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;
93 typedef enum HLSFlags {
94 // Generate a single media file and use byte ranges in the playlist.
95 HLS_SINGLE_FILE = (1 << 0),
96 HLS_DELETE_SEGMENTS = (1 << 1),
97 HLS_ROUND_DURATIONS = (1 << 2),
98 HLS_DISCONT_START = (1 << 3),
99 HLS_OMIT_ENDLIST = (1 << 4),
100 HLS_SPLIT_BY_TIME = (1 << 5),
101 HLS_APPEND_LIST = (1 << 6),
102 HLS_PROGRAM_DATE_TIME = (1 << 7),
103 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
104 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
105 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
106 HLS_TEMP_FILE = (1 << 11),
107 HLS_PERIODIC_REKEY = (1 << 12),
108 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
109 HLS_I_FRAMES_ONLY = (1 << 14),
117 typedef struct VariantStream {
118 unsigned var_stream_idx;
121 ff_const59 AVOutputFormat *oformat;
122 ff_const59 AVOutputFormat *vtt_oformat;
124 AVIOContext *out_single_file;
126 int init_range_length;
127 uint8_t *temp_buffer;
128 uint8_t *init_buffer;
130 AVFormatContext *avf;
131 AVFormatContext *vtt_avf;
136 int start_pts_from_audio;
137 double dpp; // duration per packet
140 int64_t video_lastpos;
141 int64_t video_keyframe_pos;
142 int64_t video_keyframe_size;
143 double duration; // last segment duration computed so far, in seconds
144 int64_t start_pos; // last segment starting position
145 int64_t size; // last segment size
147 int discontinuity_set;
149 int reference_stream_index;
151 HLSSegment *segments;
152 HLSSegment *last_segment;
153 HLSSegment *old_segments;
161 double initial_prog_date_time;
162 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
164 char *fmp4_init_filename;
165 char *base_output_dirname;
169 char key_file[LINE_BUFFER_SIZE + 1];
170 char key_uri[LINE_BUFFER_SIZE + 1];
171 char key_string[KEYSIZE*2 + 1];
172 char iv_string[KEYSIZE*2 + 1];
175 char codec_attr[128];
176 CodecAttributeStatus attr_status;
177 unsigned int nb_streams;
178 int m3u8_created; /* status of media play-list creation */
179 int is_default; /* default status of audio group */
180 const char *language; /* audio lauguage name */
181 const char *agroup; /* audio group name */
182 const char *sgroup; /* subtitle group name */
183 const char *ccgroup; /* closed caption group name */
184 const char *varname; /* variant name */
187 typedef struct ClosedCaptionsStream {
188 const char *ccgroup; /* closed caption group name */
189 const char *instreamid; /* closed captions INSTREAM-ID */
190 const char *language; /* closed captions langauge */
191 } ClosedCaptionsStream;
193 typedef struct HLSContext {
194 const AVClass *class; // Class for private options.
195 int64_t start_sequence;
196 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
198 float time; // Set by a private option.
199 float init_time; // Set by a private option.
200 int max_nb_segments; // Set by a private option.
201 int hls_delete_threshold; // Set by a private option.
203 int wrap; // Set by a private option.
205 uint32_t flags; // enum HLSFlags
206 uint32_t pl_type; // enum PlaylistType
207 char *segment_filename;
208 char *fmp4_init_filename;
210 int resend_init_file; ///< resend init file into disk after refresh m3u8
212 int use_localtime; ///< flag to expand filename with localtime
213 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
215 int64_t recording_time;
216 int64_t max_seg_size; // every segment file max size
219 char *vtt_format_options_str;
220 char *subtitle_filename;
221 AVDictionary *format_options;
231 char key_file[LINE_BUFFER_SIZE + 1];
232 char key_uri[LINE_BUFFER_SIZE + 1];
233 char key_string[KEYSIZE*2 + 1];
234 char iv_string[KEYSIZE*2 + 1];
235 AVDictionary *vtt_format_options;
240 VariantStream *var_streams;
241 unsigned int nb_varstreams;
242 ClosedCaptionsStream *cc_streams;
243 unsigned int nb_ccstreams;
245 int master_m3u8_created; /* status of master play-list creation */
246 char *master_m3u8_url; /* URL of the master m3u8 file */
247 int version; /* HLS version */
248 char *var_stream_map; /* user specified variant stream map string */
249 char *cc_stream_map; /* user specified closed caption streams map string */
250 char *master_pl_name;
251 unsigned int master_publish_rate;
253 AVIOContext *m3u8_out;
254 AVIOContext *sub_m3u8_out;
256 int ignore_io_errors;
258 int has_default_key; /* has DEFAULT field of var_stream_map */
259 int has_video_m3u8; /* has video stream m3u8 list */
262 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
263 AVDictionary **options)
265 HLSContext *hls = s->priv_data;
266 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
267 int err = AVERROR_MUXER_NOT_FOUND;
268 if (!*pb || !http_base_proto || !hls->http_persistent) {
269 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
270 #if CONFIG_HTTP_PROTOCOL
272 URLContext *http_url_context = ffio_geturlcontext(*pb);
273 av_assert0(http_url_context);
274 err = ff_http_do_new_request(http_url_context, filename);
276 ff_format_io_close(s, pb);
283 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
285 HLSContext *hls = s->priv_data;
286 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
290 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
291 ff_format_io_close(s, pb);
292 #if CONFIG_HTTP_PROTOCOL
294 URLContext *http_url_context = ffio_geturlcontext(*pb);
295 av_assert0(http_url_context);
297 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
298 ret = ff_http_get_shutdown_status(http_url_context);
304 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
306 int http_base_proto = ff_is_http_proto(s->url);
309 av_dict_set(options, "method", c->method, 0);
310 } else if (http_base_proto) {
311 av_dict_set(options, "method", "PUT", 0);
314 av_dict_set(options, "user_agent", c->user_agent, 0);
315 if (c->http_persistent)
316 av_dict_set_int(options, "multiple_requests", 1, 0);
318 av_dict_set_int(options, "timeout", c->timeout, 0);
320 av_dict_set(options, "headers", c->headers, 0);
323 static void write_codec_attr(AVStream *st, VariantStream *vs)
325 int codec_strlen = strlen(vs->codec_attr);
328 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
330 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
333 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
334 uint8_t *data = st->codecpar->extradata;
335 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
336 snprintf(attr, sizeof(attr),
337 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
341 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
342 uint8_t *data = st->codecpar->extradata;
343 int profile = FF_PROFILE_UNKNOWN;
344 int level = FF_LEVEL_UNKNOWN;
346 if (st->codecpar->profile != FF_PROFILE_UNKNOWN)
347 profile = st->codecpar->profile;
348 if (st->codecpar->level != FF_LEVEL_UNKNOWN)
349 level = st->codecpar->level;
351 /* check the boundary of data which from current position is small than extradata_size */
352 while (data && (data - st->codecpar->extradata + 19) < st->codecpar->extradata_size) {
353 /* get HEVC SPS NAL and seek to profile_tier_level */
354 if (!(data[0] | data[1] | data[2]) && data[3] == 1 && ((data[4] & 0x42) == 0x42)) {
357 /* skip start code + nalu header */
359 /* process by reference General NAL unit syntax */
360 remain_size = st->codecpar->extradata_size - (data - st->codecpar->extradata);
361 uint8_t *rbsp_buf = ff_nal_unit_extract_rbsp(data, remain_size, &rbsp_size, 0);
364 if (rbsp_size < 13) {
368 /* skip sps_video_parameter_set_id u(4),
369 * sps_max_sub_layers_minus1 u(3),
370 * and sps_temporal_id_nesting_flag u(1) */
371 profile = rbsp_buf[1] & 0x1f;
372 /* skip 8 + 8 + 32 + 4 + 43 + 1 bit */
373 level = rbsp_buf[12];
379 if (st->codecpar->codec_tag == MKTAG('h','v','c','1') &&
380 profile != FF_PROFILE_UNKNOWN &&
381 level != FF_LEVEL_UNKNOWN) {
382 snprintf(attr, sizeof(attr), "%s.%d.4.L%d.B01", av_fourcc2str(st->codecpar->codec_tag), profile, level);
385 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
386 snprintf(attr, sizeof(attr), "mp4a.40.33");
387 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
388 snprintf(attr, sizeof(attr), "mp4a.40.34");
389 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
390 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
391 snprintf(attr, sizeof(attr), "mp4a.40.2");
392 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
393 snprintf(attr, sizeof(attr), "ac-3");
394 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
395 snprintf(attr, sizeof(attr), "ec-3");
399 // Don't write the same attribute multiple times
400 if (!av_stristr(vs->codec_attr, attr)) {
401 snprintf(vs->codec_attr + codec_strlen,
402 sizeof(vs->codec_attr) - codec_strlen,
403 "%s%s", codec_strlen ? "," : "", attr);
408 vs->codec_attr[0] = '\0';
409 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
413 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
422 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
429 if (c == '%' && *(p+1) == '%') // %%
431 else if (c == '%' && *(p+1) == placeholder) {
432 av_bprintf(&buf, "%s", datastring);
439 if (addchar_count > 0) {
440 av_bprint_append_data(&buf, p, addchar_count);
444 if (!av_bprint_is_complete(&buf)) {
445 av_bprint_finalize(&buf, NULL);
446 return AVERROR(ENOMEM);
448 if ((ret = av_bprint_finalize(&buf, s)) < 0)
453 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
457 int nd, addchar_count;
462 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
469 if (c == '%' && *(p+1) == '%') // %%
471 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
474 while (av_isdigit(*(p + addchar_count))) {
475 nd = nd * 10 + *(p + addchar_count) - '0';
479 if (*(p + addchar_count) == placeholder) {
480 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
481 p += (addchar_count + 1);
489 av_bprint_append_data(&buf, p, addchar_count);
492 if (!av_bprint_is_complete(&buf)) {
493 av_bprint_finalize(&buf, NULL);
494 return AVERROR(ENOMEM);
496 if ((ret = av_bprint_finalize(&buf, s)) < 0)
501 static void write_styp(AVIOContext *pb)
504 ffio_wfourcc(pb, "styp");
505 ffio_wfourcc(pb, "msdh");
506 avio_wb32(pb, 0); /* minor */
507 ffio_wfourcc(pb, "msdh");
508 ffio_wfourcc(pb, "msix");
511 static int flush_dynbuf(VariantStream *vs, int *range_length)
513 AVFormatContext *ctx = vs->avf;
516 return AVERROR(EINVAL);
520 av_write_frame(ctx, NULL);
523 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
525 avio_write(vs->out, vs->temp_buffer, *range_length);
529 return avio_open_dyn_buf(&ctx->pb);
532 static void reflush_dynbuf(VariantStream *vs, int *range_length)
535 avio_write(vs->out, vs->temp_buffer, *range_length);
539 #define SEPARATOR '\\'
541 #define SEPARATOR '/'
544 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
545 const char *path, const char *proto)
547 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
548 AVDictionary *opt = NULL;
549 AVIOContext *out = NULL;
551 av_dict_set(&opt, "method", "DELETE", 0);
552 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
555 return hls->ignore_io_errors ? 1 : ret;
556 ff_format_io_close(avf, &out);
557 } else if (unlink(path) < 0) {
558 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
559 path, strerror(errno));
564 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
568 HLSSegment *segment, *previous_segment = NULL;
569 float playlist_duration = 0.0f;
573 const char *dirname = NULL;
574 char *dirname_r = NULL;
575 char *dirname_repl = NULL;
576 const char *vtt_dirname = NULL;
577 char *vtt_dirname_r = NULL;
578 const char *proto = NULL;
580 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
582 segment = vs->segments;
584 playlist_duration += segment->duration;
585 segment = segment->next;
588 segment = vs->old_segments;
591 playlist_duration -= segment->duration;
592 previous_segment = segment;
593 segment = previous_segment->next;
595 if (playlist_duration <= -previous_segment->duration) {
596 previous_segment->next = NULL;
599 if (segment_cnt >= hls->hls_delete_threshold) {
600 previous_segment->next = NULL;
605 if (segment && !hls->use_localtime_mkdir) {
606 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
607 dirname = av_dirname(dirname_r);
610 /* if %v is present in the file's directory
611 * all segment belongs to the same variant, so do it only once before the loop*/
612 if (dirname && av_stristr(dirname, "%v")) {
614 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
615 ret = AVERROR(EINVAL);
619 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
620 ret = AVERROR(EINVAL);
625 dirname = dirname_repl;
629 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
631 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
632 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
633 av_bprintf(&path, "%s", segment->filename);
635 if (!av_bprint_is_complete(&path)) {
636 ret = AVERROR(ENOMEM);
640 proto = avio_find_protocol_name(s->url);
641 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
644 if ((segment->sub_filename[0] != '\0')) {
645 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
646 vtt_dirname = av_dirname(vtt_dirname_r);
648 av_bprint_clear(&path);
649 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
650 segment->sub_filename);
651 av_freep(&vtt_dirname_r);
653 if (!av_bprint_is_complete(&path)) {
654 ret = AVERROR(ENOMEM);
658 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
661 av_bprint_clear(&path);
662 previous_segment = segment;
663 segment = previous_segment->next;
664 av_freep(&previous_segment);
668 av_bprint_finalize(&path, NULL);
669 av_freep(&dirname_r);
670 av_freep(&dirname_repl);
675 static int randomize(uint8_t *buf, int len)
678 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
681 if (RAND_bytes(buf, len))
684 return AVERROR(ENOSYS);
686 return AVERROR(EINVAL);
689 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
691 HLSContext *hls = s->priv_data;
695 uint8_t key[KEYSIZE];
696 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
698 len = strlen(key_basename_source) + 4 + 1;
699 hls->key_basename = av_mallocz(len);
700 if (!hls->key_basename)
701 return AVERROR(ENOMEM);
703 av_strlcpy(hls->key_basename, key_basename_source, len);
704 av_strlcat(hls->key_basename, ".key", len);
707 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
708 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
710 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
711 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
714 if (!*hls->iv_string) {
715 uint8_t iv[16] = { 0 };
719 AV_WB64(iv + 8, vs->sequence);
721 memcpy(iv, hls->iv, sizeof(iv));
723 ff_data_to_hex(buf, iv, sizeof(iv), 0);
725 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
728 if (!*hls->key_uri) {
729 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
730 return AVERROR(EINVAL);
733 if (!*hls->key_file) {
734 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
735 return AVERROR(EINVAL);
738 if (!*hls->key_string) {
739 AVDictionary *options = NULL;
741 if ((ret = randomize(key, sizeof(key))) < 0) {
742 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
746 memcpy(key, hls->key, sizeof(key));
749 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
750 set_http_options(s, &options, hls);
751 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
752 av_dict_free(&options);
755 avio_seek(pb, 0, SEEK_CUR);
756 avio_write(pb, key, KEYSIZE);
763 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
765 HLSContext *hls = s->priv_data;
768 uint8_t key[KEYSIZE];
769 AVDictionary *options = NULL;
771 set_http_options(s, &options, hls);
772 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
773 av_dict_free(&options);
775 av_log(hls, AV_LOG_ERROR,
776 "error opening key info file %s\n", hls->key_info_file);
780 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
781 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
783 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
784 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
786 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
787 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
789 ff_format_io_close(s, &pb);
792 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
793 return AVERROR(EINVAL);
796 if (!*vs->key_file) {
797 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
798 return AVERROR(EINVAL);
801 set_http_options(s, &options, hls);
802 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
803 av_dict_free(&options);
805 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
809 ret = avio_read(pb, key, sizeof(key));
810 ff_format_io_close(s, &pb);
811 if (ret != sizeof(key)) {
812 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
813 if (ret >= 0 || ret == AVERROR_EOF)
814 ret = AVERROR(EINVAL);
817 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
822 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
824 AVDictionary *options = NULL;
825 HLSContext *hls = s->priv_data;
827 AVFormatContext *vtt_oc = NULL;
828 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
829 int remaining_options;
832 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
837 oc->url = av_strdup("");
839 return AVERROR(ENOMEM);
841 oc->interrupt_callback = s->interrupt_callback;
842 oc->max_delay = s->max_delay;
843 oc->opaque = s->opaque;
844 oc->io_open = s->io_open;
845 oc->io_close = s->io_close;
846 oc->strict_std_compliance = s->strict_std_compliance;
847 av_dict_copy(&oc->metadata, s->metadata, 0);
849 if (vs->vtt_oformat) {
850 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
853 vtt_oc = vs->vtt_avf;
854 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
857 for (i = 0; i < vs->nb_streams; i++) {
859 AVFormatContext *loc;
860 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
865 if (!(st = avformat_new_stream(loc, NULL)))
866 return AVERROR(ENOMEM);
867 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
868 if (!oc->oformat->codec_tag ||
869 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
870 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
871 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
873 st->codecpar->codec_tag = 0;
876 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
877 st->time_base = vs->streams[i]->time_base;
878 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
884 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
885 if (hls->http_persistent > 0) {
886 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
887 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
889 if (hls->max_seg_size > 0) {
890 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
891 return AVERROR_PATCHWELCOME;
895 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
898 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
899 set_http_options(s, &options, hls);
900 if (byterange_mode) {
901 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
903 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
905 av_dict_free(&options);
908 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
912 av_dict_copy(&options, hls->format_options, 0);
913 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
914 av_dict_set(&options, "fflags", "-autobsf", 0);
915 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
917 /* We only require one PAT/PMT per segment. */
919 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
920 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
921 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
923 ret = avformat_init_output(oc, &options);
924 remaining_options = av_dict_count(options);
925 av_dict_free(&options);
928 if (remaining_options) {
929 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
930 return AVERROR(EINVAL);
936 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
939 if (!av_strcasecmp(segment->filename,filename))
941 segment = segment->next;
943 return (HLSSegment *) NULL;
946 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
947 VariantStream *vs, HLSSegment *en,
948 double duration, int64_t pos, int64_t size)
950 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
951 strlen(vs->current_segment_final_filename_fmt)) {
952 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
954 return AVERROR(ENOMEM);
956 ff_format_set_url(vs->avf, new_url);
957 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
958 char *filename = NULL;
959 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
960 av_log(hls, AV_LOG_ERROR,
961 "Invalid second level segment filename template '%s', "
962 "you can try to remove second_level_segment_size flag\n",
965 return AVERROR(EINVAL);
967 ff_format_set_url(vs->avf, filename);
969 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
970 char *filename = NULL;
971 if (replace_int_data_in_filename(&filename, vs->avf->url,
972 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
973 av_log(hls, AV_LOG_ERROR,
974 "Invalid second level segment filename template '%s', "
975 "you can try to remove second_level_segment_time flag\n",
978 return AVERROR(EINVAL);
980 ff_format_set_url(vs->avf, filename);
986 static int sls_flag_check_duration_size_index(HLSContext *hls)
990 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
991 av_log(hls, AV_LOG_ERROR,
992 "second_level_segment_duration hls_flag requires strftime to be true\n");
993 ret = AVERROR(EINVAL);
995 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
996 av_log(hls, AV_LOG_ERROR,
997 "second_level_segment_size hls_flag requires strfime to be true\n");
998 ret = AVERROR(EINVAL);
1000 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1001 av_log(hls, AV_LOG_ERROR,
1002 "second_level_segment_index hls_flag requires strftime to be true\n");
1003 ret = AVERROR(EINVAL);
1009 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
1011 const char *proto = avio_find_protocol_name(vs->basename);
1012 int segment_renaming_ok = proto && !strcmp(proto, "file");
1015 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1016 av_log(hls, AV_LOG_ERROR,
1017 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1018 ret = AVERROR(EINVAL);
1020 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1021 av_log(hls, AV_LOG_ERROR,
1022 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1023 ret = AVERROR(EINVAL);
1029 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
1030 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1031 strlen(vs->current_segment_final_filename_fmt)) {
1032 ff_rename(old_filename, vs->avf->url, hls);
1036 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
1038 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1039 char *filename = NULL;
1040 if (replace_int_data_in_filename(&filename,
1042 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1044 oc->url, 'd', vs->sequence) < 1) {
1046 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1047 "you can try to remove second_level_segment_index flag\n",
1049 av_freep(&filename);
1050 return AVERROR(EINVAL);
1052 ff_format_set_url(oc, filename);
1054 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1055 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1056 sizeof(vs->current_segment_final_filename_fmt));
1057 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1058 char *filename = NULL;
1059 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1060 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1061 "you can try to remove second_level_segment_size flag\n",
1063 av_freep(&filename);
1064 return AVERROR(EINVAL);
1066 ff_format_set_url(oc, filename);
1068 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1069 char *filename = NULL;
1070 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1071 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1072 "you can try to remove second_level_segment_time flag\n",
1074 av_freep(&filename);
1075 return AVERROR(EINVAL);
1077 ff_format_set_url(oc, filename);
1083 /* Create a new segment and append it to the segment list */
1084 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1085 VariantStream *vs, double duration, int64_t pos,
1088 HLSSegment *en = av_malloc(sizeof(*en));
1089 const char *filename;
1090 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1094 return AVERROR(ENOMEM);
1096 en->var_stream_idx = vs->var_stream_idx;
1097 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1103 filename = av_basename(vs->avf->url);
1105 if (hls->use_localtime_mkdir) {
1106 filename = vs->avf->url;
1108 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1109 && !byterange_mode) {
1110 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1112 av_strlcpy(en->filename, filename, sizeof(en->filename));
1114 if (vs->has_subtitle)
1115 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1117 en->sub_filename[0] = '\0';
1119 en->duration = duration;
1122 en->keyframe_pos = vs->video_keyframe_pos;
1123 en->keyframe_size = vs->video_keyframe_size;
1127 if (vs->discontinuity) {
1129 vs->discontinuity = 0;
1132 if (hls->key_info_file || hls->encrypt) {
1133 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1134 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1140 vs->last_segment->next = en;
1142 vs->last_segment = en;
1144 // EVENT or VOD playlists imply sliding window cannot be used
1145 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1146 hls->max_nb_segments = 0;
1148 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1150 vs->initial_prog_date_time += en->duration;
1151 vs->segments = en->next;
1152 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1154 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1156 !(hls->flags & HLS_SINGLE_FILE)) {
1158 en->next = vs->old_segments;
1159 vs->old_segments = en;
1160 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1167 if (hls->max_seg_size > 0) {
1175 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1177 HLSContext *hls = s->priv_data;
1179 int ret = 0, is_segment = 0;
1180 int64_t new_start_pos;
1181 char line[MAX_URL_SIZE];
1185 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1186 &s->interrupt_callback, NULL,
1187 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1190 ff_get_chomp_line(in, line, sizeof(line));
1191 if (strcmp(line, "#EXTM3U")) {
1192 ret = AVERROR_INVALIDDATA;
1196 vs->discontinuity = 0;
1197 while (!avio_feof(in)) {
1198 ff_get_chomp_line(in, line, sizeof(line));
1199 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1200 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1201 if (tmp_sequence < vs->sequence)
1202 av_log(hls, AV_LOG_VERBOSE,
1203 "Found playlist sequence number was smaller """
1204 "than specified start sequence number: %"PRId64" < %"PRId64", "
1205 "omitting\n", tmp_sequence, hls->start_sequence);
1207 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1208 vs->sequence = tmp_sequence;
1210 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1212 vs->discontinuity = 1;
1213 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1215 vs->duration = atof(ptr);
1216 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1217 ptr = av_stristr(line, "URI=\"");
1219 ptr += strlen("URI=\"");
1220 end = av_stristr(ptr, ",");
1222 av_strlcpy(vs->key_uri, ptr, end - ptr);
1224 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1228 ptr = av_stristr(line, "IV=0x");
1230 ptr += strlen("IV=0x");
1231 end = av_stristr(ptr, ",");
1233 av_strlcpy(vs->iv_string, ptr, end - ptr);
1235 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1239 } else if (av_strstart(line, "#", NULL)) {
1241 } else if (line[0]) {
1243 char *new_file = av_strdup(line);
1245 ret = AVERROR(ENOMEM);
1248 ff_format_set_url(vs->avf, new_file);
1250 new_start_pos = avio_tell(vs->avf->pb);
1251 vs->size = new_start_pos - vs->start_pos;
1252 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1253 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1256 vs->start_pos = new_start_pos;
1266 static void hls_free_segments(HLSSegment *p)
1277 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1279 size_t len = strlen(oc->url);
1280 char *final_filename = av_strdup(oc->url);
1283 if (!final_filename)
1284 return AVERROR(ENOMEM);
1285 final_filename[len-4] = '\0';
1286 ret = ff_rename(oc->url, final_filename, s);
1287 oc->url[len-4] = '\0';
1288 av_freep(&final_filename);
1292 static const char* get_relative_url(const char *master_url, const char *media_url)
1294 const char *p = strrchr(master_url, '/');
1295 size_t base_len = 0;
1297 if (!p) p = strrchr(master_url, '\\');
1300 base_len = p - master_url;
1301 if (av_strncasecmp(master_url, media_url, base_len)) {
1302 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1309 return media_url + base_len + 1;
1312 static int64_t get_stream_bit_rate(AVStream *stream)
1314 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1316 AV_PKT_DATA_CPB_PROPERTIES,
1320 if (stream->codecpar->bit_rate)
1321 return stream->codecpar->bit_rate;
1323 return props->max_bitrate;
1328 static int create_master_playlist(AVFormatContext *s,
1329 VariantStream * const input_vs)
1331 HLSContext *hls = s->priv_data;
1332 VariantStream *vs, *temp_vs;
1333 AVStream *vid_st, *aud_st;
1334 AVDictionary *options = NULL;
1337 const char *m3u8_rel_name = NULL;
1338 const char *vtt_m3u8_rel_name = NULL;
1339 const char *ccgroup;
1340 const char *sgroup = NULL;
1341 ClosedCaptionsStream *ccs;
1342 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1343 int is_file_proto = proto && !strcmp(proto, "file");
1344 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1345 char temp_filename[MAX_URL_SIZE];
1347 input_vs->m3u8_created = 1;
1348 if (!hls->master_m3u8_created) {
1349 /* For the first time, wait until all the media playlists are created */
1350 for (i = 0; i < hls->nb_varstreams; i++)
1351 if (!hls->var_streams[i].m3u8_created)
1354 /* Keep publishing the master playlist at the configured rate */
1355 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1356 input_vs->number % hls->master_publish_rate)
1360 set_http_options(s, &options, hls);
1361 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1362 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1363 av_dict_free(&options);
1365 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1370 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1372 for (i = 0; i < hls->nb_ccstreams; i++) {
1373 ccs = &(hls->cc_streams[i]);
1374 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1375 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1376 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1378 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1379 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1382 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1383 for (i = 0; i < hls->nb_varstreams; i++) {
1384 vs = &(hls->var_streams[i]);
1386 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1389 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1390 if (!m3u8_rel_name) {
1391 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1395 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1398 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1399 for (i = 0; i < hls->nb_varstreams; i++) {
1400 vs = &(hls->var_streams[i]);
1402 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1403 if (!m3u8_rel_name) {
1404 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1410 for (j = 0; j < vs->nb_streams; j++) {
1411 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1412 vid_st = vs->streams[j];
1413 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1414 aud_st = vs->streams[j];
1417 if (!vid_st && !aud_st) {
1418 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1423 * Traverse through the list of audio only rendition streams and find
1424 * the rendition which has highest bitrate in the same audio group
1427 for (j = 0; j < hls->nb_varstreams; j++) {
1428 temp_vs = &(hls->var_streams[j]);
1429 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1431 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1433 aud_st = temp_vs->streams[0];
1434 if (temp_vs->streams[0]->codecpar->bit_rate >
1435 aud_st->codecpar->bit_rate)
1436 aud_st = temp_vs->streams[0];
1443 bandwidth += get_stream_bit_rate(vid_st);
1445 bandwidth += get_stream_bit_rate(aud_st);
1446 bandwidth += bandwidth / 10;
1449 if (vid_st && vs->ccgroup) {
1450 /* check if this group name is available in the cc map string */
1451 for (j = 0; j < hls->nb_ccstreams; j++) {
1452 ccs = &(hls->cc_streams[j]);
1453 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1454 ccgroup = vs->ccgroup;
1458 if (j == hls->nb_ccstreams)
1459 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1463 if (vid_st && vs->sgroup) {
1464 sgroup = vs->sgroup;
1465 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1466 if (!vtt_m3u8_rel_name) {
1467 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1471 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1474 if (!hls->has_default_key || !hls->has_video_m3u8) {
1475 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1476 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1479 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1480 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1486 hls->master_m3u8_created = 1;
1487 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1489 ff_rename(temp_filename, hls->master_m3u8_url, s);
1494 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1496 HLSContext *hls = s->priv_data;
1498 int target_duration = 0;
1500 char temp_filename[MAX_URL_SIZE];
1501 char temp_vtt_filename[MAX_URL_SIZE];
1502 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1503 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1504 int is_file_proto = proto && !strcmp(proto, "file");
1505 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1506 static unsigned warned_non_file;
1507 char *key_uri = NULL;
1508 char *iv_string = NULL;
1509 AVDictionary *options = NULL;
1510 double prog_date_time = vs->initial_prog_date_time;
1511 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1512 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1515 if (byterange_mode) {
1520 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1524 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1528 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1529 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1531 set_http_options(s, &options, hls);
1532 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1533 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1534 if (hls->ignore_io_errors)
1539 for (en = vs->segments; en; en = en->next) {
1540 if (target_duration <= en->duration)
1541 target_duration = lrint(en->duration);
1544 vs->discontinuity_set = 0;
1545 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1546 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1548 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1549 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1550 vs->discontinuity_set = 1;
1552 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1553 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1555 for (en = vs->segments; en; en = en->next) {
1556 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1557 av_strcasecmp(en->iv_string, iv_string))) {
1558 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1560 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1561 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1562 key_uri = en->key_uri;
1563 iv_string = en->iv_string;
1566 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1567 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1568 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1571 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1572 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1573 en->size, en->pos, hls->baseurl,
1574 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1576 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1580 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1581 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1583 if (vs->vtt_m3u8_name) {
1584 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1585 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1586 if (hls->ignore_io_errors)
1590 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1591 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1592 for (en = vs->segments; en; en = en->next) {
1593 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1594 en->duration, 0, en->size, en->pos,
1595 hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1597 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1602 ff_hls_write_end_list(hls->sub_m3u8_out);
1607 av_dict_free(&options);
1608 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1612 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1613 if (use_temp_file) {
1614 ff_rename(temp_filename, vs->m3u8_name, s);
1615 if (vs->vtt_m3u8_name)
1616 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1618 if (ret >= 0 && hls->master_pl_name)
1619 if (create_master_playlist(s, vs) < 0)
1620 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1625 static int hls_start(AVFormatContext *s, VariantStream *vs)
1627 HLSContext *c = s->priv_data;
1628 AVFormatContext *oc = vs->avf;
1629 AVFormatContext *vtt_oc = vs->vtt_avf;
1630 AVDictionary *options = NULL;
1631 const char *proto = NULL;
1632 int use_temp_file = 0;
1633 char iv_string[KEYSIZE*2 + 1];
1636 if (c->flags & HLS_SINGLE_FILE) {
1637 char *new_name = av_strdup(vs->basename);
1639 return AVERROR(ENOMEM);
1640 ff_format_set_url(oc, new_name);
1641 if (vs->vtt_basename) {
1642 new_name = av_strdup(vs->vtt_basename);
1644 return AVERROR(ENOMEM);
1645 ff_format_set_url(vtt_oc, new_name);
1647 } else if (c->max_seg_size > 0) {
1648 char *filename = NULL;
1649 if (replace_int_data_in_filename(&filename,
1651 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1653 vs->basename, 'd', vs->sequence) < 1) {
1655 av_freep(&filename);
1656 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1657 return AVERROR(EINVAL);
1659 ff_format_set_url(oc, filename);
1661 if (c->use_localtime) {
1663 struct tm *tm, tmpbuf;
1664 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1665 char *buf = av_mallocz(bufsize);
1667 return AVERROR(ENOMEM);
1669 tm = localtime_r(&now0, &tmpbuf);
1670 ff_format_set_url(oc, buf);
1671 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1672 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1673 return AVERROR(EINVAL);
1676 err = sls_flag_use_localtime_filename(oc, c, vs);
1678 return AVERROR(ENOMEM);
1681 if (c->use_localtime_mkdir) {
1683 char *fn_copy = av_strdup(oc->url);
1685 return AVERROR(ENOMEM);
1686 dir = av_dirname(fn_copy);
1687 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1688 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1690 return AVERROR(errno);
1695 char *filename = NULL;
1696 if (replace_int_data_in_filename(&filename,
1698 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1700 vs->basename, 'd', vs->sequence) < 1) {
1702 av_freep(&filename);
1703 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1704 return AVERROR(EINVAL);
1706 ff_format_set_url(oc, filename);
1708 if (vs->vtt_basename) {
1709 char *filename = NULL;
1710 if (replace_int_data_in_filename(&filename,
1712 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1714 vs->vtt_basename, 'd', vs->sequence) < 1) {
1716 av_freep(&filename);
1717 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1718 return AVERROR(EINVAL);
1720 ff_format_set_url(vtt_oc, filename);
1724 proto = avio_find_protocol_name(oc->url);
1725 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1727 if (use_temp_file) {
1728 char *new_name = av_asprintf("%s.tmp", oc->url);
1730 return AVERROR(ENOMEM);
1731 ff_format_set_url(oc, new_name);
1734 if (c->key_info_file || c->encrypt) {
1735 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1736 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1737 return AVERROR_PATCHWELCOME;
1740 if (c->key_info_file && c->encrypt) {
1741 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1742 " ignoring -hls_enc\n");
1745 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1746 if (c->key_info_file) {
1747 if ((err = hls_encryption_start(s, vs)) < 0)
1750 if (!c->encrypt_started) {
1751 if ((err = do_encrypt(s, vs)) < 0)
1753 c->encrypt_started = 1;
1755 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1756 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1757 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1759 vs->encrypt_started = 1;
1761 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1763 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1764 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1765 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1768 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1769 if (oc->oformat->priv_class && oc->priv_data) {
1770 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1772 if (c->flags & HLS_SINGLE_FILE) {
1773 if (c->key_info_file || c->encrypt) {
1774 av_dict_set(&options, "encryption_key", vs->key_string, 0);
1775 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
1777 /* Write temp file with cryption content */
1778 av_freep(&vs->basename_tmp);
1779 vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
1781 /* append temp file content into single file */
1782 av_freep(&vs->basename);
1783 vs->basename = av_asprintf("%s", oc->url);
1785 vs->basename_tmp = vs->basename;
1787 set_http_options(s, &options, c);
1788 if (!vs->out_single_file)
1789 if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
1790 if (c->ignore_io_errors)
1795 if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
1796 if (c->ignore_io_errors)
1803 if (vs->vtt_basename) {
1804 set_http_options(s, &options, c);
1805 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1806 if (c->ignore_io_errors)
1811 av_dict_free(&options);
1813 if (vs->vtt_basename) {
1814 err = avformat_write_header(vtt_oc,NULL);
1821 av_dict_free(&options);
1826 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1829 time_t t = time(NULL);
1830 struct tm *p, tmbuf;
1831 HLSContext *hls = s->priv_data;
1833 p = localtime_r(&t, &tmbuf);
1834 // no %s support when strftime returned error or left format string unchanged
1835 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1836 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1837 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1839 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1842 static int append_postfix(char *name, int name_buf_len, int i)
1845 char extension[10] = {'\0'};
1847 p = strrchr(name, '.');
1849 av_strlcpy(extension, p, sizeof(extension));
1853 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1855 if (strlen(extension))
1856 av_strlcat(name, extension, name_buf_len);
1861 static int validate_name(int nb_vs, const char *fn)
1863 const char *filename, *subdir_name;
1864 char *fn_dup = NULL;
1868 return AVERROR(EINVAL);
1870 fn_dup = av_strdup(fn);
1872 return AVERROR(ENOMEM);
1873 filename = av_basename(fn);
1874 subdir_name = av_dirname(fn_dup);
1876 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1877 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1878 "either in the filename or in the sub-directory name of file %s\n", fn);
1879 ret = AVERROR(EINVAL);
1883 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1884 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1885 "in the sub-directory name of file %s, but only in one of them\n", fn);
1886 ret = AVERROR(EINVAL);
1895 static int format_name(const char *buf, char **s, int index, const char *varname)
1897 const char *proto, *dir;
1898 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1901 orig_buf_dup = av_strdup(buf);
1903 return AVERROR(ENOMEM);
1905 if (!av_stristr(buf, "%v")) {
1911 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1912 ret = AVERROR(EINVAL);
1916 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1917 ret = AVERROR(EINVAL);
1922 proto = avio_find_protocol_name(orig_buf_dup);
1923 dir = av_dirname(orig_buf_dup);
1925 /* if %v is present in the file's directory, create sub-directory */
1926 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1927 mod_buf_dup = av_strdup(*s);
1928 dir = av_dirname(mod_buf_dup);
1929 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1930 ret = AVERROR(errno);
1936 av_freep(&orig_buf_dup);
1937 av_freep(&mod_buf_dup);
1941 static int get_nth_codec_stream_index(AVFormatContext *s,
1942 enum AVMediaType codec_type,
1945 unsigned int stream_index, cnt;
1946 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1949 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1950 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1952 if (cnt == stream_id)
1953 return stream_index;
1959 static int parse_variant_stream_mapstring(AVFormatContext *s)
1961 HLSContext *hls = s->priv_data;
1963 int stream_index, i, j;
1964 enum AVMediaType codec_type;
1965 int nb_varstreams = 0, nb_streams;
1966 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1970 * Expected format for var_stream_map string is as below:
1972 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1973 * This string specifies how to group the audio, video and subtitle streams
1974 * into different variant streams. The variant stream groups are separated
1977 * a:, v:, s: are keys to specify audio, video and subtitle streams
1978 * respectively. Allowed values are 0 to 9 digits (limited just based on
1981 * agroup: is key to specify audio group. A string can be given as value.
1982 * sgroup: is key to specify subtitle group. A string can be given as value.
1984 p = av_strdup(hls->var_stream_map);
1986 return AVERROR(ENOMEM);
1989 while (av_strtok(q, " \t", &saveptr1)) {
1995 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1996 if (!hls->var_streams)
1997 return AVERROR(ENOMEM);
1998 hls->nb_varstreams = nb_varstreams;
2000 p = hls->var_stream_map;
2002 while (varstr = av_strtok(p, " \t", &saveptr1)) {
2005 if (nb_varstreams < hls->nb_varstreams) {
2006 vs = &(hls->var_streams[nb_varstreams]);
2007 vs->var_stream_idx = nb_varstreams;
2011 return AVERROR(EINVAL);
2015 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
2016 !av_strncasecmp(q, "s:", 2))
2023 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
2025 return AVERROR(ENOMEM);
2028 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
2032 if (av_strstart(keyval, "language:", &val)) {
2035 } else if (av_strstart(keyval, "default:", &val)) {
2036 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
2037 (!av_strncasecmp(val, "1", strlen("1"))));
2038 hls->has_default_key = 1;
2040 } else if (av_strstart(keyval, "name:", &val)) {
2043 } else if (av_strstart(keyval, "agroup:", &val)) {
2046 } else if (av_strstart(keyval, "sgroup:", &val)) {
2049 } else if (av_strstart(keyval, "ccgroup:", &val)) {
2052 } else if (av_strstart(keyval, "v:", &val)) {
2053 codec_type = AVMEDIA_TYPE_VIDEO;
2054 hls->has_video_m3u8 = 1;
2055 } else if (av_strstart(keyval, "a:", &val)) {
2056 codec_type = AVMEDIA_TYPE_AUDIO;
2057 } else if (av_strstart(keyval, "s:", &val)) {
2058 codec_type = AVMEDIA_TYPE_SUBTITLE;
2060 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2061 return AVERROR(EINVAL);
2064 num = strtoll(val, &end, 10);
2065 if (!av_isdigit(*val) || *end != '\0') {
2066 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2067 return AVERROR(EINVAL);
2069 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2071 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2072 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2073 if (vs->streams[i] == s->streams[stream_index]) {
2074 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2075 "variant definition #%d\n", nb_varstreams - 1);
2076 return AVERROR(EINVAL);
2079 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2080 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2081 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2082 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2083 "in two different variant definitions #%d and #%d\n",
2084 j, nb_varstreams - 1);
2085 return AVERROR(EINVAL);
2089 vs->streams[nb_streams++] = s->streams[stream_index];
2091 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2092 return AVERROR(EINVAL);
2096 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2097 hls->nb_varstreams);
2102 static int parse_cc_stream_mapstring(AVFormatContext *s)
2104 HLSContext *hls = s->priv_data;
2105 int nb_ccstreams = 0;
2106 char *p, *q, *ccstr, *keyval;
2107 char *saveptr1 = NULL, *saveptr2 = NULL;
2109 ClosedCaptionsStream *ccs;
2111 p = av_strdup(hls->cc_stream_map);
2113 return AVERROR(ENOMEM);
2116 while (av_strtok(q, " \t", &saveptr1)) {
2122 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2123 if (!hls->cc_streams)
2124 return AVERROR(ENOMEM);
2125 hls->nb_ccstreams = nb_ccstreams;
2127 p = hls->cc_stream_map;
2129 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2132 if (nb_ccstreams < hls->nb_ccstreams)
2133 ccs = &(hls->cc_streams[nb_ccstreams++]);
2135 return AVERROR(EINVAL);
2137 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2140 if (av_strstart(keyval, "ccgroup:", &val)) {
2142 } else if (av_strstart(keyval, "instreamid:", &val)) {
2143 ccs->instreamid = val;
2144 } else if (av_strstart(keyval, "language:", &val)) {
2145 ccs->language = val;
2147 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2148 return AVERROR(EINVAL);
2152 if (!ccs->ccgroup || !ccs->instreamid) {
2153 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2154 return AVERROR(EINVAL);
2157 if (av_strstart(ccs->instreamid, "CC", &val)) {
2158 if (atoi(val) < 1 || atoi(val) > 4) {
2159 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2160 atoi(val), ccs->instreamid);
2161 return AVERROR(EINVAL);
2163 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2164 if (atoi(val) < 1 || atoi(val) > 63) {
2165 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2166 atoi(val), ccs->instreamid);
2167 return AVERROR(EINVAL);
2170 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2172 return AVERROR(EINVAL);
2179 static int update_variant_stream_info(AVFormatContext *s)
2181 HLSContext *hls = s->priv_data;
2185 if (hls->cc_stream_map) {
2186 ret = parse_cc_stream_mapstring(s);
2191 if (hls->var_stream_map) {
2192 return parse_variant_stream_mapstring(s);
2194 //By default, a single variant stream with all the codec streams is created
2195 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2196 if (!hls->var_streams)
2197 return AVERROR(ENOMEM);
2198 hls->nb_varstreams = 1;
2200 hls->var_streams[0].var_stream_idx = 0;
2201 hls->var_streams[0].nb_streams = s->nb_streams;
2202 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2203 hls->var_streams[0].nb_streams);
2204 if (!hls->var_streams[0].streams)
2205 return AVERROR(ENOMEM);
2207 //by default, the first available ccgroup is mapped to the variant stream
2208 if (hls->nb_ccstreams)
2209 hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2211 for (i = 0; i < s->nb_streams; i++)
2212 hls->var_streams[0].streams[i] = s->streams[i];
2217 static int update_master_pl_info(AVFormatContext *s)
2219 HLSContext *hls = s->priv_data;
2221 char *fn1= NULL, *fn2 = NULL;
2224 fn1 = av_strdup(s->url);
2226 return AVERROR(ENOMEM);
2227 dir = av_dirname(fn1);
2230 * if output file's directory has %v, variants are created in sub-directories
2231 * then master is created at the sub-directories level
2233 if (dir && av_stristr(av_basename(dir), "%v")) {
2234 fn2 = av_strdup(dir);
2236 ret = AVERROR(ENOMEM);
2239 dir = av_dirname(fn2);
2242 if (dir && strcmp(dir, "."))
2243 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2245 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2247 if (!hls->master_m3u8_url) {
2248 ret = AVERROR(ENOMEM);
2259 static int hls_write_header(AVFormatContext *s)
2261 HLSContext *hls = s->priv_data;
2263 VariantStream *vs = NULL;
2265 for (i = 0; i < hls->nb_varstreams; i++) {
2266 vs = &hls->var_streams[i];
2268 ret = avformat_write_header(vs->avf, NULL);
2271 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2272 for (j = 0; j < vs->nb_streams; j++) {
2274 AVStream *outer_st = vs->streams[j];
2276 if (hls->max_seg_size > 0) {
2277 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2278 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2279 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2280 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2281 outer_st->codecpar->bit_rate, hls->max_seg_size);
2285 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2286 inner_st = vs->avf->streams[j];
2287 else if (vs->vtt_avf)
2288 inner_st = vs->vtt_avf->streams[0];
2290 /* We have a subtitle stream, when the user does not want one */
2294 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2295 if (outer_st->codecpar->codec_id == AV_CODEC_ID_HEVC &&
2296 outer_st->codecpar->codec_tag != MKTAG('h','v','c','1')) {
2297 av_log(s, AV_LOG_WARNING, "Stream HEVC is not hvc1, you should use tag:v hvc1 to set it.\n");
2299 write_codec_attr(outer_st, vs);
2302 /* Update the Codec Attr string for the mapped audio groups */
2303 if (vs->has_video && vs->agroup) {
2304 for (j = 0; j < hls->nb_varstreams; j++) {
2305 VariantStream *vs_agroup = &(hls->var_streams[j]);
2306 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2307 vs_agroup->agroup &&
2308 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2309 write_codec_attr(vs_agroup->streams[0], vs);
2318 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2320 HLSContext *hls = s->priv_data;
2321 AVDictionary *options = NULL;
2324 set_http_options(s, &options, hls);
2325 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2326 av_dict_free(&options);
2329 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2330 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2335 static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
2338 int64_t read_byte = 0;
2339 int64_t total_size = 0;
2340 char *filename = NULL;
2342 AVFormatContext *oc = vs->avf;
2344 hlsenc_io_close(s, &vs->out, vs->basename_tmp);
2345 filename = av_asprintf("%s.tmp", oc->url);
2346 ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
2353 memset(buf, 0, sizeof(BUFSIZE));
2354 read_byte = avio_read(vs->out, buf, BUFSIZE);
2355 avio_write(vs->out_single_file, buf, read_byte);
2356 if (read_byte > 0) {
2357 total_size += read_byte;
2360 } while (read_byte > 0);
2362 hlsenc_io_close(s, &vs->out, filename);
2367 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2369 HLSContext *hls = s->priv_data;
2370 AVFormatContext *oc = NULL;
2371 AVStream *st = s->streams[pkt->stream_index];
2372 int64_t end_pts = 0;
2374 int ret = 0, can_split = 1, i, j;
2375 int stream_index = 0;
2376 int range_length = 0;
2377 const char *proto = NULL;
2378 int use_temp_file = 0;
2379 VariantStream *vs = NULL;
2380 char *old_filename = NULL;
2382 for (i = 0; i < hls->nb_varstreams; i++) {
2383 vs = &hls->var_streams[i];
2384 for (j = 0; j < vs->nb_streams; j++) {
2385 if (vs->streams[j] == st) {
2386 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2402 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2403 return AVERROR(ENOMEM);
2406 end_pts = hls->recording_time * vs->number;
2408 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2409 /* reset end_pts, hls->recording_time at end of the init hls list */
2410 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2411 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * (hls->time * AV_TIME_BASE);
2412 hls->recording_time = hls->time * AV_TIME_BASE;
2413 end_pts = init_list_dur + after_init_list_dur ;
2416 if (vs->start_pts == AV_NOPTS_VALUE) {
2417 vs->start_pts = pkt->pts;
2418 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2419 vs->start_pts_from_audio = 1;
2421 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2422 vs->start_pts = pkt->pts;
2423 vs->start_pts_from_audio = 0;
2426 if (vs->has_video) {
2427 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2428 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2429 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2431 if (pkt->pts == AV_NOPTS_VALUE)
2432 is_ref_pkt = can_split = 0;
2435 if (vs->end_pts == AV_NOPTS_VALUE)
2436 vs->end_pts = pkt->pts;
2437 if (vs->new_start) {
2439 vs->duration = (double)(pkt->pts - vs->end_pts)
2440 * st->time_base.num / st->time_base.den;
2441 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2443 if (pkt->duration) {
2444 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2446 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2447 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2452 can_split = can_split && (pkt->pts - vs->end_pts > 0);
2453 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2454 end_pts, AV_TIME_BASE_Q) >= 0) {
2455 int64_t new_start_pos;
2456 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2458 av_write_frame(oc, NULL); /* Flush any buffered data */
2459 new_start_pos = avio_tell(oc->pb);
2460 vs->size = new_start_pos - vs->start_pos;
2462 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2463 if (!vs->init_range_length) {
2464 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2465 if (range_length <= 0)
2466 return AVERROR(EINVAL);
2467 avio_write(vs->out, vs->init_buffer, range_length);
2468 if (!hls->resend_init_file)
2469 av_freep(&vs->init_buffer);
2470 vs->init_range_length = range_length;
2471 avio_open_dyn_buf(&oc->pb);
2472 vs->packets_written = 0;
2473 vs->start_pos = range_length;
2474 if (!byterange_mode) {
2475 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2479 if (!byterange_mode) {
2481 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2485 if (hls->flags & HLS_SINGLE_FILE) {
2486 ret = flush_dynbuf(vs, &range_length);
2487 av_freep(&vs->temp_buffer);
2491 vs->size = range_length;
2492 if (hls->key_info_file || hls->encrypt)
2493 vs->size = append_single_file(s, vs);
2496 proto = avio_find_protocol_name(oc->url);
2497 use_temp_file = proto && !strcmp(proto, "file")
2498 && (hls->flags & HLS_TEMP_FILE);
2501 if ((hls->max_seg_size > 0 && (vs->size + vs->start_pos >= hls->max_seg_size)) || !byterange_mode) {
2502 AVDictionary *options = NULL;
2503 char *filename = NULL;
2504 if (hls->key_info_file || hls->encrypt) {
2505 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2506 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2507 filename = av_asprintf("crypto:%s", oc->url);
2509 filename = av_asprintf("%s", oc->url);
2512 av_dict_free(&options);
2513 return AVERROR(ENOMEM);
2516 // look to rename the asset name
2518 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2520 set_http_options(s, &options, hls);
2522 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2524 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2525 "Failed to open file '%s'\n", filename);
2526 av_freep(&filename);
2527 av_dict_free(&options);
2528 return hls->ignore_io_errors ? 0 : ret;
2530 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2531 write_styp(vs->out);
2533 ret = flush_dynbuf(vs, &range_length);
2535 av_freep(&filename);
2536 av_dict_free(&options);
2539 ret = hlsenc_io_close(s, &vs->out, filename);
2541 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2542 " will retry with a new http session.\n");
2543 ff_format_io_close(s, &vs->out);
2544 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2545 reflush_dynbuf(vs, &range_length);
2546 ret = hlsenc_io_close(s, &vs->out, filename);
2548 av_dict_free(&options);
2549 av_freep(&vs->temp_buffer);
2550 av_freep(&filename);
2554 hls_rename_temp_file(s, oc);
2557 old_filename = av_strdup(oc->url);
2558 if (!old_filename) {
2559 return AVERROR(ENOMEM);
2562 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2563 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2564 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2565 vs->end_pts = pkt->pts;
2568 av_freep(&old_filename);
2573 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2574 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2575 if ((ret = hls_window(s, 0, vs)) < 0) {
2576 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2577 ff_format_io_close(s, &vs->out);
2578 if ((ret = hls_window(s, 0, vs)) < 0) {
2579 av_freep(&old_filename);
2585 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2586 ret = hls_init_file_resend(s, vs);
2588 av_freep(&old_filename);
2593 if (hls->flags & HLS_SINGLE_FILE) {
2594 vs->start_pos += vs->size;
2595 if (hls->key_info_file || hls->encrypt)
2596 ret = hls_start(s, vs);
2597 } else if (hls->max_seg_size > 0) {
2598 if (vs->size + vs->start_pos >= hls->max_seg_size) {
2600 sls_flag_file_rename(hls, vs, old_filename);
2601 ret = hls_start(s, vs);
2603 /* When split segment by byte, the duration is short than hls_time,
2604 * so it is not enough one segment duration as hls_time, */
2606 vs->start_pos = new_start_pos;
2609 vs->start_pos = new_start_pos;
2610 sls_flag_file_rename(hls, vs, old_filename);
2611 ret = hls_start(s, vs);
2614 av_freep(&old_filename);
2622 vs->packets_written++;
2624 int64_t keyframe_pre_pos = avio_tell(oc->pb);
2625 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2626 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2627 (pkt->flags & AV_PKT_FLAG_KEY) && !keyframe_pre_pos) {
2628 av_write_frame(oc, NULL); /* Flush any buffered data */
2629 vs->video_keyframe_size = avio_tell(oc->pb) - keyframe_pre_pos;
2631 vs->video_keyframe_pos = vs->start_pos;
2632 if (hls->ignore_io_errors)
2639 static void hls_deinit(AVFormatContext *s)
2641 HLSContext *hls = s->priv_data;
2643 VariantStream *vs = NULL;
2645 for (i = 0; i < hls->nb_varstreams; i++) {
2646 vs = &hls->var_streams[i];
2648 av_freep(&vs->basename);
2649 av_freep(&vs->base_output_dirname);
2650 av_freep(&vs->fmp4_init_filename);
2651 av_freep(&vs->vtt_basename);
2652 av_freep(&vs->vtt_m3u8_name);
2654 avformat_free_context(vs->vtt_avf);
2655 avformat_free_context(vs->avf);
2656 if (hls->resend_init_file)
2657 av_freep(&vs->init_buffer);
2658 hls_free_segments(vs->segments);
2659 hls_free_segments(vs->old_segments);
2660 av_freep(&vs->m3u8_name);
2661 av_freep(&vs->streams);
2664 ff_format_io_close(s, &hls->m3u8_out);
2665 ff_format_io_close(s, &hls->sub_m3u8_out);
2666 av_freep(&hls->key_basename);
2667 av_freep(&hls->var_streams);
2668 av_freep(&hls->cc_streams);
2669 av_freep(&hls->master_m3u8_url);
2672 static int hls_write_trailer(struct AVFormatContext *s)
2674 HLSContext *hls = s->priv_data;
2675 AVFormatContext *oc = NULL;
2676 AVFormatContext *vtt_oc = NULL;
2677 char *old_filename = NULL;
2678 const char *proto = NULL;
2679 int use_temp_file = 0;
2682 VariantStream *vs = NULL;
2683 AVDictionary *options = NULL;
2684 int range_length, byterange_mode;
2686 for (i = 0; i < hls->nb_varstreams; i++) {
2687 char *filename = NULL;
2688 vs = &hls->var_streams[i];
2690 vtt_oc = vs->vtt_avf;
2691 old_filename = av_strdup(oc->url);
2694 if (!old_filename) {
2695 return AVERROR(ENOMEM);
2697 if (hls->key_info_file || hls->encrypt) {
2698 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2699 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2700 filename = av_asprintf("crypto:%s", oc->url);
2702 filename = av_asprintf("%s", oc->url);
2705 av_freep(&old_filename);
2706 return AVERROR(ENOMEM);
2709 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2710 int range_length = 0;
2711 if (!vs->init_range_length) {
2712 uint8_t *buffer = NULL;
2713 av_write_frame(oc, NULL); /* Flush any buffered data */
2715 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2716 avio_write(vs->out, buffer, range_length);
2718 vs->init_range_length = range_length;
2719 avio_open_dyn_buf(&oc->pb);
2720 vs->packets_written = 0;
2721 vs->start_pos = range_length;
2722 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2723 if (!byterange_mode) {
2724 ff_format_io_close(s, &vs->out);
2725 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2729 if (!(hls->flags & HLS_SINGLE_FILE)) {
2730 set_http_options(s, &options, hls);
2731 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2733 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2736 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2737 write_styp(vs->out);
2739 ret = flush_dynbuf(vs, &range_length);
2743 vs->size = range_length;
2744 ret = hlsenc_io_close(s, &vs->out, filename);
2746 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2747 ff_format_io_close(s, &vs->out);
2748 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2750 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2753 reflush_dynbuf(vs, &range_length);
2754 ret = hlsenc_io_close(s, &vs->out, filename);
2756 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2758 if (hls->flags & HLS_SINGLE_FILE) {
2759 if (hls->key_info_file || hls->encrypt) {
2760 vs->size = append_single_file(s, vs);
2762 hlsenc_io_close(s, &vs->out_single_file, vs->basename);
2765 av_freep(&vs->temp_buffer);
2766 av_dict_free(&options);
2767 av_freep(&filename);
2768 av_write_trailer(oc);
2770 proto = avio_find_protocol_name(oc->url);
2771 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2774 // rename that segment from .tmp to the real one
2775 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2776 hls_rename_temp_file(s, oc);
2777 av_freep(&old_filename);
2778 old_filename = av_strdup(oc->url);
2780 if (!old_filename) {
2781 return AVERROR(ENOMEM);
2785 /* after av_write_trailer, then duration + 1 duration per packet */
2786 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2788 sls_flag_file_rename(hls, vs, old_filename);
2792 av_write_trailer(vtt_oc);
2793 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2794 ff_format_io_close(s, &vtt_oc->pb);
2796 ret = hls_window(s, 1, vs);
2798 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2799 ff_format_io_close(s, &vs->out);
2800 hls_window(s, 1, vs);
2802 ffio_free_dyn_buf(&oc->pb);
2804 av_free(old_filename);
2811 static int hls_init(AVFormatContext *s)
2816 HLSContext *hls = s->priv_data;
2817 const char *pattern;
2818 VariantStream *vs = NULL;
2819 const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2821 int http_base_proto = ff_is_http_proto(s->url);
2822 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2823 double initial_program_date_time = av_gettime() / 1000000.0;
2825 if (hls->use_localtime) {
2826 pattern = get_default_pattern_localtime_fmt(s);
2828 pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2829 if (hls->flags & HLS_SINGLE_FILE)
2833 hls->has_default_key = 0;
2834 hls->has_video_m3u8 = 0;
2835 ret = update_variant_stream_info(s);
2837 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2842 if (!hls->method && http_base_proto) {
2843 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2846 ret = validate_name(hls->nb_varstreams, s->url);
2850 if (hls->segment_filename) {
2851 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2856 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2857 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2862 if (hls->subtitle_filename) {
2863 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2868 if (hls->master_pl_name) {
2869 ret = update_master_pl_info(s);
2871 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2877 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2878 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2879 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2880 time_t t = time(NULL);
2881 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2882 hls->start_sequence = av_gettime();
2883 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2884 hls->start_sequence = (int64_t)t;
2885 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2887 struct tm *p, tmbuf;
2888 if (!(p = localtime_r(&t, &tmbuf)))
2889 return AVERROR(errno);
2890 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2891 return AVERROR(ENOMEM);
2892 hls->start_sequence = strtoll(b, NULL, 10);
2894 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2897 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2899 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2900 // Independent segments cannot be guaranteed when splitting by time
2901 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2902 av_log(s, AV_LOG_WARNING,
2903 "'split_by_time' and 'independent_segments' cannot be "
2904 "enabled together. Disabling 'independent_segments' flag\n");
2907 for (i = 0; i < hls->nb_varstreams; i++) {
2908 vs = &hls->var_streams[i];
2910 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2914 vs->sequence = hls->start_sequence;
2915 vs->start_pts = AV_NOPTS_VALUE;
2916 vs->end_pts = AV_NOPTS_VALUE;
2917 vs->current_segment_final_filename_fmt[0] = '\0';
2918 vs->initial_prog_date_time = initial_program_date_time;
2920 for (j = 0; j < vs->nb_streams; j++) {
2921 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2922 /* Get one video stream to reference for split segments
2923 * so use the first video stream index. */
2924 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2925 vs->reference_stream_index = vs->streams[j]->index;
2927 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2930 if (vs->has_video > 1)
2931 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2932 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2933 vs->oformat = av_guess_format("mp4", NULL, NULL);
2935 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2938 return AVERROR_MUXER_NOT_FOUND;
2940 if (hls->segment_filename) {
2941 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2945 p = strrchr(vs->m3u8_name, '.');
2949 vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
2951 return AVERROR(ENOMEM);
2957 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2958 if (hls->nb_varstreams > 1)
2959 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2960 if (hls->flags & HLS_SINGLE_FILE) {
2961 vs->fmp4_init_filename = av_strdup(vs->basename);
2962 if (!vs->fmp4_init_filename)
2963 return AVERROR(ENOMEM);
2965 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2966 if (!vs->fmp4_init_filename)
2967 return AVERROR(ENOMEM);
2968 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2969 fmp4_init_filename_len);
2970 if (hls->nb_varstreams > 1) {
2971 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2972 av_freep(&vs->fmp4_init_filename);
2973 ret = format_name(hls->fmp4_init_filename,
2974 &vs->fmp4_init_filename, i, vs->varname);
2976 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2982 p = strrchr(vs->m3u8_name, '/');
2986 vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
2987 vs->fmp4_init_filename);
2990 vs->base_output_dirname = av_strdup(vs->fmp4_init_filename);
2992 if (!vs->base_output_dirname)
2993 return AVERROR(ENOMEM);
2997 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
3001 if (vs->has_subtitle) {
3002 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
3003 if (!vs->vtt_oformat)
3004 return AVERROR_MUXER_NOT_FOUND;
3006 p = strrchr(vs->m3u8_name, '.');
3010 vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
3011 if (!vs->vtt_basename)
3012 return AVERROR(ENOMEM);
3014 if (hls->subtitle_filename) {
3015 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
3019 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
3020 if (!vs->vtt_m3u8_name)
3021 return AVERROR(ENOMEM);
3027 if ((ret = hls_mux_init(s, vs)) < 0)
3030 if (hls->flags & HLS_APPEND_LIST) {
3031 parse_playlist(s, vs->m3u8_name, vs);
3032 vs->discontinuity = 1;
3033 if (hls->init_time > 0) {
3034 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3035 " hls_init_time value will have no effect\n");
3037 hls->recording_time = hls->time * AV_TIME_BASE;
3041 if ((ret = hls_start(s, vs)) < 0)
3049 #define OFFSET(x) offsetof(HLSContext, x)
3050 #define E AV_OPT_FLAG_ENCODING_PARAM
3051 static const AVOption options[] = {
3052 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3053 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3054 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3055 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3056 {"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},
3057 {"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},
3058 {"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},
3060 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3062 {"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},
3063 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3064 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3065 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3066 {"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},
3067 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3068 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3069 {"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},
3070 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3071 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3072 {"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"},
3073 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3074 {"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"},
3075 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3076 {"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 },
3077 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3078 {"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"},
3079 {"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"},
3080 {"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"},
3081 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3082 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3083 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3084 {"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"},
3085 {"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"},
3086 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3087 {"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"},
3088 {"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"},
3089 {"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"},
3090 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3091 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3092 {"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"},
3093 #if FF_API_HLS_USE_LOCALTIME
3094 {"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 },
3096 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3097 #if FF_API_HLS_USE_LOCALTIME
3098 {"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 },
3100 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3101 {"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" },
3102 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3103 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3104 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3105 {"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" },
3106 {"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" },
3107 {"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" },
3108 {"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" },
3109 {"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" },
3110 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3111 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3112 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3113 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3114 {"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},
3115 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3116 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3117 {"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 },
3118 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3122 static const AVClass hls_class = {
3123 .class_name = "hls muxer",
3124 .item_name = av_default_item_name,
3126 .version = LIBAVUTIL_VERSION_INT,
3130 AVOutputFormat ff_hls_muxer = {
3132 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3133 .extensions = "m3u8",
3134 .priv_data_size = sizeof(HLSContext),
3135 .audio_codec = AV_CODEC_ID_AAC,
3136 .video_codec = AV_CODEC_ID_H264,
3137 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3138 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3140 .write_header = hls_write_header,
3141 .write_packet = hls_write_packet,
3142 .write_trailer = hls_write_trailer,
3143 .deinit = hls_deinit,
3144 .priv_class = &hls_class,