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;
165 char key_file[LINE_BUFFER_SIZE + 1];
166 char key_uri[LINE_BUFFER_SIZE + 1];
167 char key_string[KEYSIZE*2 + 1];
168 char iv_string[KEYSIZE*2 + 1];
171 char codec_attr[128];
172 CodecAttributeStatus attr_status;
173 unsigned int nb_streams;
174 int m3u8_created; /* status of media play-list creation */
175 int is_default; /* default status of audio group */
176 char *language; /* audio lauguage name */
177 char *agroup; /* audio group name */
178 char *sgroup; /* subtitle group name */
179 char *ccgroup; /* closed caption group name */
181 char *varname; // variant name
184 typedef struct ClosedCaptionsStream {
185 char *ccgroup; /* closed caption group name */
186 char *instreamid; /* closed captions INSTREAM-ID */
187 char *language; /* closed captions langauge */
188 } ClosedCaptionsStream;
190 typedef struct HLSContext {
191 const AVClass *class; // Class for private options.
192 int64_t start_sequence;
193 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
195 float time; // Set by a private option.
196 float init_time; // Set by a private option.
197 int max_nb_segments; // Set by a private option.
198 int hls_delete_threshold; // Set by a private option.
200 int wrap; // Set by a private option.
202 uint32_t flags; // enum HLSFlags
203 uint32_t pl_type; // enum PlaylistType
204 char *segment_filename;
205 char *fmp4_init_filename;
207 int resend_init_file; ///< resend init file into disk after refresh m3u8
209 int use_localtime; ///< flag to expand filename with localtime
210 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
212 int64_t recording_time;
213 int64_t max_seg_size; // every segment file max size
216 char *vtt_format_options_str;
217 char *subtitle_filename;
218 AVDictionary *format_options;
228 char key_file[LINE_BUFFER_SIZE + 1];
229 char key_uri[LINE_BUFFER_SIZE + 1];
230 char key_string[KEYSIZE*2 + 1];
231 char iv_string[KEYSIZE*2 + 1];
232 AVDictionary *vtt_format_options;
237 VariantStream *var_streams;
238 unsigned int nb_varstreams;
239 ClosedCaptionsStream *cc_streams;
240 unsigned int nb_ccstreams;
242 int master_m3u8_created; /* status of master play-list creation */
243 char *master_m3u8_url; /* URL of the master m3u8 file */
244 int version; /* HLS version */
245 char *var_stream_map; /* user specified variant stream map string */
246 char *cc_stream_map; /* user specified closed caption streams map string */
247 char *master_pl_name;
248 unsigned int master_publish_rate;
250 AVIOContext *m3u8_out;
251 AVIOContext *sub_m3u8_out;
253 int ignore_io_errors;
255 int has_default_key; /* has DEFAULT field of var_stream_map */
256 int has_video_m3u8; /* has video stream m3u8 list */
259 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
260 AVDictionary **options)
262 HLSContext *hls = s->priv_data;
263 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
264 int err = AVERROR_MUXER_NOT_FOUND;
265 if (!*pb || !http_base_proto || !hls->http_persistent) {
266 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
267 #if CONFIG_HTTP_PROTOCOL
269 URLContext *http_url_context = ffio_geturlcontext(*pb);
270 av_assert0(http_url_context);
271 err = ff_http_do_new_request(http_url_context, filename);
273 ff_format_io_close(s, pb);
280 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
282 HLSContext *hls = s->priv_data;
283 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
287 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
288 ff_format_io_close(s, pb);
289 #if CONFIG_HTTP_PROTOCOL
291 URLContext *http_url_context = ffio_geturlcontext(*pb);
292 av_assert0(http_url_context);
294 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
295 ret = ff_http_get_shutdown_status(http_url_context);
301 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
303 int http_base_proto = ff_is_http_proto(s->url);
306 av_dict_set(options, "method", c->method, 0);
307 } else if (http_base_proto) {
308 av_dict_set(options, "method", "PUT", 0);
311 av_dict_set(options, "user_agent", c->user_agent, 0);
312 if (c->http_persistent)
313 av_dict_set_int(options, "multiple_requests", 1, 0);
315 av_dict_set_int(options, "timeout", c->timeout, 0);
317 av_dict_set(options, "headers", c->headers, 0);
320 static void write_codec_attr(AVStream *st, VariantStream *vs)
322 int codec_strlen = strlen(vs->codec_attr);
325 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
327 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
330 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
331 uint8_t *data = st->codecpar->extradata;
332 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
333 snprintf(attr, sizeof(attr),
334 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
338 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
339 snprintf(attr, sizeof(attr), "mp4a.40.33");
340 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
341 snprintf(attr, sizeof(attr), "mp4a.40.34");
342 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
343 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
344 snprintf(attr, sizeof(attr), "mp4a.40.2");
345 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
346 snprintf(attr, sizeof(attr), "ac-3");
347 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
348 snprintf(attr, sizeof(attr), "ec-3");
352 // Don't write the same attribute multiple times
353 if (!av_stristr(vs->codec_attr, attr)) {
354 snprintf(vs->codec_attr + codec_strlen,
355 sizeof(vs->codec_attr) - codec_strlen,
356 "%s%s", codec_strlen ? "," : "", attr);
361 vs->codec_attr[0] = '\0';
362 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
366 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
375 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
382 if (c == '%' && *(p+1) == '%') // %%
384 else if (c == '%' && *(p+1) == placeholder) {
385 av_bprintf(&buf, "%s", datastring);
392 if (addchar_count > 0) {
393 av_bprint_append_data(&buf, p, addchar_count);
397 if (!av_bprint_is_complete(&buf)) {
398 av_bprint_finalize(&buf, NULL);
401 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
407 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
412 int nd, addchar_count;
416 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
423 if (c == '%' && *(p+1) == '%') // %%
425 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
428 while (av_isdigit(*(p + addchar_count))) {
429 nd = nd * 10 + *(p + addchar_count) - '0';
433 if (*(p + addchar_count) == placeholder) {
434 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
435 p += (addchar_count + 1);
443 av_bprint_append_data(&buf, p, addchar_count);
446 if (!av_bprint_is_complete(&buf)) {
447 av_bprint_finalize(&buf, NULL);
450 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
456 static void write_styp(AVIOContext *pb)
459 ffio_wfourcc(pb, "styp");
460 ffio_wfourcc(pb, "msdh");
461 avio_wb32(pb, 0); /* minor */
462 ffio_wfourcc(pb, "msdh");
463 ffio_wfourcc(pb, "msix");
466 static int flush_dynbuf(VariantStream *vs, int *range_length)
468 AVFormatContext *ctx = vs->avf;
471 return AVERROR(EINVAL);
475 av_write_frame(ctx, NULL);
478 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
480 avio_write(vs->out, vs->temp_buffer, *range_length);
484 return avio_open_dyn_buf(&ctx->pb);
487 static void reflush_dynbuf(VariantStream *vs, int *range_length)
490 avio_write(vs->out, vs->temp_buffer, *range_length);
494 #define SEPARATOR '\\'
496 #define SEPARATOR '/'
499 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
500 const char *path, const char *proto)
502 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
503 AVDictionary *opt = NULL;
504 AVIOContext *out = NULL;
506 av_dict_set(&opt, "method", "DELETE", 0);
507 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
510 return hls->ignore_io_errors ? 1 : ret;
511 ff_format_io_close(avf, &out);
512 } else if (unlink(path) < 0) {
513 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
514 path, strerror(errno));
519 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
523 HLSSegment *segment, *previous_segment = NULL;
524 float playlist_duration = 0.0f;
528 char *dirname = NULL;
529 char *dirname_r = NULL;
530 char *dirname_repl = NULL;
531 char *vtt_dirname = NULL;
532 char *vtt_dirname_r = NULL;
533 const char *proto = NULL;
535 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
537 segment = vs->segments;
539 playlist_duration += segment->duration;
540 segment = segment->next;
543 segment = vs->old_segments;
546 playlist_duration -= segment->duration;
547 previous_segment = segment;
548 segment = previous_segment->next;
550 if (playlist_duration <= -previous_segment->duration) {
551 previous_segment->next = NULL;
554 if (segment_cnt >= hls->hls_delete_threshold) {
555 previous_segment->next = NULL;
560 if (segment && !hls->use_localtime_mkdir) {
561 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
562 dirname = (char*)av_dirname(dirname_r);
565 /* if %v is present in the file's directory
566 * all segment belongs to the same variant, so do it only once before the loop*/
567 if (dirname && av_stristr(dirname, "%v")) {
569 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
570 ret = AVERROR(EINVAL);
574 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
575 ret = AVERROR(EINVAL);
580 dirname = dirname_repl;
584 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
586 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
587 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
588 av_bprintf(&path, "%s", segment->filename);
590 if (!av_bprint_is_complete(&path)) {
591 ret = AVERROR(ENOMEM);
595 proto = avio_find_protocol_name(s->url);
596 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
599 if ((segment->sub_filename[0] != '\0')) {
600 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
601 vtt_dirname = (char*)av_dirname(vtt_dirname_r);
603 av_bprint_clear(&path);
604 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
605 segment->sub_filename);
606 av_freep(&vtt_dirname_r);
608 if (!av_bprint_is_complete(&path)) {
609 ret = AVERROR(ENOMEM);
613 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
616 av_bprint_clear(&path);
617 previous_segment = segment;
618 segment = previous_segment->next;
619 av_freep(&previous_segment);
623 av_bprint_finalize(&path, NULL);
624 av_freep(&dirname_r);
625 av_freep(&dirname_repl);
630 static int randomize(uint8_t *buf, int len)
633 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
636 if (RAND_bytes(buf, len))
639 return AVERROR(ENOSYS);
641 return AVERROR(EINVAL);
644 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
646 HLSContext *hls = s->priv_data;
650 uint8_t key[KEYSIZE];
651 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
653 len = strlen(key_basename_source) + 4 + 1;
654 hls->key_basename = av_mallocz(len);
655 if (!hls->key_basename)
656 return AVERROR(ENOMEM);
658 av_strlcpy(hls->key_basename, key_basename_source, len);
659 av_strlcat(hls->key_basename, ".key", len);
662 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
663 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
665 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
666 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
669 if (!*hls->iv_string) {
670 uint8_t iv[16] = { 0 };
674 AV_WB64(iv + 8, vs->sequence);
676 memcpy(iv, hls->iv, sizeof(iv));
678 ff_data_to_hex(buf, iv, sizeof(iv), 0);
680 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
683 if (!*hls->key_uri) {
684 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
685 return AVERROR(EINVAL);
688 if (!*hls->key_file) {
689 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
690 return AVERROR(EINVAL);
693 if (!*hls->key_string) {
694 AVDictionary *options = NULL;
696 if ((ret = randomize(key, sizeof(key))) < 0) {
697 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
701 memcpy(key, hls->key, sizeof(key));
704 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
705 set_http_options(s, &options, hls);
706 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
707 av_dict_free(&options);
710 avio_seek(pb, 0, SEEK_CUR);
711 avio_write(pb, key, KEYSIZE);
718 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
720 HLSContext *hls = s->priv_data;
723 uint8_t key[KEYSIZE];
724 AVDictionary *options = NULL;
726 set_http_options(s, &options, hls);
727 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
728 av_dict_free(&options);
730 av_log(hls, AV_LOG_ERROR,
731 "error opening key info file %s\n", hls->key_info_file);
735 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
736 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
738 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
739 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
741 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
742 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
744 ff_format_io_close(s, &pb);
747 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
748 return AVERROR(EINVAL);
751 if (!*vs->key_file) {
752 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
753 return AVERROR(EINVAL);
756 set_http_options(s, &options, hls);
757 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
758 av_dict_free(&options);
760 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
764 ret = avio_read(pb, key, sizeof(key));
765 ff_format_io_close(s, &pb);
766 if (ret != sizeof(key)) {
767 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
768 if (ret >= 0 || ret == AVERROR_EOF)
769 ret = AVERROR(EINVAL);
772 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
777 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
779 AVDictionary *options = NULL;
780 HLSContext *hls = s->priv_data;
782 AVFormatContext *vtt_oc = NULL;
783 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
784 int remaining_options;
787 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
792 oc->url = av_strdup("");
794 return AVERROR(ENOMEM);
796 oc->interrupt_callback = s->interrupt_callback;
797 oc->max_delay = s->max_delay;
798 oc->opaque = s->opaque;
799 oc->io_open = s->io_open;
800 oc->io_close = s->io_close;
801 oc->strict_std_compliance = s->strict_std_compliance;
802 av_dict_copy(&oc->metadata, s->metadata, 0);
804 if (vs->vtt_oformat) {
805 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
808 vtt_oc = vs->vtt_avf;
809 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
812 for (i = 0; i < vs->nb_streams; i++) {
814 AVFormatContext *loc;
815 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
820 if (!(st = avformat_new_stream(loc, NULL)))
821 return AVERROR(ENOMEM);
822 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
823 if (!oc->oformat->codec_tag ||
824 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
825 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
826 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
828 st->codecpar->codec_tag = 0;
831 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
832 st->time_base = vs->streams[i]->time_base;
833 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
836 vs->packets_written = 1;
840 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
841 if (hls->http_persistent > 0) {
842 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
843 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
845 if (hls->max_seg_size > 0) {
846 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
847 return AVERROR_PATCHWELCOME;
851 vs->packets_written = 0;
852 vs->init_range_length = 0;
854 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
857 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
858 set_http_options(s, &options, hls);
859 if (byterange_mode) {
860 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
862 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
864 av_dict_free(&options);
867 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
871 av_dict_copy(&options, hls->format_options, 0);
872 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
873 av_dict_set(&options, "fflags", "-autobsf", 0);
874 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
876 /* We only require one PAT/PMT per segment. */
878 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
879 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
880 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
882 ret = avformat_init_output(oc, &options);
883 remaining_options = av_dict_count(options);
884 av_dict_free(&options);
887 if (remaining_options) {
888 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
889 return AVERROR(EINVAL);
895 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
898 if (!av_strcasecmp(segment->filename,filename))
900 segment = segment->next;
902 return (HLSSegment *) NULL;
905 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
906 VariantStream *vs, HLSSegment *en,
907 double duration, int64_t pos, int64_t size)
909 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
910 strlen(vs->current_segment_final_filename_fmt)) {
911 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
913 return AVERROR(ENOMEM);
915 ff_format_set_url(vs->avf, new_url);
916 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
917 char *filename = NULL;
918 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
919 av_log(hls, AV_LOG_ERROR,
920 "Invalid second level segment filename template '%s', "
921 "you can try to remove second_level_segment_size flag\n",
924 return AVERROR(EINVAL);
926 ff_format_set_url(vs->avf, filename);
928 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
929 char *filename = NULL;
930 if (replace_int_data_in_filename(&filename, vs->avf->url,
931 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
932 av_log(hls, AV_LOG_ERROR,
933 "Invalid second level segment filename template '%s', "
934 "you can try to remove second_level_segment_time flag\n",
937 return AVERROR(EINVAL);
939 ff_format_set_url(vs->avf, filename);
945 static int sls_flag_check_duration_size_index(HLSContext *hls)
949 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
950 av_log(hls, AV_LOG_ERROR,
951 "second_level_segment_duration hls_flag requires strftime to be true\n");
952 ret = AVERROR(EINVAL);
954 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
955 av_log(hls, AV_LOG_ERROR,
956 "second_level_segment_size hls_flag requires strfime to be true\n");
957 ret = AVERROR(EINVAL);
959 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
960 av_log(hls, AV_LOG_ERROR,
961 "second_level_segment_index hls_flag requires strftime to be true\n");
962 ret = AVERROR(EINVAL);
968 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
970 const char *proto = avio_find_protocol_name(vs->basename);
971 int segment_renaming_ok = proto && !strcmp(proto, "file");
974 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
975 av_log(hls, AV_LOG_ERROR,
976 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
977 ret = AVERROR(EINVAL);
979 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
980 av_log(hls, AV_LOG_ERROR,
981 "second_level_segment_size hls_flag works only with file protocol segment names\n");
982 ret = AVERROR(EINVAL);
988 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
989 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
990 strlen(vs->current_segment_final_filename_fmt)) {
991 ff_rename(old_filename, vs->avf->url, hls);
995 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
997 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
998 char *filename = NULL;
999 if (replace_int_data_in_filename(&filename,
1001 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1003 oc->url, 'd', vs->sequence) < 1) {
1005 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1006 "you can try to remove second_level_segment_index flag\n",
1008 av_freep(&filename);
1009 return AVERROR(EINVAL);
1011 ff_format_set_url(oc, filename);
1013 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1014 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1015 sizeof(vs->current_segment_final_filename_fmt));
1016 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1017 char *filename = NULL;
1018 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1019 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1020 "you can try to remove second_level_segment_size flag\n",
1022 av_freep(&filename);
1023 return AVERROR(EINVAL);
1025 ff_format_set_url(oc, filename);
1027 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1028 char *filename = NULL;
1029 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1030 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1031 "you can try to remove second_level_segment_time flag\n",
1033 av_freep(&filename);
1034 return AVERROR(EINVAL);
1036 ff_format_set_url(oc, filename);
1042 /* Create a new segment and append it to the segment list */
1043 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1044 VariantStream *vs, double duration, int64_t pos,
1047 HLSSegment *en = av_malloc(sizeof(*en));
1048 const char *filename;
1049 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1053 return AVERROR(ENOMEM);
1055 en->var_stream_idx = vs->var_stream_idx;
1056 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1062 filename = av_basename(vs->avf->url);
1064 if (hls->use_localtime_mkdir) {
1065 filename = vs->avf->url;
1067 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1068 && !byterange_mode) {
1069 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1071 av_strlcpy(en->filename, filename, sizeof(en->filename));
1073 if (vs->has_subtitle)
1074 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1076 en->sub_filename[0] = '\0';
1078 en->duration = duration;
1081 en->keyframe_pos = vs->video_keyframe_pos;
1082 en->keyframe_size = vs->video_keyframe_size;
1086 if (vs->discontinuity) {
1088 vs->discontinuity = 0;
1091 if (hls->key_info_file || hls->encrypt) {
1092 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1093 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1099 vs->last_segment->next = en;
1101 vs->last_segment = en;
1103 // EVENT or VOD playlists imply sliding window cannot be used
1104 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1105 hls->max_nb_segments = 0;
1107 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1109 vs->initial_prog_date_time += en->duration;
1110 vs->segments = en->next;
1111 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1113 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1115 !(hls->flags & HLS_SINGLE_FILE)) {
1117 en->next = vs->old_segments;
1118 vs->old_segments = en;
1119 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1126 if (hls->max_seg_size > 0) {
1134 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1136 HLSContext *hls = s->priv_data;
1138 int ret = 0, is_segment = 0;
1139 int64_t new_start_pos;
1140 char line[MAX_URL_SIZE];
1144 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1145 &s->interrupt_callback, NULL,
1146 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1149 ff_get_chomp_line(in, line, sizeof(line));
1150 if (strcmp(line, "#EXTM3U")) {
1151 ret = AVERROR_INVALIDDATA;
1155 vs->discontinuity = 0;
1156 while (!avio_feof(in)) {
1157 ff_get_chomp_line(in, line, sizeof(line));
1158 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1159 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1160 if (tmp_sequence < vs->sequence)
1161 av_log(hls, AV_LOG_VERBOSE,
1162 "Found playlist sequence number was smaller """
1163 "than specified start sequence number: %"PRId64" < %"PRId64", "
1164 "omitting\n", tmp_sequence, hls->start_sequence);
1166 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1167 vs->sequence = tmp_sequence;
1169 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1171 vs->discontinuity = 1;
1172 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1174 vs->duration = atof(ptr);
1175 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1176 ptr = av_stristr(line, "URI=\"");
1178 ptr += strlen("URI=\"");
1179 end = av_stristr(ptr, ",");
1181 av_strlcpy(vs->key_uri, ptr, end - ptr);
1183 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1187 ptr = av_stristr(line, "IV=0x");
1189 ptr += strlen("IV=0x");
1190 end = av_stristr(ptr, ",");
1192 av_strlcpy(vs->iv_string, ptr, end - ptr);
1194 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1198 } else if (av_strstart(line, "#", NULL)) {
1200 } else if (line[0]) {
1202 char *new_file = av_strdup(line);
1204 ret = AVERROR(ENOMEM);
1207 ff_format_set_url(vs->avf, new_file);
1209 new_start_pos = avio_tell(vs->avf->pb);
1210 vs->size = new_start_pos - vs->start_pos;
1211 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1212 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1215 vs->start_pos = new_start_pos;
1225 static void hls_free_segments(HLSSegment *p)
1236 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1238 size_t len = strlen(oc->url);
1239 char *final_filename = av_strdup(oc->url);
1242 if (!final_filename)
1243 return AVERROR(ENOMEM);
1244 final_filename[len-4] = '\0';
1245 ret = ff_rename(oc->url, final_filename, s);
1246 oc->url[len-4] = '\0';
1247 av_freep(&final_filename);
1251 static const char* get_relative_url(const char *master_url, const char *media_url)
1253 const char *p = strrchr(master_url, '/');
1254 size_t base_len = 0;
1256 if (!p) p = strrchr(master_url, '\\');
1259 base_len = p - master_url;
1260 if (av_strncasecmp(master_url, media_url, base_len)) {
1261 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1268 return media_url + base_len + 1;
1271 static int64_t get_stream_bit_rate(AVStream *stream)
1273 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1275 AV_PKT_DATA_CPB_PROPERTIES,
1279 if (stream->codecpar->bit_rate)
1280 return stream->codecpar->bit_rate;
1282 return props->max_bitrate;
1287 static int create_master_playlist(AVFormatContext *s,
1288 VariantStream * const input_vs)
1290 HLSContext *hls = s->priv_data;
1291 VariantStream *vs, *temp_vs;
1292 AVStream *vid_st, *aud_st;
1293 AVDictionary *options = NULL;
1296 const char *m3u8_rel_name = NULL;
1297 const char *vtt_m3u8_rel_name = NULL;
1299 char *sgroup = NULL;
1300 ClosedCaptionsStream *ccs;
1301 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1302 int is_file_proto = proto && !strcmp(proto, "file");
1303 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1304 char temp_filename[MAX_URL_SIZE];
1306 input_vs->m3u8_created = 1;
1307 if (!hls->master_m3u8_created) {
1308 /* For the first time, wait until all the media playlists are created */
1309 for (i = 0; i < hls->nb_varstreams; i++)
1310 if (!hls->var_streams[i].m3u8_created)
1313 /* Keep publishing the master playlist at the configured rate */
1314 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1315 input_vs->number % hls->master_publish_rate)
1319 set_http_options(s, &options, hls);
1320 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1321 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1322 av_dict_free(&options);
1324 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1329 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1331 for (i = 0; i < hls->nb_ccstreams; i++) {
1332 ccs = &(hls->cc_streams[i]);
1333 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1334 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1335 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1337 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1338 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1341 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1342 for (i = 0; i < hls->nb_varstreams; i++) {
1343 vs = &(hls->var_streams[i]);
1345 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1348 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1349 if (!m3u8_rel_name) {
1350 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1354 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1357 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1358 for (i = 0; i < hls->nb_varstreams; i++) {
1359 vs = &(hls->var_streams[i]);
1361 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1362 if (!m3u8_rel_name) {
1363 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1369 for (j = 0; j < vs->nb_streams; j++) {
1370 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1371 vid_st = vs->streams[j];
1372 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1373 aud_st = vs->streams[j];
1376 if (!vid_st && !aud_st) {
1377 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1382 * Traverse through the list of audio only rendition streams and find
1383 * the rendition which has highest bitrate in the same audio group
1386 for (j = 0; j < hls->nb_varstreams; j++) {
1387 temp_vs = &(hls->var_streams[j]);
1388 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1390 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1392 aud_st = temp_vs->streams[0];
1393 if (temp_vs->streams[0]->codecpar->bit_rate >
1394 aud_st->codecpar->bit_rate)
1395 aud_st = temp_vs->streams[0];
1402 bandwidth += get_stream_bit_rate(vid_st);
1404 bandwidth += get_stream_bit_rate(aud_st);
1405 bandwidth += bandwidth / 10;
1408 if (vid_st && vs->ccgroup) {
1409 /* check if this group name is available in the cc map string */
1410 for (j = 0; j < hls->nb_ccstreams; j++) {
1411 ccs = &(hls->cc_streams[j]);
1412 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1413 ccgroup = vs->ccgroup;
1417 if (j == hls->nb_ccstreams)
1418 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1422 if (vid_st && vs->sgroup) {
1423 sgroup = vs->sgroup;
1424 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1425 if (!vtt_m3u8_rel_name) {
1426 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1430 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1433 if (!hls->has_default_key || !hls->has_video_m3u8) {
1434 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1435 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1438 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1439 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1445 hls->master_m3u8_created = 1;
1446 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1448 ff_rename(temp_filename, hls->master_m3u8_url, s);
1453 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1455 HLSContext *hls = s->priv_data;
1457 int target_duration = 0;
1459 char temp_filename[MAX_URL_SIZE];
1460 char temp_vtt_filename[MAX_URL_SIZE];
1461 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1462 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1463 int is_file_proto = proto && !strcmp(proto, "file");
1464 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1465 static unsigned warned_non_file;
1466 char *key_uri = NULL;
1467 char *iv_string = NULL;
1468 AVDictionary *options = NULL;
1469 double prog_date_time = vs->initial_prog_date_time;
1470 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1471 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1474 if (byterange_mode) {
1479 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1483 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1487 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1488 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1490 set_http_options(s, &options, hls);
1491 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1492 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1493 if (hls->ignore_io_errors)
1498 for (en = vs->segments; en; en = en->next) {
1499 if (target_duration <= en->duration)
1500 target_duration = lrint(en->duration);
1503 vs->discontinuity_set = 0;
1504 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1505 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1507 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1508 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1509 vs->discontinuity_set = 1;
1511 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1512 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1514 for (en = vs->segments; en; en = en->next) {
1515 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1516 av_strcasecmp(en->iv_string, iv_string))) {
1517 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1519 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1520 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1521 key_uri = en->key_uri;
1522 iv_string = en->iv_string;
1525 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1526 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1527 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1530 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1531 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1532 en->size, en->pos, vs->baseurl,
1533 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1535 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1539 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1540 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1542 if (vs->vtt_m3u8_name) {
1543 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1544 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1545 if (hls->ignore_io_errors)
1549 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1550 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1551 for (en = vs->segments; en; en = en->next) {
1552 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1553 en->duration, 0, en->size, en->pos,
1554 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1556 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1561 ff_hls_write_end_list(hls->sub_m3u8_out);
1566 av_dict_free(&options);
1567 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1571 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1572 if (use_temp_file) {
1573 ff_rename(temp_filename, vs->m3u8_name, s);
1574 if (vs->vtt_m3u8_name)
1575 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1577 if (ret >= 0 && hls->master_pl_name)
1578 if (create_master_playlist(s, vs) < 0)
1579 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1584 static int hls_start(AVFormatContext *s, VariantStream *vs)
1586 HLSContext *c = s->priv_data;
1587 AVFormatContext *oc = vs->avf;
1588 AVFormatContext *vtt_oc = vs->vtt_avf;
1589 AVDictionary *options = NULL;
1590 const char *proto = NULL;
1591 int use_temp_file = 0;
1592 char iv_string[KEYSIZE*2 + 1];
1595 if (c->flags & HLS_SINGLE_FILE) {
1596 char *new_name = av_strdup(vs->basename);
1598 return AVERROR(ENOMEM);
1599 ff_format_set_url(oc, new_name);
1600 if (vs->vtt_basename) {
1601 new_name = av_strdup(vs->vtt_basename);
1603 return AVERROR(ENOMEM);
1604 ff_format_set_url(vtt_oc, new_name);
1606 } else if (c->max_seg_size > 0) {
1607 char *filename = NULL;
1608 if (replace_int_data_in_filename(&filename,
1610 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1612 vs->basename, 'd', vs->sequence) < 1) {
1614 av_freep(&filename);
1615 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1616 return AVERROR(EINVAL);
1618 ff_format_set_url(oc, filename);
1620 if (c->use_localtime) {
1622 struct tm *tm, tmpbuf;
1623 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1624 char *buf = av_mallocz(bufsize);
1626 return AVERROR(ENOMEM);
1628 tm = localtime_r(&now0, &tmpbuf);
1629 ff_format_set_url(oc, buf);
1630 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1631 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1632 return AVERROR(EINVAL);
1635 err = sls_flag_use_localtime_filename(oc, c, vs);
1637 return AVERROR(ENOMEM);
1640 if (c->use_localtime_mkdir) {
1642 char *fn_copy = av_strdup(oc->url);
1644 return AVERROR(ENOMEM);
1645 dir = av_dirname(fn_copy);
1646 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1647 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1649 return AVERROR(errno);
1654 char *filename = NULL;
1655 if (replace_int_data_in_filename(&filename,
1657 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1659 vs->basename, 'd', vs->sequence) < 1) {
1661 av_freep(&filename);
1662 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1663 return AVERROR(EINVAL);
1665 ff_format_set_url(oc, filename);
1667 if ( vs->vtt_basename) {
1668 char *filename = NULL;
1669 if (replace_int_data_in_filename(&filename,
1671 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1673 vs->vtt_basename, 'd', vs->sequence) < 1) {
1675 av_freep(&filename);
1676 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1677 return AVERROR(EINVAL);
1679 ff_format_set_url(vtt_oc, filename);
1684 proto = avio_find_protocol_name(oc->url);
1685 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1687 if (use_temp_file) {
1688 char *new_name = av_asprintf("%s.tmp", oc->url);
1690 return AVERROR(ENOMEM);
1691 ff_format_set_url(oc, new_name);
1694 if (c->key_info_file || c->encrypt) {
1695 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1696 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1697 return AVERROR_PATCHWELCOME;
1700 if (c->key_info_file && c->encrypt) {
1701 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1702 " ignoring -hls_enc\n");
1705 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1706 if (c->key_info_file) {
1707 if ((err = hls_encryption_start(s, vs)) < 0)
1710 if (!c->encrypt_started) {
1711 if ((err = do_encrypt(s, vs)) < 0)
1713 c->encrypt_started = 1;
1715 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1716 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1717 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1719 vs->encrypt_started = 1;
1721 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1723 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1724 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1725 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1728 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1729 if (oc->oformat->priv_class && oc->priv_data) {
1730 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1732 if (c->flags & HLS_SINGLE_FILE) {
1733 set_http_options(s, &options, c);
1734 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1735 if (c->ignore_io_errors)
1741 if (vs->vtt_basename) {
1742 set_http_options(s, &options, c);
1743 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1744 if (c->ignore_io_errors)
1749 av_dict_free(&options);
1751 if (vs->vtt_basename) {
1752 err = avformat_write_header(vtt_oc,NULL);
1759 av_dict_free(&options);
1764 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1767 time_t t = time(NULL);
1768 struct tm *p, tmbuf;
1769 HLSContext *hls = s->priv_data;
1771 p = localtime_r(&t, &tmbuf);
1772 // no %s support when strftime returned error or left format string unchanged
1773 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1774 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1775 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1777 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1780 static int append_postfix(char *name, int name_buf_len, int i)
1783 char extension[10] = {'\0'};
1785 p = strrchr(name, '.');
1787 av_strlcpy(extension, p, sizeof(extension));
1791 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1793 if (strlen(extension))
1794 av_strlcat(name, extension, name_buf_len);
1799 static int validate_name(int nb_vs, const char *fn)
1801 const char *filename, *subdir_name;
1802 char *fn_dup = NULL;
1806 ret = AVERROR(EINVAL);
1810 fn_dup = av_strdup(fn);
1812 return AVERROR(ENOMEM);
1813 filename = av_basename(fn);
1814 subdir_name = av_dirname(fn_dup);
1816 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1817 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1818 "either in the filename or in the sub-directory name of file %s\n", fn);
1819 ret = AVERROR(EINVAL);
1823 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1824 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1825 "in the sub-directory name of file %s, but only in one of them\n", fn);
1826 ret = AVERROR(EINVAL);
1835 static int format_name(const char *buf, char **s, int index, const char *varname)
1837 const char *proto, *dir;
1838 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1841 orig_buf_dup = av_strdup(buf);
1842 if (!orig_buf_dup) {
1843 ret = AVERROR(ENOMEM);
1847 if (!av_stristr(buf, "%v")) {
1853 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1854 ret = AVERROR(EINVAL);
1858 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1859 ret = AVERROR(EINVAL);
1864 proto = avio_find_protocol_name(orig_buf_dup);
1865 dir = av_dirname(orig_buf_dup);
1867 /* if %v is present in the file's directory, create sub-directory */
1868 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1869 mod_buf_dup = av_strdup(*s);
1870 dir = av_dirname(mod_buf_dup);
1871 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1872 ret = AVERROR(errno);
1878 av_freep(&orig_buf_dup);
1879 av_freep(&mod_buf_dup);
1883 static int get_nth_codec_stream_index(AVFormatContext *s,
1884 enum AVMediaType codec_type,
1887 unsigned int stream_index, cnt;
1888 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1891 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1892 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1894 if (cnt == stream_id)
1895 return stream_index;
1901 static int parse_variant_stream_mapstring(AVFormatContext *s)
1903 HLSContext *hls = s->priv_data;
1905 int stream_index, i, j;
1906 enum AVMediaType codec_type;
1907 int nb_varstreams = 0, nb_streams;
1908 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1912 * Expected format for var_stream_map string is as below:
1914 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1915 * This string specifies how to group the audio, video and subtitle streams
1916 * into different variant streams. The variant stream groups are separated
1919 * a:, v:, s: are keys to specify audio, video and subtitle streams
1920 * respectively. Allowed values are 0 to 9 digits (limited just based on
1923 * agroup: is key to specify audio group. A string can be given as value.
1924 * sgroup: is key to specify subtitle group. A string can be given as value.
1926 p = av_strdup(hls->var_stream_map);
1928 return AVERROR(ENOMEM);
1931 while (av_strtok(q, " \t", &saveptr1)) {
1937 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1938 if (!hls->var_streams)
1939 return AVERROR(ENOMEM);
1940 hls->nb_varstreams = nb_varstreams;
1942 p = hls->var_stream_map;
1944 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1947 if (nb_varstreams < hls->nb_varstreams) {
1948 vs = &(hls->var_streams[nb_varstreams]);
1949 vs->var_stream_idx = nb_varstreams;
1953 return AVERROR(EINVAL);
1956 while (q < varstr + strlen(varstr)) {
1957 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1958 !av_strncasecmp(q, "s:", 2))
1962 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1964 return AVERROR(ENOMEM);
1967 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1971 if (av_strstart(keyval, "language:", &val)) {
1972 av_free(vs->language);
1973 vs->language = av_strdup(val);
1975 return AVERROR(ENOMEM);
1977 } else if (av_strstart(keyval, "default:", &val)) {
1978 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1979 (!av_strncasecmp(val, "1", strlen("1"))));
1980 hls->has_default_key = 1;
1982 } else if (av_strstart(keyval, "name:", &val)) {
1983 av_free(vs->varname);
1984 vs->varname = av_strdup(val);
1986 return AVERROR(ENOMEM);
1988 } else if (av_strstart(keyval, "agroup:", &val)) {
1989 av_free(vs->agroup);
1990 vs->agroup = av_strdup(val);
1992 return AVERROR(ENOMEM);
1994 } else if (av_strstart(keyval, "sgroup:", &val)) {
1995 av_free(vs->sgroup);
1996 vs->sgroup = av_strdup(val);
1998 return AVERROR(ENOMEM);
2000 } else if (av_strstart(keyval, "ccgroup:", &val)) {
2001 av_free(vs->ccgroup);
2002 vs->ccgroup = av_strdup(val);
2004 return AVERROR(ENOMEM);
2006 } else if (av_strstart(keyval, "v:", &val)) {
2007 codec_type = AVMEDIA_TYPE_VIDEO;
2008 hls->has_video_m3u8 = 1;
2009 } else if (av_strstart(keyval, "a:", &val)) {
2010 codec_type = AVMEDIA_TYPE_AUDIO;
2011 } else if (av_strstart(keyval, "s:", &val)) {
2012 codec_type = AVMEDIA_TYPE_SUBTITLE;
2014 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2015 return AVERROR(EINVAL);
2018 num = strtoll(val, &end, 0);
2019 if (!av_isdigit(*val) || *end != '\0') {
2020 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2021 return AVERROR(EINVAL);
2023 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2025 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2026 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2027 if (vs->streams[i] == s->streams[stream_index]) {
2028 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2029 "variant definition #%d\n", nb_varstreams - 1);
2030 return AVERROR(EINVAL);
2033 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2034 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2035 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2036 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2037 "in two different variant definitions #%d and #%d\n",
2038 j, nb_varstreams - 1);
2039 return AVERROR(EINVAL);
2043 vs->streams[nb_streams++] = s->streams[stream_index];
2045 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2046 return AVERROR(EINVAL);
2050 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2051 hls->nb_varstreams);
2056 static int parse_cc_stream_mapstring(AVFormatContext *s)
2058 HLSContext *hls = s->priv_data;
2059 int nb_ccstreams = 0;
2060 char *p, *q, *ccstr, *keyval;
2061 char *saveptr1 = NULL, *saveptr2 = NULL;
2063 ClosedCaptionsStream *ccs;
2065 p = av_strdup(hls->cc_stream_map);
2067 return AVERROR(ENOMEM);
2070 while (av_strtok(q, " \t", &saveptr1)) {
2076 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2077 if (!hls->cc_streams)
2078 return AVERROR(ENOMEM);
2079 hls->nb_ccstreams = nb_ccstreams;
2081 p = hls->cc_stream_map;
2083 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2086 if (nb_ccstreams < hls->nb_ccstreams)
2087 ccs = &(hls->cc_streams[nb_ccstreams++]);
2089 return AVERROR(EINVAL);
2091 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2094 if (av_strstart(keyval, "ccgroup:", &val)) {
2095 av_free(ccs->ccgroup);
2096 ccs->ccgroup = av_strdup(val);
2098 return AVERROR(ENOMEM);
2099 } else if (av_strstart(keyval, "instreamid:", &val)) {
2100 av_free(ccs->instreamid);
2101 ccs->instreamid = av_strdup(val);
2102 if (!ccs->instreamid)
2103 return AVERROR(ENOMEM);
2104 } else if (av_strstart(keyval, "language:", &val)) {
2105 av_free(ccs->language);
2106 ccs->language = av_strdup(val);
2108 return AVERROR(ENOMEM);
2110 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2111 return AVERROR(EINVAL);
2115 if (!ccs->ccgroup || !ccs->instreamid) {
2116 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2117 return AVERROR(EINVAL);
2120 if (av_strstart(ccs->instreamid, "CC", &val)) {
2121 if (atoi(val) < 1 || atoi(val) > 4) {
2122 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2123 atoi(val), ccs->instreamid);
2124 return AVERROR(EINVAL);
2126 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2127 if (atoi(val) < 1 || atoi(val) > 63) {
2128 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2129 atoi(val), ccs->instreamid);
2130 return AVERROR(EINVAL);
2133 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2135 return AVERROR(EINVAL);
2142 static int update_variant_stream_info(AVFormatContext *s)
2144 HLSContext *hls = s->priv_data;
2148 if (hls->cc_stream_map) {
2149 ret = parse_cc_stream_mapstring(s);
2154 if (hls->var_stream_map) {
2155 return parse_variant_stream_mapstring(s);
2157 //By default, a single variant stream with all the codec streams is created
2158 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2159 if (!hls->var_streams)
2160 return AVERROR(ENOMEM);
2161 hls->nb_varstreams = 1;
2163 hls->var_streams[0].var_stream_idx = 0;
2164 hls->var_streams[0].nb_streams = s->nb_streams;
2165 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2166 hls->var_streams[0].nb_streams);
2167 if (!hls->var_streams[0].streams) {
2168 return AVERROR(ENOMEM);
2171 //by default, the first available ccgroup is mapped to the variant stream
2172 if (hls->nb_ccstreams) {
2173 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2174 if (!hls->var_streams[0].ccgroup) {
2175 return AVERROR(ENOMEM);
2179 for (i = 0; i < s->nb_streams; i++)
2180 hls->var_streams[0].streams[i] = s->streams[i];
2185 static int update_master_pl_info(AVFormatContext *s)
2187 HLSContext *hls = s->priv_data;
2189 char *fn1= NULL, *fn2 = NULL;
2192 fn1 = av_strdup(s->url);
2194 return AVERROR(ENOMEM);
2195 dir = av_dirname(fn1);
2198 * if output file's directory has %v, variants are created in sub-directories
2199 * then master is created at the sub-directories level
2201 if (dir && av_stristr(av_basename(dir), "%v")) {
2202 fn2 = av_strdup(dir);
2204 ret = AVERROR(ENOMEM);
2207 dir = av_dirname(fn2);
2210 if (dir && strcmp(dir, "."))
2211 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2213 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2215 if (!hls->master_m3u8_url) {
2216 ret = AVERROR(ENOMEM);
2227 static int hls_write_header(AVFormatContext *s)
2229 HLSContext *hls = s->priv_data;
2231 VariantStream *vs = NULL;
2233 for (i = 0; i < hls->nb_varstreams; i++) {
2234 vs = &hls->var_streams[i];
2236 ret = avformat_write_header(vs->avf, NULL);
2239 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2240 for (j = 0; j < vs->nb_streams; j++) {
2242 AVStream *outer_st = vs->streams[j];
2244 if (hls->max_seg_size > 0) {
2245 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2246 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2247 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2248 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2249 outer_st->codecpar->bit_rate, hls->max_seg_size);
2253 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2254 inner_st = vs->avf->streams[j];
2255 else if (vs->vtt_avf)
2256 inner_st = vs->vtt_avf->streams[0];
2258 /* We have a subtitle stream, when the user does not want one */
2262 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2263 write_codec_attr(outer_st, vs);
2266 /* Update the Codec Attr string for the mapped audio groups */
2267 if (vs->has_video && vs->agroup) {
2268 for (j = 0; j < hls->nb_varstreams; j++) {
2269 VariantStream *vs_agroup = &(hls->var_streams[j]);
2270 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2271 vs_agroup->agroup &&
2272 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2273 write_codec_attr(vs_agroup->streams[0], vs);
2282 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2284 HLSContext *hls = s->priv_data;
2285 AVDictionary *options = NULL;
2288 set_http_options(s, &options, hls);
2289 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2290 av_dict_free(&options);
2293 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2294 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2299 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2301 HLSContext *hls = s->priv_data;
2302 AVFormatContext *oc = NULL;
2303 AVStream *st = s->streams[pkt->stream_index];
2304 int64_t end_pts = 0;
2306 int ret = 0, can_split = 1, i, j;
2307 int stream_index = 0;
2308 int range_length = 0;
2309 const char *proto = NULL;
2310 int use_temp_file = 0;
2311 VariantStream *vs = NULL;
2312 char *old_filename = NULL;
2314 for (i = 0; i < hls->nb_varstreams; i++) {
2315 vs = &hls->var_streams[i];
2316 for (j = 0; j < vs->nb_streams; j++) {
2317 if (vs->streams[j] == st) {
2318 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2334 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2335 return AVERROR(ENOMEM);
2338 end_pts = hls->recording_time * vs->number;
2340 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2341 /* reset end_pts, hls->recording_time at end of the init hls list */
2342 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2343 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2344 hls->recording_time = hls->time * AV_TIME_BASE;
2345 end_pts = init_list_dur + after_init_list_dur ;
2348 if (vs->start_pts == AV_NOPTS_VALUE) {
2349 vs->start_pts = pkt->pts;
2350 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2351 vs->start_pts_from_audio = 1;
2353 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2354 vs->start_pts = pkt->pts;
2355 vs->start_pts_from_audio = 0;
2358 if (vs->has_video) {
2359 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2360 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2361 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2363 if (pkt->pts == AV_NOPTS_VALUE)
2364 is_ref_pkt = can_split = 0;
2367 if (vs->end_pts == AV_NOPTS_VALUE)
2368 vs->end_pts = pkt->pts;
2369 if (vs->new_start) {
2371 vs->duration = (double)(pkt->pts - vs->end_pts)
2372 * st->time_base.num / st->time_base.den;
2373 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2375 if (pkt->duration) {
2376 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2378 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2379 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2385 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2386 end_pts, AV_TIME_BASE_Q) >= 0) {
2387 int64_t new_start_pos;
2388 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2390 av_write_frame(oc, NULL); /* Flush any buffered data */
2391 new_start_pos = avio_tell(oc->pb);
2392 vs->size = new_start_pos - vs->start_pos;
2394 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2395 if (!vs->init_range_length) {
2396 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2397 if (range_length <= 0)
2398 return AVERROR(EINVAL);
2399 avio_write(vs->out, vs->init_buffer, range_length);
2400 if (!hls->resend_init_file)
2401 av_freep(&vs->init_buffer);
2402 vs->init_range_length = range_length;
2403 avio_open_dyn_buf(&oc->pb);
2404 vs->packets_written = 0;
2405 vs->start_pos = range_length;
2406 if (!byterange_mode) {
2407 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2411 if (!byterange_mode) {
2413 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2417 if (hls->flags & HLS_SINGLE_FILE) {
2418 ret = flush_dynbuf(vs, &range_length);
2419 av_freep(&vs->temp_buffer);
2423 vs->size = range_length;
2426 proto = avio_find_protocol_name(oc->url);
2427 use_temp_file = proto && !strcmp(proto, "file")
2428 && (hls->flags & HLS_TEMP_FILE);
2431 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2432 AVDictionary *options = NULL;
2433 char *filename = NULL;
2434 if (hls->key_info_file || hls->encrypt) {
2435 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2436 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2437 filename = av_asprintf("crypto:%s", oc->url);
2439 filename = av_asprintf("%s", oc->url);
2442 av_dict_free(&options);
2443 return AVERROR(ENOMEM);
2446 // look to rename the asset name
2448 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2450 set_http_options(s, &options, hls);
2452 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2454 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2455 "Failed to open file '%s'\n", filename);
2456 av_dict_free(&options);
2457 return hls->ignore_io_errors ? 0 : ret;
2459 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2460 write_styp(vs->out);
2462 ret = flush_dynbuf(vs, &range_length);
2464 av_dict_free(&options);
2467 ret = hlsenc_io_close(s, &vs->out, filename);
2469 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2470 " will retry with a new http session.\n");
2471 ff_format_io_close(s, &vs->out);
2472 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2473 reflush_dynbuf(vs, &range_length);
2474 ret = hlsenc_io_close(s, &vs->out, filename);
2476 av_dict_free(&options);
2477 av_freep(&vs->temp_buffer);
2478 av_freep(&filename);
2482 hls_rename_temp_file(s, oc);
2485 old_filename = av_strdup(oc->url);
2486 if (!old_filename) {
2487 return AVERROR(ENOMEM);
2490 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2491 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2492 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2493 vs->end_pts = pkt->pts;
2496 av_freep(&old_filename);
2501 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2502 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2503 if ((ret = hls_window(s, 0, vs)) < 0) {
2504 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2505 ff_format_io_close(s, &vs->out);
2507 if ((ret = hls_window(s, 0, vs)) < 0) {
2508 av_freep(&old_filename);
2514 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2515 ret = hls_init_file_resend(s, vs);
2517 av_freep(&old_filename);
2522 if (hls->flags & HLS_SINGLE_FILE) {
2524 vs->start_pos += vs->size;
2525 } else if (hls->max_seg_size > 0) {
2526 vs->start_pos = new_start_pos;
2527 if (vs->size >= hls->max_seg_size) {
2529 sls_flag_file_rename(hls, vs, old_filename);
2530 ret = hls_start(s, vs);
2532 /* When split segment by byte, the duration is short than hls_time,
2533 * so it is not enough one segment duration as hls_time, */
2538 vs->start_pos = new_start_pos;
2539 sls_flag_file_rename(hls, vs, old_filename);
2540 ret = hls_start(s, vs);
2542 av_freep(&old_filename);
2550 vs->packets_written++;
2552 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2553 vs->video_keyframe_size += pkt->size;
2554 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2555 vs->video_keyframe_size = avio_tell(oc->pb);
2557 vs->video_keyframe_pos = avio_tell(vs->out);
2559 if (hls->ignore_io_errors)
2566 static void hls_deinit(AVFormatContext *s)
2568 HLSContext *hls = s->priv_data;
2570 AVFormatContext *vtt_oc = NULL;
2571 VariantStream *vs = NULL;
2573 for (i = 0; i < hls->nb_varstreams; i++) {
2574 vs = &hls->var_streams[i];
2575 vtt_oc = vs->vtt_avf;
2577 av_freep(&vs->basename);
2578 av_freep(&vs->base_output_dirname);
2579 av_freep(&vs->fmp4_init_filename);
2580 av_freep(&vs->vtt_basename);
2581 av_freep(&vs->vtt_m3u8_name);
2583 avformat_free_context(vtt_oc);
2584 avformat_free_context(vs->avf);
2585 if (hls->resend_init_file)
2586 av_freep(&vs->init_buffer);
2587 hls_free_segments(vs->segments);
2588 hls_free_segments(vs->old_segments);
2589 av_freep(&vs->m3u8_name);
2590 av_freep(&vs->streams);
2591 av_freep(&vs->agroup);
2592 av_freep(&vs->sgroup);
2593 av_freep(&vs->language);
2594 av_freep(&vs->ccgroup);
2595 av_freep(&vs->baseurl);
2596 av_freep(&vs->varname);
2599 for (i = 0; i < hls->nb_ccstreams; i++) {
2600 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2601 av_freep(&ccs->ccgroup);
2602 av_freep(&ccs->instreamid);
2603 av_freep(&ccs->language);
2606 ff_format_io_close(s, &hls->m3u8_out);
2607 ff_format_io_close(s, &hls->sub_m3u8_out);
2608 av_freep(&hls->key_basename);
2609 av_freep(&hls->var_streams);
2610 av_freep(&hls->cc_streams);
2611 av_freep(&hls->master_m3u8_url);
2614 static int hls_write_trailer(struct AVFormatContext *s)
2616 HLSContext *hls = s->priv_data;
2617 AVFormatContext *oc = NULL;
2618 AVFormatContext *vtt_oc = NULL;
2619 char *old_filename = NULL;
2620 const char *proto = NULL;
2621 int use_temp_file = 0;
2624 VariantStream *vs = NULL;
2625 AVDictionary *options = NULL;
2626 int range_length, byterange_mode;
2628 for (i = 0; i < hls->nb_varstreams; i++) {
2629 char *filename = NULL;
2630 vs = &hls->var_streams[i];
2632 vtt_oc = vs->vtt_avf;
2633 old_filename = av_strdup(oc->url);
2636 if (!old_filename) {
2637 return AVERROR(ENOMEM);
2639 if (hls->key_info_file || hls->encrypt) {
2640 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2641 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2642 filename = av_asprintf("crypto:%s", oc->url);
2644 filename = av_asprintf("%s", oc->url);
2647 av_freep(&old_filename);
2648 return AVERROR(ENOMEM);
2651 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2652 int range_length = 0;
2653 if (!vs->init_range_length) {
2654 uint8_t *buffer = NULL;
2655 av_write_frame(oc, NULL); /* Flush any buffered data */
2657 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2658 avio_write(vs->out, buffer, range_length);
2660 vs->init_range_length = range_length;
2661 avio_open_dyn_buf(&oc->pb);
2662 vs->packets_written = 0;
2663 vs->start_pos = range_length;
2664 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2665 if (!byterange_mode) {
2666 ff_format_io_close(s, &vs->out);
2667 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2671 if (!(hls->flags & HLS_SINGLE_FILE)) {
2672 set_http_options(s, &options, hls);
2673 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2675 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2678 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2679 write_styp(vs->out);
2681 ret = flush_dynbuf(vs, &range_length);
2685 vs->size = range_length;
2686 hlsenc_io_close(s, &vs->out, filename);
2687 ret = hlsenc_io_close(s, &vs->out, filename);
2689 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2690 ff_format_io_close(s, &vs->out);
2691 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2693 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2696 reflush_dynbuf(vs, &range_length);
2697 ret = hlsenc_io_close(s, &vs->out, filename);
2699 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2701 av_freep(&vs->temp_buffer);
2704 av_freep(&filename);
2705 av_write_trailer(oc);
2707 proto = avio_find_protocol_name(oc->url);
2708 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2711 // rename that segment from .tmp to the real one
2712 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2713 hls_rename_temp_file(s, oc);
2714 av_freep(&old_filename);
2715 old_filename = av_strdup(oc->url);
2717 if (!old_filename) {
2718 return AVERROR(ENOMEM);
2722 /* after av_write_trailer, then duration + 1 duration per packet */
2723 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2725 sls_flag_file_rename(hls, vs, old_filename);
2729 av_write_trailer(vtt_oc);
2730 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2731 ff_format_io_close(s, &vtt_oc->pb);
2733 ret = hls_window(s, 1, vs);
2735 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2736 ff_format_io_close(s, &vs->out);
2737 hls_window(s, 1, vs);
2739 ffio_free_dyn_buf(&oc->pb);
2741 av_free(old_filename);
2748 static int hls_init(AVFormatContext *s)
2753 HLSContext *hls = s->priv_data;
2754 const char *pattern = "%d.ts";
2755 VariantStream *vs = NULL;
2756 int basename_size = 0;
2757 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2758 const char *vtt_pattern = "%d.vtt";
2760 int vtt_basename_size = 0;
2761 int http_base_proto = ff_is_http_proto(s->url);
2762 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2764 hls->has_default_key = 0;
2765 hls->has_video_m3u8 = 0;
2766 ret = update_variant_stream_info(s);
2768 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2773 if (!hls->method && http_base_proto) {
2774 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2777 ret = validate_name(hls->nb_varstreams, s->url);
2781 if (hls->segment_filename) {
2782 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2787 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2788 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2793 if (hls->subtitle_filename) {
2794 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2799 if (hls->master_pl_name) {
2800 ret = update_master_pl_info(s);
2802 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2808 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2811 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2812 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2813 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2814 time_t t = time(NULL);
2815 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2816 hls->start_sequence = av_gettime();
2817 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2818 hls->start_sequence = (int64_t)t;
2819 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2821 struct tm *p, tmbuf;
2822 if (!(p = localtime_r(&t, &tmbuf)))
2823 return AVERROR(errno);
2824 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2825 return AVERROR(ENOMEM);
2826 hls->start_sequence = strtoll(b, NULL, 10);
2828 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2831 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2833 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2834 // Independent segments cannot be guaranteed when splitting by time
2835 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2836 av_log(s, AV_LOG_WARNING,
2837 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2838 "Disabling 'independent_segments' flag\n");
2841 for (i = 0; i < hls->nb_varstreams; i++) {
2842 vs = &hls->var_streams[i];
2844 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2848 vs->sequence = hls->start_sequence;
2849 vs->start_pts = AV_NOPTS_VALUE;
2850 vs->end_pts = AV_NOPTS_VALUE;
2851 vs->current_segment_final_filename_fmt[0] = '\0';
2853 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2856 vs->initial_prog_date_time = now0;
2859 for (j = 0; j < vs->nb_streams; j++) {
2860 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2861 /* Get one video stream to reference for split segments
2862 * so use the first video stream index. */
2863 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2864 vs->reference_stream_index = vs->streams[j]->index;
2866 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2869 if (vs->has_video > 1)
2870 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2871 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2872 vs->oformat = av_guess_format("mp4", NULL, NULL);
2874 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2878 ret = AVERROR_MUXER_NOT_FOUND;
2882 if (hls->segment_filename) {
2883 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2887 if (hls->flags & HLS_SINGLE_FILE) {
2888 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2895 if (hls->use_localtime) {
2896 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2898 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2901 vs->basename = av_malloc(basename_size);
2902 if (!vs->basename) {
2903 ret = AVERROR(ENOMEM);
2907 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2909 p = strrchr(vs->basename, '.');
2912 if (hls->use_localtime) {
2913 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2915 av_strlcat(vs->basename, pattern, basename_size);
2919 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2920 if (hls->nb_varstreams > 1)
2921 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2922 if (hls->flags & HLS_SINGLE_FILE) {
2923 vs->fmp4_init_filename = av_strdup(vs->basename);
2924 if (!vs->fmp4_init_filename) {
2925 ret = AVERROR(ENOMEM);
2929 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2930 if (!vs->fmp4_init_filename ) {
2931 ret = AVERROR(ENOMEM);
2934 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2935 fmp4_init_filename_len);
2936 if (hls->nb_varstreams > 1) {
2937 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2938 av_freep(&vs->fmp4_init_filename);
2939 ret = format_name(hls->fmp4_init_filename,
2940 &vs->fmp4_init_filename, i, vs->varname);
2942 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2948 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2949 strlen(vs->fmp4_init_filename) + 1;
2951 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2952 if (!vs->base_output_dirname) {
2953 ret = AVERROR(ENOMEM);
2957 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2958 fmp4_init_filename_len);
2959 p = strrchr(vs->base_output_dirname, '/');
2962 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2963 fmp4_init_filename_len);
2965 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2966 fmp4_init_filename_len);
2971 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2975 if (vs->has_subtitle) {
2976 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2977 if (!vs->vtt_oformat)
2978 return AVERROR_MUXER_NOT_FOUND;
2980 if (hls->flags & HLS_SINGLE_FILE)
2981 vtt_pattern = ".vtt";
2982 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2984 vs->vtt_basename = av_malloc(vtt_basename_size);
2985 if (!vs->vtt_basename) {
2986 ret = AVERROR(ENOMEM);
2989 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2990 p = strrchr(vs->vtt_basename, '.');
2994 if ( hls->subtitle_filename ) {
2995 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2999 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->vtt_basename);
3000 if (!vs->vtt_m3u8_name) {
3001 ret = AVERROR(ENOMEM);
3005 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
3009 vs->baseurl = av_strdup(hls->baseurl);
3011 ret = AVERROR(ENOMEM);
3016 if ((ret = hls_mux_init(s, vs)) < 0)
3019 if (hls->flags & HLS_APPEND_LIST) {
3020 parse_playlist(s, vs->m3u8_name, vs);
3021 vs->discontinuity = 1;
3022 if (hls->init_time > 0) {
3023 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3024 " hls_init_time value will have no effect\n");
3026 hls->recording_time = hls->time * AV_TIME_BASE;
3030 if ((ret = hls_start(s, vs)) < 0)
3038 #define OFFSET(x) offsetof(HLSContext, x)
3039 #define E AV_OPT_FLAG_ENCODING_PARAM
3040 static const AVOption options[] = {
3041 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3042 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3043 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3044 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3045 {"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},
3046 {"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},
3047 {"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},
3049 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3051 {"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},
3052 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3053 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3054 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3055 {"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},
3056 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3057 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3058 {"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},
3059 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3060 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3061 {"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"},
3062 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3063 {"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"},
3064 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3065 {"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 },
3066 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3067 {"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"},
3068 {"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"},
3069 {"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"},
3070 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3071 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3072 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3073 {"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"},
3074 {"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"},
3075 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3076 {"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"},
3077 {"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"},
3078 {"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"},
3079 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3080 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3081 {"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"},
3082 #if FF_API_HLS_USE_LOCALTIME
3083 {"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 },
3085 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3086 #if FF_API_HLS_USE_LOCALTIME
3087 {"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 },
3089 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3090 {"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" },
3091 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3092 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3093 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3094 {"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" },
3095 {"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" },
3096 {"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" },
3097 {"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" },
3098 {"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" },
3099 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3100 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3101 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3102 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3103 {"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},
3104 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3105 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3106 {"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 },
3107 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3111 static const AVClass hls_class = {
3112 .class_name = "hls muxer",
3113 .item_name = av_default_item_name,
3115 .version = LIBAVUTIL_VERSION_INT,
3119 AVOutputFormat ff_hls_muxer = {
3121 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3122 .extensions = "m3u8",
3123 .priv_data_size = sizeof(HLSContext),
3124 .audio_codec = AV_CODEC_ID_AAC,
3125 .video_codec = AV_CODEC_ID_H264,
3126 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3127 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3129 .write_header = hls_write_header,
3130 .write_packet = hls_write_packet,
3131 .write_trailer = hls_write_trailer,
3132 .deinit = hls_deinit,
3133 .priv_class = &hls_class,