FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/dashenc.c
Date: 2026-09-27 22:20:00
Exec Total Coverage
Lines: 665 1347 49.4%
Functions: 29 38 76.3%
Branches: 307 1067 28.8%
Line Branch Exec Source
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 #include "config_components.h"
25 #include <time.h>
26 #if HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29
30 #include "libavutil/avassert.h"
31 #include "libavutil/avutil.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/intreadwrite.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/mem.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/rational.h"
40 #include "libavutil/time.h"
41 #include "libavutil/time_internal.h"
42
43 #include "libavcodec/avcodec.h"
44
45 #include "avformat.h"
46 #include "avio_internal.h"
47 #include "hlsplaylist.h"
48 #if CONFIG_HTTP_PROTOCOL
49 #include "http.h"
50 #endif
51 #include "internal.h"
52 #include "mux.h"
53 #include "os_support.h"
54 #include "url.h"
55 #include "dash.h"
56
57 typedef enum {
58 SEGMENT_TYPE_AUTO = 0,
59 SEGMENT_TYPE_MP4,
60 SEGMENT_TYPE_WEBM,
61 SEGMENT_TYPE_NB
62 } SegmentType;
63
64 enum {
65 FRAG_TYPE_NONE = 0,
66 FRAG_TYPE_EVERY_FRAME,
67 FRAG_TYPE_DURATION,
68 FRAG_TYPE_PFRAMES,
69 FRAG_TYPE_NB
70 };
71
72 #define MPD_PROFILE_DASH 1
73 #define MPD_PROFILE_DVB 2
74 #define DASH_MAX_AVAILABILITY_START_TIME_MS (INT64_MAX / 1000)
75 #define DASH_MAX_SUGGESTED_PRESENTATION_DELAY ((int64_t)INT_MAX * AV_TIME_BASE + AV_TIME_BASE - 1)
76
77 typedef struct Segment {
78 char file[1024];
79 int64_t start_pos;
80 int range_length, index_length;
81 int64_t time;
82 double prog_date_time;
83 int64_t duration;
84 int n;
85 } Segment;
86
87 typedef struct AdaptationSet {
88 int id;
89 char *descriptor;
90 int64_t seg_duration;
91 int64_t frag_duration;
92 int frag_type;
93 enum AVMediaType media_type;
94 AVDictionary *metadata;
95 AVRational min_frame_rate, max_frame_rate;
96 int ambiguous_frame_rate;
97 int64_t max_frag_duration;
98 int max_width, max_height;
99 int nb_streams;
100 AVRational par;
101 int trick_idx;
102 } AdaptationSet;
103
104 typedef struct OutputStream {
105 AVFormatContext *ctx;
106 int ctx_inited, as_idx;
107 AVIOContext *out;
108 AVCodecParserContext *parser;
109 AVCodecContext *parser_avctx;
110 int packets_written;
111 char initfile[1024];
112 int64_t init_start_pos, pos;
113 int init_range_length;
114 int nb_segments, segments_size, segment_index;
115 int64_t seg_duration;
116 int64_t frag_duration;
117 int64_t last_duration;
118 Segment **segments;
119 int64_t first_pts, start_pts, max_pts;
120 int64_t last_dts, last_pts;
121 int last_flags;
122 int bit_rate;
123 int first_segment_bit_rate;
124 SegmentType segment_type; /* segment type selected for this particular stream */
125 const char *format_name;
126 const char *extension_name;
127 const char *single_file_name; /* file names selected for this particular stream */
128 const char *init_seg_name;
129 const char *media_seg_name;
130
131 char codec_str[100];
132 int written_len;
133 char filename[1024];
134 char full_path[1024];
135 char temp_path[1024];
136 double availability_time_offset;
137 AVProducerReferenceTime producer_reference_time;
138 char producer_reference_time_str[100];
139 int total_pkt_size;
140 int64_t total_pkt_duration;
141 int muxer_overhead;
142 int frag_type;
143 int64_t gop_size;
144 AVRational sar;
145 int coding_dependency;
146 } OutputStream;
147
148 typedef struct DASHContext {
149 const AVClass *class; /* Class for private options. */
150 char *adaptation_sets;
151 AdaptationSet *as;
152 int nb_as;
153 int window_size;
154 int extra_window_size;
155 int64_t seg_duration;
156 int64_t frag_duration;
157 int remove_at_exit;
158 int use_template;
159 int use_timeline;
160 int single_file;
161 OutputStream *streams;
162 int has_video;
163 int64_t last_duration;
164 int64_t total_duration;
165 char availability_start_time[100];
166 time_t start_time_s;
167 int64_t presentation_time_offset;
168 char dirname[1024];
169 const char *single_file_name; /* file names as specified in options */
170 const char *init_seg_name;
171 const char *media_seg_name;
172 const char *utc_timing_url;
173 const char *method;
174 const char *user_agent;
175 AVDictionary *http_opts;
176 int hls_playlist;
177 const char *hls_master_name;
178 int http_persistent;
179 int master_playlist_created;
180 AVIOContext *mpd_out;
181 AVIOContext *m3u8_out;
182 AVIOContext *http_delete;
183 int streaming;
184 int64_t timeout;
185 int index_correction;
186 AVDictionary *format_options;
187 int global_sidx;
188 SegmentType segment_type_option; /* segment type as specified in options */
189 int ignore_io_errors;
190 int lhls;
191 int ldash;
192 int master_publish_rate;
193 int nr_of_streams_to_flush;
194 int nr_of_streams_flushed;
195 int frag_type;
196 int write_prft;
197 int64_t max_gop_size;
198 int64_t max_segment_duration;
199 int profile;
200 int64_t target_latency;
201 int target_latency_refid;
202 AVRational min_playback_rate;
203 AVRational max_playback_rate;
204 int64_t update_period;
205 int64_t availability_start_time_ms;
206 int64_t suggested_presentation_delay;
207 } DASHContext;
208
209 3 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
210 AVDictionary **options) {
211 3 DASHContext *c = s->priv_data;
212
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 3 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
213 3 int err = AVERROR_MUXER_NOT_FOUND;
214
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 3 if (!*pb || !http_base_proto || !c->http_persistent) {
215 3 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
216 #if CONFIG_HTTP_PROTOCOL
217 } else {
218 ✗ URLContext *http_url_context = ffio_geturlcontext(*pb);
219 ✗ av_assert0(http_url_context);
220 ✗ err = ff_http_do_new_request(http_url_context, filename);
221 ✗ if (err < 0)
222 ✗ ff_format_io_close(s, pb);
223 #endif
224 }
225 3 return err;
226 }
227
228 4 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
229 4 DASHContext *c = s->priv_data;
230
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 4 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
231
232
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 4 if (!*pb)
233 ✗ return;
234
235
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 4 if (!http_base_proto || !c->http_persistent) {
236 4 ff_format_io_close(s, pb);
237 #if CONFIG_HTTP_PROTOCOL
238 } else {
239 ✗ URLContext *http_url_context = ffio_geturlcontext(*pb);
240 ✗ av_assert0(http_url_context);
241 ✗ avio_flush(*pb);
242 ✗ ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
243 #endif
244 }
245 }
246
247 1 static const char *get_format_str(SegmentType segment_type)
248 {
249
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 1 switch (segment_type) {
250 1 case SEGMENT_TYPE_MP4: return "mp4";
251 ✗ case SEGMENT_TYPE_WEBM: return "webm";
252 }
253 ✗ return NULL;
254 }
255
256 1 static const char *get_extension_str(SegmentType type, int single_file)
257 {
258
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 1 switch (type) {
259
260
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 1 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
261 ✗ case SEGMENT_TYPE_WEBM: return "webm";
262 ✗ default: return NULL;
263 }
264 }
265
266 ✗ static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
267 ✗ DASHContext *c = s->priv_data;
268 ✗ av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
269 ✗ "Unable to open %s for writing: %s\n", url, av_err2str(err));
270 ✗ return c->ignore_io_errors ? 0 : err;
271 }
272
273 1 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
274 {
275
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 1 if (segment_type == SEGMENT_TYPE_AUTO) {
276
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 1 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
277
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 1 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
278 ✗ segment_type = SEGMENT_TYPE_WEBM;
279 } else {
280 1 segment_type = SEGMENT_TYPE_MP4;
281 }
282 }
283
284 1 return segment_type;
285 }
286
287 1 static int init_segment_types(AVFormatContext *s)
288 {
289 1 DASHContext *c = s->priv_data;
290 1 int has_mp4_streams = 0;
291
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 2 for (int i = 0; i < s->nb_streams; ++i) {
292 1 OutputStream *os = &c->streams[i];
293 1 SegmentType segment_type = select_segment_type(
294 1 c->segment_type_option, s->streams[i]->codecpar->codec_id);
295 1 os->segment_type = segment_type;
296 1 os->format_name = get_format_str(segment_type);
297
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 1 if (!os->format_name) {
298 ✗ av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
299 ✗ return AVERROR_MUXER_NOT_FOUND;
300 }
301 1 os->extension_name = get_extension_str(segment_type, c->single_file);
302
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 1 if (!os->extension_name) {
303 ✗ av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
304 ✗ return AVERROR_MUXER_NOT_FOUND;
305 }
306
307 1 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
308 }
309
310
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 1 if (c->hls_playlist && !has_mp4_streams) {
311 ✗ av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
312 ✗ c->hls_playlist = 0;
313 }
314
315 1 return 0;
316 }
317
318 2 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
319 {
320 uint8_t *buffer;
321
322
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 2 if (!os->ctx->pb) {
323 ✗ return AVERROR(EINVAL);
324 }
325
326 // flush
327 2 av_write_frame(os->ctx, NULL);
328 2 avio_flush(os->ctx->pb);
329
330
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 2 if (!c->single_file) {
331 // write out to file
332 2 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
333 2 os->ctx->pb = NULL;
334
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 2 if (os->out)
335 2 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
336 2 os->written_len = 0;
337 2 av_free(buffer);
338
339 // re-open buffer
340 2 return avio_open_dyn_buf(&os->ctx->pb);
341 } else {
342 ✗ *range_length = avio_tell(os->ctx->pb) - os->pos;
343 ✗ return 0;
344 }
345 }
346
347 4 static void set_http_options(AVDictionary **options, DASHContext *c)
348 {
349
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 4 if (c->method)
350 ✗ av_dict_set(options, "method", c->method, 0);
351 4 av_dict_copy(options, c->http_opts, 0);
352
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 4 if (c->user_agent)
353 ✗ av_dict_set(options, "user_agent", c->user_agent, 0);
354
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 4 if (c->http_persistent)
355 ✗ av_dict_set_int(options, "multiple_requests", 1, 0);
356
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 4 if (c->timeout >= 0)
357 ✗ av_dict_set_int(options, "timeout", c->timeout, 0);
358 4 }
359
360 ✗ static void get_hls_playlist_name(char *playlist_name, int string_size,
361 const char *base_url, int id) {
362 ✗ if (base_url)
363 ✗ snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
364 else
365 ✗ snprintf(playlist_name, string_size, "media_%d.m3u8", id);
366 ✗ }
367
368 4 static void get_start_index_number(OutputStream *os, DASHContext *c,
369 int *start_index, int *start_number) {
370 4 *start_index = 0;
371 4 *start_number = 1;
372
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 4 if (c->window_size) {
373 4 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
374 4 *start_number = FFMAX(os->segment_index - c->window_size, 1);
375 }
376 4 }
377
378 2 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
379 int representation_id, int final,
380 char *prefetch_url) {
381 2 DASHContext *c = s->priv_data;
382 2 int timescale = os->ctx->streams[0]->time_base.den;
383 char temp_filename_hls[1024];
384 char filename_hls[1024];
385 2 AVDictionary *http_opts = NULL;
386 2 int target_duration = 0;
387 2 int ret = 0;
388 2 const char *proto = avio_find_protocol_name(c->dirname);
389
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 2 int use_rename = proto && !strcmp(proto, "file");
390 int i, start_index, start_number;
391 2 double prog_date_time = 0;
392
393 2 get_start_index_number(os, c, &start_index, &start_number);
394
395
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 2 if (!c->hls_playlist || start_index >= os->nb_segments ||
396 ✗ os->segment_type != SEGMENT_TYPE_MP4)
397 2 return;
398
399 ✗ get_hls_playlist_name(filename_hls, sizeof(filename_hls),
400 ✗ c->dirname, representation_id);
401
402 ✗ snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
403
404 ✗ set_http_options(&http_opts, c);
405 ✗ ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
406 ✗ av_dict_free(&http_opts);
407 ✗ if (ret < 0) {
408 ✗ handle_io_open_error(s, ret, temp_filename_hls);
409 ✗ return;
410 }
411 ✗ for (i = start_index; i < os->nb_segments; i++) {
412 ✗ Segment *seg = os->segments[i];
413 ✗ double duration = (double) seg->duration / timescale;
414 ✗ if (target_duration <= duration)
415 ✗ target_duration = lrint(duration);
416 }
417
418 ✗ ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
419 start_number, PLAYLIST_TYPE_NONE, 0);
420
421 ✗ ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
422 ✗ os->init_range_length, os->init_start_pos);
423
424 ✗ for (i = start_index; i < os->nb_segments; i++) {
425 ✗ Segment *seg = os->segments[i];
426
427 ✗ if (fabs(prog_date_time) < 1e-7) {
428 ✗ if (os->nb_segments == 1)
429 ✗ prog_date_time = c->start_time_s;
430 else
431 ✗ prog_date_time = seg->prog_date_time;
432 }
433 ✗ seg->prog_date_time = prog_date_time;
434
435 ✗ ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
436 ✗ (double) seg->duration / timescale, 0,
437 ✗ seg->range_length, seg->start_pos, NULL,
438 ✗ c->single_file ? os->initfile : seg->file,
439 &prog_date_time, 0);
440 ✗ if (ret < 0) {
441 ✗ av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
442 }
443 }
444
445 ✗ if (prefetch_url)
446 ✗ avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
447
448 ✗ if (final)
449 ✗ ff_hls_write_end_list(c->m3u8_out);
450
451 ✗ dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
452
453 ✗ if (use_rename)
454 ✗ ff_rename(temp_filename_hls, filename_hls, os->ctx);
455 }
456
457 1 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
458 {
459 1 DASHContext *c = s->priv_data;
460 int ret, range_length;
461
462 1 ret = flush_dynbuf(c, os, &range_length);
463
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 1 if (ret < 0)
464 ✗ return ret;
465
466 1 os->pos = os->init_range_length = range_length;
467
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 1 if (!c->single_file) {
468 char filename[1024];
469 1 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
470 1 dashenc_io_close(s, &os->out, filename);
471 }
472 1 return 0;
473 }
474
475 1 static void dash_free(AVFormatContext *s)
476 {
477 1 DASHContext *c = s->priv_data;
478 int i, j;
479
480
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 1 if (c->as) {
481
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 2 for (i = 0; i < c->nb_as; i++) {
482 1 av_dict_free(&c->as[i].metadata);
483 1 av_freep(&c->as[i].descriptor);
484 }
485 1 av_freep(&c->as);
486 1 c->nb_as = 0;
487 }
488
489
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 1 if (!c->streams)
490 ✗ return;
491
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 2 for (i = 0; i < s->nb_streams; i++) {
492 1 OutputStream *os = &c->streams[i];
493
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 1 if (os->ctx && os->ctx->pb) {
494
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 1 if (!c->single_file)
495 1 ffio_free_dyn_buf(&os->ctx->pb);
496 else
497 ✗ ff_format_io_close(s, &os->ctx->pb);
498 }
499 1 ff_format_io_close(s, &os->out);
500 1 avformat_free_context(os->ctx);
501 1 avcodec_free_context(&os->parser_avctx);
502 1 av_parser_close(os->parser);
503
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 2 for (j = 0; j < os->nb_segments; j++)
504 1 av_free(os->segments[j]);
505 1 av_free(os->segments);
506 1 av_freep(&os->single_file_name);
507 1 av_freep(&os->init_seg_name);
508 1 av_freep(&os->media_seg_name);
509 }
510 1 av_freep(&c->streams);
511
512 1 ff_format_io_close(s, &c->mpd_out);
513 1 ff_format_io_close(s, &c->m3u8_out);
514 1 ff_format_io_close(s, &c->http_delete);
515 }
516
517 2 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
518 int representation_id, int final)
519 {
520 2 DASHContext *c = s->priv_data;
521 int i, start_index, start_number;
522 2 get_start_index_number(os, c, &start_index, &start_number);
523
524
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 2 if (c->use_template) {
525
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 2 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
526 2 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
527
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 2 if (!c->use_timeline) {
528 ✗ avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
529 ✗ if (c->streaming && os->availability_time_offset)
530 ✗ avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
531 os->availability_time_offset);
532 }
533
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 2 if (c->streaming && os->availability_time_offset && !final)
534 1 avio_printf(out, "availabilityTimeComplete=\"false\" ");
535
536
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 2 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
537
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 2 if (c->presentation_time_offset)
538 ✗ avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
539 2 avio_printf(out, ">\n");
540
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 2 if (c->use_timeline) {
541 2 int64_t cur_time = 0;
542 2 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
543
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 3 for (i = start_index; i < os->nb_segments; ) {
544 1 Segment *seg = os->segments[i];
545 1 int repeat = 0;
546 1 avio_printf(out, "\t\t\t\t\t\t<S ");
547
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 1 if (i == start_index || seg->time != cur_time) {
548 1 cur_time = seg->time;
549 1 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
550 }
551 1 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
552 1 while (i + repeat + 1 < os->nb_segments &&
553
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 1 os->segments[i + repeat + 1]->duration == seg->duration &&
554 ✗ os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
555 ✗ repeat++;
556
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 1 if (repeat > 0)
557 ✗ avio_printf(out, "r=\"%d\" ", repeat);
558 1 avio_printf(out, "/>\n");
559 1 i += 1 + repeat;
560 1 cur_time += (1 + repeat) * seg->duration;
561 }
562 2 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
563 }
564 2 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
565 ✗ } else if (c->single_file) {
566 ✗ avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
567 ✗ 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);
568 ✗ 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);
569 ✗ for (i = start_index; i < os->nb_segments; i++) {
570 ✗ Segment *seg = os->segments[i];
571 ✗ avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
572 ✗ if (seg->index_length)
573 ✗ avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
574 ✗ avio_printf(out, "/>\n");
575 }
576 ✗ avio_printf(out, "\t\t\t\t</SegmentList>\n");
577 } else {
578 ✗ 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);
579 ✗ avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
580 ✗ for (i = start_index; i < os->nb_segments; i++) {
581 ✗ Segment *seg = os->segments[i];
582 ✗ avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
583 }
584 ✗ avio_printf(out, "\t\t\t\t</SegmentList>\n");
585 }
586
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 2 if (!c->lhls || final) {
587 2 write_hls_media_playlist(os, s, representation_id, final, NULL);
588 }
589
590 2 }
591
592 ✗ static char *xmlescape(const char *str) {
593 ✗ int outlen = strlen(str)*3/2 + 6;
594 ✗ char *out = av_realloc(NULL, outlen + 1);
595 ✗ int pos = 0;
596 ✗ if (!out)
597 ✗ return NULL;
598 ✗ for (; *str; str++) {
599 ✗ if (pos + 6 > outlen) {
600 char *tmp;
601 ✗ outlen = 2 * outlen + 6;
602 ✗ tmp = av_realloc(out, outlen + 1);
603 ✗ if (!tmp) {
604 ✗ av_free(out);
605 ✗ return NULL;
606 }
607 ✗ out = tmp;
608 }
609 ✗ if (*str == '&') {
610 ✗ memcpy(&out[pos], "&amp;", 5);
611 ✗ pos += 5;
612 ✗ } else if (*str == '<') {
613 ✗ memcpy(&out[pos], "&lt;", 4);
614 ✗ pos += 4;
615 ✗ } else if (*str == '>') {
616 ✗ memcpy(&out[pos], "&gt;", 4);
617 ✗ pos += 4;
618 ✗ } else if (*str == '\'') {
619 ✗ memcpy(&out[pos], "&apos;", 6);
620 ✗ pos += 6;
621 ✗ } else if (*str == '\"') {
622 ✗ memcpy(&out[pos], "&quot;", 6);
623 ✗ pos += 6;
624 } else {
625 ✗ out[pos++] = *str;
626 }
627 }
628 ✗ out[pos] = '\0';
629 ✗ return out;
630 }
631
632 7 static void write_time(AVIOContext *out, int64_t time)
633 {
634 7 int seconds = time / AV_TIME_BASE;
635 7 int fractions = time % AV_TIME_BASE;
636 7 int minutes = seconds / 60;
637 7 int hours = minutes / 60;
638 7 seconds %= 60;
639 7 minutes %= 60;
640 7 avio_printf(out, "PT");
641
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 7 if (hours)
642 ✗ avio_printf(out, "%dH", hours);
643
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 7 if (hours || minutes)
644 ✗ avio_printf(out, "%dM", minutes);
645 7 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
646 7 }
647
648 2 static void format_date(char *buf, int size, int64_t time_us)
649 {
650 struct tm *ptm, tmbuf;
651 2 int64_t time_ms = time_us / 1000;
652 2 const time_t time_s = time_ms / 1000;
653 2 int millisec = time_ms - (time_s * 1000);
654 2 ptm = gmtime_r(&time_s, &tmbuf);
655
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 2 if (ptm) {
656 int len;
657
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 2 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
658 ✗ buf[0] = '\0';
659 ✗ return;
660 }
661 2 len = strlen(buf);
662 2 snprintf(buf + len, size - len, ".%03dZ", millisec);
663 }
664 }
665
666 2 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
667 int final)
668 {
669 2 DASHContext *c = s->priv_data;
670 2 AdaptationSet *as = &c->as[as_index];
671 AVDictionaryEntry *lang, *role;
672 int i;
673
674 2 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
675
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 2 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
676
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 2 if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
677 ✗ avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
678
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 2 else if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && !av_cmp_q(as->min_frame_rate, as->max_frame_rate))
679 2 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
680
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 2 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
681 2 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
682 2 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
683 }
684 2 lang = av_dict_get(as->metadata, "language", NULL, 0);
685
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 2 if (lang)
686 ✗ avio_printf(out, " lang=\"%s\"", lang->value);
687 2 avio_printf(out, ">\n");
688
689
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 2 if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
690 ✗ avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
691
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 2 if (as->trick_idx >= 0)
692 ✗ avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
693 2 role = av_dict_get(as->metadata, "role", NULL, 0);
694
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 2 if (role)
695 ✗ avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
696
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 2 if (as->descriptor)
697 ✗ avio_printf(out, "\t\t\t%s\n", as->descriptor);
698
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 4 for (i = 0; i < s->nb_streams; i++) {
699 2 AVStream *st = s->streams[i];
700 2 OutputStream *os = &c->streams[i];
701 2 char bandwidth_str[64] = {'\0'};
702
703
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 2 if (os->as_idx - 1 != as_index)
704 ✗ continue;
705
706
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 2 if (os->bit_rate > 0)
707 2 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->bit_rate);
708 ✗ else if (final) {
709 ✗ int average_bit_rate = 0;
710 ✗ if (c->total_duration > 0)
711 ✗ average_bit_rate = os->pos * 8 * AV_TIME_BASE / c->total_duration;
712 ✗ snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
713 ✗ } else if (os->first_segment_bit_rate > 0)
714 ✗ snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
715
716
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 2 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
717 2 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
718 2 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
719
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 2 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
720 ✗ avio_printf(out, " scanType=\"unknown\"");
721
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 2 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
722 ✗ avio_printf(out, " scanType=\"interlaced\"");
723 2 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
724
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 2 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
725 ✗ avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
726
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 2 if (as->trick_idx >= 0) {
727 ✗ AdaptationSet *tas = &c->as[as->trick_idx];
728 ✗ if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
729 ✗ avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
730 }
731
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 2 if (!os->coding_dependency)
732 ✗ avio_printf(out, " codingDependency=\"false\"");
733 2 avio_printf(out, ">\n");
734 } else {
735 ✗ avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
736 ✗ i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
737 ✗ avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
738 ✗ s->streams[i]->codecpar->ch_layout.nb_channels);
739 }
740
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 2 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
741 ✗ avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
742 ✗ i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
743 ✗ avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
744 ✗ avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
745 }
746
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 2 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
747 ✗ (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
748 ✗ avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
749 2 output_segment_list(os, out, s, i, final);
750 2 avio_printf(out, "\t\t\t</Representation>\n");
751 }
752 2 avio_printf(out, "\t\t</AdaptationSet>\n");
753
754 2 return 0;
755 }
756
757 1 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
758 {
759 1 DASHContext *c = s->priv_data;
760 void *mem;
761
762
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 1 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
763 ✗ av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
764 ✗ return AVERROR(EINVAL);
765 }
766 1 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
767
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 1 if (!mem)
768 ✗ return AVERROR(ENOMEM);
769 1 c->as = mem;
770 1 ++c->nb_as;
771
772 1 *as = &c->as[c->nb_as - 1];
773 1 memset(*as, 0, sizeof(**as));
774 1 (*as)->media_type = type;
775 1 (*as)->frag_type = -1;
776 1 (*as)->trick_idx = -1;
777
778 1 return 0;
779 }
780
781 ✗ static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
782 {
783 ✗ DASHContext *c = s->priv_data;
784 ✗ AdaptationSet *as = &c->as[as_idx - 1];
785 ✗ OutputStream *os = &c->streams[i];
786
787 ✗ if (as->media_type != s->streams[i]->codecpar->codec_type) {
788 ✗ av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
789 ✗ return AVERROR(EINVAL);
790 ✗ } else if (os->as_idx) {
791 ✗ av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
792 ✗ return AVERROR(EINVAL);
793 }
794 ✗ if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
795 ✗ av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
796 ✗ return AVERROR(EINVAL);
797 }
798 ✗ os->as_idx = as_idx;
799 ✗ ++as->nb_streams;
800
801 ✗ return 0;
802 }
803
804 1 static int parse_adaptation_sets(AVFormatContext *s)
805 {
806 1 DASHContext *c = s->priv_data;
807 1 const char *p = c->adaptation_sets;
808 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
809 AdaptationSet *as;
810 int i, n, ret;
811
812 // default: one AdaptationSet for each stream
813
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 1 if (!p) {
814
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 2 for (i = 0; i < s->nb_streams; i++) {
815
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 1 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
816 ✗ return ret;
817 1 as->id = i;
818
819 1 c->streams[i].as_idx = c->nb_as;
820 1 ++as->nb_streams;
821 }
822 1 goto end;
823 }
824
825 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
826 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
827 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
828 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
829 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
830 // descriptor_str should be a self-closing xml tag.
831 // seg_duration and frag_duration have the same syntax as the global options of
832 // the same name, and the former have precedence over them if set.
833 ✗ state = new_set;
834 ✗ while (*p) {
835 ✗ if (*p == ' ') {
836 ✗ p++;
837 ✗ continue;
838 ✗ } else if (state == new_set && av_strstart(p, "id=", &p)) {
839 char id_str[10], *end_str;
840
841 ✗ n = strcspn(p, ",");
842 ✗ snprintf(id_str, sizeof(id_str), "%.*s", n, p);
843
844 ✗ i = strtol(id_str, &end_str, 10);
845 ✗ if (id_str == end_str || i < 0 || i > c->nb_as) {
846 ✗ av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
847 ✗ return AVERROR(EINVAL);
848 }
849
850 ✗ if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
851 ✗ return ret;
852 ✗ as->id = i;
853
854 ✗ p += n;
855 ✗ if (*p)
856 ✗ p++;
857 ✗ state = parse_default;
858 ✗ } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
859 ✗ state = parse_seg_duration;
860 ✗ } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
861 ✗ state = parse_frag_duration;
862 ✗ } else if (state == parse_seg_duration || state == parse_frag_duration) {
863 char str[32];
864 ✗ int64_t usecs = 0;
865
866 ✗ n = strcspn(p, ",");
867 ✗ snprintf(str, sizeof(str), "%.*s", n, p);
868 ✗ p += n;
869 ✗ if (*p)
870 ✗ p++;
871
872 ✗ ret = av_parse_time(&usecs, str, 1);
873 ✗ if (ret < 0) {
874 ✗ av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
875 ✗ return ret;
876 }
877
878 ✗ if (state == parse_seg_duration)
879 ✗ as->seg_duration = usecs;
880 else
881 ✗ as->frag_duration = usecs;
882 ✗ state = parse_default;
883 ✗ } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
884 char type_str[16];
885
886 ✗ n = strcspn(p, ",");
887 ✗ snprintf(type_str, sizeof(type_str), "%.*s", n, p);
888 ✗ p += n;
889 ✗ if (*p)
890 ✗ p++;
891
892 ✗ if (!strcmp(type_str, "duration"))
893 ✗ as->frag_type = FRAG_TYPE_DURATION;
894 ✗ else if (!strcmp(type_str, "pframes"))
895 ✗ as->frag_type = FRAG_TYPE_PFRAMES;
896 ✗ else if (!strcmp(type_str, "every_frame"))
897 ✗ as->frag_type = FRAG_TYPE_EVERY_FRAME;
898 ✗ else if (!strcmp(type_str, "none"))
899 ✗ as->frag_type = FRAG_TYPE_NONE;
900 else {
901 ✗ av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
902 ✗ return ret;
903 }
904 ✗ state = parse_default;
905 ✗ } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
906 ✗ n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
907 ✗ if (n < strlen(p)) {
908 ✗ as->descriptor = av_strndup(p, n);
909 } else {
910 ✗ av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
911 ✗ return AVERROR(EINVAL);
912 }
913 ✗ p += n;
914 ✗ if (*p)
915 ✗ p++;
916 ✗ state = parse_default;
917 ✗ } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
918 char trick_id_str[10], *end_str;
919
920 ✗ n = strcspn(p, ",");
921 ✗ snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
922 ✗ p += n;
923
924 ✗ as->trick_idx = strtol(trick_id_str, &end_str, 10);
925 ✗ if (trick_id_str == end_str || as->trick_idx < 0)
926 ✗ return AVERROR(EINVAL);
927
928 ✗ if (*p)
929 ✗ p++;
930 ✗ state = parse_default;
931 ✗ } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
932 ✗ state = parsing_streams;
933 ✗ } else if (state == parsing_streams) {
934 ✗ AdaptationSet *as = &c->as[c->nb_as - 1];
935 char idx_str[8], *end_str;
936
937 ✗ n = strcspn(p, " ,");
938 ✗ snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
939 ✗ p += n;
940
941 // if value is "a" or "v", map all streams of that type
942 ✗ if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
943 ✗ enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
944 ✗ av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
945
946 ✗ for (i = 0; i < s->nb_streams; i++) {
947 ✗ if (s->streams[i]->codecpar->codec_type != type)
948 ✗ continue;
949
950 ✗ as->media_type = s->streams[i]->codecpar->codec_type;
951
952 ✗ if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
953 ✗ return ret;
954 }
955 } else { // select single stream
956 ✗ i = strtol(idx_str, &end_str, 10);
957 ✗ if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
958 ✗ av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
959 ✗ return AVERROR(EINVAL);
960 }
961 ✗ av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
962
963 ✗ if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
964 ✗ as->media_type = s->streams[i]->codecpar->codec_type;
965 }
966
967 ✗ if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
968 ✗ return ret;
969 }
970
971 ✗ if (*p == ' ')
972 ✗ state = new_set;
973 ✗ if (*p)
974 ✗ p++;
975 } else {
976 ✗ return AVERROR(EINVAL);
977 }
978 }
979
980 ✗ end:
981 // check for unassigned streams
982
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 2 for (i = 0; i < s->nb_streams; i++) {
983 1 OutputStream *os = &c->streams[i];
984
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 1 if (!os->as_idx) {
985 ✗ av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
986 ✗ return AVERROR(EINVAL);
987 }
988 }
989
990 // check references for trick mode AdaptationSet
991
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 2 for (i = 0; i < c->nb_as; i++) {
992 1 as = &c->as[i];
993
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 1 if (as->trick_idx < 0)
994 1 continue;
995 ✗ for (n = 0; n < c->nb_as; n++) {
996 ✗ if (c->as[n].id == as->trick_idx)
997 ✗ break;
998 }
999 ✗ if (n >= c->nb_as) {
1000 ✗ av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1001 ✗ return AVERROR(EINVAL);
1002 }
1003 }
1004
1005 1 return 0;
1006 }
1007
1008 2 static int write_manifest(AVFormatContext *s, int final)
1009 {
1010 2 DASHContext *c = s->priv_data;
1011 AVIOContext *out;
1012 char temp_filename[1024];
1013 int ret, i;
1014 2 const char *proto = avio_find_protocol_name(s->url);
1015
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 2 int use_rename = proto && !strcmp(proto, "file");
1016 static unsigned int warned_non_file = 0;
1017 2 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1018 2 AVDictionary *opts = NULL;
1019
1020
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 2 if (!use_rename && !warned_non_file++)
1021 ✗ av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1022
1023
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 2 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1024 2 set_http_options(&opts, c);
1025 2 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1026 2 av_dict_free(&opts);
1027
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 2 if (ret < 0) {
1028 ✗ return handle_io_open_error(s, ret, temp_filename);
1029 }
1030 2 out = c->mpd_out;
1031 2 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1032 2 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1033 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1034 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1035 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1036 "\tprofiles=\"");
1037
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 2 if (c->profile & MPD_PROFILE_DASH)
1038
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 2 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1039
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 2 if (c->profile & MPD_PROFILE_DVB)
1040 ✗ avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1041
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 2 avio_printf(out, "\ttype=\"%s\"\n",
1042 final ? "static" : "dynamic");
1043
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 2 if (final) {
1044 1 avio_printf(out, "\tmediaPresentationDuration=\"");
1045 1 write_time(out, c->total_duration);
1046 1 avio_printf(out, "\"\n");
1047 } else {
1048 1 int64_t update_period = c->last_duration / AV_TIME_BASE;
1049 char now_str[100];
1050
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 1 if (c->use_template && !c->use_timeline)
1051 ✗ update_period = 500;
1052
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 1 if (c->update_period)
1053 ✗ update_period = c->update_period;
1054 1 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1055
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 1 if (!c->ldash) {
1056
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 1 if (c->suggested_presentation_delay) {
1057 1 avio_printf(out, "\tsuggestedPresentationDelay=\"");
1058 1 write_time(out, c->suggested_presentation_delay);
1059 1 avio_printf(out, "\"\n");
1060 } else
1061 ✗ avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1062 }
1063
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 1 if (c->availability_start_time[0])
1064 1 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1065 1 format_date(now_str, sizeof(now_str), av_gettime());
1066
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 1 if (now_str[0])
1067 1 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1068
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 1 if (c->window_size && c->use_template) {
1069 1 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1070 1 write_time(out, c->last_duration * c->window_size);
1071 1 avio_printf(out, "\"\n");
1072 }
1073 }
1074 2 avio_printf(out, "\tmaxSegmentDuration=\"");
1075 2 write_time(out, c->max_segment_duration);
1076 2 avio_printf(out, "\"\n");
1077 2 avio_printf(out, "\tminBufferTime=\"");
1078
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 2 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1079 2 avio_printf(out, "\">\n");
1080 2 avio_printf(out, "\t<ProgramInformation>\n");
1081
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 2 if (title) {
1082 ✗ char *escaped = xmlescape(title->value);
1083 ✗ avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1084 ✗ av_free(escaped);
1085 }
1086 2 avio_printf(out, "\t</ProgramInformation>\n");
1087
1088 2 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1089
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 2 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1090 ✗ avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1091 ✗ if (s->nb_streams > 1)
1092 ✗ avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1093 ✗ avio_printf(out, "/>\n");
1094 }
1095
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 4 if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1096 2 av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1097 ✗ avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1098 av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1099 2 avio_printf(out, "\t</ServiceDescription>\n");
1100
1101
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 2 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1102 ✗ OutputStream *os = &c->streams[0];
1103 ✗ int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1104 ✗ int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1105 ✗ avio_printf(out, "\t<Period id=\"0\" start=\"");
1106 ✗ write_time(out, start_time);
1107 ✗ avio_printf(out, "\">\n");
1108 } else {
1109 2 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1110 }
1111
1112
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 4 for (i = 0; i < c->nb_as; i++) {
1113
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 2 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1114 ✗ return ret;
1115 }
1116 2 avio_printf(out, "\t</Period>\n");
1117
1118
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 2 if (c->utc_timing_url)
1119 ✗ avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1120
1121 2 avio_printf(out, "</MPD>\n");
1122 2 avio_flush(out);
1123 2 dashenc_io_close(s, &c->mpd_out, temp_filename);
1124
1125
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 2 if (use_rename) {
1126
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 2 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1127 ✗ return ret;
1128 }
1129
1130
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 2 if (c->hls_playlist) {
1131 char filename_hls[1024];
1132
1133 // Publish master playlist only the configured rate
1134 ✗ if (c->master_playlist_created && (!c->master_publish_rate ||
1135 ✗ c->streams[0].segment_index % c->master_publish_rate))
1136 ✗ return 0;
1137
1138 ✗ if (*c->dirname)
1139 ✗ snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1140 else
1141 ✗ snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1142
1143 ✗ snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1144
1145 ✗ set_http_options(&opts, c);
1146 ✗ ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1147 ✗ av_dict_free(&opts);
1148 ✗ if (ret < 0) {
1149 ✗ return handle_io_open_error(s, ret, temp_filename);
1150 }
1151
1152 ✗ ff_hls_write_playlist_version(c->m3u8_out, 7);
1153
1154 ✗ if (c->has_video) {
1155 // treat audio streams as alternative renditions for video streams
1156 ✗ const char *audio_group = "A1";
1157 ✗ char audio_codec_str[128] = "\0";
1158 ✗ int is_default = 1;
1159 ✗ int max_audio_bitrate = 0;
1160
1161 ✗ for (i = 0; i < s->nb_streams; i++) {
1162 char playlist_file[64];
1163 ✗ AVStream *st = s->streams[i];
1164 ✗ OutputStream *os = &c->streams[i];
1165 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1166 ✗ continue;
1167 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1168 ✗ continue;
1169 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1170 ✗ ff_hls_write_audio_rendition(c->m3u8_out, audio_group,
1171 playlist_file, NULL, i, is_default,
1172 ✗ s->streams[i]->codecpar->ch_layout.nb_channels);
1173 ✗ max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1174 os->muxer_overhead, max_audio_bitrate);
1175 ✗ if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1176 ✗ if (strlen(audio_codec_str))
1177 ✗ av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1178 ✗ av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1179 }
1180 ✗ is_default = 0;
1181 }
1182
1183 ✗ for (i = 0; i < s->nb_streams; i++) {
1184 char playlist_file[64];
1185 char codec_str[128];
1186 ✗ AVStream *st = s->streams[i];
1187 ✗ OutputStream *os = &c->streams[i];
1188 ✗ const char *agroup = NULL;
1189 ✗ int stream_bitrate = os->muxer_overhead;
1190 ✗ if (os->bit_rate > 0)
1191 ✗ stream_bitrate += os->bit_rate;
1192 ✗ else if (final)
1193 ✗ stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1194 ✗ else if (os->first_segment_bit_rate > 0)
1195 ✗ stream_bitrate += os->first_segment_bit_rate;
1196 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1197 ✗ continue;
1198 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1199 ✗ continue;
1200 ✗ av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1201 ✗ if (max_audio_bitrate) {
1202 ✗ agroup = audio_group;
1203 ✗ stream_bitrate += max_audio_bitrate;
1204 ✗ av_strlcat(codec_str, ",", sizeof(codec_str));
1205 ✗ av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1206 }
1207 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1208 ✗ ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1209 playlist_file, agroup,
1210 codec_str, NULL, NULL);
1211 }
1212
1213 } else {
1214 // treat audio streams as separate renditions
1215
1216 ✗ for (i = 0; i < s->nb_streams; i++) {
1217 char playlist_file[64];
1218 char codec_str[128];
1219 ✗ AVStream *st = s->streams[i];
1220 ✗ OutputStream *os = &c->streams[i];
1221 ✗ int stream_bitrate = os->muxer_overhead;
1222 ✗ if (os->bit_rate > 0)
1223 ✗ stream_bitrate += os->bit_rate;
1224 ✗ else if (final)
1225 ✗ stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1226 ✗ else if (os->first_segment_bit_rate > 0)
1227 ✗ stream_bitrate += os->first_segment_bit_rate;
1228 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1229 ✗ continue;
1230 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1231 ✗ continue;
1232 ✗ av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1233 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1234 ✗ ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1235 playlist_file, NULL,
1236 codec_str, NULL, NULL);
1237 }
1238 }
1239
1240 ✗ dashenc_io_close(s, &c->m3u8_out, temp_filename);
1241 ✗ if (use_rename)
1242 ✗ if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1243 ✗ return ret;
1244 ✗ c->master_playlist_created = 1;
1245 }
1246
1247 2 return 0;
1248 }
1249
1250 2 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1251 {
1252 2 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1253
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 2 if (entry)
1254 ✗ av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1255 2 return 0;
1256 }
1257
1258 1 static int dash_init(AVFormatContext *s)
1259 {
1260 1 DASHContext *c = s->priv_data;
1261 1 int ret = 0, i;
1262 char *ptr;
1263 char basename[1024];
1264
1265 1 c->nr_of_streams_to_flush = 0;
1266
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 1 if (c->single_file_name)
1267 ✗ c->single_file = 1;
1268
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 1 if (c->single_file)
1269 ✗ c->use_template = 0;
1270
1271
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 1 if (!c->profile) {
1272 ✗ av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1273 ✗ return AVERROR(EINVAL);
1274 }
1275
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 1 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1276 ✗ av_log(s, AV_LOG_ERROR,
1277 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1278 ✗ return AVERROR_EXPERIMENTAL;
1279 }
1280
1281
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 1 if (c->lhls && !c->streaming) {
1282 ✗ av_log(s, AV_LOG_WARNING, "Enabling streaming as LHLS is enabled\n");
1283 ✗ c->streaming = 1;
1284 }
1285
1286
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 1 if (c->lhls && !c->hls_playlist) {
1287 ✗ av_log(s, AV_LOG_INFO, "Enabling hls_playlist as LHLS is enabled\n");
1288 ✗ c->hls_playlist = 1;
1289 }
1290
1291
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 1 if (c->ldash && !c->streaming) {
1292 ✗ av_log(s, AV_LOG_WARNING, "Enabling streaming as LDash is enabled\n");
1293 ✗ c->streaming = 1;
1294 }
1295
1296
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 1 if (c->target_latency && !c->streaming) {
1297 ✗ av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1298 ✗ c->target_latency = 0;
1299 }
1300
1301
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 1 if (c->global_sidx && !c->single_file) {
1302 ✗ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1303 ✗ c->global_sidx = 0;
1304 }
1305
1306
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 1 if (c->global_sidx && c->streaming) {
1307 ✗ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1308 ✗ c->global_sidx = 0;
1309 }
1310
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 1 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1311 1 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1312 1 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1313 }
1314
1315
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 1 if (c->write_prft < 0) {
1316 1 c->write_prft = c->ldash;
1317
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 1 if (c->ldash)
1318 ✗ av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1319 }
1320
1321
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 1 if (c->write_prft && !c->utc_timing_url) {
1322 ✗ av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1323 ✗ c->write_prft = 0;
1324 }
1325
1326
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 1 if (c->write_prft && !c->streaming) {
1327 ✗ av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1328 ✗ c->write_prft = 0;
1329 }
1330
1331
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 1 if (c->ldash && !c->write_prft) {
1332 ✗ av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1333 }
1334
1335
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 1 if (c->target_latency && !c->write_prft) {
1336 ✗ av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1337 ✗ c->target_latency = 0;
1338 }
1339
1340
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 1 if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1341 ✗ av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higher than the Maximum. Both will be ignored\n");
1342 ✗ c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1343 }
1344
1345 1 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1346 1 ptr = strrchr(c->dirname, '/');
1347
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 1 if (ptr) {
1348 1 av_strlcpy(basename, &ptr[1], sizeof(basename));
1349 1 ptr[1] = '\0';
1350 } else {
1351 ✗ c->dirname[0] = '\0';
1352 ✗ av_strlcpy(basename, s->url, sizeof(basename));
1353 }
1354
1355 1 ptr = strrchr(basename, '.');
1356
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 1 if (ptr)
1357 1 *ptr = '\0';
1358
1359 1 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1360
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 1 if (!c->streams)
1361 ✗ return AVERROR(ENOMEM);
1362
1363
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 1 if ((ret = parse_adaptation_sets(s)) < 0)
1364 ✗ return ret;
1365
1366
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 1 if ((ret = init_segment_types(s)) < 0)
1367 ✗ return ret;
1368
1369
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 2 for (i = 0; i < s->nb_streams; i++) {
1370 1 OutputStream *os = &c->streams[i];
1371 1 AdaptationSet *as = &c->as[os->as_idx - 1];
1372 AVFormatContext *ctx;
1373 AVStream *st;
1374 1 AVDictionary *opts = NULL;
1375 char filename[1024];
1376 AVBPrint buffer;
1377
1378 1 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1379
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 1 if (!os->bit_rate) {
1380 ✗ int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1381 ✗ AV_LOG_ERROR : AV_LOG_WARNING;
1382 ✗ av_log(s, level, "No bit rate set for stream %d\n", i);
1383 ✗ if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1384 ✗ return AVERROR(EINVAL);
1385 }
1386
1387 // copy AdaptationSet language and role from stream metadata
1388 1 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1389 1 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1390
1391
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 1 if (c->init_seg_name) {
1392 1 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1393
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 1 if (!os->init_seg_name)
1394 ✗ return AVERROR(ENOMEM);
1395 }
1396
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 1 if (c->media_seg_name) {
1397 1 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1398
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 1 if (!os->media_seg_name)
1399 ✗ return AVERROR(ENOMEM);
1400 }
1401
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 1 if (c->single_file_name) {
1402 ✗ os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1403 ✗ if (!os->single_file_name)
1404 ✗ return AVERROR(ENOMEM);
1405 }
1406
1407
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 1 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1408 ✗ if ((!c->single_file && !av_match_ext(os->init_seg_name, os->format_name)) ||
1409 ✗ (!c->single_file && !av_match_ext(os->media_seg_name, os->format_name)) ||
1410 ✗ ( c->single_file && !av_match_ext(os->single_file_name, os->format_name))) {
1411 ✗ av_log(s, AV_LOG_WARNING,
1412 "One or many segment file names doesn't end with .webm. "
1413 "Override -init_seg_name and/or -media_seg_name and/or "
1414 "-single_file_name to end with the extension .webm\n");
1415 }
1416 ✗ if (c->streaming) {
1417 // Streaming not supported as matroskaenc buffers internally before writing the output
1418 ✗ av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1419 ✗ c->streaming = 0;
1420 }
1421 }
1422
1423 1 os->ctx = ctx = avformat_alloc_context();
1424
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 1 if (!ctx)
1425 ✗ return AVERROR(ENOMEM);
1426
1427 1 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1428
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 1 if (!ctx->oformat)
1429 ✗ return AVERROR_MUXER_NOT_FOUND;
1430 1 ctx->interrupt_callback = s->interrupt_callback;
1431 1 ctx->opaque = s->opaque;
1432 1 ctx->io_close2 = s->io_close2;
1433 1 ctx->io_open = s->io_open;
1434 1 ctx->strict_std_compliance = s->strict_std_compliance;
1435
1436
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 1 if (!(st = avformat_new_stream(ctx, NULL)))
1437 ✗ return AVERROR(ENOMEM);
1438 1 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1439 1 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1440 1 st->time_base = s->streams[i]->time_base;
1441 1 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1442 1 ctx->avoid_negative_ts = s->avoid_negative_ts;
1443 1 ctx->flags = s->flags;
1444
1445 1 os->parser = av_parser_init(st->codecpar->codec_id);
1446
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 1 if (os->parser) {
1447 1 os->parser_avctx = avcodec_alloc_context3(NULL);
1448
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 1 if (!os->parser_avctx)
1449 ✗ return AVERROR(ENOMEM);
1450 1 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1451
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 1 if (ret < 0)
1452 ✗ return ret;
1453 // We only want to parse frame headers
1454 1 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1455 }
1456
1457
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 1 if (c->single_file) {
1458 ✗ if (os->single_file_name)
1459 ✗ ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1460 else
1461 ✗ snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1462 } else {
1463 1 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1464 }
1465 1 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1466 1 set_http_options(&opts, c);
1467
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 1 if (!c->single_file) {
1468
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 1 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0) {
1469 ✗ av_dict_free(&opts);
1470 ✗ return ret;
1471 }
1472 1 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1473 } else {
1474 ✗ ctx->url = av_strdup(filename);
1475 ✗ ret = s->io_open(s, &ctx->pb, filename, AVIO_FLAG_WRITE, &opts);
1476 }
1477 1 av_dict_free(&opts);
1478
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 1 if (ret < 0)
1479 ✗ return ret;
1480 1 os->init_start_pos = 0;
1481
1482 1 av_dict_copy(&opts, c->format_options, 0);
1483
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 1 if (!as->seg_duration)
1484 1 as->seg_duration = c->seg_duration;
1485
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 1 if (!as->frag_duration)
1486 1 as->frag_duration = c->frag_duration;
1487
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 1 if (as->frag_type < 0)
1488 1 as->frag_type = c->frag_type;
1489 1 os->seg_duration = as->seg_duration;
1490 1 os->frag_duration = as->frag_duration;
1491 1 os->frag_type = as->frag_type;
1492
1493 1 c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1494
1495
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 1 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1496 ✗ av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1497 ✗ return AVERROR(EINVAL);
1498 }
1499
1500
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 1 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1501 ✗ av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1502 ✗ os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1503 }
1504
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 1 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1505 ✗ av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1506 ✗ return AVERROR(EINVAL);
1507 }
1508
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 1 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1509 ✗ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1510 ✗ av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1511 ✗ os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1512 }
1513
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 1 if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1514 // Set this now if a parser isn't used
1515 1 os->coding_dependency = 1;
1516
1517
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 1 if (os->segment_type == SEGMENT_TYPE_MP4) {
1518
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 1 if (c->streaming)
1519 // skip_sidx : Reduce bitrate overhead
1520 // skip_trailer : Avoids growing memory usage with time
1521 1 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1522 else {
1523 ✗ if (c->global_sidx)
1524 ✗ av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1525 else
1526 ✗ av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1527 }
1528
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 1 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1529 1 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1530 else
1531 ✗ av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1532
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 1 if (os->frag_type == FRAG_TYPE_DURATION)
1533 ✗ av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1534
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 1 if (c->write_prft)
1535 ✗ av_dict_set(&opts, "write_prft", "wallclock", 0);
1536 } else {
1537 ✗ av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1538 ✗ av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1539 ✗ av_dict_set_int(&opts, "dash", 1, 0);
1540 ✗ av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1541 ✗ av_dict_set_int(&opts, "live", 1, 0);
1542 }
1543 1 ret = avformat_init_output(ctx, &opts);
1544 1 av_dict_free(&opts);
1545
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 1 if (ret < 0)
1546 ✗ return ret;
1547 1 os->ctx_inited = 1;
1548 1 avio_flush(ctx->pb);
1549
1550 1 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1551
1552 1 s->streams[i]->time_base = st->time_base;
1553 // If the muxer wants to shift timestamps, request to have them shifted
1554 // already before being handed to this muxer, so we don't have mismatches
1555 // between the MPD and the actual segments.
1556 1 s->avoid_negative_ts = ctx->avoid_negative_ts;
1557
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 1 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1558 1 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1559 AVRational par;
1560
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 1 if (avg_frame_rate.num > 0) {
1561
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 1 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1562 1 as->min_frame_rate = avg_frame_rate;
1563
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 1 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1564 1 as->max_frame_rate = avg_frame_rate;
1565 } else {
1566 ✗ as->ambiguous_frame_rate = 1;
1567 }
1568
1569
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 1 if (st->codecpar->width > as->max_width)
1570 1 as->max_width = st->codecpar->width;
1571
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 1 if (st->codecpar->height > as->max_height)
1572 1 as->max_height = st->codecpar->height;
1573
1574
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 1 if (st->sample_aspect_ratio.num)
1575 1 os->sar = st->sample_aspect_ratio;
1576 else
1577 ✗ os->sar = (AVRational){1,1};
1578 1 av_reduce(&par.num, &par.den,
1579 1 st->codecpar->width * (int64_t)os->sar.num,
1580 1 st->codecpar->height * (int64_t)os->sar.den,
1581 1024 * 1024);
1582
1583
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 1 if (as->par.num && av_cmp_q(par, as->par)) {
1584 ✗ 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);
1585 ✗ return AVERROR(EINVAL);
1586 }
1587 1 as->par = par;
1588
1589 1 c->has_video = 1;
1590 }
1591
1592 1 av_bprint_init_for_buffer(&buffer, os->codec_str, sizeof(os->codec_str));
1593 1 ff_make_codec_str(s, st->codecpar, &st->avg_frame_rate, &buffer);
1594 1 os->first_pts = AV_NOPTS_VALUE;
1595 1 os->max_pts = AV_NOPTS_VALUE;
1596 1 os->last_dts = AV_NOPTS_VALUE;
1597 1 os->segment_index = 1;
1598
1599
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 1 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1600 1 c->nr_of_streams_to_flush++;
1601 }
1602
1603
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 1 if (!c->has_video && c->seg_duration <= 0) {
1604 ✗ av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1605 ✗ return AVERROR(EINVAL);
1606 }
1607
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 1 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1608 ✗ av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1609
1610 1 c->nr_of_streams_flushed = 0;
1611 1 c->target_latency_refid = -1;
1612
1613 1 return 0;
1614 }
1615
1616 1 static int dash_write_header(AVFormatContext *s)
1617 {
1618 1 DASHContext *c = s->priv_data;
1619 int i, ret;
1620
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 2 for (i = 0; i < s->nb_streams; i++) {
1621 1 OutputStream *os = &c->streams[i];
1622
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 1 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1623 ✗ return ret;
1624
1625 // Flush init segment
1626 // Only for WebM segment, since for mp4 delay_moov is set and
1627 // the init segment is thus flushed after the first packets.
1628
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 1 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1629 ✗ (ret = flush_init_segment(s, os)) < 0)
1630 ✗ return ret;
1631 }
1632 1 return 0;
1633 }
1634
1635 1 static int add_segment(OutputStream *os, const char *file,
1636 int64_t time, int64_t duration,
1637 int64_t start_pos, int64_t range_length,
1638 int64_t index_length, int next_exp_index)
1639 {
1640 int err;
1641 Segment *seg;
1642
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 1 if (os->nb_segments >= os->segments_size) {
1643 1 os->segments_size = (os->segments_size + 1) * 2;
1644
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 1 if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1645 1 os->segments_size)) < 0) {
1646 ✗ os->segments_size = 0;
1647 ✗ os->nb_segments = 0;
1648 ✗ return err;
1649 }
1650 }
1651 1 seg = av_mallocz(sizeof(*seg));
1652
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 1 if (!seg)
1653 ✗ return AVERROR(ENOMEM);
1654 1 av_strlcpy(seg->file, file, sizeof(seg->file));
1655 1 seg->time = time;
1656 1 seg->duration = duration;
1657
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 1 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1658 ✗ seg->duration += seg->time;
1659 ✗ seg->time = 0;
1660 }
1661 1 seg->start_pos = start_pos;
1662 1 seg->range_length = range_length;
1663 1 seg->index_length = index_length;
1664 1 os->segments[os->nb_segments++] = seg;
1665 1 os->segment_index++;
1666 //correcting the segment index if it has fallen behind the expected value
1667
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 1 if (os->segment_index < next_exp_index) {
1668 ✗ av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1669 file, os->segment_index, next_exp_index);
1670 ✗ os->segment_index = next_exp_index;
1671 }
1672 1 return 0;
1673 }
1674
1675 1 static void write_styp(AVIOContext *pb)
1676 {
1677 1 avio_wb32(pb, 24);
1678 1 ffio_wfourcc(pb, "styp");
1679 1 ffio_wfourcc(pb, "msdh");
1680 1 avio_wb32(pb, 0); /* minor */
1681 1 ffio_wfourcc(pb, "msdh");
1682 1 ffio_wfourcc(pb, "msix");
1683 1 }
1684
1685 ✗ static void find_index_range(AVFormatContext *s, const char *full_path,
1686 int64_t pos, int *index_length)
1687 {
1688 uint8_t buf[8];
1689 AVIOContext *pb;
1690 int ret;
1691
1692 ✗ ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1693 ✗ if (ret < 0)
1694 ✗ return;
1695 ✗ if (avio_seek(pb, pos, SEEK_SET) != pos) {
1696 ✗ ff_format_io_close(s, &pb);
1697 ✗ return;
1698 }
1699 ✗ ret = avio_read(pb, buf, 8);
1700 ✗ ff_format_io_close(s, &pb);
1701 ✗ if (ret < 8)
1702 ✗ return;
1703 ✗ if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1704 ✗ return;
1705 ✗ *index_length = AV_RB32(&buf[0]);
1706 }
1707
1708 1 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1709 AVPacket *pkt, AVRational *frame_rate)
1710 {
1711 1 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1712 uint8_t *extradata;
1713 size_t extradata_size;
1714 int ret;
1715 AVBPrint buffer;
1716
1717
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 1 if (par->extradata_size)
1718 1 return 0;
1719
1720 ✗ extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1721 ✗ if (!extradata_size)
1722 ✗ return 0;
1723
1724 ✗ ret = ff_alloc_extradata(par, extradata_size);
1725 ✗ if (ret < 0)
1726 ✗ return ret;
1727
1728 ✗ memcpy(par->extradata, extradata, extradata_size);
1729
1730 ✗ av_bprint_init_for_buffer(&buffer, os->codec_str, sizeof(os->codec_str));
1731 ✗ ff_make_codec_str(s, par, frame_rate, &buffer);
1732
1733 ✗ return 0;
1734 }
1735
1736 ✗ static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1737 ✗ DASHContext *c = s->priv_data;
1738 ✗ int http_base_proto = ff_is_http_proto(filename);
1739
1740 ✗ if (http_base_proto) {
1741 ✗ AVDictionary *http_opts = NULL;
1742
1743 ✗ set_http_options(&http_opts, c);
1744 ✗ av_dict_set(&http_opts, "method", "DELETE", 0);
1745
1746 ✗ if (dashenc_io_open(s, &c->http_delete, filename, &http_opts) < 0) {
1747 ✗ av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1748 }
1749 ✗ av_dict_free(&http_opts);
1750
1751 //Nothing to write
1752 ✗ dashenc_io_close(s, &c->http_delete, filename);
1753 } else {
1754 ✗ int res = ffurl_delete(filename);
1755 ✗ if (res < 0) {
1756 ✗ av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR),
1757 ✗ "failed to delete %s: %s\n", filename, av_err2str(res));
1758 }
1759 }
1760 ✗ }
1761
1762 ✗ static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1763 {
1764 ✗ DASHContext *c = s->priv_data;
1765 AVBPrint buf;
1766
1767 ✗ av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1768
1769 ✗ av_bprintf(&buf, "%s%s", c->dirname, file);
1770 ✗ if (!av_bprint_is_complete(&buf)) {
1771 ✗ av_bprint_finalize(&buf, NULL);
1772 ✗ av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1773 ✗ return AVERROR(ENOMEM);
1774 }
1775
1776 ✗ dashenc_delete_file(s, buf.str);
1777
1778 ✗ av_bprint_finalize(&buf, NULL);
1779 ✗ return 0;
1780 }
1781
1782 ✗ static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1783 {
1784 ✗ for (int i = 0; i < remove_count; ++i) {
1785 ✗ dashenc_delete_segment_file(s, os->segments[i]->file);
1786
1787 // Delete the segment regardless of whether the file was successfully deleted
1788 ✗ av_free(os->segments[i]);
1789 }
1790
1791 ✗ os->nb_segments -= remove_count;
1792 ✗ memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1793 ✗ }
1794
1795 1 static int dash_flush(AVFormatContext *s, int final, int stream)
1796 {
1797 1 DASHContext *c = s->priv_data;
1798 1 int i, ret = 0;
1799
1800 1 const char *proto = avio_find_protocol_name(s->url);
1801
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 1 int use_rename = proto && !strcmp(proto, "file");
1802
1803 1 int cur_flush_segment_index = 0, next_exp_index = -1;
1804
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 1 if (stream >= 0) {
1805 ✗ cur_flush_segment_index = c->streams[stream].segment_index;
1806
1807 //finding the next segment's expected index, based on the current pts value
1808 ✗ if (c->use_template && !c->use_timeline && c->index_correction &&
1809 ✗ c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1810 ✗ c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1811 ✗ int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1812 ✗ c->streams[stream].first_pts,
1813 ✗ s->streams[stream]->time_base,
1814 ✗ AV_TIME_BASE_Q);
1815 ✗ next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1816 }
1817 }
1818
1819
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 2 for (i = 0; i < s->nb_streams; i++) {
1820 1 OutputStream *os = &c->streams[i];
1821 1 AVStream *st = s->streams[i];
1822 1 int range_length, index_length = 0;
1823 int64_t duration;
1824
1825
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 1 if (!os->packets_written)
1826 ✗ continue;
1827
1828 // Flush the single stream that got a keyframe right now.
1829 // Flush all audio streams as well, in sync with video keyframes,
1830 // but not the other video streams.
1831
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 1 if (stream >= 0 && i != stream) {
1832 ✗ if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1833 ✗ s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1834 ✗ continue;
1835 ✗ if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1836 ✗ continue;
1837 // Make sure we don't flush audio streams multiple times, when
1838 // all video streams are flushed one at a time.
1839 ✗ if (c->has_video && os->segment_index > cur_flush_segment_index)
1840 ✗ continue;
1841 }
1842
1843
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 1 if (c->single_file)
1844 ✗ snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1845
1846 1 ret = flush_dynbuf(c, os, &range_length);
1847
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 1 if (ret < 0)
1848 ✗ break;
1849 1 os->packets_written = 0;
1850
1851
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 1 if (c->single_file) {
1852 ✗ find_index_range(s, os->full_path, os->pos, &index_length);
1853 } else {
1854 1 dashenc_io_close(s, &os->out, os->temp_path);
1855
1856
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 1 if (use_rename) {
1857 1 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1858
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 1 if (ret < 0)
1859 ✗ break;
1860 }
1861 }
1862
1863 1 duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1864 1 os->last_duration = FFMAX(os->last_duration, duration);
1865
1866
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 1 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1867 1 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1868 1 8 * AV_TIME_BASE) / duration;
1869 1 os->total_pkt_size = 0;
1870 1 os->total_pkt_duration = 0;
1871
1872
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 1 if (!os->bit_rate && !os->first_segment_bit_rate) {
1873 ✗ os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1874 }
1875 1 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1876 1 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1877
1878 1 os->pos += range_length;
1879 }
1880
1881
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 1 if (c->window_size) {
1882
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 2 for (i = 0; i < s->nb_streams; i++) {
1883 1 OutputStream *os = &c->streams[i];
1884 1 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1885
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 1 if (remove_count > 0)
1886 ✗ dashenc_delete_media_segments(s, os, remove_count);
1887 }
1888 }
1889
1890
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 1 if (final) {
1891
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 2 for (i = 0; i < s->nb_streams; i++) {
1892 1 OutputStream *os = &c->streams[i];
1893
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 1 if (os->ctx && os->ctx_inited) {
1894 1 int64_t file_size = avio_tell(os->ctx->pb);
1895 1 av_write_trailer(os->ctx);
1896
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 1 if (c->global_sidx) {
1897 int j, start_index, start_number;
1898 ✗ int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1899 ✗ get_start_index_number(os, c, &start_index, &start_number);
1900 ✗ if (start_index >= os->nb_segments ||
1901 ✗ os->segment_type != SEGMENT_TYPE_MP4)
1902 ✗ continue;
1903 ✗ os->init_range_length += sidx_size;
1904 ✗ for (j = start_index; j < os->nb_segments; j++) {
1905 ✗ Segment *seg = os->segments[j];
1906 ✗ seg->start_pos += sidx_size;
1907 }
1908 }
1909
1910 }
1911 }
1912 }
1913
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 1 if (ret >= 0) {
1914
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 1 if (c->has_video && !final) {
1915 ✗ c->nr_of_streams_flushed++;
1916 ✗ if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1917 ✗ return ret;
1918
1919 ✗ c->nr_of_streams_flushed = 0;
1920 }
1921 // In streaming mode the manifest is written at the beginning
1922 // of the segment instead
1923
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 1 if (!c->streaming || final)
1924 1 ret = write_manifest(s, final);
1925 }
1926 1 return ret;
1927 }
1928
1929 ✗ static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
1930 {
1931 ✗ OutputStream *os = &c->streams[pkt->stream_index];
1932 AVProducerReferenceTime *prft;
1933 size_t side_data_size;
1934
1935 ✗ prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
1936 ✗ if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
1937 // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
1938 // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
1939 ✗ prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
1940 sizeof(AVProducerReferenceTime));
1941 ✗ if (!prft)
1942 ✗ return AVERROR(ENOMEM);
1943 ✗ prft->wallclock = av_gettime();
1944 ✗ prft->flags = 24;
1945 }
1946 ✗ if (os->first_pts == AV_NOPTS_VALUE) {
1947 ✗ os->producer_reference_time = *prft;
1948 ✗ if (c->target_latency_refid < 0)
1949 ✗ c->target_latency_refid = pkt->stream_index;
1950 }
1951
1952 ✗ return 0;
1953 }
1954
1955 1 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1956 {
1957 1 DASHContext *c = s->priv_data;
1958 1 AVStream *st = s->streams[pkt->stream_index];
1959 1 OutputStream *os = &c->streams[pkt->stream_index];
1960 1 AdaptationSet *as = &c->as[os->as_idx - 1];
1961 int64_t seg_end_duration, elapsed_duration;
1962 int ret;
1963
1964 1 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1965
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 1 if (ret < 0)
1966 ✗ return ret;
1967
1968 // Fill in a heuristic guess of the packet duration, if none is available.
1969 // The mp4 muxer will do something similar (for the last packet in a fragment)
1970 // if nothing is set (setting it for the other packets doesn't hurt).
1971 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1972 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1973 // so that we know the exact timestamps of fragments.
1974
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 1 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1975 ✗ pkt->duration = pkt->dts - os->last_dts;
1976 1 os->last_dts = pkt->dts;
1977
1978 // If forcing the stream to start at 0, the mp4 muxer will set the start
1979 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1980
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 1 if (os->first_pts == AV_NOPTS_VALUE &&
1981
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 1 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1982 ✗ pkt->pts -= pkt->dts;
1983 ✗ pkt->dts = 0;
1984 }
1985
1986
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 1 if (c->write_prft) {
1987 ✗ ret = dash_parse_prft(c, pkt);
1988 ✗ if (ret < 0)
1989 ✗ return ret;
1990 }
1991
1992
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 1 if (os->first_pts == AV_NOPTS_VALUE) {
1993 1 os->first_pts = pkt->pts;
1994 }
1995 1 os->last_pts = pkt->pts;
1996
1997
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 1 if (!c->availability_start_time[0]) {
1998 1 int64_t start_time_us = av_gettime();
1999 2 int64_t mpd_start_time_us = c->availability_start_time_ms ?
2000
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 1 c->availability_start_time_ms * 1000 :
2001 start_time_us;
2002 1 c->start_time_s = start_time_us / 1000000;
2003 1 format_date(c->availability_start_time,
2004 sizeof(c->availability_start_time), mpd_start_time_us);
2005 }
2006
2007
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 1 if (!os->packets_written)
2008 1 os->availability_time_offset = 0;
2009
2010
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 1 if (!os->availability_time_offset &&
2011
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 1 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2012
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 1 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2013 1 AdaptationSet *as = &c->as[os->as_idx - 1];
2014 1 int64_t frame_duration = 0;
2015
2016
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 1 switch (os->frag_type) {
2017 ✗ case FRAG_TYPE_DURATION:
2018 ✗ frame_duration = os->frag_duration;
2019 ✗ break;
2020 1 case FRAG_TYPE_EVERY_FRAME:
2021 1 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2022 1 break;
2023 }
2024
2025 1 os->availability_time_offset = ((double) os->seg_duration -
2026 1 frame_duration) / AV_TIME_BASE;
2027 1 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2028 }
2029
2030
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 1 if (c->use_template && !c->use_timeline) {
2031 ✗ elapsed_duration = pkt->pts - os->first_pts;
2032 ✗ seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2033 } else {
2034 1 elapsed_duration = pkt->pts - os->start_pts;
2035 1 seg_end_duration = os->seg_duration;
2036 }
2037
2038
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 1 if (os->parser &&
2039
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 1 (os->frag_type == FRAG_TYPE_PFRAMES ||
2040
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 1 as->trick_idx >= 0)) {
2041 // Parse the packets only in scenarios where it's needed
2042 uint8_t *data;
2043 int size;
2044 ✗ av_parser_parse2(os->parser, os->parser_avctx,
2045 ✗ &data, &size, pkt->data, pkt->size,
2046 pkt->pts, pkt->dts, pkt->pos);
2047
2048 ✗ os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2049 }
2050
2051
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 1 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2052 ✗ av_compare_ts(elapsed_duration, st->time_base,
2053 ✗ seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2054 ✗ if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2055 ✗ c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2056 st->time_base,
2057 ✗ AV_TIME_BASE_Q);
2058 ✗ c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2059 st->time_base,
2060 ✗ AV_TIME_BASE_Q);
2061
2062 ✗ if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2063 ✗ if (c->last_duration < os->last_duration*9/10 ||
2064 ✗ c->last_duration > os->last_duration*11/10) {
2065 ✗ av_log(s, AV_LOG_WARNING,
2066 "Segment durations differ too much, enable use_timeline "
2067 "and use_template, or keep a stricter keyframe interval\n");
2068 }
2069 }
2070 }
2071
2072 ✗ if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2073 ✗ format_date(os->producer_reference_time_str,
2074 sizeof(os->producer_reference_time_str),
2075 os->producer_reference_time.wallclock);
2076
2077 ✗ if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2078 ✗ return ret;
2079 }
2080
2081
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 1 if (!os->packets_written) {
2082 // If we wrote a previous segment, adjust the start time of the segment
2083 // to the end of the previous one (which is the same as the mp4 muxer
2084 // does). This avoids gaps in the timeline.
2085
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 1 if (os->max_pts != AV_NOPTS_VALUE)
2086 ✗ os->start_pts = os->max_pts;
2087 else
2088 1 os->start_pts = pkt->pts;
2089 }
2090
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 1 if (os->max_pts == AV_NOPTS_VALUE)
2091 1 os->max_pts = pkt->pts + pkt->duration;
2092 else
2093 ✗ os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2094
2095
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 1 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2096
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 1 os->frag_type == FRAG_TYPE_PFRAMES &&
2097 ✗ os->packets_written) {
2098 ✗ av_assert0(os->parser);
2099 ✗ if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2100 ✗ st->codecpar->video_delay &&
2101 ✗ !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2102 ✗ pkt->flags & AV_PKT_FLAG_KEY) {
2103 ✗ ret = av_write_frame(os->ctx, NULL);
2104 ✗ if (ret < 0)
2105 ✗ return ret;
2106
2107 ✗ if (!os->availability_time_offset) {
2108 ✗ int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2109 ✗ AV_TIME_BASE_Q);
2110 ✗ os->availability_time_offset = ((double) os->seg_duration -
2111 ✗ frag_duration) / AV_TIME_BASE;
2112 ✗ as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2113 }
2114 }
2115 }
2116
2117
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 1 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2118 ✗ os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2119 ✗ c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2120 }
2121
2122
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 1 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2123 ✗ return ret;
2124
2125 1 os->packets_written++;
2126 1 os->total_pkt_size += pkt->size;
2127 1 os->total_pkt_duration += pkt->duration;
2128 1 os->last_flags = pkt->flags;
2129
2130
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 1 if (!os->init_range_length)
2131 1 flush_init_segment(s, os);
2132
2133 //open the output context when the first frame of a segment is ready
2134
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 1 if (!c->single_file && os->packets_written == 1) {
2135 1 AVDictionary *opts = NULL;
2136 1 const char *proto = avio_find_protocol_name(s->url);
2137
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 1 int use_rename = proto && !strcmp(proto, "file");
2138
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 1 if (os->segment_type == SEGMENT_TYPE_MP4)
2139 1 write_styp(os->ctx->pb);
2140 1 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2141 1 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2142 os->media_seg_name, pkt->stream_index,
2143 os->segment_index, os->bit_rate, os->start_pts);
2144 1 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2145 1 os->filename);
2146 1 snprintf(os->temp_path, sizeof(os->temp_path),
2147
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 1 use_rename ? "%s.tmp" : "%s", os->full_path);
2148 1 set_http_options(&opts, c);
2149 1 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2150 1 av_dict_free(&opts);
2151
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 1 if (ret < 0) {
2152 ✗ return handle_io_open_error(s, ret, os->temp_path);
2153 }
2154
2155 // in streaming mode, the segments are available for playing
2156 // before fully written but the manifest is needed so that
2157 // clients and discover the segment filenames.
2158
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 1 if (c->streaming) {
2159 1 write_manifest(s, 0);
2160 }
2161
2162
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 1 if (c->lhls) {
2163 ✗ char *prefetch_url = use_rename ? NULL : os->filename;
2164 ✗ write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2165 }
2166 }
2167
2168 //write out the data immediately in streaming mode
2169
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 1 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2170 1 int len = 0;
2171 1 uint8_t *buf = NULL;
2172 1 avio_flush(os->ctx->pb);
2173 1 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2174
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 1 if (os->out) {
2175 1 avio_write(os->out, buf + os->written_len, len - os->written_len);
2176 1 avio_flush(os->out);
2177 }
2178 1 os->written_len = len;
2179 }
2180
2181 1 return ret;
2182 }
2183
2184 1 static int dash_write_trailer(AVFormatContext *s)
2185 {
2186 1 DASHContext *c = s->priv_data;
2187 int i;
2188
2189
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 1 if (s->nb_streams > 0) {
2190 1 OutputStream *os = &c->streams[0];
2191 // If no segments have been written so far, try to do a crude
2192 // guess of the segment duration
2193
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 1 if (!c->last_duration)
2194 1 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2195 1 s->streams[0]->time_base,
2196 1 AV_TIME_BASE_Q);
2197 1 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2198 1 s->streams[0]->time_base,
2199 1 AV_TIME_BASE_Q);
2200 }
2201 1 dash_flush(s, 1, -1);
2202
2203
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 1 if (c->remove_at_exit) {
2204 ✗ for (i = 0; i < s->nb_streams; ++i) {
2205 ✗ OutputStream *os = &c->streams[i];
2206 ✗ dashenc_delete_media_segments(s, os, os->nb_segments);
2207 ✗ dashenc_delete_segment_file(s, os->initfile);
2208 ✗ if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2209 char filename[1024];
2210 ✗ get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2211 ✗ dashenc_delete_file(s, filename);
2212 }
2213 }
2214 ✗ dashenc_delete_file(s, s->url);
2215
2216 ✗ if (c->hls_playlist && c->master_playlist_created) {
2217 char filename[1024];
2218 ✗ snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2219 ✗ dashenc_delete_file(s, filename);
2220 }
2221 }
2222
2223 1 return 0;
2224 }
2225
2226 1 static int dash_check_bitstream(AVFormatContext *s, AVStream *st,
2227 const AVPacket *avpkt)
2228 {
2229 1 DASHContext *c = s->priv_data;
2230 1 OutputStream *os = &c->streams[st->index];
2231 1 AVFormatContext *oc = os->ctx;
2232
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 1 if (ffofmt(oc->oformat)->check_bitstream) {
2233 1 AVStream *const ost = oc->streams[0];
2234 int ret;
2235 1 ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, avpkt);
2236
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 1 if (ret == 1) {
2237 1 FFStream *const sti = ffstream(st);
2238 1 FFStream *const osti = ffstream(ost);
2239 1 sti->bsfc = osti->bsfc;
2240 1 osti->bsfc = NULL;
2241 }
2242 1 return ret;
2243 }
2244 ✗ return 1;
2245 }
2246
2247 #define OFFSET(x) offsetof(DASHContext, x)
2248 #define E AV_OPT_FLAG_ENCODING_PARAM
2249 static const AVOption options[] = {
2250 { "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 },
2251 { "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, .unit = "segment_type"},
2252 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, .unit = "segment_type"},
2253 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, .unit = "segment_type"},
2254 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, .unit = "segment_type"},
2255 { "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 },
2256 { "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},
2257 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2258 { "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, .unit = "frag_type"},
2259 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, .unit = "frag_type"},
2260 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, .unit = "frag_type"},
2261 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, .unit = "frag_type"},
2262 { "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, .unit = "frag_type"},
2263 { "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 },
2264 { "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2265 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2266 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2267 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2268 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2269 { "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 },
2270 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2271 { "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 },
2272 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2273 { "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 },
2274 { "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},
2275 { "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2276 { "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 },
2277 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2278 { "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2279 { "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, .unit = "mpd_profile"},
2280 { "dash", "MPEG-DASH ISO Base media file format live profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, .unit = "mpd_profile"},
2281 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, .unit = "mpd_profile"},
2282 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2283 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2284 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2285 { "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 },
2286 { "availability_start_time_ms", "set MPD availabilityStartTime as epoch milliseconds", OFFSET(availability_start_time_ms), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, DASH_MAX_AVAILABILITY_START_TIME_MS, E },
2287 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2288 { "suggested_presentation_delay", "set MPD suggestedPresentationDelay", OFFSET(suggested_presentation_delay), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, DASH_MAX_SUGGESTED_PRESENTATION_DELAY, E },
2289 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2290 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2291 { "update_period", "Set the mpd update interval", OFFSET(update_period), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2292 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2293 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2294 { "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 },
2295 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2296 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2297 { NULL },
2298 };
2299
2300 static const AVClass dash_class = {
2301 .class_name = "dash muxer",
2302 .item_name = av_default_item_name,
2303 .option = options,
2304 .version = LIBAVUTIL_VERSION_INT,
2305 };
2306
2307 const FFOutputFormat ff_dash_muxer = {
2308 .p.name = "dash",
2309 .p.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2310 .p.extensions = "mpd",
2311 .p.audio_codec = AV_CODEC_ID_AAC,
2312 .p.video_codec = AV_CODEC_ID_H264,
2313 .p.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2314 .p.priv_class = &dash_class,
2315 .priv_data_size = sizeof(DASHContext),
2316 .init = dash_init,
2317 .write_header = dash_write_header,
2318 .write_packet = dash_write_packet,
2319 .write_trailer = dash_write_trailer,
2320 .deinit = dash_free,
2321 .check_bitstream = dash_check_bitstream,
2322 };
2323