FFmpeg  4.3.8
dashenc.c
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1 /*
2  * MPEG-DASH ISO BMFF segmenter
3  * Copyright (c) 2014 Martin Storsjo
4  * Copyright (c) 2018 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 #if HAVE_UNISTD_H
25 #include <unistd.h>
26 #endif
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/avutil.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/parseutils.h"
35 #include "libavutil/rational.h"
36 #include "libavutil/time.h"
38 
39 #include "av1.h"
40 #include "avc.h"
41 #include "avformat.h"
42 #include "avio_internal.h"
43 #include "hlsplaylist.h"
44 #if CONFIG_HTTP_PROTOCOL
45 #include "http.h"
46 #endif
47 #include "internal.h"
48 #include "isom.h"
49 #include "os_support.h"
50 #include "url.h"
51 #include "vpcc.h"
52 #include "dash.h"
53 
54 typedef enum {
59 } SegmentType;
60 
61 enum {
67 };
68 
69 #define MPD_PROFILE_DASH 1
70 #define MPD_PROFILE_DVB 2
71 
72 typedef struct Segment {
73  char file[1024];
79  int n;
80 } Segment;
81 
82 typedef struct AdaptationSet {
83  int id;
84  char *descriptor;
87  int frag_type;
88  enum AVMediaType media_type;
90  AVRational min_frame_rate, max_frame_rate;
93  int max_width, max_height;
96  int trick_idx;
98 
99 typedef struct OutputStream {
101  int ctx_inited, as_idx;
106  char initfile[1024];
107  int64_t init_start_pos, pos;
109  int nb_segments, segments_size, segment_index;
114  int64_t first_pts, start_pts, max_pts;
115  int64_t last_dts, last_pts;
117  int bit_rate;
118  SegmentType segment_type; /* segment type selected for this particular stream */
119  const char *format_name;
120  const char *extension_name;
121  const char *single_file_name; /* file names selected for this particular stream */
122  const char *init_seg_name;
123  const char *media_seg_name;
124 
125  char codec_str[100];
127  char filename[1024];
128  char full_path[1024];
129  char temp_path[1024];
132  char producer_reference_time_str[100];
140 } OutputStream;
141 
142 typedef struct DASHContext {
143  const AVClass *class; /* Class for private options. */
146  int nb_as;
149 #if FF_API_DASH_MIN_SEG_DURATION
150  int min_seg_duration;
151 #endif
162  char availability_start_time[100];
163  time_t start_time_s;
165  char dirname[1024];
166  const char *single_file_name; /* file names as specified in options */
167  const char *init_seg_name;
168  const char *media_seg_name;
169  const char *utc_timing_url;
170  const char *method;
171  const char *user_agent;
183  SegmentType segment_type_option; /* segment type as specified in options */
185  int lhls;
186  int ldash;
194  int profile;
199 } DASHContext;
200 
201 static struct codec_string {
202  int id;
203  const char *str;
204 } codecs[] = {
205  { AV_CODEC_ID_VP8, "vp8" },
206  { AV_CODEC_ID_VP9, "vp9" },
207  { AV_CODEC_ID_VORBIS, "vorbis" },
208  { AV_CODEC_ID_OPUS, "opus" },
209  { AV_CODEC_ID_FLAC, "flac" },
210  { 0, NULL }
211 };
212 
213 static struct format_string {
215  const char *str;
216 } formats[] = {
217  { SEGMENT_TYPE_AUTO, "auto" },
218  { SEGMENT_TYPE_MP4, "mp4" },
219  { SEGMENT_TYPE_WEBM, "webm" },
220  { 0, NULL }
221 };
222 
223 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
224  AVDictionary **options) {
225  DASHContext *c = s->priv_data;
226  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
227  int err = AVERROR_MUXER_NOT_FOUND;
228  if (!*pb || !http_base_proto || !c->http_persistent) {
229  err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
230 #if CONFIG_HTTP_PROTOCOL
231  } else {
232  URLContext *http_url_context = ffio_geturlcontext(*pb);
233  av_assert0(http_url_context);
234  err = ff_http_do_new_request(http_url_context, filename);
235  if (err < 0)
236  ff_format_io_close(s, pb);
237 #endif
238  }
239  return err;
240 }
241 
242 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
243  DASHContext *c = s->priv_data;
244  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
245 
246  if (!*pb)
247  return;
248 
249  if (!http_base_proto || !c->http_persistent) {
250  ff_format_io_close(s, pb);
251 #if CONFIG_HTTP_PROTOCOL
252  } else {
253  URLContext *http_url_context = ffio_geturlcontext(*pb);
254  av_assert0(http_url_context);
255  avio_flush(*pb);
256  ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
257 #endif
258  }
259 }
260 
261 static const char *get_format_str(SegmentType segment_type) {
262  int i;
263  for (i = 0; i < SEGMENT_TYPE_NB; i++)
264  if (formats[i].segment_type == segment_type)
265  return formats[i].str;
266  return NULL;
267 }
268 
269 static const char *get_extension_str(SegmentType type, int single_file)
270 {
271  switch (type) {
272 
273  case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
274  case SEGMENT_TYPE_WEBM: return "webm";
275  default: return NULL;
276  }
277 }
278 
279 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
280  DASHContext *c = s->priv_data;
281  char errbuf[AV_ERROR_MAX_STRING_SIZE];
282  av_strerror(err, errbuf, sizeof(errbuf));
284  "Unable to open %s for writing: %s\n", url, errbuf);
285  return c->ignore_io_errors ? 0 : err;
286 }
287 
289 {
290  if (segment_type == SEGMENT_TYPE_AUTO) {
291  if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
292  codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
293  segment_type = SEGMENT_TYPE_WEBM;
294  } else {
295  segment_type = SEGMENT_TYPE_MP4;
296  }
297  }
298 
299  return segment_type;
300 }
301 
303 {
304  DASHContext *c = s->priv_data;
305  int has_mp4_streams = 0;
306  for (int i = 0; i < s->nb_streams; ++i) {
307  OutputStream *os = &c->streams[i];
308  SegmentType segment_type = select_segment_type(
310  os->segment_type = segment_type;
311  os->format_name = get_format_str(segment_type);
312  if (!os->format_name) {
313  av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
315  }
316  os->extension_name = get_extension_str(segment_type, c->single_file);
317  if (!os->extension_name) {
318  av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
320  }
321 
322  has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
323  }
324 
325  if (c->hls_playlist && !has_mp4_streams) {
326  av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
327  c->hls_playlist = 0;
328  }
329 
330  return 0;
331 }
332 
333 static int check_file_extension(const char *filename, const char *extension) {
334  char *dot;
335  if (!filename || !extension)
336  return -1;
337  dot = strrchr(filename, '.');
338  if (dot && !strcmp(dot + 1, extension))
339  return 0;
340  return -1;
341 }
342 
344  AVRational *frame_rate, char *str, int size) {
345  VPCC vpcc;
346  int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
347  if (ret == 0) {
348  av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
349  vpcc.profile, vpcc.level, vpcc.bitdepth);
350  } else {
351  // Default to just vp9 in case of error while finding out profile or level
352  av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
353  av_strlcpy(str, "vp9", size);
354  }
355  return;
356 }
357 
359  AVRational *frame_rate, char *str, int size)
360 {
361  const AVCodecTag *tags[2] = { NULL, NULL };
362  uint32_t tag;
363  int i;
364 
365  // common Webm codecs are not part of RFC 6381
366  for (i = 0; codecs[i].id; i++)
367  if (codecs[i].id == par->codec_id) {
368  if (codecs[i].id == AV_CODEC_ID_VP9) {
369  set_vp9_codec_str(s, par, frame_rate, str, size);
370  } else {
371  av_strlcpy(str, codecs[i].str, size);
372  }
373  return;
374  }
375 
376  // for codecs part of RFC 6381
377  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
378  tags[0] = ff_codec_movvideo_tags;
379  else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
380  tags[0] = ff_codec_movaudio_tags;
381  else
382  return;
383 
384  tag = par->codec_tag;
385  if (!tag)
386  tag = av_codec_get_tag(tags, par->codec_id);
387  if (!tag)
388  return;
389  if (size < 5)
390  return;
391 
392  AV_WL32(str, tag);
393  str[4] = '\0';
394  if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
395  uint32_t oti;
396  tags[0] = ff_mp4_obj_type;
397  oti = av_codec_get_tag(tags, par->codec_id);
398  if (oti)
399  av_strlcatf(str, size, ".%02"PRIx32, oti);
400  else
401  return;
402 
403  if (tag == MKTAG('m', 'p', '4', 'a')) {
404  if (par->extradata_size >= 2) {
405  int aot = par->extradata[0] >> 3;
406  if (aot == 31)
407  aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
408  av_strlcatf(str, size, ".%d", aot);
409  }
410  } else if (tag == MKTAG('m', 'p', '4', 'v')) {
411  // Unimplemented, should output ProfileLevelIndication as a decimal number
412  av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
413  }
414  } else if (!strcmp(str, "avc1")) {
415  uint8_t *tmpbuf = NULL;
416  uint8_t *extradata = par->extradata;
417  int extradata_size = par->extradata_size;
418  if (!extradata_size)
419  return;
420  if (extradata[0] != 1) {
421  AVIOContext *pb;
422  if (avio_open_dyn_buf(&pb) < 0)
423  return;
424  if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
425  ffio_free_dyn_buf(&pb);
426  return;
427  }
428  extradata_size = avio_close_dyn_buf(pb, &extradata);
429  tmpbuf = extradata;
430  }
431 
432  if (extradata_size >= 4)
433  av_strlcatf(str, size, ".%02x%02x%02x",
434  extradata[1], extradata[2], extradata[3]);
435  av_free(tmpbuf);
436  } else if (!strcmp(str, "av01")) {
438  if (!par->extradata_size)
439  return;
440  if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
441  return;
442 
443  av_strlcatf(str, size, ".%01u.%02u%s.%02u",
444  seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
446  av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
447  seq.monochrome,
450  seq.color_range);
451  }
452 }
453 
455 {
456  uint8_t *buffer;
457 
458  if (!os->ctx->pb) {
459  return AVERROR(EINVAL);
460  }
461 
462  // flush
463  av_write_frame(os->ctx, NULL);
464  avio_flush(os->ctx->pb);
465 
466  if (!c->single_file) {
467  // write out to file
468  *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
469  os->ctx->pb = NULL;
470  if (os->out)
471  avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
472  os->written_len = 0;
473  av_free(buffer);
474 
475  // re-open buffer
476  return avio_open_dyn_buf(&os->ctx->pb);
477  } else {
478  *range_length = avio_tell(os->ctx->pb) - os->pos;
479  return 0;
480  }
481 }
482 
484 {
485  if (c->method)
486  av_dict_set(options, "method", c->method, 0);
487  av_dict_copy(options, c->http_opts, 0);
488  if (c->user_agent)
489  av_dict_set(options, "user_agent", c->user_agent, 0);
490  if (c->http_persistent)
491  av_dict_set_int(options, "multiple_requests", 1, 0);
492  if (c->timeout >= 0)
493  av_dict_set_int(options, "timeout", c->timeout, 0);
494 }
495 
496 static void get_hls_playlist_name(char *playlist_name, int string_size,
497  const char *base_url, int id) {
498  if (base_url)
499  snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
500  else
501  snprintf(playlist_name, string_size, "media_%d.m3u8", id);
502 }
503 
505  int *start_index, int *start_number) {
506  *start_index = 0;
507  *start_number = 1;
508  if (c->window_size) {
509  *start_index = FFMAX(os->nb_segments - c->window_size, 0);
510  *start_number = FFMAX(os->segment_index - c->window_size, 1);
511  }
512 }
513 
515  int representation_id, int final,
516  char *prefetch_url) {
517  DASHContext *c = s->priv_data;
518  int timescale = os->ctx->streams[0]->time_base.den;
519  char temp_filename_hls[1024];
520  char filename_hls[1024];
521  AVDictionary *http_opts = NULL;
522  int target_duration = 0;
523  int ret = 0;
524  const char *proto = avio_find_protocol_name(c->dirname);
525  int use_rename = proto && !strcmp(proto, "file");
526  int i, start_index, start_number;
527  double prog_date_time = 0;
528 
529  get_start_index_number(os, c, &start_index, &start_number);
530 
531  if (!c->hls_playlist || start_index >= os->nb_segments ||
533  return;
534 
535  get_hls_playlist_name(filename_hls, sizeof(filename_hls),
536  c->dirname, representation_id);
537 
538  snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
539 
540  set_http_options(&http_opts, c);
541  ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
542  av_dict_free(&http_opts);
543  if (ret < 0) {
544  handle_io_open_error(s, ret, temp_filename_hls);
545  return;
546  }
547  for (i = start_index; i < os->nb_segments; i++) {
548  Segment *seg = os->segments[i];
549  double duration = (double) seg->duration / timescale;
550  if (target_duration <= duration)
551  target_duration = lrint(duration);
552  }
553 
554  ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
555  start_number, PLAYLIST_TYPE_NONE, 0);
556 
559 
560  for (i = start_index; i < os->nb_segments; i++) {
561  Segment *seg = os->segments[i];
562 
563  if (prog_date_time == 0) {
564  if (os->nb_segments == 1)
565  prog_date_time = c->start_time_s;
566  else
567  prog_date_time = seg->prog_date_time;
568  }
570 
572  (double) seg->duration / timescale, 0,
573  seg->range_length, seg->start_pos, NULL,
574  c->single_file ? os->initfile : seg->file,
575  &prog_date_time, 0, 0, 0);
576  if (ret < 0) {
577  av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
578  }
579  }
580 
581  if (prefetch_url)
582  avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
583 
584  if (final)
586 
587  dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
588 
589  if (use_rename)
590  ff_rename(temp_filename_hls, filename_hls, os->ctx);
591 }
592 
594 {
595  DASHContext *c = s->priv_data;
596  int ret, range_length;
597 
598  ret = flush_dynbuf(c, os, &range_length);
599  if (ret < 0)
600  return ret;
601 
602  os->pos = os->init_range_length = range_length;
603  if (!c->single_file) {
604  char filename[1024];
605  snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
606  dashenc_io_close(s, &os->out, filename);
607  }
608  return 0;
609 }
610 
612 {
613  DASHContext *c = s->priv_data;
614  int i, j;
615 
616  if (c->as) {
617  for (i = 0; i < c->nb_as; i++) {
618  av_dict_free(&c->as[i].metadata);
619  av_freep(&c->as[i].descriptor);
620  }
621  av_freep(&c->as);
622  c->nb_as = 0;
623  }
624 
625  if (!c->streams)
626  return;
627  for (i = 0; i < s->nb_streams; i++) {
628  OutputStream *os = &c->streams[i];
629  if (os->ctx && os->ctx->pb) {
630  if (!c->single_file)
631  ffio_free_dyn_buf(&os->ctx->pb);
632  else
633  avio_close(os->ctx->pb);
634  }
635  ff_format_io_close(s, &os->out);
638  av_parser_close(os->parser);
639  for (j = 0; j < os->nb_segments; j++)
640  av_free(os->segments[j]);
641  av_free(os->segments);
643  av_freep(&os->init_seg_name);
644  av_freep(&os->media_seg_name);
645  }
646  av_freep(&c->streams);
647 
648  ff_format_io_close(s, &c->mpd_out);
650 }
651 
653  int representation_id, int final)
654 {
655  DASHContext *c = s->priv_data;
656  int i, start_index, start_number;
657  get_start_index_number(os, c, &start_index, &start_number);
658 
659  if (c->use_template) {
660  int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
661  avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
662  if (!c->use_timeline) {
663  avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
664  if (c->streaming && os->availability_time_offset)
665  avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
667  }
668  if (c->streaming && os->availability_time_offset && !final)
669  avio_printf(out, "availabilityTimeComplete=\"false\" ");
670 
671  avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
673  avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
674  avio_printf(out, ">\n");
675  if (c->use_timeline) {
676  int64_t cur_time = 0;
677  avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
678  for (i = start_index; i < os->nb_segments; ) {
679  Segment *seg = os->segments[i];
680  int repeat = 0;
681  avio_printf(out, "\t\t\t\t\t\t<S ");
682  if (i == start_index || seg->time != cur_time) {
683  cur_time = seg->time;
684  avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
685  }
686  avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
687  while (i + repeat + 1 < os->nb_segments &&
688  os->segments[i + repeat + 1]->duration == seg->duration &&
689  os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
690  repeat++;
691  if (repeat > 0)
692  avio_printf(out, "r=\"%d\" ", repeat);
693  avio_printf(out, "/>\n");
694  i += 1 + repeat;
695  cur_time += (1 + repeat) * seg->duration;
696  }
697  avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
698  }
699  avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
700  } else if (c->single_file) {
701  avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
702  avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
703  avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
704  for (i = start_index; i < os->nb_segments; i++) {
705  Segment *seg = os->segments[i];
706  avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
707  if (seg->index_length)
708  avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
709  avio_printf(out, "/>\n");
710  }
711  avio_printf(out, "\t\t\t\t</SegmentList>\n");
712  } else {
713  avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
714  avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
715  for (i = start_index; i < os->nb_segments; i++) {
716  Segment *seg = os->segments[i];
717  avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
718  }
719  avio_printf(out, "\t\t\t\t</SegmentList>\n");
720  }
721  if (!c->lhls || final) {
722  write_hls_media_playlist(os, s, representation_id, final, NULL);
723  }
724 
725 }
726 
727 static char *xmlescape(const char *str) {
728  int outlen = strlen(str)*3/2 + 6;
729  char *out = av_realloc(NULL, outlen + 1);
730  int pos = 0;
731  if (!out)
732  return NULL;
733  for (; *str; str++) {
734  if (pos + 6 > outlen) {
735  char *tmp;
736  outlen = 2 * outlen + 6;
737  tmp = av_realloc(out, outlen + 1);
738  if (!tmp) {
739  av_free(out);
740  return NULL;
741  }
742  out = tmp;
743  }
744  if (*str == '&') {
745  memcpy(&out[pos], "&amp;", 5);
746  pos += 5;
747  } else if (*str == '<') {
748  memcpy(&out[pos], "&lt;", 4);
749  pos += 4;
750  } else if (*str == '>') {
751  memcpy(&out[pos], "&gt;", 4);
752  pos += 4;
753  } else if (*str == '\'') {
754  memcpy(&out[pos], "&apos;", 6);
755  pos += 6;
756  } else if (*str == '\"') {
757  memcpy(&out[pos], "&quot;", 6);
758  pos += 6;
759  } else {
760  out[pos++] = *str;
761  }
762  }
763  out[pos] = '\0';
764  return out;
765 }
766 
768 {
769  int seconds = time / AV_TIME_BASE;
770  int fractions = time % AV_TIME_BASE;
771  int minutes = seconds / 60;
772  int hours = minutes / 60;
773  seconds %= 60;
774  minutes %= 60;
775  avio_printf(out, "PT");
776  if (hours)
777  avio_printf(out, "%dH", hours);
778  if (hours || minutes)
779  avio_printf(out, "%dM", minutes);
780  avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
781 }
782 
783 static void format_date(char *buf, int size, int64_t time_us)
784 {
785  struct tm *ptm, tmbuf;
786  int64_t time_ms = time_us / 1000;
787  const time_t time_s = time_ms / 1000;
788  int millisec = time_ms - (time_s * 1000);
789  ptm = gmtime_r(&time_s, &tmbuf);
790  if (ptm) {
791  int len;
792  if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
793  buf[0] = '\0';
794  return;
795  }
796  len = strlen(buf);
797  snprintf(buf + len, size - len, ".%03dZ", millisec);
798  }
799 }
800 
802  int final)
803 {
804  DASHContext *c = s->priv_data;
805  AdaptationSet *as = &c->as[as_index];
806  AVDictionaryEntry *lang, *role;
807  int i;
808 
809  avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
810  as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
812  avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
814  avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
815  if (as->media_type == AVMEDIA_TYPE_VIDEO) {
816  avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
817  avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
818  }
819  lang = av_dict_get(as->metadata, "language", NULL, 0);
820  if (lang)
821  avio_printf(out, " lang=\"%s\"", lang->value);
822  avio_printf(out, ">\n");
823 
824  if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
825  avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
826  if (as->trick_idx >= 0)
827  avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
828  role = av_dict_get(as->metadata, "role", NULL, 0);
829  if (role)
830  avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
831  if (as->descriptor)
832  avio_printf(out, "\t\t\t%s\n", as->descriptor);
833  for (i = 0; i < s->nb_streams; i++) {
834  AVStream *st = s->streams[i];
835  OutputStream *os = &c->streams[i];
836  char bandwidth_str[64] = {'\0'};
837 
838  if (os->as_idx - 1 != as_index)
839  continue;
840 
841  if (os->bit_rate > 0)
842  snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
843  os->bit_rate);
844 
845  if (as->media_type == AVMEDIA_TYPE_VIDEO) {
846  avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
847  i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
849  avio_printf(out, " scanType=\"unknown\"");
850  else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
851  avio_printf(out, " scanType=\"interlaced\"");
852  avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
853  if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
854  avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
855  if (as->trick_idx >= 0) {
856  AdaptationSet *tas = &c->as[as->trick_idx];
857  if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
858  avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
859  }
860  if (!os->coding_dependency)
861  avio_printf(out, " codingDependency=\"false\"");
862  avio_printf(out, ">\n");
863  } else {
864  avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
865  i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
866  avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
867  s->streams[i]->codecpar->channels);
868  }
869  if (!final && c->write_prft && os->producer_reference_time_str[0]) {
870  avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
871  i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
872  avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
873  avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
874  }
875  if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
877  avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
878  output_segment_list(os, out, s, i, final);
879  avio_printf(out, "\t\t\t</Representation>\n");
880  }
881  avio_printf(out, "\t\t</AdaptationSet>\n");
882 
883  return 0;
884 }
885 
887 {
888  DASHContext *c = s->priv_data;
889  void *mem;
890 
891  if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
892  av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
893  return AVERROR(EINVAL);
894  }
895  mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
896  if (!mem)
897  return AVERROR(ENOMEM);
898  c->as = mem;
899  ++c->nb_as;
900 
901  *as = &c->as[c->nb_as - 1];
902  memset(*as, 0, sizeof(**as));
903  (*as)->media_type = type;
904  (*as)->frag_type = -1;
905  (*as)->trick_idx = -1;
906 
907  return 0;
908 }
909 
910 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
911 {
912  DASHContext *c = s->priv_data;
913  AdaptationSet *as = &c->as[as_idx - 1];
914  OutputStream *os = &c->streams[i];
915 
916  if (as->media_type != s->streams[i]->codecpar->codec_type) {
917  av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
918  return AVERROR(EINVAL);
919  } else if (os->as_idx) {
920  av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
921  return AVERROR(EINVAL);
922  }
923  if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
924  av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
925  return AVERROR(EINVAL);
926  }
927  os->as_idx = as_idx;
928  ++as->nb_streams;
929 
930  return 0;
931 }
932 
934 {
935  DASHContext *c = s->priv_data;
936  const char *p = c->adaptation_sets;
937  enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
938  AdaptationSet *as;
939  int i, n, ret;
940 
941  // default: one AdaptationSet for each stream
942  if (!p) {
943  for (i = 0; i < s->nb_streams; i++) {
944  if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
945  return ret;
946  as->id = i;
947 
948  c->streams[i].as_idx = c->nb_as;
949  ++as->nb_streams;
950  }
951  goto end;
952  }
953 
954  // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
955  // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
956  // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
957  // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
958  // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
959  // descriptor_str should be a self-closing xml tag.
960  // seg_duration and frag_duration have the same syntax as the global options of
961  // the same name, and the former have precedence over them if set.
962  state = new_set;
963  while (*p) {
964  if (*p == ' ') {
965  p++;
966  continue;
967  } else if (state == new_set && av_strstart(p, "id=", &p)) {
968  char id_str[10], *end_str;
969 
970  n = strcspn(p, ",");
971  snprintf(id_str, sizeof(id_str), "%.*s", n, p);
972 
973  i = strtol(id_str, &end_str, 10);
974  if (id_str == end_str || i < 0 || i > c->nb_as) {
975  av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
976  return AVERROR(EINVAL);
977  }
978 
979  if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
980  return ret;
981  as->id = i;
982 
983  p += n;
984  if (*p)
985  p++;
986  state = parse_default;
987  } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
988  state = parse_seg_duration;
989  } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
990  state = parse_frag_duration;
991  } else if (state == parse_seg_duration || state == parse_frag_duration) {
992  char str[32];
993  int64_t usecs = 0;
994 
995  n = strcspn(p, ",");
996  snprintf(str, sizeof(str), "%.*s", n, p);
997  p += n;
998  if (*p)
999  p++;
1000 
1001  ret = av_parse_time(&usecs, str, 1);
1002  if (ret < 0) {
1003  av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1004  return ret;
1005  }
1006 
1007  if (state == parse_seg_duration)
1008  as->seg_duration = usecs;
1009  else
1010  as->frag_duration = usecs;
1011  state = parse_default;
1012  } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1013  char type_str[16];
1014 
1015  n = strcspn(p, ",");
1016  snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1017  p += n;
1018  if (*p)
1019  p++;
1020 
1021  if (!strcmp(type_str, "duration"))
1023  else if (!strcmp(type_str, "pframes"))
1025  else if (!strcmp(type_str, "every_frame"))
1027  else if (!strcmp(type_str, "none"))
1028  as->frag_type = FRAG_TYPE_NONE;
1029  else {
1030  av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1031  return ret;
1032  }
1033  state = parse_default;
1034  } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1035  n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1036  if (n < strlen(p)) {
1037  as->descriptor = av_strndup(p, n);
1038  } else {
1039  av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1040  return AVERROR(EINVAL);
1041  }
1042  p += n;
1043  if (*p)
1044  p++;
1045  state = parse_default;
1046  } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1047  char trick_id_str[10], *end_str;
1048 
1049  n = strcspn(p, ",");
1050  snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1051  p += n;
1052 
1053  as->trick_idx = strtol(trick_id_str, &end_str, 10);
1054  if (trick_id_str == end_str || as->trick_idx < 0)
1055  return AVERROR(EINVAL);
1056 
1057  if (*p)
1058  p++;
1059  state = parse_default;
1060  } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1061  state = parsing_streams;
1062  } else if (state == parsing_streams) {
1063  AdaptationSet *as = &c->as[c->nb_as - 1];
1064  char idx_str[8], *end_str;
1065 
1066  n = strcspn(p, " ,");
1067  snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1068  p += n;
1069 
1070  // if value is "a" or "v", map all streams of that type
1071  if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1072  enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1073  av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1074 
1075  for (i = 0; i < s->nb_streams; i++) {
1076  if (s->streams[i]->codecpar->codec_type != type)
1077  continue;
1078 
1079  as->media_type = s->streams[i]->codecpar->codec_type;
1080 
1081  if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1082  return ret;
1083  }
1084  } else { // select single stream
1085  i = strtol(idx_str, &end_str, 10);
1086  if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1087  av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1088  return AVERROR(EINVAL);
1089  }
1090  av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1091 
1092  if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1093  as->media_type = s->streams[i]->codecpar->codec_type;
1094  }
1095 
1096  if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1097  return ret;
1098  }
1099 
1100  if (*p == ' ')
1101  state = new_set;
1102  if (*p)
1103  p++;
1104  } else {
1105  return AVERROR(EINVAL);
1106  }
1107  }
1108 
1109 end:
1110  // check for unassigned streams
1111  for (i = 0; i < s->nb_streams; i++) {
1112  OutputStream *os = &c->streams[i];
1113  if (!os->as_idx) {
1114  av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1115  return AVERROR(EINVAL);
1116  }
1117  }
1118 
1119  // check references for trick mode AdaptationSet
1120  for (i = 0; i < c->nb_as; i++) {
1121  as = &c->as[i];
1122  if (as->trick_idx < 0)
1123  continue;
1124  for (n = 0; n < c->nb_as; n++) {
1125  if (c->as[n].id == as->trick_idx)
1126  break;
1127  }
1128  if (n >= c->nb_as) {
1129  av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1130  return AVERROR(EINVAL);
1131  }
1132  }
1133 
1134  return 0;
1135 }
1136 
1137 static int write_manifest(AVFormatContext *s, int final)
1138 {
1139  DASHContext *c = s->priv_data;
1140  AVIOContext *out;
1141  char temp_filename[1024];
1142  int ret, i;
1143  const char *proto = avio_find_protocol_name(s->url);
1144  int use_rename = proto && !strcmp(proto, "file");
1145  static unsigned int warned_non_file = 0;
1146  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1147  AVDictionary *opts = NULL;
1148 
1149  if (!use_rename && !warned_non_file++)
1150  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1151 
1152  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1153  set_http_options(&opts, c);
1154  ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1155  av_dict_free(&opts);
1156  if (ret < 0) {
1157  return handle_io_open_error(s, ret, temp_filename);
1158  }
1159  out = c->mpd_out;
1160  avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1161  avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1162  "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1163  "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1164  "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1165  "\tprofiles=\"");
1166  if (c->profile & MPD_PROFILE_DASH)
1167  avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1168  if (c->profile & MPD_PROFILE_DVB)
1169  avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1170  avio_printf(out, "\ttype=\"%s\"\n",
1171  final ? "static" : "dynamic");
1172  if (final) {
1173  avio_printf(out, "\tmediaPresentationDuration=\"");
1174  write_time(out, c->total_duration);
1175  avio_printf(out, "\"\n");
1176  } else {
1177  int64_t update_period = c->last_duration / AV_TIME_BASE;
1178  char now_str[100];
1179  if (c->use_template && !c->use_timeline)
1180  update_period = 500;
1181  avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1182  if (!c->ldash)
1183  avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1184  if (c->availability_start_time[0])
1185  avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1186  format_date(now_str, sizeof(now_str), av_gettime());
1187  if (now_str[0])
1188  avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1189  if (c->window_size && c->use_template) {
1190  avio_printf(out, "\ttimeShiftBufferDepth=\"");
1191  write_time(out, c->last_duration * c->window_size);
1192  avio_printf(out, "\"\n");
1193  }
1194  }
1195  avio_printf(out, "\tmaxSegmentDuration=\"");
1197  avio_printf(out, "\"\n");
1198  avio_printf(out, "\tminBufferTime=\"");
1199  write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1200  avio_printf(out, "\">\n");
1201  avio_printf(out, "\t<ProgramInformation>\n");
1202  if (title) {
1203  char *escaped = xmlescape(title->value);
1204  avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1205  av_free(escaped);
1206  }
1207  avio_printf(out, "\t</ProgramInformation>\n");
1208 
1209  avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1210  if (!final && c->target_latency && c->target_latency_refid >= 0) {
1211  avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1212  if (s->nb_streams > 1)
1213  avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1214  avio_printf(out, "/>\n");
1215  }
1216  if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1217  av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1218  avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1220  avio_printf(out, "\t</ServiceDescription>\n");
1221 
1222  if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1223  OutputStream *os = &c->streams[0];
1224  int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1226  avio_printf(out, "\t<Period id=\"0\" start=\"");
1227  write_time(out, start_time);
1228  avio_printf(out, "\">\n");
1229  } else {
1230  avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1231  }
1232 
1233  for (i = 0; i < c->nb_as; i++) {
1234  if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1235  return ret;
1236  }
1237  avio_printf(out, "\t</Period>\n");
1238 
1239  if (c->utc_timing_url)
1240  avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1241 
1242  avio_printf(out, "</MPD>\n");
1243  avio_flush(out);
1244  dashenc_io_close(s, &c->mpd_out, temp_filename);
1245 
1246  if (use_rename) {
1247  if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1248  return ret;
1249  }
1250 
1251  if (c->hls_playlist) {
1252  char filename_hls[1024];
1253  const char *audio_group = "A1";
1254  char audio_codec_str[128] = "\0";
1255  int is_default = 1;
1256  int max_audio_bitrate = 0;
1257 
1258  // Publish master playlist only the configured rate
1261  return 0;
1262 
1263  if (*c->dirname)
1264  snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1265  else
1266  snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1267 
1268  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1269 
1270  set_http_options(&opts, c);
1271  ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1272  av_dict_free(&opts);
1273  if (ret < 0) {
1274  return handle_io_open_error(s, ret, temp_filename);
1275  }
1276 
1278 
1279  for (i = 0; i < s->nb_streams; i++) {
1280  char playlist_file[64];
1281  AVStream *st = s->streams[i];
1282  OutputStream *os = &c->streams[i];
1284  continue;
1285  if (os->segment_type != SEGMENT_TYPE_MP4)
1286  continue;
1287  get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1288  ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1289  playlist_file, NULL, i, is_default);
1290  max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1291  os->muxer_overhead, max_audio_bitrate);
1292  if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1293  if (strlen(audio_codec_str))
1294  av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1295  av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1296  }
1297  is_default = 0;
1298  }
1299 
1300  for (i = 0; i < s->nb_streams; i++) {
1301  char playlist_file[64];
1302  char codec_str[128];
1303  AVStream *st = s->streams[i];
1304  OutputStream *os = &c->streams[i];
1305  char *agroup = NULL;
1306  char *codec_str_ptr = NULL;
1307  int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1309  continue;
1310  if (os->segment_type != SEGMENT_TYPE_MP4)
1311  continue;
1312  av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1313  if (max_audio_bitrate) {
1314  agroup = (char *)audio_group;
1315  stream_bitrate += max_audio_bitrate;
1316  av_strlcat(codec_str, ",", sizeof(codec_str));
1317  av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1318  }
1319  if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1320  codec_str_ptr = codec_str;
1321  }
1322  get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1323  ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1324  playlist_file, agroup,
1325  codec_str_ptr, NULL, NULL);
1326  }
1327  dashenc_io_close(s, &c->m3u8_out, temp_filename);
1328  if (use_rename)
1329  if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1330  return ret;
1331  c->master_playlist_created = 1;
1332  }
1333 
1334  return 0;
1335 }
1336 
1337 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1338 {
1339  AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1340  if (entry)
1341  av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1342  return 0;
1343 }
1344 
1346 {
1347  DASHContext *c = s->priv_data;
1348  int ret = 0, i;
1349  char *ptr;
1350  char basename[1024];
1351 
1352  c->nr_of_streams_to_flush = 0;
1353  if (c->single_file_name)
1354  c->single_file = 1;
1355  if (c->single_file)
1356  c->use_template = 0;
1357 
1358  if (!c->profile) {
1359  av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1360  return AVERROR(EINVAL);
1361  }
1362 #if FF_API_DASH_MIN_SEG_DURATION
1363  if (c->min_seg_duration != 5000000) {
1364  av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1365  c->seg_duration = c->min_seg_duration;
1366  }
1367 #endif
1369  av_log(s, AV_LOG_ERROR,
1370  "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1371  return AVERROR_EXPERIMENTAL;
1372  }
1373 
1374  if (c->lhls && !c->streaming) {
1375  av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1376  c->lhls = 0;
1377  }
1378 
1379  if (c->lhls && !c->hls_playlist) {
1380  av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1381  c->lhls = 0;
1382  }
1383 
1384  if (c->ldash && !c->streaming) {
1385  av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1386  c->ldash = 0;
1387  }
1388 
1389  if (c->target_latency && !c->streaming) {
1390  av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1391  c->target_latency = 0;
1392  }
1393 
1394  if (c->global_sidx && !c->single_file) {
1395  av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1396  c->global_sidx = 0;
1397  }
1398 
1399  if (c->global_sidx && c->streaming) {
1400  av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1401  c->global_sidx = 0;
1402  }
1403  if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1404  av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1406  }
1407 
1408  if (c->write_prft < 0) {
1409  c->write_prft = c->ldash;
1410  if (c->ldash)
1411  av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1412  }
1413 
1414  if (c->write_prft && !c->utc_timing_url) {
1415  av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1416  c->write_prft = 0;
1417  }
1418 
1419  if (c->write_prft && !c->streaming) {
1420  av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1421  c->write_prft = 0;
1422  }
1423 
1424  if (c->ldash && !c->write_prft) {
1425  av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1426  }
1427 
1428  if (c->target_latency && !c->write_prft) {
1429  av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1430  c->target_latency = 0;
1431  }
1432 
1433  if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1434  av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higer than the Maximum. Both will be ignored\n");
1435  c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1436  }
1437 
1438  av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1439  ptr = strrchr(c->dirname, '/');
1440  if (ptr) {
1441  av_strlcpy(basename, &ptr[1], sizeof(basename));
1442  ptr[1] = '\0';
1443  } else {
1444  c->dirname[0] = '\0';
1445  av_strlcpy(basename, s->url, sizeof(basename));
1446  }
1447 
1448  ptr = strrchr(basename, '.');
1449  if (ptr)
1450  *ptr = '\0';
1451 
1452  c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1453  if (!c->streams)
1454  return AVERROR(ENOMEM);
1455 
1456  if ((ret = parse_adaptation_sets(s)) < 0)
1457  return ret;
1458 
1459  if ((ret = init_segment_types(s)) < 0)
1460  return ret;
1461 
1462  for (i = 0; i < s->nb_streams; i++) {
1463  OutputStream *os = &c->streams[i];
1464  AdaptationSet *as = &c->as[os->as_idx - 1];
1466  AVStream *st;
1467  AVDictionary *opts = NULL;
1468  char filename[1024];
1469 
1470  os->bit_rate = s->streams[i]->codecpar->bit_rate;
1471  if (!os->bit_rate) {
1474  av_log(s, level, "No bit rate set for stream %d\n", i);
1476  return AVERROR(EINVAL);
1477  }
1478 
1479  // copy AdaptationSet language and role from stream metadata
1480  dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1481  dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1482 
1483  if (c->init_seg_name) {
1484  os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1485  if (!os->init_seg_name)
1486  return AVERROR(ENOMEM);
1487  }
1488  if (c->media_seg_name) {
1490  if (!os->media_seg_name)
1491  return AVERROR(ENOMEM);
1492  }
1493  if (c->single_file_name) {
1495  if (!os->single_file_name)
1496  return AVERROR(ENOMEM);
1497  }
1498 
1499  if (os->segment_type == SEGMENT_TYPE_WEBM) {
1500  if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1501  (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1504  "One or many segment file names doesn't end with .webm. "
1505  "Override -init_seg_name and/or -media_seg_name and/or "
1506  "-single_file_name to end with the extension .webm\n");
1507  }
1508  if (c->streaming) {
1509  // Streaming not supported as matroskaenc buffers internally before writing the output
1510  av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1511  c->streaming = 0;
1512  }
1513  }
1514 
1515  os->ctx = ctx = avformat_alloc_context();
1516  if (!ctx)
1517  return AVERROR(ENOMEM);
1518 
1520  if (!ctx->oformat)
1521  return AVERROR_MUXER_NOT_FOUND;
1523  ctx->opaque = s->opaque;
1524  ctx->io_close = s->io_close;
1525  ctx->io_open = s->io_open;
1527 
1528  if (!(st = avformat_new_stream(ctx, NULL)))
1529  return AVERROR(ENOMEM);
1532  st->time_base = s->streams[i]->time_base;
1535  ctx->flags = s->flags;
1536 
1537  os->parser = av_parser_init(st->codecpar->codec_id);
1538  if (os->parser) {
1540  if (!os->parser_avctx)
1541  return AVERROR(ENOMEM);
1543  if (ret < 0)
1544  return ret;
1545  // We only want to parse frame headers
1547  }
1548 
1549  if (c->single_file) {
1550  if (os->single_file_name)
1551  ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1552  else
1553  snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1554  } else {
1555  ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1556  }
1557  snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1558  set_http_options(&opts, c);
1559  if (!c->single_file) {
1560  if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1561  return ret;
1562  ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1563  } else {
1564  ctx->url = av_strdup(filename);
1565  ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1566  }
1567  av_dict_free(&opts);
1568  if (ret < 0)
1569  return ret;
1570  os->init_start_pos = 0;
1571 
1572  av_dict_copy(&opts, c->format_options, 0);
1573  if (!as->seg_duration)
1574  as->seg_duration = c->seg_duration;
1575  if (!as->frag_duration)
1576  as->frag_duration = c->frag_duration;
1577  if (as->frag_type < 0)
1578  as->frag_type = c->frag_type;
1579  os->seg_duration = as->seg_duration;
1580  os->frag_duration = as->frag_duration;
1581  os->frag_type = as->frag_type;
1582 
1584 
1585  if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1586  av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1587  return AVERROR(EINVAL);
1588  }
1589 
1590  if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1591  av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1593  }
1594  if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1595  av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1596  return AVERROR(EINVAL);
1597  }
1598  if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1599  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1600  av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1602  }
1603  if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1604  // Set this now if a parser isn't used
1605  os->coding_dependency = 1;
1606 
1607  if (os->segment_type == SEGMENT_TYPE_MP4) {
1608  if (c->streaming)
1609  // skip_sidx : Reduce bitrate overhead
1610  // skip_trailer : Avoids growing memory usage with time
1611  av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1612  else {
1613  if (c->global_sidx)
1614  av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1615  else
1616  av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1617  }
1618  if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1619  av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1620  else
1621  av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1622  if (os->frag_type == FRAG_TYPE_DURATION)
1623  av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1624  if (c->write_prft)
1625  av_dict_set(&opts, "write_prft", "wallclock", 0);
1626  } else {
1627  av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1628  av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1629  av_dict_set_int(&opts, "dash", 1, 0);
1630  av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1631  av_dict_set_int(&opts, "live", 1, 0);
1632  }
1633  ret = avformat_init_output(ctx, &opts);
1634  av_dict_free(&opts);
1635  if (ret < 0)
1636  return ret;
1637  os->ctx_inited = 1;
1638  avio_flush(ctx->pb);
1639 
1640  av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1641 
1642  s->streams[i]->time_base = st->time_base;
1643  // If the muxer wants to shift timestamps, request to have them shifted
1644  // already before being handed to this muxer, so we don't have mismatches
1645  // between the MPD and the actual segments.
1647  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1648  AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1649  AVRational par;
1650  if (avg_frame_rate.num > 0) {
1651  if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1652  as->min_frame_rate = avg_frame_rate;
1653  if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1654  as->max_frame_rate = avg_frame_rate;
1655  } else {
1656  as->ambiguous_frame_rate = 1;
1657  }
1658 
1659  if (st->codecpar->width > as->max_width)
1660  as->max_width = st->codecpar->width;
1661  if (st->codecpar->height > as->max_height)
1662  as->max_height = st->codecpar->height;
1663 
1664  if (st->sample_aspect_ratio.num)
1665  os->sar = st->sample_aspect_ratio;
1666  else
1667  os->sar = (AVRational){1,1};
1668  av_reduce(&par.num, &par.den,
1669  st->codecpar->width * (int64_t)os->sar.num,
1670  st->codecpar->height * (int64_t)os->sar.den,
1671  1024 * 1024);
1672 
1673  if (as->par.num && av_cmp_q(par, as->par)) {
1674  av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1675  return AVERROR(EINVAL);
1676  }
1677  as->par = par;
1678 
1679  c->has_video = 1;
1680  }
1681 
1682  set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1683  sizeof(os->codec_str));
1684  os->first_pts = AV_NOPTS_VALUE;
1685  os->max_pts = AV_NOPTS_VALUE;
1686  os->last_dts = AV_NOPTS_VALUE;
1687  os->segment_index = 1;
1688 
1691  }
1692 
1693  if (!c->has_video && c->seg_duration <= 0) {
1694  av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1695  return AVERROR(EINVAL);
1696  }
1697  if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1698  av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1699 
1700  c->nr_of_streams_flushed = 0;
1701  c->target_latency_refid = -1;
1702 
1703  return 0;
1704 }
1705 
1707 {
1708  DASHContext *c = s->priv_data;
1709  int i, ret;
1710  for (i = 0; i < s->nb_streams; i++) {
1711  OutputStream *os = &c->streams[i];
1712  if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1713  return ret;
1714 
1715  // Flush init segment
1716  // Only for WebM segment, since for mp4 delay_moov is set and
1717  // the init segment is thus flushed after the first packets.
1718  if (os->segment_type == SEGMENT_TYPE_WEBM &&
1719  (ret = flush_init_segment(s, os)) < 0)
1720  return ret;
1721  }
1722  return ret;
1723 }
1724 
1725 static int add_segment(OutputStream *os, const char *file,
1728  int64_t index_length, int next_exp_index)
1729 {
1730  int err;
1731  Segment *seg;
1732  if (os->nb_segments >= os->segments_size) {
1733  os->segments_size = (os->segments_size + 1) * 2;
1734  if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1735  os->segments_size)) < 0) {
1736  os->segments_size = 0;
1737  os->nb_segments = 0;
1738  return err;
1739  }
1740  }
1741  seg = av_mallocz(sizeof(*seg));
1742  if (!seg)
1743  return AVERROR(ENOMEM);
1744  av_strlcpy(seg->file, file, sizeof(seg->file));
1745  seg->time = time;
1746  seg->duration = duration;
1747  if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1748  seg->duration += seg->time;
1749  seg->time = 0;
1750  }
1751  seg->start_pos = start_pos;
1752  seg->range_length = range_length;
1753  seg->index_length = index_length;
1754  os->segments[os->nb_segments++] = seg;
1755  os->segment_index++;
1756  //correcting the segment index if it has fallen behind the expected value
1757  if (os->segment_index < next_exp_index) {
1758  av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1759  file, os->segment_index, next_exp_index);
1760  os->segment_index = next_exp_index;
1761  }
1762  return 0;
1763 }
1764 
1765 static void write_styp(AVIOContext *pb)
1766 {
1767  avio_wb32(pb, 24);
1768  ffio_wfourcc(pb, "styp");
1769  ffio_wfourcc(pb, "msdh");
1770  avio_wb32(pb, 0); /* minor */
1771  ffio_wfourcc(pb, "msdh");
1772  ffio_wfourcc(pb, "msix");
1773 }
1774 
1775 static void find_index_range(AVFormatContext *s, const char *full_path,
1776  int64_t pos, int *index_length)
1777 {
1778  uint8_t buf[8];
1779  AVIOContext *pb;
1780  int ret;
1781 
1782  ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1783  if (ret < 0)
1784  return;
1785  if (avio_seek(pb, pos, SEEK_SET) != pos) {
1786  ff_format_io_close(s, &pb);
1787  return;
1788  }
1789  ret = avio_read(pb, buf, 8);
1790  ff_format_io_close(s, &pb);
1791  if (ret < 8)
1792  return;
1793  if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1794  return;
1795  *index_length = AV_RB32(&buf[0]);
1796 }
1797 
1799  AVPacket *pkt, AVRational *frame_rate)
1800 {
1801  AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1802  uint8_t *extradata;
1803  int ret, extradata_size;
1804 
1805  if (par->extradata_size)
1806  return 0;
1807 
1808  extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1809  if (!extradata_size)
1810  return 0;
1811 
1812  ret = ff_alloc_extradata(par, extradata_size);
1813  if (ret < 0)
1814  return ret;
1815 
1816  memcpy(par->extradata, extradata, extradata_size);
1817 
1818  set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1819 
1820  return 0;
1821 }
1822 
1823 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1824  DASHContext *c = s->priv_data;
1825  int http_base_proto = ff_is_http_proto(filename);
1826 
1827  if (http_base_proto) {
1828  AVIOContext *out = NULL;
1829  AVDictionary *http_opts = NULL;
1830 
1831  set_http_options(&http_opts, c);
1832  av_dict_set(&http_opts, "method", "DELETE", 0);
1833 
1834  if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1835  av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1836  }
1837 
1838  av_dict_free(&http_opts);
1839  ff_format_io_close(s, &out);
1840  } else {
1841  int res = avpriv_io_delete(filename);
1842  if (res < 0) {
1843  char errbuf[AV_ERROR_MAX_STRING_SIZE];
1844  av_strerror(res, errbuf, sizeof(errbuf));
1845  av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1846  }
1847  }
1848 }
1849 
1851 {
1852  DASHContext *c = s->priv_data;
1853  AVBPrint buf;
1854 
1856 
1857  av_bprintf(&buf, "%s%s", c->dirname, file);
1858  if (!av_bprint_is_complete(&buf)) {
1859  av_bprint_finalize(&buf, NULL);
1860  av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1861  return AVERROR(ENOMEM);
1862  }
1863 
1864  dashenc_delete_file(s, buf.str);
1865 
1866  av_bprint_finalize(&buf, NULL);
1867  return 0;
1868 }
1869 
1870 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1871 {
1872  for (int i = 0; i < remove_count; ++i) {
1874 
1875  // Delete the segment regardless of whether the file was successfully deleted
1876  av_free(os->segments[i]);
1877  }
1878 
1879  os->nb_segments -= remove_count;
1880  memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1881 }
1882 
1883 static int dash_flush(AVFormatContext *s, int final, int stream)
1884 {
1885  DASHContext *c = s->priv_data;
1886  int i, ret = 0;
1887 
1888  const char *proto = avio_find_protocol_name(s->url);
1889  int use_rename = proto && !strcmp(proto, "file");
1890 
1891  int cur_flush_segment_index = 0, next_exp_index = -1;
1892  if (stream >= 0) {
1893  cur_flush_segment_index = c->streams[stream].segment_index;
1894 
1895  //finding the next segment's expected index, based on the current pts value
1896  if (c->use_template && !c->use_timeline && c->index_correction &&
1897  c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1898  c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1899  int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1900  c->streams[stream].first_pts,
1901  s->streams[stream]->time_base,
1902  AV_TIME_BASE_Q);
1903  next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1904  }
1905  }
1906 
1907  for (i = 0; i < s->nb_streams; i++) {
1908  OutputStream *os = &c->streams[i];
1909  AVStream *st = s->streams[i];
1910  int range_length, index_length = 0;
1911  int64_t duration;
1912 
1913  if (!os->packets_written)
1914  continue;
1915 
1916  // Flush the single stream that got a keyframe right now.
1917  // Flush all audio streams as well, in sync with video keyframes,
1918  // but not the other video streams.
1919  if (stream >= 0 && i != stream) {
1920  if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1922  continue;
1924  continue;
1925  // Make sure we don't flush audio streams multiple times, when
1926  // all video streams are flushed one at a time.
1927  if (c->has_video && os->segment_index > cur_flush_segment_index)
1928  continue;
1929  }
1930 
1931  if (c->single_file)
1932  snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1933 
1934  ret = flush_dynbuf(c, os, &range_length);
1935  if (ret < 0)
1936  break;
1937  os->packets_written = 0;
1938 
1939  if (c->single_file) {
1940  find_index_range(s, os->full_path, os->pos, &index_length);
1941  } else {
1942  dashenc_io_close(s, &os->out, os->temp_path);
1943 
1944  if (use_rename) {
1945  ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1946  if (ret < 0)
1947  break;
1948  }
1949  }
1950 
1951  duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1952  os->last_duration = FFMAX(os->last_duration, duration);
1953 
1954  if (!os->muxer_overhead && os->max_pts > os->start_pts)
1955  os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1956  8 * AV_TIME_BASE) / duration;
1957  os->total_pkt_size = 0;
1958  os->total_pkt_duration = 0;
1959 
1960  if (!os->bit_rate) {
1961  // calculate average bitrate of first segment
1962  int64_t bitrate = (int64_t) range_length * 8 * (c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE) / duration;
1963  if (bitrate >= 0)
1964  os->bit_rate = bitrate;
1965  }
1966  add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1967  av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1968 
1969  os->pos += range_length;
1970  }
1971 
1972  if (c->window_size) {
1973  for (i = 0; i < s->nb_streams; i++) {
1974  OutputStream *os = &c->streams[i];
1975  int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1976  if (remove_count > 0)
1977  dashenc_delete_media_segments(s, os, remove_count);
1978  }
1979  }
1980 
1981  if (final) {
1982  for (i = 0; i < s->nb_streams; i++) {
1983  OutputStream *os = &c->streams[i];
1984  if (os->ctx && os->ctx_inited) {
1985  int64_t file_size = avio_tell(os->ctx->pb);
1986  av_write_trailer(os->ctx);
1987  if (c->global_sidx) {
1988  int j, start_index, start_number;
1989  int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1990  get_start_index_number(os, c, &start_index, &start_number);
1991  if (start_index >= os->nb_segments ||
1993  continue;
1994  os->init_range_length += sidx_size;
1995  for (j = start_index; j < os->nb_segments; j++) {
1996  Segment *seg = os->segments[j];
1997  seg->start_pos += sidx_size;
1998  }
1999  }
2000 
2001  }
2002  }
2003  }
2004  if (ret >= 0) {
2005  if (c->has_video && !final) {
2006  c->nr_of_streams_flushed++;
2008  return ret;
2009 
2010  c->nr_of_streams_flushed = 0;
2011  }
2012  ret = write_manifest(s, final);
2013  }
2014  return ret;
2015 }
2016 
2018 {
2019  OutputStream *os = &c->streams[pkt->stream_index];
2021  int side_data_size;
2022 
2023  prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
2024  if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2025  // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2026  // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2028  sizeof(AVProducerReferenceTime));
2029  if (!prft)
2030  return AVERROR(ENOMEM);
2031  prft->wallclock = av_gettime();
2032  prft->flags = 24;
2033  }
2034  if (os->first_pts == AV_NOPTS_VALUE) {
2035  os->producer_reference_time = *prft;
2036  if (c->target_latency_refid < 0)
2038  }
2039 
2040  return 0;
2041 }
2042 
2044 {
2045  DASHContext *c = s->priv_data;
2046  AVStream *st = s->streams[pkt->stream_index];
2047  OutputStream *os = &c->streams[pkt->stream_index];
2048  AdaptationSet *as = &c->as[os->as_idx - 1];
2049  int64_t seg_end_duration, elapsed_duration;
2050  int ret;
2051 
2052  ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2053  if (ret < 0)
2054  return ret;
2055 
2056  // Fill in a heuristic guess of the packet duration, if none is available.
2057  // The mp4 muxer will do something similar (for the last packet in a fragment)
2058  // if nothing is set (setting it for the other packets doesn't hurt).
2059  // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2060  // invoke its heuristic (this doesn't have to be identical to that algorithm),
2061  // so that we know the exact timestamps of fragments.
2062  if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2063  pkt->duration = pkt->dts - os->last_dts;
2064  os->last_dts = pkt->dts;
2065 
2066  // If forcing the stream to start at 0, the mp4 muxer will set the start
2067  // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2068  if (os->first_pts == AV_NOPTS_VALUE &&
2070  pkt->pts -= pkt->dts;
2071  pkt->dts = 0;
2072  }
2073 
2074  if (c->write_prft) {
2075  ret = dash_parse_prft(c, pkt);
2076  if (ret < 0)
2077  return ret;
2078  }
2079 
2080  if (os->first_pts == AV_NOPTS_VALUE) {
2081  os->first_pts = pkt->pts;
2082  }
2083  os->last_pts = pkt->pts;
2084 
2085  if (!c->availability_start_time[0]) {
2086  int64_t start_time_us = av_gettime();
2087  c->start_time_s = start_time_us / 1000000;
2089  sizeof(c->availability_start_time), start_time_us);
2090  }
2091 
2092  if (!os->packets_written)
2093  os->availability_time_offset = 0;
2094 
2095  if (!os->availability_time_offset &&
2096  ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2097  (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2098  AdaptationSet *as = &c->as[os->as_idx - 1];
2099  int64_t frame_duration = 0;
2100 
2101  switch (os->frag_type) {
2102  case FRAG_TYPE_DURATION:
2103  frame_duration = os->frag_duration;
2104  break;
2105  case FRAG_TYPE_EVERY_FRAME:
2106  frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2107  break;
2108  }
2109 
2110  os->availability_time_offset = ((double) os->seg_duration -
2111  frame_duration) / AV_TIME_BASE;
2112  as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2113  }
2114 
2115  if (c->use_template && !c->use_timeline) {
2116  elapsed_duration = pkt->pts - os->first_pts;
2117  seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2118  } else {
2119  elapsed_duration = pkt->pts - os->start_pts;
2120  seg_end_duration = os->seg_duration;
2121  }
2122 
2123  if (os->parser &&
2124  (os->frag_type == FRAG_TYPE_PFRAMES ||
2125  as->trick_idx >= 0)) {
2126  // Parse the packets only in scenarios where it's needed
2127  uint8_t *data;
2128  int size;
2130  &data, &size, pkt->data, pkt->size,
2131  pkt->pts, pkt->dts, pkt->pos);
2132 
2134  }
2135 
2136  if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2137  av_compare_ts(elapsed_duration, st->time_base,
2138  seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2139  if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2140  c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2141  st->time_base,
2142  AV_TIME_BASE_Q);
2143  c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2144  st->time_base,
2145  AV_TIME_BASE_Q);
2146 
2147  if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2148  if (c->last_duration < os->last_duration*9/10 ||
2149  c->last_duration > os->last_duration*11/10) {
2151  "Segment durations differ too much, enable use_timeline "
2152  "and use_template, or keep a stricter keyframe interval\n");
2153  }
2154  }
2155  }
2156 
2159  sizeof(os->producer_reference_time_str),
2161 
2162  if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2163  return ret;
2164  }
2165 
2166  if (!os->packets_written) {
2167  // If we wrote a previous segment, adjust the start time of the segment
2168  // to the end of the previous one (which is the same as the mp4 muxer
2169  // does). This avoids gaps in the timeline.
2170  if (os->max_pts != AV_NOPTS_VALUE)
2171  os->start_pts = os->max_pts;
2172  else
2173  os->start_pts = pkt->pts;
2174  }
2175  if (os->max_pts == AV_NOPTS_VALUE)
2176  os->max_pts = pkt->pts + pkt->duration;
2177  else
2178  os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2179 
2180  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2181  os->frag_type == FRAG_TYPE_PFRAMES &&
2182  os->packets_written) {
2183  av_assert0(os->parser);
2184  if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2185  st->codecpar->video_delay &&
2186  !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2187  pkt->flags & AV_PKT_FLAG_KEY) {
2188  ret = av_write_frame(os->ctx, NULL);
2189  if (ret < 0)
2190  return ret;
2191 
2192  if (!os->availability_time_offset) {
2193  int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2194  AV_TIME_BASE_Q);
2195  os->availability_time_offset = ((double) os->seg_duration -
2196  frag_duration) / AV_TIME_BASE;
2197  as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2198  }
2199  }
2200  }
2201 
2202  if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2204  c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2205  }
2206 
2207  if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2208  return ret;
2209 
2210  os->packets_written++;
2211  os->total_pkt_size += pkt->size;
2212  os->total_pkt_duration += pkt->duration;
2213  os->last_flags = pkt->flags;
2214 
2215  if (!os->init_range_length)
2216  flush_init_segment(s, os);
2217 
2218  //open the output context when the first frame of a segment is ready
2219  if (!c->single_file && os->packets_written == 1) {
2220  AVDictionary *opts = NULL;
2221  const char *proto = avio_find_protocol_name(s->url);
2222  int use_rename = proto && !strcmp(proto, "file");
2223  if (os->segment_type == SEGMENT_TYPE_MP4)
2224  write_styp(os->ctx->pb);
2225  os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2226  ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2227  os->media_seg_name, pkt->stream_index,
2228  os->segment_index, os->bit_rate, os->start_pts);
2229  snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2230  os->filename);
2231  snprintf(os->temp_path, sizeof(os->temp_path),
2232  use_rename ? "%s.tmp" : "%s", os->full_path);
2233  set_http_options(&opts, c);
2234  ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2235  av_dict_free(&opts);
2236  if (ret < 0) {
2237  return handle_io_open_error(s, ret, os->temp_path);
2238  }
2239  if (c->lhls) {
2240  char *prefetch_url = use_rename ? NULL : os->filename;
2241  write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2242  }
2243  }
2244 
2245  //write out the data immediately in streaming mode
2246  if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2247  int len = 0;
2248  uint8_t *buf = NULL;
2249  avio_flush(os->ctx->pb);
2250  len = avio_get_dyn_buf (os->ctx->pb, &buf);
2251  if (os->out) {
2252  avio_write(os->out, buf + os->written_len, len - os->written_len);
2253  avio_flush(os->out);
2254  }
2255  os->written_len = len;
2256  }
2257 
2258  return ret;
2259 }
2260 
2262 {
2263  DASHContext *c = s->priv_data;
2264  int i;
2265 
2266  if (s->nb_streams > 0) {
2267  OutputStream *os = &c->streams[0];
2268  // If no segments have been written so far, try to do a crude
2269  // guess of the segment duration
2270  if (!c->last_duration)
2272  s->streams[0]->time_base,
2273  AV_TIME_BASE_Q);
2275  s->streams[0]->time_base,
2276  AV_TIME_BASE_Q);
2277  }
2278  dash_flush(s, 1, -1);
2279 
2280  if (c->remove_at_exit) {
2281  for (i = 0; i < s->nb_streams; ++i) {
2282  OutputStream *os = &c->streams[i];
2285  if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2286  char filename[1024];
2287  get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2288  dashenc_delete_file(s, filename);
2289  }
2290  }
2291  dashenc_delete_file(s, s->url);
2292 
2293  if (c->hls_playlist && c->master_playlist_created) {
2294  char filename[1024];
2295  snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2296  dashenc_delete_file(s, filename);
2297  }
2298  }
2299 
2300  return 0;
2301 }
2302 
2303 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2304 {
2305  DASHContext *c = s->priv_data;
2306  OutputStream *os = &c->streams[avpkt->stream_index];
2307  AVFormatContext *oc = os->ctx;
2308  if (oc->oformat->check_bitstream) {
2309  int ret;
2310  AVPacket pkt = *avpkt;
2311  pkt.stream_index = 0;
2312  ret = oc->oformat->check_bitstream(oc, &pkt);
2313  if (ret == 1) {
2314  AVStream *st = s->streams[avpkt->stream_index];
2315  AVStream *ost = oc->streams[0];
2316  st->internal->bsfc = ost->internal->bsfc;
2317  ost->internal->bsfc = NULL;
2318  }
2319  return ret;
2320  }
2321  return 1;
2322 }
2323 
2324 #define OFFSET(x) offsetof(DASHContext, x)
2325 #define E AV_OPT_FLAG_ENCODING_PARAM
2326 static const AVOption options[] = {
2327  { "adaptation_sets", "Adaptation sets. Syntax: id=0,streams=0,1,2 id=1,streams=3,4 and so on", OFFSET(adaptation_sets), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
2328  { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2329  { "extra_window_size", "number of segments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
2330 #if FF_API_DASH_MIN_SEG_DURATION
2331  { "min_seg_duration", "minimum segment duration (in microseconds) (will be deprecated)", OFFSET(min_seg_duration), AV_OPT_TYPE_INT, { .i64 = 5000000 }, 0, INT_MAX, E },
2332 #endif
2333  { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2334  { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2335  { "frag_type", "set type of interval for fragments", OFFSET(frag_type), AV_OPT_TYPE_INT, {.i64 = FRAG_TYPE_NONE }, 0, FRAG_TYPE_NB - 1, E, "frag_type"},
2336  { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2337  { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2338  { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2339  { "pframes", "fragment at keyframes and following P-Frame reordering (Video only, experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_PFRAMES }, 0, UINT_MAX, E, "frag_type"},
2340  { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2341  { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2342  { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2343  { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2344  { "single_file_name", "DASH-templated name to be used for baseURL. Implies storing all segments in one file, accessed using byte ranges", OFFSET(single_file_name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
2345  { "init_seg_name", "DASH-templated name to used for the initialization segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str = "init-stream$RepresentationID$.$ext$"}, 0, 0, E },
2346  { "media_seg_name", "DASH-templated name to used for the media segments", OFFSET(media_seg_name), AV_OPT_TYPE_STRING, {.str = "chunk-stream$RepresentationID$-$Number%05d$.$ext$"}, 0, 0, E },
2347  { "utc_timing_url", "URL of the page that will return the UTC timestamp in ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E },
2348  { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2349  { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2350  { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2351  { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2352  { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2353  { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2354  { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2355  { "format_options","set list of options for the container format (mp4/webm) used for dash", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
2356  { "global_sidx", "Write global SIDX atom. Applicable only for single file, mp4 output, non-streaming mode", OFFSET(global_sidx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2357  { "dash_segment_type", "set dash segment files type", OFFSET(segment_type_option), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_AUTO }, 0, SEGMENT_TYPE_NB - 1, E, "segment_type"},
2358  { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2359  { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2360  { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2361  { "ignore_io_errors", "Ignore IO errors during open and write. Useful for long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2362  { "lhls", "Enable Low-latency HLS(Experimental). Adds #EXT-X-PREFETCH tag with current segment's URI", OFFSET(lhls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2363  { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2364  { "master_m3u8_publish_rate", "Publish master playlist every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
2365  { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2366  { "mpd_profile", "Set profiles. Elements and values used in the manifest may be constrained by them", OFFSET(profile), AV_OPT_TYPE_FLAGS, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
2367  { "dash", "MPEG-DASH ISO Base media file format live profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
2368  { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2369  { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2370  { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2371  { "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2372  { "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2373  { NULL },
2374 };
2375 
2376 static const AVClass dash_class = {
2377  .class_name = "dash muxer",
2378  .item_name = av_default_item_name,
2379  .option = options,
2380  .version = LIBAVUTIL_VERSION_INT,
2381 };
2382 
2384  .name = "dash",
2385  .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2386  .extensions = "mpd",
2387  .priv_data_size = sizeof(DASHContext),
2388  .audio_codec = AV_CODEC_ID_AAC,
2389  .video_codec = AV_CODEC_ID_H264,
2391  .init = dash_init,
2395  .deinit = dash_free,
2397  .priv_class = &dash_class,
2398 };
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1594
SegmentType segment_type
Definition: dashenc.c:118
AVRational min_playback_rate
Definition: dashenc.c:197
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:703
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:1933
#define NULL
Definition: coverity.c:32
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
AVBSFContext * bsfc
bitstream filter to run on stream
Definition: internal.h:159
int last_flags
Definition: dashenc.c:116
Bytestream IO Context.
Definition: avio.h:161
Producer Reference Time data corresponding to the AVProducerReferenceTime struct, usually exported by...
Definition: packet.h:268
int use_timeline
Definition: dashenc.c:156
static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
Definition: dashenc.c:1337
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:134
static int init_segment_types(AVFormatContext *s)
Definition: dashenc.c:302
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
static struct @314 state
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
int size
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1629
static void set_http_options(AVDictionary **options, DASHContext *c)
Definition: dashenc.c:483
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1401
AVOption.
Definition: opt.h:246
static int parse_adaptation_sets(AVFormatContext *s)
Definition: dashenc.c:933
static const AVOption options[]
Definition: dashenc.c:2326
AVIOContext * mpd_out
Definition: dashenc.c:176
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:1190
const char * media_seg_name
Definition: dashenc.c:123
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
const char * single_file_name
Definition: dashenc.c:121
int64_t frag_duration
Definition: dashenc.c:153
int ambiguous_frame_rate
Definition: dashenc.c:91
#define AV_DICT_DONT_OVERWRITE
Don&#39;t overwrite existing entries.
Definition: dict.h:79
int range_length
Definition: dashenc.c:75
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:587
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int64_t frag_duration
Definition: dashenc.c:111
AVCodecParserContext * parser
Definition: dashenc.c:103
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:1305
int nb_segments
Definition: dashenc.c:109
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:938
int num
Numerator.
Definition: rational.h:59
static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
Definition: dashenc.c:242
int size
Definition: packet.h:356
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
#define AVIO_FLAG_READ
read-only
Definition: avio.h:674
int n
Definition: dashenc.c:79
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:675
uint8_t transfer_characteristics
Definition: av1.h:39
char codec_str[100]
Definition: dashenc.c:125
Convenience header that includes libavutil&#39;s core.
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
char filename[1024]
Definition: dashenc.c:127
const char * str
Definition: dashenc.c:215
int64_t timeout
Definition: dashenc.c:179
const char * key
AVFormatContext * ctx
Definition: dashenc.c:100
int single_file
Definition: dashenc.c:157
static AVPacket pkt
static int update_stream_extradata(AVFormatContext *s, OutputStream *os, AVPacket *pkt, AVRational *frame_rate)
Definition: dashenc.c:1798
int ff_is_http_proto(char *filename)
Utility function to check if the file uses http or https protocol.
Definition: utils.c:5702
int nr_of_streams_to_flush
Definition: dashenc.c:188
int packets_written
Definition: dashenc.c:105
int as_idx
Definition: dashenc.c:101
static void set_codec_str(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)
Definition: dashenc.c:358
int64_t start_pts
Definition: dashenc.c:114
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1356
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1659
static int dash_init(AVFormatContext *s)
Definition: dashenc.c:1345
uint8_t chroma_sample_position
Definition: av1.h:36
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int64_t last_pts
Definition: dashenc.c:115
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int ffurl_shutdown(URLContext *h, int flags)
Signal the URLContext that we are done reading or writing the stream.
Definition: avio.c:659
uint8_t monochrome
Definition: av1.h:33
static struct codec_string codecs[]
int64_t last_dts
Definition: dashenc.c:115
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
uint8_t chroma_subsampling_x
Definition: av1.h:34
Format I/O context.
Definition: avformat.h:1351
int global_sidx
Definition: dashenc.c:182
int frag_type
Definition: dashenc.c:87
#define gmtime_r
Definition: time_internal.h:34
int64_t init_start_pos
Definition: dashenc.c:107
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
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static int add_segment(OutputStream *os, const char *file, int64_t time, int64_t duration, int64_t start_pos, int64_t range_length, int64_t index_length, int next_exp_index)
Definition: dashenc.c:1725
int trick_idx
Definition: dashenc.c:96
static char buffer[20]
Definition: seek.c:32
static int64_t start_time
Definition: ffplay.c:332
int streaming
Definition: dashenc.c:178
char * adaptation_sets
Definition: dashenc.c:144
AdaptationSet * as
Definition: dashenc.c:145
uint8_t
int width
Video only.
Definition: codec_par.h:126
AVRational min_frame_rate
Definition: dashenc.c:90
AVOptions.
miscellaneous OS support macros and functions.
int write_prft
Definition: dashenc.c:191
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom.c:75
static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
Definition: dashenc.c:886
#define AV_RB32
Definition: intreadwrite.h:130
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5695
int extra_window_size
Definition: dashenc.c:148
static void get_start_index_number(OutputStream *os, DASHContext *c, int *start_index, int *start_number)
Definition: dashenc.c:504
int ctx_inited
Definition: dashenc.c:101
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4526
int frag_type
Definition: dashenc.c:136
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
Definition: utils.c:2193
const char * method
Definition: dashenc.c:170
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:144
const char data[16]
Definition: mxf.c:91
SegmentType
Definition: dashenc.c:54
int64_t wallclock
A UTC timestamp, in microseconds, since Unix epoch (e.g, av_gettime()).
Definition: avcodec.h:502
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
int64_t presentation_time_offset
Definition: dashenc.c:164
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
uint8_t * data
Definition: packet.h:355
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
uint32_t tag
Definition: movenc.c:1532
static void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
Definition: dashenc.c:1870
int ignore_io_errors
Definition: dashenc.c:184
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
time_t start_time_s
Definition: dashenc.c:163
static int dashenc_delete_segment_file(AVFormatContext *s, const char *file)
Definition: dashenc.c:1850
AVIOContext * m3u8_out
Definition: dashenc.c:177
int max_height
Definition: dashenc.c:93
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:213
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
uint64_t availability_start_time
Definition: dashdec.c:135
char initfile[1024]
Definition: dashenc.c:106
int64_t seg_duration
Definition: dashenc.c:152
#define av_log(a,...)
AVDictionary * format_options
Definition: dashenc.c:181
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:276
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:625
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
static void get_hls_playlist_name(char *playlist_name, int string_size, const char *base_url, int id)
Definition: dashenc.c:496
static void write_time(AVIOContext *out, int64_t time)
Definition: dashenc.c:767
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
static int write_manifest(AVFormatContext *s, int final)
Definition: dashenc.c:1137
#define src
Definition: vp8dsp.c:254
#define E
Definition: dashenc.c:2325
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
int64_t last_duration
Definition: dashenc.c:112
int hls_playlist
Definition: dashenc.c:173
#define AV_BPRINT_SIZE_UNLIMITED
AVDictionary * metadata
Definition: dashenc.c:89
const char * init_seg_name
Definition: dashenc.c:122
int remove_at_exit
Definition: dashenc.c:154
int bitdepth
Definition: vpcc.h:38
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
int64_t last_duration
Definition: dashenc.c:160
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:353
static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dashenc.c:2043
int nb_as
Definition: dashenc.c:146
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
int(* check_bitstream)(struct AVFormatContext *, const AVPacket *pkt)
Set up any necessary bitstream filtering and extract any extra data needed for the global header...
Definition: avformat.h:635
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1147
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
char * url
input or output URL.
Definition: avformat.h:1447
int video_delay
Video only.
Definition: codec_par.h:155
unsigned int pos
Definition: spdifenc.c:412
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
uint8_t color_range
Definition: av1.h:41
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
simple assert() macros that are a bit more flexible than ISO C assert().
char * av_strireplace(const char *str, const char *from, const char *to)
Locale-independent strings replace.
Definition: avstring.c:235
static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
Definition: dashenc.c:2303
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
static int flush_init_segment(AVFormatContext *s, OutputStream *os)
Definition: dashenc.c:593
static SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
Definition: dashenc.c:288
int64_t start_pos
Definition: dashenc.c:74
double availability_time_offset
Definition: dashenc.c:130
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:949
#define FFMAX(a, b)
Definition: common.h:94
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
const AVCodecTag ff_mp4_obj_type[]
Definition: isom.c:34
static void dashenc_delete_file(AVFormatContext *s, char *filename)
Definition: dashenc.c:1823
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
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
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
void * opaque
User data.
Definition: avformat.h:1857
AVOutputFormat ff_dash_muxer
Definition: dashenc.c:2383
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array through a pointer to a pointer.
Definition: mem.c:206
int ldash
Definition: dashenc.c:186
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
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:673
AVDictionary * opts
Definition: movenc.c:50
AVCodecContext * parser_avctx
Definition: dashenc.c:104
const char * media_seg_name
Definition: dashenc.c:168
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3328
AVProducerReferenceTime producer_reference_time
Definition: dashenc.c:131
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
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:505
#define FFMIN(a, b)
Definition: common.h:96
int segment_index
Definition: dashenc.c:109
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:157
int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts, int64_t pos)
Parse a packet.
Definition: parser.c:120
AVRational sar
Definition: dashenc.c:138
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
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
const char * name
Definition: avformat.h:500
int master_playlist_created
Definition: dashenc.c:175
AVFormatContext * ctx
Definition: movenc.c:48
void av_parser_close(AVCodecParserContext *s)
Definition: parser.c:224
char full_path[1024]
Definition: dashenc.c:128
char dirname[1024]
Definition: dashenc.c:165
enum AVMediaType media_type
Definition: dashenc.c:88
int64_t frag_duration
Definition: dashenc.c:86
#define s(width, name)
Definition: cbs_vp9.c:257
char * descriptor
Definition: dashenc.c:84
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1682
int index_correction
Definition: dashenc.c:180
uint8_t color_description_present_flag
Definition: av1.h:37
#define AV_DICT_APPEND
If the entry already exists, append to it.
Definition: dict.h:80
#define AV_RL32
Definition: intreadwrite.h:146
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
AVDictionary * metadata
Definition: avformat.h:940
static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)
Definition: dashenc.c:343
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
AVRational par
Definition: dashenc.c:95
int64_t pos
Definition: dashenc.c:107
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:485
int segments_size
Definition: dashenc.c:109
#define AV_ERROR_MAX_STRING_SIZE
Definition: error.h:83
#define OFFSET(x)
Definition: dashenc.c:2324
#define MPD_PROFILE_DASH
Definition: dashenc.c:69
#define AVERROR_EXPERIMENTAL
Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it...
Definition: error.h:72
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1370
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1431
int target_latency_refid
Definition: dashenc.c:196
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
Stream structure.
Definition: avformat.h:876
static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
Definition: dashenc.c:454
void ff_dash_fill_tmpl_params(char *dst, size_t buffer_size, const char *template, int rep_id, int number, int bit_rate, int64_t time)
Definition: dash.c:96
int64_t time
Definition: dashenc.c:76
Segment ** segments
Definition: dashenc.c:113
void ff_hls_write_playlist_version(AVIOContext *out, int version)
Definition: hlsplaylist.c:31
int64_t gop_size
Definition: dashenc.c:137
AVRational max_playback_rate
Definition: dashenc.c:198
int index_length
Definition: dashenc.c:75
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:55
AVCodecParserContext * av_parser_init(int codec_id)
Definition: parser.c:34
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1231
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom.c:321
void avcodec_free_context(AVCodecContext **avctx)
Free the codec context and everything associated with it and write NULL to the provided pointer...
Definition: options.c:172
int64_t max_segment_duration
Definition: dashenc.c:193
int frag_type
Definition: dashenc.c:190
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
int bit_rate
Definition: dashenc.c:117
int64_t target_latency
Definition: dashenc.c:195
SegmentType segment_type
Definition: dashenc.c:214
main external API structure.
Definition: avcodec.h:526
int nb_streams
Definition: dashenc.c:94
int use_template
Definition: dashenc.c:155
long long int64_t
Definition: coverity.c:34
int written_len
Definition: dashenc.c:126
int64_t max_gop_size
Definition: dashenc.c:192
AVRational max_frame_rate
Definition: dashenc.c:90
double prog_date_time
Definition: dashenc.c:77
#define MPD_PROFILE_DVB
Definition: dashenc.c:70
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1939
Definition: url.h:38
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
uint8_t color_primaries
Definition: av1.h:38
AVDictionary * http_opts
Definition: dashenc.c:172
Describe the class of an AVClass context structure.
Definition: log.h:67
int max_width
Definition: dashenc.c:93
const char * init_seg_name
Definition: dashenc.c:167
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
Rational number (pair of numerator and denominator).
Definition: rational.h:58
const char * format_name
Definition: dashenc.c:119
static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index, int final)
Definition: dashenc.c:801
int64_t seg_duration
Definition: dashenc.c:85
cl_device_type type
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:233
AVMediaType
Definition: avutil.h:199
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
static const char * get_format_str(SegmentType segment_type)
Definition: dashenc.c:261
int avio_open2(AVIOContext **s, const char *url, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
Definition: aviobuf.c:1141
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:1591
#define snprintf
Definition: snprintf.h:34
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4455
static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
Definition: dashenc.c:910
int64_t total_duration
Definition: dashenc.c:161
misc parsing utilities
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
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
static void find_index_range(AVFormatContext *s, const char *full_path, int64_t pos, int *index_length)
Definition: dashenc.c:1775
char file[1024]
Definition: dashenc.c:73
mfxU16 profile
Definition: qsvenc.c:45
int coding_dependency
Definition: dashenc.c:139
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:475
static const char * get_extension_str(SegmentType type, int single_file)
Definition: dashenc.c:269
static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename, AVDictionary **options)
Definition: dashenc.c:223
URLContext * ffio_geturlcontext(AVIOContext *s)
Return the URLContext associated with the AVIOContext.
Definition: aviobuf.c:971
#define flags(name, subs,...)
Definition: cbs_av1.c:576
uint8_t level
Definition: svq3.c:210
OutputStream * streams
Definition: dashenc.c:158
int init_range_length
Definition: dashenc.c:108
int ff_http_do_new_request(URLContext *h, const char *uri)
Send a new HTTP request, reusing the old connection.
Definition: http.c:333
SegmentType segment_type_option
Definition: dashenc.c:183
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
Put a description of the AVERROR code errnum in errbuf.
Definition: error.c:105
Definition: vpcc.h:35
int sample_rate
Audio only.
Definition: codec_par.h:170
#define AVFMT_AVOID_NEG_TS_MAKE_ZERO
Shift timestamps so that they start at 0.
Definition: avformat.h:1685
int64_t bitrate
Definition: h264_levels.c:131
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
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
static AVStream * ost
Main libavformat public API header.
char * av_strnstr(const char *haystack, const char *needle, size_t hay_length)
Locate the first occurrence of the string needle in the string haystack where not more than hay_lengt...
Definition: avstring.c:69
int64_t seg_duration
Definition: dashenc.c:110
if(ret< 0)
Definition: vf_mcdeint.c:279
int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, VPCC *vpcc)
Definition: vpcc.c:116
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
Utilties for rational number calculation.
const char * user_agent
Definition: dashenc.c:171
const char * single_file_name
Definition: dashenc.c:166
static double c[64]
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
int level
Definition: vpcc.h:37
uint8_t chroma_subsampling_y
Definition: av1.h:35
int ff_av1_parse_seq_header(AV1SequenceParameters *seq, const uint8_t *buf, int size)
Parses a Sequence Header from the the provided buffer.
Definition: av1.c:334
uint8_t level
Definition: av1.h:30
static int handle_io_open_error(AVFormatContext *s, int err, char *url)
Definition: dashenc.c:279
#define PARSER_FLAG_COMPLETE_FRAMES
Definition: avcodec.h:3387
int muxer_overhead
Definition: dashenc.c:135
int64_t max_frag_duration
Definition: dashenc.c:92
int den
Denominator.
Definition: rational.h:60
static void write_styp(AVIOContext *pb)
Definition: dashenc.c:1765
int64_t duration
Definition: dashenc.c:78
static int dash_write_header(AVFormatContext *s)
Definition: dashenc.c:1706
int nr_of_streams_flushed
Definition: dashenc.c:189
uint8_t tier
Definition: av1.h:31
char producer_reference_time_str[100]
Definition: dashenc.c:132
This structure supplies correlation between a packet timestamp and a wall clock production time...
Definition: avcodec.h:498
int profile
Definition: dashenc.c:194
static int check_file_extension(const char *filename, const char *extension)
Definition: dashenc.c:333
static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
Definition: dashenc.c:2017
#define av_free(p)
char * value
Definition: dict.h:87
int len
int lhls
Definition: dashenc.c:185
const char * str
Definition: dashenc.c:203
void * priv_data
Format private data.
Definition: avformat.h:1379
static void format_date(char *buf, int size, int64_t time_us)
Definition: dashenc.c:783
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:1075
const char * utc_timing_url
Definition: dashenc.c:169
int profile
Definition: vpcc.h:36
static int dash_write_trailer(AVFormatContext *s)
Definition: dashenc.c:2261
int window_size
Definition: dashenc.c:147
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
#define lrint
Definition: tablegen.h:53
static void dash_free(AVFormatContext *s)
Definition: dashenc.c:611
static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s, int representation_id, int final, char *prefetch_url)
Definition: dashenc.c:514
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
int64_t total_pkt_duration
Definition: dashenc.c:134
int has_video
Definition: dashenc.c:159
int channels
Audio only.
Definition: codec_par.h:166
int64_t max_pts
Definition: dashenc.c:114
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: packet.h:354
int avpriv_io_delete(const char *url)
Delete a resource.
Definition: avio.c:523
void ff_hls_write_end_list(AVIOContext *out)
Definition: hlsplaylist.c:189
int total_pkt_size
Definition: dashenc.c:133
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1251
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
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
static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s, int representation_id, int final)
Definition: dashenc.c:652
FILE * out
Definition: movenc.c:54
const char * extension_name
Definition: dashenc.c:120
#define av_freep(p)
internal header for VPx codec configuration utilities.
uint8_t matrix_coefficients
Definition: av1.h:40
SegmentType
Definition: pgssubdec.c:41
unbuffered private I/O API
#define AVERROR_MUXER_NOT_FOUND
Muxer not found.
Definition: error.h:60
int master_publish_rate
Definition: dashenc.c:187
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
static char * xmlescape(const char *str)
Definition: dashenc.c:727
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
formats
Definition: signature.h:48
AVIOContext * out
Definition: dashenc.c:102
char temp_path[1024]
Definition: dashenc.c:129
static int dash_flush(AVFormatContext *s, int final, int stream)
Definition: dashenc.c:1883
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int size)
Allocate new information of a packet.
Definition: avpacket.c:332
int stream_index
Definition: packet.h:357
void ff_hls_write_init_file(AVIOContext *out, const char *filename, int byterange_mode, int64_t size, int64_t pos)
Definition: hlsplaylist.c:122
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:905
int64_t first_pts
Definition: ffmpeg.h:456
#define MKTAG(a, b, c, d)
Definition: common.h:406
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:477
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2118
This structure stores compressed data.
Definition: packet.h:332
uint8_t bitdepth
Definition: av1.h:32
char * av_strndup(const char *s, size_t len)
Duplicate a substring of a string.
Definition: mem.c:265
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
Definition: avc.c:108
static const AVClass dash_class
Definition: dashenc.c:2376
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
Predicted.
Definition: avutil.h:275
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
int http_persistent
Definition: dashenc.c:174
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1368
static uint8_t tmp[11]
Definition: aes_ctr.c:26
uint8_t profile
Definition: av1.h:29