_sec_buf);
280 14 av_packet_free(&pls->pkt);
281 14 av_freep(&pls->pb.pub.buffer);
282 14 ff_format_io_close(c->ctx, &pls->input);
283 14 pls->input_read_done = 0;
284 14 ff_format_io_close(c->ctx, &pls->input_next);
285 14 pls->input_next_requested = 0;
286
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 14 if (pls->ctx) {
287 14 pls->ctx->pb = NULL;
288 14 avformat_close_input(&pls->ctx);
289 }
290 14 av_free(pls);
291 }
292 14 av_freep(&c->playlists);
293 14 c->n_playlists = 0;
294 14 }
295
296 14 static void free_variant_list(HLSContext *c)
297 {
298 int i;
299
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 28 for (i = 0; i < c->n_variants; i++) {
300 14 struct variant *var = c->variants[i];
301 14 av_freep(&var->playlists);
302 14 av_free(var);
303 }
304 14 av_freep(&c->variants);
305 14 c->n_variants = 0;
306 14 }
307
308 14 static void free_rendition_list(HLSContext *c)
309 {
310 int i;
311
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 14 for (i = 0; i < c->n_renditions; i++)
312 ✗ av_freep(&c->renditions[i]);
313 14 av_freep(&c->renditions);
314 14 c->n_renditions = 0;
315 14 }
316
317 14 static struct playlist *new_playlist(HLSContext *c, const char *url,
318 const char *base)
319 {
320 14 struct playlist *pls = av_mallocz(sizeof(struct playlist));
321
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 14 if (!pls)
322 ✗ return NULL;
323 14 pls->pkt = av_packet_alloc();
324
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 14 if (!pls->pkt) {
325 ✗ av_free(pls);
326 ✗ return NULL;
327 }
328 14 ff_make_absolute_url(pls->url, sizeof(pls->url), base, url);
329
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 14 if (!pls->url[0]) {
330 ✗ av_packet_free(&pls->pkt);
331 ✗ av_free(pls);
332 ✗ return NULL;
333 }
334 14 pls->seek_timestamp = AV_NOPTS_VALUE;
335
336 14 pls->is_id3_timestamped = -1;
337 14 pls->id3_mpegts_timestamp = AV_NOPTS_VALUE;
338
339 14 dynarray_add(&c->playlists, &c->n_playlists, pls);
340 14 return pls;
341 }
342
343 struct variant_info {
344 char bandwidth[20];
345 /* variant group ids: */
346 char audio[MAX_FIELD_LEN];
347 char video[MAX_FIELD_LEN];
348 char subtitles[MAX_FIELD_LEN];
349 };
350
351 14 static struct variant *new_variant(HLSContext *c, struct variant_info *info,
352 const char *url, const char *base)
353 {
354 struct variant *var;
355 struct playlist *pls;
356
357 14 pls = new_playlist(c, url, base);
358
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 14 if (!pls)
359 ✗ return NULL;
360
361 14 var = av_mallocz(sizeof(struct variant));
362
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 14 if (!var)
363 ✗ return NULL;
364
365
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 14 if (info) {
366 ✗ var->bandwidth = atoi(info->bandwidth);
367 ✗ strcpy(var->audio_group, info->audio);
368 ✗ strcpy(var->video_group, info->video);
369 ✗ strcpy(var->subtitles_group, info->subtitles);
370 }
371
372 14 dynarray_add(&c->variants, &c->n_variants, var);
373 14 dynarray_add(&var->playlists, &var->n_playlists, pls);
374 14 return var;
375 }
376
377 ✗ static void handle_variant_args(struct variant_info *info, const char *key,
378 int key_len, char **dest, int *dest_len)
379 {
380 ✗ if (!strncmp(key, "BANDWIDTH=", key_len)) {
381 ✗ *dest = info->bandwidth;
382 ✗ *dest_len = sizeof(info->bandwidth);
383 ✗ } else if (!strncmp(key, "AUDIO=", key_len)) {
384 ✗ *dest = info->audio;
385 ✗ *dest_len = sizeof(info->audio);
386 ✗ } else if (!strncmp(key, "VIDEO=", key_len)) {
387 ✗ *dest = info->video;
388 ✗ *dest_len = sizeof(info->video);
389 ✗ } else if (!strncmp(key, "SUBTITLES=", key_len)) {
390 ✗ *dest = info->subtitles;
391 ✗ *dest_len = sizeof(info->subtitles);
392 }
393 ✗ }
394
395 struct key_info {
396 char uri[MAX_URL_SIZE];
397 char method[11];
398 char iv[35];
399 };
400
401 ✗ static void handle_key_args(struct key_info *info, const char *key,
402 int key_len, char **dest, int *dest_len)
403 {
404 ✗ if (!strncmp(key, "METHOD=", key_len)) {
405 ✗ *dest = info->method;
406 ✗ *dest_len = sizeof(info->method);
407 ✗ } else if (!strncmp(key, "URI=", key_len)) {
408 ✗ *dest = info->uri;
409 ✗ *dest_len = sizeof(info->uri);
410 ✗ } else if (!strncmp(key, "IV=", key_len)) {
411 ✗ *dest = info->iv;
412 ✗ *dest_len = sizeof(info->iv);
413 }
414 ✗ }
415
416 struct init_section_info {
417 char uri[MAX_URL_SIZE];
418 char byterange[32];
419 };
420
421 1 static struct segment *new_init_section(struct playlist *pls,
422 struct init_section_info *info,
423 const char *url_base)
424 {
425 struct segment *sec;
426 1 char tmp_str[MAX_URL_SIZE], *ptr = tmp_str;
427
428
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 1 if (!info->uri[0])
429 ✗ return NULL;
430
431 1 sec = av_mallocz(sizeof(*sec));
432
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 1 if (!sec)
433 ✗ return NULL;
434
435
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 1 if (!av_strncasecmp(info->uri, "data:", 5)) {
436 ✗ ptr = info->uri;
437 } else {
438 1 ff_make_absolute_url(tmp_str, sizeof(tmp_str), url_base, info->uri);
439
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 1 if (!tmp_str[0]) {
440 ✗ av_free(sec);
441 ✗ return NULL;
442 }
443 }
444 1 sec->url = av_strdup(ptr);
445
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 1 if (!sec->url) {
446 ✗ av_free(sec);
447 ✗ return NULL;
448 }
449
450
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 1 if (info->byterange[0]) {
451 ✗ sec->size = strtoll(info->byterange, NULL, 10);
452 ✗ ptr = strchr(info->byterange, '@');
453 ✗ if (ptr)
454 ✗ sec->url_offset = strtoll(ptr+1, NULL, 10);
455 } else {
456 /* the entire file is the init section */
457 1 sec->size = -1;
458 }
459
460 1 dynarray_add(&pls->init_sections, &pls->n_init_sections, sec);
461
462 1 return sec;
463 }
464
465 1 static void handle_init_section_args(void *context, const char *key,
466 int key_len, char **dest, int *dest_len)
467 {
468 1 struct init_section_info *info = context;
469
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 1 if (!strncmp(key, "URI=", key_len)) {
470 1 *dest = info->uri;
471 1 *dest_len = sizeof(info->uri);
472 ✗ } else if (!strncmp(key, "BYTERANGE=", key_len)) {
473 ✗ *dest = info->byterange;
474 ✗ *dest_len = sizeof(info->byterange);
475 }
476 1 }
477
478 struct rendition_info {
479 char type[16];
480 char uri[MAX_URL_SIZE];
481 char group_id[MAX_FIELD_LEN];
482 char language[MAX_FIELD_LEN];
483 char assoc_language[MAX_FIELD_LEN];
484 char name[MAX_FIELD_LEN];
485 char defaultr[4];
486 char forced[4];
487 char characteristics[MAX_CHARACTERISTICS_LEN];
488 };
489
490 ✗ static struct rendition *new_rendition(HLSContext *c, struct rendition_info *info,
491 const char *url_base)
492 {
493 struct rendition *rend;
494 ✗ enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
495 char *characteristic;
496 char *chr_ptr;
497 char *saveptr;
498
499 ✗ if (!strcmp(info->type, "AUDIO"))
500 ✗ type = AVMEDIA_TYPE_AUDIO;
501 ✗ else if (!strcmp(info->type, "VIDEO"))
502 ✗ type = AVMEDIA_TYPE_VIDEO;
503 ✗ else if (!strcmp(info->type, "SUBTITLES"))
504 ✗ type = AVMEDIA_TYPE_SUBTITLE;
505 ✗ else if (!strcmp(info->type, "CLOSED-CAPTIONS"))
506 /* CLOSED-CAPTIONS is ignored since we do not support CEA-608 CC in
507 * AVC SEI RBSP anyway */
508 ✗ return NULL;
509
510 ✗ if (type == AVMEDIA_TYPE_UNKNOWN) {
511 ✗ av_log(c->ctx, AV_LOG_WARNING, "Can't support the type: %s\n", info->type);
512 ✗ return NULL;
513 }
514
515 /* URI is mandatory for subtitles as per spec */
516 ✗ if (type == AVMEDIA_TYPE_SUBTITLE && !info->uri[0]) {
517 ✗ av_log(c->ctx, AV_LOG_ERROR, "The URI tag is REQUIRED for subtitle.\n");
518 ✗ return NULL;
519 }
520
521 ✗ rend = av_mallocz(sizeof(struct rendition));
522 ✗ if (!rend)
523 ✗ return NULL;
524
525 ✗ dynarray_add(&c->renditions, &c->n_renditions, rend);
526
527 ✗ rend->type = type;
528 ✗ strcpy(rend->group_id, info->group_id);
529 ✗ strcpy(rend->language, info->language);
530 ✗ strcpy(rend->name, info->name);
531
532 /* add the playlist if this is an external rendition */
533 ✗ if (info->uri[0]) {
534 ✗ rend->playlist = new_playlist(c, info->uri, url_base);
535 ✗ if (rend->playlist) {
536 ✗ if (type == AVMEDIA_TYPE_SUBTITLE) {
537 ✗ rend->playlist->is_subtitle = 1;
538 ✗ rend->playlist->is_id3_timestamped = 0;
539 }
540 ✗ dynarray_add(&rend->playlist->renditions,
541 &rend->playlist->n_renditions, rend);
542 }
543 }
544
545 ✗ if (info->assoc_language[0]) {
546 ✗ size_t langlen = strlen(rend->language);
547 ✗ if (langlen < sizeof(rend->language) - 3) {
548 size_t assoc_len;
549 ✗ rend->language[langlen] = ',';
550 ✗ assoc_len = av_strlcpy(rend->language + langlen + 1,
551 ✗ info->assoc_language,
552 sizeof(rend->language) - langlen - 1);
553 ✗ if (langlen + assoc_len + 2 > sizeof(rend->language)) // truncation occurred
554 ✗ av_log(c->ctx, AV_LOG_WARNING, "Truncated rendition language: %s\n",
555 ✗ info->assoc_language);
556 }
557 }
558
559 ✗ if (!strcmp(info->defaultr, "YES"))
560 ✗ rend->disposition |= AV_DISPOSITION_DEFAULT;
561 ✗ if (!strcmp(info->forced, "YES"))
562 ✗ rend->disposition |= AV_DISPOSITION_FORCED;
563
564 ✗ chr_ptr = info->characteristics;
565 ✗ while ((characteristic = av_strtok(chr_ptr, ",", &saveptr))) {
566 ✗ if (!strcmp(characteristic, "public.accessibility.describes-music-and-sound"))
567 ✗ rend->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
568 ✗ else if (!strcmp(characteristic, "public.accessibility.describes-video"))
569 ✗ rend->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
570
571 ✗ chr_ptr = NULL;
572 }
573
574 ✗ return rend;
575 }
576
577 ✗ static void handle_rendition_args(void *vinfo, const char *key,
578 int key_len, char **dest, int *dest_len)
579 {
580 ✗ struct rendition_info *info = vinfo;
581
582 ✗ if (!strncmp(key, "TYPE=", key_len)) {
583 ✗ *dest = info->type;
584 ✗ *dest_len = sizeof(info->type);
585 ✗ } else if (!strncmp(key, "URI=", key_len)) {
586 ✗ *dest = info->uri;
587 ✗ *dest_len = sizeof(info->uri);
588 ✗ } else if (!strncmp(key, "GROUP-ID=", key_len)) {
589 ✗ *dest = info->group_id;
590 ✗ *dest_len = sizeof(info->group_id);
591 ✗ } else if (!strncmp(key, "LANGUAGE=", key_len)) {
592 ✗ *dest = info->language;
593 ✗ *dest_len = sizeof(info->language);
594 ✗ } else if (!strncmp(key, "ASSOC-LANGUAGE=", key_len)) {
595 ✗ *dest = info->assoc_language;
596 ✗ *dest_len = sizeof(info->assoc_language);
597 ✗ } else if (!strncmp(key, "NAME=", key_len)) {
598 ✗ *dest = info->name;
599 ✗ *dest_len = sizeof(info->name);
600 ✗ } else if (!strncmp(key, "DEFAULT=", key_len)) {
601 ✗ *dest = info->defaultr;
602 ✗ *dest_len = sizeof(info->defaultr);
603 ✗ } else if (!strncmp(key, "FORCED=", key_len)) {
604 ✗ *dest = info->forced;
605 ✗ *dest_len = sizeof(info->forced);
606 ✗ } else if (!strncmp(key, "CHARACTERISTICS=", key_len)) {
607 ✗ *dest = info->characteristics;
608 ✗ *dest_len = sizeof(info->characteristics);
609 }
610 /*
611 * ignored:
612 * - AUTOSELECT: client may autoselect based on e.g. system language
613 * - INSTREAM-ID: EIA-608 closed caption number ("CC1".."CC4")
614 */
615 ✗ }
616
617 /* used by parse_playlist to allocate a new variant+playlist when the
618 * playlist is detected to be a Media Playlist (not Master Playlist)
619 * and we have no parent Master Playlist (parsing of which would have
620 * allocated the variant and playlist already)
621 * *pls == NULL => Master Playlist or parentless Media Playlist
622 * *pls != NULL => parented Media Playlist, playlist+variant allocated */
623 103 static int ensure_playlist(HLSContext *c, struct playlist **pls, const char *url)
624 {
625
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 103 if (*pls)
626 89 return 0;
627
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 14 if (!new_variant(c, NULL, url, NULL))
628 ✗ return AVERROR(ENOMEM);
629 14 *pls = c->playlists[c->n_playlists - 1];
630 14 return 0;
631 }
632
633 ✗ static int open_url_keepalive(AVFormatContext *s, AVIOContext **pb,
634 const char *url, AVDictionary **options)
635 {
636 #if !CONFIG_HTTP_PROTOCOL
637 return AVERROR_PROTOCOL_NOT_FOUND;
638 #else
639 int ret;
640 ✗ URLContext *uc = ffio_geturlcontext(*pb);
641 ✗ av_assert0(uc);
642 ✗ (*pb)->eof_reached = 0;
643 ✗ ret = ff_http_do_new_request2(uc, url, options);
644 ✗ if (ret < 0) {
645 ✗ ff_format_io_close(s, pb);
646 }
647 ✗ return ret;
648 #endif
649 }
650
651 67 static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
652 AVDictionary **opts, AVDictionary *opts2, int *is_http_out)
653 {
654 67 HLSContext *c = s->priv_data;
655 67 AVDictionary *tmp = NULL;
656 67 const char *proto_name = NULL;
657 int ret;
658 67 int is_http = 0;
659
660
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 67 if (av_strstart(url, "crypto", NULL)) {
661 ✗ if (url[6] == '+' || url[6] == ':')
662 ✗ proto_name = avio_find_protocol_name(url + 7);
663
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 67 } else if (av_strstart(url, "data", NULL)) {
664 ✗ if (url[4] == '+' || url[4] == ':')
665 ✗ proto_name = avio_find_protocol_name(url + 5);
666 }
667
668
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 67 if (!proto_name)
669 67 proto_name = avio_find_protocol_name(url);
670
671
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 67 if (!proto_name)
672 ✗ return AVERROR_INVALIDDATA;
673
674 // only http(s) & file are allowed
675
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 67 if (av_strstart(proto_name, "file", NULL)) {
676
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 67 if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
677 ✗ av_log(s, AV_LOG_ERROR,
678 "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
679 "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
680 url);
681 ✗ return AVERROR_INVALIDDATA;
682 }
683 ✗ } else if (av_strstart(proto_name, "http", NULL)) {
684 ✗ is_http = 1;
685 ✗ } else if (av_strstart(proto_name, "data", NULL)) {
686 ;
687 } else
688 ✗ return AVERROR_INVALIDDATA;
689
690
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 67 if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
691 ;
692
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 67 else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
693 ;
694
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 67 else if (av_strstart(url, "data", NULL) && !strncmp(proto_name, url + 5, strlen(proto_name)) && url[5 + strlen(proto_name)] == ':')
695 ;
696
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 67 else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
697 ✗ return AVERROR_INVALIDDATA;
698
699 67 av_dict_copy(&tmp, *opts, 0);
700 67 av_dict_copy(&tmp, opts2, 0);
701
702
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 67 if (is_http && c->http_persistent && *pb) {
703 ✗ ret = open_url_keepalive(c->ctx, pb, url, &tmp);
704 ✗ if (ret == AVERROR_EXIT) {
705 ✗ av_dict_free(&tmp);
706 ✗ return ret;
707 ✗ } else if (ret < 0) {
708 ✗ if (ret != AVERROR_EOF)
709 ✗ av_log(s, AV_LOG_WARNING,
710 "keepalive request failed for '%s' with error: '%s' when opening url, retrying with new connection\n",
711 ✗ url, av_err2str(ret));
712 ✗ av_dict_copy(&tmp, *opts, 0);
713 ✗ av_dict_copy(&tmp, opts2, 0);
714 ✗ ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
715 }
716 } else {
717 67 ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
718 }
719
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 67 if (ret >= 0) {
720 // update cookies on http response with setcookies.
721 67 char *new_cookies = NULL;
722
723
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 67 if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
724 67 av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
725
726
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 67 if (new_cookies)
727 ✗ av_dict_set(opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
728 }
729
730 67 av_dict_free(&tmp);
731
732
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 67 if (is_http_out)
733 67 *is_http_out = is_http;
734
735 67 return ret;
736 }
737
738 146 static int test_segment(AVFormatContext *s, const AVInputFormat *in_fmt, struct playlist *pls, struct segment *seg)
739 {
740 146 HLSContext *c = s->priv_data;
741 146 int matchA = 3;
742 146 int matchF = 0;
743
744
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 146 if (!c->extension_picky)
745 ✗ return 0;
746
747
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 146 if (strcmp(c->allowed_segment_extensions, "ALL"))
748 292 matchA = av_match_ext (seg->url, c->allowed_segment_extensions)
749
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 146 + 2*(ff_match_url_ext(seg->url, c->allowed_segment_extensions) > 0);
750
751
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 146 if (!matchA) {
752 ✗ av_log(s, AV_LOG_ERROR, "URL %s is not in allowed_segment_extensions, consider updating hls.c and submitting a patch to ffmpeg-devel, if this should be added\n", seg->url);
753 ✗ return AVERROR_INVALIDDATA;
754 }
755
756
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 146 if (in_fmt) {
757
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 73 if (in_fmt->extensions) {
758 4 matchF = av_match_ext( seg->url, in_fmt->extensions)
759
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 4 + 2*(ff_match_url_ext(seg->url, in_fmt->extensions) > 0);
760 // Youtube uses aac files with .ts extension
761
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 4 if(av_match_name("mp4", in_fmt->name) || av_match_name("aac", in_fmt->name)) {
762 1 matchF |= av_match_ext( seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts,cmfv,cmfa")
763
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 1 + 2*(ff_match_url_ext(seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts,cmfv,cmfa") > 0);
764 }
765
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 69 } else if (!strcmp(in_fmt->name, "mpegts")) {
766 69 const char *str = "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts"
767 ",html" // https://flash1.bogulus.cfd/
768 ;
769 138 matchF = av_match_ext( seg->url, str)
770
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 69 + 2*(ff_match_url_ext(seg->url, str) > 0);
771 ✗ } else if (!strcmp(in_fmt->name, "webvtt")) {
772 ✗ matchF = av_match_ext( seg->url, "vtt,webvtt")
773 ✗ + 2*(ff_match_url_ext(seg->url, "vtt,webvtt") > 0);
774 }
775
776
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 73 if (!(matchA & matchF)) {
777 ✗ av_log(s, AV_LOG_ERROR, "detected format %s extension %s mismatches allowed extensions in url %s\n", in_fmt->name, in_fmt->extensions ? in_fmt->extensions : "none", seg->url);
778 ✗ return AVERROR_INVALIDDATA;
779 }
780 }
781
782 146 return 0;
783 }
784
785 14 static int parse_playlist(HLSContext *c, const char *url,
786 struct playlist *pls, AVIOContext *in)
787 {
788 14 int ret = 0, is_segment = 0, is_variant = 0;
789 14 int64_t duration = 0;
790 14 enum KeyType key_type = KEY_NONE;
791 14 uint8_t iv[16] = "";
792 14 int has_iv = 0;
793 14 char key[MAX_URL_SIZE] = "";
794 char line[MAX_URL_SIZE];
795 const char *ptr;
796 14 int close_in = 0;
797 14 int64_t seg_offset = 0;
798 14 int64_t seg_size = -1;
799 14 uint8_t *new_url = NULL;
800 struct variant_info variant_info;
801 char tmp_str[MAX_URL_SIZE];
802 14 struct segment *cur_init_section = NULL;
803 14 int is_http = av_strstart(url, "http", NULL);
804 14 struct segment **prev_segments = NULL;
805 14 int prev_n_segments = 0;
806 14 int64_t prev_start_seq_no = -1;
807
808
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 14 if (is_http && !in && c->http_persistent && c->playlist_pb) {
809 ✗ in = c->playlist_pb;
810 ✗ ret = open_url_keepalive(c->ctx, &c->playlist_pb, url, NULL);
811 ✗ if (ret == AVERROR_EXIT) {
812 ✗ return ret;
813 ✗ } else if (ret < 0) {
814 ✗ if (ret != AVERROR_EOF)
815 ✗ av_log(c->ctx, AV_LOG_WARNING,
816 "keepalive request failed for '%s' with error: '%s' when parsing playlist\n",
817 ✗ url, av_err2str(ret));
818 ✗ in = NULL;
819 }
820 }
821
822
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 14 if (!in) {
823 ✗ AVDictionary *opts = NULL;
824 ✗ av_dict_copy(&opts, c->avio_opts, 0);
825
826 ✗ if (c->http_persistent)
827 ✗ av_dict_set(&opts, "multiple_requests", "1", 0);
828
829 ✗ ret = c->ctx->io_open(c->ctx, &in, url, AVIO_FLAG_READ, &opts);
830 ✗ av_dict_free(&opts);
831 ✗ if (ret < 0)
832 ✗ return ret;
833
834 ✗ if (is_http && c->http_persistent)
835 ✗ c->playlist_pb = in;
836 else
837 ✗ close_in = 1;
838 }
839
840
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 14 if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0)
841 ✗ url = new_url;
842
843 14 ff_get_chomp_line(in, line, sizeof(line));
844
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 14 if (strcmp(line, "#EXTM3U")) {
845 ✗ ret = AVERROR_INVALIDDATA;
846 ✗ goto fail;
847 }
848
849
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✓ Branch 1 taken 14 times.
 14 if (pls) {
850 ✗ prev_start_seq_no = pls->start_seq_no;
851 ✗ prev_segments = pls->segments;
852 ✗ prev_n_segments = pls->n_segments;
853 ✗ pls->segments = NULL;
854 ✗ pls->n_segments = 0;
855
856 ✗ pls->finished = 0;
857 ✗ pls->type = PLS_TYPE_UNSPECIFIED;
858 }
859
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 254 while (!avio_feof(in)) {
860 240 ff_get_chomp_line(in, line, sizeof(line));
861
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 240 if (av_strstart(line, "#EXT-X-STREAM-INF:", &ptr)) {
862 ✗ is_variant = 1;
863 ✗ memset(&variant_info, 0, sizeof(variant_info));
864 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_variant_args,
865 &variant_info);
866
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 240 } else if (av_strstart(line, "#EXT-X-KEY:", &ptr)) {
867 ✗ struct key_info info = {{0}};
868 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_key_args,
869 &info);
870 ✗ key_type = KEY_NONE;
871 ✗ has_iv = 0;
872 ✗ if (!strcmp(info.method, "AES-128"))
873 ✗ key_type = KEY_AES_128;
874 ✗ if (!strcmp(info.method, "SAMPLE-AES"))
875 ✗ key_type = KEY_SAMPLE_AES;
876 ✗ if (!av_strncasecmp(info.iv, "0x", 2)) {
877 ✗ ff_hex_to_data(iv, info.iv + 2);
878 ✗ has_iv = 1;
879 }
880 ✗ av_strlcpy(key, info.uri, sizeof(key));
881
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 240 } else if (av_strstart(line, "#EXT-X-MEDIA:", &ptr)) {
882 ✗ struct rendition_info info = {{0}};
883 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_rendition_args,
884 &info);
885 ✗ new_rendition(c, &info, url);
886
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 240 } else if (av_strstart(line, "#EXT-X-TARGETDURATION:", &ptr)) {
887 int64_t t;
888 14 ret = ensure_playlist(c, &pls, url);
889
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 14 if (ret < 0)
890 ✗ goto fail;
891 14 t = strtoll(ptr, NULL, 10);
892
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✓ Branch 3 taken 14 times.
 14 if (t < 0 || t >= INT64_MAX / AV_TIME_BASE) {
893 ✗ ret = AVERROR_INVALIDDATA;
894 ✗ goto fail;
895 }
896 14 pls->target_duration = t * AV_TIME_BASE;
897
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✓ Branch 2 taken 212 times.
 226 } else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
898 uint64_t seq_no;
899 14 ret = ensure_playlist(c, &pls, url);
900
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 14 if (ret < 0)
901 ✗ goto fail;
902 14 seq_no = strtoull(ptr, NULL, 10);
903
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 14 if (seq_no > INT64_MAX/2) {
904 ✗ av_log(c->ctx, AV_LOG_DEBUG, "MEDIA-SEQUENCE higher than "
905 "INT64_MAX/2, mask out the highest bit\n");
906 ✗ seq_no &= INT64_MAX/2;
907 }
908 14 pls->start_seq_no = seq_no;
909
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 212 } else if (av_strstart(line, "#EXT-X-PLAYLIST-TYPE:", &ptr)) {
910 1 ret = ensure_playlist(c, &pls, url);
911
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 1 if (ret < 0)
912 ✗ goto fail;
913
1/2
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 1 if (!strcmp(ptr, "EVENT"))
914 1 pls->type = PLS_TYPE_EVENT;
915 ✗ else if (!strcmp(ptr, "VOD"))
916 ✗ pls->type = PLS_TYPE_VOD;
917
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 211 } else if (av_strstart(line, "#EXT-X-MAP:", &ptr)) {
918 1 struct init_section_info info = {{0}};
919 1 ret = ensure_playlist(c, &pls, url);
920
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 1 if (ret < 0)
921 ✗ goto fail;
922 1 ff_parse_key_value(ptr, handle_init_section_args, &info);
923 1 cur_init_section = new_init_section(pls, &info, url);
924
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 1 if (!cur_init_section) {
925 ✗ ret = AVERROR(ENOMEM);
926 ✗ goto fail;
927 }
928 1 cur_init_section->key_type = key_type;
929
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 1 if (has_iv) {
930 ✗ memcpy(cur_init_section->iv, iv, sizeof(iv));
931 } else {
932 1 int64_t seq = pls->start_seq_no + pls->n_segments;
933 1 memset(cur_init_section->iv, 0, sizeof(cur_init_section->iv));
934 1 AV_WB64(cur_init_section->iv + 8, seq);
935 }
936
937
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 1 if (key_type != KEY_NONE) {
938 ✗ ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
939 ✗ if (!tmp_str[0]) {
940 ✗ av_free(cur_init_section);
941 ✗ ret = AVERROR_INVALIDDATA;
942 ✗ goto fail;
943 }
944 ✗ cur_init_section->key = av_strdup(tmp_str);
945 ✗ if (!cur_init_section->key) {
946 ✗ av_free(cur_init_section);
947 ✗ ret = AVERROR(ENOMEM);
948 ✗ goto fail;
949 }
950 } else {
951 1 cur_init_section->key = NULL;
952 }
953
954
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 210 } else if (av_strstart(line, "#EXT-X-START:", &ptr)) {
955 ✗ const char *time_offset_value = NULL;
956 ✗ ret = ensure_playlist(c, &pls, url);
957 ✗ if (ret < 0) {
958 ✗ goto fail;
959 }
960 ✗ if (av_strstart(ptr, "TIME-OFFSET=", &time_offset_value)) {
961 ✗ float offset = strtof(time_offset_value, NULL);
962 ✗ pls->start_time_offset = offset * AV_TIME_BASE;
963 ✗ pls->time_offset_flag = 1;
964 } else {
965 ✗ av_log(c->ctx, AV_LOG_WARNING, "#EXT-X-START value is"
966 "invalid, it will be ignored");
967 ✗ continue;
968 }
969
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 210 } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) {
970
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 12 if (pls)
971 12 pls->finished = 1;
972
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 198 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
973 73 double d = atof(ptr) * AV_TIME_BASE;
974
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 73 if (d < 0 || d > INT64_MAX || isnan(d)) {
975 ✗ av_log(c->ctx, AV_LOG_WARNING, "EXTINF %f unsupported\n", d / AV_TIME_BASE);
976 ✗ d = 0;
977 }
978 73 duration = d;
979 73 is_segment = 1;
980
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 125 } else if (av_strstart(line, "#EXT-X-BYTERANGE:", &ptr)) {
981 20 seg_size = strtoll(ptr, NULL, 10);
982 20 ptr = strchr(ptr, '@');
983
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 20 if (ptr)
984 20 seg_offset = strtoll(ptr+1, NULL, 10);
985
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 20 if (seg_size < 0 || seg_offset > INT64_MAX - seg_size) {
986 ✗ ret = AVERROR_INVALIDDATA;
987 ✗ goto fail;
988 }
989
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 105 } else if (av_strstart(line, "#", NULL)) {
990 18 av_log(c->ctx, AV_LOG_VERBOSE, "Skip ('%s')\n", line);
991 18 continue;
992
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 87 } else if (line[0]) {
993
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 73 if (is_variant) {
994 ✗ if (!new_variant(c, &variant_info, line, url)) {
995 ✗ ret = AVERROR(ENOMEM);
996 ✗ goto fail;
997 }
998 ✗ is_variant = 0;
999 }
1000
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 73 if (is_segment) {
1001 struct segment *seg;
1002 73 ret = ensure_playlist(c, &pls, url);
1003
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 73 if (ret < 0)
1004 ✗ goto fail;
1005 73 seg = av_malloc(sizeof(struct segment));
1006
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 73 if (!seg) {
1007 ✗ ret = AVERROR(ENOMEM);
1008 ✗ goto fail;
1009 }
1010
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 73 if (has_iv) {
1011 ✗ memcpy(seg->iv, iv, sizeof(iv));
1012 } else {
1013 73 uint64_t seq = pls->start_seq_no + (uint64_t)pls->n_segments;
1014 73 memset(seg->iv, 0, sizeof(seg->iv));
1015 73 AV_WB64(seg->iv + 8, seq);
1016 }
1017
1018
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 73 if (key_type != KEY_NONE) {
1019 ✗ ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
1020 ✗ if (!tmp_str[0]) {
1021 ✗ ret = AVERROR_INVALIDDATA;
1022 ✗ av_free(seg);
1023 ✗ goto fail;
1024 }
1025 ✗ seg->key = av_strdup(tmp_str);
1026 ✗ if (!seg->key) {
1027 ✗ av_free(seg);
1028 ✗ ret = AVERROR(ENOMEM);
1029 ✗ goto fail;
1030 }
1031 } else {
1032 73 seg->key = NULL;
1033 }
1034
1035 73 ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, line);
1036
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 73 if (!tmp_str[0]) {
1037 ✗ ret = AVERROR_INVALIDDATA;
1038 ✗ if (seg->key)
1039 ✗ av_free(seg->key);
1040 ✗ av_free(seg);
1041 ✗ goto fail;
1042 }
1043 73 seg->url = av_strdup(tmp_str);
1044
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 73 if (!seg->url) {
1045 ✗ av_free(seg->key);
1046 ✗ av_free(seg);
1047 ✗ ret = AVERROR(ENOMEM);
1048 ✗ goto fail;
1049 }
1050
1051
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 73 ret = test_segment(c->ctx, pls->ctx ? pls->ctx->iformat : NULL, pls, seg);
1052
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 73 if (ret < 0) {
1053 ✗ av_free(seg->url);
1054 ✗ av_free(seg->key);
1055 ✗ av_free(seg);
1056 ✗ goto fail;
1057 }
1058
1059
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 73 if (duration < 0.001 * AV_TIME_BASE) {
1060 ✗ av_log(c->ctx, AV_LOG_WARNING, "Cannot get correct #EXTINF value of segment %s,"
1061 " set to default value to 1ms.\n", seg->url);
1062 ✗ duration = 0.001 * AV_TIME_BASE;
1063 }
1064 73 seg->duration = duration;
1065 73 seg->key_type = key_type;
1066 73 dynarray_add(&pls->segments, &pls->n_segments, seg);
1067 73 is_segment = 0;
1068
1069 73 seg->size = seg_size;
1070
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 73 if (seg_size >= 0) {
1071 20 seg->url_offset = seg_offset;
1072 20 seg_offset += seg_size;
1073 20 seg_size = -1;
1074 } else {
1075 53 seg->url_offset = 0;
1076 53 seg_offset = 0;
1077 }
1078
1079 73 seg->init_section = cur_init_section;
1080 }
1081 }
1082 }
1083
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 14 if (prev_segments) {
1084 ✗ if (pls->start_seq_no > prev_start_seq_no && c->first_timestamp != AV_NOPTS_VALUE) {
1085 ✗ int64_t prev_timestamp = c->first_timestamp;
1086 int i;
1087 ✗ int64_t diff = pls->start_seq_no - prev_start_seq_no;
1088 ✗ for (i = 0; i < prev_n_segments && i < diff; i++) {
1089 ✗ c->first_timestamp += prev_segments[i]->duration;
1090 }
1091 ✗ av_log(c->ctx, AV_LOG_DEBUG, "Media sequence change (%"PRId64" -> %"PRId64")"
1092 " reflected in first_timestamp: %"PRId64" -> %"PRId64"\n",
1093 ✗ prev_start_seq_no, pls->start_seq_no,
1094 prev_timestamp, c->first_timestamp);
1095 ✗ } else if (pls->start_seq_no < prev_start_seq_no) {
1096 ✗ av_log(c->ctx, AV_LOG_WARNING, "Media sequence changed unexpectedly: %"PRId64" -> %"PRId64"\n",
1097 ✗ prev_start_seq_no, pls->start_seq_no);
1098 }
1099 ✗ free_segment_dynarray(prev_segments, prev_n_segments);
1100 ✗ av_freep(&prev_segments);
1101 }
1102
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 14 if (pls)
1103 14 pls->last_load_time = av_gettime_relative();
1104
1105 ✗ fail:
1106 14 av_free(new_url);
1107
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 14 if (close_in)
1108 ✗ ff_format_io_close(c->ctx, &in);
1109 14 c->ctx->ctx_flags = c->ctx->ctx_flags & ~(unsigned)AVFMTCTX_UNSEEKABLE;
1110
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 14 if (!c->n_variants || !c->variants[0]->n_playlists ||
1111
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 14 !(c->variants[0]->playlists[0]->finished ||
1112
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✓ Branch 1 taken 1 times.
 2 c->variants[0]->playlists[0]->type == PLS_TYPE_EVENT))
1113 1 c->ctx->ctx_flags |= AVFMTCTX_UNSEEKABLE;
1114
1115
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 14 if (c->n_variants && c->variants[0]->n_playlists &&
1116
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✓ Branch 1 taken 13 times.
 14 c->variants[0]->playlists[0]->type == PLS_TYPE_EVENT &&
1117
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 1 !c->variants[0]->playlists[0]->finished) {
1118 1 struct playlist *p = c->variants[0]->playlists[0];
1119 1 int64_t duration = 0;
1120
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 8 for (int i = 0; i < p->n_segments; i++)
1121 7 duration += p->segments[i]->duration;
1122 1 c->ctx->duration = duration;
1123 }
1124
1125 14 return ret;
1126 }
1127
1128 7460 static struct segment *current_segment(struct playlist *pls)
1129 {
1130 7460 int64_t n = pls->cur_seq_no - pls->start_seq_no;
1131
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 7460 if (n >= pls->n_segments)
1132 2 return NULL;
1133 7458 return pls->segments[n];
1134 }
1135
1136 383 static struct segment *next_segment(struct playlist *pls)
1137 {
1138 383 int64_t n = pls->cur_seq_no - pls->start_seq_no + 1;
1139
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 383 if (n >= pls->n_segments)
1140 75 return NULL;
1141 308 return pls->segments[n];
1142 }
1143
1144 383 static int read_from_url(struct playlist *pls, struct segment *seg,
1145 uint8_t *buf, int buf_size)
1146 {
1147 int ret;
1148
1149 /* limit read if the segment was only a part of a file */
1150
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 383 if (seg->size >= 0)
1151 100 buf_size = FFMIN(buf_size, seg->size - pls->cur_seg_offset);
1152
1153 383 ret = avio_read(pls->input, buf, buf_size);
1154
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 383 if (ret > 0)
1155 321 pls->cur_seg_offset += ret;
1156
1157 383 return ret;
1158 }
1159
1160 /* Parse the raw ID3 data and pass contents to caller */
1161 ✗ static void parse_id3(AVFormatContext *s, AVIOContext *pb,
1162 AVDictionary **metadata, int64_t *dts, HLSAudioSetupInfo *audio_setup_info,
1163 ID3v2ExtraMetaAPIC **apic, ID3v2ExtraMeta **extra_meta)
1164 {
1165 static const char id3_priv_owner_ts[] = "com.apple.streaming.transportStreamTimestamp";
1166 static const char id3_priv_owner_audio_setup[] = "com.apple.streaming.audioDescription";
1167 ID3v2ExtraMeta *meta;
1168
1169 ✗ ff_id3v2_read_dict(pb, metadata, ID3v2_DEFAULT_MAGIC, extra_meta);
1170 ✗ for (meta = *extra_meta; meta; meta = meta->next) {
1171 ✗ if (!strcmp(meta->tag, "PRIV")) {
1172 ✗ ID3v2ExtraMetaPRIV *priv = &meta->data.priv;
1173 ✗ if (priv->datasize == 8 && !av_strncasecmp(priv->owner, id3_priv_owner_ts, 44)) {
1174 /* 33-bit MPEG timestamp */
1175 ✗ int64_t ts = AV_RB64(priv->data);
1176 ✗ av_log(s, AV_LOG_DEBUG, "HLS ID3 audio timestamp %"PRId64"\n", ts);
1177 ✗ if ((ts & ~((1ULL << 33) - 1)) == 0)
1178 ✗ *dts = ts;
1179 else
1180 ✗ av_log(s, AV_LOG_ERROR, "Invalid HLS ID3 audio timestamp %"PRId64"\n", ts);
1181 ✗ } else if (priv->datasize >= 8 && !av_strncasecmp(priv->owner, id3_priv_owner_audio_setup, 36)) {
1182 ✗ ff_hls_senc_read_audio_setup_info(audio_setup_info, priv->data, priv->datasize);
1183 }
1184 ✗ } else if (!strcmp(meta->tag, "APIC") && apic)
1185 ✗ *apic = &meta->data.apic;
1186 }
1187 ✗ }
1188
1189 /* Check if the ID3 metadata contents have changed */
1190 ✗ static int id3_has_changed_values(struct playlist *pls, AVDictionary *metadata,
1191 ID3v2ExtraMetaAPIC *apic)
1192 {
1193 ✗ const AVDictionaryEntry *entry = NULL;
1194 const AVDictionaryEntry *oldentry;
1195 /* check that no keys have changed values */
1196 ✗ while ((entry = av_dict_iterate(metadata, entry))) {
1197 ✗ oldentry = av_dict_get(pls->id3_initial, entry->key, NULL, AV_DICT_MATCH_CASE);
1198 ✗ if (!oldentry || strcmp(oldentry->value, entry->value) != 0)
1199 ✗ return 1;
1200 }
1201
1202 /* check if apic appeared */
1203 ✗ if (apic && (pls->ctx->nb_streams != 2 || !pls->ctx->streams[1]->attached_pic.data))
1204 ✗ return 1;
1205
1206 ✗ if (apic) {
1207 ✗ int size = pls->ctx->streams[1]->attached_pic.size;
1208 ✗ if (size != apic->buf->size - AV_INPUT_BUFFER_PADDING_SIZE)
1209 ✗ return 1;
1210
1211 ✗ if (memcmp(apic->buf->data, pls->ctx->streams[1]->attached_pic.data, size) != 0)
1212 ✗ return 1;
1213 }
1214
1215 ✗ return 0;
1216 }
1217
1218 /* Parse ID3 data and handle the found data */
1219 ✗ static void handle_id3(AVIOContext *pb, struct playlist *pls)
1220 {
1221 ✗ AVDictionary *metadata = NULL;
1222 ✗ ID3v2ExtraMetaAPIC *apic = NULL;
1223 ✗ ID3v2ExtraMeta *extra_meta = NULL;
1224 ✗ int64_t timestamp = AV_NOPTS_VALUE;
1225
1226 ✗ parse_id3(pls->ctx, pb, &metadata, &timestamp, &pls->audio_setup_info, &apic, &extra_meta);
1227
1228 ✗ if (timestamp != AV_NOPTS_VALUE) {
1229 ✗ pls->id3_mpegts_timestamp = timestamp;
1230 ✗ pls->id3_offset = 0;
1231 }
1232
1233 ✗ if (!pls->id3_found) {
1234 /* initial ID3 tags */
1235 ✗ av_assert0(!pls->id3_deferred_extra);
1236 ✗ pls->id3_found = 1;
1237
1238 /* get picture attachment and set text metadata */
1239 ✗ if (pls->ctx->nb_streams)
1240 ✗ ff_id3v2_parse_apic(pls->ctx, extra_meta);
1241 else
1242 /* demuxer not yet opened, defer picture attachment */
1243 ✗ pls->id3_deferred_extra = extra_meta;
1244
1245 ✗ ff_id3v2_parse_priv_dict(&metadata, extra_meta);
1246 ✗ av_dict_copy(&pls->ctx->metadata, metadata, 0);
1247 ✗ pls->id3_initial = metadata;
1248
1249 } else {
1250 ✗ if (!pls->id3_changed && id3_has_changed_values(pls, metadata, apic)) {
1251 ✗ avpriv_report_missing_feature(pls->parent, "Changing ID3 metadata in HLS audio elementary stream");
1252 ✗ pls->id3_changed = 1;
1253 }
1254 ✗ av_dict_free(&metadata);
1255 }
1256
1257 ✗ if (!pls->id3_deferred_extra)
1258 ✗ ff_id3v2_free_extra_meta(&extra_meta);
1259 ✗ }
1260
1261 13 static void intercept_id3(struct playlist *pls, uint8_t *buf,
1262 int buf_size, int *len)
1263 {
1264 /* intercept id3 tags, we do not want to pass them to the raw
1265 * demuxer on all segment switches */
1266 int bytes;
1267 13 int id3_buf_pos = 0;
1268 13 int fill_buf = 0;
1269 13 struct segment *seg = current_segment(pls);
1270
1271 /* gather all the id3 tags */
1272 while (1) {
1273 /* see if we can retrieve enough data for ID3 header */
1274
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 13 if (*len < ID3v2_HEADER_SIZE && buf_size >= ID3v2_HEADER_SIZE) {
1275 ✗ bytes = read_from_url(pls, seg, buf + *len, ID3v2_HEADER_SIZE - *len);
1276 ✗ if (bytes > 0) {
1277
1278 ✗ if (bytes == ID3v2_HEADER_SIZE - *len)
1279 /* no EOF yet, so fill the caller buffer again after
1280 * we have stripped the ID3 tags */
1281 ✗ fill_buf = 1;
1282
1283 ✗ *len += bytes;
1284
1285 ✗ } else if (*len <= 0) {
1286 /* error/EOF */
1287 ✗ *len = bytes;
1288 ✗ fill_buf = 0;
1289 }
1290 }
1291
1292
1/2
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 13 if (*len < ID3v2_HEADER_SIZE)
1293 ✗ break;
1294
1295
1/2
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 13 if (ff_id3v2_match(buf, ID3v2_DEFAULT_MAGIC)) {
1296 ✗ int64_t maxsize = seg->size >= 0 ? seg->size : 1024*1024;
1297 ✗ int taglen = ff_id3v2_tag_len(buf);
1298 ✗ int tag_got_bytes = FFMIN(taglen, *len);
1299 ✗ int remaining = taglen - tag_got_bytes;
1300
1301 ✗ if (taglen > maxsize) {
1302 ✗ av_log(pls->parent, AV_LOG_ERROR, "Too large HLS ID3 tag (%d > %"PRId64" bytes)\n",
1303 taglen, maxsize);
1304 ✗ break;
1305 }
1306
1307 /*
1308 * Copy the id3 tag to our temporary id3 buffer.
1309 * We could read a small id3 tag directly without memcpy, but
1310 * we would still need to copy the large tags, and handling
1311 * both of those cases together with the possibility for multiple
1312 * tags would make the handling a bit complex.
1313 */
1314 ✗ pls->id3_buf = av_fast_realloc(pls->id3_buf, &pls->id3_buf_size, id3_buf_pos + taglen);
1315 ✗ if (!pls->id3_buf)
1316 ✗ break;
1317 ✗ memcpy(pls->id3_buf + id3_buf_pos, buf, tag_got_bytes);
1318 ✗ id3_buf_pos += tag_got_bytes;
1319
1320 /* strip the intercepted bytes */
1321 ✗ *len -= tag_got_bytes;
1322 ✗ memmove(buf, buf + tag_got_bytes, *len);
1323 ✗ av_log(pls->parent, AV_LOG_DEBUG, "Stripped %d HLS ID3 bytes\n", tag_got_bytes);
1324
1325 ✗ if (remaining > 0) {
1326 /* read the rest of the tag in */
1327 ✗ if (read_from_url(pls, seg, pls->id3_buf + id3_buf_pos, remaining) != remaining)
1328 ✗ break;
1329 ✗ id3_buf_pos += remaining;
1330 ✗ av_log(pls->parent, AV_LOG_DEBUG, "Stripped additional %d HLS ID3 bytes\n", remaining);
1331 }
1332
1333 } else {
1334 /* no more ID3 tags */
1335 13 break;
1336 }
1337 }
1338
1339 /* re-fill buffer for the caller unless EOF */
1340
3/6
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 13 if (*len >= 0 && (fill_buf || *len == 0)) {
1341 ✗ bytes = read_from_url(pls, seg, buf + *len, buf_size - *len);
1342
1343 /* ignore error if we already had some data */
1344 ✗ if (bytes >= 0)
1345 ✗ *len += bytes;
1346 ✗ else if (*len == 0)
1347 ✗ *len = bytes;
1348 }
1349
1350
1/2
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 13 if (pls->id3_buf) {
1351 /* Now parse all the ID3 tags */
1352 FFIOContext id3ioctx;
1353 ✗ ffio_init_read_context(&id3ioctx, pls->id3_buf, id3_buf_pos);
1354 ✗ handle_id3(&id3ioctx.pub, pls);
1355 }
1356
1357
1/2
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✗ Branch 1 not taken.
 13 if (pls->is_id3_timestamped == -1)
1358 13 pls->is_id3_timestamped = (pls->id3_mpegts_timestamp != AV_NOPTS_VALUE);
1359 13 }
1360
1361 ✗ static int read_key(HLSContext *c, struct playlist *pls, struct segment *seg)
1362 {
1363 ✗ AVIOContext *pb = NULL;
1364
1365 ✗ int ret = open_url(pls->parent, &pb, seg->key, &c->avio_opts, NULL, NULL);
1366 ✗ if (ret < 0) {
1367 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to open key file %s, %s\n",
1368 ✗ seg->key, av_err2str(ret));
1369 ✗ return ret;
1370 }
1371
1372 ✗ ret = avio_read(pb, pls->key, sizeof(pls->key));
1373 ✗ ff_format_io_close(pls->parent, &pb);
1374 ✗ if (ret != sizeof(pls->key)) {
1375 ✗ if (ret < 0) {
1376 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to read key file %s, %s\n",
1377 ✗ seg->key, av_err2str(ret));
1378 } else {
1379 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to read key file %s, read bytes %d != %zu\n",
1380 seg->key, ret, sizeof(pls->key));
1381 ✗ ret = AVERROR_INVALIDDATA;
1382 }
1383
1384 ✗ return ret;
1385 }
1386
1387 ✗ av_strlcpy(pls->key_url, seg->key, sizeof(pls->key_url));
1388
1389 ✗ return 0;
1390 }
1391
1392 67 static int open_input(HLSContext *c, struct playlist *pls, struct segment *seg, AVIOContext **in)
1393 {
1394 67 AVDictionary *opts = NULL;
1395 int ret;
1396 67 int is_http = 0;
1397
1398
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 67 if (c->http_persistent)
1399 67 av_dict_set(&opts, "multiple_requests", "1", 0);
1400
1401
2/2
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 67 if (seg->size >= 0) {
1402 /* try to restrict the HTTP request to the part we want
1403 * (if this is in fact a HTTP request) */
1404 20 av_dict_set_int(&opts, "offset", seg->url_offset, 0);
1405 20 av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
1406 }
1407
1408 67 av_log(pls->parent, AV_LOG_VERBOSE, "HLS request for url '%s', offset %"PRId64", playlist %d\n",
1409 seg->url, seg->url_offset, pls->index);
1410
1411
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 67 if (seg->key_type == KEY_AES_128 || seg->key_type == KEY_SAMPLE_AES) {
1412 ✗ if (strcmp(seg->key, pls->key_url)) {
1413 ✗ ret = read_key(c, pls, seg);
1414 ✗ if (ret < 0)
1415 ✗ goto cleanup;
1416 }
1417 }
1418
1419
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 67 if (seg->key_type == KEY_AES_128) {
1420 char iv[33], key[33], url[MAX_URL_SIZE];
1421 ✗ ff_data_to_hex(iv, seg->iv, sizeof(seg->iv), 0);
1422 ✗ ff_data_to_hex(key, pls->key, sizeof(pls->key), 0);
1423 ✗ if (strstr(seg->url, "://"))
1424 ✗ snprintf(url, sizeof(url), "crypto+%s", seg->url);
1425 else
1426 ✗ snprintf(url, sizeof(url), "crypto:%s", seg->url);
1427
1428 ✗ av_dict_set(&opts, "key", key, 0);
1429 ✗ av_dict_set(&opts, "iv", iv, 0);
1430
1431 ✗ ret = open_url(pls->parent, in, url, &c->avio_opts, opts, &is_http);
1432 ✗ if (ret < 0) {
1433 ✗ goto cleanup;
1434 }
1435 ✗ ret = 0;
1436 } else {
1437 67 ret = open_url(pls->parent, in, seg->url, &c->avio_opts, opts, &is_http);
1438 }
1439
1440 /* Seek to the requested position. If this was a HTTP request, the offset
1441 * should already be where want it to, but this allows e.g. local testing
1442 * without a HTTP server.
1443 *
1444 * This is not done for HTTP at all as avio_seek() does internal bookkeeping
1445 * of file offset which is out-of-sync with the actual offset when "offset"
1446 * AVOption is used with http protocol, causing the seek to not be a no-op
1447 * as would be expected. Wrong offset received from the server will not be
1448 * noticed without the call, though.
1449 */
1450
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 67 if (ret == 0 && !is_http && seg->url_offset) {
1451 15 int64_t seekret = avio_seek(*in, seg->url_offset, SEEK_SET);
1452
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 15 if (seekret < 0) {
1453 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to seek to offset %"PRId64" of HLS segment '%s'\n", seg->url_offset, seg->url);
1454 ✗ ret = seekret;
1455 ✗ ff_format_io_close(pls->parent, in);
1456 }
1457 }
1458
1459 67 cleanup:
1460 67 av_dict_free(&opts);
1461 67 pls->cur_seg_offset = 0;
1462 67 return ret;
1463 }
1464
1465 66 static int update_init_section(struct playlist *pls, struct segment *seg)
1466 {
1467 static const int max_init_section_size = 1024*1024;
1468 66 HLSContext *c = pls->parent->priv_data;
1469 int64_t sec_size;
1470 int64_t urlsize;
1471 int ret;
1472
1473
2/2
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 66 if (seg->init_section == pls->cur_init_section)
1474 65 return 0;
1475
1476 1 pls->cur_init_section = NULL;
1477
1478
1/2
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 1 if (!seg->init_section)
1479 ✗ return 0;
1480
1481 1 ret = open_input(c, pls, seg->init_section, &pls->input);
1482
1/2
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 1 if (ret < 0) {
1483 ✗ av_log(pls->parent, AV_LOG_WARNING,
1484 "Failed to open an initialization section in playlist %d\n",
1485 pls->index);
1486 ✗ return ret;
1487 }
1488
1489
1/2
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 1 if (seg->init_section->size >= 0)
1490 ✗ sec_size = seg->init_section->size;
1491
1/2
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✗ Branch 2 not taken.
 1 else if ((urlsize = avio_size(pls->input)) >= 0)
1492 1 sec_size = urlsize;
1493 else
1494 ✗ sec_size = max_init_section_size;
1495
1496 1 av_log(pls->parent, AV_LOG_DEBUG,
1497 "Downloading an initialization section of size %"PRId64"\n",
1498 sec_size);
1499
1500 1 sec_size = FFMIN(sec_size, max_init_section_size);
1501
1502 1 av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
1503
1504 1 ret = read_from_url(pls, seg->init_section, pls->init_sec_buf,
1505 1 pls->init_sec_buf_size);
1506 1 ff_format_io_close(pls->parent, &pls->input);
1507
1508
1/2
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 1 if (ret < 0)
1509 ✗ return ret;
1510
1511 1 pls->cur_init_section = seg->init_section;
1512 1 pls->init_sec_data_len = ret;
1513 1 pls->init_sec_buf_read_offset = 0;
1514
1515 /* spec says audio elementary streams do not have media initialization
1516 * sections, so there should be no ID3 timestamps */
1517 1 pls->is_id3_timestamped = 0;
1518
1519 1 return 0;
1520 }
1521
1522 102 static int64_t default_reload_interval(struct playlist *pls)
1523 {
1524 102 return pls->n_segments > 0 ?
1525
1/2
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 102 pls->segments[pls->n_segments - 1]->duration :
1526 pls->target_duration;
1527 }
1528
1529 7057 static int playlist_needed(struct playlist *pls)
1530 {
1531 7057 AVFormatContext *s = pls->parent;
1532 int i, j;
1533 7057 int stream_needed = 0;
1534 int first_st;
1535
1536 /* If there is no context or streams yet, the playlist is needed */
1537
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 7057 if ((!pls->ctx || !pls->n_main_streams) && !pls->is_subtitle)
1538 29 return 1;
1539
1540 /* check if any of the streams in the playlist are needed */
1541
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 7028 for (i = 0; i < pls->n_main_streams; i++) {
1542
1/2
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 7028 if (pls->main_streams[i]->discard < AVDISCARD_ALL) {
1543 7028 stream_needed = 1;
1544 7028 break;
1545 }
1546 }
1547
1548 /* If all streams in the playlist were discarded, the playlist is not
1549 * needed (regardless of whether whole programs are discarded or not). */
1550
1/2
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✓ Branch 1 taken 7028 times.
 7028 if (!stream_needed)
1551 ✗ return 0;
1552
1553 /* Otherwise, check if all the programs (variants) this playlist is in are
1554 * discarded. Since all streams in the playlist are part of the same programs
1555 * we can just check the programs of the first stream. */
1556
1557 7028 first_st = pls->main_streams[0]->index;
1558
1559
1/2
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 7028 for (i = 0; i < s->nb_programs; i++) {
1560 7028 AVProgram *program = s->programs[i];
1561
1/2
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✗ Branch 1 not taken.
 7028 if (program->discard < AVDISCARD_ALL) {
1562
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 7028 for (j = 0; j < program->nb_stream_indexes; j++) {
1563
1/2
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 7028 if (program->stream_index[j] == first_st) {
1564 /* playlist is in an undiscarded program */
1565 7028 return 1;
1566 }
1567 }
1568 }
1569 }
1570
1571 /* some streams were not discarded but all the programs were */
1572 ✗ return 0;
1573 }
1574
1575 419 static int reload_playlist(struct playlist *v, HLSContext *c)
1576 {
1577 419 int ret = 0;
1578 419 int reload_count = 0;
1579
1580 419 v->needed = playlist_needed(v);
1581
1582
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 419 if (!v->needed)
1583 ✗ return AVERROR_EOF;
1584
1585
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 419 if (!v->input || (c->http_persistent && v->input_read_done)) {
1586 int64_t reload_interval;
1587
1588 /* Check that the playlist is still needed before opening a new
1589 * segment. */
1590 102 v->needed = playlist_needed(v);
1591
1592
1/2
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✓ Branch 1 taken 102 times.
 102 if (!v->needed) {
1593 ✗ av_log(v->parent, AV_LOG_INFO, "No longer receiving playlist %d ('%s')\n",
1594 ✗ v->index, v->url);
1595 ✗ return AVERROR_EOF;
1596 }
1597
1598 /* If this is a live stream and the reload interval has elapsed since
1599 * the last playlist reload, reload the playlists now. */
1600 102 reload_interval = default_reload_interval(v);
1601
1602 102 reload:
1603 102 reload_count++;
1604
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 102 if (reload_count > c->max_reload)
1605 ✗ return AVERROR_EOF;
1606
2/2
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 102 if (!v->finished &&
1607
1/2
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✓ Branch 2 taken 7 times.
 7 av_gettime_relative() - v->last_load_time >= reload_interval) {
1608 ✗ if ((ret = parse_playlist(c, v->url, v, NULL)) < 0) {
1609 ✗ if (ret != AVERROR_EXIT)
1610 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to reload playlist %d\n",
1611 v->index);
1612 ✗ return ret;
1613 }
1614 /* If we need to reload the playlist again below (if
1615 * there's still no more segments), switch to a reload
1616 * interval of half the target duration. */
1617 ✗ reload_interval = v->target_duration / 2;
1618 }
1619
1/2
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 102 if (v->cur_seq_no < v->start_seq_no) {
1620 ✗ av_log(v->parent, AV_LOG_WARNING,
1621 "skipping %"PRId64" segments ahead, expired from playlists\n",
1622 ✗ v->start_seq_no - v->cur_seq_no);
1623 ✗ v->cur_seq_no = v->start_seq_no;
1624 }
1625
2/2
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 102 if (v->cur_seq_no > v->last_seq_no) {
1626 67 v->last_seq_no = v->cur_seq_no;
1627 67 v->m3u8_hold_counters = 0;
1628
1/2
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✗ Branch 1 not taken.
 35 } else if (v->last_seq_no == v->cur_seq_no) {
1629 35 v->m3u8_hold_counters++;
1630
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 35 times.
 35 if (v->m3u8_hold_counters >= c->m3u8_hold_counters) {
1631 ✗ return AVERROR_EOF;
1632 }
1633 } else {
1634 ✗ av_log(v->parent, AV_LOG_WARNING, "The m3u8 list sequence may have been wrapped.\n");
1635 }
1636
2/2
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 102 if (v->cur_seq_no >= v->start_seq_no + v->n_segments) {
1637
1/4
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✗ Branch 2 not taken.
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 36 if (v->finished || v->is_subtitle)
1638 36 return AVERROR_EOF;
1639 ✗ while (av_gettime_relative() - v->last_load_time < reload_interval) {
1640 ✗ if (ff_check_interrupt(c->interrupt_callback))
1641 ✗ return AVERROR_EXIT;
1642 ✗ av_usleep(100*1000);
1643 }
1644 /* Enough time has elapsed since the last reload */
1645 ✗ goto reload;
1646 }
1647
1648 }
1649 383 return ret;
1650 }
1651
1652 357 static int read_data_continuous(void *opaque, uint8_t *buf, int buf_size)
1653 {
1654 357 struct playlist *v = opaque;
1655 357 HLSContext *c = v->parent->priv_data;
1656 int ret;
1657 357 int just_opened = 0;
1658 357 int segment_retries = 0;
1659 struct segment *seg;
1660
1661
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✓ Branch 3 taken 357 times.
 357 if (c->http_persistent && v->input_read_done) {
1662 ✗ ret = reload_playlist(v, c);
1663 ✗ if (ret < 0)
1664 ✗ return ret;
1665 }
1666
1667 357 v->input_read_done = 0;
1668
1669 62 restart:
1670 419 ret = reload_playlist(v, c);
1671
2/2
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✓ Branch 1 taken 383 times.
 419 if (ret < 0)
1672 36 return ret;
1673
1674 383 seg = current_segment(v);
1675
1676
4/6
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 383 if (!v->input || (c->http_persistent && v->input_read_done)) {
1677 /* load/update Media Initialization Section, if any */
1678 66 ret = update_init_section(v, seg);
1679
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 66 if (ret)
1680 ✗ return ret;
1681
1682
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 66 if (c->http_multiple == 1 && v->input_next_requested) {
1683 ✗ FFSWAP(AVIOContext *, v->input, v->input_next);
1684 ✗ v->cur_seg_offset = 0;
1685 ✗ v->input_next_requested = 0;
1686 ✗ ret = 0;
1687 } else {
1688 66 ret = open_input(c, v, seg, &v->input);
1689 }
1690
1/2
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✓ Branch 1 taken 66 times.
 66 if (ret < 0) {
1691 ✗ if (ff_check_interrupt(c->interrupt_callback))
1692 ✗ return AVERROR_EXIT;
1693 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1694 v->cur_seq_no,
1695 v->index);
1696 ✗ if (segment_retries >= c->seg_max_retry) {
1697 ✗ av_log(v->parent, AV_LOG_WARNING, "Segment %"PRId64" of playlist %d failed too many times, skipping\n",
1698 v->cur_seq_no,
1699 v->index);
1700 ✗ v->cur_seq_no++;
1701 ✗ segment_retries = 0;
1702 } else {
1703 ✗ segment_retries++;
1704 }
1705 ✗ goto restart;
1706 }
1707 66 segment_retries = 0;
1708 66 just_opened = 1;
1709 }
1710
1711
1/2
✓ Branch 0 taken 383 times.
✗ Branch 1 not taken.
 383 if (c->http_multiple == -1) {
1712 383 uint8_t *http_version_opt = NULL;
1713 383 int r = av_opt_get(v->input, "http_version", AV_OPT_SEARCH_CHILDREN, &http_version_opt);
1714
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 383 times.
 383 if (r >= 0) {
1715 ✗ c->http_multiple = (!strncmp((const char *)http_version_opt, "1.1", 3) || !strncmp((const char *)http_version_opt, "2.0", 3));
1716 ✗ av_freep(&http_version_opt);
1717 }
1718 }
1719
1720 383 seg = next_segment(v);
1721
1/6
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 383 if (c->http_multiple == 1 && !v->input_next_requested &&
1722 ✗ seg && seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1723 ✗ ret = open_input(c, v, seg, &v->input_next);
1724 ✗ if (ret < 0) {
1725 ✗ if (ff_check_interrupt(c->interrupt_callback))
1726 ✗ return AVERROR_EXIT;
1727 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1728 ✗ v->cur_seq_no + 1,
1729 v->index);
1730 } else {
1731 ✗ v->input_next_requested = 1;
1732 }
1733 }
1734
1735
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 382 times.
 383 if (v->init_sec_buf_read_offset < v->init_sec_data_len) {
1736 /* Push init section out first before first actual segment */
1737 1 int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
1738 1 memcpy(buf, v->init_sec_buf, copy_size);
1739 1 v->init_sec_buf_read_offset += copy_size;
1740 1 return copy_size;
1741 }
1742
1743 382 seg = current_segment(v);
1744 382 ret = read_from_url(v, seg, buf, buf_size);
1745
2/2
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 382 if (ret > 0) {
1746
4/4
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✓ Branch 1 taken 255 times.
✓ Branch 2 taken 13 times.
✓ Branch 3 taken 52 times.
 320 if (just_opened && v->is_id3_timestamped != 0) {
1747 /* Intercept ID3 tags here, elementary audio streams are required
1748 * to convey timestamps using them in the beginning of each segment. */
1749 13 intercept_id3(v, buf, buf_size, &ret);
1750 }
1751
1752 320 return ret;
1753 }
1754
1/2
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✗ Branch 1 not taken.
 62 if (c->http_persistent &&
1755
2/4
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✓ Branch 4 taken 62 times.
 62 seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1756 ✗ v->input_read_done = 1;
1757 } else {
1758 62 ff_format_io_close(v->parent, &v->input);
1759 }
1760 62 v->cur_seq_no++;
1761
1762 62 c->cur_seq_no = v->cur_seq_no;
1763
1764 62 goto restart;
1765 }
1766
1767 ✗ static int read_data_subtitle_segment(void *opaque, uint8_t *buf, int buf_size)
1768 {
1769 ✗ struct playlist *v = opaque;
1770 ✗ HLSContext *c = v->parent->priv_data;
1771 int ret;
1772 struct segment *seg;
1773
1774 ✗ if (!v->needed || v->cur_seq_no - v->start_seq_no >= v->n_segments) {
1775 ✗ return AVERROR_EOF;
1776 } else {
1777 ✗ seg = current_segment(v);
1778 }
1779
1780 ✗ if (!v->input) {
1781 ✗ ret = open_input(c, v, seg, &v->input);
1782 ✗ if (ret < 0) {
1783 ✗ if (ff_check_interrupt(c->interrupt_callback))
1784 ✗ return AVERROR_EXIT;
1785 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment of playlist %d\n",
1786 v->index);
1787 ✗ return ret;
1788 }
1789 }
1790
1791 ✗ return read_from_url(v, seg, buf, buf_size);
1792 }
1793
1794 ✗ static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
1795 int flags, AVDictionary **opts)
1796 {
1797 ✗ av_log(s, AV_LOG_ERROR,
1798 "A HLS playlist item '%s' referred to an external file '%s'. "
1799 "Opening this file was forbidden for security reasons\n",
1800 s->url, url);
1801 ✗ return AVERROR(EPERM);
1802 }
1803
1804 ✗ static int init_subtitle_context(struct playlist *pls)
1805 {
1806 ✗ HLSContext *c = pls->parent->priv_data;
1807 const AVInputFormat *in_fmt;
1808 ✗ AVDictionary *opts = NULL;
1809 int ret;
1810
1811 ✗ if (!(pls->ctx = avformat_alloc_context()))
1812 ✗ return AVERROR(ENOMEM);
1813
1814 ✗ pls->read_buffer = av_malloc(INITIAL_BUFFER_SIZE);
1815 ✗ if (!pls->read_buffer) {
1816 ✗ avformat_free_context(pls->ctx);
1817 ✗ pls->ctx = NULL;
1818 ✗ return AVERROR(ENOMEM);
1819 }
1820
1821 ✗ ffio_init_context(&pls->pb, pls->read_buffer, INITIAL_BUFFER_SIZE, 0, pls,
1822 read_data_subtitle_segment, NULL, NULL);
1823 ✗ pls->pb.pub.seekable = 0;
1824 ✗ pls->ctx->pb = &pls->pb.pub;
1825 ✗ pls->ctx->io_open = nested_io_open;
1826
1827 ✗ ret = ff_copy_whiteblacklists(pls->ctx, pls->parent);
1828 ✗ if (ret < 0)
1829 ✗ return ret;
1830
1831 ✗ in_fmt = av_find_input_format("webvtt");
1832 ✗ av_dict_copy(&opts, c->seg_format_opts, 0);
1833 ✗ ret = avformat_open_input(&pls->ctx, current_segment(pls)->url, in_fmt, &opts);
1834 ✗ av_dict_free(&opts);
1835
1836 ✗ return ret;
1837 }
1838
1839 ✗ static int read_subtitle_packet(struct playlist *v, AVPacket *pkt)
1840 {
1841 ✗ HLSContext *c = v->parent->priv_data;
1842 int ret;
1843
1844 ✗ restart:
1845 ✗ ret = reload_playlist(v, c);
1846 ✗ if (ret < 0)
1847 ✗ return ret;
1848
1849 ✗ if (v->input && !v->ctx)
1850 ✗ ff_format_io_close(v->parent, &v->input);
1851
1852 ✗ if (!v->input && !v->ctx) {
1853 ✗ ret = init_subtitle_context(v);
1854 ✗ if (ret < 0)
1855 ✗ return ret;
1856 }
1857
1858 ✗ ret = av_read_frame(v->ctx, v->pkt);
1859 ✗ if (!ret) {
1860 ✗ return ret;
1861 }
1862 ✗ ff_format_io_close(v->parent, &v->input);
1863 ✗ v->cur_seq_no++;
1864 ✗ c->cur_seq_no = v->cur_seq_no;
1865
1866 ✗ avformat_close_input(&v->ctx);
1867
1868 ✗ goto restart;
1869 }
1870
1871 ✗ static void add_renditions_to_variant(HLSContext *c, struct variant *var,
1872 enum AVMediaType type, const char *group_id)
1873 {
1874 int i;
1875
1876 ✗ for (i = 0; i < c->n_renditions; i++) {
1877 ✗ struct rendition *rend = c->renditions[i];
1878
1879 ✗ if (rend->type == type && !strcmp(rend->group_id, group_id)) {
1880
1881 ✗ if (rend->playlist)
1882 /* rendition is an external playlist
1883 * => add the playlist to the variant */
1884 ✗ dynarray_add(&var->playlists, &var->n_playlists, rend->playlist);
1885 else
1886 /* rendition is part of the variant main Media Playlist
1887 * => add the rendition to the main Media Playlist */
1888 ✗ dynarray_add(&var->playlists[0]->renditions,
1889 &var->playlists[0]->n_renditions,
1890 rend);
1891 }
1892 }
1893 ✗ }
1894
1895 42 static void add_metadata_from_renditions(AVFormatContext *s, struct playlist *pls,
1896 enum AVMediaType type)
1897 {
1898 42 int rend_idx = 0;
1899 int i;
1900
1901
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 70 for (i = 0; i < pls->n_main_streams; i++) {
1902 42 AVStream *st = pls->main_streams[i];
1903
1904
2/2
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 42 if (st->codecpar->codec_type != type)
1905 28 continue;
1906
1907
1/2
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 14 for (; rend_idx < pls->n_renditions; rend_idx++) {
1908 ✗ struct rendition *rend = pls->renditions[rend_idx];
1909
1910 ✗ if (rend->type != type)
1911 ✗ continue;
1912
1913 ✗ if (rend->language[0])
1914 ✗ av_dict_set(&st->metadata, "language", rend->language, 0);
1915 ✗ if (rend->name[0])
1916 ✗ av_dict_set(&st->metadata, "comment", rend->name, 0);
1917
1918 ✗ st->disposition |= rend->disposition;
1919 }
1920
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 14 if (rend_idx >=pls->n_renditions)
1921 14 break;
1922 }
1923 42 }
1924
1925 /* if timestamp was in valid range: returns 1 and sets seq_no
1926 * if not: returns 0 and sets seq_no to closest segment */
1927 1 static int find_timestamp_in_playlist(HLSContext *c, struct playlist *pls,
1928 int64_t timestamp, int64_t *seq_no,
1929 int64_t *seg_start_ts)
1930 {
1931 int i;
1932 2 int64_t pos = c->first_timestamp == AV_NOPTS_VALUE ?
1933
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✗ Branch 1 not taken.
 1 0 : c->first_timestamp;
1934
1935
1/2
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✓ Branch 1 taken 1 times.
 1 if (timestamp < pos) {
1936 ✗ *seq_no = pls->start_seq_no;
1937 ✗ return 0;
1938 }
1939
1940
1/2
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 1 for (i = 0; i < pls->n_segments; i++) {
1941 1 int64_t diff = pos + pls->segments[i]->duration - timestamp;
1942
1/2
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 1 if (diff > 0) {
1943 1 *seq_no = pls->start_seq_no + i;
1944
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 1 if (seg_start_ts) {
1945 1 *seg_start_ts = pos;
1946 }
1947 1 return 1;
1948 }
1949 ✗ pos += pls->segments[i]->duration;
1950 }
1951
1952 ✗ *seq_no = pls->start_seq_no + pls->n_segments - 1;
1953
1954 ✗ return 0;
1955 }
1956
1957 14 static int64_t select_cur_seq_no(HLSContext *c, struct playlist *pls)
1958 {
1959 int64_t seq_no;
1960
1961
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 14 if (!pls->finished && !c->first_packet &&
1962 ✗ av_gettime_relative() - pls->last_load_time >= default_reload_interval(pls))
1963 /* reload the playlist since it was suspended */
1964 ✗ parse_playlist(c, pls->url, pls, NULL);
1965
1966 /* If playback is already in progress (we are just selecting a new
1967 * playlist) and this is a complete file, find the matching segment
1968 * by counting durations. */
1969
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 14 if (pls->finished && c->cur_timestamp != AV_NOPTS_VALUE) {
1970 ✗ find_timestamp_in_playlist(c, pls, c->cur_timestamp, &seq_no, NULL);
1971 ✗ return seq_no;
1972 }
1973
1974
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 14 if (!pls->finished) {
1975
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 2 if (!c->first_packet && /* we are doing a segment selection during playback */
1976 ✗ c->cur_seq_no >= pls->start_seq_no &&
1977 ✗ c->cur_seq_no < pls->start_seq_no + pls->n_segments)
1978 /* While spec 3.4.3 says that we cannot assume anything about the
1979 * content at the same sequence number on different playlists,
1980 * in practice this seems to work and doing it otherwise would
1981 * require us to download a segment to inspect its timestamps. */
1982 ✗ return c->cur_seq_no;
1983
1984 /* If this is a live stream, start live_start_index segments from the
1985 * start or end */
1986
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 2 if (c->live_start_index < 0)
1987 2 seq_no = pls->start_seq_no + FFMAX(pls->n_segments +
1988 c->live_start_index, 0);
1989 else
1990 ✗ seq_no = pls->start_seq_no + FFMIN(c->live_start_index,
1991 pls->n_segments - 1);
1992
1993 /* If #EXT-X-START in playlist, need to recalculate */
1994
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 2 if (pls->time_offset_flag && c->prefer_x_start) {
1995 int64_t start_timestamp;
1996 ✗ int64_t playlist_duration = 0;
1997 ✗ int64_t cur_timestamp = c->cur_timestamp == AV_NOPTS_VALUE ? 0 :
1998 c->cur_timestamp;
1999
2000 ✗ for (int i = 0; i < pls->n_segments; i++)
2001 ✗ playlist_duration += pls->segments[i]->duration;
2002
2003 /* If the absolute value of TIME-OFFSET exceeds
2004 * the duration of the playlist, it indicates either the end of the
2005 * playlist (if positive) or the beginning of the playlist (if
2006 * negative). */
2007 ✗ if (pls->start_time_offset >=0 &&
2008 ✗ pls->start_time_offset > playlist_duration)
2009 ✗ start_timestamp = cur_timestamp + playlist_duration;
2010 ✗ else if (pls->start_time_offset >= 0 &&
2011 ✗ pls->start_time_offset <= playlist_duration)
2012 ✗ start_timestamp = cur_timestamp + pls->start_time_offset;
2013 ✗ else if (pls->start_time_offset < 0 &&
2014 ✗ pls->start_time_offset < -playlist_duration)
2015 ✗ start_timestamp = cur_timestamp;
2016 ✗ else if (pls->start_time_offset < 0 &&
2017 ✗ pls->start_time_offset > -playlist_duration)
2018 ✗ start_timestamp = cur_timestamp + playlist_duration +
2019 ✗ pls->start_time_offset;
2020 else
2021 ✗ start_timestamp = cur_timestamp;
2022
2023 ✗ find_timestamp_in_playlist(c, pls, start_timestamp, &seq_no, NULL);
2024 }
2025 2 return seq_no;
2026 }
2027
2028 /* Otherwise just start on the first segment. */
2029 12 return pls->start_seq_no;
2030 }
2031
2032 14 static void add_stream_to_programs(AVFormatContext *s, struct playlist *pls, AVStream *stream)
2033 {
2034 14 HLSContext *c = s->priv_data;
2035 int i, j;
2036 14 int bandwidth = -1;
2037
2038
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 28 for (i = 0; i < c->n_variants; i++) {
2039 14 struct variant *v = c->variants[i];
2040
2041
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 28 for (j = 0; j < v->n_playlists; j++) {
2042
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 14 if (v->playlists[j] != pls)
2043 ✗ continue;
2044
2045 14 av_program_add_stream_index(s, i, stream->index);
2046
2047
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 14 if (bandwidth < 0)
2048 14 bandwidth = v->bandwidth;
2049 ✗ else if (bandwidth != v->bandwidth)
2050 ✗ bandwidth = -1; /* stream in multiple variants with different bandwidths */
2051 }
2052 }
2053
2054
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 14 if (bandwidth >= 0)
2055 14 av_dict_set_int(&stream->metadata, "variant_bitrate", bandwidth, 0);
2056 14 }
2057
2058 25 static int set_stream_info_from_input_stream(AVStream *st, struct playlist *pls, AVStream *ist)
2059 {
2060 int err;
2061
2062 25 err = avcodec_parameters_copy(st->codecpar, ist->codecpar);
2063
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 25 if (err < 0)
2064 ✗ return err;
2065
2066
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 25 if (pls->is_id3_timestamped) /* custom timestamps via id3 */
2067 ✗ avpriv_set_pts_info(st, 33, 1, MPEG_TIME_BASE);
2068 else
2069 25 avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
2070
2071 // copy disposition
2072 25 st->disposition = ist->disposition;
2073
2074 25 av_dict_copy(&st->metadata, ist->metadata, 0);
2075
2076 25 ffstream(st)->need_context_update = 1;
2077
2078 25 return 0;
2079 }
2080
2081 /* add new subdemuxer streams to our context, if any */
2082 6539 static int update_streams_from_subdemuxer(AVFormatContext *s, struct playlist *pls)
2083 {
2084 int err;
2085
2086
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 6553 while (pls->n_main_streams < pls->ctx->nb_streams) {
2087 14 int ist_idx = pls->n_main_streams;
2088 14 AVStream *st = avformat_new_stream(s, NULL);
2089 14 AVStream *ist = pls->ctx->streams[ist_idx];
2090
2091
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 14 if (!st)
2092 ✗ return AVERROR(ENOMEM);
2093
2094 14 st->id = pls->index;
2095 14 dynarray_add(&pls->main_streams, &pls->n_main_streams, st);
2096
2097 14 add_stream_to_programs(s, pls, st);
2098
2099 14 err = set_stream_info_from_input_stream(st, pls, ist);
2100
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 14 if (err < 0)
2101 ✗ return err;
2102 }
2103
2104 6539 return 0;
2105 }
2106
2107 26 static void update_noheader_flag(AVFormatContext *s)
2108 {
2109 26 HLSContext *c = s->priv_data;
2110 26 int flag_needed = 0;
2111 int i;
2112
2113
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 40 for (i = 0; i < c->n_playlists; i++) {
2114 26 struct playlist *pls = c->playlists[i];
2115
2116
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 26 if (pls->has_noheader_flag) {
2117 12 flag_needed = 1;
2118 12 break;
2119 }
2120 }
2121
2122
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 26 if (flag_needed)
2123 12 s->ctx_flags |= AVFMTCTX_NOHEADER;
2124 else
2125 14 s->ctx_flags &= ~AVFMTCTX_NOHEADER;
2126 26 }
2127
2128 14 static int hls_close(AVFormatContext *s)
2129 {
2130 14 HLSContext *c = s->priv_data;
2131
2132 14 free_playlist_list(c);
2133 14 free_variant_list(c);
2134 14 free_rendition_list(c);
2135
2136
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 14 if (c->crypto_ctx.aes_ctx)
2137 ✗ av_free(c->crypto_ctx.aes_ctx);
2138
2139 14 av_dict_free(&c->avio_opts);
2140 14 ff_format_io_close(c->ctx, &c->playlist_pb);
2141
2142 14 return 0;
2143 }
2144
2145 14 static int hls_read_header(AVFormatContext *s)
2146 {
2147 14 HLSContext *c = s->priv_data;
2148 14 int ret = 0, i;
2149 14 int64_t highest_cur_seq_no = 0;
2150
2151 14 c->ctx = s;
2152 14 c->interrupt_callback = &s->interrupt_callback;
2153
2154 14 c->first_packet = 1;
2155 14 c->first_timestamp = AV_NOPTS_VALUE;
2156 14 c->cur_timestamp = AV_NOPTS_VALUE;
2157
2158
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 14 if ((ret = ffio_copy_url_options(s->pb, &c->avio_opts)) < 0)
2159 ✗ return ret;
2160
2161 /* XXX: Some HLS servers don't like being sent the range header,
2162 in this case, we need to set http_seekable = 0 to disable
2163 the range header */
2164 14 av_dict_set_int(&c->avio_opts, "seekable", c->http_seekable, 0);
2165
2166
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 14 if ((ret = parse_playlist(c, s->url, NULL, s->pb)) < 0)
2167 ✗ return ret;
2168
2169
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 14 if (c->n_variants == 0) {
2170 ✗ av_log(s, AV_LOG_WARNING, "Empty playlist\n");
2171 ✗ return AVERROR_EOF;
2172 }
2173 /* If the playlist only contained playlists (Master Playlist),
2174 * parse each individual playlist. */
2175
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 14 if (c->n_playlists > 1 || c->playlists[0]->n_segments == 0) {
2176 ✗ for (i = 0; i < c->n_playlists; i++) {
2177 ✗ struct playlist *pls = c->playlists[i];
2178 ✗ pls->m3u8_hold_counters = 0;
2179 ✗ if ((ret = parse_playlist(c, pls->url, pls, NULL)) < 0) {
2180 ✗ av_log(s, AV_LOG_WARNING, "parse_playlist error %s [%s]\n", av_err2str(ret), pls->url);
2181 ✗ pls->broken = 1;
2182 ✗ if (c->n_playlists > 1)
2183 ✗ continue;
2184 ✗ return ret;
2185 }
2186 }
2187 }
2188
2189
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 28 for (i = 0; i < c->n_variants; i++) {
2190
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 14 if (c->variants[i]->playlists[0]->n_segments == 0) {
2191 ✗ av_log(s, AV_LOG_WARNING, "Empty segment [%s]\n", c->variants[i]->playlists[0]->url);
2192 ✗ c->variants[i]->playlists[0]->broken = 1;
2193 }
2194 }
2195
2196 /* Calculate the total duration of the stream if all segments are
2197 * available (finished or EVENT playlists). */
2198
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 14 if (c->variants[0]->playlists[0]->finished ||
2199
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 2 c->variants[0]->playlists[0]->type == PLS_TYPE_EVENT) {
2200 13 int64_t duration = 0;
2201
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 81 for (i = 0; i < c->variants[0]->playlists[0]->n_segments; i++)
2202 68 duration += c->variants[0]->playlists[0]->segments[i]->duration;
2203 13 s->duration = duration;
2204 }
2205
2206 /* Associate renditions with variants */
2207
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 28 for (i = 0; i < c->n_variants; i++) {
2208 14 struct variant *var = c->variants[i];
2209
2210
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 14 if (var->audio_group[0])
2211 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_AUDIO, var->audio_group);
2212
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 14 if (var->video_group[0])
2213 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_VIDEO, var->video_group);
2214
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 14 if (var->subtitles_group[0])
2215 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_SUBTITLE, var->subtitles_group);
2216 }
2217
2218 /* Create a program for each variant */
2219
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 28 for (i = 0; i < c->n_variants; i++) {
2220 14 struct variant *v = c->variants[i];
2221 AVProgram *program;
2222
2223 14 program = av_new_program(s, i);
2224
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 14 if (!program)
2225 ✗ return AVERROR(ENOMEM);
2226 14 av_dict_set_int(&program->metadata, "variant_bitrate", v->bandwidth, 0);
2227 }
2228
2229 /* Select the starting segments */
2230
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 28 for (i = 0; i < c->n_playlists; i++) {
2231 14 struct playlist *pls = c->playlists[i];
2232
2233
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 14 if (pls->n_segments == 0)
2234 ✗ continue;
2235
2236 14 pls->cur_seq_no = select_cur_seq_no(c, pls);
2237 14 highest_cur_seq_no = FFMAX(highest_cur_seq_no, pls->cur_seq_no);
2238 }
2239
2240 14 av_dict_set(&c->seg_format_opts, "prefer_hls_mpegts_pts", "1", 0);
2241
2242 /* Open the demuxer for each playlist */
2243
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 28 for (i = 0; i < c->n_playlists; i++) {
2244 14 struct playlist *pls = c->playlists[i];
2245 14 const AVInputFormat *in_fmt = NULL;
2246 char *url;
2247 14 AVDictionary *options = NULL;
2248 14 struct segment *seg = NULL;
2249
2250
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 14 if (!(pls->ctx = avformat_alloc_context()))
2251 ✗ return AVERROR(ENOMEM);
2252
2253
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 14 if (pls->n_segments == 0)
2254 ✗ continue;
2255
2256 14 pls->index = i;
2257 14 pls->needed = 1;
2258 14 pls->parent = s;
2259
2260 /*
2261 * If this is a live stream and this playlist looks like it is one segment
2262 * behind, try to sync it up so that every substream starts at the same
2263 * time position (so e.g. avformat_find_stream_info() will see packets from
2264 * all active streams within the first few seconds). This is not very generic,
2265 * though, as the sequence numbers are technically independent.
2266 */
2267
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 14 if (!pls->finished && pls->cur_seq_no == highest_cur_seq_no - 1 &&
2268 ✗ highest_cur_seq_no < pls->start_seq_no + pls->n_segments) {
2269 ✗ pls->cur_seq_no = highest_cur_seq_no;
2270 }
2271
2272 14 pls->read_buffer = av_malloc(INITIAL_BUFFER_SIZE);
2273
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 14 if (!pls->read_buffer){
2274 ✗ avformat_free_context(pls->ctx);
2275 ✗ pls->ctx = NULL;
2276 ✗ return AVERROR(ENOMEM);
2277 }
2278
2279
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 14 if (pls->is_subtitle)
2280 ✗ ffio_init_context(&pls->pb, (unsigned char*)av_strdup("WEBVTT\n"), (int)strlen("WEBVTT\n"), 0, pls,
2281 NULL, NULL, NULL);
2282 else
2283 14 ffio_init_context(&pls->pb, pls->read_buffer, INITIAL_BUFFER_SIZE, 0, pls,
2284 read_data_continuous, NULL, NULL);
2285
2286 /*
2287 * If encryption scheme is SAMPLE-AES, try to read ID3 tags of
2288 * external audio track that contains audio setup information
2289 */
2290 14 seg = current_segment(pls);
2291
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 14 if (seg && seg->key_type == KEY_SAMPLE_AES && pls->n_renditions > 0 &&
2292 ✗ pls->renditions[0]->type == AVMEDIA_TYPE_AUDIO) {
2293 uint8_t buf[HLS_MAX_ID3_TAGS_DATA_LEN];
2294 ✗ if ((ret = avio_read(&pls->pb.pub, buf, HLS_MAX_ID3_TAGS_DATA_LEN)) < 0) {
2295 /* Fail if error was not end of file */
2296 ✗ if (ret != AVERROR_EOF) {
2297 ✗ avformat_free_context(pls->ctx);
2298 ✗ pls->ctx = NULL;
2299 ✗ return ret;
2300 }
2301 }
2302 ✗ ret = 0;
2303 /* Reset reading */
2304 ✗ ff_format_io_close(pls->parent, &pls->input);
2305 ✗ pls->input = NULL;
2306 ✗ pls->input_read_done = 0;
2307 ✗ ff_format_io_close(pls->parent, &pls->input_next);
2308 ✗ pls->input_next = NULL;
2309 ✗ pls->input_next_requested = 0;
2310 ✗ pls->cur_seg_offset = 0;
2311 ✗ pls->cur_init_section = NULL;
2312 /* Reset EOF flag */
2313 ✗ pls->pb.pub.eof_reached = 0;
2314 /* Clear any buffered data */
2315 ✗ pls->pb.pub.buf_end = pls->pb.pub.buf_ptr = pls->pb.pub.buffer;
2316 /* Reset the position */
2317 ✗ pls->pb.pub.pos = 0;
2318 }
2319
2320 /*
2321 * If encryption scheme is SAMPLE-AES and audio setup information is present in external audio track,
2322 * use that information to find the media format, otherwise probe input data
2323 */
2324 14 seg = current_segment(pls);
2325
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 14 if (seg && seg->key_type == KEY_SAMPLE_AES && pls->is_id3_timestamped &&
2326 ✗ pls->audio_setup_info.codec_id != AV_CODEC_ID_NONE) {
2327 av_assert1(pls->audio_setup_info.codec_id == AV_CODEC_ID_AAC ||
2328 pls->audio_setup_info.codec_id == AV_CODEC_ID_AC3 ||
2329 pls->audio_setup_info.codec_id == AV_CODEC_ID_EAC3);
2330 // Keep this list in sync with ff_hls_senc_read_audio_setup_info()
2331 ✗ in_fmt = av_find_input_format(pls->audio_setup_info.codec_id == AV_CODEC_ID_AAC ? "aac" :
2332 ✗ pls->audio_setup_info.codec_id == AV_CODEC_ID_AC3 ? "ac3" : "eac3");
2333 } else {
2334
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 14 pls->ctx->probesize = s->probesize > 0 ? s->probesize : 1024 * 4;
2335
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 14 pls->ctx->max_analyze_duration = s->max_analyze_duration > 0 ? s->max_analyze_duration : 4 * AV_TIME_BASE;
2336 14 pls->ctx->interrupt_callback = s->interrupt_callback;
2337 14 url = av_strdup(pls->segments[0]->url);
2338 14 ret = av_probe_input_buffer(&pls->pb.pub, &in_fmt, url, NULL, 0, 0);
2339
2340
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 87 for (int n = 0; n < pls->n_segments; n++)
2341
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 73 if (ret >= 0)
2342 73 ret = test_segment(s, in_fmt, pls, pls->segments[n]);
2343
2344
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 14 if (ret < 0) {
2345 /* Free the ctx - it isn't initialized properly at this point,
2346 * so avformat_close_input shouldn't be called. If
2347 * avformat_open_input fails below, it frees and zeros the
2348 * context, so it doesn't need any special treatment like this. */
2349 ✗ av_log(s, AV_LOG_ERROR, "Error when loading first segment '%s'\n", url);
2350 ✗ avformat_free_context(pls->ctx);
2351 ✗ pls->ctx = NULL;
2352 ✗ av_free(url);
2353 ✗ return ret;
2354 }
2355 14 av_free(url);
2356 }
2357
2358 14 seg = current_segment(pls);
2359
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 14 if (seg && seg->key_type == KEY_SAMPLE_AES) {
2360 ✗ if (strstr(in_fmt->name, "mov")) {
2361 char key[33];
2362 ✗ ff_data_to_hex(key, pls->key, sizeof(pls->key), 0);
2363 ✗ av_dict_set(&options, "decryption_key", key, 0);
2364 ✗ } else if (!c->crypto_ctx.aes_ctx) {
2365 ✗ c->crypto_ctx.aes_ctx = av_aes_alloc();
2366 ✗ if (!c->crypto_ctx.aes_ctx) {
2367 ✗ avformat_free_context(pls->ctx);
2368 ✗ pls->ctx = NULL;
2369 ✗ return AVERROR(ENOMEM);
2370 }
2371 }
2372 }
2373
2374 14 pls->ctx->pb = &pls->pb.pub;
2375 14 pls->ctx->io_open = nested_io_open;
2376 14 pls->ctx->flags |= s->flags & ~AVFMT_FLAG_CUSTOM_IO;
2377
2378
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 14 if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
2379 ✗ return ret;
2380
2381 14 av_dict_copy(&options, c->seg_format_opts, 0);
2382
2383 14 ret = avformat_open_input(&pls->ctx, pls->segments[0]->url, in_fmt, &options);
2384 14 av_dict_free(&options);
2385
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 14 if (ret < 0)
2386 ✗ return ret;
2387
2388
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 14 if (pls->id3_deferred_extra && pls->ctx->nb_streams == 1) {
2389 ✗ ff_id3v2_parse_apic(pls->ctx, pls->id3_deferred_extra);
2390 ✗ avformat_queue_attached_pictures(pls->ctx);
2391 ✗ ff_id3v2_parse_priv(pls->ctx, pls->id3_deferred_extra);
2392 ✗ ff_id3v2_free_extra_meta(&pls->id3_deferred_extra);
2393 }
2394
2395
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 14 if (pls->is_id3_timestamped == -1)
2396 ✗ av_log(s, AV_LOG_WARNING, "No expected HTTP requests have been made\n");
2397
2398 /*
2399 * For ID3 timestamped raw audio streams we need to detect the packet
2400 * durations to calculate timestamps in fill_timing_for_id3_timestamped_stream(),
2401 * but for other streams we can rely on our user calling avformat_find_stream_info()
2402 * on us if they want to.
2403 */
2404
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 14 if (pls->is_id3_timestamped || (pls->n_renditions > 0 && pls->renditions[0]->type == AVMEDIA_TYPE_AUDIO)) {
2405 ✗ seg = current_segment(pls);
2406 ✗ if (seg && seg->key_type == KEY_SAMPLE_AES && pls->audio_setup_info.setup_data_length > 0 &&
2407 ✗ pls->ctx->nb_streams == 1)
2408 ✗ ret = ff_hls_senc_parse_audio_setup_info(pls->ctx->streams[0], &pls->audio_setup_info);
2409 else
2410 ✗ ret = avformat_find_stream_info(pls->ctx, NULL);
2411
2412 ✗ if (ret < 0)
2413 ✗ return ret;
2414 }
2415
2416 14 pls->has_noheader_flag = !!(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER);
2417
2418 /* Create new AVStreams for each stream in this playlist */
2419 14 ret = update_streams_from_subdemuxer(s, pls);
2420
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 14 if (ret < 0)
2421 ✗ return ret;
2422
2423 /*
2424 * Copy any metadata from playlist to main streams, but do not set
2425 * event flags.
2426 */
2427
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 14 if (pls->n_main_streams)
2428 14 av_dict_copy(&pls->main_streams[0]->metadata, pls->ctx->metadata, 0);
2429
2430
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 14 if (pls->is_subtitle) {
2431 ✗ avformat_free_context(pls->ctx);
2432 ✗ pls->ctx = NULL;
2433 ✗ pls->needed = 0;
2434 ✗ pls->main_streams[0]->discard = AVDISCARD_ALL;
2435 }
2436
2437 14 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_AUDIO);
2438 14 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_VIDEO);
2439 14 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_SUBTITLE);
2440 }
2441
2442 14 update_noheader_flag(s);
2443
2444 14 return 0;
2445 }
2446
2447 6536 static int recheck_discard_flags(AVFormatContext *s, int first)
2448 {
2449 6536 HLSContext *c = s->priv_data;
2450 6536 int i, changed = 0;
2451 int cur_needed;
2452
2453 /* Check if any new streams are needed */
2454
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 13072 for (i = 0; i < c->n_playlists; i++) {
2455 6536 struct playlist *pls = c->playlists[i];
2456
2457 6536 cur_needed = playlist_needed(c->playlists[i]);
2458
2459
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 6536 if (pls->broken) {
2460 ✗ continue;
2461 }
2462
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 6536 if (cur_needed && !pls->needed) {
2463 ✗ pls->needed = 1;
2464 ✗ changed = 1;
2465 ✗ pls->cur_seq_no = select_cur_seq_no(c, pls);
2466 ✗ pls->pb.pub.eof_reached = 0;
2467 ✗ if (c->cur_timestamp != AV_NOPTS_VALUE) {
2468 /* catch up */
2469 ✗ pls->seek_timestamp = c->cur_timestamp;
2470 ✗ pls->seek_flags = AVSEEK_FLAG_ANY;
2471 ✗ pls->seek_stream_index = -1;
2472 }
2473 ✗ av_log(s, AV_LOG_INFO, "Now receiving playlist %d, segment %"PRId64"\n", i, pls->cur_seq_no);
2474
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 6536 } else if (first && !cur_needed && pls->needed) {
2475 ✗ ff_format_io_close(pls->parent, &pls->input);
2476 ✗ pls->input_read_done = 0;
2477 ✗ ff_format_io_close(pls->parent, &pls->input_next);
2478 ✗ pls->input_next_requested = 0;
2479 ✗ if (pls->is_subtitle)
2480 ✗ avformat_close_input(&pls->ctx);
2481 ✗ pls->needed = 0;
2482 ✗ changed = 1;
2483 ✗ av_log(s, AV_LOG_INFO, "No longer receiving playlist %d\n", i);
2484 }
2485 }
2486 6536 return changed;
2487 }
2488
2489 ✗ static void fill_timing_for_id3_timestamped_stream(struct playlist *pls)
2490 {
2491 ✗ if (pls->id3_offset >= 0) {
2492 ✗ pls->pkt->dts = pls->id3_mpegts_timestamp +
2493 ✗ av_rescale_q(pls->id3_offset,
2494 ✗ pls->ctx->streams[pls->pkt->stream_index]->time_base,
2495 ✗ MPEG_TIME_BASE_Q);
2496 ✗ if (pls->pkt->duration)
2497 ✗ pls->id3_offset += pls->pkt->duration;
2498 else
2499 ✗ pls->id3_offset = -1;
2500 } else {
2501 /* there have been packets with unknown duration
2502 * since the last id3 tag, should not normally happen */
2503 ✗ pls->pkt->dts = AV_NOPTS_VALUE;
2504 }
2505
2506 ✗ if (pls->pkt->duration)
2507 ✗ pls->pkt->duration = av_rescale_q(pls->pkt->duration,
2508 ✗ pls->ctx->streams[pls->pkt->stream_index]->time_base,
2509 ✗ MPEG_TIME_BASE_Q);
2510
2511 ✗ pls->pkt->pts = AV_NOPTS_VALUE;
2512 ✗ }
2513
2514 130 static AVRational get_timebase(struct playlist *pls)
2515 {
2516
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 130 if (pls->is_id3_timestamped)
2517 ✗ return MPEG_TIME_BASE_Q;
2518
2519 130 return pls->ctx->streams[pls->pkt->stream_index]->time_base;
2520 }
2521
2522 ✗ static int compare_ts_with_wrapdetect(int64_t ts_a, struct playlist *pls_a,
2523 int64_t ts_b, struct playlist *pls_b)
2524 {
2525 ✗ int64_t scaled_ts_a = av_rescale_q(ts_a, get_timebase(pls_a), MPEG_TIME_BASE_Q);
2526 ✗ int64_t scaled_ts_b = av_rescale_q(ts_b, get_timebase(pls_b), MPEG_TIME_BASE_Q);
2527
2528 ✗ return av_compare_mod(scaled_ts_a, scaled_ts_b, 1LL << 33);
2529 }
2530
2531 6536 static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
2532 {
2533 6536 HLSContext *c = s->priv_data;
2534 6536 int ret, i, minplaylist = -1;
2535
2536 6536 recheck_discard_flags(s, c->first_packet);
2537 6536 c->first_packet = 0;
2538
2539
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 13072 for (i = 0; i < c->n_playlists; i++) {
2540 6536 struct playlist *pls = c->playlists[i];
2541 /* Make sure we've got one buffered packet from each open playlist
2542 * stream */
2543
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 6536 if (pls->needed && !pls->pkt->data) {
2544 115 while (1) {
2545 int64_t ts_diff;
2546 AVRational tb;
2547 6651 struct segment *seg = NULL;
2548
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 6651 if (pls->is_subtitle)
2549 ✗ ret = read_subtitle_packet(pls, pls->pkt);
2550 else
2551 6651 ret = av_read_frame(pls->ctx, pls->pkt);
2552
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 6651 if (ret < 0) {
2553
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 11 if (!avio_feof(&pls->pb.pub) && ret != AVERROR_EOF)
2554 ✗ return ret;
2555 6536 break;
2556 } else {
2557 /* stream_index check prevents matching picture attachments etc. */
2558
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 6640 if (pls->is_id3_timestamped && pls->pkt->stream_index == 0) {
2559 /* audio elementary streams are id3 timestamped */
2560 ✗ fill_timing_for_id3_timestamped_stream(pls);
2561 }
2562
2563
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 6640 if (c->first_timestamp == AV_NOPTS_VALUE &&
2564
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 14 pls->pkt->dts != AV_NOPTS_VALUE) {
2565 14 int64_t seg_idx = pls->cur_seq_no - pls->start_seq_no;
2566 28 c->first_timestamp = av_rescale_q(pls->pkt->dts,
2567 14 get_timebase(pls), AV_TIME_BASE_Q);
2568
2569 /* EVENT playlists preserve all segments from the start */
2570
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 14 if (pls->type == PLS_TYPE_EVENT) {
2571
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 5 for (int64_t k = 0; k < seg_idx && k < pls->n_segments; k++)
2572 4 c->first_timestamp -= pls->segments[k]->duration;
2573
2574
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 2 for (unsigned k = 0; k < s->nb_streams; k++) {
2575 1 AVStream *st = s->streams[k];
2576
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 1 if (st->start_time == AV_NOPTS_VALUE)
2577 1 st->start_time = av_rescale_q(c->first_timestamp,
2578 1 AV_TIME_BASE_Q, st->time_base);
2579 }
2580 }
2581 }
2582 }
2583
2584 6640 seg = current_segment(pls);
2585
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 6640 if (seg && seg->key_type == KEY_SAMPLE_AES && !strstr(pls->ctx->iformat->name, "mov")) {
2586 ✗ enum AVCodecID codec_id = pls->ctx->streams[pls->pkt->stream_index]->codecpar->codec_id;
2587 ✗ memcpy(c->crypto_ctx.iv, seg->iv, sizeof(seg->iv));
2588 ✗ memcpy(c->crypto_ctx.key, pls->key, sizeof(pls->key));
2589 ✗ ff_hls_senc_decrypt_frame(codec_id, &c->crypto_ctx, pls->pkt);
2590 }
2591
2592
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 6640 if (pls->seek_timestamp == AV_NOPTS_VALUE)
2593 6524 break;
2594
2595
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 116 if (pls->seek_stream_index < 0 ||
2596
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 116 pls->seek_stream_index == pls->pkt->stream_index) {
2597
2598
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 116 if (pls->pkt->dts == AV_NOPTS_VALUE) {
2599 ✗ pls->seek_timestamp = AV_NOPTS_VALUE;
2600 ✗ break;
2601 }
2602
2603 116 tb = get_timebase(pls);
2604 116 ts_diff = av_rescale_rnd(pls->pkt->dts, AV_TIME_BASE,
2605 116 tb.den, AV_ROUND_DOWN) -
2606 116 pls->seek_timestamp;
2607
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 116 if (ts_diff >= 0 && (pls->seek_flags & AVSEEK_FLAG_ANY ||
2608
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 1 pls->pkt->flags & AV_PKT_FLAG_KEY)) {
2609 1 pls->seek_timestamp = AV_NOPTS_VALUE;
2610 1 break;
2611 }
2612 }
2613 115 av_packet_unref(pls->pkt);
2614 }
2615 }
2616 /* Check if this stream has the packet with the lowest dts */
2617
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 6536 if (pls->pkt->data) {
2618 6525 struct playlist *minpls = minplaylist < 0 ?
2619
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 6525 NULL : c->playlists[minplaylist];
2620
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 6525 if (minplaylist < 0) {
2621 6525 minplaylist = i;
2622 } else {
2623 ✗ int64_t dts = pls->pkt->dts;
2624 ✗ int64_t mindts = minpls->pkt->dts;
2625
2626 ✗ if (dts == AV_NOPTS_VALUE ||
2627 ✗ (mindts != AV_NOPTS_VALUE && compare_ts_with_wrapdetect(dts, pls, mindts, minpls) < 0))
2628 ✗ minplaylist = i;
2629 }
2630 }
2631 }
2632
2633 /* If we got a packet, return it */
2634
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 6536 if (minplaylist >= 0) {
2635 6525 struct playlist *pls = c->playlists[minplaylist];
2636 AVStream *ist;
2637 AVStream *st;
2638
2639 6525 ret = update_streams_from_subdemuxer(s, pls);
2640
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 6525 if (ret < 0) {
2641 ✗ av_packet_unref(pls->pkt);
2642 ✗ return ret;
2643 }
2644
2645 // If sub-demuxer reports updated metadata, copy it to the first stream
2646 // and set its AVSTREAM_EVENT_FLAG_METADATA_UPDATED flag.
2647
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 6525 if (pls->ctx->event_flags & AVFMT_EVENT_FLAG_METADATA_UPDATED) {
2648
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 1 if (pls->n_main_streams) {
2649 1 st = pls->main_streams[0];
2650 1 av_dict_copy(&st->metadata, pls->ctx->metadata, 0);
2651 1 st->event_flags |= AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
2652 }
2653 1 pls->ctx->event_flags &= ~AVFMT_EVENT_FLAG_METADATA_UPDATED;
2654 }
2655
2656 /* check if noheader flag has been cleared by the subdemuxer */
2657
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 6525 if (pls->has_noheader_flag && !(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER)) {
2658 12 pls->has_noheader_flag = 0;
2659 12 update_noheader_flag(s);
2660 }
2661
2662
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 6525 if (pls->pkt->stream_index >= pls->n_main_streams) {
2663 ✗ av_log(s, AV_LOG_ERROR, "stream index inconsistency: index %d, %d main streams, %d subdemuxer streams\n",
2664 ✗ pls->pkt->stream_index, pls->n_main_streams, pls->ctx->nb_streams);
2665 ✗ av_packet_unref(pls->pkt);
2666 ✗ return AVERROR_BUG;
2667 }
2668
2669 6525 ist = pls->ctx->streams[pls->pkt->stream_index];
2670 6525 st = pls->main_streams[pls->pkt->stream_index];
2671
2672 6525 av_packet_move_ref(pkt, pls->pkt);
2673 6525 pkt->stream_index = st->index;
2674
2675
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 6525 if (pkt->dts != AV_NOPTS_VALUE)
2676 6525 c->cur_timestamp = av_rescale_q(pkt->dts,
2677 ist->time_base,
2678 6525 AV_TIME_BASE_Q);
2679
2680 /* There may be more situations where this would be useful, but this at least
2681 * handles newly probed codecs properly (i.e. request_probe by mpegts). */
2682
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 6525 if (ist->codecpar->codec_id != st->codecpar->codec_id) {
2683 11 ret = set_stream_info_from_input_stream(st, pls, ist);
2684
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 11 if (ret < 0) {
2685 ✗ return ret;
2686 }
2687 }
2688
2689 6525 return 0;
2690 }
2691 11 return AVERROR_EOF;
2692 }
2693
2694 1 static int hls_read_seek(AVFormatContext *s, int stream_index,
2695 int64_t timestamp, int flags)
2696 {
2697 1 HLSContext *c = s->priv_data;
2698 1 struct playlist *seek_pls = NULL;
2699 int i, j;
2700 int stream_subdemuxer_index;
2701 int64_t first_timestamp, seek_timestamp, duration;
2702 int64_t seq_no, seg_start_ts;
2703
2704
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 1 if ((flags & AVSEEK_FLAG_BYTE) || (c->ctx->ctx_flags & AVFMTCTX_UNSEEKABLE))
2705 ✗ return AVERROR(ENOSYS);
2706
2707 2 first_timestamp = c->first_timestamp == AV_NOPTS_VALUE ?
2708
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 1 0 : c->first_timestamp;
2709
2710 1 seek_timestamp = av_rescale_rnd(timestamp, AV_TIME_BASE,
2711 1 s->streams[stream_index]->time_base.den,
2712 AV_ROUND_DOWN);
2713
2714 2 duration = s->duration == AV_NOPTS_VALUE ?
2715
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 1 0 : s->duration;
2716
2717
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 1 if (0 < duration && duration < seek_timestamp - first_timestamp)
2718 ✗ return AVERROR(EIO);
2719
2720 /* find the playlist with the specified stream */
2721
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 2 for (i = 0; i < c->n_playlists; i++) {
2722 1 struct playlist *pls = c->playlists[i];
2723
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 1 for (j = 0; j < pls->n_main_streams; j++) {
2724
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 1 if (pls->main_streams[j] == s->streams[stream_index]) {
2725 1 seek_pls = pls;
2726 1 stream_subdemuxer_index = j;
2727 1 break;
2728 }
2729 }
2730 }
2731 /* check if the timestamp is valid for the playlist with the
2732 * specified stream index */
2733
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 1 if (!seek_pls || !find_timestamp_in_playlist(c, seek_pls, seek_timestamp, &seq_no, &seg_start_ts))
2734 ✗ return AVERROR(EIO);
2735
2736
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 1 if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2737 ✗ flags & AVSEEK_FLAG_BACKWARD && !(flags & AVSEEK_FLAG_ANY)) {
2738 /* Seeking to start of segment ensures we seek to a keyframe located
2739 * before the given timestamp. */
2740 ✗ seek_timestamp = seg_start_ts;
2741 }
2742
2743 /* set segment now so we do not need to search again below */
2744 1 seek_pls->cur_seq_no = seq_no;
2745 1 seek_pls->seek_stream_index = stream_subdemuxer_index;
2746
2747 /* Reset PTS wrap detection so backward seeks don't get misinterpreted
2748 * as a forward PTS wrap. */
2749
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 2 for (i = 0; i < (int)s->nb_streams; i++)
2750 1 ffstream(s->streams[i])->pts_wrap_reference = AV_NOPTS_VALUE;
2751
2752
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 2 for (i = 0; i < c->n_playlists; i++) {
2753 /* Reset reading */
2754 1 struct playlist *pls = c->playlists[i];
2755 1 AVIOContext *const pb = &pls->pb.pub;
2756 1 ff_format_io_close(pls->parent, &pls->input);
2757 1 pls->input_read_done = 0;
2758 1 ff_format_io_close(pls->parent, &pls->input_next);
2759 1 pls->input_next_requested = 0;
2760 1 av_packet_unref(pls->pkt);
2761 1 pb->eof_reached = 0;
2762 /* Clear any buffered data */
2763 1 pb->buf_end = pb->buf_ptr = pb->buffer;
2764 /* Reset the pos, to let the mpegts/mov demuxer know we've seeked. */
2765 1 pb->pos = 0;
2766 /* Flush the packet queue of the subdemuxer. */
2767
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 1 if (pls->ctx) {
2768 1 ff_read_frame_flush(pls->ctx);
2769
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 2 for (j = 0; j < (int)pls->ctx->nb_streams; j++)
2770 1 ffstream(pls->ctx->streams[j])->pts_wrap_reference = AV_NOPTS_VALUE;
2771 }
2772
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 1 if (pls->is_subtitle)
2773 ✗ avformat_close_input(&pls->ctx);
2774
2775 /* Reset the init segment so it's re-fetched and served appropriately */
2776 1 pls->cur_init_section = NULL;
2777
2778 1 pls->seek_timestamp = seek_timestamp;
2779 1 pls->seek_flags = flags;
2780
2781
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 1 if (pls != seek_pls) {
2782 /* set closest segment seq_no for playlists not handled above */
2783 ✗ find_timestamp_in_playlist(c, pls, seek_timestamp, &pls->cur_seq_no, NULL);
2784 /* seek the playlist to the given position without taking
2785 * keyframes into account since this playlist does not have the
2786 * specified stream where we should look for the keyframes */
2787 ✗ pls->seek_stream_index = -1;
2788 ✗ pls->seek_flags |= AVSEEK_FLAG_ANY;
2789 }
2790
2791 1 pls->last_seq_no = pls->cur_seq_no;
2792 }
2793
2794 1 c->cur_timestamp = seek_timestamp;
2795
2796 1 return 0;
2797 }
2798
2799 7474 static int hls_probe(const AVProbeData *p)
2800 {
2801 /* Require #EXTM3U at the start, and either one of the ones below
2802 * somewhere for a proper match. */
2803
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 7474 if (strncmp(p->buf, "#EXTM3U", 7))
2804 7460 return 0;
2805
2806
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 14 if (strstr(p->buf, "#EXT-X-STREAM-INF:") ||
2807
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 14 strstr(p->buf, "#EXT-X-TARGETDURATION:") ||
2808 ✗ strstr(p->buf, "#EXT-X-MEDIA-SEQUENCE:")) {
2809
2810
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 14 int mime_ok = p->mime_type && !(
2811 ✗ av_strcasecmp(p->mime_type, "application/vnd.apple.mpegurl") &&
2812 ✗ av_strcasecmp(p->mime_type, "audio/mpegurl")
2813 );
2814
2815
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 14 int mime_x = p->mime_type && !(
2816 ✗ av_strcasecmp(p->mime_type, "audio/x-mpegurl") &&
2817 ✗ av_strcasecmp(p->mime_type, "application/x-mpegurl")
2818 );
2819
2820
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 14 if (!mime_ok &&
2821
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 14 !mime_x &&
2822
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 14 !av_match_ext (p->filename, "m3u8,m3u") &&
2823 ✗ ff_match_url_ext(p->filename, "m3u8,m3u") <= 0) {
2824 ✗ av_log(NULL, AV_LOG_ERROR, "Not detecting m3u8/hls with non standard extension and non standard mime type\n");
2825 ✗ return 0;
2826 }
2827
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 14 if (mime_x)
2828 ✗ av_log(NULL, AV_LOG_WARNING, "mime type is not rfc8216 compliant\n");
2829
2830 14 return AVPROBE_SCORE_MAX;
2831 }
2832 ✗ return 0;
2833 }
2834
2835 #define OFFSET(x) offsetof(HLSContext, x)
2836 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2837 static const AVOption hls_options[] = {
2838 {"live_start_index", "segment index to start live streams at (negative values are from the end)",
2839 OFFSET(live_start_index), AV_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS},
2840 {"prefer_x_start", "prefer to use #EXT-X-START if it's in playlist instead of live_start_index",
2841 OFFSET(prefer_x_start), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS},
2842 {"allowed_extensions", "List of file extensions that hls is allowed to access",
2843 OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
2844 {.str = "3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,vtt,wav,webvtt"
2845 ",cmfv,cmfa" // Ticket11526 www.nicovideo.jp
2846 ",ec3" // part of Ticket11435 (Elisa Viihde (Finnish online recording service))
2847 ",fmp4" // https://github.com/yt-dlp/yt-dlp/issues/12700
2848 },
2849 INT_MIN, INT_MAX, FLAGS},
2850 {"allowed_segment_extensions", "List of file extensions that hls is allowed to access",
2851 OFFSET(allowed_segment_extensions), AV_OPT_TYPE_STRING,
2852 {.str = "3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,vtt,wav,webvtt"
2853 ",cmfv,cmfa" // Ticket11526 www.nicovideo.jp
2854 ",ec3" // part of Ticket11435 (Elisa Viihde (Finnish online recording service))
2855 ",fmp4" // https://github.com/yt-dlp/yt-dlp/issues/12700
2856 ",html" // https://flash1.bogulus.cfd/
2857 },
2858 INT_MIN, INT_MAX, FLAGS},
2859 {"extension_picky", "Be picky with all extensions matching",
2860 OFFSET(extension_picky), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS},
2861 {"max_reload", "Maximum number of times a insufficient list is attempted to be reloaded",
2862 OFFSET(max_reload), AV_OPT_TYPE_INT, {.i64 = 100}, 0, INT_MAX, FLAGS},
2863 {"m3u8_hold_counters", "The maximum number of times to load m3u8 when it refreshes without new segments",
2864 OFFSET(m3u8_hold_counters), AV_OPT_TYPE_INT, {.i64 = 1000}, 0, INT_MAX, FLAGS},
2865 {"http_persistent", "Use persistent HTTP connections",
2866 OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
2867 {"http_multiple", "Use multiple HTTP connections for fetching segments",
2868 OFFSET(http_multiple), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, FLAGS},
2869 {"http_seekable", "Use HTTP partial requests, 0 = disable, 1 = enable, -1 = auto",
2870 OFFSET(http_seekable), AV_OPT_TYPE_BOOL, { .i64 = -1}, -1, 1, FLAGS},
2871 {"seg_format_options", "Set options for segment demuxer",
2872 OFFSET(seg_format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
2873 {"seg_max_retry", "Maximum number of times to reload a segment on error.",
2874 OFFSET(seg_max_retry), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS},
2875 {NULL}
2876 };
2877
2878 static const AVClass hls_class = {
2879 .class_name = "hls demuxer",
2880 .item_name = av_default_item_name,
2881 .option = hls_options,
2882 .version = LIBAVUTIL_VERSION_INT,
2883 };
2884
2885 const FFInputFormat ff_hls_demuxer = {
2886 .p.name = "hls",
2887 .p.long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2888 .p.priv_class = &hls_class,
2889 .p.flags = AVFMT_NOGENSEARCH | AVFMT_TS_DISCONT | AVFMT_NO_BYTE_SEEK | AVFMT_SHOW_IDS,
2890 .priv_data_size = sizeof(HLSContext),
2891 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
2892 .read_probe = hls_probe,
2893 .read_header = hls_read_header,
2894 .read_packet = hls_read_packet,
2895 .read_close = hls_close,
2896 .read_seek = hls_read_seek,
2897 };
2898