FFmpeg  4.4
hlsenc.c
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1 /*
2  * Apple HTTP Live Streaming segmenter
3  * Copyright (c) 2012, Luca Barbato
4  * Copyright (c) 2017 Akamai Technologies, Inc.
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "config.h"
24 #include <float.h>
25 #include <stdint.h>
26 #if HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 
30 #if CONFIG_GCRYPT
31 #include <gcrypt.h>
32 #elif CONFIG_OPENSSL
33 #include <openssl/rand.h>
34 #endif
35 
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time.h"
46 
47 #include "avformat.h"
48 #include "avio_internal.h"
49 #include "avc.h"
50 #if CONFIG_HTTP_PROTOCOL
51 #include "http.h"
52 #endif
53 #include "hlsplaylist.h"
54 #include "internal.h"
55 #include "os_support.h"
56 
57 typedef enum {
64 
65 typedef enum {
69 
70 #define KEYSIZE 16
71 #define LINE_BUFFER_SIZE MAX_URL_SIZE
72 #define HLS_MICROSECOND_UNIT 1000000
73 #define BUFSIZE (16 * 1024)
74 #define POSTFIX_PATTERN "_%d"
75 
76 typedef struct HLSSegment {
79  double duration; /* in seconds */
80  int discont;
81  int64_t pos;
82  int64_t size;
83  int64_t keyframe_pos;
84  int64_t keyframe_size;
85  unsigned var_stream_idx;
86 
88  char iv_string[KEYSIZE*2 + 1];
89 
90  struct HLSSegment *next;
92 } HLSSegment;
93 
94 typedef enum HLSFlags {
95  // Generate a single media file and use byte ranges in the playlist.
96  HLS_SINGLE_FILE = (1 << 0),
97  HLS_DELETE_SEGMENTS = (1 << 1),
98  HLS_ROUND_DURATIONS = (1 << 2),
99  HLS_DISCONT_START = (1 << 3),
100  HLS_OMIT_ENDLIST = (1 << 4),
101  HLS_SPLIT_BY_TIME = (1 << 5),
102  HLS_APPEND_LIST = (1 << 6),
104  HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
105  HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
106  HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
107  HLS_TEMP_FILE = (1 << 11),
108  HLS_PERIODIC_REKEY = (1 << 12),
110  HLS_I_FRAMES_ONLY = (1 << 14),
111 } HLSFlags;
112 
113 typedef enum {
116 } SegmentType;
117 
118 typedef struct VariantStream {
119  unsigned var_stream_idx;
120  unsigned number;
121  int64_t sequence;
130 
133 
138  double dpp; // duration per packet
139  int64_t start_pts;
140  int64_t end_pts;
141  int64_t video_lastpos;
144  double duration; // last segment duration computed so far, in seconds
145  int64_t start_pos; // last segment starting position
146  int64_t size; // last segment size
151 
155 
157  char *basename;
160  char *m3u8_name;
161 
163  char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
164 
167 
169 
172  char key_string[KEYSIZE*2 + 1];
173  char iv_string[KEYSIZE*2 + 1];
174 
176  char codec_attr[128];
178  unsigned int nb_streams;
179  int m3u8_created; /* status of media play-list creation */
180  int is_default; /* default status of audio group */
181  const char *language; /* audio lauguage name */
182  const char *agroup; /* audio group name */
183  const char *sgroup; /* subtitle group name */
184  const char *ccgroup; /* closed caption group name */
185  const char *varname; /* variant name */
186 } VariantStream;
187 
188 typedef struct ClosedCaptionsStream {
189  const char *ccgroup; /* closed caption group name */
190  const char *instreamid; /* closed captions INSTREAM-ID */
191  const char *language; /* closed captions langauge */
193 
194 typedef struct HLSContext {
195  const AVClass *class; // Class for private options.
196  int64_t start_sequence;
197  uint32_t start_sequence_source_type; // enum StartSequenceSourceType
198 
199  int64_t time; // Set by a private option.
200  int64_t init_time; // Set by a private option.
201  int max_nb_segments; // Set by a private option.
202  int hls_delete_threshold; // Set by a private option.
203 #if FF_API_HLS_WRAP
204  int wrap; // Set by a private option.
205 #endif
206  uint32_t flags; // enum HLSFlags
207  uint32_t pl_type; // enum PlaylistType
211  int resend_init_file; ///< resend init file into disk after refresh m3u8
212 
213  int use_localtime; ///< flag to expand filename with localtime
214  int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
216  int64_t recording_time;
217  int64_t max_seg_size; // every segment file max size
218 
219  char *baseurl;
223 
224  int encrypt;
225  char *key;
226  char *key_url;
227  char *iv;
230 
234  char key_string[KEYSIZE*2 + 1];
235  char iv_string[KEYSIZE*2 + 1];
237 
238  char *method;
239  char *user_agent;
240 
242  unsigned int nb_varstreams;
244  unsigned int nb_ccstreams;
245 
246  int master_m3u8_created; /* status of master play-list creation */
247  char *master_m3u8_url; /* URL of the master m3u8 file */
248  int version; /* HLS version */
249  char *var_stream_map; /* user specified variant stream map string */
250  char *cc_stream_map; /* user specified closed caption streams map string */
252  unsigned int master_publish_rate;
253  int http_persistent;
256  int64_t timeout;
258  char *headers;
259  int has_default_key; /* has DEFAULT field of var_stream_map */
260  int has_video_m3u8; /* has video stream m3u8 list */
261 } HLSContext;
262 
263 static int strftime_expand(const char *fmt, char **dest)
264 {
265  int r = 1;
266  time_t now0;
267  struct tm *tm, tmpbuf;
268  char *buf;
269 
270  buf = av_mallocz(MAX_URL_SIZE);
271  if (!buf)
272  return AVERROR(ENOMEM);
273 
274  time(&now0);
275  tm = localtime_r(&now0, &tmpbuf);
276  r = strftime(buf, MAX_URL_SIZE, fmt, tm);
277  if (!r) {
278  av_free(buf);
279  return AVERROR(EINVAL);
280  }
281  *dest = buf;
282 
283  return r;
284 }
285 
286 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
288 {
289  HLSContext *hls = s->priv_data;
290  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
291  int err = AVERROR_MUXER_NOT_FOUND;
292  if (!*pb || !http_base_proto || !hls->http_persistent) {
293  err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
294 #if CONFIG_HTTP_PROTOCOL
295  } else {
296  URLContext *http_url_context = ffio_geturlcontext(*pb);
297  av_assert0(http_url_context);
298  err = ff_http_do_new_request(http_url_context, filename);
299  if (err < 0)
300  ff_format_io_close(s, pb);
301 
302 #endif
303  }
304  return err;
305 }
306 
307 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
308 {
309  HLSContext *hls = s->priv_data;
310  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
311  int ret = 0;
312  if (!*pb)
313  return ret;
314  if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
315  ff_format_io_close(s, pb);
316 #if CONFIG_HTTP_PROTOCOL
317  } else {
318  URLContext *http_url_context = ffio_geturlcontext(*pb);
319  av_assert0(http_url_context);
320  avio_flush(*pb);
321  ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
322  ret = ff_http_get_shutdown_status(http_url_context);
323 #endif
324  }
325  return ret;
326 }
327 
329 {
330  int http_base_proto = ff_is_http_proto(s->url);
331 
332  if (c->method) {
333  av_dict_set(options, "method", c->method, 0);
334  } else if (http_base_proto) {
335  av_dict_set(options, "method", "PUT", 0);
336  }
337  if (c->user_agent)
338  av_dict_set(options, "user_agent", c->user_agent, 0);
339  if (c->http_persistent)
340  av_dict_set_int(options, "multiple_requests", 1, 0);
341  if (c->timeout >= 0)
342  av_dict_set_int(options, "timeout", c->timeout, 0);
343  if (c->headers)
344  av_dict_set(options, "headers", c->headers, 0);
345 }
346 
348 {
349  int codec_strlen = strlen(vs->codec_attr);
350  char attr[32];
351 
353  return;
355  return;
356 
357  if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
358  uint8_t *data = st->codecpar->extradata;
359  if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
360  snprintf(attr, sizeof(attr),
361  "avc1.%02x%02x%02x", data[5], data[6], data[7]);
362  } else {
363  goto fail;
364  }
365  } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
366  uint8_t *data = st->codecpar->extradata;
368  int level = FF_LEVEL_UNKNOWN;
369 
370  if (st->codecpar->profile != FF_PROFILE_UNKNOWN)
371  profile = st->codecpar->profile;
372  if (st->codecpar->level != FF_LEVEL_UNKNOWN)
373  level = st->codecpar->level;
374 
375  /* check the boundary of data which from current position is small than extradata_size */
376  while (data && (data - st->codecpar->extradata + 19) < st->codecpar->extradata_size) {
377  /* get HEVC SPS NAL and seek to profile_tier_level */
378  if (!(data[0] | data[1] | data[2]) && data[3] == 1 && ((data[4] & 0x7E) == 0x42)) {
379  uint8_t *rbsp_buf;
380  int remain_size = 0;
381  int rbsp_size = 0;
382  /* skip start code + nalu header */
383  data += 6;
384  /* process by reference General NAL unit syntax */
385  remain_size = st->codecpar->extradata_size - (data - st->codecpar->extradata);
386  rbsp_buf = ff_nal_unit_extract_rbsp(data, remain_size, &rbsp_size, 0);
387  if (!rbsp_buf)
388  return;
389  if (rbsp_size < 13) {
390  av_freep(&rbsp_buf);
391  break;
392  }
393  /* skip sps_video_parameter_set_id u(4),
394  * sps_max_sub_layers_minus1 u(3),
395  * and sps_temporal_id_nesting_flag u(1) */
396  profile = rbsp_buf[1] & 0x1f;
397  /* skip 8 + 8 + 32 + 4 + 43 + 1 bit */
398  level = rbsp_buf[12];
399  av_freep(&rbsp_buf);
400  break;
401  }
402  data++;
403  }
404  if (st->codecpar->codec_tag == MKTAG('h','v','c','1') &&
406  level != FF_LEVEL_UNKNOWN) {
407  snprintf(attr, sizeof(attr), "%s.%d.4.L%d.B01", av_fourcc2str(st->codecpar->codec_tag), profile, level);
408  } else
409  goto fail;
410  } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
411  snprintf(attr, sizeof(attr), "mp4a.40.33");
412  } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
413  snprintf(attr, sizeof(attr), "mp4a.40.34");
414  } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
415  /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
416  snprintf(attr, sizeof(attr), "mp4a.40.2");
417  } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
418  snprintf(attr, sizeof(attr), "ac-3");
419  } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
420  snprintf(attr, sizeof(attr), "ec-3");
421  } else {
422  goto fail;
423  }
424  // Don't write the same attribute multiple times
425  if (!av_stristr(vs->codec_attr, attr)) {
426  snprintf(vs->codec_attr + codec_strlen,
427  sizeof(vs->codec_attr) - codec_strlen,
428  "%s%s", codec_strlen ? "," : "", attr);
429  }
430  return;
431 
432 fail:
433  vs->codec_attr[0] = '\0';
435  return;
436 }
437 
438 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
439 {
440  const char *p;
441  char c;
442  int addchar_count;
443  int found_count = 0;
444  AVBPrint buf;
445  int ret;
446 
448 
449  p = filename;
450  for (;;) {
451  c = *p;
452  if (c == '\0')
453  break;
454  if (c == '%' && *(p+1) == '%') // %%
455  addchar_count = 2;
456  else if (c == '%' && *(p+1) == placeholder) {
457  av_bprintf(&buf, "%s", datastring);
458  p += 2;
459  addchar_count = 0;
460  found_count ++;
461  } else
462  addchar_count = 1;
463 
464  if (addchar_count > 0) {
465  av_bprint_append_data(&buf, p, addchar_count);
466  p += addchar_count;
467  }
468  }
469  if (!av_bprint_is_complete(&buf)) {
470  av_bprint_finalize(&buf, NULL);
471  return AVERROR(ENOMEM);
472  }
473  if ((ret = av_bprint_finalize(&buf, s)) < 0)
474  return ret;
475  return found_count;
476 }
477 
478 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
479 {
480  const char *p;
481  char c;
482  int nd, addchar_count;
483  int found_count = 0;
484  AVBPrint buf;
485  int ret;
486 
488 
489  p = filename;
490  for (;;) {
491  c = *p;
492  if (c == '\0')
493  break;
494  if (c == '%' && *(p+1) == '%') // %%
495  addchar_count = 2;
496  else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
497  nd = 0;
498  addchar_count = 1;
499  while (av_isdigit(*(p + addchar_count))) {
500  nd = nd * 10 + *(p + addchar_count) - '0';
501  addchar_count++;
502  }
503 
504  if (*(p + addchar_count) == placeholder) {
505  av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
506  p += (addchar_count + 1);
507  addchar_count = 0;
508  found_count++;
509  }
510 
511  } else
512  addchar_count = 1;
513 
514  av_bprint_append_data(&buf, p, addchar_count);
515  p += addchar_count;
516  }
517  if (!av_bprint_is_complete(&buf)) {
518  av_bprint_finalize(&buf, NULL);
519  return AVERROR(ENOMEM);
520  }
521  if ((ret = av_bprint_finalize(&buf, s)) < 0)
522  return ret;
523  return found_count;
524 }
525 
526 static void write_styp(AVIOContext *pb)
527 {
528  avio_wb32(pb, 24);
529  ffio_wfourcc(pb, "styp");
530  ffio_wfourcc(pb, "msdh");
531  avio_wb32(pb, 0); /* minor */
532  ffio_wfourcc(pb, "msdh");
533  ffio_wfourcc(pb, "msix");
534 }
535 
536 static int flush_dynbuf(VariantStream *vs, int *range_length)
537 {
538  AVFormatContext *ctx = vs->avf;
539 
540  if (!ctx->pb) {
541  return AVERROR(EINVAL);
542  }
543 
544  // flush
546 
547  // write out to file
548  *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
549  ctx->pb = NULL;
550  avio_write(vs->out, vs->temp_buffer, *range_length);
551  avio_flush(vs->out);
552 
553  // re-open buffer
554  return avio_open_dyn_buf(&ctx->pb);
555 }
556 
557 static void reflush_dynbuf(VariantStream *vs, int *range_length)
558 {
559  // re-open buffer
560  avio_write(vs->out, vs->temp_buffer, *range_length);
561 }
562 
563 #if HAVE_DOS_PATHS
564 #define SEPARATOR '\\'
565 #else
566 #define SEPARATOR '/'
567 #endif
568 
570  const char *path, const char *proto)
571 {
572  if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
573  AVDictionary *opt = NULL;
574  AVIOContext *out = NULL;
575  int ret;
576  av_dict_set(&opt, "method", "DELETE", 0);
577  ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
578  av_dict_free(&opt);
579  if (ret < 0)
580  return hls->ignore_io_errors ? 1 : ret;
581  ff_format_io_close(avf, &out);
582  } else if (unlink(path) < 0) {
583  av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
584  path, strerror(errno));
585  }
586  return 0;
587 }
588 
590  VariantStream *vs)
591 {
592 
593  HLSSegment *segment, *previous_segment = NULL;
594  float playlist_duration = 0.0f;
595  int ret = 0;
596  int segment_cnt = 0;
597  AVBPrint path;
598  const char *dirname = NULL;
599  char *dirname_r = NULL;
600  char *dirname_repl = NULL;
601  const char *vtt_dirname = NULL;
602  char *vtt_dirname_r = NULL;
603  const char *proto = NULL;
604 
606 
607  segment = vs->segments;
608  while (segment) {
609  playlist_duration += segment->duration;
610  segment = segment->next;
611  }
612 
613  segment = vs->old_segments;
614  segment_cnt = 0;
615  while (segment) {
616  playlist_duration -= segment->duration;
617  previous_segment = segment;
618  segment = previous_segment->next;
619  segment_cnt++;
620  if (playlist_duration <= -previous_segment->duration) {
621  previous_segment->next = NULL;
622  break;
623  }
624  if (segment_cnt >= hls->hls_delete_threshold) {
625  previous_segment->next = NULL;
626  break;
627  }
628  }
629 
630  if (segment && !hls->use_localtime_mkdir) {
631  dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
632  dirname = av_dirname(dirname_r);
633  }
634 
635  /* if %v is present in the file's directory
636  * all segment belongs to the same variant, so do it only once before the loop*/
637  if (dirname && av_stristr(dirname, "%v")) {
638  if (!vs->varname) {
639  if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
640  ret = AVERROR(EINVAL);
641  goto fail;
642  }
643  } else {
644  if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
645  ret = AVERROR(EINVAL);
646  goto fail;
647  }
648  }
649 
650  dirname = dirname_repl;
651  }
652 
653  while (segment) {
654  av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
655  segment->filename);
656  if (!hls->use_localtime_mkdir) // segment->filename contains basename only
657  av_bprintf(&path, "%s%c", dirname, SEPARATOR);
658  av_bprintf(&path, "%s", segment->filename);
659 
660  if (!av_bprint_is_complete(&path)) {
661  ret = AVERROR(ENOMEM);
662  goto fail;
663  }
664 
665  proto = avio_find_protocol_name(s->url);
666  if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
667  goto fail;
668 
669  if ((segment->sub_filename[0] != '\0')) {
670  vtt_dirname_r = av_strdup(vs->vtt_avf->url);
671  vtt_dirname = av_dirname(vtt_dirname_r);
672 
673  av_bprint_clear(&path);
674  av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
675  segment->sub_filename);
676  av_freep(&vtt_dirname_r);
677 
678  if (!av_bprint_is_complete(&path)) {
679  ret = AVERROR(ENOMEM);
680  goto fail;
681  }
682 
683  if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
684  goto fail;
685  }
686  av_bprint_clear(&path);
687  previous_segment = segment;
688  segment = previous_segment->next;
689  av_freep(&previous_segment);
690  }
691 
692 fail:
693  av_bprint_finalize(&path, NULL);
694  av_freep(&dirname_r);
695  av_freep(&dirname_repl);
696 
697  return ret;
698 }
699 
700 static int randomize(uint8_t *buf, int len)
701 {
702 #if CONFIG_GCRYPT
703  gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
704  return 0;
705 #elif CONFIG_OPENSSL
706  if (RAND_bytes(buf, len))
707  return 0;
708 #else
709  return AVERROR(ENOSYS);
710 #endif
711  return AVERROR(EINVAL);
712 }
713 
715 {
716  HLSContext *hls = s->priv_data;
717  int ret;
718  int len;
719  AVIOContext *pb;
721  char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
722 
723  len = strlen(key_basename_source) + 4 + 1;
724  hls->key_basename = av_mallocz(len);
725  if (!hls->key_basename)
726  return AVERROR(ENOMEM);
727 
728  av_strlcpy(hls->key_basename, key_basename_source, len);
729  av_strlcat(hls->key_basename, ".key", len);
730 
731  if (hls->key_url) {
732  av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
733  av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
734  } else {
735  av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
736  av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
737  }
738 
739  if (!*hls->iv_string) {
740  uint8_t iv[16] = { 0 };
741  char buf[33];
742 
743  if (!hls->iv) {
744  AV_WB64(iv + 8, vs->sequence);
745  } else {
746  memcpy(iv, hls->iv, sizeof(iv));
747  }
748  ff_data_to_hex(buf, iv, sizeof(iv), 0);
749  buf[32] = '\0';
750  memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
751  }
752 
753  if (!*hls->key_uri) {
754  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
755  return AVERROR(EINVAL);
756  }
757 
758  if (!*hls->key_file) {
759  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
760  return AVERROR(EINVAL);
761  }
762 
763  if (!*hls->key_string) {
765  if (!hls->key) {
766  if ((ret = randomize(key, sizeof(key))) < 0) {
767  av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
768  return ret;
769  }
770  } else {
771  memcpy(key, hls->key, sizeof(key));
772  }
773 
774  ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
775  set_http_options(s, &options, hls);
776  ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
778  if (ret < 0)
779  return ret;
780  avio_seek(pb, 0, SEEK_CUR);
781  avio_write(pb, key, KEYSIZE);
782  avio_close(pb);
783  }
784  return 0;
785 }
786 
787 
789 {
790  HLSContext *hls = s->priv_data;
791  int ret;
792  AVIOContext *pb;
795 
796  set_http_options(s, &options, hls);
797  ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
799  if (ret < 0) {
800  av_log(hls, AV_LOG_ERROR,
801  "error opening key info file %s\n", hls->key_info_file);
802  return ret;
803  }
804 
805  ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
806  vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
807 
808  ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
809  vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
810 
811  ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
812  vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
813 
814  ff_format_io_close(s, &pb);
815 
816  if (!*vs->key_uri) {
817  av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
818  return AVERROR(EINVAL);
819  }
820 
821  if (!*vs->key_file) {
822  av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
823  return AVERROR(EINVAL);
824  }
825 
826  set_http_options(s, &options, hls);
827  ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
829  if (ret < 0) {
830  av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
831  return ret;
832  }
833 
834  ret = avio_read(pb, key, sizeof(key));
835  ff_format_io_close(s, &pb);
836  if (ret != sizeof(key)) {
837  av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
838  if (ret >= 0 || ret == AVERROR_EOF)
839  ret = AVERROR(EINVAL);
840  return ret;
841  }
842  ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
843 
844  return 0;
845 }
846 
848 {
850  HLSContext *hls = s->priv_data;
851  AVFormatContext *oc;
852  AVFormatContext *vtt_oc = NULL;
853  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
854  int remaining_options;
855  int i, ret;
856 
858  if (ret < 0)
859  return ret;
860  oc = vs->avf;
861 
862  oc->url = av_strdup("");
863  if (!oc->url)
864  return AVERROR(ENOMEM);
865 
866  oc->interrupt_callback = s->interrupt_callback;
867  oc->max_delay = s->max_delay;
868  oc->opaque = s->opaque;
869  oc->io_open = s->io_open;
870  oc->io_close = s->io_close;
871  oc->strict_std_compliance = s->strict_std_compliance;
872  av_dict_copy(&oc->metadata, s->metadata, 0);
873 
874  if (vs->vtt_oformat) {
876  if (ret < 0)
877  return ret;
878  vtt_oc = vs->vtt_avf;
879  av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
880  }
881 
882  for (i = 0; i < vs->nb_streams; i++) {
883  AVStream *st;
884  AVFormatContext *loc;
886  loc = vtt_oc;
887  else
888  loc = oc;
889 
890  if (!(st = avformat_new_stream(loc, NULL)))
891  return AVERROR(ENOMEM);
893  if (!oc->oformat->codec_tag ||
897  } else {
898  st->codecpar->codec_tag = 0;
899  }
900 
902  st->time_base = vs->streams[i]->time_base;
903  av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
904  }
905 
906  vs->start_pos = 0;
907  vs->new_start = 1;
908 
909  if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
910  if (hls->http_persistent > 0) {
911  //TODO: Support fragment fmp4 for http persistent in HLS muxer.
912  av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
913  }
914  if (hls->max_seg_size > 0) {
915  av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
916  return AVERROR_PATCHWELCOME;
917  }
918  }
919 
920  if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
921  return ret;
922 
923  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
924  set_http_options(s, &options, hls);
925  if (byterange_mode) {
926  ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
927  } else {
928  ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
929  }
931  }
932  if (ret < 0) {
933  av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
934  return ret;
935  }
936 
938  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
939  av_dict_set(&options, "fflags", "-autobsf", 0);
940  av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
941  } else {
942  /* We only require one PAT/PMT per segment. */
943  char period[21];
944  snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
945  av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
946  av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
947  }
948  ret = avformat_init_output(oc, &options);
949  remaining_options = av_dict_count(options);
951  if (ret < 0)
952  return ret;
953  if (remaining_options) {
954  av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
955  return AVERROR(EINVAL);
956  }
957  avio_flush(oc->pb);
958  return 0;
959 }
960 
961 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
962 {
963  while (segment) {
964  if (!av_strcasecmp(segment->filename,filename))
965  return segment;
966  segment = segment->next;
967  }
968  return (HLSSegment *) NULL;
969 }
970 
972  VariantStream *vs, HLSSegment *en,
973  double duration, int64_t pos, int64_t size)
974 {
977  char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
978  if (!new_url) {
979  return AVERROR(ENOMEM);
980  }
981  ff_format_set_url(vs->avf, new_url);
983  char *filename = NULL;
984  if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
985  av_log(hls, AV_LOG_ERROR,
986  "Invalid second level segment filename template '%s', "
987  "you can try to remove second_level_segment_size flag\n",
988  vs->avf->url);
989  av_freep(&filename);
990  return AVERROR(EINVAL);
991  }
992  ff_format_set_url(vs->avf, filename);
993  }
995  char *filename = NULL;
996  if (replace_int_data_in_filename(&filename, vs->avf->url,
997  't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
998  av_log(hls, AV_LOG_ERROR,
999  "Invalid second level segment filename template '%s', "
1000  "you can try to remove second_level_segment_time flag\n",
1001  vs->avf->url);
1002  av_freep(&filename);
1003  return AVERROR(EINVAL);
1004  }
1005  ff_format_set_url(vs->avf, filename);
1006  }
1007  }
1008  return 0;
1009 }
1010 
1012 {
1013  int ret = 0;
1014 
1016  av_log(hls, AV_LOG_ERROR,
1017  "second_level_segment_duration hls_flag requires strftime to be true\n");
1018  ret = AVERROR(EINVAL);
1019  }
1020  if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1021  av_log(hls, AV_LOG_ERROR,
1022  "second_level_segment_size hls_flag requires strfime to be true\n");
1023  ret = AVERROR(EINVAL);
1024  }
1026  av_log(hls, AV_LOG_ERROR,
1027  "second_level_segment_index hls_flag requires strftime to be true\n");
1028  ret = AVERROR(EINVAL);
1029  }
1030 
1031  return ret;
1032 }
1033 
1035 {
1036  const char *proto = avio_find_protocol_name(vs->basename);
1037  int segment_renaming_ok = proto && !strcmp(proto, "file");
1038  int ret = 0;
1039 
1040  if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1041  av_log(hls, AV_LOG_ERROR,
1042  "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1043  ret = AVERROR(EINVAL);
1044  }
1045  if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1046  av_log(hls, AV_LOG_ERROR,
1047  "second_level_segment_size hls_flag works only with file protocol segment names\n");
1048  ret = AVERROR(EINVAL);
1049  }
1050 
1051  return ret;
1052 }
1053 
1054 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
1056  strlen(vs->current_segment_final_filename_fmt)) {
1057  ff_rename(old_filename, vs->avf->url, hls);
1058  }
1059 }
1060 
1062 {
1063  if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1064  char *filename = NULL;
1065  if (replace_int_data_in_filename(&filename,
1066 #if FF_API_HLS_WRAP
1067  oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1068 #else
1069  oc->url, 'd', vs->sequence) < 1) {
1070 #endif
1071  av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1072  "you can try to remove second_level_segment_index flag\n",
1073  oc->url);
1074  av_freep(&filename);
1075  return AVERROR(EINVAL);
1076  }
1077  ff_format_set_url(oc, filename);
1078  }
1082  if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1083  char *filename = NULL;
1084  if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1085  av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1086  "you can try to remove second_level_segment_size flag\n",
1087  oc->url);
1088  av_freep(&filename);
1089  return AVERROR(EINVAL);
1090  }
1091  ff_format_set_url(oc, filename);
1092  }
1093  if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1094  char *filename = NULL;
1095  if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1096  av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1097  "you can try to remove second_level_segment_time flag\n",
1098  oc->url);
1099  av_freep(&filename);
1100  return AVERROR(EINVAL);
1101  }
1102  ff_format_set_url(oc, filename);
1103  }
1104  }
1105  return 0;
1106 }
1107 
1108 /* Create a new segment and append it to the segment list */
1110  VariantStream *vs, double duration, int64_t pos,
1111  int64_t size)
1112 {
1113  HLSSegment *en = av_malloc(sizeof(*en));
1114  const char *filename;
1115  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1116  int ret;
1117 
1118  if (!en)
1119  return AVERROR(ENOMEM);
1120 
1121  en->var_stream_idx = vs->var_stream_idx;
1122  ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1123  if (ret < 0) {
1124  av_freep(&en);
1125  return ret;
1126  }
1127 
1128  filename = av_basename(vs->avf->url);
1129 
1130  if (hls->use_localtime_mkdir) {
1131  filename = vs->avf->url;
1132  }
1133  if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1134  && !byterange_mode) {
1135  av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1136  }
1137  av_strlcpy(en->filename, filename, sizeof(en->filename));
1138 
1139  if (vs->has_subtitle)
1140  av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1141  else
1142  en->sub_filename[0] = '\0';
1143 
1144  en->duration = duration;
1145  en->pos = pos;
1146  en->size = size;
1147  en->keyframe_pos = vs->video_keyframe_pos;
1149  en->next = NULL;
1150  en->discont = 0;
1151  en->discont_program_date_time = 0;
1152 
1153  if (vs->discontinuity) {
1154  en->discont = 1;
1155  vs->discontinuity = 0;
1156  }
1157 
1158  if (hls->key_info_file || hls->encrypt) {
1159  av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1160  av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1161  }
1162 
1163  if (!vs->segments)
1164  vs->segments = en;
1165  else
1166  vs->last_segment->next = en;
1167 
1168  vs->last_segment = en;
1169 
1170  // EVENT or VOD playlists imply sliding window cannot be used
1171  if (hls->pl_type != PLAYLIST_TYPE_NONE)
1172  hls->max_nb_segments = 0;
1173 
1174  if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1175  en = vs->segments;
1177  vs->initial_prog_date_time += en->duration;
1178  vs->segments = en->next;
1179  if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1180 #if FF_API_HLS_WRAP
1181  !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1182 #else
1183  !(hls->flags & HLS_SINGLE_FILE)) {
1184 #endif
1185  en->next = vs->old_segments;
1186  vs->old_segments = en;
1187  if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1188  return ret;
1189  } else
1190  av_freep(&en);
1191  } else
1192  vs->nb_entries++;
1193 
1194  if (hls->max_seg_size > 0) {
1195  return 0;
1196  }
1197  vs->sequence++;
1198 
1199  return 0;
1200 }
1201 
1202 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1203 {
1204  HLSContext *hls = s->priv_data;
1205  AVIOContext *in;
1206  int ret = 0, is_segment = 0;
1207  int64_t new_start_pos;
1208  char line[MAX_URL_SIZE];
1209  const char *ptr;
1210  const char *end;
1211  double discont_program_date_time = 0;
1212 
1213  if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1214  &s->interrupt_callback, NULL,
1215  s->protocol_whitelist, s->protocol_blacklist)) < 0)
1216  return ret;
1217 
1218  ff_get_chomp_line(in, line, sizeof(line));
1219  if (strcmp(line, "#EXTM3U")) {
1220  ret = AVERROR_INVALIDDATA;
1221  goto fail;
1222  }
1223 
1224  vs->discontinuity = 0;
1225  while (!avio_feof(in)) {
1226  ff_get_chomp_line(in, line, sizeof(line));
1227  if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1228  int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1229  if (tmp_sequence < vs->sequence)
1230  av_log(hls, AV_LOG_VERBOSE,
1231  "Found playlist sequence number was smaller """
1232  "than specified start sequence number: %"PRId64" < %"PRId64", "
1233  "omitting\n", tmp_sequence, hls->start_sequence);
1234  else {
1235  av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1236  vs->sequence = tmp_sequence;
1237  }
1238  } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1239  is_segment = 1;
1240  vs->discontinuity = 1;
1241  } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1242  is_segment = 1;
1243  vs->duration = atof(ptr);
1244  } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1245  ptr = av_stristr(line, "URI=\"");
1246  if (ptr) {
1247  ptr += strlen("URI=\"");
1248  end = av_stristr(ptr, ",");
1249  if (end) {
1250  av_strlcpy(vs->key_uri, ptr, end - ptr);
1251  } else {
1252  av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1253  }
1254  }
1255 
1256  ptr = av_stristr(line, "IV=0x");
1257  if (ptr) {
1258  ptr += strlen("IV=0x");
1259  end = av_stristr(ptr, ",");
1260  if (end) {
1261  av_strlcpy(vs->iv_string, ptr, end - ptr);
1262  } else {
1263  av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1264  }
1265  }
1266  } else if (av_strstart(line, "#EXT-X-PROGRAM-DATE-TIME:", &ptr)) {
1267  struct tm program_date_time;
1268  int y,M,d,h,m,s;
1269  double ms;
1270  if (sscanf(ptr, "%d-%d-%dT%d:%d:%d.%lf", &y, &M, &d, &h, &m, &s, &ms) != 7) {
1271  ret = AVERROR_INVALIDDATA;
1272  goto fail;
1273  }
1274 
1275  program_date_time.tm_year = y - 1900;
1276  program_date_time.tm_mon = M - 1;
1277  program_date_time.tm_mday = d;
1278  program_date_time.tm_hour = h;
1279  program_date_time.tm_min = m;
1280  program_date_time.tm_sec = s;
1281  program_date_time.tm_isdst = -1;
1282 
1283  discont_program_date_time = mktime(&program_date_time);
1284  discont_program_date_time += (double)(ms / 1000);
1285  } else if (av_strstart(line, "#", NULL)) {
1286  continue;
1287  } else if (line[0]) {
1288  if (is_segment) {
1289  char *new_file = av_strdup(line);
1290  if (!new_file) {
1291  ret = AVERROR(ENOMEM);
1292  goto fail;
1293  }
1294  ff_format_set_url(vs->avf, new_file);
1295  is_segment = 0;
1296  new_start_pos = avio_tell(vs->avf->pb);
1297  vs->size = new_start_pos - vs->start_pos;
1298  ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1299  vs->last_segment->discont_program_date_time = discont_program_date_time;
1300  discont_program_date_time += vs->duration;
1301  if (ret < 0)
1302  goto fail;
1303  vs->start_pos = new_start_pos;
1304  }
1305  }
1306  }
1307 
1308 fail:
1309  avio_close(in);
1310  return ret;
1311 }
1312 
1314 {
1315  HLSSegment *en;
1316 
1317  while (p) {
1318  en = p;
1319  p = p->next;
1320  av_freep(&en);
1321  }
1322 }
1323 
1325 {
1326  size_t len = strlen(oc->url);
1327  char *final_filename = av_strdup(oc->url);
1328  int ret;
1329 
1330  if (!final_filename)
1331  return AVERROR(ENOMEM);
1332  final_filename[len-4] = '\0';
1333  ret = ff_rename(oc->url, final_filename, s);
1334  oc->url[len-4] = '\0';
1335  av_freep(&final_filename);
1336  return ret;
1337 }
1338 
1339 static const char* get_relative_url(const char *master_url, const char *media_url)
1340 {
1341  const char *p = strrchr(master_url, '/');
1342  size_t base_len = 0;
1343 
1344  if (!p) p = strrchr(master_url, '\\');
1345 
1346  if (p) {
1347  base_len = p - master_url;
1348  if (av_strncasecmp(master_url, media_url, base_len)) {
1349  av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1350  return NULL;
1351  }
1352  } else {
1353  return media_url;
1354  }
1355 
1356  return media_url + base_len + 1;
1357 }
1358 
1359 static int64_t get_stream_bit_rate(AVStream *stream)
1360 {
1362  stream,
1364  NULL
1365  );
1366 
1367  if (stream->codecpar->bit_rate)
1368  return stream->codecpar->bit_rate;
1369  else if (props)
1370  return props->max_bitrate;
1371 
1372  return 0;
1373 }
1374 
1376  VariantStream * const input_vs)
1377 {
1378  HLSContext *hls = s->priv_data;
1379  VariantStream *vs, *temp_vs;
1380  AVStream *vid_st, *aud_st;
1382  unsigned int i, j;
1383  int ret, bandwidth;
1384  const char *m3u8_rel_name = NULL;
1385  const char *vtt_m3u8_rel_name = NULL;
1386  const char *ccgroup;
1387  const char *sgroup = NULL;
1388  ClosedCaptionsStream *ccs;
1389  const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1390  int is_file_proto = proto && !strcmp(proto, "file");
1391  int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1392  char temp_filename[MAX_URL_SIZE];
1393 
1394  input_vs->m3u8_created = 1;
1395  if (!hls->master_m3u8_created) {
1396  /* For the first time, wait until all the media playlists are created */
1397  for (i = 0; i < hls->nb_varstreams; i++)
1398  if (!hls->var_streams[i].m3u8_created)
1399  return 0;
1400  } else {
1401  /* Keep publishing the master playlist at the configured rate */
1402  if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1403  input_vs->number % hls->master_publish_rate)
1404  return 0;
1405  }
1406 
1407  set_http_options(s, &options, hls);
1408  snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1409  ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1411  if (ret < 0) {
1412  av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1413  temp_filename);
1414  goto fail;
1415  }
1416 
1418 
1419  for (i = 0; i < hls->nb_ccstreams; i++) {
1420  ccs = &(hls->cc_streams[i]);
1421  avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1422  avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1423  avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1424  if (ccs->language)
1425  avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1426  avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1427  }
1428 
1429  /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1430  for (i = 0; i < hls->nb_varstreams; i++) {
1431  vs = &(hls->var_streams[i]);
1432 
1433  if (vs->has_video || vs->has_subtitle || !vs->agroup)
1434  continue;
1435 
1436  m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1437  if (!m3u8_rel_name) {
1438  av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1439  goto fail;
1440  }
1441 
1442  ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1443  }
1444 
1445  /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1446  for (i = 0; i < hls->nb_varstreams; i++) {
1447  vs = &(hls->var_streams[i]);
1448 
1449  m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1450  if (!m3u8_rel_name) {
1451  av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1452  goto fail;
1453  }
1454 
1455  vid_st = NULL;
1456  aud_st = NULL;
1457  for (j = 0; j < vs->nb_streams; j++) {
1459  vid_st = vs->streams[j];
1460  else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1461  aud_st = vs->streams[j];
1462  }
1463 
1464  if (!vid_st && !aud_st) {
1465  av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1466  continue;
1467  }
1468 
1469  /**
1470  * Traverse through the list of audio only rendition streams and find
1471  * the rendition which has highest bitrate in the same audio group
1472  */
1473  if (vs->agroup) {
1474  for (j = 0; j < hls->nb_varstreams; j++) {
1475  temp_vs = &(hls->var_streams[j]);
1476  if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1477  temp_vs->agroup &&
1478  !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1479  if (!aud_st)
1480  aud_st = temp_vs->streams[0];
1481  if (temp_vs->streams[0]->codecpar->bit_rate >
1482  aud_st->codecpar->bit_rate)
1483  aud_st = temp_vs->streams[0];
1484  }
1485  }
1486  }
1487 
1488  bandwidth = 0;
1489  if (vid_st)
1490  bandwidth += get_stream_bit_rate(vid_st);
1491  if (aud_st)
1492  bandwidth += get_stream_bit_rate(aud_st);
1493  bandwidth += bandwidth / 10;
1494 
1495  ccgroup = NULL;
1496  if (vid_st && vs->ccgroup) {
1497  /* check if this group name is available in the cc map string */
1498  for (j = 0; j < hls->nb_ccstreams; j++) {
1499  ccs = &(hls->cc_streams[j]);
1500  if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1501  ccgroup = vs->ccgroup;
1502  break;
1503  }
1504  }
1505  if (j == hls->nb_ccstreams)
1506  av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1507  vs->ccgroup);
1508  }
1509 
1510  if (vid_st && vs->sgroup) {
1511  sgroup = vs->sgroup;
1512  vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1513  if (!vtt_m3u8_rel_name) {
1514  av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1515  break;
1516  }
1517 
1518  ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1519  }
1520 
1521  if (!hls->has_default_key || !hls->has_video_m3u8) {
1522  ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1523  aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1524  } else {
1525  if (vid_st) {
1526  ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1527  aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1528  }
1529  }
1530  }
1531 fail:
1532  if (ret >=0)
1533  hls->master_m3u8_created = 1;
1534  hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1535  if (use_temp_file)
1536  ff_rename(temp_filename, hls->master_m3u8_url, s);
1537 
1538  return ret;
1539 }
1540 
1541 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1542 {
1543  HLSContext *hls = s->priv_data;
1544  HLSSegment *en;
1545  int target_duration = 0;
1546  int ret = 0;
1547  char temp_filename[MAX_URL_SIZE];
1548  char temp_vtt_filename[MAX_URL_SIZE];
1549  int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1550  const char *proto = avio_find_protocol_name(vs->m3u8_name);
1551  int is_file_proto = proto && !strcmp(proto, "file");
1552  int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1553  static unsigned warned_non_file;
1554  char *key_uri = NULL;
1555  char *iv_string = NULL;
1557  double prog_date_time = vs->initial_prog_date_time;
1558  double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1559  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1560 
1561  hls->version = 3;
1562  if (byterange_mode) {
1563  hls->version = 4;
1564  sequence = 0;
1565  }
1566 
1567  if (hls->flags & HLS_I_FRAMES_ONLY) {
1568  hls->version = 4;
1569  }
1570 
1571  if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1572  hls->version = 6;
1573  }
1574 
1575  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1576  hls->version = 7;
1577  }
1578 
1579  if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1580  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1581 
1582  set_http_options(s, &options, hls);
1583  snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1584  if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1585  if (hls->ignore_io_errors)
1586  ret = 0;
1587  goto fail;
1588  }
1589 
1590  for (en = vs->segments; en; en = en->next) {
1591  if (target_duration <= en->duration)
1592  target_duration = lrint(en->duration);
1593  }
1594 
1595  vs->discontinuity_set = 0;
1596  ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1597  target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1598 
1599  if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1600  avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1601  vs->discontinuity_set = 1;
1602  }
1603  if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1604  avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1605  }
1606  for (en = vs->segments; en; en = en->next) {
1607  if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1608  av_strcasecmp(en->iv_string, iv_string))) {
1609  avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1610  if (*en->iv_string)
1611  avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1612  avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1613  key_uri = en->key_uri;
1614  iv_string = en->iv_string;
1615  }
1616 
1617  if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1618  ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1619  hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1620  }
1621 
1622  ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1623  en->duration, hls->flags & HLS_ROUND_DURATIONS,
1624  en->size, en->pos, hls->baseurl,
1625  en->filename,
1626  en->discont_program_date_time ? &en->discont_program_date_time : prog_date_time_p,
1628  if (en->discont_program_date_time)
1630  if (ret < 0) {
1631  av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1632  }
1633  }
1634 
1635  if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1636  ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1637 
1638  if (vs->vtt_m3u8_name) {
1639  snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1640  if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1641  if (hls->ignore_io_errors)
1642  ret = 0;
1643  goto fail;
1644  }
1646  target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1647  for (en = vs->segments; en; en = en->next) {
1648  ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1649  en->duration, 0, en->size, en->pos,
1650  hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1651  if (ret < 0) {
1652  av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1653  }
1654  }
1655 
1656  if (last)
1658 
1659  }
1660 
1661 fail:
1663  ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1664  if (ret < 0) {
1665  return ret;
1666  }
1668  if (use_temp_file) {
1669  ff_rename(temp_filename, vs->m3u8_name, s);
1670  if (vs->vtt_m3u8_name)
1671  ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1672  }
1673  if (ret >= 0 && hls->master_pl_name)
1674  if (create_master_playlist(s, vs) < 0)
1675  av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1676 
1677  return ret;
1678 }
1679 
1681 {
1682  HLSContext *c = s->priv_data;
1683  AVFormatContext *oc = vs->avf;
1684  AVFormatContext *vtt_oc = vs->vtt_avf;
1686  const char *proto = NULL;
1687  int use_temp_file = 0;
1688  char iv_string[KEYSIZE*2 + 1];
1689  int err = 0;
1690 
1691  if (c->flags & HLS_SINGLE_FILE) {
1692  char *new_name = av_strdup(vs->basename);
1693  if (!new_name)
1694  return AVERROR(ENOMEM);
1695  ff_format_set_url(oc, new_name);
1696  if (vs->vtt_basename) {
1697  new_name = av_strdup(vs->vtt_basename);
1698  if (!new_name)
1699  return AVERROR(ENOMEM);
1700  ff_format_set_url(vtt_oc, new_name);
1701  }
1702  } else if (c->max_seg_size > 0) {
1703  char *filename = NULL;
1704  if (replace_int_data_in_filename(&filename,
1705 #if FF_API_HLS_WRAP
1706  vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1707 #else
1708  vs->basename, 'd', vs->sequence) < 1) {
1709 #endif
1710  av_freep(&filename);
1711  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1712  return AVERROR(EINVAL);
1713  }
1714  ff_format_set_url(oc, filename);
1715  } else {
1716  if (c->use_localtime) {
1717  int r;
1718  char *expanded = NULL;
1719 
1720  r = strftime_expand(vs->basename, &expanded);
1721  if (r < 0) {
1722  av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1723  return r;
1724  }
1725  ff_format_set_url(oc, expanded);
1726 
1727  err = sls_flag_use_localtime_filename(oc, c, vs);
1728  if (err < 0) {
1729  return AVERROR(ENOMEM);
1730  }
1731 
1732  if (c->use_localtime_mkdir) {
1733  const char *dir;
1734  char *fn_copy = av_strdup(oc->url);
1735  if (!fn_copy)
1736  return AVERROR(ENOMEM);
1737  dir = av_dirname(fn_copy);
1738  if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1739  av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1740  av_freep(&fn_copy);
1741  return AVERROR(errno);
1742  }
1743  av_freep(&fn_copy);
1744  }
1745  } else {
1746  char *filename = NULL;
1747  if (replace_int_data_in_filename(&filename,
1748 #if FF_API_HLS_WRAP
1749  vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1750 #else
1751  vs->basename, 'd', vs->sequence) < 1) {
1752 #endif
1753  av_freep(&filename);
1754  av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1755  return AVERROR(EINVAL);
1756  }
1757  ff_format_set_url(oc, filename);
1758  }
1759  if (vs->vtt_basename) {
1760  char *filename = NULL;
1761  if (replace_int_data_in_filename(&filename,
1762 #if FF_API_HLS_WRAP
1763  vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1764 #else
1765  vs->vtt_basename, 'd', vs->sequence) < 1) {
1766 #endif
1767  av_freep(&filename);
1768  av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1769  return AVERROR(EINVAL);
1770  }
1771  ff_format_set_url(vtt_oc, filename);
1772  }
1773  }
1774 
1775  proto = avio_find_protocol_name(oc->url);
1776  use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1777 
1778  if (use_temp_file) {
1779  char *new_name = av_asprintf("%s.tmp", oc->url);
1780  if (!new_name)
1781  return AVERROR(ENOMEM);
1782  ff_format_set_url(oc, new_name);
1783  }
1784 
1785  if (c->key_info_file || c->encrypt) {
1786  if (c->segment_type == SEGMENT_TYPE_FMP4) {
1787  av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1788  return AVERROR_PATCHWELCOME;
1789  }
1790 
1791  if (c->key_info_file && c->encrypt) {
1792  av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1793  " ignoring -hls_enc\n");
1794  }
1795 
1796  if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1797  if (c->key_info_file) {
1798  if ((err = hls_encryption_start(s, vs)) < 0)
1799  goto fail;
1800  } else {
1801  if (!c->encrypt_started) {
1802  if ((err = do_encrypt(s, vs)) < 0)
1803  goto fail;
1804  c->encrypt_started = 1;
1805  }
1806  av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1807  av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1808  av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1809  }
1810  vs->encrypt_started = 1;
1811  }
1812  err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1813  if (!err) {
1814  snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1815  memset(vs->iv_string, 0, sizeof(vs->iv_string));
1816  memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1817  }
1818  }
1819  if (c->segment_type != SEGMENT_TYPE_FMP4) {
1820  if (oc->oformat->priv_class && oc->priv_data) {
1821  av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1822  }
1823  if (c->flags & HLS_SINGLE_FILE) {
1824  if (c->key_info_file || c->encrypt) {
1825  av_dict_set(&options, "encryption_key", vs->key_string, 0);
1826  av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
1827 
1828  /* Write temp file with cryption content */
1829  av_freep(&vs->basename_tmp);
1830  vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
1831 
1832  /* append temp file content into single file */
1833  av_freep(&vs->basename);
1834  vs->basename = av_asprintf("%s", oc->url);
1835  } else {
1836  vs->basename_tmp = vs->basename;
1837  }
1839  if (!vs->out_single_file)
1840  if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
1841  if (c->ignore_io_errors)
1842  err = 0;
1843  goto fail;
1844  }
1845 
1846  if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
1847  if (c->ignore_io_errors)
1848  err = 0;
1849  goto fail;
1850  }
1851 
1852  }
1853  }
1854  if (vs->vtt_basename) {
1856  if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1857  if (c->ignore_io_errors)
1858  err = 0;
1859  goto fail;
1860  }
1861  }
1863 
1864  if (vs->vtt_basename) {
1865  err = avformat_write_header(vtt_oc,NULL);
1866  if (err < 0)
1867  return err;
1868  }
1869 
1870  return 0;
1871 fail:
1873 
1874  return err;
1875 }
1876 
1878 {
1879  char b[21];
1880  time_t t = time(NULL);
1881  struct tm *p, tmbuf;
1882  HLSContext *hls = s->priv_data;
1883 
1884  p = localtime_r(&t, &tmbuf);
1885  // no %s support when strftime returned error or left format string unchanged
1886  // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1887  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1888  return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1889  }
1890  return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1891 }
1892 
1893 static int append_postfix(char *name, int name_buf_len, int i)
1894 {
1895  char *p;
1896  char extension[10] = {'\0'};
1897 
1898  p = strrchr(name, '.');
1899  if (p) {
1900  av_strlcpy(extension, p, sizeof(extension));
1901  *p = '\0';
1902  }
1903 
1904  snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1905 
1906  if (strlen(extension))
1907  av_strlcat(name, extension, name_buf_len);
1908 
1909  return 0;
1910 }
1911 
1912 static int validate_name(int nb_vs, const char *fn)
1913 {
1914  const char *filename, *subdir_name;
1915  char *fn_dup = NULL;
1916  int ret = 0;
1917 
1918  if (!fn)
1919  return AVERROR(EINVAL);
1920 
1921  fn_dup = av_strdup(fn);
1922  if (!fn_dup)
1923  return AVERROR(ENOMEM);
1924  filename = av_basename(fn);
1925  subdir_name = av_dirname(fn_dup);
1926 
1927  if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1928  av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1929  "either in the filename or in the sub-directory name of file %s\n", fn);
1930  ret = AVERROR(EINVAL);
1931  goto fail;
1932  }
1933 
1934  if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1935  av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1936  "in the sub-directory name of file %s, but only in one of them\n", fn);
1937  ret = AVERROR(EINVAL);
1938  goto fail;
1939  }
1940 
1941 fail:
1942  av_freep(&fn_dup);
1943  return ret;
1944 }
1945 
1946 static int format_name(const char *buf, char **s, int index, const char *varname)
1947 {
1948  const char *proto, *dir;
1949  char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1950  int ret = 0;
1951 
1952  orig_buf_dup = av_strdup(buf);
1953  if (!orig_buf_dup)
1954  return AVERROR(ENOMEM);
1955 
1956  if (!av_stristr(buf, "%v")) {
1957  *s = orig_buf_dup;
1958  return 0;
1959  }
1960 
1961  if (!varname) {
1962  if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1963  ret = AVERROR(EINVAL);
1964  goto fail;
1965  }
1966  } else {
1967  if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1968  ret = AVERROR(EINVAL);
1969  goto fail;
1970  }
1971  }
1972 
1973  proto = avio_find_protocol_name(orig_buf_dup);
1974  dir = av_dirname(orig_buf_dup);
1975 
1976  /* if %v is present in the file's directory, create sub-directory */
1977  if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1978  mod_buf_dup = av_strdup(*s);
1979  dir = av_dirname(mod_buf_dup);
1980  if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1981  ret = AVERROR(errno);
1982  goto fail;
1983  }
1984  }
1985 
1986 fail:
1987  av_freep(&orig_buf_dup);
1988  av_freep(&mod_buf_dup);
1989  return ret;
1990 }
1991 
1993  enum AVMediaType codec_type,
1994  int64_t stream_id)
1995 {
1996  unsigned int stream_index, cnt;
1997  if (stream_id < 0 || stream_id > s->nb_streams - 1)
1998  return -1;
1999  cnt = 0;
2000  for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
2001  if (s->streams[stream_index]->codecpar->codec_type != codec_type)
2002  continue;
2003  if (cnt == stream_id)
2004  return stream_index;
2005  cnt++;
2006  }
2007  return -1;
2008 }
2009 
2011 {
2012  HLSContext *hls = s->priv_data;
2013  VariantStream *vs;
2014  int stream_index, i, j;
2015  enum AVMediaType codec_type;
2016  int nb_varstreams = 0, nb_streams;
2017  char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
2018  const char *val;
2019 
2020  /**
2021  * Expected format for var_stream_map string is as below:
2022  * "a:0,v:0 a:1,v:1"
2023  * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
2024  * This string specifies how to group the audio, video and subtitle streams
2025  * into different variant streams. The variant stream groups are separated
2026  * by space.
2027  *
2028  * a:, v:, s: are keys to specify audio, video and subtitle streams
2029  * respectively. Allowed values are 0 to 9 digits (limited just based on
2030  * practical usage)
2031  *
2032  * agroup: is key to specify audio group. A string can be given as value.
2033  * sgroup: is key to specify subtitle group. A string can be given as value.
2034  */
2035  p = av_strdup(hls->var_stream_map);
2036  if (!p)
2037  return AVERROR(ENOMEM);
2038 
2039  q = p;
2040  while (av_strtok(q, " \t", &saveptr1)) {
2041  q = NULL;
2042  nb_varstreams++;
2043  }
2044  av_freep(&p);
2045 
2046  hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
2047  if (!hls->var_streams)
2048  return AVERROR(ENOMEM);
2049  hls->nb_varstreams = nb_varstreams;
2050 
2051  p = hls->var_stream_map;
2052  nb_varstreams = 0;
2053  while (varstr = av_strtok(p, " \t", &saveptr1)) {
2054  p = NULL;
2055 
2056  if (nb_varstreams < hls->nb_varstreams) {
2057  vs = &(hls->var_streams[nb_varstreams]);
2058  vs->var_stream_idx = nb_varstreams;
2059  vs->is_default = 0;
2060  nb_varstreams++;
2061  } else
2062  return AVERROR(EINVAL);
2063 
2064  q = varstr;
2065  while (1) {
2066  if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
2067  !av_strncasecmp(q, "s:", 2))
2068  vs->nb_streams++;
2069  q = strchr(q, ',');
2070  if (!q)
2071  break;
2072  q++;
2073  }
2074  vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
2075  if (!vs->streams)
2076  return AVERROR(ENOMEM);
2077 
2078  nb_streams = 0;
2079  while (keyval = av_strtok(varstr, ",", &saveptr2)) {
2080  int64_t num;
2081  char *end;
2082  varstr = NULL;
2083  if (av_strstart(keyval, "language:", &val)) {
2084  vs->language = val;
2085  continue;
2086  } else if (av_strstart(keyval, "default:", &val)) {
2087  vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
2088  (!av_strncasecmp(val, "1", strlen("1"))));
2089  hls->has_default_key = 1;
2090  continue;
2091  } else if (av_strstart(keyval, "name:", &val)) {
2092  vs->varname = val;
2093  continue;
2094  } else if (av_strstart(keyval, "agroup:", &val)) {
2095  vs->agroup = val;
2096  continue;
2097  } else if (av_strstart(keyval, "sgroup:", &val)) {
2098  vs->sgroup = val;
2099  continue;
2100  } else if (av_strstart(keyval, "ccgroup:", &val)) {
2101  vs->ccgroup = val;
2102  continue;
2103  } else if (av_strstart(keyval, "v:", &val)) {
2105  hls->has_video_m3u8 = 1;
2106  } else if (av_strstart(keyval, "a:", &val)) {
2108  } else if (av_strstart(keyval, "s:", &val)) {
2110  } else {
2111  av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2112  return AVERROR(EINVAL);
2113  }
2114 
2115  num = strtoll(val, &end, 10);
2116  if (!av_isdigit(*val) || *end != '\0') {
2117  av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2118  return AVERROR(EINVAL);
2119  }
2120  stream_index = get_nth_codec_stream_index(s, codec_type, num);
2121 
2122  if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2123  for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2124  if (vs->streams[i] == s->streams[stream_index]) {
2125  av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2126  "variant definition #%d\n", nb_varstreams - 1);
2127  return AVERROR(EINVAL);
2128  }
2129  }
2130  for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2131  for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2132  if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2133  av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2134  "in two different variant definitions #%d and #%d\n",
2135  j, nb_varstreams - 1);
2136  return AVERROR(EINVAL);
2137  }
2138  }
2139  }
2140  vs->streams[nb_streams++] = s->streams[stream_index];
2141  } else {
2142  av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2143  return AVERROR(EINVAL);
2144  }
2145  }
2146  }
2147  av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2148  hls->nb_varstreams);
2149 
2150  return 0;
2151 }
2152 
2154 {
2155  HLSContext *hls = s->priv_data;
2156  int nb_ccstreams = 0;
2157  char *p, *q, *ccstr, *keyval;
2158  char *saveptr1 = NULL, *saveptr2 = NULL;
2159  const char *val;
2160  ClosedCaptionsStream *ccs;
2161 
2162  p = av_strdup(hls->cc_stream_map);
2163  if(!p)
2164  return AVERROR(ENOMEM);
2165 
2166  q = p;
2167  while (av_strtok(q, " \t", &saveptr1)) {
2168  q = NULL;
2169  nb_ccstreams++;
2170  }
2171  av_freep(&p);
2172 
2173  hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2174  if (!hls->cc_streams)
2175  return AVERROR(ENOMEM);
2176  hls->nb_ccstreams = nb_ccstreams;
2177 
2178  p = hls->cc_stream_map;
2179  nb_ccstreams = 0;
2180  while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2181  p = NULL;
2182 
2183  if (nb_ccstreams < hls->nb_ccstreams)
2184  ccs = &(hls->cc_streams[nb_ccstreams++]);
2185  else
2186  return AVERROR(EINVAL);
2187 
2188  while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2189  ccstr = NULL;
2190 
2191  if (av_strstart(keyval, "ccgroup:", &val)) {
2192  ccs->ccgroup = val;
2193  } else if (av_strstart(keyval, "instreamid:", &val)) {
2194  ccs->instreamid = val;
2195  } else if (av_strstart(keyval, "language:", &val)) {
2196  ccs->language = val;
2197  } else {
2198  av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2199  return AVERROR(EINVAL);
2200  }
2201  }
2202 
2203  if (!ccs->ccgroup || !ccs->instreamid) {
2204  av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2205  return AVERROR(EINVAL);
2206  }
2207 
2208  if (av_strstart(ccs->instreamid, "CC", &val)) {
2209  if (atoi(val) < 1 || atoi(val) > 4) {
2210  av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2211  atoi(val), ccs->instreamid);
2212  return AVERROR(EINVAL);
2213  }
2214  } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2215  if (atoi(val) < 1 || atoi(val) > 63) {
2216  av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2217  atoi(val), ccs->instreamid);
2218  return AVERROR(EINVAL);
2219  }
2220  } else {
2221  av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2222  ccs->instreamid);
2223  return AVERROR(EINVAL);
2224  }
2225  }
2226 
2227  return 0;
2228 }
2229 
2231 {
2232  HLSContext *hls = s->priv_data;
2233  unsigned int i;
2234  int ret = 0;
2235 
2236  if (hls->cc_stream_map) {
2238  if (ret < 0)
2239  return ret;
2240  }
2241 
2242  if (hls->var_stream_map) {
2244  } else {
2245  //By default, a single variant stream with all the codec streams is created
2246  hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2247  if (!hls->var_streams)
2248  return AVERROR(ENOMEM);
2249  hls->nb_varstreams = 1;
2250 
2251  hls->var_streams[0].var_stream_idx = 0;
2252  hls->var_streams[0].nb_streams = s->nb_streams;
2253  hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2254  hls->var_streams[0].nb_streams);
2255  if (!hls->var_streams[0].streams)
2256  return AVERROR(ENOMEM);
2257 
2258  //by default, the first available ccgroup is mapped to the variant stream
2259  if (hls->nb_ccstreams)
2260  hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2261 
2262  for (i = 0; i < s->nb_streams; i++)
2263  hls->var_streams[0].streams[i] = s->streams[i];
2264  }
2265  return 0;
2266 }
2267 
2269 {
2270  HLSContext *hls = s->priv_data;
2271  const char *dir;
2272  char *fn1= NULL, *fn2 = NULL;
2273  int ret = 0;
2274 
2275  fn1 = av_strdup(s->url);
2276  if (!fn1)
2277  return AVERROR(ENOMEM);
2278  dir = av_dirname(fn1);
2279 
2280  /**
2281  * if output file's directory has %v, variants are created in sub-directories
2282  * then master is created at the sub-directories level
2283  */
2284  if (dir && av_stristr(av_basename(dir), "%v")) {
2285  fn2 = av_strdup(dir);
2286  if (!fn2) {
2287  ret = AVERROR(ENOMEM);
2288  goto fail;
2289  }
2290  dir = av_dirname(fn2);
2291  }
2292 
2293  if (dir && strcmp(dir, "."))
2295  else
2297 
2298  if (!hls->master_m3u8_url) {
2299  ret = AVERROR(ENOMEM);
2300  goto fail;
2301  }
2302 
2303 fail:
2304  av_freep(&fn1);
2305  av_freep(&fn2);
2306 
2307  return ret;
2308 }
2309 
2311 {
2312  HLSContext *hls = s->priv_data;
2313  int ret, i, j;
2314  VariantStream *vs = NULL;
2315 
2316  for (i = 0; i < hls->nb_varstreams; i++) {
2317  vs = &hls->var_streams[i];
2318 
2319  ret = avformat_write_header(vs->avf, NULL);
2320  if (ret < 0)
2321  return ret;
2322  //av_assert0(s->nb_streams == hls->avf->nb_streams);
2323  for (j = 0; j < vs->nb_streams; j++) {
2324  AVStream *inner_st;
2325  AVStream *outer_st = vs->streams[j];
2326 
2327  if (hls->max_seg_size > 0) {
2328  if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2329  (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2330  av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2331  "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2332  outer_st->codecpar->bit_rate, hls->max_seg_size);
2333  }
2334  }
2335 
2336  if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2337  inner_st = vs->avf->streams[j];
2338  else if (vs->vtt_avf)
2339  inner_st = vs->vtt_avf->streams[0];
2340  else {
2341  /* We have a subtitle stream, when the user does not want one */
2342  inner_st = NULL;
2343  continue;
2344  }
2345  avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2346  if (outer_st->codecpar->codec_id == AV_CODEC_ID_HEVC &&
2347  outer_st->codecpar->codec_tag != MKTAG('h','v','c','1')) {
2348  av_log(s, AV_LOG_WARNING, "Stream HEVC is not hvc1, you should use tag:v hvc1 to set it.\n");
2349  }
2350  write_codec_attr(outer_st, vs);
2351 
2352  }
2353  /* Update the Codec Attr string for the mapped audio groups */
2354  if (vs->has_video && vs->agroup) {
2355  for (j = 0; j < hls->nb_varstreams; j++) {
2356  VariantStream *vs_agroup = &(hls->var_streams[j]);
2357  if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2358  vs_agroup->agroup &&
2359  !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2360  write_codec_attr(vs_agroup->streams[0], vs);
2361  }
2362  }
2363  }
2364  }
2365 
2366  return ret;
2367 }
2368 
2370 {
2371  HLSContext *hls = s->priv_data;
2373  int ret = 0;
2374 
2375  set_http_options(s, &options, hls);
2376  ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2378  if (ret < 0)
2379  return ret;
2381  hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2382 
2383  return ret;
2384 }
2385 
2387 {
2388  int ret = 0;
2389  int64_t read_byte = 0;
2390  int64_t total_size = 0;
2391  char *filename = NULL;
2392  char buf[BUFSIZE];
2393  AVFormatContext *oc = vs->avf;
2394 
2395  hlsenc_io_close(s, &vs->out, vs->basename_tmp);
2396  filename = av_asprintf("%s.tmp", oc->url);
2397  ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
2398  if (ret < 0) {
2399  av_free(filename);
2400  return ret;
2401  }
2402 
2403  do {
2404  memset(buf, 0, sizeof(BUFSIZE));
2405  read_byte = avio_read(vs->out, buf, BUFSIZE);
2406  avio_write(vs->out_single_file, buf, read_byte);
2407  if (read_byte > 0) {
2408  total_size += read_byte;
2409  ret = total_size;
2410  }
2411  } while (read_byte > 0);
2412 
2413  hlsenc_io_close(s, &vs->out, filename);
2414  av_free(filename);
2415 
2416  return ret;
2417 }
2419 {
2420  HLSContext *hls = s->priv_data;
2421  AVFormatContext *oc = NULL;
2422  AVStream *st = s->streams[pkt->stream_index];
2423  int64_t end_pts = 0;
2424  int is_ref_pkt = 1;
2425  int ret = 0, can_split = 1, i, j;
2426  int stream_index = 0;
2427  int range_length = 0;
2428  const char *proto = NULL;
2429  int use_temp_file = 0;
2430  VariantStream *vs = NULL;
2431  char *old_filename = NULL;
2432 
2433  for (i = 0; i < hls->nb_varstreams; i++) {
2434  vs = &hls->var_streams[i];
2435  for (j = 0; j < vs->nb_streams; j++) {
2436  if (vs->streams[j] == st) {
2438  oc = vs->vtt_avf;
2439  stream_index = 0;
2440  } else {
2441  oc = vs->avf;
2442  stream_index = j;
2443  }
2444  break;
2445  }
2446  }
2447 
2448  if (oc)
2449  break;
2450  }
2451 
2452  if (!oc) {
2453  av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2454  return AVERROR(ENOMEM);
2455  }
2456 
2457  end_pts = hls->recording_time * vs->number;
2458 
2459  if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2460  /* reset end_pts, hls->recording_time at end of the init hls list */
2461  int64_t init_list_dur = hls->init_time * vs->nb_entries;
2462  int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * hls->time;
2463  hls->recording_time = hls->time;
2464  end_pts = init_list_dur + after_init_list_dur ;
2465  }
2466 
2467  if (vs->start_pts == AV_NOPTS_VALUE) {
2468  vs->start_pts = pkt->pts;
2470  vs->start_pts_from_audio = 1;
2471  }
2473  vs->start_pts = pkt->pts;
2474  vs->start_pts_from_audio = 0;
2475  }
2476 
2477  if (vs->has_video) {
2478  can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2479  ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2480  is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2481  }
2482  if (pkt->pts == AV_NOPTS_VALUE)
2483  is_ref_pkt = can_split = 0;
2484 
2485  if (is_ref_pkt) {
2486  if (vs->end_pts == AV_NOPTS_VALUE)
2487  vs->end_pts = pkt->pts;
2488  if (vs->new_start) {
2489  vs->new_start = 0;
2490  vs->duration = (double)(pkt->pts - vs->end_pts)
2491  * st->time_base.num / st->time_base.den;
2492  vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2493  } else {
2494  if (pkt->duration) {
2495  vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2496  } else {
2497  av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2498  vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2499  }
2500  }
2501  }
2502 
2503  can_split = can_split && (pkt->pts - vs->end_pts > 0);
2504  if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2505  end_pts, AV_TIME_BASE_Q) >= 0) {
2506  int64_t new_start_pos;
2507  int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2508 
2509  av_write_frame(oc, NULL); /* Flush any buffered data */
2510  new_start_pos = avio_tell(oc->pb);
2511  vs->size = new_start_pos - vs->start_pos;
2512  avio_flush(oc->pb);
2513  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2514  if (!vs->init_range_length) {
2515  range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2516  if (range_length <= 0)
2517  return AVERROR(EINVAL);
2518  avio_write(vs->out, vs->init_buffer, range_length);
2519  if (!hls->resend_init_file)
2520  av_freep(&vs->init_buffer);
2521  vs->init_range_length = range_length;
2522  avio_open_dyn_buf(&oc->pb);
2523  vs->packets_written = 0;
2524  vs->start_pos = range_length;
2525  if (!byterange_mode) {
2527  }
2528  }
2529  }
2530  if (!byterange_mode) {
2531  if (vs->vtt_avf) {
2532  hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2533  }
2534  }
2535 
2536  if (hls->flags & HLS_SINGLE_FILE) {
2537  ret = flush_dynbuf(vs, &range_length);
2538  av_freep(&vs->temp_buffer);
2539  if (ret < 0) {
2540  return ret;
2541  }
2542  vs->size = range_length;
2543  if (hls->key_info_file || hls->encrypt)
2544  vs->size = append_single_file(s, vs);
2545  } else {
2546  if (oc->url[0]) {
2547  proto = avio_find_protocol_name(oc->url);
2548  use_temp_file = proto && !strcmp(proto, "file")
2549  && (hls->flags & HLS_TEMP_FILE);
2550  }
2551 
2552  if ((hls->max_seg_size > 0 && (vs->size + vs->start_pos >= hls->max_seg_size)) || !byterange_mode) {
2554  char *filename = NULL;
2555  if (hls->key_info_file || hls->encrypt) {
2556  av_dict_set(&options, "encryption_key", vs->key_string, 0);
2557  av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2558  filename = av_asprintf("crypto:%s", oc->url);
2559  } else {
2560  filename = av_asprintf("%s", oc->url);
2561  }
2562  if (!filename) {
2564  return AVERROR(ENOMEM);
2565  }
2566 
2567  // look to rename the asset name
2568  if (use_temp_file)
2569  av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2570 
2571  set_http_options(s, &options, hls);
2572 
2573  ret = hlsenc_io_open(s, &vs->out, filename, &options);
2574  if (ret < 0) {
2576  "Failed to open file '%s'\n", filename);
2577  av_freep(&filename);
2579  return hls->ignore_io_errors ? 0 : ret;
2580  }
2581  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2582  write_styp(vs->out);
2583  }
2584  ret = flush_dynbuf(vs, &range_length);
2585  if (ret < 0) {
2586  av_freep(&filename);
2588  return ret;
2589  }
2590  ret = hlsenc_io_close(s, &vs->out, filename);
2591  if (ret < 0) {
2592  av_log(s, AV_LOG_WARNING, "upload segment failed,"
2593  " will retry with a new http session.\n");
2594  ff_format_io_close(s, &vs->out);
2595  ret = hlsenc_io_open(s, &vs->out, filename, &options);
2596  reflush_dynbuf(vs, &range_length);
2597  ret = hlsenc_io_close(s, &vs->out, filename);
2598  }
2600  av_freep(&vs->temp_buffer);
2601  av_freep(&filename);
2602  }
2603 
2604  if (use_temp_file)
2605  hls_rename_temp_file(s, oc);
2606  }
2607 
2608  old_filename = av_strdup(oc->url);
2609  if (!old_filename) {
2610  return AVERROR(ENOMEM);
2611  }
2612 
2613  if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2614  double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2615  ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2616  vs->end_pts = pkt->pts;
2617  vs->duration = 0;
2618  if (ret < 0) {
2619  av_freep(&old_filename);
2620  return ret;
2621  }
2622  }
2623 
2624  // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2625  if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2626  if ((ret = hls_window(s, 0, vs)) < 0) {
2627  av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2628  ff_format_io_close(s, &vs->out);
2629  if ((ret = hls_window(s, 0, vs)) < 0) {
2630  av_freep(&old_filename);
2631  return ret;
2632  }
2633  }
2634  }
2635 
2636  if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2637  ret = hls_init_file_resend(s, vs);
2638  if (ret < 0) {
2639  av_freep(&old_filename);
2640  return ret;
2641  }
2642  }
2643 
2644  if (hls->flags & HLS_SINGLE_FILE) {
2645  vs->start_pos += vs->size;
2646  if (hls->key_info_file || hls->encrypt)
2647  ret = hls_start(s, vs);
2648  } else if (hls->max_seg_size > 0) {
2649  if (vs->size + vs->start_pos >= hls->max_seg_size) {
2650  vs->sequence++;
2651  sls_flag_file_rename(hls, vs, old_filename);
2652  ret = hls_start(s, vs);
2653  vs->start_pos = 0;
2654  /* When split segment by byte, the duration is short than hls_time,
2655  * so it is not enough one segment duration as hls_time, */
2656  } else {
2657  vs->start_pos = new_start_pos;
2658  }
2659  } else {
2660  vs->start_pos = new_start_pos;
2661  sls_flag_file_rename(hls, vs, old_filename);
2662  ret = hls_start(s, vs);
2663  }
2664  vs->number++;
2665  av_freep(&old_filename);
2666 
2667  if (ret < 0) {
2668  return ret;
2669  }
2670 
2671  }
2672 
2673  vs->packets_written++;
2674  if (oc->pb) {
2675  int64_t keyframe_pre_pos = avio_tell(oc->pb);
2676  ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2677  if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2678  (pkt->flags & AV_PKT_FLAG_KEY) && !keyframe_pre_pos) {
2679  av_write_frame(oc, NULL); /* Flush any buffered data */
2680  vs->video_keyframe_size = avio_tell(oc->pb) - keyframe_pre_pos;
2681  }
2682  vs->video_keyframe_pos = vs->start_pos;
2683  if (hls->ignore_io_errors)
2684  ret = 0;
2685  }
2686 
2687  return ret;
2688 }
2689 
2691 {
2692  HLSContext *hls = s->priv_data;
2693  int i = 0;
2694  VariantStream *vs = NULL;
2695 
2696  for (i = 0; i < hls->nb_varstreams; i++) {
2697  vs = &hls->var_streams[i];
2698 
2699  av_freep(&vs->basename);
2702  av_freep(&vs->vtt_basename);
2703  av_freep(&vs->vtt_m3u8_name);
2704 
2707  if (hls->resend_init_file)
2708  av_freep(&vs->init_buffer);
2711  av_freep(&vs->m3u8_name);
2712  av_freep(&vs->streams);
2713  }
2714 
2715  ff_format_io_close(s, &hls->m3u8_out);
2717  av_freep(&hls->key_basename);
2718  av_freep(&hls->var_streams);
2719  av_freep(&hls->cc_streams);
2720  av_freep(&hls->master_m3u8_url);
2721 }
2722 
2724 {
2725  HLSContext *hls = s->priv_data;
2726  AVFormatContext *oc = NULL;
2727  AVFormatContext *vtt_oc = NULL;
2728  char *old_filename = NULL;
2729  const char *proto = NULL;
2730  int use_temp_file = 0;
2731  int i;
2732  int ret = 0;
2733  VariantStream *vs = NULL;
2735  int range_length, byterange_mode;
2736 
2737  for (i = 0; i < hls->nb_varstreams; i++) {
2738  char *filename = NULL;
2739  vs = &hls->var_streams[i];
2740  oc = vs->avf;
2741  vtt_oc = vs->vtt_avf;
2742  old_filename = av_strdup(oc->url);
2743  use_temp_file = 0;
2744 
2745  if (!old_filename) {
2746  return AVERROR(ENOMEM);
2747  }
2748  if (hls->key_info_file || hls->encrypt) {
2749  av_dict_set(&options, "encryption_key", vs->key_string, 0);
2750  av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2751  filename = av_asprintf("crypto:%s", oc->url);
2752  } else {
2753  filename = av_asprintf("%s", oc->url);
2754  }
2755  if (!filename) {
2756  av_freep(&old_filename);
2757  return AVERROR(ENOMEM);
2758  }
2759 
2760  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2761  int range_length = 0;
2762  if (!vs->init_range_length) {
2763  uint8_t *buffer = NULL;
2764  av_write_frame(oc, NULL); /* Flush any buffered data */
2765 
2766  range_length = avio_close_dyn_buf(oc->pb, &buffer);
2767  avio_write(vs->out, buffer, range_length);
2768  av_freep(&buffer);
2769  vs->init_range_length = range_length;
2770  avio_open_dyn_buf(&oc->pb);
2771  vs->packets_written = 0;
2772  vs->start_pos = range_length;
2773  byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2774  if (!byterange_mode) {
2775  ff_format_io_close(s, &vs->out);
2777  }
2778  }
2779  }
2780  if (!(hls->flags & HLS_SINGLE_FILE)) {
2781  set_http_options(s, &options, hls);
2782  ret = hlsenc_io_open(s, &vs->out, filename, &options);
2783  if (ret < 0) {
2784  av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2785  goto failed;
2786  }
2787  if (hls->segment_type == SEGMENT_TYPE_FMP4)
2788  write_styp(vs->out);
2789  }
2790  ret = flush_dynbuf(vs, &range_length);
2791  if (ret < 0)
2792  goto failed;
2793 
2794  vs->size = range_length;
2795  ret = hlsenc_io_close(s, &vs->out, filename);
2796  if (ret < 0) {
2797  av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2798  ff_format_io_close(s, &vs->out);
2799  ret = hlsenc_io_open(s, &vs->out, filename, &options);
2800  if (ret < 0) {
2801  av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2802  goto failed;
2803  }
2804  reflush_dynbuf(vs, &range_length);
2805  ret = hlsenc_io_close(s, &vs->out, filename);
2806  if (ret < 0)
2807  av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2808  }
2809  if (hls->flags & HLS_SINGLE_FILE) {
2810  if (hls->key_info_file || hls->encrypt) {
2811  vs->size = append_single_file(s, vs);
2812  }
2814  }
2815 failed:
2816  av_freep(&vs->temp_buffer);
2818  av_freep(&filename);
2819  av_write_trailer(oc);
2820  if (oc->url[0]) {
2821  proto = avio_find_protocol_name(oc->url);
2822  use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2823  }
2824 
2825  // rename that segment from .tmp to the real one
2826  if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2827  hls_rename_temp_file(s, oc);
2828  av_freep(&old_filename);
2829  old_filename = av_strdup(oc->url);
2830 
2831  if (!old_filename) {
2832  return AVERROR(ENOMEM);
2833  }
2834  }
2835 
2836  /* after av_write_trailer, then duration + 1 duration per packet */
2837  hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2838 
2839  sls_flag_file_rename(hls, vs, old_filename);
2840 
2841  if (vtt_oc) {
2842  if (vtt_oc->pb)
2843  av_write_trailer(vtt_oc);
2844  vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2845  ff_format_io_close(s, &vtt_oc->pb);
2846  }
2847  ret = hls_window(s, 1, vs);
2848  if (ret < 0) {
2849  av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2850  ff_format_io_close(s, &vs->out);
2851  hls_window(s, 1, vs);
2852  }
2853  ffio_free_dyn_buf(&oc->pb);
2854 
2855  av_free(old_filename);
2856  }
2857 
2858  return 0;
2859 }
2860 
2861 
2863 {
2864  int ret = 0;
2865  int i = 0;
2866  int j = 0;
2867  HLSContext *hls = s->priv_data;
2868  const char *pattern;
2869  VariantStream *vs = NULL;
2870  const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2871  char *p = NULL;
2872  int http_base_proto = ff_is_http_proto(s->url);
2873  int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2874  double initial_program_date_time = av_gettime() / 1000000.0;
2875 
2876  if (hls->use_localtime) {
2878  } else {
2879  pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2880  if (hls->flags & HLS_SINGLE_FILE)
2881  pattern += 2;
2882  }
2883 
2884  hls->has_default_key = 0;
2885  hls->has_video_m3u8 = 0;
2887  if (ret < 0) {
2888  av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2889  ret);
2890  return ret;
2891  }
2892 
2893  if (!hls->method && http_base_proto) {
2894  av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2895  }
2896 
2897  ret = validate_name(hls->nb_varstreams, s->url);
2898  if (ret < 0)
2899  return ret;
2900 
2901  if (hls->segment_filename) {
2902  ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2903  if (ret < 0)
2904  return ret;
2905  }
2906 
2907  if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2909  if (ret < 0)
2910  return ret;
2911  }
2912 
2913  if (hls->subtitle_filename) {
2914  ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2915  if (ret < 0)
2916  return ret;
2917  }
2918 
2919  if (hls->master_pl_name) {
2920  ret = update_master_pl_info(s);
2921  if (ret < 0) {
2922  av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2923  ret);
2924  return ret;
2925  }
2926  }
2927 
2931  time_t t = time(NULL);
2933  hls->start_sequence = av_gettime();
2935  hls->start_sequence = (int64_t)t;
2937  char b[15];
2938  struct tm *p, tmbuf;
2939  if (!(p = localtime_r(&t, &tmbuf)))
2940  return AVERROR(errno);
2941  if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2942  return AVERROR(ENOMEM);
2943  hls->start_sequence = strtoll(b, NULL, 10);
2944  }
2945  av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2946  }
2947 
2948  hls->recording_time = hls->init_time ? hls->init_time : hls->time;
2949 
2950  if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2951  // Independent segments cannot be guaranteed when splitting by time
2954  "'split_by_time' and 'independent_segments' cannot be "
2955  "enabled together. Disabling 'independent_segments' flag\n");
2956  }
2957 
2958  for (i = 0; i < hls->nb_varstreams; i++) {
2959  vs = &hls->var_streams[i];
2960 
2961  ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2962  if (ret < 0)
2963  return ret;
2964 
2965  vs->sequence = hls->start_sequence;
2966  vs->start_pts = AV_NOPTS_VALUE;
2967  vs->end_pts = AV_NOPTS_VALUE;
2968  vs->current_segment_final_filename_fmt[0] = '\0';
2969  vs->initial_prog_date_time = initial_program_date_time;
2970 
2971  for (j = 0; j < vs->nb_streams; j++) {
2973  /* Get one video stream to reference for split segments
2974  * so use the first video stream index. */
2975  if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2976  vs->reference_stream_index = vs->streams[j]->index;
2977  }
2979  }
2980 
2981  if (vs->has_video > 1)
2982  av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2983  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2984  vs->oformat = av_guess_format("mp4", NULL, NULL);
2985  } else {
2986  vs->oformat = av_guess_format("mpegts", NULL, NULL);
2987  }
2988  if (!vs->oformat)
2989  return AVERROR_MUXER_NOT_FOUND;
2990 
2991  if (hls->segment_filename) {
2992  ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2993  if (ret < 0)
2994  return ret;
2995  } else {
2996  p = strrchr(vs->m3u8_name, '.');
2997  if (p)
2998  *p = '\0';
2999 
3000  vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
3001  if (!vs->basename)
3002  return AVERROR(ENOMEM);
3003 
3004  if (p)
3005  *p = '.';
3006  }
3007 
3008  if (hls->segment_type == SEGMENT_TYPE_FMP4) {
3009  if (hls->nb_varstreams > 1)
3010  fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
3011  if (hls->flags & HLS_SINGLE_FILE) {
3013  if (!vs->fmp4_init_filename)
3014  return AVERROR(ENOMEM);
3015  } else {
3016  vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
3017  if (!vs->fmp4_init_filename)
3018  return AVERROR(ENOMEM);
3020  fmp4_init_filename_len);
3021  if (hls->nb_varstreams > 1) {
3022  if (av_stristr(vs->fmp4_init_filename, "%v")) {
3024  ret = format_name(hls->fmp4_init_filename,
3025  &vs->fmp4_init_filename, i, vs->varname);
3026  } else {
3027  ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
3028  }
3029  if (ret < 0)
3030  return ret;
3031  }
3032 
3033  if (hls->use_localtime) {
3034  int r;
3035  char *expanded = NULL;
3036 
3037  r = strftime_expand(vs->fmp4_init_filename, &expanded);
3038  if (r < 0) {
3039  av_log(s, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
3040  return r;
3041  }
3043  vs->fmp4_init_filename = expanded;
3044  }
3045 
3046  p = strrchr(vs->m3u8_name, '/');
3047  if (p) {
3048  char tmp = *(++p);
3049  *p = '\0';
3050  vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
3051  vs->fmp4_init_filename);
3052  *p = tmp;
3053  } else {
3055  }
3056  if (!vs->base_output_dirname)
3057  return AVERROR(ENOMEM);
3058  }
3059  }
3060 
3062  if (ret < 0)
3063  return ret;
3064 
3065  if (vs->has_subtitle) {
3066  vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
3067  if (!vs->vtt_oformat)
3068  return AVERROR_MUXER_NOT_FOUND;
3069 
3070  p = strrchr(vs->m3u8_name, '.');
3071  if (p)
3072  *p = '\0';
3073 
3074  vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
3075  if (!vs->vtt_basename)
3076  return AVERROR(ENOMEM);
3077 
3078  if (hls->subtitle_filename) {
3079  ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
3080  if (ret < 0)
3081  return ret;
3082  } else {
3083  vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
3084  if (!vs->vtt_m3u8_name)
3085  return AVERROR(ENOMEM);
3086  }
3087  if (p)
3088  *p = '.';
3089  }
3090 
3091  if ((ret = hls_mux_init(s, vs)) < 0)
3092  return ret;
3093 
3094  if (hls->flags & HLS_APPEND_LIST) {
3095  parse_playlist(s, vs->m3u8_name, vs);
3096  vs->discontinuity = 1;
3097  if (hls->init_time > 0) {
3098  av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3099  " hls_init_time value will have no effect\n");
3100  hls->init_time = 0;
3101  hls->recording_time = hls->time;
3102  }
3103  }
3104 
3105  if ((ret = hls_start(s, vs)) < 0)
3106  return ret;
3107  vs->number++;
3108  }
3109 
3110  return ret;
3111 }
3112 
3113 #define OFFSET(x) offsetof(HLSContext, x)
3114 #define E AV_OPT_FLAG_ENCODING_PARAM
3115 static const AVOption options[] = {
3116  {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3117  {"hls_time", "set segment length", OFFSET(time), AV_OPT_TYPE_DURATION, {.i64 = 2000000}, 0, INT64_MAX, E},
3118  {"hls_init_time", "set segment length at init list", OFFSET(init_time), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E},
3119  {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3120  {"hls_delete_threshold", "set number of unreferenced segments to keep before deleting", OFFSET(hls_delete_threshold), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, E},
3121  {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
3122  {"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},
3123 #if FF_API_HLS_WRAP
3124  {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3125 #endif
3126  {"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},
3127  {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3128  {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3129  {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3130  {"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},
3131  {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3132  {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3133  {"hls_enc_key_url", "url to access the key to decrypt the segments", OFFSET(key_url), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3134  {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3135  {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3136  {"hls_segment_type", "set hls segment files type", OFFSET(segment_type), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, SEGMENT_TYPE_FMP4, E, "segment_type"},
3137  {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3138  {"fmp4", "make segment file to fragment mp4 files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_FMP4 }, 0, UINT_MAX, E, "segment_type"},
3139  {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3140  {"hls_fmp4_init_resend", "resend fragment mp4 init file after refresh m3u8 every time", OFFSET(resend_init_file), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3141  {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3142  {"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"},
3143  {"temp_file", "write segment and playlist to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"},
3144  {"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"},
3145  {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3146  {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3147  {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3148  {"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"},
3149  {"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"},
3150  {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3151  {"second_level_segment_index", "include segment index in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_INDEX }, 0, UINT_MAX, E, "flags"},
3152  {"second_level_segment_duration", "include segment duration in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_DURATION }, 0, UINT_MAX, E, "flags"},
3153  {"second_level_segment_size", "include segment size in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_SIZE }, 0, UINT_MAX, E, "flags"},
3154  {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3155  {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3156  {"iframes_only", "add EXT-X-I-FRAMES-ONLY, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_I_FRAMES_ONLY }, 0, UINT_MAX, E, "flags"},
3157 #if FF_API_HLS_USE_LOCALTIME
3158  {"use_localtime", "set filename expansion with strftime at segment creation(will be deprecated)", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3159 #endif
3160  {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3161 #if FF_API_HLS_USE_LOCALTIME
3162  {"use_localtime_mkdir", "create last directory component in strftime-generated filename(will be deprecated)", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3163 #endif
3164  {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3165  {"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" },
3166  {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3167  {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3168  {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3169  {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_LAST-1, E, "start_sequence_source_type" },
3170  {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3171  {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3172  {"epoch_us", "microseconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3173  {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3174  {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3175  {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3176  {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3177  {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3178  {"master_pl_publish_rate", "Publish master play list every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
3179  {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3180  {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3181  {"ignore_io_errors", "Ignore IO errors for stable long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
3182  {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3183  { NULL },
3184 };
3185 
3186 static const AVClass hls_class = {
3187  .class_name = "hls muxer",
3188  .item_name = av_default_item_name,
3189  .option = options,
3190  .version = LIBAVUTIL_VERSION_INT,
3191 };
3192 
3193 
3195  .name = "hls",
3196  .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3197  .extensions = "m3u8",
3198  .priv_data_size = sizeof(HLSContext),
3199  .audio_codec = AV_CODEC_ID_AAC,
3200  .video_codec = AV_CODEC_ID_H264,
3201  .subtitle_codec = AV_CODEC_ID_WEBVTT,
3203  .init = hls_init,
3207  .deinit = hls_deinit,
3208  .priv_class = &hls_class,
3209 };
#define wrap(func)
Definition: neontest.h:65
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;} return ac;} 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;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
uint8_t * ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len, uint32_t *dst_len, int header_len)
Definition: avc.c:269
#define FF_PROFILE_UNKNOWN
Definition: avcodec.h:1859
#define FF_LEVEL_UNKNOWN
Definition: avcodec.h:1985
Main libavformat public API header.
int avformat_alloc_output_context2(AVFormatContext **ctx, ff_const59 AVOutputFormat *oformat, const char *format_name, const char *filename)
Allocate an AVFormatContext for an output format.
Definition: mux.c:136
#define AVFMT_NODIMENSIONS
Format does not need width/height.
Definition: avformat.h:466
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:471
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
#define ff_const59
The ff_const59 define is not part of the public API and will be removed without further warning.
Definition: avformat.h:533
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
int ffurl_shutdown(URLContext *h, int flags)
Signal the URLContext that we are done reading or writing the stream.
Definition: avio.c:651
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:467
int ff_rename(const char *url_src, const char *url_dst, void *logctx)
Wrap avpriv_io_move and log if error happens.
Definition: avio.c:665
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:383
#define AVIO_FLAG_READ
read-only
Definition: avio.h:674
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:364
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:675
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1424
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:633
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1169
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:245
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1379
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1454
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
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:1142
URLContext * ffio_geturlcontext(AVIOContext *s)
Return the URLContext associated with the AVIOContext.
Definition: aviobuf.c:979
int ff_get_chomp_line(AVIOContext *s, char *buf, int maxlen)
Same as ff_get_line but strip the white-space characters in the text tail.
Definition: aviobuf.c:806
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
Read a whole line of text from AVIOContext.
Definition: aviobuf.c:789
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
Append data to a print buffer.
Definition: bprint.c:158
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
#define AV_BPRINT_SIZE_UNLIMITED
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: codec_par.c:72
#define fn(a)
#define fn2(a, b, c)
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define FFMAX(a, b)
Definition: common.h:103
#define HAVE_LIBC_MSVCRT
Definition: config.h:272
#define NULL
Definition: coverity.c:32
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
static int nb_streams
Definition: ffprobe.c:283
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
@ AV_OPT_TYPE_INT64
Definition: opt.h:226
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_DICT
Definition: opt.h:232
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
@ AV_CODEC_ID_EAC3
Definition: codec_id.h:464
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
@ AV_CODEC_ID_WEBVTT
Definition: codec_id.h:542
@ AV_CODEC_ID_MP2
Definition: codec_id.h:424
@ AV_CODEC_ID_HEVC
Definition: codec_id.h:223
@ AV_CODEC_ID_AAC
Definition: codec_id.h:426
@ AV_CODEC_ID_AC3
Definition: codec_id.h:427
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:425
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
@ AV_PKT_DATA_CPB_PROPERTIES
This side data corresponds to the AVCPBProperties struct.
Definition: packet.h:145
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, size_t *size)
Get side information from stream.
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4432
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4505
av_warn_unused_result int avformat_init_output(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and initialize the codec, but do not write the header.
Definition: mux.c:486
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:506
ff_const59 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:51
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1274
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:1212
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
enum AVCodecID av_codec_get_id(const struct AVCodecTag *const *tags, unsigned int tag)
Get the AVCodecID for the given codec tag tag.
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
#define AV_DICT_APPEND
If the entry already exists, append to it.
Definition: dict.h:77
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
#define AV_DICT_DONT_OVERWRITE
Don't overwrite existing entries.
Definition: dict.h:76
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:35
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:147
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_MUXER_NOT_FOUND
Muxer not found.
Definition: error.h:60
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
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 * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
AVMediaType
Definition: avutil.h:199
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
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 * av_basename(const char *path)
Thread safe basename.
Definition: avstring.c:260
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok().
Definition: avstring.c:186
char * av_stristr(const char *s1, const char *s2)
Locate the first case-independent occurrence in the string haystack of the string needle.
Definition: avstring.c:56
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:215
static av_const int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
Definition: avstring.h:211
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
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
char * av_append_path_component(const char *path, const char *component)
Append path component to the existing path.
Definition: avstring.c:304
const char * av_dirname(char *path)
Thread safe dirname.
Definition: avstring.c:283
int av_stristart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str independent of case.
Definition: avstring.c:45
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:225
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:465
int index
Definition: gxfenc.c:89
static int sls_flag_check_duration_size_index(HLSContext *hls)
Definition: hlsenc.c:1011
#define E
Definition: hlsenc.c:3114
static int update_variant_stream_info(AVFormatContext *s)
Definition: hlsenc.c:2230
static int64_t get_stream_bit_rate(AVStream *stream)
Definition: hlsenc.c:1359
static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls, VariantStream *vs, HLSSegment *en, double duration, int64_t pos, int64_t size)
Definition: hlsenc.c:971
static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
Definition: hlsenc.c:328
static int hls_init(AVFormatContext *s)
Definition: hlsenc.c:2862
static int create_master_playlist(AVFormatContext *s, VariantStream *const input_vs)
Definition: hlsenc.c:1375
static const AVOption options[]
Definition: hlsenc.c:3115
static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
Definition: hlsenc.c:1541
static HLSSegment * find_segment_by_filename(HLSSegment *segment, const char *filename)
Definition: hlsenc.c:961
SegmentType
Definition: hlsenc.c:113
@ SEGMENT_TYPE_FMP4
Definition: hlsenc.c:115
@ SEGMENT_TYPE_MPEGTS
Definition: hlsenc.c:114
AVOutputFormat ff_hls_muxer
Definition: hlsenc.c:3194
static int validate_name(int nb_vs, const char *fn)
Definition: hlsenc.c:1912
#define KEYSIZE
Definition: hlsenc.c:70
static int get_nth_codec_stream_index(AVFormatContext *s, enum AVMediaType codec_type, int64_t stream_id)
Definition: hlsenc.c:1992
static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
Definition: hlsenc.c:1324
static int hls_delete_file(HLSContext *hls, AVFormatContext *avf, const char *path, const char *proto)
Definition: hlsenc.c:569
static int parse_variant_stream_mapstring(AVFormatContext *s)
Definition: hlsenc.c:2010
static int append_postfix(char *name, int name_buf_len, int i)
Definition: hlsenc.c:1893
static void hls_free_segments(HLSSegment *p)
Definition: hlsenc.c:1313
static int hls_write_header(AVFormatContext *s)
Definition: hlsenc.c:2310
static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, VariantStream *vs, double duration, int64_t pos, int64_t size)
Definition: hlsenc.c:1109
static int format_name(const char *buf, char **s, int index, const char *varname)
Definition: hlsenc.c:1946
static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
Definition: hlsenc.c:478
static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
Definition: hlsenc.c:438
static void reflush_dynbuf(VariantStream *vs, int *range_length)
Definition: hlsenc.c:557
static int do_encrypt(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:714
static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
Definition: hlsenc.c:1061
static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
Definition: hlsenc.c:307
static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:2369
static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:2386
static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename)
Definition: hlsenc.c:1054
static int strftime_expand(const char *fmt, char **dest)
Definition: hlsenc.c:263
static int hls_write_trailer(struct AVFormatContext *s)
Definition: hlsenc.c:2723
static void hls_deinit(AVFormatContext *s)
Definition: hlsenc.c:2690
StartSequenceSourceType
Definition: hlsenc.c:57
@ HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH
Definition: hlsenc.c:61
@ HLS_START_SEQUENCE_AS_FORMATTED_DATETIME
Definition: hlsenc.c:60
@ HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH
Definition: hlsenc.c:59
@ HLS_START_SEQUENCE_LAST
Definition: hlsenc.c:62
@ HLS_START_SEQUENCE_AS_START_NUMBER
Definition: hlsenc.c:58
static int flush_dynbuf(VariantStream *vs, int *range_length)
Definition: hlsenc.c:536
static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
Definition: hlsenc.c:1877
static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
Definition: hlsenc.c:1202
#define HLS_MICROSECOND_UNIT
Definition: hlsenc.c:72
#define POSTFIX_PATTERN
Definition: hlsenc.c:74
static int hls_start(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:1680
static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename, AVDictionary **options)
Definition: hlsenc.c:286
static void write_styp(AVIOContext *pb)
Definition: hlsenc.c:526
static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:788
static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hlsenc.c:2418
static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
Definition: hlsenc.c:847
static int parse_cc_stream_mapstring(AVFormatContext *s)
Definition: hlsenc.c:2153
#define OFFSET(x)
Definition: hlsenc.c:3113
static const AVClass hls_class
Definition: hlsenc.c:3186
static int randomize(uint8_t *buf, int len)
Definition: hlsenc.c:700
HLSFlags
Definition: hlsenc.c:94
@ HLS_OMIT_ENDLIST
Definition: hlsenc.c:100
@ HLS_PERIODIC_REKEY
Definition: hlsenc.c:108
@ HLS_SINGLE_FILE
Definition: hlsenc.c:96
@ HLS_DELETE_SEGMENTS
Definition: hlsenc.c:97
@ HLS_APPEND_LIST
Definition: hlsenc.c:102
@ HLS_TEMP_FILE
Definition: hlsenc.c:107
@ HLS_SECOND_LEVEL_SEGMENT_INDEX
Definition: hlsenc.c:104
@ HLS_PROGRAM_DATE_TIME
Definition: hlsenc.c:103
@ HLS_ROUND_DURATIONS
Definition: hlsenc.c:98
@ HLS_SPLIT_BY_TIME
Definition: hlsenc.c:101
@ HLS_DISCONT_START
Definition: hlsenc.c:99
@ HLS_INDEPENDENT_SEGMENTS
Definition: hlsenc.c:109
@ HLS_SECOND_LEVEL_SEGMENT_DURATION
Definition: hlsenc.c:105
@ HLS_SECOND_LEVEL_SEGMENT_SIZE
Definition: hlsenc.c:106
@ HLS_I_FRAMES_ONLY
Definition: hlsenc.c:110
CodecAttributeStatus
Definition: hlsenc.c:65
@ CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN
Definition: hlsenc.c:67
@ CODEC_ATTRIBUTE_WRITTEN
Definition: hlsenc.c:66
#define BUFSIZE
Definition: hlsenc.c:73
static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls, VariantStream *vs)
Definition: hlsenc.c:589
static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
Definition: hlsenc.c:1034
static const char * get_relative_url(const char *master_url, const char *media_url)
Definition: hlsenc.c:1339
static int update_master_pl_info(AVFormatContext *s)
Definition: hlsenc.c:2268
#define SEPARATOR
Definition: hlsenc.c:566
#define LINE_BUFFER_SIZE
Definition: hlsenc.c:71
static void write_codec_attr(AVStream *st, VariantStream *vs)
Definition: hlsenc.c:347
void ff_hls_write_playlist_version(AVIOContext *out, int version)
Definition: hlsplaylist.c:31
void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache, int target_duration, int64_t sequence, uint32_t playlist_type, int iframe_mode)
Definition: hlsplaylist.c:98
int ff_hls_write_file_entry(AVIOContext *out, int insert_discont, int byterange_mode, double duration, int round_duration, int64_t size, int64_t pos, const char *baseurl, const char *filename, double *prog_date_time, int64_t video_keyframe_size, int64_t video_keyframe_pos, int iframe_mode)
Definition: hlsplaylist.c:132
void ff_hls_write_init_file(AVIOContext *out, const char *filename, int byterange_mode, int64_t size, int64_t pos)
Definition: hlsplaylist.c:122
void ff_hls_write_subtitle_rendition(AVIOContext *out, const char *sgroup, const char *filename, const char *language, int name_id, int is_default)
Definition: hlsplaylist.c:54
void ff_hls_write_audio_rendition(AVIOContext *out, const char *agroup, const char *filename, const char *language, int name_id, int is_default)
Definition: hlsplaylist.c:39
void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, int bandwidth, const char *filename, const char *agroup, const char *codecs, const char *ccgroup, const char *sgroup)
Definition: hlsplaylist.c:69
void ff_hls_write_end_list(AVIOContext *out)
Definition: hlsplaylist.c:189
@ PLAYLIST_TYPE_VOD
Definition: hlsplaylist.h:35
@ PLAYLIST_TYPE_NB
Definition: hlsplaylist.h:36
@ PLAYLIST_TYPE_NONE
Definition: hlsplaylist.h:33
@ PLAYLIST_TYPE_EVENT
Definition: hlsplaylist.h:34
int ff_http_get_shutdown_status(URLContext *h)
Get the HTTP shutdown response status, be used after http_shutdown.
Definition: http.c:376
int ff_http_do_new_request(URLContext *h, const char *uri)
Send a new HTTP request, reusing the old connection.
Definition: http.c:392
const char * key
int i
Definition: input.c:407
#define AV_WB64(p, v)
Definition: intreadwrite.h:433
int ff_is_http_proto(char *filename)
Utility function to check if the file uses http or https protocol.
Definition: utils.c:5695
int ff_mkdir_p(const char *path)
Automatically create sub-directories.
Definition: utils.c:4858
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:1328
void ff_format_set_url(AVFormatContext *s, char *url)
Set AVFormatContext url field to the provided pointer.
Definition: utils.c:5858
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Definition: utils.c:4892
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:4941
#define MAX_URL_SIZE
Definition: internal.h:30
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5688
#define FF_API_HLS_WRAP
Definition: version.h:71
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static av_always_inline av_const double round(double x)
Definition: libm.h:444
const char data[16]
Definition: mxf.c:142
AVOptions.
miscellaneous OS support macros and functions.
misc parsing utilities
const char * name
Definition: qsvenc.c:46
mfxU16 profile
Definition: qsvenc.c:45
enum AVMediaType codec_type
Definition: rtp.c:37
static const uint8_t start_sequence[]
Definition: rtpdec_h264.c:65
static char buffer[20]
Definition: seek.c:32
#define snprintf
Definition: snprintf.h:34
unsigned int pos
Definition: spdifenc.c:412
This structure describes the bitrate properties of an encoded bitstream.
Definition: avcodec.h:453
int max_bitrate
Maximum bitrate of the stream, in bits per second.
Definition: avcodec.h:459
Describe the class of an AVClass context structure.
Definition: log.h:67
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
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int profile
Codec-specific bitstream restrictions that the stream conforms to.
Definition: codec_par.h:120
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
Format I/O context.
Definition: avformat.h:1232
AVIOContext * pb
I/O context.
Definition: avformat.h:1274
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1474
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1542
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1512
char * url
input or output URL.
Definition: avformat.h:1328
void * opaque
User data.
Definition: avformat.h:1752
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1251
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1834
void * priv_data
Format private data.
Definition: avformat.h:1260
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
Definition: avformat.h:1828
Bytestream IO Context.
Definition: avio.h:161
AVOption.
Definition: opt.h:248
const char * name
Definition: avformat.h:491
const struct AVCodecTag *const * codec_tag
List of supported codec_id-codec_tag pairs, ordered by "better choice first".
Definition: avformat.h:516
const AVClass * priv_class
AVClass for the private context.
Definition: avformat.h:519
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
AVDictionary * metadata
Definition: avformat.h:937
int index
stream index in AVFormatContext
Definition: avformat.h:874
int pts_wrap_bits
number of bits in pts (used for wrapping control)
Definition: avformat.h:1055
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
const char * instreamid
Definition: hlsenc.c:190
const char * language
Definition: hlsenc.c:191
const char * ccgroup
Definition: hlsenc.c:189
char * master_pl_name
Definition: hlsenc.c:251
unsigned int nb_ccstreams
Definition: hlsenc.c:244
char * cc_stream_map
Definition: hlsenc.c:250
uint32_t pl_type
Definition: hlsenc.c:207
char * method
Definition: hlsenc.c:238
char * segment_filename
Definition: hlsenc.c:208
int has_video_m3u8
Definition: hlsenc.c:260
ClosedCaptionsStream * cc_streams
Definition: hlsenc.c:243
int hls_delete_threshold
Definition: hlsenc.c:202
AVDictionary * format_options
Definition: hlsenc.c:222
int ignore_io_errors
Definition: hlsenc.c:257
char * subtitle_filename
Definition: hlsenc.c:221
int encrypt_started
Definition: hlsenc.c:229
unsigned int master_publish_rate
Definition: hlsenc.c:252
char * iv
Definition: hlsenc.c:227
char * master_m3u8_url
Definition: hlsenc.c:247
char * key_info_file
Definition: hlsenc.c:231
char * user_agent
Definition: hlsenc.c:239
uint32_t flags
Definition: hlsenc.c:206
char * key_basename
Definition: hlsenc.c:228
int has_default_key
Definition: hlsenc.c:259
int wrap
Definition: hlsenc.c:204
char * headers
Definition: hlsenc.c:258
int http_persistent
Definition: hls.c:212
VariantStream * var_streams
Definition: hlsenc.c:241
uint32_t start_sequence_source_type
Definition: hlsenc.c:197
AVIOContext * sub_m3u8_out
Definition: hlsenc.c:255
char key_string[KEYSIZE *2+1]
Definition: hlsenc.c:234
int version
Definition: hlsenc.c:248
char * fmp4_init_filename
Definition: hlsenc.c:209
int max_nb_segments
Definition: hlsenc.c:201
char * var_stream_map
Definition: hlsenc.c:249
int segment_type
Definition: hlsenc.c:210
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:233
int use_localtime_mkdir
flag to mkdir dirname in timebased filename
Definition: hlsenc.c:214
AVIOContext * m3u8_out
Definition: hlsenc.c:254
char * vtt_format_options_str
Definition: hlsenc.c:220
int64_t timeout
Definition: hlsenc.c:256
int use_localtime
flag to expand filename with localtime
Definition: hlsenc.c:213
int64_t init_time
Definition: hlsenc.c:200
int64_t time
Definition: hlsenc.c:199
char * key_url
Definition: hlsenc.c:226
int64_t max_seg_size
Definition: hlsenc.c:217
int64_t start_sequence
Definition: hlsenc.c:196
unsigned int nb_varstreams
Definition: hlsenc.c:242
int resend_init_file
resend init file into disk after refresh m3u8
Definition: hlsenc.c:211
int allowcache
Definition: hlsenc.c:215
char * baseurl
Definition: hlsenc.c:219
char * key
Definition: hlsenc.c:225
int64_t recording_time
Definition: hlsenc.c:216
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:235
AVDictionary * vtt_format_options
Definition: hlsenc.c:236
char key_file[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:232
int encrypt
Definition: hlsenc.c:224
int master_m3u8_created
Definition: hlsenc.c:246
int discont
Definition: hlsenc.c:80
char filename[MAX_URL_SIZE]
Definition: hlsenc.c:77
double discont_program_date_time
Definition: hlsenc.c:91
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:87
double duration
Definition: hlsenc.c:79
struct HLSSegment * next
Definition: hlsenc.c:90
char sub_filename[MAX_URL_SIZE]
Definition: hlsenc.c:78
int64_t keyframe_pos
Definition: hlsenc.c:83
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:88
int64_t pos
Definition: hlsenc.c:81
int64_t keyframe_size
Definition: hlsenc.c:84
unsigned var_stream_idx
Definition: hlsenc.c:85
int64_t size
Definition: hlsenc.c:82
Definition: url.h:38
int discontinuity_set
Definition: hlsenc.c:148
int discontinuity
Definition: hlsenc.c:149
char * basename
Definition: hlsenc.c:157
int is_default
Definition: hlsenc.c:180
char key_file[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:170
double initial_prog_date_time
Definition: hlsenc.c:162
const char * language
Definition: hlsenc.c:181
char * vtt_m3u8_name
Definition: hlsenc.c:159
int start_pts_from_audio
Definition: hlsenc.c:137
int64_t size
Definition: hlsenc.c:146
int m3u8_created
Definition: hlsenc.c:179
HLSSegment * old_segments
Definition: hlsenc.c:154
char codec_attr[128]
Definition: hlsenc.c:176
char * vtt_basename
Definition: hlsenc.c:158
int init_range_length
Definition: hlsenc.c:127
int64_t video_keyframe_size
Definition: hlsenc.c:143
AVIOContext * out_single_file
Definition: hlsenc.c:125
unsigned int nb_streams
Definition: hlsenc.c:178
int64_t sequence
Definition: hlsenc.c:121
int encrypt_started
Definition: hlsenc.c:168
uint8_t * init_buffer
Definition: hlsenc.c:129
int has_subtitle
Definition: hlsenc.c:135
int nb_entries
Definition: hlsenc.c:147
AVStream ** streams
Definition: hlsenc.c:175
int64_t end_pts
Definition: hlsenc.c:140
int reference_stream_index
Definition: hlsenc.c:150
char * fmp4_init_filename
Definition: hlsenc.c:165
int64_t start_pos
Definition: hlsenc.c:145
AVIOContext * out
Definition: hlsenc.c:124
const char * agroup
Definition: hlsenc.c:182
char key_string[KEYSIZE *2+1]
Definition: hlsenc.c:172
int64_t start_pts
Definition: hlsenc.c:139
unsigned var_stream_idx
Definition: hlsenc.c:119
uint8_t * temp_buffer
Definition: hlsenc.c:128
ff_const59 AVOutputFormat * vtt_oformat
Definition: hlsenc.c:123
int has_video
Definition: hlsenc.c:134
char key_uri[LINE_BUFFER_SIZE+1]
Definition: hlsenc.c:171
AVFormatContext * vtt_avf
Definition: hlsenc.c:132
int64_t video_keyframe_pos
Definition: hlsenc.c:142
unsigned number
Definition: hlsenc.c:120
const char * sgroup
Definition: hlsenc.c:183
double dpp
Definition: hlsenc.c:138
HLSSegment * segments
Definition: hlsenc.c:152
const char * varname
Definition: hlsenc.c:185
int new_start
Definition: hlsenc.c:136
AVFormatContext * avf
Definition: hlsenc.c:131
const char * ccgroup
Definition: hlsenc.c:184
char * m3u8_name
Definition: hlsenc.c:160
char * base_output_dirname
Definition: hlsenc.c:166
CodecAttributeStatus attr_status
Definition: hlsenc.c:177
char current_segment_final_filename_fmt[MAX_URL_SIZE]
Definition: hlsenc.c:163
char * basename_tmp
Definition: hlsenc.c:156
int packets_written
Definition: hlsenc.c:126
double duration
Definition: hlsenc.c:144
char iv_string[KEYSIZE *2+1]
Definition: hlsenc.c:173
HLSSegment * last_segment
Definition: hlsenc.c:153
int64_t video_lastpos
Definition: hlsenc.c:141
ff_const59 AVOutputFormat * oformat
Definition: hlsenc.c:122
Definition: graph2dot.c:48
Definition: hls.c:68
int64_t duration
Definition: hls.c:69
uint8_t level
Definition: svq3.c:206
#define lrint
Definition: tablegen.h:53
#define av_free(p)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
FILE * out
Definition: movenc.c:54
int64_t duration
Definition: movenc.c:64
AVPacket * pkt
Definition: movenc.c:59
AVFormatContext * ctx
Definition: movenc.c:48
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
#define localtime_r
Definition: time_internal.h:46
int size
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
const char * b
Definition: vf_curves.c:118
const char * r
Definition: vf_curves.c:116
int len
#define M(a, b)
Definition: vp3dsp.c:45
static double c[64]