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hlsenc.c
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1 /*
2  * Apple HTTP Live Streaming segmenter
3  * Copyright (c) 2012, Luca Barbato
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "config.h"
23 #include <float.h>
24 #include <stdint.h>
25 #if HAVE_UNISTD_H
26 #include <unistd.h>
27 #endif
28 
29 #include "libavutil/avassert.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/parseutils.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/log.h"
36 
37 #include "avformat.h"
38 #include "avio_internal.h"
39 #include "internal.h"
40 #include "os_support.h"
41 
42 #define KEYSIZE 16
43 #define LINE_BUFFER_SIZE 1024
44 
45 typedef struct HLSSegment {
46  char filename[1024];
47  char sub_filename[1024];
48  double duration; /* in seconds */
49  int64_t pos;
50  int64_t size;
51 
53  char iv_string[KEYSIZE*2 + 1];
54 
55  struct HLSSegment *next;
56 } HLSSegment;
57 
58 typedef enum HLSFlags {
59  // Generate a single media file and use byte ranges in the playlist.
60  HLS_SINGLE_FILE = (1 << 0),
61  HLS_DELETE_SEGMENTS = (1 << 1),
62  HLS_ROUND_DURATIONS = (1 << 2),
63  HLS_DISCONT_START = (1 << 3),
64  HLS_OMIT_ENDLIST = (1 << 4),
65  HLS_SPLIT_BY_TIME = (1 << 5),
66  HLS_APPEND_LIST = (1 << 6),
68 } HLSFlags;
69 
70 typedef enum {
75 } PlaylistType;
76 
77 typedef struct HLSContext {
78  const AVClass *class; // Class for private options.
79  unsigned number;
80  int64_t sequence;
81  int64_t start_sequence;
84 
87 
88  float time; // Set by a private option.
89  float init_time; // Set by a private option.
90  int max_nb_segments; // Set by a private option.
91  int wrap; // Set by a private option.
92  uint32_t flags; // enum HLSFlags
93  uint32_t pl_type; // enum PlaylistType
95 
96  int use_localtime; ///< flag to expand filename with localtime
97  int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
99  int64_t recording_time;
102  int64_t start_pts;
103  int64_t end_pts;
104  double duration; // last segment duration computed so far, in seconds
105  int64_t start_pos; // last segment starting position
106  int64_t size; // last segment size
107  int64_t max_seg_size; // every segment file max size
110 
114 
115  char *basename;
118  char *baseurl;
123 
127  char key_string[KEYSIZE*2 + 1];
128  char iv_string[KEYSIZE*2 + 1];
130 
131  char *method;
132 
134 } HLSContext;
135 
137 
138  HLSSegment *segment, *previous_segment = NULL;
139  float playlist_duration = 0.0f;
140  int ret = 0, path_size, sub_path_size;
141  char *dirname = NULL, *p, *sub_path;
142  char *path = NULL;
143 
144  segment = hls->segments;
145  while (segment) {
146  playlist_duration += segment->duration;
147  segment = segment->next;
148  }
149 
150  segment = hls->old_segments;
151  while (segment) {
152  playlist_duration -= segment->duration;
153  previous_segment = segment;
154  segment = previous_segment->next;
155  if (playlist_duration <= -previous_segment->duration) {
156  previous_segment->next = NULL;
157  break;
158  }
159  }
160 
161  if (segment) {
162  if (hls->segment_filename) {
163  dirname = av_strdup(hls->segment_filename);
164  } else {
165  dirname = av_strdup(hls->avf->filename);
166  }
167  if (!dirname) {
168  ret = AVERROR(ENOMEM);
169  goto fail;
170  }
171  p = (char *)av_basename(dirname);
172  *p = '\0';
173  }
174 
175  while (segment) {
176  av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
177  segment->filename);
178  path_size = strlen(dirname) + strlen(segment->filename) + 1;
179  path = av_malloc(path_size);
180  if (!path) {
181  ret = AVERROR(ENOMEM);
182  goto fail;
183  }
184 
185  av_strlcpy(path, dirname, path_size);
186  av_strlcat(path, segment->filename, path_size);
187  if (unlink(path) < 0) {
188  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
189  path, strerror(errno));
190  }
191 
192  if (segment->sub_filename[0] != '\0') {
193  sub_path_size = strlen(dirname) + strlen(segment->sub_filename) + 1;
194  sub_path = av_malloc(sub_path_size);
195  if (!sub_path) {
196  ret = AVERROR(ENOMEM);
197  goto fail;
198  }
199 
200  av_strlcpy(sub_path, dirname, sub_path_size);
201  av_strlcat(sub_path, segment->sub_filename, sub_path_size);
202  if (unlink(sub_path) < 0) {
203  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
204  sub_path, strerror(errno));
205  }
206  av_free(sub_path);
207  }
208  av_freep(&path);
209  previous_segment = segment;
210  segment = previous_segment->next;
211  av_free(previous_segment);
212  }
213 
214 fail:
215  av_free(path);
216  av_free(dirname);
217 
218  return ret;
219 }
220 
222 {
223  HLSContext *hls = s->priv_data;
224  int ret;
225  AVIOContext *pb;
226  uint8_t key[KEYSIZE];
227 
228  if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
229  av_log(hls, AV_LOG_ERROR,
230  "error opening key info file %s\n", hls->key_info_file);
231  return ret;
232  }
233 
234  ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
235  hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
236 
237  ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
238  hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
239 
240  ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
241  hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
242 
243  ff_format_io_close(s, &pb);
244 
245  if (!*hls->key_uri) {
246  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
247  return AVERROR(EINVAL);
248  }
249 
250  if (!*hls->key_file) {
251  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
252  return AVERROR(EINVAL);
253  }
254 
255  if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
256  av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
257  return ret;
258  }
259 
260  ret = avio_read(pb, key, sizeof(key));
261  ff_format_io_close(s, &pb);
262  if (ret != sizeof(key)) {
263  av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
264  if (ret >= 0 || ret == AVERROR_EOF)
265  ret = AVERROR(EINVAL);
266  return ret;
267  }
268  ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
269 
270  return 0;
271 }
272 
273 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
274 {
275  int len = ff_get_line(s, buf, maxlen);
276  while (len > 0 && av_isspace(buf[len - 1]))
277  buf[--len] = '\0';
278  return len;
279 }
280 
282 {
283  HLSContext *hls = s->priv_data;
284  AVFormatContext *oc;
285  AVFormatContext *vtt_oc = NULL;
286  int i, ret;
287 
288  ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
289  if (ret < 0)
290  return ret;
291  oc = hls->avf;
292 
293  oc->oformat = hls->oformat;
295  oc->max_delay = s->max_delay;
296  oc->opaque = s->opaque;
297  oc->io_open = s->io_open;
298  oc->io_close = s->io_close;
299  av_dict_copy(&oc->metadata, s->metadata, 0);
300 
301  if(hls->vtt_oformat) {
303  if (ret < 0)
304  return ret;
305  vtt_oc = hls->vtt_avf;
306  vtt_oc->oformat = hls->vtt_oformat;
307  av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
308  }
309 
310  for (i = 0; i < s->nb_streams; i++) {
311  AVStream *st;
312  AVFormatContext *loc;
314  loc = vtt_oc;
315  else
316  loc = oc;
317 
318  if (!(st = avformat_new_stream(loc, NULL)))
319  return AVERROR(ENOMEM);
322  st->time_base = s->streams[i]->time_base;
323  }
324  hls->start_pos = 0;
325 
326  return 0;
327 }
328 
329 /* Create a new segment and append it to the segment list */
330 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
331  int64_t pos, int64_t size)
332 {
333  HLSSegment *en = av_malloc(sizeof(*en));
334  char *tmp, *p;
335  const char *pl_dir, *filename;
336  int ret;
337 
338  if (!en)
339  return AVERROR(ENOMEM);
340 
341  filename = av_basename(hls->avf->filename);
342 
343  if (hls->use_localtime_mkdir) {
344  /* Possibly prefix with mkdir'ed subdir, if playlist share same
345  * base path. */
346  tmp = av_strdup(s->filename);
347  if (!tmp) {
348  av_free(en);
349  return AVERROR(ENOMEM);
350  }
351 
352  pl_dir = av_dirname(tmp);
353  p = hls->avf->filename;
354  if (strstr(p, pl_dir) == p)
355  filename = hls->avf->filename + strlen(pl_dir) + 1;
356  av_free(tmp);
357  }
358  av_strlcpy(en->filename, filename, sizeof(en->filename));
359 
360  if(hls->has_subtitle)
362  else
363  en->sub_filename[0] = '\0';
364 
365  en->duration = duration;
366  en->pos = pos;
367  en->size = size;
368  en->next = NULL;
369 
370  if (hls->key_info_file) {
371  av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
372  av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
373  }
374 
375  if (!hls->segments)
376  hls->segments = en;
377  else
378  hls->last_segment->next = en;
379 
380  hls->last_segment = en;
381 
382  // EVENT or VOD playlists imply sliding window cannot be used
383  if (hls->pl_type != PLAYLIST_TYPE_NONE)
384  hls->max_nb_segments = 0;
385 
386  if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
387  en = hls->segments;
388  hls->segments = en->next;
389  if (en && hls->flags & HLS_DELETE_SEGMENTS &&
390  !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
391  en->next = hls->old_segments;
392  hls->old_segments = en;
393  if ((ret = hls_delete_old_segments(hls)) < 0)
394  return ret;
395  } else
396  av_free(en);
397  } else
398  hls->nb_entries++;
399 
400  if (hls->max_seg_size > 0) {
401  return 0;
402  }
403  hls->sequence++;
404 
405  return 0;
406 }
407 
408 static int parse_playlist(AVFormatContext *s, const char *url)
409 {
410  HLSContext *hls = s->priv_data;
411  AVIOContext *in;
412  int ret = 0, is_segment = 0;
413  int64_t new_start_pos;
414  char line[1024];
415  const char *ptr;
416 
417  if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
420  return ret;
421 
422  read_chomp_line(in, line, sizeof(line));
423  if (strcmp(line, "#EXTM3U")) {
424  ret = AVERROR_INVALIDDATA;
425  goto fail;
426  }
427 
428  while (!avio_feof(in)) {
429  read_chomp_line(in, line, sizeof(line));
430  if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
431  hls->sequence = atoi(ptr);
432  } else if (av_strstart(line, "#EXTINF:", &ptr)) {
433  is_segment = 1;
434  hls->duration = atof(ptr);
435  } else if (av_strstart(line, "#", NULL)) {
436  continue;
437  } else if (line[0]) {
438  if (is_segment) {
439  is_segment = 0;
440  new_start_pos = avio_tell(hls->avf->pb);
441  hls->size = new_start_pos - hls->start_pos;
442  av_strlcpy(hls->avf->filename, line, sizeof(line));
443  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
444  if (ret < 0)
445  goto fail;
446  hls->start_pos = new_start_pos;
447  }
448  }
449  }
450 
451 fail:
452  avio_close(in);
453  return ret;
454 }
455 
457 {
458  HLSSegment *en;
459 
460  while(p) {
461  en = p;
462  p = p->next;
463  av_free(en);
464  }
465 }
466 
468 {
469  if (c->method)
470  av_dict_set(options, "method", c->method, 0);
471 }
472 
473 static int hls_window(AVFormatContext *s, int last)
474 {
475  HLSContext *hls = s->priv_data;
476  HLSSegment *en;
477  int target_duration = 0;
478  int ret = 0;
479  AVIOContext *out = NULL;
480  AVIOContext *sub_out = NULL;
481  char temp_filename[1024];
482  int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
483  int version = 3;
484  const char *proto = avio_find_protocol_name(s->filename);
485  int use_rename = proto && !strcmp(proto, "file");
486  static unsigned warned_non_file;
487  char *key_uri = NULL;
488  char *iv_string = NULL;
490  double prog_date_time = hls->initial_prog_date_time;
491  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
492 
493  if (byterange_mode) {
494  version = 4;
495  sequence = 0;
496  }
497 
498  if (!use_rename && !warned_non_file++)
499  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporarly partial files\n");
500 
501  set_http_options(&options, hls);
502  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
503  if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
504  goto fail;
505 
506  for (en = hls->segments; en; en = en->next) {
507  if (target_duration < en->duration)
508  target_duration = ceil(en->duration);
509  }
510 
511  hls->discontinuity_set = 0;
512  avio_printf(out, "#EXTM3U\n");
513  avio_printf(out, "#EXT-X-VERSION:%d\n", version);
514  if (hls->allowcache == 0 || hls->allowcache == 1) {
515  avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
516  }
517  avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
518  avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
519  if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
520  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
521  } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
522  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
523  }
524 
525  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
526  sequence);
527  if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
528  avio_printf(out, "#EXT-X-DISCONTINUITY\n");
529  hls->discontinuity_set = 1;
530  }
531  for (en = hls->segments; en; en = en->next) {
532  if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
533  av_strcasecmp(en->iv_string, iv_string))) {
534  avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
535  if (*en->iv_string)
536  avio_printf(out, ",IV=0x%s", en->iv_string);
537  avio_printf(out, "\n");
538  key_uri = en->key_uri;
539  iv_string = en->iv_string;
540  }
541 
542  if (hls->flags & HLS_ROUND_DURATIONS)
543  avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
544  else
545  avio_printf(out, "#EXTINF:%f,\n", en->duration);
546  if (byterange_mode)
547  avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
548  en->size, en->pos);
549  if (hls->flags & HLS_PROGRAM_DATE_TIME) {
550  time_t tt, wrongsecs;
551  int milli;
552  struct tm *tm, tmpbuf;
553  char buf0[128], buf1[128];
554  tt = (int64_t)prog_date_time;
555  milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
556  tm = localtime_r(&tt, &tmpbuf);
557  strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
558  if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
559  int tz_min, dst = tm->tm_isdst;
560  tm = gmtime_r(&tt, &tmpbuf);
561  tm->tm_isdst = dst;
562  wrongsecs = mktime(tm);
563  tz_min = (abs(wrongsecs - tt) + 30) / 60;
564  snprintf(buf1, sizeof(buf1),
565  "%c%02d%02d",
566  wrongsecs <= tt ? '+' : '-',
567  tz_min / 60,
568  tz_min % 60);
569  }
570  avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
571  prog_date_time += en->duration;
572  }
573  if (hls->baseurl)
574  avio_printf(out, "%s", hls->baseurl);
575  avio_printf(out, "%s\n", en->filename);
576  }
577 
578  if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
579  avio_printf(out, "#EXT-X-ENDLIST\n");
580 
581  if( hls->vtt_m3u8_name ) {
582  if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
583  goto fail;
584  avio_printf(sub_out, "#EXTM3U\n");
585  avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
586  if (hls->allowcache == 0 || hls->allowcache == 1) {
587  avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
588  }
589  avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
590  avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
591 
592  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
593  sequence);
594 
595  for (en = hls->segments; en; en = en->next) {
596  avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
597  if (byterange_mode)
598  avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
599  en->size, en->pos);
600  if (hls->baseurl)
601  avio_printf(sub_out, "%s", hls->baseurl);
602  avio_printf(sub_out, "%s\n", en->sub_filename);
603  }
604 
605  if (last)
606  avio_printf(sub_out, "#EXT-X-ENDLIST\n");
607 
608  }
609 
610 fail:
611  av_dict_free(&options);
612  ff_format_io_close(s, &out);
613  ff_format_io_close(s, &sub_out);
614  if (ret >= 0 && use_rename)
615  ff_rename(temp_filename, s->filename, s);
616  return ret;
617 }
618 
620 {
621  HLSContext *c = s->priv_data;
622  AVFormatContext *oc = c->avf;
623  AVFormatContext *vtt_oc = c->vtt_avf;
625  char *filename, iv_string[KEYSIZE*2 + 1];
626  int err = 0;
627 
628  if (c->flags & HLS_SINGLE_FILE) {
629  av_strlcpy(oc->filename, c->basename,
630  sizeof(oc->filename));
631  if (c->vtt_basename)
632  av_strlcpy(vtt_oc->filename, c->vtt_basename,
633  sizeof(vtt_oc->filename));
634  } else if (c->max_seg_size > 0) {
635  if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
636  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
638  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
639  return AVERROR(EINVAL);
640  }
641  } else {
642  if (c->use_localtime) {
643  time_t now0;
644  struct tm *tm, tmpbuf;
645  time(&now0);
646  tm = localtime_r(&now0, &tmpbuf);
647  if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
648  av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
649  return AVERROR(EINVAL);
650  }
651 
652  if (c->use_localtime_mkdir) {
653  const char *dir;
654  char *fn_copy = av_strdup(oc->filename);
655  if (!fn_copy) {
656  return AVERROR(ENOMEM);
657  }
658  dir = av_dirname(fn_copy);
659  if (mkdir(dir, 0777) == -1 && errno != EEXIST) {
660  av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
661  av_free(fn_copy);
662  return AVERROR(errno);
663  }
664  av_free(fn_copy);
665  }
666  } else if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
667  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
669  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try use -use_localtime 1 with it\n", c->basename);
670  return AVERROR(EINVAL);
671  }
672  if( c->vtt_basename) {
673  if (av_get_frame_filename2(vtt_oc->filename, sizeof(vtt_oc->filename),
674  c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence,
676  av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
677  return AVERROR(EINVAL);
678  }
679  }
680  }
681  c->number++;
682 
683  set_http_options(&options, c);
684 
685  if (c->key_info_file) {
686  if ((err = hls_encryption_start(s)) < 0)
687  goto fail;
688  if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
689  < 0)
690  goto fail;
691  err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
692  if (!err)
693  snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
694  if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
695  goto fail;
696 
697  filename = av_asprintf("crypto:%s", oc->filename);
698  if (!filename) {
699  err = AVERROR(ENOMEM);
700  goto fail;
701  }
702  err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
703  av_free(filename);
704  av_dict_free(&options);
705  if (err < 0)
706  return err;
707  } else
708  if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
709  goto fail;
710  if (c->vtt_basename) {
711  set_http_options(&options, c);
712  if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
713  goto fail;
714  }
715  av_dict_free(&options);
716 
717  /* We only require one PAT/PMT per segment. */
718  if (oc->oformat->priv_class && oc->priv_data) {
719  char period[21];
720 
721  snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
722 
723  av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
724  av_opt_set(oc->priv_data, "sdt_period", period, 0);
725  av_opt_set(oc->priv_data, "pat_period", period, 0);
726  }
727 
728  if (c->vtt_basename) {
729  err = avformat_write_header(vtt_oc,NULL);
730  if (err < 0)
731  return err;
732  }
733 
734  return 0;
735 fail:
736  av_dict_free(&options);
737 
738  return err;
739 }
740 
742 {
743  HLSContext *hls = s->priv_data;
744  int ret, i;
745  char *p;
746  const char *pattern = "%d.ts";
747  const char *pattern_localtime_fmt = "-%s.ts";
748  const char *vtt_pattern = "%d.vtt";
750  int basename_size;
751  int vtt_basename_size;
752 
753  hls->sequence = hls->start_sequence;
754  hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
755  hls->start_pts = AV_NOPTS_VALUE;
756 
757  if (hls->flags & HLS_PROGRAM_DATE_TIME) {
758  time_t now0;
759  time(&now0);
760  hls->initial_prog_date_time = now0;
761  }
762 
763  if (hls->format_options_str) {
764  ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
765  if (ret < 0) {
766  av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
767  goto fail;
768  }
769  }
770 
771  for (i = 0; i < s->nb_streams; i++) {
772  hls->has_video +=
774  hls->has_subtitle +=
776  }
777 
778  if (hls->has_video > 1)
780  "More than a single video stream present, "
781  "expect issues decoding it.\n");
782 
783  hls->oformat = av_guess_format("mpegts", NULL, NULL);
784 
785  if (!hls->oformat) {
787  goto fail;
788  }
789 
790  if(hls->has_subtitle) {
791  hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
792  if (!hls->oformat) {
794  goto fail;
795  }
796  }
797 
798  if (hls->segment_filename) {
799  hls->basename = av_strdup(hls->segment_filename);
800  if (!hls->basename) {
801  ret = AVERROR(ENOMEM);
802  goto fail;
803  }
804  } else {
805  if (hls->flags & HLS_SINGLE_FILE)
806  pattern = ".ts";
807 
808  if (hls->use_localtime) {
809  basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
810  } else {
811  basename_size = strlen(s->filename) + strlen(pattern) + 1;
812  }
813  hls->basename = av_malloc(basename_size);
814  if (!hls->basename) {
815  ret = AVERROR(ENOMEM);
816  goto fail;
817  }
818 
819  av_strlcpy(hls->basename, s->filename, basename_size);
820 
821  p = strrchr(hls->basename, '.');
822  if (p)
823  *p = '\0';
824  if (hls->use_localtime) {
825  av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
826  } else {
827  av_strlcat(hls->basename, pattern, basename_size);
828  }
829  }
830 
831  if(hls->has_subtitle) {
832 
833  if (hls->flags & HLS_SINGLE_FILE)
834  vtt_pattern = ".vtt";
835  vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
836  hls->vtt_basename = av_malloc(vtt_basename_size);
837  if (!hls->vtt_basename) {
838  ret = AVERROR(ENOMEM);
839  goto fail;
840  }
841  hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
842  if (!hls->vtt_m3u8_name ) {
843  ret = AVERROR(ENOMEM);
844  goto fail;
845  }
846  av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
847  p = strrchr(hls->vtt_basename, '.');
848  if (p)
849  *p = '\0';
850 
851  if( hls->subtitle_filename ) {
852  strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
853  } else {
854  strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
855  av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
856  }
857  av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
858  }
859 
860  if ((ret = hls_mux_init(s)) < 0)
861  goto fail;
862 
863  if (hls->flags & HLS_APPEND_LIST) {
864  parse_playlist(s, s->filename);
865  if (hls->init_time > 0) {
866  av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
867  " hls_init_time value will have no effect\n");
868  hls->init_time = 0;
869  hls->recording_time = hls->time * AV_TIME_BASE;
870  }
871  }
872 
873  if ((ret = hls_start(s)) < 0)
874  goto fail;
875 
876  av_dict_copy(&options, hls->format_options, 0);
877  ret = avformat_write_header(hls->avf, &options);
878  if (av_dict_count(options)) {
879  av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
880  ret = AVERROR(EINVAL);
881  goto fail;
882  }
883  //av_assert0(s->nb_streams == hls->avf->nb_streams);
884  for (i = 0; i < s->nb_streams; i++) {
885  AVStream *inner_st;
886  AVStream *outer_st = s->streams[i];
887 
888  if (hls->max_seg_size > 0) {
889  if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
890  (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
891  av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
892  "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
893  outer_st->codecpar->bit_rate, hls->max_seg_size);
894  }
895  }
896 
897  if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
898  inner_st = hls->avf->streams[i];
899  else if (hls->vtt_avf)
900  inner_st = hls->vtt_avf->streams[0];
901  else {
902  /* We have a subtitle stream, when the user does not want one */
903  inner_st = NULL;
904  continue;
905  }
906  avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
907  }
908 fail:
909 
910  av_dict_free(&options);
911  if (ret < 0) {
912  av_freep(&hls->basename);
913  av_freep(&hls->vtt_basename);
914  if (hls->avf)
916  if (hls->vtt_avf)
918 
919  }
920  return ret;
921 }
922 
924 {
925  HLSContext *hls = s->priv_data;
926  AVFormatContext *oc = NULL;
927  AVStream *st = s->streams[pkt->stream_index];
928  int64_t end_pts = hls->recording_time * hls->number;
929  int is_ref_pkt = 1;
930  int ret, can_split = 1;
931  int stream_index = 0;
932 
933  if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
934  /* reset end_pts, hls->recording_time at end of the init hls list */
935  int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
936  int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
937  hls->recording_time = hls->time * AV_TIME_BASE;
938  end_pts = init_list_dur + after_init_list_dur ;
939  }
940 
942  oc = hls->vtt_avf;
943  stream_index = 0;
944  } else {
945  oc = hls->avf;
946  stream_index = pkt->stream_index;
947  }
948  if (hls->start_pts == AV_NOPTS_VALUE) {
949  hls->start_pts = pkt->pts;
950  hls->end_pts = pkt->pts;
951  }
952 
953  if (hls->has_video) {
954  can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
955  ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
956  is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
957  }
958  if (pkt->pts == AV_NOPTS_VALUE)
959  is_ref_pkt = can_split = 0;
960 
961  if (is_ref_pkt)
962  hls->duration = (double)(pkt->pts - hls->end_pts)
963  * st->time_base.num / st->time_base.den;
964 
965  if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
966  end_pts, AV_TIME_BASE_Q) >= 0) {
967  int64_t new_start_pos;
968  av_write_frame(oc, NULL); /* Flush any buffered data */
969 
970  new_start_pos = avio_tell(hls->avf->pb);
971  hls->size = new_start_pos - hls->start_pos;
972  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
973  hls->start_pos = new_start_pos;
974  if (ret < 0)
975  return ret;
976 
977  hls->end_pts = pkt->pts;
978  hls->duration = 0;
979 
980  if (hls->flags & HLS_SINGLE_FILE) {
981  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
982  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
983  hls->number++;
984  } else if (hls->max_seg_size > 0) {
985  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
986  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
987  if (hls->start_pos >= hls->max_seg_size) {
988  hls->sequence++;
989  ff_format_io_close(s, &oc->pb);
990  if (hls->vtt_avf)
991  ff_format_io_close(s, &hls->vtt_avf->pb);
992  ret = hls_start(s);
993  hls->start_pos = 0;
994  /* When split segment by byte, the duration is short than hls_time,
995  * so it is not enough one segment duration as hls_time, */
996  hls->number--;
997  }
998  hls->number++;
999  } else {
1000  ff_format_io_close(s, &oc->pb);
1001  if (hls->vtt_avf)
1002  ff_format_io_close(s, &hls->vtt_avf->pb);
1003 
1004  ret = hls_start(s);
1005  }
1006 
1007  if (ret < 0)
1008  return ret;
1009 
1011  oc = hls->vtt_avf;
1012  else
1013  oc = hls->avf;
1014 
1015  if ((ret = hls_window(s, 0)) < 0)
1016  return ret;
1017  }
1018 
1019  ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1020 
1021  return ret;
1022 }
1023 
1025 {
1026  HLSContext *hls = s->priv_data;
1027  AVFormatContext *oc = hls->avf;
1028  AVFormatContext *vtt_oc = hls->vtt_avf;
1029 
1030  av_write_trailer(oc);
1031  if (oc->pb) {
1032  hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1033  ff_format_io_close(s, &oc->pb);
1034  hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1035  }
1036 
1037  if (vtt_oc) {
1038  if (vtt_oc->pb)
1039  av_write_trailer(vtt_oc);
1040  hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1041  ff_format_io_close(s, &vtt_oc->pb);
1042  }
1043  av_freep(&hls->basename);
1045 
1046  hls->avf = NULL;
1047  hls_window(s, 1);
1048 
1049  if (vtt_oc) {
1050  av_freep(&hls->vtt_basename);
1051  av_freep(&hls->vtt_m3u8_name);
1052  avformat_free_context(vtt_oc);
1053  }
1054 
1057  return 0;
1058 }
1059 
1060 #define OFFSET(x) offsetof(HLSContext, x)
1061 #define E AV_OPT_FLAG_ENCODING_PARAM
1062 static const AVOption options[] = {
1063  {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1064  {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1065  {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1066  {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1067  {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1068  {"hls_vtt_options","set hls vtt list of options for the container format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1069  {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1070  {"hls_allow_cache", "explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments", OFFSET(allowcache), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, E},
1071  {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1072  {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1073  {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1074  {"hls_key_info_file", "file with key URI and key file path", OFFSET(key_info_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1075  {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1076  {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1077  {"single_file", "generate a single media file indexed with byte ranges", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SINGLE_FILE }, 0, UINT_MAX, E, "flags"},
1078  {"delete_segments", "delete segment files that are no longer part of the playlist", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DELETE_SEGMENTS }, 0, UINT_MAX, E, "flags"},
1079  {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1080  {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1081  {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1082  {"split_by_time", "split the hls segment by time which user set by hls_time", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SPLIT_BY_TIME }, 0, UINT_MAX, E, "flags"},
1083  {"append_list", "append the new segments into old hls segment list", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_APPEND_LIST }, 0, UINT_MAX, E, "flags"},
1084  {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1085  {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1086  {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1087  {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type), AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E, "pl_type" },
1088  {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1089  {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1090  {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1091 
1092  { NULL },
1093 };
1094 
1095 static const AVClass hls_class = {
1096  .class_name = "hls muxer",
1097  .item_name = av_default_item_name,
1098  .option = options,
1099  .version = LIBAVUTIL_VERSION_INT,
1100 };
1101 
1102 
1104  .name = "hls",
1105  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1106  .extensions = "m3u8",
1107  .priv_data_size = sizeof(HLSContext),
1108  .audio_codec = AV_CODEC_ID_AAC,
1109  .video_codec = AV_CODEC_ID_H264,
1110  .subtitle_codec = AV_CODEC_ID_WEBVTT,
1115  .priv_class = &hls_class,
1116 };
float time
Definition: hlsenc.c:88
#define NULL
Definition: coverity.c:32
int wrap
Definition: hlsenc.c:91
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:126
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
char * basename
Definition: hlsenc.c:115
PlaylistType
Definition: hlsenc.c:70
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1584
AVOption.
Definition: opt.h:245
static int hls_write_trailer(struct AVFormatContext *s)
Definition: hlsenc.c:1024
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:883
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4549
double duration
Definition: hlsenc.c:48
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt, AVFormatContext *src, int interleave)
Write a packet to another muxer than the one the user originally intended.
Definition: mux.c:1318
char * vtt_format_options_str
Definition: hlsenc.c:120
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:948
int64_t size
Definition: hlsenc.c:50
int num
Numerator.
Definition: rational.h:59
int use_localtime_mkdir
flag to mkdir dirname in timebased filename
Definition: hlsenc.c:97
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:35
#define AVIO_FLAG_READ
read-only
Definition: avio.h:606
static av_const int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
Definition: avstring.h:222
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:607
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int version
Definition: avisynth_c.h:766
static AVPacket pkt
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:495
static int hls_window(AVFormatContext *s, int last)
Definition: hlsenc.c:473
static void set_http_options(AVDictionary **options, HLSContext *c)
Definition: hlsenc.c:467
Format I/O context.
Definition: avformat.h:1330
int max_nb_segments
Definition: hlsenc.c:90
static void write_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:635
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
const char * av_basename(const char *path)
Thread safe basename.
Definition: avstring.c:234
uint8_t
static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration, int64_t pos, int64_t size)
Definition: hlsenc.c:330
#define av_malloc(s)
float init_time
Definition: hlsenc.c:89
AVOptions.
miscellaneous OS support macros and functions.
static void hls_free_segments(HLSSegment *p)
Definition: hlsenc.c:456
HLSSegment * old_segments
Definition: hlsenc.c:113
int64_t end_pts
Definition: hlsenc.c:103
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5244
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4182
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1398
int64_t duration
Definition: movenc.c:63
char * protocol_whitelist
',' separated list of allowed protocols.
Definition: avformat.h:1868
#define AVERROR_EOF
End of file.
Definition: error.h:55
char * format_options_str
Definition: hlsenc.c:119
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define LINE_BUFFER_SIZE
Definition: hlsenc.c:43
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:604
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1349
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3998
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1632
int avformat_alloc_output_context2(AVFormatContext **ctx, AVOutputFormat *oformat, const char *format_name, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:148
static const AVOption options[]
Definition: hlsenc.c:1062
double initial_prog_date_time
Definition: hlsenc.c:133
static int hls_write_header(AVFormatContext *s)
Definition: hlsenc.c:741
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4086
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1546
#define OFFSET(x)
Definition: hlsenc.c:1060
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
struct HLSSegment * next
Definition: hlsenc.c:55
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1069
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
char sub_filename[1024]
Definition: hlsenc.c:47
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3965
AVDictionary * vtt_format_options
Definition: hlsenc.c:129
#define wrap(func)
Definition: neontest.h:65
Definition: graph2dot.c:48
simple assert() macros that are a bit more flexible than ISO C assert().
int has_video
Definition: hlsenc.c:100
double duration
Definition: hlsenc.c:104
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:52
#define AV_FRAME_FILENAME_FLAGS_MULTIPLE
Allow multiple d.
Definition: avformat.h:2744
int64_t recording_time
Definition: hlsenc.c:99
#define FFMAX(a, b)
Definition: common.h:94
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:82
int64_t pos
Definition: hlsenc.c:49
char * vtt_basename
Definition: hlsenc.c:116
static struct tm * gmtime_r(const time_t *clock, struct tm *result)
Definition: time_internal.h:26
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1606
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare two timestamps each in its own time base.
Definition: mathematics.c:147
void * opaque
User data.
Definition: avformat.h:1812
char * baseurl
Definition: hlsenc.c:118
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
Definition: hls.c:67
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1386
int discontinuity_set
Definition: hlsenc.c:109
unsigned number
Definition: hlsenc.c:79
char key_string[KEYSIZE *2+1]
Definition: hlsenc.c:127
int64_t max_seg_size
Definition: hlsenc.c:107
char filename[1024]
input or output filename
Definition: avformat.h:1406
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:248
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:496
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
static struct tm * localtime_r(const time_t *clock, struct tm *result)
Definition: time_internal.h:37
int64_t start_pts
Definition: hlsenc.c:102
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hlsenc.c:923
const char * name
Definition: avformat.h:524
HLSSegment * last_segment
Definition: hlsenc.c:112
#define E
Definition: hlsenc.c:1061
AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:98
HLSSegment * segments
Definition: hlsenc.c:111
AVDictionary * format_options
Definition: hlsenc.c:122
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
Read a whole line of text from AVIOContext.
Definition: aviobuf.c:765
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:552
static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
Definition: hlsenc.c:273
static int hls_delete_old_segments(HLSContext *hls)
Definition: hlsenc.c:136
int use_localtime
flag to expand filename with localtime
Definition: hlsenc.c:96
Stream structure.
Definition: avformat.h:881
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:180
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:53
int64_t start_sequence
Definition: hlsenc.c:81
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
int has_subtitle
Definition: hlsenc.c:101
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:254
AVIOContext * pb
I/O context.
Definition: avformat.h:1372
static int hls_encryption_start(AVFormatContext *s)
Definition: hlsenc.c:221
char * key_info_file
Definition: hlsenc.c:124
AVOutputFormat * oformat
Definition: hlsenc.c:82
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
char * method
Definition: hlsenc.c:131
int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
Return in 'buf' the path with 'd' replaced by a number.
Definition: utils.c:4369
void * buf
Definition: avisynth_c.h:690
int allowcache
Definition: hlsenc.c:98
HLSFlags
Definition: hlsenc.c:58
static int ff_rename(const char *oldpath, const char *newpath, void *logctx)
Wrap errno on rename() error.
Definition: internal.h:514
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
Describe the class of an AVClass context structure.
Definition: log.h:67
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:128
#define snprintf
Definition: snprintf.h:34
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4118
int64_t sequence
Definition: hlsenc.c:80
int ffio_open_whitelist(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist)
Definition: aviobuf.c:1038
misc parsing utilities
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:93
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:473
char key_file[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:125
static int flags
Definition: cpu.c:47
static int hls_mux_init(AVFormatContext *s)
Definition: hlsenc.c:281
int64_t size
Definition: hlsenc.c:106
uint32_t pl_type
Definition: hlsenc.c:93
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
int nb_entries
Definition: hlsenc.c:108
Main libavformat public API header.
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:478
static double c[64]
const char * av_dirname(char *path)
Thread safe dirname.
Definition: avstring.c:251
uint32_t flags
Definition: hlsenc.c:92
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1042
int den
Denominator.
Definition: rational.h:60
static int parse_playlist(AVFormatContext *s, const char *url)
Definition: hlsenc.c:408
#define KEYSIZE
Definition: hlsenc.c:42
int64_t start_pos
Definition: hlsenc.c:105
char * segment_filename
Definition: hlsenc.c:94
#define av_free(p)
int len
char * vtt_m3u8_name
Definition: hlsenc.c:117
char filename[1024]
Definition: hlsenc.c:46
static uint8_t tmp[8]
Definition: des.c:38
static int hls_start(AVFormatContext *s)
Definition: hlsenc.c:619
void * priv_data
Format private data.
Definition: avformat.h:1358
char * subtitle_filename
Definition: hlsenc.c:121
static const uint8_t start_sequence[]
Definition: rtpdec_h264.c:65
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
#define lrint
Definition: tablegen.h:53
AVFormatContext * avf
Definition: hlsenc.c:85
AVOutputFormat ff_hls_muxer
Definition: hlsenc.c:1103
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1251
char * protocol_blacklist
',' separated list of disallowed protocols.
Definition: avformat.h:1903
FILE * out
Definition: movenc.c:54
#define av_freep(p)
#define AVERROR_MUXER_NOT_FOUND
Muxer not found.
Definition: error.h:60
AVCodecParameters * codecpar
Definition: avformat.h:1233
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:328
AVOutputFormat * vtt_oformat
Definition: hlsenc.c:83
int stream_index
Definition: avcodec.h:1602
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:918
static const AVClass hls_class
Definition: hlsenc.c:1095
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1890
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4500
This structure stores compressed data.
Definition: avcodec.h:1577
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:431
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1896
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1593
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:242
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
AVFormatContext * vtt_avf
Definition: hlsenc.c:86