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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 } HLSFlags;
67 
68 typedef enum {
73 } PlaylistType;
74 
75 typedef struct HLSContext {
76  const AVClass *class; // Class for private options.
77  unsigned number;
78  int64_t sequence;
79  int64_t start_sequence;
82 
85 
86  float time; // Set by a private option.
87  int max_nb_segments; // Set by a private option.
88  int wrap; // Set by a private option.
89  uint32_t flags; // enum HLSFlags
90  uint32_t pl_type; // enum PlaylistType
92 
93  int use_localtime; ///< flag to expand filename with localtime
94  int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
96  int64_t recording_time;
97  int has_video;
99  int64_t start_pts;
100  int64_t end_pts;
101  double duration; // last segment duration computed so far, in seconds
102  int64_t start_pos; // last segment starting position
103  int64_t size; // last segment size
106 
110 
111  char *basename;
114  char *baseurl;
119 
123  char key_string[KEYSIZE*2 + 1];
124  char iv_string[KEYSIZE*2 + 1];
126 
127  char *method;
128 
129 } HLSContext;
130 
132 
133  HLSSegment *segment, *previous_segment = NULL;
134  float playlist_duration = 0.0f;
135  int ret = 0, path_size, sub_path_size;
136  char *dirname = NULL, *p, *sub_path;
137  char *path = NULL;
138 
139  segment = hls->segments;
140  while (segment) {
141  playlist_duration += segment->duration;
142  segment = segment->next;
143  }
144 
145  segment = hls->old_segments;
146  while (segment) {
147  playlist_duration -= segment->duration;
148  previous_segment = segment;
149  segment = previous_segment->next;
150  if (playlist_duration <= -previous_segment->duration) {
151  previous_segment->next = NULL;
152  break;
153  }
154  }
155 
156  if (segment) {
157  if (hls->segment_filename) {
158  dirname = av_strdup(hls->segment_filename);
159  } else {
160  dirname = av_strdup(hls->avf->filename);
161  }
162  if (!dirname) {
163  ret = AVERROR(ENOMEM);
164  goto fail;
165  }
166  p = (char *)av_basename(dirname);
167  *p = '\0';
168  }
169 
170  while (segment) {
171  av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
172  segment->filename);
173  path_size = strlen(dirname) + strlen(segment->filename) + 1;
174  path = av_malloc(path_size);
175  if (!path) {
176  ret = AVERROR(ENOMEM);
177  goto fail;
178  }
179 
180  av_strlcpy(path, dirname, path_size);
181  av_strlcat(path, segment->filename, path_size);
182  if (unlink(path) < 0) {
183  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
184  path, strerror(errno));
185  }
186 
187  if (segment->sub_filename[0] != '\0') {
188  sub_path_size = strlen(dirname) + strlen(segment->sub_filename) + 1;
189  sub_path = av_malloc(sub_path_size);
190  if (!sub_path) {
191  ret = AVERROR(ENOMEM);
192  goto fail;
193  }
194 
195  av_strlcpy(sub_path, dirname, sub_path_size);
196  av_strlcat(sub_path, segment->sub_filename, sub_path_size);
197  if (unlink(sub_path) < 0) {
198  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
199  sub_path, strerror(errno));
200  }
201  av_free(sub_path);
202  }
203  av_freep(&path);
204  previous_segment = segment;
205  segment = previous_segment->next;
206  av_free(previous_segment);
207  }
208 
209 fail:
210  av_free(path);
211  av_free(dirname);
212 
213  return ret;
214 }
215 
217 {
218  HLSContext *hls = s->priv_data;
219  int ret;
220  AVIOContext *pb;
221  uint8_t key[KEYSIZE];
222 
223  if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
224  av_log(hls, AV_LOG_ERROR,
225  "error opening key info file %s\n", hls->key_info_file);
226  return ret;
227  }
228 
229  ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
230  hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
231 
232  ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
233  hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
234 
235  ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
236  hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
237 
238  ff_format_io_close(s, &pb);
239 
240  if (!*hls->key_uri) {
241  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
242  return AVERROR(EINVAL);
243  }
244 
245  if (!*hls->key_file) {
246  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
247  return AVERROR(EINVAL);
248  }
249 
250  if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
251  av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
252  return ret;
253  }
254 
255  ret = avio_read(pb, key, sizeof(key));
256  ff_format_io_close(s, &pb);
257  if (ret != sizeof(key)) {
258  av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
259  if (ret >= 0 || ret == AVERROR_EOF)
260  ret = AVERROR(EINVAL);
261  return ret;
262  }
263  ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
264 
265  return 0;
266 }
267 
269 {
270  HLSContext *hls = s->priv_data;
271  AVFormatContext *oc;
272  AVFormatContext *vtt_oc = NULL;
273  int i, ret;
274 
275  ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
276  if (ret < 0)
277  return ret;
278  oc = hls->avf;
279 
280  oc->oformat = hls->oformat;
282  oc->max_delay = s->max_delay;
283  oc->opaque = s->opaque;
284  oc->io_open = s->io_open;
285  oc->io_close = s->io_close;
286  av_dict_copy(&oc->metadata, s->metadata, 0);
287 
288  if(hls->vtt_oformat) {
290  if (ret < 0)
291  return ret;
292  vtt_oc = hls->vtt_avf;
293  vtt_oc->oformat = hls->vtt_oformat;
294  av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
295  }
296 
297  for (i = 0; i < s->nb_streams; i++) {
298  AVStream *st;
299  AVFormatContext *loc;
301  loc = vtt_oc;
302  else
303  loc = oc;
304 
305  if (!(st = avformat_new_stream(loc, NULL)))
306  return AVERROR(ENOMEM);
309  st->time_base = s->streams[i]->time_base;
310  }
311  hls->start_pos = 0;
312 
313  return 0;
314 }
315 
316 /* Create a new segment and append it to the segment list */
317 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
318  int64_t pos, int64_t size)
319 {
320  HLSSegment *en = av_malloc(sizeof(*en));
321  char *tmp, *p;
322  const char *pl_dir, *filename;
323  int ret;
324 
325  if (!en)
326  return AVERROR(ENOMEM);
327 
328  filename = av_basename(hls->avf->filename);
329 
330  if (hls->use_localtime_mkdir) {
331  /* Possibly prefix with mkdir'ed subdir, if playlist share same
332  * base path. */
333  tmp = av_strdup(s->filename);
334  if (!tmp) {
335  av_free(en);
336  return AVERROR(ENOMEM);
337  }
338 
339  pl_dir = av_dirname(tmp);
340  p = hls->avf->filename;
341  if (strstr(p, pl_dir) == p)
342  filename = hls->avf->filename + strlen(pl_dir) + 1;
343  av_free(tmp);
344  }
345  av_strlcpy(en->filename, filename, sizeof(en->filename));
346 
347  if(hls->has_subtitle)
349  else
350  en->sub_filename[0] = '\0';
351 
352  en->duration = duration;
353  en->pos = pos;
354  en->size = size;
355  en->next = NULL;
356 
357  if (hls->key_info_file) {
358  av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
359  av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
360  }
361 
362  if (!hls->segments)
363  hls->segments = en;
364  else
365  hls->last_segment->next = en;
366 
367  hls->last_segment = en;
368 
369  // EVENT or VOD playlists imply sliding window cannot be used
370  if (hls->pl_type != PLAYLIST_TYPE_NONE)
371  hls->max_nb_segments = 0;
372 
373  if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
374  en = hls->segments;
375  hls->segments = en->next;
376  if (en && hls->flags & HLS_DELETE_SEGMENTS &&
377  !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
378  en->next = hls->old_segments;
379  hls->old_segments = en;
380  if ((ret = hls_delete_old_segments(hls)) < 0)
381  return ret;
382  } else
383  av_free(en);
384  } else
385  hls->nb_entries++;
386 
387  hls->sequence++;
388 
389  return 0;
390 }
391 
393 {
394  HLSSegment *en;
395 
396  while(p) {
397  en = p;
398  p = p->next;
399  av_free(en);
400  }
401 }
402 
404 {
405  if (c->method)
406  av_dict_set(options, "method", c->method, 0);
407 }
408 
409 static int hls_window(AVFormatContext *s, int last)
410 {
411  HLSContext *hls = s->priv_data;
412  HLSSegment *en;
413  int target_duration = 0;
414  int ret = 0;
415  AVIOContext *out = NULL;
416  AVIOContext *sub_out = NULL;
417  char temp_filename[1024];
418  int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
419  int version = hls->flags & HLS_SINGLE_FILE ? 4 : 3;
420  const char *proto = avio_find_protocol_name(s->filename);
421  int use_rename = proto && !strcmp(proto, "file");
422  static unsigned warned_non_file;
423  char *key_uri = NULL;
424  char *iv_string = NULL;
426 
427  if (!use_rename && !warned_non_file++)
428  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporarly partial files\n");
429 
430  set_http_options(&options, hls);
431  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
432  if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
433  goto fail;
434 
435  for (en = hls->segments; en; en = en->next) {
436  if (target_duration < en->duration)
437  target_duration = ceil(en->duration);
438  }
439 
440  hls->discontinuity_set = 0;
441  avio_printf(out, "#EXTM3U\n");
442  avio_printf(out, "#EXT-X-VERSION:%d\n", version);
443  if (hls->allowcache == 0 || hls->allowcache == 1) {
444  avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
445  }
446  avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
447  avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
448  if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
449  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
450  } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
451  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
452  }
453 
454  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
455  sequence);
456  if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
457  avio_printf(out, "#EXT-X-DISCONTINUITY\n");
458  hls->discontinuity_set = 1;
459  }
460  for (en = hls->segments; en; en = en->next) {
461  if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
462  av_strcasecmp(en->iv_string, iv_string))) {
463  avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
464  if (*en->iv_string)
465  avio_printf(out, ",IV=0x%s", en->iv_string);
466  avio_printf(out, "\n");
467  key_uri = en->key_uri;
468  iv_string = en->iv_string;
469  }
470 
471  if (hls->flags & HLS_ROUND_DURATIONS)
472  avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
473  else
474  avio_printf(out, "#EXTINF:%f,\n", en->duration);
475  if (hls->flags & HLS_SINGLE_FILE)
476  avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
477  en->size, en->pos);
478  if (hls->baseurl)
479  avio_printf(out, "%s", hls->baseurl);
480  avio_printf(out, "%s\n", en->filename);
481  }
482 
483  if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
484  avio_printf(out, "#EXT-X-ENDLIST\n");
485 
486  if( hls->vtt_m3u8_name ) {
487  if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
488  goto fail;
489  avio_printf(sub_out, "#EXTM3U\n");
490  avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
491  if (hls->allowcache == 0 || hls->allowcache == 1) {
492  avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
493  }
494  avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
495  avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
496 
497  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
498  sequence);
499 
500  for (en = hls->segments; en; en = en->next) {
501  avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
502  if (hls->flags & HLS_SINGLE_FILE)
503  avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
504  en->size, en->pos);
505  if (hls->baseurl)
506  avio_printf(sub_out, "%s", hls->baseurl);
507  avio_printf(sub_out, "%s\n", en->sub_filename);
508  }
509 
510  if (last)
511  avio_printf(sub_out, "#EXT-X-ENDLIST\n");
512 
513  }
514 
515 fail:
516  av_dict_free(&options);
517  ff_format_io_close(s, &out);
518  ff_format_io_close(s, &sub_out);
519  if (ret >= 0 && use_rename)
520  ff_rename(temp_filename, s->filename, s);
521  return ret;
522 }
523 
525 {
526  HLSContext *c = s->priv_data;
527  AVFormatContext *oc = c->avf;
528  AVFormatContext *vtt_oc = c->vtt_avf;
530  char *filename, iv_string[KEYSIZE*2 + 1];
531  int err = 0;
532 
533  if (c->flags & HLS_SINGLE_FILE) {
534  av_strlcpy(oc->filename, c->basename,
535  sizeof(oc->filename));
536  if (c->vtt_basename)
537  av_strlcpy(vtt_oc->filename, c->vtt_basename,
538  sizeof(vtt_oc->filename));
539  } else {
540  if (c->use_localtime) {
541  time_t now0;
542  struct tm *tm, tmpbuf;
543  time(&now0);
544  tm = localtime_r(&now0, &tmpbuf);
545  if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
546  av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
547  return AVERROR(EINVAL);
548  }
549 
550  if (c->use_localtime_mkdir) {
551  const char *dir;
552  char *fn_copy = av_strdup(oc->filename);
553  if (!fn_copy) {
554  return AVERROR(ENOMEM);
555  }
556  dir = av_dirname(fn_copy);
557  if (mkdir(dir, 0777) == -1 && errno != EEXIST) {
558  av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
559  av_free(fn_copy);
560  return AVERROR(errno);
561  }
562  av_free(fn_copy);
563  }
564  } else if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
565  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
566  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try use -use_localtime 1 with it\n", c->basename);
567  return AVERROR(EINVAL);
568  }
569  if( c->vtt_basename) {
570  if (av_get_frame_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
571  c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
572  av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
573  return AVERROR(EINVAL);
574  }
575  }
576  }
577  c->number++;
578 
579  set_http_options(&options, c);
580 
581  if (c->key_info_file) {
582  if ((err = hls_encryption_start(s)) < 0)
583  goto fail;
584  if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
585  < 0)
586  goto fail;
587  err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
588  if (!err)
589  snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
590  if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
591  goto fail;
592 
593  filename = av_asprintf("crypto:%s", oc->filename);
594  if (!filename) {
595  err = AVERROR(ENOMEM);
596  goto fail;
597  }
598  err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
599  av_free(filename);
600  av_dict_free(&options);
601  if (err < 0)
602  return err;
603  } else
604  if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
605  goto fail;
606  if (c->vtt_basename) {
607  set_http_options(&options, c);
608  if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
609  goto fail;
610  }
611  av_dict_free(&options);
612 
613  /* We only require one PAT/PMT per segment. */
614  if (oc->oformat->priv_class && oc->priv_data) {
615  char period[21];
616 
617  snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
618 
619  av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
620  av_opt_set(oc->priv_data, "sdt_period", period, 0);
621  av_opt_set(oc->priv_data, "pat_period", period, 0);
622  }
623 
624  if (c->vtt_basename) {
625  err = avformat_write_header(vtt_oc,NULL);
626  if (err < 0)
627  return err;
628  }
629 
630  return 0;
631 fail:
632  av_dict_free(&options);
633 
634  return err;
635 }
636 
638 {
639  HLSContext *hls = s->priv_data;
640  int ret, i;
641  char *p;
642  const char *pattern = "%d.ts";
643  const char *pattern_localtime_fmt = "-%s.ts";
644  const char *vtt_pattern = "%d.vtt";
646  int basename_size;
647  int vtt_basename_size;
648 
649  hls->sequence = hls->start_sequence;
650  hls->recording_time = hls->time * AV_TIME_BASE;
651  hls->start_pts = AV_NOPTS_VALUE;
652 
653  if (hls->format_options_str) {
654  ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
655  if (ret < 0) {
656  av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
657  goto fail;
658  }
659  }
660 
661  for (i = 0; i < s->nb_streams; i++) {
662  hls->has_video +=
664  hls->has_subtitle +=
666  }
667 
668  if (hls->has_video > 1)
670  "More than a single video stream present, "
671  "expect issues decoding it.\n");
672 
673  hls->oformat = av_guess_format("mpegts", NULL, NULL);
674 
675  if (!hls->oformat) {
677  goto fail;
678  }
679 
680  if(hls->has_subtitle) {
681  hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
682  if (!hls->oformat) {
684  goto fail;
685  }
686  }
687 
688  if (hls->segment_filename) {
689  hls->basename = av_strdup(hls->segment_filename);
690  if (!hls->basename) {
691  ret = AVERROR(ENOMEM);
692  goto fail;
693  }
694  } else {
695  if (hls->flags & HLS_SINGLE_FILE)
696  pattern = ".ts";
697 
698  if (hls->use_localtime) {
699  basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
700  } else {
701  basename_size = strlen(s->filename) + strlen(pattern) + 1;
702  }
703  hls->basename = av_malloc(basename_size);
704  if (!hls->basename) {
705  ret = AVERROR(ENOMEM);
706  goto fail;
707  }
708 
709  av_strlcpy(hls->basename, s->filename, basename_size);
710 
711  p = strrchr(hls->basename, '.');
712  if (p)
713  *p = '\0';
714  if (hls->use_localtime) {
715  av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
716  } else {
717  av_strlcat(hls->basename, pattern, basename_size);
718  }
719  }
720 
721  if(hls->has_subtitle) {
722 
723  if (hls->flags & HLS_SINGLE_FILE)
724  vtt_pattern = ".vtt";
725  vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
726  hls->vtt_basename = av_malloc(vtt_basename_size);
727  if (!hls->vtt_basename) {
728  ret = AVERROR(ENOMEM);
729  goto fail;
730  }
731  hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
732  if (!hls->vtt_m3u8_name ) {
733  ret = AVERROR(ENOMEM);
734  goto fail;
735  }
736  av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
737  p = strrchr(hls->vtt_basename, '.');
738  if (p)
739  *p = '\0';
740 
741  if( hls->subtitle_filename ) {
742  strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
743  } else {
744  strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
745  av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
746  }
747  av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
748  }
749 
750  if ((ret = hls_mux_init(s)) < 0)
751  goto fail;
752 
753  if ((ret = hls_start(s)) < 0)
754  goto fail;
755 
756  av_dict_copy(&options, hls->format_options, 0);
757  ret = avformat_write_header(hls->avf, &options);
758  if (av_dict_count(options)) {
759  av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
760  ret = AVERROR(EINVAL);
761  goto fail;
762  }
763  //av_assert0(s->nb_streams == hls->avf->nb_streams);
764  for (i = 0; i < s->nb_streams; i++) {
765  AVStream *inner_st;
766  AVStream *outer_st = s->streams[i];
767  if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
768  inner_st = hls->avf->streams[i];
769  else if (hls->vtt_avf)
770  inner_st = hls->vtt_avf->streams[0];
771  else {
772  /* We have a subtitle stream, when the user does not want one */
773  inner_st = NULL;
774  continue;
775  }
776  avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
777  }
778 fail:
779 
780  av_dict_free(&options);
781  if (ret < 0) {
782  av_freep(&hls->basename);
783  av_freep(&hls->vtt_basename);
784  if (hls->avf)
786  if (hls->vtt_avf)
788 
789  }
790  return ret;
791 }
792 
794 {
795  HLSContext *hls = s->priv_data;
796  AVFormatContext *oc = NULL;
797  AVStream *st = s->streams[pkt->stream_index];
798  int64_t end_pts = hls->recording_time * hls->number;
799  int is_ref_pkt = 1;
800  int ret, can_split = 1;
801  int stream_index = 0;
802 
804  oc = hls->vtt_avf;
805  stream_index = 0;
806  } else {
807  oc = hls->avf;
808  stream_index = pkt->stream_index;
809  }
810  if (hls->start_pts == AV_NOPTS_VALUE) {
811  hls->start_pts = pkt->pts;
812  hls->end_pts = pkt->pts;
813  }
814 
815  if (hls->has_video) {
816  can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
817  ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
818  is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
819  }
820  if (pkt->pts == AV_NOPTS_VALUE)
821  is_ref_pkt = can_split = 0;
822 
823  if (is_ref_pkt)
824  hls->duration = (double)(pkt->pts - hls->end_pts)
825  * st->time_base.num / st->time_base.den;
826 
827  if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
828  end_pts, AV_TIME_BASE_Q) >= 0) {
829  int64_t new_start_pos;
830  av_write_frame(oc, NULL); /* Flush any buffered data */
831 
832  new_start_pos = avio_tell(hls->avf->pb);
833  hls->size = new_start_pos - hls->start_pos;
834  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
835  hls->start_pos = new_start_pos;
836  if (ret < 0)
837  return ret;
838 
839  hls->end_pts = pkt->pts;
840  hls->duration = 0;
841 
842  if (hls->flags & HLS_SINGLE_FILE) {
843  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
844  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
845  hls->number++;
846  } else {
847  ff_format_io_close(s, &oc->pb);
848  if (hls->vtt_avf)
849  ff_format_io_close(s, &hls->vtt_avf->pb);
850 
851  ret = hls_start(s);
852  }
853 
854  if (ret < 0)
855  return ret;
856 
858  oc = hls->vtt_avf;
859  else
860  oc = hls->avf;
861 
862  if ((ret = hls_window(s, 0)) < 0)
863  return ret;
864  }
865 
866  ret = ff_write_chained(oc, stream_index, pkt, s, 0);
867 
868  return ret;
869 }
870 
872 {
873  HLSContext *hls = s->priv_data;
874  AVFormatContext *oc = hls->avf;
875  AVFormatContext *vtt_oc = hls->vtt_avf;
876 
877  av_write_trailer(oc);
878  if (oc->pb) {
879  hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
880  ff_format_io_close(s, &oc->pb);
881  hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
882  }
883 
884  if (vtt_oc) {
885  if (vtt_oc->pb)
886  av_write_trailer(vtt_oc);
887  hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
888  ff_format_io_close(s, &vtt_oc->pb);
889  }
890  av_freep(&hls->basename);
892 
893  if (vtt_oc) {
894  av_freep(&hls->vtt_basename);
895  av_freep(&hls->vtt_m3u8_name);
896  avformat_free_context(vtt_oc);
897  }
898 
899  hls->avf = NULL;
900  hls_window(s, 1);
901 
904  return 0;
905 }
906 
907 #define OFFSET(x) offsetof(HLSContext, x)
908 #define E AV_OPT_FLAG_ENCODING_PARAM
909 static const AVOption options[] = {
910  {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
911  {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
912  {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
913  {"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},
914  {"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},
915  {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
916  {"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},
917  {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
918  {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
919  {"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},
920  {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
921  {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
922  {"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"},
923  {"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"},
924  {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
925  {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
926  {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
927  {"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"},
928  {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
929  {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
930  {"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" },
931  {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
932  {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
933  {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
934 
935  { NULL },
936 };
937 
938 static const AVClass hls_class = {
939  .class_name = "hls muxer",
940  .item_name = av_default_item_name,
941  .option = options,
942  .version = LIBAVUTIL_VERSION_INT,
943 };
944 
945 
947  .name = "hls",
948  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
949  .extensions = "m3u8",
950  .priv_data_size = sizeof(HLSContext),
951  .audio_codec = AV_CODEC_ID_AAC,
952  .video_codec = AV_CODEC_ID_H264,
953  .subtitle_codec = AV_CODEC_ID_WEBVTT,
958  .priv_class = &hls_class,
959 };
float time
Definition: hlsenc.c:86
#define NULL
Definition: coverity.c:32
int wrap
Definition: hlsenc.c:88
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:122
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:147
char * basename
Definition: hlsenc.c:111
PlaylistType
Definition: hlsenc.c:68
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1577
AVOption.
Definition: opt.h:245
static int hls_write_trailer(struct AVFormatContext *s)
Definition: hlsenc.c:871
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:871
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
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:4493
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:1267
char * vtt_format_options_str
Definition: hlsenc.c:116
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:943
int64_t size
Definition: hlsenc.c:50
int num
numerator
Definition: rational.h:44
int use_localtime_mkdir
flag to mkdir dirname in timebased filename
Definition: hlsenc.c:94
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:34
#define AVIO_FLAG_READ
read-only
Definition: avio.h:606
#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:216
int version
Definition: avisynth_c.h:629
static AVPacket pkt
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:493
static int hls_window(AVFormatContext *s, int last)
Definition: hlsenc.c:409
static void set_http_options(AVDictionary **options, HLSContext *c)
Definition: hlsenc.c:403
Format I/O context.
Definition: avformat.h:1325
int max_nb_segments
Definition: hlsenc.c:87
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:317
#define av_malloc(s)
AVOptions.
miscellaneous OS support macros and functions.
static void hls_free_segments(HLSSegment *p)
Definition: hlsenc.c:392
HLSSegment * old_segments
Definition: hlsenc.c:109
int64_t end_pts
Definition: hlsenc.c:100
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5182
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4131
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1393
int64_t duration
Definition: movenc.c:63
#define AVERROR_EOF
End of file.
Definition: error.h:55
char * format_options_str
Definition: hlsenc.c:115
#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:598
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1344
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1620
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:909
static int hls_write_header(AVFormatContext *s)
Definition: hlsenc.c:637
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4059
#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:1539
#define OFFSET(x)
Definition: hlsenc.c:907
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
#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:202
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3935
AVDictionary * vtt_format_options
Definition: hlsenc.c:125
#define wrap(func)
Definition: neontest.h:65
simple assert() macros that are a bit more flexible than ISO C assert().
int has_video
Definition: hlsenc.c:97
double duration
Definition: hlsenc.c:101
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:52
int64_t recording_time
Definition: hlsenc.c:96
#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:112
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1594
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare 2 timestamps each in its own timebases.
Definition: mathematics.c:147
void * opaque
User data.
Definition: avformat.h:1805
char * baseurl
Definition: hlsenc.c:114
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:1381
int discontinuity_set
Definition: hlsenc.c:105
unsigned number
Definition: hlsenc.c:77
char key_string[KEYSIZE *2+1]
Definition: hlsenc.c:123
char filename[1024]
input or output filename
Definition: avformat.h:1401
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:246
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:99
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hlsenc.c:793
const char * name
Definition: avformat.h:522
HLSSegment * last_segment
Definition: hlsenc.c:108
#define E
Definition: hlsenc.c:908
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:107
AVDictionary * format_options
Definition: hlsenc.c:118
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
Read a whole line of text from AVIOContext.
Definition: aviobuf.c:759
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:550
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
Return in 'buf' the path with 'd' replaced by a number.
Definition: utils.c:4318
static int hls_delete_old_segments(HLSContext *hls)
Definition: hlsenc.c:131
int use_localtime
flag to expand filename with localtime
Definition: hlsenc.c:93
Stream structure.
Definition: avformat.h:876
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:179
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:53
int64_t start_sequence
Definition: hlsenc.c:79
int has_subtitle
Definition: hlsenc.c:98
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:252
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
AVIOContext * pb
I/O context.
Definition: avformat.h:1367
static int hls_encryption_start(AVFormatContext *s)
Definition: hlsenc.c:216
char * key_info_file
Definition: hlsenc.c:120
AVOutputFormat * oformat
Definition: hlsenc.c:80
char * method
Definition: hlsenc.c:127
int allowcache
Definition: hlsenc.c:95
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:509
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:69
Describe the class of an AVClass context structure.
Definition: log.h:67
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:124
#define snprintf
Definition: snprintf.h:34
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4067
int64_t sequence
Definition: hlsenc.c:78
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:121
static int flags
Definition: cpu.c:47
static int hls_mux_init(AVFormatContext *s)
Definition: hlsenc.c:268
int64_t size
Definition: hlsenc.c:103
uint32_t pl_type
Definition: hlsenc.c:90
int nb_entries
Definition: hlsenc.c:104
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:476
static double c[64]
const char * av_dirname(char *path)
Thread safe dirname.
Definition: avstring.c:251
uint32_t flags
Definition: hlsenc.c:89
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1037
int den
denominator
Definition: rational.h:45
#define KEYSIZE
Definition: hlsenc.c:42
int64_t start_pos
Definition: hlsenc.c:102
char * segment_filename
Definition: hlsenc.c:91
#define av_free(p)
char * vtt_m3u8_name
Definition: hlsenc.c:113
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:524
void * priv_data
Format private data.
Definition: avformat.h:1353
char * subtitle_filename
Definition: hlsenc.c:117
static const uint8_t start_sequence[]
Definition: rtpdec_h264.c:65
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:498
#define lrint
Definition: tablegen.h:53
AVFormatContext * avf
Definition: hlsenc.c:83
AVOutputFormat ff_hls_muxer
Definition: hlsenc.c:946
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1200
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:1228
AVOutputFormat * vtt_oformat
Definition: hlsenc.c:81
int stream_index
Definition: avcodec.h:1590
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:913
static const AVClass hls_class
Definition: hlsenc.c:938
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1883
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4444
This structure stores compressed data.
Definition: avcodec.h:1565
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: v4l2enc.c:86
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:1889
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1581
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
AVFormatContext * vtt_avf
Definition: hlsenc.c:84