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"
50 #if CONFIG_HTTP_PROTOCOL
53 #include "hlsplaylist.h"
55 #include "os_support.h"
58 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
59 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
60 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
61 HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
62 HLS_START_SEQUENCE_LAST, // unused
63 } StartSequenceSourceType;
66 CODEC_ATTRIBUTE_WRITTEN = 0,
67 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
68 } CodecAttributeStatus;
71 #define LINE_BUFFER_SIZE MAX_URL_SIZE
72 #define HLS_MICROSECOND_UNIT 1000000
73 #define BUFSIZE (16 * 1024)
74 #define POSTFIX_PATTERN "_%d"
76 typedef struct HLSSegment {
77 char filename[MAX_URL_SIZE];
78 char sub_filename[MAX_URL_SIZE];
79 double duration; /* in seconds */
84 int64_t keyframe_size;
85 unsigned var_stream_idx;
87 char key_uri[LINE_BUFFER_SIZE + 1];
88 char iv_string[KEYSIZE*2 + 1];
90 struct HLSSegment *next;
91 double discont_program_date_time;
94 typedef enum HLSFlags {
95 // Generate a single media file and use byte ranges in the playlist.
96 HLS_SINGLE_FILE = (1 << 0),
97 HLS_DELETE_SEGMENTS = (1 << 1),
98 HLS_ROUND_DURATIONS = (1 << 2),
99 HLS_DISCONT_START = (1 << 3),
100 HLS_OMIT_ENDLIST = (1 << 4),
101 HLS_SPLIT_BY_TIME = (1 << 5),
102 HLS_APPEND_LIST = (1 << 6),
103 HLS_PROGRAM_DATE_TIME = (1 << 7),
104 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
105 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
106 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
107 HLS_TEMP_FILE = (1 << 11),
108 HLS_PERIODIC_REKEY = (1 << 12),
109 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
110 HLS_I_FRAMES_ONLY = (1 << 14),
118 typedef struct VariantStream {
119 unsigned var_stream_idx;
122 const AVOutputFormat *oformat;
123 const AVOutputFormat *vtt_oformat;
125 AVIOContext *out_single_file;
127 int init_range_length;
128 uint8_t *temp_buffer;
129 uint8_t *init_buffer;
131 AVFormatContext *avf;
132 AVFormatContext *vtt_avf;
137 int start_pts_from_audio;
138 double dpp; // duration per packet
141 int64_t video_lastpos;
142 int64_t video_keyframe_pos;
143 int64_t video_keyframe_size;
144 double duration; // last segment duration computed so far, in seconds
145 int64_t start_pos; // last segment starting position
146 int64_t size; // last segment size
148 int discontinuity_set;
150 int reference_stream_index;
152 HLSSegment *segments;
153 HLSSegment *last_segment;
154 HLSSegment *old_segments;
162 double initial_prog_date_time;
163 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
165 char *fmp4_init_filename;
166 char *base_output_dirname;
170 char key_file[LINE_BUFFER_SIZE + 1];
171 char key_uri[LINE_BUFFER_SIZE + 1];
172 char key_string[KEYSIZE*2 + 1];
173 char iv_string[KEYSIZE*2 + 1];
176 char codec_attr[128];
177 CodecAttributeStatus attr_status;
178 unsigned int nb_streams;
179 int m3u8_created; /* status of media play-list creation */
180 int is_default; /* default status of audio group */
181 const char *language; /* audio lauguage name */
182 const char *agroup; /* audio group name */
183 const char *sgroup; /* subtitle group name */
184 const char *ccgroup; /* closed caption group name */
185 const char *varname; /* variant name */
188 typedef struct ClosedCaptionsStream {
189 const char *ccgroup; /* closed caption group name */
190 const char *instreamid; /* closed captions INSTREAM-ID */
191 const char *language; /* closed captions langauge */
192 } ClosedCaptionsStream;
194 typedef struct HLSContext {
195 const AVClass *class; // Class for private options.
196 int64_t start_sequence;
197 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
199 int64_t time; // Set by a private option.
200 int64_t init_time; // Set by a private option.
201 int max_nb_segments; // Set by a private option.
202 int hls_delete_threshold; // Set by a private option.
203 uint32_t flags; // enum HLSFlags
204 uint32_t pl_type; // enum PlaylistType
205 char *segment_filename;
206 char *fmp4_init_filename;
208 int resend_init_file; ///< resend init file into disk after refresh m3u8
210 int use_localtime; ///< flag to expand filename with localtime
211 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
213 int64_t recording_time;
214 int64_t max_seg_size; // every segment file max size
217 char *vtt_format_options_str;
218 char *subtitle_filename;
219 AVDictionary *format_options;
229 char key_file[LINE_BUFFER_SIZE + 1];
230 char key_uri[LINE_BUFFER_SIZE + 1];
231 char key_string[KEYSIZE*2 + 1];
232 char iv_string[KEYSIZE*2 + 1];
233 AVDictionary *vtt_format_options;
238 VariantStream *var_streams;
239 unsigned int nb_varstreams;
240 ClosedCaptionsStream *cc_streams;
241 unsigned int nb_ccstreams;
243 int master_m3u8_created; /* status of master play-list creation */
244 char *master_m3u8_url; /* URL of the master m3u8 file */
245 int version; /* HLS version */
246 char *var_stream_map; /* user specified variant stream map string */
247 char *cc_stream_map; /* user specified closed caption streams map string */
248 char *master_pl_name;
249 unsigned int master_publish_rate;
251 AVIOContext *m3u8_out;
252 AVIOContext *sub_m3u8_out;
254 int ignore_io_errors;
256 int has_default_key; /* has DEFAULT field of var_stream_map */
257 int has_video_m3u8; /* has video stream m3u8 list */
260 static int strftime_expand(const char *fmt, char **dest)
264 struct tm *tm, tmpbuf;
267 buf = av_mallocz(MAX_URL_SIZE);
269 return AVERROR(ENOMEM);
272 tm = localtime_r(&now0, &tmpbuf);
273 r = strftime(buf, MAX_URL_SIZE, fmt, tm);
276 return AVERROR(EINVAL);
283 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
284 AVDictionary **options)
286 HLSContext *hls = s->priv_data;
287 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
288 int err = AVERROR_MUXER_NOT_FOUND;
289 if (!*pb || !http_base_proto || !hls->http_persistent) {
290 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
291 #if CONFIG_HTTP_PROTOCOL
293 URLContext *http_url_context = ffio_geturlcontext(*pb);
294 av_assert0(http_url_context);
295 err = ff_http_do_new_request(http_url_context, filename);
297 ff_format_io_close(s, pb);
304 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
306 HLSContext *hls = s->priv_data;
307 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
311 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
312 ff_format_io_close(s, pb);
313 #if CONFIG_HTTP_PROTOCOL
315 URLContext *http_url_context = ffio_geturlcontext(*pb);
316 av_assert0(http_url_context);
318 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
319 ret = ff_http_get_shutdown_status(http_url_context);
325 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
327 int http_base_proto = ff_is_http_proto(s->url);
330 av_dict_set(options, "method", c->method, 0);
331 } else if (http_base_proto) {
332 av_dict_set(options, "method", "PUT", 0);
335 av_dict_set(options, "user_agent", c->user_agent, 0);
336 if (c->http_persistent)
337 av_dict_set_int(options, "multiple_requests", 1, 0);
339 av_dict_set_int(options, "timeout", c->timeout, 0);
341 av_dict_set(options, "headers", c->headers, 0);
344 static void write_codec_attr(AVStream *st, VariantStream *vs)
346 int codec_strlen = strlen(vs->codec_attr);
349 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
351 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
354 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
355 uint8_t *data = st->codecpar->extradata;
356 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
357 snprintf(attr, sizeof(attr),
358 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
362 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
363 uint8_t *data = st->codecpar->extradata;
364 int profile = FF_PROFILE_UNKNOWN;
365 int level = FF_LEVEL_UNKNOWN;
367 if (st->codecpar->profile != FF_PROFILE_UNKNOWN)
368 profile = st->codecpar->profile;
369 if (st->codecpar->level != FF_LEVEL_UNKNOWN)
370 level = st->codecpar->level;
372 /* check the boundary of data which from current position is small than extradata_size */
373 while (data && (data - st->codecpar->extradata + 19) < st->codecpar->extradata_size) {
374 /* get HEVC SPS NAL and seek to profile_tier_level */
375 if (!(data[0] | data[1] | data[2]) && data[3] == 1 && ((data[4] & 0x7E) == 0x42)) {
379 /* skip start code + nalu header */
381 /* process by reference General NAL unit syntax */
382 remain_size = st->codecpar->extradata_size - (data - st->codecpar->extradata);
383 rbsp_buf = ff_nal_unit_extract_rbsp(data, remain_size, &rbsp_size, 0);
386 if (rbsp_size < 13) {
390 /* skip sps_video_parameter_set_id u(4),
391 * sps_max_sub_layers_minus1 u(3),
392 * and sps_temporal_id_nesting_flag u(1) */
393 profile = rbsp_buf[1] & 0x1f;
394 /* skip 8 + 8 + 32 + 4 + 43 + 1 bit */
395 level = rbsp_buf[12];
401 if (st->codecpar->codec_tag == MKTAG('h','v','c','1') &&
402 profile != FF_PROFILE_UNKNOWN &&
403 level != FF_LEVEL_UNKNOWN) {
404 snprintf(attr, sizeof(attr), "%s.%d.4.L%d.B01", av_fourcc2str(st->codecpar->codec_tag), profile, level);
407 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
408 snprintf(attr, sizeof(attr), "mp4a.40.33");
409 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
410 snprintf(attr, sizeof(attr), "mp4a.40.34");
411 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
412 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
413 snprintf(attr, sizeof(attr), "mp4a.40.2");
414 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
415 snprintf(attr, sizeof(attr), "ac-3");
416 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
417 snprintf(attr, sizeof(attr), "ec-3");
421 // Don't write the same attribute multiple times
422 if (!av_stristr(vs->codec_attr, attr)) {
423 snprintf(vs->codec_attr + codec_strlen,
424 sizeof(vs->codec_attr) - codec_strlen,
425 "%s%s", codec_strlen ? "," : "", attr);
430 vs->codec_attr[0] = '\0';
431 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
435 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
444 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
451 if (c == '%' && *(p+1) == '%') // %%
453 else if (c == '%' && *(p+1) == placeholder) {
454 av_bprintf(&buf, "%s", datastring);
461 if (addchar_count > 0) {
462 av_bprint_append_data(&buf, p, addchar_count);
466 if (!av_bprint_is_complete(&buf)) {
467 av_bprint_finalize(&buf, NULL);
468 return AVERROR(ENOMEM);
470 if ((ret = av_bprint_finalize(&buf, s)) < 0)
475 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
479 int nd, addchar_count;
484 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
491 if (c == '%' && *(p+1) == '%') // %%
493 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
496 while (av_isdigit(*(p + addchar_count))) {
497 nd = nd * 10 + *(p + addchar_count) - '0';
501 if (*(p + addchar_count) == placeholder) {
502 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
503 p += (addchar_count + 1);
511 av_bprint_append_data(&buf, p, addchar_count);
514 if (!av_bprint_is_complete(&buf)) {
515 av_bprint_finalize(&buf, NULL);
516 return AVERROR(ENOMEM);
518 if ((ret = av_bprint_finalize(&buf, s)) < 0)
523 static void write_styp(AVIOContext *pb)
526 ffio_wfourcc(pb, "styp");
527 ffio_wfourcc(pb, "msdh");
528 avio_wb32(pb, 0); /* minor */
529 ffio_wfourcc(pb, "msdh");
530 ffio_wfourcc(pb, "msix");
533 static int flush_dynbuf(VariantStream *vs, int *range_length)
535 AVFormatContext *ctx = vs->avf;
538 return AVERROR(EINVAL);
542 av_write_frame(ctx, NULL);
545 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
547 avio_write(vs->out, vs->temp_buffer, *range_length);
551 return avio_open_dyn_buf(&ctx->pb);
554 static void reflush_dynbuf(VariantStream *vs, int *range_length)
557 avio_write(vs->out, vs->temp_buffer, *range_length);
561 #define SEPARATOR '\\'
563 #define SEPARATOR '/'
566 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
567 const char *path, const char *proto)
569 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
570 AVDictionary *opt = NULL;
571 AVIOContext *out = NULL;
573 av_dict_set(&opt, "method", "DELETE", 0);
574 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
577 return hls->ignore_io_errors ? 1 : ret;
578 ff_format_io_close(avf, &out);
579 } else if (unlink(path) < 0) {
580 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
581 path, strerror(errno));
586 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
590 HLSSegment *segment, *previous_segment = NULL;
591 float playlist_duration = 0.0f;
595 const char *dirname = NULL;
596 char *dirname_r = NULL;
597 char *dirname_repl = NULL;
598 const char *vtt_dirname = NULL;
599 char *vtt_dirname_r = NULL;
600 const char *proto = NULL;
602 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
604 segment = vs->segments;
606 playlist_duration += segment->duration;
607 segment = segment->next;
610 segment = vs->old_segments;
613 playlist_duration -= segment->duration;
614 previous_segment = segment;
615 segment = previous_segment->next;
617 if (playlist_duration <= -previous_segment->duration) {
618 previous_segment->next = NULL;
621 if (segment_cnt >= hls->hls_delete_threshold) {
622 previous_segment->next = NULL;
627 if (segment && !hls->use_localtime_mkdir) {
628 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
629 dirname = av_dirname(dirname_r);
632 /* if %v is present in the file's directory
633 * all segment belongs to the same variant, so do it only once before the loop*/
634 if (dirname && av_stristr(dirname, "%v")) {
636 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
637 ret = AVERROR(EINVAL);
641 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
642 ret = AVERROR(EINVAL);
647 dirname = dirname_repl;
651 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
653 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
654 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
655 av_bprintf(&path, "%s", segment->filename);
657 if (!av_bprint_is_complete(&path)) {
658 ret = AVERROR(ENOMEM);
662 proto = avio_find_protocol_name(s->url);
663 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
666 if ((segment->sub_filename[0] != '\0')) {
667 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
668 vtt_dirname = av_dirname(vtt_dirname_r);
670 av_bprint_clear(&path);
671 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
672 segment->sub_filename);
673 av_freep(&vtt_dirname_r);
675 if (!av_bprint_is_complete(&path)) {
676 ret = AVERROR(ENOMEM);
680 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
683 av_bprint_clear(&path);
684 previous_segment = segment;
685 segment = previous_segment->next;
686 av_freep(&previous_segment);
690 av_bprint_finalize(&path, NULL);
691 av_freep(&dirname_r);
692 av_freep(&dirname_repl);
697 static int randomize(uint8_t *buf, int len)
700 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
703 if (RAND_bytes(buf, len))
706 return AVERROR(ENOSYS);
708 return AVERROR(EINVAL);
711 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
713 HLSContext *hls = s->priv_data;
717 uint8_t key[KEYSIZE];
718 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
720 len = strlen(key_basename_source) + 4 + 1;
721 hls->key_basename = av_mallocz(len);
722 if (!hls->key_basename)
723 return AVERROR(ENOMEM);
725 av_strlcpy(hls->key_basename, key_basename_source, len);
726 av_strlcat(hls->key_basename, ".key", len);
729 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
730 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
732 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
733 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
736 if (!*hls->iv_string) {
737 uint8_t iv[16] = { 0 };
741 AV_WB64(iv + 8, vs->sequence);
743 memcpy(iv, hls->iv, sizeof(iv));
745 ff_data_to_hex(buf, iv, sizeof(iv), 0);
747 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
750 if (!*hls->key_uri) {
751 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
752 return AVERROR(EINVAL);
755 if (!*hls->key_file) {
756 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
757 return AVERROR(EINVAL);
760 if (!*hls->key_string) {
761 AVDictionary *options = NULL;
763 if ((ret = randomize(key, sizeof(key))) < 0) {
764 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
768 memcpy(key, hls->key, sizeof(key));
771 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
772 set_http_options(s, &options, hls);
773 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
774 av_dict_free(&options);
777 avio_seek(pb, 0, SEEK_CUR);
778 avio_write(pb, key, KEYSIZE);
785 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
787 HLSContext *hls = s->priv_data;
790 uint8_t key[KEYSIZE];
791 AVDictionary *options = NULL;
793 set_http_options(s, &options, hls);
794 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
795 av_dict_free(&options);
797 av_log(hls, AV_LOG_ERROR,
798 "error opening key info file %s\n", hls->key_info_file);
802 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
803 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
805 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
806 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
808 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
809 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
811 ff_format_io_close(s, &pb);
814 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
815 return AVERROR(EINVAL);
818 if (!*vs->key_file) {
819 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
820 return AVERROR(EINVAL);
823 set_http_options(s, &options, hls);
824 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
825 av_dict_free(&options);
827 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
831 ret = avio_read(pb, key, sizeof(key));
832 ff_format_io_close(s, &pb);
833 if (ret != sizeof(key)) {
834 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
835 if (ret >= 0 || ret == AVERROR_EOF)
836 ret = AVERROR(EINVAL);
839 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
844 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
846 AVDictionary *options = NULL;
847 HLSContext *hls = s->priv_data;
849 AVFormatContext *vtt_oc = NULL;
850 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
851 int remaining_options;
854 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
859 oc->url = av_strdup("");
861 return AVERROR(ENOMEM);
863 oc->interrupt_callback = s->interrupt_callback;
864 oc->max_delay = s->max_delay;
865 oc->opaque = s->opaque;
866 oc->io_open = s->io_open;
867 oc->io_close = s->io_close;
868 oc->strict_std_compliance = s->strict_std_compliance;
869 av_dict_copy(&oc->metadata, s->metadata, 0);
871 if (vs->vtt_oformat) {
872 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
875 vtt_oc = vs->vtt_avf;
876 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
879 for (i = 0; i < vs->nb_streams; i++) {
881 AVFormatContext *loc;
882 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
887 if (!(st = avformat_new_stream(loc, NULL)))
888 return AVERROR(ENOMEM);
889 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
890 if (!oc->oformat->codec_tag ||
891 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
892 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
893 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
895 st->codecpar->codec_tag = 0;
898 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
899 st->time_base = vs->streams[i]->time_base;
900 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
906 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
907 if (hls->http_persistent > 0) {
908 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
909 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
911 if (hls->max_seg_size > 0) {
912 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
913 return AVERROR_PATCHWELCOME;
917 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
920 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
921 set_http_options(s, &options, hls);
922 if (byterange_mode) {
923 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
925 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
927 av_dict_free(&options);
930 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
934 av_dict_copy(&options, hls->format_options, 0);
935 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
936 av_dict_set(&options, "fflags", "-autobsf", 0);
937 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
939 /* We only require one PAT/PMT per segment. */
941 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
942 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
943 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
945 ret = avformat_init_output(oc, &options);
946 remaining_options = av_dict_count(options);
947 av_dict_free(&options);
950 if (remaining_options) {
951 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
952 return AVERROR(EINVAL);
958 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
961 if (!av_strcasecmp(segment->filename,filename))
963 segment = segment->next;
965 return (HLSSegment *) NULL;
968 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
969 VariantStream *vs, HLSSegment *en,
970 double duration, int64_t pos, int64_t size)
972 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
973 strlen(vs->current_segment_final_filename_fmt)) {
974 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
976 return AVERROR(ENOMEM);
978 ff_format_set_url(vs->avf, new_url);
979 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
980 char *filename = NULL;
981 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
982 av_log(hls, AV_LOG_ERROR,
983 "Invalid second level segment filename template '%s', "
984 "you can try to remove second_level_segment_size flag\n",
987 return AVERROR(EINVAL);
989 ff_format_set_url(vs->avf, filename);
991 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
992 char *filename = NULL;
993 if (replace_int_data_in_filename(&filename, vs->avf->url,
994 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
995 av_log(hls, AV_LOG_ERROR,
996 "Invalid second level segment filename template '%s', "
997 "you can try to remove second_level_segment_time flag\n",
1000 return AVERROR(EINVAL);
1002 ff_format_set_url(vs->avf, filename);
1008 static int sls_flag_check_duration_size_index(HLSContext *hls)
1012 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1013 av_log(hls, AV_LOG_ERROR,
1014 "second_level_segment_duration hls_flag requires strftime to be true\n");
1015 ret = AVERROR(EINVAL);
1017 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1018 av_log(hls, AV_LOG_ERROR,
1019 "second_level_segment_size hls_flag requires strfime to be true\n");
1020 ret = AVERROR(EINVAL);
1022 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1023 av_log(hls, AV_LOG_ERROR,
1024 "second_level_segment_index hls_flag requires strftime to be true\n");
1025 ret = AVERROR(EINVAL);
1031 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
1033 const char *proto = avio_find_protocol_name(vs->basename);
1034 int segment_renaming_ok = proto && !strcmp(proto, "file");
1037 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1038 av_log(hls, AV_LOG_ERROR,
1039 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1040 ret = AVERROR(EINVAL);
1042 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1043 av_log(hls, AV_LOG_ERROR,
1044 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1045 ret = AVERROR(EINVAL);
1051 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
1052 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1053 strlen(vs->current_segment_final_filename_fmt)) {
1054 ff_rename(old_filename, vs->avf->url, hls);
1058 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
1060 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1061 char *filename = NULL;
1062 if (replace_int_data_in_filename(&filename,
1063 oc->url, 'd', vs->sequence) < 1) {
1064 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1065 "you can try to remove second_level_segment_index flag\n",
1067 av_freep(&filename);
1068 return AVERROR(EINVAL);
1070 ff_format_set_url(oc, filename);
1072 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1073 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1074 sizeof(vs->current_segment_final_filename_fmt));
1075 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1076 char *filename = NULL;
1077 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1078 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1079 "you can try to remove second_level_segment_size flag\n",
1081 av_freep(&filename);
1082 return AVERROR(EINVAL);
1084 ff_format_set_url(oc, filename);
1086 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1087 char *filename = NULL;
1088 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1089 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1090 "you can try to remove second_level_segment_time flag\n",
1092 av_freep(&filename);
1093 return AVERROR(EINVAL);
1095 ff_format_set_url(oc, filename);
1101 /* Create a new segment and append it to the segment list */
1102 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1103 VariantStream *vs, double duration, int64_t pos,
1106 HLSSegment *en = av_malloc(sizeof(*en));
1107 const char *filename;
1108 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1112 return AVERROR(ENOMEM);
1114 en->var_stream_idx = vs->var_stream_idx;
1115 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1121 filename = av_basename(vs->avf->url);
1123 if (hls->use_localtime_mkdir) {
1124 filename = vs->avf->url;
1126 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1127 && !byterange_mode) {
1128 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1130 av_strlcpy(en->filename, filename, sizeof(en->filename));
1132 if (vs->has_subtitle)
1133 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1135 en->sub_filename[0] = '\0';
1137 en->duration = duration;
1140 en->keyframe_pos = vs->video_keyframe_pos;
1141 en->keyframe_size = vs->video_keyframe_size;
1144 en->discont_program_date_time = 0;
1146 if (vs->discontinuity) {
1148 vs->discontinuity = 0;
1151 if (hls->key_info_file || hls->encrypt) {
1152 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1153 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1159 vs->last_segment->next = en;
1161 vs->last_segment = en;
1163 // EVENT or VOD playlists imply sliding window cannot be used
1164 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1165 hls->max_nb_segments = 0;
1167 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1169 if (!en->next->discont_program_date_time && !en->discont_program_date_time)
1170 vs->initial_prog_date_time += en->duration;
1171 vs->segments = en->next;
1172 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1173 !(hls->flags & HLS_SINGLE_FILE)) {
1174 en->next = vs->old_segments;
1175 vs->old_segments = en;
1176 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1183 if (hls->max_seg_size > 0) {
1191 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1193 HLSContext *hls = s->priv_data;
1195 int ret = 0, is_segment = 0;
1196 int64_t new_start_pos;
1197 char line[MAX_URL_SIZE];
1200 double discont_program_date_time = 0;
1202 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1203 &s->interrupt_callback, NULL,
1204 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1207 ff_get_chomp_line(in, line, sizeof(line));
1208 if (strcmp(line, "#EXTM3U")) {
1209 ret = AVERROR_INVALIDDATA;
1213 vs->discontinuity = 0;
1214 while (!avio_feof(in)) {
1215 ff_get_chomp_line(in, line, sizeof(line));
1216 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1217 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1218 if (tmp_sequence < vs->sequence)
1219 av_log(hls, AV_LOG_VERBOSE,
1220 "Found playlist sequence number was smaller """
1221 "than specified start sequence number: %"PRId64" < %"PRId64", "
1222 "omitting\n", tmp_sequence, hls->start_sequence);
1224 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1225 vs->sequence = tmp_sequence;
1227 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1229 vs->discontinuity = 1;
1230 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1232 vs->duration = atof(ptr);
1233 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1234 ptr = av_stristr(line, "URI=\"");
1236 ptr += strlen("URI=\"");
1237 end = av_stristr(ptr, ",");
1239 av_strlcpy(vs->key_uri, ptr, end - ptr);
1241 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1245 ptr = av_stristr(line, "IV=0x");
1247 ptr += strlen("IV=0x");
1248 end = av_stristr(ptr, ",");
1250 av_strlcpy(vs->iv_string, ptr, end - ptr);
1252 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1255 } else if (av_strstart(line, "#EXT-X-PROGRAM-DATE-TIME:", &ptr)) {
1256 struct tm program_date_time;
1259 if (sscanf(ptr, "%d-%d-%dT%d:%d:%d.%lf", &y, &M, &d, &h, &m, &s, &ms) != 7) {
1260 ret = AVERROR_INVALIDDATA;
1264 program_date_time.tm_year = y - 1900;
1265 program_date_time.tm_mon = M - 1;
1266 program_date_time.tm_mday = d;
1267 program_date_time.tm_hour = h;
1268 program_date_time.tm_min = m;
1269 program_date_time.tm_sec = s;
1270 program_date_time.tm_isdst = -1;
1272 discont_program_date_time = mktime(&program_date_time);
1273 discont_program_date_time += (double)(ms / 1000);
1274 } else if (av_strstart(line, "#", NULL)) {
1276 } else if (line[0]) {
1278 char *new_file = av_strdup(line);
1280 ret = AVERROR(ENOMEM);
1283 ff_format_set_url(vs->avf, new_file);
1285 new_start_pos = avio_tell(vs->avf->pb);
1286 vs->size = new_start_pos - vs->start_pos;
1287 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1288 vs->last_segment->discont_program_date_time = discont_program_date_time;
1289 discont_program_date_time += vs->duration;
1292 vs->start_pos = new_start_pos;
1302 static void hls_free_segments(HLSSegment *p)
1313 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1315 size_t len = strlen(oc->url);
1316 char *final_filename = av_strdup(oc->url);
1319 if (!final_filename)
1320 return AVERROR(ENOMEM);
1321 final_filename[len-4] = '\0';
1322 ret = ff_rename(oc->url, final_filename, s);
1323 oc->url[len-4] = '\0';
1324 av_freep(&final_filename);
1328 static const char* get_relative_url(const char *master_url, const char *media_url)
1330 const char *p = strrchr(master_url, '/');
1331 size_t base_len = 0;
1333 if (!p) p = strrchr(master_url, '\\');
1336 base_len = p - master_url;
1337 if (av_strncasecmp(master_url, media_url, base_len)) {
1338 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1345 return media_url + base_len + 1;
1348 static int64_t get_stream_bit_rate(AVStream *stream)
1350 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1352 AV_PKT_DATA_CPB_PROPERTIES,
1356 if (stream->codecpar->bit_rate)
1357 return stream->codecpar->bit_rate;
1359 return props->max_bitrate;
1364 static int create_master_playlist(AVFormatContext *s,
1365 VariantStream * const input_vs)
1367 HLSContext *hls = s->priv_data;
1368 VariantStream *vs, *temp_vs;
1369 AVStream *vid_st, *aud_st;
1370 AVDictionary *options = NULL;
1373 const char *m3u8_rel_name = NULL;
1374 const char *vtt_m3u8_rel_name = NULL;
1375 const char *ccgroup;
1376 const char *sgroup = NULL;
1377 ClosedCaptionsStream *ccs;
1378 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1379 int is_file_proto = proto && !strcmp(proto, "file");
1380 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1381 char temp_filename[MAX_URL_SIZE];
1383 input_vs->m3u8_created = 1;
1384 if (!hls->master_m3u8_created) {
1385 /* For the first time, wait until all the media playlists are created */
1386 for (i = 0; i < hls->nb_varstreams; i++)
1387 if (!hls->var_streams[i].m3u8_created)
1390 /* Keep publishing the master playlist at the configured rate */
1391 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1392 input_vs->number % hls->master_publish_rate)
1396 set_http_options(s, &options, hls);
1397 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1398 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1399 av_dict_free(&options);
1401 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1406 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1408 for (i = 0; i < hls->nb_ccstreams; i++) {
1409 ccs = &(hls->cc_streams[i]);
1410 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1411 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1412 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1414 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1415 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1418 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1419 for (i = 0; i < hls->nb_varstreams; i++) {
1420 vs = &(hls->var_streams[i]);
1422 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1425 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1426 if (!m3u8_rel_name) {
1427 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1431 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1434 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1435 for (i = 0; i < hls->nb_varstreams; i++) {
1436 vs = &(hls->var_streams[i]);
1438 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1439 if (!m3u8_rel_name) {
1440 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1446 for (j = 0; j < vs->nb_streams; j++) {
1447 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1448 vid_st = vs->streams[j];
1449 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1450 aud_st = vs->streams[j];
1453 if (!vid_st && !aud_st) {
1454 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1459 * Traverse through the list of audio only rendition streams and find
1460 * the rendition which has highest bitrate in the same audio group
1463 for (j = 0; j < hls->nb_varstreams; j++) {
1464 temp_vs = &(hls->var_streams[j]);
1465 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1467 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1469 aud_st = temp_vs->streams[0];
1470 if (temp_vs->streams[0]->codecpar->bit_rate >
1471 aud_st->codecpar->bit_rate)
1472 aud_st = temp_vs->streams[0];
1479 bandwidth += get_stream_bit_rate(vid_st);
1481 bandwidth += get_stream_bit_rate(aud_st);
1482 bandwidth += bandwidth / 10;
1485 if (vid_st && vs->ccgroup) {
1486 /* check if this group name is available in the cc map string */
1487 for (j = 0; j < hls->nb_ccstreams; j++) {
1488 ccs = &(hls->cc_streams[j]);
1489 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1490 ccgroup = vs->ccgroup;
1494 if (j == hls->nb_ccstreams)
1495 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1499 if (vid_st && vs->sgroup) {
1500 sgroup = vs->sgroup;
1501 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1502 if (!vtt_m3u8_rel_name) {
1503 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1507 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1510 if (!hls->has_default_key || !hls->has_video_m3u8) {
1511 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1512 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1515 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1516 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1522 hls->master_m3u8_created = 1;
1523 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1525 ff_rename(temp_filename, hls->master_m3u8_url, s);
1530 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1532 HLSContext *hls = s->priv_data;
1534 int target_duration = 0;
1536 char temp_filename[MAX_URL_SIZE];
1537 char temp_vtt_filename[MAX_URL_SIZE];
1538 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1539 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1540 int is_file_proto = proto && !strcmp(proto, "file");
1541 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1542 static unsigned warned_non_file;
1543 char *key_uri = NULL;
1544 char *iv_string = NULL;
1545 AVDictionary *options = NULL;
1546 double prog_date_time = vs->initial_prog_date_time;
1547 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1548 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1551 if (byterange_mode) {
1556 if (hls->flags & HLS_I_FRAMES_ONLY) {
1560 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1564 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1568 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1569 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1571 set_http_options(s, &options, hls);
1572 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1573 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1574 if (hls->ignore_io_errors)
1579 for (en = vs->segments; en; en = en->next) {
1580 if (target_duration <= en->duration)
1581 target_duration = lrint(en->duration);
1584 vs->discontinuity_set = 0;
1585 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1586 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1588 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1589 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1590 vs->discontinuity_set = 1;
1592 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1593 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1595 for (en = vs->segments; en; en = en->next) {
1596 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1597 av_strcasecmp(en->iv_string, iv_string))) {
1598 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1600 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1601 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1602 key_uri = en->key_uri;
1603 iv_string = en->iv_string;
1606 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1607 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1608 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1611 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1612 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1613 en->size, en->pos, hls->baseurl,
1615 en->discont_program_date_time ? &en->discont_program_date_time : prog_date_time_p,
1616 en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1617 if (en->discont_program_date_time)
1618 en->discont_program_date_time -= en->duration;
1620 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1624 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1625 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1627 if (vs->vtt_m3u8_name) {
1628 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1629 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1630 if (hls->ignore_io_errors)
1634 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1635 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1636 for (en = vs->segments; en; en = en->next) {
1637 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1638 en->duration, 0, en->size, en->pos,
1639 hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1641 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1646 ff_hls_write_end_list(hls->sub_m3u8_out);
1651 av_dict_free(&options);
1652 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1656 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1657 if (use_temp_file) {
1658 ff_rename(temp_filename, vs->m3u8_name, s);
1659 if (vs->vtt_m3u8_name)
1660 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1662 if (ret >= 0 && hls->master_pl_name)
1663 if (create_master_playlist(s, vs) < 0)
1664 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1669 static int hls_start(AVFormatContext *s, VariantStream *vs)
1671 HLSContext *c = s->priv_data;
1672 AVFormatContext *oc = vs->avf;
1673 AVFormatContext *vtt_oc = vs->vtt_avf;
1674 AVDictionary *options = NULL;
1675 const char *proto = NULL;
1676 int use_temp_file = 0;
1677 char iv_string[KEYSIZE*2 + 1];
1680 if (c->flags & HLS_SINGLE_FILE) {
1681 char *new_name = av_strdup(vs->basename);
1683 return AVERROR(ENOMEM);
1684 ff_format_set_url(oc, new_name);
1685 if (vs->vtt_basename) {
1686 new_name = av_strdup(vs->vtt_basename);
1688 return AVERROR(ENOMEM);
1689 ff_format_set_url(vtt_oc, new_name);
1691 } else if (c->max_seg_size > 0) {
1692 char *filename = NULL;
1693 if (replace_int_data_in_filename(&filename,
1694 vs->basename, 'd', vs->sequence) < 1) {
1695 av_freep(&filename);
1696 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1697 return AVERROR(EINVAL);
1699 ff_format_set_url(oc, filename);
1701 if (c->use_localtime) {
1703 char *expanded = NULL;
1705 r = strftime_expand(vs->basename, &expanded);
1707 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1710 ff_format_set_url(oc, expanded);
1712 err = sls_flag_use_localtime_filename(oc, c, vs);
1714 return AVERROR(ENOMEM);
1717 if (c->use_localtime_mkdir) {
1719 char *fn_copy = av_strdup(oc->url);
1721 return AVERROR(ENOMEM);
1722 dir = av_dirname(fn_copy);
1723 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1724 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1726 return AVERROR(errno);
1731 char *filename = NULL;
1732 if (replace_int_data_in_filename(&filename,
1733 vs->basename, 'd', vs->sequence) < 1) {
1734 av_freep(&filename);
1735 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1736 return AVERROR(EINVAL);
1738 ff_format_set_url(oc, filename);
1740 if (vs->vtt_basename) {
1741 char *filename = NULL;
1742 if (replace_int_data_in_filename(&filename,
1743 vs->vtt_basename, 'd', vs->sequence) < 1) {
1744 av_freep(&filename);
1745 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1746 return AVERROR(EINVAL);
1748 ff_format_set_url(vtt_oc, filename);
1752 proto = avio_find_protocol_name(oc->url);
1753 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1755 if (use_temp_file) {
1756 char *new_name = av_asprintf("%s.tmp", oc->url);
1758 return AVERROR(ENOMEM);
1759 ff_format_set_url(oc, new_name);
1762 if (c->key_info_file || c->encrypt) {
1763 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1764 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1765 return AVERROR_PATCHWELCOME;
1768 if (c->key_info_file && c->encrypt) {
1769 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1770 " ignoring -hls_enc\n");
1773 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1774 if (c->key_info_file) {
1775 if ((err = hls_encryption_start(s, vs)) < 0)
1778 if (!c->encrypt_started) {
1779 if ((err = do_encrypt(s, vs)) < 0)
1781 c->encrypt_started = 1;
1783 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1784 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1785 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1787 vs->encrypt_started = 1;
1789 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1791 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1792 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1793 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1796 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1797 if (oc->oformat->priv_class && oc->priv_data) {
1798 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1800 if (c->flags & HLS_SINGLE_FILE) {
1801 if (c->key_info_file || c->encrypt) {
1802 av_dict_set(&options, "encryption_key", vs->key_string, 0);
1803 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
1805 /* Write temp file with cryption content */
1806 av_freep(&vs->basename_tmp);
1807 vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
1809 /* append temp file content into single file */
1810 av_freep(&vs->basename);
1811 vs->basename = av_asprintf("%s", oc->url);
1813 vs->basename_tmp = vs->basename;
1815 set_http_options(s, &options, c);
1816 if (!vs->out_single_file)
1817 if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
1818 if (c->ignore_io_errors)
1823 if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
1824 if (c->ignore_io_errors)
1831 if (vs->vtt_basename) {
1832 set_http_options(s, &options, c);
1833 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1834 if (c->ignore_io_errors)
1839 av_dict_free(&options);
1841 if (vs->vtt_basename) {
1842 err = avformat_write_header(vtt_oc,NULL);
1849 av_dict_free(&options);
1854 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1857 time_t t = time(NULL);
1858 struct tm *p, tmbuf;
1859 HLSContext *hls = s->priv_data;
1861 p = localtime_r(&t, &tmbuf);
1862 // no %s support when strftime returned error or left format string unchanged
1863 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1864 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1865 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1867 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1870 static int append_postfix(char *name, int name_buf_len, int i)
1873 char extension[10] = {'\0'};
1875 p = strrchr(name, '.');
1877 av_strlcpy(extension, p, sizeof(extension));
1881 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1883 if (strlen(extension))
1884 av_strlcat(name, extension, name_buf_len);
1889 static int validate_name(int nb_vs, const char *fn)
1891 const char *filename, *subdir_name;
1892 char *fn_dup = NULL;
1896 return AVERROR(EINVAL);
1898 fn_dup = av_strdup(fn);
1900 return AVERROR(ENOMEM);
1901 filename = av_basename(fn);
1902 subdir_name = av_dirname(fn_dup);
1904 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1905 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1906 "either in the filename or in the sub-directory name of file %s\n", fn);
1907 ret = AVERROR(EINVAL);
1911 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1912 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1913 "in the sub-directory name of file %s, but only in one of them\n", fn);
1914 ret = AVERROR(EINVAL);
1923 static int format_name(const char *buf, char **s, int index, const char *varname)
1925 const char *proto, *dir;
1926 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1929 orig_buf_dup = av_strdup(buf);
1931 return AVERROR(ENOMEM);
1933 if (!av_stristr(buf, "%v")) {
1939 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1940 ret = AVERROR(EINVAL);
1944 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1945 ret = AVERROR(EINVAL);
1950 proto = avio_find_protocol_name(orig_buf_dup);
1951 dir = av_dirname(orig_buf_dup);
1953 /* if %v is present in the file's directory, create sub-directory */
1954 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1955 mod_buf_dup = av_strdup(*s);
1956 dir = av_dirname(mod_buf_dup);
1957 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1958 ret = AVERROR(errno);
1964 av_freep(&orig_buf_dup);
1965 av_freep(&mod_buf_dup);
1969 static int get_nth_codec_stream_index(AVFormatContext *s,
1970 enum AVMediaType codec_type,
1973 unsigned int stream_index, cnt;
1974 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1977 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1978 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1980 if (cnt == stream_id)
1981 return stream_index;
1987 static int parse_variant_stream_mapstring(AVFormatContext *s)
1989 HLSContext *hls = s->priv_data;
1991 int stream_index, i, j;
1992 enum AVMediaType codec_type;
1993 int nb_varstreams = 0, nb_streams;
1994 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1998 * Expected format for var_stream_map string is as below:
2000 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
2001 * This string specifies how to group the audio, video and subtitle streams
2002 * into different variant streams. The variant stream groups are separated
2005 * a:, v:, s: are keys to specify audio, video and subtitle streams
2006 * respectively. Allowed values are 0 to 9 digits (limited just based on
2009 * agroup: is key to specify audio group. A string can be given as value.
2010 * sgroup: is key to specify subtitle group. A string can be given as value.
2012 p = av_strdup(hls->var_stream_map);
2014 return AVERROR(ENOMEM);
2017 while (av_strtok(q, " \t", &saveptr1)) {
2023 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
2024 if (!hls->var_streams)
2025 return AVERROR(ENOMEM);
2026 hls->nb_varstreams = nb_varstreams;
2028 p = hls->var_stream_map;
2030 while (varstr = av_strtok(p, " \t", &saveptr1)) {
2033 if (nb_varstreams < hls->nb_varstreams) {
2034 vs = &(hls->var_streams[nb_varstreams]);
2035 vs->var_stream_idx = nb_varstreams;
2039 return AVERROR(EINVAL);
2043 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
2044 !av_strncasecmp(q, "s:", 2))
2051 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
2053 return AVERROR(ENOMEM);
2056 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
2060 if (av_strstart(keyval, "language:", &val)) {
2063 } else if (av_strstart(keyval, "default:", &val)) {
2064 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
2065 (!av_strncasecmp(val, "1", strlen("1"))));
2066 hls->has_default_key = 1;
2068 } else if (av_strstart(keyval, "name:", &val)) {
2071 } else if (av_strstart(keyval, "agroup:", &val)) {
2074 } else if (av_strstart(keyval, "sgroup:", &val)) {
2077 } else if (av_strstart(keyval, "ccgroup:", &val)) {
2080 } else if (av_strstart(keyval, "v:", &val)) {
2081 codec_type = AVMEDIA_TYPE_VIDEO;
2082 hls->has_video_m3u8 = 1;
2083 } else if (av_strstart(keyval, "a:", &val)) {
2084 codec_type = AVMEDIA_TYPE_AUDIO;
2085 } else if (av_strstart(keyval, "s:", &val)) {
2086 codec_type = AVMEDIA_TYPE_SUBTITLE;
2088 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2089 return AVERROR(EINVAL);
2092 num = strtoll(val, &end, 10);
2093 if (!av_isdigit(*val) || *end != '\0') {
2094 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2095 return AVERROR(EINVAL);
2097 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2099 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2100 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2101 if (vs->streams[i] == s->streams[stream_index]) {
2102 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2103 "variant definition #%d\n", nb_varstreams - 1);
2104 return AVERROR(EINVAL);
2107 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2108 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2109 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2110 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2111 "in two different variant definitions #%d and #%d\n",
2112 j, nb_varstreams - 1);
2113 return AVERROR(EINVAL);
2117 vs->streams[nb_streams++] = s->streams[stream_index];
2119 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2120 return AVERROR(EINVAL);
2124 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2125 hls->nb_varstreams);
2130 static int parse_cc_stream_mapstring(AVFormatContext *s)
2132 HLSContext *hls = s->priv_data;
2133 int nb_ccstreams = 0;
2134 char *p, *q, *ccstr, *keyval;
2135 char *saveptr1 = NULL, *saveptr2 = NULL;
2137 ClosedCaptionsStream *ccs;
2139 p = av_strdup(hls->cc_stream_map);
2141 return AVERROR(ENOMEM);
2144 while (av_strtok(q, " \t", &saveptr1)) {
2150 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2151 if (!hls->cc_streams)
2152 return AVERROR(ENOMEM);
2153 hls->nb_ccstreams = nb_ccstreams;
2155 p = hls->cc_stream_map;
2157 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2160 if (nb_ccstreams < hls->nb_ccstreams)
2161 ccs = &(hls->cc_streams[nb_ccstreams++]);
2163 return AVERROR(EINVAL);
2165 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2168 if (av_strstart(keyval, "ccgroup:", &val)) {
2170 } else if (av_strstart(keyval, "instreamid:", &val)) {
2171 ccs->instreamid = val;
2172 } else if (av_strstart(keyval, "language:", &val)) {
2173 ccs->language = val;
2175 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2176 return AVERROR(EINVAL);
2180 if (!ccs->ccgroup || !ccs->instreamid) {
2181 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2182 return AVERROR(EINVAL);
2185 if (av_strstart(ccs->instreamid, "CC", &val)) {
2186 if (atoi(val) < 1 || atoi(val) > 4) {
2187 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2188 atoi(val), ccs->instreamid);
2189 return AVERROR(EINVAL);
2191 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2192 if (atoi(val) < 1 || atoi(val) > 63) {
2193 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2194 atoi(val), ccs->instreamid);
2195 return AVERROR(EINVAL);
2198 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2200 return AVERROR(EINVAL);
2207 static int update_variant_stream_info(AVFormatContext *s)
2209 HLSContext *hls = s->priv_data;
2213 if (hls->cc_stream_map) {
2214 ret = parse_cc_stream_mapstring(s);
2219 if (hls->var_stream_map) {
2220 return parse_variant_stream_mapstring(s);
2222 //By default, a single variant stream with all the codec streams is created
2223 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2224 if (!hls->var_streams)
2225 return AVERROR(ENOMEM);
2226 hls->nb_varstreams = 1;
2228 hls->var_streams[0].var_stream_idx = 0;
2229 hls->var_streams[0].nb_streams = s->nb_streams;
2230 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2231 hls->var_streams[0].nb_streams);
2232 if (!hls->var_streams[0].streams)
2233 return AVERROR(ENOMEM);
2235 //by default, the first available ccgroup is mapped to the variant stream
2236 if (hls->nb_ccstreams)
2237 hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2239 for (i = 0; i < s->nb_streams; i++)
2240 hls->var_streams[0].streams[i] = s->streams[i];
2245 static int update_master_pl_info(AVFormatContext *s)
2247 HLSContext *hls = s->priv_data;
2249 char *fn1= NULL, *fn2 = NULL;
2252 fn1 = av_strdup(s->url);
2254 return AVERROR(ENOMEM);
2255 dir = av_dirname(fn1);
2258 * if output file's directory has %v, variants are created in sub-directories
2259 * then master is created at the sub-directories level
2261 if (dir && av_stristr(av_basename(dir), "%v")) {
2262 fn2 = av_strdup(dir);
2264 ret = AVERROR(ENOMEM);
2267 dir = av_dirname(fn2);
2270 if (dir && strcmp(dir, "."))
2271 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2273 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2275 if (!hls->master_m3u8_url) {
2276 ret = AVERROR(ENOMEM);
2287 static int hls_write_header(AVFormatContext *s)
2289 HLSContext *hls = s->priv_data;
2291 VariantStream *vs = NULL;
2293 for (i = 0; i < hls->nb_varstreams; i++) {
2294 vs = &hls->var_streams[i];
2296 ret = avformat_write_header(vs->avf, NULL);
2299 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2300 for (j = 0; j < vs->nb_streams; j++) {
2302 AVStream *outer_st = vs->streams[j];
2304 if (hls->max_seg_size > 0) {
2305 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2306 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2307 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2308 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2309 outer_st->codecpar->bit_rate, hls->max_seg_size);
2313 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2314 inner_st = vs->avf->streams[j];
2315 else if (vs->vtt_avf)
2316 inner_st = vs->vtt_avf->streams[0];
2318 /* We have a subtitle stream, when the user does not want one */
2322 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2323 if (outer_st->codecpar->codec_id == AV_CODEC_ID_HEVC &&
2324 outer_st->codecpar->codec_tag != MKTAG('h','v','c','1')) {
2325 av_log(s, AV_LOG_WARNING, "Stream HEVC is not hvc1, you should use tag:v hvc1 to set it.\n");
2327 write_codec_attr(outer_st, vs);
2330 /* Update the Codec Attr string for the mapped audio groups */
2331 if (vs->has_video && vs->agroup) {
2332 for (j = 0; j < hls->nb_varstreams; j++) {
2333 VariantStream *vs_agroup = &(hls->var_streams[j]);
2334 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2335 vs_agroup->agroup &&
2336 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2337 write_codec_attr(vs_agroup->streams[0], vs);
2346 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2348 HLSContext *hls = s->priv_data;
2349 AVDictionary *options = NULL;
2352 set_http_options(s, &options, hls);
2353 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2354 av_dict_free(&options);
2357 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2358 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2363 static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
2366 int64_t read_byte = 0;
2367 int64_t total_size = 0;
2368 char *filename = NULL;
2370 AVFormatContext *oc = vs->avf;
2372 hlsenc_io_close(s, &vs->out, vs->basename_tmp);
2373 filename = av_asprintf("%s.tmp", oc->url);
2374 ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
2381 memset(buf, 0, sizeof(BUFSIZE));
2382 read_byte = avio_read(vs->out, buf, BUFSIZE);
2383 avio_write(vs->out_single_file, buf, read_byte);
2384 if (read_byte > 0) {
2385 total_size += read_byte;
2388 } while (read_byte > 0);
2390 hlsenc_io_close(s, &vs->out, filename);
2395 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2397 HLSContext *hls = s->priv_data;
2398 AVFormatContext *oc = NULL;
2399 AVStream *st = s->streams[pkt->stream_index];
2400 int64_t end_pts = 0;
2402 int ret = 0, can_split = 1, i, j;
2403 int stream_index = 0;
2404 int range_length = 0;
2405 const char *proto = NULL;
2406 int use_temp_file = 0;
2407 VariantStream *vs = NULL;
2408 char *old_filename = NULL;
2410 for (i = 0; i < hls->nb_varstreams; i++) {
2411 vs = &hls->var_streams[i];
2412 for (j = 0; j < vs->nb_streams; j++) {
2413 if (vs->streams[j] == st) {
2414 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2430 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2431 return AVERROR(ENOMEM);
2434 end_pts = hls->recording_time * vs->number;
2436 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2437 /* reset end_pts, hls->recording_time at end of the init hls list */
2438 int64_t init_list_dur = hls->init_time * vs->nb_entries;
2439 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * hls->time;
2440 hls->recording_time = hls->time;
2441 end_pts = init_list_dur + after_init_list_dur ;
2444 if (vs->start_pts == AV_NOPTS_VALUE) {
2445 vs->start_pts = pkt->pts;
2446 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2447 vs->start_pts_from_audio = 1;
2449 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2450 vs->start_pts = pkt->pts;
2451 vs->start_pts_from_audio = 0;
2454 if (vs->has_video) {
2455 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2456 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2457 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2459 if (pkt->pts == AV_NOPTS_VALUE)
2460 is_ref_pkt = can_split = 0;
2463 if (vs->end_pts == AV_NOPTS_VALUE)
2464 vs->end_pts = pkt->pts;
2465 if (vs->new_start) {
2467 vs->duration = (double)(pkt->pts - vs->end_pts)
2468 * st->time_base.num / st->time_base.den;
2469 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2471 if (pkt->duration) {
2472 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2474 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2475 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2480 can_split = can_split && (pkt->pts - vs->end_pts > 0);
2481 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2482 end_pts, AV_TIME_BASE_Q) >= 0) {
2483 int64_t new_start_pos;
2484 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2486 av_write_frame(oc, NULL); /* Flush any buffered data */
2487 new_start_pos = avio_tell(oc->pb);
2488 vs->size = new_start_pos - vs->start_pos;
2490 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2491 if (!vs->init_range_length) {
2492 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2493 if (range_length <= 0)
2494 return AVERROR(EINVAL);
2495 avio_write(vs->out, vs->init_buffer, range_length);
2496 if (!hls->resend_init_file)
2497 av_freep(&vs->init_buffer);
2498 vs->init_range_length = range_length;
2499 avio_open_dyn_buf(&oc->pb);
2500 vs->packets_written = 0;
2501 vs->start_pos = range_length;
2502 if (!byterange_mode) {
2503 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2507 if (!byterange_mode) {
2509 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2513 if (hls->flags & HLS_SINGLE_FILE) {
2514 ret = flush_dynbuf(vs, &range_length);
2515 av_freep(&vs->temp_buffer);
2519 vs->size = range_length;
2520 if (hls->key_info_file || hls->encrypt)
2521 vs->size = append_single_file(s, vs);
2524 proto = avio_find_protocol_name(oc->url);
2525 use_temp_file = proto && !strcmp(proto, "file")
2526 && (hls->flags & HLS_TEMP_FILE);
2529 if ((hls->max_seg_size > 0 && (vs->size + vs->start_pos >= hls->max_seg_size)) || !byterange_mode) {
2530 AVDictionary *options = NULL;
2531 char *filename = NULL;
2532 if (hls->key_info_file || hls->encrypt) {
2533 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2534 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2535 filename = av_asprintf("crypto:%s", oc->url);
2537 filename = av_asprintf("%s", oc->url);
2540 av_dict_free(&options);
2541 return AVERROR(ENOMEM);
2544 // look to rename the asset name
2546 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2548 set_http_options(s, &options, hls);
2550 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2552 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2553 "Failed to open file '%s'\n", filename);
2554 av_freep(&filename);
2555 av_dict_free(&options);
2556 return hls->ignore_io_errors ? 0 : ret;
2558 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2559 write_styp(vs->out);
2561 ret = flush_dynbuf(vs, &range_length);
2563 av_freep(&filename);
2564 av_dict_free(&options);
2567 ret = hlsenc_io_close(s, &vs->out, filename);
2569 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2570 " will retry with a new http session.\n");
2571 ff_format_io_close(s, &vs->out);
2572 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2573 reflush_dynbuf(vs, &range_length);
2574 ret = hlsenc_io_close(s, &vs->out, filename);
2576 av_dict_free(&options);
2577 av_freep(&vs->temp_buffer);
2578 av_freep(&filename);
2582 hls_rename_temp_file(s, oc);
2585 old_filename = av_strdup(oc->url);
2586 if (!old_filename) {
2587 return AVERROR(ENOMEM);
2590 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2591 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2592 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2593 vs->end_pts = pkt->pts;
2596 av_freep(&old_filename);
2601 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2602 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2603 if ((ret = hls_window(s, 0, vs)) < 0) {
2604 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2605 ff_format_io_close(s, &vs->out);
2606 if ((ret = hls_window(s, 0, vs)) < 0) {
2607 av_freep(&old_filename);
2613 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2614 ret = hls_init_file_resend(s, vs);
2616 av_freep(&old_filename);
2621 if (hls->flags & HLS_SINGLE_FILE) {
2622 vs->start_pos += vs->size;
2623 if (hls->key_info_file || hls->encrypt)
2624 ret = hls_start(s, vs);
2625 } else if (hls->max_seg_size > 0) {
2626 if (vs->size + vs->start_pos >= hls->max_seg_size) {
2628 sls_flag_file_rename(hls, vs, old_filename);
2629 ret = hls_start(s, vs);
2631 /* When split segment by byte, the duration is short than hls_time,
2632 * so it is not enough one segment duration as hls_time, */
2634 vs->start_pos = new_start_pos;
2637 vs->start_pos = new_start_pos;
2638 sls_flag_file_rename(hls, vs, old_filename);
2639 ret = hls_start(s, vs);
2642 av_freep(&old_filename);
2650 vs->packets_written++;
2652 int64_t keyframe_pre_pos = avio_tell(oc->pb);
2653 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2654 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2655 (pkt->flags & AV_PKT_FLAG_KEY) && !keyframe_pre_pos) {
2656 av_write_frame(oc, NULL); /* Flush any buffered data */
2657 vs->video_keyframe_size = avio_tell(oc->pb) - keyframe_pre_pos;
2659 vs->video_keyframe_pos = vs->start_pos;
2660 if (hls->ignore_io_errors)
2667 static void hls_deinit(AVFormatContext *s)
2669 HLSContext *hls = s->priv_data;
2671 VariantStream *vs = NULL;
2673 for (i = 0; i < hls->nb_varstreams; i++) {
2674 vs = &hls->var_streams[i];
2676 av_freep(&vs->basename);
2677 av_freep(&vs->base_output_dirname);
2678 av_freep(&vs->fmp4_init_filename);
2679 av_freep(&vs->vtt_basename);
2680 av_freep(&vs->vtt_m3u8_name);
2682 avformat_free_context(vs->vtt_avf);
2683 avformat_free_context(vs->avf);
2684 if (hls->resend_init_file)
2685 av_freep(&vs->init_buffer);
2686 hls_free_segments(vs->segments);
2687 hls_free_segments(vs->old_segments);
2688 av_freep(&vs->m3u8_name);
2689 av_freep(&vs->streams);
2692 ff_format_io_close(s, &hls->m3u8_out);
2693 ff_format_io_close(s, &hls->sub_m3u8_out);
2694 av_freep(&hls->key_basename);
2695 av_freep(&hls->var_streams);
2696 av_freep(&hls->cc_streams);
2697 av_freep(&hls->master_m3u8_url);
2700 static int hls_write_trailer(struct AVFormatContext *s)
2702 HLSContext *hls = s->priv_data;
2703 AVFormatContext *oc = NULL;
2704 AVFormatContext *vtt_oc = NULL;
2705 char *old_filename = NULL;
2706 const char *proto = NULL;
2707 int use_temp_file = 0;
2710 VariantStream *vs = NULL;
2711 AVDictionary *options = NULL;
2712 int range_length, byterange_mode;
2714 for (i = 0; i < hls->nb_varstreams; i++) {
2715 char *filename = NULL;
2716 vs = &hls->var_streams[i];
2718 vtt_oc = vs->vtt_avf;
2719 old_filename = av_strdup(oc->url);
2722 if (!old_filename) {
2723 return AVERROR(ENOMEM);
2725 if (hls->key_info_file || hls->encrypt) {
2726 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2727 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2728 filename = av_asprintf("crypto:%s", oc->url);
2730 filename = av_asprintf("%s", oc->url);
2733 av_freep(&old_filename);
2734 return AVERROR(ENOMEM);
2737 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2738 int range_length = 0;
2739 if (!vs->init_range_length) {
2740 uint8_t *buffer = NULL;
2741 av_write_frame(oc, NULL); /* Flush any buffered data */
2743 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2744 avio_write(vs->out, buffer, range_length);
2746 vs->init_range_length = range_length;
2747 avio_open_dyn_buf(&oc->pb);
2748 vs->packets_written = 0;
2749 vs->start_pos = range_length;
2750 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2751 if (!byterange_mode) {
2752 ff_format_io_close(s, &vs->out);
2753 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2757 if (!(hls->flags & HLS_SINGLE_FILE)) {
2758 set_http_options(s, &options, hls);
2759 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2761 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2764 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2765 write_styp(vs->out);
2767 ret = flush_dynbuf(vs, &range_length);
2771 vs->size = range_length;
2772 ret = hlsenc_io_close(s, &vs->out, filename);
2774 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2775 ff_format_io_close(s, &vs->out);
2776 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2778 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2781 reflush_dynbuf(vs, &range_length);
2782 ret = hlsenc_io_close(s, &vs->out, filename);
2784 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2786 if (hls->flags & HLS_SINGLE_FILE) {
2787 if (hls->key_info_file || hls->encrypt) {
2788 vs->size = append_single_file(s, vs);
2790 hlsenc_io_close(s, &vs->out_single_file, vs->basename);
2793 av_freep(&vs->temp_buffer);
2794 av_dict_free(&options);
2795 av_freep(&filename);
2796 av_write_trailer(oc);
2798 proto = avio_find_protocol_name(oc->url);
2799 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2802 // rename that segment from .tmp to the real one
2803 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2804 hls_rename_temp_file(s, oc);
2805 av_freep(&old_filename);
2806 old_filename = av_strdup(oc->url);
2808 if (!old_filename) {
2809 return AVERROR(ENOMEM);
2813 /* after av_write_trailer, then duration + 1 duration per packet */
2814 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2816 sls_flag_file_rename(hls, vs, old_filename);
2820 av_write_trailer(vtt_oc);
2821 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2822 ff_format_io_close(s, &vtt_oc->pb);
2824 ret = hls_window(s, 1, vs);
2826 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2827 ff_format_io_close(s, &vs->out);
2828 hls_window(s, 1, vs);
2830 ffio_free_dyn_buf(&oc->pb);
2832 av_free(old_filename);
2839 static int hls_init(AVFormatContext *s)
2844 HLSContext *hls = s->priv_data;
2845 const char *pattern;
2846 VariantStream *vs = NULL;
2847 const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2849 int http_base_proto = ff_is_http_proto(s->url);
2850 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2851 double initial_program_date_time = av_gettime() / 1000000.0;
2853 if (hls->use_localtime) {
2854 pattern = get_default_pattern_localtime_fmt(s);
2856 pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2857 if (hls->flags & HLS_SINGLE_FILE)
2861 hls->has_default_key = 0;
2862 hls->has_video_m3u8 = 0;
2863 ret = update_variant_stream_info(s);
2865 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2870 if (!hls->method && http_base_proto) {
2871 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2874 ret = validate_name(hls->nb_varstreams, s->url);
2878 if (hls->segment_filename) {
2879 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2884 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2885 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2890 if (hls->subtitle_filename) {
2891 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2896 if (hls->master_pl_name) {
2897 ret = update_master_pl_info(s);
2899 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2905 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2906 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2907 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2908 time_t t = time(NULL);
2909 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2910 hls->start_sequence = av_gettime();
2911 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2912 hls->start_sequence = (int64_t)t;
2913 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2915 struct tm *p, tmbuf;
2916 if (!(p = localtime_r(&t, &tmbuf)))
2917 return AVERROR(errno);
2918 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2919 return AVERROR(ENOMEM);
2920 hls->start_sequence = strtoll(b, NULL, 10);
2922 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2925 hls->recording_time = hls->init_time ? hls->init_time : hls->time;
2927 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2928 // Independent segments cannot be guaranteed when splitting by time
2929 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2930 av_log(s, AV_LOG_WARNING,
2931 "'split_by_time' and 'independent_segments' cannot be "
2932 "enabled together. Disabling 'independent_segments' flag\n");
2935 for (i = 0; i < hls->nb_varstreams; i++) {
2936 vs = &hls->var_streams[i];
2938 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2942 vs->sequence = hls->start_sequence;
2943 vs->start_pts = AV_NOPTS_VALUE;
2944 vs->end_pts = AV_NOPTS_VALUE;
2945 vs->current_segment_final_filename_fmt[0] = '\0';
2946 vs->initial_prog_date_time = initial_program_date_time;
2948 for (j = 0; j < vs->nb_streams; j++) {
2949 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2950 /* Get one video stream to reference for split segments
2951 * so use the first video stream index. */
2952 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2953 vs->reference_stream_index = vs->streams[j]->index;
2955 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2958 if (vs->has_video > 1)
2959 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2960 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2961 vs->oformat = av_guess_format("mp4", NULL, NULL);
2963 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2966 return AVERROR_MUXER_NOT_FOUND;
2968 if (hls->segment_filename) {
2969 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2973 p = strrchr(vs->m3u8_name, '.');
2977 vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
2979 return AVERROR(ENOMEM);
2985 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2986 if (hls->nb_varstreams > 1)
2987 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2988 if (hls->flags & HLS_SINGLE_FILE) {
2989 vs->fmp4_init_filename = av_strdup(vs->basename);
2990 if (!vs->fmp4_init_filename)
2991 return AVERROR(ENOMEM);
2993 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2994 if (!vs->fmp4_init_filename)
2995 return AVERROR(ENOMEM);
2996 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2997 fmp4_init_filename_len);
2998 if (hls->nb_varstreams > 1) {
2999 if (av_stristr(vs->fmp4_init_filename, "%v")) {
3000 av_freep(&vs->fmp4_init_filename);
3001 ret = format_name(hls->fmp4_init_filename,
3002 &vs->fmp4_init_filename, i, vs->varname);
3004 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
3010 if (hls->use_localtime) {
3012 char *expanded = NULL;
3014 r = strftime_expand(vs->fmp4_init_filename, &expanded);
3016 av_log(s, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
3019 av_free(vs->fmp4_init_filename);
3020 vs->fmp4_init_filename = expanded;
3023 p = strrchr(vs->m3u8_name, '/');
3027 vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
3028 vs->fmp4_init_filename);
3031 vs->base_output_dirname = av_strdup(vs->fmp4_init_filename);
3033 if (!vs->base_output_dirname)
3034 return AVERROR(ENOMEM);
3038 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
3042 if (vs->has_subtitle) {
3043 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
3044 if (!vs->vtt_oformat)
3045 return AVERROR_MUXER_NOT_FOUND;
3047 p = strrchr(vs->m3u8_name, '.');
3051 vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
3052 if (!vs->vtt_basename)
3053 return AVERROR(ENOMEM);
3055 if (hls->subtitle_filename) {
3056 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
3060 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
3061 if (!vs->vtt_m3u8_name)
3062 return AVERROR(ENOMEM);
3068 if ((ret = hls_mux_init(s, vs)) < 0)
3071 if (hls->flags & HLS_APPEND_LIST) {
3072 parse_playlist(s, vs->m3u8_name, vs);
3073 vs->discontinuity = 1;
3074 if (hls->init_time > 0) {
3075 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3076 " hls_init_time value will have no effect\n");
3078 hls->recording_time = hls->time;
3082 if ((ret = hls_start(s, vs)) < 0)
3090 #define OFFSET(x) offsetof(HLSContext, x)
3091 #define E AV_OPT_FLAG_ENCODING_PARAM
3092 static const AVOption options[] = {
3093 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3094 {"hls_time", "set segment length", OFFSET(time), AV_OPT_TYPE_DURATION, {.i64 = 2000000}, 0, INT64_MAX, E},
3095 {"hls_init_time", "set segment length at init list", OFFSET(init_time), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E},
3096 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3097 {"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},
3098 {"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},
3099 {"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},
3100 {"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},
3101 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3102 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3103 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3104 {"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},
3105 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3106 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3107 {"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},
3108 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3109 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3110 {"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"},
3111 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3112 {"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"},
3113 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3114 {"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 },
3115 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3116 {"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"},
3117 {"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"},
3118 {"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"},
3119 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3120 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3121 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3122 {"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"},
3123 {"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"},
3124 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3125 {"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"},
3126 {"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"},
3127 {"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"},
3128 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3129 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3130 {"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"},
3131 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3132 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3133 {"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" },
3134 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3135 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3136 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3137 {"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" },
3138 {"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" },
3139 {"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" },
3140 {"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" },
3141 {"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" },
3142 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3143 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3144 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3145 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3146 {"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},
3147 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3148 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3149 {"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 },
3150 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3154 static const AVClass hls_class = {
3155 .class_name = "hls muxer",
3156 .item_name = av_default_item_name,
3158 .version = LIBAVUTIL_VERSION_INT,
3162 AVOutputFormat ff_hls_muxer = {
3164 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3165 .extensions = "m3u8",
3166 .priv_data_size = sizeof(HLSContext),
3167 .audio_codec = AV_CODEC_ID_AAC,
3168 .video_codec = AV_CODEC_ID_H264,
3169 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3170 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3172 .write_header = hls_write_header,
3173 .write_packet = hls_write_packet,
3174 .write_trailer = hls_write_trailer,
3175 .deinit = hls_deinit,
3176 .priv_class = &hls_class,