FFmpeg  4.4.4
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 {
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];
74  int64_t start_pos;
76  int64_t time;
78  int64_t duration;
79  int n;
80 } Segment;
81 
82 typedef struct AdaptationSet {
83  int id;
84  char *descriptor;
85  int64_t seg_duration;
86  int64_t frag_duration;
87  int frag_type;
96  int trick_idx;
98 
99 typedef struct OutputStream {
106  char initfile[1024];
107  int64_t init_start_pos, pos;
110  int64_t seg_duration;
111  int64_t frag_duration;
112  int64_t last_duration;
115  int64_t last_dts, last_pts;
117  int bit_rate;
119  SegmentType segment_type; /* segment type selected for this particular stream */
120  const char *format_name;
121  const char *extension_name;
122  const char *single_file_name; /* file names selected for this particular stream */
123  const char *init_seg_name;
124  const char *media_seg_name;
125 
126  char codec_str[100];
128  char filename[1024];
129  char full_path[1024];
130  char temp_path[1024];
138  int64_t gop_size;
141 } OutputStream;
142 
143 typedef struct DASHContext {
144  const AVClass *class; /* Class for private options. */
147  int nb_as;
150 #if FF_API_DASH_MIN_SEG_DURATION
152 #endif
153  int64_t seg_duration;
154  int64_t frag_duration;
161  int64_t last_duration;
162  int64_t total_duration;
164  time_t start_time_s;
166  char dirname[1024];
167  const char *single_file_name; /* file names as specified in options */
168  const char *init_seg_name;
169  const char *media_seg_name;
170  const char *utc_timing_url;
171  const char *method;
172  const char *user_agent;
175  const char *hls_master_name;
181  int64_t timeout;
185  SegmentType segment_type_option; /* segment type as specified in options */
187  int lhls;
188  int ldash;
194  int64_t max_gop_size;
196  int profile;
197  int64_t target_latency;
201  int64_t update_period;
202 } DASHContext;
203 
204 static struct codec_string {
205  int id;
206  const char *str;
207 } codecs[] = {
208  { AV_CODEC_ID_VP8, "vp8" },
209  { AV_CODEC_ID_VP9, "vp9" },
210  { AV_CODEC_ID_VORBIS, "vorbis" },
211  { AV_CODEC_ID_OPUS, "opus" },
212  { AV_CODEC_ID_FLAC, "flac" },
213  { 0, NULL }
214 };
215 
216 static struct format_string {
218  const char *str;
219 } formats[] = {
220  { SEGMENT_TYPE_AUTO, "auto" },
221  { SEGMENT_TYPE_MP4, "mp4" },
222  { SEGMENT_TYPE_WEBM, "webm" },
223  { 0, NULL }
224 };
225 
226 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
227  AVDictionary **options) {
228  DASHContext *c = s->priv_data;
229  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
230  int err = AVERROR_MUXER_NOT_FOUND;
231  if (!*pb || !http_base_proto || !c->http_persistent) {
232  err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
233 #if CONFIG_HTTP_PROTOCOL
234  } else {
235  URLContext *http_url_context = ffio_geturlcontext(*pb);
236  av_assert0(http_url_context);
237  err = ff_http_do_new_request(http_url_context, filename);
238  if (err < 0)
239  ff_format_io_close(s, pb);
240 #endif
241  }
242  return err;
243 }
244 
245 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
246  DASHContext *c = s->priv_data;
247  int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
248 
249  if (!*pb)
250  return;
251 
252  if (!http_base_proto || !c->http_persistent) {
253  ff_format_io_close(s, pb);
254 #if CONFIG_HTTP_PROTOCOL
255  } else {
256  URLContext *http_url_context = ffio_geturlcontext(*pb);
257  av_assert0(http_url_context);
258  avio_flush(*pb);
259  ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
260 #endif
261  }
262 }
263 
264 static const char *get_format_str(SegmentType segment_type) {
265  int i;
266  for (i = 0; i < SEGMENT_TYPE_NB; i++)
267  if (formats[i].segment_type == segment_type)
268  return formats[i].str;
269  return NULL;
270 }
271 
272 static const char *get_extension_str(SegmentType type, int single_file)
273 {
274  switch (type) {
275 
276  case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
277  case SEGMENT_TYPE_WEBM: return "webm";
278  default: return NULL;
279  }
280 }
281 
282 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
283  DASHContext *c = s->priv_data;
284  char errbuf[AV_ERROR_MAX_STRING_SIZE];
285  av_strerror(err, errbuf, sizeof(errbuf));
286  av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
287  "Unable to open %s for writing: %s\n", url, errbuf);
288  return c->ignore_io_errors ? 0 : err;
289 }
290 
292 {
293  if (segment_type == SEGMENT_TYPE_AUTO) {
296  segment_type = SEGMENT_TYPE_WEBM;
297  } else {
298  segment_type = SEGMENT_TYPE_MP4;
299  }
300  }
301 
302  return segment_type;
303 }
304 
306 {
307  DASHContext *c = s->priv_data;
308  int has_mp4_streams = 0;
309  for (int i = 0; i < s->nb_streams; ++i) {
310  OutputStream *os = &c->streams[i];
311  SegmentType segment_type = select_segment_type(
312  c->segment_type_option, s->streams[i]->codecpar->codec_id);
313  os->segment_type = segment_type;
314  os->format_name = get_format_str(segment_type);
315  if (!os->format_name) {
316  av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
318  }
319  os->extension_name = get_extension_str(segment_type, c->single_file);
320  if (!os->extension_name) {
321  av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
323  }
324 
325  has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
326  }
327 
328  if (c->hls_playlist && !has_mp4_streams) {
329  av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
330  c->hls_playlist = 0;
331  }
332 
333  return 0;
334 }
335 
336 static int check_file_extension(const char *filename, const char *extension) {
337  char *dot;
338  if (!filename || !extension)
339  return -1;
340  dot = strrchr(filename, '.');
341  if (dot && !strcmp(dot + 1, extension))
342  return 0;
343  return -1;
344 }
345 
347  AVRational *frame_rate, char *str, int size) {
348  VPCC vpcc;
349  int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
350  if (ret == 0) {
351  av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
352  vpcc.profile, vpcc.level, vpcc.bitdepth);
353  } else {
354  // Default to just vp9 in case of error while finding out profile or level
355  av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
356  av_strlcpy(str, "vp9", size);
357  }
358  return;
359 }
360 
362  AVRational *frame_rate, char *str, int size)
363 {
364  const AVCodecTag *tags[2] = { NULL, NULL };
365  uint32_t tag;
366  int i;
367 
368  // common Webm codecs are not part of RFC 6381
369  for (i = 0; codecs[i].id; i++)
370  if (codecs[i].id == par->codec_id) {
371  if (codecs[i].id == AV_CODEC_ID_VP9) {
372  set_vp9_codec_str(s, par, frame_rate, str, size);
373  } else {
375  }
376  return;
377  }
378 
379  // for codecs part of RFC 6381
380  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
381  tags[0] = ff_codec_movvideo_tags;
382  else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
383  tags[0] = ff_codec_movaudio_tags;
384  else
385  return;
386 
387  tag = par->codec_tag;
388  if (!tag)
389  tag = av_codec_get_tag(tags, par->codec_id);
390  if (!tag)
391  return;
392  if (size < 5)
393  return;
394 
395  AV_WL32(str, tag);
396  str[4] = '\0';
397  if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
398  uint32_t oti;
399  tags[0] = ff_mp4_obj_type;
400  oti = av_codec_get_tag(tags, par->codec_id);
401  if (oti)
402  av_strlcatf(str, size, ".%02"PRIx32, oti);
403  else
404  return;
405 
406  if (tag == MKTAG('m', 'p', '4', 'a')) {
407  if (par->extradata_size >= 2) {
408  int aot = par->extradata[0] >> 3;
409  if (aot == 31)
410  aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
411  av_strlcatf(str, size, ".%d", aot);
412  }
413  } else if (tag == MKTAG('m', 'p', '4', 'v')) {
414  // Unimplemented, should output ProfileLevelIndication as a decimal number
415  av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
416  }
417  } else if (!strcmp(str, "avc1")) {
418  uint8_t *tmpbuf = NULL;
419  uint8_t *extradata = par->extradata;
420  int extradata_size = par->extradata_size;
421  if (!extradata_size)
422  return;
423  if (extradata[0] != 1) {
424  AVIOContext *pb;
425  if (avio_open_dyn_buf(&pb) < 0)
426  return;
427  if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
428  ffio_free_dyn_buf(&pb);
429  return;
430  }
431  extradata_size = avio_close_dyn_buf(pb, &extradata);
432  tmpbuf = extradata;
433  }
434 
435  if (extradata_size >= 4)
436  av_strlcatf(str, size, ".%02x%02x%02x",
437  extradata[1], extradata[2], extradata[3]);
438  av_free(tmpbuf);
439  } else if (!strcmp(str, "av01")) {
441  if (!par->extradata_size)
442  return;
443  if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
444  return;
445 
446  av_strlcatf(str, size, ".%01u.%02u%s.%02u",
447  seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
449  av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
450  seq.monochrome,
453  seq.color_range);
454  }
455 }
456 
457 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
458 {
459  uint8_t *buffer;
460 
461  if (!os->ctx->pb) {
462  return AVERROR(EINVAL);
463  }
464 
465  // flush
466  av_write_frame(os->ctx, NULL);
467  avio_flush(os->ctx->pb);
468 
469  if (!c->single_file) {
470  // write out to file
471  *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
472  os->ctx->pb = NULL;
473  if (os->out)
474  avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
475  os->written_len = 0;
476  av_free(buffer);
477 
478  // re-open buffer
479  return avio_open_dyn_buf(&os->ctx->pb);
480  } else {
481  *range_length = avio_tell(os->ctx->pb) - os->pos;
482  return 0;
483  }
484 }
485 
487 {
488  if (c->method)
489  av_dict_set(options, "method", c->method, 0);
490  av_dict_copy(options, c->http_opts, 0);
491  if (c->user_agent)
492  av_dict_set(options, "user_agent", c->user_agent, 0);
493  if (c->http_persistent)
494  av_dict_set_int(options, "multiple_requests", 1, 0);
495  if (c->timeout >= 0)
496  av_dict_set_int(options, "timeout", c->timeout, 0);
497 }
498 
499 static void get_hls_playlist_name(char *playlist_name, int string_size,
500  const char *base_url, int id) {
501  if (base_url)
502  snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
503  else
504  snprintf(playlist_name, string_size, "media_%d.m3u8", id);
505 }
506 
508  int *start_index, int *start_number) {
509  *start_index = 0;
510  *start_number = 1;
511  if (c->window_size) {
512  *start_index = FFMAX(os->nb_segments - c->window_size, 0);
513  *start_number = FFMAX(os->segment_index - c->window_size, 1);
514  }
515 }
516 
518  int representation_id, int final,
519  char *prefetch_url) {
520  DASHContext *c = s->priv_data;
521  int timescale = os->ctx->streams[0]->time_base.den;
522  char temp_filename_hls[1024];
523  char filename_hls[1024];
524  AVDictionary *http_opts = NULL;
525  int target_duration = 0;
526  int ret = 0;
527  const char *proto = avio_find_protocol_name(c->dirname);
528  int use_rename = proto && !strcmp(proto, "file");
529  int i, start_index, start_number;
530  double prog_date_time = 0;
531 
532  get_start_index_number(os, c, &start_index, &start_number);
533 
534  if (!c->hls_playlist || start_index >= os->nb_segments ||
536  return;
537 
538  get_hls_playlist_name(filename_hls, sizeof(filename_hls),
539  c->dirname, representation_id);
540 
541  snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
542 
543  set_http_options(&http_opts, c);
544  ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
545  av_dict_free(&http_opts);
546  if (ret < 0) {
547  handle_io_open_error(s, ret, temp_filename_hls);
548  return;
549  }
550  for (i = start_index; i < os->nb_segments; i++) {
551  Segment *seg = os->segments[i];
552  double duration = (double) seg->duration / timescale;
553  if (target_duration <= duration)
554  target_duration = lrint(duration);
555  }
556 
557  ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
558  start_number, PLAYLIST_TYPE_NONE, 0);
559 
560  ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
562 
563  for (i = start_index; i < os->nb_segments; i++) {
564  Segment *seg = os->segments[i];
565 
566  if (prog_date_time == 0) {
567  if (os->nb_segments == 1)
568  prog_date_time = c->start_time_s;
569  else
570  prog_date_time = seg->prog_date_time;
571  }
572  seg->prog_date_time = prog_date_time;
573 
574  ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
575  (double) seg->duration / timescale, 0,
576  seg->range_length, seg->start_pos, NULL,
577  c->single_file ? os->initfile : seg->file,
578  &prog_date_time, 0, 0, 0);
579  if (ret < 0) {
580  av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
581  }
582  }
583 
584  if (prefetch_url)
585  avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
586 
587  if (final)
588  ff_hls_write_end_list(c->m3u8_out);
589 
590  dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
591 
592  if (use_rename)
593  ff_rename(temp_filename_hls, filename_hls, os->ctx);
594 }
595 
597 {
598  DASHContext *c = s->priv_data;
599  int ret, range_length;
600 
601  ret = flush_dynbuf(c, os, &range_length);
602  if (ret < 0)
603  return ret;
604 
605  os->pos = os->init_range_length = range_length;
606  if (!c->single_file) {
607  char filename[1024];
608  snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
609  dashenc_io_close(s, &os->out, filename);
610  }
611  return 0;
612 }
613 
615 {
616  DASHContext *c = s->priv_data;
617  int i, j;
618 
619  if (c->as) {
620  for (i = 0; i < c->nb_as; i++) {
621  av_dict_free(&c->as[i].metadata);
622  av_freep(&c->as[i].descriptor);
623  }
624  av_freep(&c->as);
625  c->nb_as = 0;
626  }
627 
628  if (!c->streams)
629  return;
630  for (i = 0; i < s->nb_streams; i++) {
631  OutputStream *os = &c->streams[i];
632  if (os->ctx && os->ctx->pb) {
633  if (!c->single_file)
634  ffio_free_dyn_buf(&os->ctx->pb);
635  else
636  avio_close(os->ctx->pb);
637  }
638  ff_format_io_close(s, &os->out);
641  av_parser_close(os->parser);
642  for (j = 0; j < os->nb_segments; j++)
643  av_free(os->segments[j]);
644  av_free(os->segments);
646  av_freep(&os->init_seg_name);
647  av_freep(&os->media_seg_name);
648  }
649  av_freep(&c->streams);
650 
651  ff_format_io_close(s, &c->mpd_out);
652  ff_format_io_close(s, &c->m3u8_out);
653 }
654 
656  int representation_id, int final)
657 {
658  DASHContext *c = s->priv_data;
659  int i, start_index, start_number;
660  get_start_index_number(os, c, &start_index, &start_number);
661 
662  if (c->use_template) {
663  int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
664  avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
665  if (!c->use_timeline) {
666  avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
667  if (c->streaming && os->availability_time_offset)
668  avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
670  }
671  if (c->streaming && os->availability_time_offset && !final)
672  avio_printf(out, "availabilityTimeComplete=\"false\" ");
673 
674  avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
675  if (c->presentation_time_offset)
676  avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
677  avio_printf(out, ">\n");
678  if (c->use_timeline) {
679  int64_t cur_time = 0;
680  avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
681  for (i = start_index; i < os->nb_segments; ) {
682  Segment *seg = os->segments[i];
683  int repeat = 0;
684  avio_printf(out, "\t\t\t\t\t\t<S ");
685  if (i == start_index || seg->time != cur_time) {
686  cur_time = seg->time;
687  avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
688  }
689  avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
690  while (i + repeat + 1 < os->nb_segments &&
691  os->segments[i + repeat + 1]->duration == seg->duration &&
692  os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
693  repeat++;
694  if (repeat > 0)
695  avio_printf(out, "r=\"%d\" ", repeat);
696  avio_printf(out, "/>\n");
697  i += 1 + repeat;
698  cur_time += (1 + repeat) * seg->duration;
699  }
700  avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
701  }
702  avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
703  } else if (c->single_file) {
704  avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
705  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);
706  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);
707  for (i = start_index; i < os->nb_segments; i++) {
708  Segment *seg = os->segments[i];
709  avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
710  if (seg->index_length)
711  avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
712  avio_printf(out, "/>\n");
713  }
714  avio_printf(out, "\t\t\t\t</SegmentList>\n");
715  } else {
716  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);
717  avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
718  for (i = start_index; i < os->nb_segments; i++) {
719  Segment *seg = os->segments[i];
720  avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
721  }
722  avio_printf(out, "\t\t\t\t</SegmentList>\n");
723  }
724  if (!c->lhls || final) {
725  write_hls_media_playlist(os, s, representation_id, final, NULL);
726  }
727 
728 }
729 
730 static char *xmlescape(const char *str) {
731  int outlen = strlen(str)*3/2 + 6;
732  char *out = av_realloc(NULL, outlen + 1);
733  int pos = 0;
734  if (!out)
735  return NULL;
736  for (; *str; str++) {
737  if (pos + 6 > outlen) {
738  char *tmp;
739  outlen = 2 * outlen + 6;
740  tmp = av_realloc(out, outlen + 1);
741  if (!tmp) {
742  av_free(out);
743  return NULL;
744  }
745  out = tmp;
746  }
747  if (*str == '&') {
748  memcpy(&out[pos], "&amp;", 5);
749  pos += 5;
750  } else if (*str == '<') {
751  memcpy(&out[pos], "&lt;", 4);
752  pos += 4;
753  } else if (*str == '>') {
754  memcpy(&out[pos], "&gt;", 4);
755  pos += 4;
756  } else if (*str == '\'') {
757  memcpy(&out[pos], "&apos;", 6);
758  pos += 6;
759  } else if (*str == '\"') {
760  memcpy(&out[pos], "&quot;", 6);
761  pos += 6;
762  } else {
763  out[pos++] = *str;
764  }
765  }
766  out[pos] = '\0';
767  return out;
768 }
769 
770 static void write_time(AVIOContext *out, int64_t time)
771 {
772  int seconds = time / AV_TIME_BASE;
773  int fractions = time % AV_TIME_BASE;
774  int minutes = seconds / 60;
775  int hours = minutes / 60;
776  seconds %= 60;
777  minutes %= 60;
778  avio_printf(out, "PT");
779  if (hours)
780  avio_printf(out, "%dH", hours);
781  if (hours || minutes)
782  avio_printf(out, "%dM", minutes);
783  avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
784 }
785 
786 static void format_date(char *buf, int size, int64_t time_us)
787 {
788  struct tm *ptm, tmbuf;
789  int64_t time_ms = time_us / 1000;
790  const time_t time_s = time_ms / 1000;
791  int millisec = time_ms - (time_s * 1000);
792  ptm = gmtime_r(&time_s, &tmbuf);
793  if (ptm) {
794  int len;
795  if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
796  buf[0] = '\0';
797  return;
798  }
799  len = strlen(buf);
800  snprintf(buf + len, size - len, ".%03dZ", millisec);
801  }
802 }
803 
805  int final)
806 {
807  DASHContext *c = s->priv_data;
808  AdaptationSet *as = &c->as[as_index];
809  AVDictionaryEntry *lang, *role;
810  int i;
811 
812  avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
813  as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
815  avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
817  avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
818  if (as->media_type == AVMEDIA_TYPE_VIDEO) {
819  avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
820  avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
821  }
822  lang = av_dict_get(as->metadata, "language", NULL, 0);
823  if (lang)
824  avio_printf(out, " lang=\"%s\"", lang->value);
825  avio_printf(out, ">\n");
826 
827  if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
828  avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
829  if (as->trick_idx >= 0)
830  avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
831  role = av_dict_get(as->metadata, "role", NULL, 0);
832  if (role)
833  avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
834  if (as->descriptor)
835  avio_printf(out, "\t\t\t%s\n", as->descriptor);
836  for (i = 0; i < s->nb_streams; i++) {
837  AVStream *st = s->streams[i];
838  OutputStream *os = &c->streams[i];
839  char bandwidth_str[64] = {'\0'};
840 
841  if (os->as_idx - 1 != as_index)
842  continue;
843 
844  if (os->bit_rate > 0)
845  snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->bit_rate);
846  else if (final) {
847  int average_bit_rate = os->pos * 8 * AV_TIME_BASE / c->total_duration;
848  snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
849  } else if (os->first_segment_bit_rate > 0)
850  snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
851 
852  if (as->media_type == AVMEDIA_TYPE_VIDEO) {
853  avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
854  i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
856  avio_printf(out, " scanType=\"unknown\"");
857  else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
858  avio_printf(out, " scanType=\"interlaced\"");
859  avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
860  if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
861  avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
862  if (as->trick_idx >= 0) {
863  AdaptationSet *tas = &c->as[as->trick_idx];
864  if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
865  avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
866  }
867  if (!os->coding_dependency)
868  avio_printf(out, " codingDependency=\"false\"");
869  avio_printf(out, ">\n");
870  } else {
871  avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
872  i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
873  avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
874  s->streams[i]->codecpar->channels);
875  }
876  if (!final && c->write_prft && os->producer_reference_time_str[0]) {
877  avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
878  i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
879  avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
880  avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
881  }
882  if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
884  avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
885  output_segment_list(os, out, s, i, final);
886  avio_printf(out, "\t\t\t</Representation>\n");
887  }
888  avio_printf(out, "\t\t</AdaptationSet>\n");
889 
890  return 0;
891 }
892 
894 {
895  DASHContext *c = s->priv_data;
896  void *mem;
897 
898  if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
899  av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
900  return AVERROR(EINVAL);
901  }
902  mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
903  if (!mem)
904  return AVERROR(ENOMEM);
905  c->as = mem;
906  ++c->nb_as;
907 
908  *as = &c->as[c->nb_as - 1];
909  memset(*as, 0, sizeof(**as));
910  (*as)->media_type = type;
911  (*as)->frag_type = -1;
912  (*as)->trick_idx = -1;
913 
914  return 0;
915 }
916 
917 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
918 {
919  DASHContext *c = s->priv_data;
920  AdaptationSet *as = &c->as[as_idx - 1];
921  OutputStream *os = &c->streams[i];
922 
923  if (as->media_type != s->streams[i]->codecpar->codec_type) {
924  av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
925  return AVERROR(EINVAL);
926  } else if (os->as_idx) {
927  av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
928  return AVERROR(EINVAL);
929  }
930  if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
931  av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
932  return AVERROR(EINVAL);
933  }
934  os->as_idx = as_idx;
935  ++as->nb_streams;
936 
937  return 0;
938 }
939 
941 {
942  DASHContext *c = s->priv_data;
943  const char *p = c->adaptation_sets;
944  enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
945  AdaptationSet *as;
946  int i, n, ret;
947 
948  // default: one AdaptationSet for each stream
949  if (!p) {
950  for (i = 0; i < s->nb_streams; i++) {
951  if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
952  return ret;
953  as->id = i;
954 
955  c->streams[i].as_idx = c->nb_as;
956  ++as->nb_streams;
957  }
958  goto end;
959  }
960 
961  // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
962  // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
963  // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
964  // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
965  // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
966  // descriptor_str should be a self-closing xml tag.
967  // seg_duration and frag_duration have the same syntax as the global options of
968  // the same name, and the former have precedence over them if set.
969  state = new_set;
970  while (*p) {
971  if (*p == ' ') {
972  p++;
973  continue;
974  } else if (state == new_set && av_strstart(p, "id=", &p)) {
975  char id_str[10], *end_str;
976 
977  n = strcspn(p, ",");
978  snprintf(id_str, sizeof(id_str), "%.*s", n, p);
979 
980  i = strtol(id_str, &end_str, 10);
981  if (id_str == end_str || i < 0 || i > c->nb_as) {
982  av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
983  return AVERROR(EINVAL);
984  }
985 
986  if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
987  return ret;
988  as->id = i;
989 
990  p += n;
991  if (*p)
992  p++;
993  state = parse_default;
994  } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
995  state = parse_seg_duration;
996  } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
997  state = parse_frag_duration;
998  } else if (state == parse_seg_duration || state == parse_frag_duration) {
999  char str[32];
1000  int64_t usecs = 0;
1001 
1002  n = strcspn(p, ",");
1003  snprintf(str, sizeof(str), "%.*s", n, p);
1004  p += n;
1005  if (*p)
1006  p++;
1007 
1008  ret = av_parse_time(&usecs, str, 1);
1009  if (ret < 0) {
1010  av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1011  return ret;
1012  }
1013 
1014  if (state == parse_seg_duration)
1015  as->seg_duration = usecs;
1016  else
1017  as->frag_duration = usecs;
1018  state = parse_default;
1019  } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1020  char type_str[16];
1021 
1022  n = strcspn(p, ",");
1023  snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1024  p += n;
1025  if (*p)
1026  p++;
1027 
1028  if (!strcmp(type_str, "duration"))
1030  else if (!strcmp(type_str, "pframes"))
1032  else if (!strcmp(type_str, "every_frame"))
1034  else if (!strcmp(type_str, "none"))
1035  as->frag_type = FRAG_TYPE_NONE;
1036  else {
1037  av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1038  return ret;
1039  }
1040  state = parse_default;
1041  } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1042  n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1043  if (n < strlen(p)) {
1044  as->descriptor = av_strndup(p, n);
1045  } else {
1046  av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1047  return AVERROR(EINVAL);
1048  }
1049  p += n;
1050  if (*p)
1051  p++;
1052  state = parse_default;
1053  } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1054  char trick_id_str[10], *end_str;
1055 
1056  n = strcspn(p, ",");
1057  snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1058  p += n;
1059 
1060  as->trick_idx = strtol(trick_id_str, &end_str, 10);
1061  if (trick_id_str == end_str || as->trick_idx < 0)
1062  return AVERROR(EINVAL);
1063 
1064  if (*p)
1065  p++;
1066  state = parse_default;
1067  } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1068  state = parsing_streams;
1069  } else if (state == parsing_streams) {
1070  AdaptationSet *as = &c->as[c->nb_as - 1];
1071  char idx_str[8], *end_str;
1072 
1073  n = strcspn(p, " ,");
1074  snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1075  p += n;
1076 
1077  // if value is "a" or "v", map all streams of that type
1078  if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1079  enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1080  av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1081 
1082  for (i = 0; i < s->nb_streams; i++) {
1083  if (s->streams[i]->codecpar->codec_type != type)
1084  continue;
1085 
1086  as->media_type = s->streams[i]->codecpar->codec_type;
1087 
1088  if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1089  return ret;
1090  }
1091  } else { // select single stream
1092  i = strtol(idx_str, &end_str, 10);
1093  if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1094  av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1095  return AVERROR(EINVAL);
1096  }
1097  av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1098 
1099  if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1100  as->media_type = s->streams[i]->codecpar->codec_type;
1101  }
1102 
1103  if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1104  return ret;
1105  }
1106 
1107  if (*p == ' ')
1108  state = new_set;
1109  if (*p)
1110  p++;
1111  } else {
1112  return AVERROR(EINVAL);
1113  }
1114  }
1115 
1116 end:
1117  // check for unassigned streams
1118  for (i = 0; i < s->nb_streams; i++) {
1119  OutputStream *os = &c->streams[i];
1120  if (!os->as_idx) {
1121  av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1122  return AVERROR(EINVAL);
1123  }
1124  }
1125 
1126  // check references for trick mode AdaptationSet
1127  for (i = 0; i < c->nb_as; i++) {
1128  as = &c->as[i];
1129  if (as->trick_idx < 0)
1130  continue;
1131  for (n = 0; n < c->nb_as; n++) {
1132  if (c->as[n].id == as->trick_idx)
1133  break;
1134  }
1135  if (n >= c->nb_as) {
1136  av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1137  return AVERROR(EINVAL);
1138  }
1139  }
1140 
1141  return 0;
1142 }
1143 
1144 static int write_manifest(AVFormatContext *s, int final)
1145 {
1146  DASHContext *c = s->priv_data;
1147  AVIOContext *out;
1148  char temp_filename[1024];
1149  int ret, i;
1150  const char *proto = avio_find_protocol_name(s->url);
1151  int use_rename = proto && !strcmp(proto, "file");
1152  static unsigned int warned_non_file = 0;
1153  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1154  AVDictionary *opts = NULL;
1155 
1156  if (!use_rename && !warned_non_file++)
1157  av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1158 
1159  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1160  set_http_options(&opts, c);
1161  ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1162  av_dict_free(&opts);
1163  if (ret < 0) {
1164  return handle_io_open_error(s, ret, temp_filename);
1165  }
1166  out = c->mpd_out;
1167  avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1168  avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1169  "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1170  "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1171  "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1172  "\tprofiles=\"");
1173  if (c->profile & MPD_PROFILE_DASH)
1174  avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1175  if (c->profile & MPD_PROFILE_DVB)
1176  avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1177  avio_printf(out, "\ttype=\"%s\"\n",
1178  final ? "static" : "dynamic");
1179  if (final) {
1180  avio_printf(out, "\tmediaPresentationDuration=\"");
1181  write_time(out, c->total_duration);
1182  avio_printf(out, "\"\n");
1183  } else {
1184  int64_t update_period = c->last_duration / AV_TIME_BASE;
1185  char now_str[100];
1186  if (c->use_template && !c->use_timeline)
1187  update_period = 500;
1188  if (c->update_period)
1189  update_period = c->update_period;
1190  avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1191  if (!c->ldash)
1192  avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1193  if (c->availability_start_time[0])
1194  avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1195  format_date(now_str, sizeof(now_str), av_gettime());
1196  if (now_str[0])
1197  avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1198  if (c->window_size && c->use_template) {
1199  avio_printf(out, "\ttimeShiftBufferDepth=\"");
1200  write_time(out, c->last_duration * c->window_size);
1201  avio_printf(out, "\"\n");
1202  }
1203  }
1204  avio_printf(out, "\tmaxSegmentDuration=\"");
1205  write_time(out, c->max_segment_duration);
1206  avio_printf(out, "\"\n");
1207  avio_printf(out, "\tminBufferTime=\"");
1208  write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1209  avio_printf(out, "\">\n");
1210  avio_printf(out, "\t<ProgramInformation>\n");
1211  if (title) {
1212  char *escaped = xmlescape(title->value);
1213  avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1214  av_free(escaped);
1215  }
1216  avio_printf(out, "\t</ProgramInformation>\n");
1217 
1218  avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1219  if (!final && c->target_latency && c->target_latency_refid >= 0) {
1220  avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1221  if (s->nb_streams > 1)
1222  avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1223  avio_printf(out, "/>\n");
1224  }
1225  if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1226  av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1227  avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1228  av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1229  avio_printf(out, "\t</ServiceDescription>\n");
1230 
1231  if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1232  OutputStream *os = &c->streams[0];
1233  int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1234  int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1235  avio_printf(out, "\t<Period id=\"0\" start=\"");
1237  avio_printf(out, "\">\n");
1238  } else {
1239  avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1240  }
1241 
1242  for (i = 0; i < c->nb_as; i++) {
1243  if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1244  return ret;
1245  }
1246  avio_printf(out, "\t</Period>\n");
1247 
1248  if (c->utc_timing_url)
1249  avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1250 
1251  avio_printf(out, "</MPD>\n");
1252  avio_flush(out);
1253  dashenc_io_close(s, &c->mpd_out, temp_filename);
1254 
1255  if (use_rename) {
1256  if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1257  return ret;
1258  }
1259 
1260  if (c->hls_playlist) {
1261  char filename_hls[1024];
1262  const char *audio_group = "A1";
1263  char audio_codec_str[128] = "\0";
1264  int is_default = 1;
1265  int max_audio_bitrate = 0;
1266 
1267  // Publish master playlist only the configured rate
1268  if (c->master_playlist_created && (!c->master_publish_rate ||
1269  c->streams[0].segment_index % c->master_publish_rate))
1270  return 0;
1271 
1272  if (*c->dirname)
1273  snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1274  else
1275  snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1276 
1277  snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1278 
1279  set_http_options(&opts, c);
1280  ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1281  av_dict_free(&opts);
1282  if (ret < 0) {
1283  return handle_io_open_error(s, ret, temp_filename);
1284  }
1285 
1286  ff_hls_write_playlist_version(c->m3u8_out, 7);
1287 
1288  for (i = 0; i < s->nb_streams; i++) {
1289  char playlist_file[64];
1290  AVStream *st = s->streams[i];
1291  OutputStream *os = &c->streams[i];
1293  continue;
1294  if (os->segment_type != SEGMENT_TYPE_MP4)
1295  continue;
1296  get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1297  ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1298  playlist_file, NULL, i, is_default);
1299  max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1300  os->muxer_overhead, max_audio_bitrate);
1301  if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1302  if (strlen(audio_codec_str))
1303  av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1304  av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1305  }
1306  is_default = 0;
1307  }
1308 
1309  for (i = 0; i < s->nb_streams; i++) {
1310  char playlist_file[64];
1311  char codec_str[128];
1312  AVStream *st = s->streams[i];
1313  OutputStream *os = &c->streams[i];
1314  char *agroup = NULL;
1315  char *codec_str_ptr = NULL;
1316  int stream_bitrate = os->muxer_overhead;
1317  if (os->bit_rate > 0)
1318  stream_bitrate += os->bit_rate;
1319  else if (final)
1320  stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1321  else if (os->first_segment_bit_rate > 0)
1322  stream_bitrate += os->first_segment_bit_rate;
1324  continue;
1325  if (os->segment_type != SEGMENT_TYPE_MP4)
1326  continue;
1327  av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1328  if (max_audio_bitrate) {
1329  agroup = (char *)audio_group;
1330  stream_bitrate += max_audio_bitrate;
1331  av_strlcat(codec_str, ",", sizeof(codec_str));
1332  av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1333  }
1334  if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1335  codec_str_ptr = codec_str;
1336  }
1337  get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1338  ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1339  playlist_file, agroup,
1340  codec_str_ptr, NULL, NULL);
1341  }
1342  dashenc_io_close(s, &c->m3u8_out, temp_filename);
1343  if (use_rename)
1344  if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1345  return ret;
1346  c->master_playlist_created = 1;
1347  }
1348 
1349  return 0;
1350 }
1351 
1352 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1353 {
1354  AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1355  if (entry)
1357  return 0;
1358 }
1359 
1361 {
1362  DASHContext *c = s->priv_data;
1363  int ret = 0, i;
1364  char *ptr;
1365  char basename[1024];
1366 
1367  c->nr_of_streams_to_flush = 0;
1368  if (c->single_file_name)
1369  c->single_file = 1;
1370  if (c->single_file)
1371  c->use_template = 0;
1372 
1373  if (!c->profile) {
1374  av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1375  return AVERROR(EINVAL);
1376  }
1377 #if FF_API_DASH_MIN_SEG_DURATION
1378  if (c->min_seg_duration != 5000000) {
1379  av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1380  c->seg_duration = c->min_seg_duration;
1381  }
1382 #endif
1383  if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1385  "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1386  return AVERROR_EXPERIMENTAL;
1387  }
1388 
1389  if (c->lhls && !c->streaming) {
1390  av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1391  c->lhls = 0;
1392  }
1393 
1394  if (c->lhls && !c->hls_playlist) {
1395  av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1396  c->lhls = 0;
1397  }
1398 
1399  if (c->ldash && !c->streaming) {
1400  av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1401  c->ldash = 0;
1402  }
1403 
1404  if (c->target_latency && !c->streaming) {
1405  av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1406  c->target_latency = 0;
1407  }
1408 
1409  if (c->global_sidx && !c->single_file) {
1410  av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1411  c->global_sidx = 0;
1412  }
1413 
1414  if (c->global_sidx && c->streaming) {
1415  av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1416  c->global_sidx = 0;
1417  }
1418  if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1419  av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1420  c->frag_type = FRAG_TYPE_EVERY_FRAME;
1421  }
1422 
1423  if (c->write_prft < 0) {
1424  c->write_prft = c->ldash;
1425  if (c->ldash)
1426  av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1427  }
1428 
1429  if (c->write_prft && !c->utc_timing_url) {
1430  av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1431  c->write_prft = 0;
1432  }
1433 
1434  if (c->write_prft && !c->streaming) {
1435  av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1436  c->write_prft = 0;
1437  }
1438 
1439  if (c->ldash && !c->write_prft) {
1440  av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1441  }
1442 
1443  if (c->target_latency && !c->write_prft) {
1444  av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1445  c->target_latency = 0;
1446  }
1447 
1448  if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1449  av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higer than the Maximum. Both will be ignored\n");
1450  c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1451  }
1452 
1453  av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1454  ptr = strrchr(c->dirname, '/');
1455  if (ptr) {
1456  av_strlcpy(basename, &ptr[1], sizeof(basename));
1457  ptr[1] = '\0';
1458  } else {
1459  c->dirname[0] = '\0';
1460  av_strlcpy(basename, s->url, sizeof(basename));
1461  }
1462 
1463  ptr = strrchr(basename, '.');
1464  if (ptr)
1465  *ptr = '\0';
1466 
1467  c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1468  if (!c->streams)
1469  return AVERROR(ENOMEM);
1470 
1471  if ((ret = parse_adaptation_sets(s)) < 0)
1472  return ret;
1473 
1474  if ((ret = init_segment_types(s)) < 0)
1475  return ret;
1476 
1477  for (i = 0; i < s->nb_streams; i++) {
1478  OutputStream *os = &c->streams[i];
1479  AdaptationSet *as = &c->as[os->as_idx - 1];
1481  AVStream *st;
1482  AVDictionary *opts = NULL;
1483  char filename[1024];
1484 
1485  os->bit_rate = s->streams[i]->codecpar->bit_rate;
1486  if (!os->bit_rate) {
1487  int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1489  av_log(s, level, "No bit rate set for stream %d\n", i);
1490  if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1491  return AVERROR(EINVAL);
1492  }
1493 
1494  // copy AdaptationSet language and role from stream metadata
1495  dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1496  dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1497 
1498  if (c->init_seg_name) {
1499  os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1500  if (!os->init_seg_name)
1501  return AVERROR(ENOMEM);
1502  }
1503  if (c->media_seg_name) {
1504  os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1505  if (!os->media_seg_name)
1506  return AVERROR(ENOMEM);
1507  }
1508  if (c->single_file_name) {
1509  os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1510  if (!os->single_file_name)
1511  return AVERROR(ENOMEM);
1512  }
1513 
1514  if (os->segment_type == SEGMENT_TYPE_WEBM) {
1515  if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1516  (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1517  (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1519  "One or many segment file names doesn't end with .webm. "
1520  "Override -init_seg_name and/or -media_seg_name and/or "
1521  "-single_file_name to end with the extension .webm\n");
1522  }
1523  if (c->streaming) {
1524  // Streaming not supported as matroskaenc buffers internally before writing the output
1525  av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1526  c->streaming = 0;
1527  }
1528  }
1529 
1530  os->ctx = ctx = avformat_alloc_context();
1531  if (!ctx)
1532  return AVERROR(ENOMEM);
1533 
1535  if (!ctx->oformat)
1536  return AVERROR_MUXER_NOT_FOUND;
1537  ctx->interrupt_callback = s->interrupt_callback;
1538  ctx->opaque = s->opaque;
1539  ctx->io_close = s->io_close;
1540  ctx->io_open = s->io_open;
1541  ctx->strict_std_compliance = s->strict_std_compliance;
1542 
1543  if (!(st = avformat_new_stream(ctx, NULL)))
1544  return AVERROR(ENOMEM);
1545  avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1546  st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1547  st->time_base = s->streams[i]->time_base;
1548  st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1549  ctx->avoid_negative_ts = s->avoid_negative_ts;
1550  ctx->flags = s->flags;
1551 
1552  os->parser = av_parser_init(st->codecpar->codec_id);
1553  if (os->parser) {
1555  if (!os->parser_avctx)
1556  return AVERROR(ENOMEM);
1558  if (ret < 0)
1559  return ret;
1560  // We only want to parse frame headers
1562  }
1563 
1564  if (c->single_file) {
1565  if (os->single_file_name)
1566  ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1567  else
1568  snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1569  } else {
1570  ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1571  }
1572  snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1573  set_http_options(&opts, c);
1574  if (!c->single_file) {
1575  if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1576  return ret;
1577  ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1578  } else {
1579  ctx->url = av_strdup(filename);
1580  ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1581  }
1582  av_dict_free(&opts);
1583  if (ret < 0)
1584  return ret;
1585  os->init_start_pos = 0;
1586 
1587  av_dict_copy(&opts, c->format_options, 0);
1588  if (!as->seg_duration)
1589  as->seg_duration = c->seg_duration;
1590  if (!as->frag_duration)
1591  as->frag_duration = c->frag_duration;
1592  if (as->frag_type < 0)
1593  as->frag_type = c->frag_type;
1594  os->seg_duration = as->seg_duration;
1595  os->frag_duration = as->frag_duration;
1596  os->frag_type = as->frag_type;
1597 
1598  c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1599 
1600  if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1601  av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1602  return AVERROR(EINVAL);
1603  }
1604 
1605  if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1606  av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1607  os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1608  }
1609  if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1610  av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1611  return AVERROR(EINVAL);
1612  }
1613  if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1614  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1615  av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1616  os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1617  }
1618  if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1619  // Set this now if a parser isn't used
1620  os->coding_dependency = 1;
1621 
1622  if (os->segment_type == SEGMENT_TYPE_MP4) {
1623  if (c->streaming)
1624  // skip_sidx : Reduce bitrate overhead
1625  // skip_trailer : Avoids growing memory usage with time
1626  av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1627  else {
1628  if (c->global_sidx)
1629  av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1630  else
1631  av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1632  }
1633  if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1634  av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1635  else
1636  av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1637  if (os->frag_type == FRAG_TYPE_DURATION)
1638  av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1639  if (c->write_prft)
1640  av_dict_set(&opts, "write_prft", "wallclock", 0);
1641  } else {
1642  av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1643  av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1644  av_dict_set_int(&opts, "dash", 1, 0);
1645  av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1646  av_dict_set_int(&opts, "live", 1, 0);
1647  }
1648  ret = avformat_init_output(ctx, &opts);
1649  av_dict_free(&opts);
1650  if (ret < 0)
1651  return ret;
1652  os->ctx_inited = 1;
1653  avio_flush(ctx->pb);
1654 
1655  av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1656 
1657  s->streams[i]->time_base = st->time_base;
1658  // If the muxer wants to shift timestamps, request to have them shifted
1659  // already before being handed to this muxer, so we don't have mismatches
1660  // between the MPD and the actual segments.
1661  s->avoid_negative_ts = ctx->avoid_negative_ts;
1662  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1663  AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1664  AVRational par;
1665  if (avg_frame_rate.num > 0) {
1666  if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1667  as->min_frame_rate = avg_frame_rate;
1668  if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1669  as->max_frame_rate = avg_frame_rate;
1670  } else {
1671  as->ambiguous_frame_rate = 1;
1672  }
1673 
1674  if (st->codecpar->width > as->max_width)
1675  as->max_width = st->codecpar->width;
1676  if (st->codecpar->height > as->max_height)
1677  as->max_height = st->codecpar->height;
1678 
1679  if (st->sample_aspect_ratio.num)
1680  os->sar = st->sample_aspect_ratio;
1681  else
1682  os->sar = (AVRational){1,1};
1683  av_reduce(&par.num, &par.den,
1684  st->codecpar->width * (int64_t)os->sar.num,
1685  st->codecpar->height * (int64_t)os->sar.den,
1686  1024 * 1024);
1687 
1688  if (as->par.num && av_cmp_q(par, as->par)) {
1689  av_log(s, AV_LOG_ERROR, "Conflicting stream aspect ratios values in Adaptation Set %d. Please ensure all adaptation sets have the same aspect ratio\n", os->as_idx);
1690  return AVERROR(EINVAL);
1691  }
1692  as->par = par;
1693 
1694  c->has_video = 1;
1695  }
1696 
1698  sizeof(os->codec_str));
1699  os->first_pts = AV_NOPTS_VALUE;
1700  os->max_pts = AV_NOPTS_VALUE;
1701  os->last_dts = AV_NOPTS_VALUE;
1702  os->segment_index = 1;
1703 
1704  if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1705  c->nr_of_streams_to_flush++;
1706  }
1707 
1708  if (!c->has_video && c->seg_duration <= 0) {
1709  av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1710  return AVERROR(EINVAL);
1711  }
1712  if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1713  av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1714 
1715  c->nr_of_streams_flushed = 0;
1716  c->target_latency_refid = -1;
1717 
1718  return 0;
1719 }
1720 
1722 {
1723  DASHContext *c = s->priv_data;
1724  int i, ret;
1725  for (i = 0; i < s->nb_streams; i++) {
1726  OutputStream *os = &c->streams[i];
1727  if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1728  return ret;
1729 
1730  // Flush init segment
1731  // Only for WebM segment, since for mp4 delay_moov is set and
1732  // the init segment is thus flushed after the first packets.
1733  if (os->segment_type == SEGMENT_TYPE_WEBM &&
1734  (ret = flush_init_segment(s, os)) < 0)
1735  return ret;
1736  }
1737  return ret;
1738 }
1739 
1740 static int add_segment(OutputStream *os, const char *file,
1741  int64_t time, int64_t duration,
1742  int64_t start_pos, int64_t range_length,
1743  int64_t index_length, int next_exp_index)
1744 {
1745  int err;
1746  Segment *seg;
1747  if (os->nb_segments >= os->segments_size) {
1748  os->segments_size = (os->segments_size + 1) * 2;
1749  if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1750  os->segments_size)) < 0) {
1751  os->segments_size = 0;
1752  os->nb_segments = 0;
1753  return err;
1754  }
1755  }
1756  seg = av_mallocz(sizeof(*seg));
1757  if (!seg)
1758  return AVERROR(ENOMEM);
1759  av_strlcpy(seg->file, file, sizeof(seg->file));
1760  seg->time = time;
1761  seg->duration = duration;
1762  if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1763  seg->duration += seg->time;
1764  seg->time = 0;
1765  }
1766  seg->start_pos = start_pos;
1767  seg->range_length = range_length;
1768  seg->index_length = index_length;
1769  os->segments[os->nb_segments++] = seg;
1770  os->segment_index++;
1771  //correcting the segment index if it has fallen behind the expected value
1772  if (os->segment_index < next_exp_index) {
1773  av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1774  file, os->segment_index, next_exp_index);
1775  os->segment_index = next_exp_index;
1776  }
1777  return 0;
1778 }
1779 
1780 static void write_styp(AVIOContext *pb)
1781 {
1782  avio_wb32(pb, 24);
1783  ffio_wfourcc(pb, "styp");
1784  ffio_wfourcc(pb, "msdh");
1785  avio_wb32(pb, 0); /* minor */
1786  ffio_wfourcc(pb, "msdh");
1787  ffio_wfourcc(pb, "msix");
1788 }
1789 
1790 static void find_index_range(AVFormatContext *s, const char *full_path,
1791  int64_t pos, int *index_length)
1792 {
1793  uint8_t buf[8];
1794  AVIOContext *pb;
1795  int ret;
1796 
1797  ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1798  if (ret < 0)
1799  return;
1800  if (avio_seek(pb, pos, SEEK_SET) != pos) {
1801  ff_format_io_close(s, &pb);
1802  return;
1803  }
1804  ret = avio_read(pb, buf, 8);
1805  ff_format_io_close(s, &pb);
1806  if (ret < 8)
1807  return;
1808  if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1809  return;
1810  *index_length = AV_RB32(&buf[0]);
1811 }
1812 
1814  AVPacket *pkt, AVRational *frame_rate)
1815 {
1816  AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1817  uint8_t *extradata;
1818  buffer_size_t extradata_size;
1819  int ret;
1820 
1821  if (par->extradata_size)
1822  return 0;
1823 
1824  extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1825  if (!extradata_size)
1826  return 0;
1827 
1828  ret = ff_alloc_extradata(par, extradata_size);
1829  if (ret < 0)
1830  return ret;
1831 
1832  memcpy(par->extradata, extradata, extradata_size);
1833 
1834  set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1835 
1836  return 0;
1837 }
1838 
1839 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1840  DASHContext *c = s->priv_data;
1841  int http_base_proto = ff_is_http_proto(filename);
1842 
1843  if (http_base_proto) {
1844  AVIOContext *out = NULL;
1845  AVDictionary *http_opts = NULL;
1846 
1847  set_http_options(&http_opts, c);
1848  av_dict_set(&http_opts, "method", "DELETE", 0);
1849 
1850  if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1851  av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1852  }
1853 
1854  av_dict_free(&http_opts);
1856  } else {
1857  int res = avpriv_io_delete(filename);
1858  if (res < 0) {
1859  char errbuf[AV_ERROR_MAX_STRING_SIZE];
1860  av_strerror(res, errbuf, sizeof(errbuf));
1861  av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1862  }
1863  }
1864 }
1865 
1866 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1867 {
1868  DASHContext *c = s->priv_data;
1869  AVBPrint buf;
1870 
1872 
1873  av_bprintf(&buf, "%s%s", c->dirname, file);
1874  if (!av_bprint_is_complete(&buf)) {
1875  av_bprint_finalize(&buf, NULL);
1876  av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1877  return AVERROR(ENOMEM);
1878  }
1879 
1880  dashenc_delete_file(s, buf.str);
1881 
1882  av_bprint_finalize(&buf, NULL);
1883  return 0;
1884 }
1885 
1886 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1887 {
1888  for (int i = 0; i < remove_count; ++i) {
1890 
1891  // Delete the segment regardless of whether the file was successfully deleted
1892  av_free(os->segments[i]);
1893  }
1894 
1895  os->nb_segments -= remove_count;
1896  memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1897 }
1898 
1899 static int dash_flush(AVFormatContext *s, int final, int stream)
1900 {
1901  DASHContext *c = s->priv_data;
1902  int i, ret = 0;
1903 
1904  const char *proto = avio_find_protocol_name(s->url);
1905  int use_rename = proto && !strcmp(proto, "file");
1906 
1907  int cur_flush_segment_index = 0, next_exp_index = -1;
1908  if (stream >= 0) {
1909  cur_flush_segment_index = c->streams[stream].segment_index;
1910 
1911  //finding the next segment's expected index, based on the current pts value
1912  if (c->use_template && !c->use_timeline && c->index_correction &&
1913  c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1914  c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1915  int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1916  c->streams[stream].first_pts,
1917  s->streams[stream]->time_base,
1918  AV_TIME_BASE_Q);
1919  next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1920  }
1921  }
1922 
1923  for (i = 0; i < s->nb_streams; i++) {
1924  OutputStream *os = &c->streams[i];
1925  AVStream *st = s->streams[i];
1926  int range_length, index_length = 0;
1927  int64_t duration;
1928 
1929  if (!os->packets_written)
1930  continue;
1931 
1932  // Flush the single stream that got a keyframe right now.
1933  // Flush all audio streams as well, in sync with video keyframes,
1934  // but not the other video streams.
1935  if (stream >= 0 && i != stream) {
1936  if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1937  s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1938  continue;
1939  if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1940  continue;
1941  // Make sure we don't flush audio streams multiple times, when
1942  // all video streams are flushed one at a time.
1943  if (c->has_video && os->segment_index > cur_flush_segment_index)
1944  continue;
1945  }
1946 
1947  if (c->single_file)
1948  snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1949 
1950  ret = flush_dynbuf(c, os, &range_length);
1951  if (ret < 0)
1952  break;
1953  os->packets_written = 0;
1954 
1955  if (c->single_file) {
1956  find_index_range(s, os->full_path, os->pos, &index_length);
1957  } else {
1958  dashenc_io_close(s, &os->out, os->temp_path);
1959 
1960  if (use_rename) {
1961  ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1962  if (ret < 0)
1963  break;
1964  }
1965  }
1966 
1969 
1970  if (!os->muxer_overhead && os->max_pts > os->start_pts)
1971  os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1972  8 * AV_TIME_BASE) / duration;
1973  os->total_pkt_size = 0;
1974  os->total_pkt_duration = 0;
1975 
1976  if (!os->bit_rate && !os->first_segment_bit_rate) {
1977  os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1978  }
1979  add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1980  av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1981 
1982  os->pos += range_length;
1983  }
1984 
1985  if (c->window_size) {
1986  for (i = 0; i < s->nb_streams; i++) {
1987  OutputStream *os = &c->streams[i];
1988  int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1989  if (remove_count > 0)
1990  dashenc_delete_media_segments(s, os, remove_count);
1991  }
1992  }
1993 
1994  if (final) {
1995  for (i = 0; i < s->nb_streams; i++) {
1996  OutputStream *os = &c->streams[i];
1997  if (os->ctx && os->ctx_inited) {
1998  int64_t file_size = avio_tell(os->ctx->pb);
1999  av_write_trailer(os->ctx);
2000  if (c->global_sidx) {
2001  int j, start_index, start_number;
2002  int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
2003  get_start_index_number(os, c, &start_index, &start_number);
2004  if (start_index >= os->nb_segments ||
2006  continue;
2007  os->init_range_length += sidx_size;
2008  for (j = start_index; j < os->nb_segments; j++) {
2009  Segment *seg = os->segments[j];
2010  seg->start_pos += sidx_size;
2011  }
2012  }
2013 
2014  }
2015  }
2016  }
2017  if (ret >= 0) {
2018  if (c->has_video && !final) {
2019  c->nr_of_streams_flushed++;
2020  if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
2021  return ret;
2022 
2023  c->nr_of_streams_flushed = 0;
2024  }
2025  ret = write_manifest(s, final);
2026  }
2027  return ret;
2028 }
2029 
2031 {
2032  OutputStream *os = &c->streams[pkt->stream_index];
2034  buffer_size_t side_data_size;
2035 
2037  if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2038  // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2039  // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2041  sizeof(AVProducerReferenceTime));
2042  if (!prft)
2043  return AVERROR(ENOMEM);
2044  prft->wallclock = av_gettime();
2045  prft->flags = 24;
2046  }
2047  if (os->first_pts == AV_NOPTS_VALUE) {
2048  os->producer_reference_time = *prft;
2049  if (c->target_latency_refid < 0)
2050  c->target_latency_refid = pkt->stream_index;
2051  }
2052 
2053  return 0;
2054 }
2055 
2057 {
2058  DASHContext *c = s->priv_data;
2059  AVStream *st = s->streams[pkt->stream_index];
2060  OutputStream *os = &c->streams[pkt->stream_index];
2061  AdaptationSet *as = &c->as[os->as_idx - 1];
2062  int64_t seg_end_duration, elapsed_duration;
2063  int ret;
2064 
2065  ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2066  if (ret < 0)
2067  return ret;
2068 
2069  // Fill in a heuristic guess of the packet duration, if none is available.
2070  // The mp4 muxer will do something similar (for the last packet in a fragment)
2071  // if nothing is set (setting it for the other packets doesn't hurt).
2072  // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2073  // invoke its heuristic (this doesn't have to be identical to that algorithm),
2074  // so that we know the exact timestamps of fragments.
2075  if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2076  pkt->duration = pkt->dts - os->last_dts;
2077  os->last_dts = pkt->dts;
2078 
2079  // If forcing the stream to start at 0, the mp4 muxer will set the start
2080  // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2081  if (os->first_pts == AV_NOPTS_VALUE &&
2082  s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2083  pkt->pts -= pkt->dts;
2084  pkt->dts = 0;
2085  }
2086 
2087  if (c->write_prft) {
2088  ret = dash_parse_prft(c, pkt);
2089  if (ret < 0)
2090  return ret;
2091  }
2092 
2093  if (os->first_pts == AV_NOPTS_VALUE) {
2094  os->first_pts = pkt->pts;
2095  }
2096  os->last_pts = pkt->pts;
2097 
2098  if (!c->availability_start_time[0]) {
2099  int64_t start_time_us = av_gettime();
2100  c->start_time_s = start_time_us / 1000000;
2101  format_date(c->availability_start_time,
2102  sizeof(c->availability_start_time), start_time_us);
2103  }
2104 
2105  if (!os->packets_written)
2106  os->availability_time_offset = 0;
2107 
2108  if (!os->availability_time_offset &&
2109  ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2110  (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2111  AdaptationSet *as = &c->as[os->as_idx - 1];
2112  int64_t frame_duration = 0;
2113 
2114  switch (os->frag_type) {
2115  case FRAG_TYPE_DURATION:
2116  frame_duration = os->frag_duration;
2117  break;
2118  case FRAG_TYPE_EVERY_FRAME:
2119  frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2120  break;
2121  }
2122 
2123  os->availability_time_offset = ((double) os->seg_duration -
2124  frame_duration) / AV_TIME_BASE;
2125  as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2126  }
2127 
2128  if (c->use_template && !c->use_timeline) {
2129  elapsed_duration = pkt->pts - os->first_pts;
2130  seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2131  } else {
2132  elapsed_duration = pkt->pts - os->start_pts;
2133  seg_end_duration = os->seg_duration;
2134  }
2135 
2136  if (os->parser &&
2137  (os->frag_type == FRAG_TYPE_PFRAMES ||
2138  as->trick_idx >= 0)) {
2139  // Parse the packets only in scenarios where it's needed
2140  uint8_t *data;
2141  int size;
2143  &data, &size, pkt->data, pkt->size,
2144  pkt->pts, pkt->dts, pkt->pos);
2145 
2147  }
2148 
2149  if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2150  av_compare_ts(elapsed_duration, st->time_base,
2151  seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2152  if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2153  c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2154  st->time_base,
2155  AV_TIME_BASE_Q);
2156  c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2157  st->time_base,
2158  AV_TIME_BASE_Q);
2159 
2160  if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2161  if (c->last_duration < os->last_duration*9/10 ||
2162  c->last_duration > os->last_duration*11/10) {
2164  "Segment durations differ too much, enable use_timeline "
2165  "and use_template, or keep a stricter keyframe interval\n");
2166  }
2167  }
2168  }
2169 
2170  if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2172  sizeof(os->producer_reference_time_str),
2174 
2175  if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2176  return ret;
2177  }
2178 
2179  if (!os->packets_written) {
2180  // If we wrote a previous segment, adjust the start time of the segment
2181  // to the end of the previous one (which is the same as the mp4 muxer
2182  // does). This avoids gaps in the timeline.
2183  if (os->max_pts != AV_NOPTS_VALUE)
2184  os->start_pts = os->max_pts;
2185  else
2186  os->start_pts = pkt->pts;
2187  }
2188  if (os->max_pts == AV_NOPTS_VALUE)
2189  os->max_pts = pkt->pts + pkt->duration;
2190  else
2191  os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2192 
2193  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2194  os->frag_type == FRAG_TYPE_PFRAMES &&
2195  os->packets_written) {
2196  av_assert0(os->parser);
2197  if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2198  st->codecpar->video_delay &&
2199  !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2200  pkt->flags & AV_PKT_FLAG_KEY) {
2201  ret = av_write_frame(os->ctx, NULL);
2202  if (ret < 0)
2203  return ret;
2204 
2205  if (!os->availability_time_offset) {
2206  int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2207  AV_TIME_BASE_Q);
2208  os->availability_time_offset = ((double) os->seg_duration -
2209  frag_duration) / AV_TIME_BASE;
2210  as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2211  }
2212  }
2213  }
2214 
2215  if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2217  c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2218  }
2219 
2220  if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2221  return ret;
2222 
2223  os->packets_written++;
2224  os->total_pkt_size += pkt->size;
2226  os->last_flags = pkt->flags;
2227 
2228  if (!os->init_range_length)
2229  flush_init_segment(s, os);
2230 
2231  //open the output context when the first frame of a segment is ready
2232  if (!c->single_file && os->packets_written == 1) {
2233  AVDictionary *opts = NULL;
2234  const char *proto = avio_find_protocol_name(s->url);
2235  int use_rename = proto && !strcmp(proto, "file");
2236  if (os->segment_type == SEGMENT_TYPE_MP4)
2237  write_styp(os->ctx->pb);
2238  os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2239  ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2241  os->segment_index, os->bit_rate, os->start_pts);
2242  snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2243  os->filename);
2244  snprintf(os->temp_path, sizeof(os->temp_path),
2245  use_rename ? "%s.tmp" : "%s", os->full_path);
2246  set_http_options(&opts, c);
2247  ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2248  av_dict_free(&opts);
2249  if (ret < 0) {
2250  return handle_io_open_error(s, ret, os->temp_path);
2251  }
2252  if (c->lhls) {
2253  char *prefetch_url = use_rename ? NULL : os->filename;
2254  write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2255  }
2256  }
2257 
2258  //write out the data immediately in streaming mode
2259  if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2260  int len = 0;
2261  uint8_t *buf = NULL;
2262  avio_flush(os->ctx->pb);
2263  len = avio_get_dyn_buf (os->ctx->pb, &buf);
2264  if (os->out) {
2265  avio_write(os->out, buf + os->written_len, len - os->written_len);
2266  avio_flush(os->out);
2267  }
2268  os->written_len = len;
2269  }
2270 
2271  return ret;
2272 }
2273 
2275 {
2276  DASHContext *c = s->priv_data;
2277  int i;
2278 
2279  if (s->nb_streams > 0) {
2280  OutputStream *os = &c->streams[0];
2281  // If no segments have been written so far, try to do a crude
2282  // guess of the segment duration
2283  if (!c->last_duration)
2284  c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2285  s->streams[0]->time_base,
2286  AV_TIME_BASE_Q);
2287  c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2288  s->streams[0]->time_base,
2289  AV_TIME_BASE_Q);
2290  }
2291  dash_flush(s, 1, -1);
2292 
2293  if (c->remove_at_exit) {
2294  for (i = 0; i < s->nb_streams; ++i) {
2295  OutputStream *os = &c->streams[i];
2298  if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2299  char filename[1024];
2300  get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2301  dashenc_delete_file(s, filename);
2302  }
2303  }
2304  dashenc_delete_file(s, s->url);
2305 
2306  if (c->hls_playlist && c->master_playlist_created) {
2307  char filename[1024];
2308  snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2309  dashenc_delete_file(s, filename);
2310  }
2311  }
2312 
2313  return 0;
2314 }
2315 
2316 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2317 {
2318  DASHContext *c = s->priv_data;
2319  OutputStream *os = &c->streams[avpkt->stream_index];
2320  AVFormatContext *oc = os->ctx;
2321  if (oc->oformat->check_bitstream) {
2322  int ret;
2323  AVPacket pkt = *avpkt;
2324  pkt.stream_index = 0;
2325  ret = oc->oformat->check_bitstream(oc, &pkt);
2326  if (ret == 1) {
2327  AVStream *st = s->streams[avpkt->stream_index];
2328  AVStream *ost = oc->streams[0];
2329  st->internal->bsfc = ost->internal->bsfc;
2330  ost->internal->bsfc = NULL;
2331  }
2332  return ret;
2333  }
2334  return 1;
2335 }
2336 
2337 #define OFFSET(x) offsetof(DASHContext, x)
2338 #define E AV_OPT_FLAG_ENCODING_PARAM
2339 static const AVOption options[] = {
2340  { "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 },
2341  { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2342  { "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 },
2343 #if FF_API_DASH_MIN_SEG_DURATION
2344  { "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 },
2345 #endif
2346  { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2347  { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2348  { "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"},
2349  { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2350  { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2351  { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2352  { "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"},
2353  { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2354  { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2355  { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2356  { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2357  { "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 },
2358  { "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 },
2359  { "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 },
2360  { "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 },
2361  { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2362  { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2363  { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2364  { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2365  { "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2366  { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2367  { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2368  { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2369  { "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},
2370  { "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 },
2371  { "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"},
2372  { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2373  { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2374  { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2375  { "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 },
2376  { "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 },
2377  { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2378  { "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},
2379  { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2380  { "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"},
2381  { "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"},
2382  { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2383  { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2384  { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2385  { "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2386  { "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2387  { "update_period", "Set the mpd update interval", OFFSET(update_period), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2388  { NULL },
2389 };
2390 
2391 static const AVClass dash_class = {
2392  .class_name = "dash muxer",
2393  .item_name = av_default_item_name,
2394  .option = options,
2395  .version = LIBAVUTIL_VERSION_INT,
2396 };
2397 
2399  .name = "dash",
2400  .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2401  .extensions = "mpd",
2402  .priv_data_size = sizeof(DASHContext),
2403  .audio_codec = AV_CODEC_ID_AAC,
2404  .video_codec = AV_CODEC_ID_H264,
2406  .init = dash_init,
2410  .deinit = dash_free,
2412  .priv_class = &dash_class,
2413 };
uint8_t
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
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
Definition: avc.c:108
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1606
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:1603
#define PARSER_FLAG_COMPLETE_FRAMES
Definition: avcodec.h:3411
Main libavformat public API header.
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:475
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
#define AVFMT_AVOID_NEG_TS_MAKE_ZERO
Shift timestamps so that they start at 0.
Definition: avformat.h:1580
int ffurl_shutdown(URLContext *h, int flags)
Signal the URLContext that we are done reading or writing the stream.
Definition: avio.c:654
int avpriv_io_delete(const char *url)
Delete a resource.
Definition: avio.c:518
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
Definition: avio.c:470
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:668
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:383
#define AVIO_FLAG_READ
read-only
Definition: avio.h:674
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:675
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1427
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:633
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
Definition: aviobuf.c:1172
void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:245
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1382
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:1166
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1394
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1457
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
URLContext * ffio_geturlcontext(AVIOContext *s)
Return the URLContext associated with the AVIOContext.
Definition: aviobuf.c:979
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
Definition: avpacket.c:368
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t size)
Definition: avpacket.c:343
#define AV_RB32
Definition: intreadwrite.h:130
#define AV_RB16
Definition: intreadwrite.h:53
#define AV_RL32
Definition: intreadwrite.h:146
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
Convenience header that includes libavutil's core.
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
#define AV_BPRINT_SIZE_UNLIMITED
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
static struct @321 state
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: codec_par.c:72
@ AV_FIELD_UNKNOWN
Definition: codec_par.h:37
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:38
#define FFMIN(a, b)
Definition: common.h:105
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
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
static void write_time(AVIOContext *out, int64_t time)
Definition: dashenc.c:770
AVOutputFormat ff_dash_muxer
Definition: dashenc.c:2398
#define E
Definition: dashenc.c:2338
static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
Definition: dashenc.c:1352
static char * xmlescape(const char *str)
Definition: dashenc.c:730
static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
Definition: dashenc.c:2030
static const AVOption options[]
Definition: dashenc.c:2339
static int init_segment_types(AVFormatContext *s)
Definition: dashenc.c:305
static void get_start_index_number(OutputStream *os, DASHContext *c, int *start_index, int *start_number)
Definition: dashenc.c:507
static int update_stream_extradata(AVFormatContext *s, OutputStream *os, AVPacket *pkt, AVRational *frame_rate)
Definition: dashenc.c:1813
SegmentType
Definition: dashenc.c:54
@ SEGMENT_TYPE_AUTO
Definition: dashenc.c:55
@ SEGMENT_TYPE_WEBM
Definition: dashenc.c:57
@ SEGMENT_TYPE_MP4
Definition: dashenc.c:56
@ SEGMENT_TYPE_NB
Definition: dashenc.c:58
static const AVClass dash_class
Definition: dashenc.c:2391
static void dash_free(AVFormatContext *s)
Definition: dashenc.c:614
static int dashenc_delete_segment_file(AVFormatContext *s, const char *file)
Definition: dashenc.c:1866
#define MPD_PROFILE_DVB
Definition: dashenc.c:70
static int dash_flush(AVFormatContext *s, int final, int stream)
Definition: dashenc.c:1899
static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
Definition: dashenc.c:245
static int dash_init(AVFormatContext *s)
Definition: dashenc.c:1360
static const char * get_format_str(SegmentType segment_type)
Definition: dashenc.c:264
static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename, AVDictionary **options)
Definition: dashenc.c:226
#define MPD_PROFILE_DASH
Definition: dashenc.c:69
static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
Definition: dashenc.c:893
static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s, int representation_id, int final)
Definition: dashenc.c:655
static void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
Definition: dashenc.c:1886
static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dashenc.c:2056
static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
Definition: dashenc.c:457
static void get_hls_playlist_name(char *playlist_name, int string_size, const char *base_url, int id)
Definition: dashenc.c:499
static void find_index_range(AVFormatContext *s, const char *full_path, int64_t pos, int *index_length)
Definition: dashenc.c:1790
static int parse_adaptation_sets(AVFormatContext *s)
Definition: dashenc.c:940
static const char * get_extension_str(SegmentType type, int single_file)
Definition: dashenc.c:272
@ FRAG_TYPE_EVERY_FRAME
Definition: dashenc.c:63
@ FRAG_TYPE_NB
Definition: dashenc.c:66
@ FRAG_TYPE_PFRAMES
Definition: dashenc.c:65
@ FRAG_TYPE_DURATION
Definition: dashenc.c:64
@ FRAG_TYPE_NONE
Definition: dashenc.c:62
static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s, int representation_id, int final, char *prefetch_url)
Definition: dashenc.c:517
static struct codec_string codecs[]
static void write_styp(AVIOContext *pb)
Definition: dashenc.c:1780
static int dash_write_header(AVFormatContext *s)
Definition: dashenc.c:1721
static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)
Definition: dashenc.c:346
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:1740
static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
Definition: dashenc.c:2316
static int handle_io_open_error(AVFormatContext *s, int err, char *url)
Definition: dashenc.c:282
static int check_file_extension(const char *filename, const char *extension)
Definition: dashenc.c:336
#define OFFSET(x)
Definition: dashenc.c:2337
static void set_http_options(AVDictionary **options, DASHContext *c)
Definition: dashenc.c:486
static int dash_write_trailer(AVFormatContext *s)
Definition: dashenc.c:2274
static void format_date(char *buf, int size, int64_t time_us)
Definition: dashenc.c:786
static void dashenc_delete_file(AVFormatContext *s, char *filename)
Definition: dashenc.c:1839
static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
Definition: dashenc.c:917
static SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
Definition: dashenc.c:291
static int write_manifest(AVFormatContext *s, int final)
Definition: dashenc.c:1144
static void set_codec_str(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)
Definition: dashenc.c:361
static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index, int final)
Definition: dashenc.c:804
static int flush_init_segment(AVFormatContext *s, OutputStream *os)
Definition: dashenc.c:596
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
static int64_t start_time
Definition: ffplay.c:332
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:230
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
@ AV_OPT_TYPE_INT64
Definition: opt.h:226
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_DICT
Definition: opt.h:232
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
Definition: codec_par.c:147
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:173
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:188
@ AV_CODEC_ID_VORBIS
Definition: codec_id.h:429
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
@ AV_CODEC_ID_VP8
Definition: codec_id.h:189
@ AV_CODEC_ID_HEVC
Definition: codec_id.h:223
@ AV_CODEC_ID_AAC
Definition: codec_id.h:426
@ AV_CODEC_ID_FLAC
Definition: codec_id.h:436
@ AV_CODEC_ID_VP9
Definition: codec_id.h:217
@ AV_CODEC_ID_OPUS
Definition: codec_id.h:484
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
@ AV_PKT_DATA_PRFT
Producer Reference Time data corresponding to the AVProducerReferenceTime struct, usually exported by...
Definition: packet.h:268
@ AV_PKT_DATA_NEW_EXTRADATA
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
void av_parser_close(AVCodecParserContext *s)
Definition: parser.c:228
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
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4436
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:211
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4509
av_warn_unused_result int avformat_init_output(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and initialize the codec, but do not write the header.
Definition: mux.c:486
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:506
ff_const59 AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:51
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1274
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:1212
unsigned int av_codec_get_tag(const struct AVCodecTag *const *tags, enum AVCodecID id)
Get the codec tag for the given codec id id.
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
#define AV_DICT_APPEND
If the entry already exists, append to it.
Definition: dict.h:77
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
#define AV_DICT_DONT_OVERWRITE
Don't overwrite existing entries.
Definition: dict.h:76
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
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:147
#define AV_ERROR_MAX_STRING_SIZE
Definition: error.h:83
#define AVERROR_EXPERIMENTAL
Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it.
Definition: error.h:72
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
#define AVERROR_MUXER_NOT_FOUND
Muxer not found.
Definition: error.h:60
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
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
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
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:134
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
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
char * av_strndup(const char *s, size_t len)
Duplicate a substring of a string.
Definition: mem.c:265
AVMediaType
Definition: avutil.h:199
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
@ AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:275
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
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
char * av_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
char * av_strireplace(const char *str, const char *from, const char *to)
Locale-independent strings replace.
Definition: avstring.c:237
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
void ff_hls_write_playlist_version(AVIOContext *out, int version)
Definition: hlsplaylist.c:31
void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache, int target_duration, int64_t sequence, uint32_t playlist_type, int iframe_mode)
Definition: hlsplaylist.c:98
int ff_hls_write_file_entry(AVIOContext *out, int insert_discont, int byterange_mode, double duration, int round_duration, int64_t size, int64_t pos, const char *baseurl, const char *filename, double *prog_date_time, int64_t video_keyframe_size, int64_t video_keyframe_pos, int iframe_mode)
Definition: hlsplaylist.c:132
void ff_hls_write_init_file(AVIOContext *out, const char *filename, int byterange_mode, int64_t size, int64_t pos)
Definition: hlsplaylist.c:122
void ff_hls_write_audio_rendition(AVIOContext *out, const char *agroup, const char *filename, const char *language, int name_id, int is_default)
Definition: hlsplaylist.c:39
void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, int bandwidth, const char *filename, const char *agroup, const char *codecs, const char *ccgroup, const char *sgroup)
Definition: hlsplaylist.c:69
void ff_hls_write_end_list(AVIOContext *out)
Definition: hlsplaylist.c:189
@ PLAYLIST_TYPE_NONE
Definition: hlsplaylist.h:33
int ff_http_do_new_request(URLContext *h, const char *uri)
Send a new HTTP request, reusing the old connection.
Definition: http.c:392
cl_device_type type
const char * key
int i
Definition: input.c:407
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
const AVCodecTag ff_mp4_obj_type[]
Definition: isom.c:34
const AVCodecTag ff_codec_movaudio_tags[]
Definition: isom_tags.c:278
const AVCodecTag ff_codec_movvideo_tags[]
Definition: isom_tags.c:29
int ff_is_http_proto(char *filename)
Utility function to check if the file uses http or https protocol.
Definition: utils.c:5699
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt, AVFormatContext *src, int interleave)
Write a packet to another muxer than the one the user originally intended.
Definition: mux.c:1328
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:3314
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5692
common internal API header
int buffer_size_t
Definition: internal.h:306
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
uint32_t tag
Definition: movenc.c:1611
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:1095
const char data[16]
Definition: mxf.c:142
AVOptions.
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:278
miscellaneous OS support macros and functions.
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
misc parsing utilities
SegmentType
Definition: pgssubdec.c:41
mfxU16 profile
Definition: qsvenc.c:45
Utilties for rational number calculation.
static char buffer[20]
Definition: seek.c:32
formats
Definition: signature.h:48
#define snprintf
Definition: snprintf.h:34
unsigned int pos
Definition: spdifenc.c:412
uint8_t monochrome
Definition: av1.h:33
uint8_t color_description_present_flag
Definition: av1.h:37
uint8_t chroma_sample_position
Definition: av1.h:36
uint8_t color_range
Definition: av1.h:41
uint8_t transfer_characteristics
Definition: av1.h:39
uint8_t level
Definition: av1.h:30
uint8_t color_primaries
Definition: av1.h:38
uint8_t chroma_subsampling_x
Definition: av1.h:34
uint8_t profile
Definition: av1.h:29
uint8_t chroma_subsampling_y
Definition: av1.h:35
uint8_t matrix_coefficients
Definition: av1.h:40
uint8_t bitdepth
Definition: av1.h:32
uint8_t tier
Definition: av1.h:31
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
main external API structure.
Definition: avcodec.h:536
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
int width
Video only.
Definition: codec_par.h:126
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int video_delay
Video only.
Definition: codec_par.h:155
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
char * value
Definition: dict.h:83
Format I/O context.
Definition: avformat.h:1232
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1577
AVIOContext * pb
I/O context.
Definition: avformat.h:1274
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1363
int strict_std_compliance
Allow non-standard and experimental extension.
Definition: avformat.h:1542
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1512
char * url
input or output URL.
Definition: avformat.h:1328
void * opaque
User data.
Definition: avformat.h:1752
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1251
void(* io_close)(struct AVFormatContext *s, AVIOContext *pb)
A callback for closing the streams opened with AVFormatContext.io_open().
Definition: avformat.h:1834
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
Definition: avformat.h:1828
Bytestream IO Context.
Definition: avio.h:161
AVOption.
Definition: opt.h:248
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:630
const char * name
Definition: avformat.h:491
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:389
This structure supplies correlation between a packet timestamp and a wall clock production time.
Definition: avcodec.h:503
int64_t wallclock
A UTC timestamp, in microseconds, since Unix epoch (e.g, av_gettime()).
Definition: avcodec.h:507
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
AVBSFContext * bsfc
bitstream filter to run on stream
Definition: internal.h:170
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:935
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1113
int trick_idx
Definition: dashenc.c:96
AVDictionary * metadata
Definition: dashenc.c:89
AVRational min_frame_rate
Definition: dashenc.c:90
int64_t frag_duration
Definition: dashenc.c:86
int64_t seg_duration
Definition: dashenc.c:85
enum AVMediaType media_type
Definition: dashenc.c:88
char * descriptor
Definition: dashenc.c:84
int nb_streams
Definition: dashenc.c:94
int64_t max_frag_duration
Definition: dashenc.c:92
int max_height
Definition: dashenc.c:93
int ambiguous_frame_rate
Definition: dashenc.c:91
AVRational max_frame_rate
Definition: dashenc.c:90
AVRational par
Definition: dashenc.c:95
int max_width
Definition: dashenc.c:93
int frag_type
Definition: dashenc.c:87
const char * utc_timing_url
Definition: dashenc.c:170
int remove_at_exit
Definition: dashenc.c:155
int global_sidx
Definition: dashenc.c:184
const char * single_file_name
Definition: dashenc.c:167
time_t start_time_s
Definition: dashenc.c:164
int64_t max_segment_duration
Definition: dashenc.c:195
int64_t target_latency
Definition: dashenc.c:197
int64_t last_duration
Definition: dashenc.c:161
int target_latency_refid
Definition: dashenc.c:198
char * adaptation_sets
Definition: dashenc.c:145
AVRational min_playback_rate
Definition: dashenc.c:199
int lhls
Definition: dashenc.c:187
const char * user_agent
Definition: dashenc.c:172
int master_publish_rate
Definition: dashenc.c:189
int profile
Definition: dashenc.c:196
AVDictionary * http_opts
Definition: dashenc.c:173
const char * init_seg_name
Definition: dashenc.c:168
int64_t presentation_time_offset
Definition: dashenc.c:165
int64_t total_duration
Definition: dashenc.c:162
int64_t frag_duration
Definition: dashenc.c:154
int index_correction
Definition: dashenc.c:182
AVIOContext * mpd_out
Definition: dashenc.c:178
int64_t seg_duration
Definition: dashenc.c:153
int window_size
Definition: dashenc.c:148
AdaptationSet * as
Definition: dashenc.c:146
int write_prft
Definition: dashenc.c:193
AVIOContext * m3u8_out
Definition: dashenc.c:179
int has_video
Definition: dashenc.c:160
int nr_of_streams_flushed
Definition: dashenc.c:191
int streaming
Definition: dashenc.c:180
int master_playlist_created
Definition: dashenc.c:177
const char * media_seg_name
Definition: dashenc.c:169
int nr_of_streams_to_flush
Definition: dashenc.c:190
OutputStream * streams
Definition: dashenc.c:159
SegmentType segment_type_option
Definition: dashenc.c:185
int64_t timeout
Definition: dashenc.c:181
int64_t update_period
Definition: dashenc.c:201
int min_seg_duration
Definition: dashenc.c:151
int ldash
Definition: dashenc.c:188
int hls_playlist
Definition: dashenc.c:174
AVDictionary * format_options
Definition: dashenc.c:183
int use_template
Definition: dashenc.c:156
int frag_type
Definition: dashenc.c:192
int ignore_io_errors
Definition: dashenc.c:186
int extra_window_size
Definition: dashenc.c:149
const char * method
Definition: dashenc.c:171
AVRational max_playback_rate
Definition: dashenc.c:200
const char * hls_master_name
Definition: dashenc.c:175
uint64_t availability_start_time
Definition: dashdec.c:135
int http_persistent
Definition: dashenc.c:176
char dirname[1024]
Definition: dashenc.c:166
int nb_as
Definition: dashenc.c:147
int64_t max_gop_size
Definition: dashenc.c:194
int single_file
Definition: dashenc.c:158
int use_timeline
Definition: dashenc.c:157
AVCodecParserContext * parser
Definition: dashenc.c:103
const char * init_seg_name
Definition: dashenc.c:123
int64_t last_duration
Definition: dashenc.c:112
const char * media_seg_name
Definition: dashenc.c:124
int total_pkt_size
Definition: dashenc.c:134
char codec_str[100]
Definition: dashenc.c:126
int64_t last_pts
Definition: dashenc.c:115
int64_t gop_size
Definition: dashenc.c:138
int packets_written
Definition: dashenc.c:105
int64_t frag_duration
Definition: dashenc.c:111
int nb_segments
Definition: dashenc.c:109
char full_path[1024]
Definition: dashenc.c:129
int64_t max_pts
Definition: dashenc.c:114
char filename[1024]
Definition: dashenc.c:128
int coding_dependency
Definition: dashenc.c:140
int first_segment_bit_rate
Definition: dashenc.c:118
AVFormatContext * ctx
Definition: dashenc.c:100
char producer_reference_time_str[100]
Definition: dashenc.c:133
AVRational sar
Definition: dashenc.c:139
int written_len
Definition: dashenc.c:127
int64_t init_start_pos
Definition: dashenc.c:107
int frag_type
Definition: dashenc.c:137
AVIOContext * out
Definition: dashenc.c:102
char temp_path[1024]
Definition: dashenc.c:130
int as_idx
Definition: dashenc.c:101
const char * format_name
Definition: dashenc.c:120
int64_t start_pts
Definition: dashenc.c:114
const char * extension_name
Definition: dashenc.c:121
double availability_time_offset
Definition: dashenc.c:131
int bit_rate
Definition: dashenc.c:117
char initfile[1024]
Definition: dashenc.c:106
int64_t total_pkt_duration
Definition: dashenc.c:135
const char * single_file_name
Definition: dashenc.c:122
AVCodecContext * parser_avctx
Definition: dashenc.c:104
int last_flags
Definition: dashenc.c:116
int64_t seg_duration
Definition: dashenc.c:110
int64_t pos
Definition: dashenc.c:107
int segments_size
Definition: dashenc.c:109
AVProducerReferenceTime producer_reference_time
Definition: dashenc.c:132
int64_t first_pts
Definition: ffmpeg.h:465
int segment_index
Definition: dashenc.c:109
int64_t last_dts
Definition: dashenc.c:115
SegmentType segment_type
Definition: dashenc.c:119
int muxer_overhead
Definition: dashenc.c:136
Segment ** segments
Definition: dashenc.c:113
int ctx_inited
Definition: dashenc.c:101
int init_range_length
Definition: dashenc.c:108
double prog_date_time
Definition: dashenc.c:77
int64_t duration
Definition: dashenc.c:78
int64_t time
Definition: dashenc.c:76
char file[1024]
Definition: dashenc.c:73
int index_length
Definition: dashenc.c:75
int range_length
Definition: dashenc.c:75
int64_t start_pos
Definition: dashenc.c:74
int n
Definition: dashenc.c:79
Definition: url.h:38
Definition: vpcc.h:35
int profile
Definition: vpcc.h:36
int bitdepth
Definition: vpcc.h:38
int level
Definition: vpcc.h:37
const char * str
Definition: dashenc.c:206
const char * str
Definition: dashenc.c:218
SegmentType segment_type
Definition: dashenc.c:217
uint8_t level
Definition: svq3.c:206
#define lrint
Definition: tablegen.h:53
#define av_free(p)
#define av_freep(p)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
int64_t duration
Definition: movenc.c:64
AVPacket * pkt
Definition: movenc.c:59
AVFormatContext * ctx
Definition: movenc.c:48
AVDictionary * opts
Definition: movenc.c:50
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
#define gmtime_r
Definition: time_internal.h:34
int size
unbuffered private I/O API
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
static AVStream * ost
if(ret< 0)
Definition: vf_mcdeint.c:282
int len
int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, VPCC *vpcc)
Definition: vpcc.c:116
internal header for VPx codec configuration utilities.
static double c[64]