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 CODEC_ATTRIBUTE_WRITTEN = 0,
63 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
64 } CodecAttributeStatus;
67 #define LINE_BUFFER_SIZE 1024
68 #define HLS_MICROSECOND_UNIT 1000000
69 #define POSTFIX_PATTERN "_%d"
71 typedef struct HLSSegment {
73 char sub_filename[1024];
74 double duration; /* in seconds */
79 char key_uri[LINE_BUFFER_SIZE + 1];
80 char iv_string[KEYSIZE*2 + 1];
82 struct HLSSegment *next;
85 typedef enum HLSFlags {
86 // Generate a single media file and use byte ranges in the playlist.
87 HLS_SINGLE_FILE = (1 << 0),
88 HLS_DELETE_SEGMENTS = (1 << 1),
89 HLS_ROUND_DURATIONS = (1 << 2),
90 HLS_DISCONT_START = (1 << 3),
91 HLS_OMIT_ENDLIST = (1 << 4),
92 HLS_SPLIT_BY_TIME = (1 << 5),
93 HLS_APPEND_LIST = (1 << 6),
94 HLS_PROGRAM_DATE_TIME = (1 << 7),
95 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
96 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
97 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
98 HLS_TEMP_FILE = (1 << 11),
99 HLS_PERIODIC_REKEY = (1 << 12),
100 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
108 typedef struct VariantStream {
111 AVOutputFormat *oformat;
112 AVOutputFormat *vtt_oformat;
115 int init_range_length;
117 AVFormatContext *avf;
118 AVFormatContext *vtt_avf;
123 double dpp; // duration per packet
126 double duration; // last segment duration computed so far, in seconds
127 int64_t start_pos; // last segment starting position
128 int64_t size; // last segment size
130 int discontinuity_set;
132 int reference_stream_index;
134 HLSSegment *segments;
135 HLSSegment *last_segment;
136 HLSSegment *old_segments;
143 double initial_prog_date_time;
144 char current_segment_final_filename_fmt[1024]; // when renaming segments
146 char *fmp4_init_filename;
147 char *base_output_dirname;
151 char codec_attr[128];
152 CodecAttributeStatus attr_status;
153 unsigned int nb_streams;
154 int m3u8_created; /* status of media play-list creation */
155 char *agroup; /* audio group name */
156 char *ccgroup; /* closed caption group name */
160 typedef struct ClosedCaptionsStream {
161 char *ccgroup; /* closed caption group name */
162 char *instreamid; /* closed captions INSTREAM-ID */
163 char *language; /* closed captions langauge */
164 } ClosedCaptionsStream;
166 typedef struct HLSContext {
167 const AVClass *class; // Class for private options.
168 int64_t start_sequence;
169 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
171 float time; // Set by a private option.
172 float init_time; // Set by a private option.
173 int max_nb_segments; // Set by a private option.
175 int wrap; // Set by a private option.
177 uint32_t flags; // enum HLSFlags
178 uint32_t pl_type; // enum PlaylistType
179 char *segment_filename;
180 char *fmp4_init_filename;
183 int use_localtime; ///< flag to expand filename with localtime
184 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
186 int64_t recording_time;
187 int64_t max_seg_size; // every segment file max size
190 char *format_options_str;
191 char *vtt_format_options_str;
192 char *subtitle_filename;
193 AVDictionary *format_options;
203 char key_file[LINE_BUFFER_SIZE + 1];
204 char key_uri[LINE_BUFFER_SIZE + 1];
205 char key_string[KEYSIZE*2 + 1];
206 char iv_string[KEYSIZE*2 + 1];
207 AVDictionary *vtt_format_options;
212 VariantStream *var_streams;
213 unsigned int nb_varstreams;
214 ClosedCaptionsStream *cc_streams;
215 unsigned int nb_ccstreams;
217 int master_m3u8_created; /* status of master play-list creation */
218 char *master_m3u8_url; /* URL of the master m3u8 file */
219 int version; /* HLS version */
220 char *var_stream_map; /* user specified variant stream map string */
221 char *cc_stream_map; /* user specified closed caption streams map string */
222 char *master_pl_name;
223 unsigned int master_publish_rate;
225 AVIOContext *m3u8_out;
226 AVIOContext *sub_m3u8_out;
230 static int mkdir_p(const char *path) {
232 char *temp = av_strdup(path);
236 if (!path || !temp) {
240 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
242 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
246 for ( ; *pos != '\0'; ++pos) {
247 if (*pos == '/' || *pos == '\\') {
250 ret = mkdir(temp, 0755);
255 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
256 ret = mkdir(temp, 0755);
263 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
264 AVDictionary **options) {
265 HLSContext *hls = s->priv_data;
266 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
267 int err = AVERROR_MUXER_NOT_FOUND;
268 if (!*pb || !http_base_proto || !hls->http_persistent) {
269 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
270 #if CONFIG_HTTP_PROTOCOL
272 URLContext *http_url_context = ffio_geturlcontext(*pb);
273 av_assert0(http_url_context);
274 err = ff_http_do_new_request(http_url_context, filename);
280 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
281 HLSContext *hls = s->priv_data;
282 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
283 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
284 ff_format_io_close(s, pb);
285 #if CONFIG_HTTP_PROTOCOL
287 URLContext *http_url_context = ffio_geturlcontext(*pb);
288 av_assert0(http_url_context);
290 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
295 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
297 int http_base_proto = ff_is_http_proto(s->url);
300 av_dict_set(options, "method", c->method, 0);
301 } else if (http_base_proto) {
302 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
303 av_dict_set(options, "method", "PUT", 0);
306 av_dict_set(options, "user_agent", c->user_agent, 0);
307 if (c->http_persistent)
308 av_dict_set_int(options, "multiple_requests", 1, 0);
310 av_dict_set_int(options, "timeout", c->timeout, 0);
313 static void write_codec_attr(AVStream *st, VariantStream *vs) {
314 int codec_strlen = strlen(vs->codec_attr);
317 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
319 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
322 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
323 uint8_t *data = st->codecpar->extradata;
324 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
325 snprintf(attr, sizeof(attr),
326 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
330 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
331 snprintf(attr, sizeof(attr), "mp4a.40.33");
332 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
333 snprintf(attr, sizeof(attr), "mp4a.40.34");
334 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
335 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
336 snprintf(attr, sizeof(attr), "mp4a.40.2");
337 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
338 snprintf(attr, sizeof(attr), "ac-3");
339 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
340 snprintf(attr, sizeof(attr), "ec-3");
344 // Don't write the same attribute multiple times
345 if (!av_stristr(vs->codec_attr, attr)) {
346 snprintf(vs->codec_attr + codec_strlen,
347 sizeof(vs->codec_attr) - codec_strlen,
348 "%s%s", codec_strlen ? "," : "", attr);
353 vs->codec_attr[0] = '\0';
354 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
358 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
363 int nd, addchar_count;
367 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
374 if (c == '%' && *(p+1) == '%') // %%
376 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
379 while (av_isdigit(*(p + addchar_count))) {
380 nd = nd * 10 + *(p + addchar_count) - '0';
384 if (*(p + addchar_count) == placeholder) {
385 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
386 p += (addchar_count + 1);
394 av_bprint_append_data(&buf, p, addchar_count);
397 if (!av_bprint_is_complete(&buf)) {
398 av_bprint_finalize(&buf, NULL);
401 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
407 static void write_styp(AVIOContext *pb)
410 ffio_wfourcc(pb, "styp");
411 ffio_wfourcc(pb, "msdh");
412 avio_wb32(pb, 0); /* minor */
413 ffio_wfourcc(pb, "msdh");
414 ffio_wfourcc(pb, "msix");
417 static int flush_dynbuf(VariantStream *vs, int *range_length)
419 AVFormatContext *ctx = vs->avf;
423 return AVERROR(EINVAL);
427 av_write_frame(ctx, NULL);
431 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
433 avio_write(vs->out, buffer, *range_length);
437 return avio_open_dyn_buf(&ctx->pb);
440 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
443 HLSSegment *segment, *previous_segment = NULL;
444 float playlist_duration = 0.0f;
445 int ret = 0, path_size, sub_path_size;
446 char *dirname = NULL, *p, *sub_path;
448 AVDictionary *options = NULL;
449 AVIOContext *out = NULL;
450 const char *proto = NULL;
452 segment = vs->segments;
454 playlist_duration += segment->duration;
455 segment = segment->next;
458 segment = vs->old_segments;
460 playlist_duration -= segment->duration;
461 previous_segment = segment;
462 segment = previous_segment->next;
463 if (playlist_duration <= -previous_segment->duration) {
464 previous_segment->next = NULL;
469 if (segment && !hls->use_localtime_mkdir) {
470 if (hls->segment_filename) {
471 dirname = av_strdup(hls->segment_filename);
473 dirname = av_strdup(vs->avf->url);
476 ret = AVERROR(ENOMEM);
479 p = (char *)av_basename(dirname);
484 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
486 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
487 path = av_malloc(path_size);
489 ret = AVERROR(ENOMEM);
493 if (hls->use_localtime_mkdir)
494 av_strlcpy(path, segment->filename, path_size);
495 else { // segment->filename contains basename only
496 av_strlcpy(path, dirname, path_size);
497 av_strlcat(path, segment->filename, path_size);
500 proto = avio_find_protocol_name(s->url);
501 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
502 av_dict_set(&options, "method", "DELETE", 0);
503 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
505 ff_format_io_close(vs->avf, &out);
506 } else if (unlink(path) < 0) {
507 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
508 path, strerror(errno));
511 if ((segment->sub_filename[0] != '\0')) {
512 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
513 sub_path = av_malloc(sub_path_size);
515 ret = AVERROR(ENOMEM);
519 av_strlcpy(sub_path, dirname, sub_path_size);
520 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
522 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
523 av_dict_set(&options, "method", "DELETE", 0);
524 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
528 ff_format_io_close(vs->avf, &out);
529 } else if (unlink(sub_path) < 0) {
530 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
531 sub_path, strerror(errno));
536 previous_segment = segment;
537 segment = previous_segment->next;
538 av_free(previous_segment);
548 static int randomize(uint8_t *buf, int len)
551 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
554 if (RAND_bytes(buf, len))
557 return AVERROR(ENOSYS);
559 return AVERROR(EINVAL);
562 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
564 HLSContext *hls = s->priv_data;
568 uint8_t key[KEYSIZE];
570 len = strlen(s->url) + 4 + 1;
571 hls->key_basename = av_mallocz(len);
572 if (!hls->key_basename)
573 return AVERROR(ENOMEM);
575 av_strlcpy(hls->key_basename, s->url, len);
576 av_strlcat(hls->key_basename, ".key", len);
579 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
580 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
582 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
583 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
586 if (!*hls->iv_string) {
587 uint8_t iv[16] = { 0 };
591 AV_WB64(iv + 8, vs->sequence);
593 memcpy(iv, hls->iv, sizeof(iv));
595 ff_data_to_hex(buf, iv, sizeof(iv), 0);
597 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
600 if (!*hls->key_uri) {
601 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
602 return AVERROR(EINVAL);
605 if (!*hls->key_file) {
606 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
607 return AVERROR(EINVAL);
610 if (!*hls->key_string) {
612 if ((ret = randomize(key, sizeof(key))) < 0) {
613 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
617 memcpy(key, hls->key, sizeof(key));
620 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
621 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
623 avio_seek(pb, 0, SEEK_CUR);
624 avio_write(pb, key, KEYSIZE);
631 static int hls_encryption_start(AVFormatContext *s)
633 HLSContext *hls = s->priv_data;
636 uint8_t key[KEYSIZE];
638 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
639 av_log(hls, AV_LOG_ERROR,
640 "error opening key info file %s\n", hls->key_info_file);
644 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
645 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
647 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
648 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
650 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
651 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
653 ff_format_io_close(s, &pb);
655 if (!*hls->key_uri) {
656 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
657 return AVERROR(EINVAL);
660 if (!*hls->key_file) {
661 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
662 return AVERROR(EINVAL);
665 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
666 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
670 ret = avio_read(pb, key, sizeof(key));
671 ff_format_io_close(s, &pb);
672 if (ret != sizeof(key)) {
673 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
674 if (ret >= 0 || ret == AVERROR_EOF)
675 ret = AVERROR(EINVAL);
678 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
683 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
685 int len = ff_get_line(s, buf, maxlen);
686 while (len > 0 && av_isspace(buf[len - 1]))
691 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
693 AVDictionary *options = NULL;
694 HLSContext *hls = s->priv_data;
696 AVFormatContext *vtt_oc = NULL;
697 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
700 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
705 oc->url = av_strdup("");
707 return AVERROR(ENOMEM);
709 oc->oformat = vs->oformat;
710 oc->interrupt_callback = s->interrupt_callback;
711 oc->max_delay = s->max_delay;
712 oc->opaque = s->opaque;
713 oc->io_open = s->io_open;
714 oc->io_close = s->io_close;
715 av_dict_copy(&oc->metadata, s->metadata, 0);
717 if(vs->vtt_oformat) {
718 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
721 vtt_oc = vs->vtt_avf;
722 vtt_oc->oformat = vs->vtt_oformat;
723 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
726 for (i = 0; i < vs->nb_streams; i++) {
728 AVFormatContext *loc;
729 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
734 if (!(st = avformat_new_stream(loc, NULL)))
735 return AVERROR(ENOMEM);
736 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
737 if (!oc->oformat->codec_tag ||
738 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
739 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
740 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
742 st->codecpar->codec_tag = 0;
745 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
746 st->time_base = vs->streams[i]->time_base;
747 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
750 vs->packets_written = 1;
753 vs->fmp4_init_mode = 0;
755 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
756 if (hls->max_seg_size > 0) {
757 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
758 return AVERROR_PATCHWELCOME;
761 vs->packets_written = 0;
762 vs->init_range_length = 0;
763 vs->fmp4_init_mode = !byterange_mode;
764 set_http_options(s, &options, hls);
765 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
768 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
769 av_dict_free(&options);
771 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
775 if (hls->format_options_str) {
776 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
778 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
779 hls->format_options_str);
784 av_dict_copy(&options, hls->format_options, 0);
785 av_dict_set(&options, "fflags", "-autobsf", 0);
786 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
787 ret = avformat_init_output(oc, &options);
790 if (av_dict_count(options)) {
791 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
792 av_dict_free(&options);
793 return AVERROR(EINVAL);
796 av_dict_free(&options);
801 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
804 if (!av_strcasecmp(segment->filename,filename))
806 segment = segment->next;
808 return (HLSSegment *) NULL;
811 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
812 VariantStream *vs, HLSSegment *en,
813 double duration, int64_t pos, int64_t size)
815 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
816 strlen(vs->current_segment_final_filename_fmt)) {
817 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
820 return AVERROR(ENOMEM);
822 ff_format_set_url(vs->avf, new_url);
823 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
824 char *filename = NULL;
825 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
826 av_log(hls, AV_LOG_ERROR,
827 "Invalid second level segment filename template '%s', "
828 "you can try to remove second_level_segment_size flag\n",
832 return AVERROR(EINVAL);
834 ff_format_set_url(vs->avf, filename);
836 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
837 char *filename = NULL;
838 if (replace_int_data_in_filename(&filename, vs->avf->url,
839 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
840 av_log(hls, AV_LOG_ERROR,
841 "Invalid second level segment filename template '%s', "
842 "you can try to remove second_level_segment_time flag\n",
846 return AVERROR(EINVAL);
848 ff_format_set_url(vs->avf, filename);
854 static int sls_flag_check_duration_size_index(HLSContext *hls)
858 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
859 av_log(hls, AV_LOG_ERROR,
860 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
861 ret = AVERROR(EINVAL);
863 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
864 av_log(hls, AV_LOG_ERROR,
865 "second_level_segment_size hls_flag requires use_localtime to be true\n");
866 ret = AVERROR(EINVAL);
868 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
869 av_log(hls, AV_LOG_ERROR,
870 "second_level_segment_index hls_flag requires use_localtime to be true\n");
871 ret = AVERROR(EINVAL);
877 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
879 const char *proto = avio_find_protocol_name(vs->basename);
880 int segment_renaming_ok = proto && !strcmp(proto, "file");
883 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
884 av_log(hls, AV_LOG_ERROR,
885 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
886 ret = AVERROR(EINVAL);
888 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
889 av_log(hls, AV_LOG_ERROR,
890 "second_level_segment_size hls_flag works only with file protocol segment names\n");
891 ret = AVERROR(EINVAL);
897 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
898 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
899 strlen(vs->current_segment_final_filename_fmt)) {
900 ff_rename(old_filename, vs->avf->url, hls);
904 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
906 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
907 char *filename = NULL;
908 if (replace_int_data_in_filename(&filename,
910 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
912 oc->url, 'd', vs->sequence) < 1) {
914 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
915 "you can try to remove second_level_segment_index flag\n",
918 return AVERROR(EINVAL);
920 ff_format_set_url(oc, filename);
922 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
923 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
924 sizeof(vs->current_segment_final_filename_fmt));
925 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
926 char *filename = NULL;
927 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
928 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
929 "you can try to remove second_level_segment_size flag\n",
932 return AVERROR(EINVAL);
934 ff_format_set_url(oc, filename);
936 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
937 char *filename = NULL;
938 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
939 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
940 "you can try to remove second_level_segment_time flag\n",
943 return AVERROR(EINVAL);
945 ff_format_set_url(oc, filename);
951 /* Create a new segment and append it to the segment list */
952 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
953 VariantStream *vs, double duration, int64_t pos,
956 HLSSegment *en = av_malloc(sizeof(*en));
957 const char *filename;
958 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
962 return AVERROR(ENOMEM);
964 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
969 filename = av_basename(vs->avf->url);
971 if (hls->use_localtime_mkdir) {
972 filename = vs->avf->url;
974 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
975 && !byterange_mode) {
976 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
978 av_strlcpy(en->filename, filename, sizeof(en->filename));
981 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
983 en->sub_filename[0] = '\0';
985 en->duration = duration;
991 if (vs->discontinuity) {
993 vs->discontinuity = 0;
996 if (hls->key_info_file || hls->encrypt) {
997 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
998 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1004 vs->last_segment->next = en;
1006 vs->last_segment = en;
1008 // EVENT or VOD playlists imply sliding window cannot be used
1009 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1010 hls->max_nb_segments = 0;
1012 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1014 vs->initial_prog_date_time += en->duration;
1015 vs->segments = en->next;
1016 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1018 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1020 !(hls->flags & HLS_SINGLE_FILE)) {
1022 en->next = vs->old_segments;
1023 vs->old_segments = en;
1024 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1031 if (hls->max_seg_size > 0) {
1039 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1041 HLSContext *hls = s->priv_data;
1043 int ret = 0, is_segment = 0;
1044 int64_t new_start_pos;
1049 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1050 &s->interrupt_callback, NULL,
1051 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1054 read_chomp_line(in, line, sizeof(line));
1055 if (strcmp(line, "#EXTM3U")) {
1056 ret = AVERROR_INVALIDDATA;
1060 vs->discontinuity = 0;
1061 while (!avio_feof(in)) {
1062 read_chomp_line(in, line, sizeof(line));
1063 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1064 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1065 if (tmp_sequence < vs->sequence)
1066 av_log(hls, AV_LOG_VERBOSE,
1067 "Found playlist sequence number was smaller """
1068 "than specified start sequence number: %"PRId64" < %"PRId64", "
1069 "omitting\n", tmp_sequence, hls->start_sequence);
1071 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1072 vs->sequence = tmp_sequence;
1074 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1076 vs->discontinuity = 1;
1077 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1079 vs->duration = atof(ptr);
1080 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1081 ptr = av_stristr(line, "URI=\"");
1083 ptr += strlen("URI=\"");
1084 end = av_stristr(ptr, ",");
1086 av_strlcpy(hls->key_uri, ptr, end - ptr);
1088 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1092 ptr = av_stristr(line, "IV=0x");
1094 ptr += strlen("IV=0x");
1095 end = av_stristr(ptr, ",");
1097 av_strlcpy(hls->iv_string, ptr, end - ptr);
1099 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1103 } else if (av_strstart(line, "#", NULL)) {
1105 } else if (line[0]) {
1107 char *new_file = av_strdup(line);
1109 ret = AVERROR(ENOMEM);
1112 ff_format_set_url(vs->avf, new_file);
1114 new_start_pos = avio_tell(vs->avf->pb);
1115 vs->size = new_start_pos - vs->start_pos;
1116 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1119 vs->start_pos = new_start_pos;
1129 static void hls_free_segments(HLSSegment *p)
1140 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1142 size_t len = strlen(oc->url);
1143 char *final_filename = av_strdup(oc->url);
1146 if (!final_filename)
1147 return AVERROR(ENOMEM);
1148 final_filename[len-4] = '\0';
1149 ret = ff_rename(oc->url, final_filename, s);
1150 oc->url[len-4] = '\0';
1151 av_freep(&final_filename);
1155 static int get_relative_url(const char *master_url, const char *media_url,
1156 char *rel_url, int rel_url_buf_size)
1160 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1161 strrchr(master_url, '\\');
1163 base_len = FFABS(p - master_url);
1164 if (av_strncasecmp(master_url, media_url, base_len)) {
1165 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1166 return AVERROR(EINVAL);
1169 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1173 static int create_master_playlist(AVFormatContext *s,
1174 VariantStream * const input_vs)
1176 HLSContext *hls = s->priv_data;
1177 VariantStream *vs, *temp_vs;
1178 AVStream *vid_st, *aud_st;
1179 AVDictionary *options = NULL;
1181 int m3u8_name_size, ret, bandwidth;
1182 char *m3u8_rel_name, *ccgroup;
1183 ClosedCaptionsStream *ccs;
1185 input_vs->m3u8_created = 1;
1186 if (!hls->master_m3u8_created) {
1187 /* For the first time, wait until all the media playlists are created */
1188 for (i = 0; i < hls->nb_varstreams; i++)
1189 if (!hls->var_streams[i].m3u8_created)
1192 /* Keep publishing the master playlist at the configured rate */
1193 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1194 input_vs->number % hls->master_publish_rate)
1198 set_http_options(s, &options, hls);
1200 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1201 av_dict_free(&options);
1203 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1204 hls->master_m3u8_url);
1208 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1210 for (i = 0; i < hls->nb_ccstreams; i++) {
1211 ccs = &(hls->cc_streams[i]);
1212 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1213 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1214 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1216 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1217 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1220 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1221 for (i = 0; i < hls->nb_varstreams; i++) {
1222 vs = &(hls->var_streams[i]);
1224 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1227 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1228 m3u8_rel_name = av_malloc(m3u8_name_size);
1229 if (!m3u8_rel_name) {
1230 ret = AVERROR(ENOMEM);
1233 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1234 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1235 m3u8_rel_name, m3u8_name_size);
1237 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1241 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1243 av_freep(&m3u8_rel_name);
1246 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1247 for (i = 0; i < hls->nb_varstreams; i++) {
1248 vs = &(hls->var_streams[i]);
1250 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1251 m3u8_rel_name = av_malloc(m3u8_name_size);
1252 if (!m3u8_rel_name) {
1253 ret = AVERROR(ENOMEM);
1256 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1257 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1258 m3u8_rel_name, m3u8_name_size);
1260 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1266 for (j = 0; j < vs->nb_streams; j++) {
1267 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1268 vid_st = vs->streams[j];
1269 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1270 aud_st = vs->streams[j];
1273 if (!vid_st && !aud_st) {
1274 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1279 * Traverse through the list of audio only rendition streams and find
1280 * the rendition which has highest bitrate in the same audio group
1283 for (j = 0; j < hls->nb_varstreams; j++) {
1284 temp_vs = &(hls->var_streams[j]);
1285 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1287 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1289 aud_st = temp_vs->streams[0];
1290 if (temp_vs->streams[0]->codecpar->bit_rate >
1291 aud_st->codecpar->bit_rate)
1292 aud_st = temp_vs->streams[0];
1299 bandwidth += vid_st->codecpar->bit_rate;
1301 bandwidth += aud_st->codecpar->bit_rate;
1302 bandwidth += bandwidth / 10;
1305 if (vid_st && vs->ccgroup) {
1306 /* check if this group name is available in the cc map string */
1307 for (j = 0; j < hls->nb_ccstreams; j++) {
1308 ccs = &(hls->cc_streams[j]);
1309 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1310 ccgroup = vs->ccgroup;
1314 if (j == hls->nb_ccstreams)
1315 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1319 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1320 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1322 av_freep(&m3u8_rel_name);
1326 hls->master_m3u8_created = 1;
1327 av_freep(&m3u8_rel_name);
1328 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1332 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1334 HLSContext *hls = s->priv_data;
1336 int target_duration = 0;
1338 char temp_filename[1024];
1339 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1340 const char *proto = avio_find_protocol_name(s->url);
1341 int use_rename = proto && !strcmp(proto, "file");
1342 static unsigned warned_non_file;
1343 char *key_uri = NULL;
1344 char *iv_string = NULL;
1345 AVDictionary *options = NULL;
1346 double prog_date_time = vs->initial_prog_date_time;
1347 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1348 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1351 if (byterange_mode) {
1356 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1360 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1364 if (!use_rename && !warned_non_file++)
1365 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1367 set_http_options(s, &options, hls);
1368 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1369 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1372 for (en = vs->segments; en; en = en->next) {
1373 if (target_duration <= en->duration)
1374 target_duration = lrint(en->duration);
1377 vs->discontinuity_set = 0;
1378 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1379 target_duration, sequence, hls->pl_type);
1381 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1382 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1383 vs->discontinuity_set = 1;
1385 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1386 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1388 for (en = vs->segments; en; en = en->next) {
1389 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1390 av_strcasecmp(en->iv_string, iv_string))) {
1391 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1393 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1394 avio_printf(hls->m3u8_out, "\n");
1395 key_uri = en->key_uri;
1396 iv_string = en->iv_string;
1399 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1400 ff_hls_write_init_file(hls->m3u8_out, vs->fmp4_init_filename,
1401 hls->flags & HLS_SINGLE_FILE, en->size, en->pos);
1404 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1405 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1406 en->size, en->pos, vs->baseurl,
1407 en->filename, prog_date_time_p);
1409 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1413 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1414 ff_hls_write_end_list(hls->m3u8_out);
1416 if( vs->vtt_m3u8_name ) {
1417 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1419 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1420 target_duration, sequence, PLAYLIST_TYPE_NONE);
1421 for (en = vs->segments; en; en = en->next) {
1422 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1423 en->duration, 0, en->size, en->pos,
1424 vs->baseurl, en->sub_filename, NULL);
1426 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1431 ff_hls_write_end_list(hls->sub_m3u8_out);
1436 av_dict_free(&options);
1437 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1438 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1439 if (ret >= 0 && use_rename)
1440 ff_rename(temp_filename, vs->m3u8_name, s);
1442 if (ret >= 0 && hls->master_pl_name)
1443 if (create_master_playlist(s, vs) < 0)
1444 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1449 static int hls_start(AVFormatContext *s, VariantStream *vs)
1451 HLSContext *c = s->priv_data;
1452 AVFormatContext *oc = vs->avf;
1453 AVFormatContext *vtt_oc = vs->vtt_avf;
1454 AVDictionary *options = NULL;
1455 char *filename, iv_string[KEYSIZE*2 + 1];
1458 if (c->flags & HLS_SINGLE_FILE) {
1459 char *new_name = av_strdup(vs->basename);
1461 return AVERROR(ENOMEM);
1462 ff_format_set_url(oc, new_name);
1463 if (vs->vtt_basename) {
1464 new_name = av_strdup(vs->vtt_basename);
1466 return AVERROR(ENOMEM);
1467 ff_format_set_url(vtt_oc, new_name);
1469 } else if (c->max_seg_size > 0) {
1470 char *filename = NULL;
1471 if (replace_int_data_in_filename(&filename,
1473 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1475 vs->basename, 'd', vs->sequence) < 1) {
1478 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1479 return AVERROR(EINVAL);
1481 ff_format_set_url(oc, filename);
1483 if (c->use_localtime) {
1485 struct tm *tm, tmpbuf;
1486 int bufsize = strlen(vs->basename) + 1024;
1487 char *buf = av_mallocz(bufsize);
1489 return AVERROR(ENOMEM);
1491 tm = localtime_r(&now0, &tmpbuf);
1492 ff_format_set_url(oc, buf);
1493 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1494 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1495 return AVERROR(EINVAL);
1498 err = sls_flag_use_localtime_filename(oc, c, vs);
1500 return AVERROR(ENOMEM);
1503 if (c->use_localtime_mkdir) {
1505 char *fn_copy = av_strdup(oc->url);
1507 return AVERROR(ENOMEM);
1509 dir = av_dirname(fn_copy);
1510 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1511 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1513 return AVERROR(errno);
1518 char *filename = NULL;
1519 if (replace_int_data_in_filename(&filename,
1521 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1523 vs->basename, 'd', vs->sequence) < 1) {
1526 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1527 return AVERROR(EINVAL);
1529 ff_format_set_url(oc, filename);
1531 if( vs->vtt_basename) {
1532 char *filename = NULL;
1533 if (replace_int_data_in_filename(&filename,
1535 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1537 vs->vtt_basename, 'd', vs->sequence) < 1) {
1540 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1541 return AVERROR(EINVAL);
1543 ff_format_set_url(vtt_oc, filename);
1548 set_http_options(s, &options, c);
1550 if (c->flags & HLS_TEMP_FILE) {
1551 char *new_name = av_asprintf("%s.tmp", oc->url);
1553 return AVERROR(ENOMEM);
1554 ff_format_set_url(oc, new_name);
1557 if (c->key_info_file || c->encrypt) {
1558 if (c->key_info_file && c->encrypt) {
1559 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1560 " will use -hls_key_info_file priority\n");
1563 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1564 if (c->key_info_file) {
1565 if ((err = hls_encryption_start(s)) < 0)
1568 if ((err = do_encrypt(s, vs)) < 0)
1571 c->encrypt_started = 1;
1573 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1576 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1578 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1579 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1582 filename = av_asprintf("crypto:%s", oc->url);
1584 err = AVERROR(ENOMEM);
1587 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1589 av_dict_free(&options);
1592 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1593 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0)
1596 if (vs->vtt_basename) {
1597 set_http_options(s, &options, c);
1598 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0)
1601 av_dict_free(&options);
1603 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1604 /* We only require one PAT/PMT per segment. */
1605 if (oc->oformat->priv_class && oc->priv_data) {
1608 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1610 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1611 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1612 av_opt_set(oc->priv_data, "pat_period", period, 0);
1616 if (vs->vtt_basename) {
1617 err = avformat_write_header(vtt_oc,NULL);
1624 av_dict_free(&options);
1629 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1632 time_t t = time(NULL);
1633 struct tm *p, tmbuf;
1634 HLSContext *hls = s->priv_data;
1636 p = localtime_r(&t, &tmbuf);
1637 // no %s support when strftime returned error or left format string unchanged
1638 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1639 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1640 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1642 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1645 static int append_postfix(char *name, int name_buf_len, int i)
1648 char extension[10] = {'\0'};
1650 p = strrchr(name, '.');
1652 av_strlcpy(extension, p, sizeof(extension));
1656 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1658 if (strlen(extension))
1659 av_strlcat(name, extension, name_buf_len);
1664 static int validate_name(int nb_vs, const char *fn)
1666 const char *filename, *subdir_name;
1667 char *fn_dup = NULL;
1671 ret = AVERROR(EINVAL);
1675 fn_dup = av_strdup(fn);
1677 ret = AVERROR(ENOMEM);
1681 filename = av_basename(fn);
1682 subdir_name = av_dirname(fn_dup);
1684 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1685 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1687 ret = AVERROR(EINVAL);
1691 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1692 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1694 ret = AVERROR(EINVAL);
1703 static int format_name(char *buf, int buf_len, int index)
1705 const char *proto, *dir;
1706 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1709 if (!av_stristr(buf, "%v"))
1712 orig_buf_dup = av_strdup(buf);
1713 if (!orig_buf_dup) {
1714 ret = AVERROR(ENOMEM);
1718 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1719 ret = AVERROR(EINVAL);
1722 av_strlcpy(buf, mod_buf, buf_len);
1724 proto = avio_find_protocol_name(orig_buf_dup);
1725 dir = av_dirname(orig_buf_dup);
1727 /* if %v is present in the file's directory, create sub-directory */
1728 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1729 mod_buf_dup = av_strdup(buf);
1731 ret = AVERROR(ENOMEM);
1735 dir = av_dirname(mod_buf_dup);
1736 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1737 ret = AVERROR(errno);
1743 av_freep(&orig_buf_dup);
1744 av_freep(&mod_buf_dup);
1749 static int get_nth_codec_stream_index(AVFormatContext *s,
1750 enum AVMediaType codec_type,
1753 unsigned int stream_index, cnt;
1754 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1757 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1758 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1760 if (cnt == stream_id)
1761 return stream_index;
1767 static int parse_variant_stream_mapstring(AVFormatContext *s)
1769 HLSContext *hls = s->priv_data;
1772 enum AVMediaType codec_type;
1773 int nb_varstreams, nb_streams;
1774 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1778 * Expected format for var_stream_map string is as below:
1780 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1781 * This string specifies how to group the audio, video and subtitle streams
1782 * into different variant streams. The variant stream groups are separated
1785 * a:, v:, s: are keys to specify audio, video and subtitle streams
1786 * respectively. Allowed values are 0 to 9 digits (limited just based on
1789 * agroup: is key to specify audio group. A string can be given as value.
1791 p = av_strdup(hls->var_stream_map);
1793 while(av_strtok(q, " \t", &saveptr1)) {
1795 hls->nb_varstreams++;
1799 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1800 if (!hls->var_streams)
1801 return AVERROR(ENOMEM);
1803 p = hls->var_stream_map;
1805 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1808 if (nb_varstreams < hls->nb_varstreams)
1809 vs = &(hls->var_streams[nb_varstreams++]);
1811 return AVERROR(EINVAL);
1814 while (q < varstr + strlen(varstr)) {
1815 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1816 !av_strncasecmp(q, "s:", 2))
1820 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1822 return AVERROR(ENOMEM);
1825 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1828 if (av_strstart(keyval, "agroup:", &val)) {
1829 vs->agroup = av_strdup(val);
1831 return AVERROR(ENOMEM);
1833 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1834 vs->ccgroup = av_strdup(val);
1836 return AVERROR(ENOMEM);
1838 } else if (av_strstart(keyval, "v:", &val)) {
1839 codec_type = AVMEDIA_TYPE_VIDEO;
1840 } else if (av_strstart(keyval, "a:", &val)) {
1841 codec_type = AVMEDIA_TYPE_AUDIO;
1842 } else if (av_strstart(keyval, "s:", &val)) {
1843 codec_type = AVMEDIA_TYPE_SUBTITLE;
1845 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1846 return AVERROR(EINVAL);
1850 if (av_isdigit(*val))
1851 stream_index = get_nth_codec_stream_index (s, codec_type,
1854 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1855 vs->streams[nb_streams++] = s->streams[stream_index];
1857 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1858 return AVERROR(EINVAL);
1862 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1863 hls->nb_varstreams);
1868 static int parse_cc_stream_mapstring(AVFormatContext *s)
1870 HLSContext *hls = s->priv_data;
1872 char *p, *q, *saveptr1, *saveptr2, *ccstr, *keyval;
1874 ClosedCaptionsStream *ccs;
1876 p = av_strdup(hls->cc_stream_map);
1878 while(av_strtok(q, " \t", &saveptr1)) {
1880 hls->nb_ccstreams++;
1884 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1885 if (!hls->cc_streams)
1886 return AVERROR(ENOMEM);
1888 p = hls->cc_stream_map;
1890 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1893 if (nb_ccstreams < hls->nb_ccstreams)
1894 ccs = &(hls->cc_streams[nb_ccstreams++]);
1896 return AVERROR(EINVAL);
1898 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1901 if (av_strstart(keyval, "ccgroup:", &val)) {
1902 ccs->ccgroup = av_strdup(val);
1904 return AVERROR(ENOMEM);
1905 } else if (av_strstart(keyval, "instreamid:", &val)) {
1906 ccs->instreamid = av_strdup(val);
1907 if (!ccs->instreamid)
1908 return AVERROR(ENOMEM);
1909 } else if (av_strstart(keyval, "language:", &val)) {
1910 ccs->language = av_strdup(val);
1912 return AVERROR(ENOMEM);
1914 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1915 return AVERROR(EINVAL);
1919 if (!ccs->ccgroup || !ccs->instreamid) {
1920 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1921 return AVERROR(EINVAL);
1924 if (av_strstart(ccs->instreamid, "CC", &val)) {
1925 if(atoi(val) < 1 || atoi(val) > 4) {
1926 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1927 atoi(val), ccs->instreamid);
1928 return AVERROR(EINVAL);
1930 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1931 if(atoi(val) < 1 || atoi(val) > 63) {
1932 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1933 atoi(val), ccs->instreamid);
1934 return AVERROR(EINVAL);
1937 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1939 return AVERROR(EINVAL);
1946 static int update_variant_stream_info(AVFormatContext *s) {
1947 HLSContext *hls = s->priv_data;
1951 if (hls->cc_stream_map) {
1952 ret = parse_cc_stream_mapstring(s);
1957 if (hls->var_stream_map) {
1958 return parse_variant_stream_mapstring(s);
1960 //By default, a single variant stream with all the codec streams is created
1961 hls->nb_varstreams = 1;
1962 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1963 hls->nb_varstreams);
1964 if (!hls->var_streams)
1965 return AVERROR(ENOMEM);
1967 hls->var_streams[0].nb_streams = s->nb_streams;
1968 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1969 hls->var_streams[0].nb_streams);
1970 if (!hls->var_streams[0].streams)
1971 return AVERROR(ENOMEM);
1973 //by default, the first available ccgroup is mapped to the variant stream
1974 if (hls->nb_ccstreams) {
1975 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
1976 if (!hls->var_streams[0].ccgroup)
1977 return AVERROR(ENOMEM);
1980 for (i = 0; i < s->nb_streams; i++)
1981 hls->var_streams[0].streams[i] = s->streams[i];
1986 static int update_master_pl_info(AVFormatContext *s) {
1987 HLSContext *hls = s->priv_data;
1989 char *fn1= NULL, *fn2 = NULL;
1992 fn1 = av_strdup(s->url);
1994 ret = AVERROR(ENOMEM);
1998 dir = av_dirname(fn1);
2001 * if output file's directory has %v, variants are created in sub-directories
2002 * then master is created at the sub-directories level
2004 if (dir && av_stristr(av_basename(dir), "%v")) {
2005 fn2 = av_strdup(dir);
2007 ret = AVERROR(ENOMEM);
2010 dir = av_dirname(fn2);
2013 if (dir && strcmp(dir, "."))
2014 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2016 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2018 if (!hls->master_m3u8_url) {
2019 ret = AVERROR(ENOMEM);
2030 static int hls_write_header(AVFormatContext *s)
2032 HLSContext *hls = s->priv_data;
2034 AVDictionary *options = NULL;
2035 VariantStream *vs = NULL;
2037 for (i = 0; i < hls->nb_varstreams; i++) {
2038 vs = &hls->var_streams[i];
2040 av_dict_copy(&options, hls->format_options, 0);
2041 ret = avformat_write_header(vs->avf, &options);
2042 if (av_dict_count(options)) {
2043 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2044 ret = AVERROR(EINVAL);
2045 av_dict_free(&options);
2048 av_dict_free(&options);
2049 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2050 for (j = 0; j < vs->nb_streams; j++) {
2052 AVStream *outer_st = vs->streams[j];
2054 if (hls->max_seg_size > 0) {
2055 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2056 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2057 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2058 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2059 outer_st->codecpar->bit_rate, hls->max_seg_size);
2063 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2064 inner_st = vs->avf->streams[j];
2065 else if (vs->vtt_avf)
2066 inner_st = vs->vtt_avf->streams[0];
2068 /* We have a subtitle stream, when the user does not want one */
2072 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2073 write_codec_attr(outer_st, vs);
2076 /* Update the Codec Attr string for the mapped audio groups */
2077 if (vs->has_video && vs->agroup) {
2078 for (j = 0; j < hls->nb_varstreams; j++) {
2079 VariantStream *vs_agroup = &(hls->var_streams[j]);
2080 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2081 vs_agroup->agroup &&
2082 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2083 write_codec_attr(vs_agroup->streams[0], vs);
2093 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2095 HLSContext *hls = s->priv_data;
2096 AVFormatContext *oc = NULL;
2097 AVStream *st = s->streams[pkt->stream_index];
2098 int64_t end_pts = 0;
2100 int ret = 0, can_split = 1, i, j;
2101 int stream_index = 0;
2102 int range_length = 0;
2103 uint8_t *buffer = NULL;
2104 VariantStream *vs = NULL;
2106 for (i = 0; i < hls->nb_varstreams; i++) {
2107 vs = &hls->var_streams[i];
2108 for (j = 0; j < vs->nb_streams; j++) {
2109 if (vs->streams[j] == st) {
2110 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2126 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2127 return AVERROR(ENOMEM);
2130 end_pts = hls->recording_time * vs->number;
2132 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2133 /* reset end_pts, hls->recording_time at end of the init hls list */
2134 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2135 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
2136 hls->recording_time = hls->time * AV_TIME_BASE;
2137 end_pts = init_list_dur + after_init_list_dur ;
2140 if (vs->start_pts == AV_NOPTS_VALUE) {
2141 vs->start_pts = pkt->pts;
2144 if (vs->has_video) {
2145 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2146 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2147 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2149 if (pkt->pts == AV_NOPTS_VALUE)
2150 is_ref_pkt = can_split = 0;
2153 if (vs->end_pts == AV_NOPTS_VALUE)
2154 vs->end_pts = pkt->pts;
2155 if (vs->new_start) {
2157 vs->duration = (double)(pkt->pts - vs->end_pts)
2158 * st->time_base.num / st->time_base.den;
2159 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2161 if (pkt->duration) {
2162 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2164 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2165 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2171 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2172 end_pts, AV_TIME_BASE_Q) >= 0) {
2173 int64_t new_start_pos;
2174 char *old_filename = NULL;
2175 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2177 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2179 new_start_pos = avio_tell(vs->avf->pb);
2180 vs->size = new_start_pos - vs->start_pos;
2182 if (!byterange_mode) {
2183 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2184 if (!vs->init_range_length) {
2186 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2187 avio_write(vs->out, buffer, range_length);
2188 vs->init_range_length = range_length;
2189 avio_open_dyn_buf(&oc->pb);
2190 vs->packets_written = 0;
2191 ff_format_io_close(s, &vs->out);
2192 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2195 hlsenc_io_close(s, &oc->pb, oc->url);
2198 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2201 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2202 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2203 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2204 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2205 hls_rename_temp_file(s, oc);
2208 if (vs->fmp4_init_mode) {
2212 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2213 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2215 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n",
2219 write_styp(vs->out);
2220 ret = flush_dynbuf(vs, &range_length);
2224 ff_format_io_close(s, &vs->out);
2227 old_filename = av_strdup(vs->avf->url);
2228 if (!old_filename) {
2229 return AVERROR(ENOMEM);
2232 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2233 vs->start_pos = new_start_pos;
2235 av_free(old_filename);
2239 vs->end_pts = pkt->pts;
2242 vs->fmp4_init_mode = 0;
2243 if (hls->flags & HLS_SINGLE_FILE) {
2245 } else if (hls->max_seg_size > 0) {
2246 if (vs->start_pos >= hls->max_seg_size) {
2248 sls_flag_file_rename(hls, vs, old_filename);
2249 ret = hls_start(s, vs);
2251 /* When split segment by byte, the duration is short than hls_time,
2252 * so it is not enough one segment duration as hls_time, */
2257 sls_flag_file_rename(hls, vs, old_filename);
2258 ret = hls_start(s, vs);
2260 av_free(old_filename);
2266 if (!vs->fmp4_init_mode || byterange_mode)
2267 if ((ret = hls_window(s, 0, vs)) < 0) {
2272 vs->packets_written++;
2273 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2278 static int hls_write_trailer(struct AVFormatContext *s)
2280 HLSContext *hls = s->priv_data;
2281 AVFormatContext *oc = NULL;
2282 AVFormatContext *vtt_oc = NULL;
2283 char *old_filename = NULL;
2286 VariantStream *vs = NULL;
2288 for (i = 0; i < hls->nb_varstreams; i++) {
2289 vs = &hls->var_streams[i];
2292 vtt_oc = vs->vtt_avf;
2293 old_filename = av_strdup(vs->avf->url);
2295 if (!old_filename) {
2296 return AVERROR(ENOMEM);
2298 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2299 int range_length = 0;
2300 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2302 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2305 write_styp(vs->out);
2306 ret = flush_dynbuf(vs, &range_length);
2310 ff_format_io_close(s, &vs->out);
2314 av_write_trailer(oc);
2316 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2317 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2318 ff_format_io_close(s, &oc->pb);
2320 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2321 hls_rename_temp_file(s, oc);
2322 av_free(old_filename);
2323 old_filename = av_strdup(vs->avf->url);
2325 if (!old_filename) {
2326 return AVERROR(ENOMEM);
2330 /* after av_write_trailer, then duration + 1 duration per packet */
2331 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2334 sls_flag_file_rename(hls, vs, old_filename);
2338 av_write_trailer(vtt_oc);
2339 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2340 ff_format_io_close(s, &vtt_oc->pb);
2342 av_freep(&vs->basename);
2343 av_freep(&vs->base_output_dirname);
2344 avformat_free_context(oc);
2347 hls_window(s, 1, vs);
2349 av_freep(&vs->fmp4_init_filename);
2351 av_freep(&vs->vtt_basename);
2352 av_freep(&vs->vtt_m3u8_name);
2353 avformat_free_context(vtt_oc);
2356 hls_free_segments(vs->segments);
2357 hls_free_segments(vs->old_segments);
2358 av_free(old_filename);
2359 av_freep(&vs->m3u8_name);
2360 av_freep(&vs->streams);
2361 av_freep(&vs->agroup);
2362 av_freep(&vs->ccgroup);
2363 av_freep(&vs->baseurl);
2366 for (i = 0; i < hls->nb_ccstreams; i++) {
2367 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2368 av_freep(&ccs->ccgroup);
2369 av_freep(&ccs->instreamid);
2370 av_freep(&ccs->language);
2373 ff_format_io_close(s, &hls->m3u8_out);
2374 ff_format_io_close(s, &hls->sub_m3u8_out);
2375 av_freep(&hls->key_basename);
2376 av_freep(&hls->var_streams);
2377 av_freep(&hls->cc_streams);
2378 av_freep(&hls->master_m3u8_url);
2383 static int hls_init(AVFormatContext *s)
2388 HLSContext *hls = s->priv_data;
2389 const char *pattern = "%d.ts";
2390 VariantStream *vs = NULL;
2391 int basename_size = 0;
2392 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2393 const char *vtt_pattern = "%d.vtt";
2395 int vtt_basename_size = 0;
2396 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2398 ret = update_variant_stream_info(s);
2400 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2404 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2405 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2406 ret = AVERROR(EINVAL);
2407 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2411 ret = validate_name(hls->nb_varstreams, s->url);
2415 if (hls->segment_filename) {
2416 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2421 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2422 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2427 if (hls->subtitle_filename) {
2428 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2433 if (hls->master_pl_name) {
2434 ret = update_master_pl_info(s);
2436 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2442 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2445 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2446 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2447 time_t t = time(NULL); // we will need it in either case
2448 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2449 hls->start_sequence = (int64_t)t;
2450 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2452 struct tm *p, tmbuf;
2453 if (!(p = localtime_r(&t, &tmbuf)))
2454 return AVERROR(ENOMEM);
2455 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2456 return AVERROR(ENOMEM);
2457 hls->start_sequence = strtoll(b, NULL, 10);
2459 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2462 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2463 for (i = 0; i < hls->nb_varstreams; i++) {
2464 vs = &hls->var_streams[i];
2466 vs->m3u8_name = av_strdup(s->url);
2467 if (!vs->m3u8_name ) {
2468 ret = AVERROR(ENOMEM);
2471 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2475 vs->sequence = hls->start_sequence;
2476 vs->start_pts = AV_NOPTS_VALUE;
2477 vs->end_pts = AV_NOPTS_VALUE;
2478 vs->current_segment_final_filename_fmt[0] = '\0';
2480 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2481 // Independent segments cannot be guaranteed when splitting by time
2482 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2483 av_log(s, AV_LOG_WARNING,
2484 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2485 "Disabling 'independent_segments' flag\n");
2488 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2491 vs->initial_prog_date_time = now0;
2493 if (hls->format_options_str) {
2494 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2496 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2501 for (j = 0; j < vs->nb_streams; j++) {
2502 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2503 /* Get one video stream to reference for split segments
2504 * so use the first video stream index. */
2505 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2506 vs->reference_stream_index = vs->streams[j]->index;
2508 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2511 if (vs->has_video > 1)
2512 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2513 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2514 vs->oformat = av_guess_format("mp4", NULL, NULL);
2516 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2520 ret = AVERROR_MUXER_NOT_FOUND;
2524 if (vs->has_subtitle) {
2525 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2527 ret = AVERROR_MUXER_NOT_FOUND;
2531 if (hls->segment_filename) {
2532 basename_size = strlen(hls->segment_filename) + 1;
2533 vs->basename = av_malloc(basename_size);
2534 if (!vs->basename) {
2535 ret = AVERROR(ENOMEM);
2539 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2540 ret = format_name(vs->basename, basename_size, i);
2544 if (hls->flags & HLS_SINGLE_FILE) {
2545 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2552 if (hls->use_localtime) {
2553 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2555 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2558 vs->basename = av_malloc(basename_size);
2559 if (!vs->basename) {
2560 ret = AVERROR(ENOMEM);
2564 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2566 p = strrchr(vs->basename, '.');
2569 if (hls->use_localtime) {
2570 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2572 av_strlcat(vs->basename, pattern, basename_size);
2576 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2577 if (hls->nb_varstreams > 1)
2578 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2579 if (hls->flags & HLS_SINGLE_FILE) {
2580 vs->fmp4_init_filename = av_strdup(vs->basename);
2581 if (!vs->fmp4_init_filename) {
2582 ret = AVERROR(ENOMEM);
2586 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2587 if (!vs->fmp4_init_filename ) {
2588 ret = AVERROR(ENOMEM);
2591 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2592 fmp4_init_filename_len);
2593 if (hls->nb_varstreams > 1) {
2594 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2599 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2600 strlen(vs->fmp4_init_filename) + 1;
2602 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2603 if (!vs->base_output_dirname) {
2604 ret = AVERROR(ENOMEM);
2608 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2609 fmp4_init_filename_len);
2610 p = strrchr(vs->base_output_dirname, '/');
2613 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2614 fmp4_init_filename_len);
2616 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2617 fmp4_init_filename_len);
2622 if (!hls->use_localtime) {
2623 ret = sls_flag_check_duration_size_index(hls);
2628 ret = sls_flag_check_duration_size(hls, vs);
2633 if (vs->has_subtitle) {
2635 if (hls->flags & HLS_SINGLE_FILE)
2636 vtt_pattern = ".vtt";
2637 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2639 vs->vtt_basename = av_malloc(vtt_basename_size);
2640 if (!vs->vtt_basename) {
2641 ret = AVERROR(ENOMEM);
2644 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2645 if (!vs->vtt_m3u8_name ) {
2646 ret = AVERROR(ENOMEM);
2649 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2650 p = strrchr(vs->vtt_basename, '.');
2654 if ( hls->subtitle_filename ) {
2655 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2656 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2660 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2661 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2663 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2667 vs->baseurl = av_strdup(hls->baseurl);
2669 ret = AVERROR(ENOMEM);
2674 if ((ret = hls_mux_init(s, vs)) < 0)
2677 if (hls->flags & HLS_APPEND_LIST) {
2678 parse_playlist(s, vs->m3u8_name, vs);
2679 vs->discontinuity = 1;
2680 if (hls->init_time > 0) {
2681 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2682 " hls_init_time value will have no effect\n");
2684 hls->recording_time = hls->time * AV_TIME_BASE;
2688 if ((ret = hls_start(s, vs)) < 0)
2694 av_freep(&hls->key_basename);
2695 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2696 vs = &hls->var_streams[i];
2697 av_freep(&vs->basename);
2698 av_freep(&vs->vtt_basename);
2699 av_freep(&vs->fmp4_init_filename);
2700 av_freep(&vs->m3u8_name);
2701 av_freep(&vs->vtt_m3u8_name);
2702 av_freep(&vs->streams);
2703 av_freep(&vs->agroup);
2704 av_freep(&vs->ccgroup);
2705 av_freep(&vs->baseurl);
2707 avformat_free_context(vs->avf);
2709 avformat_free_context(vs->vtt_avf);
2711 for (i = 0; i < hls->nb_ccstreams; i++) {
2712 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2713 av_freep(&ccs->ccgroup);
2714 av_freep(&ccs->instreamid);
2715 av_freep(&ccs->language);
2717 av_freep(&hls->var_streams);
2718 av_freep(&hls->cc_streams);
2719 av_freep(&hls->master_m3u8_url);
2725 #define OFFSET(x) offsetof(HLSContext, x)
2726 #define E AV_OPT_FLAG_ENCODING_PARAM
2727 static const AVOption options[] = {
2728 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2729 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2730 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2731 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2732 {"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},
2733 {"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},
2735 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2737 {"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},
2738 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2739 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2740 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2741 {"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},
2742 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2743 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2744 {"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},
2745 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2746 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2747 {"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"},
2748 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2749 {"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"},
2750 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2751 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2752 {"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"},
2753 {"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"},
2754 {"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"},
2755 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2756 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2757 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2758 {"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"},
2759 {"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"},
2760 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2761 {"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"},
2762 {"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"},
2763 {"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"},
2764 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2765 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2766 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2767 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2768 {"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" },
2769 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2770 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2771 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2772 {"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" },
2773 {"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" },
2774 {"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" },
2775 {"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" },
2776 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2777 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2778 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2779 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2780 {"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},
2781 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2782 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2786 static const AVClass hls_class = {
2787 .class_name = "hls muxer",
2788 .item_name = av_default_item_name,
2790 .version = LIBAVUTIL_VERSION_INT,
2794 AVOutputFormat ff_hls_muxer = {
2796 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2797 .extensions = "m3u8",
2798 .priv_data_size = sizeof(HLSContext),
2799 .audio_codec = AV_CODEC_ID_AAC,
2800 .video_codec = AV_CODEC_ID_H264,
2801 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2802 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2804 .write_header = hls_write_header,
2805 .write_packet = hls_write_packet,
2806 .write_trailer = hls_write_trailer,
2807 .priv_class = &hls_class,