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		✗	av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
281		✗	"Unable to open %s for writing: %s\n", url, av_err2str(err));
282		✗	return c->ignore_io_errors ? 0 : err;
283			}
284
285		✗	static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
286			{
287		✗	if (segment_type == SEGMENT_TYPE_AUTO) {
288		✗	if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
289		✗	codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
290		✗	segment_type = SEGMENT_TYPE_WEBM;
291			} else {
292		✗	segment_type = SEGMENT_TYPE_MP4;
293			}
294			}
295
296		✗	return segment_type;
297			}
298
299		✗	static int init_segment_types(AVFormatContext *s)
300			{
301		✗	DASHContext *c = s->priv_data;
302		✗	int has_mp4_streams = 0;
303		✗	for (int i = 0; i < s->nb_streams; ++i) {
304		✗	OutputStream *os = &c->streams[i];
305		✗	SegmentType segment_type = select_segment_type(
306		✗	c->segment_type_option, s->streams[i]->codecpar->codec_id);
307		✗	os->segment_type = segment_type;
308		✗	os->format_name = get_format_str(segment_type);
309		✗	if (!os->format_name) {
310		✗	av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
311		✗	return AVERROR_MUXER_NOT_FOUND;
312			}
313		✗	os->extension_name = get_extension_str(segment_type, c->single_file);
314		✗	if (!os->extension_name) {
315		✗	av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
316		✗	return AVERROR_MUXER_NOT_FOUND;
317			}
318
319		✗	has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
320			}
321
322		✗	if (c->hls_playlist && !has_mp4_streams) {
323		✗	av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
324		✗	c->hls_playlist = 0;
325			}
326
327		✗	return 0;
328			}
329
330		✗	static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
331			AVRational *frame_rate, char *str, int size) {
332			VPCC vpcc;
333		✗	int ret = ff_isom_get_vpcc_features(s, par, NULL, 0, frame_rate, &vpcc);
334		✗	if (ret == 0) {
335		✗	av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
336			vpcc.profile, vpcc.level, vpcc.bitdepth);
337			} else {
338			// Default to just vp9 in case of error while finding out profile or level
339		✗	av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
340		✗	av_strlcpy(str, "vp9", size);
341			}
342		✗	return;
343			}
344
345		✗	static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
346			AVRational *frame_rate, char *str, int size)
347			{
348		✗	const AVCodecTag *tags[2] = { NULL, NULL };
349			uint32_t tag;
350			int i;
351
352			// common Webm codecs are not part of RFC 6381
353		✗	for (i = 0; codecs[i].id != AV_CODEC_ID_NONE; i++)
354		✗	if (codecs[i].id == par->codec_id) {
355		✗	if (codecs[i].id == AV_CODEC_ID_VP9) {
356		✗	set_vp9_codec_str(s, par, frame_rate, str, size);
357			} else {
358		✗	av_strlcpy(str, codecs[i].str, size);
359			}
360		✗	return;
361			}
362
363			// for codecs part of RFC 6381
364		✗	if (par->codec_type == AVMEDIA_TYPE_VIDEO)
365		✗	tags[0] = ff_codec_movvideo_tags;
366		✗	else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
367		✗	tags[0] = ff_codec_movaudio_tags;
368			else
369		✗	return;
370
371		✗	tag = par->codec_tag;
372		✗	if (!tag)
373		✗	tag = av_codec_get_tag(tags, par->codec_id);
374		✗	if (!tag)
375		✗	return;
376		✗	if (size < 5)
377		✗	return;
378
379		✗	AV_WL32(str, tag);
380		✗	str[4] = '\0';
381		✗	if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
382			uint32_t oti;
383		✗	tags[0] = ff_mp4_obj_type;
384		✗	oti = av_codec_get_tag(tags, par->codec_id);
385		✗	if (oti)
386		✗	av_strlcatf(str, size, ".%02"PRIx32, oti);
387			else
388		✗	return;
389
390		✗	if (tag == MKTAG('m', 'p', '4', 'a')) {
391		✗	if (par->extradata_size >= 2) {
392		✗	int aot = par->extradata[0] >> 3;
393		✗	if (aot == 31)
394		✗	aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
395		✗	av_strlcatf(str, size, ".%d", aot);
396			}
397		✗	} else if (tag == MKTAG('m', 'p', '4', 'v')) {
398			// Unimplemented, should output ProfileLevelIndication as a decimal number
399		✗	av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
400			}
401		✗	} else if (!strcmp(str, "avc1")) {
402		✗	uint8_t *tmpbuf = NULL;
403		✗	uint8_t *extradata = par->extradata;
404		✗	int extradata_size = par->extradata_size;
405		✗	if (!extradata_size)
406		✗	return;
407		✗	if (extradata[0] != 1) {
408			AVIOContext *pb;
409		✗	if (avio_open_dyn_buf(&pb) < 0)
410		✗	return;
411		✗	if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
412		✗	ffio_free_dyn_buf(&pb);
413		✗	return;
414			}
415		✗	extradata_size = avio_close_dyn_buf(pb, &extradata);
416		✗	tmpbuf = extradata;
417			}
418
419		✗	if (extradata_size >= 4)
420		✗	av_strlcatf(str, size, ".%02x%02x%02x",
421		✗	extradata[1], extradata[2], extradata[3]);
422		✗	av_free(tmpbuf);
423		✗	} else if (!strcmp(str, "av01")) {
424			AV1SequenceParameters seq;
425		✗	if (!par->extradata_size)
426		✗	return;
427		✗	if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
428		✗	return;
429
430		✗	av_strlcatf(str, size, ".%01u.%02u%s.%02u",
431		✗	seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
432		✗	if (seq.color_description_present_flag)
433		✗	av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
434		✗	seq.monochrome,
435		✗	seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
436		✗	seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
437		✗	seq.color_range);
438			}
439			}
440
441		✗	static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
442			{
443			uint8_t *buffer;
444
445		✗	if (!os->ctx->pb) {
446		✗	return AVERROR(EINVAL);
447			}
448
449			// flush
450		✗	av_write_frame(os->ctx, NULL);
451		✗	avio_flush(os->ctx->pb);
452
453		✗	if (!c->single_file) {
454			// write out to file
455		✗	*range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
456		✗	os->ctx->pb = NULL;
457		✗	if (os->out)
458		✗	avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
459		✗	os->written_len = 0;
460		✗	av_free(buffer);
461
462			// re-open buffer
463		✗	return avio_open_dyn_buf(&os->ctx->pb);
464			} else {
465		✗	*range_length = avio_tell(os->ctx->pb) - os->pos;
466		✗	return 0;
467			}
468			}
469
470		✗	static void set_http_options(AVDictionary **options, DASHContext *c)
471			{
472		✗	if (c->method)
473		✗	av_dict_set(options, "method", c->method, 0);
474		✗	av_dict_copy(options, c->http_opts, 0);
475		✗	if (c->user_agent)
476		✗	av_dict_set(options, "user_agent", c->user_agent, 0);
477		✗	if (c->http_persistent)
478		✗	av_dict_set_int(options, "multiple_requests", 1, 0);
479		✗	if (c->timeout >= 0)
480		✗	av_dict_set_int(options, "timeout", c->timeout, 0);
481		✗	}
482
483		✗	static void get_hls_playlist_name(char *playlist_name, int string_size,
484			const char *base_url, int id) {
485		✗	if (base_url)
486		✗	snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
487			else
488		✗	snprintf(playlist_name, string_size, "media_%d.m3u8", id);
489		✗	}
490
491		✗	static void get_start_index_number(OutputStream *os, DASHContext *c,
492			int *start_index, int *start_number) {
493		✗	*start_index = 0;
494		✗	*start_number = 1;
495		✗	if (c->window_size) {
496		✗	*start_index = FFMAX(os->nb_segments - c->window_size, 0);
497		✗	*start_number = FFMAX(os->segment_index - c->window_size, 1);
498			}
499		✗	}
500
501		✗	static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
502			int representation_id, int final,
503			char *prefetch_url) {
504		✗	DASHContext *c = s->priv_data;
505		✗	int timescale = os->ctx->streams[0]->time_base.den;
506			char temp_filename_hls[1024];
507			char filename_hls[1024];
508		✗	AVDictionary *http_opts = NULL;
509		✗	int target_duration = 0;
510		✗	int ret = 0;
511		✗	const char *proto = avio_find_protocol_name(c->dirname);
512		✗	int use_rename = proto && !strcmp(proto, "file");
513			int i, start_index, start_number;
514		✗	double prog_date_time = 0;
515
516		✗	get_start_index_number(os, c, &start_index, &start_number);
517
518		✗	if (!c->hls_playlist || start_index >= os->nb_segments ||
519		✗	os->segment_type != SEGMENT_TYPE_MP4)
520		✗	return;
521
522		✗	get_hls_playlist_name(filename_hls, sizeof(filename_hls),
523		✗	c->dirname, representation_id);
524
525		✗	snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
526
527		✗	set_http_options(&http_opts, c);
528		✗	ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
529		✗	av_dict_free(&http_opts);
530		✗	if (ret < 0) {
531		✗	handle_io_open_error(s, ret, temp_filename_hls);
532		✗	return;
533			}
534		✗	for (i = start_index; i < os->nb_segments; i++) {
535		✗	Segment *seg = os->segments[i];
536		✗	double duration = (double) seg->duration / timescale;
537		✗	if (target_duration <= duration)
538		✗	target_duration = lrint(duration);
539			}
540
541		✗	ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
542			start_number, PLAYLIST_TYPE_NONE, 0);
543
544		✗	ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
545		✗	os->init_range_length, os->init_start_pos);
546
547		✗	for (i = start_index; i < os->nb_segments; i++) {
548		✗	Segment *seg = os->segments[i];
549
550		✗	if (fabs(prog_date_time) < 1e-7) {
551		✗	if (os->nb_segments == 1)
552		✗	prog_date_time = c->start_time_s;
553			else
554		✗	prog_date_time = seg->prog_date_time;
555			}
556		✗	seg->prog_date_time = prog_date_time;
557
558		✗	ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
559		✗	(double) seg->duration / timescale, 0,
560		✗	seg->range_length, seg->start_pos, NULL,
561		✗	c->single_file ? os->initfile : seg->file,
562			&prog_date_time, 0, 0, 0);
563		✗	if (ret < 0) {
564		✗	av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
565			}
566			}
567
568		✗	if (prefetch_url)
569		✗	avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
570
571		✗	if (final)
572		✗	ff_hls_write_end_list(c->m3u8_out);
573
574		✗	dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
575
576		✗	if (use_rename)
577		✗	ff_rename(temp_filename_hls, filename_hls, os->ctx);
578			}
579
580		✗	static int flush_init_segment(AVFormatContext *s, OutputStream *os)
581			{
582		✗	DASHContext *c = s->priv_data;
583			int ret, range_length;
584
585		✗	ret = flush_dynbuf(c, os, &range_length);
586		✗	if (ret < 0)
587		✗	return ret;
588
589		✗	os->pos = os->init_range_length = range_length;
590		✗	if (!c->single_file) {
591			char filename[1024];
592		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
593		✗	dashenc_io_close(s, &os->out, filename);
594			}
595		✗	return 0;
596			}
597
598		✗	static void dash_free(AVFormatContext *s)
599			{
600		✗	DASHContext *c = s->priv_data;
601			int i, j;
602
603		✗	if (c->as) {
604		✗	for (i = 0; i < c->nb_as; i++) {
605		✗	av_dict_free(&c->as[i].metadata);
606		✗	av_freep(&c->as[i].descriptor);
607			}
608		✗	av_freep(&c->as);
609		✗	c->nb_as = 0;
610			}
611
612		✗	if (!c->streams)
613		✗	return;
614		✗	for (i = 0; i < s->nb_streams; i++) {
615		✗	OutputStream *os = &c->streams[i];
616		✗	if (os->ctx && os->ctx->pb) {
617		✗	if (!c->single_file)
618		✗	ffio_free_dyn_buf(&os->ctx->pb);
619			else
620		✗	avio_close(os->ctx->pb);
621			}
622		✗	ff_format_io_close(s, &os->out);
623		✗	avformat_free_context(os->ctx);
624		✗	avcodec_free_context(&os->parser_avctx);
625		✗	av_parser_close(os->parser);
626		✗	for (j = 0; j < os->nb_segments; j++)
627		✗	av_free(os->segments[j]);
628		✗	av_free(os->segments);
629		✗	av_freep(&os->single_file_name);
630		✗	av_freep(&os->init_seg_name);
631		✗	av_freep(&os->media_seg_name);
632			}
633		✗	av_freep(&c->streams);
634
635		✗	ff_format_io_close(s, &c->mpd_out);
636		✗	ff_format_io_close(s, &c->m3u8_out);
637		✗	ff_format_io_close(s, &c->http_delete);
638			}
639
640		✗	static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
641			int representation_id, int final)
642			{
643		✗	DASHContext *c = s->priv_data;
644			int i, start_index, start_number;
645		✗	get_start_index_number(os, c, &start_index, &start_number);
646
647		✗	if (c->use_template) {
648		✗	int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
649		✗	avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
650		✗	if (!c->use_timeline) {
651		✗	avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
652		✗	if (c->streaming && os->availability_time_offset)
653		✗	avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
654			os->availability_time_offset);
655			}
656		✗	if (c->streaming && os->availability_time_offset && !final)
657		✗	avio_printf(out, "availabilityTimeComplete=\"false\" ");
658
659		✗	avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
660		✗	if (c->presentation_time_offset)
661		✗	avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
662		✗	avio_printf(out, ">\n");
663		✗	if (c->use_timeline) {
664		✗	int64_t cur_time = 0;
665		✗	avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
666		✗	for (i = start_index; i < os->nb_segments; ) {
667		✗	Segment *seg = os->segments[i];
668		✗	int repeat = 0;
669		✗	avio_printf(out, "\t\t\t\t\t\t<S ");
670		✗	if (i == start_index || seg->time != cur_time) {
671		✗	cur_time = seg->time;
672		✗	avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
673			}
674		✗	avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
675		✗	while (i + repeat + 1 < os->nb_segments &&
676		✗	os->segments[i + repeat + 1]->duration == seg->duration &&
677		✗	os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
678		✗	repeat++;
679		✗	if (repeat > 0)
680		✗	avio_printf(out, "r=\"%d\" ", repeat);
681		✗	avio_printf(out, "/>\n");
682		✗	i += 1 + repeat;
683		✗	cur_time += (1 + repeat) * seg->duration;
684			}
685		✗	avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
686			}
687		✗	avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
688		✗	} else if (c->single_file) {
689		✗	avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
690		✗	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);
691		✗	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);
692		✗	for (i = start_index; i < os->nb_segments; i++) {
693		✗	Segment *seg = os->segments[i];
694		✗	avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
695		✗	if (seg->index_length)
696		✗	avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
697		✗	avio_printf(out, "/>\n");
698			}
699		✗	avio_printf(out, "\t\t\t\t</SegmentList>\n");
700			} else {
701		✗	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);
702		✗	avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
703		✗	for (i = start_index; i < os->nb_segments; i++) {
704		✗	Segment *seg = os->segments[i];
705		✗	avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
706			}
707		✗	avio_printf(out, "\t\t\t\t</SegmentList>\n");
708			}
709		✗	if (!c->lhls || final) {
710		✗	write_hls_media_playlist(os, s, representation_id, final, NULL);
711			}
712
713		✗	}
714
715		✗	static char *xmlescape(const char *str) {
716		✗	int outlen = strlen(str)*3/2 + 6;
717		✗	char *out = av_realloc(NULL, outlen + 1);
718		✗	int pos = 0;
719		✗	if (!out)
720		✗	return NULL;
721		✗	for (; *str; str++) {
722		✗	if (pos + 6 > outlen) {
723			char *tmp;
724		✗	outlen = 2 * outlen + 6;
725		✗	tmp = av_realloc(out, outlen + 1);
726		✗	if (!tmp) {
727		✗	av_free(out);
728		✗	return NULL;
729			}
730		✗	out = tmp;
731			}
732		✗	if (*str == '&') {
733		✗	memcpy(&out[pos], "&amp;", 5);
734		✗	pos += 5;
735		✗	} else if (*str == '<') {
736		✗	memcpy(&out[pos], "&lt;", 4);
737		✗	pos += 4;
738		✗	} else if (*str == '>') {
739		✗	memcpy(&out[pos], "&gt;", 4);
740		✗	pos += 4;
741		✗	} else if (*str == '\'') {
742		✗	memcpy(&out[pos], "&apos;", 6);
743		✗	pos += 6;
744		✗	} else if (*str == '\"') {
745		✗	memcpy(&out[pos], "&quot;", 6);
746		✗	pos += 6;
747			} else {
748		✗	out[pos++] = *str;
749			}
750			}
751		✗	out[pos] = '\0';
752		✗	return out;
753			}
754
755		✗	static void write_time(AVIOContext *out, int64_t time)
756			{
757		✗	int seconds = time / AV_TIME_BASE;
758		✗	int fractions = time % AV_TIME_BASE;
759		✗	int minutes = seconds / 60;
760		✗	int hours = minutes / 60;
761		✗	seconds %= 60;
762		✗	minutes %= 60;
763		✗	avio_printf(out, "PT");
764		✗	if (hours)
765		✗	avio_printf(out, "%dH", hours);
766		✗	if (hours || minutes)
767		✗	avio_printf(out, "%dM", minutes);
768		✗	avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
769		✗	}
770
771		✗	static void format_date(char *buf, int size, int64_t time_us)
772			{
773			struct tm *ptm, tmbuf;
774		✗	int64_t time_ms = time_us / 1000;
775		✗	const time_t time_s = time_ms / 1000;
776		✗	int millisec = time_ms - (time_s * 1000);
777		✗	ptm = gmtime_r(&time_s, &tmbuf);
778		✗	if (ptm) {
779			int len;
780		✗	if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
781		✗	buf[0] = '\0';
782		✗	return;
783			}
784		✗	len = strlen(buf);
785		✗	snprintf(buf + len, size - len, ".%03dZ", millisec);
786			}
787			}
788
789		✗	static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
790			int final)
791			{
792		✗	DASHContext *c = s->priv_data;
793		✗	AdaptationSet *as = &c->as[as_index];
794			AVDictionaryEntry *lang, *role;
795			int i;
796
797		✗	avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
798		✗	as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
799		✗	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)
800		✗	avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
801		✗	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))
802		✗	avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
803		✗	if (as->media_type == AVMEDIA_TYPE_VIDEO) {
804		✗	avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
805		✗	avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
806			}
807		✗	lang = av_dict_get(as->metadata, "language", NULL, 0);
808		✗	if (lang)
809		✗	avio_printf(out, " lang=\"%s\"", lang->value);
810		✗	avio_printf(out, ">\n");
811
812		✗	if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
813		✗	avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
814		✗	if (as->trick_idx >= 0)
815		✗	avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
816		✗	role = av_dict_get(as->metadata, "role", NULL, 0);
817		✗	if (role)
818		✗	avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
819		✗	if (as->descriptor)
820		✗	avio_printf(out, "\t\t\t%s\n", as->descriptor);
821		✗	for (i = 0; i < s->nb_streams; i++) {
822		✗	AVStream *st = s->streams[i];
823		✗	OutputStream *os = &c->streams[i];
824		✗	char bandwidth_str[64] = {'\0'};
825
826		✗	if (os->as_idx - 1 != as_index)
827		✗	continue;
828
829		✗	if (os->bit_rate > 0)
830		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->bit_rate);
831		✗	else if (final) {
832		✗	int average_bit_rate = os->pos * 8 * AV_TIME_BASE / c->total_duration;
833		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
834		✗	} else if (os->first_segment_bit_rate > 0)
835		✗	snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
836
837		✗	if (as->media_type == AVMEDIA_TYPE_VIDEO) {
838		✗	avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
839		✗	i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
840		✗	if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
841		✗	avio_printf(out, " scanType=\"unknown\"");
842		✗	else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
843		✗	avio_printf(out, " scanType=\"interlaced\"");
844		✗	avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
845		✗	if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
846		✗	avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
847		✗	if (as->trick_idx >= 0) {
848		✗	AdaptationSet *tas = &c->as[as->trick_idx];
849		✗	if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
850		✗	avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
851			}
852		✗	if (!os->coding_dependency)
853		✗	avio_printf(out, " codingDependency=\"false\"");
854		✗	avio_printf(out, ">\n");
855			} else {
856		✗	avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
857		✗	i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
858		✗	avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
859		✗	s->streams[i]->codecpar->ch_layout.nb_channels);
860			}
861		✗	if (!final && c->write_prft && os->producer_reference_time_str[0]) {
862		✗	avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
863		✗	i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
864		✗	avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
865		✗	avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
866			}
867		✗	if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
868		✗	(os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
869		✗	avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
870		✗	output_segment_list(os, out, s, i, final);
871		✗	avio_printf(out, "\t\t\t</Representation>\n");
872			}
873		✗	avio_printf(out, "\t\t</AdaptationSet>\n");
874
875		✗	return 0;
876			}
877
878		✗	static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
879			{
880		✗	DASHContext *c = s->priv_data;
881			void *mem;
882
883		✗	if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
884		✗	av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
885		✗	return AVERROR(EINVAL);
886			}
887		✗	mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
888		✗	if (!mem)
889		✗	return AVERROR(ENOMEM);
890		✗	c->as = mem;
891		✗	++c->nb_as;
892
893		✗	*as = &c->as[c->nb_as - 1];
894		✗	memset(*as, 0, sizeof(**as));
895		✗	(*as)->media_type = type;
896		✗	(*as)->frag_type = -1;
897		✗	(*as)->trick_idx = -1;
898
899		✗	return 0;
900			}
901
902		✗	static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
903			{
904		✗	DASHContext *c = s->priv_data;
905		✗	AdaptationSet *as = &c->as[as_idx - 1];
906		✗	OutputStream *os = &c->streams[i];
907
908		✗	if (as->media_type != s->streams[i]->codecpar->codec_type) {
909		✗	av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
910		✗	return AVERROR(EINVAL);
911		✗	} else if (os->as_idx) {
912		✗	av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
913		✗	return AVERROR(EINVAL);
914			}
915		✗	if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
916		✗	av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
917		✗	return AVERROR(EINVAL);
918			}
919		✗	os->as_idx = as_idx;
920		✗	++as->nb_streams;
921
922		✗	return 0;
923			}
924
925		✗	static int parse_adaptation_sets(AVFormatContext *s)
926			{
927		✗	DASHContext *c = s->priv_data;
928		✗	const char *p = c->adaptation_sets;
929			enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
930			AdaptationSet *as;
931			int i, n, ret;
932
933			// default: one AdaptationSet for each stream
934		✗	if (!p) {
935		✗	for (i = 0; i < s->nb_streams; i++) {
936		✗	if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
937		✗	return ret;
938		✗	as->id = i;
939
940		✗	c->streams[i].as_idx = c->nb_as;
941		✗	++as->nb_streams;
942			}
943		✗	goto end;
944			}
945
946			// syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
947			// option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
948			// option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
949			// id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
950			// descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
951			// descriptor_str should be a self-closing xml tag.
952			// seg_duration and frag_duration have the same syntax as the global options of
953			// the same name, and the former have precedence over them if set.
954		✗	state = new_set;
955		✗	while (*p) {
956		✗	if (*p == ' ') {
957		✗	p++;
958		✗	continue;
959		✗	} else if (state == new_set && av_strstart(p, "id=", &p)) {
960			char id_str[10], *end_str;
961
962		✗	n = strcspn(p, ",");
963		✗	snprintf(id_str, sizeof(id_str), "%.*s", n, p);
964
965		✗	i = strtol(id_str, &end_str, 10);
966		✗	if (id_str == end_str || i < 0 || i > c->nb_as) {
967		✗	av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
968		✗	return AVERROR(EINVAL);
969			}
970
971		✗	if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
972		✗	return ret;
973		✗	as->id = i;
974
975		✗	p += n;
976		✗	if (*p)
977		✗	p++;
978		✗	state = parse_default;
979		✗	} else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
980		✗	state = parse_seg_duration;
981		✗	} else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
982		✗	state = parse_frag_duration;
983		✗	} else if (state == parse_seg_duration || state == parse_frag_duration) {
984			char str[32];
985		✗	int64_t usecs = 0;
986
987		✗	n = strcspn(p, ",");
988		✗	snprintf(str, sizeof(str), "%.*s", n, p);
989		✗	p += n;
990		✗	if (*p)
991		✗	p++;
992
993		✗	ret = av_parse_time(&usecs, str, 1);
994		✗	if (ret < 0) {
995		✗	av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
996		✗	return ret;
997			}
998
999		✗	if (state == parse_seg_duration)
1000		✗	as->seg_duration = usecs;
1001			else
1002		✗	as->frag_duration = usecs;
1003		✗	state = parse_default;
1004		✗	} else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1005			char type_str[16];
1006
1007		✗	n = strcspn(p, ",");
1008		✗	snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1009		✗	p += n;
1010		✗	if (*p)
1011		✗	p++;
1012
1013		✗	if (!strcmp(type_str, "duration"))
1014		✗	as->frag_type = FRAG_TYPE_DURATION;
1015		✗	else if (!strcmp(type_str, "pframes"))
1016		✗	as->frag_type = FRAG_TYPE_PFRAMES;
1017		✗	else if (!strcmp(type_str, "every_frame"))
1018		✗	as->frag_type = FRAG_TYPE_EVERY_FRAME;
1019		✗	else if (!strcmp(type_str, "none"))
1020		✗	as->frag_type = FRAG_TYPE_NONE;
1021			else {
1022		✗	av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1023		✗	return ret;
1024			}
1025		✗	state = parse_default;
1026		✗	} else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1027		✗	n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1028		✗	if (n < strlen(p)) {
1029		✗	as->descriptor = av_strndup(p, n);
1030			} else {
1031		✗	av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1032		✗	return AVERROR(EINVAL);
1033			}
1034		✗	p += n;
1035		✗	if (*p)
1036		✗	p++;
1037		✗	state = parse_default;
1038		✗	} else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1039			char trick_id_str[10], *end_str;
1040
1041		✗	n = strcspn(p, ",");
1042		✗	snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1043		✗	p += n;
1044
1045		✗	as->trick_idx = strtol(trick_id_str, &end_str, 10);
1046		✗	if (trick_id_str == end_str || as->trick_idx < 0)
1047		✗	return AVERROR(EINVAL);
1048
1049		✗	if (*p)
1050		✗	p++;
1051		✗	state = parse_default;
1052		✗	} else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1053		✗	state = parsing_streams;
1054		✗	} else if (state == parsing_streams) {
1055		✗	AdaptationSet *as = &c->as[c->nb_as - 1];
1056			char idx_str[8], *end_str;
1057
1058		✗	n = strcspn(p, " ,");
1059		✗	snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1060		✗	p += n;
1061
1062			// if value is "a" or "v", map all streams of that type
1063		✗	if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1064		✗	enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1065		✗	av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1066
1067		✗	for (i = 0; i < s->nb_streams; i++) {
1068		✗	if (s->streams[i]->codecpar->codec_type != type)
1069		✗	continue;
1070
1071		✗	as->media_type = s->streams[i]->codecpar->codec_type;
1072
1073		✗	if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1074		✗	return ret;
1075			}
1076			} else { // select single stream
1077		✗	i = strtol(idx_str, &end_str, 10);
1078		✗	if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1079		✗	av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1080		✗	return AVERROR(EINVAL);
1081			}
1082		✗	av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1083
1084		✗	if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1085		✗	as->media_type = s->streams[i]->codecpar->codec_type;
1086			}
1087
1088		✗	if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1089		✗	return ret;
1090			}
1091
1092		✗	if (*p == ' ')
1093		✗	state = new_set;
1094		✗	if (*p)
1095		✗	p++;
1096			} else {
1097		✗	return AVERROR(EINVAL);
1098			}
1099			}
1100
1101		✗	end:
1102			// check for unassigned streams
1103		✗	for (i = 0; i < s->nb_streams; i++) {
1104		✗	OutputStream *os = &c->streams[i];
1105		✗	if (!os->as_idx) {
1106		✗	av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1107		✗	return AVERROR(EINVAL);
1108			}
1109			}
1110
1111			// check references for trick mode AdaptationSet
1112		✗	for (i = 0; i < c->nb_as; i++) {
1113		✗	as = &c->as[i];
1114		✗	if (as->trick_idx < 0)
1115		✗	continue;
1116		✗	for (n = 0; n < c->nb_as; n++) {
1117		✗	if (c->as[n].id == as->trick_idx)
1118		✗	break;
1119			}
1120		✗	if (n >= c->nb_as) {
1121		✗	av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1122		✗	return AVERROR(EINVAL);
1123			}
1124			}
1125
1126		✗	return 0;
1127			}
1128
1129		✗	static int write_manifest(AVFormatContext *s, int final)
1130			{
1131		✗	DASHContext *c = s->priv_data;
1132			AVIOContext *out;
1133			char temp_filename[1024];
1134			int ret, i;
1135		✗	const char *proto = avio_find_protocol_name(s->url);
1136		✗	int use_rename = proto && !strcmp(proto, "file");
1137			static unsigned int warned_non_file = 0;
1138		✗	AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1139		✗	AVDictionary *opts = NULL;
1140
1141		✗	if (!use_rename && !warned_non_file++)
1142		✗	av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1143
1144		✗	snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1145		✗	set_http_options(&opts, c);
1146		✗	ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1147		✗	av_dict_free(&opts);
1148		✗	if (ret < 0) {
1149		✗	return handle_io_open_error(s, ret, temp_filename);
1150			}
1151		✗	out = c->mpd_out;
1152		✗	avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1153		✗	avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1154			"\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1155			"\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1156			"\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1157			"\tprofiles=\"");
1158		✗	if (c->profile & MPD_PROFILE_DASH)
1159		✗	avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1160		✗	if (c->profile & MPD_PROFILE_DVB)
1161		✗	avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1162		✗	avio_printf(out, "\ttype=\"%s\"\n",
1163			final ? "static" : "dynamic");
1164		✗	if (final) {
1165		✗	avio_printf(out, "\tmediaPresentationDuration=\"");
1166		✗	write_time(out, c->total_duration);
1167		✗	avio_printf(out, "\"\n");
1168			} else {
1169		✗	int64_t update_period = c->last_duration / AV_TIME_BASE;
1170			char now_str[100];
1171		✗	if (c->use_template && !c->use_timeline)
1172		✗	update_period = 500;
1173		✗	if (c->update_period)
1174		✗	update_period = c->update_period;
1175		✗	avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1176		✗	if (!c->ldash)
1177		✗	avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1178		✗	if (c->availability_start_time[0])
1179		✗	avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1180		✗	format_date(now_str, sizeof(now_str), av_gettime());
1181		✗	if (now_str[0])
1182		✗	avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1183		✗	if (c->window_size && c->use_template) {
1184		✗	avio_printf(out, "\ttimeShiftBufferDepth=\"");
1185		✗	write_time(out, c->last_duration * c->window_size);
1186		✗	avio_printf(out, "\"\n");
1187			}
1188			}
1189		✗	avio_printf(out, "\tmaxSegmentDuration=\"");
1190		✗	write_time(out, c->max_segment_duration);
1191		✗	avio_printf(out, "\"\n");
1192		✗	avio_printf(out, "\tminBufferTime=\"");
1193		✗	write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1194		✗	avio_printf(out, "\">\n");
1195		✗	avio_printf(out, "\t<ProgramInformation>\n");
1196		✗	if (title) {
1197		✗	char *escaped = xmlescape(title->value);
1198		✗	avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1199		✗	av_free(escaped);
1200			}
1201		✗	avio_printf(out, "\t</ProgramInformation>\n");
1202
1203		✗	avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1204		✗	if (!final && c->target_latency && c->target_latency_refid >= 0) {
1205		✗	avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1206		✗	if (s->nb_streams > 1)
1207		✗	avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1208		✗	avio_printf(out, "/>\n");
1209			}
1210		✗	if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1211		✗	av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1212		✗	avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1213			av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1214		✗	avio_printf(out, "\t</ServiceDescription>\n");
1215
1216		✗	if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1217		✗	OutputStream *os = &c->streams[0];
1218		✗	int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1219		✗	int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1220		✗	avio_printf(out, "\t<Period id=\"0\" start=\"");
1221		✗	write_time(out, start_time);
1222		✗	avio_printf(out, "\">\n");
1223			} else {
1224		✗	avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1225			}
1226
1227		✗	for (i = 0; i < c->nb_as; i++) {
1228		✗	if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1229		✗	return ret;
1230			}
1231		✗	avio_printf(out, "\t</Period>\n");
1232
1233		✗	if (c->utc_timing_url)
1234		✗	avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1235
1236		✗	avio_printf(out, "</MPD>\n");
1237		✗	avio_flush(out);
1238		✗	dashenc_io_close(s, &c->mpd_out, temp_filename);
1239
1240		✗	if (use_rename) {
1241		✗	if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1242		✗	return ret;
1243			}
1244
1245		✗	if (c->hls_playlist) {
1246			char filename_hls[1024];
1247
1248			// Publish master playlist only the configured rate
1249		✗	if (c->master_playlist_created && (!c->master_publish_rate ||
1250		✗	c->streams[0].segment_index % c->master_publish_rate))
1251		✗	return 0;
1252
1253		✗	if (*c->dirname)
1254		✗	snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1255			else
1256		✗	snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1257
1258		✗	snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1259
1260		✗	set_http_options(&opts, c);
1261		✗	ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1262		✗	av_dict_free(&opts);
1263		✗	if (ret < 0) {
1264		✗	return handle_io_open_error(s, ret, temp_filename);
1265			}
1266
1267		✗	ff_hls_write_playlist_version(c->m3u8_out, 7);
1268
1269		✗	if (c->has_video) {
1270			// treat audio streams as alternative renditions for video streams
1271		✗	const char *audio_group = "A1";
1272		✗	char audio_codec_str[128] = "\0";
1273		✗	int is_default = 1;
1274		✗	int max_audio_bitrate = 0;
1275
1276		✗	for (i = 0; i < s->nb_streams; i++) {
1277			char playlist_file[64];
1278		✗	AVStream *st = s->streams[i];
1279		✗	OutputStream *os = &c->streams[i];
1280		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1281		✗	continue;
1282		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1283		✗	continue;
1284		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1285		✗	ff_hls_write_audio_rendition(c->m3u8_out, audio_group,
1286			playlist_file, NULL, i, is_default,
1287		✗	s->streams[i]->codecpar->ch_layout.nb_channels);
1288		✗	max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1289			os->muxer_overhead, max_audio_bitrate);
1290		✗	if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1291		✗	if (strlen(audio_codec_str))
1292		✗	av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1293		✗	av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1294			}
1295		✗	is_default = 0;
1296			}
1297
1298		✗	for (i = 0; i < s->nb_streams; i++) {
1299			char playlist_file[64];
1300			char codec_str[128];
1301		✗	AVStream *st = s->streams[i];
1302		✗	OutputStream *os = &c->streams[i];
1303		✗	const char *agroup = NULL;
1304		✗	int stream_bitrate = os->muxer_overhead;
1305		✗	if (os->bit_rate > 0)
1306		✗	stream_bitrate += os->bit_rate;
1307		✗	else if (final)
1308		✗	stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1309		✗	else if (os->first_segment_bit_rate > 0)
1310		✗	stream_bitrate += os->first_segment_bit_rate;
1311		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1312		✗	continue;
1313		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1314		✗	continue;
1315		✗	av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1316		✗	if (max_audio_bitrate) {
1317		✗	agroup = audio_group;
1318		✗	stream_bitrate += max_audio_bitrate;
1319		✗	av_strlcat(codec_str, ",", sizeof(codec_str));
1320		✗	av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1321			}
1322		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1323		✗	ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1324			playlist_file, agroup,
1325			codec_str, NULL, NULL);
1326			}
1327
1328			} else {
1329			// treat audio streams as separate renditions
1330
1331		✗	for (i = 0; i < s->nb_streams; i++) {
1332			char playlist_file[64];
1333			char codec_str[128];
1334		✗	AVStream *st = s->streams[i];
1335		✗	OutputStream *os = &c->streams[i];
1336		✗	int stream_bitrate = os->muxer_overhead;
1337		✗	if (os->bit_rate > 0)
1338		✗	stream_bitrate += os->bit_rate;
1339		✗	else if (final)
1340		✗	stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1341		✗	else if (os->first_segment_bit_rate > 0)
1342		✗	stream_bitrate += os->first_segment_bit_rate;
1343		✗	if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1344		✗	continue;
1345		✗	if (os->segment_type != SEGMENT_TYPE_MP4)
1346		✗	continue;
1347		✗	av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1348		✗	get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1349		✗	ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate, 0,
1350			playlist_file, NULL,
1351			codec_str, NULL, NULL);
1352			}
1353			}
1354
1355		✗	dashenc_io_close(s, &c->m3u8_out, temp_filename);
1356		✗	if (use_rename)
1357		✗	if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1358		✗	return ret;
1359		✗	c->master_playlist_created = 1;
1360			}
1361
1362		✗	return 0;
1363			}
1364
1365		✗	static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1366			{
1367		✗	AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1368		✗	if (entry)
1369		✗	av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1370		✗	return 0;
1371			}
1372
1373		✗	static int dash_init(AVFormatContext *s)
1374			{
1375		✗	DASHContext *c = s->priv_data;
1376		✗	int ret = 0, i;
1377			char *ptr;
1378			char basename[1024];
1379
1380		✗	c->nr_of_streams_to_flush = 0;
1381		✗	if (c->single_file_name)
1382		✗	c->single_file = 1;
1383		✗	if (c->single_file)
1384		✗	c->use_template = 0;
1385
1386		✗	if (!c->profile) {
1387		✗	av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1388		✗	return AVERROR(EINVAL);
1389			}
1390		✗	if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1391		✗	av_log(s, AV_LOG_ERROR,
1392			"LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1393		✗	return AVERROR_EXPERIMENTAL;
1394			}
1395
1396		✗	if (c->lhls && !c->streaming) {
1397		✗	av_log(s, AV_LOG_WARNING, "Enabling streaming as LHLS is enabled\n");
1398		✗	c->streaming = 1;
1399			}
1400
1401		✗	if (c->lhls && !c->hls_playlist) {
1402		✗	av_log(s, AV_LOG_INFO, "Enabling hls_playlist as LHLS is enabled\n");
1403		✗	c->hls_playlist = 1;
1404			}
1405
1406		✗	if (c->ldash && !c->streaming) {
1407		✗	av_log(s, AV_LOG_WARNING, "Enabling streaming as LDash is enabled\n");
1408		✗	c->streaming = 1;
1409			}
1410
1411		✗	if (c->target_latency && !c->streaming) {
1412		✗	av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1413		✗	c->target_latency = 0;
1414			}
1415
1416		✗	if (c->global_sidx && !c->single_file) {
1417		✗	av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1418		✗	c->global_sidx = 0;
1419			}
1420
1421		✗	if (c->global_sidx && c->streaming) {
1422		✗	av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1423		✗	c->global_sidx = 0;
1424			}
1425		✗	if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1426		✗	av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1427		✗	c->frag_type = FRAG_TYPE_EVERY_FRAME;
1428			}
1429
1430		✗	if (c->write_prft < 0) {
1431		✗	c->write_prft = c->ldash;
1432		✗	if (c->ldash)
1433		✗	av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1434			}
1435
1436		✗	if (c->write_prft && !c->utc_timing_url) {
1437		✗	av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1438		✗	c->write_prft = 0;
1439			}
1440
1441		✗	if (c->write_prft && !c->streaming) {
1442		✗	av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1443		✗	c->write_prft = 0;
1444			}
1445
1446		✗	if (c->ldash && !c->write_prft) {
1447		✗	av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1448			}
1449
1450		✗	if (c->target_latency && !c->write_prft) {
1451		✗	av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1452		✗	c->target_latency = 0;
1453			}
1454
1455		✗	if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1456		✗	av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higher than the Maximum. Both will be ignored\n");
1457		✗	c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1458			}
1459
1460		✗	av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1461		✗	ptr = strrchr(c->dirname, '/');
1462		✗	if (ptr) {
1463		✗	av_strlcpy(basename, &ptr[1], sizeof(basename));
1464		✗	ptr[1] = '\0';
1465			} else {
1466		✗	c->dirname[0] = '\0';
1467		✗	av_strlcpy(basename, s->url, sizeof(basename));
1468			}
1469
1470		✗	ptr = strrchr(basename, '.');
1471		✗	if (ptr)
1472		✗	*ptr = '\0';
1473
1474		✗	c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1475		✗	if (!c->streams)
1476		✗	return AVERROR(ENOMEM);
1477
1478		✗	if ((ret = parse_adaptation_sets(s)) < 0)
1479		✗	return ret;
1480
1481		✗	if ((ret = init_segment_types(s)) < 0)
1482		✗	return ret;
1483
1484		✗	for (i = 0; i < s->nb_streams; i++) {
1485		✗	OutputStream *os = &c->streams[i];
1486		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
1487			AVFormatContext *ctx;
1488			AVStream *st;
1489		✗	AVDictionary *opts = NULL;
1490			char filename[1024];
1491
1492		✗	os->bit_rate = s->streams[i]->codecpar->bit_rate;
1493		✗	if (!os->bit_rate) {
1494		✗	int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1495		✗	AV_LOG_ERROR : AV_LOG_WARNING;
1496		✗	av_log(s, level, "No bit rate set for stream %d\n", i);
1497		✗	if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1498		✗	return AVERROR(EINVAL);
1499			}
1500
1501			// copy AdaptationSet language and role from stream metadata
1502		✗	dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1503		✗	dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1504
1505		✗	if (c->init_seg_name) {
1506		✗	os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1507		✗	if (!os->init_seg_name)
1508		✗	return AVERROR(ENOMEM);
1509			}
1510		✗	if (c->media_seg_name) {
1511		✗	os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1512		✗	if (!os->media_seg_name)
1513		✗	return AVERROR(ENOMEM);
1514			}
1515		✗	if (c->single_file_name) {
1516		✗	os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1517		✗	if (!os->single_file_name)
1518		✗	return AVERROR(ENOMEM);
1519			}
1520
1521		✗	if (os->segment_type == SEGMENT_TYPE_WEBM) {
1522		✗	if ((!c->single_file && !av_match_ext(os->init_seg_name, os->format_name)) ||
1523		✗	(!c->single_file && !av_match_ext(os->media_seg_name, os->format_name)) ||
1524		✗	( c->single_file && !av_match_ext(os->single_file_name, os->format_name))) {
1525		✗	av_log(s, AV_LOG_WARNING,
1526			"One or many segment file names doesn't end with .webm. "
1527			"Override -init_seg_name and/or -media_seg_name and/or "
1528			"-single_file_name to end with the extension .webm\n");
1529			}
1530		✗	if (c->streaming) {
1531			// Streaming not supported as matroskaenc buffers internally before writing the output
1532		✗	av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1533		✗	c->streaming = 0;
1534			}
1535			}
1536
1537		✗	os->ctx = ctx = avformat_alloc_context();
1538		✗	if (!ctx)
1539		✗	return AVERROR(ENOMEM);
1540
1541		✗	ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1542		✗	if (!ctx->oformat)
1543		✗	return AVERROR_MUXER_NOT_FOUND;
1544		✗	ctx->interrupt_callback = s->interrupt_callback;
1545		✗	ctx->opaque = s->opaque;
1546		✗	ctx->io_close2 = s->io_close2;
1547		✗	ctx->io_open = s->io_open;
1548		✗	ctx->strict_std_compliance = s->strict_std_compliance;
1549
1550		✗	if (!(st = avformat_new_stream(ctx, NULL)))
1551		✗	return AVERROR(ENOMEM);
1552		✗	avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1553		✗	st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1554		✗	st->time_base = s->streams[i]->time_base;
1555		✗	st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1556		✗	ctx->avoid_negative_ts = s->avoid_negative_ts;
1557		✗	ctx->flags = s->flags;
1558
1559		✗	os->parser = av_parser_init(st->codecpar->codec_id);
1560		✗	if (os->parser) {
1561		✗	os->parser_avctx = avcodec_alloc_context3(NULL);
1562		✗	if (!os->parser_avctx)
1563		✗	return AVERROR(ENOMEM);
1564		✗	ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1565		✗	if (ret < 0)
1566		✗	return ret;
1567			// We only want to parse frame headers
1568		✗	os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1569			}
1570
1571		✗	if (c->single_file) {
1572		✗	if (os->single_file_name)
1573		✗	ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1574			else
1575		✗	snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1576			} else {
1577		✗	ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1578			}
1579		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1580		✗	set_http_options(&opts, c);
1581		✗	if (!c->single_file) {
1582		✗	if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1583		✗	return ret;
1584		✗	ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1585			} else {
1586		✗	ctx->url = av_strdup(filename);
1587		✗	ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1588			}
1589		✗	av_dict_free(&opts);
1590		✗	if (ret < 0)
1591		✗	return ret;
1592		✗	os->init_start_pos = 0;
1593
1594		✗	av_dict_copy(&opts, c->format_options, 0);
1595		✗	if (!as->seg_duration)
1596		✗	as->seg_duration = c->seg_duration;
1597		✗	if (!as->frag_duration)
1598		✗	as->frag_duration = c->frag_duration;
1599		✗	if (as->frag_type < 0)
1600		✗	as->frag_type = c->frag_type;
1601		✗	os->seg_duration = as->seg_duration;
1602		✗	os->frag_duration = as->frag_duration;
1603		✗	os->frag_type = as->frag_type;
1604
1605		✗	c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1606
1607		✗	if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1608		✗	av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1609		✗	return AVERROR(EINVAL);
1610			}
1611
1612		✗	if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1613		✗	av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1614		✗	os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1615			}
1616		✗	if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1617		✗	av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1618		✗	return AVERROR(EINVAL);
1619			}
1620		✗	if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1621		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1622		✗	av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1623		✗	os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1624			}
1625		✗	if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1626			// Set this now if a parser isn't used
1627		✗	os->coding_dependency = 1;
1628
1629		✗	if (os->segment_type == SEGMENT_TYPE_MP4) {
1630		✗	if (c->streaming)
1631			// skip_sidx : Reduce bitrate overhead
1632			// skip_trailer : Avoids growing memory usage with time
1633		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1634			else {
1635		✗	if (c->global_sidx)
1636		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1637			else
1638		✗	av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1639			}
1640		✗	if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1641		✗	av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1642			else
1643		✗	av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1644		✗	if (os->frag_type == FRAG_TYPE_DURATION)
1645		✗	av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1646		✗	if (c->write_prft)
1647		✗	av_dict_set(&opts, "write_prft", "wallclock", 0);
1648			} else {
1649		✗	av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1650		✗	av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1651		✗	av_dict_set_int(&opts, "dash", 1, 0);
1652		✗	av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1653		✗	av_dict_set_int(&opts, "live", 1, 0);
1654			}
1655		✗	ret = avformat_init_output(ctx, &opts);
1656		✗	av_dict_free(&opts);
1657		✗	if (ret < 0)
1658		✗	return ret;
1659		✗	os->ctx_inited = 1;
1660		✗	avio_flush(ctx->pb);
1661
1662		✗	av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1663
1664		✗	s->streams[i]->time_base = st->time_base;
1665			// If the muxer wants to shift timestamps, request to have them shifted
1666			// already before being handed to this muxer, so we don't have mismatches
1667			// between the MPD and the actual segments.
1668		✗	s->avoid_negative_ts = ctx->avoid_negative_ts;
1669		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1670		✗	AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1671			AVRational par;
1672		✗	if (avg_frame_rate.num > 0) {
1673		✗	if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1674		✗	as->min_frame_rate = avg_frame_rate;
1675		✗	if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1676		✗	as->max_frame_rate = avg_frame_rate;
1677			} else {
1678		✗	as->ambiguous_frame_rate = 1;
1679			}
1680
1681		✗	if (st->codecpar->width > as->max_width)
1682		✗	as->max_width = st->codecpar->width;
1683		✗	if (st->codecpar->height > as->max_height)
1684		✗	as->max_height = st->codecpar->height;
1685
1686		✗	if (st->sample_aspect_ratio.num)
1687		✗	os->sar = st->sample_aspect_ratio;
1688			else
1689		✗	os->sar = (AVRational){1,1};
1690		✗	av_reduce(&par.num, &par.den,
1691		✗	st->codecpar->width * (int64_t)os->sar.num,
1692		✗	st->codecpar->height * (int64_t)os->sar.den,
1693			1024 * 1024);
1694
1695		✗	if (as->par.num && av_cmp_q(par, as->par)) {
1696		✗	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);
1697		✗	return AVERROR(EINVAL);
1698			}
1699		✗	as->par = par;
1700
1701		✗	c->has_video = 1;
1702			}
1703
1704		✗	set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1705			sizeof(os->codec_str));
1706		✗	os->first_pts = AV_NOPTS_VALUE;
1707		✗	os->max_pts = AV_NOPTS_VALUE;
1708		✗	os->last_dts = AV_NOPTS_VALUE;
1709		✗	os->segment_index = 1;
1710
1711		✗	if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1712		✗	c->nr_of_streams_to_flush++;
1713			}
1714
1715		✗	if (!c->has_video && c->seg_duration <= 0) {
1716		✗	av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1717		✗	return AVERROR(EINVAL);
1718			}
1719		✗	if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1720		✗	av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1721
1722		✗	c->nr_of_streams_flushed = 0;
1723		✗	c->target_latency_refid = -1;
1724
1725		✗	return 0;
1726			}
1727
1728		✗	static int dash_write_header(AVFormatContext *s)
1729			{
1730		✗	DASHContext *c = s->priv_data;
1731			int i, ret;
1732		✗	for (i = 0; i < s->nb_streams; i++) {
1733		✗	OutputStream *os = &c->streams[i];
1734		✗	if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1735		✗	return ret;
1736
1737			// Flush init segment
1738			// Only for WebM segment, since for mp4 delay_moov is set and
1739			// the init segment is thus flushed after the first packets.
1740		✗	if (os->segment_type == SEGMENT_TYPE_WEBM &&
1741		✗	(ret = flush_init_segment(s, os)) < 0)
1742		✗	return ret;
1743			}
1744		✗	return 0;
1745			}
1746
1747		✗	static int add_segment(OutputStream *os, const char *file,
1748			int64_t time, int64_t duration,
1749			int64_t start_pos, int64_t range_length,
1750			int64_t index_length, int next_exp_index)
1751			{
1752			int err;
1753			Segment *seg;
1754		✗	if (os->nb_segments >= os->segments_size) {
1755		✗	os->segments_size = (os->segments_size + 1) * 2;
1756		✗	if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1757		✗	os->segments_size)) < 0) {
1758		✗	os->segments_size = 0;
1759		✗	os->nb_segments = 0;
1760		✗	return err;
1761			}
1762			}
1763		✗	seg = av_mallocz(sizeof(*seg));
1764		✗	if (!seg)
1765		✗	return AVERROR(ENOMEM);
1766		✗	av_strlcpy(seg->file, file, sizeof(seg->file));
1767		✗	seg->time = time;
1768		✗	seg->duration = duration;
1769		✗	if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1770		✗	seg->duration += seg->time;
1771		✗	seg->time = 0;
1772			}
1773		✗	seg->start_pos = start_pos;
1774		✗	seg->range_length = range_length;
1775		✗	seg->index_length = index_length;
1776		✗	os->segments[os->nb_segments++] = seg;
1777		✗	os->segment_index++;
1778			//correcting the segment index if it has fallen behind the expected value
1779		✗	if (os->segment_index < next_exp_index) {
1780		✗	av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1781			file, os->segment_index, next_exp_index);
1782		✗	os->segment_index = next_exp_index;
1783			}
1784		✗	return 0;
1785			}
1786
1787		✗	static void write_styp(AVIOContext *pb)
1788			{
1789		✗	avio_wb32(pb, 24);
1790		✗	ffio_wfourcc(pb, "styp");
1791		✗	ffio_wfourcc(pb, "msdh");
1792		✗	avio_wb32(pb, 0); /* minor */
1793		✗	ffio_wfourcc(pb, "msdh");
1794		✗	ffio_wfourcc(pb, "msix");
1795		✗	}
1796
1797		✗	static void find_index_range(AVFormatContext *s, const char *full_path,
1798			int64_t pos, int *index_length)
1799			{
1800			uint8_t buf[8];
1801			AVIOContext *pb;
1802			int ret;
1803
1804		✗	ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1805		✗	if (ret < 0)
1806		✗	return;
1807		✗	if (avio_seek(pb, pos, SEEK_SET) != pos) {
1808		✗	ff_format_io_close(s, &pb);
1809		✗	return;
1810			}
1811		✗	ret = avio_read(pb, buf, 8);
1812		✗	ff_format_io_close(s, &pb);
1813		✗	if (ret < 8)
1814		✗	return;
1815		✗	if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1816		✗	return;
1817		✗	*index_length = AV_RB32(&buf[0]);
1818			}
1819
1820		✗	static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1821			AVPacket *pkt, AVRational *frame_rate)
1822			{
1823		✗	AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1824			uint8_t *extradata;
1825			size_t extradata_size;
1826			int ret;
1827
1828		✗	if (par->extradata_size)
1829		✗	return 0;
1830
1831		✗	extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1832		✗	if (!extradata_size)
1833		✗	return 0;
1834
1835		✗	ret = ff_alloc_extradata(par, extradata_size);
1836		✗	if (ret < 0)
1837		✗	return ret;
1838
1839		✗	memcpy(par->extradata, extradata, extradata_size);
1840
1841		✗	set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1842
1843		✗	return 0;
1844			}
1845
1846		✗	static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1847		✗	DASHContext *c = s->priv_data;
1848		✗	int http_base_proto = ff_is_http_proto(filename);
1849
1850		✗	if (http_base_proto) {
1851		✗	AVDictionary *http_opts = NULL;
1852
1853		✗	set_http_options(&http_opts, c);
1854		✗	av_dict_set(&http_opts, "method", "DELETE", 0);
1855
1856		✗	if (dashenc_io_open(s, &c->http_delete, filename, &http_opts) < 0) {
1857		✗	av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1858			}
1859		✗	av_dict_free(&http_opts);
1860
1861			//Nothing to write
1862		✗	dashenc_io_close(s, &c->http_delete, filename);
1863			} else {
1864		✗	int res = ffurl_delete(filename);
1865		✗	if (res < 0) {
1866		✗	av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR),
1867		✗	"failed to delete %s: %s\n", filename, av_err2str(res));
1868			}
1869			}
1870		✗	}
1871
1872		✗	static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1873			{
1874		✗	DASHContext *c = s->priv_data;
1875			AVBPrint buf;
1876
1877		✗	av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1878
1879		✗	av_bprintf(&buf, "%s%s", c->dirname, file);
1880		✗	if (!av_bprint_is_complete(&buf)) {
1881		✗	av_bprint_finalize(&buf, NULL);
1882		✗	av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1883		✗	return AVERROR(ENOMEM);
1884			}
1885
1886		✗	dashenc_delete_file(s, buf.str);
1887
1888		✗	av_bprint_finalize(&buf, NULL);
1889		✗	return 0;
1890			}
1891
1892		✗	static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1893			{
1894		✗	for (int i = 0; i < remove_count; ++i) {
1895		✗	dashenc_delete_segment_file(s, os->segments[i]->file);
1896
1897			// Delete the segment regardless of whether the file was successfully deleted
1898		✗	av_free(os->segments[i]);
1899			}
1900
1901		✗	os->nb_segments -= remove_count;
1902		✗	memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1903		✗	}
1904
1905		✗	static int dash_flush(AVFormatContext *s, int final, int stream)
1906			{
1907		✗	DASHContext *c = s->priv_data;
1908		✗	int i, ret = 0;
1909
1910		✗	const char *proto = avio_find_protocol_name(s->url);
1911		✗	int use_rename = proto && !strcmp(proto, "file");
1912
1913		✗	int cur_flush_segment_index = 0, next_exp_index = -1;
1914		✗	if (stream >= 0) {
1915		✗	cur_flush_segment_index = c->streams[stream].segment_index;
1916
1917			//finding the next segment's expected index, based on the current pts value
1918		✗	if (c->use_template && !c->use_timeline && c->index_correction &&
1919		✗	c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1920		✗	c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1921		✗	int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1922		✗	c->streams[stream].first_pts,
1923		✗	s->streams[stream]->time_base,
1924		✗	AV_TIME_BASE_Q);
1925		✗	next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1926			}
1927			}
1928
1929		✗	for (i = 0; i < s->nb_streams; i++) {
1930		✗	OutputStream *os = &c->streams[i];
1931		✗	AVStream *st = s->streams[i];
1932		✗	int range_length, index_length = 0;
1933			int64_t duration;
1934
1935		✗	if (!os->packets_written)
1936		✗	continue;
1937
1938			// Flush the single stream that got a keyframe right now.
1939			// Flush all audio streams as well, in sync with video keyframes,
1940			// but not the other video streams.
1941		✗	if (stream >= 0 && i != stream) {
1942		✗	if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1943		✗	s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1944		✗	continue;
1945		✗	if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1946		✗	continue;
1947			// Make sure we don't flush audio streams multiple times, when
1948			// all video streams are flushed one at a time.
1949		✗	if (c->has_video && os->segment_index > cur_flush_segment_index)
1950		✗	continue;
1951			}
1952
1953		✗	if (c->single_file)
1954		✗	snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1955
1956		✗	ret = flush_dynbuf(c, os, &range_length);
1957		✗	if (ret < 0)
1958		✗	break;
1959		✗	os->packets_written = 0;
1960
1961		✗	if (c->single_file) {
1962		✗	find_index_range(s, os->full_path, os->pos, &index_length);
1963			} else {
1964		✗	dashenc_io_close(s, &os->out, os->temp_path);
1965
1966		✗	if (use_rename) {
1967		✗	ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1968		✗	if (ret < 0)
1969		✗	break;
1970			}
1971			}
1972
1973		✗	duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1974		✗	os->last_duration = FFMAX(os->last_duration, duration);
1975
1976		✗	if (!os->muxer_overhead && os->max_pts > os->start_pts)
1977		✗	os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1978		✗	8 * AV_TIME_BASE) / duration;
1979		✗	os->total_pkt_size = 0;
1980		✗	os->total_pkt_duration = 0;
1981
1982		✗	if (!os->bit_rate && !os->first_segment_bit_rate) {
1983		✗	os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1984			}
1985		✗	add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1986		✗	av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1987
1988		✗	os->pos += range_length;
1989			}
1990
1991		✗	if (c->window_size) {
1992		✗	for (i = 0; i < s->nb_streams; i++) {
1993		✗	OutputStream *os = &c->streams[i];
1994		✗	int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1995		✗	if (remove_count > 0)
1996		✗	dashenc_delete_media_segments(s, os, remove_count);
1997			}
1998			}
1999
2000		✗	if (final) {
2001		✗	for (i = 0; i < s->nb_streams; i++) {
2002		✗	OutputStream *os = &c->streams[i];
2003		✗	if (os->ctx && os->ctx_inited) {
2004		✗	int64_t file_size = avio_tell(os->ctx->pb);
2005		✗	av_write_trailer(os->ctx);
2006		✗	if (c->global_sidx) {
2007			int j, start_index, start_number;
2008		✗	int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
2009		✗	get_start_index_number(os, c, &start_index, &start_number);
2010		✗	if (start_index >= os->nb_segments ||
2011		✗	os->segment_type != SEGMENT_TYPE_MP4)
2012		✗	continue;
2013		✗	os->init_range_length += sidx_size;
2014		✗	for (j = start_index; j < os->nb_segments; j++) {
2015		✗	Segment *seg = os->segments[j];
2016		✗	seg->start_pos += sidx_size;
2017			}
2018			}
2019
2020			}
2021			}
2022			}
2023		✗	if (ret >= 0) {
2024		✗	if (c->has_video && !final) {
2025		✗	c->nr_of_streams_flushed++;
2026		✗	if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
2027		✗	return ret;
2028
2029		✗	c->nr_of_streams_flushed = 0;
2030			}
2031			// In streaming mode the manifest is written at the beginning
2032			// of the segment instead
2033		✗	if (!c->streaming || final)
2034		✗	ret = write_manifest(s, final);
2035			}
2036		✗	return ret;
2037			}
2038
2039		✗	static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
2040			{
2041		✗	OutputStream *os = &c->streams[pkt->stream_index];
2042			AVProducerReferenceTime *prft;
2043			size_t side_data_size;
2044
2045		✗	prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
2046		✗	if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2047			// No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2048			// of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2049		✗	prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
2050			sizeof(AVProducerReferenceTime));
2051		✗	if (!prft)
2052		✗	return AVERROR(ENOMEM);
2053		✗	prft->wallclock = av_gettime();
2054		✗	prft->flags = 24;
2055			}
2056		✗	if (os->first_pts == AV_NOPTS_VALUE) {
2057		✗	os->producer_reference_time = *prft;
2058		✗	if (c->target_latency_refid < 0)
2059		✗	c->target_latency_refid = pkt->stream_index;
2060			}
2061
2062		✗	return 0;
2063			}
2064
2065		✗	static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2066			{
2067		✗	DASHContext *c = s->priv_data;
2068		✗	AVStream *st = s->streams[pkt->stream_index];
2069		✗	OutputStream *os = &c->streams[pkt->stream_index];
2070		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
2071			int64_t seg_end_duration, elapsed_duration;
2072			int ret;
2073
2074		✗	ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2075		✗	if (ret < 0)
2076		✗	return ret;
2077
2078			// Fill in a heuristic guess of the packet duration, if none is available.
2079			// The mp4 muxer will do something similar (for the last packet in a fragment)
2080			// if nothing is set (setting it for the other packets doesn't hurt).
2081			// By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2082			// invoke its heuristic (this doesn't have to be identical to that algorithm),
2083			// so that we know the exact timestamps of fragments.
2084		✗	if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2085		✗	pkt->duration = pkt->dts - os->last_dts;
2086		✗	os->last_dts = pkt->dts;
2087
2088			// If forcing the stream to start at 0, the mp4 muxer will set the start
2089			// timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2090		✗	if (os->first_pts == AV_NOPTS_VALUE &&
2091		✗	s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2092		✗	pkt->pts -= pkt->dts;
2093		✗	pkt->dts = 0;
2094			}
2095
2096		✗	if (c->write_prft) {
2097		✗	ret = dash_parse_prft(c, pkt);
2098		✗	if (ret < 0)
2099		✗	return ret;
2100			}
2101
2102		✗	if (os->first_pts == AV_NOPTS_VALUE) {
2103		✗	os->first_pts = pkt->pts;
2104			}
2105		✗	os->last_pts = pkt->pts;
2106
2107		✗	if (!c->availability_start_time[0]) {
2108		✗	int64_t start_time_us = av_gettime();
2109		✗	c->start_time_s = start_time_us / 1000000;
2110		✗	format_date(c->availability_start_time,
2111			sizeof(c->availability_start_time), start_time_us);
2112			}
2113
2114		✗	if (!os->packets_written)
2115		✗	os->availability_time_offset = 0;
2116
2117		✗	if (!os->availability_time_offset &&
2118		✗	((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2119		✗	(os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2120		✗	AdaptationSet *as = &c->as[os->as_idx - 1];
2121		✗	int64_t frame_duration = 0;
2122
2123		✗	switch (os->frag_type) {
2124		✗	case FRAG_TYPE_DURATION:
2125		✗	frame_duration = os->frag_duration;
2126		✗	break;
2127		✗	case FRAG_TYPE_EVERY_FRAME:
2128		✗	frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2129		✗	break;
2130			}
2131
2132		✗	os->availability_time_offset = ((double) os->seg_duration -
2133		✗	frame_duration) / AV_TIME_BASE;
2134		✗	as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2135			}
2136
2137		✗	if (c->use_template && !c->use_timeline) {
2138		✗	elapsed_duration = pkt->pts - os->first_pts;
2139		✗	seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2140			} else {
2141		✗	elapsed_duration = pkt->pts - os->start_pts;
2142		✗	seg_end_duration = os->seg_duration;
2143			}
2144
2145		✗	if (os->parser &&
2146		✗	(os->frag_type == FRAG_TYPE_PFRAMES ||
2147		✗	as->trick_idx >= 0)) {
2148			// Parse the packets only in scenarios where it's needed
2149			uint8_t *data;
2150			int size;
2151		✗	av_parser_parse2(os->parser, os->parser_avctx,
2152		✗	&data, &size, pkt->data, pkt->size,
2153			pkt->pts, pkt->dts, pkt->pos);
2154
2155		✗	os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2156			}
2157
2158		✗	if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2159		✗	av_compare_ts(elapsed_duration, st->time_base,
2160		✗	seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2161		✗	if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2162		✗	c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2163			st->time_base,
2164		✗	AV_TIME_BASE_Q);
2165		✗	c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2166			st->time_base,
2167		✗	AV_TIME_BASE_Q);
2168
2169		✗	if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2170		✗	if (c->last_duration < os->last_duration*9/10 ||
2171		✗	c->last_duration > os->last_duration*11/10) {
2172		✗	av_log(s, AV_LOG_WARNING,
2173			"Segment durations differ too much, enable use_timeline "
2174			"and use_template, or keep a stricter keyframe interval\n");
2175			}
2176			}
2177			}
2178
2179		✗	if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2180		✗	format_date(os->producer_reference_time_str,
2181			sizeof(os->producer_reference_time_str),
2182			os->producer_reference_time.wallclock);
2183
2184		✗	if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2185		✗	return ret;
2186			}
2187
2188		✗	if (!os->packets_written) {
2189			// If we wrote a previous segment, adjust the start time of the segment
2190			// to the end of the previous one (which is the same as the mp4 muxer
2191			// does). This avoids gaps in the timeline.
2192		✗	if (os->max_pts != AV_NOPTS_VALUE)
2193		✗	os->start_pts = os->max_pts;
2194			else
2195		✗	os->start_pts = pkt->pts;
2196			}
2197		✗	if (os->max_pts == AV_NOPTS_VALUE)
2198		✗	os->max_pts = pkt->pts + pkt->duration;
2199			else
2200		✗	os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2201
2202		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2203		✗	os->frag_type == FRAG_TYPE_PFRAMES &&
2204		✗	os->packets_written) {
2205		✗	av_assert0(os->parser);
2206		✗	if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2207		✗	st->codecpar->video_delay &&
2208		✗	!(os->last_flags & AV_PKT_FLAG_KEY)) ||
2209		✗	pkt->flags & AV_PKT_FLAG_KEY) {
2210		✗	ret = av_write_frame(os->ctx, NULL);
2211		✗	if (ret < 0)
2212		✗	return ret;
2213
2214		✗	if (!os->availability_time_offset) {
2215		✗	int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2216		✗	AV_TIME_BASE_Q);
2217		✗	os->availability_time_offset = ((double) os->seg_duration -
2218		✗	frag_duration) / AV_TIME_BASE;
2219		✗	as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2220			}
2221			}
2222			}
2223
2224		✗	if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2225		✗	os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2226		✗	c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2227			}
2228
2229		✗	if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2230		✗	return ret;
2231
2232		✗	os->packets_written++;
2233		✗	os->total_pkt_size += pkt->size;
2234		✗	os->total_pkt_duration += pkt->duration;
2235		✗	os->last_flags = pkt->flags;
2236
2237		✗	if (!os->init_range_length)
2238		✗	flush_init_segment(s, os);
2239
2240			//open the output context when the first frame of a segment is ready
2241		✗	if (!c->single_file && os->packets_written == 1) {
2242		✗	AVDictionary *opts = NULL;
2243		✗	const char *proto = avio_find_protocol_name(s->url);
2244		✗	int use_rename = proto && !strcmp(proto, "file");
2245		✗	if (os->segment_type == SEGMENT_TYPE_MP4)
2246		✗	write_styp(os->ctx->pb);
2247		✗	os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2248		✗	ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2249			os->media_seg_name, pkt->stream_index,
2250			os->segment_index, os->bit_rate, os->start_pts);
2251		✗	snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2252		✗	os->filename);
2253		✗	snprintf(os->temp_path, sizeof(os->temp_path),
2254		✗	use_rename ? "%s.tmp" : "%s", os->full_path);
2255		✗	set_http_options(&opts, c);
2256		✗	ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2257		✗	av_dict_free(&opts);
2258		✗	if (ret < 0) {
2259		✗	return handle_io_open_error(s, ret, os->temp_path);
2260			}
2261
2262			// in streaming mode, the segments are available for playing
2263			// before fully written but the manifest is needed so that
2264			// clients and discover the segment filenames.
2265		✗	if (c->streaming) {
2266		✗	write_manifest(s, 0);
2267			}
2268
2269		✗	if (c->lhls) {
2270		✗	char *prefetch_url = use_rename ? NULL : os->filename;
2271		✗	write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2272			}
2273			}
2274
2275			//write out the data immediately in streaming mode
2276		✗	if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2277		✗	int len = 0;
2278		✗	uint8_t *buf = NULL;
2279		✗	avio_flush(os->ctx->pb);
2280		✗	len = avio_get_dyn_buf (os->ctx->pb, &buf);
2281		✗	if (os->out) {
2282		✗	avio_write(os->out, buf + os->written_len, len - os->written_len);
2283		✗	avio_flush(os->out);
2284			}
2285		✗	os->written_len = len;
2286			}
2287
2288		✗	return ret;
2289			}
2290
2291		✗	static int dash_write_trailer(AVFormatContext *s)
2292			{
2293		✗	DASHContext *c = s->priv_data;
2294			int i;
2295
2296		✗	if (s->nb_streams > 0) {
2297		✗	OutputStream *os = &c->streams[0];
2298			// If no segments have been written so far, try to do a crude
2299			// guess of the segment duration
2300		✗	if (!c->last_duration)
2301		✗	c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2302		✗	s->streams[0]->time_base,
2303		✗	AV_TIME_BASE_Q);
2304		✗	c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2305		✗	s->streams[0]->time_base,
2306		✗	AV_TIME_BASE_Q);
2307			}
2308		✗	dash_flush(s, 1, -1);
2309
2310		✗	if (c->remove_at_exit) {
2311		✗	for (i = 0; i < s->nb_streams; ++i) {
2312		✗	OutputStream *os = &c->streams[i];
2313		✗	dashenc_delete_media_segments(s, os, os->nb_segments);
2314		✗	dashenc_delete_segment_file(s, os->initfile);
2315		✗	if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2316			char filename[1024];
2317		✗	get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2318		✗	dashenc_delete_file(s, filename);
2319			}
2320			}
2321		✗	dashenc_delete_file(s, s->url);
2322
2323		✗	if (c->hls_playlist && c->master_playlist_created) {
2324			char filename[1024];
2325		✗	snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2326		✗	dashenc_delete_file(s, filename);
2327			}
2328			}
2329
2330		✗	return 0;
2331			}
2332
2333		✗	static int dash_check_bitstream(AVFormatContext *s, AVStream *st,
2334			const AVPacket *avpkt)
2335			{
2336		✗	DASHContext *c = s->priv_data;
2337		✗	OutputStream *os = &c->streams[st->index];
2338		✗	AVFormatContext *oc = os->ctx;
2339		✗	if (ffofmt(oc->oformat)->check_bitstream) {
2340		✗	AVStream *const ost = oc->streams[0];
2341			int ret;
2342		✗	ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, avpkt);
2343		✗	if (ret == 1) {
2344		✗	FFStream *const sti = ffstream(st);
2345		✗	FFStream *const osti = ffstream(ost);
2346		✗	sti->bsfc = osti->bsfc;
2347		✗	osti->bsfc = NULL;
2348			}
2349		✗	return ret;
2350			}
2351		✗	return 1;
2352			}
2353
2354			#define OFFSET(x) offsetof(DASHContext, x)
2355			#define E AV_OPT_FLAG_ENCODING_PARAM
2356			static const AVOption options[] = {
2357			{ "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 },
2358			{ "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"},
2359			{ "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, .unit = "segment_type"},
2360			{ "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, .unit = "segment_type"},
2361			{ "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, .unit = "segment_type"},
2362			{ "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 },
2363			{ "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},
2364			{ "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2365			{ "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"},
2366			{ "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, .unit = "frag_type"},
2367			{ "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, .unit = "frag_type"},
2368			{ "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, .unit = "frag_type"},
2369			{ "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"},
2370			{ "global_sidx", "Write global SIDX atom. Applicable only for single file, mp4 output, non-streaming mode", OFFSET(global_sidx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2371			{ "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2372			{ "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2373			{ "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2374			{ "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2375			{ "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2376			{ "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 },
2377			{ "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2378			{ "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 },
2379			{ "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2380			{ "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 },
2381			{ "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},
2382			{ "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2383			{ "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 },
2384			{ "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2385			{ "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2386			{ "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"},
2387			{ "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"},
2388			{ "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, .unit = "mpd_profile"},
2389			{ "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2390			{ "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2391			{ "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2392			{ "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 },
2393			{ "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2394			{ "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2395			{ "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2396			{ "update_period", "Set the mpd update interval", OFFSET(update_period), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2397			{ "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2398			{ "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2399			{ "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 },
2400			{ "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2401			{ "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2402			{ NULL },
2403			};
2404
2405			static const AVClass dash_class = {
2406			.class_name = "dash muxer",
2407			.item_name = av_default_item_name,
2408			.option = options,
2409			.version = LIBAVUTIL_VERSION_INT,
2410			};
2411
2412			const FFOutputFormat ff_dash_muxer = {
2413			.p.name = "dash",
2414			.p.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2415			.p.extensions = "mpd",
2416			.p.audio_codec = AV_CODEC_ID_AAC,
2417			.p.video_codec = AV_CODEC_ID_H264,
2418			.p.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2419			.p.priv_class = &dash_class,
2420			.priv_data_size = sizeof(DASHContext),
2421			.init = dash_init,
2422			.write_header = dash_write_header,
2423			.write_packet = dash_write_packet,
2424			.write_trailer = dash_write_trailer,
2425			.deinit = dash_free,
2426			.check_bitstream = dash_check_bitstream,
2427			};
2428