FFmpeg coverage

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 "av1.h"
46			#include "avc.h"
47			#include "avformat.h"
48			#include "avio_internal.h"
49			#include "hlsplaylist.h"
50			#if CONFIG_HTTP_PROTOCOL
51			#include "http.h"
52			#endif
53			#include "internal.h"
54			#include "isom.h"
55			#include "mux.h"
56			#include "os_support.h"
57			#include "url.h"
58			#include "vpcc.h"
59			#include "dash.h"
60
61			typedef enum {
62			SEGMENT_TYPE_AUTO = 0,
63			SEGMENT_TYPE_MP4,
64			SEGMENT_TYPE_WEBM,
65			SEGMENT_TYPE_NB
66			} SegmentType;
67
68			enum {
69			FRAG_TYPE_NONE = 0,
70			FRAG_TYPE_EVERY_FRAME,
71			FRAG_TYPE_DURATION,
72			FRAG_TYPE_PFRAMES,
73			FRAG_TYPE_NB
74			};
75
76			#define MPD_PROFILE_DASH 1
77			#define MPD_PROFILE_DVB 2
78
79			typedef struct Segment {
80			char file[1024];
81			int64_t start_pos;
82			int range_length, index_length;
83			int64_t time;
84			double prog_date_time;
85			int64_t duration;
86			int n;
87			} Segment;
88
89			typedef struct AdaptationSet {
90			int id;
91			char *descriptor;
92			int64_t seg_duration;
93			int64_t frag_duration;
94			int frag_type;
95			enum AVMediaType media_type;
96			AVDictionary *metadata;
97			AVRational min_frame_rate, max_frame_rate;
98			int ambiguous_frame_rate;
99			int64_t max_frag_duration;
100			int max_width, max_height;
101			int nb_streams;
102			AVRational par;
103			int trick_idx;
104			} AdaptationSet;
105
106			typedef struct OutputStream {
107			AVFormatContext *ctx;
108			int ctx_inited, as_idx;
109			AVIOContext *out;
110			AVCodecParserContext *parser;
111			AVCodecContext *parser_avctx;
112			int packets_written;
113			char initfile[1024];
114			int64_t init_start_pos, pos;
115			int init_range_length;
116			int nb_segments, segments_size, segment_index;
117			int64_t seg_duration;
118			int64_t frag_duration;
119			int64_t last_duration;
120			Segment **segments;
121			int64_t first_pts, start_pts, max_pts;
122			int64_t last_dts, last_pts;
123			int last_flags;
124			int bit_rate;
125			int first_segment_bit_rate;
126			SegmentType segment_type; /* segment type selected for this particular stream */
127			const char *format_name;
128			const char *extension_name;
129			const char *single_file_name; /* file names selected for this particular stream */
130			const char *init_seg_name;
131			const char *media_seg_name;
132
133			char codec_str[100];
134			int written_len;
135			char filename[1024];
136			char full_path[1024];
137			char temp_path[1024];
138			double availability_time_offset;
139			AVProducerReferenceTime producer_reference_time;
140			char producer_reference_time_str[100];
141			int total_pkt_size;
142			int64_t total_pkt_duration;
143			int muxer_overhead;
144			int frag_type;
145			int64_t gop_size;
146			AVRational sar;
147			int coding_dependency;
148			} OutputStream;
149
150			typedef struct DASHContext {
151			const AVClass *class; /* Class for private options. */
152			char *adaptation_sets;
153			AdaptationSet *as;
154			int nb_as;
155			int window_size;
156			int extra_window_size;
157			int64_t seg_duration;
158			int64_t frag_duration;
159			int remove_at_exit;
160			int use_template;
161			int use_timeline;
162			int single_file;
163			OutputStream *streams;
164			int has_video;
165			int64_t last_duration;
166			int64_t total_duration;
167			char availability_start_time[100];
168			time_t start_time_s;
169			int64_t presentation_time_offset;
170			char dirname[1024];
171			const char *single_file_name; /* file names as specified in options */
172			const char *init_seg_name;
173			const char *media_seg_name;
174			const char *utc_timing_url;
175			const char *method;
176			const char *user_agent;
177			AVDictionary *http_opts;
178			int hls_playlist;
179			const char *hls_master_name;
180			int http_persistent;
181			int master_playlist_created;
182			AVIOContext *mpd_out;
183			AVIOContext *m3u8_out;
184			AVIOContext *http_delete;
185			int streaming;
186			int64_t timeout;
187			int index_correction;
188			AVDictionary *format_options;
189			int global_sidx;
190			SegmentType segment_type_option; /* segment type as specified in options */
191			int ignore_io_errors;
192			int lhls;
193			int ldash;
194			int master_publish_rate;
195			int nr_of_streams_to_flush;
196			int nr_of_streams_flushed;
197			int frag_type;
198			int write_prft;
199			int64_t max_gop_size;
200			int64_t max_segment_duration;
201			int profile;
202			int64_t target_latency;
203			int target_latency_refid;
204			AVRational min_playback_rate;
205			AVRational max_playback_rate;
206			int64_t update_period;
207			} DASHContext;
208
209			static const struct codec_string {
210			enum AVCodecID id;
211			const char str[8];
212			} codecs[] = {
213			{ AV_CODEC_ID_VP8, "vp8" },
214			{ AV_CODEC_ID_VP9, "vp9" },
215			{ AV_CODEC_ID_VORBIS, "vorbis" },
216			{ AV_CODEC_ID_OPUS, "opus" },
217			{ AV_CODEC_ID_FLAC, "flac" },
218			{ AV_CODEC_ID_NONE }
219			};
220
221		✗	static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
222			AVDictionary **options) {
223		✗	DASHContext *c = s->priv_data;
224		✗	int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
225		✗	int err = AVERROR_MUXER_NOT_FOUND;
226		✗	if (!*pb || !http_base_proto || !c->http_persistent) {
227		✗	err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
228			#if CONFIG_HTTP_PROTOCOL
229			} else {
230		✗	URLContext *http_url_context = ffio_geturlcontext(*pb);
231		✗	av_assert0(http_url_context);
232		✗	err = ff_http_do_new_request(http_url_context, filename);
233		✗	if (err < 0)
234		✗	ff_format_io_close(s, pb);
235			#endif
236			}
237		✗	return err;
238			}
239
240		✗	static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
241		✗	DASHContext *c = s->priv_data;
242		✗	int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
243
244		✗	if (!*pb)
245		✗	return;
246
247		✗	if (!http_base_proto || !c->http_persistent) {
248		✗	ff_format_io_close(s, pb);
249			#if CONFIG_HTTP_PROTOCOL
250			} else {
251		✗	URLContext *http_url_context = ffio_geturlcontext(*pb);
252		✗	av_assert0(http_url_context);
253		✗	avio_flush(*pb);
254		✗	ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
255			#endif
256			}
257			}
258
259		✗	static const char *get_format_str(SegmentType segment_type)
260			{
261		✗	switch (segment_type) {
262		✗	case SEGMENT_TYPE_MP4: return "mp4";
263		✗	case SEGMENT_TYPE_WEBM: return "webm";
264			}
265		✗	return NULL;
266			}
267
268		✗	static const char *get_extension_str(SegmentType type, int single_file)
269			{
270		✗	switch (type) {
271
272		✗	case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
273		✗	case SEGMENT_TYPE_WEBM: return "webm";
274		✗	default: return NULL;
275			}
276			}
277
278		✗	static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
279		✗	DASHContext *c = s->priv_data;
280			char errbuf[AV_ERROR_MAX_STRING_SIZE];
281		✗	av_strerror(err, errbuf, sizeof(errbuf));
282		✗	av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
283			"Unable to open %s for writing: %s\n", url, errbuf);
284		✗	return c->ignore_io_errors ? 0 : err;
285			}
286
287		✗	static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
288			{
289		✗	if (segment_type == SEGMENT_TYPE_AUTO) {
290		✗	if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
291		✗	codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
292		✗	segment_type = SEGMENT_TYPE_WEBM;
293			} else {
294		✗	segment_type = SEGMENT_TYPE_MP4;
295			}
296			}
297
298		✗	return segment_type;
299			}
300
301		✗	static int init_segment_types(AVFormatContext *s)
302			{
303		✗	DASHContext *c = s->priv_data;
304		✗	int has_mp4_streams = 0;
305		✗	for (int i = 0; i < s->nb_streams; ++i) {
306		✗	OutputStream *os = &c->streams[i];
307		✗	SegmentType segment_type = select_segment_type(
308		✗	c->segment_type_option, s->streams[i]->codecpar->codec_id);
309		✗	os->segment_type = segment_type;
310		✗	os->format_name = get_format_str(segment_type);
311		✗	if (!os->format_name) {
312		✗	av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
313		✗	return AVERROR_MUXER_NOT_FOUND;
314			}
315		✗	os->extension_name = get_extension_str(segment_type, c->single_file);
316		✗	if (!os->extension_name) {
317		✗	av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
318		✗	return AVERROR_MUXER_NOT_FOUND;
319			}
320
321		✗	has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
322			}
323
324		✗	if (c->hls_playlist && !has_mp4_streams) {
325		✗	av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
326		✗	c->hls_playlist = 0;
327			}
328
329		✗	return 0;
330			}
331
332		✗	static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
333			AVRational *frame_rate, char *str, int size) {
334			VPCC vpcc;
335		✗	int ret = ff_isom_get_vpcc_features(s, par, NULL, 0, frame_rate, &vpcc);
336		✗	if (ret == 0) {
337		✗	av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
338			vpcc.profile, vpcc.level, vpcc.bitdepth);
339			} else {
340			// Default to just vp9 in case of error while finding out profile or level
341		✗	av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
342		✗	av_strlcpy(str, "vp9", size);
343			}
344		✗	return;
345			}
346
347		✗	static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
348			AVRational *frame_rate, char *str, int size)
349			{
350		✗	const AVCodecTag *tags[2] = { NULL, NULL };
351			uint32_t tag;
352			int i;
353
354			// common Webm codecs are not part of RFC 6381
355		✗	for (i = 0; codecs[i].id != AV_CODEC_ID_NONE; i++)
356		✗	if (codecs[i].id == par->codec_id) {
357		✗	if (codecs[i].id == AV_CODEC_ID_VP9) {
358		✗	set_vp9_codec_str(s, par, frame_rate, str, size);
359			} else {
360		✗	av_strlcpy(str, codecs[i].str, size);
361			}
362		✗	return;
363			}
364
365			// for codecs part of RFC 6381
366		✗	if (par->codec_type == AVMEDIA_TYPE_VIDEO)
367		✗	tags[0] = ff_codec_movvideo_tags;
368		✗	else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
369		✗	tags[0] = ff_codec_movaudio_tags;
370			else
371		✗	return;
372
373		✗	tag = par->codec_tag;
374		✗	if (!tag)
375		✗	tag = av_codec_get_tag(tags, par->codec_id);
376		✗	if (!tag)
377		✗	return;
378		✗	if (size < 5)
379		✗	return;
380
381		✗	AV_WL32(str, tag);
382		✗	str[4] = '\0';
383		✗	if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
384			uint32_t oti;
385		✗	tags[0] = ff_mp4_obj_type;
386		✗	oti = av_codec_get_tag(tags, par->codec_id);
387		✗	if (oti)
388		✗	av_strlcatf(str, size, ".%02"PRIx32, oti);
389			else
390		✗	return;
391
392		✗	if (tag == MKTAG('m', 'p', '4', 'a')) {
393		✗	if (par->extradata_size >= 2) {
394		✗	int aot = par->extradata[0] >> 3;
395		✗	if (aot == 31)
396		✗	aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
397		✗	av_strlcatf(str, size, ".%d", aot);
398			}
399		✗	} else if (tag == MKTAG('m', 'p', '4', 'v')) {
400			// Unimplemented, should output ProfileLevelIndication as a decimal number
401		✗	av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
402			}
403		✗	} else if (!strcmp(str, "avc1")) {
404		✗	uint8_t *tmpbuf = NULL;
405		✗	uint8_t *extradata = par->extradata;
406		✗	int extradata_size = par->extradata_size;
407		✗	if (!extradata_size)
408		✗	return;
409		✗	if (extradata[0] != 1) {
410			AVIOContext *pb;
411		✗	if (avio_open_dyn_buf(&pb) < 0)
412		✗	return;
413		✗	if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
414		✗	ffio_free_dyn_buf(&pb);
415		✗	return;
416			}
417		✗	extradata_size = avio_close_dyn_buf(pb, &extradata);
418		✗	tmpbuf = extradata;
419			}
420
421		✗	if (extradata_size >= 4)
422		✗	av_strlcatf(str, size, ".%02x%02x%02x",
423		✗	extradata[1], extradata[2], extradata[3]);
424		✗	av_free(tmpbuf);
425		✗	} else if (!strcmp(str, "av01")) {
426			AV1SequenceParameters seq;
427		✗	if (!par->extradata_size)
428		✗	return;
429		✗	if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
430		✗	return;
431
432		✗	av_strlcatf(str, size, ".%01u.%02u%s.%02u",
433		✗	seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
434		✗	if (seq.color_description_present_flag)
435		✗	av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
436		✗	seq.monochrome,
437		✗	seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
438		✗	seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
439		✗	seq.color_range);
440			}
441			}
442
443		✗	static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
444			{
445			uint8_t *buffer;
446
447		✗	if (!os->ctx->pb) {
448		✗	return AVERROR(EINVAL);
449			}
450
451			// flush
452		✗	av_write_frame(os->ctx, NULL);
453		✗	avio_flush(os->ctx->pb);
454
455		✗	if (!c->single_file) {
456			// write out to file
457		✗	*range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
458		✗	os->ctx->pb = NULL;
459		✗	if (os->out)
460		✗	avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
461		✗	os->written_len = 0;
462		✗	av_free(buffer);
463
464			// re-open buffer
465		✗	return avio_open_dyn_buf(&os->ctx->pb);
466			} else {
467		✗	*range_length = avio_tell(os->ctx->pb) - os->pos;
468		✗	return 0;
469			}
470			}
471
472		✗	static void set_http_options(AVDictionary **options, DASHContext *c)
473			{
474		✗	if (c->method)
475		✗	av_dict_set(options, "method", c->method, 0);
476		✗	av_dict_copy(options, c->http_opts, 0);
477		✗	if (c->user_agent)
478		✗	av_dict_set(options, "user_agent", c->user_agent, 0);
479		✗	if (c->http_persistent)
480		✗	av_dict_set_int(options, "multiple_requests", 1, 0);
481		✗	if (c->timeout >= 0)
482		✗	av_dict_set_int(options, "timeout", c->timeout, 0);
483		✗	}
484
485		✗	static void get_hls_playlist_name(char *playlist_name, int string_size,
486			const char *base_url, int id) {
487		✗	if (base_url)
488		✗	snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
489			else
490		✗	snprintf(playlist_name, string_size, "media_%d.m3u8", id);
491		✗	}
492
493		✗	static void get_start_index_number(OutputStream *os, DASHContext *c,
494			int *start_index, int *start_number) {
495		✗	*start_index = 0;
496		✗	*start_number = 1;
497		✗	if (c->window_size) {
498		✗	*start_index = FFMAX(os->nb_segments - c->window_size, 0);
499		✗	*start_number = FFMAX(os->segment_index - c->window_size, 1);
500			}
501		✗	}
502
503		✗	static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
504			int representation_id, int final,
505			char *prefetch_url) {
506		✗	DASHContext *c = s->priv_data;
507		✗	int timescale = os->ctx->streams[0]->time_base.den;
508			char temp_filename_hls[1024];
509			char filename_hls[1024];
510		✗	AVDictionary *http_opts = NULL;
511		✗	int target_duration = 0;
512		✗	int ret = 0;
513		✗	const char *proto = avio_find_protocol_name(c->dirname);
514		✗	int use_rename = proto && !strcmp(proto, "file");
515			int i, start_index, start_number;
516		✗	double prog_date_time = 0;
517
518		✗	get_start_index_number(os, c, &start_index, &start_number);
519
520		✗	if (!c->hls_playlist || start_index >= os->nb_segments ||
521		✗	os->segment_type != SEGMENT_TYPE_MP4)
522		✗	return;
523
524		✗	get_hls_playlist_name(filename_hls, sizeof(filename_hls),
525		✗	c->dirname, representation_id);
526
527		✗	snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
528
529		✗	set_http_options(&http_opts, c);
530		✗	ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
531		✗	av_dict_free(&http_opts);
532		✗	if (ret < 0) {
533		✗	handle_io_open_error(s, ret, temp_filename_hls);
534		✗	return;
535			}
536		✗	for (i = start_index; i < os->nb_segments; i++) {
537		✗	Segment *seg = os->segments[i];
538		✗	double duration = (double) seg->duration / timescale;
539		✗	if (target_duration <= duration)
540		✗	target_duration = lrint(duration);
541			}
542
543		✗	ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
544			start_number, PLAYLIST_TYPE_NONE, 0);
545
546		✗	ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
547		✗	os->init_range_length, os->init_start_pos);
548
549		✗	for (i = start_index; i < os->nb_segments; i++) {
550		✗	Segment *seg = os->segments[i];
551
552		✗	if (fabs(prog_date_time) < 1e-7) {
553		✗	if (os->nb_segments == 1)
554		✗	prog_date_time = c->start_time_s;
555			else
556		✗	prog_date_time = seg->prog_date_time;
557			}
558		✗	seg->prog_date_time = prog_date_time;
559
560		✗	ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
561		✗	(double) seg->duration / timescale, 0,
562		✗	seg->range_length, seg->start_pos, NULL,
563		✗	c->single_file ? os->initfile : seg->file,
564			&prog_date_time, 0, 0, 0);
565		✗	if (ret < 0) {
566		✗	av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
567			}
568			}
569
570		✗	if (prefetch_url)
571		✗	avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
572
573		✗	if (final)
574		✗	ff_hls_write_end_list(c->m3u8_out);
575
576		✗	dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
577
578		✗	if (use_rename)
579		✗	ff_rename(temp_filename_hls, filename_hls, os->ctx);
580			}
581
582		✗	static int flush_init_segment(AVFormatContext *s, OutputStream *os)
583			{
584		✗	DASHContext *c = s->priv_data;
585			int ret, range_length;
586
587		✗	ret = flush_dynbuf(c, os, &range_length);
588		✗	if (ret < 0)
589		✗	return ret;
590
591		✗	os->pos = os->init_range_length = range_length;
592		✗	if (!c->single_file) {
593			char filename[1024];
594		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
595		✗	dashenc_io_close(s, &os->out, filename);
596			}
597		✗	return 0;
598			}
599
600		✗	static void dash_free(AVFormatContext *s)
601			{
602		✗	DASHContext *c = s->priv_data;
603			int i, j;
604
605		✗	if (c->as) {
606		✗	for (i = 0; i < c->nb_as; i++) {
607		✗	av_dict_free(&c->as[i].metadata);
608		✗	av_freep(&c->as[i].descriptor);
609			}
610		✗	av_freep(&c->as);
611		✗	c->nb_as = 0;
612			}
613
614		✗	if (!c->streams)
615		✗	return;
616		✗	for (i = 0; i < s->nb_streams; i++) {
617		✗	OutputStream *os = &c->streams[i];
618		✗	if (os->ctx && os->ctx->pb) {
619		✗	if (!c->single_file)
620		✗	ffio_free_dyn_buf(&os->ctx->pb);
621			else
622		✗	avio_close(os->ctx->pb);
623			}
624		✗	ff_format_io_close(s, &os->out);
625		✗	avformat_free_context(os->ctx);
626		✗	avcodec_free_context(&os->parser_avctx);
627		✗	av_parser_close(os->parser);
628		✗	for (j = 0; j < os->nb_segments; j++)
629		✗	av_free(os->segments[j]);
630		✗	av_free(os->segments);
631		✗	av_freep(&os->single_file_name);
632		✗	av_freep(&os->init_seg_name);
633		✗	av_freep(&os->media_seg_name);
634			}
635		✗	av_freep(&c->streams);
636
637		✗	ff_format_io_close(s, &c->mpd_out);
638		✗	ff_format_io_close(s, &c->m3u8_out);
639		✗	ff_format_io_close(s, &c->http_delete);
640			}
641
642		✗	static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
643			int representation_id, int final)
644			{
645		✗	DASHContext *c = s->priv_data;
646			int i, start_index, start_number;
647		✗	get_start_index_number(os, c, &start_index, &start_number);
648
649		✗	if (c->use_template) {
650		✗	int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
651		✗	avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
652		✗	if (!c->use_timeline) {
653		✗	avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
654		✗	if (c->streaming && os->availability_time_offset)
655		✗	avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
656			os->availability_time_offset);
657			}
658		✗	if (c->streaming && os->availability_time_offset && !final)
659		✗	avio_printf(out, "availabilityTimeComplete=\"false\" ");
660
661		✗	avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
662		✗	if (c->presentation_time_offset)
663		✗	avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
664		✗	avio_printf(out, ">\n");
665		✗	if (c->use_timeline) {
666		✗	int64_t cur_time = 0;
667		✗	avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
668		✗	for (i = start_index; i < os->nb_segments; ) {
669		✗	Segment *seg = os->segments[i];
670		✗	int repeat = 0;
671		✗	avio_printf(out, "\t\t\t\t\t\t<S ");
672		✗	if (i == start_index || seg->time != cur_time) {
673		✗	cur_time = seg->time;
674		✗	avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
675			}
676		✗	avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
677		✗	while (i + repeat + 1 < os->nb_segments &&
678		✗	os->segments[i + repeat + 1]->duration == seg->duration &&
679		✗	os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
680		✗	repeat++;
681		✗	if (repeat > 0)
682		✗	avio_printf(out, "r=\"%d\" ", repeat);
683		✗	avio_printf(out, "/>\n");
684		✗	i += 1 + repeat;
685		✗	cur_time += (1 + repeat) * seg->duration;
686			}
687		✗	avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
688			}
689		✗	avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
690		✗	} else if (c->single_file) {
691		✗	avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
692		✗	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);
693		✗	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);
694		✗	for (i = start_index; i < os->nb_segments; i++) {
695		✗	Segment *seg = os->segments[i];
696		✗	avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
697		✗	if (seg->index_length)
698		✗	avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
699		✗	avio_printf(out, "/>\n");
700			}
701		✗	avio_printf(out, "\t\t\t\t</SegmentList>\n");
702			} else {
703		✗	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);
704		✗	avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
705		✗	for (i = start_index; i < os->nb_segments; i++) {
706		✗	Segment *seg = os->segments[i];
707		✗	avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
708			}
709		✗	avio_printf(out, "\t\t\t\t</SegmentList>\n");
710			}
711		✗	if (!c->lhls || final) {
712		✗	write_hls_media_playlist(os, s, representation_id, final, NULL);
713			}
714
715		✗	}
716
717		✗	static char *xmlescape(const char *str) {
718		✗	int outlen = strlen(str)*3/2 + 6;
719		✗	char *out = av_realloc(NULL, outlen + 1);
720		✗	int pos = 0;
721		✗	if (!out)
722		✗	return NULL;
723		✗	for (; *str; str++) {
724		✗	if (pos + 6 > outlen) {
725			char *tmp;
726		✗	outlen = 2 * outlen + 6;
727		✗	tmp = av_realloc(out, outlen + 1);
728		✗	if (!tmp) {
729		✗	av_free(out);
730		✗	return NULL;
731			}
732		✗	out = tmp;
733			}
734		✗	if (*str == '&') {
735		✗	memcpy(&out[pos], "&amp;", 5);
736		✗	pos += 5;
737		✗	} else if (*str == '<') {
738		✗	memcpy(&out[pos], "&lt;", 4);
739		✗	pos += 4;
740		✗	} else if (*str == '>') {
741		✗	memcpy(&out[pos], "&gt;", 4);
742		✗	pos += 4;
743		✗	} else if (*str == '\'') {
744		✗	memcpy(&out[pos], "&apos;", 6);
745		✗	pos += 6;
746		✗	} else if (*str == '\"') {
747		✗	memcpy(&out[pos], "&quot;", 6);
748		✗	pos += 6;
749			} else {
750		✗	out[pos++] = *str;
751			}
752			}
753		✗	out[pos] = '\0';
754		✗	return out;
755			}
756
757		✗	static void write_time(AVIOContext *out, int64_t time)
758			{
759		✗	int seconds = time / AV_TIME_BASE;
760		✗	int fractions = time % AV_TIME_BASE;
761		✗	int minutes = seconds / 60;
762		✗	int hours = minutes / 60;
763		✗	seconds %= 60;
764		✗	minutes %= 60;
765		✗	avio_printf(out, "PT");
766		✗	if (hours)
767		✗	avio_printf(out, "%dH", hours);
768		✗	if (hours || minutes)
769		✗	avio_printf(out, "%dM", minutes);
770		✗	avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
771		✗	}
772
773		✗	static void format_date(char *buf, int size, int64_t time_us)
774			{
775			struct tm *ptm, tmbuf;
776		✗	int64_t time_ms = time_us / 1000;
777		✗	const time_t time_s = time_ms / 1000;
778		✗	int millisec = time_ms - (time_s * 1000);
779		✗	ptm = gmtime_r(&time_s, &tmbuf);
780		✗	if (ptm) {
781			int len;
782		✗	if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
783		✗	buf[0] = '\0';
784		✗	return;
785			}
786		✗	len = strlen(buf);
787		✗	snprintf(buf + len, size - len, ".%03dZ", millisec);
788			}
789			}
790
791		✗	static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
792			int final)
793			{
794		✗	DASHContext *c = s->priv_data;
795		✗	AdaptationSet *as = &c->as[as_index];
796			AVDictionaryEntry *lang, *role;
797			int i;
798
799		✗	avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
800		✗	as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
801		✗	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)
802		✗	avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
803		✗	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))
804		✗	avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
805		✗	if (as->media_type == AVMEDIA_TYPE_VIDEO) {
806		✗	avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
807		✗	avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
808			}
809		✗	lang = av_dict_get(as->metadata, "language", NULL, 0);
810		✗	if (lang)
811		✗	avio_printf(out, " lang=\"%s\"", lang->value);
812		✗	avio_printf(out, ">\n");
813
814		✗	if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
815		✗	avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
816		✗	if (as->trick_idx >= 0)
817		✗	avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
818		✗	role = av_dict_get(as->metadata, "role", NULL, 0);
819		✗	if (role)
820		✗	avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
821		✗	if (as->descriptor)
822		✗	avio_printf(out, "\t\t\t%s\n", as->descriptor);
823		✗	for (i = 0; i < s->nb_streams; i++) {
824		✗	AVStream *st = s->streams[i];
825		✗	OutputStream *os = &c->streams[i];
826		✗	char bandwidth_str[64] = {'\0'};
827
828		✗	if (os->as_idx - 1 != as_index)
829		✗	continue;
830
831		✗	if (os->bit_rate > 0)
832		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->bit_rate);
833		✗	else if (final) {
834		✗	int average_bit_rate = os->pos * 8 * AV_TIME_BASE / c->total_duration;
835		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
836		✗	} else if (os->first_segment_bit_rate > 0)
837		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
838
839		✗	if (as->media_type == AVMEDIA_TYPE_VIDEO) {
840		✗	avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
841		✗	i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
842		✗	if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
843		✗	avio_printf(out, " scanType=\"unknown\"");
844		✗	else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
845		✗	avio_printf(out, " scanType=\"interlaced\"");
846		✗	avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
847		✗	if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
848		✗	avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
849		✗	if (as->trick_idx >= 0) {
850		✗	AdaptationSet *tas = &c->as[as->trick_idx];
851		✗	if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
852		✗	avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
853			}
854		✗	if (!os->coding_dependency)
855		✗	avio_printf(out, " codingDependency=\"false\"");
856		✗	avio_printf(out, ">\n");
857			} else {
858		✗	avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
859		✗	i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
860		✗	avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
861		✗	s->streams[i]->codecpar->ch_layout.nb_channels);
862			}
863		✗	if (!final && c->write_prft && os->producer_reference_time_str[0]) {
864		✗	avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
865		✗	i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
866		✗	avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
867		✗	avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
868			}
869		✗	if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
870		✗	(os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
871		✗	avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
872		✗	output_segment_list(os, out, s, i, final);
873		✗	avio_printf(out, "\t\t\t</Representation>\n");
874			}
875		✗	avio_printf(out, "\t\t</AdaptationSet>\n");
876
877		✗	return 0;
878			}
879
880		✗	static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
881			{
882		✗	DASHContext *c = s->priv_data;
883			void *mem;
884
885		✗	if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
886		✗	av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
887		✗	return AVERROR(EINVAL);
888			}
889		✗	mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
890		✗	if (!mem)
891		✗	return AVERROR(ENOMEM);
892		✗	c->as = mem;
893		✗	++c->nb_as;
894
895		✗	*as = &c->as[c->nb_as - 1];
896		✗	memset(*as, 0, sizeof(**as));
897		✗	(*as)->media_type = type;
898		✗	(*as)->frag_type = -1;
899		✗	(*as)->trick_idx = -1;
900
901		✗	return 0;
902			}
903
904		✗	static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
905			{
906		✗	DASHContext *c = s->priv_data;
907		✗	AdaptationSet *as = &c->as[as_idx - 1];
908		✗	OutputStream *os = &c->streams[i];
909
910		✗	if (as->media_type != s->streams[i]->codecpar->codec_type) {
911		✗	av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
912		✗	return AVERROR(EINVAL);
913		✗	} else if (os->as_idx) {
914		✗	av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
915		✗	return AVERROR(EINVAL);
916			}
917		✗	if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
918		✗	av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
919		✗	return AVERROR(EINVAL);
920			}
921		✗	os->as_idx = as_idx;
922		✗	++as->nb_streams;
923
924		✗	return 0;
925			}
926
927		✗	static int parse_adaptation_sets(AVFormatContext *s)
928			{
929		✗	DASHContext *c = s->priv_data;
930		✗	const char *p = c->adaptation_sets;
931			enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
932			AdaptationSet *as;
933			int i, n, ret;
934
935			// default: one AdaptationSet for each stream
936		✗	if (!p) {
937		✗	for (i = 0; i < s->nb_streams; i++) {
938		✗	if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
939		✗	return ret;
940		✗	as->id = i;
941
942		✗	c->streams[i].as_idx = c->nb_as;
943		✗	++as->nb_streams;
944			}
945		✗	goto end;
946			}
947
948			// syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
949			// option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
950			// option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
951			// id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
952			// descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
953			// descriptor_str should be a self-closing xml tag.
954			// seg_duration and frag_duration have the same syntax as the global options of
955			// the same name, and the former have precedence over them if set.
956		✗	state = new_set;
957		✗	while (*p) {
958		✗	if (*p == ' ') {
959		✗	p++;
960		✗	continue;
961		✗	} else if (state == new_set && av_strstart(p, "id=", &p)) {
962			char id_str[10], *end_str;
963
964		✗	n = strcspn(p, ",");
965		✗	snprintf(id_str, sizeof(id_str), "%.*s", n, p);
966
967		✗	i = strtol(id_str, &end_str, 10);
968		✗	if (id_str == end_str || i < 0 || i > c->nb_as) {
969		✗	av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
970		✗	return AVERROR(EINVAL);
971			}
972
973		✗	if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
974		✗	return ret;
975		✗	as->id = i;
976
977		✗	p += n;
978		✗	if (*p)
979		✗	p++;
980		✗	state = parse_default;
981		✗	} else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
982		✗	state = parse_seg_duration;
983		✗	} else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
984		✗	state = parse_frag_duration;
985		✗	} else if (state == parse_seg_duration || state == parse_frag_duration) {
986			char str[32];
987		✗	int64_t usecs = 0;
988
989		✗	n = strcspn(p, ",");
990		✗	snprintf(str, sizeof(str), "%.*s", n, p);
991		✗	p += n;
992		✗	if (*p)
993		✗	p++;
994
995		✗	ret = av_parse_time(&usecs, str, 1);
996		✗	if (ret < 0) {
997		✗	av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
998		✗	return ret;
999			}
1000
1001		✗	if (state == parse_seg_duration)
1002		✗	as->seg_duration = usecs;
1003			else
1004		✗	as->frag_duration = usecs;
1005		✗	state = parse_default;
1006		✗	} else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1007			char type_str[16];
1008
1009		✗	n = strcspn(p, ",");
1010		✗	snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1011		✗	p += n;
1012		✗	if (*p)
1013		✗	p++;
1014
1015		✗	if (!strcmp(type_str, "duration"))
1016		✗	as->frag_type = FRAG_TYPE_DURATION;
1017		✗	else if (!strcmp(type_str, "pframes"))
1018		✗	as->frag_type = FRAG_TYPE_PFRAMES;
1019		✗	else if (!strcmp(type_str, "every_frame"))
1020		✗	as->frag_type = FRAG_TYPE_EVERY_FRAME;
1021		✗	else if (!strcmp(type_str, "none"))
1022		✗	as->frag_type = FRAG_TYPE_NONE;
1023			else {
1024		✗	av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1025		✗	return ret;
1026			}
1027		✗	state = parse_default;
1028		✗	} else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1029		✗	n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1030		✗	if (n < strlen(p)) {
1031		✗	as->descriptor = av_strndup(p, n);
1032			} else {
1033		✗	av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1034		✗	return AVERROR(EINVAL);
1035			}
1036		✗	p += n;
1037		✗	if (*p)
1038		✗	p++;
1039		✗	state = parse_default;
1040		✗	} else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1041			char trick_id_str[10], *end_str;
1042
1043		✗	n = strcspn(p, ",");
1044		✗	snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1045		✗	p += n;
1046
1047		✗	as->trick_idx = strtol(trick_id_str, &end_str, 10);
1048		✗	if (trick_id_str == end_str || as->trick_idx < 0)
1049		✗	return AVERROR(EINVAL);
1050
1051		✗	if (*p)
1052		✗	p++;
1053		✗	state = parse_default;
1054		✗	} else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1055		✗	state = parsing_streams;
1056		✗	} else if (state == parsing_streams) {
1057		✗	AdaptationSet *as = &c->as[c->nb_as - 1];
1058			char idx_str[8], *end_str;
1059
1060		✗	n = strcspn(p, " ,");
1061		✗	snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1062		✗	p += n;
1063
1064			// if value is "a" or "v", map all streams of that type
1065		✗	if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1066		✗	enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1067		✗	av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1068
1069		✗	for (i = 0; i < s->nb_streams; i++) {
1070		✗	if (s->streams[i]->codecpar->codec_type != type)
1071		✗	continue;
1072
1073		✗	as->media_type = s->streams[i]->codecpar->codec_type;
1074
1075		✗	if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1076		✗	return ret;
1077			}
1078			} else { // select single stream
1079		✗	i = strtol(idx_str, &end_str, 10);
1080		✗	if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1081		✗	av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1082		✗	return AVERROR(EINVAL);
1083			}
1084		✗	av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1085
1086		✗	if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1087		✗	as->media_type = s->streams[i]->codecpar->codec_type;
1088			}
1089
1090		✗	if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1091		✗	return ret;
1092			}
1093
1094		✗	if (*p == ' ')
1095		✗	state = new_set;
1096		✗	if (*p)
1097		✗	p++;
1098			} else {
1099		✗	return AVERROR(EINVAL);
1100			}
1101			}
1102
1103		✗	end:
1104			// check for unassigned streams
1105		✗	for (i = 0; i < s->nb_streams; i++) {
1106		✗	OutputStream *os = &c->streams[i];
1107		✗	if (!os->as_idx) {
1108		✗	av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1109		✗	return AVERROR(EINVAL);
1110			}
1111			}
1112
1113			// check references for trick mode AdaptationSet
1114		✗	for (i = 0; i < c->nb_as; i++) {
1115		✗	as = &c->as[i];
1116		✗	if (as->trick_idx < 0)
1117		✗	continue;
1118		✗	for (n = 0; n < c->nb_as; n++) {
1119		✗	if (c->as[n].id == as->trick_idx)
1120		✗	break;
1121			}
1122		✗	if (n >= c->nb_as) {
1123		✗	av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1124		✗	return AVERROR(EINVAL);
1125			}
1126			}
1127
1128		✗	return 0;
1129			}
1130
1131		✗	static int write_manifest(AVFormatContext *s, int final)
1132			{
1133		✗	DASHContext *c = s->priv_data;
1134			AVIOContext *out;
1135			char temp_filename[1024];
1136			int ret, i;
1137		✗	const char *proto = avio_find_protocol_name(s->url);
1138		✗	int use_rename = proto && !strcmp(proto, "file");
1139			static unsigned int warned_non_file = 0;
1140		✗	AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1141		✗	AVDictionary *opts = NULL;
1142
1143		✗	if (!use_rename && !warned_non_file++)
1144		✗	av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1145
1146		✗	snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1147		✗	set_http_options(&opts, c);
1148		✗	ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1149		✗	av_dict_free(&opts);
1150		✗	if (ret < 0) {
1151		✗	return handle_io_open_error(s, ret, temp_filename);
1152			}
1153		✗	out = c->mpd_out;
1154		✗	avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1155		✗	avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1156			"\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1157			"\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1158			"\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1159			"\tprofiles=\"");
1160		✗	if (c->profile & MPD_PROFILE_DASH)
1161		✗	avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1162		✗	if (c->profile & MPD_PROFILE_DVB)
1163		✗	avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1164		✗	avio_printf(out, "\ttype=\"%s\"\n",
1165			final ? "static" : "dynamic");
1166		✗	if (final) {
1167		✗	avio_printf(out, "\tmediaPresentationDuration=\"");
1168		✗	write_time(out, c->total_duration);
1169		✗	avio_printf(out, "\"\n");
1170			} else {
1171		✗	int64_t update_period = c->last_duration / AV_TIME_BASE;
1172			char now_str[100];
1173		✗	if (c->use_template && !c->use_timeline)
1174		✗	update_period = 500;
1175		✗	if (c->update_period)
1176		✗	update_period = c->update_period;
1177		✗	avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1178		✗	if (!c->ldash)
1179		✗	avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1180		✗	if (c->availability_start_time[0])
1181		✗	avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1182		✗	format_date(now_str, sizeof(now_str), av_gettime());
1183		✗	if (now_str[0])
1184		✗	avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1185		✗	if (c->window_size && c->use_template) {
1186		✗	avio_printf(out, "\ttimeShiftBufferDepth=\"");
1187		✗	write_time(out, c->last_duration * c->window_size);
1188		✗	avio_printf(out, "\"\n");
1189			}
1190			}
1191		✗	avio_printf(out, "\tmaxSegmentDuration=\"");
1192		✗	write_time(out, c->max_segment_duration);
1193		✗	avio_printf(out, "\"\n");
1194		✗	avio_printf(out, "\tminBufferTime=\"");
1195		✗	write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1196		✗	avio_printf(out, "\">\n");
1197		✗	avio_printf(out, "\t<ProgramInformation>\n");
1198		✗	if (title) {
1199		✗	char *escaped = xmlescape(title->value);
1200		✗	avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1201		✗	av_free(escaped);
1202			}
1203		✗	avio_printf(out, "\t</ProgramInformation>\n");
1204
1205		✗	avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1206		✗	if (!final && c->target_latency && c->target_latency_refid >= 0) {
1207		✗	avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1208		✗	if (s->nb_streams > 1)
1209		✗	avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1210		✗	avio_printf(out, "/>\n");
1211			}
1212		✗	if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1213		✗	av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1214		✗	avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1215			av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1216		✗	avio_printf(out, "\t</ServiceDescription>\n");
1217
1218		✗	if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1219		✗	OutputStream *os = &c->streams[0];
1220		✗	int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1221		✗	int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1222		✗	avio_printf(out, "\t<Period id=\"0\" start=\"");
1223		✗	write_time(out, start_time);
1224		✗	avio_printf(out, "\">\n");
1225			} else {
1226		✗	avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1227			}
1228
1229		✗	for (i = 0; i < c->nb_as; i++) {
1230		✗	if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1231		✗	return ret;
1232			}
1233		✗	avio_printf(out, "\t</Period>\n");
1234
1235		✗	if (c->utc_timing_url)
1236		✗	avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1237
1238		✗	avio_printf(out, "</MPD>\n");
1239		✗	avio_flush(out);
1240		✗	dashenc_io_close(s, &c->mpd_out, temp_filename);
1241
1242		✗	if (use_rename) {
1243		✗	if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1244		✗	return ret;
1245			}
1246
1247		✗	if (c->hls_playlist) {
1248			char filename_hls[1024];
1249
1250			// Publish master playlist only the configured rate
1251		✗	if (c->master_playlist_created && (!c->master_publish_rate ||
1252		✗	c->streams[0].segment_index % c->master_publish_rate))
1253		✗	return 0;
1254
1255		✗	if (*c->dirname)
1256		✗	snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1257			else
1258		✗	snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1259
1260		✗	snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1261
1262		✗	set_http_options(&opts, c);
1263		✗	ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1264		✗	av_dict_free(&opts);
1265		✗	if (ret < 0) {
1266		✗	return handle_io_open_error(s, ret, temp_filename);
1267			}
1268
1269		✗	ff_hls_write_playlist_version(c->m3u8_out, 7);
1270
1271		✗	if (c->has_video) {
1272			// treat audio streams as alternative renditions for video streams
1273		✗	const char *audio_group = "A1";
1274		✗	char audio_codec_str[128] = "\0";
1275		✗	int is_default = 1;
1276		✗	int max_audio_bitrate = 0;
1277
1278		✗	for (i = 0; i < s->nb_streams; i++) {
1279			char playlist_file[64];
1280		✗	AVStream *st = s->streams[i];
1281		✗	OutputStream *os = &c->streams[i];
1282		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1283		✗	continue;
1284		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1285		✗	continue;
1286		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1287		✗	ff_hls_write_audio_rendition(c->m3u8_out, audio_group,
1288			playlist_file, NULL, i, is_default,
1289		✗	s->streams[i]->codecpar->ch_layout.nb_channels);
1290		✗	max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1291			os->muxer_overhead, max_audio_bitrate);
1292		✗	if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1293		✗	if (strlen(audio_codec_str))
1294		✗	av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1295		✗	av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1296			}
1297		✗	is_default = 0;
1298			}
1299
1300		✗	for (i = 0; i < s->nb_streams; i++) {
1301			char playlist_file[64];
1302			char codec_str[128];
1303		✗	AVStream *st = s->streams[i];
1304		✗	OutputStream *os = &c->streams[i];
1305		✗	const char *agroup = NULL;
1306		✗	int stream_bitrate = os->muxer_overhead;
1307		✗	if (os->bit_rate > 0)
1308		✗	stream_bitrate += os->bit_rate;
1309		✗	else if (final)
1310		✗	stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1311		✗	else if (os->first_segment_bit_rate > 0)
1312		✗	stream_bitrate += os->first_segment_bit_rate;
1313		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1314		✗	continue;
1315		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1316		✗	continue;
1317		✗	av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1318		✗	if (max_audio_bitrate) {
1319		✗	agroup = audio_group;
1320		✗	stream_bitrate += max_audio_bitrate;
1321		✗	av_strlcat(codec_str, ",", sizeof(codec_str));
1322		✗	av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1323			}
1324		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1325		✗	ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1326			playlist_file, agroup,
1327			codec_str, NULL, NULL);
1328			}
1329
1330			} else {
1331			// treat audio streams as separate renditions
1332
1333		✗	for (i = 0; i < s->nb_streams; i++) {
1334			char playlist_file[64];
1335			char codec_str[128];
1336		✗	AVStream *st = s->streams[i];
1337		✗	OutputStream *os = &c->streams[i];
1338		✗	int stream_bitrate = os->muxer_overhead;
1339		✗	if (os->bit_rate > 0)
1340		✗	stream_bitrate += os->bit_rate;
1341		✗	else if (final)
1342		✗	stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1343		✗	else if (os->first_segment_bit_rate > 0)
1344		✗	stream_bitrate += os->first_segment_bit_rate;
1345		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1346		✗	continue;
1347		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1348		✗	continue;
1349		✗	av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1350		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1351		✗	ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1352			playlist_file, NULL,
1353			codec_str, NULL, NULL);
1354			}
1355			}
1356
1357		✗	dashenc_io_close(s, &c->m3u8_out, temp_filename);
1358		✗	if (use_rename)
1359		✗	if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1360		✗	return ret;
1361		✗	c->master_playlist_created = 1;
1362			}
1363
1364		✗	return 0;
1365			}
1366
1367		✗	static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1368			{
1369		✗	AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1370		✗	if (entry)
1371		✗	av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1372		✗	return 0;
1373			}
1374
1375		✗	static int dash_init(AVFormatContext *s)
1376			{
1377		✗	DASHContext *c = s->priv_data;
1378		✗	int ret = 0, i;
1379			char *ptr;
1380			char basename[1024];
1381
1382		✗	c->nr_of_streams_to_flush = 0;
1383		✗	if (c->single_file_name)
1384		✗	c->single_file = 1;
1385		✗	if (c->single_file)
1386		✗	c->use_template = 0;
1387
1388		✗	if (!c->profile) {
1389		✗	av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1390		✗	return AVERROR(EINVAL);
1391			}
1392		✗	if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1393		✗	av_log(s, AV_LOG_ERROR,
1394			"LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1395		✗	return AVERROR_EXPERIMENTAL;
1396			}
1397
1398		✗	if (c->lhls && !c->streaming) {
1399		✗	av_log(s, AV_LOG_WARNING, "Enabling streaming as LHLS is enabled\n");
1400		✗	c->streaming = 1;
1401			}
1402
1403		✗	if (c->lhls && !c->hls_playlist) {
1404		✗	av_log(s, AV_LOG_INFO, "Enabling hls_playlist as LHLS is enabled\n");
1405		✗	c->hls_playlist = 1;
1406			}
1407
1408		✗	if (c->ldash && !c->streaming) {
1409		✗	av_log(s, AV_LOG_WARNING, "Enabling streaming as LDash is enabled\n");
1410		✗	c->streaming = 1;
1411			}
1412
1413		✗	if (c->target_latency && !c->streaming) {
1414		✗	av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1415		✗	c->target_latency = 0;
1416			}
1417
1418		✗	if (c->global_sidx && !c->single_file) {
1419		✗	av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1420		✗	c->global_sidx = 0;
1421			}
1422
1423		✗	if (c->global_sidx && c->streaming) {
1424		✗	av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1425		✗	c->global_sidx = 0;
1426			}
1427		✗	if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1428		✗	av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1429		✗	c->frag_type = FRAG_TYPE_EVERY_FRAME;
1430			}
1431
1432		✗	if (c->write_prft < 0) {
1433		✗	c->write_prft = c->ldash;
1434		✗	if (c->ldash)
1435		✗	av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1436			}
1437
1438		✗	if (c->write_prft && !c->utc_timing_url) {
1439		✗	av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1440		✗	c->write_prft = 0;
1441			}
1442
1443		✗	if (c->write_prft && !c->streaming) {
1444		✗	av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1445		✗	c->write_prft = 0;
1446			}
1447
1448		✗	if (c->ldash && !c->write_prft) {
1449		✗	av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1450			}
1451
1452		✗	if (c->target_latency && !c->write_prft) {
1453		✗	av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1454		✗	c->target_latency = 0;
1455			}
1456
1457		✗	if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1458		✗	av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higher than the Maximum. Both will be ignored\n");
1459		✗	c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1460			}
1461
1462		✗	av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1463		✗	ptr = strrchr(c->dirname, '/');
1464		✗	if (ptr) {
1465		✗	av_strlcpy(basename, &ptr[1], sizeof(basename));
1466		✗	ptr[1] = '\0';
1467			} else {
1468		✗	c->dirname[0] = '\0';
1469		✗	av_strlcpy(basename, s->url, sizeof(basename));
1470			}
1471
1472		✗	ptr = strrchr(basename, '.');
1473		✗	if (ptr)
1474		✗	*ptr = '\0';
1475
1476		✗	c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1477		✗	if (!c->streams)
1478		✗	return AVERROR(ENOMEM);
1479
1480		✗	if ((ret = parse_adaptation_sets(s)) < 0)
1481		✗	return ret;
1482
1483		✗	if ((ret = init_segment_types(s)) < 0)
1484		✗	return ret;
1485
1486		✗	for (i = 0; i < s->nb_streams; i++) {
1487		✗	OutputStream *os = &c->streams[i];
1488		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
1489			AVFormatContext *ctx;
1490			AVStream *st;
1491		✗	AVDictionary *opts = NULL;
1492			char filename[1024];
1493
1494		✗	os->bit_rate = s->streams[i]->codecpar->bit_rate;
1495		✗	if (!os->bit_rate) {
1496		✗	int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1497		✗	AV_LOG_ERROR : AV_LOG_WARNING;
1498		✗	av_log(s, level, "No bit rate set for stream %d\n", i);
1499		✗	if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1500		✗	return AVERROR(EINVAL);
1501			}
1502
1503			// copy AdaptationSet language and role from stream metadata
1504		✗	dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1505		✗	dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1506
1507		✗	if (c->init_seg_name) {
1508		✗	os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1509		✗	if (!os->init_seg_name)
1510		✗	return AVERROR(ENOMEM);
1511			}
1512		✗	if (c->media_seg_name) {
1513		✗	os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1514		✗	if (!os->media_seg_name)
1515		✗	return AVERROR(ENOMEM);
1516			}
1517		✗	if (c->single_file_name) {
1518		✗	os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1519		✗	if (!os->single_file_name)
1520		✗	return AVERROR(ENOMEM);
1521			}
1522
1523		✗	if (os->segment_type == SEGMENT_TYPE_WEBM) {
1524		✗	if ((!c->single_file && !av_match_ext(os->init_seg_name, os->format_name)) ||
1525		✗	(!c->single_file && !av_match_ext(os->media_seg_name, os->format_name)) ||
1526		✗	( c->single_file && !av_match_ext(os->single_file_name, os->format_name))) {
1527		✗	av_log(s, AV_LOG_WARNING,
1528			"One or many segment file names doesn't end with .webm. "
1529			"Override -init_seg_name and/or -media_seg_name and/or "
1530			"-single_file_name to end with the extension .webm\n");
1531			}
1532		✗	if (c->streaming) {
1533			// Streaming not supported as matroskaenc buffers internally before writing the output
1534		✗	av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1535		✗	c->streaming = 0;
1536			}
1537			}
1538
1539		✗	os->ctx = ctx = avformat_alloc_context();
1540		✗	if (!ctx)
1541		✗	return AVERROR(ENOMEM);
1542
1543		✗	ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1544		✗	if (!ctx->oformat)
1545		✗	return AVERROR_MUXER_NOT_FOUND;
1546		✗	ctx->interrupt_callback = s->interrupt_callback;
1547		✗	ctx->opaque = s->opaque;
1548		✗	ctx->io_close2 = s->io_close2;
1549		✗	ctx->io_open = s->io_open;
1550		✗	ctx->strict_std_compliance = s->strict_std_compliance;
1551
1552		✗	if (!(st = avformat_new_stream(ctx, NULL)))
1553		✗	return AVERROR(ENOMEM);
1554		✗	avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1555		✗	st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1556		✗	st->time_base = s->streams[i]->time_base;
1557		✗	st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1558		✗	ctx->avoid_negative_ts = s->avoid_negative_ts;
1559		✗	ctx->flags = s->flags;
1560
1561		✗	os->parser = av_parser_init(st->codecpar->codec_id);
1562		✗	if (os->parser) {
1563		✗	os->parser_avctx = avcodec_alloc_context3(NULL);
1564		✗	if (!os->parser_avctx)
1565		✗	return AVERROR(ENOMEM);
1566		✗	ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1567		✗	if (ret < 0)
1568		✗	return ret;
1569			// We only want to parse frame headers
1570		✗	os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1571			}
1572
1573		✗	if (c->single_file) {
1574		✗	if (os->single_file_name)
1575		✗	ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1576			else
1577		✗	snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1578			} else {
1579		✗	ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1580			}
1581		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1582		✗	set_http_options(&opts, c);
1583		✗	if (!c->single_file) {
1584		✗	if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1585		✗	return ret;
1586		✗	ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1587			} else {
1588		✗	ctx->url = av_strdup(filename);
1589		✗	ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1590			}
1591		✗	av_dict_free(&opts);
1592		✗	if (ret < 0)
1593		✗	return ret;
1594		✗	os->init_start_pos = 0;
1595
1596		✗	av_dict_copy(&opts, c->format_options, 0);
1597		✗	if (!as->seg_duration)
1598		✗	as->seg_duration = c->seg_duration;
1599		✗	if (!as->frag_duration)
1600		✗	as->frag_duration = c->frag_duration;
1601		✗	if (as->frag_type < 0)
1602		✗	as->frag_type = c->frag_type;
1603		✗	os->seg_duration = as->seg_duration;
1604		✗	os->frag_duration = as->frag_duration;
1605		✗	os->frag_type = as->frag_type;
1606
1607		✗	c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1608
1609		✗	if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1610		✗	av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1611		✗	return AVERROR(EINVAL);
1612			}
1613
1614		✗	if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1615		✗	av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1616		✗	os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1617			}
1618		✗	if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1619		✗	av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1620		✗	return AVERROR(EINVAL);
1621			}
1622		✗	if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1623		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1624		✗	av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1625		✗	os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1626			}
1627		✗	if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1628			// Set this now if a parser isn't used
1629		✗	os->coding_dependency = 1;
1630
1631		✗	if (os->segment_type == SEGMENT_TYPE_MP4) {
1632		✗	if (c->streaming)
1633			// skip_sidx : Reduce bitrate overhead
1634			// skip_trailer : Avoids growing memory usage with time
1635		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1636			else {
1637		✗	if (c->global_sidx)
1638		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1639			else
1640		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1641			}
1642		✗	if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1643		✗	av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1644			else
1645		✗	av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1646		✗	if (os->frag_type == FRAG_TYPE_DURATION)
1647		✗	av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1648		✗	if (c->write_prft)
1649		✗	av_dict_set(&opts, "write_prft", "wallclock", 0);
1650			} else {
1651		✗	av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1652		✗	av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1653		✗	av_dict_set_int(&opts, "dash", 1, 0);
1654		✗	av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1655		✗	av_dict_set_int(&opts, "live", 1, 0);
1656			}
1657		✗	ret = avformat_init_output(ctx, &opts);
1658		✗	av_dict_free(&opts);
1659		✗	if (ret < 0)
1660		✗	return ret;
1661		✗	os->ctx_inited = 1;
1662		✗	avio_flush(ctx->pb);
1663
1664		✗	av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1665
1666		✗	s->streams[i]->time_base = st->time_base;
1667			// If the muxer wants to shift timestamps, request to have them shifted
1668			// already before being handed to this muxer, so we don't have mismatches
1669			// between the MPD and the actual segments.
1670		✗	s->avoid_negative_ts = ctx->avoid_negative_ts;
1671		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1672		✗	AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1673			AVRational par;
1674		✗	if (avg_frame_rate.num > 0) {
1675		✗	if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1676		✗	as->min_frame_rate = avg_frame_rate;
1677		✗	if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1678		✗	as->max_frame_rate = avg_frame_rate;
1679			} else {
1680		✗	as->ambiguous_frame_rate = 1;
1681			}
1682
1683		✗	if (st->codecpar->width > as->max_width)
1684		✗	as->max_width = st->codecpar->width;
1685		✗	if (st->codecpar->height > as->max_height)
1686		✗	as->max_height = st->codecpar->height;
1687
1688		✗	if (st->sample_aspect_ratio.num)
1689		✗	os->sar = st->sample_aspect_ratio;
1690			else
1691		✗	os->sar = (AVRational){1,1};
1692		✗	av_reduce(&par.num, &par.den,
1693		✗	st->codecpar->width * (int64_t)os->sar.num,
1694		✗	st->codecpar->height * (int64_t)os->sar.den,
1695			1024 * 1024);
1696
1697		✗	if (as->par.num && av_cmp_q(par, as->par)) {
1698		✗	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);
1699		✗	return AVERROR(EINVAL);
1700			}
1701		✗	as->par = par;
1702
1703		✗	c->has_video = 1;
1704			}
1705
1706		✗	set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1707			sizeof(os->codec_str));
1708		✗	os->first_pts = AV_NOPTS_VALUE;
1709		✗	os->max_pts = AV_NOPTS_VALUE;
1710		✗	os->last_dts = AV_NOPTS_VALUE;
1711		✗	os->segment_index = 1;
1712
1713		✗	if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1714		✗	c->nr_of_streams_to_flush++;
1715			}
1716
1717		✗	if (!c->has_video && c->seg_duration <= 0) {
1718		✗	av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1719		✗	return AVERROR(EINVAL);
1720			}
1721		✗	if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1722		✗	av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1723
1724		✗	c->nr_of_streams_flushed = 0;
1725		✗	c->target_latency_refid = -1;
1726
1727		✗	return 0;
1728			}
1729
1730		✗	static int dash_write_header(AVFormatContext *s)
1731			{
1732		✗	DASHContext *c = s->priv_data;
1733			int i, ret;
1734		✗	for (i = 0; i < s->nb_streams; i++) {
1735		✗	OutputStream *os = &c->streams[i];
1736		✗	if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1737		✗	return ret;
1738
1739			// Flush init segment
1740			// Only for WebM segment, since for mp4 delay_moov is set and
1741			// the init segment is thus flushed after the first packets.
1742		✗	if (os->segment_type == SEGMENT_TYPE_WEBM &&
1743		✗	(ret = flush_init_segment(s, os)) < 0)
1744		✗	return ret;
1745			}
1746		✗	return 0;
1747			}
1748
1749		✗	static int add_segment(OutputStream *os, const char *file,
1750			int64_t time, int64_t duration,
1751			int64_t start_pos, int64_t range_length,
1752			int64_t index_length, int next_exp_index)
1753			{
1754			int err;
1755			Segment *seg;
1756		✗	if (os->nb_segments >= os->segments_size) {
1757		✗	os->segments_size = (os->segments_size + 1) * 2;
1758		✗	if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1759		✗	os->segments_size)) < 0) {
1760		✗	os->segments_size = 0;
1761		✗	os->nb_segments = 0;
1762		✗	return err;
1763			}
1764			}
1765		✗	seg = av_mallocz(sizeof(*seg));
1766		✗	if (!seg)
1767		✗	return AVERROR(ENOMEM);
1768		✗	av_strlcpy(seg->file, file, sizeof(seg->file));
1769		✗	seg->time = time;
1770		✗	seg->duration = duration;
1771		✗	if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1772		✗	seg->duration += seg->time;
1773		✗	seg->time = 0;
1774			}
1775		✗	seg->start_pos = start_pos;
1776		✗	seg->range_length = range_length;
1777		✗	seg->index_length = index_length;
1778		✗	os->segments[os->nb_segments++] = seg;
1779		✗	os->segment_index++;
1780			//correcting the segment index if it has fallen behind the expected value
1781		✗	if (os->segment_index < next_exp_index) {
1782		✗	av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1783			file, os->segment_index, next_exp_index);
1784		✗	os->segment_index = next_exp_index;
1785			}
1786		✗	return 0;
1787			}
1788
1789		✗	static void write_styp(AVIOContext *pb)
1790			{
1791		✗	avio_wb32(pb, 24);
1792		✗	ffio_wfourcc(pb, "styp");
1793		✗	ffio_wfourcc(pb, "msdh");
1794		✗	avio_wb32(pb, 0); /* minor */
1795		✗	ffio_wfourcc(pb, "msdh");
1796		✗	ffio_wfourcc(pb, "msix");
1797		✗	}
1798
1799		✗	static void find_index_range(AVFormatContext *s, const char *full_path,
1800			int64_t pos, int *index_length)
1801			{
1802			uint8_t buf[8];
1803			AVIOContext *pb;
1804			int ret;
1805
1806		✗	ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1807		✗	if (ret < 0)
1808		✗	return;
1809		✗	if (avio_seek(pb, pos, SEEK_SET) != pos) {
1810		✗	ff_format_io_close(s, &pb);
1811		✗	return;
1812			}
1813		✗	ret = avio_read(pb, buf, 8);
1814		✗	ff_format_io_close(s, &pb);
1815		✗	if (ret < 8)
1816		✗	return;
1817		✗	if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1818		✗	return;
1819		✗	*index_length = AV_RB32(&buf[0]);
1820			}
1821
1822		✗	static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1823			AVPacket *pkt, AVRational *frame_rate)
1824			{
1825		✗	AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1826			uint8_t *extradata;
1827			size_t extradata_size;
1828			int ret;
1829
1830		✗	if (par->extradata_size)
1831		✗	return 0;
1832
1833		✗	extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1834		✗	if (!extradata_size)
1835		✗	return 0;
1836
1837		✗	ret = ff_alloc_extradata(par, extradata_size);
1838		✗	if (ret < 0)
1839		✗	return ret;
1840
1841		✗	memcpy(par->extradata, extradata, extradata_size);
1842
1843		✗	set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1844
1845		✗	return 0;
1846			}
1847
1848		✗	static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1849		✗	DASHContext *c = s->priv_data;
1850		✗	int http_base_proto = ff_is_http_proto(filename);
1851
1852		✗	if (http_base_proto) {
1853		✗	AVDictionary *http_opts = NULL;
1854
1855		✗	set_http_options(&http_opts, c);
1856		✗	av_dict_set(&http_opts, "method", "DELETE", 0);
1857
1858		✗	if (dashenc_io_open(s, &c->http_delete, filename, &http_opts) < 0) {
1859		✗	av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1860			}
1861		✗	av_dict_free(&http_opts);
1862
1863			//Nothing to write
1864		✗	dashenc_io_close(s, &c->http_delete, filename);
1865			} else {
1866		✗	int res = ffurl_delete(filename);
1867		✗	if (res < 0) {
1868			char errbuf[AV_ERROR_MAX_STRING_SIZE];
1869		✗	av_strerror(res, errbuf, sizeof(errbuf));
1870		✗	av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1871			}
1872			}
1873		✗	}
1874
1875		✗	static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1876			{
1877		✗	DASHContext *c = s->priv_data;
1878			AVBPrint buf;
1879
1880		✗	av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1881
1882		✗	av_bprintf(&buf, "%s%s", c->dirname, file);
1883		✗	if (!av_bprint_is_complete(&buf)) {
1884		✗	av_bprint_finalize(&buf, NULL);
1885		✗	av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1886		✗	return AVERROR(ENOMEM);
1887			}
1888
1889		✗	dashenc_delete_file(s, buf.str);
1890
1891		✗	av_bprint_finalize(&buf, NULL);
1892		✗	return 0;
1893			}
1894
1895		✗	static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1896			{
1897		✗	for (int i = 0; i < remove_count; ++i) {
1898		✗	dashenc_delete_segment_file(s, os->segments[i]->file);
1899
1900			// Delete the segment regardless of whether the file was successfully deleted
1901		✗	av_free(os->segments[i]);
1902			}
1903
1904		✗	os->nb_segments -= remove_count;
1905		✗	memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1906		✗	}
1907
1908		✗	static int dash_flush(AVFormatContext *s, int final, int stream)
1909			{
1910		✗	DASHContext *c = s->priv_data;
1911		✗	int i, ret = 0;
1912
1913		✗	const char *proto = avio_find_protocol_name(s->url);
1914		✗	int use_rename = proto && !strcmp(proto, "file");
1915
1916		✗	int cur_flush_segment_index = 0, next_exp_index = -1;
1917		✗	if (stream >= 0) {
1918		✗	cur_flush_segment_index = c->streams[stream].segment_index;
1919
1920			//finding the next segment's expected index, based on the current pts value
1921		✗	if (c->use_template && !c->use_timeline && c->index_correction &&
1922		✗	c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1923		✗	c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1924		✗	int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1925		✗	c->streams[stream].first_pts,
1926		✗	s->streams[stream]->time_base,
1927		✗	AV_TIME_BASE_Q);
1928		✗	next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1929			}
1930			}
1931
1932		✗	for (i = 0; i < s->nb_streams; i++) {
1933		✗	OutputStream *os = &c->streams[i];
1934		✗	AVStream *st = s->streams[i];
1935		✗	int range_length, index_length = 0;
1936			int64_t duration;
1937
1938		✗	if (!os->packets_written)
1939		✗	continue;
1940
1941			// Flush the single stream that got a keyframe right now.
1942			// Flush all audio streams as well, in sync with video keyframes,
1943			// but not the other video streams.
1944		✗	if (stream >= 0 && i != stream) {
1945		✗	if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1946		✗	s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1947		✗	continue;
1948		✗	if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1949		✗	continue;
1950			// Make sure we don't flush audio streams multiple times, when
1951			// all video streams are flushed one at a time.
1952		✗	if (c->has_video && os->segment_index > cur_flush_segment_index)
1953		✗	continue;
1954			}
1955
1956		✗	if (c->single_file)
1957		✗	snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1958
1959		✗	ret = flush_dynbuf(c, os, &range_length);
1960		✗	if (ret < 0)
1961		✗	break;
1962		✗	os->packets_written = 0;
1963
1964		✗	if (c->single_file) {
1965		✗	find_index_range(s, os->full_path, os->pos, &index_length);
1966			} else {
1967		✗	dashenc_io_close(s, &os->out, os->temp_path);
1968
1969		✗	if (use_rename) {
1970		✗	ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1971		✗	if (ret < 0)
1972		✗	break;
1973			}
1974			}
1975
1976		✗	duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1977		✗	os->last_duration = FFMAX(os->last_duration, duration);
1978
1979		✗	if (!os->muxer_overhead && os->max_pts > os->start_pts)
1980		✗	os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1981		✗	8 * AV_TIME_BASE) / duration;
1982		✗	os->total_pkt_size = 0;
1983		✗	os->total_pkt_duration = 0;
1984
1985		✗	if (!os->bit_rate && !os->first_segment_bit_rate) {
1986		✗	os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1987			}
1988		✗	add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1989		✗	av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1990
1991		✗	os->pos += range_length;
1992			}
1993
1994		✗	if (c->window_size) {
1995		✗	for (i = 0; i < s->nb_streams; i++) {
1996		✗	OutputStream *os = &c->streams[i];
1997		✗	int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1998		✗	if (remove_count > 0)
1999		✗	dashenc_delete_media_segments(s, os, remove_count);
2000			}
2001			}
2002
2003		✗	if (final) {
2004		✗	for (i = 0; i < s->nb_streams; i++) {
2005		✗	OutputStream *os = &c->streams[i];
2006		✗	if (os->ctx && os->ctx_inited) {
2007		✗	int64_t file_size = avio_tell(os->ctx->pb);
2008		✗	av_write_trailer(os->ctx);
2009		✗	if (c->global_sidx) {
2010			int j, start_index, start_number;
2011		✗	int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
2012		✗	get_start_index_number(os, c, &start_index, &start_number);
2013		✗	if (start_index >= os->nb_segments ||
2014		✗	os->segment_type != SEGMENT_TYPE_MP4)
2015		✗	continue;
2016		✗	os->init_range_length += sidx_size;
2017		✗	for (j = start_index; j < os->nb_segments; j++) {
2018		✗	Segment *seg = os->segments[j];
2019		✗	seg->start_pos += sidx_size;
2020			}
2021			}
2022
2023			}
2024			}
2025			}
2026		✗	if (ret >= 0) {
2027		✗	if (c->has_video && !final) {
2028		✗	c->nr_of_streams_flushed++;
2029		✗	if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
2030		✗	return ret;
2031
2032		✗	c->nr_of_streams_flushed = 0;
2033			}
2034			// In streaming mode the manifest is written at the beginning
2035			// of the segment instead
2036		✗	if (!c->streaming || final)
2037		✗	ret = write_manifest(s, final);
2038			}
2039		✗	return ret;
2040			}
2041
2042		✗	static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
2043			{
2044		✗	OutputStream *os = &c->streams[pkt->stream_index];
2045			AVProducerReferenceTime *prft;
2046			size_t side_data_size;
2047
2048		✗	prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
2049		✗	if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2050			// No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2051			// of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2052		✗	prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
2053			sizeof(AVProducerReferenceTime));
2054		✗	if (!prft)
2055		✗	return AVERROR(ENOMEM);
2056		✗	prft->wallclock = av_gettime();
2057		✗	prft->flags = 24;
2058			}
2059		✗	if (os->first_pts == AV_NOPTS_VALUE) {
2060		✗	os->producer_reference_time = *prft;
2061		✗	if (c->target_latency_refid < 0)
2062		✗	c->target_latency_refid = pkt->stream_index;
2063			}
2064
2065		✗	return 0;
2066			}
2067
2068		✗	static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2069			{
2070		✗	DASHContext *c = s->priv_data;
2071		✗	AVStream *st = s->streams[pkt->stream_index];
2072		✗	OutputStream *os = &c->streams[pkt->stream_index];
2073		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
2074			int64_t seg_end_duration, elapsed_duration;
2075			int ret;
2076
2077		✗	ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2078		✗	if (ret < 0)
2079		✗	return ret;
2080
2081			// Fill in a heuristic guess of the packet duration, if none is available.
2082			// The mp4 muxer will do something similar (for the last packet in a fragment)
2083			// if nothing is set (setting it for the other packets doesn't hurt).
2084			// By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2085			// invoke its heuristic (this doesn't have to be identical to that algorithm),
2086			// so that we know the exact timestamps of fragments.
2087		✗	if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2088		✗	pkt->duration = pkt->dts - os->last_dts;
2089		✗	os->last_dts = pkt->dts;
2090
2091			// If forcing the stream to start at 0, the mp4 muxer will set the start
2092			// timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2093		✗	if (os->first_pts == AV_NOPTS_VALUE &&
2094		✗	s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2095		✗	pkt->pts -= pkt->dts;
2096		✗	pkt->dts = 0;
2097			}
2098
2099		✗	if (c->write_prft) {
2100		✗	ret = dash_parse_prft(c, pkt);
2101		✗	if (ret < 0)
2102		✗	return ret;
2103			}
2104
2105		✗	if (os->first_pts == AV_NOPTS_VALUE) {
2106		✗	os->first_pts = pkt->pts;
2107			}
2108		✗	os->last_pts = pkt->pts;
2109
2110		✗	if (!c->availability_start_time[0]) {
2111		✗	int64_t start_time_us = av_gettime();
2112		✗	c->start_time_s = start_time_us / 1000000;
2113		✗	format_date(c->availability_start_time,
2114			sizeof(c->availability_start_time), start_time_us);
2115			}
2116
2117		✗	if (!os->packets_written)
2118		✗	os->availability_time_offset = 0;
2119
2120		✗	if (!os->availability_time_offset &&
2121		✗	((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2122		✗	(os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2123		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
2124		✗	int64_t frame_duration = 0;
2125
2126		✗	switch (os->frag_type) {
2127		✗	case FRAG_TYPE_DURATION:
2128		✗	frame_duration = os->frag_duration;
2129		✗	break;
2130		✗	case FRAG_TYPE_EVERY_FRAME:
2131		✗	frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2132		✗	break;
2133			}
2134
2135		✗	os->availability_time_offset = ((double) os->seg_duration -
2136		✗	frame_duration) / AV_TIME_BASE;
2137		✗	as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2138			}
2139
2140		✗	if (c->use_template && !c->use_timeline) {
2141		✗	elapsed_duration = pkt->pts - os->first_pts;
2142		✗	seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2143			} else {
2144		✗	elapsed_duration = pkt->pts - os->start_pts;
2145		✗	seg_end_duration = os->seg_duration;
2146			}
2147
2148		✗	if (os->parser &&
2149		✗	(os->frag_type == FRAG_TYPE_PFRAMES ||
2150		✗	as->trick_idx >= 0)) {
2151			// Parse the packets only in scenarios where it's needed
2152			uint8_t *data;
2153			int size;
2154		✗	av_parser_parse2(os->parser, os->parser_avctx,
2155		✗	&data, &size, pkt->data, pkt->size,
2156			pkt->pts, pkt->dts, pkt->pos);
2157
2158		✗	os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2159			}
2160
2161		✗	if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2162		✗	av_compare_ts(elapsed_duration, st->time_base,
2163		✗	seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2164		✗	if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2165		✗	c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2166			st->time_base,
2167		✗	AV_TIME_BASE_Q);
2168		✗	c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2169			st->time_base,
2170		✗	AV_TIME_BASE_Q);
2171
2172		✗	if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2173		✗	if (c->last_duration < os->last_duration*9/10 ||
2174		✗	c->last_duration > os->last_duration*11/10) {
2175		✗	av_log(s, AV_LOG_WARNING,
2176			"Segment durations differ too much, enable use_timeline "
2177			"and use_template, or keep a stricter keyframe interval\n");
2178			}
2179			}
2180			}
2181
2182		✗	if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2183		✗	format_date(os->producer_reference_time_str,
2184			sizeof(os->producer_reference_time_str),
2185			os->producer_reference_time.wallclock);
2186
2187		✗	if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2188		✗	return ret;
2189			}
2190
2191		✗	if (!os->packets_written) {
2192			// If we wrote a previous segment, adjust the start time of the segment
2193			// to the end of the previous one (which is the same as the mp4 muxer
2194			// does). This avoids gaps in the timeline.
2195		✗	if (os->max_pts != AV_NOPTS_VALUE)
2196		✗	os->start_pts = os->max_pts;
2197			else
2198		✗	os->start_pts = pkt->pts;
2199			}
2200		✗	if (os->max_pts == AV_NOPTS_VALUE)
2201		✗	os->max_pts = pkt->pts + pkt->duration;
2202			else
2203		✗	os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2204
2205		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2206		✗	os->frag_type == FRAG_TYPE_PFRAMES &&
2207		✗	os->packets_written) {
2208		✗	av_assert0(os->parser);
2209		✗	if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2210		✗	st->codecpar->video_delay &&
2211		✗	!(os->last_flags & AV_PKT_FLAG_KEY)) ||
2212		✗	pkt->flags & AV_PKT_FLAG_KEY) {
2213		✗	ret = av_write_frame(os->ctx, NULL);
2214		✗	if (ret < 0)
2215		✗	return ret;
2216
2217		✗	if (!os->availability_time_offset) {
2218		✗	int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2219		✗	AV_TIME_BASE_Q);
2220		✗	os->availability_time_offset = ((double) os->seg_duration -
2221		✗	frag_duration) / AV_TIME_BASE;
2222		✗	as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2223			}
2224			}
2225			}
2226
2227		✗	if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2228		✗	os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2229		✗	c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2230			}
2231
2232		✗	if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2233		✗	return ret;
2234
2235		✗	os->packets_written++;
2236		✗	os->total_pkt_size += pkt->size;
2237		✗	os->total_pkt_duration += pkt->duration;
2238		✗	os->last_flags = pkt->flags;
2239
2240		✗	if (!os->init_range_length)
2241		✗	flush_init_segment(s, os);
2242
2243			//open the output context when the first frame of a segment is ready
2244		✗	if (!c->single_file && os->packets_written == 1) {
2245		✗	AVDictionary *opts = NULL;
2246		✗	const char *proto = avio_find_protocol_name(s->url);
2247		✗	int use_rename = proto && !strcmp(proto, "file");
2248		✗	if (os->segment_type == SEGMENT_TYPE_MP4)
2249		✗	write_styp(os->ctx->pb);
2250		✗	os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2251		✗	ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2252			os->media_seg_name, pkt->stream_index,
2253			os->segment_index, os->bit_rate, os->start_pts);
2254		✗	snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2255		✗	os->filename);
2256		✗	snprintf(os->temp_path, sizeof(os->temp_path),
2257		✗	use_rename ? "%s.tmp" : "%s", os->full_path);
2258		✗	set_http_options(&opts, c);
2259		✗	ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2260		✗	av_dict_free(&opts);
2261		✗	if (ret < 0) {
2262		✗	return handle_io_open_error(s, ret, os->temp_path);
2263			}
2264
2265			// in streaming mode, the segments are available for playing
2266			// before fully written but the manifest is needed so that
2267			// clients and discover the segment filenames.
2268		✗	if (c->streaming) {
2269		✗	write_manifest(s, 0);
2270			}
2271
2272		✗	if (c->lhls) {
2273		✗	char *prefetch_url = use_rename ? NULL : os->filename;
2274		✗	write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2275			}
2276			}
2277
2278			//write out the data immediately in streaming mode
2279		✗	if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2280		✗	int len = 0;
2281		✗	uint8_t *buf = NULL;
2282		✗	avio_flush(os->ctx->pb);
2283		✗	len = avio_get_dyn_buf (os->ctx->pb, &buf);
2284		✗	if (os->out) {
2285		✗	avio_write(os->out, buf + os->written_len, len - os->written_len);
2286		✗	avio_flush(os->out);
2287			}
2288		✗	os->written_len = len;
2289			}
2290
2291		✗	return ret;
2292			}
2293
2294		✗	static int dash_write_trailer(AVFormatContext *s)
2295			{
2296		✗	DASHContext *c = s->priv_data;
2297			int i;
2298
2299		✗	if (s->nb_streams > 0) {
2300		✗	OutputStream *os = &c->streams[0];
2301			// If no segments have been written so far, try to do a crude
2302			// guess of the segment duration
2303		✗	if (!c->last_duration)
2304		✗	c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2305		✗	s->streams[0]->time_base,
2306		✗	AV_TIME_BASE_Q);
2307		✗	c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2308		✗	s->streams[0]->time_base,
2309		✗	AV_TIME_BASE_Q);
2310			}
2311		✗	dash_flush(s, 1, -1);
2312
2313		✗	if (c->remove_at_exit) {
2314		✗	for (i = 0; i < s->nb_streams; ++i) {
2315		✗	OutputStream *os = &c->streams[i];
2316		✗	dashenc_delete_media_segments(s, os, os->nb_segments);
2317		✗	dashenc_delete_segment_file(s, os->initfile);
2318		✗	if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2319			char filename[1024];
2320		✗	get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2321		✗	dashenc_delete_file(s, filename);
2322			}
2323			}
2324		✗	dashenc_delete_file(s, s->url);
2325
2326		✗	if (c->hls_playlist && c->master_playlist_created) {
2327			char filename[1024];
2328		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2329		✗	dashenc_delete_file(s, filename);
2330			}
2331			}
2332
2333		✗	return 0;
2334			}
2335
2336		✗	static int dash_check_bitstream(AVFormatContext *s, AVStream *st,
2337			const AVPacket *avpkt)
2338			{
2339		✗	DASHContext *c = s->priv_data;
2340		✗	OutputStream *os = &c->streams[st->index];
2341		✗	AVFormatContext *oc = os->ctx;
2342		✗	if (ffofmt(oc->oformat)->check_bitstream) {
2343		✗	AVStream *const ost = oc->streams[0];
2344			int ret;
2345		✗	ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, avpkt);
2346		✗	if (ret == 1) {
2347		✗	FFStream *const sti = ffstream(st);
2348		✗	FFStream *const osti = ffstream(ost);
2349		✗	sti->bsfc = osti->bsfc;
2350		✗	osti->bsfc = NULL;
2351			}
2352		✗	return ret;
2353			}
2354		✗	return 1;
2355			}
2356
2357			#define OFFSET(x) offsetof(DASHContext, x)
2358			#define E AV_OPT_FLAG_ENCODING_PARAM
2359			static const AVOption options[] = {
2360			{ "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 },
2361			{ "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"},
2362			{ "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, .unit = "segment_type"},
2363			{ "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, .unit = "segment_type"},
2364			{ "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, .unit = "segment_type"},
2365			{ "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 },
2366			{ "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},
2367			{ "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2368			{ "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"},
2369			{ "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, .unit = "frag_type"},
2370			{ "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, .unit = "frag_type"},
2371			{ "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, .unit = "frag_type"},
2372			{ "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"},
2373			{ "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 },
2374			{ "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2375			{ "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2376			{ "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2377			{ "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2378			{ "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2379			{ "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 },
2380			{ "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2381			{ "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 },
2382			{ "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2383			{ "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 },
2384			{ "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},
2385			{ "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2386			{ "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 },
2387			{ "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2388			{ "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2389			{ "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"},
2390			{ "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"},
2391			{ "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, .unit = "mpd_profile"},
2392			{ "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2393			{ "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2394			{ "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2395			{ "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 },
2396			{ "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2397			{ "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2398			{ "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2399			{ "update_period", "Set the mpd update interval", OFFSET(update_period), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2400			{ "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2401			{ "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2402			{ "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 },
2403			{ "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2404			{ "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2405			{ NULL },
2406			};
2407
2408			static const AVClass dash_class = {
2409			.class_name = "dash muxer",
2410			.item_name = av_default_item_name,
2411			.option = options,
2412			.version = LIBAVUTIL_VERSION_INT,
2413			};
2414
2415			const FFOutputFormat ff_dash_muxer = {
2416			.p.name = "dash",
2417			.p.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2418			.p.extensions = "mpd",
2419			.p.audio_codec = AV_CODEC_ID_AAC,
2420			.p.video_codec = AV_CODEC_ID_H264,
2421			.p.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2422			.p.priv_class = &dash_class,
2423			.priv_data_size = sizeof(DASHContext),
2424			.init = dash_init,
2425			.write_header = dash_write_header,
2426			.write_packet = dash_write_packet,
2427			.write_trailer = dash_write_trailer,
2428			.deinit = dash_free,
2429			.check_bitstream = dash_check_bitstream,
2430			};
2431