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;
230 int ignore_io_errors;
233 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
234 AVDictionary **options) {
235 HLSContext *hls = s->priv_data;
236 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
237 int err = AVERROR_MUXER_NOT_FOUND;
238 if (!*pb || !http_base_proto || !hls->http_persistent) {
239 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
240 #if CONFIG_HTTP_PROTOCOL
242 URLContext *http_url_context = ffio_geturlcontext(*pb);
243 av_assert0(http_url_context);
244 err = ff_http_do_new_request(http_url_context, filename);
246 ff_format_io_close(s, pb);
253 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
254 HLSContext *hls = s->priv_data;
255 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
258 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
259 ff_format_io_close(s, pb);
260 #if CONFIG_HTTP_PROTOCOL
262 URLContext *http_url_context = ffio_geturlcontext(*pb);
263 av_assert0(http_url_context);
265 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
270 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
272 int http_base_proto = ff_is_http_proto(s->url);
275 av_dict_set(options, "method", c->method, 0);
276 } else if (http_base_proto) {
277 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
278 av_dict_set(options, "method", "PUT", 0);
281 av_dict_set(options, "user_agent", c->user_agent, 0);
282 if (c->http_persistent)
283 av_dict_set_int(options, "multiple_requests", 1, 0);
285 av_dict_set_int(options, "timeout", c->timeout, 0);
288 static void write_codec_attr(AVStream *st, VariantStream *vs) {
289 int codec_strlen = strlen(vs->codec_attr);
292 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
294 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
297 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
298 uint8_t *data = st->codecpar->extradata;
299 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
300 snprintf(attr, sizeof(attr),
301 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
305 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
306 snprintf(attr, sizeof(attr), "mp4a.40.33");
307 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
308 snprintf(attr, sizeof(attr), "mp4a.40.34");
309 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
310 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
311 snprintf(attr, sizeof(attr), "mp4a.40.2");
312 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
313 snprintf(attr, sizeof(attr), "ac-3");
314 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
315 snprintf(attr, sizeof(attr), "ec-3");
319 // Don't write the same attribute multiple times
320 if (!av_stristr(vs->codec_attr, attr)) {
321 snprintf(vs->codec_attr + codec_strlen,
322 sizeof(vs->codec_attr) - codec_strlen,
323 "%s%s", codec_strlen ? "," : "", attr);
328 vs->codec_attr[0] = '\0';
329 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
333 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
338 int nd, addchar_count;
342 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
349 if (c == '%' && *(p+1) == '%') // %%
351 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
354 while (av_isdigit(*(p + addchar_count))) {
355 nd = nd * 10 + *(p + addchar_count) - '0';
359 if (*(p + addchar_count) == placeholder) {
360 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
361 p += (addchar_count + 1);
369 av_bprint_append_data(&buf, p, addchar_count);
372 if (!av_bprint_is_complete(&buf)) {
373 av_bprint_finalize(&buf, NULL);
376 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
382 static void write_styp(AVIOContext *pb)
385 ffio_wfourcc(pb, "styp");
386 ffio_wfourcc(pb, "msdh");
387 avio_wb32(pb, 0); /* minor */
388 ffio_wfourcc(pb, "msdh");
389 ffio_wfourcc(pb, "msix");
392 static int flush_dynbuf(VariantStream *vs, int *range_length)
394 AVFormatContext *ctx = vs->avf;
398 return AVERROR(EINVAL);
402 av_write_frame(ctx, NULL);
406 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
408 avio_write(vs->out, buffer, *range_length);
412 return avio_open_dyn_buf(&ctx->pb);
415 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
418 HLSSegment *segment, *previous_segment = NULL;
419 float playlist_duration = 0.0f;
420 int ret = 0, path_size, sub_path_size;
422 char *dirname = NULL, *p, *sub_path;
424 char *vtt_dirname = NULL;
425 AVDictionary *options = NULL;
426 AVIOContext *out = NULL;
427 const char *proto = NULL;
429 segment = vs->segments;
431 playlist_duration += segment->duration;
432 segment = segment->next;
435 segment = vs->old_segments;
438 playlist_duration -= segment->duration;
439 previous_segment = segment;
440 segment = previous_segment->next;
442 if (playlist_duration <= -previous_segment->duration) {
443 previous_segment->next = NULL;
446 if (segment_cnt >= hls->hls_delete_threshold) {
447 previous_segment->next = NULL;
452 if (segment && !hls->use_localtime_mkdir) {
453 if (hls->segment_filename) {
454 dirname = av_strdup(hls->segment_filename);
456 dirname = av_strdup(vs->avf->url);
459 ret = AVERROR(ENOMEM);
462 p = (char *)av_basename(dirname);
468 char * r_dirname = dirname;
470 /* if %v is present in the file's directory */
471 if (dirname && av_stristr(dirname, "%v")) {
473 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
474 ret = AVERROR(EINVAL);
481 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
483 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
484 path = av_malloc(path_size);
486 ret = AVERROR(ENOMEM);
490 if (hls->use_localtime_mkdir)
491 av_strlcpy(path, segment->filename, path_size);
492 else { // segment->filename contains basename only
493 av_strlcpy(path, dirname, path_size);
494 av_strlcat(path, segment->filename, path_size);
497 proto = avio_find_protocol_name(s->url);
498 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
499 av_dict_set(&options, "method", "DELETE", 0);
500 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
501 if (hls->ignore_io_errors)
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 vtt_dirname = av_strdup(vs->vtt_avf->url);
514 ret = AVERROR(ENOMEM);
517 p = (char *)av_basename(vtt_dirname);
519 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
520 sub_path = av_malloc(sub_path_size);
522 ret = AVERROR(ENOMEM);
526 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
527 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
529 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
530 av_dict_set(&options, "method", "DELETE", 0);
531 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
532 if (hls->ignore_io_errors)
537 ff_format_io_close(vs->vtt_avf, &out);
538 } else if (unlink(sub_path) < 0) {
539 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
540 sub_path, strerror(errno));
545 previous_segment = segment;
546 segment = previous_segment->next;
547 av_free(previous_segment);
553 av_free(vtt_dirname);
558 static int randomize(uint8_t *buf, int len)
561 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
564 if (RAND_bytes(buf, len))
567 return AVERROR(ENOSYS);
569 return AVERROR(EINVAL);
572 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
574 HLSContext *hls = s->priv_data;
578 uint8_t key[KEYSIZE];
580 len = strlen(s->url) + 4 + 1;
581 hls->key_basename = av_mallocz(len);
582 if (!hls->key_basename)
583 return AVERROR(ENOMEM);
585 av_strlcpy(hls->key_basename, s->url, len);
586 av_strlcat(hls->key_basename, ".key", len);
589 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
590 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
592 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
593 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
596 if (!*hls->iv_string) {
597 uint8_t iv[16] = { 0 };
601 AV_WB64(iv + 8, vs->sequence);
603 memcpy(iv, hls->iv, sizeof(iv));
605 ff_data_to_hex(buf, iv, sizeof(iv), 0);
607 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
610 if (!*hls->key_uri) {
611 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
612 return AVERROR(EINVAL);
615 if (!*hls->key_file) {
616 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
617 return AVERROR(EINVAL);
620 if (!*hls->key_string) {
622 if ((ret = randomize(key, sizeof(key))) < 0) {
623 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
627 memcpy(key, hls->key, sizeof(key));
630 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
631 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
633 avio_seek(pb, 0, SEEK_CUR);
634 avio_write(pb, key, KEYSIZE);
641 static int hls_encryption_start(AVFormatContext *s)
643 HLSContext *hls = s->priv_data;
646 uint8_t key[KEYSIZE];
648 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
649 av_log(hls, AV_LOG_ERROR,
650 "error opening key info file %s\n", hls->key_info_file);
654 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
655 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
657 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
658 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
660 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
661 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
663 ff_format_io_close(s, &pb);
665 if (!*hls->key_uri) {
666 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
667 return AVERROR(EINVAL);
670 if (!*hls->key_file) {
671 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
672 return AVERROR(EINVAL);
675 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
676 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
680 ret = avio_read(pb, key, sizeof(key));
681 ff_format_io_close(s, &pb);
682 if (ret != sizeof(key)) {
683 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
684 if (ret >= 0 || ret == AVERROR_EOF)
685 ret = AVERROR(EINVAL);
688 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
693 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
695 AVDictionary *options = NULL;
696 HLSContext *hls = s->priv_data;
698 AVFormatContext *vtt_oc = NULL;
699 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
702 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
707 oc->url = av_strdup("");
709 return AVERROR(ENOMEM);
711 oc->oformat = vs->oformat;
712 oc->interrupt_callback = s->interrupt_callback;
713 oc->max_delay = s->max_delay;
714 oc->opaque = s->opaque;
715 oc->io_open = s->io_open;
716 oc->io_close = s->io_close;
717 av_dict_copy(&oc->metadata, s->metadata, 0);
719 if(vs->vtt_oformat) {
720 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
723 vtt_oc = vs->vtt_avf;
724 vtt_oc->oformat = vs->vtt_oformat;
725 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
728 for (i = 0; i < vs->nb_streams; i++) {
730 AVFormatContext *loc;
731 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
736 if (!(st = avformat_new_stream(loc, NULL)))
737 return AVERROR(ENOMEM);
738 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
739 if (!oc->oformat->codec_tag ||
740 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
741 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
742 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
744 st->codecpar->codec_tag = 0;
747 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
748 st->time_base = vs->streams[i]->time_base;
749 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
752 vs->packets_written = 1;
756 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
757 if (hls->max_seg_size > 0) {
758 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
759 return AVERROR_PATCHWELCOME;
762 vs->packets_written = 0;
763 vs->init_range_length = 0;
764 set_http_options(s, &options, hls);
765 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
768 if (byterange_mode) {
769 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
771 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
773 av_dict_free(&options);
775 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
779 if (hls->format_options_str) {
780 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
782 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
783 hls->format_options_str);
788 av_dict_copy(&options, hls->format_options, 0);
789 av_dict_set(&options, "fflags", "-autobsf", 0);
790 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
791 ret = avformat_init_output(oc, &options);
794 if (av_dict_count(options)) {
795 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
796 av_dict_free(&options);
797 return AVERROR(EINVAL);
800 av_dict_free(&options);
805 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
808 if (!av_strcasecmp(segment->filename,filename))
810 segment = segment->next;
812 return (HLSSegment *) NULL;
815 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
816 VariantStream *vs, HLSSegment *en,
817 double duration, int64_t pos, int64_t size)
819 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
820 strlen(vs->current_segment_final_filename_fmt)) {
821 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
824 return AVERROR(ENOMEM);
826 ff_format_set_url(vs->avf, new_url);
827 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
828 char *filename = NULL;
829 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
830 av_log(hls, AV_LOG_ERROR,
831 "Invalid second level segment filename template '%s', "
832 "you can try to remove second_level_segment_size flag\n",
836 return AVERROR(EINVAL);
838 ff_format_set_url(vs->avf, filename);
840 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
841 char *filename = NULL;
842 if (replace_int_data_in_filename(&filename, vs->avf->url,
843 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
844 av_log(hls, AV_LOG_ERROR,
845 "Invalid second level segment filename template '%s', "
846 "you can try to remove second_level_segment_time flag\n",
850 return AVERROR(EINVAL);
852 ff_format_set_url(vs->avf, filename);
858 static int sls_flag_check_duration_size_index(HLSContext *hls)
862 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
863 av_log(hls, AV_LOG_ERROR,
864 "second_level_segment_duration hls_flag requires strftime to be true\n");
865 ret = AVERROR(EINVAL);
867 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
868 av_log(hls, AV_LOG_ERROR,
869 "second_level_segment_size hls_flag requires strfime to be true\n");
870 ret = AVERROR(EINVAL);
872 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
873 av_log(hls, AV_LOG_ERROR,
874 "second_level_segment_index hls_flag requires strftime to be true\n");
875 ret = AVERROR(EINVAL);
881 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
883 const char *proto = avio_find_protocol_name(vs->basename);
884 int segment_renaming_ok = proto && !strcmp(proto, "file");
887 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
888 av_log(hls, AV_LOG_ERROR,
889 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
890 ret = AVERROR(EINVAL);
892 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
893 av_log(hls, AV_LOG_ERROR,
894 "second_level_segment_size hls_flag works only with file protocol segment names\n");
895 ret = AVERROR(EINVAL);
901 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
902 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
903 strlen(vs->current_segment_final_filename_fmt)) {
904 ff_rename(old_filename, vs->avf->url, hls);
908 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
910 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
911 char *filename = NULL;
912 if (replace_int_data_in_filename(&filename,
914 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
916 oc->url, 'd', vs->sequence) < 1) {
918 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
919 "you can try to remove second_level_segment_index flag\n",
922 return AVERROR(EINVAL);
924 ff_format_set_url(oc, filename);
926 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
927 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
928 sizeof(vs->current_segment_final_filename_fmt));
929 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
930 char *filename = NULL;
931 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
932 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
933 "you can try to remove second_level_segment_size flag\n",
936 return AVERROR(EINVAL);
938 ff_format_set_url(oc, filename);
940 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
941 char *filename = NULL;
942 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
943 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
944 "you can try to remove second_level_segment_time flag\n",
947 return AVERROR(EINVAL);
949 ff_format_set_url(oc, filename);
955 /* Create a new segment and append it to the segment list */
956 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
957 VariantStream *vs, double duration, int64_t pos,
960 HLSSegment *en = av_malloc(sizeof(*en));
961 const char *filename;
962 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
966 return AVERROR(ENOMEM);
968 en->var_stream_idx = vs->var_stream_idx;
969 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
974 filename = av_basename(vs->avf->url);
976 if (hls->use_localtime_mkdir) {
977 filename = vs->avf->url;
979 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
980 && !byterange_mode) {
981 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
983 av_strlcpy(en->filename, filename, sizeof(en->filename));
986 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
988 en->sub_filename[0] = '\0';
990 en->duration = duration;
996 if (vs->discontinuity) {
998 vs->discontinuity = 0;
1001 if (hls->key_info_file || hls->encrypt) {
1002 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1003 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1009 vs->last_segment->next = en;
1011 vs->last_segment = en;
1013 // EVENT or VOD playlists imply sliding window cannot be used
1014 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1015 hls->max_nb_segments = 0;
1017 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1019 vs->initial_prog_date_time += en->duration;
1020 vs->segments = en->next;
1021 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1023 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1025 !(hls->flags & HLS_SINGLE_FILE)) {
1027 en->next = vs->old_segments;
1028 vs->old_segments = en;
1029 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1036 if (hls->max_seg_size > 0) {
1044 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1046 HLSContext *hls = s->priv_data;
1048 int ret = 0, is_segment = 0;
1049 int64_t new_start_pos;
1054 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1055 &s->interrupt_callback, NULL,
1056 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1059 ff_get_chomp_line(in, line, sizeof(line));
1060 if (strcmp(line, "#EXTM3U")) {
1061 ret = AVERROR_INVALIDDATA;
1065 vs->discontinuity = 0;
1066 while (!avio_feof(in)) {
1067 ff_get_chomp_line(in, line, sizeof(line));
1068 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1069 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1070 if (tmp_sequence < vs->sequence)
1071 av_log(hls, AV_LOG_VERBOSE,
1072 "Found playlist sequence number was smaller """
1073 "than specified start sequence number: %"PRId64" < %"PRId64", "
1074 "omitting\n", tmp_sequence, hls->start_sequence);
1076 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1077 vs->sequence = tmp_sequence;
1079 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1081 vs->discontinuity = 1;
1082 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1084 vs->duration = atof(ptr);
1085 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1086 ptr = av_stristr(line, "URI=\"");
1088 ptr += strlen("URI=\"");
1089 end = av_stristr(ptr, ",");
1091 av_strlcpy(hls->key_uri, ptr, end - ptr);
1093 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1097 ptr = av_stristr(line, "IV=0x");
1099 ptr += strlen("IV=0x");
1100 end = av_stristr(ptr, ",");
1102 av_strlcpy(hls->iv_string, ptr, end - ptr);
1104 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1108 } else if (av_strstart(line, "#", NULL)) {
1110 } else if (line[0]) {
1112 char *new_file = av_strdup(line);
1114 ret = AVERROR(ENOMEM);
1117 ff_format_set_url(vs->avf, new_file);
1119 new_start_pos = avio_tell(vs->avf->pb);
1120 vs->size = new_start_pos - vs->start_pos;
1121 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1124 vs->start_pos = new_start_pos;
1134 static void hls_free_segments(HLSSegment *p)
1145 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1147 size_t len = strlen(oc->url);
1148 char *final_filename = av_strdup(oc->url);
1151 if (!final_filename)
1152 return AVERROR(ENOMEM);
1153 final_filename[len-4] = '\0';
1154 ret = ff_rename(oc->url, final_filename, s);
1155 oc->url[len-4] = '\0';
1156 av_freep(&final_filename);
1160 static int get_relative_url(const char *master_url, const char *media_url,
1161 char *rel_url, int rel_url_buf_size)
1165 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1166 strrchr(master_url, '\\');
1168 base_len = FFABS(p - master_url);
1169 if (av_strncasecmp(master_url, media_url, base_len)) {
1170 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1171 return AVERROR(EINVAL);
1174 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1178 static int64_t get_stream_bit_rate(AVStream *stream) {
1179 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1181 AV_PKT_DATA_CPB_PROPERTIES,
1185 if (stream->codecpar->bit_rate)
1186 return stream->codecpar->bit_rate;
1188 return props->max_bitrate;
1193 static int create_master_playlist(AVFormatContext *s,
1194 VariantStream * const input_vs)
1196 HLSContext *hls = s->priv_data;
1197 VariantStream *vs, *temp_vs;
1198 AVStream *vid_st, *aud_st;
1199 AVDictionary *options = NULL;
1201 int m3u8_name_size, ret, bandwidth;
1202 char *m3u8_rel_name, *ccgroup;
1203 ClosedCaptionsStream *ccs;
1205 input_vs->m3u8_created = 1;
1206 if (!hls->master_m3u8_created) {
1207 /* For the first time, wait until all the media playlists are created */
1208 for (i = 0; i < hls->nb_varstreams; i++)
1209 if (!hls->var_streams[i].m3u8_created)
1212 /* Keep publishing the master playlist at the configured rate */
1213 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1214 input_vs->number % hls->master_publish_rate)
1218 set_http_options(s, &options, hls);
1220 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1221 av_dict_free(&options);
1223 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1224 hls->master_m3u8_url);
1228 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1230 for (i = 0; i < hls->nb_ccstreams; i++) {
1231 ccs = &(hls->cc_streams[i]);
1232 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1233 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1234 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1236 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1237 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1240 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1241 for (i = 0; i < hls->nb_varstreams; i++) {
1242 vs = &(hls->var_streams[i]);
1244 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1247 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1248 m3u8_rel_name = av_malloc(m3u8_name_size);
1249 if (!m3u8_rel_name) {
1250 ret = AVERROR(ENOMEM);
1253 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1254 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1255 m3u8_rel_name, m3u8_name_size);
1257 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1261 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1263 av_freep(&m3u8_rel_name);
1266 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1267 for (i = 0; i < hls->nb_varstreams; i++) {
1268 vs = &(hls->var_streams[i]);
1270 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1271 m3u8_rel_name = av_malloc(m3u8_name_size);
1272 if (!m3u8_rel_name) {
1273 ret = AVERROR(ENOMEM);
1276 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1277 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1278 m3u8_rel_name, m3u8_name_size);
1280 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1286 for (j = 0; j < vs->nb_streams; j++) {
1287 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1288 vid_st = vs->streams[j];
1289 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1290 aud_st = vs->streams[j];
1293 if (!vid_st && !aud_st) {
1294 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1299 * Traverse through the list of audio only rendition streams and find
1300 * the rendition which has highest bitrate in the same audio group
1303 for (j = 0; j < hls->nb_varstreams; j++) {
1304 temp_vs = &(hls->var_streams[j]);
1305 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1307 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1309 aud_st = temp_vs->streams[0];
1310 if (temp_vs->streams[0]->codecpar->bit_rate >
1311 aud_st->codecpar->bit_rate)
1312 aud_st = temp_vs->streams[0];
1319 bandwidth += get_stream_bit_rate(vid_st);
1321 bandwidth += get_stream_bit_rate(aud_st);
1322 bandwidth += bandwidth / 10;
1325 if (vid_st && vs->ccgroup) {
1326 /* check if this group name is available in the cc map string */
1327 for (j = 0; j < hls->nb_ccstreams; j++) {
1328 ccs = &(hls->cc_streams[j]);
1329 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1330 ccgroup = vs->ccgroup;
1334 if (j == hls->nb_ccstreams)
1335 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1339 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1340 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1342 av_freep(&m3u8_rel_name);
1346 hls->master_m3u8_created = 1;
1347 av_freep(&m3u8_rel_name);
1348 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1352 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1354 HLSContext *hls = s->priv_data;
1356 int target_duration = 0;
1358 char temp_filename[1024];
1359 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1360 const char *proto = avio_find_protocol_name(s->url);
1361 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1362 static unsigned warned_non_file;
1363 char *key_uri = NULL;
1364 char *iv_string = NULL;
1365 AVDictionary *options = NULL;
1366 double prog_date_time = vs->initial_prog_date_time;
1367 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1368 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1371 if (byterange_mode) {
1376 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1380 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1384 if (!use_temp_file && !warned_non_file++)
1385 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1387 set_http_options(s, &options, hls);
1388 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1389 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0) {
1390 if (hls->ignore_io_errors)
1395 for (en = vs->segments; en; en = en->next) {
1396 if (target_duration <= en->duration)
1397 target_duration = lrint(en->duration);
1400 vs->discontinuity_set = 0;
1401 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1402 target_duration, sequence, hls->pl_type);
1404 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1405 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1406 vs->discontinuity_set = 1;
1408 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1409 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1411 for (en = vs->segments; en; en = en->next) {
1412 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1413 av_strcasecmp(en->iv_string, iv_string))) {
1414 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1416 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1417 avio_printf(hls->m3u8_out, "\n");
1418 key_uri = en->key_uri;
1419 iv_string = en->iv_string;
1422 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1423 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1424 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1427 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1428 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1429 en->size, en->pos, vs->baseurl,
1430 en->filename, prog_date_time_p);
1432 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1436 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1437 ff_hls_write_end_list(hls->m3u8_out);
1439 if( vs->vtt_m3u8_name ) {
1440 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0) {
1441 if (hls->ignore_io_errors)
1445 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1446 target_duration, sequence, PLAYLIST_TYPE_NONE);
1447 for (en = vs->segments; en; en = en->next) {
1448 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1449 en->duration, 0, en->size, en->pos,
1450 vs->baseurl, en->sub_filename, NULL);
1452 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1457 ff_hls_write_end_list(hls->sub_m3u8_out);
1462 av_dict_free(&options);
1463 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1464 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1466 ff_rename(temp_filename, vs->m3u8_name, s);
1467 if (ret >= 0 && hls->master_pl_name)
1468 if (create_master_playlist(s, vs) < 0)
1469 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1474 static int hls_start(AVFormatContext *s, VariantStream *vs)
1476 HLSContext *c = s->priv_data;
1477 AVFormatContext *oc = vs->avf;
1478 AVFormatContext *vtt_oc = vs->vtt_avf;
1479 AVDictionary *options = NULL;
1480 const char *proto = avio_find_protocol_name(s->url);
1481 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1482 char *filename, iv_string[KEYSIZE*2 + 1];
1485 if (c->flags & HLS_SINGLE_FILE) {
1486 char *new_name = av_strdup(vs->basename);
1488 return AVERROR(ENOMEM);
1489 ff_format_set_url(oc, new_name);
1490 if (vs->vtt_basename) {
1491 new_name = av_strdup(vs->vtt_basename);
1493 return AVERROR(ENOMEM);
1494 ff_format_set_url(vtt_oc, new_name);
1496 } else if (c->max_seg_size > 0) {
1497 char *filename = NULL;
1498 if (replace_int_data_in_filename(&filename,
1500 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1502 vs->basename, 'd', vs->sequence) < 1) {
1505 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1506 return AVERROR(EINVAL);
1508 ff_format_set_url(oc, filename);
1510 if (c->use_localtime) {
1512 struct tm *tm, tmpbuf;
1513 int bufsize = strlen(vs->basename) + 1024;
1514 char *buf = av_mallocz(bufsize);
1516 return AVERROR(ENOMEM);
1518 tm = localtime_r(&now0, &tmpbuf);
1519 ff_format_set_url(oc, buf);
1520 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1521 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1522 return AVERROR(EINVAL);
1525 err = sls_flag_use_localtime_filename(oc, c, vs);
1527 return AVERROR(ENOMEM);
1530 if (c->use_localtime_mkdir) {
1532 char *fn_copy = av_strdup(oc->url);
1534 return AVERROR(ENOMEM);
1536 dir = av_dirname(fn_copy);
1537 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1538 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1540 return AVERROR(errno);
1545 char *filename = NULL;
1546 if (replace_int_data_in_filename(&filename,
1548 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1550 vs->basename, 'd', vs->sequence) < 1) {
1553 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1554 return AVERROR(EINVAL);
1556 ff_format_set_url(oc, filename);
1558 if( vs->vtt_basename) {
1559 char *filename = NULL;
1560 if (replace_int_data_in_filename(&filename,
1562 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1564 vs->vtt_basename, 'd', vs->sequence) < 1) {
1567 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1568 return AVERROR(EINVAL);
1570 ff_format_set_url(vtt_oc, filename);
1575 set_http_options(s, &options, c);
1577 if (use_temp_file) {
1578 char *new_name = av_asprintf("%s.tmp", oc->url);
1580 return AVERROR(ENOMEM);
1581 ff_format_set_url(oc, new_name);
1584 if (c->key_info_file || c->encrypt) {
1585 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1586 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1587 return AVERROR_PATCHWELCOME;
1590 if (c->key_info_file && c->encrypt) {
1591 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1592 " ignoring -hls_enc\n");
1595 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1596 if (c->key_info_file) {
1597 if ((err = hls_encryption_start(s)) < 0)
1600 if ((err = do_encrypt(s, vs)) < 0)
1603 c->encrypt_started = 1;
1605 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1608 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1610 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1611 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1614 filename = av_asprintf("crypto:%s", oc->url);
1616 err = AVERROR(ENOMEM);
1619 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1621 av_dict_free(&options);
1624 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1625 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0) {
1626 if (c->ignore_io_errors)
1631 if (vs->vtt_basename) {
1632 set_http_options(s, &options, c);
1633 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1634 if (c->ignore_io_errors)
1639 av_dict_free(&options);
1641 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1642 /* We only require one PAT/PMT per segment. */
1643 if (oc->oformat->priv_class && oc->priv_data) {
1646 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1648 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1649 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1650 av_opt_set(oc->priv_data, "pat_period", period, 0);
1654 if (vs->vtt_basename) {
1655 err = avformat_write_header(vtt_oc,NULL);
1662 av_dict_free(&options);
1667 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1670 time_t t = time(NULL);
1671 struct tm *p, tmbuf;
1672 HLSContext *hls = s->priv_data;
1674 p = localtime_r(&t, &tmbuf);
1675 // no %s support when strftime returned error or left format string unchanged
1676 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1677 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1678 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1680 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1683 static int append_postfix(char *name, int name_buf_len, int i)
1686 char extension[10] = {'\0'};
1688 p = strrchr(name, '.');
1690 av_strlcpy(extension, p, sizeof(extension));
1694 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1696 if (strlen(extension))
1697 av_strlcat(name, extension, name_buf_len);
1702 static int validate_name(int nb_vs, const char *fn)
1704 const char *filename, *subdir_name;
1705 char *fn_dup = NULL;
1709 ret = AVERROR(EINVAL);
1713 fn_dup = av_strdup(fn);
1715 ret = AVERROR(ENOMEM);
1719 filename = av_basename(fn);
1720 subdir_name = av_dirname(fn_dup);
1722 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1723 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1725 ret = AVERROR(EINVAL);
1729 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1730 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1732 ret = AVERROR(EINVAL);
1741 static int format_name(char *buf, int buf_len, int index)
1743 const char *proto, *dir;
1744 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1747 if (!av_stristr(buf, "%v"))
1750 orig_buf_dup = av_strdup(buf);
1751 if (!orig_buf_dup) {
1752 ret = AVERROR(ENOMEM);
1756 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1757 ret = AVERROR(EINVAL);
1760 av_strlcpy(buf, mod_buf, buf_len);
1762 proto = avio_find_protocol_name(orig_buf_dup);
1763 dir = av_dirname(orig_buf_dup);
1765 /* if %v is present in the file's directory, create sub-directory */
1766 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1767 mod_buf_dup = av_strdup(buf);
1769 ret = AVERROR(ENOMEM);
1773 dir = av_dirname(mod_buf_dup);
1774 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1775 ret = AVERROR(errno);
1781 av_freep(&orig_buf_dup);
1782 av_freep(&mod_buf_dup);
1787 static int get_nth_codec_stream_index(AVFormatContext *s,
1788 enum AVMediaType codec_type,
1791 unsigned int stream_index, cnt;
1792 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1795 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1796 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1798 if (cnt == stream_id)
1799 return stream_index;
1805 static int parse_variant_stream_mapstring(AVFormatContext *s)
1807 HLSContext *hls = s->priv_data;
1810 enum AVMediaType codec_type;
1811 int nb_varstreams, nb_streams;
1812 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1816 * Expected format for var_stream_map string is as below:
1818 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1819 * This string specifies how to group the audio, video and subtitle streams
1820 * into different variant streams. The variant stream groups are separated
1823 * a:, v:, s: are keys to specify audio, video and subtitle streams
1824 * respectively. Allowed values are 0 to 9 digits (limited just based on
1827 * agroup: is key to specify audio group. A string can be given as value.
1829 p = av_strdup(hls->var_stream_map);
1831 while(av_strtok(q, " \t", &saveptr1)) {
1833 hls->nb_varstreams++;
1837 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1838 if (!hls->var_streams)
1839 return AVERROR(ENOMEM);
1841 p = hls->var_stream_map;
1843 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1846 if (nb_varstreams < hls->nb_varstreams) {
1847 vs = &(hls->var_streams[nb_varstreams]);
1848 vs->var_stream_idx = nb_varstreams;
1851 return AVERROR(EINVAL);
1854 while (q < varstr + strlen(varstr)) {
1855 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1856 !av_strncasecmp(q, "s:", 2))
1860 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1862 return AVERROR(ENOMEM);
1865 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1868 if (av_strstart(keyval, "agroup:", &val)) {
1869 vs->agroup = av_strdup(val);
1871 return AVERROR(ENOMEM);
1873 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1874 vs->ccgroup = av_strdup(val);
1876 return AVERROR(ENOMEM);
1878 } else if (av_strstart(keyval, "v:", &val)) {
1879 codec_type = AVMEDIA_TYPE_VIDEO;
1880 } else if (av_strstart(keyval, "a:", &val)) {
1881 codec_type = AVMEDIA_TYPE_AUDIO;
1882 } else if (av_strstart(keyval, "s:", &val)) {
1883 codec_type = AVMEDIA_TYPE_SUBTITLE;
1885 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1886 return AVERROR(EINVAL);
1890 if (av_isdigit(*val))
1891 stream_index = get_nth_codec_stream_index (s, codec_type,
1894 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1895 vs->streams[nb_streams++] = s->streams[stream_index];
1897 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1898 return AVERROR(EINVAL);
1902 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1903 hls->nb_varstreams);
1908 static int parse_cc_stream_mapstring(AVFormatContext *s)
1910 HLSContext *hls = s->priv_data;
1912 char *p, *q, *ccstr, *keyval;
1913 char *saveptr1 = NULL, *saveptr2 = NULL;
1915 ClosedCaptionsStream *ccs;
1917 p = av_strdup(hls->cc_stream_map);
1919 while(av_strtok(q, " \t", &saveptr1)) {
1921 hls->nb_ccstreams++;
1925 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1926 if (!hls->cc_streams)
1927 return AVERROR(ENOMEM);
1929 p = hls->cc_stream_map;
1931 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1934 if (nb_ccstreams < hls->nb_ccstreams)
1935 ccs = &(hls->cc_streams[nb_ccstreams++]);
1937 return AVERROR(EINVAL);
1939 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1942 if (av_strstart(keyval, "ccgroup:", &val)) {
1943 ccs->ccgroup = av_strdup(val);
1945 return AVERROR(ENOMEM);
1946 } else if (av_strstart(keyval, "instreamid:", &val)) {
1947 ccs->instreamid = av_strdup(val);
1948 if (!ccs->instreamid)
1949 return AVERROR(ENOMEM);
1950 } else if (av_strstart(keyval, "language:", &val)) {
1951 ccs->language = av_strdup(val);
1953 return AVERROR(ENOMEM);
1955 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1956 return AVERROR(EINVAL);
1960 if (!ccs->ccgroup || !ccs->instreamid) {
1961 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1962 return AVERROR(EINVAL);
1965 if (av_strstart(ccs->instreamid, "CC", &val)) {
1966 if(atoi(val) < 1 || atoi(val) > 4) {
1967 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1968 atoi(val), ccs->instreamid);
1969 return AVERROR(EINVAL);
1971 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1972 if(atoi(val) < 1 || atoi(val) > 63) {
1973 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1974 atoi(val), ccs->instreamid);
1975 return AVERROR(EINVAL);
1978 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1980 return AVERROR(EINVAL);
1987 static int update_variant_stream_info(AVFormatContext *s) {
1988 HLSContext *hls = s->priv_data;
1992 if (hls->cc_stream_map) {
1993 ret = parse_cc_stream_mapstring(s);
1998 if (hls->var_stream_map) {
1999 return parse_variant_stream_mapstring(s);
2001 //By default, a single variant stream with all the codec streams is created
2002 hls->nb_varstreams = 1;
2003 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
2004 hls->nb_varstreams);
2005 if (!hls->var_streams)
2006 return AVERROR(ENOMEM);
2008 hls->var_streams[0].var_stream_idx = 0;
2009 hls->var_streams[0].nb_streams = s->nb_streams;
2010 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2011 hls->var_streams[0].nb_streams);
2012 if (!hls->var_streams[0].streams)
2013 return AVERROR(ENOMEM);
2015 //by default, the first available ccgroup is mapped to the variant stream
2016 if (hls->nb_ccstreams) {
2017 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2018 if (!hls->var_streams[0].ccgroup)
2019 return AVERROR(ENOMEM);
2022 for (i = 0; i < s->nb_streams; i++)
2023 hls->var_streams[0].streams[i] = s->streams[i];
2028 static int update_master_pl_info(AVFormatContext *s) {
2029 HLSContext *hls = s->priv_data;
2031 char *fn1= NULL, *fn2 = NULL;
2034 fn1 = av_strdup(s->url);
2036 ret = AVERROR(ENOMEM);
2040 dir = av_dirname(fn1);
2043 * if output file's directory has %v, variants are created in sub-directories
2044 * then master is created at the sub-directories level
2046 if (dir && av_stristr(av_basename(dir), "%v")) {
2047 fn2 = av_strdup(dir);
2049 ret = AVERROR(ENOMEM);
2052 dir = av_dirname(fn2);
2055 if (dir && strcmp(dir, "."))
2056 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2058 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2060 if (!hls->master_m3u8_url) {
2061 ret = AVERROR(ENOMEM);
2072 static int hls_write_header(AVFormatContext *s)
2074 HLSContext *hls = s->priv_data;
2076 AVDictionary *options = NULL;
2077 VariantStream *vs = NULL;
2079 for (i = 0; i < hls->nb_varstreams; i++) {
2080 vs = &hls->var_streams[i];
2082 av_dict_copy(&options, hls->format_options, 0);
2083 ret = avformat_write_header(vs->avf, &options);
2084 if (av_dict_count(options)) {
2085 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2086 ret = AVERROR(EINVAL);
2087 av_dict_free(&options);
2090 av_dict_free(&options);
2091 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2092 for (j = 0; j < vs->nb_streams; j++) {
2094 AVStream *outer_st = vs->streams[j];
2096 if (hls->max_seg_size > 0) {
2097 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2098 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2099 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2100 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2101 outer_st->codecpar->bit_rate, hls->max_seg_size);
2105 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2106 inner_st = vs->avf->streams[j];
2107 else if (vs->vtt_avf)
2108 inner_st = vs->vtt_avf->streams[0];
2110 /* We have a subtitle stream, when the user does not want one */
2114 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2115 write_codec_attr(outer_st, vs);
2118 /* Update the Codec Attr string for the mapped audio groups */
2119 if (vs->has_video && vs->agroup) {
2120 for (j = 0; j < hls->nb_varstreams; j++) {
2121 VariantStream *vs_agroup = &(hls->var_streams[j]);
2122 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2123 vs_agroup->agroup &&
2124 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2125 write_codec_attr(vs_agroup->streams[0], vs);
2135 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2137 HLSContext *hls = s->priv_data;
2138 AVFormatContext *oc = NULL;
2139 AVStream *st = s->streams[pkt->stream_index];
2140 int64_t end_pts = 0;
2142 int ret = 0, can_split = 1, i, j;
2143 int stream_index = 0;
2144 int range_length = 0;
2145 const char *proto = avio_find_protocol_name(s->url);
2146 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2147 uint8_t *buffer = NULL;
2148 VariantStream *vs = NULL;
2149 AVDictionary *options = NULL;
2150 char *old_filename = NULL;
2152 for (i = 0; i < hls->nb_varstreams; i++) {
2153 vs = &hls->var_streams[i];
2154 for (j = 0; j < vs->nb_streams; j++) {
2155 if (vs->streams[j] == st) {
2156 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2172 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2173 return AVERROR(ENOMEM);
2176 end_pts = hls->recording_time * vs->number;
2178 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2179 /* reset end_pts, hls->recording_time at end of the init hls list */
2180 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2181 int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2182 hls->recording_time = hls->time * AV_TIME_BASE;
2183 end_pts = init_list_dur + after_init_list_dur ;
2186 if (vs->start_pts == AV_NOPTS_VALUE) {
2187 vs->start_pts = pkt->pts;
2190 if (vs->has_video) {
2191 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2192 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2193 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2195 if (pkt->pts == AV_NOPTS_VALUE)
2196 is_ref_pkt = can_split = 0;
2199 if (vs->end_pts == AV_NOPTS_VALUE)
2200 vs->end_pts = pkt->pts;
2201 if (vs->new_start) {
2203 vs->duration = (double)(pkt->pts - vs->end_pts)
2204 * st->time_base.num / st->time_base.den;
2205 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2207 if (pkt->duration) {
2208 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2210 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2211 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2217 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2218 end_pts, AV_TIME_BASE_Q) >= 0) {
2219 int64_t new_start_pos;
2220 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2222 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2224 new_start_pos = avio_tell(vs->avf->pb);
2225 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2226 vs->size = new_start_pos - vs->start_pos;
2228 vs->size = new_start_pos;
2231 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2232 if (!vs->init_range_length) {
2234 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2235 avio_write(vs->out, buffer, range_length);
2237 vs->init_range_length = range_length;
2238 avio_open_dyn_buf(&oc->pb);
2239 vs->packets_written = 0;
2240 vs->start_pos = range_length;
2241 if (!byterange_mode) {
2242 ff_format_io_close(s, &vs->out);
2243 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2247 if (!byterange_mode) {
2248 hlsenc_io_close(s, &oc->pb, oc->url);
2251 if (!byterange_mode) {
2253 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2257 // look to rename the asset name
2258 if (use_temp_file && oc->url[0]) {
2259 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2260 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4) {
2261 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2265 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2266 if (hls->flags & HLS_SINGLE_FILE) {
2267 ret = flush_dynbuf(vs, &range_length);
2269 av_free(old_filename);
2272 vs->size = range_length;
2274 set_http_options(s, &options, hls);
2275 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options);
2277 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2278 "Failed to open file '%s'\n", vs->avf->url);
2279 return hls->ignore_io_errors ? 0 : ret;
2281 write_styp(vs->out);
2282 ret = flush_dynbuf(vs, &range_length);
2286 ff_format_io_close(s, &vs->out);
2288 // rename that segment from .tmp to the real one
2289 if (use_temp_file && oc->url[0]) {
2290 hls_rename_temp_file(s, oc);
2291 av_free(old_filename);
2292 old_filename = av_strdup(vs->avf->url);
2294 if (!old_filename) {
2295 return AVERROR(ENOMEM);
2301 old_filename = av_strdup(vs->avf->url);
2302 if (!old_filename) {
2303 return AVERROR(ENOMEM);
2306 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2307 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2308 vs->end_pts = pkt->pts;
2311 av_free(old_filename);
2316 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2317 vs->start_pos = new_start_pos;
2319 vs->start_pos += vs->size;
2322 if (hls->flags & HLS_SINGLE_FILE) {
2324 } else if (hls->max_seg_size > 0) {
2325 if (vs->start_pos >= hls->max_seg_size) {
2327 sls_flag_file_rename(hls, vs, old_filename);
2328 ret = hls_start(s, vs);
2330 /* When split segment by byte, the duration is short than hls_time,
2331 * so it is not enough one segment duration as hls_time, */
2336 sls_flag_file_rename(hls, vs, old_filename);
2337 ret = hls_start(s, vs);
2339 av_free(old_filename);
2345 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2346 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2347 if ((ret = hls_window(s, 0, vs)) < 0) {
2353 vs->packets_written++;
2355 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2356 if (hls->ignore_io_errors)
2363 static int hls_write_trailer(struct AVFormatContext *s)
2365 HLSContext *hls = s->priv_data;
2366 AVFormatContext *oc = NULL;
2367 AVFormatContext *vtt_oc = NULL;
2368 char *old_filename = NULL;
2369 const char *proto = avio_find_protocol_name(s->url);
2370 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2373 VariantStream *vs = NULL;
2375 for (i = 0; i < hls->nb_varstreams; i++) {
2376 vs = &hls->var_streams[i];
2379 vtt_oc = vs->vtt_avf;
2380 old_filename = av_strdup(vs->avf->url);
2382 if (!old_filename) {
2383 return AVERROR(ENOMEM);
2385 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2386 int range_length = 0;
2387 if (!vs->init_range_length) {
2388 uint8_t *buffer = NULL;
2389 int range_length, byterange_mode;
2390 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2393 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2394 avio_write(vs->out, buffer, range_length);
2396 vs->init_range_length = range_length;
2397 avio_open_dyn_buf(&oc->pb);
2398 vs->packets_written = 0;
2399 vs->start_pos = range_length;
2400 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2401 if (!byterange_mode) {
2402 ff_format_io_close(s, &vs->out);
2403 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2406 if (!(hls->flags & HLS_SINGLE_FILE)) {
2407 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2409 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2412 write_styp(vs->out);
2414 ret = flush_dynbuf(vs, &range_length);
2418 vs->size = range_length;
2419 ff_format_io_close(s, &vs->out);
2423 av_write_trailer(oc);
2425 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2426 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2428 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2429 ff_format_io_close(s, &oc->pb);
2431 // rename that segment from .tmp to the real one
2432 if (use_temp_file && oc->url[0] && !(hls->flags & HLS_SINGLE_FILE)) {
2433 hls_rename_temp_file(s, oc);
2434 av_free(old_filename);
2435 old_filename = av_strdup(vs->avf->url);
2437 if (!old_filename) {
2438 return AVERROR(ENOMEM);
2442 /* after av_write_trailer, then duration + 1 duration per packet */
2443 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2446 sls_flag_file_rename(hls, vs, old_filename);
2450 av_write_trailer(vtt_oc);
2451 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2452 ff_format_io_close(s, &vtt_oc->pb);
2454 av_freep(&vs->basename);
2455 av_freep(&vs->base_output_dirname);
2456 avformat_free_context(oc);
2459 hls_window(s, 1, vs);
2461 av_freep(&vs->fmp4_init_filename);
2463 av_freep(&vs->vtt_basename);
2464 av_freep(&vs->vtt_m3u8_name);
2465 avformat_free_context(vtt_oc);
2468 hls_free_segments(vs->segments);
2469 hls_free_segments(vs->old_segments);
2470 av_free(old_filename);
2471 av_freep(&vs->m3u8_name);
2472 av_freep(&vs->streams);
2473 av_freep(&vs->agroup);
2474 av_freep(&vs->ccgroup);
2475 av_freep(&vs->baseurl);
2478 for (i = 0; i < hls->nb_ccstreams; i++) {
2479 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2480 av_freep(&ccs->ccgroup);
2481 av_freep(&ccs->instreamid);
2482 av_freep(&ccs->language);
2485 ff_format_io_close(s, &hls->m3u8_out);
2486 ff_format_io_close(s, &hls->sub_m3u8_out);
2487 av_freep(&hls->key_basename);
2488 av_freep(&hls->var_streams);
2489 av_freep(&hls->cc_streams);
2490 av_freep(&hls->master_m3u8_url);
2495 static int hls_init(AVFormatContext *s)
2500 HLSContext *hls = s->priv_data;
2501 const char *pattern = "%d.ts";
2502 VariantStream *vs = NULL;
2503 int basename_size = 0;
2504 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2505 const char *vtt_pattern = "%d.vtt";
2507 int vtt_basename_size = 0;
2508 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2510 ret = update_variant_stream_info(s);
2512 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2516 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2517 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2518 ret = AVERROR(EINVAL);
2519 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2523 ret = validate_name(hls->nb_varstreams, s->url);
2527 if (hls->segment_filename) {
2528 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2533 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2534 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2539 if (hls->subtitle_filename) {
2540 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2545 if (hls->master_pl_name) {
2546 ret = update_master_pl_info(s);
2548 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2554 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2557 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2558 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2559 time_t t = time(NULL); // we will need it in either case
2560 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2561 hls->start_sequence = (int64_t)t;
2562 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2564 struct tm *p, tmbuf;
2565 if (!(p = localtime_r(&t, &tmbuf)))
2566 return AVERROR(ENOMEM);
2567 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2568 return AVERROR(ENOMEM);
2569 hls->start_sequence = strtoll(b, NULL, 10);
2571 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2574 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2575 for (i = 0; i < hls->nb_varstreams; i++) {
2576 vs = &hls->var_streams[i];
2578 vs->m3u8_name = av_strdup(s->url);
2579 if (!vs->m3u8_name ) {
2580 ret = AVERROR(ENOMEM);
2583 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2587 vs->sequence = hls->start_sequence;
2588 vs->start_pts = AV_NOPTS_VALUE;
2589 vs->end_pts = AV_NOPTS_VALUE;
2590 vs->current_segment_final_filename_fmt[0] = '\0';
2592 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2593 // Independent segments cannot be guaranteed when splitting by time
2594 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2595 av_log(s, AV_LOG_WARNING,
2596 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2597 "Disabling 'independent_segments' flag\n");
2600 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2603 vs->initial_prog_date_time = now0;
2605 if (hls->format_options_str) {
2606 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2608 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2613 for (j = 0; j < vs->nb_streams; j++) {
2614 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2615 /* Get one video stream to reference for split segments
2616 * so use the first video stream index. */
2617 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2618 vs->reference_stream_index = vs->streams[j]->index;
2620 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2623 if (vs->has_video > 1)
2624 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2625 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2626 vs->oformat = av_guess_format("mp4", NULL, NULL);
2628 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2632 ret = AVERROR_MUXER_NOT_FOUND;
2636 if (vs->has_subtitle) {
2637 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2639 ret = AVERROR_MUXER_NOT_FOUND;
2643 if (hls->segment_filename) {
2644 basename_size = strlen(hls->segment_filename) + 1;
2645 vs->basename = av_malloc(basename_size);
2646 if (!vs->basename) {
2647 ret = AVERROR(ENOMEM);
2651 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2652 ret = format_name(vs->basename, basename_size, i);
2656 if (hls->flags & HLS_SINGLE_FILE) {
2657 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2664 if (hls->use_localtime) {
2665 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2667 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2670 vs->basename = av_malloc(basename_size);
2671 if (!vs->basename) {
2672 ret = AVERROR(ENOMEM);
2676 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2678 p = strrchr(vs->basename, '.');
2681 if (hls->use_localtime) {
2682 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2684 av_strlcat(vs->basename, pattern, basename_size);
2688 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2689 if (hls->nb_varstreams > 1)
2690 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2691 if (hls->flags & HLS_SINGLE_FILE) {
2692 vs->fmp4_init_filename = av_strdup(vs->basename);
2693 if (!vs->fmp4_init_filename) {
2694 ret = AVERROR(ENOMEM);
2698 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2699 if (!vs->fmp4_init_filename ) {
2700 ret = AVERROR(ENOMEM);
2703 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2704 fmp4_init_filename_len);
2705 if (hls->nb_varstreams > 1) {
2706 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2711 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2712 strlen(vs->fmp4_init_filename) + 1;
2714 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2715 if (!vs->base_output_dirname) {
2716 ret = AVERROR(ENOMEM);
2720 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2721 fmp4_init_filename_len);
2722 p = strrchr(vs->base_output_dirname, '/');
2725 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2726 fmp4_init_filename_len);
2728 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2729 fmp4_init_filename_len);
2734 if (!hls->use_localtime) {
2735 ret = sls_flag_check_duration_size_index(hls);
2740 ret = sls_flag_check_duration_size(hls, vs);
2745 if (vs->has_subtitle) {
2747 if (hls->flags & HLS_SINGLE_FILE)
2748 vtt_pattern = ".vtt";
2749 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2751 vs->vtt_basename = av_malloc(vtt_basename_size);
2752 if (!vs->vtt_basename) {
2753 ret = AVERROR(ENOMEM);
2756 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2757 if (!vs->vtt_m3u8_name ) {
2758 ret = AVERROR(ENOMEM);
2761 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2762 p = strrchr(vs->vtt_basename, '.');
2766 if ( hls->subtitle_filename ) {
2767 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2768 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2772 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2773 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2775 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2779 vs->baseurl = av_strdup(hls->baseurl);
2781 ret = AVERROR(ENOMEM);
2786 if ((ret = hls_mux_init(s, vs)) < 0)
2789 if (hls->flags & HLS_APPEND_LIST) {
2790 parse_playlist(s, vs->m3u8_name, vs);
2791 vs->discontinuity = 1;
2792 if (hls->init_time > 0) {
2793 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2794 " hls_init_time value will have no effect\n");
2796 hls->recording_time = hls->time * AV_TIME_BASE;
2800 if ((ret = hls_start(s, vs)) < 0)
2806 av_freep(&hls->key_basename);
2807 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2808 vs = &hls->var_streams[i];
2809 av_freep(&vs->basename);
2810 av_freep(&vs->vtt_basename);
2811 av_freep(&vs->fmp4_init_filename);
2812 av_freep(&vs->m3u8_name);
2813 av_freep(&vs->vtt_m3u8_name);
2814 av_freep(&vs->streams);
2815 av_freep(&vs->agroup);
2816 av_freep(&vs->ccgroup);
2817 av_freep(&vs->baseurl);
2819 avformat_free_context(vs->avf);
2821 avformat_free_context(vs->vtt_avf);
2823 for (i = 0; i < hls->nb_ccstreams; i++) {
2824 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2825 av_freep(&ccs->ccgroup);
2826 av_freep(&ccs->instreamid);
2827 av_freep(&ccs->language);
2829 av_freep(&hls->var_streams);
2830 av_freep(&hls->cc_streams);
2831 av_freep(&hls->master_m3u8_url);
2837 #define OFFSET(x) offsetof(HLSContext, x)
2838 #define E AV_OPT_FLAG_ENCODING_PARAM
2839 static const AVOption options[] = {
2840 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2841 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2842 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2843 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2844 {"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},
2845 {"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},
2846 {"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},
2848 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2850 {"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},
2851 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2852 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2853 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2854 {"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},
2855 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2856 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2857 {"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},
2858 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2859 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2860 {"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"},
2861 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2862 {"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"},
2863 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2864 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2865 {"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"},
2866 {"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"},
2867 {"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"},
2868 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2869 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2870 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2871 {"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"},
2872 {"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"},
2873 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2874 {"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"},
2875 {"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"},
2876 {"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"},
2877 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2878 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2879 #if FF_API_HLS_USE_LOCALTIME
2880 {"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 },
2882 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2883 #if FF_API_HLS_USE_LOCALTIME
2884 {"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 },
2886 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2887 {"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" },
2888 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2889 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2890 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2891 {"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" },
2892 {"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" },
2893 {"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" },
2894 {"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" },
2895 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2896 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2897 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2898 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2899 {"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},
2900 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2901 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2902 {"ignore_io_errors", "Ignore IO errors for stable long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2906 static const AVClass hls_class = {
2907 .class_name = "hls muxer",
2908 .item_name = av_default_item_name,
2910 .version = LIBAVUTIL_VERSION_INT,
2914 AVOutputFormat ff_hls_muxer = {
2916 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2917 .extensions = "m3u8",
2918 .priv_data_size = sizeof(HLSContext),
2919 .audio_codec = AV_CODEC_ID_AAC,
2920 .video_codec = AV_CODEC_ID_H264,
2921 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2922 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2924 .write_header = hls_write_header,
2925 .write_packet = hls_write_packet,
2926 .write_trailer = hls_write_trailer,
2927 .priv_class = &hls_class,