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 int is_default; /* default status of audio group */
157 char *language; /* audio lauguage name */
158 char *agroup; /* audio group name */
159 char *ccgroup; /* closed caption group name */
163 typedef struct ClosedCaptionsStream {
164 char *ccgroup; /* closed caption group name */
165 char *instreamid; /* closed captions INSTREAM-ID */
166 char *language; /* closed captions langauge */
167 } ClosedCaptionsStream;
169 typedef struct HLSContext {
170 const AVClass *class; // Class for private options.
171 int64_t start_sequence;
172 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
174 float time; // Set by a private option.
175 float init_time; // Set by a private option.
176 int max_nb_segments; // Set by a private option.
177 int hls_delete_threshold; // Set by a private option.
179 int wrap; // Set by a private option.
181 uint32_t flags; // enum HLSFlags
182 uint32_t pl_type; // enum PlaylistType
183 char *segment_filename;
184 char *fmp4_init_filename;
187 int use_localtime; ///< flag to expand filename with localtime
188 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
190 int64_t recording_time;
191 int64_t max_seg_size; // every segment file max size
194 char *format_options_str;
195 char *vtt_format_options_str;
196 char *subtitle_filename;
197 AVDictionary *format_options;
207 char key_file[LINE_BUFFER_SIZE + 1];
208 char key_uri[LINE_BUFFER_SIZE + 1];
209 char key_string[KEYSIZE*2 + 1];
210 char iv_string[KEYSIZE*2 + 1];
211 AVDictionary *vtt_format_options;
216 VariantStream *var_streams;
217 unsigned int nb_varstreams;
218 ClosedCaptionsStream *cc_streams;
219 unsigned int nb_ccstreams;
221 int master_m3u8_created; /* status of master play-list creation */
222 char *master_m3u8_url; /* URL of the master m3u8 file */
223 int version; /* HLS version */
224 char *var_stream_map; /* user specified variant stream map string */
225 char *cc_stream_map; /* user specified closed caption streams map string */
226 char *master_pl_name;
227 unsigned int master_publish_rate;
229 AVIOContext *m3u8_out;
230 AVIOContext *sub_m3u8_out;
232 int ignore_io_errors;
233 int has_default_key; /* has DEFAULT field of var_stream_map */
234 int has_video_m3u8; /* has video stream m3u8 list */
237 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
238 AVDictionary **options) {
239 HLSContext *hls = s->priv_data;
240 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
241 int err = AVERROR_MUXER_NOT_FOUND;
242 if (!*pb || !http_base_proto || !hls->http_persistent) {
243 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
244 #if CONFIG_HTTP_PROTOCOL
246 URLContext *http_url_context = ffio_geturlcontext(*pb);
247 av_assert0(http_url_context);
248 err = ff_http_do_new_request(http_url_context, filename);
250 ff_format_io_close(s, pb);
257 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
258 HLSContext *hls = s->priv_data;
259 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
262 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
263 ff_format_io_close(s, pb);
264 #if CONFIG_HTTP_PROTOCOL
266 URLContext *http_url_context = ffio_geturlcontext(*pb);
267 av_assert0(http_url_context);
269 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
274 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
276 int http_base_proto = ff_is_http_proto(s->url);
279 av_dict_set(options, "method", c->method, 0);
280 } else if (http_base_proto) {
281 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
282 av_dict_set(options, "method", "PUT", 0);
285 av_dict_set(options, "user_agent", c->user_agent, 0);
286 if (c->http_persistent)
287 av_dict_set_int(options, "multiple_requests", 1, 0);
289 av_dict_set_int(options, "timeout", c->timeout, 0);
292 static void write_codec_attr(AVStream *st, VariantStream *vs) {
293 int codec_strlen = strlen(vs->codec_attr);
296 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
298 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
301 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
302 uint8_t *data = st->codecpar->extradata;
303 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
304 snprintf(attr, sizeof(attr),
305 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
309 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
310 snprintf(attr, sizeof(attr), "mp4a.40.33");
311 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
312 snprintf(attr, sizeof(attr), "mp4a.40.34");
313 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
314 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
315 snprintf(attr, sizeof(attr), "mp4a.40.2");
316 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
317 snprintf(attr, sizeof(attr), "ac-3");
318 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
319 snprintf(attr, sizeof(attr), "ec-3");
323 // Don't write the same attribute multiple times
324 if (!av_stristr(vs->codec_attr, attr)) {
325 snprintf(vs->codec_attr + codec_strlen,
326 sizeof(vs->codec_attr) - codec_strlen,
327 "%s%s", codec_strlen ? "," : "", attr);
332 vs->codec_attr[0] = '\0';
333 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
337 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
342 int nd, addchar_count;
346 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
353 if (c == '%' && *(p+1) == '%') // %%
355 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
358 while (av_isdigit(*(p + addchar_count))) {
359 nd = nd * 10 + *(p + addchar_count) - '0';
363 if (*(p + addchar_count) == placeholder) {
364 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
365 p += (addchar_count + 1);
373 av_bprint_append_data(&buf, p, addchar_count);
376 if (!av_bprint_is_complete(&buf)) {
377 av_bprint_finalize(&buf, NULL);
380 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
386 static void write_styp(AVIOContext *pb)
389 ffio_wfourcc(pb, "styp");
390 ffio_wfourcc(pb, "msdh");
391 avio_wb32(pb, 0); /* minor */
392 ffio_wfourcc(pb, "msdh");
393 ffio_wfourcc(pb, "msix");
396 static int flush_dynbuf(VariantStream *vs, int *range_length)
398 AVFormatContext *ctx = vs->avf;
402 return AVERROR(EINVAL);
406 av_write_frame(ctx, NULL);
410 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
412 avio_write(vs->out, buffer, *range_length);
416 return avio_open_dyn_buf(&ctx->pb);
419 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
422 HLSSegment *segment, *previous_segment = NULL;
423 float playlist_duration = 0.0f;
424 int ret = 0, path_size, sub_path_size;
426 char *dirname = NULL, *p, *sub_path;
428 char *vtt_dirname = NULL;
429 AVDictionary *options = NULL;
430 AVIOContext *out = NULL;
431 const char *proto = NULL;
433 segment = vs->segments;
435 playlist_duration += segment->duration;
436 segment = segment->next;
439 segment = vs->old_segments;
442 playlist_duration -= segment->duration;
443 previous_segment = segment;
444 segment = previous_segment->next;
446 if (playlist_duration <= -previous_segment->duration) {
447 previous_segment->next = NULL;
450 if (segment_cnt >= hls->hls_delete_threshold) {
451 previous_segment->next = NULL;
456 if (segment && !hls->use_localtime_mkdir) {
457 if (hls->segment_filename) {
458 dirname = av_strdup(hls->segment_filename);
460 dirname = av_strdup(vs->avf->url);
463 ret = AVERROR(ENOMEM);
466 p = (char *)av_basename(dirname);
472 char * r_dirname = dirname;
474 /* if %v is present in the file's directory */
475 if (dirname && av_stristr(dirname, "%v")) {
477 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
478 ret = AVERROR(EINVAL);
485 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
487 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
488 path = av_malloc(path_size);
490 ret = AVERROR(ENOMEM);
494 if (hls->use_localtime_mkdir)
495 av_strlcpy(path, segment->filename, path_size);
496 else { // segment->filename contains basename only
497 av_strlcpy(path, dirname, path_size);
498 av_strlcat(path, segment->filename, path_size);
501 proto = avio_find_protocol_name(s->url);
502 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
503 av_dict_set(&options, "method", "DELETE", 0);
504 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
505 if (hls->ignore_io_errors)
509 ff_format_io_close(vs->avf, &out);
510 } else if (unlink(path) < 0) {
511 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
512 path, strerror(errno));
515 if ((segment->sub_filename[0] != '\0')) {
516 vtt_dirname = av_strdup(vs->vtt_avf->url);
518 ret = AVERROR(ENOMEM);
521 p = (char *)av_basename(vtt_dirname);
523 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
524 sub_path = av_malloc(sub_path_size);
526 ret = AVERROR(ENOMEM);
530 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
531 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
533 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
534 av_dict_set(&options, "method", "DELETE", 0);
535 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
536 if (hls->ignore_io_errors)
541 ff_format_io_close(vs->vtt_avf, &out);
542 } else if (unlink(sub_path) < 0) {
543 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
544 sub_path, strerror(errno));
549 previous_segment = segment;
550 segment = previous_segment->next;
551 av_free(previous_segment);
557 av_free(vtt_dirname);
562 static int randomize(uint8_t *buf, int len)
565 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
568 if (RAND_bytes(buf, len))
571 return AVERROR(ENOSYS);
573 return AVERROR(EINVAL);
576 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
578 HLSContext *hls = s->priv_data;
582 uint8_t key[KEYSIZE];
584 len = strlen(s->url) + 4 + 1;
585 hls->key_basename = av_mallocz(len);
586 if (!hls->key_basename)
587 return AVERROR(ENOMEM);
589 av_strlcpy(hls->key_basename, s->url, len);
590 av_strlcat(hls->key_basename, ".key", len);
593 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
594 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
596 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
597 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
600 if (!*hls->iv_string) {
601 uint8_t iv[16] = { 0 };
605 AV_WB64(iv + 8, vs->sequence);
607 memcpy(iv, hls->iv, sizeof(iv));
609 ff_data_to_hex(buf, iv, sizeof(iv), 0);
611 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
614 if (!*hls->key_uri) {
615 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
616 return AVERROR(EINVAL);
619 if (!*hls->key_file) {
620 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
621 return AVERROR(EINVAL);
624 if (!*hls->key_string) {
626 if ((ret = randomize(key, sizeof(key))) < 0) {
627 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
631 memcpy(key, hls->key, sizeof(key));
634 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
635 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
637 avio_seek(pb, 0, SEEK_CUR);
638 avio_write(pb, key, KEYSIZE);
645 static int hls_encryption_start(AVFormatContext *s)
647 HLSContext *hls = s->priv_data;
650 uint8_t key[KEYSIZE];
652 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
653 av_log(hls, AV_LOG_ERROR,
654 "error opening key info file %s\n", hls->key_info_file);
658 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
659 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
661 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
662 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
664 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
665 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
667 ff_format_io_close(s, &pb);
669 if (!*hls->key_uri) {
670 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
671 return AVERROR(EINVAL);
674 if (!*hls->key_file) {
675 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
676 return AVERROR(EINVAL);
679 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
680 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
684 ret = avio_read(pb, key, sizeof(key));
685 ff_format_io_close(s, &pb);
686 if (ret != sizeof(key)) {
687 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
688 if (ret >= 0 || ret == AVERROR_EOF)
689 ret = AVERROR(EINVAL);
692 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
697 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
699 AVDictionary *options = NULL;
700 HLSContext *hls = s->priv_data;
702 AVFormatContext *vtt_oc = NULL;
703 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
706 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
711 oc->url = av_strdup("");
713 return AVERROR(ENOMEM);
715 oc->oformat = vs->oformat;
716 oc->interrupt_callback = s->interrupt_callback;
717 oc->max_delay = s->max_delay;
718 oc->opaque = s->opaque;
719 oc->io_open = s->io_open;
720 oc->io_close = s->io_close;
721 av_dict_copy(&oc->metadata, s->metadata, 0);
723 if(vs->vtt_oformat) {
724 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
727 vtt_oc = vs->vtt_avf;
728 vtt_oc->oformat = vs->vtt_oformat;
729 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
732 for (i = 0; i < vs->nb_streams; i++) {
734 AVFormatContext *loc;
735 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
740 if (!(st = avformat_new_stream(loc, NULL)))
741 return AVERROR(ENOMEM);
742 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
743 if (!oc->oformat->codec_tag ||
744 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
745 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
746 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
748 st->codecpar->codec_tag = 0;
751 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
752 st->time_base = vs->streams[i]->time_base;
753 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
756 vs->packets_written = 1;
760 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
761 if (hls->max_seg_size > 0) {
762 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
763 return AVERROR_PATCHWELCOME;
766 vs->packets_written = 0;
767 vs->init_range_length = 0;
768 set_http_options(s, &options, hls);
769 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
772 if (byterange_mode) {
773 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
775 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
777 av_dict_free(&options);
779 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
783 if (hls->format_options_str) {
784 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
786 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
787 hls->format_options_str);
792 av_dict_copy(&options, hls->format_options, 0);
793 av_dict_set(&options, "fflags", "-autobsf", 0);
794 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
795 ret = avformat_init_output(oc, &options);
798 if (av_dict_count(options)) {
799 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
800 av_dict_free(&options);
801 return AVERROR(EINVAL);
804 av_dict_free(&options);
809 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
812 if (!av_strcasecmp(segment->filename,filename))
814 segment = segment->next;
816 return (HLSSegment *) NULL;
819 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
820 VariantStream *vs, HLSSegment *en,
821 double duration, int64_t pos, int64_t size)
823 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
824 strlen(vs->current_segment_final_filename_fmt)) {
825 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
828 return AVERROR(ENOMEM);
830 ff_format_set_url(vs->avf, new_url);
831 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
832 char *filename = NULL;
833 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
834 av_log(hls, AV_LOG_ERROR,
835 "Invalid second level segment filename template '%s', "
836 "you can try to remove second_level_segment_size flag\n",
840 return AVERROR(EINVAL);
842 ff_format_set_url(vs->avf, filename);
844 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
845 char *filename = NULL;
846 if (replace_int_data_in_filename(&filename, vs->avf->url,
847 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
848 av_log(hls, AV_LOG_ERROR,
849 "Invalid second level segment filename template '%s', "
850 "you can try to remove second_level_segment_time flag\n",
854 return AVERROR(EINVAL);
856 ff_format_set_url(vs->avf, filename);
862 static int sls_flag_check_duration_size_index(HLSContext *hls)
866 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
867 av_log(hls, AV_LOG_ERROR,
868 "second_level_segment_duration hls_flag requires strftime to be true\n");
869 ret = AVERROR(EINVAL);
871 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
872 av_log(hls, AV_LOG_ERROR,
873 "second_level_segment_size hls_flag requires strfime to be true\n");
874 ret = AVERROR(EINVAL);
876 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
877 av_log(hls, AV_LOG_ERROR,
878 "second_level_segment_index hls_flag requires strftime to be true\n");
879 ret = AVERROR(EINVAL);
885 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
887 const char *proto = avio_find_protocol_name(vs->basename);
888 int segment_renaming_ok = proto && !strcmp(proto, "file");
891 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
892 av_log(hls, AV_LOG_ERROR,
893 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
894 ret = AVERROR(EINVAL);
896 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
897 av_log(hls, AV_LOG_ERROR,
898 "second_level_segment_size hls_flag works only with file protocol segment names\n");
899 ret = AVERROR(EINVAL);
905 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
906 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
907 strlen(vs->current_segment_final_filename_fmt)) {
908 ff_rename(old_filename, vs->avf->url, hls);
912 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
914 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
915 char *filename = NULL;
916 if (replace_int_data_in_filename(&filename,
918 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
920 oc->url, 'd', vs->sequence) < 1) {
922 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
923 "you can try to remove second_level_segment_index flag\n",
926 return AVERROR(EINVAL);
928 ff_format_set_url(oc, filename);
930 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
931 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
932 sizeof(vs->current_segment_final_filename_fmt));
933 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
934 char *filename = NULL;
935 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
936 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
937 "you can try to remove second_level_segment_size flag\n",
940 return AVERROR(EINVAL);
942 ff_format_set_url(oc, filename);
944 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
945 char *filename = NULL;
946 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
947 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
948 "you can try to remove second_level_segment_time flag\n",
951 return AVERROR(EINVAL);
953 ff_format_set_url(oc, filename);
959 /* Create a new segment and append it to the segment list */
960 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
961 VariantStream *vs, double duration, int64_t pos,
964 HLSSegment *en = av_malloc(sizeof(*en));
965 const char *filename;
966 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
970 return AVERROR(ENOMEM);
972 en->var_stream_idx = vs->var_stream_idx;
973 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
978 filename = av_basename(vs->avf->url);
980 if (hls->use_localtime_mkdir) {
981 filename = vs->avf->url;
983 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
984 && !byterange_mode) {
985 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
987 av_strlcpy(en->filename, filename, sizeof(en->filename));
990 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
992 en->sub_filename[0] = '\0';
994 en->duration = duration;
1000 if (vs->discontinuity) {
1002 vs->discontinuity = 0;
1005 if (hls->key_info_file || hls->encrypt) {
1006 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1007 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1013 vs->last_segment->next = en;
1015 vs->last_segment = en;
1017 // EVENT or VOD playlists imply sliding window cannot be used
1018 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1019 hls->max_nb_segments = 0;
1021 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1023 vs->initial_prog_date_time += en->duration;
1024 vs->segments = en->next;
1025 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1027 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1029 !(hls->flags & HLS_SINGLE_FILE)) {
1031 en->next = vs->old_segments;
1032 vs->old_segments = en;
1033 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1040 if (hls->max_seg_size > 0) {
1048 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1050 HLSContext *hls = s->priv_data;
1052 int ret = 0, is_segment = 0;
1053 int64_t new_start_pos;
1058 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1059 &s->interrupt_callback, NULL,
1060 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1063 ff_get_chomp_line(in, line, sizeof(line));
1064 if (strcmp(line, "#EXTM3U")) {
1065 ret = AVERROR_INVALIDDATA;
1069 vs->discontinuity = 0;
1070 while (!avio_feof(in)) {
1071 ff_get_chomp_line(in, line, sizeof(line));
1072 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1073 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1074 if (tmp_sequence < vs->sequence)
1075 av_log(hls, AV_LOG_VERBOSE,
1076 "Found playlist sequence number was smaller """
1077 "than specified start sequence number: %"PRId64" < %"PRId64", "
1078 "omitting\n", tmp_sequence, hls->start_sequence);
1080 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1081 vs->sequence = tmp_sequence;
1083 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1085 vs->discontinuity = 1;
1086 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1088 vs->duration = atof(ptr);
1089 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1090 ptr = av_stristr(line, "URI=\"");
1092 ptr += strlen("URI=\"");
1093 end = av_stristr(ptr, ",");
1095 av_strlcpy(hls->key_uri, ptr, end - ptr);
1097 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1101 ptr = av_stristr(line, "IV=0x");
1103 ptr += strlen("IV=0x");
1104 end = av_stristr(ptr, ",");
1106 av_strlcpy(hls->iv_string, ptr, end - ptr);
1108 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1112 } else if (av_strstart(line, "#", NULL)) {
1114 } else if (line[0]) {
1116 char *new_file = av_strdup(line);
1118 ret = AVERROR(ENOMEM);
1121 ff_format_set_url(vs->avf, new_file);
1123 new_start_pos = avio_tell(vs->avf->pb);
1124 vs->size = new_start_pos - vs->start_pos;
1125 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1128 vs->start_pos = new_start_pos;
1138 static void hls_free_segments(HLSSegment *p)
1149 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1151 size_t len = strlen(oc->url);
1152 char *final_filename = av_strdup(oc->url);
1155 if (!final_filename)
1156 return AVERROR(ENOMEM);
1157 final_filename[len-4] = '\0';
1158 ret = ff_rename(oc->url, final_filename, s);
1159 oc->url[len-4] = '\0';
1160 av_freep(&final_filename);
1164 static int get_relative_url(const char *master_url, const char *media_url,
1165 char *rel_url, int rel_url_buf_size)
1169 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1170 strrchr(master_url, '\\');
1172 base_len = FFABS(p - master_url);
1173 if (av_strncasecmp(master_url, media_url, base_len)) {
1174 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1175 return AVERROR(EINVAL);
1178 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1182 static int64_t get_stream_bit_rate(AVStream *stream) {
1183 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1185 AV_PKT_DATA_CPB_PROPERTIES,
1189 if (stream->codecpar->bit_rate)
1190 return stream->codecpar->bit_rate;
1192 return props->max_bitrate;
1197 static int create_master_playlist(AVFormatContext *s,
1198 VariantStream * const input_vs)
1200 HLSContext *hls = s->priv_data;
1201 VariantStream *vs, *temp_vs;
1202 AVStream *vid_st, *aud_st;
1203 AVDictionary *options = NULL;
1205 int m3u8_name_size, ret, bandwidth;
1206 char *m3u8_rel_name, *ccgroup;
1207 ClosedCaptionsStream *ccs;
1209 input_vs->m3u8_created = 1;
1210 if (!hls->master_m3u8_created) {
1211 /* For the first time, wait until all the media playlists are created */
1212 for (i = 0; i < hls->nb_varstreams; i++)
1213 if (!hls->var_streams[i].m3u8_created)
1216 /* Keep publishing the master playlist at the configured rate */
1217 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1218 input_vs->number % hls->master_publish_rate)
1222 set_http_options(s, &options, hls);
1224 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1225 av_dict_free(&options);
1227 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1228 hls->master_m3u8_url);
1232 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1234 for (i = 0; i < hls->nb_ccstreams; i++) {
1235 ccs = &(hls->cc_streams[i]);
1236 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1237 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1238 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1240 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1241 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1244 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1245 for (i = 0; i < hls->nb_varstreams; i++) {
1246 vs = &(hls->var_streams[i]);
1248 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1251 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1252 m3u8_rel_name = av_malloc(m3u8_name_size);
1253 if (!m3u8_rel_name) {
1254 ret = AVERROR(ENOMEM);
1257 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1258 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1259 m3u8_rel_name, m3u8_name_size);
1261 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1265 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1267 av_freep(&m3u8_rel_name);
1270 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1271 for (i = 0; i < hls->nb_varstreams; i++) {
1272 vs = &(hls->var_streams[i]);
1274 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1275 m3u8_rel_name = av_malloc(m3u8_name_size);
1276 if (!m3u8_rel_name) {
1277 ret = AVERROR(ENOMEM);
1280 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1281 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1282 m3u8_rel_name, m3u8_name_size);
1284 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1290 for (j = 0; j < vs->nb_streams; j++) {
1291 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1292 vid_st = vs->streams[j];
1293 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1294 aud_st = vs->streams[j];
1297 if (!vid_st && !aud_st) {
1298 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1303 * Traverse through the list of audio only rendition streams and find
1304 * the rendition which has highest bitrate in the same audio group
1307 for (j = 0; j < hls->nb_varstreams; j++) {
1308 temp_vs = &(hls->var_streams[j]);
1309 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1311 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1313 aud_st = temp_vs->streams[0];
1314 if (temp_vs->streams[0]->codecpar->bit_rate >
1315 aud_st->codecpar->bit_rate)
1316 aud_st = temp_vs->streams[0];
1323 bandwidth += get_stream_bit_rate(vid_st);
1325 bandwidth += get_stream_bit_rate(aud_st);
1326 bandwidth += bandwidth / 10;
1329 if (vid_st && vs->ccgroup) {
1330 /* check if this group name is available in the cc map string */
1331 for (j = 0; j < hls->nb_ccstreams; j++) {
1332 ccs = &(hls->cc_streams[j]);
1333 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1334 ccgroup = vs->ccgroup;
1338 if (j == hls->nb_ccstreams)
1339 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1343 if (!hls->has_default_key || !hls->has_video_m3u8) {
1344 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1345 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1348 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1349 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1353 av_freep(&m3u8_rel_name);
1357 hls->master_m3u8_created = 1;
1358 av_freep(&m3u8_rel_name);
1359 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1363 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1365 HLSContext *hls = s->priv_data;
1367 int target_duration = 0;
1369 char temp_filename[1024];
1370 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1371 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1372 int is_file_proto = proto && !strcmp(proto, "file");
1373 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1374 static unsigned warned_non_file;
1375 char *key_uri = NULL;
1376 char *iv_string = NULL;
1377 AVDictionary *options = NULL;
1378 double prog_date_time = vs->initial_prog_date_time;
1379 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1380 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1383 if (byterange_mode) {
1388 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1392 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1396 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1397 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1399 set_http_options(s, &options, hls);
1400 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1401 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0) {
1402 if (hls->ignore_io_errors)
1407 for (en = vs->segments; en; en = en->next) {
1408 if (target_duration <= en->duration)
1409 target_duration = lrint(en->duration);
1412 vs->discontinuity_set = 0;
1413 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1414 target_duration, sequence, hls->pl_type);
1416 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1417 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1418 vs->discontinuity_set = 1;
1420 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1421 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1423 for (en = vs->segments; en; en = en->next) {
1424 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1425 av_strcasecmp(en->iv_string, iv_string))) {
1426 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1428 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1429 avio_printf(hls->m3u8_out, "\n");
1430 key_uri = en->key_uri;
1431 iv_string = en->iv_string;
1434 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1435 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1436 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1439 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1440 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1441 en->size, en->pos, vs->baseurl,
1442 en->filename, prog_date_time_p);
1444 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1448 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1449 ff_hls_write_end_list(hls->m3u8_out);
1451 if( vs->vtt_m3u8_name ) {
1452 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0) {
1453 if (hls->ignore_io_errors)
1457 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1458 target_duration, sequence, PLAYLIST_TYPE_NONE);
1459 for (en = vs->segments; en; en = en->next) {
1460 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1461 en->duration, 0, en->size, en->pos,
1462 vs->baseurl, en->sub_filename, NULL);
1464 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1469 ff_hls_write_end_list(hls->sub_m3u8_out);
1474 av_dict_free(&options);
1475 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1476 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1478 ff_rename(temp_filename, vs->m3u8_name, s);
1479 if (ret >= 0 && hls->master_pl_name)
1480 if (create_master_playlist(s, vs) < 0)
1481 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1486 static int hls_start(AVFormatContext *s, VariantStream *vs)
1488 HLSContext *c = s->priv_data;
1489 AVFormatContext *oc = vs->avf;
1490 AVFormatContext *vtt_oc = vs->vtt_avf;
1491 AVDictionary *options = NULL;
1492 const char *proto = NULL;
1493 int use_temp_file = 0;
1494 char *filename, iv_string[KEYSIZE*2 + 1];
1497 if (c->flags & HLS_SINGLE_FILE) {
1498 char *new_name = av_strdup(vs->basename);
1500 return AVERROR(ENOMEM);
1501 ff_format_set_url(oc, new_name);
1502 if (vs->vtt_basename) {
1503 new_name = av_strdup(vs->vtt_basename);
1505 return AVERROR(ENOMEM);
1506 ff_format_set_url(vtt_oc, new_name);
1508 } else if (c->max_seg_size > 0) {
1509 char *filename = NULL;
1510 if (replace_int_data_in_filename(&filename,
1512 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1514 vs->basename, 'd', vs->sequence) < 1) {
1517 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1518 return AVERROR(EINVAL);
1520 ff_format_set_url(oc, filename);
1522 if (c->use_localtime) {
1524 struct tm *tm, tmpbuf;
1525 int bufsize = strlen(vs->basename) + 1024;
1526 char *buf = av_mallocz(bufsize);
1528 return AVERROR(ENOMEM);
1530 tm = localtime_r(&now0, &tmpbuf);
1531 ff_format_set_url(oc, buf);
1532 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1533 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1534 return AVERROR(EINVAL);
1537 err = sls_flag_use_localtime_filename(oc, c, vs);
1539 return AVERROR(ENOMEM);
1542 if (c->use_localtime_mkdir) {
1544 char *fn_copy = av_strdup(oc->url);
1546 return AVERROR(ENOMEM);
1548 dir = av_dirname(fn_copy);
1549 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1550 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1552 return AVERROR(errno);
1557 char *filename = NULL;
1558 if (replace_int_data_in_filename(&filename,
1560 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1562 vs->basename, 'd', vs->sequence) < 1) {
1565 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1566 return AVERROR(EINVAL);
1568 ff_format_set_url(oc, filename);
1570 if( vs->vtt_basename) {
1571 char *filename = NULL;
1572 if (replace_int_data_in_filename(&filename,
1574 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1576 vs->vtt_basename, 'd', vs->sequence) < 1) {
1579 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1580 return AVERROR(EINVAL);
1582 ff_format_set_url(vtt_oc, filename);
1587 set_http_options(s, &options, c);
1589 proto = avio_find_protocol_name(oc->url);
1590 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1592 if (use_temp_file) {
1593 char *new_name = av_asprintf("%s.tmp", oc->url);
1595 return AVERROR(ENOMEM);
1596 ff_format_set_url(oc, new_name);
1599 if (c->key_info_file || c->encrypt) {
1600 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1601 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1602 return AVERROR_PATCHWELCOME;
1605 if (c->key_info_file && c->encrypt) {
1606 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1607 " ignoring -hls_enc\n");
1610 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1611 if (c->key_info_file) {
1612 if ((err = hls_encryption_start(s)) < 0)
1615 if ((err = do_encrypt(s, vs)) < 0)
1618 c->encrypt_started = 1;
1620 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1623 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1625 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1626 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1629 filename = av_asprintf("crypto:%s", oc->url);
1631 err = AVERROR(ENOMEM);
1634 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1636 av_dict_free(&options);
1639 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1640 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0) {
1641 if (c->ignore_io_errors)
1646 if (vs->vtt_basename) {
1647 set_http_options(s, &options, c);
1648 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1649 if (c->ignore_io_errors)
1654 av_dict_free(&options);
1656 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1657 /* We only require one PAT/PMT per segment. */
1658 if (oc->oformat->priv_class && oc->priv_data) {
1661 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1663 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1664 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1665 av_opt_set(oc->priv_data, "pat_period", period, 0);
1669 if (vs->vtt_basename) {
1670 err = avformat_write_header(vtt_oc,NULL);
1677 av_dict_free(&options);
1682 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1685 time_t t = time(NULL);
1686 struct tm *p, tmbuf;
1687 HLSContext *hls = s->priv_data;
1689 p = localtime_r(&t, &tmbuf);
1690 // no %s support when strftime returned error or left format string unchanged
1691 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1692 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1693 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1695 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1698 static int append_postfix(char *name, int name_buf_len, int i)
1701 char extension[10] = {'\0'};
1703 p = strrchr(name, '.');
1705 av_strlcpy(extension, p, sizeof(extension));
1709 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1711 if (strlen(extension))
1712 av_strlcat(name, extension, name_buf_len);
1717 static int validate_name(int nb_vs, const char *fn)
1719 const char *filename, *subdir_name;
1720 char *fn_dup = NULL;
1724 ret = AVERROR(EINVAL);
1728 fn_dup = av_strdup(fn);
1730 ret = AVERROR(ENOMEM);
1734 filename = av_basename(fn);
1735 subdir_name = av_dirname(fn_dup);
1737 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1738 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1740 ret = AVERROR(EINVAL);
1744 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1745 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1747 ret = AVERROR(EINVAL);
1756 static int format_name(char *buf, int buf_len, int index)
1758 const char *proto, *dir;
1759 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1762 if (!av_stristr(buf, "%v"))
1765 orig_buf_dup = av_strdup(buf);
1766 if (!orig_buf_dup) {
1767 ret = AVERROR(ENOMEM);
1771 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1772 ret = AVERROR(EINVAL);
1775 av_strlcpy(buf, mod_buf, buf_len);
1777 proto = avio_find_protocol_name(orig_buf_dup);
1778 dir = av_dirname(orig_buf_dup);
1780 /* if %v is present in the file's directory, create sub-directory */
1781 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1782 mod_buf_dup = av_strdup(buf);
1784 ret = AVERROR(ENOMEM);
1788 dir = av_dirname(mod_buf_dup);
1789 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1790 ret = AVERROR(errno);
1796 av_freep(&orig_buf_dup);
1797 av_freep(&mod_buf_dup);
1802 static int get_nth_codec_stream_index(AVFormatContext *s,
1803 enum AVMediaType codec_type,
1806 unsigned int stream_index, cnt;
1807 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1810 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1811 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1813 if (cnt == stream_id)
1814 return stream_index;
1820 static int parse_variant_stream_mapstring(AVFormatContext *s)
1822 HLSContext *hls = s->priv_data;
1825 enum AVMediaType codec_type;
1826 int nb_varstreams, nb_streams;
1827 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1831 * Expected format for var_stream_map string is as below:
1833 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,defalut:0 v:0,agroup:a0 v:1,agroup:a1"
1834 * This string specifies how to group the audio, video and subtitle streams
1835 * into different variant streams. The variant stream groups are separated
1838 * a:, v:, s: are keys to specify audio, video and subtitle streams
1839 * respectively. Allowed values are 0 to 9 digits (limited just based on
1842 * agroup: is key to specify audio group. A string can be given as value.
1844 p = av_strdup(hls->var_stream_map);
1846 while(av_strtok(q, " \t", &saveptr1)) {
1848 hls->nb_varstreams++;
1852 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1853 if (!hls->var_streams)
1854 return AVERROR(ENOMEM);
1856 p = hls->var_stream_map;
1858 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1861 if (nb_varstreams < hls->nb_varstreams) {
1862 vs = &(hls->var_streams[nb_varstreams]);
1863 vs->var_stream_idx = nb_varstreams;
1867 return AVERROR(EINVAL);
1870 while (q < varstr + strlen(varstr)) {
1871 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1872 !av_strncasecmp(q, "s:", 2))
1876 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1878 return AVERROR(ENOMEM);
1881 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1883 if (av_strstart(keyval, "language:", &val)) {
1884 vs->language = av_strdup(val);
1886 return AVERROR(ENOMEM);
1888 } else if (av_strstart(keyval, "default:", &val)) {
1889 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1890 (!av_strncasecmp(val, "1", strlen("1"))));
1891 hls->has_default_key = 1;
1893 } else if (av_strstart(keyval, "agroup:", &val)) {
1894 vs->agroup = av_strdup(val);
1896 return AVERROR(ENOMEM);
1898 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1899 vs->ccgroup = av_strdup(val);
1901 return AVERROR(ENOMEM);
1903 } else if (av_strstart(keyval, "v:", &val)) {
1904 codec_type = AVMEDIA_TYPE_VIDEO;
1905 hls->has_video_m3u8 = 1;
1906 } else if (av_strstart(keyval, "a:", &val)) {
1907 codec_type = AVMEDIA_TYPE_AUDIO;
1908 } else if (av_strstart(keyval, "s:", &val)) {
1909 codec_type = AVMEDIA_TYPE_SUBTITLE;
1911 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1912 return AVERROR(EINVAL);
1916 if (av_isdigit(*val))
1917 stream_index = get_nth_codec_stream_index (s, codec_type,
1920 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1921 vs->streams[nb_streams++] = s->streams[stream_index];
1923 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1924 return AVERROR(EINVAL);
1928 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1929 hls->nb_varstreams);
1934 static int parse_cc_stream_mapstring(AVFormatContext *s)
1936 HLSContext *hls = s->priv_data;
1938 char *p, *q, *ccstr, *keyval;
1939 char *saveptr1 = NULL, *saveptr2 = NULL;
1941 ClosedCaptionsStream *ccs;
1943 p = av_strdup(hls->cc_stream_map);
1945 while(av_strtok(q, " \t", &saveptr1)) {
1947 hls->nb_ccstreams++;
1951 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1952 if (!hls->cc_streams)
1953 return AVERROR(ENOMEM);
1955 p = hls->cc_stream_map;
1957 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1960 if (nb_ccstreams < hls->nb_ccstreams)
1961 ccs = &(hls->cc_streams[nb_ccstreams++]);
1963 return AVERROR(EINVAL);
1965 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1968 if (av_strstart(keyval, "ccgroup:", &val)) {
1969 ccs->ccgroup = av_strdup(val);
1971 return AVERROR(ENOMEM);
1972 } else if (av_strstart(keyval, "instreamid:", &val)) {
1973 ccs->instreamid = av_strdup(val);
1974 if (!ccs->instreamid)
1975 return AVERROR(ENOMEM);
1976 } else if (av_strstart(keyval, "language:", &val)) {
1977 ccs->language = av_strdup(val);
1979 return AVERROR(ENOMEM);
1981 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1982 return AVERROR(EINVAL);
1986 if (!ccs->ccgroup || !ccs->instreamid) {
1987 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1988 return AVERROR(EINVAL);
1991 if (av_strstart(ccs->instreamid, "CC", &val)) {
1992 if(atoi(val) < 1 || atoi(val) > 4) {
1993 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1994 atoi(val), ccs->instreamid);
1995 return AVERROR(EINVAL);
1997 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1998 if(atoi(val) < 1 || atoi(val) > 63) {
1999 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2000 atoi(val), ccs->instreamid);
2001 return AVERROR(EINVAL);
2004 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
2006 return AVERROR(EINVAL);
2013 static int update_variant_stream_info(AVFormatContext *s) {
2014 HLSContext *hls = s->priv_data;
2018 if (hls->cc_stream_map) {
2019 ret = parse_cc_stream_mapstring(s);
2024 if (hls->var_stream_map) {
2025 return parse_variant_stream_mapstring(s);
2027 //By default, a single variant stream with all the codec streams is created
2028 hls->nb_varstreams = 1;
2029 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
2030 hls->nb_varstreams);
2031 if (!hls->var_streams)
2032 return AVERROR(ENOMEM);
2034 hls->var_streams[0].var_stream_idx = 0;
2035 hls->var_streams[0].nb_streams = s->nb_streams;
2036 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2037 hls->var_streams[0].nb_streams);
2038 if (!hls->var_streams[0].streams)
2039 return AVERROR(ENOMEM);
2041 //by default, the first available ccgroup is mapped to the variant stream
2042 if (hls->nb_ccstreams) {
2043 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2044 if (!hls->var_streams[0].ccgroup)
2045 return AVERROR(ENOMEM);
2048 for (i = 0; i < s->nb_streams; i++)
2049 hls->var_streams[0].streams[i] = s->streams[i];
2054 static int update_master_pl_info(AVFormatContext *s) {
2055 HLSContext *hls = s->priv_data;
2057 char *fn1= NULL, *fn2 = NULL;
2060 fn1 = av_strdup(s->url);
2062 ret = AVERROR(ENOMEM);
2066 dir = av_dirname(fn1);
2069 * if output file's directory has %v, variants are created in sub-directories
2070 * then master is created at the sub-directories level
2072 if (dir && av_stristr(av_basename(dir), "%v")) {
2073 fn2 = av_strdup(dir);
2075 ret = AVERROR(ENOMEM);
2078 dir = av_dirname(fn2);
2081 if (dir && strcmp(dir, "."))
2082 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2084 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2086 if (!hls->master_m3u8_url) {
2087 ret = AVERROR(ENOMEM);
2098 static int hls_write_header(AVFormatContext *s)
2100 HLSContext *hls = s->priv_data;
2102 VariantStream *vs = NULL;
2104 for (i = 0; i < hls->nb_varstreams; i++) {
2105 vs = &hls->var_streams[i];
2107 ret = avformat_write_header(vs->avf, NULL);
2110 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2111 for (j = 0; j < vs->nb_streams; j++) {
2113 AVStream *outer_st = vs->streams[j];
2115 if (hls->max_seg_size > 0) {
2116 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2117 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2118 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2119 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2120 outer_st->codecpar->bit_rate, hls->max_seg_size);
2124 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2125 inner_st = vs->avf->streams[j];
2126 else if (vs->vtt_avf)
2127 inner_st = vs->vtt_avf->streams[0];
2129 /* We have a subtitle stream, when the user does not want one */
2133 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2134 write_codec_attr(outer_st, vs);
2137 /* Update the Codec Attr string for the mapped audio groups */
2138 if (vs->has_video && vs->agroup) {
2139 for (j = 0; j < hls->nb_varstreams; j++) {
2140 VariantStream *vs_agroup = &(hls->var_streams[j]);
2141 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2142 vs_agroup->agroup &&
2143 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2144 write_codec_attr(vs_agroup->streams[0], vs);
2153 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2155 HLSContext *hls = s->priv_data;
2156 AVFormatContext *oc = NULL;
2157 AVStream *st = s->streams[pkt->stream_index];
2158 int64_t end_pts = 0;
2160 int ret = 0, can_split = 1, i, j;
2161 int stream_index = 0;
2162 int range_length = 0;
2163 const char *proto = NULL;
2164 int use_temp_file = 0;
2165 uint8_t *buffer = NULL;
2166 VariantStream *vs = NULL;
2167 AVDictionary *options = NULL;
2168 char *old_filename = NULL;
2170 for (i = 0; i < hls->nb_varstreams; i++) {
2171 vs = &hls->var_streams[i];
2172 for (j = 0; j < vs->nb_streams; j++) {
2173 if (vs->streams[j] == st) {
2174 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2190 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2191 return AVERROR(ENOMEM);
2194 end_pts = hls->recording_time * vs->number;
2196 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2197 /* reset end_pts, hls->recording_time at end of the init hls list */
2198 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2199 int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2200 hls->recording_time = hls->time * AV_TIME_BASE;
2201 end_pts = init_list_dur + after_init_list_dur ;
2204 if (vs->start_pts == AV_NOPTS_VALUE) {
2205 vs->start_pts = pkt->pts;
2208 if (vs->has_video) {
2209 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2210 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2211 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2213 if (pkt->pts == AV_NOPTS_VALUE)
2214 is_ref_pkt = can_split = 0;
2217 if (vs->end_pts == AV_NOPTS_VALUE)
2218 vs->end_pts = pkt->pts;
2219 if (vs->new_start) {
2221 vs->duration = (double)(pkt->pts - vs->end_pts)
2222 * st->time_base.num / st->time_base.den;
2223 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2225 if (pkt->duration) {
2226 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2228 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2229 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2235 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2236 end_pts, AV_TIME_BASE_Q) >= 0) {
2237 int64_t new_start_pos;
2238 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2240 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2242 new_start_pos = avio_tell(vs->avf->pb);
2243 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2244 vs->size = new_start_pos - vs->start_pos;
2246 vs->size = new_start_pos;
2249 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2250 if (!vs->init_range_length) {
2252 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2253 avio_write(vs->out, buffer, range_length);
2255 vs->init_range_length = range_length;
2256 avio_open_dyn_buf(&oc->pb);
2257 vs->packets_written = 0;
2258 vs->start_pos = range_length;
2259 if (!byterange_mode) {
2260 ff_format_io_close(s, &vs->out);
2261 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2265 if (!byterange_mode) {
2266 hlsenc_io_close(s, &oc->pb, oc->url);
2269 if (!byterange_mode) {
2271 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2276 proto = avio_find_protocol_name(oc->url);
2277 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2280 // look to rename the asset name
2281 if (use_temp_file) {
2282 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2283 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2284 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2287 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2288 if (hls->flags & HLS_SINGLE_FILE) {
2289 ret = flush_dynbuf(vs, &range_length);
2293 vs->size = range_length;
2295 set_http_options(s, &options, hls);
2296 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options);
2298 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2299 "Failed to open file '%s'\n", vs->avf->url);
2300 return hls->ignore_io_errors ? 0 : ret;
2302 write_styp(vs->out);
2303 ret = flush_dynbuf(vs, &range_length);
2307 ff_format_io_close(s, &vs->out);
2311 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2312 hls_rename_temp_file(s, oc);
2315 old_filename = av_strdup(vs->avf->url);
2316 if (!old_filename) {
2317 return AVERROR(ENOMEM);
2320 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2321 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2322 vs->end_pts = pkt->pts;
2325 av_free(old_filename);
2330 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2331 vs->start_pos = new_start_pos;
2333 vs->start_pos += vs->size;
2336 if (hls->flags & HLS_SINGLE_FILE) {
2338 } else if (hls->max_seg_size > 0) {
2339 if (vs->start_pos >= hls->max_seg_size) {
2341 sls_flag_file_rename(hls, vs, old_filename);
2342 ret = hls_start(s, vs);
2344 /* When split segment by byte, the duration is short than hls_time,
2345 * so it is not enough one segment duration as hls_time, */
2350 sls_flag_file_rename(hls, vs, old_filename);
2351 ret = hls_start(s, vs);
2353 av_free(old_filename);
2359 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2360 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2361 if ((ret = hls_window(s, 0, vs)) < 0) {
2367 vs->packets_written++;
2369 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2370 if (hls->ignore_io_errors)
2377 static void hls_free_variant_streams(struct HLSContext *hls)
2380 AVFormatContext *vtt_oc = NULL;
2381 VariantStream *vs = NULL;
2383 for (i = 0; i < hls->nb_varstreams; i++) {
2384 vs = &hls->var_streams[i];
2385 vtt_oc = vs->vtt_avf;
2387 av_freep(&vs->basename);
2388 av_freep(&vs->base_output_dirname);
2389 av_freep(&vs->fmp4_init_filename);
2391 av_freep(&vs->vtt_basename);
2392 av_freep(&vs->vtt_m3u8_name);
2395 hls_free_segments(vs->segments);
2396 hls_free_segments(vs->old_segments);
2397 av_freep(&vs->m3u8_name);
2398 av_freep(&vs->streams);
2399 av_freep(&vs->agroup);
2400 av_freep(&vs->language);
2401 av_freep(&vs->ccgroup);
2402 av_freep(&vs->baseurl);
2406 static int hls_write_trailer(struct AVFormatContext *s)
2408 HLSContext *hls = s->priv_data;
2409 AVFormatContext *oc = NULL;
2410 AVFormatContext *vtt_oc = NULL;
2411 char *old_filename = NULL;
2412 const char *proto = NULL;
2413 int use_temp_file = 0;
2416 VariantStream *vs = NULL;
2418 for (i = 0; i < hls->nb_varstreams; i++) {
2419 vs = &hls->var_streams[i];
2422 vtt_oc = vs->vtt_avf;
2423 old_filename = av_strdup(vs->avf->url);
2426 if (!old_filename) {
2427 return AVERROR(ENOMEM);
2429 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2430 int range_length = 0;
2431 if (!vs->init_range_length) {
2432 uint8_t *buffer = NULL;
2433 int range_length, byterange_mode;
2434 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2437 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2438 avio_write(vs->out, buffer, range_length);
2440 vs->init_range_length = range_length;
2441 avio_open_dyn_buf(&oc->pb);
2442 vs->packets_written = 0;
2443 vs->start_pos = range_length;
2444 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2445 if (!byterange_mode) {
2446 ff_format_io_close(s, &vs->out);
2447 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2450 if (!(hls->flags & HLS_SINGLE_FILE)) {
2451 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2453 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2456 write_styp(vs->out);
2458 ret = flush_dynbuf(vs, &range_length);
2462 vs->size = range_length;
2463 ff_format_io_close(s, &vs->out);
2467 av_write_trailer(oc);
2470 proto = avio_find_protocol_name(oc->url);
2471 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2475 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2476 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2477 ff_format_io_close(s, &oc->pb);
2480 // rename that segment from .tmp to the real one
2481 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2482 hls_rename_temp_file(s, oc);
2483 av_free(old_filename);
2484 old_filename = av_strdup(vs->avf->url);
2486 if (!old_filename) {
2487 return AVERROR(ENOMEM);
2491 /* after av_write_trailer, then duration + 1 duration per packet */
2492 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2495 sls_flag_file_rename(hls, vs, old_filename);
2499 av_write_trailer(vtt_oc);
2500 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2501 ff_format_io_close(s, &vtt_oc->pb);
2502 avformat_free_context(vtt_oc);
2504 avformat_free_context(oc);
2507 hls_window(s, 1, vs);
2508 av_free(old_filename);
2511 hls_free_variant_streams(hls);
2513 for (i = 0; i < hls->nb_ccstreams; i++) {
2514 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2515 av_freep(&ccs->ccgroup);
2516 av_freep(&ccs->instreamid);
2517 av_freep(&ccs->language);
2520 ff_format_io_close(s, &hls->m3u8_out);
2521 ff_format_io_close(s, &hls->sub_m3u8_out);
2522 av_freep(&hls->key_basename);
2523 av_freep(&hls->var_streams);
2524 av_freep(&hls->cc_streams);
2525 av_freep(&hls->master_m3u8_url);
2530 static int hls_init(AVFormatContext *s)
2535 HLSContext *hls = s->priv_data;
2536 const char *pattern = "%d.ts";
2537 VariantStream *vs = NULL;
2538 int basename_size = 0;
2539 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2540 const char *vtt_pattern = "%d.vtt";
2542 int vtt_basename_size = 0;
2543 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2545 hls->has_default_key = 0;
2546 hls->has_video_m3u8 = 0;
2547 ret = update_variant_stream_info(s);
2549 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2553 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2554 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2555 ret = AVERROR(EINVAL);
2556 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2560 ret = validate_name(hls->nb_varstreams, s->url);
2564 if (hls->segment_filename) {
2565 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2570 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2571 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2576 if (hls->subtitle_filename) {
2577 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2582 if (hls->master_pl_name) {
2583 ret = update_master_pl_info(s);
2585 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2591 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2594 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2595 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2596 time_t t = time(NULL); // we will need it in either case
2597 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2598 hls->start_sequence = (int64_t)t;
2599 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2601 struct tm *p, tmbuf;
2602 if (!(p = localtime_r(&t, &tmbuf)))
2603 return AVERROR(ENOMEM);
2604 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2605 return AVERROR(ENOMEM);
2606 hls->start_sequence = strtoll(b, NULL, 10);
2608 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2611 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2612 for (i = 0; i < hls->nb_varstreams; i++) {
2613 vs = &hls->var_streams[i];
2615 vs->m3u8_name = av_strdup(s->url);
2616 if (!vs->m3u8_name ) {
2617 ret = AVERROR(ENOMEM);
2620 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2624 vs->sequence = hls->start_sequence;
2625 vs->start_pts = AV_NOPTS_VALUE;
2626 vs->end_pts = AV_NOPTS_VALUE;
2627 vs->current_segment_final_filename_fmt[0] = '\0';
2629 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2630 // Independent segments cannot be guaranteed when splitting by time
2631 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2632 av_log(s, AV_LOG_WARNING,
2633 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2634 "Disabling 'independent_segments' flag\n");
2637 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2640 vs->initial_prog_date_time = now0;
2642 if (hls->format_options_str) {
2643 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2645 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2650 for (j = 0; j < vs->nb_streams; j++) {
2651 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2652 /* Get one video stream to reference for split segments
2653 * so use the first video stream index. */
2654 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2655 vs->reference_stream_index = vs->streams[j]->index;
2657 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2660 if (vs->has_video > 1)
2661 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2662 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2663 vs->oformat = av_guess_format("mp4", NULL, NULL);
2665 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2669 ret = AVERROR_MUXER_NOT_FOUND;
2673 if (vs->has_subtitle) {
2674 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2676 ret = AVERROR_MUXER_NOT_FOUND;
2680 if (hls->segment_filename) {
2681 basename_size = strlen(hls->segment_filename) + 1;
2682 vs->basename = av_malloc(basename_size);
2683 if (!vs->basename) {
2684 ret = AVERROR(ENOMEM);
2688 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2689 ret = format_name(vs->basename, basename_size, i);
2693 if (hls->flags & HLS_SINGLE_FILE) {
2694 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2701 if (hls->use_localtime) {
2702 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2704 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2707 vs->basename = av_malloc(basename_size);
2708 if (!vs->basename) {
2709 ret = AVERROR(ENOMEM);
2713 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2715 p = strrchr(vs->basename, '.');
2718 if (hls->use_localtime) {
2719 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2721 av_strlcat(vs->basename, pattern, basename_size);
2725 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2726 if (hls->nb_varstreams > 1)
2727 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2728 if (hls->flags & HLS_SINGLE_FILE) {
2729 vs->fmp4_init_filename = av_strdup(vs->basename);
2730 if (!vs->fmp4_init_filename) {
2731 ret = AVERROR(ENOMEM);
2735 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2736 if (!vs->fmp4_init_filename ) {
2737 ret = AVERROR(ENOMEM);
2740 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2741 fmp4_init_filename_len);
2742 if (hls->nb_varstreams > 1) {
2743 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2744 format_name(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2746 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2752 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2753 strlen(vs->fmp4_init_filename) + 1;
2755 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2756 if (!vs->base_output_dirname) {
2757 ret = AVERROR(ENOMEM);
2761 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2762 fmp4_init_filename_len);
2763 p = strrchr(vs->base_output_dirname, '/');
2766 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2767 fmp4_init_filename_len);
2769 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2770 fmp4_init_filename_len);
2775 if (!hls->use_localtime) {
2776 ret = sls_flag_check_duration_size_index(hls);
2781 ret = sls_flag_check_duration_size(hls, vs);
2786 if (vs->has_subtitle) {
2788 if (hls->flags & HLS_SINGLE_FILE)
2789 vtt_pattern = ".vtt";
2790 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2792 vs->vtt_basename = av_malloc(vtt_basename_size);
2793 if (!vs->vtt_basename) {
2794 ret = AVERROR(ENOMEM);
2797 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2798 if (!vs->vtt_m3u8_name ) {
2799 ret = AVERROR(ENOMEM);
2802 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2803 p = strrchr(vs->vtt_basename, '.');
2807 if ( hls->subtitle_filename ) {
2808 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2809 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2813 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2814 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2816 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2820 vs->baseurl = av_strdup(hls->baseurl);
2822 ret = AVERROR(ENOMEM);
2827 if ((ret = hls_mux_init(s, vs)) < 0)
2830 if (hls->flags & HLS_APPEND_LIST) {
2831 parse_playlist(s, vs->m3u8_name, vs);
2832 vs->discontinuity = 1;
2833 if (hls->init_time > 0) {
2834 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2835 " hls_init_time value will have no effect\n");
2837 hls->recording_time = hls->time * AV_TIME_BASE;
2841 if ((ret = hls_start(s, vs)) < 0)
2847 av_freep(&hls->key_basename);
2848 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2849 vs = &hls->var_streams[i];
2850 av_freep(&vs->basename);
2851 av_freep(&vs->vtt_basename);
2852 av_freep(&vs->fmp4_init_filename);
2853 av_freep(&vs->m3u8_name);
2854 av_freep(&vs->vtt_m3u8_name);
2855 av_freep(&vs->streams);
2856 av_freep(&vs->language);
2857 av_freep(&vs->agroup);
2858 av_freep(&vs->ccgroup);
2859 av_freep(&vs->baseurl);
2861 avformat_free_context(vs->avf);
2863 avformat_free_context(vs->vtt_avf);
2865 for (i = 0; i < hls->nb_ccstreams; i++) {
2866 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2867 av_freep(&ccs->ccgroup);
2868 av_freep(&ccs->instreamid);
2869 av_freep(&ccs->language);
2871 av_freep(&hls->var_streams);
2872 av_freep(&hls->cc_streams);
2873 av_freep(&hls->master_m3u8_url);
2879 #define OFFSET(x) offsetof(HLSContext, x)
2880 #define E AV_OPT_FLAG_ENCODING_PARAM
2881 static const AVOption options[] = {
2882 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2883 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2884 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2885 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2886 {"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},
2887 {"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},
2888 {"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},
2890 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2892 {"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},
2893 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2894 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2895 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2896 {"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},
2897 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2898 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2899 {"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},
2900 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2901 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2902 {"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"},
2903 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2904 {"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"},
2905 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2906 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2907 {"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"},
2908 {"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"},
2909 {"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"},
2910 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2911 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2912 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2913 {"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"},
2914 {"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"},
2915 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2916 {"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"},
2917 {"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"},
2918 {"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"},
2919 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2920 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2921 #if FF_API_HLS_USE_LOCALTIME
2922 {"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 },
2924 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2925 #if FF_API_HLS_USE_LOCALTIME
2926 {"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 },
2928 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2929 {"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" },
2930 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2931 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2932 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2933 {"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" },
2934 {"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" },
2935 {"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" },
2936 {"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" },
2937 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2938 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2939 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2940 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2941 {"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},
2942 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2943 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2944 {"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 },
2948 static const AVClass hls_class = {
2949 .class_name = "hls muxer",
2950 .item_name = av_default_item_name,
2952 .version = LIBAVUTIL_VERSION_INT,
2956 AVOutputFormat ff_hls_muxer = {
2958 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2959 .extensions = "m3u8",
2960 .priv_data_size = sizeof(HLSContext),
2961 .audio_codec = AV_CODEC_ID_AAC,
2962 .video_codec = AV_CODEC_ID_H264,
2963 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2964 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2966 .write_header = hls_write_header,
2967 .write_packet = hls_write_packet,
2968 .write_trailer = hls_write_trailer,
2969 .priv_class = &hls_class,