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"
49 #include "os_support.h"
52 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
53 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
54 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
55 } StartSequenceSourceType;
58 #define LINE_BUFFER_SIZE 1024
59 #define HLS_MICROSECOND_UNIT 1000000
60 #define POSTFIX_PATTERN "_%d"
62 typedef struct HLSSegment {
64 char sub_filename[1024];
65 double duration; /* in seconds */
70 char key_uri[LINE_BUFFER_SIZE + 1];
71 char iv_string[KEYSIZE*2 + 1];
73 struct HLSSegment *next;
76 typedef enum HLSFlags {
77 // Generate a single media file and use byte ranges in the playlist.
78 HLS_SINGLE_FILE = (1 << 0),
79 HLS_DELETE_SEGMENTS = (1 << 1),
80 HLS_ROUND_DURATIONS = (1 << 2),
81 HLS_DISCONT_START = (1 << 3),
82 HLS_OMIT_ENDLIST = (1 << 4),
83 HLS_SPLIT_BY_TIME = (1 << 5),
84 HLS_APPEND_LIST = (1 << 6),
85 HLS_PROGRAM_DATE_TIME = (1 << 7),
86 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
87 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
88 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
89 HLS_TEMP_FILE = (1 << 11),
90 HLS_PERIODIC_REKEY = (1 << 12),
91 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
106 typedef struct VariantStream {
109 AVOutputFormat *oformat;
110 AVOutputFormat *vtt_oformat;
113 int init_range_length;
115 AVFormatContext *avf;
116 AVFormatContext *vtt_avf;
121 double dpp; // duration per packet
124 double duration; // last segment duration computed so far, in seconds
125 int64_t start_pos; // last segment starting position
126 int64_t size; // last segment size
128 int discontinuity_set;
131 HLSSegment *segments;
132 HLSSegment *last_segment;
133 HLSSegment *old_segments;
140 double initial_prog_date_time;
141 char current_segment_final_filename_fmt[1024]; // when renaming segments
143 char *fmp4_init_filename;
144 char *base_output_dirname;
148 unsigned int nb_streams;
149 int m3u8_created; /* status of media play-list creation */
153 typedef struct HLSContext {
154 const AVClass *class; // Class for private options.
155 int64_t start_sequence;
156 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
158 float time; // Set by a private option.
159 float init_time; // Set by a private option.
160 int max_nb_segments; // Set by a private option.
162 int wrap; // Set by a private option.
164 uint32_t flags; // enum HLSFlags
165 uint32_t pl_type; // enum PlaylistType
166 char *segment_filename;
167 char *fmp4_init_filename;
170 int use_localtime; ///< flag to expand filename with localtime
171 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
173 int64_t recording_time;
174 int64_t max_seg_size; // every segment file max size
177 char *format_options_str;
178 char *vtt_format_options_str;
179 char *subtitle_filename;
180 AVDictionary *format_options;
190 char key_file[LINE_BUFFER_SIZE + 1];
191 char key_uri[LINE_BUFFER_SIZE + 1];
192 char key_string[KEYSIZE*2 + 1];
193 char iv_string[KEYSIZE*2 + 1];
194 AVDictionary *vtt_format_options;
199 VariantStream *var_streams;
200 unsigned int nb_varstreams;
202 int master_m3u8_created; /* status of master play-list creation */
203 char *master_m3u8_url; /* URL of the master m3u8 file */
204 int version; /* HLS version */
205 char *var_stream_map; /* user specified variant stream map string */
206 char *master_pl_name;
207 unsigned int master_publish_rate;
210 static int get_int_from_double(double val)
212 return (int)((val - (int)val) >= 0.001) ? (int)(val + 1) : (int)val;
215 static int mkdir_p(const char *path) {
217 char *temp = av_strdup(path);
221 if (!path || !temp) {
225 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
227 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
231 for ( ; *pos != '\0'; ++pos) {
232 if (*pos == '/' || *pos == '\\') {
235 ret = mkdir(temp, 0755);
240 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
241 ret = mkdir(temp, 0755);
248 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
250 const char *proto = avio_find_protocol_name(s->filename);
251 int http_base_proto = proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
254 av_dict_set(options, "method", c->method, 0);
255 } else if (http_base_proto) {
256 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
257 av_dict_set(options, "method", "PUT", 0);
260 av_dict_set(options, "user_agent", c->user_agent, 0);
264 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
267 char *q, buf1[20], c;
268 int nd, len, addchar_count;
277 if (c == '%' && *(p+1) == '%') // %%
279 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
282 while (av_isdigit(*(p + addchar_count))) {
283 nd = nd * 10 + *(p + addchar_count) - '0';
287 if (*(p + addchar_count) == placeholder) {
288 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
289 if (len < 1) // returned error or empty buf1
291 if ((q - buf + len) > buf_size - 1)
293 memcpy(q, buf1, len);
295 p += (addchar_count + 1);
303 while (addchar_count--)
304 if ((q - buf) < buf_size - 1)
316 static void write_styp(AVIOContext *pb)
319 ffio_wfourcc(pb, "styp");
320 ffio_wfourcc(pb, "msdh");
321 avio_wb32(pb, 0); /* minor */
322 ffio_wfourcc(pb, "msdh");
323 ffio_wfourcc(pb, "msix");
326 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
329 HLSSegment *segment, *previous_segment = NULL;
330 float playlist_duration = 0.0f;
331 int ret = 0, path_size, sub_path_size;
332 char *dirname = NULL, *p, *sub_path;
334 AVDictionary *options = NULL;
335 AVIOContext *out = NULL;
336 const char *proto = NULL;
338 segment = vs->segments;
340 playlist_duration += segment->duration;
341 segment = segment->next;
344 segment = vs->old_segments;
346 playlist_duration -= segment->duration;
347 previous_segment = segment;
348 segment = previous_segment->next;
349 if (playlist_duration <= -previous_segment->duration) {
350 previous_segment->next = NULL;
355 if (segment && !hls->use_localtime_mkdir) {
356 if (hls->segment_filename) {
357 dirname = av_strdup(hls->segment_filename);
359 dirname = av_strdup(vs->avf->filename);
362 ret = AVERROR(ENOMEM);
365 p = (char *)av_basename(dirname);
370 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
372 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
373 path = av_malloc(path_size);
375 ret = AVERROR(ENOMEM);
379 if (hls->use_localtime_mkdir)
380 av_strlcpy(path, segment->filename, path_size);
381 else { // segment->filename contains basename only
382 av_strlcpy(path, dirname, path_size);
383 av_strlcat(path, segment->filename, path_size);
386 proto = avio_find_protocol_name(s->filename);
387 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
388 av_dict_set(&options, "method", "DELETE", 0);
389 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
391 ff_format_io_close(vs->avf, &out);
392 } else if (unlink(path) < 0) {
393 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
394 path, strerror(errno));
397 if ((segment->sub_filename[0] != '\0')) {
398 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
399 sub_path = av_malloc(sub_path_size);
401 ret = AVERROR(ENOMEM);
405 av_strlcpy(sub_path, dirname, sub_path_size);
406 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
408 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
409 av_dict_set(&options, "method", "DELETE", 0);
410 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
414 ff_format_io_close(vs->avf, &out);
415 } else if (unlink(sub_path) < 0) {
416 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
417 sub_path, strerror(errno));
422 previous_segment = segment;
423 segment = previous_segment->next;
424 av_free(previous_segment);
434 static int randomize(uint8_t *buf, int len)
437 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
440 if (RAND_bytes(buf, len))
443 return AVERROR(ENOSYS);
445 return AVERROR(EINVAL);
448 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
450 HLSContext *hls = s->priv_data;
454 uint8_t key[KEYSIZE];
456 len = strlen(s->filename) + 4 + 1;
457 hls->key_basename = av_mallocz(len);
458 if (!hls->key_basename)
459 return AVERROR(ENOMEM);
461 av_strlcpy(hls->key_basename, s->filename, len);
462 av_strlcat(hls->key_basename, ".key", len);
465 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
466 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
468 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
469 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
472 if (!*hls->iv_string) {
473 uint8_t iv[16] = { 0 };
477 AV_WB64(iv + 8, vs->sequence);
479 memcpy(iv, hls->iv, sizeof(iv));
481 ff_data_to_hex(buf, iv, sizeof(iv), 0);
483 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
486 if (!*hls->key_uri) {
487 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
488 return AVERROR(EINVAL);
491 if (!*hls->key_file) {
492 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
493 return AVERROR(EINVAL);
496 if (!*hls->key_string) {
498 if ((ret = randomize(key, sizeof(key))) < 0) {
499 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
503 memcpy(key, hls->key, sizeof(key));
506 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
507 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
509 avio_seek(pb, 0, SEEK_CUR);
510 avio_write(pb, key, KEYSIZE);
517 static int hls_encryption_start(AVFormatContext *s)
519 HLSContext *hls = s->priv_data;
522 uint8_t key[KEYSIZE];
524 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
525 av_log(hls, AV_LOG_ERROR,
526 "error opening key info file %s\n", hls->key_info_file);
530 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
531 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
533 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
534 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
536 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
537 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
539 ff_format_io_close(s, &pb);
541 if (!*hls->key_uri) {
542 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
543 return AVERROR(EINVAL);
546 if (!*hls->key_file) {
547 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
548 return AVERROR(EINVAL);
551 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
552 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
556 ret = avio_read(pb, key, sizeof(key));
557 ff_format_io_close(s, &pb);
558 if (ret != sizeof(key)) {
559 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
560 if (ret >= 0 || ret == AVERROR_EOF)
561 ret = AVERROR(EINVAL);
564 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
569 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
571 int len = ff_get_line(s, buf, maxlen);
572 while (len > 0 && av_isspace(buf[len - 1]))
577 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
579 AVDictionary *options = NULL;
580 HLSContext *hls = s->priv_data;
582 AVFormatContext *vtt_oc = NULL;
583 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
586 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
591 oc->filename[0] = '\0';
592 oc->oformat = vs->oformat;
593 oc->interrupt_callback = s->interrupt_callback;
594 oc->max_delay = s->max_delay;
595 oc->opaque = s->opaque;
596 oc->io_open = s->io_open;
597 oc->io_close = s->io_close;
598 av_dict_copy(&oc->metadata, s->metadata, 0);
600 if(vs->vtt_oformat) {
601 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
604 vtt_oc = vs->vtt_avf;
605 vtt_oc->oformat = vs->vtt_oformat;
606 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
609 for (i = 0; i < vs->nb_streams; i++) {
611 AVFormatContext *loc;
612 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
617 if (!(st = avformat_new_stream(loc, NULL)))
618 return AVERROR(ENOMEM);
619 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
620 if (!oc->oformat->codec_tag ||
621 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
622 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
623 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
625 st->codecpar->codec_tag = 0;
628 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
629 st->time_base = vs->streams[i]->time_base;
630 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
633 vs->packets_written = 1;
636 vs->fmp4_init_mode = 0;
638 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
639 if (hls->max_seg_size > 0) {
640 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
641 return AVERROR_PATCHWELCOME;
644 vs->packets_written = 0;
645 vs->init_range_length = 0;
646 vs->fmp4_init_mode = !byterange_mode;
647 set_http_options(s, &options, hls);
648 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
651 if ((ret = s->io_open(s, &vs->out, vs->base_output_dirname, AVIO_FLAG_WRITE, &options)) < 0) {
652 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
656 if (hls->format_options_str) {
657 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
659 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
660 hls->format_options_str);
665 av_dict_copy(&options, hls->format_options, 0);
666 av_dict_set(&options, "fflags", "-autobsf", 0);
667 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
668 ret = avformat_init_output(oc, &options);
671 if (av_dict_count(options)) {
672 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
673 av_dict_free(&options);
674 return AVERROR(EINVAL);
677 av_dict_free(&options);
682 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
685 if (!av_strcasecmp(segment->filename,filename))
687 segment = segment->next;
689 return (HLSSegment *) NULL;
692 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
693 VariantStream *vs, HLSSegment *en,
694 double duration, int64_t pos, int64_t size)
696 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
697 strlen(vs->current_segment_final_filename_fmt)) {
698 av_strlcpy(vs->avf->filename, vs->current_segment_final_filename_fmt, sizeof(vs->avf->filename));
699 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
700 char * filename = av_strdup(vs->avf->filename); // %%s will be %s after strftime
703 return AVERROR(ENOMEM);
705 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
706 filename, 's', pos + size) < 1) {
707 av_log(hls, AV_LOG_ERROR,
708 "Invalid second level segment filename template '%s', "
709 "you can try to remove second_level_segment_size flag\n",
713 return AVERROR(EINVAL);
717 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
718 char * filename = av_strdup(vs->avf->filename); // %%t will be %t after strftime
721 return AVERROR(ENOMEM);
723 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
724 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
725 av_log(hls, AV_LOG_ERROR,
726 "Invalid second level segment filename template '%s', "
727 "you can try to remove second_level_segment_time flag\n",
731 return AVERROR(EINVAL);
739 static int sls_flag_check_duration_size_index(HLSContext *hls)
743 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
744 av_log(hls, AV_LOG_ERROR,
745 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
746 ret = AVERROR(EINVAL);
748 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
749 av_log(hls, AV_LOG_ERROR,
750 "second_level_segment_size hls_flag requires use_localtime to be true\n");
751 ret = AVERROR(EINVAL);
753 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
754 av_log(hls, AV_LOG_ERROR,
755 "second_level_segment_index hls_flag requires use_localtime to be true\n");
756 ret = AVERROR(EINVAL);
762 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
764 const char *proto = avio_find_protocol_name(vs->basename);
765 int segment_renaming_ok = proto && !strcmp(proto, "file");
768 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
769 av_log(hls, AV_LOG_ERROR,
770 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
771 ret = AVERROR(EINVAL);
773 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
774 av_log(hls, AV_LOG_ERROR,
775 "second_level_segment_size hls_flag works only with file protocol segment names\n");
776 ret = AVERROR(EINVAL);
782 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
783 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
784 strlen(vs->current_segment_final_filename_fmt)) {
785 ff_rename(old_filename, vs->avf->filename, hls);
789 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
791 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
792 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
794 return AVERROR(ENOMEM);
795 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
797 filename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
799 filename, 'd', vs->sequence) < 1) {
801 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
802 "you can try to remove second_level_segment_index flag\n",
805 return AVERROR(EINVAL);
809 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
810 av_strlcpy(vs->current_segment_final_filename_fmt, oc->filename,
811 sizeof(vs->current_segment_final_filename_fmt));
812 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
813 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
815 return AVERROR(ENOMEM);
816 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
817 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
818 "you can try to remove second_level_segment_size flag\n",
821 return AVERROR(EINVAL);
825 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
826 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
828 return AVERROR(ENOMEM);
829 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
830 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
831 "you can try to remove second_level_segment_time flag\n",
834 return AVERROR(EINVAL);
842 /* Create a new segment and append it to the segment list */
843 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
844 VariantStream *vs, double duration, int64_t pos,
847 HLSSegment *en = av_malloc(sizeof(*en));
848 const char *filename;
849 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
853 return AVERROR(ENOMEM);
855 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
860 filename = av_basename(vs->avf->filename);
862 if (hls->use_localtime_mkdir) {
863 filename = vs->avf->filename;
865 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
866 && !byterange_mode) {
867 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
869 av_strlcpy(en->filename, filename, sizeof(en->filename));
872 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->filename), sizeof(en->sub_filename));
874 en->sub_filename[0] = '\0';
876 en->duration = duration;
882 if (vs->discontinuity) {
884 vs->discontinuity = 0;
887 if (hls->key_info_file || hls->encrypt) {
888 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
889 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
895 vs->last_segment->next = en;
897 vs->last_segment = en;
899 // EVENT or VOD playlists imply sliding window cannot be used
900 if (hls->pl_type != PLAYLIST_TYPE_NONE)
901 hls->max_nb_segments = 0;
903 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
905 vs->initial_prog_date_time += en->duration;
906 vs->segments = en->next;
907 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
909 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
911 !(hls->flags & HLS_SINGLE_FILE)) {
913 en->next = vs->old_segments;
914 vs->old_segments = en;
915 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
922 if (hls->max_seg_size > 0) {
930 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
932 HLSContext *hls = s->priv_data;
934 int ret = 0, is_segment = 0;
935 int64_t new_start_pos;
940 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
941 &s->interrupt_callback, NULL,
942 s->protocol_whitelist, s->protocol_blacklist)) < 0)
945 read_chomp_line(in, line, sizeof(line));
946 if (strcmp(line, "#EXTM3U")) {
947 ret = AVERROR_INVALIDDATA;
951 vs->discontinuity = 0;
952 while (!avio_feof(in)) {
953 read_chomp_line(in, line, sizeof(line));
954 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
955 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
956 if (tmp_sequence < vs->sequence)
957 av_log(hls, AV_LOG_VERBOSE,
958 "Found playlist sequence number was smaller """
959 "than specified start sequence number: %"PRId64" < %"PRId64", "
960 "omitting\n", tmp_sequence, hls->start_sequence);
962 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
963 vs->sequence = tmp_sequence;
965 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
967 vs->discontinuity = 1;
968 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
970 vs->duration = atof(ptr);
971 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
972 ptr = av_stristr(line, "URI=\"");
974 ptr += strlen("URI=\"");
975 end = av_stristr(ptr, ",");
977 av_strlcpy(hls->key_uri, ptr, end - ptr);
979 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
983 ptr = av_stristr(line, "IV=0x");
985 ptr += strlen("IV=0x");
986 end = av_stristr(ptr, ",");
988 av_strlcpy(hls->iv_string, ptr, end - ptr);
990 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
994 } else if (av_strstart(line, "#", NULL)) {
996 } else if (line[0]) {
999 new_start_pos = avio_tell(vs->avf->pb);
1000 vs->size = new_start_pos - vs->start_pos;
1001 av_strlcpy(vs->avf->filename, line, sizeof(line));
1002 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1005 vs->start_pos = new_start_pos;
1015 static void hls_free_segments(HLSSegment *p)
1026 static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version,
1027 int target_duration, int64_t sequence)
1029 avio_printf(out, "#EXTM3U\n");
1030 avio_printf(out, "#EXT-X-VERSION:%d\n", version);
1031 if (hls->allowcache == 0 || hls->allowcache == 1) {
1032 avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
1034 avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
1035 avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
1036 av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
1039 static void hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1041 size_t len = strlen(oc->filename);
1042 char final_filename[sizeof(oc->filename)];
1044 av_strlcpy(final_filename, oc->filename, len);
1045 final_filename[len-4] = '\0';
1046 ff_rename(oc->filename, final_filename, s);
1047 oc->filename[len-4] = '\0';
1050 static int get_relative_url(const char *master_url, const char *media_url,
1051 char *rel_url, int rel_url_buf_size)
1055 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1056 strrchr(master_url, '\\');
1058 base_len = FFABS(p - master_url);
1059 if (av_strncasecmp(master_url, media_url, base_len)) {
1060 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1061 return AVERROR(EINVAL);
1064 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1068 static int create_master_playlist(AVFormatContext *s,
1069 VariantStream * const input_vs)
1071 HLSContext *hls = s->priv_data;
1073 AVStream *vid_st, *aud_st;
1074 AVIOContext *master_pb = 0;
1075 AVDictionary *options = NULL;
1077 int m3u8_name_size, ret, bandwidth;
1078 char *m3u8_rel_name;
1080 input_vs->m3u8_created = 1;
1081 if (!hls->master_m3u8_created) {
1082 /* For the first time, wait until all the media playlists are created */
1083 for (i = 0; i < hls->nb_varstreams; i++)
1084 if (!hls->var_streams[i].m3u8_created)
1087 /* Keep publishing the master playlist at the configured rate */
1088 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1089 input_vs->number % hls->master_publish_rate)
1093 set_http_options(s, &options, hls);
1095 ret = s->io_open(s, &master_pb, hls->master_m3u8_url, AVIO_FLAG_WRITE,\
1097 av_dict_free(&options);
1099 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1100 hls->master_m3u8_url);
1104 avio_printf(master_pb, "#EXTM3U\n");
1105 avio_printf(master_pb, "#EXT-X-VERSION:%d\n", hls->version);
1107 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1108 for (i = 0; i < hls->nb_varstreams; i++) {
1109 vs = &(hls->var_streams[i]);
1111 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1112 m3u8_rel_name = av_malloc(m3u8_name_size);
1113 if (!m3u8_rel_name) {
1114 ret = AVERROR(ENOMEM);
1117 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1118 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1119 m3u8_rel_name, m3u8_name_size);
1121 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1127 for (j = 0; j < vs->nb_streams; j++) {
1128 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1129 vid_st = vs->streams[j];
1130 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1131 aud_st = vs->streams[j];
1134 if (!vid_st && !aud_st) {
1135 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1141 bandwidth += vid_st->codecpar->bit_rate;
1143 bandwidth += aud_st->codecpar->bit_rate;
1144 bandwidth += bandwidth / 10;
1147 av_log(NULL, AV_LOG_WARNING,
1148 "Bandwidth info not available, set audio and video bitrates\n");
1149 av_freep(&m3u8_rel_name);
1153 avio_printf(master_pb, "#EXT-X-STREAM-INF:BANDWIDTH=%d", bandwidth);
1154 if (vid_st && vid_st->codecpar->width > 0 && vid_st->codecpar->height > 0)
1155 avio_printf(master_pb, ",RESOLUTION=%dx%d", vid_st->codecpar->width,
1156 vid_st->codecpar->height);
1157 avio_printf(master_pb, "\n%s\n\n", 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 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1189 if (byterange_mode) {
1194 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1198 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1202 if (!use_rename && !warned_non_file++)
1203 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1205 set_http_options(s, &options, hls);
1206 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1207 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
1210 for (en = vs->segments; en; en = en->next) {
1211 if (target_duration <= en->duration)
1212 target_duration = get_int_from_double(en->duration);
1215 vs->discontinuity_set = 0;
1216 write_m3u8_head_block(hls, out, hls->version, target_duration, sequence);
1217 if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
1218 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
1219 } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
1220 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
1223 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1224 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
1225 vs->discontinuity_set = 1;
1227 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1228 avio_printf(out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1230 for (en = vs->segments; en; en = en->next) {
1231 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1232 av_strcasecmp(en->iv_string, iv_string))) {
1233 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1235 avio_printf(out, ",IV=0x%s", en->iv_string);
1236 avio_printf(out, "\n");
1237 key_uri = en->key_uri;
1238 iv_string = en->iv_string;
1242 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
1245 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1246 avio_printf(out, "#EXT-X-MAP:URI=\"%s\"", vs->fmp4_init_filename);
1247 if (hls->flags & HLS_SINGLE_FILE) {
1248 avio_printf(out, ",BYTERANGE=\"%"PRId64"@%"PRId64"\"", en->size, en->pos);
1250 avio_printf(out, "\n");
1252 if (hls->flags & HLS_ROUND_DURATIONS)
1253 avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
1255 avio_printf(out, "#EXTINF:%f,\n", en->duration);
1257 avio_printf(out, "#EXT-X-BYTERANGE:%"PRId64"@%"PRId64"\n",
1260 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1261 time_t tt, wrongsecs;
1263 struct tm *tm, tmpbuf;
1264 char buf0[128], buf1[128];
1265 tt = (int64_t)prog_date_time;
1266 milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
1267 tm = localtime_r(&tt, &tmpbuf);
1268 strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
1269 if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
1270 int tz_min, dst = tm->tm_isdst;
1271 tm = gmtime_r(&tt, &tmpbuf);
1273 wrongsecs = mktime(tm);
1274 tz_min = (FFABS(wrongsecs - tt) + 30) / 60;
1275 snprintf(buf1, sizeof(buf1),
1277 wrongsecs <= tt ? '+' : '-',
1281 avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
1282 prog_date_time += en->duration;
1285 avio_printf(out, "%s", vs->baseurl);
1286 avio_printf(out, "%s\n", en->filename);
1289 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1290 avio_printf(out, "#EXT-X-ENDLIST\n");
1292 if( vs->vtt_m3u8_name ) {
1293 if ((ret = s->io_open(s, &sub_out, vs->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
1295 write_m3u8_head_block(hls, sub_out, hls->version, target_duration, sequence);
1297 for (en = vs->segments; en; en = en->next) {
1298 avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
1300 avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
1303 avio_printf(sub_out, "%s", vs->baseurl);
1304 avio_printf(sub_out, "%s\n", en->sub_filename);
1308 avio_printf(sub_out, "#EXT-X-ENDLIST\n");
1313 av_dict_free(&options);
1314 ff_format_io_close(s, &out);
1315 ff_format_io_close(s, &sub_out);
1316 if (ret >= 0 && use_rename)
1317 ff_rename(temp_filename, vs->m3u8_name, s);
1319 if (ret >= 0 && hls->master_pl_name)
1320 if (create_master_playlist(s, vs) < 0)
1321 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1326 static int hls_start(AVFormatContext *s, VariantStream *vs)
1328 HLSContext *c = s->priv_data;
1329 AVFormatContext *oc = vs->avf;
1330 AVFormatContext *vtt_oc = vs->vtt_avf;
1331 AVDictionary *options = NULL;
1332 char *filename, iv_string[KEYSIZE*2 + 1];
1335 if (c->flags & HLS_SINGLE_FILE) {
1336 av_strlcpy(oc->filename, vs->basename,
1337 sizeof(oc->filename));
1338 if (vs->vtt_basename)
1339 av_strlcpy(vtt_oc->filename, vs->vtt_basename,
1340 sizeof(vtt_oc->filename));
1341 } else if (c->max_seg_size > 0) {
1342 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1344 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1346 vs->basename, 'd', vs->sequence) < 1) {
1348 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1349 return AVERROR(EINVAL);
1352 if (c->use_localtime) {
1354 struct tm *tm, tmpbuf;
1356 tm = localtime_r(&now0, &tmpbuf);
1357 if (!strftime(oc->filename, sizeof(oc->filename), vs->basename, tm)) {
1358 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1359 return AVERROR(EINVAL);
1362 err = sls_flag_use_localtime_filename(oc, c, vs);
1364 return AVERROR(ENOMEM);
1367 if (c->use_localtime_mkdir) {
1369 char *fn_copy = av_strdup(oc->filename);
1371 return AVERROR(ENOMEM);
1373 dir = av_dirname(fn_copy);
1374 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1375 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1377 return AVERROR(errno);
1381 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1383 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1385 vs->basename, 'd', vs->sequence) < 1) {
1387 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1388 return AVERROR(EINVAL);
1390 if( vs->vtt_basename) {
1391 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
1393 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1395 vs->vtt_basename, 'd', vs->sequence) < 1) {
1397 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1398 return AVERROR(EINVAL);
1404 set_http_options(s, &options, c);
1406 if (c->flags & HLS_TEMP_FILE) {
1407 av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
1410 if (c->key_info_file || c->encrypt) {
1411 if (c->key_info_file && c->encrypt) {
1412 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1413 " will use -hls_key_info_file priority\n");
1416 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1417 if (c->key_info_file) {
1418 if ((err = hls_encryption_start(s)) < 0)
1421 if ((err = do_encrypt(s, vs)) < 0)
1424 c->encrypt_started = 1;
1426 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1429 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1431 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1432 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1435 filename = av_asprintf("crypto:%s", oc->filename);
1437 err = AVERROR(ENOMEM);
1440 err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
1442 av_dict_free(&options);
1446 if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
1448 if (vs->vtt_basename) {
1449 set_http_options(s, &options, c);
1450 if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
1453 av_dict_free(&options);
1455 if (c->segment_type == SEGMENT_TYPE_FMP4 && !(c->flags & HLS_SINGLE_FILE)) {
1458 /* We only require one PAT/PMT per segment. */
1459 if (oc->oformat->priv_class && oc->priv_data) {
1462 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1464 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1465 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1466 av_opt_set(oc->priv_data, "pat_period", period, 0);
1470 if (vs->vtt_basename) {
1471 err = avformat_write_header(vtt_oc,NULL);
1478 av_dict_free(&options);
1483 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1486 time_t t = time(NULL);
1487 struct tm *p, tmbuf;
1488 HLSContext *hls = s->priv_data;
1490 p = localtime_r(&t, &tmbuf);
1491 // no %s support when strftime returned error or left format string unchanged
1492 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1493 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1494 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1496 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1499 static int format_name(char *name, int name_buf_len, int i)
1502 char extension[10] = {'\0'};
1504 p = strrchr(name, '.');
1506 av_strlcpy(extension, p, sizeof(extension));
1510 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1512 if (strlen(extension))
1513 av_strlcat(name, extension, name_buf_len);
1518 static int get_nth_codec_stream_index(AVFormatContext *s,
1519 enum AVMediaType codec_type,
1522 unsigned int stream_index, cnt;
1523 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1526 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1527 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1529 if (cnt == stream_id)
1530 return stream_index;
1536 static int parse_variant_stream_mapstring(AVFormatContext *s)
1538 HLSContext *hls = s->priv_data;
1541 enum AVMediaType codec_type;
1542 int nb_varstreams, nb_streams;
1543 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1547 * Expected format for var_stream_map string is as below:
1549 * This string specifies how to group the audio, video and subtitle streams
1550 * into different variant streams. The variant stream groups are separated
1553 * a:, v:, s: are keys to specify audio, video and subtitle streams
1554 * respectively. Allowed values are 0 to 9 digits (limited just based on
1558 p = av_strdup(hls->var_stream_map);
1560 while(av_strtok(q, " \t", &saveptr1)) {
1562 hls->nb_varstreams++;
1566 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1567 if (!hls->var_streams)
1568 return AVERROR(ENOMEM);
1570 p = hls->var_stream_map;
1572 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1575 if (nb_varstreams < hls->nb_varstreams)
1576 vs = &(hls->var_streams[nb_varstreams++]);
1578 return AVERROR(EINVAL);
1581 while (q < varstr + strlen(varstr)) {
1582 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1583 !av_strncasecmp(q, "s:", 2))
1587 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1589 return AVERROR(ENOMEM);
1592 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1595 if (av_strstart(keyval, "v:", &val)) {
1596 codec_type = AVMEDIA_TYPE_VIDEO;
1597 } else if (av_strstart(keyval, "a:", &val)) {
1598 codec_type = AVMEDIA_TYPE_AUDIO;
1599 } else if (av_strstart(keyval, "s:", &val)) {
1600 codec_type = AVMEDIA_TYPE_SUBTITLE;
1602 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1603 return AVERROR(EINVAL);
1607 if (av_isdigit(*val))
1608 stream_index = get_nth_codec_stream_index (s, codec_type,
1611 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1612 vs->streams[nb_streams++] = s->streams[stream_index];
1614 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1615 return AVERROR(EINVAL);
1619 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1620 hls->nb_varstreams);
1625 static int update_variant_stream_info(AVFormatContext *s) {
1626 HLSContext *hls = s->priv_data;
1629 if (hls->var_stream_map) {
1630 return parse_variant_stream_mapstring(s);
1632 //By default, a single variant stream with all the codec streams is created
1633 hls->nb_varstreams = 1;
1634 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1635 hls->nb_varstreams);
1636 if (!hls->var_streams)
1637 return AVERROR(ENOMEM);
1639 hls->var_streams[0].nb_streams = s->nb_streams;
1640 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1641 hls->var_streams[0].nb_streams);
1642 if (!hls->var_streams[0].streams)
1643 return AVERROR(ENOMEM);
1645 for (i = 0; i < s->nb_streams; i++)
1646 hls->var_streams[0].streams[i] = s->streams[i];
1651 static int update_master_pl_info(AVFormatContext *s) {
1652 HLSContext *hls = s->priv_data;
1653 int m3u8_name_size, ret;
1656 m3u8_name_size = strlen(s->filename) + strlen(hls->master_pl_name) + 1;
1657 hls->master_m3u8_url = av_malloc(m3u8_name_size);
1658 if (!hls->master_m3u8_url) {
1659 ret = AVERROR(ENOMEM);
1663 av_strlcpy(hls->master_m3u8_url, s->filename, m3u8_name_size);
1664 p = strrchr(hls->master_m3u8_url, '/') ?
1665 strrchr(hls->master_m3u8_url, '/') :
1666 strrchr(hls->master_m3u8_url, '\\');
1669 av_strlcat(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1671 av_strlcpy(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1677 static int hls_write_header(AVFormatContext *s)
1679 HLSContext *hls = s->priv_data;
1682 const char *pattern = "%d.ts";
1683 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
1684 const char *vtt_pattern = "%d.vtt";
1685 AVDictionary *options = NULL;
1686 int basename_size = 0;
1687 int vtt_basename_size = 0, m3u8_name_size = 0;
1688 VariantStream *vs = NULL;
1689 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
1691 ret = update_variant_stream_info(s);
1693 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
1698 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
1699 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
1700 ret = AVERROR(EINVAL);
1701 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
1705 if (hls->master_pl_name) {
1706 ret = update_master_pl_info(s);
1708 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
1714 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1717 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
1718 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
1719 time_t t = time(NULL); // we will need it in either case
1720 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
1721 hls->start_sequence = (int64_t)t;
1722 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1724 struct tm *p, tmbuf;
1725 if (!(p = localtime_r(&t, &tmbuf)))
1726 return AVERROR(ENOMEM);
1727 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1728 return AVERROR(ENOMEM);
1729 hls->start_sequence = strtoll(b, NULL, 10);
1731 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1734 for (i = 0; i < hls->nb_varstreams; i++) {
1735 vs = &hls->var_streams[i];
1737 vs->sequence = hls->start_sequence;
1738 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1739 vs->start_pts = AV_NOPTS_VALUE;
1740 vs->current_segment_final_filename_fmt[0] = '\0';
1742 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1743 // Independent segments cannot be guaranteed when splitting by time
1744 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
1745 av_log(s, AV_LOG_WARNING,
1746 "'split_by_time' and 'independent_segments' cannot be enabled together. "
1747 "Disabling 'independent_segments' flag\n");
1750 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1753 vs->initial_prog_date_time = now0;
1756 if (hls->format_options_str) {
1757 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
1759 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
1764 for (j = 0; j < vs->nb_streams; j++) {
1766 vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1768 vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1771 if (vs->has_video > 1)
1772 av_log(s, AV_LOG_WARNING,
1773 "More than a single video stream present, "
1774 "expect issues decoding it.\n");
1776 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1777 vs->oformat = av_guess_format("mp4", NULL, NULL);
1779 vs->oformat = av_guess_format("mpegts", NULL, NULL);
1783 ret = AVERROR_MUXER_NOT_FOUND;
1787 if(vs->has_subtitle) {
1788 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1790 ret = AVERROR_MUXER_NOT_FOUND;
1795 if (hls->segment_filename) {
1796 basename_size = strlen(hls->segment_filename) + 1;
1797 if (hls->nb_varstreams > 1) {
1798 basename_size += strlen(POSTFIX_PATTERN);
1800 vs->basename = av_malloc(basename_size);
1801 if (!vs->basename) {
1802 ret = AVERROR(ENOMEM);
1806 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
1808 if (hls->flags & HLS_SINGLE_FILE) {
1809 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1816 if (hls->use_localtime) {
1817 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1819 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1822 if (hls->nb_varstreams > 1) {
1823 basename_size += strlen(POSTFIX_PATTERN);
1826 vs->basename = av_malloc(basename_size);
1827 if (!vs->basename) {
1828 ret = AVERROR(ENOMEM);
1832 av_strlcpy(vs->basename, s->filename, basename_size);
1834 p = strrchr(vs->basename, '.');
1837 if (hls->use_localtime) {
1838 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
1840 av_strlcat(vs->basename, pattern, basename_size);
1844 m3u8_name_size = strlen(s->filename) + 1;
1845 if (hls->nb_varstreams > 1) {
1846 m3u8_name_size += strlen(POSTFIX_PATTERN);
1849 vs->m3u8_name = av_malloc(m3u8_name_size);
1850 if (!vs->m3u8_name ) {
1851 ret = AVERROR(ENOMEM);
1855 av_strlcpy(vs->m3u8_name, s->filename, m3u8_name_size);
1857 if (hls->nb_varstreams > 1) {
1858 ret = format_name(vs->basename, basename_size, i);
1861 ret = format_name(vs->m3u8_name, m3u8_name_size, i);
1866 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1867 if (hls->nb_varstreams > 1)
1868 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
1869 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
1870 if (!vs->fmp4_init_filename ) {
1871 ret = AVERROR(ENOMEM);
1874 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
1875 fmp4_init_filename_len);
1876 if (hls->nb_varstreams > 1) {
1877 ret = format_name(vs->fmp4_init_filename, fmp4_init_filename_len, i);
1882 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
1883 fmp4_init_filename_len = strlen(vs->fmp4_init_filename) + 1;
1884 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
1885 if (!vs->base_output_dirname) {
1886 ret = AVERROR(ENOMEM);
1889 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
1890 fmp4_init_filename_len);
1892 fmp4_init_filename_len = strlen(vs->m3u8_name) +
1893 strlen(vs->fmp4_init_filename) + 1;
1895 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
1896 if (!vs->base_output_dirname) {
1897 ret = AVERROR(ENOMEM);
1901 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
1902 fmp4_init_filename_len);
1903 p = strrchr(vs->base_output_dirname, '/');
1906 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
1907 fmp4_init_filename_len);
1909 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
1910 fmp4_init_filename_len);
1915 if (!hls->use_localtime) {
1916 ret = sls_flag_check_duration_size_index(hls);
1921 ret = sls_flag_check_duration_size(hls, vs);
1926 if(vs->has_subtitle) {
1928 if (hls->flags & HLS_SINGLE_FILE)
1929 vtt_pattern = ".vtt";
1930 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1931 if (hls->nb_varstreams > 1) {
1932 vtt_basename_size += strlen(POSTFIX_PATTERN);
1935 vs->vtt_basename = av_malloc(vtt_basename_size);
1936 if (!vs->vtt_basename) {
1937 ret = AVERROR(ENOMEM);
1940 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
1941 if (!vs->vtt_m3u8_name ) {
1942 ret = AVERROR(ENOMEM);
1945 av_strlcpy(vs->vtt_basename, s->filename, vtt_basename_size);
1946 p = strrchr(vs->vtt_basename, '.');
1950 if( hls->subtitle_filename ) {
1951 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
1953 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
1954 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1956 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
1958 if (hls->nb_varstreams > 1) {
1959 ret= format_name(vs->vtt_basename, vtt_basename_size, i);
1962 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
1970 baseurl_len = strlen(hls->baseurl);
1971 vs->baseurl = av_malloc(baseurl_len);
1973 ret = AVERROR(ENOMEM);
1976 av_strlcpy(vs->baseurl, hls->baseurl, baseurl_len);
1979 if ((hls->flags & HLS_SINGLE_FILE) && (hls->segment_type == SEGMENT_TYPE_FMP4)) {
1980 vs->fmp4_init_filename = av_strdup(vs->basename);
1981 if (!vs->fmp4_init_filename) {
1982 ret = AVERROR(ENOMEM);
1987 if ((ret = hls_mux_init(s, vs)) < 0)
1990 if (hls->flags & HLS_APPEND_LIST) {
1991 parse_playlist(s, vs->m3u8_name, vs);
1992 vs->discontinuity = 1;
1993 if (hls->init_time > 0) {
1994 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1995 " hls_init_time value will have no effect\n");
1997 hls->recording_time = hls->time * AV_TIME_BASE;
2001 if (hls->segment_type != SEGMENT_TYPE_FMP4 || hls->flags & HLS_SINGLE_FILE) {
2002 if ((ret = hls_start(s, vs)) < 0)
2006 av_dict_copy(&options, hls->format_options, 0);
2007 ret = avformat_write_header(vs->avf, &options);
2008 if (av_dict_count(options)) {
2009 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2010 ret = AVERROR(EINVAL);
2011 av_dict_free(&options);
2014 av_dict_free(&options);
2015 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2016 for (j = 0; j < vs->nb_streams; j++) {
2018 AVStream *outer_st = vs->streams[j];
2020 if (hls->max_seg_size > 0) {
2021 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2022 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2023 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2024 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2025 outer_st->codecpar->bit_rate, hls->max_seg_size);
2029 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2030 inner_st = vs->avf->streams[j];
2031 else if (vs->vtt_avf)
2032 inner_st = vs->vtt_avf->streams[0];
2034 /* We have a subtitle stream, when the user does not want one */
2038 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2044 av_freep(&hls->key_basename);
2045 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2046 vs = &hls->var_streams[i];
2047 av_freep(&vs->basename);
2048 av_freep(&vs->vtt_basename);
2049 av_freep(&vs->fmp4_init_filename);
2050 av_freep(&vs->m3u8_name);
2051 av_freep(&vs->vtt_m3u8_name);
2052 av_freep(&vs->streams);
2053 av_freep(&vs->baseurl);
2055 avformat_free_context(vs->avf);
2057 avformat_free_context(vs->vtt_avf);
2059 av_freep(&hls->var_streams);
2060 av_freep(&hls->master_m3u8_url);
2065 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2067 HLSContext *hls = s->priv_data;
2068 AVFormatContext *oc = NULL;
2069 AVStream *st = s->streams[pkt->stream_index];
2070 int64_t end_pts = 0;
2072 int ret = 0, can_split = 1, i, j;
2073 int stream_index = 0;
2074 int range_length = 0;
2075 uint8_t *buffer = NULL;
2076 VariantStream *vs = NULL;
2078 for (i = 0; i < hls->nb_varstreams; i++) {
2079 vs = &hls->var_streams[i];
2080 for (j = 0; j < vs->nb_streams; j++) {
2081 if (vs->streams[j] == st) {
2082 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2098 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2099 return AVERROR(ENOMEM);
2102 end_pts = hls->recording_time * vs->number;
2104 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2105 /* reset end_pts, hls->recording_time at end of the init hls list */
2106 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2107 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
2108 hls->recording_time = hls->time * AV_TIME_BASE;
2109 end_pts = init_list_dur + after_init_list_dur ;
2112 if (vs->start_pts == AV_NOPTS_VALUE) {
2113 vs->start_pts = pkt->pts;
2114 vs->end_pts = pkt->pts;
2117 if (vs->has_video) {
2118 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2119 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2120 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2122 if (pkt->pts == AV_NOPTS_VALUE)
2123 is_ref_pkt = can_split = 0;
2126 if (vs->new_start) {
2128 vs->duration = (double)(pkt->pts - vs->end_pts)
2129 * st->time_base.num / st->time_base.den;
2130 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2132 if (pkt->duration) {
2133 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2135 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2136 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2142 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2143 end_pts, AV_TIME_BASE_Q) >= 0) {
2144 int64_t new_start_pos;
2145 char *old_filename = av_strdup(vs->avf->filename);
2146 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2148 if (!old_filename) {
2149 return AVERROR(ENOMEM);
2152 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2154 new_start_pos = avio_tell(vs->avf->pb);
2155 vs->size = new_start_pos - vs->start_pos;
2157 if (!byterange_mode) {
2158 if (hls->segment_type == SEGMENT_TYPE_FMP4 && !vs->init_range_length) {
2160 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2161 avio_write(vs->out, buffer, range_length);
2162 vs->init_range_length = range_length;
2163 avio_open_dyn_buf(&oc->pb);
2164 vs->packets_written = 0;
2165 ff_format_io_close(s, &vs->out);
2167 ff_format_io_close(s, &oc->pb);
2170 ff_format_io_close(s, &vs->vtt_avf->pb);
2173 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
2174 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2175 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2176 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2177 hls_rename_temp_file(s, oc);
2180 if (vs->fmp4_init_mode) {
2184 if (!vs->fmp4_init_mode || byterange_mode)
2185 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2186 vs->start_pos = new_start_pos;
2188 av_free(old_filename);
2192 vs->end_pts = pkt->pts;
2195 vs->fmp4_init_mode = 0;
2196 if (hls->flags & HLS_SINGLE_FILE) {
2198 } else if (hls->max_seg_size > 0) {
2199 if (vs->start_pos >= hls->max_seg_size) {
2201 sls_flag_file_rename(hls, vs, old_filename);
2202 ret = hls_start(s, vs);
2204 /* When split segment by byte, the duration is short than hls_time,
2205 * so it is not enough one segment duration as hls_time, */
2210 sls_flag_file_rename(hls, vs, old_filename);
2211 ret = hls_start(s, vs);
2213 av_free(old_filename);
2219 if (!vs->fmp4_init_mode || byterange_mode)
2220 if ((ret = hls_window(s, 0, vs)) < 0) {
2225 vs->packets_written++;
2226 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2231 static int hls_write_trailer(struct AVFormatContext *s)
2233 HLSContext *hls = s->priv_data;
2234 AVFormatContext *oc = NULL;
2235 AVFormatContext *vtt_oc = NULL;
2236 char *old_filename = NULL;
2238 VariantStream *vs = NULL;
2240 for (i = 0; i < hls->nb_varstreams; i++) {
2241 vs = &hls->var_streams[i];
2244 vtt_oc = vs->vtt_avf;
2245 old_filename = av_strdup(vs->avf->filename);
2247 if (!old_filename) {
2248 return AVERROR(ENOMEM);
2252 av_write_trailer(oc);
2254 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2255 ff_format_io_close(s, &oc->pb);
2257 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
2258 hls_rename_temp_file(s, oc);
2261 /* after av_write_trailer, then duration + 1 duration per packet */
2262 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2265 sls_flag_file_rename(hls, vs, old_filename);
2269 av_write_trailer(vtt_oc);
2270 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2271 ff_format_io_close(s, &vtt_oc->pb);
2273 av_freep(&vs->basename);
2274 av_freep(&vs->base_output_dirname);
2275 avformat_free_context(oc);
2278 hls_window(s, 1, vs);
2280 av_freep(&vs->fmp4_init_filename);
2282 av_freep(&vs->vtt_basename);
2283 av_freep(&vs->vtt_m3u8_name);
2284 avformat_free_context(vtt_oc);
2287 hls_free_segments(vs->segments);
2288 hls_free_segments(vs->old_segments);
2289 av_free(old_filename);
2290 av_freep(&vs->m3u8_name);
2291 av_freep(&vs->streams);
2292 av_freep(&vs->baseurl);
2295 av_freep(&hls->key_basename);
2296 av_freep(&hls->var_streams);
2297 av_freep(&hls->master_m3u8_url);
2301 #define OFFSET(x) offsetof(HLSContext, x)
2302 #define E AV_OPT_FLAG_ENCODING_PARAM
2303 static const AVOption options[] = {
2304 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2305 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2306 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2307 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2308 {"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},
2309 {"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},
2311 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2313 {"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},
2314 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2315 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2316 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2317 {"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},
2318 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2319 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2320 {"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},
2321 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2322 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2323 {"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"},
2324 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2325 {"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"},
2326 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2327 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2328 {"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"},
2329 {"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"},
2330 {"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"},
2331 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2332 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2333 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2334 {"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"},
2335 {"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"},
2336 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2337 {"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"},
2338 {"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"},
2339 {"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"},
2340 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2341 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2342 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2343 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2344 {"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" },
2345 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2346 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2347 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2348 {"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" },
2349 {"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" },
2350 {"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" },
2351 {"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" },
2352 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2353 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2354 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2355 {"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},
2359 static const AVClass hls_class = {
2360 .class_name = "hls muxer",
2361 .item_name = av_default_item_name,
2363 .version = LIBAVUTIL_VERSION_INT,
2367 AVOutputFormat ff_hls_muxer = {
2369 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2370 .extensions = "m3u8",
2371 .priv_data_size = sizeof(HLSContext),
2372 .audio_codec = AV_CODEC_ID_AAC,
2373 .video_codec = AV_CODEC_ID_H264,
2374 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2375 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2376 .write_header = hls_write_header,
2377 .write_packet = hls_write_packet,
2378 .write_trailer = hls_write_trailer,
2379 .priv_class = &hls_class,