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.h"
45 #include "libavutil/time_internal.h"
48 #include "avio_internal.h"
49 #if CONFIG_HTTP_PROTOCOL
52 #include "hlsplaylist.h"
54 #include "os_support.h"
57 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
58 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
59 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
60 HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
61 HLS_START_SEQUENCE_LAST, // unused
62 } StartSequenceSourceType;
65 CODEC_ATTRIBUTE_WRITTEN = 0,
66 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
67 } CodecAttributeStatus;
70 #define LINE_BUFFER_SIZE MAX_URL_SIZE
71 #define HLS_MICROSECOND_UNIT 1000000
72 #define POSTFIX_PATTERN "_%d"
74 typedef struct HLSSegment {
75 char filename[MAX_URL_SIZE];
76 char sub_filename[MAX_URL_SIZE];
77 double duration; /* in seconds */
82 int64_t keyframe_size;
83 unsigned var_stream_idx;
85 char key_uri[LINE_BUFFER_SIZE + 1];
86 char iv_string[KEYSIZE*2 + 1];
88 struct HLSSegment *next;
91 typedef enum HLSFlags {
92 // Generate a single media file and use byte ranges in the playlist.
93 HLS_SINGLE_FILE = (1 << 0),
94 HLS_DELETE_SEGMENTS = (1 << 1),
95 HLS_ROUND_DURATIONS = (1 << 2),
96 HLS_DISCONT_START = (1 << 3),
97 HLS_OMIT_ENDLIST = (1 << 4),
98 HLS_SPLIT_BY_TIME = (1 << 5),
99 HLS_APPEND_LIST = (1 << 6),
100 HLS_PROGRAM_DATE_TIME = (1 << 7),
101 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
102 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
103 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
104 HLS_TEMP_FILE = (1 << 11),
105 HLS_PERIODIC_REKEY = (1 << 12),
106 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
107 HLS_I_FRAMES_ONLY = (1 << 14),
115 typedef struct VariantStream {
116 unsigned var_stream_idx;
119 ff_const59 AVOutputFormat *oformat;
120 ff_const59 AVOutputFormat *vtt_oformat;
123 int init_range_length;
124 uint8_t *temp_buffer;
125 uint8_t *init_buffer;
127 AVFormatContext *avf;
128 AVFormatContext *vtt_avf;
133 int start_pts_from_audio;
134 double dpp; // duration per packet
137 int64_t video_lastpos;
138 int64_t video_keyframe_pos;
139 int64_t video_keyframe_size;
140 double duration; // last segment duration computed so far, in seconds
141 int64_t start_pos; // last segment starting position
142 int64_t size; // last segment size
144 int discontinuity_set;
146 int reference_stream_index;
148 HLSSegment *segments;
149 HLSSegment *last_segment;
150 HLSSegment *old_segments;
157 double initial_prog_date_time;
158 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
160 char *fmp4_init_filename;
161 char *base_output_dirname;
164 char codec_attr[128];
165 CodecAttributeStatus attr_status;
166 unsigned int nb_streams;
167 int m3u8_created; /* status of media play-list creation */
168 int is_default; /* default status of audio group */
169 char *language; /* audio lauguage name */
170 char *agroup; /* audio group name */
171 char *sgroup; /* subtitle group name */
172 char *ccgroup; /* closed caption group name */
174 char *varname; // variant name
177 typedef struct ClosedCaptionsStream {
178 char *ccgroup; /* closed caption group name */
179 char *instreamid; /* closed captions INSTREAM-ID */
180 char *language; /* closed captions langauge */
181 } ClosedCaptionsStream;
183 typedef struct HLSContext {
184 const AVClass *class; // Class for private options.
185 int64_t start_sequence;
186 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
188 float time; // Set by a private option.
189 float init_time; // Set by a private option.
190 int max_nb_segments; // Set by a private option.
191 int hls_delete_threshold; // Set by a private option.
193 int wrap; // Set by a private option.
195 uint32_t flags; // enum HLSFlags
196 uint32_t pl_type; // enum PlaylistType
197 char *segment_filename;
198 char *fmp4_init_filename;
200 int resend_init_file; ///< resend init file into disk after refresh m3u8
202 int use_localtime; ///< flag to expand filename with localtime
203 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
205 int64_t recording_time;
206 int64_t max_seg_size; // every segment file max size
209 char *vtt_format_options_str;
210 char *subtitle_filename;
211 AVDictionary *format_options;
221 char key_file[LINE_BUFFER_SIZE + 1];
222 char key_uri[LINE_BUFFER_SIZE + 1];
223 char key_string[KEYSIZE*2 + 1];
224 char iv_string[KEYSIZE*2 + 1];
225 AVDictionary *vtt_format_options;
230 VariantStream *var_streams;
231 unsigned int nb_varstreams;
232 ClosedCaptionsStream *cc_streams;
233 unsigned int nb_ccstreams;
235 int master_m3u8_created; /* status of master play-list creation */
236 char *master_m3u8_url; /* URL of the master m3u8 file */
237 int version; /* HLS version */
238 char *var_stream_map; /* user specified variant stream map string */
239 char *cc_stream_map; /* user specified closed caption streams map string */
240 char *master_pl_name;
241 unsigned int master_publish_rate;
243 AVIOContext *m3u8_out;
244 AVIOContext *sub_m3u8_out;
246 int ignore_io_errors;
248 int has_default_key; /* has DEFAULT field of var_stream_map */
249 int has_video_m3u8; /* has video stream m3u8 list */
252 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
253 AVDictionary **options)
255 HLSContext *hls = s->priv_data;
256 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
257 int err = AVERROR_MUXER_NOT_FOUND;
258 if (!*pb || !http_base_proto || !hls->http_persistent) {
259 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
260 #if CONFIG_HTTP_PROTOCOL
262 URLContext *http_url_context = ffio_geturlcontext(*pb);
263 av_assert0(http_url_context);
264 err = ff_http_do_new_request(http_url_context, filename);
266 ff_format_io_close(s, pb);
273 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
275 HLSContext *hls = s->priv_data;
276 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
280 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
281 ff_format_io_close(s, pb);
282 #if CONFIG_HTTP_PROTOCOL
284 URLContext *http_url_context = ffio_geturlcontext(*pb);
285 av_assert0(http_url_context);
287 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
288 ret = ff_http_get_shutdown_status(http_url_context);
294 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
296 int http_base_proto = ff_is_http_proto(s->url);
299 av_dict_set(options, "method", c->method, 0);
300 } else if (http_base_proto) {
301 av_dict_set(options, "method", "PUT", 0);
304 av_dict_set(options, "user_agent", c->user_agent, 0);
305 if (c->http_persistent)
306 av_dict_set_int(options, "multiple_requests", 1, 0);
308 av_dict_set_int(options, "timeout", c->timeout, 0);
310 av_dict_set(options, "headers", c->headers, 0);
313 static void write_codec_attr(AVStream *st, VariantStream *vs)
315 int codec_strlen = strlen(vs->codec_attr);
318 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
320 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
323 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
324 uint8_t *data = st->codecpar->extradata;
325 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
326 snprintf(attr, sizeof(attr),
327 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
331 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
332 snprintf(attr, sizeof(attr), "mp4a.40.33");
333 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
334 snprintf(attr, sizeof(attr), "mp4a.40.34");
335 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
336 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
337 snprintf(attr, sizeof(attr), "mp4a.40.2");
338 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
339 snprintf(attr, sizeof(attr), "ac-3");
340 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
341 snprintf(attr, sizeof(attr), "ec-3");
345 // Don't write the same attribute multiple times
346 if (!av_stristr(vs->codec_attr, attr)) {
347 snprintf(vs->codec_attr + codec_strlen,
348 sizeof(vs->codec_attr) - codec_strlen,
349 "%s%s", codec_strlen ? "," : "", attr);
354 vs->codec_attr[0] = '\0';
355 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
359 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
368 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
375 if (c == '%' && *(p+1) == '%') // %%
377 else if (c == '%' && *(p+1) == placeholder) {
378 av_bprintf(&buf, "%s", datastring);
385 if (addchar_count > 0) {
386 av_bprint_append_data(&buf, p, addchar_count);
390 if (!av_bprint_is_complete(&buf)) {
391 av_bprint_finalize(&buf, NULL);
394 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
400 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
405 int nd, addchar_count;
409 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
416 if (c == '%' && *(p+1) == '%') // %%
418 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
421 while (av_isdigit(*(p + addchar_count))) {
422 nd = nd * 10 + *(p + addchar_count) - '0';
426 if (*(p + addchar_count) == placeholder) {
427 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
428 p += (addchar_count + 1);
436 av_bprint_append_data(&buf, p, addchar_count);
439 if (!av_bprint_is_complete(&buf)) {
440 av_bprint_finalize(&buf, NULL);
443 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
449 static void write_styp(AVIOContext *pb)
452 ffio_wfourcc(pb, "styp");
453 ffio_wfourcc(pb, "msdh");
454 avio_wb32(pb, 0); /* minor */
455 ffio_wfourcc(pb, "msdh");
456 ffio_wfourcc(pb, "msix");
459 static int flush_dynbuf(VariantStream *vs, int *range_length)
461 AVFormatContext *ctx = vs->avf;
464 return AVERROR(EINVAL);
468 av_write_frame(ctx, NULL);
471 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
473 avio_write(vs->out, vs->temp_buffer, *range_length);
477 return avio_open_dyn_buf(&ctx->pb);
480 static void reflush_dynbuf(VariantStream *vs, int *range_length)
483 avio_write(vs->out, vs->temp_buffer, *range_length);
487 #define SEPARATOR '\\'
489 #define SEPARATOR '/'
492 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
493 const char *path, const char *proto)
495 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
496 AVDictionary *opt = NULL;
497 AVIOContext *out = NULL;
499 av_dict_set(&opt, "method", "DELETE", 0);
500 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
503 return hls->ignore_io_errors ? 1 : ret;
504 ff_format_io_close(avf, &out);
505 } else if (unlink(path) < 0) {
506 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
507 path, strerror(errno));
512 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
516 HLSSegment *segment, *previous_segment = NULL;
517 float playlist_duration = 0.0f;
521 char *dirname = NULL;
522 char *dirname_r = NULL;
523 char *dirname_repl = NULL;
524 char *vtt_dirname = NULL;
525 char *vtt_dirname_r = NULL;
526 const char *proto = NULL;
528 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
530 segment = vs->segments;
532 playlist_duration += segment->duration;
533 segment = segment->next;
536 segment = vs->old_segments;
539 playlist_duration -= segment->duration;
540 previous_segment = segment;
541 segment = previous_segment->next;
543 if (playlist_duration <= -previous_segment->duration) {
544 previous_segment->next = NULL;
547 if (segment_cnt >= hls->hls_delete_threshold) {
548 previous_segment->next = NULL;
553 if (segment && !hls->use_localtime_mkdir) {
554 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
555 dirname = (char*)av_dirname(dirname_r);
558 /* if %v is present in the file's directory
559 * all segment belongs to the same variant, so do it only once before the loop*/
560 if (dirname && av_stristr(dirname, "%v")) {
562 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
563 ret = AVERROR(EINVAL);
567 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
568 ret = AVERROR(EINVAL);
573 dirname = dirname_repl;
577 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
579 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
580 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
581 av_bprintf(&path, "%s", segment->filename);
583 if (!av_bprint_is_complete(&path)) {
584 ret = AVERROR(ENOMEM);
588 proto = avio_find_protocol_name(s->url);
589 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
592 if ((segment->sub_filename[0] != '\0')) {
593 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
594 vtt_dirname = (char*)av_dirname(vtt_dirname_r);
596 av_bprint_clear(&path);
597 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
598 segment->sub_filename);
599 av_freep(&vtt_dirname_r);
601 if (!av_bprint_is_complete(&path)) {
602 ret = AVERROR(ENOMEM);
606 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
609 av_bprint_clear(&path);
610 previous_segment = segment;
611 segment = previous_segment->next;
612 av_freep(&previous_segment);
616 av_bprint_finalize(&path, NULL);
617 av_freep(&dirname_r);
618 av_freep(&dirname_repl);
623 static int randomize(uint8_t *buf, int len)
626 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
629 if (RAND_bytes(buf, len))
632 return AVERROR(ENOSYS);
634 return AVERROR(EINVAL);
637 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
639 HLSContext *hls = s->priv_data;
643 uint8_t key[KEYSIZE];
644 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
646 len = strlen(key_basename_source) + 4 + 1;
647 hls->key_basename = av_mallocz(len);
648 if (!hls->key_basename)
649 return AVERROR(ENOMEM);
651 av_strlcpy(hls->key_basename, key_basename_source, len);
652 av_strlcat(hls->key_basename, ".key", len);
655 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
656 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
658 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
659 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
662 if (!*hls->iv_string) {
663 uint8_t iv[16] = { 0 };
667 AV_WB64(iv + 8, vs->sequence);
669 memcpy(iv, hls->iv, sizeof(iv));
671 ff_data_to_hex(buf, iv, sizeof(iv), 0);
673 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
676 if (!*hls->key_uri) {
677 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
678 return AVERROR(EINVAL);
681 if (!*hls->key_file) {
682 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
683 return AVERROR(EINVAL);
686 if (!*hls->key_string) {
687 AVDictionary *options = NULL;
689 if ((ret = randomize(key, sizeof(key))) < 0) {
690 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
694 memcpy(key, hls->key, sizeof(key));
697 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
698 set_http_options(s, &options, hls);
699 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
700 av_dict_free(&options);
703 avio_seek(pb, 0, SEEK_CUR);
704 avio_write(pb, key, KEYSIZE);
711 static int hls_encryption_start(AVFormatContext *s)
713 HLSContext *hls = s->priv_data;
716 uint8_t key[KEYSIZE];
717 AVDictionary *options = NULL;
719 set_http_options(s, &options, hls);
720 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
721 av_dict_free(&options);
723 av_log(hls, AV_LOG_ERROR,
724 "error opening key info file %s\n", hls->key_info_file);
728 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
729 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
731 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
732 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
734 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
735 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
737 ff_format_io_close(s, &pb);
739 if (!*hls->key_uri) {
740 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
741 return AVERROR(EINVAL);
744 if (!*hls->key_file) {
745 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
746 return AVERROR(EINVAL);
749 set_http_options(s, &options, hls);
750 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, &options);
751 av_dict_free(&options);
753 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
757 ret = avio_read(pb, key, sizeof(key));
758 ff_format_io_close(s, &pb);
759 if (ret != sizeof(key)) {
760 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
761 if (ret >= 0 || ret == AVERROR_EOF)
762 ret = AVERROR(EINVAL);
765 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
770 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
772 AVDictionary *options = NULL;
773 HLSContext *hls = s->priv_data;
775 AVFormatContext *vtt_oc = NULL;
776 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
777 int remaining_options;
780 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
785 oc->url = av_strdup("");
787 return AVERROR(ENOMEM);
789 oc->oformat = vs->oformat;
790 oc->interrupt_callback = s->interrupt_callback;
791 oc->max_delay = s->max_delay;
792 oc->opaque = s->opaque;
793 oc->io_open = s->io_open;
794 oc->io_close = s->io_close;
795 oc->strict_std_compliance = s->strict_std_compliance;
796 av_dict_copy(&oc->metadata, s->metadata, 0);
798 if (vs->vtt_oformat) {
799 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
802 vtt_oc = vs->vtt_avf;
803 vtt_oc->oformat = vs->vtt_oformat;
804 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
807 for (i = 0; i < vs->nb_streams; i++) {
809 AVFormatContext *loc;
810 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
815 if (!(st = avformat_new_stream(loc, NULL)))
816 return AVERROR(ENOMEM);
817 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
818 if (!oc->oformat->codec_tag ||
819 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
820 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
821 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
823 st->codecpar->codec_tag = 0;
826 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
827 st->time_base = vs->streams[i]->time_base;
828 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
831 vs->packets_written = 1;
835 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
836 if (hls->http_persistent > 0) {
837 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
838 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
840 if (hls->max_seg_size > 0) {
841 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
842 return AVERROR_PATCHWELCOME;
846 vs->packets_written = 0;
847 vs->init_range_length = 0;
849 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
852 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
853 set_http_options(s, &options, hls);
854 if (byterange_mode) {
855 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
857 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
859 av_dict_free(&options);
862 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
866 av_dict_copy(&options, hls->format_options, 0);
867 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
868 av_dict_set(&options, "fflags", "-autobsf", 0);
869 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
871 /* We only require one PAT/PMT per segment. */
873 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
874 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
875 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
877 ret = avformat_init_output(oc, &options);
878 remaining_options = av_dict_count(options);
879 av_dict_free(&options);
882 if (remaining_options) {
883 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
884 return AVERROR(EINVAL);
890 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
893 if (!av_strcasecmp(segment->filename,filename))
895 segment = segment->next;
897 return (HLSSegment *) NULL;
900 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
901 VariantStream *vs, HLSSegment *en,
902 double duration, int64_t pos, int64_t size)
904 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
905 strlen(vs->current_segment_final_filename_fmt)) {
906 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
908 return AVERROR(ENOMEM);
910 ff_format_set_url(vs->avf, new_url);
911 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
912 char *filename = NULL;
913 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
914 av_log(hls, AV_LOG_ERROR,
915 "Invalid second level segment filename template '%s', "
916 "you can try to remove second_level_segment_size flag\n",
919 return AVERROR(EINVAL);
921 ff_format_set_url(vs->avf, filename);
923 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
924 char *filename = NULL;
925 if (replace_int_data_in_filename(&filename, vs->avf->url,
926 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
927 av_log(hls, AV_LOG_ERROR,
928 "Invalid second level segment filename template '%s', "
929 "you can try to remove second_level_segment_time flag\n",
932 return AVERROR(EINVAL);
934 ff_format_set_url(vs->avf, filename);
940 static int sls_flag_check_duration_size_index(HLSContext *hls)
944 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
945 av_log(hls, AV_LOG_ERROR,
946 "second_level_segment_duration hls_flag requires strftime to be true\n");
947 ret = AVERROR(EINVAL);
949 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
950 av_log(hls, AV_LOG_ERROR,
951 "second_level_segment_size hls_flag requires strfime to be true\n");
952 ret = AVERROR(EINVAL);
954 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
955 av_log(hls, AV_LOG_ERROR,
956 "second_level_segment_index hls_flag requires strftime to be true\n");
957 ret = AVERROR(EINVAL);
963 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
965 const char *proto = avio_find_protocol_name(vs->basename);
966 int segment_renaming_ok = proto && !strcmp(proto, "file");
969 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
970 av_log(hls, AV_LOG_ERROR,
971 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
972 ret = AVERROR(EINVAL);
974 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
975 av_log(hls, AV_LOG_ERROR,
976 "second_level_segment_size hls_flag works only with file protocol segment names\n");
977 ret = AVERROR(EINVAL);
983 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
984 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
985 strlen(vs->current_segment_final_filename_fmt)) {
986 ff_rename(old_filename, vs->avf->url, hls);
990 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
992 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
993 char *filename = NULL;
994 if (replace_int_data_in_filename(&filename,
996 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
998 oc->url, 'd', vs->sequence) < 1) {
1000 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1001 "you can try to remove second_level_segment_index flag\n",
1003 av_freep(&filename);
1004 return AVERROR(EINVAL);
1006 ff_format_set_url(oc, filename);
1008 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1009 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1010 sizeof(vs->current_segment_final_filename_fmt));
1011 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1012 char *filename = NULL;
1013 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1014 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1015 "you can try to remove second_level_segment_size flag\n",
1017 av_freep(&filename);
1018 return AVERROR(EINVAL);
1020 ff_format_set_url(oc, filename);
1022 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1023 char *filename = NULL;
1024 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1025 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1026 "you can try to remove second_level_segment_time flag\n",
1028 av_freep(&filename);
1029 return AVERROR(EINVAL);
1031 ff_format_set_url(oc, filename);
1037 /* Create a new segment and append it to the segment list */
1038 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1039 VariantStream *vs, double duration, int64_t pos,
1042 HLSSegment *en = av_malloc(sizeof(*en));
1043 const char *filename;
1044 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1048 return AVERROR(ENOMEM);
1050 en->var_stream_idx = vs->var_stream_idx;
1051 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1057 filename = av_basename(vs->avf->url);
1059 if (hls->use_localtime_mkdir) {
1060 filename = vs->avf->url;
1062 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1063 && !byterange_mode) {
1064 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1066 av_strlcpy(en->filename, filename, sizeof(en->filename));
1068 if (vs->has_subtitle)
1069 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1071 en->sub_filename[0] = '\0';
1073 en->duration = duration;
1076 en->keyframe_pos = vs->video_keyframe_pos;
1077 en->keyframe_size = vs->video_keyframe_size;
1081 if (vs->discontinuity) {
1083 vs->discontinuity = 0;
1086 if (hls->key_info_file || hls->encrypt) {
1087 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1088 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1094 vs->last_segment->next = en;
1096 vs->last_segment = en;
1098 // EVENT or VOD playlists imply sliding window cannot be used
1099 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1100 hls->max_nb_segments = 0;
1102 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1104 vs->initial_prog_date_time += en->duration;
1105 vs->segments = en->next;
1106 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1108 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1110 !(hls->flags & HLS_SINGLE_FILE)) {
1112 en->next = vs->old_segments;
1113 vs->old_segments = en;
1114 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1121 if (hls->max_seg_size > 0) {
1129 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1131 HLSContext *hls = s->priv_data;
1133 int ret = 0, is_segment = 0;
1134 int64_t new_start_pos;
1135 char line[MAX_URL_SIZE];
1139 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1140 &s->interrupt_callback, NULL,
1141 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1144 ff_get_chomp_line(in, line, sizeof(line));
1145 if (strcmp(line, "#EXTM3U")) {
1146 ret = AVERROR_INVALIDDATA;
1150 vs->discontinuity = 0;
1151 while (!avio_feof(in)) {
1152 ff_get_chomp_line(in, line, sizeof(line));
1153 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1154 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1155 if (tmp_sequence < vs->sequence)
1156 av_log(hls, AV_LOG_VERBOSE,
1157 "Found playlist sequence number was smaller """
1158 "than specified start sequence number: %"PRId64" < %"PRId64", "
1159 "omitting\n", tmp_sequence, hls->start_sequence);
1161 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1162 vs->sequence = tmp_sequence;
1164 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1166 vs->discontinuity = 1;
1167 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1169 vs->duration = atof(ptr);
1170 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1171 ptr = av_stristr(line, "URI=\"");
1173 ptr += strlen("URI=\"");
1174 end = av_stristr(ptr, ",");
1176 av_strlcpy(hls->key_uri, ptr, end - ptr);
1178 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1182 ptr = av_stristr(line, "IV=0x");
1184 ptr += strlen("IV=0x");
1185 end = av_stristr(ptr, ",");
1187 av_strlcpy(hls->iv_string, ptr, end - ptr);
1189 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1193 } else if (av_strstart(line, "#", NULL)) {
1195 } else if (line[0]) {
1197 char *new_file = av_strdup(line);
1199 ret = AVERROR(ENOMEM);
1202 ff_format_set_url(vs->avf, new_file);
1204 new_start_pos = avio_tell(vs->avf->pb);
1205 vs->size = new_start_pos - vs->start_pos;
1206 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1207 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1210 vs->start_pos = new_start_pos;
1220 static void hls_free_segments(HLSSegment *p)
1231 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1233 size_t len = strlen(oc->url);
1234 char *final_filename = av_strdup(oc->url);
1237 if (!final_filename)
1238 return AVERROR(ENOMEM);
1239 final_filename[len-4] = '\0';
1240 ret = ff_rename(oc->url, final_filename, s);
1241 oc->url[len-4] = '\0';
1242 av_freep(&final_filename);
1246 static const char* get_relative_url(const char *master_url, const char *media_url)
1248 const char *p = strrchr(master_url, '/');
1249 size_t base_len = 0;
1251 if (!p) p = strrchr(master_url, '\\');
1254 base_len = p - master_url;
1255 if (av_strncasecmp(master_url, media_url, base_len)) {
1256 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1263 return media_url + base_len + 1;
1266 static int64_t get_stream_bit_rate(AVStream *stream)
1268 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1270 AV_PKT_DATA_CPB_PROPERTIES,
1274 if (stream->codecpar->bit_rate)
1275 return stream->codecpar->bit_rate;
1277 return props->max_bitrate;
1282 static int create_master_playlist(AVFormatContext *s,
1283 VariantStream * const input_vs)
1285 HLSContext *hls = s->priv_data;
1286 VariantStream *vs, *temp_vs;
1287 AVStream *vid_st, *aud_st;
1288 AVDictionary *options = NULL;
1291 const char *m3u8_rel_name = NULL;
1292 const char *vtt_m3u8_rel_name = NULL;
1294 char *sgroup = NULL;
1295 ClosedCaptionsStream *ccs;
1296 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1297 int is_file_proto = proto && !strcmp(proto, "file");
1298 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1299 char temp_filename[MAX_URL_SIZE];
1301 input_vs->m3u8_created = 1;
1302 if (!hls->master_m3u8_created) {
1303 /* For the first time, wait until all the media playlists are created */
1304 for (i = 0; i < hls->nb_varstreams; i++)
1305 if (!hls->var_streams[i].m3u8_created)
1308 /* Keep publishing the master playlist at the configured rate */
1309 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1310 input_vs->number % hls->master_publish_rate)
1314 set_http_options(s, &options, hls);
1315 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1316 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1317 av_dict_free(&options);
1319 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1324 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1326 for (i = 0; i < hls->nb_ccstreams; i++) {
1327 ccs = &(hls->cc_streams[i]);
1328 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1329 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1330 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1332 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1333 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1336 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1337 for (i = 0; i < hls->nb_varstreams; i++) {
1338 vs = &(hls->var_streams[i]);
1340 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1343 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1344 if (!m3u8_rel_name) {
1345 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1349 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1352 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1353 for (i = 0; i < hls->nb_varstreams; i++) {
1354 vs = &(hls->var_streams[i]);
1356 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1357 if (!m3u8_rel_name) {
1358 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1364 for (j = 0; j < vs->nb_streams; j++) {
1365 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1366 vid_st = vs->streams[j];
1367 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1368 aud_st = vs->streams[j];
1371 if (!vid_st && !aud_st) {
1372 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1377 * Traverse through the list of audio only rendition streams and find
1378 * the rendition which has highest bitrate in the same audio group
1381 for (j = 0; j < hls->nb_varstreams; j++) {
1382 temp_vs = &(hls->var_streams[j]);
1383 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1385 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1387 aud_st = temp_vs->streams[0];
1388 if (temp_vs->streams[0]->codecpar->bit_rate >
1389 aud_st->codecpar->bit_rate)
1390 aud_st = temp_vs->streams[0];
1397 bandwidth += get_stream_bit_rate(vid_st);
1399 bandwidth += get_stream_bit_rate(aud_st);
1400 bandwidth += bandwidth / 10;
1403 if (vid_st && vs->ccgroup) {
1404 /* check if this group name is available in the cc map string */
1405 for (j = 0; j < hls->nb_ccstreams; j++) {
1406 ccs = &(hls->cc_streams[j]);
1407 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1408 ccgroup = vs->ccgroup;
1412 if (j == hls->nb_ccstreams)
1413 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1417 if (vid_st && vs->sgroup) {
1418 sgroup = vs->sgroup;
1419 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1420 if (!vtt_m3u8_rel_name) {
1421 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1425 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1428 if (!hls->has_default_key || !hls->has_video_m3u8) {
1429 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1430 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1433 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1434 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1440 hls->master_m3u8_created = 1;
1441 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1443 ff_rename(temp_filename, hls->master_m3u8_url, s);
1448 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1450 HLSContext *hls = s->priv_data;
1452 int target_duration = 0;
1454 char temp_filename[MAX_URL_SIZE];
1455 char temp_vtt_filename[MAX_URL_SIZE];
1456 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1457 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1458 int is_file_proto = proto && !strcmp(proto, "file");
1459 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1460 static unsigned warned_non_file;
1461 char *key_uri = NULL;
1462 char *iv_string = NULL;
1463 AVDictionary *options = NULL;
1464 double prog_date_time = vs->initial_prog_date_time;
1465 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1466 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1469 if (byterange_mode) {
1474 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1478 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1482 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1483 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1485 set_http_options(s, &options, hls);
1486 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1487 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1488 if (hls->ignore_io_errors)
1493 for (en = vs->segments; en; en = en->next) {
1494 if (target_duration <= en->duration)
1495 target_duration = lrint(en->duration);
1498 vs->discontinuity_set = 0;
1499 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1500 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1502 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1503 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1504 vs->discontinuity_set = 1;
1506 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1507 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1509 for (en = vs->segments; en; en = en->next) {
1510 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1511 av_strcasecmp(en->iv_string, iv_string))) {
1512 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1514 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1515 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1516 key_uri = en->key_uri;
1517 iv_string = en->iv_string;
1520 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1521 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1522 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1525 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1526 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1527 en->size, en->pos, vs->baseurl,
1528 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1530 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1534 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1535 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1537 if (vs->vtt_m3u8_name) {
1538 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1539 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1540 if (hls->ignore_io_errors)
1544 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1545 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1546 for (en = vs->segments; en; en = en->next) {
1547 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1548 en->duration, 0, en->size, en->pos,
1549 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1551 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1556 ff_hls_write_end_list(hls->sub_m3u8_out);
1561 av_dict_free(&options);
1562 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1566 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1567 if (use_temp_file) {
1568 ff_rename(temp_filename, vs->m3u8_name, s);
1569 if (vs->vtt_m3u8_name)
1570 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1572 if (ret >= 0 && hls->master_pl_name)
1573 if (create_master_playlist(s, vs) < 0)
1574 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1579 static int hls_start(AVFormatContext *s, VariantStream *vs)
1581 HLSContext *c = s->priv_data;
1582 AVFormatContext *oc = vs->avf;
1583 AVFormatContext *vtt_oc = vs->vtt_avf;
1584 AVDictionary *options = NULL;
1585 const char *proto = NULL;
1586 int use_temp_file = 0;
1587 char iv_string[KEYSIZE*2 + 1];
1590 if (c->flags & HLS_SINGLE_FILE) {
1591 char *new_name = av_strdup(vs->basename);
1593 return AVERROR(ENOMEM);
1594 ff_format_set_url(oc, new_name);
1595 if (vs->vtt_basename) {
1596 new_name = av_strdup(vs->vtt_basename);
1598 return AVERROR(ENOMEM);
1599 ff_format_set_url(vtt_oc, new_name);
1601 } else if (c->max_seg_size > 0) {
1602 char *filename = NULL;
1603 if (replace_int_data_in_filename(&filename,
1605 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1607 vs->basename, 'd', vs->sequence) < 1) {
1609 av_freep(&filename);
1610 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1611 return AVERROR(EINVAL);
1613 ff_format_set_url(oc, filename);
1615 if (c->use_localtime) {
1617 struct tm *tm, tmpbuf;
1618 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1619 char *buf = av_mallocz(bufsize);
1621 return AVERROR(ENOMEM);
1623 tm = localtime_r(&now0, &tmpbuf);
1624 ff_format_set_url(oc, buf);
1625 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1626 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1627 return AVERROR(EINVAL);
1630 err = sls_flag_use_localtime_filename(oc, c, vs);
1632 return AVERROR(ENOMEM);
1635 if (c->use_localtime_mkdir) {
1637 char *fn_copy = av_strdup(oc->url);
1638 dir = av_dirname(fn_copy);
1639 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1640 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1642 return AVERROR(errno);
1647 char *filename = NULL;
1648 if (replace_int_data_in_filename(&filename,
1650 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1652 vs->basename, 'd', vs->sequence) < 1) {
1654 av_freep(&filename);
1655 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1656 return AVERROR(EINVAL);
1658 ff_format_set_url(oc, filename);
1660 if ( vs->vtt_basename) {
1661 char *filename = NULL;
1662 if (replace_int_data_in_filename(&filename,
1664 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1666 vs->vtt_basename, 'd', vs->sequence) < 1) {
1668 av_freep(&filename);
1669 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1670 return AVERROR(EINVAL);
1672 ff_format_set_url(vtt_oc, filename);
1677 proto = avio_find_protocol_name(oc->url);
1678 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1680 if (use_temp_file) {
1681 char *new_name = av_asprintf("%s.tmp", oc->url);
1683 return AVERROR(ENOMEM);
1684 ff_format_set_url(oc, new_name);
1687 if (c->key_info_file || c->encrypt) {
1688 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1689 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1690 return AVERROR_PATCHWELCOME;
1693 if (c->key_info_file && c->encrypt) {
1694 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1695 " ignoring -hls_enc\n");
1698 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1699 if (c->key_info_file) {
1700 if ((err = hls_encryption_start(s)) < 0)
1703 if ((err = do_encrypt(s, vs)) < 0)
1706 c->encrypt_started = 1;
1708 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1710 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1711 memset(c->iv_string, 0, sizeof(c->iv_string));
1712 memcpy(c->iv_string, iv_string, sizeof(iv_string));
1715 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1716 if (oc->oformat->priv_class && oc->priv_data) {
1717 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1719 if (c->flags & HLS_SINGLE_FILE) {
1720 set_http_options(s, &options, c);
1721 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1722 if (c->ignore_io_errors)
1728 if (vs->vtt_basename) {
1729 set_http_options(s, &options, c);
1730 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1731 if (c->ignore_io_errors)
1736 av_dict_free(&options);
1738 if (vs->vtt_basename) {
1739 err = avformat_write_header(vtt_oc,NULL);
1746 av_dict_free(&options);
1751 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1754 time_t t = time(NULL);
1755 struct tm *p, tmbuf;
1756 HLSContext *hls = s->priv_data;
1758 p = localtime_r(&t, &tmbuf);
1759 // no %s support when strftime returned error or left format string unchanged
1760 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1761 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1762 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1764 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1767 static int append_postfix(char *name, int name_buf_len, int i)
1770 char extension[10] = {'\0'};
1772 p = strrchr(name, '.');
1774 av_strlcpy(extension, p, sizeof(extension));
1778 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1780 if (strlen(extension))
1781 av_strlcat(name, extension, name_buf_len);
1786 static int validate_name(int nb_vs, const char *fn)
1788 const char *filename, *subdir_name;
1789 char *fn_dup = NULL;
1793 ret = AVERROR(EINVAL);
1797 fn_dup = av_strdup(fn);
1798 filename = av_basename(fn);
1799 subdir_name = av_dirname(fn_dup);
1801 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1802 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1803 "either in the filename or in the sub-directory name of file %s\n", fn);
1804 ret = AVERROR(EINVAL);
1808 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1809 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1810 "in the sub-directory name of file %s, but only in one of them\n", fn);
1811 ret = AVERROR(EINVAL);
1820 static int format_name(const char *buf, char **s, int index, const char *varname)
1822 const char *proto, *dir;
1823 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1826 orig_buf_dup = av_strdup(buf);
1827 if (!orig_buf_dup) {
1828 ret = AVERROR(ENOMEM);
1832 if (!av_stristr(buf, "%v")) {
1838 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1839 ret = AVERROR(EINVAL);
1843 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1844 ret = AVERROR(EINVAL);
1849 proto = avio_find_protocol_name(orig_buf_dup);
1850 dir = av_dirname(orig_buf_dup);
1852 /* if %v is present in the file's directory, create sub-directory */
1853 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1854 mod_buf_dup = av_strdup(*s);
1855 dir = av_dirname(mod_buf_dup);
1856 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1857 ret = AVERROR(errno);
1863 av_freep(&orig_buf_dup);
1864 av_freep(&mod_buf_dup);
1868 static int get_nth_codec_stream_index(AVFormatContext *s,
1869 enum AVMediaType codec_type,
1872 unsigned int stream_index, cnt;
1873 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1876 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1877 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1879 if (cnt == stream_id)
1880 return stream_index;
1886 static int parse_variant_stream_mapstring(AVFormatContext *s)
1888 HLSContext *hls = s->priv_data;
1890 int stream_index, i, j;
1891 enum AVMediaType codec_type;
1892 int nb_varstreams = 0, nb_streams;
1893 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1897 * Expected format for var_stream_map string is as below:
1899 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1900 * This string specifies how to group the audio, video and subtitle streams
1901 * into different variant streams. The variant stream groups are separated
1904 * a:, v:, s: are keys to specify audio, video and subtitle streams
1905 * respectively. Allowed values are 0 to 9 digits (limited just based on
1908 * agroup: is key to specify audio group. A string can be given as value.
1909 * sgroup: is key to specify subtitle group. A string can be given as value.
1911 p = av_strdup(hls->var_stream_map);
1913 return AVERROR(ENOMEM);
1916 while (av_strtok(q, " \t", &saveptr1)) {
1922 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1923 if (!hls->var_streams)
1924 return AVERROR(ENOMEM);
1925 hls->nb_varstreams = nb_varstreams;
1927 p = hls->var_stream_map;
1929 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1932 if (nb_varstreams < hls->nb_varstreams) {
1933 vs = &(hls->var_streams[nb_varstreams]);
1934 vs->var_stream_idx = nb_varstreams;
1938 return AVERROR(EINVAL);
1941 while (q < varstr + strlen(varstr)) {
1942 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1943 !av_strncasecmp(q, "s:", 2))
1947 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1949 return AVERROR(ENOMEM);
1952 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1954 if (av_strstart(keyval, "language:", &val)) {
1955 av_free(vs->language);
1956 vs->language = av_strdup(val);
1958 return AVERROR(ENOMEM);
1960 } else if (av_strstart(keyval, "default:", &val)) {
1961 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1962 (!av_strncasecmp(val, "1", strlen("1"))));
1963 hls->has_default_key = 1;
1965 } else if (av_strstart(keyval, "name:", &val)) {
1966 av_free(vs->varname);
1967 vs->varname = av_strdup(val);
1969 return AVERROR(ENOMEM);
1971 } else if (av_strstart(keyval, "agroup:", &val)) {
1972 av_free(vs->agroup);
1973 vs->agroup = av_strdup(val);
1975 return AVERROR(ENOMEM);
1977 } else if (av_strstart(keyval, "sgroup:", &val)) {
1978 av_free(vs->sgroup);
1979 vs->sgroup = av_strdup(val);
1981 return AVERROR(ENOMEM);
1983 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1984 av_free(vs->ccgroup);
1985 vs->ccgroup = av_strdup(val);
1987 return AVERROR(ENOMEM);
1989 } else if (av_strstart(keyval, "v:", &val)) {
1990 codec_type = AVMEDIA_TYPE_VIDEO;
1991 hls->has_video_m3u8 = 1;
1992 } else if (av_strstart(keyval, "a:", &val)) {
1993 codec_type = AVMEDIA_TYPE_AUDIO;
1994 } else if (av_strstart(keyval, "s:", &val)) {
1995 codec_type = AVMEDIA_TYPE_SUBTITLE;
1997 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1998 return AVERROR(EINVAL);
2002 if (av_isdigit(*val))
2003 stream_index = get_nth_codec_stream_index (s, codec_type,
2006 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2007 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2008 if (vs->streams[i] == s->streams[stream_index]) {
2009 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2010 "variant definition #%d\n", nb_varstreams - 1);
2011 return AVERROR(EINVAL);
2014 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2015 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2016 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2017 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2018 "in two different variant definitions #%d and #%d\n",
2019 j, nb_varstreams - 1);
2020 return AVERROR(EINVAL);
2024 vs->streams[nb_streams++] = s->streams[stream_index];
2026 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2027 return AVERROR(EINVAL);
2031 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2032 hls->nb_varstreams);
2037 static int parse_cc_stream_mapstring(AVFormatContext *s)
2039 HLSContext *hls = s->priv_data;
2040 int nb_ccstreams = 0;
2041 char *p, *q, *ccstr, *keyval;
2042 char *saveptr1 = NULL, *saveptr2 = NULL;
2044 ClosedCaptionsStream *ccs;
2046 p = av_strdup(hls->cc_stream_map);
2048 return AVERROR(ENOMEM);
2051 while (av_strtok(q, " \t", &saveptr1)) {
2057 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2058 if (!hls->cc_streams)
2059 return AVERROR(ENOMEM);
2060 hls->nb_ccstreams = nb_ccstreams;
2062 p = hls->cc_stream_map;
2064 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2067 if (nb_ccstreams < hls->nb_ccstreams)
2068 ccs = &(hls->cc_streams[nb_ccstreams++]);
2070 return AVERROR(EINVAL);
2072 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2075 if (av_strstart(keyval, "ccgroup:", &val)) {
2076 av_free(ccs->ccgroup);
2077 ccs->ccgroup = av_strdup(val);
2079 return AVERROR(ENOMEM);
2080 } else if (av_strstart(keyval, "instreamid:", &val)) {
2081 av_free(ccs->instreamid);
2082 ccs->instreamid = av_strdup(val);
2083 if (!ccs->instreamid)
2084 return AVERROR(ENOMEM);
2085 } else if (av_strstart(keyval, "language:", &val)) {
2086 av_free(ccs->language);
2087 ccs->language = av_strdup(val);
2089 return AVERROR(ENOMEM);
2091 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2092 return AVERROR(EINVAL);
2096 if (!ccs->ccgroup || !ccs->instreamid) {
2097 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2098 return AVERROR(EINVAL);
2101 if (av_strstart(ccs->instreamid, "CC", &val)) {
2102 if (atoi(val) < 1 || atoi(val) > 4) {
2103 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2104 atoi(val), ccs->instreamid);
2105 return AVERROR(EINVAL);
2107 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2108 if (atoi(val) < 1 || atoi(val) > 63) {
2109 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2110 atoi(val), ccs->instreamid);
2111 return AVERROR(EINVAL);
2114 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2116 return AVERROR(EINVAL);
2123 static int update_variant_stream_info(AVFormatContext *s)
2125 HLSContext *hls = s->priv_data;
2129 if (hls->cc_stream_map) {
2130 ret = parse_cc_stream_mapstring(s);
2135 if (hls->var_stream_map) {
2136 return parse_variant_stream_mapstring(s);
2138 //By default, a single variant stream with all the codec streams is created
2139 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2140 if (!hls->var_streams)
2141 return AVERROR(ENOMEM);
2142 hls->nb_varstreams = 1;
2144 hls->var_streams[0].var_stream_idx = 0;
2145 hls->var_streams[0].nb_streams = s->nb_streams;
2146 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2147 hls->var_streams[0].nb_streams);
2148 if (!hls->var_streams[0].streams) {
2149 return AVERROR(ENOMEM);
2152 //by default, the first available ccgroup is mapped to the variant stream
2153 if (hls->nb_ccstreams) {
2154 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2155 if (!hls->var_streams[0].ccgroup) {
2156 return AVERROR(ENOMEM);
2160 for (i = 0; i < s->nb_streams; i++)
2161 hls->var_streams[0].streams[i] = s->streams[i];
2166 static int update_master_pl_info(AVFormatContext *s)
2168 HLSContext *hls = s->priv_data;
2170 char *fn1= NULL, *fn2 = NULL;
2173 fn1 = av_strdup(s->url);
2174 dir = av_dirname(fn1);
2177 * if output file's directory has %v, variants are created in sub-directories
2178 * then master is created at the sub-directories level
2180 if (dir && av_stristr(av_basename(dir), "%v")) {
2181 fn2 = av_strdup(dir);
2182 dir = av_dirname(fn2);
2185 if (dir && strcmp(dir, "."))
2186 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2188 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2190 if (!hls->master_m3u8_url) {
2191 ret = AVERROR(ENOMEM);
2202 static int hls_write_header(AVFormatContext *s)
2204 HLSContext *hls = s->priv_data;
2206 VariantStream *vs = NULL;
2208 for (i = 0; i < hls->nb_varstreams; i++) {
2209 vs = &hls->var_streams[i];
2211 ret = avformat_write_header(vs->avf, NULL);
2214 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2215 for (j = 0; j < vs->nb_streams; j++) {
2217 AVStream *outer_st = vs->streams[j];
2219 if (hls->max_seg_size > 0) {
2220 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2221 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2222 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2223 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2224 outer_st->codecpar->bit_rate, hls->max_seg_size);
2228 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2229 inner_st = vs->avf->streams[j];
2230 else if (vs->vtt_avf)
2231 inner_st = vs->vtt_avf->streams[0];
2233 /* We have a subtitle stream, when the user does not want one */
2237 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2238 write_codec_attr(outer_st, vs);
2241 /* Update the Codec Attr string for the mapped audio groups */
2242 if (vs->has_video && vs->agroup) {
2243 for (j = 0; j < hls->nb_varstreams; j++) {
2244 VariantStream *vs_agroup = &(hls->var_streams[j]);
2245 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2246 vs_agroup->agroup &&
2247 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2248 write_codec_attr(vs_agroup->streams[0], vs);
2257 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2259 HLSContext *hls = s->priv_data;
2260 AVDictionary *options = NULL;
2263 set_http_options(s, &options, hls);
2264 ret = hlsenc_io_open(s, &vs->out, hls->fmp4_init_filename, &options);
2265 av_dict_free(&options);
2268 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2269 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2274 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2276 HLSContext *hls = s->priv_data;
2277 AVFormatContext *oc = NULL;
2278 AVStream *st = s->streams[pkt->stream_index];
2279 int64_t end_pts = 0;
2281 int ret = 0, can_split = 1, i, j;
2282 int stream_index = 0;
2283 int range_length = 0;
2284 const char *proto = NULL;
2285 int use_temp_file = 0;
2286 VariantStream *vs = NULL;
2287 char *old_filename = NULL;
2289 for (i = 0; i < hls->nb_varstreams; i++) {
2290 vs = &hls->var_streams[i];
2291 for (j = 0; j < vs->nb_streams; j++) {
2292 if (vs->streams[j] == st) {
2293 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2309 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2310 return AVERROR(ENOMEM);
2313 end_pts = hls->recording_time * vs->number;
2315 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2316 /* reset end_pts, hls->recording_time at end of the init hls list */
2317 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2318 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2319 hls->recording_time = hls->time * AV_TIME_BASE;
2320 end_pts = init_list_dur + after_init_list_dur ;
2323 if (vs->start_pts == AV_NOPTS_VALUE) {
2324 vs->start_pts = pkt->pts;
2325 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2326 vs->start_pts_from_audio = 1;
2328 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2329 vs->start_pts = pkt->pts;
2330 vs->start_pts_from_audio = 0;
2333 if (vs->has_video) {
2334 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2335 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2336 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2338 if (pkt->pts == AV_NOPTS_VALUE)
2339 is_ref_pkt = can_split = 0;
2342 if (vs->end_pts == AV_NOPTS_VALUE)
2343 vs->end_pts = pkt->pts;
2344 if (vs->new_start) {
2346 vs->duration = (double)(pkt->pts - vs->end_pts)
2347 * st->time_base.num / st->time_base.den;
2348 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2350 if (pkt->duration) {
2351 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2353 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2354 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2360 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2361 end_pts, AV_TIME_BASE_Q) >= 0) {
2362 int64_t new_start_pos;
2363 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2365 av_write_frame(oc, NULL); /* Flush any buffered data */
2366 new_start_pos = avio_tell(oc->pb);
2367 vs->size = new_start_pos - vs->start_pos;
2369 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2370 if (!vs->init_range_length) {
2371 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2372 if (range_length <= 0)
2373 return AVERROR(EINVAL);
2374 avio_write(vs->out, vs->init_buffer, range_length);
2375 if (!hls->resend_init_file)
2376 av_freep(&vs->init_buffer);
2377 vs->init_range_length = range_length;
2378 avio_open_dyn_buf(&oc->pb);
2379 vs->packets_written = 0;
2380 vs->start_pos = range_length;
2381 if (!byterange_mode) {
2382 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2386 if (!byterange_mode) {
2388 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2393 proto = avio_find_protocol_name(oc->url);
2394 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2397 if (hls->flags & HLS_SINGLE_FILE) {
2398 ret = flush_dynbuf(vs, &range_length);
2399 av_freep(&vs->temp_buffer);
2403 vs->size = range_length;
2405 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2406 AVDictionary *options = NULL;
2407 char *filename = NULL;
2408 if (hls->key_info_file || hls->encrypt) {
2409 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2410 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2411 filename = av_asprintf("crypto:%s", oc->url);
2413 filename = av_asprintf("%s", oc->url);
2416 av_dict_free(&options);
2417 return AVERROR(ENOMEM);
2420 // look to rename the asset name
2422 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2424 set_http_options(s, &options, hls);
2426 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2428 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2429 "Failed to open file '%s'\n", filename);
2430 av_dict_free(&options);
2431 return hls->ignore_io_errors ? 0 : ret;
2433 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2434 write_styp(vs->out);
2436 ret = flush_dynbuf(vs, &range_length);
2438 av_dict_free(&options);
2441 ret = hlsenc_io_close(s, &vs->out, filename);
2443 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2444 " will retry with a new http session.\n");
2445 ff_format_io_close(s, &vs->out);
2446 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2447 reflush_dynbuf(vs, &range_length);
2448 ret = hlsenc_io_close(s, &vs->out, filename);
2450 av_dict_free(&options);
2451 av_freep(&vs->temp_buffer);
2452 av_freep(&filename);
2456 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2457 hls_rename_temp_file(s, oc);
2460 old_filename = av_strdup(oc->url);
2461 if (!old_filename) {
2462 return AVERROR(ENOMEM);
2465 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2466 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2467 vs->end_pts = pkt->pts;
2470 av_freep(&old_filename);
2475 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2476 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2477 if ((ret = hls_window(s, 0, vs)) < 0) {
2478 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2479 ff_format_io_close(s, &vs->out);
2481 if ((ret = hls_window(s, 0, vs)) < 0) {
2482 av_freep(&old_filename);
2488 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2489 ret = hls_init_file_resend(s, vs);
2491 av_freep(&old_filename);
2496 if (hls->flags & HLS_SINGLE_FILE) {
2498 vs->start_pos += vs->size;
2499 } else if (hls->max_seg_size > 0) {
2500 vs->start_pos = new_start_pos;
2501 if (vs->size >= hls->max_seg_size) {
2503 sls_flag_file_rename(hls, vs, old_filename);
2504 ret = hls_start(s, vs);
2506 /* When split segment by byte, the duration is short than hls_time,
2507 * so it is not enough one segment duration as hls_time, */
2512 vs->start_pos = new_start_pos;
2513 sls_flag_file_rename(hls, vs, old_filename);
2514 ret = hls_start(s, vs);
2516 av_freep(&old_filename);
2524 vs->packets_written++;
2526 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2527 vs->video_keyframe_size += pkt->size;
2528 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2529 vs->video_keyframe_size = avio_tell(oc->pb);
2531 vs->video_keyframe_pos = avio_tell(vs->out);
2533 if (hls->ignore_io_errors)
2540 static void hls_free_variant_streams(struct HLSContext *hls)
2543 AVFormatContext *vtt_oc = NULL;
2544 VariantStream *vs = NULL;
2546 for (i = 0; i < hls->nb_varstreams; i++) {
2547 vs = &hls->var_streams[i];
2548 vtt_oc = vs->vtt_avf;
2550 av_freep(&vs->basename);
2551 av_freep(&vs->base_output_dirname);
2552 av_freep(&vs->fmp4_init_filename);
2554 av_freep(&vs->vtt_basename);
2555 av_freep(&vs->vtt_m3u8_name);
2556 avformat_free_context(vtt_oc);
2559 avformat_free_context(vs->avf);
2560 if (hls->resend_init_file)
2561 av_freep(&vs->init_buffer);
2562 hls_free_segments(vs->segments);
2563 hls_free_segments(vs->old_segments);
2564 av_freep(&vs->m3u8_name);
2565 av_freep(&vs->streams);
2566 av_freep(&vs->agroup);
2567 av_freep(&vs->sgroup);
2568 av_freep(&vs->language);
2569 av_freep(&vs->ccgroup);
2570 av_freep(&vs->baseurl);
2571 av_freep(&vs->varname);
2575 static int hls_write_trailer(struct AVFormatContext *s)
2577 HLSContext *hls = s->priv_data;
2578 AVFormatContext *oc = NULL;
2579 AVFormatContext *vtt_oc = NULL;
2580 char *old_filename = NULL;
2581 const char *proto = NULL;
2582 int use_temp_file = 0;
2585 VariantStream *vs = NULL;
2586 AVDictionary *options = NULL;
2587 int range_length, byterange_mode;
2589 for (i = 0; i < hls->nb_varstreams; i++) {
2590 char *filename = NULL;
2591 vs = &hls->var_streams[i];
2593 vtt_oc = vs->vtt_avf;
2594 old_filename = av_strdup(oc->url);
2597 if (!old_filename) {
2598 return AVERROR(ENOMEM);
2600 if (hls->key_info_file || hls->encrypt) {
2601 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2602 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2603 filename = av_asprintf("crypto:%s", oc->url);
2605 filename = av_asprintf("%s", oc->url);
2608 av_freep(&old_filename);
2609 return AVERROR(ENOMEM);
2612 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2613 int range_length = 0;
2614 if (!vs->init_range_length) {
2615 uint8_t *buffer = NULL;
2616 av_write_frame(oc, NULL); /* Flush any buffered data */
2618 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2619 avio_write(vs->out, buffer, range_length);
2621 vs->init_range_length = range_length;
2622 avio_open_dyn_buf(&oc->pb);
2623 vs->packets_written = 0;
2624 vs->start_pos = range_length;
2625 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2626 if (!byterange_mode) {
2627 ff_format_io_close(s, &vs->out);
2628 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2632 if (!(hls->flags & HLS_SINGLE_FILE)) {
2633 set_http_options(s, &options, hls);
2634 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2636 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2639 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2640 write_styp(vs->out);
2642 ret = flush_dynbuf(vs, &range_length);
2646 vs->size = range_length;
2647 hlsenc_io_close(s, &vs->out, filename);
2648 ret = hlsenc_io_close(s, &vs->out, filename);
2650 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2651 ff_format_io_close(s, &vs->out);
2652 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2654 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2657 reflush_dynbuf(vs, &range_length);
2658 ret = hlsenc_io_close(s, &vs->out, filename);
2660 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2662 av_freep(&vs->temp_buffer);
2665 av_freep(&filename);
2666 av_write_trailer(oc);
2668 proto = avio_find_protocol_name(oc->url);
2669 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2672 // rename that segment from .tmp to the real one
2673 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2674 hls_rename_temp_file(s, oc);
2675 av_freep(&old_filename);
2676 old_filename = av_strdup(oc->url);
2678 if (!old_filename) {
2679 return AVERROR(ENOMEM);
2683 /* after av_write_trailer, then duration + 1 duration per packet */
2684 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2686 sls_flag_file_rename(hls, vs, old_filename);
2690 av_write_trailer(vtt_oc);
2691 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2692 ff_format_io_close(s, &vtt_oc->pb);
2694 ret = hls_window(s, 1, vs);
2696 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2697 ff_format_io_close(s, &vs->out);
2698 hls_window(s, 1, vs);
2700 ffio_free_dyn_buf(&oc->pb);
2702 av_free(old_filename);
2705 hls_free_variant_streams(hls);
2707 for (i = 0; i < hls->nb_ccstreams; i++) {
2708 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2709 av_freep(&ccs->ccgroup);
2710 av_freep(&ccs->instreamid);
2711 av_freep(&ccs->language);
2714 ff_format_io_close(s, &hls->m3u8_out);
2715 ff_format_io_close(s, &hls->sub_m3u8_out);
2716 av_freep(&hls->key_basename);
2717 av_freep(&hls->var_streams);
2718 av_freep(&hls->cc_streams);
2719 av_freep(&hls->master_m3u8_url);
2724 static int hls_init(AVFormatContext *s)
2729 HLSContext *hls = s->priv_data;
2730 const char *pattern = "%d.ts";
2731 VariantStream *vs = NULL;
2732 int basename_size = 0;
2733 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2734 const char *vtt_pattern = "%d.vtt";
2736 int vtt_basename_size = 0;
2737 int http_base_proto = ff_is_http_proto(s->url);
2738 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2740 hls->has_default_key = 0;
2741 hls->has_video_m3u8 = 0;
2742 ret = update_variant_stream_info(s);
2744 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2748 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2749 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2750 ret = AVERROR(EINVAL);
2751 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2755 if (!hls->method && http_base_proto) {
2756 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2759 ret = validate_name(hls->nb_varstreams, s->url);
2763 if (hls->segment_filename) {
2764 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2769 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2770 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2775 if (hls->subtitle_filename) {
2776 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2781 if (hls->master_pl_name) {
2782 ret = update_master_pl_info(s);
2784 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2790 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2793 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2794 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2795 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2796 time_t t = time(NULL);
2797 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2798 hls->start_sequence = av_gettime();
2799 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2800 hls->start_sequence = (int64_t)t;
2801 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2803 struct tm *p, tmbuf;
2804 if (!(p = localtime_r(&t, &tmbuf)))
2805 return AVERROR(errno);
2806 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2807 return AVERROR(ENOMEM);
2808 hls->start_sequence = strtoll(b, NULL, 10);
2810 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2813 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2814 for (i = 0; i < hls->nb_varstreams; i++) {
2815 vs = &hls->var_streams[i];
2817 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2821 vs->sequence = hls->start_sequence;
2822 vs->start_pts = AV_NOPTS_VALUE;
2823 vs->end_pts = AV_NOPTS_VALUE;
2824 vs->current_segment_final_filename_fmt[0] = '\0';
2826 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2827 // Independent segments cannot be guaranteed when splitting by time
2828 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2829 av_log(s, AV_LOG_WARNING,
2830 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2831 "Disabling 'independent_segments' flag\n");
2834 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2837 vs->initial_prog_date_time = now0;
2840 for (j = 0; j < vs->nb_streams; j++) {
2841 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2842 /* Get one video stream to reference for split segments
2843 * so use the first video stream index. */
2844 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2845 vs->reference_stream_index = vs->streams[j]->index;
2847 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2850 if (vs->has_video > 1)
2851 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2852 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2853 vs->oformat = av_guess_format("mp4", NULL, NULL);
2855 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2859 ret = AVERROR_MUXER_NOT_FOUND;
2863 if (vs->has_subtitle) {
2864 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2865 if (!vs->vtt_oformat) {
2866 ret = AVERROR_MUXER_NOT_FOUND;
2870 if (hls->segment_filename) {
2871 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2875 if (hls->flags & HLS_SINGLE_FILE) {
2876 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2883 if (hls->use_localtime) {
2884 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2886 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2889 vs->basename = av_malloc(basename_size);
2890 if (!vs->basename) {
2891 ret = AVERROR(ENOMEM);
2895 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2897 p = strrchr(vs->basename, '.');
2900 if (hls->use_localtime) {
2901 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2903 av_strlcat(vs->basename, pattern, basename_size);
2907 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2908 if (hls->nb_varstreams > 1)
2909 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2910 if (hls->flags & HLS_SINGLE_FILE) {
2911 vs->fmp4_init_filename = av_strdup(vs->basename);
2912 if (!vs->fmp4_init_filename) {
2913 ret = AVERROR(ENOMEM);
2917 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2918 if (!vs->fmp4_init_filename ) {
2919 ret = AVERROR(ENOMEM);
2922 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2923 fmp4_init_filename_len);
2924 if (hls->nb_varstreams > 1) {
2925 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2926 av_freep(&vs->fmp4_init_filename);
2927 format_name(hls->fmp4_init_filename, &vs->fmp4_init_filename, i, vs->varname);
2929 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2935 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2936 strlen(vs->fmp4_init_filename) + 1;
2938 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2939 if (!vs->base_output_dirname) {
2940 ret = AVERROR(ENOMEM);
2944 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2945 fmp4_init_filename_len);
2946 p = strrchr(vs->base_output_dirname, '/');
2949 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2950 fmp4_init_filename_len);
2952 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2953 fmp4_init_filename_len);
2958 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2962 if (vs->has_subtitle) {
2964 if (hls->flags & HLS_SINGLE_FILE)
2965 vtt_pattern = ".vtt";
2966 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2968 vs->vtt_basename = av_malloc(vtt_basename_size);
2969 if (!vs->vtt_basename) {
2970 ret = AVERROR(ENOMEM);
2973 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2974 p = strrchr(vs->vtt_basename, '.');
2978 if ( hls->subtitle_filename ) {
2979 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2983 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->vtt_basename);
2984 if (!vs->vtt_m3u8_name) {
2985 ret = AVERROR(ENOMEM);
2989 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2993 vs->baseurl = av_strdup(hls->baseurl);
2995 ret = AVERROR(ENOMEM);
3000 if ((ret = hls_mux_init(s, vs)) < 0)
3003 if (hls->flags & HLS_APPEND_LIST) {
3004 parse_playlist(s, vs->m3u8_name, vs);
3005 vs->discontinuity = 1;
3006 if (hls->init_time > 0) {
3007 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3008 " hls_init_time value will have no effect\n");
3010 hls->recording_time = hls->time * AV_TIME_BASE;
3014 if ((ret = hls_start(s, vs)) < 0)
3020 hls_free_variant_streams(hls);
3021 for (i = 0; i < hls->nb_ccstreams; i++) {
3022 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
3023 av_freep(&ccs->ccgroup);
3024 av_freep(&ccs->instreamid);
3025 av_freep(&ccs->language);
3027 av_freep(&hls->key_basename);
3028 av_freep(&hls->var_streams);
3029 av_freep(&hls->cc_streams);
3030 av_freep(&hls->master_m3u8_url);
3036 #define OFFSET(x) offsetof(HLSContext, x)
3037 #define E AV_OPT_FLAG_ENCODING_PARAM
3038 static const AVOption options[] = {
3039 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3040 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3041 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3042 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3043 {"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},
3044 {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
3045 {"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},
3047 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3049 {"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},
3050 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3051 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3052 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3053 {"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},
3054 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3055 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3056 {"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},
3057 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3058 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3059 {"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"},
3060 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3061 {"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"},
3062 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3063 {"hls_fmp4_init_resend", "resend fragment mp4 init file after refresh m3u8 every time", OFFSET(resend_init_file), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3064 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3065 {"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"},
3066 {"temp_file", "write segment and playlist to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"},
3067 {"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"},
3068 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3069 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3070 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3071 {"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"},
3072 {"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"},
3073 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3074 {"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"},
3075 {"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"},
3076 {"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"},
3077 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3078 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3079 {"iframes_only", "add EXT-X-I-FRAMES-ONLY, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_I_FRAMES_ONLY }, 0, UINT_MAX, E, "flags"},
3080 #if FF_API_HLS_USE_LOCALTIME
3081 {"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 },
3083 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3084 #if FF_API_HLS_USE_LOCALTIME
3085 {"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 },
3087 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3088 {"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" },
3089 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3090 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3091 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3092 {"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_LAST-1, E, "start_sequence_source_type" },
3093 {"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" },
3094 {"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" },
3095 {"epoch_us", "microseconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3096 {"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" },
3097 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3098 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3099 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3100 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3101 {"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},
3102 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3103 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3104 {"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 },
3105 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3109 static const AVClass hls_class = {
3110 .class_name = "hls muxer",
3111 .item_name = av_default_item_name,
3113 .version = LIBAVUTIL_VERSION_INT,
3117 AVOutputFormat ff_hls_muxer = {
3119 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3120 .extensions = "m3u8",
3121 .priv_data_size = sizeof(HLSContext),
3122 .audio_codec = AV_CODEC_ID_AAC,
3123 .video_codec = AV_CODEC_ID_H264,
3124 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3125 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3127 .write_header = hls_write_header,
3128 .write_packet = hls_write_packet,
3129 .write_trailer = hls_write_trailer,
3130 .priv_class = &hls_class,