FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/dashenc.c
Date: 2026-06-16 12:54:33
Exec Total Coverage
Lines: 670 1344 49.9%
Functions: 29 38 76.3%
Branches: 321 1065 30.1%
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, 0, 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 = os->pos * 8 * AV_TIME_BASE / c->total_duration;
710 ✗ snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
711 ✗ } else if (os->first_segment_bit_rate > 0)
712 ✗ snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
713
714
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 2 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
715 2 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
716 2 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
717
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 2 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
718 ✗ avio_printf(out, " scanType=\"unknown\"");
719
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 2 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
720 ✗ avio_printf(out, " scanType=\"interlaced\"");
721 2 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
722
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 2 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
723 ✗ avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
724
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 2 if (as->trick_idx >= 0) {
725 ✗ AdaptationSet *tas = &c->as[as->trick_idx];
726 ✗ if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
727 ✗ avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
728 }
729
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 2 if (!os->coding_dependency)
730 ✗ avio_printf(out, " codingDependency=\"false\"");
731 2 avio_printf(out, ">\n");
732 } else {
733 ✗ avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
734 ✗ i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
735 ✗ avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
736 ✗ s->streams[i]->codecpar->ch_layout.nb_channels);
737 }
738
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 2 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
739 ✗ avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
740 ✗ i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
741 ✗ avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
742 ✗ avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
743 }
744
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 2 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
745 ✗ (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
746 ✗ avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
747 2 output_segment_list(os, out, s, i, final);
748 2 avio_printf(out, "\t\t\t</Representation>\n");
749 }
750 2 avio_printf(out, "\t\t</AdaptationSet>\n");
751
752 2 return 0;
753 }
754
755 1 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
756 {
757 1 DASHContext *c = s->priv_data;
758 void *mem;
759
760
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 1 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
761 ✗ av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
762 ✗ return AVERROR(EINVAL);
763 }
764 1 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
765
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 1 if (!mem)
766 ✗ return AVERROR(ENOMEM);
767 1 c->as = mem;
768 1 ++c->nb_as;
769
770 1 *as = &c->as[c->nb_as - 1];
771 1 memset(*as, 0, sizeof(**as));
772 1 (*as)->media_type = type;
773 1 (*as)->frag_type = -1;
774 1 (*as)->trick_idx = -1;
775
776 1 return 0;
777 }
778
779 ✗ static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
780 {
781 ✗ DASHContext *c = s->priv_data;
782 ✗ AdaptationSet *as = &c->as[as_idx - 1];
783 ✗ OutputStream *os = &c->streams[i];
784
785 ✗ if (as->media_type != s->streams[i]->codecpar->codec_type) {
786 ✗ av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
787 ✗ return AVERROR(EINVAL);
788 ✗ } else if (os->as_idx) {
789 ✗ av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
790 ✗ return AVERROR(EINVAL);
791 }
792 ✗ if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
793 ✗ av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
794 ✗ return AVERROR(EINVAL);
795 }
796 ✗ os->as_idx = as_idx;
797 ✗ ++as->nb_streams;
798
799 ✗ return 0;
800 }
801
802 1 static int parse_adaptation_sets(AVFormatContext *s)
803 {
804 1 DASHContext *c = s->priv_data;
805 1 const char *p = c->adaptation_sets;
806 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
807 AdaptationSet *as;
808 int i, n, ret;
809
810 // default: one AdaptationSet for each stream
811
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 1 if (!p) {
812
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813
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 1 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
814 ✗ return ret;
815 1 as->id = i;
816
817 1 c->streams[i].as_idx = c->nb_as;
818 1 ++as->nb_streams;
819 }
820 1 goto end;
821 }
822
823 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
824 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
825 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
826 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
827 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
828 // descriptor_str should be a self-closing xml tag.
829 // seg_duration and frag_duration have the same syntax as the global options of
830 // the same name, and the former have precedence over them if set.
831 ✗ state = new_set;
832 ✗ while (*p) {
833 ✗ if (*p == ' ') {
834 ✗ p++;
835 ✗ continue;
836 ✗ } else if (state == new_set && av_strstart(p, "id=", &p)) {
837 char id_str[10], *end_str;
838
839 ✗ n = strcspn(p, ",");
840 ✗ snprintf(id_str, sizeof(id_str), "%.*s", n, p);
841
842 ✗ i = strtol(id_str, &end_str, 10);
843 ✗ if (id_str == end_str || i < 0 || i > c->nb_as) {
844 ✗ av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
845 ✗ return AVERROR(EINVAL);
846 }
847
848 ✗ if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
849 ✗ return ret;
850 ✗ as->id = i;
851
852 ✗ p += n;
853 ✗ if (*p)
854 ✗ p++;
855 ✗ state = parse_default;
856 ✗ } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
857 ✗ state = parse_seg_duration;
858 ✗ } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
859 ✗ state = parse_frag_duration;
860 ✗ } else if (state == parse_seg_duration || state == parse_frag_duration) {
861 char str[32];
862 ✗ int64_t usecs = 0;
863
864 ✗ n = strcspn(p, ",");
865 ✗ snprintf(str, sizeof(str), "%.*s", n, p);
866 ✗ p += n;
867 ✗ if (*p)
868 ✗ p++;
869
870 ✗ ret = av_parse_time(&usecs, str, 1);
871 ✗ if (ret < 0) {
872 ✗ av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
873 ✗ return ret;
874 }
875
876 ✗ if (state == parse_seg_duration)
877 ✗ as->seg_duration = usecs;
878 else
879 ✗ as->frag_duration = usecs;
880 ✗ state = parse_default;
881 ✗ } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
882 char type_str[16];
883
884 ✗ n = strcspn(p, ",");
885 ✗ snprintf(type_str, sizeof(type_str), "%.*s", n, p);
886 ✗ p += n;
887 ✗ if (*p)
888 ✗ p++;
889
890 ✗ if (!strcmp(type_str, "duration"))
891 ✗ as->frag_type = FRAG_TYPE_DURATION;
892 ✗ else if (!strcmp(type_str, "pframes"))
893 ✗ as->frag_type = FRAG_TYPE_PFRAMES;
894 ✗ else if (!strcmp(type_str, "every_frame"))
895 ✗ as->frag_type = FRAG_TYPE_EVERY_FRAME;
896 ✗ else if (!strcmp(type_str, "none"))
897 ✗ as->frag_type = FRAG_TYPE_NONE;
898 else {
899 ✗ av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
900 ✗ return ret;
901 }
902 ✗ state = parse_default;
903 ✗ } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
904 ✗ n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
905 ✗ if (n < strlen(p)) {
906 ✗ as->descriptor = av_strndup(p, n);
907 } else {
908 ✗ av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
909 ✗ return AVERROR(EINVAL);
910 }
911 ✗ p += n;
912 ✗ if (*p)
913 ✗ p++;
914 ✗ state = parse_default;
915 ✗ } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
916 char trick_id_str[10], *end_str;
917
918 ✗ n = strcspn(p, ",");
919 ✗ snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
920 ✗ p += n;
921
922 ✗ as->trick_idx = strtol(trick_id_str, &end_str, 10);
923 ✗ if (trick_id_str == end_str || as->trick_idx < 0)
924 ✗ return AVERROR(EINVAL);
925
926 ✗ if (*p)
927 ✗ p++;
928 ✗ state = parse_default;
929 ✗ } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
930 ✗ state = parsing_streams;
931 ✗ } else if (state == parsing_streams) {
932 ✗ AdaptationSet *as = &c->as[c->nb_as - 1];
933 char idx_str[8], *end_str;
934
935 ✗ n = strcspn(p, " ,");
936 ✗ snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
937 ✗ p += n;
938
939 // if value is "a" or "v", map all streams of that type
940 ✗ if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
941 ✗ enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
942 ✗ av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
943
944 ✗ for (i = 0; i < s->nb_streams; i++) {
945 ✗ if (s->streams[i]->codecpar->codec_type != type)
946 ✗ continue;
947
948 ✗ as->media_type = s->streams[i]->codecpar->codec_type;
949
950 ✗ if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
951 ✗ return ret;
952 }
953 } else { // select single stream
954 ✗ i = strtol(idx_str, &end_str, 10);
955 ✗ if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
956 ✗ av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
957 ✗ return AVERROR(EINVAL);
958 }
959 ✗ av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
960
961 ✗ if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
962 ✗ as->media_type = s->streams[i]->codecpar->codec_type;
963 }
964
965 ✗ if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
966 ✗ return ret;
967 }
968
969 ✗ if (*p == ' ')
970 ✗ state = new_set;
971 ✗ if (*p)
972 ✗ p++;
973 } else {
974 ✗ return AVERROR(EINVAL);
975 }
976 }
977
978 ✗ end:
979 // check for unassigned streams
980
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 2 for (i = 0; i < s->nb_streams; i++) {
981 1 OutputStream *os = &c->streams[i];
982
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 1 if (!os->as_idx) {
983 ✗ av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
984 ✗ return AVERROR(EINVAL);
985 }
986 }
987
988 // check references for trick mode AdaptationSet
989
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 2 for (i = 0; i < c->nb_as; i++) {
990 1 as = &c->as[i];
991
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 1 if (as->trick_idx < 0)
992 1 continue;
993 ✗ for (n = 0; n < c->nb_as; n++) {
994 ✗ if (c->as[n].id == as->trick_idx)
995 ✗ break;
996 }
997 ✗ if (n >= c->nb_as) {
998 ✗ av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
999 ✗ return AVERROR(EINVAL);
1000 }
1001 }
1002
1003 1 return 0;
1004 }
1005
1006 2 static int write_manifest(AVFormatContext *s, int final)
1007 {
1008 2 DASHContext *c = s->priv_data;
1009 AVIOContext *out;
1010 char temp_filename[1024];
1011 int ret, i;
1012 2 const char *proto = avio_find_protocol_name(s->url);
1013
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 2 int use_rename = proto && !strcmp(proto, "file");
1014 static unsigned int warned_non_file = 0;
1015 2 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1016 2 AVDictionary *opts = NULL;
1017
1018
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 2 if (!use_rename && !warned_non_file++)
1019 ✗ av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1020
1021
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 2 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1022 2 set_http_options(&opts, c);
1023 2 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1024 2 av_dict_free(&opts);
1025
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 2 if (ret < 0) {
1026 ✗ return handle_io_open_error(s, ret, temp_filename);
1027 }
1028 2 out = c->mpd_out;
1029 2 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1030 2 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1031 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1032 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1033 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1034 "\tprofiles=\"");
1035
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 2 if (c->profile & MPD_PROFILE_DASH)
1036
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 2 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1037
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 2 if (c->profile & MPD_PROFILE_DVB)
1038 ✗ avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1039
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 2 avio_printf(out, "\ttype=\"%s\"\n",
1040 final ? "static" : "dynamic");
1041
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 2 if (final) {
1042 1 avio_printf(out, "\tmediaPresentationDuration=\"");
1043 1 write_time(out, c->total_duration);
1044 1 avio_printf(out, "\"\n");
1045 } else {
1046 1 int64_t update_period = c->last_duration / AV_TIME_BASE;
1047 char now_str[100];
1048
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 1 if (c->use_template && !c->use_timeline)
1049 ✗ update_period = 500;
1050
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 1 if (c->update_period)
1051 ✗ update_period = c->update_period;
1052 1 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1053
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 1 if (!c->ldash) {
1054
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 1 if (c->suggested_presentation_delay) {
1055 1 avio_printf(out, "\tsuggestedPresentationDelay=\"");
1056 1 write_time(out, c->suggested_presentation_delay);
1057 1 avio_printf(out, "\"\n");
1058 } else
1059 ✗ avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1060 }
1061
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 1 if (c->availability_start_time[0])
1062 1 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1063 1 format_date(now_str, sizeof(now_str), av_gettime());
1064
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 1 if (now_str[0])
1065 1 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1066
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 1 if (c->window_size && c->use_template) {
1067 1 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1068 1 write_time(out, c->last_duration * c->window_size);
1069 1 avio_printf(out, "\"\n");
1070 }
1071 }
1072 2 avio_printf(out, "\tmaxSegmentDuration=\"");
1073 2 write_time(out, c->max_segment_duration);
1074 2 avio_printf(out, "\"\n");
1075 2 avio_printf(out, "\tminBufferTime=\"");
1076
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 2 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1077 2 avio_printf(out, "\">\n");
1078 2 avio_printf(out, "\t<ProgramInformation>\n");
1079
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 2 if (title) {
1080 ✗ char *escaped = xmlescape(title->value);
1081 ✗ avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1082 ✗ av_free(escaped);
1083 }
1084 2 avio_printf(out, "\t</ProgramInformation>\n");
1085
1086 2 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1087
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 2 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1088 ✗ avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1089 ✗ if (s->nb_streams > 1)
1090 ✗ avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1091 ✗ avio_printf(out, "/>\n");
1092 }
1093
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 4 if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1094 2 av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1095 ✗ avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1096 av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1097 2 avio_printf(out, "\t</ServiceDescription>\n");
1098
1099
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 2 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1100 ✗ OutputStream *os = &c->streams[0];
1101 ✗ int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1102 ✗ int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1103 ✗ avio_printf(out, "\t<Period id=\"0\" start=\"");
1104 ✗ write_time(out, start_time);
1105 ✗ avio_printf(out, "\">\n");
1106 } else {
1107 2 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1108 }
1109
1110
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 4 for (i = 0; i < c->nb_as; i++) {
1111
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 2 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1112 ✗ return ret;
1113 }
1114 2 avio_printf(out, "\t</Period>\n");
1115
1116
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 2 if (c->utc_timing_url)
1117 ✗ avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1118
1119 2 avio_printf(out, "</MPD>\n");
1120 2 avio_flush(out);
1121 2 dashenc_io_close(s, &c->mpd_out, temp_filename);
1122
1123
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 2 if (use_rename) {
1124
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 2 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1125 ✗ return ret;
1126 }
1127
1128
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 2 if (c->hls_playlist) {
1129 char filename_hls[1024];
1130
1131 // Publish master playlist only the configured rate
1132 ✗ if (c->master_playlist_created && (!c->master_publish_rate ||
1133 ✗ c->streams[0].segment_index % c->master_publish_rate))
1134 ✗ return 0;
1135
1136 ✗ if (*c->dirname)
1137 ✗ snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1138 else
1139 ✗ snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1140
1141 ✗ snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1142
1143 ✗ set_http_options(&opts, c);
1144 ✗ ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1145 ✗ av_dict_free(&opts);
1146 ✗ if (ret < 0) {
1147 ✗ return handle_io_open_error(s, ret, temp_filename);
1148 }
1149
1150 ✗ ff_hls_write_playlist_version(c->m3u8_out, 7);
1151
1152 ✗ if (c->has_video) {
1153 // treat audio streams as alternative renditions for video streams
1154 ✗ const char *audio_group = "A1";
1155 ✗ char audio_codec_str[128] = "\0";
1156 ✗ int is_default = 1;
1157 ✗ int max_audio_bitrate = 0;
1158
1159 ✗ for (i = 0; i < s->nb_streams; i++) {
1160 char playlist_file[64];
1161 ✗ AVStream *st = s->streams[i];
1162 ✗ OutputStream *os = &c->streams[i];
1163 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1164 ✗ continue;
1165 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1166 ✗ continue;
1167 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1168 ✗ ff_hls_write_audio_rendition(c->m3u8_out, audio_group,
1169 playlist_file, NULL, i, is_default,
1170 ✗ s->streams[i]->codecpar->ch_layout.nb_channels);
1171 ✗ max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1172 os->muxer_overhead, max_audio_bitrate);
1173 ✗ if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1174 ✗ if (strlen(audio_codec_str))
1175 ✗ av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1176 ✗ av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1177 }
1178 ✗ is_default = 0;
1179 }
1180
1181 ✗ for (i = 0; i < s->nb_streams; i++) {
1182 char playlist_file[64];
1183 char codec_str[128];
1184 ✗ AVStream *st = s->streams[i];
1185 ✗ OutputStream *os = &c->streams[i];
1186 ✗ const char *agroup = NULL;
1187 ✗ int stream_bitrate = os->muxer_overhead;
1188 ✗ if (os->bit_rate > 0)
1189 ✗ stream_bitrate += os->bit_rate;
1190 ✗ else if (final)
1191 ✗ stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1192 ✗ else if (os->first_segment_bit_rate > 0)
1193 ✗ stream_bitrate += os->first_segment_bit_rate;
1194 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1195 ✗ continue;
1196 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1197 ✗ continue;
1198 ✗ av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1199 ✗ if (max_audio_bitrate) {
1200 ✗ agroup = audio_group;
1201 ✗ stream_bitrate += max_audio_bitrate;
1202 ✗ av_strlcat(codec_str, ",", sizeof(codec_str));
1203 ✗ av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1204 }
1205 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1206 ✗ ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1207 playlist_file, agroup,
1208 codec_str, NULL, NULL);
1209 }
1210
1211 } else {
1212 // treat audio streams as separate renditions
1213
1214 ✗ for (i = 0; i < s->nb_streams; i++) {
1215 char playlist_file[64];
1216 char codec_str[128];
1217 ✗ AVStream *st = s->streams[i];
1218 ✗ OutputStream *os = &c->streams[i];
1219 ✗ int stream_bitrate = os->muxer_overhead;
1220 ✗ if (os->bit_rate > 0)
1221 ✗ stream_bitrate += os->bit_rate;
1222 ✗ else if (final)
1223 ✗ stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1224 ✗ else if (os->first_segment_bit_rate > 0)
1225 ✗ stream_bitrate += os->first_segment_bit_rate;
1226 ✗ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1227 ✗ continue;
1228 ✗ if (os->segment_type != SEGMENT_TYPE_MP4)
1229 ✗ continue;
1230 ✗ av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1231 ✗ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1232 ✗ ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1233 playlist_file, NULL,
1234 codec_str, NULL, NULL);
1235 }
1236 }
1237
1238 ✗ dashenc_io_close(s, &c->m3u8_out, temp_filename);
1239 ✗ if (use_rename)
1240 ✗ if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1241 ✗ return ret;
1242 ✗ c->master_playlist_created = 1;
1243 }
1244
1245 2 return 0;
1246 }
1247
1248 2 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1249 {
1250 2 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1251
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 2 if (entry)
1252 ✗ av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1253 2 return 0;
1254 }
1255
1256 1 static int dash_init(AVFormatContext *s)
1257 {
1258 1 DASHContext *c = s->priv_data;
1259 1 int ret = 0, i;
1260 char *ptr;
1261 char basename[1024];
1262
1263 1 c->nr_of_streams_to_flush = 0;
1264
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 1 if (c->single_file_name)
1265 ✗ c->single_file = 1;
1266
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 1 if (c->single_file)
1267 ✗ c->use_template = 0;
1268
1269
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 1 if (!c->profile) {
1270 ✗ av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1271 ✗ return AVERROR(EINVAL);
1272 }
1273
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 1 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1274 ✗ av_log(s, AV_LOG_ERROR,
1275 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1276 ✗ return AVERROR_EXPERIMENTAL;
1277 }
1278
1279
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 1 if (c->lhls && !c->streaming) {
1280 ✗ av_log(s, AV_LOG_WARNING, "Enabling streaming as LHLS is enabled\n");
1281 ✗ c->streaming = 1;
1282 }
1283
1284
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 1 if (c->lhls && !c->hls_playlist) {
1285 ✗ av_log(s, AV_LOG_INFO, "Enabling hls_playlist as LHLS is enabled\n");
1286 ✗ c->hls_playlist = 1;
1287 }
1288
1289
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 1 if (c->ldash && !c->streaming) {
1290 ✗ av_log(s, AV_LOG_WARNING, "Enabling streaming as LDash is enabled\n");
1291 ✗ c->streaming = 1;
1292 }
1293
1294
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 1 if (c->target_latency && !c->streaming) {
1295 ✗ av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1296 ✗ c->target_latency = 0;
1297 }
1298
1299
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 1 if (c->global_sidx && !c->single_file) {
1300 ✗ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1301 ✗ c->global_sidx = 0;
1302 }
1303
1304
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 1 if (c->global_sidx && c->streaming) {
1305 ✗ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1306 ✗ c->global_sidx = 0;
1307 }
1308
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 1 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1309 1 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1310 1 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1311 }
1312
1313
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 1 if (c->write_prft < 0) {
1314 1 c->write_prft = c->ldash;
1315
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 1 if (c->ldash)
1316 ✗ av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1317 }
1318
1319
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 1 if (c->write_prft && !c->utc_timing_url) {
1320 ✗ av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1321 ✗ c->write_prft = 0;
1322 }
1323
1324
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 1 if (c->write_prft && !c->streaming) {
1325 ✗ av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1326 ✗ c->write_prft = 0;
1327 }
1328
1329
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 1 if (c->ldash && !c->write_prft) {
1330 ✗ av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1331 }
1332
1333
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 1 if (c->target_latency && !c->write_prft) {
1334 ✗ av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1335 ✗ c->target_latency = 0;
1336 }
1337
1338
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 1 if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1339 ✗ av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higher than the Maximum. Both will be ignored\n");
1340 ✗ c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1341 }
1342
1343 1 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1344 1 ptr = strrchr(c->dirname, '/');
1345
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 1 if (ptr) {
1346 1 av_strlcpy(basename, &ptr[1], sizeof(basename));
1347 1 ptr[1] = '\0';
1348 } else {
1349 ✗ c->dirname[0] = '\0';
1350 ✗ av_strlcpy(basename, s->url, sizeof(basename));
1351 }
1352
1353 1 ptr = strrchr(basename, '.');
1354
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 1 if (ptr)
1355 1 *ptr = '\0';
1356
1357 1 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1358
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 1 if (!c->streams)
1359 ✗ return AVERROR(ENOMEM);
1360
1361
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 1 if ((ret = parse_adaptation_sets(s)) < 0)
1362 ✗ return ret;
1363
1364
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 1 if ((ret = init_segment_types(s)) < 0)
1365 ✗ return ret;
1366
1367
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 2 for (i = 0; i < s->nb_streams; i++) {
1368 1 OutputStream *os = &c->streams[i];
1369 1 AdaptationSet *as = &c->as[os->as_idx - 1];
1370 AVFormatContext *ctx;
1371 AVStream *st;
1372 1 AVDictionary *opts = NULL;
1373 char filename[1024];
1374 AVBPrint buffer;
1375
1376 1 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1377
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 1 if (!os->bit_rate) {
1378 ✗ int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1379 ✗ AV_LOG_ERROR : AV_LOG_WARNING;
1380 ✗ av_log(s, level, "No bit rate set for stream %d\n", i);
1381 ✗ if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1382 ✗ return AVERROR(EINVAL);
1383 }
1384
1385 // copy AdaptationSet language and role from stream metadata
1386 1 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1387 1 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1388
1389
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 1 if (c->init_seg_name) {
1390 1 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1391
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 1 if (!os->init_seg_name)
1392 ✗ return AVERROR(ENOMEM);
1393 }
1394
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 1 if (c->media_seg_name) {
1395 1 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1396
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 1 if (!os->media_seg_name)
1397 ✗ return AVERROR(ENOMEM);
1398 }
1399
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 1 if (c->single_file_name) {
1400 ✗ os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1401 ✗ if (!os->single_file_name)
1402 ✗ return AVERROR(ENOMEM);
1403 }
1404
1405
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 1 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1406 ✗ if ((!c->single_file && !av_match_ext(os->init_seg_name, os->format_name)) ||
1407 ✗ (!c->single_file && !av_match_ext(os->media_seg_name, os->format_name)) ||
1408 ✗ ( c->single_file && !av_match_ext(os->single_file_name, os->format_name))) {
1409 ✗ av_log(s, AV_LOG_WARNING,
1410 "One or many segment file names doesn't end with .webm. "
1411 "Override -init_seg_name and/or -media_seg_name and/or "
1412 "-single_file_name to end with the extension .webm\n");
1413 }
1414 ✗ if (c->streaming) {
1415 // Streaming not supported as matroskaenc buffers internally before writing the output
1416 ✗ av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1417 ✗ c->streaming = 0;
1418 }
1419 }
1420
1421 1 os->ctx = ctx = avformat_alloc_context();
1422
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 1 if (!ctx)
1423 ✗ return AVERROR(ENOMEM);
1424
1425 1 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1426
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 1 if (!ctx->oformat)
1427 ✗ return AVERROR_MUXER_NOT_FOUND;
1428 1 ctx->interrupt_callback = s->interrupt_callback;
1429 1 ctx->opaque = s->opaque;
1430 1 ctx->io_close2 = s->io_close2;
1431 1 ctx->io_open = s->io_open;
1432 1 ctx->strict_std_compliance = s->strict_std_compliance;
1433
1434
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 1 if (!(st = avformat_new_stream(ctx, NULL)))
1435 ✗ return AVERROR(ENOMEM);
1436 1 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1437 1 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1438 1 st->time_base = s->streams[i]->time_base;
1439 1 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1440 1 ctx->avoid_negative_ts = s->avoid_negative_ts;
1441 1 ctx->flags = s->flags;
1442
1443 1 os->parser = av_parser_init(st->codecpar->codec_id);
1444
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 1 if (os->parser) {
1445 1 os->parser_avctx = avcodec_alloc_context3(NULL);
1446
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 1 if (!os->parser_avctx)
1447 ✗ return AVERROR(ENOMEM);
1448 1 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1449
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 1 if (ret < 0)
1450 ✗ return ret;
1451 // We only want to parse frame headers
1452 1 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1453 }
1454
1455
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 1 if (c->single_file) {
1456 ✗ if (os->single_file_name)
1457 ✗ ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1458 else
1459 ✗ snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1460 } else {
1461 1 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1462 }
1463 1 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1464 1 set_http_options(&opts, c);
1465
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 1 if (!c->single_file) {
1466
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 1 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1467 ✗ return ret;
1468 1 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1469 } else {
1470 ✗ ctx->url = av_strdup(filename);
1471 ✗ ret = s->io_open(s, &ctx->pb, filename, AVIO_FLAG_WRITE, &opts);
1472 }
1473 1 av_dict_free(&opts);
1474
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 1 if (ret < 0)
1475 ✗ return ret;
1476 1 os->init_start_pos = 0;
1477
1478 1 av_dict_copy(&opts, c->format_options, 0);
1479
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 1 if (!as->seg_duration)
1480 1 as->seg_duration = c->seg_duration;
1481
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 1 if (!as->frag_duration)
1482 1 as->frag_duration = c->frag_duration;
1483
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 1 if (as->frag_type < 0)
1484 1 as->frag_type = c->frag_type;
1485 1 os->seg_duration = as->seg_duration;
1486 1 os->frag_duration = as->frag_duration;
1487 1 os->frag_type = as->frag_type;
1488
1489 1 c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1490
1491
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 1 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1492 ✗ av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1493 ✗ return AVERROR(EINVAL);
1494 }
1495
1496
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 1 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1497 ✗ av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1498 ✗ os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1499 }
1500
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 1 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1501 ✗ av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1502 ✗ return AVERROR(EINVAL);
1503 }
1504
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 1 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1505 ✗ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1506 ✗ av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1507 ✗ os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1508 }
1509
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 1 if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1510 // Set this now if a parser isn't used
1511 1 os->coding_dependency = 1;
1512
1513
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 1 if (os->segment_type == SEGMENT_TYPE_MP4) {
1514
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 1 if (c->streaming)
1515 // skip_sidx : Reduce bitrate overhead
1516 // skip_trailer : Avoids growing memory usage with time
1517 1 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1518 else {
1519 ✗ if (c->global_sidx)
1520 ✗ av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1521 else
1522 ✗ av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1523 }
1524
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 1 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1525 1 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1526 else
1527 ✗ av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1528
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 1 if (os->frag_type == FRAG_TYPE_DURATION)
1529 ✗ av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1530
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 1 if (c->write_prft)
1531 ✗ av_dict_set(&opts, "write_prft", "wallclock", 0);
1532 } else {
1533 ✗ av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1534 ✗ av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1535 ✗ av_dict_set_int(&opts, "dash", 1, 0);
1536 ✗ av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1537 ✗ av_dict_set_int(&opts, "live", 1, 0);
1538 }
1539 1 ret = avformat_init_output(ctx, &opts);
1540 1 av_dict_free(&opts);
1541
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 1 if (ret < 0)
1542 ✗ return ret;
1543 1 os->ctx_inited = 1;
1544 1 avio_flush(ctx->pb);
1545
1546 1 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1547
1548 1 s->streams[i]->time_base = st->time_base;
1549 // If the muxer wants to shift timestamps, request to have them shifted
1550 // already before being handed to this muxer, so we don't have mismatches
1551 // between the MPD and the actual segments.
1552 1 s->avoid_negative_ts = ctx->avoid_negative_ts;
1553
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 1 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1554 1 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1555 AVRational par;
1556
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 1 if (avg_frame_rate.num > 0) {
1557
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 1 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1558 1 as->min_frame_rate = avg_frame_rate;
1559
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 1 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1560 1 as->max_frame_rate = avg_frame_rate;
1561 } else {
1562 ✗ as->ambiguous_frame_rate = 1;
1563 }
1564
1565
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 1 if (st->codecpar->width > as->max_width)
1566 1 as->max_width = st->codecpar->width;
1567
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 1 if (st->codecpar->height > as->max_height)
1568 1 as->max_height = st->codecpar->height;
1569
1570
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 1 if (st->sample_aspect_ratio.num)
1571 1 os->sar = st->sample_aspect_ratio;
1572 else
1573 ✗ os->sar = (AVRational){1,1};
1574 1 av_reduce(&par.num, &par.den,
1575 1 st->codecpar->width * (int64_t)os->sar.num,
1576 1 st->codecpar->height * (int64_t)os->sar.den,
1577 1024 * 1024);
1578
1579
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 1 if (as->par.num && av_cmp_q(par, as->par)) {
1580 ✗ 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);
1581 ✗ return AVERROR(EINVAL);
1582 }
1583 1 as->par = par;
1584
1585 1 c->has_video = 1;
1586 }
1587
1588 1 av_bprint_init_for_buffer(&buffer, os->codec_str, sizeof(os->codec_str));
1589 1 ff_make_codec_str(s, st->codecpar, &st->avg_frame_rate, &buffer);
1590 1 os->first_pts = AV_NOPTS_VALUE;
1591 1 os->max_pts = AV_NOPTS_VALUE;
1592 1 os->last_dts = AV_NOPTS_VALUE;
1593 1 os->segment_index = 1;
1594
1595
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 1 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1596 1 c->nr_of_streams_to_flush++;
1597 }
1598
1599
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 1 if (!c->has_video && c->seg_duration <= 0) {
1600 ✗ av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1601 ✗ return AVERROR(EINVAL);
1602 }
1603
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 1 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1604 ✗ av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1605
1606 1 c->nr_of_streams_flushed = 0;
1607 1 c->target_latency_refid = -1;
1608
1609 1 return 0;
1610 }
1611
1612 1 static int dash_write_header(AVFormatContext *s)
1613 {
1614 1 DASHContext *c = s->priv_data;
1615 int i, ret;
1616
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 2 for (i = 0; i < s->nb_streams; i++) {
1617 1 OutputStream *os = &c->streams[i];
1618
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 1 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1619 ✗ return ret;
1620
1621 // Flush init segment
1622 // Only for WebM segment, since for mp4 delay_moov is set and
1623 // the init segment is thus flushed after the first packets.
1624
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 1 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1625 ✗ (ret = flush_init_segment(s, os)) < 0)
1626 ✗ return ret;
1627 }
1628 1 return 0;
1629 }
1630
1631 1 static int add_segment(OutputStream *os, const char *file,
1632 int64_t time, int64_t duration,
1633 int64_t start_pos, int64_t range_length,
1634 int64_t index_length, int next_exp_index)
1635 {
1636 int err;
1637 Segment *seg;
1638
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 1 if (os->nb_segments >= os->segments_size) {
1639 1 os->segments_size = (os->segments_size + 1) * 2;
1640
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 1 if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1641 1 os->segments_size)) < 0) {
1642 ✗ os->segments_size = 0;
1643 ✗ os->nb_segments = 0;
1644 ✗ return err;
1645 }
1646 }
1647 1 seg = av_mallocz(sizeof(*seg));
1648
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 1 if (!seg)
1649 ✗ return AVERROR(ENOMEM);
1650 1 av_strlcpy(seg->file, file, sizeof(seg->file));
1651 1 seg->time = time;
1652 1 seg->duration = duration;
1653
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 1 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1654 ✗ seg->duration += seg->time;
1655 ✗ seg->time = 0;
1656 }
1657 1 seg->start_pos = start_pos;
1658 1 seg->range_length = range_length;
1659 1 seg->index_length = index_length;
1660 1 os->segments[os->nb_segments++] = seg;
1661 1 os->segment_index++;
1662 //correcting the segment index if it has fallen behind the expected value
1663
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 1 if (os->segment_index < next_exp_index) {
1664 ✗ av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1665 file, os->segment_index, next_exp_index);
1666 ✗ os->segment_index = next_exp_index;
1667 }
1668 1 return 0;
1669 }
1670
1671 1 static void write_styp(AVIOContext *pb)
1672 {
1673 1 avio_wb32(pb, 24);
1674 1 ffio_wfourcc(pb, "styp");
1675 1 ffio_wfourcc(pb, "msdh");
1676 1 avio_wb32(pb, 0); /* minor */
1677 1 ffio_wfourcc(pb, "msdh");
1678 1 ffio_wfourcc(pb, "msix");
1679 1 }
1680
1681 ✗ static void find_index_range(AVFormatContext *s, const char *full_path,
1682 int64_t pos, int *index_length)
1683 {
1684 uint8_t buf[8];
1685 AVIOContext *pb;
1686 int ret;
1687
1688 ✗ ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1689 ✗ if (ret < 0)
1690 ✗ return;
1691 ✗ if (avio_seek(pb, pos, SEEK_SET) != pos) {
1692 ✗ ff_format_io_close(s, &pb);
1693 ✗ return;
1694 }
1695 ✗ ret = avio_read(pb, buf, 8);
1696 ✗ ff_format_io_close(s, &pb);
1697 ✗ if (ret < 8)
1698 ✗ return;
1699 ✗ if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1700 ✗ return;
1701 ✗ *index_length = AV_RB32(&buf[0]);
1702 }
1703
1704 2 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1705 AVPacket *pkt, AVRational *frame_rate)
1706 {
1707 2 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1708 uint8_t *extradata;
1709 size_t extradata_size;
1710 int ret;
1711 AVBPrint buffer;
1712
1713
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 2 if (par->extradata_size)
1714 2 return 0;
1715
1716 ✗ extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1717 ✗ if (!extradata_size)
1718 ✗ return 0;
1719
1720 ✗ ret = ff_alloc_extradata(par, extradata_size);
1721 ✗ if (ret < 0)
1722 ✗ return ret;
1723
1724 ✗ memcpy(par->extradata, extradata, extradata_size);
1725
1726 ✗ av_bprint_init_for_buffer(&buffer, os->codec_str, sizeof(os->codec_str));
1727 ✗ ff_make_codec_str(s, par, frame_rate, &buffer);
1728
1729 ✗ return 0;
1730 }
1731
1732 ✗ static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1733 ✗ DASHContext *c = s->priv_data;
1734 ✗ int http_base_proto = ff_is_http_proto(filename);
1735
1736 ✗ if (http_base_proto) {
1737 ✗ AVDictionary *http_opts = NULL;
1738
1739 ✗ set_http_options(&http_opts, c);
1740 ✗ av_dict_set(&http_opts, "method", "DELETE", 0);
1741
1742 ✗ if (dashenc_io_open(s, &c->http_delete, filename, &http_opts) < 0) {
1743 ✗ av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1744 }
1745 ✗ av_dict_free(&http_opts);
1746
1747 //Nothing to write
1748 ✗ dashenc_io_close(s, &c->http_delete, filename);
1749 } else {
1750 ✗ int res = ffurl_delete(filename);
1751 ✗ if (res < 0) {
1752 ✗ av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR),
1753 ✗ "failed to delete %s: %s\n", filename, av_err2str(res));
1754 }
1755 }
1756 ✗ }
1757
1758 ✗ static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1759 {
1760 ✗ DASHContext *c = s->priv_data;
1761 AVBPrint buf;
1762
1763 ✗ av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1764
1765 ✗ av_bprintf(&buf, "%s%s", c->dirname, file);
1766 ✗ if (!av_bprint_is_complete(&buf)) {
1767 ✗ av_bprint_finalize(&buf, NULL);
1768 ✗ av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1769 ✗ return AVERROR(ENOMEM);
1770 }
1771
1772 ✗ dashenc_delete_file(s, buf.str);
1773
1774 ✗ av_bprint_finalize(&buf, NULL);
1775 ✗ return 0;
1776 }
1777
1778 ✗ static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1779 {
1780 ✗ for (int i = 0; i < remove_count; ++i) {
1781 ✗ dashenc_delete_segment_file(s, os->segments[i]->file);
1782
1783 // Delete the segment regardless of whether the file was successfully deleted
1784 ✗ av_free(os->segments[i]);
1785 }
1786
1787 ✗ os->nb_segments -= remove_count;
1788 ✗ memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1789 ✗ }
1790
1791 1 static int dash_flush(AVFormatContext *s, int final, int stream)
1792 {
1793 1 DASHContext *c = s->priv_data;
1794 1 int i, ret = 0;
1795
1796 1 const char *proto = avio_find_protocol_name(s->url);
1797
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 1 int use_rename = proto && !strcmp(proto, "file");
1798
1799 1 int cur_flush_segment_index = 0, next_exp_index = -1;
1800
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 1 if (stream >= 0) {
1801 ✗ cur_flush_segment_index = c->streams[stream].segment_index;
1802
1803 //finding the next segment's expected index, based on the current pts value
1804 ✗ if (c->use_template && !c->use_timeline && c->index_correction &&
1805 ✗ c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1806 ✗ c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1807 ✗ int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1808 ✗ c->streams[stream].first_pts,
1809 ✗ s->streams[stream]->time_base,
1810 ✗ AV_TIME_BASE_Q);
1811 ✗ next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1812 }
1813 }
1814
1815
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 2 for (i = 0; i < s->nb_streams; i++) {
1816 1 OutputStream *os = &c->streams[i];
1817 1 AVStream *st = s->streams[i];
1818 1 int range_length, index_length = 0;
1819 int64_t duration;
1820
1821
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 1 if (!os->packets_written)
1822 ✗ continue;
1823
1824 // Flush the single stream that got a keyframe right now.
1825 // Flush all audio streams as well, in sync with video keyframes,
1826 // but not the other video streams.
1827
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 1 if (stream >= 0 && i != stream) {
1828 ✗ if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1829 ✗ s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1830 ✗ continue;
1831 ✗ if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1832 ✗ continue;
1833 // Make sure we don't flush audio streams multiple times, when
1834 // all video streams are flushed one at a time.
1835 ✗ if (c->has_video && os->segment_index > cur_flush_segment_index)
1836 ✗ continue;
1837 }
1838
1839
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 1 if (c->single_file)
1840 ✗ snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1841
1842 1 ret = flush_dynbuf(c, os, &range_length);
1843
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 1 if (ret < 0)
1844 ✗ break;
1845 1 os->packets_written = 0;
1846
1847
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 1 if (c->single_file) {
1848 ✗ find_index_range(s, os->full_path, os->pos, &index_length);
1849 } else {
1850 1 dashenc_io_close(s, &os->out, os->temp_path);
1851
1852
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 1 if (use_rename) {
1853 1 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1854
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 1 if (ret < 0)
1855 ✗ break;
1856 }
1857 }
1858
1859 1 duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1860 1 os->last_duration = FFMAX(os->last_duration, duration);
1861
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 1 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1863 1 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1864 1 8 * AV_TIME_BASE) / duration;
1865 1 os->total_pkt_size = 0;
1866 1 os->total_pkt_duration = 0;
1867
1868
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 1 if (!os->bit_rate && !os->first_segment_bit_rate) {
1869 ✗ os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1870 }
1871 1 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1872 1 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1873
1874 1 os->pos += range_length;
1875 }
1876
1877
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 1 if (c->window_size) {
1878
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 2 for (i = 0; i < s->nb_streams; i++) {
1879 1 OutputStream *os = &c->streams[i];
1880 1 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1881
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 1 if (remove_count > 0)
1882 ✗ dashenc_delete_media_segments(s, os, remove_count);
1883 }
1884 }
1885
1886
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 1 if (final) {
1887
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 2 for (i = 0; i < s->nb_streams; i++) {
1888 1 OutputStream *os = &c->streams[i];
1889
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 1 if (os->ctx && os->ctx_inited) {
1890 1 int64_t file_size = avio_tell(os->ctx->pb);
1891 1 av_write_trailer(os->ctx);
1892
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 1 if (c->global_sidx) {
1893 int j, start_index, start_number;
1894 ✗ int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1895 ✗ get_start_index_number(os, c, &start_index, &start_number);
1896 ✗ if (start_index >= os->nb_segments ||
1897 ✗ os->segment_type != SEGMENT_TYPE_MP4)
1898 ✗ continue;
1899 ✗ os->init_range_length += sidx_size;
1900 ✗ for (j = start_index; j < os->nb_segments; j++) {
1901 ✗ Segment *seg = os->segments[j];
1902 ✗ seg->start_pos += sidx_size;
1903 }
1904 }
1905
1906 }
1907 }
1908 }
1909
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 1 if (ret >= 0) {
1910
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 1 if (c->has_video && !final) {
1911 ✗ c->nr_of_streams_flushed++;
1912 ✗ if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1913 ✗ return ret;
1914
1915 ✗ c->nr_of_streams_flushed = 0;
1916 }
1917 // In streaming mode the manifest is written at the beginning
1918 // of the segment instead
1919
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 1 if (!c->streaming || final)
1920 1 ret = write_manifest(s, final);
1921 }
1922 1 return ret;
1923 }
1924
1925 ✗ static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
1926 {
1927 ✗ OutputStream *os = &c->streams[pkt->stream_index];
1928 AVProducerReferenceTime *prft;
1929 size_t side_data_size;
1930
1931 ✗ prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
1932 ✗ if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
1933 // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
1934 // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
1935 ✗ prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
1936 sizeof(AVProducerReferenceTime));
1937 ✗ if (!prft)
1938 ✗ return AVERROR(ENOMEM);
1939 ✗ prft->wallclock = av_gettime();
1940 ✗ prft->flags = 24;
1941 }
1942 ✗ if (os->first_pts == AV_NOPTS_VALUE) {
1943 ✗ os->producer_reference_time = *prft;
1944 ✗ if (c->target_latency_refid < 0)
1945 ✗ c->target_latency_refid = pkt->stream_index;
1946 }
1947
1948 ✗ return 0;
1949 }
1950
1951 2 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1952 {
1953 2 DASHContext *c = s->priv_data;
1954 2 AVStream *st = s->streams[pkt->stream_index];
1955 2 OutputStream *os = &c->streams[pkt->stream_index];
1956 2 AdaptationSet *as = &c->as[os->as_idx - 1];
1957 int64_t seg_end_duration, elapsed_duration;
1958 int ret;
1959
1960 2 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1961
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 2 if (ret < 0)
1962 ✗ return ret;
1963
1964 // Fill in a heuristic guess of the packet duration, if none is available.
1965 // The mp4 muxer will do something similar (for the last packet in a fragment)
1966 // if nothing is set (setting it for the other packets doesn't hurt).
1967 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1968 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1969 // so that we know the exact timestamps of fragments.
1970
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 2 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1971 ✗ pkt->duration = pkt->dts - os->last_dts;
1972 2 os->last_dts = pkt->dts;
1973
1974 // If forcing the stream to start at 0, the mp4 muxer will set the start
1975 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1976
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 2 if (os->first_pts == AV_NOPTS_VALUE &&
1977
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 1 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1978 ✗ pkt->pts -= pkt->dts;
1979 ✗ pkt->dts = 0;
1980 }
1981
1982
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 2 if (c->write_prft) {
1983 ✗ ret = dash_parse_prft(c, pkt);
1984 ✗ if (ret < 0)
1985 ✗ return ret;
1986 }
1987
1988
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 2 if (os->first_pts == AV_NOPTS_VALUE) {
1989 1 os->first_pts = pkt->pts;
1990 }
1991 2 os->last_pts = pkt->pts;
1992
1993
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 2 if (!c->availability_start_time[0]) {
1994 1 int64_t start_time_us = av_gettime();
1995 2 int64_t mpd_start_time_us = c->availability_start_time_ms ?
1996
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 1 c->availability_start_time_ms * 1000 :
1997 start_time_us;
1998 1 c->start_time_s = start_time_us / 1000000;
1999 1 format_date(c->availability_start_time,
2000 sizeof(c->availability_start_time), mpd_start_time_us);
2001 }
2002
2003
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 2 if (!os->packets_written)
2004 1 os->availability_time_offset = 0;
2005
2006
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 2 if (!os->availability_time_offset &&
2007
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 1 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2008
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 1 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2009 1 AdaptationSet *as = &c->as[os->as_idx - 1];
2010 1 int64_t frame_duration = 0;
2011
2012
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 1 switch (os->frag_type) {
2013 ✗ case FRAG_TYPE_DURATION:
2014 ✗ frame_duration = os->frag_duration;
2015 ✗ break;
2016 1 case FRAG_TYPE_EVERY_FRAME:
2017 1 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2018 1 break;
2019 }
2020
2021 1 os->availability_time_offset = ((double) os->seg_duration -
2022 1 frame_duration) / AV_TIME_BASE;
2023 1 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2024 }
2025
2026
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 2 if (c->use_template && !c->use_timeline) {
2027 ✗ elapsed_duration = pkt->pts - os->first_pts;
2028 ✗ seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2029 } else {
2030 2 elapsed_duration = pkt->pts - os->start_pts;
2031 2 seg_end_duration = os->seg_duration;
2032 }
2033
2034
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 2 if (os->parser &&
2035
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 2 (os->frag_type == FRAG_TYPE_PFRAMES ||
2036
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 2 as->trick_idx >= 0)) {
2037 // Parse the packets only in scenarios where it's needed
2038 uint8_t *data;
2039 int size;
2040 ✗ av_parser_parse2(os->parser, os->parser_avctx,
2041 ✗ &data, &size, pkt->data, pkt->size,
2042 pkt->pts, pkt->dts, pkt->pos);
2043
2044 ✗ os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2045 }
2046
2047
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 3 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2048 1 av_compare_ts(elapsed_duration, st->time_base,
2049 1 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2050 ✗ if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2051 ✗ c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2052 st->time_base,
2053 ✗ AV_TIME_BASE_Q);
2054 ✗ c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2055 st->time_base,
2056 ✗ AV_TIME_BASE_Q);
2057
2058 ✗ if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2059 ✗ if (c->last_duration < os->last_duration*9/10 ||
2060 ✗ c->last_duration > os->last_duration*11/10) {
2061 ✗ av_log(s, AV_LOG_WARNING,
2062 "Segment durations differ too much, enable use_timeline "
2063 "and use_template, or keep a stricter keyframe interval\n");
2064 }
2065 }
2066 }
2067
2068 ✗ if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2069 ✗ format_date(os->producer_reference_time_str,
2070 sizeof(os->producer_reference_time_str),
2071 os->producer_reference_time.wallclock);
2072
2073 ✗ if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2074 ✗ return ret;
2075 }
2076
2077
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 2 if (!os->packets_written) {
2078 // If we wrote a previous segment, adjust the start time of the segment
2079 // to the end of the previous one (which is the same as the mp4 muxer
2080 // does). This avoids gaps in the timeline.
2081
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 1 if (os->max_pts != AV_NOPTS_VALUE)
2082 ✗ os->start_pts = os->max_pts;
2083 else
2084 1 os->start_pts = pkt->pts;
2085 }
2086
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 2 if (os->max_pts == AV_NOPTS_VALUE)
2087 1 os->max_pts = pkt->pts + pkt->duration;
2088 else
2089 1 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2090
2091
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 2 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2092
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 2 os->frag_type == FRAG_TYPE_PFRAMES &&
2093 ✗ os->packets_written) {
2094 ✗ av_assert0(os->parser);
2095 ✗ if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2096 ✗ st->codecpar->video_delay &&
2097 ✗ !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2098 ✗ pkt->flags & AV_PKT_FLAG_KEY) {
2099 ✗ ret = av_write_frame(os->ctx, NULL);
2100 ✗ if (ret < 0)
2101 ✗ return ret;
2102
2103 ✗ if (!os->availability_time_offset) {
2104 ✗ int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2105 ✗ AV_TIME_BASE_Q);
2106 ✗ os->availability_time_offset = ((double) os->seg_duration -
2107 ✗ frag_duration) / AV_TIME_BASE;
2108 ✗ as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2109 }
2110 }
2111 }
2112
2113
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 2 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2114 1 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2115 1 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2116 }
2117
2118
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 2 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2119 ✗ return ret;
2120
2121 2 os->packets_written++;
2122 2 os->total_pkt_size += pkt->size;
2123 2 os->total_pkt_duration += pkt->duration;
2124 2 os->last_flags = pkt->flags;
2125
2126
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 2 if (!os->init_range_length)
2127 1 flush_init_segment(s, os);
2128
2129 //open the output context when the first frame of a segment is ready
2130
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 2 if (!c->single_file && os->packets_written == 1) {
2131 1 AVDictionary *opts = NULL;
2132 1 const char *proto = avio_find_protocol_name(s->url);
2133
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 1 int use_rename = proto && !strcmp(proto, "file");
2134
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 1 if (os->segment_type == SEGMENT_TYPE_MP4)
2135 1 write_styp(os->ctx->pb);
2136 1 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2137 1 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2138 os->media_seg_name, pkt->stream_index,
2139 os->segment_index, os->bit_rate, os->start_pts);
2140 1 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2141 1 os->filename);
2142 1 snprintf(os->temp_path, sizeof(os->temp_path),
2143
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 1 use_rename ? "%s.tmp" : "%s", os->full_path);
2144 1 set_http_options(&opts, c);
2145 1 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2146 1 av_dict_free(&opts);
2147
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 1 if (ret < 0) {
2148 ✗ return handle_io_open_error(s, ret, os->temp_path);
2149 }
2150
2151 // in streaming mode, the segments are available for playing
2152 // before fully written but the manifest is needed so that
2153 // clients and discover the segment filenames.
2154
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 1 if (c->streaming) {
2155 1 write_manifest(s, 0);
2156 }
2157
2158
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 1 if (c->lhls) {
2159 ✗ char *prefetch_url = use_rename ? NULL : os->filename;
2160 ✗ write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2161 }
2162 }
2163
2164 //write out the data immediately in streaming mode
2165
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 2 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2166 2 int len = 0;
2167 2 uint8_t *buf = NULL;
2168 2 avio_flush(os->ctx->pb);
2169 2 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2170
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 2 if (os->out) {
2171 2 avio_write(os->out, buf + os->written_len, len - os->written_len);
2172 2 avio_flush(os->out);
2173 }
2174 2 os->written_len = len;
2175 }
2176
2177 2 return ret;
2178 }
2179
2180 1 static int dash_write_trailer(AVFormatContext *s)
2181 {
2182 1 DASHContext *c = s->priv_data;
2183 int i;
2184
2185
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 1 if (s->nb_streams > 0) {
2186 1 OutputStream *os = &c->streams[0];
2187 // If no segments have been written so far, try to do a crude
2188 // guess of the segment duration
2189
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 1 if (!c->last_duration)
2190 1 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2191 1 s->streams[0]->time_base,
2192 1 AV_TIME_BASE_Q);
2193 1 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2194 1 s->streams[0]->time_base,
2195 1 AV_TIME_BASE_Q);
2196 }
2197 1 dash_flush(s, 1, -1);
2198
2199
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 1 if (c->remove_at_exit) {
2200 ✗ for (i = 0; i < s->nb_streams; ++i) {
2201 ✗ OutputStream *os = &c->streams[i];
2202 ✗ dashenc_delete_media_segments(s, os, os->nb_segments);
2203 ✗ dashenc_delete_segment_file(s, os->initfile);
2204 ✗ if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2205 char filename[1024];
2206 ✗ get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2207 ✗ dashenc_delete_file(s, filename);
2208 }
2209 }
2210 ✗ dashenc_delete_file(s, s->url);
2211
2212 ✗ if (c->hls_playlist && c->master_playlist_created) {
2213 char filename[1024];
2214 ✗ snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2215 ✗ dashenc_delete_file(s, filename);
2216 }
2217 }
2218
2219 1 return 0;
2220 }
2221
2222 1 static int dash_check_bitstream(AVFormatContext *s, AVStream *st,
2223 const AVPacket *avpkt)
2224 {
2225 1 DASHContext *c = s->priv_data;
2226 1 OutputStream *os = &c->streams[st->index];
2227 1 AVFormatContext *oc = os->ctx;
2228
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 1 if (ffofmt(oc->oformat)->check_bitstream) {
2229 1 AVStream *const ost = oc->streams[0];
2230 int ret;
2231 1 ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, avpkt);
2232
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 1 if (ret == 1) {
2233 1 FFStream *const sti = ffstream(st);
2234 1 FFStream *const osti = ffstream(ost);
2235 1 sti->bsfc = osti->bsfc;
2236 1 osti->bsfc = NULL;
2237 }
2238 1 return ret;
2239 }
2240 ✗ return 1;
2241 }
2242
2243 #define OFFSET(x) offsetof(DASHContext, x)
2244 #define E AV_OPT_FLAG_ENCODING_PARAM
2245 static const AVOption options[] = {
2246 { "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 },
2247 { "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"},
2248 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, .unit = "segment_type"},
2249 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, .unit = "segment_type"},
2250 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, .unit = "segment_type"},
2251 { "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 },
2252 { "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},
2253 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2254 { "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"},
2255 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, .unit = "frag_type"},
2256 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, .unit = "frag_type"},
2257 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, .unit = "frag_type"},
2258 { "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"},
2259 { "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 },
2260 { "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2261 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2262 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2263 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2264 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2265 { "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 },
2266 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2267 { "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 },
2268 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2269 { "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 },
2270 { "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},
2271 { "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2272 { "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 },
2273 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2274 { "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2275 { "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"},
2276 { "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"},
2277 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, .unit = "mpd_profile"},
2278 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2279 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2280 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2281 { "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 },
2282 { "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 },
2283 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2284 { "suggested_presentation_delay", "set MPD suggestedPresentationDelay", OFFSET(suggested_presentation_delay), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, DASH_MAX_SUGGESTED_PRESENTATION_DELAY, E },
2285 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2286 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2287 { "update_period", "Set the mpd update interval", OFFSET(update_period), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2288 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2289 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2290 { "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 },
2291 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2292 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2293 { NULL },
2294 };
2295
2296 static const AVClass dash_class = {
2297 .class_name = "dash muxer",
2298 .item_name = av_default_item_name,
2299 .option = options,
2300 .version = LIBAVUTIL_VERSION_INT,
2301 };
2302
2303 const FFOutputFormat ff_dash_muxer = {
2304 .p.name = "dash",
2305 .p.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2306 .p.extensions = "mpd",
2307 .p.audio_codec = AV_CODEC_ID_AAC,
2308 .p.video_codec = AV_CODEC_ID_H264,
2309 .p.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2310 .p.priv_class = &dash_class,
2311 .priv_data_size = sizeof(DASHContext),
2312 .init = dash_init,
2313 .write_header = dash_write_header,
2314 .write_packet = dash_write_packet,
2315 .write_trailer = dash_write_trailer,
2316 .deinit = dash_free,
2317 .check_bitstream = dash_check_bitstream,
2318 };
2319