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 */
78 unsigned var_stream_idx;
80 char key_uri[LINE_BUFFER_SIZE + 1];
81 char iv_string[KEYSIZE*2 + 1];
83 struct HLSSegment *next;
86 typedef enum HLSFlags {
87 // Generate a single media file and use byte ranges in the playlist.
88 HLS_SINGLE_FILE = (1 << 0),
89 HLS_DELETE_SEGMENTS = (1 << 1),
90 HLS_ROUND_DURATIONS = (1 << 2),
91 HLS_DISCONT_START = (1 << 3),
92 HLS_OMIT_ENDLIST = (1 << 4),
93 HLS_SPLIT_BY_TIME = (1 << 5),
94 HLS_APPEND_LIST = (1 << 6),
95 HLS_PROGRAM_DATE_TIME = (1 << 7),
96 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
97 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
98 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
99 HLS_TEMP_FILE = (1 << 11),
100 HLS_PERIODIC_REKEY = (1 << 12),
101 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
109 typedef struct VariantStream {
110 unsigned var_stream_idx;
113 AVOutputFormat *oformat;
114 AVOutputFormat *vtt_oformat;
117 int init_range_length;
119 AVFormatContext *avf;
120 AVFormatContext *vtt_avf;
125 double dpp; // duration per packet
128 double duration; // last segment duration computed so far, in seconds
129 int64_t start_pos; // last segment starting position
130 int64_t size; // last segment size
132 int discontinuity_set;
134 int reference_stream_index;
136 HLSSegment *segments;
137 HLSSegment *last_segment;
138 HLSSegment *old_segments;
145 double initial_prog_date_time;
146 char current_segment_final_filename_fmt[1024]; // when renaming segments
148 char *fmp4_init_filename;
149 char *base_output_dirname;
152 char codec_attr[128];
153 CodecAttributeStatus attr_status;
154 unsigned int nb_streams;
155 int m3u8_created; /* status of media play-list creation */
156 char *agroup; /* audio group name */
157 char *ccgroup; /* closed caption group name */
161 typedef struct ClosedCaptionsStream {
162 char *ccgroup; /* closed caption group name */
163 char *instreamid; /* closed captions INSTREAM-ID */
164 char *language; /* closed captions langauge */
165 } ClosedCaptionsStream;
167 typedef struct HLSContext {
168 const AVClass *class; // Class for private options.
169 int64_t start_sequence;
170 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
172 float time; // Set by a private option.
173 float init_time; // Set by a private option.
174 int max_nb_segments; // Set by a private option.
175 int hls_delete_threshold; // Set by a private option.
177 int wrap; // Set by a private option.
179 uint32_t flags; // enum HLSFlags
180 uint32_t pl_type; // enum PlaylistType
181 char *segment_filename;
182 char *fmp4_init_filename;
185 int use_localtime; ///< flag to expand filename with localtime
186 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
188 int64_t recording_time;
189 int64_t max_seg_size; // every segment file max size
192 char *format_options_str;
193 char *vtt_format_options_str;
194 char *subtitle_filename;
195 AVDictionary *format_options;
205 char key_file[LINE_BUFFER_SIZE + 1];
206 char key_uri[LINE_BUFFER_SIZE + 1];
207 char key_string[KEYSIZE*2 + 1];
208 char iv_string[KEYSIZE*2 + 1];
209 AVDictionary *vtt_format_options;
214 VariantStream *var_streams;
215 unsigned int nb_varstreams;
216 ClosedCaptionsStream *cc_streams;
217 unsigned int nb_ccstreams;
219 int master_m3u8_created; /* status of master play-list creation */
220 char *master_m3u8_url; /* URL of the master m3u8 file */
221 int version; /* HLS version */
222 char *var_stream_map; /* user specified variant stream map string */
223 char *cc_stream_map; /* user specified closed caption streams map string */
224 char *master_pl_name;
225 unsigned int master_publish_rate;
227 AVIOContext *m3u8_out;
228 AVIOContext *sub_m3u8_out;
232 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
233 AVDictionary **options) {
234 HLSContext *hls = s->priv_data;
235 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
236 int err = AVERROR_MUXER_NOT_FOUND;
237 if (!*pb || !http_base_proto || !hls->http_persistent) {
238 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
239 #if CONFIG_HTTP_PROTOCOL
241 URLContext *http_url_context = ffio_geturlcontext(*pb);
242 av_assert0(http_url_context);
243 err = ff_http_do_new_request(http_url_context, filename);
245 ff_format_io_close(s, pb);
252 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
253 HLSContext *hls = s->priv_data;
254 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
257 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
258 ff_format_io_close(s, pb);
259 #if CONFIG_HTTP_PROTOCOL
261 URLContext *http_url_context = ffio_geturlcontext(*pb);
262 av_assert0(http_url_context);
264 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
269 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
271 int http_base_proto = ff_is_http_proto(s->url);
274 av_dict_set(options, "method", c->method, 0);
275 } else if (http_base_proto) {
276 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
277 av_dict_set(options, "method", "PUT", 0);
280 av_dict_set(options, "user_agent", c->user_agent, 0);
281 if (c->http_persistent)
282 av_dict_set_int(options, "multiple_requests", 1, 0);
284 av_dict_set_int(options, "timeout", c->timeout, 0);
287 static void write_codec_attr(AVStream *st, VariantStream *vs) {
288 int codec_strlen = strlen(vs->codec_attr);
291 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
293 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
296 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
297 uint8_t *data = st->codecpar->extradata;
298 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
299 snprintf(attr, sizeof(attr),
300 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
304 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
305 snprintf(attr, sizeof(attr), "mp4a.40.33");
306 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
307 snprintf(attr, sizeof(attr), "mp4a.40.34");
308 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
309 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
310 snprintf(attr, sizeof(attr), "mp4a.40.2");
311 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
312 snprintf(attr, sizeof(attr), "ac-3");
313 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
314 snprintf(attr, sizeof(attr), "ec-3");
318 // Don't write the same attribute multiple times
319 if (!av_stristr(vs->codec_attr, attr)) {
320 snprintf(vs->codec_attr + codec_strlen,
321 sizeof(vs->codec_attr) - codec_strlen,
322 "%s%s", codec_strlen ? "," : "", attr);
327 vs->codec_attr[0] = '\0';
328 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
332 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
337 int nd, addchar_count;
341 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
348 if (c == '%' && *(p+1) == '%') // %%
350 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
353 while (av_isdigit(*(p + addchar_count))) {
354 nd = nd * 10 + *(p + addchar_count) - '0';
358 if (*(p + addchar_count) == placeholder) {
359 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
360 p += (addchar_count + 1);
368 av_bprint_append_data(&buf, p, addchar_count);
371 if (!av_bprint_is_complete(&buf)) {
372 av_bprint_finalize(&buf, NULL);
375 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
381 static void write_styp(AVIOContext *pb)
384 ffio_wfourcc(pb, "styp");
385 ffio_wfourcc(pb, "msdh");
386 avio_wb32(pb, 0); /* minor */
387 ffio_wfourcc(pb, "msdh");
388 ffio_wfourcc(pb, "msix");
391 static int flush_dynbuf(VariantStream *vs, int *range_length)
393 AVFormatContext *ctx = vs->avf;
397 return AVERROR(EINVAL);
401 av_write_frame(ctx, NULL);
405 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
407 avio_write(vs->out, buffer, *range_length);
411 return avio_open_dyn_buf(&ctx->pb);
414 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
417 HLSSegment *segment, *previous_segment = NULL;
418 float playlist_duration = 0.0f;
419 int ret = 0, path_size, sub_path_size;
421 char *dirname = NULL, *p, *sub_path;
423 char *vtt_dirname = NULL;
424 AVDictionary *options = NULL;
425 AVIOContext *out = NULL;
426 const char *proto = NULL;
428 segment = vs->segments;
430 playlist_duration += segment->duration;
431 segment = segment->next;
434 segment = vs->old_segments;
437 playlist_duration -= segment->duration;
438 previous_segment = segment;
439 segment = previous_segment->next;
441 if (playlist_duration <= -previous_segment->duration) {
442 previous_segment->next = NULL;
445 if (segment_cnt >= hls->hls_delete_threshold) {
446 previous_segment->next = NULL;
451 if (segment && !hls->use_localtime_mkdir) {
452 if (hls->segment_filename) {
453 dirname = av_strdup(hls->segment_filename);
455 dirname = av_strdup(vs->avf->url);
458 ret = AVERROR(ENOMEM);
461 p = (char *)av_basename(dirname);
467 char * r_dirname = dirname;
469 /* if %v is present in the file's directory */
470 if (dirname && av_stristr(dirname, "%v")) {
472 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
473 ret = AVERROR(EINVAL);
480 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
482 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
483 path = av_malloc(path_size);
485 ret = AVERROR(ENOMEM);
489 if (hls->use_localtime_mkdir)
490 av_strlcpy(path, segment->filename, path_size);
491 else { // segment->filename contains basename only
492 av_strlcpy(path, dirname, path_size);
493 av_strlcat(path, segment->filename, path_size);
496 proto = avio_find_protocol_name(s->url);
497 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
498 av_dict_set(&options, "method", "DELETE", 0);
499 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
501 ff_format_io_close(vs->avf, &out);
502 } else if (unlink(path) < 0) {
503 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
504 path, strerror(errno));
507 if ((segment->sub_filename[0] != '\0')) {
508 vtt_dirname = av_strdup(vs->vtt_avf->url);
510 ret = AVERROR(ENOMEM);
513 p = (char *)av_basename(vtt_dirname);
515 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
516 sub_path = av_malloc(sub_path_size);
518 ret = AVERROR(ENOMEM);
522 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
523 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
525 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
526 av_dict_set(&options, "method", "DELETE", 0);
527 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
531 ff_format_io_close(vs->vtt_avf, &out);
532 } else if (unlink(sub_path) < 0) {
533 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
534 sub_path, strerror(errno));
539 previous_segment = segment;
540 segment = previous_segment->next;
541 av_free(previous_segment);
547 av_free(vtt_dirname);
552 static int randomize(uint8_t *buf, int len)
555 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
558 if (RAND_bytes(buf, len))
561 return AVERROR(ENOSYS);
563 return AVERROR(EINVAL);
566 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
568 HLSContext *hls = s->priv_data;
572 uint8_t key[KEYSIZE];
574 len = strlen(s->url) + 4 + 1;
575 hls->key_basename = av_mallocz(len);
576 if (!hls->key_basename)
577 return AVERROR(ENOMEM);
579 av_strlcpy(hls->key_basename, s->url, len);
580 av_strlcat(hls->key_basename, ".key", len);
583 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
584 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
586 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
587 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
590 if (!*hls->iv_string) {
591 uint8_t iv[16] = { 0 };
595 AV_WB64(iv + 8, vs->sequence);
597 memcpy(iv, hls->iv, sizeof(iv));
599 ff_data_to_hex(buf, iv, sizeof(iv), 0);
601 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
604 if (!*hls->key_uri) {
605 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
606 return AVERROR(EINVAL);
609 if (!*hls->key_file) {
610 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
611 return AVERROR(EINVAL);
614 if (!*hls->key_string) {
616 if ((ret = randomize(key, sizeof(key))) < 0) {
617 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
621 memcpy(key, hls->key, sizeof(key));
624 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
625 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
627 avio_seek(pb, 0, SEEK_CUR);
628 avio_write(pb, key, KEYSIZE);
635 static int hls_encryption_start(AVFormatContext *s)
637 HLSContext *hls = s->priv_data;
640 uint8_t key[KEYSIZE];
642 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
643 av_log(hls, AV_LOG_ERROR,
644 "error opening key info file %s\n", hls->key_info_file);
648 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
649 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
651 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
652 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
654 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
655 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
657 ff_format_io_close(s, &pb);
659 if (!*hls->key_uri) {
660 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
661 return AVERROR(EINVAL);
664 if (!*hls->key_file) {
665 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
666 return AVERROR(EINVAL);
669 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
670 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
674 ret = avio_read(pb, key, sizeof(key));
675 ff_format_io_close(s, &pb);
676 if (ret != sizeof(key)) {
677 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
678 if (ret >= 0 || ret == AVERROR_EOF)
679 ret = AVERROR(EINVAL);
682 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
687 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
689 AVDictionary *options = NULL;
690 HLSContext *hls = s->priv_data;
692 AVFormatContext *vtt_oc = NULL;
693 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
696 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
701 oc->url = av_strdup("");
703 return AVERROR(ENOMEM);
705 oc->oformat = vs->oformat;
706 oc->interrupt_callback = s->interrupt_callback;
707 oc->max_delay = s->max_delay;
708 oc->opaque = s->opaque;
709 oc->io_open = s->io_open;
710 oc->io_close = s->io_close;
711 av_dict_copy(&oc->metadata, s->metadata, 0);
713 if(vs->vtt_oformat) {
714 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
717 vtt_oc = vs->vtt_avf;
718 vtt_oc->oformat = vs->vtt_oformat;
719 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
722 for (i = 0; i < vs->nb_streams; i++) {
724 AVFormatContext *loc;
725 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
730 if (!(st = avformat_new_stream(loc, NULL)))
731 return AVERROR(ENOMEM);
732 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
733 if (!oc->oformat->codec_tag ||
734 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
735 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
736 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
738 st->codecpar->codec_tag = 0;
741 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
742 st->time_base = vs->streams[i]->time_base;
743 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
746 vs->packets_written = 1;
750 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
751 if (hls->max_seg_size > 0) {
752 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
753 return AVERROR_PATCHWELCOME;
756 vs->packets_written = 0;
757 vs->init_range_length = 0;
758 set_http_options(s, &options, hls);
759 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
762 if (byterange_mode) {
763 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
765 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
767 av_dict_free(&options);
769 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
773 if (hls->format_options_str) {
774 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
776 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
777 hls->format_options_str);
782 av_dict_copy(&options, hls->format_options, 0);
783 av_dict_set(&options, "fflags", "-autobsf", 0);
784 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
785 ret = avformat_init_output(oc, &options);
788 if (av_dict_count(options)) {
789 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
790 av_dict_free(&options);
791 return AVERROR(EINVAL);
794 av_dict_free(&options);
799 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
802 if (!av_strcasecmp(segment->filename,filename))
804 segment = segment->next;
806 return (HLSSegment *) NULL;
809 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
810 VariantStream *vs, HLSSegment *en,
811 double duration, int64_t pos, int64_t size)
813 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
814 strlen(vs->current_segment_final_filename_fmt)) {
815 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
818 return AVERROR(ENOMEM);
820 ff_format_set_url(vs->avf, new_url);
821 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
822 char *filename = NULL;
823 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
824 av_log(hls, AV_LOG_ERROR,
825 "Invalid second level segment filename template '%s', "
826 "you can try to remove second_level_segment_size flag\n",
830 return AVERROR(EINVAL);
832 ff_format_set_url(vs->avf, filename);
834 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
835 char *filename = NULL;
836 if (replace_int_data_in_filename(&filename, vs->avf->url,
837 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
838 av_log(hls, AV_LOG_ERROR,
839 "Invalid second level segment filename template '%s', "
840 "you can try to remove second_level_segment_time flag\n",
844 return AVERROR(EINVAL);
846 ff_format_set_url(vs->avf, filename);
852 static int sls_flag_check_duration_size_index(HLSContext *hls)
856 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
857 av_log(hls, AV_LOG_ERROR,
858 "second_level_segment_duration hls_flag requires strftime to be true\n");
859 ret = AVERROR(EINVAL);
861 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
862 av_log(hls, AV_LOG_ERROR,
863 "second_level_segment_size hls_flag requires strfime to be true\n");
864 ret = AVERROR(EINVAL);
866 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
867 av_log(hls, AV_LOG_ERROR,
868 "second_level_segment_index hls_flag requires strftime to be true\n");
869 ret = AVERROR(EINVAL);
875 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
877 const char *proto = avio_find_protocol_name(vs->basename);
878 int segment_renaming_ok = proto && !strcmp(proto, "file");
881 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
882 av_log(hls, AV_LOG_ERROR,
883 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
884 ret = AVERROR(EINVAL);
886 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
887 av_log(hls, AV_LOG_ERROR,
888 "second_level_segment_size hls_flag works only with file protocol segment names\n");
889 ret = AVERROR(EINVAL);
895 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
896 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
897 strlen(vs->current_segment_final_filename_fmt)) {
898 ff_rename(old_filename, vs->avf->url, hls);
902 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
904 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
905 char *filename = NULL;
906 if (replace_int_data_in_filename(&filename,
908 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
910 oc->url, 'd', vs->sequence) < 1) {
912 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
913 "you can try to remove second_level_segment_index flag\n",
916 return AVERROR(EINVAL);
918 ff_format_set_url(oc, filename);
920 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
921 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
922 sizeof(vs->current_segment_final_filename_fmt));
923 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
924 char *filename = NULL;
925 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
926 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
927 "you can try to remove second_level_segment_size flag\n",
930 return AVERROR(EINVAL);
932 ff_format_set_url(oc, filename);
934 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
935 char *filename = NULL;
936 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
937 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
938 "you can try to remove second_level_segment_time flag\n",
941 return AVERROR(EINVAL);
943 ff_format_set_url(oc, filename);
949 /* Create a new segment and append it to the segment list */
950 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
951 VariantStream *vs, double duration, int64_t pos,
954 HLSSegment *en = av_malloc(sizeof(*en));
955 const char *filename;
956 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
960 return AVERROR(ENOMEM);
962 en->var_stream_idx = vs->var_stream_idx;
963 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
968 filename = av_basename(vs->avf->url);
970 if (hls->use_localtime_mkdir) {
971 filename = vs->avf->url;
973 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
974 && !byterange_mode) {
975 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
977 av_strlcpy(en->filename, filename, sizeof(en->filename));
980 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
982 en->sub_filename[0] = '\0';
984 en->duration = duration;
990 if (vs->discontinuity) {
992 vs->discontinuity = 0;
995 if (hls->key_info_file || hls->encrypt) {
996 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
997 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1003 vs->last_segment->next = en;
1005 vs->last_segment = en;
1007 // EVENT or VOD playlists imply sliding window cannot be used
1008 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1009 hls->max_nb_segments = 0;
1011 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1013 vs->initial_prog_date_time += en->duration;
1014 vs->segments = en->next;
1015 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1017 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1019 !(hls->flags & HLS_SINGLE_FILE)) {
1021 en->next = vs->old_segments;
1022 vs->old_segments = en;
1023 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1030 if (hls->max_seg_size > 0) {
1038 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1040 HLSContext *hls = s->priv_data;
1042 int ret = 0, is_segment = 0;
1043 int64_t new_start_pos;
1048 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1049 &s->interrupt_callback, NULL,
1050 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1053 ff_get_chomp_line(in, line, sizeof(line));
1054 if (strcmp(line, "#EXTM3U")) {
1055 ret = AVERROR_INVALIDDATA;
1059 vs->discontinuity = 0;
1060 while (!avio_feof(in)) {
1061 ff_get_chomp_line(in, line, sizeof(line));
1062 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1063 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1064 if (tmp_sequence < vs->sequence)
1065 av_log(hls, AV_LOG_VERBOSE,
1066 "Found playlist sequence number was smaller """
1067 "than specified start sequence number: %"PRId64" < %"PRId64", "
1068 "omitting\n", tmp_sequence, hls->start_sequence);
1070 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1071 vs->sequence = tmp_sequence;
1073 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1075 vs->discontinuity = 1;
1076 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1078 vs->duration = atof(ptr);
1079 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1080 ptr = av_stristr(line, "URI=\"");
1082 ptr += strlen("URI=\"");
1083 end = av_stristr(ptr, ",");
1085 av_strlcpy(hls->key_uri, ptr, end - ptr);
1087 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1091 ptr = av_stristr(line, "IV=0x");
1093 ptr += strlen("IV=0x");
1094 end = av_stristr(ptr, ",");
1096 av_strlcpy(hls->iv_string, ptr, end - ptr);
1098 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1102 } else if (av_strstart(line, "#", NULL)) {
1104 } else if (line[0]) {
1106 char *new_file = av_strdup(line);
1108 ret = AVERROR(ENOMEM);
1111 ff_format_set_url(vs->avf, new_file);
1113 new_start_pos = avio_tell(vs->avf->pb);
1114 vs->size = new_start_pos - vs->start_pos;
1115 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1118 vs->start_pos = new_start_pos;
1128 static void hls_free_segments(HLSSegment *p)
1139 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1141 size_t len = strlen(oc->url);
1142 char *final_filename = av_strdup(oc->url);
1145 if (!final_filename)
1146 return AVERROR(ENOMEM);
1147 final_filename[len-4] = '\0';
1148 ret = ff_rename(oc->url, final_filename, s);
1149 oc->url[len-4] = '\0';
1150 av_freep(&final_filename);
1154 static int get_relative_url(const char *master_url, const char *media_url,
1155 char *rel_url, int rel_url_buf_size)
1159 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1160 strrchr(master_url, '\\');
1162 base_len = FFABS(p - master_url);
1163 if (av_strncasecmp(master_url, media_url, base_len)) {
1164 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1165 return AVERROR(EINVAL);
1168 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1172 static int64_t get_stream_bit_rate(AVStream *stream) {
1173 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1175 AV_PKT_DATA_CPB_PROPERTIES,
1179 if (stream->codecpar->bit_rate)
1180 return stream->codecpar->bit_rate;
1182 return props->max_bitrate;
1187 static int create_master_playlist(AVFormatContext *s,
1188 VariantStream * const input_vs)
1190 HLSContext *hls = s->priv_data;
1191 VariantStream *vs, *temp_vs;
1192 AVStream *vid_st, *aud_st;
1193 AVDictionary *options = NULL;
1195 int m3u8_name_size, ret, bandwidth;
1196 char *m3u8_rel_name, *ccgroup;
1197 ClosedCaptionsStream *ccs;
1199 input_vs->m3u8_created = 1;
1200 if (!hls->master_m3u8_created) {
1201 /* For the first time, wait until all the media playlists are created */
1202 for (i = 0; i < hls->nb_varstreams; i++)
1203 if (!hls->var_streams[i].m3u8_created)
1206 /* Keep publishing the master playlist at the configured rate */
1207 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1208 input_vs->number % hls->master_publish_rate)
1212 set_http_options(s, &options, hls);
1214 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1215 av_dict_free(&options);
1217 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1218 hls->master_m3u8_url);
1222 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1224 for (i = 0; i < hls->nb_ccstreams; i++) {
1225 ccs = &(hls->cc_streams[i]);
1226 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1227 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1228 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1230 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1231 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1234 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1235 for (i = 0; i < hls->nb_varstreams; i++) {
1236 vs = &(hls->var_streams[i]);
1238 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1241 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1242 m3u8_rel_name = av_malloc(m3u8_name_size);
1243 if (!m3u8_rel_name) {
1244 ret = AVERROR(ENOMEM);
1247 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1248 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1249 m3u8_rel_name, m3u8_name_size);
1251 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1255 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1257 av_freep(&m3u8_rel_name);
1260 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1261 for (i = 0; i < hls->nb_varstreams; i++) {
1262 vs = &(hls->var_streams[i]);
1264 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1265 m3u8_rel_name = av_malloc(m3u8_name_size);
1266 if (!m3u8_rel_name) {
1267 ret = AVERROR(ENOMEM);
1270 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1271 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1272 m3u8_rel_name, m3u8_name_size);
1274 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1280 for (j = 0; j < vs->nb_streams; j++) {
1281 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1282 vid_st = vs->streams[j];
1283 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1284 aud_st = vs->streams[j];
1287 if (!vid_st && !aud_st) {
1288 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1293 * Traverse through the list of audio only rendition streams and find
1294 * the rendition which has highest bitrate in the same audio group
1297 for (j = 0; j < hls->nb_varstreams; j++) {
1298 temp_vs = &(hls->var_streams[j]);
1299 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1301 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1303 aud_st = temp_vs->streams[0];
1304 if (temp_vs->streams[0]->codecpar->bit_rate >
1305 aud_st->codecpar->bit_rate)
1306 aud_st = temp_vs->streams[0];
1313 bandwidth += get_stream_bit_rate(vid_st);
1315 bandwidth += get_stream_bit_rate(aud_st);
1316 bandwidth += bandwidth / 10;
1319 if (vid_st && vs->ccgroup) {
1320 /* check if this group name is available in the cc map string */
1321 for (j = 0; j < hls->nb_ccstreams; j++) {
1322 ccs = &(hls->cc_streams[j]);
1323 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1324 ccgroup = vs->ccgroup;
1328 if (j == hls->nb_ccstreams)
1329 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1333 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1334 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1336 av_freep(&m3u8_rel_name);
1340 hls->master_m3u8_created = 1;
1341 av_freep(&m3u8_rel_name);
1342 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1346 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1348 HLSContext *hls = s->priv_data;
1350 int target_duration = 0;
1352 char temp_filename[1024];
1353 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1354 const char *proto = avio_find_protocol_name(s->url);
1355 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1356 static unsigned warned_non_file;
1357 char *key_uri = NULL;
1358 char *iv_string = NULL;
1359 AVDictionary *options = NULL;
1360 double prog_date_time = vs->initial_prog_date_time;
1361 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1362 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1365 if (byterange_mode) {
1370 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1374 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1378 if (!use_temp_file && !warned_non_file++)
1379 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1381 set_http_options(s, &options, hls);
1382 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1383 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1386 for (en = vs->segments; en; en = en->next) {
1387 if (target_duration <= en->duration)
1388 target_duration = lrint(en->duration);
1391 vs->discontinuity_set = 0;
1392 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1393 target_duration, sequence, hls->pl_type);
1395 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1396 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1397 vs->discontinuity_set = 1;
1399 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1400 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1402 for (en = vs->segments; en; en = en->next) {
1403 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1404 av_strcasecmp(en->iv_string, iv_string))) {
1405 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1407 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1408 avio_printf(hls->m3u8_out, "\n");
1409 key_uri = en->key_uri;
1410 iv_string = en->iv_string;
1413 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1414 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1415 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1418 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1419 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1420 en->size, en->pos, vs->baseurl,
1421 en->filename, prog_date_time_p);
1423 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1427 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1428 ff_hls_write_end_list(hls->m3u8_out);
1430 if( vs->vtt_m3u8_name ) {
1431 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1433 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1434 target_duration, sequence, PLAYLIST_TYPE_NONE);
1435 for (en = vs->segments; en; en = en->next) {
1436 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1437 en->duration, 0, en->size, en->pos,
1438 vs->baseurl, en->sub_filename, NULL);
1440 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1445 ff_hls_write_end_list(hls->sub_m3u8_out);
1450 av_dict_free(&options);
1451 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1452 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1454 ff_rename(temp_filename, vs->m3u8_name, s);
1456 if (ret >= 0 && hls->master_pl_name)
1457 if (create_master_playlist(s, vs) < 0)
1458 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1463 static int hls_start(AVFormatContext *s, VariantStream *vs)
1465 HLSContext *c = s->priv_data;
1466 AVFormatContext *oc = vs->avf;
1467 AVFormatContext *vtt_oc = vs->vtt_avf;
1468 AVDictionary *options = NULL;
1469 const char *proto = avio_find_protocol_name(s->url);
1470 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1471 char *filename, iv_string[KEYSIZE*2 + 1];
1474 if (c->flags & HLS_SINGLE_FILE) {
1475 char *new_name = av_strdup(vs->basename);
1477 return AVERROR(ENOMEM);
1478 ff_format_set_url(oc, new_name);
1479 if (vs->vtt_basename) {
1480 new_name = av_strdup(vs->vtt_basename);
1482 return AVERROR(ENOMEM);
1483 ff_format_set_url(vtt_oc, new_name);
1485 } else if (c->max_seg_size > 0) {
1486 char *filename = NULL;
1487 if (replace_int_data_in_filename(&filename,
1489 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1491 vs->basename, 'd', vs->sequence) < 1) {
1494 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1495 return AVERROR(EINVAL);
1497 ff_format_set_url(oc, filename);
1499 if (c->use_localtime) {
1501 struct tm *tm, tmpbuf;
1502 int bufsize = strlen(vs->basename) + 1024;
1503 char *buf = av_mallocz(bufsize);
1505 return AVERROR(ENOMEM);
1507 tm = localtime_r(&now0, &tmpbuf);
1508 ff_format_set_url(oc, buf);
1509 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1510 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1511 return AVERROR(EINVAL);
1514 err = sls_flag_use_localtime_filename(oc, c, vs);
1516 return AVERROR(ENOMEM);
1519 if (c->use_localtime_mkdir) {
1521 char *fn_copy = av_strdup(oc->url);
1523 return AVERROR(ENOMEM);
1525 dir = av_dirname(fn_copy);
1526 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1527 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1529 return AVERROR(errno);
1534 char *filename = NULL;
1535 if (replace_int_data_in_filename(&filename,
1537 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1539 vs->basename, 'd', vs->sequence) < 1) {
1542 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1543 return AVERROR(EINVAL);
1545 ff_format_set_url(oc, filename);
1547 if( vs->vtt_basename) {
1548 char *filename = NULL;
1549 if (replace_int_data_in_filename(&filename,
1551 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1553 vs->vtt_basename, 'd', vs->sequence) < 1) {
1556 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1557 return AVERROR(EINVAL);
1559 ff_format_set_url(vtt_oc, filename);
1564 set_http_options(s, &options, c);
1566 if (use_temp_file) {
1567 char *new_name = av_asprintf("%s.tmp", oc->url);
1569 return AVERROR(ENOMEM);
1570 ff_format_set_url(oc, new_name);
1573 if (c->key_info_file || c->encrypt) {
1574 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1575 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1576 return AVERROR_PATCHWELCOME;
1579 if (c->key_info_file && c->encrypt) {
1580 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1581 " ignoring -hls_enc\n");
1584 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1585 if (c->key_info_file) {
1586 if ((err = hls_encryption_start(s)) < 0)
1589 if ((err = do_encrypt(s, vs)) < 0)
1592 c->encrypt_started = 1;
1594 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1597 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1599 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1600 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1603 filename = av_asprintf("crypto:%s", oc->url);
1605 err = AVERROR(ENOMEM);
1608 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1610 av_dict_free(&options);
1613 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1614 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0)
1617 if (vs->vtt_basename) {
1618 set_http_options(s, &options, c);
1619 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0)
1622 av_dict_free(&options);
1624 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1625 /* We only require one PAT/PMT per segment. */
1626 if (oc->oformat->priv_class && oc->priv_data) {
1629 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1631 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1632 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1633 av_opt_set(oc->priv_data, "pat_period", period, 0);
1637 if (vs->vtt_basename) {
1638 err = avformat_write_header(vtt_oc,NULL);
1645 av_dict_free(&options);
1650 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1653 time_t t = time(NULL);
1654 struct tm *p, tmbuf;
1655 HLSContext *hls = s->priv_data;
1657 p = localtime_r(&t, &tmbuf);
1658 // no %s support when strftime returned error or left format string unchanged
1659 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1660 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1661 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1663 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1666 static int append_postfix(char *name, int name_buf_len, int i)
1669 char extension[10] = {'\0'};
1671 p = strrchr(name, '.');
1673 av_strlcpy(extension, p, sizeof(extension));
1677 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1679 if (strlen(extension))
1680 av_strlcat(name, extension, name_buf_len);
1685 static int validate_name(int nb_vs, const char *fn)
1687 const char *filename, *subdir_name;
1688 char *fn_dup = NULL;
1692 ret = AVERROR(EINVAL);
1696 fn_dup = av_strdup(fn);
1698 ret = AVERROR(ENOMEM);
1702 filename = av_basename(fn);
1703 subdir_name = av_dirname(fn_dup);
1705 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1706 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1708 ret = AVERROR(EINVAL);
1712 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1713 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1715 ret = AVERROR(EINVAL);
1724 static int format_name(char *buf, int buf_len, int index)
1726 const char *proto, *dir;
1727 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1730 if (!av_stristr(buf, "%v"))
1733 orig_buf_dup = av_strdup(buf);
1734 if (!orig_buf_dup) {
1735 ret = AVERROR(ENOMEM);
1739 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1740 ret = AVERROR(EINVAL);
1743 av_strlcpy(buf, mod_buf, buf_len);
1745 proto = avio_find_protocol_name(orig_buf_dup);
1746 dir = av_dirname(orig_buf_dup);
1748 /* if %v is present in the file's directory, create sub-directory */
1749 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1750 mod_buf_dup = av_strdup(buf);
1752 ret = AVERROR(ENOMEM);
1756 dir = av_dirname(mod_buf_dup);
1757 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1758 ret = AVERROR(errno);
1764 av_freep(&orig_buf_dup);
1765 av_freep(&mod_buf_dup);
1770 static int get_nth_codec_stream_index(AVFormatContext *s,
1771 enum AVMediaType codec_type,
1774 unsigned int stream_index, cnt;
1775 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1778 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1779 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1781 if (cnt == stream_id)
1782 return stream_index;
1788 static int parse_variant_stream_mapstring(AVFormatContext *s)
1790 HLSContext *hls = s->priv_data;
1793 enum AVMediaType codec_type;
1794 int nb_varstreams, nb_streams;
1795 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1799 * Expected format for var_stream_map string is as below:
1801 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1802 * This string specifies how to group the audio, video and subtitle streams
1803 * into different variant streams. The variant stream groups are separated
1806 * a:, v:, s: are keys to specify audio, video and subtitle streams
1807 * respectively. Allowed values are 0 to 9 digits (limited just based on
1810 * agroup: is key to specify audio group. A string can be given as value.
1812 p = av_strdup(hls->var_stream_map);
1814 while(av_strtok(q, " \t", &saveptr1)) {
1816 hls->nb_varstreams++;
1820 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1821 if (!hls->var_streams)
1822 return AVERROR(ENOMEM);
1824 p = hls->var_stream_map;
1826 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1829 if (nb_varstreams < hls->nb_varstreams) {
1830 vs = &(hls->var_streams[nb_varstreams]);
1831 vs->var_stream_idx = nb_varstreams;
1834 return AVERROR(EINVAL);
1837 while (q < varstr + strlen(varstr)) {
1838 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1839 !av_strncasecmp(q, "s:", 2))
1843 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1845 return AVERROR(ENOMEM);
1848 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1851 if (av_strstart(keyval, "agroup:", &val)) {
1852 vs->agroup = av_strdup(val);
1854 return AVERROR(ENOMEM);
1856 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1857 vs->ccgroup = av_strdup(val);
1859 return AVERROR(ENOMEM);
1861 } else if (av_strstart(keyval, "v:", &val)) {
1862 codec_type = AVMEDIA_TYPE_VIDEO;
1863 } else if (av_strstart(keyval, "a:", &val)) {
1864 codec_type = AVMEDIA_TYPE_AUDIO;
1865 } else if (av_strstart(keyval, "s:", &val)) {
1866 codec_type = AVMEDIA_TYPE_SUBTITLE;
1868 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1869 return AVERROR(EINVAL);
1873 if (av_isdigit(*val))
1874 stream_index = get_nth_codec_stream_index (s, codec_type,
1877 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1878 vs->streams[nb_streams++] = s->streams[stream_index];
1880 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1881 return AVERROR(EINVAL);
1885 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1886 hls->nb_varstreams);
1891 static int parse_cc_stream_mapstring(AVFormatContext *s)
1893 HLSContext *hls = s->priv_data;
1895 char *p, *q, *ccstr, *keyval;
1896 char *saveptr1 = NULL, *saveptr2 = NULL;
1898 ClosedCaptionsStream *ccs;
1900 p = av_strdup(hls->cc_stream_map);
1902 while(av_strtok(q, " \t", &saveptr1)) {
1904 hls->nb_ccstreams++;
1908 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1909 if (!hls->cc_streams)
1910 return AVERROR(ENOMEM);
1912 p = hls->cc_stream_map;
1914 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1917 if (nb_ccstreams < hls->nb_ccstreams)
1918 ccs = &(hls->cc_streams[nb_ccstreams++]);
1920 return AVERROR(EINVAL);
1922 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1925 if (av_strstart(keyval, "ccgroup:", &val)) {
1926 ccs->ccgroup = av_strdup(val);
1928 return AVERROR(ENOMEM);
1929 } else if (av_strstart(keyval, "instreamid:", &val)) {
1930 ccs->instreamid = av_strdup(val);
1931 if (!ccs->instreamid)
1932 return AVERROR(ENOMEM);
1933 } else if (av_strstart(keyval, "language:", &val)) {
1934 ccs->language = av_strdup(val);
1936 return AVERROR(ENOMEM);
1938 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1939 return AVERROR(EINVAL);
1943 if (!ccs->ccgroup || !ccs->instreamid) {
1944 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1945 return AVERROR(EINVAL);
1948 if (av_strstart(ccs->instreamid, "CC", &val)) {
1949 if(atoi(val) < 1 || atoi(val) > 4) {
1950 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1951 atoi(val), ccs->instreamid);
1952 return AVERROR(EINVAL);
1954 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1955 if(atoi(val) < 1 || atoi(val) > 63) {
1956 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1957 atoi(val), ccs->instreamid);
1958 return AVERROR(EINVAL);
1961 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1963 return AVERROR(EINVAL);
1970 static int update_variant_stream_info(AVFormatContext *s) {
1971 HLSContext *hls = s->priv_data;
1975 if (hls->cc_stream_map) {
1976 ret = parse_cc_stream_mapstring(s);
1981 if (hls->var_stream_map) {
1982 return parse_variant_stream_mapstring(s);
1984 //By default, a single variant stream with all the codec streams is created
1985 hls->nb_varstreams = 1;
1986 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1987 hls->nb_varstreams);
1988 if (!hls->var_streams)
1989 return AVERROR(ENOMEM);
1991 hls->var_streams[0].var_stream_idx = 0;
1992 hls->var_streams[0].nb_streams = s->nb_streams;
1993 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1994 hls->var_streams[0].nb_streams);
1995 if (!hls->var_streams[0].streams)
1996 return AVERROR(ENOMEM);
1998 //by default, the first available ccgroup is mapped to the variant stream
1999 if (hls->nb_ccstreams) {
2000 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2001 if (!hls->var_streams[0].ccgroup)
2002 return AVERROR(ENOMEM);
2005 for (i = 0; i < s->nb_streams; i++)
2006 hls->var_streams[0].streams[i] = s->streams[i];
2011 static int update_master_pl_info(AVFormatContext *s) {
2012 HLSContext *hls = s->priv_data;
2014 char *fn1= NULL, *fn2 = NULL;
2017 fn1 = av_strdup(s->url);
2019 ret = AVERROR(ENOMEM);
2023 dir = av_dirname(fn1);
2026 * if output file's directory has %v, variants are created in sub-directories
2027 * then master is created at the sub-directories level
2029 if (dir && av_stristr(av_basename(dir), "%v")) {
2030 fn2 = av_strdup(dir);
2032 ret = AVERROR(ENOMEM);
2035 dir = av_dirname(fn2);
2038 if (dir && strcmp(dir, "."))
2039 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2041 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2043 if (!hls->master_m3u8_url) {
2044 ret = AVERROR(ENOMEM);
2055 static int hls_write_header(AVFormatContext *s)
2057 HLSContext *hls = s->priv_data;
2059 AVDictionary *options = NULL;
2060 VariantStream *vs = NULL;
2062 for (i = 0; i < hls->nb_varstreams; i++) {
2063 vs = &hls->var_streams[i];
2065 av_dict_copy(&options, hls->format_options, 0);
2066 ret = avformat_write_header(vs->avf, &options);
2067 if (av_dict_count(options)) {
2068 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2069 ret = AVERROR(EINVAL);
2070 av_dict_free(&options);
2073 av_dict_free(&options);
2074 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2075 for (j = 0; j < vs->nb_streams; j++) {
2077 AVStream *outer_st = vs->streams[j];
2079 if (hls->max_seg_size > 0) {
2080 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2081 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2082 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2083 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2084 outer_st->codecpar->bit_rate, hls->max_seg_size);
2088 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2089 inner_st = vs->avf->streams[j];
2090 else if (vs->vtt_avf)
2091 inner_st = vs->vtt_avf->streams[0];
2093 /* We have a subtitle stream, when the user does not want one */
2097 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2098 write_codec_attr(outer_st, vs);
2101 /* Update the Codec Attr string for the mapped audio groups */
2102 if (vs->has_video && vs->agroup) {
2103 for (j = 0; j < hls->nb_varstreams; j++) {
2104 VariantStream *vs_agroup = &(hls->var_streams[j]);
2105 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2106 vs_agroup->agroup &&
2107 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2108 write_codec_attr(vs_agroup->streams[0], vs);
2118 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2120 HLSContext *hls = s->priv_data;
2121 AVFormatContext *oc = NULL;
2122 AVStream *st = s->streams[pkt->stream_index];
2123 int64_t end_pts = 0;
2125 int ret = 0, can_split = 1, i, j;
2126 int stream_index = 0;
2127 int range_length = 0;
2128 const char *proto = avio_find_protocol_name(s->url);
2129 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2130 uint8_t *buffer = NULL;
2131 VariantStream *vs = NULL;
2132 AVDictionary *options = NULL;
2133 char *old_filename = NULL;
2135 for (i = 0; i < hls->nb_varstreams; i++) {
2136 vs = &hls->var_streams[i];
2137 for (j = 0; j < vs->nb_streams; j++) {
2138 if (vs->streams[j] == st) {
2139 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2155 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2156 return AVERROR(ENOMEM);
2159 end_pts = hls->recording_time * vs->number;
2161 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2162 /* reset end_pts, hls->recording_time at end of the init hls list */
2163 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2164 int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2165 hls->recording_time = hls->time * AV_TIME_BASE;
2166 end_pts = init_list_dur + after_init_list_dur ;
2169 if (vs->start_pts == AV_NOPTS_VALUE) {
2170 vs->start_pts = pkt->pts;
2173 if (vs->has_video) {
2174 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2175 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2176 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2178 if (pkt->pts == AV_NOPTS_VALUE)
2179 is_ref_pkt = can_split = 0;
2182 if (vs->end_pts == AV_NOPTS_VALUE)
2183 vs->end_pts = pkt->pts;
2184 if (vs->new_start) {
2186 vs->duration = (double)(pkt->pts - vs->end_pts)
2187 * st->time_base.num / st->time_base.den;
2188 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2190 if (pkt->duration) {
2191 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2193 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2194 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2200 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2201 end_pts, AV_TIME_BASE_Q) >= 0) {
2202 int64_t new_start_pos;
2203 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2205 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2207 new_start_pos = avio_tell(vs->avf->pb);
2208 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2209 vs->size = new_start_pos - vs->start_pos;
2211 vs->size = new_start_pos;
2214 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2215 if (!vs->init_range_length) {
2217 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2218 avio_write(vs->out, buffer, range_length);
2220 vs->init_range_length = range_length;
2221 avio_open_dyn_buf(&oc->pb);
2222 vs->packets_written = 0;
2223 vs->start_pos = range_length;
2224 if (!byterange_mode) {
2225 ff_format_io_close(s, &vs->out);
2226 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2230 if (!byterange_mode) {
2231 hlsenc_io_close(s, &oc->pb, oc->url);
2234 if (!byterange_mode) {
2236 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2240 // look to rename the asset name
2241 if (use_temp_file && oc->url[0]) {
2242 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2243 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4) {
2244 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2248 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2249 if (hls->flags & HLS_SINGLE_FILE) {
2250 ret = flush_dynbuf(vs, &range_length);
2252 av_free(old_filename);
2255 vs->size = range_length;
2257 set_http_options(s, &options, hls);
2258 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options);
2260 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n",
2264 write_styp(vs->out);
2265 ret = flush_dynbuf(vs, &range_length);
2269 ff_format_io_close(s, &vs->out);
2271 // rename that segment from .tmp to the real one
2272 if (use_temp_file && oc->url[0]) {
2273 hls_rename_temp_file(s, oc);
2274 av_free(old_filename);
2275 old_filename = av_strdup(vs->avf->url);
2277 if (!old_filename) {
2278 return AVERROR(ENOMEM);
2284 old_filename = av_strdup(vs->avf->url);
2285 if (!old_filename) {
2286 return AVERROR(ENOMEM);
2289 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2290 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2291 vs->end_pts = pkt->pts;
2294 av_free(old_filename);
2299 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2300 vs->start_pos = new_start_pos;
2302 vs->start_pos += vs->size;
2305 if (hls->flags & HLS_SINGLE_FILE) {
2307 } else if (hls->max_seg_size > 0) {
2308 if (vs->start_pos >= hls->max_seg_size) {
2310 sls_flag_file_rename(hls, vs, old_filename);
2311 ret = hls_start(s, vs);
2313 /* When split segment by byte, the duration is short than hls_time,
2314 * so it is not enough one segment duration as hls_time, */
2319 sls_flag_file_rename(hls, vs, old_filename);
2320 ret = hls_start(s, vs);
2322 av_free(old_filename);
2328 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2329 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2330 if ((ret = hls_window(s, 0, vs)) < 0) {
2336 vs->packets_written++;
2338 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2343 static int hls_write_trailer(struct AVFormatContext *s)
2345 HLSContext *hls = s->priv_data;
2346 AVFormatContext *oc = NULL;
2347 AVFormatContext *vtt_oc = NULL;
2348 char *old_filename = NULL;
2349 const char *proto = avio_find_protocol_name(s->url);
2350 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2353 VariantStream *vs = NULL;
2355 for (i = 0; i < hls->nb_varstreams; i++) {
2356 vs = &hls->var_streams[i];
2359 vtt_oc = vs->vtt_avf;
2360 old_filename = av_strdup(vs->avf->url);
2362 if (!old_filename) {
2363 return AVERROR(ENOMEM);
2365 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2366 int range_length = 0;
2367 if (!vs->init_range_length) {
2368 uint8_t *buffer = NULL;
2369 int range_length, byterange_mode;
2370 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2373 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2374 avio_write(vs->out, buffer, range_length);
2376 vs->init_range_length = range_length;
2377 avio_open_dyn_buf(&oc->pb);
2378 vs->packets_written = 0;
2379 vs->start_pos = range_length;
2380 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2381 if (!byterange_mode) {
2382 ff_format_io_close(s, &vs->out);
2383 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2386 if (!(hls->flags & HLS_SINGLE_FILE)) {
2387 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2389 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2392 write_styp(vs->out);
2394 ret = flush_dynbuf(vs, &range_length);
2398 vs->size = range_length;
2399 ff_format_io_close(s, &vs->out);
2403 av_write_trailer(oc);
2405 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2406 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2408 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2409 ff_format_io_close(s, &oc->pb);
2411 // rename that segment from .tmp to the real one
2412 if (use_temp_file && oc->url[0] && !(hls->flags & HLS_SINGLE_FILE)) {
2413 hls_rename_temp_file(s, oc);
2414 av_free(old_filename);
2415 old_filename = av_strdup(vs->avf->url);
2417 if (!old_filename) {
2418 return AVERROR(ENOMEM);
2422 /* after av_write_trailer, then duration + 1 duration per packet */
2423 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2426 sls_flag_file_rename(hls, vs, old_filename);
2430 av_write_trailer(vtt_oc);
2431 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2432 ff_format_io_close(s, &vtt_oc->pb);
2434 av_freep(&vs->basename);
2435 av_freep(&vs->base_output_dirname);
2436 avformat_free_context(oc);
2439 hls_window(s, 1, vs);
2441 av_freep(&vs->fmp4_init_filename);
2443 av_freep(&vs->vtt_basename);
2444 av_freep(&vs->vtt_m3u8_name);
2445 avformat_free_context(vtt_oc);
2448 hls_free_segments(vs->segments);
2449 hls_free_segments(vs->old_segments);
2450 av_free(old_filename);
2451 av_freep(&vs->m3u8_name);
2452 av_freep(&vs->streams);
2453 av_freep(&vs->agroup);
2454 av_freep(&vs->ccgroup);
2455 av_freep(&vs->baseurl);
2458 for (i = 0; i < hls->nb_ccstreams; i++) {
2459 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2460 av_freep(&ccs->ccgroup);
2461 av_freep(&ccs->instreamid);
2462 av_freep(&ccs->language);
2465 ff_format_io_close(s, &hls->m3u8_out);
2466 ff_format_io_close(s, &hls->sub_m3u8_out);
2467 av_freep(&hls->key_basename);
2468 av_freep(&hls->var_streams);
2469 av_freep(&hls->cc_streams);
2470 av_freep(&hls->master_m3u8_url);
2475 static int hls_init(AVFormatContext *s)
2480 HLSContext *hls = s->priv_data;
2481 const char *pattern = "%d.ts";
2482 VariantStream *vs = NULL;
2483 int basename_size = 0;
2484 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2485 const char *vtt_pattern = "%d.vtt";
2487 int vtt_basename_size = 0;
2488 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2490 ret = update_variant_stream_info(s);
2492 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2496 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2497 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2498 ret = AVERROR(EINVAL);
2499 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2503 ret = validate_name(hls->nb_varstreams, s->url);
2507 if (hls->segment_filename) {
2508 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2513 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2514 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2519 if (hls->subtitle_filename) {
2520 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2525 if (hls->master_pl_name) {
2526 ret = update_master_pl_info(s);
2528 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2534 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2537 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2538 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2539 time_t t = time(NULL); // we will need it in either case
2540 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2541 hls->start_sequence = (int64_t)t;
2542 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2544 struct tm *p, tmbuf;
2545 if (!(p = localtime_r(&t, &tmbuf)))
2546 return AVERROR(ENOMEM);
2547 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2548 return AVERROR(ENOMEM);
2549 hls->start_sequence = strtoll(b, NULL, 10);
2551 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2554 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2555 for (i = 0; i < hls->nb_varstreams; i++) {
2556 vs = &hls->var_streams[i];
2558 vs->m3u8_name = av_strdup(s->url);
2559 if (!vs->m3u8_name ) {
2560 ret = AVERROR(ENOMEM);
2563 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2567 vs->sequence = hls->start_sequence;
2568 vs->start_pts = AV_NOPTS_VALUE;
2569 vs->end_pts = AV_NOPTS_VALUE;
2570 vs->current_segment_final_filename_fmt[0] = '\0';
2572 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2573 // Independent segments cannot be guaranteed when splitting by time
2574 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2575 av_log(s, AV_LOG_WARNING,
2576 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2577 "Disabling 'independent_segments' flag\n");
2580 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2583 vs->initial_prog_date_time = now0;
2585 if (hls->format_options_str) {
2586 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2588 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2593 for (j = 0; j < vs->nb_streams; j++) {
2594 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2595 /* Get one video stream to reference for split segments
2596 * so use the first video stream index. */
2597 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2598 vs->reference_stream_index = vs->streams[j]->index;
2600 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2603 if (vs->has_video > 1)
2604 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2605 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2606 vs->oformat = av_guess_format("mp4", NULL, NULL);
2608 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2612 ret = AVERROR_MUXER_NOT_FOUND;
2616 if (vs->has_subtitle) {
2617 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2619 ret = AVERROR_MUXER_NOT_FOUND;
2623 if (hls->segment_filename) {
2624 basename_size = strlen(hls->segment_filename) + 1;
2625 vs->basename = av_malloc(basename_size);
2626 if (!vs->basename) {
2627 ret = AVERROR(ENOMEM);
2631 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2632 ret = format_name(vs->basename, basename_size, i);
2636 if (hls->flags & HLS_SINGLE_FILE) {
2637 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2644 if (hls->use_localtime) {
2645 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2647 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2650 vs->basename = av_malloc(basename_size);
2651 if (!vs->basename) {
2652 ret = AVERROR(ENOMEM);
2656 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2658 p = strrchr(vs->basename, '.');
2661 if (hls->use_localtime) {
2662 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2664 av_strlcat(vs->basename, pattern, basename_size);
2668 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2669 if (hls->nb_varstreams > 1)
2670 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2671 if (hls->flags & HLS_SINGLE_FILE) {
2672 vs->fmp4_init_filename = av_strdup(vs->basename);
2673 if (!vs->fmp4_init_filename) {
2674 ret = AVERROR(ENOMEM);
2678 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2679 if (!vs->fmp4_init_filename ) {
2680 ret = AVERROR(ENOMEM);
2683 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2684 fmp4_init_filename_len);
2685 if (hls->nb_varstreams > 1) {
2686 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2691 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2692 strlen(vs->fmp4_init_filename) + 1;
2694 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2695 if (!vs->base_output_dirname) {
2696 ret = AVERROR(ENOMEM);
2700 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2701 fmp4_init_filename_len);
2702 p = strrchr(vs->base_output_dirname, '/');
2705 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2706 fmp4_init_filename_len);
2708 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2709 fmp4_init_filename_len);
2714 if (!hls->use_localtime) {
2715 ret = sls_flag_check_duration_size_index(hls);
2720 ret = sls_flag_check_duration_size(hls, vs);
2725 if (vs->has_subtitle) {
2727 if (hls->flags & HLS_SINGLE_FILE)
2728 vtt_pattern = ".vtt";
2729 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2731 vs->vtt_basename = av_malloc(vtt_basename_size);
2732 if (!vs->vtt_basename) {
2733 ret = AVERROR(ENOMEM);
2736 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2737 if (!vs->vtt_m3u8_name ) {
2738 ret = AVERROR(ENOMEM);
2741 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2742 p = strrchr(vs->vtt_basename, '.');
2746 if ( hls->subtitle_filename ) {
2747 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2748 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2752 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2753 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2755 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2759 vs->baseurl = av_strdup(hls->baseurl);
2761 ret = AVERROR(ENOMEM);
2766 if ((ret = hls_mux_init(s, vs)) < 0)
2769 if (hls->flags & HLS_APPEND_LIST) {
2770 parse_playlist(s, vs->m3u8_name, vs);
2771 vs->discontinuity = 1;
2772 if (hls->init_time > 0) {
2773 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2774 " hls_init_time value will have no effect\n");
2776 hls->recording_time = hls->time * AV_TIME_BASE;
2780 if ((ret = hls_start(s, vs)) < 0)
2786 av_freep(&hls->key_basename);
2787 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2788 vs = &hls->var_streams[i];
2789 av_freep(&vs->basename);
2790 av_freep(&vs->vtt_basename);
2791 av_freep(&vs->fmp4_init_filename);
2792 av_freep(&vs->m3u8_name);
2793 av_freep(&vs->vtt_m3u8_name);
2794 av_freep(&vs->streams);
2795 av_freep(&vs->agroup);
2796 av_freep(&vs->ccgroup);
2797 av_freep(&vs->baseurl);
2799 avformat_free_context(vs->avf);
2801 avformat_free_context(vs->vtt_avf);
2803 for (i = 0; i < hls->nb_ccstreams; i++) {
2804 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2805 av_freep(&ccs->ccgroup);
2806 av_freep(&ccs->instreamid);
2807 av_freep(&ccs->language);
2809 av_freep(&hls->var_streams);
2810 av_freep(&hls->cc_streams);
2811 av_freep(&hls->master_m3u8_url);
2817 #define OFFSET(x) offsetof(HLSContext, x)
2818 #define E AV_OPT_FLAG_ENCODING_PARAM
2819 static const AVOption options[] = {
2820 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2821 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2822 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2823 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2824 {"hls_delete_threshold", "set number of unreferenced segments to keep before deleting", OFFSET(hls_delete_threshold), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, E},
2825 {"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},
2826 {"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},
2828 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2830 {"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},
2831 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2832 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2833 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2834 {"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},
2835 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2836 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2837 {"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},
2838 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2839 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2840 {"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"},
2841 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2842 {"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"},
2843 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2844 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2845 {"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"},
2846 {"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"},
2847 {"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"},
2848 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2849 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2850 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2851 {"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"},
2852 {"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"},
2853 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2854 {"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"},
2855 {"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"},
2856 {"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"},
2857 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2858 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2859 #if FF_API_HLS_USE_LOCALTIME
2860 {"use_localtime", "set filename expansion with strftime at segment creation(will be deprecated )", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2862 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2863 #if FF_API_HLS_USE_LOCALTIME
2864 {"use_localtime_mkdir", "create last directory component in strftime-generated filename(will be deprecated)", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2866 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2867 {"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" },
2868 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2869 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2870 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2871 {"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" },
2872 {"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" },
2873 {"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" },
2874 {"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" },
2875 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2876 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2877 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2878 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2879 {"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},
2880 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2881 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2885 static const AVClass hls_class = {
2886 .class_name = "hls muxer",
2887 .item_name = av_default_item_name,
2889 .version = LIBAVUTIL_VERSION_INT,
2893 AVOutputFormat ff_hls_muxer = {
2895 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2896 .extensions = "m3u8",
2897 .priv_data_size = sizeof(HLSContext),
2898 .audio_codec = AV_CODEC_ID_AAC,
2899 .video_codec = AV_CODEC_ID_H264,
2900 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2901 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2903 .write_header = hls_write_header,
2904 .write_packet = hls_write_packet,
2905 .write_trailer = hls_write_trailer,
2906 .priv_class = &hls_class,