FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/hls.c
Date: 2025-05-24 21:13:50
Exec Total Coverage
Lines: 604 1502 40.2%
Functions: 34 54 63.0%
Branches: 327 1072 30.5%
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 12 static void free_segment_dynarray(struct segment **segments, int n_segments)
239 {
240 int i;
241
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 77 for (i = 0; i < n_segments; i++) {
242 65 av_freep(&segments[i]->key);
243 65 av_freep(&segments[i]->url);
244 65 av_freep(&segments[i]);
245 }
246 12 }
247
248 12 static void free_segment_list(struct playlist *pls)
249 {
250 12 free_segment_dynarray(pls->segments, pls->n_segments);
251 12 av_freep(&pls->segments);
252 12 pls->n_segments = 0;
253 12 }
254
255 12 static void free_init_section_list(struct playlist *pls)
256 {
257 int i;
258
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 12 for (i = 0; i < pls->n_init_sections; i++) {
259 ✗ av_freep(&pls->init_sections[i]->key);
260 ✗ av_freep(&pls->init_sections[i]->url);
261 ✗ av_freep(&pls->init_sections[i]);
262 }
263 12 av_freep(&pls->init_sections);
264 12 pls->n_init_sections = 0;
265 12 }
266
267 12 static void free_playlist_list(HLSContext *c)
268 {
269 int i;
270
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 24 for (i = 0; i < c->n_playlists; i++) {
271 12 struct playlist *pls = c->playlists[i];
272 12 free_segment_list(pls);
273 12 free_init_section_list(pls);
274 12 av_freep(&pls->main_streams);
275 12 av_freep(&pls->renditions);
276 12 av_freep(&pls->id3_buf);
277 12 av_dict_free(&pls->id3_initial);
278 12 ff_id3v2_free_extra_meta(&pls->id3_deferred_extra);
279 12 av_freep(&pls->init_sec_buf);
280 12 av_packet_free(&pls->pkt);
281 12 av_freep(&pls->pb.pub.buffer);
282 12 ff_format_io_close(c->ctx, &pls->input);
283 12 pls->input_read_done = 0;
284 12 ff_format_io_close(c->ctx, &pls->input_next);
285 12 pls->input_next_requested = 0;
286
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 12 if (pls->ctx) {
287 12 pls->ctx->pb = NULL;
288 12 avformat_close_input(&pls->ctx);
289 }
290 12 av_free(pls);
291 }
292 12 av_freep(&c->playlists);
293 12 c->n_playlists = 0;
294 12 }
295
296 12 static void free_variant_list(HLSContext *c)
297 {
298 int i;
299
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 24 for (i = 0; i < c->n_variants; i++) {
300 12 struct variant *var = c->variants[i];
301 12 av_freep(&var->playlists);
302 12 av_free(var);
303 }
304 12 av_freep(&c->variants);
305 12 c->n_variants = 0;
306 12 }
307
308 12 static void free_rendition_list(HLSContext *c)
309 {
310 int i;
311
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 12 for (i = 0; i < c->n_renditions; i++)
312 ✗ av_freep(&c->renditions[i]);
313 12 av_freep(&c->renditions);
314 12 c->n_renditions = 0;
315 12 }
316
317 12 static struct playlist *new_playlist(HLSContext *c, const char *url,
318 const char *base)
319 {
320 12 struct playlist *pls = av_mallocz(sizeof(struct playlist));
321
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 12 if (!pls)
322 ✗ return NULL;
323 12 pls->pkt = av_packet_alloc();
324
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 12 if (!pls->pkt) {
325 ✗ av_free(pls);
326 ✗ return NULL;
327 }
328 12 ff_make_absolute_url(pls->url, sizeof(pls->url), base, url);
329
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 12 if (!pls->url[0]) {
330 ✗ av_packet_free(&pls->pkt);
331 ✗ av_free(pls);
332 ✗ return NULL;
333 }
334 12 pls->seek_timestamp = AV_NOPTS_VALUE;
335
336 12 pls->is_id3_timestamped = -1;
337 12 pls->id3_mpegts_timestamp = AV_NOPTS_VALUE;
338
339 12 dynarray_add(&c->playlists, &c->n_playlists, pls);
340 12 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 12 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 12 pls = new_playlist(c, url, base);
358
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 12 if (!pls)
359 ✗ return NULL;
360
361 12 var = av_mallocz(sizeof(struct variant));
362
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 12 if (!var)
363 ✗ return NULL;
364
365
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 12 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 12 dynarray_add(&c->variants, &c->n_variants, var);
373 12 dynarray_add(&var->playlists, &var->n_playlists, pls);
374 12 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 ✗ 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 ✗ char tmp_str[MAX_URL_SIZE], *ptr = tmp_str;
427
428 ✗ if (!info->uri[0])
429 ✗ return NULL;
430
431 ✗ sec = av_mallocz(sizeof(*sec));
432 ✗ if (!sec)
433 ✗ return NULL;
434
435 ✗ if (!av_strncasecmp(info->uri, "data:", 5)) {
436 ✗ ptr = info->uri;
437 } else {
438 ✗ ff_make_absolute_url(tmp_str, sizeof(tmp_str), url_base, info->uri);
439 ✗ if (!tmp_str[0]) {
440 ✗ av_free(sec);
441 ✗ return NULL;
442 }
443 }
444 ✗ sec->url = av_strdup(ptr);
445 ✗ if (!sec->url) {
446 ✗ av_free(sec);
447 ✗ return NULL;
448 }
449
450 ✗ 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 ✗ sec->size = -1;
458 }
459
460 ✗ dynarray_add(&pls->init_sections, &pls->n_init_sections, sec);
461
462 ✗ return sec;
463 }
464
465 ✗ static void handle_init_section_args(struct init_section_info *info, const char *key,
466 int key_len, char **dest, int *dest_len)
467 {
468 ✗ if (!strncmp(key, "URI=", key_len)) {
469 ✗ *dest = info->uri;
470 ✗ *dest_len = sizeof(info->uri);
471 ✗ } else if (!strncmp(key, "BYTERANGE=", key_len)) {
472 ✗ *dest = info->byterange;
473 ✗ *dest_len = sizeof(info->byterange);
474 }
475 ✗ }
476
477 struct rendition_info {
478 char type[16];
479 char uri[MAX_URL_SIZE];
480 char group_id[MAX_FIELD_LEN];
481 char language[MAX_FIELD_LEN];
482 char assoc_language[MAX_FIELD_LEN];
483 char name[MAX_FIELD_LEN];
484 char defaultr[4];
485 char forced[4];
486 char characteristics[MAX_CHARACTERISTICS_LEN];
487 };
488
489 ✗ static struct rendition *new_rendition(HLSContext *c, struct rendition_info *info,
490 const char *url_base)
491 {
492 struct rendition *rend;
493 ✗ enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
494 char *characteristic;
495 char *chr_ptr;
496 char *saveptr;
497
498 ✗ if (!strcmp(info->type, "AUDIO"))
499 ✗ type = AVMEDIA_TYPE_AUDIO;
500 ✗ else if (!strcmp(info->type, "VIDEO"))
501 ✗ type = AVMEDIA_TYPE_VIDEO;
502 ✗ else if (!strcmp(info->type, "SUBTITLES"))
503 ✗ type = AVMEDIA_TYPE_SUBTITLE;
504 ✗ else if (!strcmp(info->type, "CLOSED-CAPTIONS"))
505 /* CLOSED-CAPTIONS is ignored since we do not support CEA-608 CC in
506 * AVC SEI RBSP anyway */
507 ✗ return NULL;
508
509 ✗ if (type == AVMEDIA_TYPE_UNKNOWN) {
510 ✗ av_log(c->ctx, AV_LOG_WARNING, "Can't support the type: %s\n", info->type);
511 ✗ return NULL;
512 }
513
514 /* URI is mandatory for subtitles as per spec */
515 ✗ if (type == AVMEDIA_TYPE_SUBTITLE && !info->uri[0]) {
516 ✗ av_log(c->ctx, AV_LOG_ERROR, "The URI tag is REQUIRED for subtitle.\n");
517 ✗ return NULL;
518 }
519
520 ✗ rend = av_mallocz(sizeof(struct rendition));
521 ✗ if (!rend)
522 ✗ return NULL;
523
524 ✗ dynarray_add(&c->renditions, &c->n_renditions, rend);
525
526 ✗ rend->type = type;
527 ✗ strcpy(rend->group_id, info->group_id);
528 ✗ strcpy(rend->language, info->language);
529 ✗ strcpy(rend->name, info->name);
530
531 /* add the playlist if this is an external rendition */
532 ✗ if (info->uri[0]) {
533 ✗ rend->playlist = new_playlist(c, info->uri, url_base);
534 ✗ if (rend->playlist) {
535 ✗ if (type == AVMEDIA_TYPE_SUBTITLE) {
536 ✗ rend->playlist->is_subtitle = 1;
537 ✗ rend->playlist->is_id3_timestamped = 0;
538 }
539 ✗ dynarray_add(&rend->playlist->renditions,
540 &rend->playlist->n_renditions, rend);
541 }
542 }
543
544 ✗ if (info->assoc_language[0]) {
545 ✗ size_t langlen = strlen(rend->language);
546 ✗ if (langlen < sizeof(rend->language) - 3) {
547 size_t assoc_len;
548 ✗ rend->language[langlen] = ',';
549 ✗ assoc_len = av_strlcpy(rend->language + langlen + 1,
550 ✗ info->assoc_language,
551 sizeof(rend->language) - langlen - 1);
552 ✗ if (langlen + assoc_len + 2 > sizeof(rend->language)) // truncation occurred
553 ✗ av_log(c->ctx, AV_LOG_WARNING, "Truncated rendition language: %s\n",
554 ✗ info->assoc_language);
555 }
556 }
557
558 ✗ if (!strcmp(info->defaultr, "YES"))
559 ✗ rend->disposition |= AV_DISPOSITION_DEFAULT;
560 ✗ if (!strcmp(info->forced, "YES"))
561 ✗ rend->disposition |= AV_DISPOSITION_FORCED;
562
563 ✗ chr_ptr = info->characteristics;
564 ✗ while ((characteristic = av_strtok(chr_ptr, ",", &saveptr))) {
565 ✗ if (!strcmp(characteristic, "public.accessibility.describes-music-and-sound"))
566 ✗ rend->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
567 ✗ else if (!strcmp(characteristic, "public.accessibility.describes-video"))
568 ✗ rend->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
569
570 ✗ chr_ptr = NULL;
571 }
572
573 ✗ return rend;
574 }
575
576 ✗ static void handle_rendition_args(struct rendition_info *info, const char *key,
577 int key_len, char **dest, int *dest_len)
578 {
579 ✗ if (!strncmp(key, "TYPE=", key_len)) {
580 ✗ *dest = info->type;
581 ✗ *dest_len = sizeof(info->type);
582 ✗ } else if (!strncmp(key, "URI=", key_len)) {
583 ✗ *dest = info->uri;
584 ✗ *dest_len = sizeof(info->uri);
585 ✗ } else if (!strncmp(key, "GROUP-ID=", key_len)) {
586 ✗ *dest = info->group_id;
587 ✗ *dest_len = sizeof(info->group_id);
588 ✗ } else if (!strncmp(key, "LANGUAGE=", key_len)) {
589 ✗ *dest = info->language;
590 ✗ *dest_len = sizeof(info->language);
591 ✗ } else if (!strncmp(key, "ASSOC-LANGUAGE=", key_len)) {
592 ✗ *dest = info->assoc_language;
593 ✗ *dest_len = sizeof(info->assoc_language);
594 ✗ } else if (!strncmp(key, "NAME=", key_len)) {
595 ✗ *dest = info->name;
596 ✗ *dest_len = sizeof(info->name);
597 ✗ } else if (!strncmp(key, "DEFAULT=", key_len)) {
598 ✗ *dest = info->defaultr;
599 ✗ *dest_len = sizeof(info->defaultr);
600 ✗ } else if (!strncmp(key, "FORCED=", key_len)) {
601 ✗ *dest = info->forced;
602 ✗ *dest_len = sizeof(info->forced);
603 ✗ } else if (!strncmp(key, "CHARACTERISTICS=", key_len)) {
604 ✗ *dest = info->characteristics;
605 ✗ *dest_len = sizeof(info->characteristics);
606 }
607 /*
608 * ignored:
609 * - AUTOSELECT: client may autoselect based on e.g. system language
610 * - INSTREAM-ID: EIA-608 closed caption number ("CC1".."CC4")
611 */
612 ✗ }
613
614 /* used by parse_playlist to allocate a new variant+playlist when the
615 * playlist is detected to be a Media Playlist (not Master Playlist)
616 * and we have no parent Master Playlist (parsing of which would have
617 * allocated the variant and playlist already)
618 * *pls == NULL => Master Playlist or parentless Media Playlist
619 * *pls != NULL => parented Media Playlist, playlist+variant allocated */
620 89 static int ensure_playlist(HLSContext *c, struct playlist **pls, const char *url)
621 {
622
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 89 if (*pls)
623 77 return 0;
624
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 12 if (!new_variant(c, NULL, url, NULL))
625 ✗ return AVERROR(ENOMEM);
626 12 *pls = c->playlists[c->n_playlists - 1];
627 12 return 0;
628 }
629
630 ✗ static int open_url_keepalive(AVFormatContext *s, AVIOContext **pb,
631 const char *url, AVDictionary **options)
632 {
633 #if !CONFIG_HTTP_PROTOCOL
634 return AVERROR_PROTOCOL_NOT_FOUND;
635 #else
636 int ret;
637 ✗ URLContext *uc = ffio_geturlcontext(*pb);
638 ✗ av_assert0(uc);
639 ✗ (*pb)->eof_reached = 0;
640 ✗ ret = ff_http_do_new_request2(uc, url, options);
641 ✗ if (ret < 0) {
642 ✗ ff_format_io_close(s, pb);
643 }
644 ✗ return ret;
645 #endif
646 }
647
648 61 static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
649 AVDictionary **opts, AVDictionary *opts2, int *is_http_out)
650 {
651 61 HLSContext *c = s->priv_data;
652 61 AVDictionary *tmp = NULL;
653 61 const char *proto_name = NULL;
654 int ret;
655 61 int is_http = 0;
656
657
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 61 if (av_strstart(url, "crypto", NULL)) {
658 ✗ if (url[6] == '+' || url[6] == ':')
659 ✗ proto_name = avio_find_protocol_name(url + 7);
660
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 61 } else if (av_strstart(url, "data", NULL)) {
661 ✗ if (url[4] == '+' || url[4] == ':')
662 ✗ proto_name = avio_find_protocol_name(url + 5);
663 }
664
665
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 61 if (!proto_name)
666 61 proto_name = avio_find_protocol_name(url);
667
668
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 61 if (!proto_name)
669 ✗ return AVERROR_INVALIDDATA;
670
671 // only http(s) & file are allowed
672
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 61 if (av_strstart(proto_name, "file", NULL)) {
673
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 61 if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
674 ✗ av_log(s, AV_LOG_ERROR,
675 "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
676 "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
677 url);
678 ✗ return AVERROR_INVALIDDATA;
679 }
680 ✗ } else if (av_strstart(proto_name, "http", NULL)) {
681 ✗ is_http = 1;
682 ✗ } else if (av_strstart(proto_name, "data", NULL)) {
683 ;
684 } else
685 ✗ return AVERROR_INVALIDDATA;
686
687
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 61 if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
688 ;
689
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 61 else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
690 ;
691
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 61 else if (av_strstart(url, "data", NULL) && !strncmp(proto_name, url + 5, strlen(proto_name)) && url[5 + strlen(proto_name)] == ':')
692 ;
693
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 61 else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
694 ✗ return AVERROR_INVALIDDATA;
695
696 61 av_dict_copy(&tmp, *opts, 0);
697 61 av_dict_copy(&tmp, opts2, 0);
698
699
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 61 if (is_http && c->http_persistent && *pb) {
700 ✗ ret = open_url_keepalive(c->ctx, pb, url, &tmp);
701 ✗ if (ret == AVERROR_EXIT) {
702 ✗ av_dict_free(&tmp);
703 ✗ return ret;
704 ✗ } else if (ret < 0) {
705 ✗ if (ret != AVERROR_EOF)
706 ✗ av_log(s, AV_LOG_WARNING,
707 "keepalive request failed for '%s' with error: '%s' when opening url, retrying with new connection\n",
708 ✗ url, av_err2str(ret));
709 ✗ av_dict_copy(&tmp, *opts, 0);
710 ✗ av_dict_copy(&tmp, opts2, 0);
711 ✗ ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
712 }
713 } else {
714 61 ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
715 }
716
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 61 if (ret >= 0) {
717 // update cookies on http response with setcookies.
718 61 char *new_cookies = NULL;
719
720
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 61 if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
721 61 av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
722
723
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 61 if (new_cookies)
724 ✗ av_dict_set(opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
725 }
726
727 61 av_dict_free(&tmp);
728
729
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 61 if (is_http_out)
730 61 *is_http_out = is_http;
731
732 61 return ret;
733 }
734
735 130 static int test_segment(AVFormatContext *s, const AVInputFormat *in_fmt, struct playlist *pls, struct segment *seg)
736 {
737 130 HLSContext *c = s->priv_data;
738 130 int matchA = 3;
739 130 int matchF = 0;
740
741
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 130 if (!c->extension_picky)
742 ✗ return 0;
743
744
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 130 if (strcmp(c->allowed_segment_extensions, "ALL"))
745 260 matchA = av_match_ext (seg->url, c->allowed_segment_extensions)
746
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 130 + 2*(ff_match_url_ext(seg->url, c->allowed_segment_extensions) > 0);
747
748
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 130 if (!matchA) {
749 ✗ 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);
750 ✗ return AVERROR_INVALIDDATA;
751 }
752
753
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 130 if (in_fmt) {
754
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 65 if (in_fmt->extensions) {
755 3 matchF = av_match_ext( seg->url, in_fmt->extensions)
756
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 3 + 2*(ff_match_url_ext(seg->url, in_fmt->extensions) > 0);
757 // Youtube uses aac files with .ts extension
758
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 3 if(av_match_name("mp4", in_fmt->name) || av_match_name("aac", in_fmt->name)) {
759 ✗ matchF |= av_match_ext( seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts")
760 ✗ + 2*(ff_match_url_ext(seg->url, "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts") > 0);
761 }
762
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 62 } else if (!strcmp(in_fmt->name, "mpegts")) {
763 62 const char *str = "ts,m2t,m2ts,mts,mpg,m4s,mpeg,mpegts"
764 ",html" // https://flash1.bogulus.cfd/
765 ;
766 124 matchF = av_match_ext( seg->url, str)
767
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 62 + 2*(ff_match_url_ext(seg->url, str) > 0);
768 ✗ } else if (!strcmp(in_fmt->name, "webvtt")) {
769 ✗ matchF = av_match_ext( seg->url, "vtt,webvtt")
770 ✗ + 2*(ff_match_url_ext(seg->url, "vtt,webvtt") > 0);
771 }
772
773
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 65 if (!(matchA & matchF)) {
774 ✗ 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);
775 ✗ return AVERROR_INVALIDDATA;
776 }
777 }
778
779 130 return 0;
780 }
781
782 12 static int parse_playlist(HLSContext *c, const char *url,
783 struct playlist *pls, AVIOContext *in)
784 {
785 12 int ret = 0, is_segment = 0, is_variant = 0;
786 12 int64_t duration = 0;
787 12 enum KeyType key_type = KEY_NONE;
788 12 uint8_t iv[16] = "";
789 12 int has_iv = 0;
790 12 char key[MAX_URL_SIZE] = "";
791 char line[MAX_URL_SIZE];
792 const char *ptr;
793 12 int close_in = 0;
794 12 int64_t seg_offset = 0;
795 12 int64_t seg_size = -1;
796 12 uint8_t *new_url = NULL;
797 struct variant_info variant_info;
798 char tmp_str[MAX_URL_SIZE];
799 12 struct segment *cur_init_section = NULL;
800 12 int is_http = av_strstart(url, "http", NULL);
801 12 struct segment **prev_segments = NULL;
802 12 int prev_n_segments = 0;
803 12 int64_t prev_start_seq_no = -1;
804
805
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 12 if (is_http && !in && c->http_persistent && c->playlist_pb) {
806 ✗ in = c->playlist_pb;
807 ✗ ret = open_url_keepalive(c->ctx, &c->playlist_pb, url, NULL);
808 ✗ if (ret == AVERROR_EXIT) {
809 ✗ return ret;
810 ✗ } else if (ret < 0) {
811 ✗ if (ret != AVERROR_EOF)
812 ✗ av_log(c->ctx, AV_LOG_WARNING,
813 "keepalive request failed for '%s' with error: '%s' when parsing playlist\n",
814 ✗ url, av_err2str(ret));
815 ✗ in = NULL;
816 }
817 }
818
819
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 12 if (!in) {
820 ✗ AVDictionary *opts = NULL;
821 ✗ av_dict_copy(&opts, c->avio_opts, 0);
822
823 ✗ if (c->http_persistent)
824 ✗ av_dict_set(&opts, "multiple_requests", "1", 0);
825
826 ✗ ret = c->ctx->io_open(c->ctx, &in, url, AVIO_FLAG_READ, &opts);
827 ✗ av_dict_free(&opts);
828 ✗ if (ret < 0)
829 ✗ return ret;
830
831 ✗ if (is_http && c->http_persistent)
832 ✗ c->playlist_pb = in;
833 else
834 ✗ close_in = 1;
835 }
836
837
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 12 if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0)
838 ✗ url = new_url;
839
840 12 ff_get_chomp_line(in, line, sizeof(line));
841
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 12 if (strcmp(line, "#EXTM3U")) {
842 ✗ ret = AVERROR_INVALIDDATA;
843 ✗ goto fail;
844 }
845
846
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 12 if (pls) {
847 ✗ prev_start_seq_no = pls->start_seq_no;
848 ✗ prev_segments = pls->segments;
849 ✗ prev_n_segments = pls->n_segments;
850 ✗ pls->segments = NULL;
851 ✗ pls->n_segments = 0;
852
853 ✗ pls->finished = 0;
854 ✗ pls->type = PLS_TYPE_UNSPECIFIED;
855 }
856
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 225 while (!avio_feof(in)) {
857 213 ff_get_chomp_line(in, line, sizeof(line));
858
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 213 if (av_strstart(line, "#EXT-X-STREAM-INF:", &ptr)) {
859 ✗ is_variant = 1;
860 ✗ memset(&variant_info, 0, sizeof(variant_info));
861 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_variant_args,
862 &variant_info);
863
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 213 } else if (av_strstart(line, "#EXT-X-KEY:", &ptr)) {
864 ✗ struct key_info info = {{0}};
865 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_key_args,
866 &info);
867 ✗ key_type = KEY_NONE;
868 ✗ has_iv = 0;
869 ✗ if (!strcmp(info.method, "AES-128"))
870 ✗ key_type = KEY_AES_128;
871 ✗ if (!strcmp(info.method, "SAMPLE-AES"))
872 ✗ key_type = KEY_SAMPLE_AES;
873 ✗ if (!av_strncasecmp(info.iv, "0x", 2)) {
874 ✗ ff_hex_to_data(iv, info.iv + 2);
875 ✗ has_iv = 1;
876 }
877 ✗ av_strlcpy(key, info.uri, sizeof(key));
878
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 213 } else if (av_strstart(line, "#EXT-X-MEDIA:", &ptr)) {
879 ✗ struct rendition_info info = {{0}};
880 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_rendition_args,
881 &info);
882 ✗ new_rendition(c, &info, url);
883
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 213 } else if (av_strstart(line, "#EXT-X-TARGETDURATION:", &ptr)) {
884 int64_t t;
885 12 ret = ensure_playlist(c, &pls, url);
886
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 12 if (ret < 0)
887 ✗ goto fail;
888 12 t = strtoll(ptr, NULL, 10);
889
2/4
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✓ Branch 3 taken 12 times.
 12 if (t < 0 || t >= INT64_MAX / AV_TIME_BASE) {
890 ✗ ret = AVERROR_INVALIDDATA;
891 ✗ goto fail;
892 }
893 12 pls->target_duration = t * AV_TIME_BASE;
894
2/2
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 201 } else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
895 uint64_t seq_no;
896 12 ret = ensure_playlist(c, &pls, url);
897
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 12 if (ret < 0)
898 ✗ goto fail;
899 12 seq_no = strtoull(ptr, NULL, 10);
900
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 12 if (seq_no > INT64_MAX/2) {
901 ✗ av_log(c->ctx, AV_LOG_DEBUG, "MEDIA-SEQUENCE higher than "
902 "INT64_MAX/2, mask out the highest bit\n");
903 ✗ seq_no &= INT64_MAX/2;
904 }
905 12 pls->start_seq_no = seq_no;
906
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 189 } else if (av_strstart(line, "#EXT-X-PLAYLIST-TYPE:", &ptr)) {
907 ✗ ret = ensure_playlist(c, &pls, url);
908 ✗ if (ret < 0)
909 ✗ goto fail;
910 ✗ if (!strcmp(ptr, "EVENT"))
911 ✗ pls->type = PLS_TYPE_EVENT;
912 ✗ else if (!strcmp(ptr, "VOD"))
913 ✗ pls->type = PLS_TYPE_VOD;
914
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 189 } else if (av_strstart(line, "#EXT-X-MAP:", &ptr)) {
915 ✗ struct init_section_info info = {{0}};
916 ✗ ret = ensure_playlist(c, &pls, url);
917 ✗ if (ret < 0)
918 ✗ goto fail;
919 ✗ ff_parse_key_value(ptr, (ff_parse_key_val_cb) handle_init_section_args,
920 &info);
921 ✗ cur_init_section = new_init_section(pls, &info, url);
922 ✗ if (!cur_init_section) {
923 ✗ ret = AVERROR(ENOMEM);
924 ✗ goto fail;
925 }
926 ✗ cur_init_section->key_type = key_type;
927 ✗ if (has_iv) {
928 ✗ memcpy(cur_init_section->iv, iv, sizeof(iv));
929 } else {
930 ✗ int64_t seq = pls->start_seq_no + pls->n_segments;
931 ✗ memset(cur_init_section->iv, 0, sizeof(cur_init_section->iv));
932 ✗ AV_WB64(cur_init_section->iv + 8, seq);
933 }
934
935 ✗ if (key_type != KEY_NONE) {
936 ✗ ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
937 ✗ if (!tmp_str[0]) {
938 ✗ av_free(cur_init_section);
939 ✗ ret = AVERROR_INVALIDDATA;
940 ✗ goto fail;
941 }
942 ✗ cur_init_section->key = av_strdup(tmp_str);
943 ✗ if (!cur_init_section->key) {
944 ✗ av_free(cur_init_section);
945 ✗ ret = AVERROR(ENOMEM);
946 ✗ goto fail;
947 }
948 } else {
949 ✗ cur_init_section->key = NULL;
950 }
951
952
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 189 } else if (av_strstart(line, "#EXT-X-START:", &ptr)) {
953 ✗ const char *time_offset_value = NULL;
954 ✗ ret = ensure_playlist(c, &pls, url);
955 ✗ if (ret < 0) {
956 ✗ goto fail;
957 }
958 ✗ if (av_strstart(ptr, "TIME-OFFSET=", &time_offset_value)) {
959 ✗ float offset = strtof(time_offset_value, NULL);
960 ✗ pls->start_time_offset = offset * AV_TIME_BASE;
961 ✗ pls->time_offset_flag = 1;
962 } else {
963 ✗ av_log(c->ctx, AV_LOG_WARNING, "#EXT-X-START value is"
964 "invalid, it will be ignored");
965 ✗ continue;
966 }
967
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 189 } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) {
968
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 11 if (pls)
969 11 pls->finished = 1;
970
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 178 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
971 65 is_segment = 1;
972 65 duration = atof(ptr) * AV_TIME_BASE;
973
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 113 } else if (av_strstart(line, "#EXT-X-BYTERANGE:", &ptr)) {
974 20 seg_size = strtoll(ptr, NULL, 10);
975 20 ptr = strchr(ptr, '@');
976
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 20 if (ptr)
977 20 seg_offset = strtoll(ptr+1, NULL, 10);
978
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 93 } else if (av_strstart(line, "#", NULL)) {
979 16 av_log(c->ctx, AV_LOG_VERBOSE, "Skip ('%s')\n", line);
980 16 continue;
981
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 77 } else if (line[0]) {
982
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 65 if (is_variant) {
983 ✗ if (!new_variant(c, &variant_info, line, url)) {
984 ✗ ret = AVERROR(ENOMEM);
985 ✗ goto fail;
986 }
987 ✗ is_variant = 0;
988 }
989
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 65 if (is_segment) {
990 struct segment *seg;
991 65 ret = ensure_playlist(c, &pls, url);
992
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 65 if (ret < 0)
993 ✗ goto fail;
994 65 seg = av_malloc(sizeof(struct segment));
995
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 65 if (!seg) {
996 ✗ ret = AVERROR(ENOMEM);
997 ✗ goto fail;
998 }
999
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 65 if (has_iv) {
1000 ✗ memcpy(seg->iv, iv, sizeof(iv));
1001 } else {
1002 65 uint64_t seq = pls->start_seq_no + (uint64_t)pls->n_segments;
1003 65 memset(seg->iv, 0, sizeof(seg->iv));
1004 65 AV_WB64(seg->iv + 8, seq);
1005 }
1006
1007
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 65 if (key_type != KEY_NONE) {
1008 ✗ ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, key);
1009 ✗ if (!tmp_str[0]) {
1010 ✗ ret = AVERROR_INVALIDDATA;
1011 ✗ av_free(seg);
1012 ✗ goto fail;
1013 }
1014 ✗ seg->key = av_strdup(tmp_str);
1015 ✗ if (!seg->key) {
1016 ✗ av_free(seg);
1017 ✗ ret = AVERROR(ENOMEM);
1018 ✗ goto fail;
1019 }
1020 } else {
1021 65 seg->key = NULL;
1022 }
1023
1024 65 ff_make_absolute_url(tmp_str, sizeof(tmp_str), url, line);
1025
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 65 if (!tmp_str[0]) {
1026 ✗ ret = AVERROR_INVALIDDATA;
1027 ✗ if (seg->key)
1028 ✗ av_free(seg->key);
1029 ✗ av_free(seg);
1030 ✗ goto fail;
1031 }
1032 65 seg->url = av_strdup(tmp_str);
1033
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 65 if (!seg->url) {
1034 ✗ av_free(seg->key);
1035 ✗ av_free(seg);
1036 ✗ ret = AVERROR(ENOMEM);
1037 ✗ goto fail;
1038 }
1039
1040
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 65 ret = test_segment(c->ctx, pls->ctx ? pls->ctx->iformat : NULL, pls, seg);
1041
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 65 if (ret < 0) {
1042 ✗ av_free(seg->url);
1043 ✗ av_free(seg->key);
1044 ✗ av_free(seg);
1045 ✗ goto fail;
1046 }
1047
1048
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 65 if (duration < 0.001 * AV_TIME_BASE) {
1049 ✗ av_log(c->ctx, AV_LOG_WARNING, "Cannot get correct #EXTINF value of segment %s,"
1050 " set to default value to 1ms.\n", seg->url);
1051 ✗ duration = 0.001 * AV_TIME_BASE;
1052 }
1053 65 seg->duration = duration;
1054 65 seg->key_type = key_type;
1055 65 dynarray_add(&pls->segments, &pls->n_segments, seg);
1056 65 is_segment = 0;
1057
1058 65 seg->size = seg_size;
1059
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 65 if (seg_size >= 0) {
1060 20 seg->url_offset = seg_offset;
1061 20 seg_offset += seg_size;
1062 20 seg_size = -1;
1063 } else {
1064 45 seg->url_offset = 0;
1065 45 seg_offset = 0;
1066 }
1067
1068 65 seg->init_section = cur_init_section;
1069 }
1070 }
1071 }
1072
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 12 if (prev_segments) {
1073 ✗ if (pls->start_seq_no > prev_start_seq_no && c->first_timestamp != AV_NOPTS_VALUE) {
1074 ✗ int64_t prev_timestamp = c->first_timestamp;
1075 int i;
1076 ✗ int64_t diff = pls->start_seq_no - prev_start_seq_no;
1077 ✗ for (i = 0; i < prev_n_segments && i < diff; i++) {
1078 ✗ c->first_timestamp += prev_segments[i]->duration;
1079 }
1080 ✗ av_log(c->ctx, AV_LOG_DEBUG, "Media sequence change (%"PRId64" -> %"PRId64")"
1081 " reflected in first_timestamp: %"PRId64" -> %"PRId64"\n",
1082 ✗ prev_start_seq_no, pls->start_seq_no,
1083 prev_timestamp, c->first_timestamp);
1084 ✗ } else if (pls->start_seq_no < prev_start_seq_no) {
1085 ✗ av_log(c->ctx, AV_LOG_WARNING, "Media sequence changed unexpectedly: %"PRId64" -> %"PRId64"\n",
1086 ✗ prev_start_seq_no, pls->start_seq_no);
1087 }
1088 ✗ free_segment_dynarray(prev_segments, prev_n_segments);
1089 ✗ av_freep(&prev_segments);
1090 }
1091
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 12 if (pls)
1092 12 pls->last_load_time = av_gettime_relative();
1093
1094 ✗ fail:
1095 12 av_free(new_url);
1096
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 12 if (close_in)
1097 ✗ ff_format_io_close(c->ctx, &in);
1098 12 c->ctx->ctx_flags = c->ctx->ctx_flags & ~(unsigned)AVFMTCTX_UNSEEKABLE;
1099
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 12 if (!c->n_variants || !c->variants[0]->n_playlists ||
1100
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 12 !(c->variants[0]->playlists[0]->finished ||
1101
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 1 c->variants[0]->playlists[0]->type == PLS_TYPE_EVENT))
1102 1 c->ctx->ctx_flags |= AVFMTCTX_UNSEEKABLE;
1103 12 return ret;
1104 }
1105
1106 7137 static struct segment *current_segment(struct playlist *pls)
1107 {
1108 7137 int64_t n = pls->cur_seq_no - pls->start_seq_no;
1109
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 7137 if (n >= pls->n_segments)
1110 2 return NULL;
1111 7135 return pls->segments[n];
1112 }
1113
1114 366 static struct segment *next_segment(struct playlist *pls)
1115 {
1116 366 int64_t n = pls->cur_seq_no - pls->start_seq_no + 1;
1117
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 366 if (n >= pls->n_segments)
1118 72 return NULL;
1119 294 return pls->segments[n];
1120 }
1121
1122 366 static int read_from_url(struct playlist *pls, struct segment *seg,
1123 uint8_t *buf, int buf_size)
1124 {
1125 int ret;
1126
1127 /* limit read if the segment was only a part of a file */
1128
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 366 if (seg->size >= 0)
1129 100 buf_size = FFMIN(buf_size, seg->size - pls->cur_seg_offset);
1130
1131 366 ret = avio_read(pls->input, buf, buf_size);
1132
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 366 if (ret > 0)
1133 307 pls->cur_seg_offset += ret;
1134
1135 366 return ret;
1136 }
1137
1138 /* Parse the raw ID3 data and pass contents to caller */
1139 ✗ static void parse_id3(AVFormatContext *s, AVIOContext *pb,
1140 AVDictionary **metadata, int64_t *dts, HLSAudioSetupInfo *audio_setup_info,
1141 ID3v2ExtraMetaAPIC **apic, ID3v2ExtraMeta **extra_meta)
1142 {
1143 static const char id3_priv_owner_ts[] = "com.apple.streaming.transportStreamTimestamp";
1144 static const char id3_priv_owner_audio_setup[] = "com.apple.streaming.audioDescription";
1145 ID3v2ExtraMeta *meta;
1146
1147 ✗ ff_id3v2_read_dict(pb, metadata, ID3v2_DEFAULT_MAGIC, extra_meta);
1148 ✗ for (meta = *extra_meta; meta; meta = meta->next) {
1149 ✗ if (!strcmp(meta->tag, "PRIV")) {
1150 ✗ ID3v2ExtraMetaPRIV *priv = &meta->data.priv;
1151 ✗ if (priv->datasize == 8 && !av_strncasecmp(priv->owner, id3_priv_owner_ts, 44)) {
1152 /* 33-bit MPEG timestamp */
1153 ✗ int64_t ts = AV_RB64(priv->data);
1154 ✗ av_log(s, AV_LOG_DEBUG, "HLS ID3 audio timestamp %"PRId64"\n", ts);
1155 ✗ if ((ts & ~((1ULL << 33) - 1)) == 0)
1156 ✗ *dts = ts;
1157 else
1158 ✗ av_log(s, AV_LOG_ERROR, "Invalid HLS ID3 audio timestamp %"PRId64"\n", ts);
1159 ✗ } else if (priv->datasize >= 8 && !av_strncasecmp(priv->owner, id3_priv_owner_audio_setup, 36)) {
1160 ✗ ff_hls_senc_read_audio_setup_info(audio_setup_info, priv->data, priv->datasize);
1161 }
1162 ✗ } else if (!strcmp(meta->tag, "APIC") && apic)
1163 ✗ *apic = &meta->data.apic;
1164 }
1165 ✗ }
1166
1167 /* Check if the ID3 metadata contents have changed */
1168 ✗ static int id3_has_changed_values(struct playlist *pls, AVDictionary *metadata,
1169 ID3v2ExtraMetaAPIC *apic)
1170 {
1171 ✗ const AVDictionaryEntry *entry = NULL;
1172 const AVDictionaryEntry *oldentry;
1173 /* check that no keys have changed values */
1174 ✗ while ((entry = av_dict_iterate(metadata, entry))) {
1175 ✗ oldentry = av_dict_get(pls->id3_initial, entry->key, NULL, AV_DICT_MATCH_CASE);
1176 ✗ if (!oldentry || strcmp(oldentry->value, entry->value) != 0)
1177 ✗ return 1;
1178 }
1179
1180 /* check if apic appeared */
1181 ✗ if (apic && (pls->ctx->nb_streams != 2 || !pls->ctx->streams[1]->attached_pic.data))
1182 ✗ return 1;
1183
1184 ✗ if (apic) {
1185 ✗ int size = pls->ctx->streams[1]->attached_pic.size;
1186 ✗ if (size != apic->buf->size - AV_INPUT_BUFFER_PADDING_SIZE)
1187 ✗ return 1;
1188
1189 ✗ if (memcmp(apic->buf->data, pls->ctx->streams[1]->attached_pic.data, size) != 0)
1190 ✗ return 1;
1191 }
1192
1193 ✗ return 0;
1194 }
1195
1196 /* Parse ID3 data and handle the found data */
1197 ✗ static void handle_id3(AVIOContext *pb, struct playlist *pls)
1198 {
1199 ✗ AVDictionary *metadata = NULL;
1200 ✗ ID3v2ExtraMetaAPIC *apic = NULL;
1201 ✗ ID3v2ExtraMeta *extra_meta = NULL;
1202 ✗ int64_t timestamp = AV_NOPTS_VALUE;
1203
1204 ✗ parse_id3(pls->ctx, pb, &metadata, &timestamp, &pls->audio_setup_info, &apic, &extra_meta);
1205
1206 ✗ if (timestamp != AV_NOPTS_VALUE) {
1207 ✗ pls->id3_mpegts_timestamp = timestamp;
1208 ✗ pls->id3_offset = 0;
1209 }
1210
1211 ✗ if (!pls->id3_found) {
1212 /* initial ID3 tags */
1213 ✗ av_assert0(!pls->id3_deferred_extra);
1214 ✗ pls->id3_found = 1;
1215
1216 /* get picture attachment and set text metadata */
1217 ✗ if (pls->ctx->nb_streams)
1218 ✗ ff_id3v2_parse_apic(pls->ctx, extra_meta);
1219 else
1220 /* demuxer not yet opened, defer picture attachment */
1221 ✗ pls->id3_deferred_extra = extra_meta;
1222
1223 ✗ ff_id3v2_parse_priv_dict(&metadata, extra_meta);
1224 ✗ av_dict_copy(&pls->ctx->metadata, metadata, 0);
1225 ✗ pls->id3_initial = metadata;
1226
1227 } else {
1228 ✗ if (!pls->id3_changed && id3_has_changed_values(pls, metadata, apic)) {
1229 ✗ avpriv_report_missing_feature(pls->parent, "Changing ID3 metadata in HLS audio elementary stream");
1230 ✗ pls->id3_changed = 1;
1231 }
1232 ✗ av_dict_free(&metadata);
1233 }
1234
1235 ✗ if (!pls->id3_deferred_extra)
1236 ✗ ff_id3v2_free_extra_meta(&extra_meta);
1237 ✗ }
1238
1239 12 static void intercept_id3(struct playlist *pls, uint8_t *buf,
1240 int buf_size, int *len)
1241 {
1242 /* intercept id3 tags, we do not want to pass them to the raw
1243 * demuxer on all segment switches */
1244 int bytes;
1245 12 int id3_buf_pos = 0;
1246 12 int fill_buf = 0;
1247 12 struct segment *seg = current_segment(pls);
1248
1249 /* gather all the id3 tags */
1250 while (1) {
1251 /* see if we can retrieve enough data for ID3 header */
1252
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 12 if (*len < ID3v2_HEADER_SIZE && buf_size >= ID3v2_HEADER_SIZE) {
1253 ✗ bytes = read_from_url(pls, seg, buf + *len, ID3v2_HEADER_SIZE - *len);
1254 ✗ if (bytes > 0) {
1255
1256 ✗ if (bytes == ID3v2_HEADER_SIZE - *len)
1257 /* no EOF yet, so fill the caller buffer again after
1258 * we have stripped the ID3 tags */
1259 ✗ fill_buf = 1;
1260
1261 ✗ *len += bytes;
1262
1263 ✗ } else if (*len <= 0) {
1264 /* error/EOF */
1265 ✗ *len = bytes;
1266 ✗ fill_buf = 0;
1267 }
1268 }
1269
1270
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 12 if (*len < ID3v2_HEADER_SIZE)
1271 ✗ break;
1272
1273
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 12 if (ff_id3v2_match(buf, ID3v2_DEFAULT_MAGIC)) {
1274 ✗ int64_t maxsize = seg->size >= 0 ? seg->size : 1024*1024;
1275 ✗ int taglen = ff_id3v2_tag_len(buf);
1276 ✗ int tag_got_bytes = FFMIN(taglen, *len);
1277 ✗ int remaining = taglen - tag_got_bytes;
1278
1279 ✗ if (taglen > maxsize) {
1280 ✗ av_log(pls->parent, AV_LOG_ERROR, "Too large HLS ID3 tag (%d > %"PRId64" bytes)\n",
1281 taglen, maxsize);
1282 ✗ break;
1283 }
1284
1285 /*
1286 * Copy the id3 tag to our temporary id3 buffer.
1287 * We could read a small id3 tag directly without memcpy, but
1288 * we would still need to copy the large tags, and handling
1289 * both of those cases together with the possibility for multiple
1290 * tags would make the handling a bit complex.
1291 */
1292 ✗ pls->id3_buf = av_fast_realloc(pls->id3_buf, &pls->id3_buf_size, id3_buf_pos + taglen);
1293 ✗ if (!pls->id3_buf)
1294 ✗ break;
1295 ✗ memcpy(pls->id3_buf + id3_buf_pos, buf, tag_got_bytes);
1296 ✗ id3_buf_pos += tag_got_bytes;
1297
1298 /* strip the intercepted bytes */
1299 ✗ *len -= tag_got_bytes;
1300 ✗ memmove(buf, buf + tag_got_bytes, *len);
1301 ✗ av_log(pls->parent, AV_LOG_DEBUG, "Stripped %d HLS ID3 bytes\n", tag_got_bytes);
1302
1303 ✗ if (remaining > 0) {
1304 /* read the rest of the tag in */
1305 ✗ if (read_from_url(pls, seg, pls->id3_buf + id3_buf_pos, remaining) != remaining)
1306 ✗ break;
1307 ✗ id3_buf_pos += remaining;
1308 ✗ av_log(pls->parent, AV_LOG_DEBUG, "Stripped additional %d HLS ID3 bytes\n", remaining);
1309 }
1310
1311 } else {
1312 /* no more ID3 tags */
1313 12 break;
1314 }
1315 }
1316
1317 /* re-fill buffer for the caller unless EOF */
1318
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 12 if (*len >= 0 && (fill_buf || *len == 0)) {
1319 ✗ bytes = read_from_url(pls, seg, buf + *len, buf_size - *len);
1320
1321 /* ignore error if we already had some data */
1322 ✗ if (bytes >= 0)
1323 ✗ *len += bytes;
1324 ✗ else if (*len == 0)
1325 ✗ *len = bytes;
1326 }
1327
1328
1/2
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 12 if (pls->id3_buf) {
1329 /* Now parse all the ID3 tags */
1330 FFIOContext id3ioctx;
1331 ✗ ffio_init_read_context(&id3ioctx, pls->id3_buf, id3_buf_pos);
1332 ✗ handle_id3(&id3ioctx.pub, pls);
1333 }
1334
1335
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 12 if (pls->is_id3_timestamped == -1)
1336 12 pls->is_id3_timestamped = (pls->id3_mpegts_timestamp != AV_NOPTS_VALUE);
1337 12 }
1338
1339 ✗ static int read_key(HLSContext *c, struct playlist *pls, struct segment *seg)
1340 {
1341 ✗ AVIOContext *pb = NULL;
1342
1343 ✗ int ret = open_url(pls->parent, &pb, seg->key, &c->avio_opts, NULL, NULL);
1344 ✗ if (ret < 0) {
1345 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to open key file %s, %s\n",
1346 ✗ seg->key, av_err2str(ret));
1347 ✗ return ret;
1348 }
1349
1350 ✗ ret = avio_read(pb, pls->key, sizeof(pls->key));
1351 ✗ ff_format_io_close(pls->parent, &pb);
1352 ✗ if (ret != sizeof(pls->key)) {
1353 ✗ if (ret < 0) {
1354 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to read key file %s, %s\n",
1355 ✗ seg->key, av_err2str(ret));
1356 } else {
1357 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to read key file %s, read bytes %d != %zu\n",
1358 seg->key, ret, sizeof(pls->key));
1359 ✗ ret = AVERROR_INVALIDDATA;
1360 }
1361
1362 ✗ return ret;
1363 }
1364
1365 ✗ av_strlcpy(pls->key_url, seg->key, sizeof(pls->key_url));
1366
1367 ✗ return 0;
1368 }
1369
1370 61 static int open_input(HLSContext *c, struct playlist *pls, struct segment *seg, AVIOContext **in)
1371 {
1372 61 AVDictionary *opts = NULL;
1373 int ret;
1374 61 int is_http = 0;
1375
1376
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 61 if (c->http_persistent)
1377 61 av_dict_set(&opts, "multiple_requests", "1", 0);
1378
1379
2/2
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 61 if (seg->size >= 0) {
1380 /* try to restrict the HTTP request to the part we want
1381 * (if this is in fact a HTTP request) */
1382 20 av_dict_set_int(&opts, "offset", seg->url_offset, 0);
1383 20 av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
1384 }
1385
1386 61 av_log(pls->parent, AV_LOG_VERBOSE, "HLS request for url '%s', offset %"PRId64", playlist %d\n",
1387 seg->url, seg->url_offset, pls->index);
1388
1389
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 61 if (seg->key_type == KEY_AES_128 || seg->key_type == KEY_SAMPLE_AES) {
1390 ✗ if (strcmp(seg->key, pls->key_url)) {
1391 ✗ ret = read_key(c, pls, seg);
1392 ✗ if (ret < 0)
1393 ✗ goto cleanup;
1394 }
1395 }
1396
1397
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 61 if (seg->key_type == KEY_AES_128) {
1398 char iv[33], key[33], url[MAX_URL_SIZE];
1399 ✗ ff_data_to_hex(iv, seg->iv, sizeof(seg->iv), 0);
1400 ✗ ff_data_to_hex(key, pls->key, sizeof(pls->key), 0);
1401 ✗ if (strstr(seg->url, "://"))
1402 ✗ snprintf(url, sizeof(url), "crypto+%s", seg->url);
1403 else
1404 ✗ snprintf(url, sizeof(url), "crypto:%s", seg->url);
1405
1406 ✗ av_dict_set(&opts, "key", key, 0);
1407 ✗ av_dict_set(&opts, "iv", iv, 0);
1408
1409 ✗ ret = open_url(pls->parent, in, url, &c->avio_opts, opts, &is_http);
1410 ✗ if (ret < 0) {
1411 ✗ goto cleanup;
1412 }
1413 ✗ ret = 0;
1414 } else {
1415 61 ret = open_url(pls->parent, in, seg->url, &c->avio_opts, opts, &is_http);
1416 }
1417
1418 /* Seek to the requested position. If this was a HTTP request, the offset
1419 * should already be where want it to, but this allows e.g. local testing
1420 * without a HTTP server.
1421 *
1422 * This is not done for HTTP at all as avio_seek() does internal bookkeeping
1423 * of file offset which is out-of-sync with the actual offset when "offset"
1424 * AVOption is used with http protocol, causing the seek to not be a no-op
1425 * as would be expected. Wrong offset received from the server will not be
1426 * noticed without the call, though.
1427 */
1428
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 61 if (ret == 0 && !is_http && seg->url_offset) {
1429 15 int64_t seekret = avio_seek(*in, seg->url_offset, SEEK_SET);
1430
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 15 if (seekret < 0) {
1431 ✗ av_log(pls->parent, AV_LOG_ERROR, "Unable to seek to offset %"PRId64" of HLS segment '%s'\n", seg->url_offset, seg->url);
1432 ✗ ret = seekret;
1433 ✗ ff_format_io_close(pls->parent, in);
1434 }
1435 }
1436
1437 61 cleanup:
1438 61 av_dict_free(&opts);
1439 61 pls->cur_seg_offset = 0;
1440 61 return ret;
1441 }
1442
1443 61 static int update_init_section(struct playlist *pls, struct segment *seg)
1444 {
1445 static const int max_init_section_size = 1024*1024;
1446 61 HLSContext *c = pls->parent->priv_data;
1447 int64_t sec_size;
1448 int64_t urlsize;
1449 int ret;
1450
1451
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 61 if (seg->init_section == pls->cur_init_section)
1452 61 return 0;
1453
1454 ✗ pls->cur_init_section = NULL;
1455
1456 ✗ if (!seg->init_section)
1457 ✗ return 0;
1458
1459 ✗ ret = open_input(c, pls, seg->init_section, &pls->input);
1460 ✗ if (ret < 0) {
1461 ✗ av_log(pls->parent, AV_LOG_WARNING,
1462 "Failed to open an initialization section in playlist %d\n",
1463 pls->index);
1464 ✗ return ret;
1465 }
1466
1467 ✗ if (seg->init_section->size >= 0)
1468 ✗ sec_size = seg->init_section->size;
1469 ✗ else if ((urlsize = avio_size(pls->input)) >= 0)
1470 ✗ sec_size = urlsize;
1471 else
1472 ✗ sec_size = max_init_section_size;
1473
1474 ✗ av_log(pls->parent, AV_LOG_DEBUG,
1475 "Downloading an initialization section of size %"PRId64"\n",
1476 sec_size);
1477
1478 ✗ sec_size = FFMIN(sec_size, max_init_section_size);
1479
1480 ✗ av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
1481
1482 ✗ ret = read_from_url(pls, seg->init_section, pls->init_sec_buf,
1483 ✗ pls->init_sec_buf_size);
1484 ✗ ff_format_io_close(pls->parent, &pls->input);
1485
1486 ✗ if (ret < 0)
1487 ✗ return ret;
1488
1489 ✗ pls->cur_init_section = seg->init_section;
1490 ✗ pls->init_sec_data_len = ret;
1491 ✗ pls->init_sec_buf_read_offset = 0;
1492
1493 /* spec says audio elementary streams do not have media initialization
1494 * sections, so there should be no ID3 timestamps */
1495 ✗ pls->is_id3_timestamped = 0;
1496
1497 ✗ return 0;
1498 }
1499
1500 95 static int64_t default_reload_interval(struct playlist *pls)
1501 {
1502 95 return pls->n_segments > 0 ?
1503
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 95 pls->segments[pls->n_segments - 1]->duration :
1504 pls->target_duration;
1505 }
1506
1507 6863 static int playlist_needed(struct playlist *pls)
1508 {
1509 6863 AVFormatContext *s = pls->parent;
1510 int i, j;
1511 6863 int stream_needed = 0;
1512 int first_st;
1513
1514 /* If there is no context or streams yet, the playlist is needed */
1515
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 6863 if ((!pls->ctx || !pls->n_main_streams) && !pls->is_subtitle)
1516 24 return 1;
1517
1518 /* check if any of the streams in the playlist are needed */
1519
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 6839 for (i = 0; i < pls->n_main_streams; i++) {
1520
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 6839 if (pls->main_streams[i]->discard < AVDISCARD_ALL) {
1521 6839 stream_needed = 1;
1522 6839 break;
1523 }
1524 }
1525
1526 /* If all streams in the playlist were discarded, the playlist is not
1527 * needed (regardless of whether whole programs are discarded or not). */
1528
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 6839 if (!stream_needed)
1529 ✗ return 0;
1530
1531 /* Otherwise, check if all the programs (variants) this playlist is in are
1532 * discarded. Since all streams in the playlist are part of the same programs
1533 * we can just check the programs of the first stream. */
1534
1535 6839 first_st = pls->main_streams[0]->index;
1536
1537
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 6839 for (i = 0; i < s->nb_programs; i++) {
1538 6839 AVProgram *program = s->programs[i];
1539
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 6839 if (program->discard < AVDISCARD_ALL) {
1540
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 6839 for (j = 0; j < program->nb_stream_indexes; j++) {
1541
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 6839 if (program->stream_index[j] == first_st) {
1542 /* playlist is in an undiscarded program */
1543 6839 return 1;
1544 }
1545 }
1546 }
1547 }
1548
1549 /* some streams were not discarded but all the programs were */
1550 ✗ return 0;
1551 }
1552
1553 400 static int reload_playlist(struct playlist *v, HLSContext *c)
1554 {
1555 400 int ret = 0;
1556 400 int reload_count = 0;
1557
1558 400 v->needed = playlist_needed(v);
1559
1560
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 400 if (!v->needed)
1561 ✗ return AVERROR_EOF;
1562
1563
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 400 if (!v->input || (c->http_persistent && v->input_read_done)) {
1564 int64_t reload_interval;
1565
1566 /* Check that the playlist is still needed before opening a new
1567 * segment. */
1568 95 v->needed = playlist_needed(v);
1569
1570
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 95 if (!v->needed) {
1571 ✗ av_log(v->parent, AV_LOG_INFO, "No longer receiving playlist %d ('%s')\n",
1572 ✗ v->index, v->url);
1573 ✗ return AVERROR_EOF;
1574 }
1575
1576 /* If this is a live stream and the reload interval has elapsed since
1577 * the last playlist reload, reload the playlists now. */
1578 95 reload_interval = default_reload_interval(v);
1579
1580 95 reload:
1581 95 reload_count++;
1582
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 95 if (reload_count > c->max_reload)
1583 ✗ return AVERROR_EOF;
1584
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 95 if (!v->finished &&
1585
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 3 av_gettime_relative() - v->last_load_time >= reload_interval) {
1586 ✗ if ((ret = parse_playlist(c, v->url, v, NULL)) < 0) {
1587 ✗ if (ret != AVERROR_EXIT)
1588 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to reload playlist %d\n",
1589 v->index);
1590 ✗ return ret;
1591 }
1592 /* If we need to reload the playlist again below (if
1593 * there's still no more segments), switch to a reload
1594 * interval of half the target duration. */
1595 ✗ reload_interval = v->target_duration / 2;
1596 }
1597
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 95 if (v->cur_seq_no < v->start_seq_no) {
1598 ✗ av_log(v->parent, AV_LOG_WARNING,
1599 "skipping %"PRId64" segments ahead, expired from playlists\n",
1600 ✗ v->start_seq_no - v->cur_seq_no);
1601 ✗ v->cur_seq_no = v->start_seq_no;
1602 }
1603
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 95 if (v->cur_seq_no > v->last_seq_no) {
1604 63 v->last_seq_no = v->cur_seq_no;
1605 63 v->m3u8_hold_counters = 0;
1606
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 32 } else if (v->last_seq_no == v->cur_seq_no) {
1607 32 v->m3u8_hold_counters++;
1608
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 32 if (v->m3u8_hold_counters >= c->m3u8_hold_counters) {
1609 ✗ return AVERROR_EOF;
1610 }
1611 } else {
1612 ✗ av_log(v->parent, AV_LOG_WARNING, "The m3u8 list sequence may have been wrapped.\n");
1613 }
1614
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 95 if (v->cur_seq_no >= v->start_seq_no + v->n_segments) {
1615
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 34 if (v->finished || v->is_subtitle)
1616 34 return AVERROR_EOF;
1617 ✗ while (av_gettime_relative() - v->last_load_time < reload_interval) {
1618 ✗ if (ff_check_interrupt(c->interrupt_callback))
1619 ✗ return AVERROR_EXIT;
1620 ✗ av_usleep(100*1000);
1621 }
1622 /* Enough time has elapsed since the last reload */
1623 ✗ goto reload;
1624 }
1625
1626 }
1627 366 return ret;
1628 }
1629
1630 341 static int read_data_continuous(void *opaque, uint8_t *buf, int buf_size)
1631 {
1632 341 struct playlist *v = opaque;
1633 341 HLSContext *c = v->parent->priv_data;
1634 int ret;
1635 341 int just_opened = 0;
1636 341 int segment_retries = 0;
1637 struct segment *seg;
1638
1639
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 341 if (c->http_persistent && v->input_read_done) {
1640 ✗ ret = reload_playlist(v, c);
1641 ✗ if (ret < 0)
1642 ✗ return ret;
1643 }
1644
1645 341 v->input_read_done = 0;
1646
1647 59 restart:
1648 400 ret = reload_playlist(v, c);
1649
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 400 if (ret < 0)
1650 34 return ret;
1651
1652 366 seg = current_segment(v);
1653
1654
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 366 if (!v->input || (c->http_persistent && v->input_read_done)) {
1655 /* load/update Media Initialization Section, if any */
1656 61 ret = update_init_section(v, seg);
1657
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 61 if (ret)
1658 ✗ return ret;
1659
1660
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 61 if (c->http_multiple == 1 && v->input_next_requested) {
1661 ✗ FFSWAP(AVIOContext *, v->input, v->input_next);
1662 ✗ v->cur_seg_offset = 0;
1663 ✗ v->input_next_requested = 0;
1664 ✗ ret = 0;
1665 } else {
1666 61 ret = open_input(c, v, seg, &v->input);
1667 }
1668
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 61 if (ret < 0) {
1669 ✗ if (ff_check_interrupt(c->interrupt_callback))
1670 ✗ return AVERROR_EXIT;
1671 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1672 v->cur_seq_no,
1673 v->index);
1674 ✗ if (segment_retries >= c->seg_max_retry) {
1675 ✗ av_log(v->parent, AV_LOG_WARNING, "Segment %"PRId64" of playlist %d failed too many times, skipping\n",
1676 v->cur_seq_no,
1677 v->index);
1678 ✗ v->cur_seq_no++;
1679 ✗ segment_retries = 0;
1680 } else {
1681 ✗ segment_retries++;
1682 }
1683 ✗ goto restart;
1684 }
1685 61 segment_retries = 0;
1686 61 just_opened = 1;
1687 }
1688
1689
1/2
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 366 if (c->http_multiple == -1) {
1690 366 uint8_t *http_version_opt = NULL;
1691 366 int r = av_opt_get(v->input, "http_version", AV_OPT_SEARCH_CHILDREN, &http_version_opt);
1692
1/2
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 366 if (r >= 0) {
1693 ✗ c->http_multiple = (!strncmp((const char *)http_version_opt, "1.1", 3) || !strncmp((const char *)http_version_opt, "2.0", 3));
1694 ✗ av_freep(&http_version_opt);
1695 }
1696 }
1697
1698 366 seg = next_segment(v);
1699
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 366 if (c->http_multiple == 1 && !v->input_next_requested &&
1700 ✗ seg && seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1701 ✗ ret = open_input(c, v, seg, &v->input_next);
1702 ✗ if (ret < 0) {
1703 ✗ if (ff_check_interrupt(c->interrupt_callback))
1704 ✗ return AVERROR_EXIT;
1705 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment %"PRId64" of playlist %d\n",
1706 ✗ v->cur_seq_no + 1,
1707 v->index);
1708 } else {
1709 ✗ v->input_next_requested = 1;
1710 }
1711 }
1712
1713
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 366 if (v->init_sec_buf_read_offset < v->init_sec_data_len) {
1714 /* Push init section out first before first actual segment */
1715 ✗ int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
1716 ✗ memcpy(buf, v->init_sec_buf, copy_size);
1717 ✗ v->init_sec_buf_read_offset += copy_size;
1718 ✗ return copy_size;
1719 }
1720
1721 366 seg = current_segment(v);
1722 366 ret = read_from_url(v, seg, buf, buf_size);
1723
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 366 if (ret > 0) {
1724
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 307 if (just_opened && v->is_id3_timestamped != 0) {
1725 /* Intercept ID3 tags here, elementary audio streams are required
1726 * to convey timestamps using them in the beginning of each segment. */
1727 12 intercept_id3(v, buf, buf_size, &ret);
1728 }
1729
1730 307 return ret;
1731 }
1732
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 59 if (c->http_persistent &&
1733
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 59 seg->key_type == KEY_NONE && av_strstart(seg->url, "http", NULL)) {
1734 ✗ v->input_read_done = 1;
1735 } else {
1736 59 ff_format_io_close(v->parent, &v->input);
1737 }
1738 59 v->cur_seq_no++;
1739
1740 59 c->cur_seq_no = v->cur_seq_no;
1741
1742 59 goto restart;
1743 }
1744
1745 ✗ static int read_data_subtitle_segment(void *opaque, uint8_t *buf, int buf_size)
1746 {
1747 ✗ struct playlist *v = opaque;
1748 ✗ HLSContext *c = v->parent->priv_data;
1749 int ret;
1750 struct segment *seg;
1751
1752 ✗ if (!v->needed || v->cur_seq_no - v->start_seq_no >= v->n_segments) {
1753 ✗ return AVERROR_EOF;
1754 } else {
1755 ✗ seg = current_segment(v);
1756 }
1757
1758 ✗ if (!v->input) {
1759 ✗ ret = open_input(c, v, seg, &v->input);
1760 ✗ if (ret < 0) {
1761 ✗ if (ff_check_interrupt(c->interrupt_callback))
1762 ✗ return AVERROR_EXIT;
1763 ✗ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment of playlist %d\n",
1764 v->index);
1765 ✗ return ret;
1766 }
1767 }
1768
1769 ✗ return read_from_url(v, seg, buf, buf_size);
1770 }
1771
1772 ✗ static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
1773 int flags, AVDictionary **opts)
1774 {
1775 ✗ av_log(s, AV_LOG_ERROR,
1776 "A HLS playlist item '%s' referred to an external file '%s'. "
1777 "Opening this file was forbidden for security reasons\n",
1778 s->url, url);
1779 ✗ return AVERROR(EPERM);
1780 }
1781
1782 ✗ static int init_subtitle_context(struct playlist *pls)
1783 {
1784 ✗ HLSContext *c = pls->parent->priv_data;
1785 const AVInputFormat *in_fmt;
1786 ✗ AVDictionary *opts = NULL;
1787 int ret;
1788
1789 ✗ if (!(pls->ctx = avformat_alloc_context()))
1790 ✗ return AVERROR(ENOMEM);
1791
1792 ✗ pls->read_buffer = av_malloc(INITIAL_BUFFER_SIZE);
1793 ✗ if (!pls->read_buffer) {
1794 ✗ avformat_free_context(pls->ctx);
1795 ✗ pls->ctx = NULL;
1796 ✗ return AVERROR(ENOMEM);
1797 }
1798
1799 ✗ ffio_init_context(&pls->pb, pls->read_buffer, INITIAL_BUFFER_SIZE, 0, pls,
1800 read_data_subtitle_segment, NULL, NULL);
1801 ✗ pls->pb.pub.seekable = 0;
1802 ✗ pls->ctx->pb = &pls->pb.pub;
1803 ✗ pls->ctx->io_open = nested_io_open;
1804
1805 ✗ ret = ff_copy_whiteblacklists(pls->ctx, pls->parent);
1806 ✗ if (ret < 0)
1807 ✗ return ret;
1808
1809 ✗ in_fmt = av_find_input_format("webvtt");
1810 ✗ av_dict_copy(&opts, c->seg_format_opts, 0);
1811 ✗ ret = avformat_open_input(&pls->ctx, current_segment(pls)->url, in_fmt, &opts);
1812 ✗ av_dict_free(&opts);
1813
1814 ✗ return ret;
1815 }
1816
1817 ✗ static int read_subtitle_packet(struct playlist *v, AVPacket *pkt)
1818 {
1819 ✗ HLSContext *c = v->parent->priv_data;
1820 int ret;
1821
1822 ✗ restart:
1823 ✗ ret = reload_playlist(v, c);
1824 ✗ if (ret < 0)
1825 ✗ return ret;
1826
1827 ✗ if (v->input && !v->ctx)
1828 ✗ ff_format_io_close(v->parent, &v->input);
1829
1830 ✗ if (!v->input && !v->ctx) {
1831 ✗ ret = init_subtitle_context(v);
1832 ✗ if (ret < 0)
1833 ✗ return ret;
1834 }
1835
1836 ✗ ret = av_read_frame(v->ctx, v->pkt);
1837 ✗ if (!ret) {
1838 ✗ return ret;
1839 }
1840 ✗ ff_format_io_close(v->parent, &v->input);
1841 ✗ v->cur_seq_no++;
1842 ✗ c->cur_seq_no = v->cur_seq_no;
1843
1844 ✗ avformat_close_input(&v->ctx);
1845
1846 ✗ goto restart;
1847 }
1848
1849 ✗ static void add_renditions_to_variant(HLSContext *c, struct variant *var,
1850 enum AVMediaType type, const char *group_id)
1851 {
1852 int i;
1853
1854 ✗ for (i = 0; i < c->n_renditions; i++) {
1855 ✗ struct rendition *rend = c->renditions[i];
1856
1857 ✗ if (rend->type == type && !strcmp(rend->group_id, group_id)) {
1858
1859 ✗ if (rend->playlist)
1860 /* rendition is an external playlist
1861 * => add the playlist to the variant */
1862 ✗ dynarray_add(&var->playlists, &var->n_playlists, rend->playlist);
1863 else
1864 /* rendition is part of the variant main Media Playlist
1865 * => add the rendition to the main Media Playlist */
1866 ✗ dynarray_add(&var->playlists[0]->renditions,
1867 &var->playlists[0]->n_renditions,
1868 rend);
1869 }
1870 }
1871 ✗ }
1872
1873 36 static void add_metadata_from_renditions(AVFormatContext *s, struct playlist *pls,
1874 enum AVMediaType type)
1875 {
1876 36 int rend_idx = 0;
1877 int i;
1878
1879
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 60 for (i = 0; i < pls->n_main_streams; i++) {
1880 36 AVStream *st = pls->main_streams[i];
1881
1882
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 36 if (st->codecpar->codec_type != type)
1883 24 continue;
1884
1885
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 12 for (; rend_idx < pls->n_renditions; rend_idx++) {
1886 ✗ struct rendition *rend = pls->renditions[rend_idx];
1887
1888 ✗ if (rend->type != type)
1889 ✗ continue;
1890
1891 ✗ if (rend->language[0])
1892 ✗ av_dict_set(&st->metadata, "language", rend->language, 0);
1893 ✗ if (rend->name[0])
1894 ✗ av_dict_set(&st->metadata, "comment", rend->name, 0);
1895
1896 ✗ st->disposition |= rend->disposition;
1897 }
1898
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 12 if (rend_idx >=pls->n_renditions)
1899 12 break;
1900 }
1901 36 }
1902
1903 /* if timestamp was in valid range: returns 1 and sets seq_no
1904 * if not: returns 0 and sets seq_no to closest segment */
1905 ✗ static int find_timestamp_in_playlist(HLSContext *c, struct playlist *pls,
1906 int64_t timestamp, int64_t *seq_no,
1907 int64_t *seg_start_ts)
1908 {
1909 int i;
1910 ✗ int64_t pos = c->first_timestamp == AV_NOPTS_VALUE ?
1911 ✗ 0 : c->first_timestamp;
1912
1913 ✗ if (timestamp < pos) {
1914 ✗ *seq_no = pls->start_seq_no;
1915 ✗ return 0;
1916 }
1917
1918 ✗ for (i = 0; i < pls->n_segments; i++) {
1919 ✗ int64_t diff = pos + pls->segments[i]->duration - timestamp;
1920 ✗ if (diff > 0) {
1921 ✗ *seq_no = pls->start_seq_no + i;
1922 ✗ if (seg_start_ts) {
1923 ✗ *seg_start_ts = pos;
1924 }
1925 ✗ return 1;
1926 }
1927 ✗ pos += pls->segments[i]->duration;
1928 }
1929
1930 ✗ *seq_no = pls->start_seq_no + pls->n_segments - 1;
1931
1932 ✗ return 0;
1933 }
1934
1935 12 static int64_t select_cur_seq_no(HLSContext *c, struct playlist *pls)
1936 {
1937 int64_t seq_no;
1938
1939
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 12 if (!pls->finished && !c->first_packet &&
1940 ✗ av_gettime_relative() - pls->last_load_time >= default_reload_interval(pls))
1941 /* reload the playlist since it was suspended */
1942 ✗ parse_playlist(c, pls->url, pls, NULL);
1943
1944 /* If playback is already in progress (we are just selecting a new
1945 * playlist) and this is a complete file, find the matching segment
1946 * by counting durations. */
1947
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 12 if (pls->finished && c->cur_timestamp != AV_NOPTS_VALUE) {
1948 ✗ find_timestamp_in_playlist(c, pls, c->cur_timestamp, &seq_no, NULL);
1949 ✗ return seq_no;
1950 }
1951
1952
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 12 if (!pls->finished) {
1953
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 1 if (!c->first_packet && /* we are doing a segment selection during playback */
1954 ✗ c->cur_seq_no >= pls->start_seq_no &&
1955 ✗ c->cur_seq_no < pls->start_seq_no + pls->n_segments)
1956 /* While spec 3.4.3 says that we cannot assume anything about the
1957 * content at the same sequence number on different playlists,
1958 * in practice this seems to work and doing it otherwise would
1959 * require us to download a segment to inspect its timestamps. */
1960 ✗ return c->cur_seq_no;
1961
1962 /* If this is a live stream, start live_start_index segments from the
1963 * start or end */
1964
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 1 if (c->live_start_index < 0)
1965 1 seq_no = pls->start_seq_no + FFMAX(pls->n_segments +
1966 c->live_start_index, 0);
1967 else
1968 ✗ seq_no = pls->start_seq_no + FFMIN(c->live_start_index,
1969 pls->n_segments - 1);
1970
1971 /* If #EXT-X-START in playlist, need to recalculate */
1972
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 1 if (pls->time_offset_flag && c->prefer_x_start) {
1973 int64_t start_timestamp;
1974 ✗ int64_t playlist_duration = 0;
1975 ✗ int64_t cur_timestamp = c->cur_timestamp == AV_NOPTS_VALUE ? 0 :
1976 c->cur_timestamp;
1977
1978 ✗ for (int i = 0; i < pls->n_segments; i++)
1979 ✗ playlist_duration += pls->segments[i]->duration;
1980
1981 /* If the absolute value of TIME-OFFSET exceeds
1982 * the duration of the playlist, it indicates either the end of the
1983 * playlist (if positive) or the beginning of the playlist (if
1984 * negative). */
1985 ✗ if (pls->start_time_offset >=0 &&
1986 ✗ pls->start_time_offset > playlist_duration)
1987 ✗ start_timestamp = cur_timestamp + playlist_duration;
1988 ✗ else if (pls->start_time_offset >= 0 &&
1989 ✗ pls->start_time_offset <= playlist_duration)
1990 ✗ start_timestamp = cur_timestamp + pls->start_time_offset;
1991 ✗ else if (pls->start_time_offset < 0 &&
1992 ✗ pls->start_time_offset < -playlist_duration)
1993 ✗ start_timestamp = cur_timestamp;
1994 ✗ else if (pls->start_time_offset < 0 &&
1995 ✗ pls->start_time_offset > -playlist_duration)
1996 ✗ start_timestamp = cur_timestamp + playlist_duration +
1997 ✗ pls->start_time_offset;
1998 else
1999 ✗ start_timestamp = cur_timestamp;
2000
2001 ✗ find_timestamp_in_playlist(c, pls, start_timestamp, &seq_no, NULL);
2002 }
2003 1 return seq_no;
2004 }
2005
2006 /* Otherwise just start on the first segment. */
2007 11 return pls->start_seq_no;
2008 }
2009
2010 12 static void add_stream_to_programs(AVFormatContext *s, struct playlist *pls, AVStream *stream)
2011 {
2012 12 HLSContext *c = s->priv_data;
2013 int i, j;
2014 12 int bandwidth = -1;
2015
2016
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 24 for (i = 0; i < c->n_variants; i++) {
2017 12 struct variant *v = c->variants[i];
2018
2019
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 24 for (j = 0; j < v->n_playlists; j++) {
2020
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 12 if (v->playlists[j] != pls)
2021 ✗ continue;
2022
2023 12 av_program_add_stream_index(s, i, stream->index);
2024
2025
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 12 if (bandwidth < 0)
2026 12 bandwidth = v->bandwidth;
2027 ✗ else if (bandwidth != v->bandwidth)
2028 ✗ bandwidth = -1; /* stream in multiple variants with different bandwidths */
2029 }
2030 }
2031
2032
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 12 if (bandwidth >= 0)
2033 12 av_dict_set_int(&stream->metadata, "variant_bitrate", bandwidth, 0);
2034 12 }
2035
2036 22 static int set_stream_info_from_input_stream(AVStream *st, struct playlist *pls, AVStream *ist)
2037 {
2038 int err;
2039
2040 22 err = avcodec_parameters_copy(st->codecpar, ist->codecpar);
2041
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 22 if (err < 0)
2042 ✗ return err;
2043
2044
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 22 if (pls->is_id3_timestamped) /* custom timestamps via id3 */
2045 ✗ avpriv_set_pts_info(st, 33, 1, MPEG_TIME_BASE);
2046 else
2047 22 avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
2048
2049 // copy disposition
2050 22 st->disposition = ist->disposition;
2051
2052 22 av_dict_copy(&st->metadata, ist->metadata, 0);
2053
2054 22 ffstream(st)->need_context_update = 1;
2055
2056 22 return 0;
2057 }
2058
2059 /* add new subdemuxer streams to our context, if any */
2060 6369 static int update_streams_from_subdemuxer(AVFormatContext *s, struct playlist *pls)
2061 {
2062 int err;
2063
2064
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 6381 while (pls->n_main_streams < pls->ctx->nb_streams) {
2065 12 int ist_idx = pls->n_main_streams;
2066 12 AVStream *st = avformat_new_stream(s, NULL);
2067 12 AVStream *ist = pls->ctx->streams[ist_idx];
2068
2069
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 12 if (!st)
2070 ✗ return AVERROR(ENOMEM);
2071
2072 12 st->id = pls->index;
2073 12 dynarray_add(&pls->main_streams, &pls->n_main_streams, st);
2074
2075 12 add_stream_to_programs(s, pls, st);
2076
2077 12 err = set_stream_info_from_input_stream(st, pls, ist);
2078
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 12 if (err < 0)
2079 ✗ return err;
2080 }
2081
2082 6369 return 0;
2083 }
2084
2085 23 static void update_noheader_flag(AVFormatContext *s)
2086 {
2087 23 HLSContext *c = s->priv_data;
2088 23 int flag_needed = 0;
2089 int i;
2090
2091
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 35 for (i = 0; i < c->n_playlists; i++) {
2092 23 struct playlist *pls = c->playlists[i];
2093
2094
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 23 if (pls->has_noheader_flag) {
2095 11 flag_needed = 1;
2096 11 break;
2097 }
2098 }
2099
2100
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 23 if (flag_needed)
2101 11 s->ctx_flags |= AVFMTCTX_NOHEADER;
2102 else
2103 12 s->ctx_flags &= ~AVFMTCTX_NOHEADER;
2104 23 }
2105
2106 12 static int hls_close(AVFormatContext *s)
2107 {
2108 12 HLSContext *c = s->priv_data;
2109
2110 12 free_playlist_list(c);
2111 12 free_variant_list(c);
2112 12 free_rendition_list(c);
2113
2114
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 12 if (c->crypto_ctx.aes_ctx)
2115 ✗ av_free(c->crypto_ctx.aes_ctx);
2116
2117 12 av_dict_free(&c->avio_opts);
2118 12 ff_format_io_close(c->ctx, &c->playlist_pb);
2119
2120 12 return 0;
2121 }
2122
2123 12 static int hls_read_header(AVFormatContext *s)
2124 {
2125 12 HLSContext *c = s->priv_data;
2126 12 int ret = 0, i;
2127 12 int64_t highest_cur_seq_no = 0;
2128
2129 12 c->ctx = s;
2130 12 c->interrupt_callback = &s->interrupt_callback;
2131
2132 12 c->first_packet = 1;
2133 12 c->first_timestamp = AV_NOPTS_VALUE;
2134 12 c->cur_timestamp = AV_NOPTS_VALUE;
2135
2136
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 12 if ((ret = ffio_copy_url_options(s->pb, &c->avio_opts)) < 0)
2137 ✗ return ret;
2138
2139 /* XXX: Some HLS servers don't like being sent the range header,
2140 in this case, need to setting http_seekable = 0 to disable
2141 the range header */
2142 12 av_dict_set_int(&c->avio_opts, "seekable", c->http_seekable, 0);
2143
2144
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 12 if ((ret = parse_playlist(c, s->url, NULL, s->pb)) < 0)
2145 ✗ return ret;
2146
2147
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 12 if (c->n_variants == 0) {
2148 ✗ av_log(s, AV_LOG_WARNING, "Empty playlist\n");
2149 ✗ return AVERROR_EOF;
2150 }
2151 /* If the playlist only contained playlists (Master Playlist),
2152 * parse each individual playlist. */
2153
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 12 if (c->n_playlists > 1 || c->playlists[0]->n_segments == 0) {
2154 ✗ for (i = 0; i < c->n_playlists; i++) {
2155 ✗ struct playlist *pls = c->playlists[i];
2156 ✗ pls->m3u8_hold_counters = 0;
2157 ✗ if ((ret = parse_playlist(c, pls->url, pls, NULL)) < 0) {
2158 ✗ av_log(s, AV_LOG_WARNING, "parse_playlist error %s [%s]\n", av_err2str(ret), pls->url);
2159 ✗ pls->broken = 1;
2160 ✗ if (c->n_playlists > 1)
2161 ✗ continue;
2162 ✗ return ret;
2163 }
2164 }
2165 }
2166
2167
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 24 for (i = 0; i < c->n_variants; i++) {
2168
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 12 if (c->variants[i]->playlists[0]->n_segments == 0) {
2169 ✗ av_log(s, AV_LOG_WARNING, "Empty segment [%s]\n", c->variants[i]->playlists[0]->url);
2170 ✗ c->variants[i]->playlists[0]->broken = 1;
2171 }
2172 }
2173
2174 /* If this isn't a live stream, calculate the total duration of the
2175 * stream. */
2176
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 12 if (c->variants[0]->playlists[0]->finished) {
2177 11 int64_t duration = 0;
2178
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 71 for (i = 0; i < c->variants[0]->playlists[0]->n_segments; i++)
2179 60 duration += c->variants[0]->playlists[0]->segments[i]->duration;
2180 11 s->duration = duration;
2181 }
2182
2183 /* Associate renditions with variants */
2184
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 24 for (i = 0; i < c->n_variants; i++) {
2185 12 struct variant *var = c->variants[i];
2186
2187
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 12 if (var->audio_group[0])
2188 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_AUDIO, var->audio_group);
2189
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 12 if (var->video_group[0])
2190 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_VIDEO, var->video_group);
2191
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 12 if (var->subtitles_group[0])
2192 ✗ add_renditions_to_variant(c, var, AVMEDIA_TYPE_SUBTITLE, var->subtitles_group);
2193 }
2194
2195 /* Create a program for each variant */
2196
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 24 for (i = 0; i < c->n_variants; i++) {
2197 12 struct variant *v = c->variants[i];
2198 AVProgram *program;
2199
2200 12 program = av_new_program(s, i);
2201
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 12 if (!program)
2202 ✗ return AVERROR(ENOMEM);
2203 12 av_dict_set_int(&program->metadata, "variant_bitrate", v->bandwidth, 0);
2204 }
2205
2206 /* Select the starting segments */
2207
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 24 for (i = 0; i < c->n_playlists; i++) {
2208 12 struct playlist *pls = c->playlists[i];
2209
2210
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 12 if (pls->n_segments == 0)
2211 ✗ continue;
2212
2213 12 pls->cur_seq_no = select_cur_seq_no(c, pls);
2214 12 highest_cur_seq_no = FFMAX(highest_cur_seq_no, pls->cur_seq_no);
2215 }
2216
2217 12 av_dict_set(&c->seg_format_opts, "prefer_hls_mpegts_pts", "1", 0);
2218
2219 /* Open the demuxer for each playlist */
2220
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 24 for (i = 0; i < c->n_playlists; i++) {
2221 12 struct playlist *pls = c->playlists[i];
2222 12 const AVInputFormat *in_fmt = NULL;
2223 char *url;
2224 12 AVDictionary *options = NULL;
2225 12 struct segment *seg = NULL;
2226
2227
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 12 if (!(pls->ctx = avformat_alloc_context()))
2228 ✗ return AVERROR(ENOMEM);
2229
2230
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 12 if (pls->n_segments == 0)
2231 ✗ continue;
2232
2233 12 pls->index = i;
2234 12 pls->needed = 1;
2235 12 pls->parent = s;
2236
2237 /*
2238 * If this is a live stream and this playlist looks like it is one segment
2239 * behind, try to sync it up so that every substream starts at the same
2240 * time position (so e.g. avformat_find_stream_info() will see packets from
2241 * all active streams within the first few seconds). This is not very generic,
2242 * though, as the sequence numbers are technically independent.
2243 */
2244
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 12 if (!pls->finished && pls->cur_seq_no == highest_cur_seq_no - 1 &&
2245 ✗ highest_cur_seq_no < pls->start_seq_no + pls->n_segments) {
2246 ✗ pls->cur_seq_no = highest_cur_seq_no;
2247 }
2248
2249 12 pls->read_buffer = av_malloc(INITIAL_BUFFER_SIZE);
2250
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 12 if (!pls->read_buffer){
2251 ✗ avformat_free_context(pls->ctx);
2252 ✗ pls->ctx = NULL;
2253 ✗ return AVERROR(ENOMEM);
2254 }
2255
2256
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 12 if (pls->is_subtitle)
2257 ✗ ffio_init_context(&pls->pb, (unsigned char*)av_strdup("WEBVTT\n"), (int)strlen("WEBVTT\n"), 0, pls,
2258 NULL, NULL, NULL);
2259 else
2260 12 ffio_init_context(&pls->pb, pls->read_buffer, INITIAL_BUFFER_SIZE, 0, pls,
2261 read_data_continuous, NULL, NULL);
2262
2263 /*
2264 * If encryption scheme is SAMPLE-AES, try to read ID3 tags of
2265 * external audio track that contains audio setup information
2266 */
2267 12 seg = current_segment(pls);
2268
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 12 if (seg && seg->key_type == KEY_SAMPLE_AES && pls->n_renditions > 0 &&
2269 ✗ pls->renditions[0]->type == AVMEDIA_TYPE_AUDIO) {
2270 uint8_t buf[HLS_MAX_ID3_TAGS_DATA_LEN];
2271 ✗ if ((ret = avio_read(&pls->pb.pub, buf, HLS_MAX_ID3_TAGS_DATA_LEN)) < 0) {
2272 /* Fail if error was not end of file */
2273 ✗ if (ret != AVERROR_EOF) {
2274 ✗ avformat_free_context(pls->ctx);
2275 ✗ pls->ctx = NULL;
2276 ✗ return ret;
2277 }
2278 }
2279 ✗ ret = 0;
2280 /* Reset reading */
2281 ✗ ff_format_io_close(pls->parent, &pls->input);
2282 ✗ pls->input = NULL;
2283 ✗ pls->input_read_done = 0;
2284 ✗ ff_format_io_close(pls->parent, &pls->input_next);
2285 ✗ pls->input_next = NULL;
2286 ✗ pls->input_next_requested = 0;
2287 ✗ pls->cur_seg_offset = 0;
2288 ✗ pls->cur_init_section = NULL;
2289 /* Reset EOF flag */
2290 ✗ pls->pb.pub.eof_reached = 0;
2291 /* Clear any buffered data */
2292 ✗ pls->pb.pub.buf_end = pls->pb.pub.buf_ptr = pls->pb.pub.buffer;
2293 /* Reset the position */
2294 ✗ pls->pb.pub.pos = 0;
2295 }
2296
2297 /*
2298 * If encryption scheme is SAMPLE-AES and audio setup information is present in external audio track,
2299 * use that information to find the media format, otherwise probe input data
2300 */
2301 12 seg = current_segment(pls);
2302
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 12 if (seg && seg->key_type == KEY_SAMPLE_AES && pls->is_id3_timestamped &&
2303 ✗ pls->audio_setup_info.codec_id != AV_CODEC_ID_NONE) {
2304 av_assert1(pls->audio_setup_info.codec_id == AV_CODEC_ID_AAC ||
2305 pls->audio_setup_info.codec_id == AV_CODEC_ID_AC3 ||
2306 pls->audio_setup_info.codec_id == AV_CODEC_ID_EAC3);
2307 // Keep this list in sync with ff_hls_senc_read_audio_setup_info()
2308 ✗ in_fmt = av_find_input_format(pls->audio_setup_info.codec_id == AV_CODEC_ID_AAC ? "aac" :
2309 ✗ pls->audio_setup_info.codec_id == AV_CODEC_ID_AC3 ? "ac3" : "eac3");
2310 } else {
2311
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 12 pls->ctx->probesize = s->probesize > 0 ? s->probesize : 1024 * 4;
2312
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 12 pls->ctx->max_analyze_duration = s->max_analyze_duration > 0 ? s->max_analyze_duration : 4 * AV_TIME_BASE;
2313 12 pls->ctx->interrupt_callback = s->interrupt_callback;
2314 12 url = av_strdup(pls->segments[0]->url);
2315 12 ret = av_probe_input_buffer(&pls->pb.pub, &in_fmt, url, NULL, 0, 0);
2316
2317
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 77 for (int n = 0; n < pls->n_segments; n++)
2318
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 65 if (ret >= 0)
2319 65 ret = test_segment(s, in_fmt, pls, pls->segments[n]);
2320
2321
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 12 if (ret < 0) {
2322 /* Free the ctx - it isn't initialized properly at this point,
2323 * so avformat_close_input shouldn't be called. If
2324 * avformat_open_input fails below, it frees and zeros the
2325 * context, so it doesn't need any special treatment like this. */
2326 ✗ av_log(s, AV_LOG_ERROR, "Error when loading first segment '%s'\n", url);
2327 ✗ avformat_free_context(pls->ctx);
2328 ✗ pls->ctx = NULL;
2329 ✗ av_free(url);
2330 ✗ return ret;
2331 }
2332 12 av_free(url);
2333 }
2334
2335 12 seg = current_segment(pls);
2336
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 12 if (seg && seg->key_type == KEY_SAMPLE_AES) {
2337 ✗ if (strstr(in_fmt->name, "mov")) {
2338 char key[33];
2339 ✗ ff_data_to_hex(key, pls->key, sizeof(pls->key), 0);
2340 ✗ av_dict_set(&options, "decryption_key", key, 0);
2341 ✗ } else if (!c->crypto_ctx.aes_ctx) {
2342 ✗ c->crypto_ctx.aes_ctx = av_aes_alloc();
2343 ✗ if (!c->crypto_ctx.aes_ctx) {
2344 ✗ avformat_free_context(pls->ctx);
2345 ✗ pls->ctx = NULL;
2346 ✗ return AVERROR(ENOMEM);
2347 }
2348 }
2349 }
2350
2351 12 pls->ctx->pb = &pls->pb.pub;
2352 12 pls->ctx->io_open = nested_io_open;
2353 12 pls->ctx->flags |= s->flags & ~AVFMT_FLAG_CUSTOM_IO;
2354
2355
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 12 if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
2356 ✗ return ret;
2357
2358 12 av_dict_copy(&options, c->seg_format_opts, 0);
2359
2360 12 ret = avformat_open_input(&pls->ctx, pls->segments[0]->url, in_fmt, &options);
2361 12 av_dict_free(&options);
2362
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 12 if (ret < 0)
2363 ✗ return ret;
2364
2365
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 12 if (pls->id3_deferred_extra && pls->ctx->nb_streams == 1) {
2366 ✗ ff_id3v2_parse_apic(pls->ctx, pls->id3_deferred_extra);
2367 ✗ avformat_queue_attached_pictures(pls->ctx);
2368 ✗ ff_id3v2_parse_priv(pls->ctx, pls->id3_deferred_extra);
2369 ✗ ff_id3v2_free_extra_meta(&pls->id3_deferred_extra);
2370 }
2371
2372
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 12 if (pls->is_id3_timestamped == -1)
2373 ✗ av_log(s, AV_LOG_WARNING, "No expected HTTP requests have been made\n");
2374
2375 /*
2376 * For ID3 timestamped raw audio streams we need to detect the packet
2377 * durations to calculate timestamps in fill_timing_for_id3_timestamped_stream(),
2378 * but for other streams we can rely on our user calling avformat_find_stream_info()
2379 * on us if they want to.
2380 */
2381
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 12 if (pls->is_id3_timestamped || (pls->n_renditions > 0 && pls->renditions[0]->type == AVMEDIA_TYPE_AUDIO)) {
2382 ✗ seg = current_segment(pls);
2383 ✗ if (seg && seg->key_type == KEY_SAMPLE_AES && pls->audio_setup_info.setup_data_length > 0 &&
2384 ✗ pls->ctx->nb_streams == 1)
2385 ✗ ret = ff_hls_senc_parse_audio_setup_info(pls->ctx->streams[0], &pls->audio_setup_info);
2386 else
2387 ✗ ret = avformat_find_stream_info(pls->ctx, NULL);
2388
2389 ✗ if (ret < 0)
2390 ✗ return ret;
2391 }
2392
2393 12 pls->has_noheader_flag = !!(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER);
2394
2395 /* Create new AVStreams for each stream in this playlist */
2396 12 ret = update_streams_from_subdemuxer(s, pls);
2397
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 12 if (ret < 0)
2398 ✗ return ret;
2399
2400 /*
2401 * Copy any metadata from playlist to main streams, but do not set
2402 * event flags.
2403 */
2404
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 12 if (pls->n_main_streams)
2405 12 av_dict_copy(&pls->main_streams[0]->metadata, pls->ctx->metadata, 0);
2406
2407
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 12 if (pls->is_subtitle) {
2408 ✗ avformat_free_context(pls->ctx);
2409 ✗ pls->ctx = NULL;
2410 ✗ pls->needed = 0;
2411 ✗ pls->main_streams[0]->discard = AVDISCARD_ALL;
2412 }
2413
2414 12 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_AUDIO);
2415 12 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_VIDEO);
2416 12 add_metadata_from_renditions(s, pls, AVMEDIA_TYPE_SUBTITLE);
2417 }
2418
2419 12 update_noheader_flag(s);
2420
2421 12 return 0;
2422 }
2423
2424 6368 static int recheck_discard_flags(AVFormatContext *s, int first)
2425 {
2426 6368 HLSContext *c = s->priv_data;
2427 6368 int i, changed = 0;
2428 int cur_needed;
2429
2430 /* Check if any new streams are needed */
2431
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 12736 for (i = 0; i < c->n_playlists; i++) {
2432 6368 struct playlist *pls = c->playlists[i];
2433
2434 6368 cur_needed = playlist_needed(c->playlists[i]);
2435
2436
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 6368 if (pls->broken) {
2437 ✗ continue;
2438 }
2439
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 6368 if (cur_needed && !pls->needed) {
2440 ✗ pls->needed = 1;
2441 ✗ changed = 1;
2442 ✗ pls->cur_seq_no = select_cur_seq_no(c, pls);
2443 ✗ pls->pb.pub.eof_reached = 0;
2444 ✗ if (c->cur_timestamp != AV_NOPTS_VALUE) {
2445 /* catch up */
2446 ✗ pls->seek_timestamp = c->cur_timestamp;
2447 ✗ pls->seek_flags = AVSEEK_FLAG_ANY;
2448 ✗ pls->seek_stream_index = -1;
2449 }
2450 ✗ av_log(s, AV_LOG_INFO, "Now receiving playlist %d, segment %"PRId64"\n", i, pls->cur_seq_no);
2451
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 6368 } else if (first && !cur_needed && pls->needed) {
2452 ✗ ff_format_io_close(pls->parent, &pls->input);
2453 ✗ pls->input_read_done = 0;
2454 ✗ ff_format_io_close(pls->parent, &pls->input_next);
2455 ✗ pls->input_next_requested = 0;
2456 ✗ if (pls->is_subtitle)
2457 ✗ avformat_close_input(&pls->ctx);
2458 ✗ pls->needed = 0;
2459 ✗ changed = 1;
2460 ✗ av_log(s, AV_LOG_INFO, "No longer receiving playlist %d\n", i);
2461 }
2462 }
2463 6368 return changed;
2464 }
2465
2466 ✗ static void fill_timing_for_id3_timestamped_stream(struct playlist *pls)
2467 {
2468 ✗ if (pls->id3_offset >= 0) {
2469 ✗ pls->pkt->dts = pls->id3_mpegts_timestamp +
2470 ✗ av_rescale_q(pls->id3_offset,
2471 ✗ pls->ctx->streams[pls->pkt->stream_index]->time_base,
2472 ✗ MPEG_TIME_BASE_Q);
2473 ✗ if (pls->pkt->duration)
2474 ✗ pls->id3_offset += pls->pkt->duration;
2475 else
2476 ✗ pls->id3_offset = -1;
2477 } else {
2478 /* there have been packets with unknown duration
2479 * since the last id3 tag, should not normally happen */
2480 ✗ pls->pkt->dts = AV_NOPTS_VALUE;
2481 }
2482
2483 ✗ if (pls->pkt->duration)
2484 ✗ pls->pkt->duration = av_rescale_q(pls->pkt->duration,
2485 ✗ pls->ctx->streams[pls->pkt->stream_index]->time_base,
2486 ✗ MPEG_TIME_BASE_Q);
2487
2488 ✗ pls->pkt->pts = AV_NOPTS_VALUE;
2489 ✗ }
2490
2491 12 static AVRational get_timebase(struct playlist *pls)
2492 {
2493
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 12 if (pls->is_id3_timestamped)
2494 ✗ return MPEG_TIME_BASE_Q;
2495
2496 12 return pls->ctx->streams[pls->pkt->stream_index]->time_base;
2497 }
2498
2499 ✗ static int compare_ts_with_wrapdetect(int64_t ts_a, struct playlist *pls_a,
2500 int64_t ts_b, struct playlist *pls_b)
2501 {
2502 ✗ int64_t scaled_ts_a = av_rescale_q(ts_a, get_timebase(pls_a), MPEG_TIME_BASE_Q);
2503 ✗ int64_t scaled_ts_b = av_rescale_q(ts_b, get_timebase(pls_b), MPEG_TIME_BASE_Q);
2504
2505 ✗ return av_compare_mod(scaled_ts_a, scaled_ts_b, 1LL << 33);
2506 }
2507
2508 6368 static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
2509 {
2510 6368 HLSContext *c = s->priv_data;
2511 6368 int ret, i, minplaylist = -1;
2512
2513 6368 recheck_discard_flags(s, c->first_packet);
2514 6368 c->first_packet = 0;
2515
2516
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 12736 for (i = 0; i < c->n_playlists; i++) {
2517 6368 struct playlist *pls = c->playlists[i];
2518 /* Make sure we've got one buffered packet from each open playlist
2519 * stream */
2520
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 6368 if (pls->needed && !pls->pkt->data) {
2521 ✗ while (1) {
2522 int64_t ts_diff;
2523 AVRational tb;
2524 6368 struct segment *seg = NULL;
2525
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 6368 if (pls->is_subtitle)
2526 ✗ ret = read_subtitle_packet(pls, pls->pkt);
2527 else
2528 6368 ret = av_read_frame(pls->ctx, pls->pkt);
2529
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 6368 if (ret < 0) {
2530
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 11 if (!avio_feof(&pls->pb.pub) && ret != AVERROR_EOF)
2531 ✗ return ret;
2532 6368 break;
2533 } else {
2534 /* stream_index check prevents matching picture attachments etc. */
2535
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 6357 if (pls->is_id3_timestamped && pls->pkt->stream_index == 0) {
2536 /* audio elementary streams are id3 timestamped */
2537 ✗ fill_timing_for_id3_timestamped_stream(pls);
2538 }
2539
2540
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 6357 if (c->first_timestamp == AV_NOPTS_VALUE &&
2541
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 12 pls->pkt->dts != AV_NOPTS_VALUE)
2542 12 c->first_timestamp = av_rescale_q(pls->pkt->dts,
2543 12 get_timebase(pls), AV_TIME_BASE_Q);
2544 }
2545
2546 6357 seg = current_segment(pls);
2547
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 6357 if (seg && seg->key_type == KEY_SAMPLE_AES && !strstr(pls->ctx->iformat->name, "mov")) {
2548 ✗ enum AVCodecID codec_id = pls->ctx->streams[pls->pkt->stream_index]->codecpar->codec_id;
2549 ✗ memcpy(c->crypto_ctx.iv, seg->iv, sizeof(seg->iv));
2550 ✗ memcpy(c->crypto_ctx.key, pls->key, sizeof(pls->key));
2551 ✗ ff_hls_senc_decrypt_frame(codec_id, &c->crypto_ctx, pls->pkt);
2552 }
2553
2554
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 6357 if (pls->seek_timestamp == AV_NOPTS_VALUE)
2555 6357 break;
2556
2557 ✗ if (pls->seek_stream_index < 0 ||
2558 ✗ pls->seek_stream_index == pls->pkt->stream_index) {
2559
2560 ✗ if (pls->pkt->dts == AV_NOPTS_VALUE) {
2561 ✗ pls->seek_timestamp = AV_NOPTS_VALUE;
2562 ✗ break;
2563 }
2564
2565 ✗ tb = get_timebase(pls);
2566 ✗ ts_diff = av_rescale_rnd(pls->pkt->dts, AV_TIME_BASE,
2567 ✗ tb.den, AV_ROUND_DOWN) -
2568 ✗ pls->seek_timestamp;
2569 ✗ if (ts_diff >= 0 && (pls->seek_flags & AVSEEK_FLAG_ANY ||
2570 ✗ pls->pkt->flags & AV_PKT_FLAG_KEY)) {
2571 ✗ pls->seek_timestamp = AV_NOPTS_VALUE;
2572 ✗ break;
2573 }
2574 }
2575 ✗ av_packet_unref(pls->pkt);
2576 }
2577 }
2578 /* Check if this stream has the packet with the lowest dts */
2579
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 6368 if (pls->pkt->data) {
2580 6357 struct playlist *minpls = minplaylist < 0 ?
2581
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 6357 NULL : c->playlists[minplaylist];
2582
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 6357 if (minplaylist < 0) {
2583 6357 minplaylist = i;
2584 } else {
2585 ✗ int64_t dts = pls->pkt->dts;
2586 ✗ int64_t mindts = minpls->pkt->dts;
2587
2588 ✗ if (dts == AV_NOPTS_VALUE ||
2589 ✗ (mindts != AV_NOPTS_VALUE && compare_ts_with_wrapdetect(dts, pls, mindts, minpls) < 0))
2590 ✗ minplaylist = i;
2591 }
2592 }
2593 }
2594
2595 /* If we got a packet, return it */
2596
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 6368 if (minplaylist >= 0) {
2597 6357 struct playlist *pls = c->playlists[minplaylist];
2598 AVStream *ist;
2599 AVStream *st;
2600
2601 6357 ret = update_streams_from_subdemuxer(s, pls);
2602
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 6357 if (ret < 0) {
2603 ✗ av_packet_unref(pls->pkt);
2604 ✗ return ret;
2605 }
2606
2607 // If sub-demuxer reports updated metadata, copy it to the first stream
2608 // and set its AVSTREAM_EVENT_FLAG_METADATA_UPDATED flag.
2609
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 6357 if (pls->ctx->event_flags & AVFMT_EVENT_FLAG_METADATA_UPDATED) {
2610 ✗ if (pls->n_main_streams) {
2611 ✗ st = pls->main_streams[0];
2612 ✗ av_dict_copy(&st->metadata, pls->ctx->metadata, 0);
2613 ✗ st->event_flags |= AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
2614 }
2615 ✗ pls->ctx->event_flags &= ~AVFMT_EVENT_FLAG_METADATA_UPDATED;
2616 }
2617
2618 /* check if noheader flag has been cleared by the subdemuxer */
2619
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 6357 if (pls->has_noheader_flag && !(pls->ctx->ctx_flags & AVFMTCTX_NOHEADER)) {
2620 11 pls->has_noheader_flag = 0;
2621 11 update_noheader_flag(s);
2622 }
2623
2624
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 6357 if (pls->pkt->stream_index >= pls->n_main_streams) {
2625 ✗ av_log(s, AV_LOG_ERROR, "stream index inconsistency: index %d, %d main streams, %d subdemuxer streams\n",
2626 ✗ pls->pkt->stream_index, pls->n_main_streams, pls->ctx->nb_streams);
2627 ✗ av_packet_unref(pls->pkt);
2628 ✗ return AVERROR_BUG;
2629 }
2630
2631 6357 ist = pls->ctx->streams[pls->pkt->stream_index];
2632 6357 st = pls->main_streams[pls->pkt->stream_index];
2633
2634 6357 av_packet_move_ref(pkt, pls->pkt);
2635 6357 pkt->stream_index = st->index;
2636
2637
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 6357 if (pkt->dts != AV_NOPTS_VALUE)
2638 6357 c->cur_timestamp = av_rescale_q(pkt->dts,
2639 ist->time_base,
2640 6357 AV_TIME_BASE_Q);
2641
2642 /* There may be more situations where this would be useful, but this at least
2643 * handles newly probed codecs properly (i.e. request_probe by mpegts). */
2644
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 6357 if (ist->codecpar->codec_id != st->codecpar->codec_id) {
2645 10 ret = set_stream_info_from_input_stream(st, pls, ist);
2646
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 10 if (ret < 0) {
2647 ✗ return ret;
2648 }
2649 }
2650
2651 6357 return 0;
2652 }
2653 11 return AVERROR_EOF;
2654 }
2655
2656 ✗ static int hls_read_seek(AVFormatContext *s, int stream_index,
2657 int64_t timestamp, int flags)
2658 {
2659 ✗ HLSContext *c = s->priv_data;
2660 ✗ struct playlist *seek_pls = NULL;
2661 int i, j;
2662 int stream_subdemuxer_index;
2663 int64_t first_timestamp, seek_timestamp, duration;
2664 int64_t seq_no, seg_start_ts;
2665
2666 ✗ if ((flags & AVSEEK_FLAG_BYTE) || (c->ctx->ctx_flags & AVFMTCTX_UNSEEKABLE))
2667 ✗ return AVERROR(ENOSYS);
2668
2669 ✗ first_timestamp = c->first_timestamp == AV_NOPTS_VALUE ?
2670 ✗ 0 : c->first_timestamp;
2671
2672 ✗ seek_timestamp = av_rescale_rnd(timestamp, AV_TIME_BASE,
2673 ✗ s->streams[stream_index]->time_base.den,
2674 AV_ROUND_DOWN);
2675
2676 ✗ duration = s->duration == AV_NOPTS_VALUE ?
2677 ✗ 0 : s->duration;
2678
2679 ✗ if (0 < duration && duration < seek_timestamp - first_timestamp)
2680 ✗ return AVERROR(EIO);
2681
2682 /* find the playlist with the specified stream */
2683 ✗ for (i = 0; i < c->n_playlists; i++) {
2684 ✗ struct playlist *pls = c->playlists[i];
2685 ✗ for (j = 0; j < pls->n_main_streams; j++) {
2686 ✗ if (pls->main_streams[j] == s->streams[stream_index]) {
2687 ✗ seek_pls = pls;
2688 ✗ stream_subdemuxer_index = j;
2689 ✗ break;
2690 }
2691 }
2692 }
2693 /* check if the timestamp is valid for the playlist with the
2694 * specified stream index */
2695 ✗ if (!seek_pls || !find_timestamp_in_playlist(c, seek_pls, seek_timestamp, &seq_no, &seg_start_ts))
2696 ✗ return AVERROR(EIO);
2697
2698 ✗ if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2699 ✗ flags & AVSEEK_FLAG_BACKWARD && !(flags & AVSEEK_FLAG_ANY)) {
2700 /* Seeking to start of segment ensures we seek to a keyframe located
2701 * before the given timestamp. */
2702 ✗ seek_timestamp = seg_start_ts;
2703 }
2704
2705 /* set segment now so we do not need to search again below */
2706 ✗ seek_pls->cur_seq_no = seq_no;
2707 ✗ seek_pls->seek_stream_index = stream_subdemuxer_index;
2708
2709 ✗ for (i = 0; i < c->n_playlists; i++) {
2710 /* Reset reading */
2711 ✗ struct playlist *pls = c->playlists[i];
2712 ✗ AVIOContext *const pb = &pls->pb.pub;
2713 ✗ ff_format_io_close(pls->parent, &pls->input);
2714 ✗ pls->input_read_done = 0;
2715 ✗ ff_format_io_close(pls->parent, &pls->input_next);
2716 ✗ pls->input_next_requested = 0;
2717 ✗ av_packet_unref(pls->pkt);
2718 ✗ pb->eof_reached = 0;
2719 /* Clear any buffered data */
2720 ✗ pb->buf_end = pb->buf_ptr = pb->buffer;
2721 /* Reset the pos, to let the mpegts/mov demuxer know we've seeked. */
2722 ✗ pb->pos = 0;
2723 /* Flush the packet queue of the subdemuxer. */
2724 ✗ if (pls->ctx)
2725 ✗ ff_read_frame_flush(pls->ctx);
2726 ✗ if (pls->is_subtitle)
2727 ✗ avformat_close_input(&pls->ctx);
2728
2729 /* Reset the init segment so it's re-fetched and served appropiately */
2730 ✗ pls->cur_init_section = NULL;
2731
2732 ✗ pls->seek_timestamp = seek_timestamp;
2733 ✗ pls->seek_flags = flags;
2734
2735 ✗ if (pls != seek_pls) {
2736 /* set closest segment seq_no for playlists not handled above */
2737 ✗ find_timestamp_in_playlist(c, pls, seek_timestamp, &pls->cur_seq_no, NULL);
2738 /* seek the playlist to the given position without taking
2739 * keyframes into account since this playlist does not have the
2740 * specified stream where we should look for the keyframes */
2741 ✗ pls->seek_stream_index = -1;
2742 ✗ pls->seek_flags |= AVSEEK_FLAG_ANY;
2743 }
2744 }
2745
2746 ✗ c->cur_timestamp = seek_timestamp;
2747
2748 ✗ return 0;
2749 }
2750
2751 7233 static int hls_probe(const AVProbeData *p)
2752 {
2753 /* Require #EXTM3U at the start, and either one of the ones below
2754 * somewhere for a proper match. */
2755
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 7233 if (strncmp(p->buf, "#EXTM3U", 7))
2756 7221 return 0;
2757
2758
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 12 if (strstr(p->buf, "#EXT-X-STREAM-INF:") ||
2759
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 12 strstr(p->buf, "#EXT-X-TARGETDURATION:") ||
2760 ✗ strstr(p->buf, "#EXT-X-MEDIA-SEQUENCE:")) {
2761
2762
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 12 int mime_ok = p->mime_type && !(
2763 ✗ av_strcasecmp(p->mime_type, "application/vnd.apple.mpegurl") &&
2764 ✗ av_strcasecmp(p->mime_type, "audio/mpegurl")
2765 );
2766
2767
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 12 int mime_x = p->mime_type && !(
2768 ✗ av_strcasecmp(p->mime_type, "audio/x-mpegurl") &&
2769 ✗ av_strcasecmp(p->mime_type, "application/x-mpegurl")
2770 );
2771
2772
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 12 if (!mime_ok &&
2773
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 12 !mime_x &&
2774
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 12 !av_match_ext (p->filename, "m3u8,m3u") &&
2775 ✗ ff_match_url_ext(p->filename, "m3u8,m3u") <= 0) {
2776 ✗ av_log(NULL, AV_LOG_ERROR, "Not detecting m3u8/hls with non standard extension and non standard mime type\n");
2777 ✗ return 0;
2778 }
2779
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 12 if (mime_x)
2780 ✗ av_log(NULL, AV_LOG_WARNING, "mime type is not rfc8216 compliant\n");
2781
2782 12 return AVPROBE_SCORE_MAX;
2783 }
2784 ✗ return 0;
2785 }
2786
2787 #define OFFSET(x) offsetof(HLSContext, x)
2788 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2789 static const AVOption hls_options[] = {
2790 {"live_start_index", "segment index to start live streams at (negative values are from the end)",
2791 OFFSET(live_start_index), AV_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS},
2792 {"prefer_x_start", "prefer to use #EXT-X-START if it's in playlist instead of live_start_index",
2793 OFFSET(prefer_x_start), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS},
2794 {"allowed_extensions", "List of file extensions that hls is allowed to access",
2795 OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
2796 {.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"
2797 ",cmfv,cmfa" // Ticket11526 www.nicovideo.jp
2798 ",ec3" // part of Ticket11435 (Elisa Viihde (Finnish online recording service))
2799 ",fmp4" // https://github.com/yt-dlp/yt-dlp/issues/12700
2800 },
2801 INT_MIN, INT_MAX, FLAGS},
2802 {"allowed_segment_extensions", "List of file extensions that hls is allowed to access",
2803 OFFSET(allowed_segment_extensions), AV_OPT_TYPE_STRING,
2804 {.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"
2805 ",cmfv,cmfa" // Ticket11526 www.nicovideo.jp
2806 ",ec3" // part of Ticket11435 (Elisa Viihde (Finnish online recording service))
2807 ",fmp4" // https://github.com/yt-dlp/yt-dlp/issues/12700
2808 ",html" // https://flash1.bogulus.cfd/
2809 },
2810 INT_MIN, INT_MAX, FLAGS},
2811 {"extension_picky", "Be picky with all extensions matching",
2812 OFFSET(extension_picky), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS},
2813 {"max_reload", "Maximum number of times a insufficient list is attempted to be reloaded",
2814 OFFSET(max_reload), AV_OPT_TYPE_INT, {.i64 = 100}, 0, INT_MAX, FLAGS},
2815 {"m3u8_hold_counters", "The maximum number of times to load m3u8 when it refreshes without new segments",
2816 OFFSET(m3u8_hold_counters), AV_OPT_TYPE_INT, {.i64 = 1000}, 0, INT_MAX, FLAGS},
2817 {"http_persistent", "Use persistent HTTP connections",
2818 OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
2819 {"http_multiple", "Use multiple HTTP connections for fetching segments",
2820 OFFSET(http_multiple), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, FLAGS},
2821 {"http_seekable", "Use HTTP partial requests, 0 = disable, 1 = enable, -1 = auto",
2822 OFFSET(http_seekable), AV_OPT_TYPE_BOOL, { .i64 = -1}, -1, 1, FLAGS},
2823 {"seg_format_options", "Set options for segment demuxer",
2824 OFFSET(seg_format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
2825 {"seg_max_retry", "Maximum number of times to reload a segment on error.",
2826 OFFSET(seg_max_retry), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS},
2827 {NULL}
2828 };
2829
2830 static const AVClass hls_class = {
2831 .class_name = "hls demuxer",
2832 .item_name = av_default_item_name,
2833 .option = hls_options,
2834 .version = LIBAVUTIL_VERSION_INT,
2835 };
2836
2837 const FFInputFormat ff_hls_demuxer = {
2838 .p.name = "hls",
2839 .p.long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2840 .p.priv_class = &hls_class,
2841 .p.flags = AVFMT_NOGENSEARCH | AVFMT_TS_DISCONT | AVFMT_NO_BYTE_SEEK,
2842 .priv_data_size = sizeof(HLSContext),
2843 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
2844 .read_probe = hls_probe,
2845 .read_header = hls_read_header,
2846 .read_packet = hls_read_packet,
2847 .read_close = hls_close,
2848 .read_seek = hls_read_seek,
2849 };
2850