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 */
147 char *agroup; /* audio group name */
151 typedef struct HLSContext {
152 const AVClass *class; // Class for private options.
153 int64_t start_sequence;
154 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
156 float time; // Set by a private option.
157 float init_time; // Set by a private option.
158 int max_nb_segments; // Set by a private option.
160 int wrap; // Set by a private option.
162 uint32_t flags; // enum HLSFlags
163 uint32_t pl_type; // enum PlaylistType
164 char *segment_filename;
165 char *fmp4_init_filename;
168 int use_localtime; ///< flag to expand filename with localtime
169 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
171 int64_t recording_time;
172 int64_t max_seg_size; // every segment file max size
175 char *format_options_str;
176 char *vtt_format_options_str;
177 char *subtitle_filename;
178 AVDictionary *format_options;
188 char key_file[LINE_BUFFER_SIZE + 1];
189 char key_uri[LINE_BUFFER_SIZE + 1];
190 char key_string[KEYSIZE*2 + 1];
191 char iv_string[KEYSIZE*2 + 1];
192 AVDictionary *vtt_format_options;
197 VariantStream *var_streams;
198 unsigned int nb_varstreams;
200 int master_m3u8_created; /* status of master play-list creation */
201 char *master_m3u8_url; /* URL of the master m3u8 file */
202 int version; /* HLS version */
203 char *var_stream_map; /* user specified variant stream map string */
204 char *master_pl_name;
205 unsigned int master_publish_rate;
207 AVIOContext *m3u8_out;
208 AVIOContext *sub_m3u8_out;
211 static int mkdir_p(const char *path) {
213 char *temp = av_strdup(path);
217 if (!path || !temp) {
221 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
223 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
227 for ( ; *pos != '\0'; ++pos) {
228 if (*pos == '/' || *pos == '\\') {
231 ret = mkdir(temp, 0755);
236 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
237 ret = mkdir(temp, 0755);
244 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
245 AVDictionary **options) {
246 HLSContext *hls = s->priv_data;
247 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
248 int err = AVERROR_MUXER_NOT_FOUND;
249 if (!*pb || !http_base_proto || !hls->http_persistent) {
250 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
251 #if CONFIG_HTTP_PROTOCOL
253 URLContext *http_url_context = ffio_geturlcontext(*pb);
254 av_assert0(http_url_context);
255 err = ff_http_do_new_request(http_url_context, filename);
261 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
262 HLSContext *hls = s->priv_data;
263 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
264 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
265 ff_format_io_close(s, pb);
266 #if CONFIG_HTTP_PROTOCOL
268 URLContext *http_url_context = ffio_geturlcontext(*pb);
269 av_assert0(http_url_context);
271 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
276 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
278 int http_base_proto = ff_is_http_proto(s->filename);
281 av_dict_set(options, "method", c->method, 0);
282 } else if (http_base_proto) {
283 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
284 av_dict_set(options, "method", "PUT", 0);
287 av_dict_set(options, "user_agent", c->user_agent, 0);
288 if (c->http_persistent)
289 av_dict_set_int(options, "multiple_requests", 1, 0);
293 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
296 char *q, buf1[20], c;
297 int nd, len, addchar_count;
306 if (c == '%' && *(p+1) == '%') // %%
308 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
311 while (av_isdigit(*(p + addchar_count))) {
312 nd = nd * 10 + *(p + addchar_count) - '0';
316 if (*(p + addchar_count) == placeholder) {
317 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
318 if (len < 1) // returned error or empty buf1
320 if ((q - buf + len) > buf_size - 1)
322 memcpy(q, buf1, len);
324 p += (addchar_count + 1);
332 while (addchar_count--)
333 if ((q - buf) < buf_size - 1)
345 static void write_styp(AVIOContext *pb)
348 ffio_wfourcc(pb, "styp");
349 ffio_wfourcc(pb, "msdh");
350 avio_wb32(pb, 0); /* minor */
351 ffio_wfourcc(pb, "msdh");
352 ffio_wfourcc(pb, "msix");
355 static int flush_dynbuf(VariantStream *vs, int *range_length)
357 AVFormatContext *ctx = vs->avf;
361 return AVERROR(EINVAL);
365 av_write_frame(ctx, NULL);
369 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
371 avio_write(vs->out, buffer, *range_length);
375 return avio_open_dyn_buf(&ctx->pb);
378 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
381 HLSSegment *segment, *previous_segment = NULL;
382 float playlist_duration = 0.0f;
383 int ret = 0, path_size, sub_path_size;
384 char *dirname = NULL, *p, *sub_path;
386 AVDictionary *options = NULL;
387 AVIOContext *out = NULL;
388 const char *proto = NULL;
390 segment = vs->segments;
392 playlist_duration += segment->duration;
393 segment = segment->next;
396 segment = vs->old_segments;
398 playlist_duration -= segment->duration;
399 previous_segment = segment;
400 segment = previous_segment->next;
401 if (playlist_duration <= -previous_segment->duration) {
402 previous_segment->next = NULL;
407 if (segment && !hls->use_localtime_mkdir) {
408 if (hls->segment_filename) {
409 dirname = av_strdup(hls->segment_filename);
411 dirname = av_strdup(vs->avf->filename);
414 ret = AVERROR(ENOMEM);
417 p = (char *)av_basename(dirname);
422 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
424 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
425 path = av_malloc(path_size);
427 ret = AVERROR(ENOMEM);
431 if (hls->use_localtime_mkdir)
432 av_strlcpy(path, segment->filename, path_size);
433 else { // segment->filename contains basename only
434 av_strlcpy(path, dirname, path_size);
435 av_strlcat(path, segment->filename, path_size);
438 proto = avio_find_protocol_name(s->filename);
439 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
440 av_dict_set(&options, "method", "DELETE", 0);
441 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
443 ff_format_io_close(vs->avf, &out);
444 } else if (unlink(path) < 0) {
445 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
446 path, strerror(errno));
449 if ((segment->sub_filename[0] != '\0')) {
450 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
451 sub_path = av_malloc(sub_path_size);
453 ret = AVERROR(ENOMEM);
457 av_strlcpy(sub_path, dirname, sub_path_size);
458 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
460 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
461 av_dict_set(&options, "method", "DELETE", 0);
462 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
466 ff_format_io_close(vs->avf, &out);
467 } else if (unlink(sub_path) < 0) {
468 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
469 sub_path, strerror(errno));
474 previous_segment = segment;
475 segment = previous_segment->next;
476 av_free(previous_segment);
486 static int randomize(uint8_t *buf, int len)
489 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
492 if (RAND_bytes(buf, len))
495 return AVERROR(ENOSYS);
497 return AVERROR(EINVAL);
500 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
502 HLSContext *hls = s->priv_data;
506 uint8_t key[KEYSIZE];
508 len = strlen(s->filename) + 4 + 1;
509 hls->key_basename = av_mallocz(len);
510 if (!hls->key_basename)
511 return AVERROR(ENOMEM);
513 av_strlcpy(hls->key_basename, s->filename, len);
514 av_strlcat(hls->key_basename, ".key", len);
517 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
518 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
520 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
521 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
524 if (!*hls->iv_string) {
525 uint8_t iv[16] = { 0 };
529 AV_WB64(iv + 8, vs->sequence);
531 memcpy(iv, hls->iv, sizeof(iv));
533 ff_data_to_hex(buf, iv, sizeof(iv), 0);
535 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
538 if (!*hls->key_uri) {
539 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
540 return AVERROR(EINVAL);
543 if (!*hls->key_file) {
544 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
545 return AVERROR(EINVAL);
548 if (!*hls->key_string) {
550 if ((ret = randomize(key, sizeof(key))) < 0) {
551 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
555 memcpy(key, hls->key, sizeof(key));
558 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
559 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
561 avio_seek(pb, 0, SEEK_CUR);
562 avio_write(pb, key, KEYSIZE);
569 static int hls_encryption_start(AVFormatContext *s)
571 HLSContext *hls = s->priv_data;
574 uint8_t key[KEYSIZE];
576 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
577 av_log(hls, AV_LOG_ERROR,
578 "error opening key info file %s\n", hls->key_info_file);
582 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
583 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
585 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
586 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
588 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
589 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
591 ff_format_io_close(s, &pb);
593 if (!*hls->key_uri) {
594 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
595 return AVERROR(EINVAL);
598 if (!*hls->key_file) {
599 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
600 return AVERROR(EINVAL);
603 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
604 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
608 ret = avio_read(pb, key, sizeof(key));
609 ff_format_io_close(s, &pb);
610 if (ret != sizeof(key)) {
611 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
612 if (ret >= 0 || ret == AVERROR_EOF)
613 ret = AVERROR(EINVAL);
616 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
621 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
623 int len = ff_get_line(s, buf, maxlen);
624 while (len > 0 && av_isspace(buf[len - 1]))
629 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
631 AVDictionary *options = NULL;
632 HLSContext *hls = s->priv_data;
634 AVFormatContext *vtt_oc = NULL;
635 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
638 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
643 oc->filename[0] = '\0';
644 oc->oformat = vs->oformat;
645 oc->interrupt_callback = s->interrupt_callback;
646 oc->max_delay = s->max_delay;
647 oc->opaque = s->opaque;
648 oc->io_open = s->io_open;
649 oc->io_close = s->io_close;
650 av_dict_copy(&oc->metadata, s->metadata, 0);
652 if(vs->vtt_oformat) {
653 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
656 vtt_oc = vs->vtt_avf;
657 vtt_oc->oformat = vs->vtt_oformat;
658 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
661 for (i = 0; i < vs->nb_streams; i++) {
663 AVFormatContext *loc;
664 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
669 if (!(st = avformat_new_stream(loc, NULL)))
670 return AVERROR(ENOMEM);
671 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
672 if (!oc->oformat->codec_tag ||
673 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
674 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
675 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
677 st->codecpar->codec_tag = 0;
680 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
681 st->time_base = vs->streams[i]->time_base;
682 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
685 vs->packets_written = 1;
688 vs->fmp4_init_mode = 0;
690 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
691 if (hls->max_seg_size > 0) {
692 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
693 return AVERROR_PATCHWELCOME;
696 vs->packets_written = 0;
697 vs->init_range_length = 0;
698 vs->fmp4_init_mode = !byterange_mode;
699 set_http_options(s, &options, hls);
700 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
703 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
704 av_dict_free(&options);
706 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
710 if (hls->format_options_str) {
711 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
713 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
714 hls->format_options_str);
719 av_dict_copy(&options, hls->format_options, 0);
720 av_dict_set(&options, "fflags", "-autobsf", 0);
721 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
722 ret = avformat_init_output(oc, &options);
725 if (av_dict_count(options)) {
726 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
727 av_dict_free(&options);
728 return AVERROR(EINVAL);
731 av_dict_free(&options);
736 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
739 if (!av_strcasecmp(segment->filename,filename))
741 segment = segment->next;
743 return (HLSSegment *) NULL;
746 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
747 VariantStream *vs, HLSSegment *en,
748 double duration, int64_t pos, int64_t size)
750 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
751 strlen(vs->current_segment_final_filename_fmt)) {
752 av_strlcpy(vs->avf->filename, vs->current_segment_final_filename_fmt, sizeof(vs->avf->filename));
753 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
754 char * filename = av_strdup(vs->avf->filename); // %%s will be %s after strftime
757 return AVERROR(ENOMEM);
759 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
760 filename, 's', pos + size) < 1) {
761 av_log(hls, AV_LOG_ERROR,
762 "Invalid second level segment filename template '%s', "
763 "you can try to remove second_level_segment_size flag\n",
767 return AVERROR(EINVAL);
771 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
772 char * filename = av_strdup(vs->avf->filename); // %%t will be %t after strftime
775 return AVERROR(ENOMEM);
777 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
778 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
779 av_log(hls, AV_LOG_ERROR,
780 "Invalid second level segment filename template '%s', "
781 "you can try to remove second_level_segment_time flag\n",
785 return AVERROR(EINVAL);
793 static int sls_flag_check_duration_size_index(HLSContext *hls)
797 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
798 av_log(hls, AV_LOG_ERROR,
799 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
800 ret = AVERROR(EINVAL);
802 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
803 av_log(hls, AV_LOG_ERROR,
804 "second_level_segment_size hls_flag requires use_localtime to be true\n");
805 ret = AVERROR(EINVAL);
807 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
808 av_log(hls, AV_LOG_ERROR,
809 "second_level_segment_index hls_flag requires use_localtime to be true\n");
810 ret = AVERROR(EINVAL);
816 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
818 const char *proto = avio_find_protocol_name(vs->basename);
819 int segment_renaming_ok = proto && !strcmp(proto, "file");
822 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
823 av_log(hls, AV_LOG_ERROR,
824 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
825 ret = AVERROR(EINVAL);
827 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
828 av_log(hls, AV_LOG_ERROR,
829 "second_level_segment_size hls_flag works only with file protocol segment names\n");
830 ret = AVERROR(EINVAL);
836 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
837 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
838 strlen(vs->current_segment_final_filename_fmt)) {
839 ff_rename(old_filename, vs->avf->filename, hls);
843 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
845 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
846 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
848 return AVERROR(ENOMEM);
849 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
851 filename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
853 filename, 'd', vs->sequence) < 1) {
855 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
856 "you can try to remove second_level_segment_index flag\n",
859 return AVERROR(EINVAL);
863 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
864 av_strlcpy(vs->current_segment_final_filename_fmt, oc->filename,
865 sizeof(vs->current_segment_final_filename_fmt));
866 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
867 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
869 return AVERROR(ENOMEM);
870 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
871 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
872 "you can try to remove second_level_segment_size flag\n",
875 return AVERROR(EINVAL);
879 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
880 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
882 return AVERROR(ENOMEM);
883 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
884 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
885 "you can try to remove second_level_segment_time flag\n",
888 return AVERROR(EINVAL);
896 /* Create a new segment and append it to the segment list */
897 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
898 VariantStream *vs, double duration, int64_t pos,
901 HLSSegment *en = av_malloc(sizeof(*en));
902 const char *filename;
903 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
907 return AVERROR(ENOMEM);
909 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
914 filename = av_basename(vs->avf->filename);
916 if (hls->use_localtime_mkdir) {
917 filename = vs->avf->filename;
919 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
920 && !byterange_mode) {
921 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
923 av_strlcpy(en->filename, filename, sizeof(en->filename));
926 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->filename), sizeof(en->sub_filename));
928 en->sub_filename[0] = '\0';
930 en->duration = duration;
936 if (vs->discontinuity) {
938 vs->discontinuity = 0;
941 if (hls->key_info_file || hls->encrypt) {
942 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
943 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
949 vs->last_segment->next = en;
951 vs->last_segment = en;
953 // EVENT or VOD playlists imply sliding window cannot be used
954 if (hls->pl_type != PLAYLIST_TYPE_NONE)
955 hls->max_nb_segments = 0;
957 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
959 vs->initial_prog_date_time += en->duration;
960 vs->segments = en->next;
961 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
963 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
965 !(hls->flags & HLS_SINGLE_FILE)) {
967 en->next = vs->old_segments;
968 vs->old_segments = en;
969 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
976 if (hls->max_seg_size > 0) {
984 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
986 HLSContext *hls = s->priv_data;
988 int ret = 0, is_segment = 0;
989 int64_t new_start_pos;
994 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
995 &s->interrupt_callback, NULL,
996 s->protocol_whitelist, s->protocol_blacklist)) < 0)
999 read_chomp_line(in, line, sizeof(line));
1000 if (strcmp(line, "#EXTM3U")) {
1001 ret = AVERROR_INVALIDDATA;
1005 vs->discontinuity = 0;
1006 while (!avio_feof(in)) {
1007 read_chomp_line(in, line, sizeof(line));
1008 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1009 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1010 if (tmp_sequence < vs->sequence)
1011 av_log(hls, AV_LOG_VERBOSE,
1012 "Found playlist sequence number was smaller """
1013 "than specified start sequence number: %"PRId64" < %"PRId64", "
1014 "omitting\n", tmp_sequence, hls->start_sequence);
1016 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1017 vs->sequence = tmp_sequence;
1019 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1021 vs->discontinuity = 1;
1022 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1024 vs->duration = atof(ptr);
1025 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1026 ptr = av_stristr(line, "URI=\"");
1028 ptr += strlen("URI=\"");
1029 end = av_stristr(ptr, ",");
1031 av_strlcpy(hls->key_uri, ptr, end - ptr);
1033 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1037 ptr = av_stristr(line, "IV=0x");
1039 ptr += strlen("IV=0x");
1040 end = av_stristr(ptr, ",");
1042 av_strlcpy(hls->iv_string, ptr, end - ptr);
1044 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1048 } else if (av_strstart(line, "#", NULL)) {
1050 } else if (line[0]) {
1053 new_start_pos = avio_tell(vs->avf->pb);
1054 vs->size = new_start_pos - vs->start_pos;
1055 av_strlcpy(vs->avf->filename, line, sizeof(line));
1056 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1059 vs->start_pos = new_start_pos;
1069 static void hls_free_segments(HLSSegment *p)
1080 static void hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1082 size_t len = strlen(oc->filename);
1083 char final_filename[sizeof(oc->filename)];
1085 av_strlcpy(final_filename, oc->filename, len);
1086 final_filename[len-4] = '\0';
1087 ff_rename(oc->filename, final_filename, s);
1088 oc->filename[len-4] = '\0';
1091 static int get_relative_url(const char *master_url, const char *media_url,
1092 char *rel_url, int rel_url_buf_size)
1096 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1097 strrchr(master_url, '\\');
1099 base_len = FFABS(p - master_url);
1100 if (av_strncasecmp(master_url, media_url, base_len)) {
1101 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1102 return AVERROR(EINVAL);
1105 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1109 static int create_master_playlist(AVFormatContext *s,
1110 VariantStream * const input_vs)
1112 HLSContext *hls = s->priv_data;
1113 VariantStream *vs, *temp_vs;
1114 AVStream *vid_st, *aud_st;
1115 AVDictionary *options = NULL;
1117 int m3u8_name_size, ret, bandwidth;
1118 char *m3u8_rel_name;
1120 input_vs->m3u8_created = 1;
1121 if (!hls->master_m3u8_created) {
1122 /* For the first time, wait until all the media playlists are created */
1123 for (i = 0; i < hls->nb_varstreams; i++)
1124 if (!hls->var_streams[i].m3u8_created)
1127 /* Keep publishing the master playlist at the configured rate */
1128 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1129 input_vs->number % hls->master_publish_rate)
1133 set_http_options(s, &options, hls);
1135 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1136 av_dict_free(&options);
1138 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1139 hls->master_m3u8_url);
1143 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1145 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1146 for (i = 0; i < hls->nb_varstreams; i++) {
1147 vs = &(hls->var_streams[i]);
1149 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1152 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1153 m3u8_rel_name = av_malloc(m3u8_name_size);
1154 if (!m3u8_rel_name) {
1155 ret = AVERROR(ENOMEM);
1158 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1159 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1160 m3u8_rel_name, m3u8_name_size);
1162 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1166 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1168 av_freep(&m3u8_rel_name);
1171 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1172 for (i = 0; i < hls->nb_varstreams; i++) {
1173 vs = &(hls->var_streams[i]);
1175 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1176 m3u8_rel_name = av_malloc(m3u8_name_size);
1177 if (!m3u8_rel_name) {
1178 ret = AVERROR(ENOMEM);
1181 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1182 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1183 m3u8_rel_name, m3u8_name_size);
1185 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1191 for (j = 0; j < vs->nb_streams; j++) {
1192 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1193 vid_st = vs->streams[j];
1194 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1195 aud_st = vs->streams[j];
1198 if (!vid_st && !aud_st) {
1199 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1204 * Traverse through the list of audio only rendition streams and find
1205 * the rendition which has highest bitrate in the same audio group
1208 for (j = 0; j < hls->nb_varstreams; j++) {
1209 temp_vs = &(hls->var_streams[j]);
1210 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1212 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1214 aud_st = temp_vs->streams[0];
1215 if (temp_vs->streams[0]->codecpar->bit_rate >
1216 aud_st->codecpar->bit_rate)
1217 aud_st = temp_vs->streams[0];
1224 bandwidth += vid_st->codecpar->bit_rate;
1226 bandwidth += aud_st->codecpar->bit_rate;
1227 bandwidth += bandwidth / 10;
1229 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1230 aud_st ? vs->agroup : NULL);
1232 av_freep(&m3u8_rel_name);
1236 hls->master_m3u8_created = 1;
1237 av_freep(&m3u8_rel_name);
1238 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1242 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1244 HLSContext *hls = s->priv_data;
1246 int target_duration = 0;
1248 char temp_filename[1024];
1249 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1250 const char *proto = avio_find_protocol_name(s->filename);
1251 int use_rename = proto && !strcmp(proto, "file");
1252 static unsigned warned_non_file;
1253 char *key_uri = NULL;
1254 char *iv_string = NULL;
1255 AVDictionary *options = NULL;
1256 double prog_date_time = vs->initial_prog_date_time;
1257 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1258 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1261 if (byterange_mode) {
1266 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1270 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1274 if (!use_rename && !warned_non_file++)
1275 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1277 set_http_options(s, &options, hls);
1278 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1279 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1282 for (en = vs->segments; en; en = en->next) {
1283 if (target_duration <= en->duration)
1284 target_duration = lrint(en->duration);
1287 vs->discontinuity_set = 0;
1288 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1289 target_duration, sequence, hls->pl_type);
1291 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1292 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1293 vs->discontinuity_set = 1;
1295 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1296 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1298 for (en = vs->segments; en; en = en->next) {
1299 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1300 av_strcasecmp(en->iv_string, iv_string))) {
1301 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1303 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1304 avio_printf(hls->m3u8_out, "\n");
1305 key_uri = en->key_uri;
1306 iv_string = en->iv_string;
1309 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1310 ff_hls_write_init_file(hls->m3u8_out, vs->fmp4_init_filename,
1311 hls->flags & HLS_SINGLE_FILE, en->size, en->pos);
1314 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1315 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1316 en->size, en->pos, vs->baseurl,
1317 en->filename, prog_date_time_p);
1319 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1323 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1324 ff_hls_write_end_list(hls->m3u8_out);
1326 if( vs->vtt_m3u8_name ) {
1327 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1329 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1330 target_duration, sequence, PLAYLIST_TYPE_NONE);
1331 for (en = vs->segments; en; en = en->next) {
1332 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1333 en->duration, 0, en->size, en->pos,
1334 vs->baseurl, en->sub_filename, NULL);
1336 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1341 ff_hls_write_end_list(hls->sub_m3u8_out);
1346 av_dict_free(&options);
1347 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1348 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1349 if (ret >= 0 && use_rename)
1350 ff_rename(temp_filename, vs->m3u8_name, s);
1352 if (ret >= 0 && hls->master_pl_name)
1353 if (create_master_playlist(s, vs) < 0)
1354 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1359 static int hls_start(AVFormatContext *s, VariantStream *vs)
1361 HLSContext *c = s->priv_data;
1362 AVFormatContext *oc = vs->avf;
1363 AVFormatContext *vtt_oc = vs->vtt_avf;
1364 AVDictionary *options = NULL;
1365 char *filename, iv_string[KEYSIZE*2 + 1];
1368 if (c->flags & HLS_SINGLE_FILE) {
1369 av_strlcpy(oc->filename, vs->basename,
1370 sizeof(oc->filename));
1371 if (vs->vtt_basename)
1372 av_strlcpy(vtt_oc->filename, vs->vtt_basename,
1373 sizeof(vtt_oc->filename));
1374 } else if (c->max_seg_size > 0) {
1375 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1377 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1379 vs->basename, 'd', vs->sequence) < 1) {
1381 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1382 return AVERROR(EINVAL);
1385 if (c->use_localtime) {
1387 struct tm *tm, tmpbuf;
1389 tm = localtime_r(&now0, &tmpbuf);
1390 if (!strftime(oc->filename, sizeof(oc->filename), vs->basename, tm)) {
1391 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1392 return AVERROR(EINVAL);
1395 err = sls_flag_use_localtime_filename(oc, c, vs);
1397 return AVERROR(ENOMEM);
1400 if (c->use_localtime_mkdir) {
1402 char *fn_copy = av_strdup(oc->filename);
1404 return AVERROR(ENOMEM);
1406 dir = av_dirname(fn_copy);
1407 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1408 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1410 return AVERROR(errno);
1414 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1416 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1418 vs->basename, 'd', vs->sequence) < 1) {
1420 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1421 return AVERROR(EINVAL);
1423 if( vs->vtt_basename) {
1424 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
1426 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1428 vs->vtt_basename, 'd', vs->sequence) < 1) {
1430 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1431 return AVERROR(EINVAL);
1437 set_http_options(s, &options, c);
1439 if (c->flags & HLS_TEMP_FILE) {
1440 av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
1443 if (c->key_info_file || c->encrypt) {
1444 if (c->key_info_file && c->encrypt) {
1445 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1446 " will use -hls_key_info_file priority\n");
1449 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1450 if (c->key_info_file) {
1451 if ((err = hls_encryption_start(s)) < 0)
1454 if ((err = do_encrypt(s, vs)) < 0)
1457 c->encrypt_started = 1;
1459 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1462 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1464 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1465 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1468 filename = av_asprintf("crypto:%s", oc->filename);
1470 err = AVERROR(ENOMEM);
1473 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1475 av_dict_free(&options);
1478 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1479 if ((err = hlsenc_io_open(s, &oc->pb, oc->filename, &options)) < 0)
1482 if (vs->vtt_basename) {
1483 set_http_options(s, &options, c);
1484 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->filename, &options)) < 0)
1487 av_dict_free(&options);
1489 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1490 /* We only require one PAT/PMT per segment. */
1491 if (oc->oformat->priv_class && oc->priv_data) {
1494 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1496 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1497 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1498 av_opt_set(oc->priv_data, "pat_period", period, 0);
1502 if (vs->vtt_basename) {
1503 err = avformat_write_header(vtt_oc,NULL);
1510 av_dict_free(&options);
1515 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1518 time_t t = time(NULL);
1519 struct tm *p, tmbuf;
1520 HLSContext *hls = s->priv_data;
1522 p = localtime_r(&t, &tmbuf);
1523 // no %s support when strftime returned error or left format string unchanged
1524 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1525 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1526 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1528 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1531 static int append_postfix(char *name, int name_buf_len, int i)
1534 char extension[10] = {'\0'};
1536 p = strrchr(name, '.');
1538 av_strlcpy(extension, p, sizeof(extension));
1542 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1544 if (strlen(extension))
1545 av_strlcat(name, extension, name_buf_len);
1550 static int validate_name(int nb_vs, const char *fn)
1552 const char *filename, *subdir_name;
1553 char *fn_dup = NULL;
1557 ret = AVERROR(EINVAL);
1561 fn_dup = av_strdup(fn);
1563 ret = AVERROR(ENOMEM);
1567 filename = av_basename(fn);
1568 subdir_name = av_dirname(fn_dup);
1570 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1571 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1573 ret = AVERROR(EINVAL);
1577 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1578 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1580 ret = AVERROR(EINVAL);
1589 static int format_name(char *buf, int buf_len, int index)
1591 const char *proto, *dir;
1592 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1595 if (!av_stristr(buf, "%v"))
1598 orig_buf_dup = av_strdup(buf);
1599 if (!orig_buf_dup) {
1600 ret = AVERROR(ENOMEM);
1604 if (replace_int_data_in_filename(buf, buf_len, orig_buf_dup, 'v', index) < 1) {
1605 ret = AVERROR(EINVAL);
1609 proto = avio_find_protocol_name(orig_buf_dup);
1610 dir = av_dirname(orig_buf_dup);
1612 /* if %v is present in the file's directory, create sub-directory */
1613 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1614 mod_buf_dup = av_strdup(buf);
1616 ret = AVERROR(ENOMEM);
1620 dir = av_dirname(mod_buf_dup);
1621 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1622 ret = AVERROR(errno);
1628 av_freep(&orig_buf_dup);
1629 av_freep(&mod_buf_dup);
1633 static int get_nth_codec_stream_index(AVFormatContext *s,
1634 enum AVMediaType codec_type,
1637 unsigned int stream_index, cnt;
1638 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1641 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1642 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1644 if (cnt == stream_id)
1645 return stream_index;
1651 static int parse_variant_stream_mapstring(AVFormatContext *s)
1653 HLSContext *hls = s->priv_data;
1656 enum AVMediaType codec_type;
1657 int nb_varstreams, nb_streams;
1658 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1662 * Expected format for var_stream_map string is as below:
1664 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1665 * This string specifies how to group the audio, video and subtitle streams
1666 * into different variant streams. The variant stream groups are separated
1669 * a:, v:, s: are keys to specify audio, video and subtitle streams
1670 * respectively. Allowed values are 0 to 9 digits (limited just based on
1673 * agroup: is key to specify audio group. A string can be given as value.
1675 p = av_strdup(hls->var_stream_map);
1677 while(av_strtok(q, " \t", &saveptr1)) {
1679 hls->nb_varstreams++;
1683 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1684 if (!hls->var_streams)
1685 return AVERROR(ENOMEM);
1687 p = hls->var_stream_map;
1689 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1692 if (nb_varstreams < hls->nb_varstreams)
1693 vs = &(hls->var_streams[nb_varstreams++]);
1695 return AVERROR(EINVAL);
1698 while (q < varstr + strlen(varstr)) {
1699 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1700 !av_strncasecmp(q, "s:", 2))
1704 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1706 return AVERROR(ENOMEM);
1709 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1712 if (av_strstart(keyval, "agroup:", &val)) {
1713 vs->agroup = av_strdup(val);
1715 return AVERROR(ENOMEM);
1717 } else if (av_strstart(keyval, "v:", &val)) {
1718 codec_type = AVMEDIA_TYPE_VIDEO;
1719 } else if (av_strstart(keyval, "a:", &val)) {
1720 codec_type = AVMEDIA_TYPE_AUDIO;
1721 } else if (av_strstart(keyval, "s:", &val)) {
1722 codec_type = AVMEDIA_TYPE_SUBTITLE;
1724 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1725 return AVERROR(EINVAL);
1729 if (av_isdigit(*val))
1730 stream_index = get_nth_codec_stream_index (s, codec_type,
1733 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1734 vs->streams[nb_streams++] = s->streams[stream_index];
1736 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1737 return AVERROR(EINVAL);
1741 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1742 hls->nb_varstreams);
1747 static int update_variant_stream_info(AVFormatContext *s) {
1748 HLSContext *hls = s->priv_data;
1751 if (hls->var_stream_map) {
1752 return parse_variant_stream_mapstring(s);
1754 //By default, a single variant stream with all the codec streams is created
1755 hls->nb_varstreams = 1;
1756 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1757 hls->nb_varstreams);
1758 if (!hls->var_streams)
1759 return AVERROR(ENOMEM);
1761 hls->var_streams[0].nb_streams = s->nb_streams;
1762 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1763 hls->var_streams[0].nb_streams);
1764 if (!hls->var_streams[0].streams)
1765 return AVERROR(ENOMEM);
1767 for (i = 0; i < s->nb_streams; i++)
1768 hls->var_streams[0].streams[i] = s->streams[i];
1773 static int update_master_pl_info(AVFormatContext *s) {
1774 HLSContext *hls = s->priv_data;
1776 char *fn1= NULL, *fn2 = NULL;
1779 fn1 = av_strdup(s->filename);
1781 ret = AVERROR(ENOMEM);
1785 dir = av_dirname(fn1);
1788 * if output file's directory has %v, variants are created in sub-directories
1789 * then master is created at the sub-directories level
1791 if (dir && av_stristr(av_basename(dir), "%v")) {
1792 fn2 = av_strdup(dir);
1794 ret = AVERROR(ENOMEM);
1797 dir = av_dirname(fn2);
1800 if (dir && strcmp(dir, "."))
1801 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
1803 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
1805 if (!hls->master_m3u8_url) {
1806 ret = AVERROR(ENOMEM);
1817 static int hls_write_header(AVFormatContext *s)
1819 HLSContext *hls = s->priv_data;
1821 AVDictionary *options = NULL;
1822 VariantStream *vs = NULL;
1824 for (i = 0; i < hls->nb_varstreams; i++) {
1825 vs = &hls->var_streams[i];
1827 av_dict_copy(&options, hls->format_options, 0);
1828 ret = avformat_write_header(vs->avf, &options);
1829 if (av_dict_count(options)) {
1830 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1831 ret = AVERROR(EINVAL);
1832 av_dict_free(&options);
1835 av_dict_free(&options);
1836 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1837 for (j = 0; j < vs->nb_streams; j++) {
1839 AVStream *outer_st = vs->streams[j];
1841 if (hls->max_seg_size > 0) {
1842 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1843 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1844 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1845 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1846 outer_st->codecpar->bit_rate, hls->max_seg_size);
1850 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1851 inner_st = vs->avf->streams[j];
1852 else if (vs->vtt_avf)
1853 inner_st = vs->vtt_avf->streams[0];
1855 /* We have a subtitle stream, when the user does not want one */
1859 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1867 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1869 HLSContext *hls = s->priv_data;
1870 AVFormatContext *oc = NULL;
1871 AVStream *st = s->streams[pkt->stream_index];
1872 int64_t end_pts = 0;
1874 int ret = 0, can_split = 1, i, j;
1875 int stream_index = 0;
1876 int range_length = 0;
1877 uint8_t *buffer = NULL;
1878 VariantStream *vs = NULL;
1880 for (i = 0; i < hls->nb_varstreams; i++) {
1881 vs = &hls->var_streams[i];
1882 for (j = 0; j < vs->nb_streams; j++) {
1883 if (vs->streams[j] == st) {
1884 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1900 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
1901 return AVERROR(ENOMEM);
1904 end_pts = hls->recording_time * vs->number;
1906 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
1907 /* reset end_pts, hls->recording_time at end of the init hls list */
1908 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
1909 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
1910 hls->recording_time = hls->time * AV_TIME_BASE;
1911 end_pts = init_list_dur + after_init_list_dur ;
1914 if (vs->start_pts == AV_NOPTS_VALUE) {
1915 vs->start_pts = pkt->pts;
1918 if (vs->has_video) {
1919 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1920 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1921 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1923 if (pkt->pts == AV_NOPTS_VALUE)
1924 is_ref_pkt = can_split = 0;
1927 if (vs->end_pts == AV_NOPTS_VALUE)
1928 vs->end_pts = pkt->pts;
1929 if (vs->new_start) {
1931 vs->duration = (double)(pkt->pts - vs->end_pts)
1932 * st->time_base.num / st->time_base.den;
1933 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1935 if (pkt->duration) {
1936 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1938 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
1939 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
1945 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
1946 end_pts, AV_TIME_BASE_Q) >= 0) {
1947 int64_t new_start_pos;
1948 char *old_filename = av_strdup(vs->avf->filename);
1949 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1951 if (!old_filename) {
1952 return AVERROR(ENOMEM);
1955 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
1957 new_start_pos = avio_tell(vs->avf->pb);
1958 vs->size = new_start_pos - vs->start_pos;
1960 if (!byterange_mode) {
1961 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1962 if (!vs->init_range_length) {
1964 range_length = avio_close_dyn_buf(oc->pb, &buffer);
1965 avio_write(vs->out, buffer, range_length);
1966 vs->init_range_length = range_length;
1967 avio_open_dyn_buf(&oc->pb);
1968 vs->packets_written = 0;
1969 ff_format_io_close(s, &vs->out);
1970 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
1973 hlsenc_io_close(s, &oc->pb, oc->filename);
1976 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->filename);
1979 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
1980 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
1981 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
1982 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1983 hls_rename_temp_file(s, oc);
1986 if (vs->fmp4_init_mode) {
1990 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1991 ret = hlsenc_io_open(s, &vs->out, vs->avf->filename, NULL);
1993 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n",
1995 av_free(old_filename);
1998 write_styp(vs->out);
1999 ret = flush_dynbuf(vs, &range_length);
2001 av_free(old_filename);
2004 ff_format_io_close(s, &vs->out);
2006 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2007 vs->start_pos = new_start_pos;
2009 av_free(old_filename);
2013 vs->end_pts = pkt->pts;
2016 vs->fmp4_init_mode = 0;
2017 if (hls->flags & HLS_SINGLE_FILE) {
2019 } else if (hls->max_seg_size > 0) {
2020 if (vs->start_pos >= hls->max_seg_size) {
2022 sls_flag_file_rename(hls, vs, old_filename);
2023 ret = hls_start(s, vs);
2025 /* When split segment by byte, the duration is short than hls_time,
2026 * so it is not enough one segment duration as hls_time, */
2031 sls_flag_file_rename(hls, vs, old_filename);
2032 ret = hls_start(s, vs);
2034 av_free(old_filename);
2040 if (!vs->fmp4_init_mode || byterange_mode)
2041 if ((ret = hls_window(s, 0, vs)) < 0) {
2046 vs->packets_written++;
2047 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2052 static int hls_write_trailer(struct AVFormatContext *s)
2054 HLSContext *hls = s->priv_data;
2055 AVFormatContext *oc = NULL;
2056 AVFormatContext *vtt_oc = NULL;
2057 char *old_filename = NULL;
2060 VariantStream *vs = NULL;
2062 for (i = 0; i < hls->nb_varstreams; i++) {
2063 vs = &hls->var_streams[i];
2066 vtt_oc = vs->vtt_avf;
2067 old_filename = av_strdup(vs->avf->filename);
2069 if (!old_filename) {
2070 return AVERROR(ENOMEM);
2072 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2073 int range_length = 0;
2074 ret = hlsenc_io_open(s, &vs->out, vs->avf->filename, NULL);
2076 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->filename);
2079 write_styp(vs->out);
2080 ret = flush_dynbuf(vs, &range_length);
2084 ff_format_io_close(s, &vs->out);
2088 av_write_trailer(oc);
2090 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2091 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2092 ff_format_io_close(s, &oc->pb);
2094 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
2095 hls_rename_temp_file(s, oc);
2098 /* after av_write_trailer, then duration + 1 duration per packet */
2099 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2102 sls_flag_file_rename(hls, vs, old_filename);
2106 av_write_trailer(vtt_oc);
2107 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2108 ff_format_io_close(s, &vtt_oc->pb);
2110 av_freep(&vs->basename);
2111 av_freep(&vs->base_output_dirname);
2112 avformat_free_context(oc);
2115 hls_window(s, 1, vs);
2117 av_freep(&vs->fmp4_init_filename);
2119 av_freep(&vs->vtt_basename);
2120 av_freep(&vs->vtt_m3u8_name);
2121 avformat_free_context(vtt_oc);
2124 hls_free_segments(vs->segments);
2125 hls_free_segments(vs->old_segments);
2126 av_free(old_filename);
2127 av_freep(&vs->m3u8_name);
2128 av_freep(&vs->streams);
2129 av_freep(&vs->agroup);
2130 av_freep(&vs->baseurl);
2133 ff_format_io_close(s, &hls->m3u8_out);
2134 ff_format_io_close(s, &hls->sub_m3u8_out);
2135 av_freep(&hls->key_basename);
2136 av_freep(&hls->var_streams);
2137 av_freep(&hls->master_m3u8_url);
2142 static int hls_init(AVFormatContext *s)
2147 HLSContext *hls = s->priv_data;
2148 const char *pattern = "%d.ts";
2149 VariantStream *vs = NULL;
2150 int basename_size = 0;
2151 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2152 const char *vtt_pattern = "%d.vtt";
2154 int vtt_basename_size = 0;
2155 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2157 ret = update_variant_stream_info(s);
2159 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2163 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2164 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2165 ret = AVERROR(EINVAL);
2166 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2170 ret = validate_name(hls->nb_varstreams, s->filename);
2174 if (hls->segment_filename) {
2175 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2180 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2181 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2186 if (hls->subtitle_filename) {
2187 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2192 if (hls->master_pl_name) {
2193 ret = update_master_pl_info(s);
2195 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2201 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2204 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2205 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2206 time_t t = time(NULL); // we will need it in either case
2207 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2208 hls->start_sequence = (int64_t)t;
2209 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2211 struct tm *p, tmbuf;
2212 if (!(p = localtime_r(&t, &tmbuf)))
2213 return AVERROR(ENOMEM);
2214 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2215 return AVERROR(ENOMEM);
2216 hls->start_sequence = strtoll(b, NULL, 10);
2218 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2221 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2222 for (i = 0; i < hls->nb_varstreams; i++) {
2223 vs = &hls->var_streams[i];
2225 vs->m3u8_name = av_strdup(s->filename);
2226 if (!vs->m3u8_name ) {
2227 ret = AVERROR(ENOMEM);
2230 ret = format_name(vs->m3u8_name, strlen(s->filename) + 1, i);
2234 vs->sequence = hls->start_sequence;
2235 vs->start_pts = AV_NOPTS_VALUE;
2236 vs->end_pts = AV_NOPTS_VALUE;
2237 vs->current_segment_final_filename_fmt[0] = '\0';
2239 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2240 // Independent segments cannot be guaranteed when splitting by time
2241 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2242 av_log(s, AV_LOG_WARNING,
2243 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2244 "Disabling 'independent_segments' flag\n");
2247 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2250 vs->initial_prog_date_time = now0;
2252 if (hls->format_options_str) {
2253 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2255 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2260 for (j = 0; j < vs->nb_streams; j++) {
2261 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2262 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2265 if (vs->has_video > 1)
2266 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2267 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2268 vs->oformat = av_guess_format("mp4", NULL, NULL);
2270 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2274 ret = AVERROR_MUXER_NOT_FOUND;
2278 if (vs->has_subtitle) {
2279 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2281 ret = AVERROR_MUXER_NOT_FOUND;
2285 if (hls->segment_filename) {
2286 basename_size = strlen(hls->segment_filename) + 1;
2287 vs->basename = av_malloc(basename_size);
2288 if (!vs->basename) {
2289 ret = AVERROR(ENOMEM);
2293 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2294 ret = format_name(vs->basename, basename_size, i);
2298 if (hls->flags & HLS_SINGLE_FILE) {
2299 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2306 if (hls->use_localtime) {
2307 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2309 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2312 vs->basename = av_malloc(basename_size);
2313 if (!vs->basename) {
2314 ret = AVERROR(ENOMEM);
2318 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2320 p = strrchr(vs->basename, '.');
2323 if (hls->use_localtime) {
2324 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2326 av_strlcat(vs->basename, pattern, basename_size);
2330 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2331 if (hls->nb_varstreams > 1)
2332 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2333 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2334 if (!vs->fmp4_init_filename ) {
2335 ret = AVERROR(ENOMEM);
2338 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2339 fmp4_init_filename_len);
2341 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2342 ret = format_name(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2346 fmp4_init_filename_len = strlen(vs->fmp4_init_filename) + 1;
2347 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2348 if (!vs->base_output_dirname) {
2349 ret = AVERROR(ENOMEM);
2352 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2353 fmp4_init_filename_len);
2355 if (hls->nb_varstreams > 1) {
2356 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2361 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2362 strlen(vs->fmp4_init_filename) + 1;
2364 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2365 if (!vs->base_output_dirname) {
2366 ret = AVERROR(ENOMEM);
2370 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2371 fmp4_init_filename_len);
2372 p = strrchr(vs->base_output_dirname, '/');
2375 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2376 fmp4_init_filename_len);
2378 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2379 fmp4_init_filename_len);
2384 if (!hls->use_localtime) {
2385 ret = sls_flag_check_duration_size_index(hls);
2390 ret = sls_flag_check_duration_size(hls, vs);
2395 if (vs->has_subtitle) {
2397 if (hls->flags & HLS_SINGLE_FILE)
2398 vtt_pattern = ".vtt";
2399 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2401 vs->vtt_basename = av_malloc(vtt_basename_size);
2402 if (!vs->vtt_basename) {
2403 ret = AVERROR(ENOMEM);
2406 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2407 if (!vs->vtt_m3u8_name ) {
2408 ret = AVERROR(ENOMEM);
2411 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2412 p = strrchr(vs->vtt_basename, '.');
2416 if ( hls->subtitle_filename ) {
2417 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2418 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2422 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2423 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2425 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2429 vs->baseurl = av_strdup(hls->baseurl);
2431 ret = AVERROR(ENOMEM);
2436 if ((hls->flags & HLS_SINGLE_FILE) && (hls->segment_type == SEGMENT_TYPE_FMP4)) {
2437 vs->fmp4_init_filename = av_strdup(vs->basename);
2438 if (!vs->fmp4_init_filename) {
2439 ret = AVERROR(ENOMEM);
2443 if ((ret = hls_mux_init(s, vs)) < 0)
2446 if (hls->flags & HLS_APPEND_LIST) {
2447 parse_playlist(s, vs->m3u8_name, vs);
2448 vs->discontinuity = 1;
2449 if (hls->init_time > 0) {
2450 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2451 " hls_init_time value will have no effect\n");
2453 hls->recording_time = hls->time * AV_TIME_BASE;
2457 if ((ret = hls_start(s, vs)) < 0)
2463 av_freep(&hls->key_basename);
2464 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2465 vs = &hls->var_streams[i];
2466 av_freep(&vs->basename);
2467 av_freep(&vs->vtt_basename);
2468 av_freep(&vs->fmp4_init_filename);
2469 av_freep(&vs->m3u8_name);
2470 av_freep(&vs->vtt_m3u8_name);
2471 av_freep(&vs->streams);
2472 av_freep(&vs->agroup);
2473 av_freep(&vs->baseurl);
2475 avformat_free_context(vs->avf);
2477 avformat_free_context(vs->vtt_avf);
2479 av_freep(&hls->var_streams);
2480 av_freep(&hls->master_m3u8_url);
2486 #define OFFSET(x) offsetof(HLSContext, x)
2487 #define E AV_OPT_FLAG_ENCODING_PARAM
2488 static const AVOption options[] = {
2489 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2490 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2491 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2492 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2493 {"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},
2494 {"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},
2496 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2498 {"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},
2499 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2500 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2501 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2502 {"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},
2503 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2504 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2505 {"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},
2506 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2507 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2508 {"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"},
2509 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2510 {"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"},
2511 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2512 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2513 {"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"},
2514 {"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"},
2515 {"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"},
2516 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2517 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2518 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2519 {"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"},
2520 {"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"},
2521 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2522 {"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"},
2523 {"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"},
2524 {"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"},
2525 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2526 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2527 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2528 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2529 {"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" },
2530 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2531 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2532 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2533 {"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" },
2534 {"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" },
2535 {"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" },
2536 {"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" },
2537 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2538 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2539 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2540 {"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},
2541 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2545 static const AVClass hls_class = {
2546 .class_name = "hls muxer",
2547 .item_name = av_default_item_name,
2549 .version = LIBAVUTIL_VERSION_INT,
2553 AVOutputFormat ff_hls_muxer = {
2555 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2556 .extensions = "m3u8",
2557 .priv_data_size = sizeof(HLSContext),
2558 .audio_codec = AV_CODEC_ID_AAC,
2559 .video_codec = AV_CODEC_ID_H264,
2560 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2561 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2563 .write_header = hls_write_header,
2564 .write_packet = hls_write_packet,
2565 .write_trailer = hls_write_trailer,
2566 .priv_class = &hls_class,