2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
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.
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.
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
33 #include <openssl/rand.h>
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time_internal.h"
47 #include "avio_internal.h"
48 #if CONFIG_HTTP_PROTOCOL
51 #include "hlsplaylist.h"
53 #include "os_support.h"
56 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
57 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
58 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
59 } StartSequenceSourceType;
62 #define LINE_BUFFER_SIZE 1024
63 #define HLS_MICROSECOND_UNIT 1000000
64 #define POSTFIX_PATTERN "_%d"
66 typedef struct HLSSegment {
68 char sub_filename[1024];
69 double duration; /* in seconds */
74 char key_uri[LINE_BUFFER_SIZE + 1];
75 char iv_string[KEYSIZE*2 + 1];
77 struct HLSSegment *next;
80 typedef enum HLSFlags {
81 // Generate a single media file and use byte ranges in the playlist.
82 HLS_SINGLE_FILE = (1 << 0),
83 HLS_DELETE_SEGMENTS = (1 << 1),
84 HLS_ROUND_DURATIONS = (1 << 2),
85 HLS_DISCONT_START = (1 << 3),
86 HLS_OMIT_ENDLIST = (1 << 4),
87 HLS_SPLIT_BY_TIME = (1 << 5),
88 HLS_APPEND_LIST = (1 << 6),
89 HLS_PROGRAM_DATE_TIME = (1 << 7),
90 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
91 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
92 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
93 HLS_TEMP_FILE = (1 << 11),
94 HLS_PERIODIC_REKEY = (1 << 12),
95 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
103 typedef struct VariantStream {
106 AVOutputFormat *oformat;
107 AVOutputFormat *vtt_oformat;
110 int init_range_length;
112 AVFormatContext *avf;
113 AVFormatContext *vtt_avf;
118 double dpp; // duration per packet
121 double duration; // last segment duration computed so far, in seconds
122 int64_t start_pos; // last segment starting position
123 int64_t size; // last segment size
125 int discontinuity_set;
128 HLSSegment *segments;
129 HLSSegment *last_segment;
130 HLSSegment *old_segments;
137 double initial_prog_date_time;
138 char current_segment_final_filename_fmt[1024]; // when renaming segments
140 char *fmp4_init_filename;
141 char *base_output_dirname;
145 unsigned int nb_streams;
146 int m3u8_created; /* status of media play-list creation */
150 typedef struct HLSContext {
151 const AVClass *class; // Class for private options.
152 int64_t start_sequence;
153 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
155 float time; // Set by a private option.
156 float init_time; // Set by a private option.
157 int max_nb_segments; // Set by a private option.
159 int wrap; // Set by a private option.
161 uint32_t flags; // enum HLSFlags
162 uint32_t pl_type; // enum PlaylistType
163 char *segment_filename;
164 char *fmp4_init_filename;
167 int use_localtime; ///< flag to expand filename with localtime
168 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
170 int64_t recording_time;
171 int64_t max_seg_size; // every segment file max size
174 char *format_options_str;
175 char *vtt_format_options_str;
176 char *subtitle_filename;
177 AVDictionary *format_options;
187 char key_file[LINE_BUFFER_SIZE + 1];
188 char key_uri[LINE_BUFFER_SIZE + 1];
189 char key_string[KEYSIZE*2 + 1];
190 char iv_string[KEYSIZE*2 + 1];
191 AVDictionary *vtt_format_options;
196 VariantStream *var_streams;
197 unsigned int nb_varstreams;
199 int master_m3u8_created; /* status of master play-list creation */
200 char *master_m3u8_url; /* URL of the master m3u8 file */
201 int version; /* HLS version */
202 char *var_stream_map; /* user specified variant stream map string */
203 char *master_pl_name;
204 unsigned int master_publish_rate;
208 static int mkdir_p(const char *path) {
210 char *temp = av_strdup(path);
214 if (!path || !temp) {
218 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
220 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
224 for ( ; *pos != '\0'; ++pos) {
225 if (*pos == '/' || *pos == '\\') {
228 ret = mkdir(temp, 0755);
233 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
234 ret = mkdir(temp, 0755);
241 static int is_http_proto(char *filename) {
242 const char *proto = avio_find_protocol_name(filename);
243 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
246 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
247 AVDictionary **options) {
248 HLSContext *hls = s->priv_data;
249 int http_base_proto = is_http_proto(filename);
250 int err = AVERROR_MUXER_NOT_FOUND;
251 if (!*pb || !http_base_proto || !hls->http_persistent) {
252 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
253 #if CONFIG_HTTP_PROTOCOL
255 URLContext *http_url_context = ffio_geturlcontext(*pb);
256 av_assert0(http_url_context);
257 err = ff_http_do_new_request(http_url_context, filename);
263 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
264 HLSContext *hls = s->priv_data;
265 int http_base_proto = is_http_proto(filename);
267 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
268 ff_format_io_close(s, pb);
272 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
274 int http_base_proto = is_http_proto(s->filename);
277 av_dict_set(options, "method", c->method, 0);
278 } else if (http_base_proto) {
279 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
280 av_dict_set(options, "method", "PUT", 0);
283 av_dict_set(options, "user_agent", c->user_agent, 0);
284 if (c->http_persistent)
285 av_dict_set_int(options, "multiple_requests", 1, 0);
289 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
292 char *q, buf1[20], c;
293 int nd, len, addchar_count;
302 if (c == '%' && *(p+1) == '%') // %%
304 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
307 while (av_isdigit(*(p + addchar_count))) {
308 nd = nd * 10 + *(p + addchar_count) - '0';
312 if (*(p + addchar_count) == placeholder) {
313 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
314 if (len < 1) // returned error or empty buf1
316 if ((q - buf + len) > buf_size - 1)
318 memcpy(q, buf1, len);
320 p += (addchar_count + 1);
328 while (addchar_count--)
329 if ((q - buf) < buf_size - 1)
341 static void write_styp(AVIOContext *pb)
344 ffio_wfourcc(pb, "styp");
345 ffio_wfourcc(pb, "msdh");
346 avio_wb32(pb, 0); /* minor */
347 ffio_wfourcc(pb, "msdh");
348 ffio_wfourcc(pb, "msix");
351 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
354 HLSSegment *segment, *previous_segment = NULL;
355 float playlist_duration = 0.0f;
356 int ret = 0, path_size, sub_path_size;
357 char *dirname = NULL, *p, *sub_path;
359 AVDictionary *options = NULL;
360 AVIOContext *out = NULL;
361 const char *proto = NULL;
363 segment = vs->segments;
365 playlist_duration += segment->duration;
366 segment = segment->next;
369 segment = vs->old_segments;
371 playlist_duration -= segment->duration;
372 previous_segment = segment;
373 segment = previous_segment->next;
374 if (playlist_duration <= -previous_segment->duration) {
375 previous_segment->next = NULL;
380 if (segment && !hls->use_localtime_mkdir) {
381 if (hls->segment_filename) {
382 dirname = av_strdup(hls->segment_filename);
384 dirname = av_strdup(vs->avf->filename);
387 ret = AVERROR(ENOMEM);
390 p = (char *)av_basename(dirname);
395 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
397 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
398 path = av_malloc(path_size);
400 ret = AVERROR(ENOMEM);
404 if (hls->use_localtime_mkdir)
405 av_strlcpy(path, segment->filename, path_size);
406 else { // segment->filename contains basename only
407 av_strlcpy(path, dirname, path_size);
408 av_strlcat(path, segment->filename, path_size);
411 proto = avio_find_protocol_name(s->filename);
412 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
413 av_dict_set(&options, "method", "DELETE", 0);
414 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
416 ff_format_io_close(vs->avf, &out);
417 } else if (unlink(path) < 0) {
418 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
419 path, strerror(errno));
422 if ((segment->sub_filename[0] != '\0')) {
423 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
424 sub_path = av_malloc(sub_path_size);
426 ret = AVERROR(ENOMEM);
430 av_strlcpy(sub_path, dirname, sub_path_size);
431 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
433 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
434 av_dict_set(&options, "method", "DELETE", 0);
435 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
439 ff_format_io_close(vs->avf, &out);
440 } else if (unlink(sub_path) < 0) {
441 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
442 sub_path, strerror(errno));
447 previous_segment = segment;
448 segment = previous_segment->next;
449 av_free(previous_segment);
459 static int randomize(uint8_t *buf, int len)
462 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
465 if (RAND_bytes(buf, len))
468 return AVERROR(ENOSYS);
470 return AVERROR(EINVAL);
473 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
475 HLSContext *hls = s->priv_data;
479 uint8_t key[KEYSIZE];
481 len = strlen(s->filename) + 4 + 1;
482 hls->key_basename = av_mallocz(len);
483 if (!hls->key_basename)
484 return AVERROR(ENOMEM);
486 av_strlcpy(hls->key_basename, s->filename, len);
487 av_strlcat(hls->key_basename, ".key", len);
490 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
491 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
493 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
494 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
497 if (!*hls->iv_string) {
498 uint8_t iv[16] = { 0 };
502 AV_WB64(iv + 8, vs->sequence);
504 memcpy(iv, hls->iv, sizeof(iv));
506 ff_data_to_hex(buf, iv, sizeof(iv), 0);
508 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
511 if (!*hls->key_uri) {
512 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
513 return AVERROR(EINVAL);
516 if (!*hls->key_file) {
517 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
518 return AVERROR(EINVAL);
521 if (!*hls->key_string) {
523 if ((ret = randomize(key, sizeof(key))) < 0) {
524 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
528 memcpy(key, hls->key, sizeof(key));
531 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
532 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
534 avio_seek(pb, 0, SEEK_CUR);
535 avio_write(pb, key, KEYSIZE);
542 static int hls_encryption_start(AVFormatContext *s)
544 HLSContext *hls = s->priv_data;
547 uint8_t key[KEYSIZE];
549 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
550 av_log(hls, AV_LOG_ERROR,
551 "error opening key info file %s\n", hls->key_info_file);
555 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
556 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
558 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
559 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
561 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
562 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
564 ff_format_io_close(s, &pb);
566 if (!*hls->key_uri) {
567 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
568 return AVERROR(EINVAL);
571 if (!*hls->key_file) {
572 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
573 return AVERROR(EINVAL);
576 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
577 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
581 ret = avio_read(pb, key, sizeof(key));
582 ff_format_io_close(s, &pb);
583 if (ret != sizeof(key)) {
584 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
585 if (ret >= 0 || ret == AVERROR_EOF)
586 ret = AVERROR(EINVAL);
589 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
594 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
596 int len = ff_get_line(s, buf, maxlen);
597 while (len > 0 && av_isspace(buf[len - 1]))
602 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
604 AVDictionary *options = NULL;
605 HLSContext *hls = s->priv_data;
607 AVFormatContext *vtt_oc = NULL;
608 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
611 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
616 oc->filename[0] = '\0';
617 oc->oformat = vs->oformat;
618 oc->interrupt_callback = s->interrupt_callback;
619 oc->max_delay = s->max_delay;
620 oc->opaque = s->opaque;
621 oc->io_open = s->io_open;
622 oc->io_close = s->io_close;
623 av_dict_copy(&oc->metadata, s->metadata, 0);
625 if(vs->vtt_oformat) {
626 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
629 vtt_oc = vs->vtt_avf;
630 vtt_oc->oformat = vs->vtt_oformat;
631 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
634 for (i = 0; i < vs->nb_streams; i++) {
636 AVFormatContext *loc;
637 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
642 if (!(st = avformat_new_stream(loc, NULL)))
643 return AVERROR(ENOMEM);
644 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
645 if (!oc->oformat->codec_tag ||
646 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
647 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
648 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
650 st->codecpar->codec_tag = 0;
653 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
654 st->time_base = vs->streams[i]->time_base;
655 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
658 vs->packets_written = 1;
661 vs->fmp4_init_mode = 0;
663 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
664 if (hls->max_seg_size > 0) {
665 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
666 return AVERROR_PATCHWELCOME;
669 vs->packets_written = 0;
670 vs->init_range_length = 0;
671 vs->fmp4_init_mode = !byterange_mode;
672 set_http_options(s, &options, hls);
673 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
676 if ((ret = s->io_open(s, &vs->out, vs->base_output_dirname, AVIO_FLAG_WRITE, &options)) < 0) {
677 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
681 if (hls->format_options_str) {
682 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
684 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
685 hls->format_options_str);
690 av_dict_copy(&options, hls->format_options, 0);
691 av_dict_set(&options, "fflags", "-autobsf", 0);
692 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
693 ret = avformat_init_output(oc, &options);
696 if (av_dict_count(options)) {
697 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
698 av_dict_free(&options);
699 return AVERROR(EINVAL);
702 av_dict_free(&options);
707 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
710 if (!av_strcasecmp(segment->filename,filename))
712 segment = segment->next;
714 return (HLSSegment *) NULL;
717 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
718 VariantStream *vs, HLSSegment *en,
719 double duration, int64_t pos, int64_t size)
721 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
722 strlen(vs->current_segment_final_filename_fmt)) {
723 av_strlcpy(vs->avf->filename, vs->current_segment_final_filename_fmt, sizeof(vs->avf->filename));
724 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
725 char * filename = av_strdup(vs->avf->filename); // %%s will be %s after strftime
728 return AVERROR(ENOMEM);
730 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
731 filename, 's', pos + size) < 1) {
732 av_log(hls, AV_LOG_ERROR,
733 "Invalid second level segment filename template '%s', "
734 "you can try to remove second_level_segment_size flag\n",
738 return AVERROR(EINVAL);
742 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
743 char * filename = av_strdup(vs->avf->filename); // %%t will be %t after strftime
746 return AVERROR(ENOMEM);
748 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
749 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
750 av_log(hls, AV_LOG_ERROR,
751 "Invalid second level segment filename template '%s', "
752 "you can try to remove second_level_segment_time flag\n",
756 return AVERROR(EINVAL);
764 static int sls_flag_check_duration_size_index(HLSContext *hls)
768 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
769 av_log(hls, AV_LOG_ERROR,
770 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
771 ret = AVERROR(EINVAL);
773 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
774 av_log(hls, AV_LOG_ERROR,
775 "second_level_segment_size hls_flag requires use_localtime to be true\n");
776 ret = AVERROR(EINVAL);
778 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
779 av_log(hls, AV_LOG_ERROR,
780 "second_level_segment_index hls_flag requires use_localtime to be true\n");
781 ret = AVERROR(EINVAL);
787 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
789 const char *proto = avio_find_protocol_name(vs->basename);
790 int segment_renaming_ok = proto && !strcmp(proto, "file");
793 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
794 av_log(hls, AV_LOG_ERROR,
795 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
796 ret = AVERROR(EINVAL);
798 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
799 av_log(hls, AV_LOG_ERROR,
800 "second_level_segment_size hls_flag works only with file protocol segment names\n");
801 ret = AVERROR(EINVAL);
807 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
808 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
809 strlen(vs->current_segment_final_filename_fmt)) {
810 ff_rename(old_filename, vs->avf->filename, hls);
814 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
816 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
817 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
819 return AVERROR(ENOMEM);
820 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
822 filename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
824 filename, 'd', vs->sequence) < 1) {
826 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
827 "you can try to remove second_level_segment_index flag\n",
830 return AVERROR(EINVAL);
834 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
835 av_strlcpy(vs->current_segment_final_filename_fmt, oc->filename,
836 sizeof(vs->current_segment_final_filename_fmt));
837 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
838 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
840 return AVERROR(ENOMEM);
841 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
842 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
843 "you can try to remove second_level_segment_size flag\n",
846 return AVERROR(EINVAL);
850 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
851 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
853 return AVERROR(ENOMEM);
854 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
855 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
856 "you can try to remove second_level_segment_time flag\n",
859 return AVERROR(EINVAL);
867 /* Create a new segment and append it to the segment list */
868 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
869 VariantStream *vs, double duration, int64_t pos,
872 HLSSegment *en = av_malloc(sizeof(*en));
873 const char *filename;
874 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
878 return AVERROR(ENOMEM);
880 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
885 filename = av_basename(vs->avf->filename);
887 if (hls->use_localtime_mkdir) {
888 filename = vs->avf->filename;
890 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
891 && !byterange_mode) {
892 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
894 av_strlcpy(en->filename, filename, sizeof(en->filename));
897 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->filename), sizeof(en->sub_filename));
899 en->sub_filename[0] = '\0';
901 en->duration = duration;
907 if (vs->discontinuity) {
909 vs->discontinuity = 0;
912 if (hls->key_info_file || hls->encrypt) {
913 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
914 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
920 vs->last_segment->next = en;
922 vs->last_segment = en;
924 // EVENT or VOD playlists imply sliding window cannot be used
925 if (hls->pl_type != PLAYLIST_TYPE_NONE)
926 hls->max_nb_segments = 0;
928 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
930 vs->initial_prog_date_time += en->duration;
931 vs->segments = en->next;
932 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
934 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
936 !(hls->flags & HLS_SINGLE_FILE)) {
938 en->next = vs->old_segments;
939 vs->old_segments = en;
940 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
947 if (hls->max_seg_size > 0) {
955 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
957 HLSContext *hls = s->priv_data;
959 int ret = 0, is_segment = 0;
960 int64_t new_start_pos;
965 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
966 &s->interrupt_callback, NULL,
967 s->protocol_whitelist, s->protocol_blacklist)) < 0)
970 read_chomp_line(in, line, sizeof(line));
971 if (strcmp(line, "#EXTM3U")) {
972 ret = AVERROR_INVALIDDATA;
976 vs->discontinuity = 0;
977 while (!avio_feof(in)) {
978 read_chomp_line(in, line, sizeof(line));
979 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
980 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
981 if (tmp_sequence < vs->sequence)
982 av_log(hls, AV_LOG_VERBOSE,
983 "Found playlist sequence number was smaller """
984 "than specified start sequence number: %"PRId64" < %"PRId64", "
985 "omitting\n", tmp_sequence, hls->start_sequence);
987 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
988 vs->sequence = tmp_sequence;
990 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
992 vs->discontinuity = 1;
993 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
995 vs->duration = atof(ptr);
996 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
997 ptr = av_stristr(line, "URI=\"");
999 ptr += strlen("URI=\"");
1000 end = av_stristr(ptr, ",");
1002 av_strlcpy(hls->key_uri, ptr, end - ptr);
1004 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1008 ptr = av_stristr(line, "IV=0x");
1010 ptr += strlen("IV=0x");
1011 end = av_stristr(ptr, ",");
1013 av_strlcpy(hls->iv_string, ptr, end - ptr);
1015 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1019 } else if (av_strstart(line, "#", NULL)) {
1021 } else if (line[0]) {
1024 new_start_pos = avio_tell(vs->avf->pb);
1025 vs->size = new_start_pos - vs->start_pos;
1026 av_strlcpy(vs->avf->filename, line, sizeof(line));
1027 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1030 vs->start_pos = new_start_pos;
1040 static void hls_free_segments(HLSSegment *p)
1051 static void hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1053 size_t len = strlen(oc->filename);
1054 char final_filename[sizeof(oc->filename)];
1056 av_strlcpy(final_filename, oc->filename, len);
1057 final_filename[len-4] = '\0';
1058 ff_rename(oc->filename, final_filename, s);
1059 oc->filename[len-4] = '\0';
1062 static int get_relative_url(const char *master_url, const char *media_url,
1063 char *rel_url, int rel_url_buf_size)
1067 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1068 strrchr(master_url, '\\');
1070 base_len = FFABS(p - master_url);
1071 if (av_strncasecmp(master_url, media_url, base_len)) {
1072 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1073 return AVERROR(EINVAL);
1076 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1080 static int create_master_playlist(AVFormatContext *s,
1081 VariantStream * const input_vs)
1083 HLSContext *hls = s->priv_data;
1085 AVStream *vid_st, *aud_st;
1086 AVIOContext *master_pb = 0;
1087 AVDictionary *options = NULL;
1089 int m3u8_name_size, ret, bandwidth;
1090 char *m3u8_rel_name;
1092 input_vs->m3u8_created = 1;
1093 if (!hls->master_m3u8_created) {
1094 /* For the first time, wait until all the media playlists are created */
1095 for (i = 0; i < hls->nb_varstreams; i++)
1096 if (!hls->var_streams[i].m3u8_created)
1099 /* Keep publishing the master playlist at the configured rate */
1100 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1101 input_vs->number % hls->master_publish_rate)
1105 set_http_options(s, &options, hls);
1107 ret = s->io_open(s, &master_pb, hls->master_m3u8_url, AVIO_FLAG_WRITE,\
1109 av_dict_free(&options);
1111 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1112 hls->master_m3u8_url);
1116 ff_hls_write_playlist_version(master_pb, hls->version);
1118 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1119 for (i = 0; i < hls->nb_varstreams; i++) {
1120 vs = &(hls->var_streams[i]);
1122 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1123 m3u8_rel_name = av_malloc(m3u8_name_size);
1124 if (!m3u8_rel_name) {
1125 ret = AVERROR(ENOMEM);
1128 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1129 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1130 m3u8_rel_name, m3u8_name_size);
1132 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1138 for (j = 0; j < vs->nb_streams; j++) {
1139 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1140 vid_st = vs->streams[j];
1141 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1142 aud_st = vs->streams[j];
1145 if (!vid_st && !aud_st) {
1146 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1152 bandwidth += vid_st->codecpar->bit_rate;
1154 bandwidth += aud_st->codecpar->bit_rate;
1155 bandwidth += bandwidth / 10;
1157 ff_hls_write_stream_info(vid_st, master_pb, bandwidth, m3u8_rel_name);
1159 av_freep(&m3u8_rel_name);
1163 hls->master_m3u8_created = 1;
1164 av_freep(&m3u8_rel_name);
1165 ff_format_io_close(s, &master_pb);
1169 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1171 HLSContext *hls = s->priv_data;
1173 int target_duration = 0;
1175 AVIOContext *out = NULL;
1176 AVIOContext *sub_out = NULL;
1177 char temp_filename[1024];
1178 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1179 const char *proto = avio_find_protocol_name(s->filename);
1180 int use_rename = proto && !strcmp(proto, "file");
1181 static unsigned warned_non_file;
1182 char *key_uri = NULL;
1183 char *iv_string = NULL;
1184 AVDictionary *options = NULL;
1185 double prog_date_time = vs->initial_prog_date_time;
1186 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1187 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1190 if (byterange_mode) {
1195 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1199 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1203 if (!use_rename && !warned_non_file++)
1204 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1206 set_http_options(s, &options, hls);
1207 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1208 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
1211 for (en = vs->segments; en; en = en->next) {
1212 if (target_duration <= en->duration)
1213 target_duration = hls_get_int_from_double(en->duration);
1216 vs->discontinuity_set = 0;
1217 ff_hls_write_playlist_header(out, hls->version, hls->allowcache,
1218 target_duration, sequence, hls->pl_type);
1220 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1221 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
1222 vs->discontinuity_set = 1;
1224 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1225 avio_printf(out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1227 for (en = vs->segments; en; en = en->next) {
1228 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1229 av_strcasecmp(en->iv_string, iv_string))) {
1230 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1232 avio_printf(out, ",IV=0x%s", en->iv_string);
1233 avio_printf(out, "\n");
1234 key_uri = en->key_uri;
1235 iv_string = en->iv_string;
1238 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1239 ff_hls_write_init_file(out, vs->fmp4_init_filename,
1240 hls->flags & HLS_SINGLE_FILE, en->size, en->pos);
1243 ret = ff_hls_write_file_entry(out, en->discont, byterange_mode,
1244 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1245 en->size, en->pos, vs->baseurl,
1246 en->filename, prog_date_time_p);
1248 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1252 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1253 ff_hls_write_end_list(out);
1255 if( vs->vtt_m3u8_name ) {
1256 if ((ret = s->io_open(s, &sub_out, vs->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
1258 ff_hls_write_playlist_header(sub_out, hls->version, hls->allowcache,
1259 target_duration, sequence, PLAYLIST_TYPE_NONE);
1260 for (en = vs->segments; en; en = en->next) {
1261 ret = ff_hls_write_file_entry(sub_out, 0, byterange_mode,
1262 en->duration, 0, en->size, en->pos,
1263 vs->baseurl, en->sub_filename, NULL);
1265 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1270 ff_hls_write_end_list(sub_out);
1275 av_dict_free(&options);
1276 ff_format_io_close(s, &out);
1277 ff_format_io_close(s, &sub_out);
1278 if (ret >= 0 && use_rename)
1279 ff_rename(temp_filename, vs->m3u8_name, s);
1281 if (ret >= 0 && hls->master_pl_name)
1282 if (create_master_playlist(s, vs) < 0)
1283 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1288 static int hls_start(AVFormatContext *s, VariantStream *vs)
1290 HLSContext *c = s->priv_data;
1291 AVFormatContext *oc = vs->avf;
1292 AVFormatContext *vtt_oc = vs->vtt_avf;
1293 AVDictionary *options = NULL;
1294 char *filename, iv_string[KEYSIZE*2 + 1];
1297 if (c->flags & HLS_SINGLE_FILE) {
1298 av_strlcpy(oc->filename, vs->basename,
1299 sizeof(oc->filename));
1300 if (vs->vtt_basename)
1301 av_strlcpy(vtt_oc->filename, vs->vtt_basename,
1302 sizeof(vtt_oc->filename));
1303 } else if (c->max_seg_size > 0) {
1304 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1306 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1308 vs->basename, 'd', vs->sequence) < 1) {
1310 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1311 return AVERROR(EINVAL);
1314 if (c->use_localtime) {
1316 struct tm *tm, tmpbuf;
1318 tm = localtime_r(&now0, &tmpbuf);
1319 if (!strftime(oc->filename, sizeof(oc->filename), vs->basename, tm)) {
1320 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1321 return AVERROR(EINVAL);
1324 err = sls_flag_use_localtime_filename(oc, c, vs);
1326 return AVERROR(ENOMEM);
1329 if (c->use_localtime_mkdir) {
1331 char *fn_copy = av_strdup(oc->filename);
1333 return AVERROR(ENOMEM);
1335 dir = av_dirname(fn_copy);
1336 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1337 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1339 return AVERROR(errno);
1343 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1345 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1347 vs->basename, 'd', vs->sequence) < 1) {
1349 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1350 return AVERROR(EINVAL);
1352 if( vs->vtt_basename) {
1353 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
1355 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1357 vs->vtt_basename, 'd', vs->sequence) < 1) {
1359 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1360 return AVERROR(EINVAL);
1366 set_http_options(s, &options, c);
1368 if (c->flags & HLS_TEMP_FILE) {
1369 av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
1372 if (c->key_info_file || c->encrypt) {
1373 if (c->key_info_file && c->encrypt) {
1374 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1375 " will use -hls_key_info_file priority\n");
1378 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1379 if (c->key_info_file) {
1380 if ((err = hls_encryption_start(s)) < 0)
1383 if ((err = do_encrypt(s, vs)) < 0)
1386 c->encrypt_started = 1;
1388 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1391 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1393 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1394 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1397 filename = av_asprintf("crypto:%s", oc->filename);
1399 err = AVERROR(ENOMEM);
1402 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1404 av_dict_free(&options);
1408 if ((err = hlsenc_io_open(s, &oc->pb, oc->filename, &options)) < 0)
1410 if (vs->vtt_basename) {
1411 set_http_options(s, &options, c);
1412 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->filename, &options)) < 0)
1415 av_dict_free(&options);
1417 if (c->segment_type == SEGMENT_TYPE_FMP4 && !(c->flags & HLS_SINGLE_FILE)) {
1420 /* We only require one PAT/PMT per segment. */
1421 if (oc->oformat->priv_class && oc->priv_data) {
1424 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1426 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1427 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1428 av_opt_set(oc->priv_data, "pat_period", period, 0);
1432 if (vs->vtt_basename) {
1433 err = avformat_write_header(vtt_oc,NULL);
1440 av_dict_free(&options);
1445 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1448 time_t t = time(NULL);
1449 struct tm *p, tmbuf;
1450 HLSContext *hls = s->priv_data;
1452 p = localtime_r(&t, &tmbuf);
1453 // no %s support when strftime returned error or left format string unchanged
1454 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1455 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1456 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1458 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1461 static int format_name(char *name, int name_buf_len, int i)
1464 char extension[10] = {'\0'};
1466 p = strrchr(name, '.');
1468 av_strlcpy(extension, p, sizeof(extension));
1472 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1474 if (strlen(extension))
1475 av_strlcat(name, extension, name_buf_len);
1480 static int get_nth_codec_stream_index(AVFormatContext *s,
1481 enum AVMediaType codec_type,
1484 unsigned int stream_index, cnt;
1485 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1488 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1489 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1491 if (cnt == stream_id)
1492 return stream_index;
1498 static int parse_variant_stream_mapstring(AVFormatContext *s)
1500 HLSContext *hls = s->priv_data;
1503 enum AVMediaType codec_type;
1504 int nb_varstreams, nb_streams;
1505 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1509 * Expected format for var_stream_map string is as below:
1511 * This string specifies how to group the audio, video and subtitle streams
1512 * into different variant streams. The variant stream groups are separated
1515 * a:, v:, s: are keys to specify audio, video and subtitle streams
1516 * respectively. Allowed values are 0 to 9 digits (limited just based on
1520 p = av_strdup(hls->var_stream_map);
1522 while(av_strtok(q, " \t", &saveptr1)) {
1524 hls->nb_varstreams++;
1528 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1529 if (!hls->var_streams)
1530 return AVERROR(ENOMEM);
1532 p = hls->var_stream_map;
1534 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1537 if (nb_varstreams < hls->nb_varstreams)
1538 vs = &(hls->var_streams[nb_varstreams++]);
1540 return AVERROR(EINVAL);
1543 while (q < varstr + strlen(varstr)) {
1544 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1545 !av_strncasecmp(q, "s:", 2))
1549 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1551 return AVERROR(ENOMEM);
1554 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1557 if (av_strstart(keyval, "v:", &val)) {
1558 codec_type = AVMEDIA_TYPE_VIDEO;
1559 } else if (av_strstart(keyval, "a:", &val)) {
1560 codec_type = AVMEDIA_TYPE_AUDIO;
1561 } else if (av_strstart(keyval, "s:", &val)) {
1562 codec_type = AVMEDIA_TYPE_SUBTITLE;
1564 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1565 return AVERROR(EINVAL);
1569 if (av_isdigit(*val))
1570 stream_index = get_nth_codec_stream_index (s, codec_type,
1573 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1574 vs->streams[nb_streams++] = s->streams[stream_index];
1576 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1577 return AVERROR(EINVAL);
1581 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1582 hls->nb_varstreams);
1587 static int update_variant_stream_info(AVFormatContext *s) {
1588 HLSContext *hls = s->priv_data;
1591 if (hls->var_stream_map) {
1592 return parse_variant_stream_mapstring(s);
1594 //By default, a single variant stream with all the codec streams is created
1595 hls->nb_varstreams = 1;
1596 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1597 hls->nb_varstreams);
1598 if (!hls->var_streams)
1599 return AVERROR(ENOMEM);
1601 hls->var_streams[0].nb_streams = s->nb_streams;
1602 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1603 hls->var_streams[0].nb_streams);
1604 if (!hls->var_streams[0].streams)
1605 return AVERROR(ENOMEM);
1607 for (i = 0; i < s->nb_streams; i++)
1608 hls->var_streams[0].streams[i] = s->streams[i];
1613 static int update_master_pl_info(AVFormatContext *s) {
1614 HLSContext *hls = s->priv_data;
1615 int m3u8_name_size, ret;
1618 m3u8_name_size = strlen(s->filename) + strlen(hls->master_pl_name) + 1;
1619 hls->master_m3u8_url = av_malloc(m3u8_name_size);
1620 if (!hls->master_m3u8_url) {
1621 ret = AVERROR(ENOMEM);
1625 av_strlcpy(hls->master_m3u8_url, s->filename, m3u8_name_size);
1626 p = strrchr(hls->master_m3u8_url, '/') ?
1627 strrchr(hls->master_m3u8_url, '/') :
1628 strrchr(hls->master_m3u8_url, '\\');
1631 av_strlcat(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1633 av_strlcpy(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1639 static int hls_write_header(AVFormatContext *s)
1641 HLSContext *hls = s->priv_data;
1643 AVDictionary *options = NULL;
1644 VariantStream *vs = NULL;
1646 for (i = 0; i < hls->nb_varstreams; i++) {
1647 vs = &hls->var_streams[i];
1649 av_dict_copy(&options, hls->format_options, 0);
1650 ret = avformat_write_header(vs->avf, &options);
1651 if (av_dict_count(options)) {
1652 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1653 ret = AVERROR(EINVAL);
1654 av_dict_free(&options);
1657 av_dict_free(&options);
1658 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1659 for (j = 0; j < vs->nb_streams; j++) {
1661 AVStream *outer_st = vs->streams[j];
1663 if (hls->max_seg_size > 0) {
1664 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1665 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1666 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1667 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1668 outer_st->codecpar->bit_rate, hls->max_seg_size);
1672 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1673 inner_st = vs->avf->streams[j];
1674 else if (vs->vtt_avf)
1675 inner_st = vs->vtt_avf->streams[0];
1677 /* We have a subtitle stream, when the user does not want one */
1681 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1689 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1691 HLSContext *hls = s->priv_data;
1692 AVFormatContext *oc = NULL;
1693 AVStream *st = s->streams[pkt->stream_index];
1694 int64_t end_pts = 0;
1696 int ret = 0, can_split = 1, i, j;
1697 int stream_index = 0;
1698 int range_length = 0;
1699 uint8_t *buffer = NULL;
1700 VariantStream *vs = NULL;
1702 for (i = 0; i < hls->nb_varstreams; i++) {
1703 vs = &hls->var_streams[i];
1704 for (j = 0; j < vs->nb_streams; j++) {
1705 if (vs->streams[j] == st) {
1706 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1722 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
1723 return AVERROR(ENOMEM);
1726 end_pts = hls->recording_time * vs->number;
1728 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
1729 /* reset end_pts, hls->recording_time at end of the init hls list */
1730 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
1731 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
1732 hls->recording_time = hls->time * AV_TIME_BASE;
1733 end_pts = init_list_dur + after_init_list_dur ;
1736 if (vs->start_pts == AV_NOPTS_VALUE) {
1737 vs->start_pts = pkt->pts;
1740 if (vs->has_video) {
1741 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1742 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1743 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1745 if (pkt->pts == AV_NOPTS_VALUE)
1746 is_ref_pkt = can_split = 0;
1749 if (vs->end_pts == AV_NOPTS_VALUE)
1750 vs->end_pts = pkt->pts;
1751 if (vs->new_start) {
1753 vs->duration = (double)(pkt->pts - vs->end_pts)
1754 * st->time_base.num / st->time_base.den;
1755 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1757 if (pkt->duration) {
1758 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1760 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
1761 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
1767 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
1768 end_pts, AV_TIME_BASE_Q) >= 0) {
1769 int64_t new_start_pos;
1770 char *old_filename = av_strdup(vs->avf->filename);
1771 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1773 if (!old_filename) {
1774 return AVERROR(ENOMEM);
1777 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
1779 new_start_pos = avio_tell(vs->avf->pb);
1780 vs->size = new_start_pos - vs->start_pos;
1782 if (!byterange_mode) {
1783 if (hls->segment_type == SEGMENT_TYPE_FMP4 && !vs->init_range_length) {
1785 range_length = avio_close_dyn_buf(oc->pb, &buffer);
1786 avio_write(vs->out, buffer, range_length);
1787 vs->init_range_length = range_length;
1788 avio_open_dyn_buf(&oc->pb);
1789 vs->packets_written = 0;
1790 ff_format_io_close(s, &vs->out);
1791 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
1793 hlsenc_io_close(s, &oc->pb, oc->filename);
1796 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->filename);
1799 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
1800 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
1801 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
1802 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1803 hls_rename_temp_file(s, oc);
1806 if (vs->fmp4_init_mode) {
1810 if (!vs->fmp4_init_mode || byterange_mode)
1811 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1812 vs->start_pos = new_start_pos;
1814 av_free(old_filename);
1818 vs->end_pts = pkt->pts;
1821 vs->fmp4_init_mode = 0;
1822 if (hls->flags & HLS_SINGLE_FILE) {
1824 } else if (hls->max_seg_size > 0) {
1825 if (vs->start_pos >= hls->max_seg_size) {
1827 sls_flag_file_rename(hls, vs, old_filename);
1828 ret = hls_start(s, vs);
1830 /* When split segment by byte, the duration is short than hls_time,
1831 * so it is not enough one segment duration as hls_time, */
1836 sls_flag_file_rename(hls, vs, old_filename);
1837 ret = hls_start(s, vs);
1839 av_free(old_filename);
1845 if (!vs->fmp4_init_mode || byterange_mode)
1846 if ((ret = hls_window(s, 0, vs)) < 0) {
1851 vs->packets_written++;
1852 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1857 static int hls_write_trailer(struct AVFormatContext *s)
1859 HLSContext *hls = s->priv_data;
1860 AVFormatContext *oc = NULL;
1861 AVFormatContext *vtt_oc = NULL;
1862 char *old_filename = NULL;
1864 VariantStream *vs = NULL;
1866 for (i = 0; i < hls->nb_varstreams; i++) {
1867 vs = &hls->var_streams[i];
1870 vtt_oc = vs->vtt_avf;
1871 old_filename = av_strdup(vs->avf->filename);
1873 if (!old_filename) {
1874 return AVERROR(ENOMEM);
1878 av_write_trailer(oc);
1880 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
1881 ff_format_io_close(s, &oc->pb);
1883 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
1884 hls_rename_temp_file(s, oc);
1887 /* after av_write_trailer, then duration + 1 duration per packet */
1888 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
1891 sls_flag_file_rename(hls, vs, old_filename);
1895 av_write_trailer(vtt_oc);
1896 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
1897 ff_format_io_close(s, &vtt_oc->pb);
1899 av_freep(&vs->basename);
1900 av_freep(&vs->base_output_dirname);
1901 avformat_free_context(oc);
1904 hls_window(s, 1, vs);
1906 av_freep(&vs->fmp4_init_filename);
1908 av_freep(&vs->vtt_basename);
1909 av_freep(&vs->vtt_m3u8_name);
1910 avformat_free_context(vtt_oc);
1913 hls_free_segments(vs->segments);
1914 hls_free_segments(vs->old_segments);
1915 av_free(old_filename);
1916 av_freep(&vs->m3u8_name);
1917 av_freep(&vs->streams);
1918 av_freep(&vs->baseurl);
1921 av_freep(&hls->key_basename);
1922 av_freep(&hls->var_streams);
1923 av_freep(&hls->master_m3u8_url);
1928 static int hls_init(AVFormatContext *s)
1933 HLSContext *hls = s->priv_data;
1934 const char *pattern = "%d.ts";
1935 VariantStream *vs = NULL;
1936 int basename_size = 0;
1937 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
1938 const char *vtt_pattern = "%d.vtt";
1940 int vtt_basename_size = 0, m3u8_name_size = 0;
1941 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
1943 ret = update_variant_stream_info(s);
1945 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
1949 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
1950 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
1951 ret = AVERROR(EINVAL);
1952 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
1956 if (hls->master_pl_name) {
1957 ret = update_master_pl_info(s);
1959 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
1965 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1968 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
1969 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
1970 time_t t = time(NULL); // we will need it in either case
1971 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
1972 hls->start_sequence = (int64_t)t;
1973 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1975 struct tm *p, tmbuf;
1976 if (!(p = localtime_r(&t, &tmbuf)))
1977 return AVERROR(ENOMEM);
1978 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1979 return AVERROR(ENOMEM);
1980 hls->start_sequence = strtoll(b, NULL, 10);
1982 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1985 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1986 for (i = 0; i < hls->nb_varstreams; i++) {
1987 vs = &hls->var_streams[i];
1988 vs->sequence = hls->start_sequence;
1989 vs->start_pts = AV_NOPTS_VALUE;
1990 vs->end_pts = AV_NOPTS_VALUE;
1991 vs->current_segment_final_filename_fmt[0] = '\0';
1993 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1994 // Independent segments cannot be guaranteed when splitting by time
1995 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
1996 av_log(s, AV_LOG_WARNING,
1997 "'split_by_time' and 'independent_segments' cannot be enabled together. "
1998 "Disabling 'independent_segments' flag\n");
2001 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2004 vs->initial_prog_date_time = now0;
2006 if (hls->format_options_str) {
2007 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2009 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2014 for (j = 0; j < vs->nb_streams; j++) {
2015 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2016 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2019 if (vs->has_video > 1)
2020 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2021 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2022 vs->oformat = av_guess_format("mp4", NULL, NULL);
2024 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2028 ret = AVERROR_MUXER_NOT_FOUND;
2032 if (vs->has_subtitle) {
2033 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2035 ret = AVERROR_MUXER_NOT_FOUND;
2039 if (hls->segment_filename) {
2040 basename_size = strlen(hls->segment_filename) + 1;
2041 if (hls->nb_varstreams > 1) {
2042 basename_size += strlen(POSTFIX_PATTERN);
2044 vs->basename = av_malloc(basename_size);
2045 if (!vs->basename) {
2046 ret = AVERROR(ENOMEM);
2050 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2052 if (hls->flags & HLS_SINGLE_FILE) {
2053 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2060 if (hls->use_localtime) {
2061 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
2063 basename_size = strlen(s->filename) + strlen(pattern) + 1;
2066 if (hls->nb_varstreams > 1) {
2067 basename_size += strlen(POSTFIX_PATTERN);
2070 vs->basename = av_malloc(basename_size);
2071 if (!vs->basename) {
2072 ret = AVERROR(ENOMEM);
2076 av_strlcpy(vs->basename, s->filename, basename_size);
2078 p = strrchr(vs->basename, '.');
2081 if (hls->use_localtime) {
2082 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2084 av_strlcat(vs->basename, pattern, basename_size);
2088 m3u8_name_size = strlen(s->filename) + 1;
2089 if (hls->nb_varstreams > 1) {
2090 m3u8_name_size += strlen(POSTFIX_PATTERN);
2093 vs->m3u8_name = av_malloc(m3u8_name_size);
2094 if (!vs->m3u8_name ) {
2095 ret = AVERROR(ENOMEM);
2099 av_strlcpy(vs->m3u8_name, s->filename, m3u8_name_size);
2101 if (hls->nb_varstreams > 1) {
2102 ret = format_name(vs->basename, basename_size, i);
2105 ret = format_name(vs->m3u8_name, m3u8_name_size, i);
2110 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2111 if (hls->nb_varstreams > 1)
2112 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2113 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2114 if (!vs->fmp4_init_filename ) {
2115 ret = AVERROR(ENOMEM);
2118 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2119 fmp4_init_filename_len);
2120 if (hls->nb_varstreams > 1) {
2121 ret = format_name(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2126 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2127 fmp4_init_filename_len = strlen(vs->fmp4_init_filename) + 1;
2128 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2129 if (!vs->base_output_dirname) {
2130 ret = AVERROR(ENOMEM);
2133 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2134 fmp4_init_filename_len);
2136 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2137 strlen(vs->fmp4_init_filename) + 1;
2139 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2140 if (!vs->base_output_dirname) {
2141 ret = AVERROR(ENOMEM);
2145 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2146 fmp4_init_filename_len);
2147 p = strrchr(vs->base_output_dirname, '/');
2150 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2151 fmp4_init_filename_len);
2153 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2154 fmp4_init_filename_len);
2159 if (!hls->use_localtime) {
2160 ret = sls_flag_check_duration_size_index(hls);
2165 ret = sls_flag_check_duration_size(hls, vs);
2170 if (vs->has_subtitle) {
2172 if (hls->flags & HLS_SINGLE_FILE)
2173 vtt_pattern = ".vtt";
2174 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
2175 if (hls->nb_varstreams > 1) {
2176 vtt_basename_size += strlen(POSTFIX_PATTERN);
2179 vs->vtt_basename = av_malloc(vtt_basename_size);
2180 if (!vs->vtt_basename) {
2181 ret = AVERROR(ENOMEM);
2184 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2185 if (!vs->vtt_m3u8_name ) {
2186 ret = AVERROR(ENOMEM);
2189 av_strlcpy(vs->vtt_basename, s->filename, vtt_basename_size);
2190 p = strrchr(vs->vtt_basename, '.');
2194 if ( hls->subtitle_filename ) {
2195 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2197 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2198 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2200 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2202 if (hls->nb_varstreams > 1) {
2203 ret= format_name(vs->vtt_basename, vtt_basename_size, i);
2206 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2213 vs->baseurl = av_strdup(hls->baseurl);
2215 ret = AVERROR(ENOMEM);
2220 if ((hls->flags & HLS_SINGLE_FILE) && (hls->segment_type == SEGMENT_TYPE_FMP4)) {
2221 vs->fmp4_init_filename = av_strdup(vs->basename);
2222 if (!vs->fmp4_init_filename) {
2223 ret = AVERROR(ENOMEM);
2227 if ((ret = hls_mux_init(s, vs)) < 0)
2230 if (hls->flags & HLS_APPEND_LIST) {
2231 parse_playlist(s, vs->m3u8_name, vs);
2232 vs->discontinuity = 1;
2233 if (hls->init_time > 0) {
2234 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2235 " hls_init_time value will have no effect\n");
2237 hls->recording_time = hls->time * AV_TIME_BASE;
2241 if (hls->segment_type != SEGMENT_TYPE_FMP4 || hls->flags & HLS_SINGLE_FILE) {
2242 if ((ret = hls_start(s, vs)) < 0)
2249 av_freep(&hls->key_basename);
2250 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2251 vs = &hls->var_streams[i];
2252 av_freep(&vs->basename);
2253 av_freep(&vs->vtt_basename);
2254 av_freep(&vs->fmp4_init_filename);
2255 av_freep(&vs->m3u8_name);
2256 av_freep(&vs->vtt_m3u8_name);
2257 av_freep(&vs->streams);
2258 av_freep(&vs->baseurl);
2260 avformat_free_context(vs->avf);
2262 avformat_free_context(vs->vtt_avf);
2264 av_freep(&hls->var_streams);
2265 av_freep(&hls->master_m3u8_url);
2271 #define OFFSET(x) offsetof(HLSContext, x)
2272 #define E AV_OPT_FLAG_ENCODING_PARAM
2273 static const AVOption options[] = {
2274 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2275 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2276 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2277 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2278 {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2279 {"hls_vtt_options","set hls vtt list of options for the container format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2281 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2283 {"hls_allow_cache", "explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments", OFFSET(allowcache), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, E},
2284 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2285 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2286 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2287 {"hls_key_info_file", "file with key URI and key file path", OFFSET(key_info_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2288 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2289 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2290 {"hls_enc_key_url", "url to access the key to decrypt the segments", OFFSET(key_url), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2291 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2292 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2293 {"hls_segment_type", "set hls segment files type", OFFSET(segment_type), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, SEGMENT_TYPE_FMP4, E, "segment_type"},
2294 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2295 {"fmp4", "make segment file to fragment mp4 files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_FMP4 }, 0, UINT_MAX, E, "segment_type"},
2296 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2297 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2298 {"single_file", "generate a single media file indexed with byte ranges", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SINGLE_FILE }, 0, UINT_MAX, E, "flags"},
2299 {"temp_file", "write segment to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"},
2300 {"delete_segments", "delete segment files that are no longer part of the playlist", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DELETE_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2301 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2302 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2303 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2304 {"split_by_time", "split the hls segment by time which user set by hls_time", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SPLIT_BY_TIME }, 0, UINT_MAX, E, "flags"},
2305 {"append_list", "append the new segments into old hls segment list", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_APPEND_LIST }, 0, UINT_MAX, E, "flags"},
2306 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2307 {"second_level_segment_index", "include segment index in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_INDEX }, 0, UINT_MAX, E, "flags"},
2308 {"second_level_segment_duration", "include segment duration in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_DURATION }, 0, UINT_MAX, E, "flags"},
2309 {"second_level_segment_size", "include segment size in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_SIZE }, 0, UINT_MAX, E, "flags"},
2310 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2311 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2312 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2313 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2314 {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type), AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E, "pl_type" },
2315 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2316 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2317 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2318 {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
2319 {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
2320 {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
2321 {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
2322 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2323 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2324 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2325 {"master_pl_publish_rate", "Publish master play list every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
2326 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2330 static const AVClass hls_class = {
2331 .class_name = "hls muxer",
2332 .item_name = av_default_item_name,
2334 .version = LIBAVUTIL_VERSION_INT,
2338 AVOutputFormat ff_hls_muxer = {
2340 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2341 .extensions = "m3u8",
2342 .priv_data_size = sizeof(HLSContext),
2343 .audio_codec = AV_CODEC_ID_AAC,
2344 .video_codec = AV_CODEC_ID_H264,
2345 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2346 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2348 .write_header = hls_write_header,
2349 .write_packet = hls_write_packet,
2350 .write_trailer = hls_write_trailer,
2351 .priv_class = &hls_class,