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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),
67 } HLSFlags;
68 
69 typedef enum {
74 } PlaylistType;
75 
76 typedef struct HLSContext {
77  const AVClass *class; // Class for private options.
78  unsigned number;
79  int64_t sequence;
80  int64_t start_sequence;
83 
86 
87  float time; // Set by a private option.
88  int max_nb_segments; // Set by a private option.
89  int wrap; // Set by a private option.
90  uint32_t flags; // enum HLSFlags
91  uint32_t pl_type; // enum PlaylistType
93 
94  int use_localtime; ///< flag to expand filename with localtime
95  int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
97  int64_t recording_time;
98  int has_video;
100  int64_t start_pts;
101  int64_t end_pts;
102  double duration; // last segment duration computed so far, in seconds
103  int64_t start_pos; // last segment starting position
104  int64_t size; // last segment size
107 
111 
112  char *basename;
115  char *baseurl;
120 
124  char key_string[KEYSIZE*2 + 1];
125  char iv_string[KEYSIZE*2 + 1];
127 
128  char *method;
129 
130 } HLSContext;
131 
133 
134  HLSSegment *segment, *previous_segment = NULL;
135  float playlist_duration = 0.0f;
136  int ret = 0, path_size, sub_path_size;
137  char *dirname = NULL, *p, *sub_path;
138  char *path = NULL;
139 
140  segment = hls->segments;
141  while (segment) {
142  playlist_duration += segment->duration;
143  segment = segment->next;
144  }
145 
146  segment = hls->old_segments;
147  while (segment) {
148  playlist_duration -= segment->duration;
149  previous_segment = segment;
150  segment = previous_segment->next;
151  if (playlist_duration <= -previous_segment->duration) {
152  previous_segment->next = NULL;
153  break;
154  }
155  }
156 
157  if (segment) {
158  if (hls->segment_filename) {
159  dirname = av_strdup(hls->segment_filename);
160  } else {
161  dirname = av_strdup(hls->avf->filename);
162  }
163  if (!dirname) {
164  ret = AVERROR(ENOMEM);
165  goto fail;
166  }
167  p = (char *)av_basename(dirname);
168  *p = '\0';
169  }
170 
171  while (segment) {
172  av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
173  segment->filename);
174  path_size = strlen(dirname) + strlen(segment->filename) + 1;
175  path = av_malloc(path_size);
176  if (!path) {
177  ret = AVERROR(ENOMEM);
178  goto fail;
179  }
180 
181  av_strlcpy(path, dirname, path_size);
182  av_strlcat(path, segment->filename, path_size);
183  if (unlink(path) < 0) {
184  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
185  path, strerror(errno));
186  }
187 
188  if (segment->sub_filename[0] != '\0') {
189  sub_path_size = strlen(dirname) + strlen(segment->sub_filename) + 1;
190  sub_path = av_malloc(sub_path_size);
191  if (!sub_path) {
192  ret = AVERROR(ENOMEM);
193  goto fail;
194  }
195 
196  av_strlcpy(sub_path, dirname, sub_path_size);
197  av_strlcat(sub_path, segment->sub_filename, sub_path_size);
198  if (unlink(sub_path) < 0) {
199  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
200  sub_path, strerror(errno));
201  }
202  av_free(sub_path);
203  }
204  av_freep(&path);
205  previous_segment = segment;
206  segment = previous_segment->next;
207  av_free(previous_segment);
208  }
209 
210 fail:
211  av_free(path);
212  av_free(dirname);
213 
214  return ret;
215 }
216 
218 {
219  HLSContext *hls = s->priv_data;
220  int ret;
221  AVIOContext *pb;
222  uint8_t key[KEYSIZE];
223 
224  if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
225  av_log(hls, AV_LOG_ERROR,
226  "error opening key info file %s\n", hls->key_info_file);
227  return ret;
228  }
229 
230  ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
231  hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
232 
233  ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
234  hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
235 
236  ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
237  hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
238 
239  ff_format_io_close(s, &pb);
240 
241  if (!*hls->key_uri) {
242  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
243  return AVERROR(EINVAL);
244  }
245 
246  if (!*hls->key_file) {
247  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
248  return AVERROR(EINVAL);
249  }
250 
251  if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
252  av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
253  return ret;
254  }
255 
256  ret = avio_read(pb, key, sizeof(key));
257  ff_format_io_close(s, &pb);
258  if (ret != sizeof(key)) {
259  av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
260  if (ret >= 0 || ret == AVERROR_EOF)
261  ret = AVERROR(EINVAL);
262  return ret;
263  }
264  ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
265 
266  return 0;
267 }
268 
269 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
270 {
271  int len = ff_get_line(s, buf, maxlen);
272  while (len > 0 && av_isspace(buf[len - 1]))
273  buf[--len] = '\0';
274  return len;
275 }
276 
278 {
279  HLSContext *hls = s->priv_data;
280  AVFormatContext *oc;
281  AVFormatContext *vtt_oc = NULL;
282  int i, ret;
283 
284  ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
285  if (ret < 0)
286  return ret;
287  oc = hls->avf;
288 
289  oc->oformat = hls->oformat;
291  oc->max_delay = s->max_delay;
292  oc->opaque = s->opaque;
293  oc->io_open = s->io_open;
294  oc->io_close = s->io_close;
295  av_dict_copy(&oc->metadata, s->metadata, 0);
296 
297  if(hls->vtt_oformat) {
299  if (ret < 0)
300  return ret;
301  vtt_oc = hls->vtt_avf;
302  vtt_oc->oformat = hls->vtt_oformat;
303  av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
304  }
305 
306  for (i = 0; i < s->nb_streams; i++) {
307  AVStream *st;
308  AVFormatContext *loc;
310  loc = vtt_oc;
311  else
312  loc = oc;
313 
314  if (!(st = avformat_new_stream(loc, NULL)))
315  return AVERROR(ENOMEM);
318  st->time_base = s->streams[i]->time_base;
319  }
320  hls->start_pos = 0;
321 
322  return 0;
323 }
324 
325 /* Create a new segment and append it to the segment list */
326 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
327  int64_t pos, int64_t size)
328 {
329  HLSSegment *en = av_malloc(sizeof(*en));
330  char *tmp, *p;
331  const char *pl_dir, *filename;
332  int ret;
333 
334  if (!en)
335  return AVERROR(ENOMEM);
336 
337  filename = av_basename(hls->avf->filename);
338 
339  if (hls->use_localtime_mkdir) {
340  /* Possibly prefix with mkdir'ed subdir, if playlist share same
341  * base path. */
342  tmp = av_strdup(s->filename);
343  if (!tmp) {
344  av_free(en);
345  return AVERROR(ENOMEM);
346  }
347 
348  pl_dir = av_dirname(tmp);
349  p = hls->avf->filename;
350  if (strstr(p, pl_dir) == p)
351  filename = hls->avf->filename + strlen(pl_dir) + 1;
352  av_free(tmp);
353  }
354  av_strlcpy(en->filename, filename, sizeof(en->filename));
355 
356  if(hls->has_subtitle)
358  else
359  en->sub_filename[0] = '\0';
360 
361  en->duration = duration;
362  en->pos = pos;
363  en->size = size;
364  en->next = NULL;
365 
366  if (hls->key_info_file) {
367  av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
368  av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
369  }
370 
371  if (!hls->segments)
372  hls->segments = en;
373  else
374  hls->last_segment->next = en;
375 
376  hls->last_segment = en;
377 
378  // EVENT or VOD playlists imply sliding window cannot be used
379  if (hls->pl_type != PLAYLIST_TYPE_NONE)
380  hls->max_nb_segments = 0;
381 
382  if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
383  en = hls->segments;
384  hls->segments = en->next;
385  if (en && hls->flags & HLS_DELETE_SEGMENTS &&
386  !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
387  en->next = hls->old_segments;
388  hls->old_segments = en;
389  if ((ret = hls_delete_old_segments(hls)) < 0)
390  return ret;
391  } else
392  av_free(en);
393  } else
394  hls->nb_entries++;
395 
396  hls->sequence++;
397 
398  return 0;
399 }
400 
401 static int parse_playlist(AVFormatContext *s, const char *url)
402 {
403  HLSContext *hls = s->priv_data;
404  AVIOContext *in;
405  int ret = 0, is_segment = 0;
406  int64_t new_start_pos;
407  char line[1024];
408  const char *ptr;
409 
410  if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
413  return ret;
414 
415  read_chomp_line(in, line, sizeof(line));
416  if (strcmp(line, "#EXTM3U")) {
417  ret = AVERROR_INVALIDDATA;
418  goto fail;
419  }
420 
421  while (!avio_feof(in)) {
422  read_chomp_line(in, line, sizeof(line));
423  if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
424  hls->sequence = atoi(ptr);
425  } else if (av_strstart(line, "#EXTINF:", &ptr)) {
426  is_segment = 1;
427  hls->duration = atof(ptr);
428  } else if (av_strstart(line, "#", NULL)) {
429  continue;
430  } else if (line[0]) {
431  if (is_segment) {
432  is_segment = 0;
433  new_start_pos = avio_tell(hls->avf->pb);
434  hls->size = new_start_pos - hls->start_pos;
435  av_strlcpy(hls->avf->filename, line, sizeof(line));
436  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
437  if (ret < 0)
438  goto fail;
439  hls->start_pos = new_start_pos;
440  }
441  }
442  }
443 
444 fail:
445  avio_close(in);
446  return ret;
447 }
448 
450 {
451  HLSSegment *en;
452 
453  while(p) {
454  en = p;
455  p = p->next;
456  av_free(en);
457  }
458 }
459 
461 {
462  if (c->method)
463  av_dict_set(options, "method", c->method, 0);
464 }
465 
466 static int hls_window(AVFormatContext *s, int last)
467 {
468  HLSContext *hls = s->priv_data;
469  HLSSegment *en;
470  int target_duration = 0;
471  int ret = 0;
472  AVIOContext *out = NULL;
473  AVIOContext *sub_out = NULL;
474  char temp_filename[1024];
475  int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
476  int version = hls->flags & HLS_SINGLE_FILE ? 4 : 3;
477  const char *proto = avio_find_protocol_name(s->filename);
478  int use_rename = proto && !strcmp(proto, "file");
479  static unsigned warned_non_file;
480  char *key_uri = NULL;
481  char *iv_string = NULL;
483 
484  if (!use_rename && !warned_non_file++)
485  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporarly partial files\n");
486 
487  set_http_options(&options, hls);
488  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
489  if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
490  goto fail;
491 
492  for (en = hls->segments; en; en = en->next) {
493  if (target_duration < en->duration)
494  target_duration = ceil(en->duration);
495  }
496 
497  hls->discontinuity_set = 0;
498  avio_printf(out, "#EXTM3U\n");
499  avio_printf(out, "#EXT-X-VERSION:%d\n", version);
500  if (hls->allowcache == 0 || hls->allowcache == 1) {
501  avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
502  }
503  avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
504  avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
505  if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
506  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
507  } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
508  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
509  }
510 
511  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
512  sequence);
513  if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
514  avio_printf(out, "#EXT-X-DISCONTINUITY\n");
515  hls->discontinuity_set = 1;
516  }
517  for (en = hls->segments; en; en = en->next) {
518  if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
519  av_strcasecmp(en->iv_string, iv_string))) {
520  avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
521  if (*en->iv_string)
522  avio_printf(out, ",IV=0x%s", en->iv_string);
523  avio_printf(out, "\n");
524  key_uri = en->key_uri;
525  iv_string = en->iv_string;
526  }
527 
528  if (hls->flags & HLS_ROUND_DURATIONS)
529  avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
530  else
531  avio_printf(out, "#EXTINF:%f,\n", en->duration);
532  if (hls->flags & HLS_SINGLE_FILE)
533  avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
534  en->size, en->pos);
535  if (hls->baseurl)
536  avio_printf(out, "%s", hls->baseurl);
537  avio_printf(out, "%s\n", en->filename);
538  }
539 
540  if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
541  avio_printf(out, "#EXT-X-ENDLIST\n");
542 
543  if( hls->vtt_m3u8_name ) {
544  if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
545  goto fail;
546  avio_printf(sub_out, "#EXTM3U\n");
547  avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
548  if (hls->allowcache == 0 || hls->allowcache == 1) {
549  avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
550  }
551  avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
552  avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
553 
554  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
555  sequence);
556 
557  for (en = hls->segments; en; en = en->next) {
558  avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
559  if (hls->flags & HLS_SINGLE_FILE)
560  avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
561  en->size, en->pos);
562  if (hls->baseurl)
563  avio_printf(sub_out, "%s", hls->baseurl);
564  avio_printf(sub_out, "%s\n", en->sub_filename);
565  }
566 
567  if (last)
568  avio_printf(sub_out, "#EXT-X-ENDLIST\n");
569 
570  }
571 
572 fail:
573  av_dict_free(&options);
574  ff_format_io_close(s, &out);
575  ff_format_io_close(s, &sub_out);
576  if (ret >= 0 && use_rename)
577  ff_rename(temp_filename, s->filename, s);
578  return ret;
579 }
580 
582 {
583  HLSContext *c = s->priv_data;
584  AVFormatContext *oc = c->avf;
585  AVFormatContext *vtt_oc = c->vtt_avf;
587  char *filename, iv_string[KEYSIZE*2 + 1];
588  int err = 0;
589 
590  if (c->flags & HLS_SINGLE_FILE) {
591  av_strlcpy(oc->filename, c->basename,
592  sizeof(oc->filename));
593  if (c->vtt_basename)
594  av_strlcpy(vtt_oc->filename, c->vtt_basename,
595  sizeof(vtt_oc->filename));
596  } else {
597  if (c->use_localtime) {
598  time_t now0;
599  struct tm *tm, tmpbuf;
600  time(&now0);
601  tm = localtime_r(&now0, &tmpbuf);
602  if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
603  av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
604  return AVERROR(EINVAL);
605  }
606 
607  if (c->use_localtime_mkdir) {
608  const char *dir;
609  char *fn_copy = av_strdup(oc->filename);
610  if (!fn_copy) {
611  return AVERROR(ENOMEM);
612  }
613  dir = av_dirname(fn_copy);
614  if (mkdir(dir, 0777) == -1 && errno != EEXIST) {
615  av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
616  av_free(fn_copy);
617  return AVERROR(errno);
618  }
619  av_free(fn_copy);
620  }
621  } else if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
622  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
624  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try use -use_localtime 1 with it\n", c->basename);
625  return AVERROR(EINVAL);
626  }
627  if( c->vtt_basename) {
628  if (av_get_frame_filename2(vtt_oc->filename, sizeof(vtt_oc->filename),
629  c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence,
631  av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
632  return AVERROR(EINVAL);
633  }
634  }
635  }
636  c->number++;
637 
638  set_http_options(&options, c);
639 
640  if (c->key_info_file) {
641  if ((err = hls_encryption_start(s)) < 0)
642  goto fail;
643  if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
644  < 0)
645  goto fail;
646  err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
647  if (!err)
648  snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
649  if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
650  goto fail;
651 
652  filename = av_asprintf("crypto:%s", oc->filename);
653  if (!filename) {
654  err = AVERROR(ENOMEM);
655  goto fail;
656  }
657  err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
658  av_free(filename);
659  av_dict_free(&options);
660  if (err < 0)
661  return err;
662  } else
663  if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
664  goto fail;
665  if (c->vtt_basename) {
666  set_http_options(&options, c);
667  if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
668  goto fail;
669  }
670  av_dict_free(&options);
671 
672  /* We only require one PAT/PMT per segment. */
673  if (oc->oformat->priv_class && oc->priv_data) {
674  char period[21];
675 
676  snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
677 
678  av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
679  av_opt_set(oc->priv_data, "sdt_period", period, 0);
680  av_opt_set(oc->priv_data, "pat_period", period, 0);
681  }
682 
683  if (c->vtt_basename) {
684  err = avformat_write_header(vtt_oc,NULL);
685  if (err < 0)
686  return err;
687  }
688 
689  return 0;
690 fail:
691  av_dict_free(&options);
692 
693  return err;
694 }
695 
697 {
698  HLSContext *hls = s->priv_data;
699  int ret, i;
700  char *p;
701  const char *pattern = "%d.ts";
702  const char *pattern_localtime_fmt = "-%s.ts";
703  const char *vtt_pattern = "%d.vtt";
705  int basename_size;
706  int vtt_basename_size;
707 
708  hls->sequence = hls->start_sequence;
709  hls->recording_time = hls->time * AV_TIME_BASE;
710  hls->start_pts = AV_NOPTS_VALUE;
711 
712  if (hls->format_options_str) {
713  ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
714  if (ret < 0) {
715  av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
716  goto fail;
717  }
718  }
719 
720  for (i = 0; i < s->nb_streams; i++) {
721  hls->has_video +=
723  hls->has_subtitle +=
725  }
726 
727  if (hls->has_video > 1)
729  "More than a single video stream present, "
730  "expect issues decoding it.\n");
731 
732  hls->oformat = av_guess_format("mpegts", NULL, NULL);
733 
734  if (!hls->oformat) {
736  goto fail;
737  }
738 
739  if(hls->has_subtitle) {
740  hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
741  if (!hls->oformat) {
743  goto fail;
744  }
745  }
746 
747  if (hls->segment_filename) {
748  hls->basename = av_strdup(hls->segment_filename);
749  if (!hls->basename) {
750  ret = AVERROR(ENOMEM);
751  goto fail;
752  }
753  } else {
754  if (hls->flags & HLS_SINGLE_FILE)
755  pattern = ".ts";
756 
757  if (hls->use_localtime) {
758  basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
759  } else {
760  basename_size = strlen(s->filename) + strlen(pattern) + 1;
761  }
762  hls->basename = av_malloc(basename_size);
763  if (!hls->basename) {
764  ret = AVERROR(ENOMEM);
765  goto fail;
766  }
767 
768  av_strlcpy(hls->basename, s->filename, basename_size);
769 
770  p = strrchr(hls->basename, '.');
771  if (p)
772  *p = '\0';
773  if (hls->use_localtime) {
774  av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
775  } else {
776  av_strlcat(hls->basename, pattern, basename_size);
777  }
778  }
779 
780  if(hls->has_subtitle) {
781 
782  if (hls->flags & HLS_SINGLE_FILE)
783  vtt_pattern = ".vtt";
784  vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
785  hls->vtt_basename = av_malloc(vtt_basename_size);
786  if (!hls->vtt_basename) {
787  ret = AVERROR(ENOMEM);
788  goto fail;
789  }
790  hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
791  if (!hls->vtt_m3u8_name ) {
792  ret = AVERROR(ENOMEM);
793  goto fail;
794  }
795  av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
796  p = strrchr(hls->vtt_basename, '.');
797  if (p)
798  *p = '\0';
799 
800  if( hls->subtitle_filename ) {
801  strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
802  } else {
803  strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
804  av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
805  }
806  av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
807  }
808 
809  if ((ret = hls_mux_init(s)) < 0)
810  goto fail;
811 
812  if (hls->flags & HLS_APPEND_LIST) {
813  parse_playlist(s, s->filename);
814  }
815 
816  if ((ret = hls_start(s)) < 0)
817  goto fail;
818 
819  av_dict_copy(&options, hls->format_options, 0);
820  ret = avformat_write_header(hls->avf, &options);
821  if (av_dict_count(options)) {
822  av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
823  ret = AVERROR(EINVAL);
824  goto fail;
825  }
826  //av_assert0(s->nb_streams == hls->avf->nb_streams);
827  for (i = 0; i < s->nb_streams; i++) {
828  AVStream *inner_st;
829  AVStream *outer_st = s->streams[i];
830  if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
831  inner_st = hls->avf->streams[i];
832  else if (hls->vtt_avf)
833  inner_st = hls->vtt_avf->streams[0];
834  else {
835  /* We have a subtitle stream, when the user does not want one */
836  inner_st = NULL;
837  continue;
838  }
839  avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
840  }
841 fail:
842 
843  av_dict_free(&options);
844  if (ret < 0) {
845  av_freep(&hls->basename);
846  av_freep(&hls->vtt_basename);
847  if (hls->avf)
849  if (hls->vtt_avf)
851 
852  }
853  return ret;
854 }
855 
857 {
858  HLSContext *hls = s->priv_data;
859  AVFormatContext *oc = NULL;
860  AVStream *st = s->streams[pkt->stream_index];
861  int64_t end_pts = hls->recording_time * hls->number;
862  int is_ref_pkt = 1;
863  int ret, can_split = 1;
864  int stream_index = 0;
865 
867  oc = hls->vtt_avf;
868  stream_index = 0;
869  } else {
870  oc = hls->avf;
871  stream_index = pkt->stream_index;
872  }
873  if (hls->start_pts == AV_NOPTS_VALUE) {
874  hls->start_pts = pkt->pts;
875  hls->end_pts = pkt->pts;
876  }
877 
878  if (hls->has_video) {
879  can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
880  ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
881  is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
882  }
883  if (pkt->pts == AV_NOPTS_VALUE)
884  is_ref_pkt = can_split = 0;
885 
886  if (is_ref_pkt)
887  hls->duration = (double)(pkt->pts - hls->end_pts)
888  * st->time_base.num / st->time_base.den;
889 
890  if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
891  end_pts, AV_TIME_BASE_Q) >= 0) {
892  int64_t new_start_pos;
893  av_write_frame(oc, NULL); /* Flush any buffered data */
894 
895  new_start_pos = avio_tell(hls->avf->pb);
896  hls->size = new_start_pos - hls->start_pos;
897  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
898  hls->start_pos = new_start_pos;
899  if (ret < 0)
900  return ret;
901 
902  hls->end_pts = pkt->pts;
903  hls->duration = 0;
904 
905  if (hls->flags & HLS_SINGLE_FILE) {
906  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
907  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
908  hls->number++;
909  } else {
910  ff_format_io_close(s, &oc->pb);
911  if (hls->vtt_avf)
912  ff_format_io_close(s, &hls->vtt_avf->pb);
913 
914  ret = hls_start(s);
915  }
916 
917  if (ret < 0)
918  return ret;
919 
921  oc = hls->vtt_avf;
922  else
923  oc = hls->avf;
924 
925  if ((ret = hls_window(s, 0)) < 0)
926  return ret;
927  }
928 
929  ret = ff_write_chained(oc, stream_index, pkt, s, 0);
930 
931  return ret;
932 }
933 
935 {
936  HLSContext *hls = s->priv_data;
937  AVFormatContext *oc = hls->avf;
938  AVFormatContext *vtt_oc = hls->vtt_avf;
939 
940  av_write_trailer(oc);
941  if (oc->pb) {
942  hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
943  ff_format_io_close(s, &oc->pb);
944  hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
945  }
946 
947  if (vtt_oc) {
948  if (vtt_oc->pb)
949  av_write_trailer(vtt_oc);
950  hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
951  ff_format_io_close(s, &vtt_oc->pb);
952  }
953  av_freep(&hls->basename);
955 
956  if (vtt_oc) {
957  av_freep(&hls->vtt_basename);
958  av_freep(&hls->vtt_m3u8_name);
959  avformat_free_context(vtt_oc);
960  }
961 
962  hls->avf = NULL;
963  hls_window(s, 1);
964 
967  return 0;
968 }
969 
970 #define OFFSET(x) offsetof(HLSContext, x)
971 #define E AV_OPT_FLAG_ENCODING_PARAM
972 static const AVOption options[] = {
973  {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
974  {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
975  {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
976  {"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},
977  {"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},
978  {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
979  {"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},
980  {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
981  {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
982  {"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},
983  {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
984  {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
985  {"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"},
986  {"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"},
987  {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
988  {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
989  {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
990  {"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"},
991  {"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"},
992  {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
993  {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
994  {"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" },
995  {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
996  {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
997  {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
998 
999  { NULL },
1000 };
1001 
1002 static const AVClass hls_class = {
1003  .class_name = "hls muxer",
1004  .item_name = av_default_item_name,
1005  .option = options,
1006  .version = LIBAVUTIL_VERSION_INT,
1007 };
1008 
1009 
1011  .name = "hls",
1012  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1013  .extensions = "m3u8",
1014  .priv_data_size = sizeof(HLSContext),
1015  .audio_codec = AV_CODEC_ID_AAC,
1016  .video_codec = AV_CODEC_ID_H264,
1017  .subtitle_codec = AV_CODEC_ID_WEBVTT,
1022  .priv_class = &hls_class,
1023 };
float time
Definition: hlsenc.c:87
#define NULL
Definition: coverity.c:32
int wrap
Definition: hlsenc.c:89
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:123
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:112
PlaylistType
Definition: hlsenc.c:69
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1579
AVOption.
Definition: opt.h:245
static int hls_write_trailer(struct AVFormatContext *s)
Definition: hlsenc.c:934
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:880
#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:4504
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:1276
char * vtt_format_options_str
Definition: hlsenc.c:117
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:945
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:95
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:466
static void set_http_options(AVDictionary **options, HLSContext *c)
Definition: hlsenc.c:460
Format I/O context.
Definition: avformat.h:1327
int max_nb_segments
Definition: hlsenc.c:88
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:326
#define av_malloc(s)
AVOptions.
miscellaneous OS support macros and functions.
static void hls_free_segments(HLSSegment *p)
Definition: hlsenc.c:449
HLSSegment * old_segments
Definition: hlsenc.c:110
int64_t end_pts
Definition: hlsenc.c:101
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5199
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4137
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1395
int64_t duration
Definition: movenc.c:63
char * protocol_whitelist
',' separated list of allowed protocols.
Definition: avformat.h:1863
#define AVERROR_EOF
End of file.
Definition: error.h:55
char * format_options_str
Definition: hlsenc.c:116
#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:1346
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1622
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:972
static int hls_write_header(AVFormatContext *s)
Definition: hlsenc.c:696
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4065
#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:1541
#define OFFSET(x)
Definition: hlsenc.c:970
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:3949
AVDictionary * vtt_format_options
Definition: hlsenc.c:126
#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:98
double duration
Definition: hlsenc.c:102
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:52
#define AV_FRAME_FILENAME_FLAGS_MULTIPLE
Allow multiple d.
Definition: avformat.h:2739
int64_t recording_time
Definition: hlsenc.c:97
#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:113
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1596
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:1807
char * baseurl
Definition: hlsenc.c:115
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:1383
int discontinuity_set
Definition: hlsenc.c:106
unsigned number
Definition: hlsenc.c:78
char key_string[KEYSIZE *2+1]
Definition: hlsenc.c:124
char filename[1024]
input or output filename
Definition: avformat.h:1403
#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:100
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hlsenc.c:856
const char * name
Definition: avformat.h:524
HLSSegment * last_segment
Definition: hlsenc.c:109
#define E
Definition: hlsenc.c:971
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:108
AVDictionary * format_options
Definition: hlsenc.c:119
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:269
static int hls_delete_old_segments(HLSContext *hls)
Definition: hlsenc.c:132
int use_localtime
flag to expand filename with localtime
Definition: hlsenc.c:94
Stream structure.
Definition: avformat.h:878
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:80
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
int has_subtitle
Definition: hlsenc.c:99
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:254
AVIOContext * pb
I/O context.
Definition: avformat.h:1369
static int hls_encryption_start(AVFormatContext *s)
Definition: hlsenc.c:217
char * key_info_file
Definition: hlsenc.c:121
AVOutputFormat * oformat
Definition: hlsenc.c:81
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:128
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:4324
void * buf
Definition: avisynth_c.h:690
int allowcache
Definition: hlsenc.c:96
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:70
Describe the class of an AVClass context structure.
Definition: log.h:67
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:125
#define snprintf
Definition: snprintf.h:34
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4073
int64_t sequence
Definition: hlsenc.c:79
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:122
static int flags
Definition: cpu.c:47
static int hls_mux_init(AVFormatContext *s)
Definition: hlsenc.c:277
int64_t size
Definition: hlsenc.c:104
uint32_t pl_type
Definition: hlsenc.c:91
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:105
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:90
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1039
int den
Denominator.
Definition: rational.h:60
static int parse_playlist(AVFormatContext *s, const char *url)
Definition: hlsenc.c:401
#define KEYSIZE
Definition: hlsenc.c:42
int64_t start_pos
Definition: hlsenc.c:103
char * segment_filename
Definition: hlsenc.c:92
#define av_free(p)
int len
char * vtt_m3u8_name
Definition: hlsenc.c:114
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:581
void * priv_data
Format private data.
Definition: avformat.h:1355
char * subtitle_filename
Definition: hlsenc.c:118
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:84
AVOutputFormat ff_hls_muxer
Definition: hlsenc.c:1010
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1209
char * protocol_blacklist
',' separated list of disallowed protocols.
Definition: avformat.h:1898
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:1230
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:328
AVOutputFormat * vtt_oformat
Definition: hlsenc.c:82
int stream_index
Definition: avcodec.h:1592
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:915
static const AVClass hls_class
Definition: hlsenc.c:1002
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1885
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4455
This structure stores compressed data.
Definition: avcodec.h:1567
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:1891
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1583
#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:85