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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 
136 static int mkdir_p(const char *path) {
137  int ret = 0;
138  char *temp = av_strdup(path);
139  char *pos = temp;
140  char tmp_ch = '\0';
141 
142  if (!path || !temp) {
143  return -1;
144  }
145 
146  if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
147  pos++;
148  } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
149  pos += 2;
150  }
151 
152  for ( ; *pos != '\0'; ++pos) {
153  if (*pos == '/' || *pos == '\\') {
154  tmp_ch = *pos;
155  *pos = '\0';
156  ret = mkdir(temp, 0755);
157  *pos = tmp_ch;
158  }
159  }
160 
161  if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
162  ret = mkdir(temp, 0755);
163  }
164 
165  av_free(temp);
166  return ret;
167 }
168 
170 
171  HLSSegment *segment, *previous_segment = NULL;
172  float playlist_duration = 0.0f;
173  int ret = 0, path_size, sub_path_size;
174  char *dirname = NULL, *p, *sub_path;
175  char *path = NULL;
176 
177  segment = hls->segments;
178  while (segment) {
179  playlist_duration += segment->duration;
180  segment = segment->next;
181  }
182 
183  segment = hls->old_segments;
184  while (segment) {
185  playlist_duration -= segment->duration;
186  hls->initial_prog_date_time += segment->duration;
187  previous_segment = segment;
188  segment = previous_segment->next;
189  if (playlist_duration <= -previous_segment->duration) {
190  previous_segment->next = NULL;
191  break;
192  }
193  }
194 
195  if (segment) {
196  if (hls->segment_filename) {
197  dirname = av_strdup(hls->segment_filename);
198  } else {
199  dirname = av_strdup(hls->avf->filename);
200  }
201  if (!dirname) {
202  ret = AVERROR(ENOMEM);
203  goto fail;
204  }
205  p = (char *)av_basename(dirname);
206  *p = '\0';
207  }
208 
209  while (segment) {
210  av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
211  segment->filename);
212  path_size = strlen(dirname) + strlen(segment->filename) + 1;
213  path = av_malloc(path_size);
214  if (!path) {
215  ret = AVERROR(ENOMEM);
216  goto fail;
217  }
218 
219  av_strlcpy(path, dirname, path_size);
220  av_strlcat(path, segment->filename, path_size);
221  if (unlink(path) < 0) {
222  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
223  path, strerror(errno));
224  }
225 
226  if (segment->sub_filename[0] != '\0') {
227  sub_path_size = strlen(dirname) + strlen(segment->sub_filename) + 1;
228  sub_path = av_malloc(sub_path_size);
229  if (!sub_path) {
230  ret = AVERROR(ENOMEM);
231  goto fail;
232  }
233 
234  av_strlcpy(sub_path, dirname, sub_path_size);
235  av_strlcat(sub_path, segment->sub_filename, sub_path_size);
236  if (unlink(sub_path) < 0) {
237  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
238  sub_path, strerror(errno));
239  }
240  av_free(sub_path);
241  }
242  av_freep(&path);
243  previous_segment = segment;
244  segment = previous_segment->next;
245  av_free(previous_segment);
246  }
247 
248 fail:
249  av_free(path);
250  av_free(dirname);
251 
252  return ret;
253 }
254 
256 {
257  HLSContext *hls = s->priv_data;
258  int ret;
259  AVIOContext *pb;
260  uint8_t key[KEYSIZE];
261 
262  if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
263  av_log(hls, AV_LOG_ERROR,
264  "error opening key info file %s\n", hls->key_info_file);
265  return ret;
266  }
267 
268  ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
269  hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
270 
271  ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
272  hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
273 
274  ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
275  hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
276 
277  ff_format_io_close(s, &pb);
278 
279  if (!*hls->key_uri) {
280  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
281  return AVERROR(EINVAL);
282  }
283 
284  if (!*hls->key_file) {
285  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
286  return AVERROR(EINVAL);
287  }
288 
289  if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
290  av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
291  return ret;
292  }
293 
294  ret = avio_read(pb, key, sizeof(key));
295  ff_format_io_close(s, &pb);
296  if (ret != sizeof(key)) {
297  av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
298  if (ret >= 0 || ret == AVERROR_EOF)
299  ret = AVERROR(EINVAL);
300  return ret;
301  }
302  ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
303 
304  return 0;
305 }
306 
307 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
308 {
309  int len = ff_get_line(s, buf, maxlen);
310  while (len > 0 && av_isspace(buf[len - 1]))
311  buf[--len] = '\0';
312  return len;
313 }
314 
316 {
317  HLSContext *hls = s->priv_data;
318  AVFormatContext *oc;
319  AVFormatContext *vtt_oc = NULL;
320  int i, ret;
321 
322  ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
323  if (ret < 0)
324  return ret;
325  oc = hls->avf;
326 
327  oc->oformat = hls->oformat;
329  oc->max_delay = s->max_delay;
330  oc->opaque = s->opaque;
331  oc->io_open = s->io_open;
332  oc->io_close = s->io_close;
333  av_dict_copy(&oc->metadata, s->metadata, 0);
334 
335  if(hls->vtt_oformat) {
337  if (ret < 0)
338  return ret;
339  vtt_oc = hls->vtt_avf;
340  vtt_oc->oformat = hls->vtt_oformat;
341  av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
342  }
343 
344  for (i = 0; i < s->nb_streams; i++) {
345  AVStream *st;
346  AVFormatContext *loc;
348  loc = vtt_oc;
349  else
350  loc = oc;
351 
352  if (!(st = avformat_new_stream(loc, NULL)))
353  return AVERROR(ENOMEM);
356  st->time_base = s->streams[i]->time_base;
357  }
358  hls->start_pos = 0;
359 
360  return 0;
361 }
362 
363 /* Create a new segment and append it to the segment list */
364 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
365  int64_t pos, int64_t size)
366 {
367  HLSSegment *en = av_malloc(sizeof(*en));
368  const char *filename;
369  int ret;
370 
371  if (!en)
372  return AVERROR(ENOMEM);
373 
374  filename = av_basename(hls->avf->filename);
375 
376  if (hls->use_localtime_mkdir) {
377  filename = hls->avf->filename;
378  }
379  av_strlcpy(en->filename, filename, sizeof(en->filename));
380 
381  if(hls->has_subtitle)
383  else
384  en->sub_filename[0] = '\0';
385 
386  en->duration = duration;
387  en->pos = pos;
388  en->size = size;
389  en->next = NULL;
390 
391  if (hls->key_info_file) {
392  av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
393  av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
394  }
395 
396  if (!hls->segments)
397  hls->segments = en;
398  else
399  hls->last_segment->next = en;
400 
401  hls->last_segment = en;
402 
403  // EVENT or VOD playlists imply sliding window cannot be used
404  if (hls->pl_type != PLAYLIST_TYPE_NONE)
405  hls->max_nb_segments = 0;
406 
407  if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
408  en = hls->segments;
409  hls->segments = en->next;
410  if (en && hls->flags & HLS_DELETE_SEGMENTS &&
411  !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
412  en->next = hls->old_segments;
413  hls->old_segments = en;
414  if ((ret = hls_delete_old_segments(hls)) < 0)
415  return ret;
416  } else
417  av_free(en);
418  } else
419  hls->nb_entries++;
420 
421  if (hls->max_seg_size > 0) {
422  return 0;
423  }
424  hls->sequence++;
425 
426  return 0;
427 }
428 
429 static int parse_playlist(AVFormatContext *s, const char *url)
430 {
431  HLSContext *hls = s->priv_data;
432  AVIOContext *in;
433  int ret = 0, is_segment = 0;
434  int64_t new_start_pos;
435  char line[1024];
436  const char *ptr;
437 
438  if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
441  return ret;
442 
443  read_chomp_line(in, line, sizeof(line));
444  if (strcmp(line, "#EXTM3U")) {
445  ret = AVERROR_INVALIDDATA;
446  goto fail;
447  }
448 
449  while (!avio_feof(in)) {
450  read_chomp_line(in, line, sizeof(line));
451  if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
452  hls->sequence = atoi(ptr);
453  } else if (av_strstart(line, "#EXTINF:", &ptr)) {
454  is_segment = 1;
455  hls->duration = atof(ptr);
456  } else if (av_strstart(line, "#", NULL)) {
457  continue;
458  } else if (line[0]) {
459  if (is_segment) {
460  is_segment = 0;
461  new_start_pos = avio_tell(hls->avf->pb);
462  hls->size = new_start_pos - hls->start_pos;
463  av_strlcpy(hls->avf->filename, line, sizeof(line));
464  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
465  if (ret < 0)
466  goto fail;
467  hls->start_pos = new_start_pos;
468  }
469  }
470  }
471 
472 fail:
473  avio_close(in);
474  return ret;
475 }
476 
478 {
479  HLSSegment *en;
480 
481  while(p) {
482  en = p;
483  p = p->next;
484  av_free(en);
485  }
486 }
487 
489 {
490  if (c->method)
491  av_dict_set(options, "method", c->method, 0);
492 }
493 
494 static int hls_window(AVFormatContext *s, int last)
495 {
496  HLSContext *hls = s->priv_data;
497  HLSSegment *en;
498  int target_duration = 0;
499  int ret = 0;
500  AVIOContext *out = NULL;
501  AVIOContext *sub_out = NULL;
502  char temp_filename[1024];
503  int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
504  int version = 3;
505  const char *proto = avio_find_protocol_name(s->filename);
506  int use_rename = proto && !strcmp(proto, "file");
507  static unsigned warned_non_file;
508  char *key_uri = NULL;
509  char *iv_string = NULL;
511  double prog_date_time = hls->initial_prog_date_time;
512  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
513 
514  if (byterange_mode) {
515  version = 4;
516  sequence = 0;
517  }
518 
519  if (!use_rename && !warned_non_file++)
520  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
521 
522  set_http_options(&options, hls);
523  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
524  if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
525  goto fail;
526 
527  for (en = hls->segments; en; en = en->next) {
528  if (target_duration < en->duration)
529  target_duration = ceil(en->duration);
530  }
531 
532  hls->discontinuity_set = 0;
533  avio_printf(out, "#EXTM3U\n");
534  avio_printf(out, "#EXT-X-VERSION:%d\n", version);
535  if (hls->allowcache == 0 || hls->allowcache == 1) {
536  avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
537  }
538  avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
539  avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
540  if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
541  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
542  } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
543  avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
544  }
545 
546  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
547  sequence);
548  if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
549  avio_printf(out, "#EXT-X-DISCONTINUITY\n");
550  hls->discontinuity_set = 1;
551  }
552  for (en = hls->segments; en; en = en->next) {
553  if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
554  av_strcasecmp(en->iv_string, iv_string))) {
555  avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
556  if (*en->iv_string)
557  avio_printf(out, ",IV=0x%s", en->iv_string);
558  avio_printf(out, "\n");
559  key_uri = en->key_uri;
560  iv_string = en->iv_string;
561  }
562 
563  if (hls->flags & HLS_ROUND_DURATIONS)
564  avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
565  else
566  avio_printf(out, "#EXTINF:%f,\n", en->duration);
567  if (byterange_mode)
568  avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
569  en->size, en->pos);
570  if (hls->flags & HLS_PROGRAM_DATE_TIME) {
571  time_t tt, wrongsecs;
572  int milli;
573  struct tm *tm, tmpbuf;
574  char buf0[128], buf1[128];
575  tt = (int64_t)prog_date_time;
576  milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
577  tm = localtime_r(&tt, &tmpbuf);
578  strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
579  if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
580  int tz_min, dst = tm->tm_isdst;
581  tm = gmtime_r(&tt, &tmpbuf);
582  tm->tm_isdst = dst;
583  wrongsecs = mktime(tm);
584  tz_min = (abs(wrongsecs - tt) + 30) / 60;
585  snprintf(buf1, sizeof(buf1),
586  "%c%02d%02d",
587  wrongsecs <= tt ? '+' : '-',
588  tz_min / 60,
589  tz_min % 60);
590  }
591  avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
592  prog_date_time += en->duration;
593  }
594  if (hls->baseurl)
595  avio_printf(out, "%s", hls->baseurl);
596  avio_printf(out, "%s\n", en->filename);
597  }
598 
599  if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
600  avio_printf(out, "#EXT-X-ENDLIST\n");
601 
602  if( hls->vtt_m3u8_name ) {
603  if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
604  goto fail;
605  avio_printf(sub_out, "#EXTM3U\n");
606  avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
607  if (hls->allowcache == 0 || hls->allowcache == 1) {
608  avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
609  }
610  avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
611  avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
612 
613  av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
614  sequence);
615 
616  for (en = hls->segments; en; en = en->next) {
617  avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
618  if (byterange_mode)
619  avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
620  en->size, en->pos);
621  if (hls->baseurl)
622  avio_printf(sub_out, "%s", hls->baseurl);
623  avio_printf(sub_out, "%s\n", en->sub_filename);
624  }
625 
626  if (last)
627  avio_printf(sub_out, "#EXT-X-ENDLIST\n");
628 
629  }
630 
631 fail:
632  av_dict_free(&options);
633  ff_format_io_close(s, &out);
634  ff_format_io_close(s, &sub_out);
635  if (ret >= 0 && use_rename)
636  ff_rename(temp_filename, s->filename, s);
637  return ret;
638 }
639 
641 {
642  HLSContext *c = s->priv_data;
643  AVFormatContext *oc = c->avf;
644  AVFormatContext *vtt_oc = c->vtt_avf;
646  char *filename, iv_string[KEYSIZE*2 + 1];
647  int err = 0;
648 
649  if (c->flags & HLS_SINGLE_FILE) {
650  av_strlcpy(oc->filename, c->basename,
651  sizeof(oc->filename));
652  if (c->vtt_basename)
653  av_strlcpy(vtt_oc->filename, c->vtt_basename,
654  sizeof(vtt_oc->filename));
655  } else if (c->max_seg_size > 0) {
656  if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
657  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
659  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
660  return AVERROR(EINVAL);
661  }
662  } else {
663  if (c->use_localtime) {
664  time_t now0;
665  struct tm *tm, tmpbuf;
666  time(&now0);
667  tm = localtime_r(&now0, &tmpbuf);
668  if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
669  av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
670  return AVERROR(EINVAL);
671  }
672 
673  if (c->use_localtime_mkdir) {
674  const char *dir;
675  char *fn_copy = av_strdup(oc->filename);
676  if (!fn_copy) {
677  return AVERROR(ENOMEM);
678  }
679  dir = av_dirname(fn_copy);
680  if (mkdir_p(dir) == -1 && errno != EEXIST) {
681  av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
682  av_free(fn_copy);
683  return AVERROR(errno);
684  }
685  av_free(fn_copy);
686  }
687  } else if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
688  c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
690  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename);
691  return AVERROR(EINVAL);
692  }
693  if( c->vtt_basename) {
694  if (av_get_frame_filename2(vtt_oc->filename, sizeof(vtt_oc->filename),
695  c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence,
697  av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
698  return AVERROR(EINVAL);
699  }
700  }
701  }
702  c->number++;
703 
704  set_http_options(&options, c);
705 
706  if (c->key_info_file) {
707  if ((err = hls_encryption_start(s)) < 0)
708  goto fail;
709  if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
710  < 0)
711  goto fail;
712  err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
713  if (!err)
714  snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
715  if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
716  goto fail;
717 
718  filename = av_asprintf("crypto:%s", oc->filename);
719  if (!filename) {
720  err = AVERROR(ENOMEM);
721  goto fail;
722  }
723  err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
724  av_free(filename);
725  av_dict_free(&options);
726  if (err < 0)
727  return err;
728  } else
729  if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
730  goto fail;
731  if (c->vtt_basename) {
732  set_http_options(&options, c);
733  if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
734  goto fail;
735  }
736  av_dict_free(&options);
737 
738  /* We only require one PAT/PMT per segment. */
739  if (oc->oformat->priv_class && oc->priv_data) {
740  char period[21];
741 
742  snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
743 
744  av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
745  av_opt_set(oc->priv_data, "sdt_period", period, 0);
746  av_opt_set(oc->priv_data, "pat_period", period, 0);
747  }
748 
749  if (c->vtt_basename) {
750  err = avformat_write_header(vtt_oc,NULL);
751  if (err < 0)
752  return err;
753  }
754 
755  return 0;
756 fail:
757  av_dict_free(&options);
758 
759  return err;
760 }
761 
763 {
764  HLSContext *hls = s->priv_data;
765  int ret, i;
766  char *p;
767  const char *pattern = "%d.ts";
768  const char *pattern_localtime_fmt = "-%s.ts";
769  const char *vtt_pattern = "%d.vtt";
771  int basename_size;
772  int vtt_basename_size;
773 
774  hls->sequence = hls->start_sequence;
775  hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
776  hls->start_pts = AV_NOPTS_VALUE;
777 
778  if (hls->flags & HLS_PROGRAM_DATE_TIME) {
779  time_t now0;
780  time(&now0);
781  hls->initial_prog_date_time = now0;
782  }
783 
784  if (hls->format_options_str) {
785  ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
786  if (ret < 0) {
787  av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
788  goto fail;
789  }
790  }
791 
792  for (i = 0; i < s->nb_streams; i++) {
793  hls->has_video +=
795  hls->has_subtitle +=
797  }
798 
799  if (hls->has_video > 1)
801  "More than a single video stream present, "
802  "expect issues decoding it.\n");
803 
804  hls->oformat = av_guess_format("mpegts", NULL, NULL);
805 
806  if (!hls->oformat) {
808  goto fail;
809  }
810 
811  if(hls->has_subtitle) {
812  hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
813  if (!hls->oformat) {
815  goto fail;
816  }
817  }
818 
819  if (hls->segment_filename) {
820  hls->basename = av_strdup(hls->segment_filename);
821  if (!hls->basename) {
822  ret = AVERROR(ENOMEM);
823  goto fail;
824  }
825  } else {
826  if (hls->flags & HLS_SINGLE_FILE)
827  pattern = ".ts";
828 
829  if (hls->use_localtime) {
830  basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
831  } else {
832  basename_size = strlen(s->filename) + strlen(pattern) + 1;
833  }
834  hls->basename = av_malloc(basename_size);
835  if (!hls->basename) {
836  ret = AVERROR(ENOMEM);
837  goto fail;
838  }
839 
840  av_strlcpy(hls->basename, s->filename, basename_size);
841 
842  p = strrchr(hls->basename, '.');
843  if (p)
844  *p = '\0';
845  if (hls->use_localtime) {
846  av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
847  } else {
848  av_strlcat(hls->basename, pattern, basename_size);
849  }
850  }
851 
852  if(hls->has_subtitle) {
853 
854  if (hls->flags & HLS_SINGLE_FILE)
855  vtt_pattern = ".vtt";
856  vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
857  hls->vtt_basename = av_malloc(vtt_basename_size);
858  if (!hls->vtt_basename) {
859  ret = AVERROR(ENOMEM);
860  goto fail;
861  }
862  hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
863  if (!hls->vtt_m3u8_name ) {
864  ret = AVERROR(ENOMEM);
865  goto fail;
866  }
867  av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
868  p = strrchr(hls->vtt_basename, '.');
869  if (p)
870  *p = '\0';
871 
872  if( hls->subtitle_filename ) {
873  strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
874  } else {
875  strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
876  av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
877  }
878  av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
879  }
880 
881  if ((ret = hls_mux_init(s)) < 0)
882  goto fail;
883 
884  if (hls->flags & HLS_APPEND_LIST) {
885  parse_playlist(s, s->filename);
886  if (hls->init_time > 0) {
887  av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
888  " hls_init_time value will have no effect\n");
889  hls->init_time = 0;
890  hls->recording_time = hls->time * AV_TIME_BASE;
891  }
892  }
893 
894  if ((ret = hls_start(s)) < 0)
895  goto fail;
896 
897  av_dict_copy(&options, hls->format_options, 0);
898  ret = avformat_write_header(hls->avf, &options);
899  if (av_dict_count(options)) {
900  av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
901  ret = AVERROR(EINVAL);
902  goto fail;
903  }
904  //av_assert0(s->nb_streams == hls->avf->nb_streams);
905  for (i = 0; i < s->nb_streams; i++) {
906  AVStream *inner_st;
907  AVStream *outer_st = s->streams[i];
908 
909  if (hls->max_seg_size > 0) {
910  if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
911  (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
912  av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
913  "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
914  outer_st->codecpar->bit_rate, hls->max_seg_size);
915  }
916  }
917 
918  if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
919  inner_st = hls->avf->streams[i];
920  else if (hls->vtt_avf)
921  inner_st = hls->vtt_avf->streams[0];
922  else {
923  /* We have a subtitle stream, when the user does not want one */
924  inner_st = NULL;
925  continue;
926  }
927  avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
928  }
929 fail:
930 
931  av_dict_free(&options);
932  if (ret < 0) {
933  av_freep(&hls->basename);
934  av_freep(&hls->vtt_basename);
935  if (hls->avf)
937  if (hls->vtt_avf)
939 
940  }
941  return ret;
942 }
943 
945 {
946  HLSContext *hls = s->priv_data;
947  AVFormatContext *oc = NULL;
948  AVStream *st = s->streams[pkt->stream_index];
949  int64_t end_pts = hls->recording_time * hls->number;
950  int is_ref_pkt = 1;
951  int ret, can_split = 1;
952  int stream_index = 0;
953 
954  if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
955  /* reset end_pts, hls->recording_time at end of the init hls list */
956  int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
957  int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
958  hls->recording_time = hls->time * AV_TIME_BASE;
959  end_pts = init_list_dur + after_init_list_dur ;
960  }
961 
963  oc = hls->vtt_avf;
964  stream_index = 0;
965  } else {
966  oc = hls->avf;
967  stream_index = pkt->stream_index;
968  }
969  if (hls->start_pts == AV_NOPTS_VALUE) {
970  hls->start_pts = pkt->pts;
971  hls->end_pts = pkt->pts;
972  }
973 
974  if (hls->has_video) {
975  can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
976  ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
977  is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
978  }
979  if (pkt->pts == AV_NOPTS_VALUE)
980  is_ref_pkt = can_split = 0;
981 
982  if (is_ref_pkt)
983  hls->duration = (double)(pkt->pts - hls->end_pts)
984  * st->time_base.num / st->time_base.den;
985 
986  if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
987  end_pts, AV_TIME_BASE_Q) >= 0) {
988  int64_t new_start_pos;
989  av_write_frame(oc, NULL); /* Flush any buffered data */
990 
991  new_start_pos = avio_tell(hls->avf->pb);
992  hls->size = new_start_pos - hls->start_pos;
993  ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
994  hls->start_pos = new_start_pos;
995  if (ret < 0)
996  return ret;
997 
998  hls->end_pts = pkt->pts;
999  hls->duration = 0;
1000 
1001  if (hls->flags & HLS_SINGLE_FILE) {
1002  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1003  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1004  hls->number++;
1005  } else if (hls->max_seg_size > 0) {
1006  if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1007  av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1008  if (hls->start_pos >= hls->max_seg_size) {
1009  hls->sequence++;
1010  ff_format_io_close(s, &oc->pb);
1011  if (hls->vtt_avf)
1012  ff_format_io_close(s, &hls->vtt_avf->pb);
1013  ret = hls_start(s);
1014  hls->start_pos = 0;
1015  /* When split segment by byte, the duration is short than hls_time,
1016  * so it is not enough one segment duration as hls_time, */
1017  hls->number--;
1018  }
1019  hls->number++;
1020  } else {
1021  ff_format_io_close(s, &oc->pb);
1022  if (hls->vtt_avf)
1023  ff_format_io_close(s, &hls->vtt_avf->pb);
1024 
1025  ret = hls_start(s);
1026  }
1027 
1028  if (ret < 0)
1029  return ret;
1030 
1032  oc = hls->vtt_avf;
1033  else
1034  oc = hls->avf;
1035 
1036  if ((ret = hls_window(s, 0)) < 0)
1037  return ret;
1038  }
1039 
1040  ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1041 
1042  return ret;
1043 }
1044 
1046 {
1047  HLSContext *hls = s->priv_data;
1048  AVFormatContext *oc = hls->avf;
1049  AVFormatContext *vtt_oc = hls->vtt_avf;
1050 
1051  av_write_trailer(oc);
1052  if (oc->pb) {
1053  hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1054  ff_format_io_close(s, &oc->pb);
1055  hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1056  }
1057 
1058  if (vtt_oc) {
1059  if (vtt_oc->pb)
1060  av_write_trailer(vtt_oc);
1061  hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1062  ff_format_io_close(s, &vtt_oc->pb);
1063  }
1064  av_freep(&hls->basename);
1066 
1067  hls->avf = NULL;
1068  hls_window(s, 1);
1069 
1070  if (vtt_oc) {
1071  av_freep(&hls->vtt_basename);
1072  av_freep(&hls->vtt_m3u8_name);
1073  avformat_free_context(vtt_oc);
1074  }
1075 
1078  return 0;
1079 }
1080 
1081 #define OFFSET(x) offsetof(HLSContext, x)
1082 #define E AV_OPT_FLAG_ENCODING_PARAM
1083 static const AVOption options[] = {
1084  {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1085  {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1086  {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1087  {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1088  {"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},
1089  {"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},
1090  {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1091  {"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},
1092  {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1093  {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1094  {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1095  {"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},
1096  {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1097  {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1098  {"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"},
1099  {"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"},
1100  {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1101  {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1102  {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1103  {"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"},
1104  {"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"},
1105  {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1106  {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1107  {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1108  {"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" },
1109  {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1110  {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1111  {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1112 
1113  { NULL },
1114 };
1115 
1116 static const AVClass hls_class = {
1117  .class_name = "hls muxer",
1118  .item_name = av_default_item_name,
1119  .option = options,
1120  .version = LIBAVUTIL_VERSION_INT,
1121 };
1122 
1123 
1125  .name = "hls",
1126  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1127  .extensions = "m3u8",
1128  .priv_data_size = sizeof(HLSContext),
1129  .audio_codec = AV_CODEC_ID_AAC,
1130  .video_codec = AV_CODEC_ID_H264,
1131  .subtitle_codec = AV_CODEC_ID_WEBVTT,
1136  .priv_class = &hls_class,
1137 };
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:1592
AVOption.
Definition: opt.h:246
static int hls_write_trailer(struct AVFormatContext *s)
Definition: hlsenc.c:1045
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:919
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
else temp
Definition: vf_mcdeint.c:259
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:4581
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:1365
char * vtt_format_options_str
Definition: hlsenc.c:120
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:956
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
static int mkdir_p(const char *path)
Definition: hlsenc.c:136
#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:494
static void set_http_options(AVDictionary **options, HLSContext *c)
Definition: hlsenc.c:488
Format I/O context.
Definition: avformat.h:1338
int max_nb_segments
Definition: hlsenc.c:90
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:364
#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:477
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:5293
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4214
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1406
int64_t duration
Definition: movenc.c:63
char * protocol_whitelist
',' separated list of allowed protocols.
Definition: avformat.h:1876
static int flags
Definition: log.c:57
#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:1357
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:4010
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1633
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:1083
double initial_prog_date_time
Definition: hlsenc.c:133
static int hls_write_header(AVFormatContext *s)
Definition: hlsenc.c:762
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4148
#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:1554
#define OFFSET(x)
Definition: hlsenc.c:1081
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:3977
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:2795
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:84
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:1607
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:1820
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:1394
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:1414
#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:521
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:944
const char * name
Definition: avformat.h:524
HLSSegment * last_segment
Definition: hlsenc.c:112
#define E
Definition: hlsenc.c:1082
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:307
static int hls_delete_old_segments(HLSContext *hls)
Definition: hlsenc.c:169
int use_localtime
flag to expand filename with localtime
Definition: hlsenc.c:96
Stream structure.
Definition: avformat.h:889
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:1380
static int hls_encryption_start(AVFormatContext *s)
Definition: hlsenc.c:255
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:4401
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:524
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
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:650
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:4150
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 hls_mux_init(AVFormatContext *s)
Definition: hlsenc.c:315
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
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:1050
int den
Denominator.
Definition: rational.h:60
static int parse_playlist(AVFormatContext *s, const char *url)
Definition: hlsenc.c:429
#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 int hls_start(AVFormatContext *s)
Definition: hlsenc.c:640
void * priv_data
Format private data.
Definition: avformat.h:1366
char * subtitle_filename
Definition: hlsenc.c:121
static AVCodec * c
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:1124
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1294
char * protocol_blacklist
',' separated list of disallowed protocols.
Definition: avformat.h:1911
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:1241
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:1603
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
static const AVClass hls_class
Definition: hlsenc.c:1116
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1898
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4532
This structure stores compressed data.
Definition: avcodec.h:1578
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:451
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1904
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1594
#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