2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
33 #include <openssl/rand.h>
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time_internal.h"
47 #include "avio_internal.h"
48 #if CONFIG_HTTP_PROTOCOL
51 #include "hlsplaylist.h"
53 #include "os_support.h"
56 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
57 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
58 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
59 } StartSequenceSourceType;
62 CODEC_ATTRIBUTE_WRITTEN = 0,
63 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
64 } CodecAttributeStatus;
67 #define LINE_BUFFER_SIZE MAX_URL_SIZE
68 #define HLS_MICROSECOND_UNIT 1000000
69 #define POSTFIX_PATTERN "_%d"
71 typedef struct HLSSegment {
72 char filename[MAX_URL_SIZE];
73 char sub_filename[MAX_URL_SIZE];
74 double duration; /* in seconds */
79 int64_t keyframe_size;
80 unsigned var_stream_idx;
82 char key_uri[LINE_BUFFER_SIZE + 1];
83 char iv_string[KEYSIZE*2 + 1];
85 struct HLSSegment *next;
88 typedef enum HLSFlags {
89 // Generate a single media file and use byte ranges in the playlist.
90 HLS_SINGLE_FILE = (1 << 0),
91 HLS_DELETE_SEGMENTS = (1 << 1),
92 HLS_ROUND_DURATIONS = (1 << 2),
93 HLS_DISCONT_START = (1 << 3),
94 HLS_OMIT_ENDLIST = (1 << 4),
95 HLS_SPLIT_BY_TIME = (1 << 5),
96 HLS_APPEND_LIST = (1 << 6),
97 HLS_PROGRAM_DATE_TIME = (1 << 7),
98 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
99 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
100 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
101 HLS_TEMP_FILE = (1 << 11),
102 HLS_PERIODIC_REKEY = (1 << 12),
103 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
104 HLS_I_FRAMES_ONLY = (1 << 14),
112 typedef struct VariantStream {
113 unsigned var_stream_idx;
116 ff_const59 AVOutputFormat *oformat;
117 ff_const59 AVOutputFormat *vtt_oformat;
120 int init_range_length;
121 uint8_t *temp_buffer;
123 AVFormatContext *avf;
124 AVFormatContext *vtt_avf;
129 double dpp; // duration per packet
132 int64_t video_lastpos;
133 int64_t video_keyframe_pos;
134 int64_t video_keyframe_size;
135 double duration; // last segment duration computed so far, in seconds
136 int64_t start_pos; // last segment starting position
137 int64_t size; // last segment size
139 int discontinuity_set;
141 int reference_stream_index;
143 HLSSegment *segments;
144 HLSSegment *last_segment;
145 HLSSegment *old_segments;
152 double initial_prog_date_time;
153 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
155 char *fmp4_init_filename;
156 char *base_output_dirname;
159 char codec_attr[128];
160 CodecAttributeStatus attr_status;
161 unsigned int nb_streams;
162 int m3u8_created; /* status of media play-list creation */
163 int is_default; /* default status of audio group */
164 char *language; /* audio lauguage name */
165 char *agroup; /* audio group name */
166 char *ccgroup; /* closed caption group name */
168 char *varname; // variant name
171 typedef struct ClosedCaptionsStream {
172 char *ccgroup; /* closed caption group name */
173 char *instreamid; /* closed captions INSTREAM-ID */
174 char *language; /* closed captions langauge */
175 } ClosedCaptionsStream;
177 typedef struct HLSContext {
178 const AVClass *class; // Class for private options.
179 int64_t start_sequence;
180 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
182 float time; // Set by a private option.
183 float init_time; // Set by a private option.
184 int max_nb_segments; // Set by a private option.
185 int hls_delete_threshold; // Set by a private option.
187 int wrap; // Set by a private option.
189 uint32_t flags; // enum HLSFlags
190 uint32_t pl_type; // enum PlaylistType
191 char *segment_filename;
192 char *fmp4_init_filename;
195 int use_localtime; ///< flag to expand filename with localtime
196 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
198 int64_t recording_time;
199 int64_t max_seg_size; // every segment file max size
202 char *format_options_str;
203 char *vtt_format_options_str;
204 char *subtitle_filename;
205 AVDictionary *format_options;
215 char key_file[LINE_BUFFER_SIZE + 1];
216 char key_uri[LINE_BUFFER_SIZE + 1];
217 char key_string[KEYSIZE*2 + 1];
218 char iv_string[KEYSIZE*2 + 1];
219 AVDictionary *vtt_format_options;
224 VariantStream *var_streams;
225 unsigned int nb_varstreams;
226 ClosedCaptionsStream *cc_streams;
227 unsigned int nb_ccstreams;
229 int master_m3u8_created; /* status of master play-list creation */
230 char *master_m3u8_url; /* URL of the master m3u8 file */
231 int version; /* HLS version */
232 char *var_stream_map; /* user specified variant stream map string */
233 char *cc_stream_map; /* user specified closed caption streams map string */
234 char *master_pl_name;
235 unsigned int master_publish_rate;
237 AVIOContext *m3u8_out;
238 AVIOContext *sub_m3u8_out;
240 int ignore_io_errors;
242 int has_default_key; /* has DEFAULT field of var_stream_map */
243 int has_video_m3u8; /* has video stream m3u8 list */
246 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
247 AVDictionary **options)
249 HLSContext *hls = s->priv_data;
250 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
251 int err = AVERROR_MUXER_NOT_FOUND;
252 if (!*pb || !http_base_proto || !hls->http_persistent) {
253 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
254 #if CONFIG_HTTP_PROTOCOL
256 URLContext *http_url_context = ffio_geturlcontext(*pb);
257 av_assert0(http_url_context);
258 err = ff_http_do_new_request(http_url_context, filename);
260 ff_format_io_close(s, pb);
267 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
269 HLSContext *hls = s->priv_data;
270 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
274 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
275 ff_format_io_close(s, pb);
276 #if CONFIG_HTTP_PROTOCOL
278 URLContext *http_url_context = ffio_geturlcontext(*pb);
279 av_assert0(http_url_context);
281 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
282 ret = ff_http_get_shutdown_status(http_url_context);
288 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
290 int http_base_proto = ff_is_http_proto(s->url);
293 av_dict_set(options, "method", c->method, 0);
294 } else if (http_base_proto) {
295 av_dict_set(options, "method", "PUT", 0);
298 av_dict_set(options, "user_agent", c->user_agent, 0);
299 if (c->http_persistent)
300 av_dict_set_int(options, "multiple_requests", 1, 0);
302 av_dict_set_int(options, "timeout", c->timeout, 0);
304 av_dict_set(options, "headers", c->headers, 0);
307 static void write_codec_attr(AVStream *st, VariantStream *vs)
309 int codec_strlen = strlen(vs->codec_attr);
312 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
314 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
317 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
318 uint8_t *data = st->codecpar->extradata;
319 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
320 snprintf(attr, sizeof(attr),
321 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
325 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
326 snprintf(attr, sizeof(attr), "mp4a.40.33");
327 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
328 snprintf(attr, sizeof(attr), "mp4a.40.34");
329 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
330 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
331 snprintf(attr, sizeof(attr), "mp4a.40.2");
332 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
333 snprintf(attr, sizeof(attr), "ac-3");
334 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
335 snprintf(attr, sizeof(attr), "ec-3");
339 // Don't write the same attribute multiple times
340 if (!av_stristr(vs->codec_attr, attr)) {
341 snprintf(vs->codec_attr + codec_strlen,
342 sizeof(vs->codec_attr) - codec_strlen,
343 "%s%s", codec_strlen ? "," : "", attr);
348 vs->codec_attr[0] = '\0';
349 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
353 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
362 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
369 if (c == '%' && *(p+1) == '%') // %%
371 else if (c == '%' && *(p+1) == placeholder) {
372 av_bprintf(&buf, "%s", datastring);
379 if (addchar_count > 0) {
380 av_bprint_append_data(&buf, p, addchar_count);
384 if (!av_bprint_is_complete(&buf)) {
385 av_bprint_finalize(&buf, NULL);
388 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
394 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
399 int nd, addchar_count;
403 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
410 if (c == '%' && *(p+1) == '%') // %%
412 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
415 while (av_isdigit(*(p + addchar_count))) {
416 nd = nd * 10 + *(p + addchar_count) - '0';
420 if (*(p + addchar_count) == placeholder) {
421 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
422 p += (addchar_count + 1);
430 av_bprint_append_data(&buf, p, addchar_count);
433 if (!av_bprint_is_complete(&buf)) {
434 av_bprint_finalize(&buf, NULL);
437 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
443 static void write_styp(AVIOContext *pb)
446 ffio_wfourcc(pb, "styp");
447 ffio_wfourcc(pb, "msdh");
448 avio_wb32(pb, 0); /* minor */
449 ffio_wfourcc(pb, "msdh");
450 ffio_wfourcc(pb, "msix");
453 static int flush_dynbuf(VariantStream *vs, int *range_length)
455 AVFormatContext *ctx = vs->avf;
458 return AVERROR(EINVAL);
462 av_write_frame(ctx, NULL);
466 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
468 avio_write(vs->out, vs->temp_buffer, *range_length);
472 return avio_open_dyn_buf(&ctx->pb);
475 static void reflush_dynbuf(VariantStream *vs, int *range_length)
478 avio_write(vs->out, vs->temp_buffer, *range_length);
482 #define SEPARATOR '\\'
484 #define SEPARATOR '/'
487 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
491 HLSSegment *segment, *previous_segment = NULL;
492 float playlist_duration = 0.0f;
493 int ret = 0, path_size, sub_path_size;
495 char *dirname = NULL, *sub_path;
496 char *dirname_r = NULL;
497 char *dirname_repl = NULL;
499 char *vtt_dirname = NULL;
500 char *vtt_dirname_r = NULL;
501 AVDictionary *options = NULL;
502 AVIOContext *out = NULL;
503 const char *proto = NULL;
505 segment = vs->segments;
507 playlist_duration += segment->duration;
508 segment = segment->next;
511 segment = vs->old_segments;
514 playlist_duration -= segment->duration;
515 previous_segment = segment;
516 segment = previous_segment->next;
518 if (playlist_duration <= -previous_segment->duration) {
519 previous_segment->next = NULL;
522 if (segment_cnt >= hls->hls_delete_threshold) {
523 previous_segment->next = NULL;
528 if (segment && !hls->use_localtime_mkdir) {
529 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
530 dirname = (char*)av_dirname(dirname_r);
533 /* if %v is present in the file's directory
534 * all segment belongs to the same variant, so do it only once before the loop*/
535 if (dirname && av_stristr(dirname, "%v")) {
536 char * dirname_repl = dirname;
538 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
539 ret = AVERROR(EINVAL);
543 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
544 ret = AVERROR(EINVAL);
549 dirname = dirname_repl;
553 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
555 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)+1) + strlen(segment->filename) + 1;
556 path = av_malloc(path_size);
558 ret = AVERROR(ENOMEM);
562 if (hls->use_localtime_mkdir)
563 av_strlcpy(path, segment->filename, path_size);
564 else { // segment->filename contains basename only
565 snprintf(path, path_size, "%s%c%s", dirname, SEPARATOR, segment->filename);
568 proto = avio_find_protocol_name(s->url);
569 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
570 av_dict_set(&options, "method", "DELETE", 0);
571 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
572 if (hls->ignore_io_errors)
576 ff_format_io_close(vs->avf, &out);
577 } else if (unlink(path) < 0) {
578 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
579 path, strerror(errno));
582 if ((segment->sub_filename[0] != '\0')) {
583 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
584 vtt_dirname = (char*)av_dirname(vtt_dirname_r);
585 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname) + 1;
586 sub_path = av_malloc(sub_path_size);
588 ret = AVERROR(ENOMEM);
592 snprintf(sub_path, sub_path_size, "%s%c%s", vtt_dirname, SEPARATOR, segment->sub_filename);
594 av_freep(&vtt_dirname_r);
596 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
597 av_dict_set(&options, "method", "DELETE", 0);
598 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
599 if (hls->ignore_io_errors)
604 ff_format_io_close(vs->vtt_avf, &out);
605 } else if (unlink(sub_path) < 0) {
606 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
607 sub_path, strerror(errno));
612 previous_segment = segment;
613 segment = previous_segment->next;
614 av_freep(&previous_segment);
619 av_freep(&dirname_r);
620 av_freep(&dirname_repl);
621 av_freep(&vtt_dirname_r);
626 static int randomize(uint8_t *buf, int len)
629 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
632 if (RAND_bytes(buf, len))
635 return AVERROR(ENOSYS);
637 return AVERROR(EINVAL);
640 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
642 HLSContext *hls = s->priv_data;
646 uint8_t key[KEYSIZE];
648 len = strlen(s->url) + 4 + 1;
649 hls->key_basename = av_mallocz(len);
650 if (!hls->key_basename)
651 return AVERROR(ENOMEM);
653 av_strlcpy(hls->key_basename, s->url, len);
654 av_strlcat(hls->key_basename, ".key", len);
657 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
658 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
660 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
661 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
664 if (!*hls->iv_string) {
665 uint8_t iv[16] = { 0 };
669 AV_WB64(iv + 8, vs->sequence);
671 memcpy(iv, hls->iv, sizeof(iv));
673 ff_data_to_hex(buf, iv, sizeof(iv), 0);
675 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
678 if (!*hls->key_uri) {
679 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
680 return AVERROR(EINVAL);
683 if (!*hls->key_file) {
684 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
685 return AVERROR(EINVAL);
688 if (!*hls->key_string) {
690 if ((ret = randomize(key, sizeof(key))) < 0) {
691 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
695 memcpy(key, hls->key, sizeof(key));
698 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
699 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
701 avio_seek(pb, 0, SEEK_CUR);
702 avio_write(pb, key, KEYSIZE);
709 static int hls_encryption_start(AVFormatContext *s)
711 HLSContext *hls = s->priv_data;
714 uint8_t key[KEYSIZE];
716 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
717 av_log(hls, AV_LOG_ERROR,
718 "error opening key info file %s\n", hls->key_info_file);
722 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
723 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
725 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
726 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
728 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
729 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
731 ff_format_io_close(s, &pb);
733 if (!*hls->key_uri) {
734 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
735 return AVERROR(EINVAL);
738 if (!*hls->key_file) {
739 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
740 return AVERROR(EINVAL);
743 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
744 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
748 ret = avio_read(pb, key, sizeof(key));
749 ff_format_io_close(s, &pb);
750 if (ret != sizeof(key)) {
751 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
752 if (ret >= 0 || ret == AVERROR_EOF)
753 ret = AVERROR(EINVAL);
756 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
761 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
763 AVDictionary *options = NULL;
764 HLSContext *hls = s->priv_data;
766 AVFormatContext *vtt_oc = NULL;
767 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
770 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
775 oc->url = av_strdup("");
777 return AVERROR(ENOMEM);
779 oc->oformat = vs->oformat;
780 oc->interrupt_callback = s->interrupt_callback;
781 oc->max_delay = s->max_delay;
782 oc->opaque = s->opaque;
783 oc->io_open = s->io_open;
784 oc->io_close = s->io_close;
785 oc->strict_std_compliance = s->strict_std_compliance;
786 av_dict_copy(&oc->metadata, s->metadata, 0);
788 if (vs->vtt_oformat) {
789 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
792 vtt_oc = vs->vtt_avf;
793 vtt_oc->oformat = vs->vtt_oformat;
794 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
797 for (i = 0; i < vs->nb_streams; i++) {
799 AVFormatContext *loc;
800 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
805 if (!(st = avformat_new_stream(loc, NULL)))
806 return AVERROR(ENOMEM);
807 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
808 if (!oc->oformat->codec_tag ||
809 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
810 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
811 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
813 st->codecpar->codec_tag = 0;
816 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
817 st->time_base = vs->streams[i]->time_base;
818 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
821 vs->packets_written = 1;
825 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
826 if (hls->http_persistent > 0) {
827 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
828 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
830 if (hls->max_seg_size > 0) {
831 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
832 return AVERROR_PATCHWELCOME;
836 vs->packets_written = 0;
837 vs->init_range_length = 0;
839 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
842 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
843 set_http_options(s, &options, hls);
844 if (byterange_mode) {
845 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
847 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
849 av_dict_free(&options);
852 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
856 if (hls->format_options_str) {
857 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
859 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
860 hls->format_options_str);
865 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
866 int remaining_options;
868 av_dict_copy(&options, hls->format_options, 0);
869 av_dict_set(&options, "fflags", "-autobsf", 0);
870 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
871 ret = avformat_init_output(oc, &options);
872 remaining_options = av_dict_count(options);
873 av_dict_free(&options);
876 if (remaining_options) {
877 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
878 return AVERROR(EINVAL);
885 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
888 if (!av_strcasecmp(segment->filename,filename))
890 segment = segment->next;
892 return (HLSSegment *) NULL;
895 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
896 VariantStream *vs, HLSSegment *en,
897 double duration, int64_t pos, int64_t size)
899 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
900 strlen(vs->current_segment_final_filename_fmt)) {
901 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
903 return AVERROR(ENOMEM);
905 ff_format_set_url(vs->avf, new_url);
906 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
907 char *filename = NULL;
908 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
909 av_log(hls, AV_LOG_ERROR,
910 "Invalid second level segment filename template '%s', "
911 "you can try to remove second_level_segment_size flag\n",
914 return AVERROR(EINVAL);
916 ff_format_set_url(vs->avf, filename);
918 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
919 char *filename = NULL;
920 if (replace_int_data_in_filename(&filename, vs->avf->url,
921 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
922 av_log(hls, AV_LOG_ERROR,
923 "Invalid second level segment filename template '%s', "
924 "you can try to remove second_level_segment_time flag\n",
927 return AVERROR(EINVAL);
929 ff_format_set_url(vs->avf, filename);
935 static int sls_flag_check_duration_size_index(HLSContext *hls)
939 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
940 av_log(hls, AV_LOG_ERROR,
941 "second_level_segment_duration hls_flag requires strftime to be true\n");
942 ret = AVERROR(EINVAL);
944 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
945 av_log(hls, AV_LOG_ERROR,
946 "second_level_segment_size hls_flag requires strfime to be true\n");
947 ret = AVERROR(EINVAL);
949 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
950 av_log(hls, AV_LOG_ERROR,
951 "second_level_segment_index hls_flag requires strftime to be true\n");
952 ret = AVERROR(EINVAL);
958 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
960 const char *proto = avio_find_protocol_name(vs->basename);
961 int segment_renaming_ok = proto && !strcmp(proto, "file");
964 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
965 av_log(hls, AV_LOG_ERROR,
966 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
967 ret = AVERROR(EINVAL);
969 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
970 av_log(hls, AV_LOG_ERROR,
971 "second_level_segment_size hls_flag works only with file protocol segment names\n");
972 ret = AVERROR(EINVAL);
978 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
979 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
980 strlen(vs->current_segment_final_filename_fmt)) {
981 ff_rename(old_filename, vs->avf->url, hls);
985 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
987 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
988 char *filename = NULL;
989 if (replace_int_data_in_filename(&filename,
991 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
993 oc->url, 'd', vs->sequence) < 1) {
995 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
996 "you can try to remove second_level_segment_index flag\n",
999 return AVERROR(EINVAL);
1001 ff_format_set_url(oc, filename);
1003 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1004 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1005 sizeof(vs->current_segment_final_filename_fmt));
1006 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1007 char *filename = NULL;
1008 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1009 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1010 "you can try to remove second_level_segment_size flag\n",
1012 av_freep(&filename);
1013 return AVERROR(EINVAL);
1015 ff_format_set_url(oc, filename);
1017 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1018 char *filename = NULL;
1019 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1020 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1021 "you can try to remove second_level_segment_time flag\n",
1023 av_freep(&filename);
1024 return AVERROR(EINVAL);
1026 ff_format_set_url(oc, filename);
1032 /* Create a new segment and append it to the segment list */
1033 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1034 VariantStream *vs, double duration, int64_t pos,
1037 HLSSegment *en = av_malloc(sizeof(*en));
1038 const char *filename;
1039 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1043 return AVERROR(ENOMEM);
1045 en->var_stream_idx = vs->var_stream_idx;
1046 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1052 filename = av_basename(vs->avf->url);
1054 if (hls->use_localtime_mkdir) {
1055 filename = vs->avf->url;
1057 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1058 && !byterange_mode) {
1059 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1061 av_strlcpy(en->filename, filename, sizeof(en->filename));
1063 if (vs->has_subtitle)
1064 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1066 en->sub_filename[0] = '\0';
1068 en->duration = duration;
1071 en->keyframe_pos = vs->video_keyframe_pos;
1072 en->keyframe_size = vs->video_keyframe_size;
1076 if (vs->discontinuity) {
1078 vs->discontinuity = 0;
1081 if (hls->key_info_file || hls->encrypt) {
1082 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1083 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1089 vs->last_segment->next = en;
1091 vs->last_segment = en;
1093 // EVENT or VOD playlists imply sliding window cannot be used
1094 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1095 hls->max_nb_segments = 0;
1097 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1099 vs->initial_prog_date_time += en->duration;
1100 vs->segments = en->next;
1101 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1103 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1105 !(hls->flags & HLS_SINGLE_FILE)) {
1107 en->next = vs->old_segments;
1108 vs->old_segments = en;
1109 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1116 if (hls->max_seg_size > 0) {
1124 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1126 HLSContext *hls = s->priv_data;
1128 int ret = 0, is_segment = 0;
1129 int64_t new_start_pos;
1130 char line[MAX_URL_SIZE];
1134 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1135 &s->interrupt_callback, NULL,
1136 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1139 ff_get_chomp_line(in, line, sizeof(line));
1140 if (strcmp(line, "#EXTM3U")) {
1141 ret = AVERROR_INVALIDDATA;
1145 vs->discontinuity = 0;
1146 while (!avio_feof(in)) {
1147 ff_get_chomp_line(in, line, sizeof(line));
1148 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1149 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1150 if (tmp_sequence < vs->sequence)
1151 av_log(hls, AV_LOG_VERBOSE,
1152 "Found playlist sequence number was smaller """
1153 "than specified start sequence number: %"PRId64" < %"PRId64", "
1154 "omitting\n", tmp_sequence, hls->start_sequence);
1156 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1157 vs->sequence = tmp_sequence;
1159 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1161 vs->discontinuity = 1;
1162 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1164 vs->duration = atof(ptr);
1165 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1166 ptr = av_stristr(line, "URI=\"");
1168 ptr += strlen("URI=\"");
1169 end = av_stristr(ptr, ",");
1171 av_strlcpy(hls->key_uri, ptr, end - ptr);
1173 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1177 ptr = av_stristr(line, "IV=0x");
1179 ptr += strlen("IV=0x");
1180 end = av_stristr(ptr, ",");
1182 av_strlcpy(hls->iv_string, ptr, end - ptr);
1184 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1188 } else if (av_strstart(line, "#", NULL)) {
1190 } else if (line[0]) {
1192 char *new_file = av_strdup(line);
1194 ret = AVERROR(ENOMEM);
1197 ff_format_set_url(vs->avf, new_file);
1199 new_start_pos = avio_tell(vs->avf->pb);
1200 vs->size = new_start_pos - vs->start_pos;
1201 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1204 vs->start_pos = new_start_pos;
1214 static void hls_free_segments(HLSSegment *p)
1225 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1227 size_t len = strlen(oc->url);
1228 char *final_filename = av_strdup(oc->url);
1231 if (!final_filename)
1232 return AVERROR(ENOMEM);
1233 final_filename[len-4] = '\0';
1234 ret = ff_rename(oc->url, final_filename, s);
1235 oc->url[len-4] = '\0';
1236 av_freep(&final_filename);
1240 static const char* get_relative_url(const char *master_url, const char *media_url)
1242 const char *p = strrchr(master_url, '/');
1243 size_t base_len = 0;
1245 if (!p) p = strrchr(master_url, '\\');
1248 base_len = p + 1 - master_url;
1249 if (av_strncasecmp(master_url, media_url, base_len)) {
1250 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1255 return media_url + base_len;
1258 static int64_t get_stream_bit_rate(AVStream *stream)
1260 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1262 AV_PKT_DATA_CPB_PROPERTIES,
1266 if (stream->codecpar->bit_rate)
1267 return stream->codecpar->bit_rate;
1269 return props->max_bitrate;
1274 static int create_master_playlist(AVFormatContext *s,
1275 VariantStream * const input_vs)
1277 HLSContext *hls = s->priv_data;
1278 VariantStream *vs, *temp_vs;
1279 AVStream *vid_st, *aud_st;
1280 AVDictionary *options = NULL;
1283 const char *m3u8_rel_name = NULL;
1285 ClosedCaptionsStream *ccs;
1286 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1287 int is_file_proto = proto && !strcmp(proto, "file");
1288 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1289 char temp_filename[MAX_URL_SIZE];
1291 input_vs->m3u8_created = 1;
1292 if (!hls->master_m3u8_created) {
1293 /* For the first time, wait until all the media playlists are created */
1294 for (i = 0; i < hls->nb_varstreams; i++)
1295 if (!hls->var_streams[i].m3u8_created)
1298 /* Keep publishing the master playlist at the configured rate */
1299 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1300 input_vs->number % hls->master_publish_rate)
1304 set_http_options(s, &options, hls);
1305 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1306 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1307 av_dict_free(&options);
1309 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1314 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1316 for (i = 0; i < hls->nb_ccstreams; i++) {
1317 ccs = &(hls->cc_streams[i]);
1318 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1319 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1320 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1322 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1323 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1326 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1327 for (i = 0; i < hls->nb_varstreams; i++) {
1328 vs = &(hls->var_streams[i]);
1330 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1333 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1334 if (!m3u8_rel_name) {
1335 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1339 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1342 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1343 for (i = 0; i < hls->nb_varstreams; i++) {
1344 vs = &(hls->var_streams[i]);
1346 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1347 if (!m3u8_rel_name) {
1348 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1354 for (j = 0; j < vs->nb_streams; j++) {
1355 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1356 vid_st = vs->streams[j];
1357 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1358 aud_st = vs->streams[j];
1361 if (!vid_st && !aud_st) {
1362 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1367 * Traverse through the list of audio only rendition streams and find
1368 * the rendition which has highest bitrate in the same audio group
1371 for (j = 0; j < hls->nb_varstreams; j++) {
1372 temp_vs = &(hls->var_streams[j]);
1373 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1375 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1377 aud_st = temp_vs->streams[0];
1378 if (temp_vs->streams[0]->codecpar->bit_rate >
1379 aud_st->codecpar->bit_rate)
1380 aud_st = temp_vs->streams[0];
1387 bandwidth += get_stream_bit_rate(vid_st);
1389 bandwidth += get_stream_bit_rate(aud_st);
1390 bandwidth += bandwidth / 10;
1393 if (vid_st && vs->ccgroup) {
1394 /* check if this group name is available in the cc map string */
1395 for (j = 0; j < hls->nb_ccstreams; j++) {
1396 ccs = &(hls->cc_streams[j]);
1397 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1398 ccgroup = vs->ccgroup;
1402 if (j == hls->nb_ccstreams)
1403 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1407 if (!hls->has_default_key || !hls->has_video_m3u8) {
1408 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1409 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1412 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1413 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1419 hls->master_m3u8_created = 1;
1420 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1422 ff_rename(temp_filename, hls->master_m3u8_url, s);
1427 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1429 HLSContext *hls = s->priv_data;
1431 int target_duration = 0;
1433 char temp_filename[MAX_URL_SIZE];
1434 char temp_vtt_filename[MAX_URL_SIZE];
1435 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1436 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1437 int is_file_proto = proto && !strcmp(proto, "file");
1438 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1439 static unsigned warned_non_file;
1440 char *key_uri = NULL;
1441 char *iv_string = NULL;
1442 AVDictionary *options = NULL;
1443 double prog_date_time = vs->initial_prog_date_time;
1444 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1445 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1448 if (byterange_mode) {
1453 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1457 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1461 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1462 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1464 set_http_options(s, &options, hls);
1465 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1466 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1467 if (hls->ignore_io_errors)
1472 for (en = vs->segments; en; en = en->next) {
1473 if (target_duration <= en->duration)
1474 target_duration = lrint(en->duration);
1477 vs->discontinuity_set = 0;
1478 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1479 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1481 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1482 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1483 vs->discontinuity_set = 1;
1485 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1486 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1488 for (en = vs->segments; en; en = en->next) {
1489 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1490 av_strcasecmp(en->iv_string, iv_string))) {
1491 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1493 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1494 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1495 key_uri = en->key_uri;
1496 iv_string = en->iv_string;
1499 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1500 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1501 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1504 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1505 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1506 en->size, en->pos, vs->baseurl,
1507 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1509 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1513 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1514 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1516 if (vs->vtt_m3u8_name) {
1517 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1518 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1519 if (hls->ignore_io_errors)
1523 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1524 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1525 for (en = vs->segments; en; en = en->next) {
1526 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1527 en->duration, 0, en->size, en->pos,
1528 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1530 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1535 ff_hls_write_end_list(hls->sub_m3u8_out);
1540 av_dict_free(&options);
1541 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1545 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1546 if (use_temp_file) {
1547 ff_rename(temp_filename, vs->m3u8_name, s);
1548 if (vs->vtt_m3u8_name)
1549 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1551 if (ret >= 0 && hls->master_pl_name)
1552 if (create_master_playlist(s, vs) < 0)
1553 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1558 static int hls_start(AVFormatContext *s, VariantStream *vs)
1560 HLSContext *c = s->priv_data;
1561 AVFormatContext *oc = vs->avf;
1562 AVFormatContext *vtt_oc = vs->vtt_avf;
1563 AVDictionary *options = NULL;
1564 const char *proto = NULL;
1565 int use_temp_file = 0;
1566 char iv_string[KEYSIZE*2 + 1];
1569 if (c->flags & HLS_SINGLE_FILE) {
1570 char *new_name = av_strdup(vs->basename);
1572 return AVERROR(ENOMEM);
1573 ff_format_set_url(oc, new_name);
1574 if (vs->vtt_basename) {
1575 new_name = av_strdup(vs->vtt_basename);
1577 return AVERROR(ENOMEM);
1578 ff_format_set_url(vtt_oc, new_name);
1580 } else if (c->max_seg_size > 0) {
1581 char *filename = NULL;
1582 if (replace_int_data_in_filename(&filename,
1584 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1586 vs->basename, 'd', vs->sequence) < 1) {
1588 av_freep(&filename);
1589 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1590 return AVERROR(EINVAL);
1592 ff_format_set_url(oc, filename);
1594 if (c->use_localtime) {
1596 struct tm *tm, tmpbuf;
1597 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1598 char *buf = av_mallocz(bufsize);
1600 return AVERROR(ENOMEM);
1602 tm = localtime_r(&now0, &tmpbuf);
1603 ff_format_set_url(oc, buf);
1604 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1605 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1606 return AVERROR(EINVAL);
1609 err = sls_flag_use_localtime_filename(oc, c, vs);
1611 return AVERROR(ENOMEM);
1614 if (c->use_localtime_mkdir) {
1616 char *fn_copy = av_strdup(oc->url);
1617 dir = av_dirname(fn_copy);
1618 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1619 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1621 return AVERROR(errno);
1626 char *filename = NULL;
1627 if (replace_int_data_in_filename(&filename,
1629 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1631 vs->basename, 'd', vs->sequence) < 1) {
1633 av_freep(&filename);
1634 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1635 return AVERROR(EINVAL);
1637 ff_format_set_url(oc, filename);
1639 if ( vs->vtt_basename) {
1640 char *filename = NULL;
1641 if (replace_int_data_in_filename(&filename,
1643 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1645 vs->vtt_basename, 'd', vs->sequence) < 1) {
1647 av_freep(&filename);
1648 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1649 return AVERROR(EINVAL);
1651 ff_format_set_url(vtt_oc, filename);
1656 proto = avio_find_protocol_name(oc->url);
1657 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1659 if (use_temp_file) {
1660 char *new_name = av_asprintf("%s.tmp", oc->url);
1662 return AVERROR(ENOMEM);
1663 ff_format_set_url(oc, new_name);
1666 if (c->key_info_file || c->encrypt) {
1667 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1668 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1669 return AVERROR_PATCHWELCOME;
1672 if (c->key_info_file && c->encrypt) {
1673 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1674 " ignoring -hls_enc\n");
1677 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1678 if (c->key_info_file) {
1679 if ((err = hls_encryption_start(s)) < 0)
1682 if ((err = do_encrypt(s, vs)) < 0)
1685 c->encrypt_started = 1;
1687 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1689 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1690 memset(c->iv_string, 0, sizeof(c->iv_string));
1691 memcpy(c->iv_string, iv_string, sizeof(iv_string));
1694 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1695 /* We only require one PAT/PMT per segment. */
1696 if (oc->oformat->priv_class && oc->priv_data) {
1699 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1701 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1702 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1703 av_opt_set(oc->priv_data, "pat_period", period, 0);
1705 if (c->flags & HLS_SINGLE_FILE) {
1706 set_http_options(s, &options, c);
1707 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1708 if (c->ignore_io_errors)
1714 if (vs->vtt_basename) {
1715 set_http_options(s, &options, c);
1716 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1717 if (c->ignore_io_errors)
1722 av_dict_free(&options);
1724 if (vs->vtt_basename) {
1725 err = avformat_write_header(vtt_oc,NULL);
1732 av_dict_free(&options);
1737 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1740 time_t t = time(NULL);
1741 struct tm *p, tmbuf;
1742 HLSContext *hls = s->priv_data;
1744 p = localtime_r(&t, &tmbuf);
1745 // no %s support when strftime returned error or left format string unchanged
1746 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1747 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1748 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1750 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1753 static int append_postfix(char *name, int name_buf_len, int i)
1756 char extension[10] = {'\0'};
1758 p = strrchr(name, '.');
1760 av_strlcpy(extension, p, sizeof(extension));
1764 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1766 if (strlen(extension))
1767 av_strlcat(name, extension, name_buf_len);
1772 static int validate_name(int nb_vs, const char *fn)
1774 const char *filename, *subdir_name;
1775 char *fn_dup = NULL;
1779 ret = AVERROR(EINVAL);
1783 fn_dup = av_strdup(fn);
1784 filename = av_basename(fn);
1785 subdir_name = av_dirname(fn_dup);
1787 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1788 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1789 "either in the filename or in the sub-directory name of file %s\n", fn);
1790 ret = AVERROR(EINVAL);
1794 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1795 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1796 "in the sub-directory name of file %s, but only in one of them\n", fn);
1797 ret = AVERROR(EINVAL);
1806 static int format_name(const char *buf, char **s, int index, const char *varname)
1808 const char *proto, *dir;
1809 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1812 orig_buf_dup = av_strdup(buf);
1813 if (!orig_buf_dup) {
1814 ret = AVERROR(ENOMEM);
1818 if (!av_stristr(buf, "%v")) {
1824 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1825 ret = AVERROR(EINVAL);
1829 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1830 ret = AVERROR(EINVAL);
1835 proto = avio_find_protocol_name(orig_buf_dup);
1836 dir = av_dirname(orig_buf_dup);
1838 /* if %v is present in the file's directory, create sub-directory */
1839 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1840 mod_buf_dup = av_strdup(*s);
1841 dir = av_dirname(mod_buf_dup);
1842 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1843 ret = AVERROR(errno);
1849 av_freep(&orig_buf_dup);
1850 av_freep(&mod_buf_dup);
1854 static int get_nth_codec_stream_index(AVFormatContext *s,
1855 enum AVMediaType codec_type,
1858 unsigned int stream_index, cnt;
1859 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1862 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1863 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1865 if (cnt == stream_id)
1866 return stream_index;
1872 static int parse_variant_stream_mapstring(AVFormatContext *s)
1874 HLSContext *hls = s->priv_data;
1876 int stream_index, i, j;
1877 enum AVMediaType codec_type;
1878 int nb_varstreams = 0, nb_streams;
1879 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1883 * Expected format for var_stream_map string is as below:
1885 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1886 * This string specifies how to group the audio, video and subtitle streams
1887 * into different variant streams. The variant stream groups are separated
1890 * a:, v:, s: are keys to specify audio, video and subtitle streams
1891 * respectively. Allowed values are 0 to 9 digits (limited just based on
1894 * agroup: is key to specify audio group. A string can be given as value.
1896 p = av_strdup(hls->var_stream_map);
1898 return AVERROR(ENOMEM);
1901 while (av_strtok(q, " \t", &saveptr1)) {
1907 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1908 if (!hls->var_streams)
1909 return AVERROR(ENOMEM);
1910 hls->nb_varstreams = nb_varstreams;
1912 p = hls->var_stream_map;
1914 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1917 if (nb_varstreams < hls->nb_varstreams) {
1918 vs = &(hls->var_streams[nb_varstreams]);
1919 vs->var_stream_idx = nb_varstreams;
1923 return AVERROR(EINVAL);
1926 while (q < varstr + strlen(varstr)) {
1927 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1928 !av_strncasecmp(q, "s:", 2))
1932 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1934 return AVERROR(ENOMEM);
1937 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1939 if (av_strstart(keyval, "language:", &val)) {
1940 vs->language = av_strdup(val);
1942 return AVERROR(ENOMEM);
1944 } else if (av_strstart(keyval, "default:", &val)) {
1945 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1946 (!av_strncasecmp(val, "1", strlen("1"))));
1947 hls->has_default_key = 1;
1949 } else if (av_strstart(keyval, "name:", &val)) {
1950 vs->varname = av_strdup(val);
1952 return AVERROR(ENOMEM);
1954 } else if (av_strstart(keyval, "agroup:", &val)) {
1955 vs->agroup = av_strdup(val);
1957 return AVERROR(ENOMEM);
1959 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1960 vs->ccgroup = av_strdup(val);
1962 return AVERROR(ENOMEM);
1964 } else if (av_strstart(keyval, "v:", &val)) {
1965 codec_type = AVMEDIA_TYPE_VIDEO;
1966 hls->has_video_m3u8 = 1;
1967 } else if (av_strstart(keyval, "a:", &val)) {
1968 codec_type = AVMEDIA_TYPE_AUDIO;
1969 } else if (av_strstart(keyval, "s:", &val)) {
1970 codec_type = AVMEDIA_TYPE_SUBTITLE;
1972 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1973 return AVERROR(EINVAL);
1977 if (av_isdigit(*val))
1978 stream_index = get_nth_codec_stream_index (s, codec_type,
1981 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1982 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
1983 if (vs->streams[i] == s->streams[stream_index]) {
1984 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
1985 "variant definition #%d\n", nb_varstreams - 1);
1986 return AVERROR(EINVAL);
1989 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
1990 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
1991 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
1992 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
1993 "in two different variant definitions #%d and #%d\n",
1994 j, nb_varstreams - 1);
1995 return AVERROR(EINVAL);
1999 vs->streams[nb_streams++] = s->streams[stream_index];
2001 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2002 return AVERROR(EINVAL);
2006 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2007 hls->nb_varstreams);
2012 static int parse_cc_stream_mapstring(AVFormatContext *s)
2014 HLSContext *hls = s->priv_data;
2015 int nb_ccstreams = 0;
2016 char *p, *q, *ccstr, *keyval;
2017 char *saveptr1 = NULL, *saveptr2 = NULL;
2019 ClosedCaptionsStream *ccs;
2021 p = av_strdup(hls->cc_stream_map);
2023 return AVERROR(ENOMEM);
2026 while (av_strtok(q, " \t", &saveptr1)) {
2032 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2033 if (!hls->cc_streams)
2034 return AVERROR(ENOMEM);
2035 hls->nb_ccstreams = nb_ccstreams;
2037 p = hls->cc_stream_map;
2039 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2042 if (nb_ccstreams < hls->nb_ccstreams)
2043 ccs = &(hls->cc_streams[nb_ccstreams++]);
2045 return AVERROR(EINVAL);
2047 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2050 if (av_strstart(keyval, "ccgroup:", &val)) {
2051 ccs->ccgroup = av_strdup(val);
2053 return AVERROR(ENOMEM);
2054 } else if (av_strstart(keyval, "instreamid:", &val)) {
2055 ccs->instreamid = av_strdup(val);
2056 if (!ccs->instreamid)
2057 return AVERROR(ENOMEM);
2058 } else if (av_strstart(keyval, "language:", &val)) {
2059 ccs->language = av_strdup(val);
2061 return AVERROR(ENOMEM);
2063 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2064 return AVERROR(EINVAL);
2068 if (!ccs->ccgroup || !ccs->instreamid) {
2069 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2070 return AVERROR(EINVAL);
2073 if (av_strstart(ccs->instreamid, "CC", &val)) {
2074 if (atoi(val) < 1 || atoi(val) > 4) {
2075 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2076 atoi(val), ccs->instreamid);
2077 return AVERROR(EINVAL);
2079 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2080 if (atoi(val) < 1 || atoi(val) > 63) {
2081 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2082 atoi(val), ccs->instreamid);
2083 return AVERROR(EINVAL);
2086 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2088 return AVERROR(EINVAL);
2095 static int update_variant_stream_info(AVFormatContext *s)
2097 HLSContext *hls = s->priv_data;
2101 if (hls->cc_stream_map) {
2102 ret = parse_cc_stream_mapstring(s);
2107 if (hls->var_stream_map) {
2108 return parse_variant_stream_mapstring(s);
2110 //By default, a single variant stream with all the codec streams is created
2111 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2112 if (!hls->var_streams)
2113 return AVERROR(ENOMEM);
2114 hls->nb_varstreams = 1;
2116 hls->var_streams[0].var_stream_idx = 0;
2117 hls->var_streams[0].nb_streams = s->nb_streams;
2118 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2119 hls->var_streams[0].nb_streams);
2120 if (!hls->var_streams[0].streams) {
2121 return AVERROR(ENOMEM);
2124 //by default, the first available ccgroup is mapped to the variant stream
2125 if (hls->nb_ccstreams) {
2126 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2127 if (!hls->var_streams[0].ccgroup) {
2128 return AVERROR(ENOMEM);
2132 for (i = 0; i < s->nb_streams; i++)
2133 hls->var_streams[0].streams[i] = s->streams[i];
2138 static int update_master_pl_info(AVFormatContext *s)
2140 HLSContext *hls = s->priv_data;
2142 char *fn1= NULL, *fn2 = NULL;
2145 fn1 = av_strdup(s->url);
2146 dir = av_dirname(fn1);
2149 * if output file's directory has %v, variants are created in sub-directories
2150 * then master is created at the sub-directories level
2152 if (dir && av_stristr(av_basename(dir), "%v")) {
2153 fn2 = av_strdup(dir);
2154 dir = av_dirname(fn2);
2157 if (dir && strcmp(dir, "."))
2158 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2160 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2162 if (!hls->master_m3u8_url) {
2163 ret = AVERROR(ENOMEM);
2174 static int hls_write_header(AVFormatContext *s)
2176 HLSContext *hls = s->priv_data;
2178 VariantStream *vs = NULL;
2180 for (i = 0; i < hls->nb_varstreams; i++) {
2181 vs = &hls->var_streams[i];
2183 ret = avformat_write_header(vs->avf, NULL);
2186 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2187 for (j = 0; j < vs->nb_streams; j++) {
2189 AVStream *outer_st = vs->streams[j];
2191 if (hls->max_seg_size > 0) {
2192 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2193 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2194 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2195 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2196 outer_st->codecpar->bit_rate, hls->max_seg_size);
2200 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2201 inner_st = vs->avf->streams[j];
2202 else if (vs->vtt_avf)
2203 inner_st = vs->vtt_avf->streams[0];
2205 /* We have a subtitle stream, when the user does not want one */
2209 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2210 write_codec_attr(outer_st, vs);
2213 /* Update the Codec Attr string for the mapped audio groups */
2214 if (vs->has_video && vs->agroup) {
2215 for (j = 0; j < hls->nb_varstreams; j++) {
2216 VariantStream *vs_agroup = &(hls->var_streams[j]);
2217 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2218 vs_agroup->agroup &&
2219 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2220 write_codec_attr(vs_agroup->streams[0], vs);
2229 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2231 HLSContext *hls = s->priv_data;
2232 AVFormatContext *oc = NULL;
2233 AVStream *st = s->streams[pkt->stream_index];
2234 int64_t end_pts = 0;
2236 int ret = 0, can_split = 1, i, j;
2237 int stream_index = 0;
2238 int range_length = 0;
2239 const char *proto = NULL;
2240 int use_temp_file = 0;
2241 uint8_t *buffer = NULL;
2242 VariantStream *vs = NULL;
2243 char *old_filename = NULL;
2245 for (i = 0; i < hls->nb_varstreams; i++) {
2246 vs = &hls->var_streams[i];
2247 for (j = 0; j < vs->nb_streams; j++) {
2248 if (vs->streams[j] == st) {
2249 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2265 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2266 return AVERROR(ENOMEM);
2269 end_pts = hls->recording_time * vs->number;
2271 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2272 /* reset end_pts, hls->recording_time at end of the init hls list */
2273 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2274 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2275 hls->recording_time = hls->time * AV_TIME_BASE;
2276 end_pts = init_list_dur + after_init_list_dur ;
2279 if (vs->start_pts == AV_NOPTS_VALUE) {
2280 vs->start_pts = pkt->pts;
2283 if (vs->has_video) {
2284 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2285 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2286 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2288 if (pkt->pts == AV_NOPTS_VALUE)
2289 is_ref_pkt = can_split = 0;
2292 if (vs->end_pts == AV_NOPTS_VALUE)
2293 vs->end_pts = pkt->pts;
2294 if (vs->new_start) {
2296 vs->duration = (double)(pkt->pts - vs->end_pts)
2297 * st->time_base.num / st->time_base.den;
2298 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2300 if (pkt->duration) {
2301 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2303 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2304 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2310 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2311 end_pts, AV_TIME_BASE_Q) >= 0) {
2312 int64_t new_start_pos;
2313 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2315 av_write_frame(oc, NULL); /* Flush any buffered data */
2316 new_start_pos = avio_tell(oc->pb);
2317 vs->size = new_start_pos - vs->start_pos;
2319 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2320 if (!vs->init_range_length) {
2321 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2322 avio_write(vs->out, buffer, range_length);
2324 vs->init_range_length = range_length;
2325 avio_open_dyn_buf(&oc->pb);
2326 vs->packets_written = 0;
2327 vs->start_pos = range_length;
2328 if (!byterange_mode) {
2329 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2333 if (!byterange_mode) {
2335 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2340 proto = avio_find_protocol_name(oc->url);
2341 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2344 if (hls->flags & HLS_SINGLE_FILE) {
2345 ret = flush_dynbuf(vs, &range_length);
2346 av_freep(&vs->temp_buffer);
2350 vs->size = range_length;
2352 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2353 AVDictionary *options = NULL;
2354 char *filename = NULL;
2355 if (hls->key_info_file || hls->encrypt) {
2356 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2357 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2358 filename = av_asprintf("crypto:%s", oc->url);
2360 filename = av_asprintf("%s", oc->url);
2363 av_dict_free(&options);
2364 return AVERROR(ENOMEM);
2367 // look to rename the asset name
2369 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2371 set_http_options(s, &options, hls);
2373 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2375 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2376 "Failed to open file '%s'\n", filename);
2377 av_dict_free(&options);
2378 return hls->ignore_io_errors ? 0 : ret;
2380 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2381 write_styp(vs->out);
2383 ret = flush_dynbuf(vs, &range_length);
2385 av_dict_free(&options);
2388 ret = hlsenc_io_close(s, &vs->out, filename);
2390 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2391 " will retry with a new http session.\n");
2392 ff_format_io_close(s, &vs->out);
2393 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2394 reflush_dynbuf(vs, &range_length);
2395 ret = hlsenc_io_close(s, &vs->out, filename);
2397 av_dict_free(&options);
2398 av_freep(&vs->temp_buffer);
2399 av_freep(&filename);
2403 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2404 hls_rename_temp_file(s, oc);
2407 old_filename = av_strdup(oc->url);
2408 if (!old_filename) {
2409 return AVERROR(ENOMEM);
2412 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2413 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2414 vs->end_pts = pkt->pts;
2417 av_freep(&old_filename);
2422 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2423 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2424 if ((ret = hls_window(s, 0, vs)) < 0) {
2425 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2426 ff_format_io_close(s, &vs->out);
2428 if ((ret = hls_window(s, 0, vs)) < 0) {
2429 av_freep(&old_filename);
2435 if (hls->flags & HLS_SINGLE_FILE) {
2437 vs->start_pos += vs->size;
2438 } else if (hls->max_seg_size > 0) {
2439 vs->start_pos = new_start_pos;
2440 if (vs->size >= hls->max_seg_size) {
2442 sls_flag_file_rename(hls, vs, old_filename);
2443 ret = hls_start(s, vs);
2445 /* When split segment by byte, the duration is short than hls_time,
2446 * so it is not enough one segment duration as hls_time, */
2451 vs->start_pos = new_start_pos;
2452 sls_flag_file_rename(hls, vs, old_filename);
2453 ret = hls_start(s, vs);
2455 av_freep(&old_filename);
2463 vs->packets_written++;
2465 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2466 vs->video_keyframe_size += pkt->size;
2467 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2468 vs->video_keyframe_size = avio_tell(oc->pb);
2470 vs->video_keyframe_pos = avio_tell(vs->out);
2472 if (hls->ignore_io_errors)
2479 static void hls_free_variant_streams(struct HLSContext *hls)
2482 AVFormatContext *vtt_oc = NULL;
2483 VariantStream *vs = NULL;
2485 for (i = 0; i < hls->nb_varstreams; i++) {
2486 vs = &hls->var_streams[i];
2487 vtt_oc = vs->vtt_avf;
2489 av_freep(&vs->basename);
2490 av_freep(&vs->base_output_dirname);
2491 av_freep(&vs->fmp4_init_filename);
2493 av_freep(&vs->vtt_basename);
2494 av_freep(&vs->vtt_m3u8_name);
2495 avformat_free_context(vtt_oc);
2498 avformat_free_context(vs->avf);
2500 hls_free_segments(vs->segments);
2501 hls_free_segments(vs->old_segments);
2502 av_freep(&vs->m3u8_name);
2503 av_freep(&vs->streams);
2504 av_freep(&vs->agroup);
2505 av_freep(&vs->language);
2506 av_freep(&vs->ccgroup);
2507 av_freep(&vs->baseurl);
2508 av_freep(&vs->varname);
2512 static int hls_write_trailer(struct AVFormatContext *s)
2514 HLSContext *hls = s->priv_data;
2515 AVFormatContext *oc = NULL;
2516 AVFormatContext *vtt_oc = NULL;
2517 char *old_filename = NULL;
2518 const char *proto = NULL;
2519 int use_temp_file = 0;
2522 VariantStream *vs = NULL;
2523 AVDictionary *options = NULL;
2524 int range_length, byterange_mode;
2526 for (i = 0; i < hls->nb_varstreams; i++) {
2527 char *filename = NULL;
2528 vs = &hls->var_streams[i];
2530 vtt_oc = vs->vtt_avf;
2531 old_filename = av_strdup(oc->url);
2534 if (!old_filename) {
2535 return AVERROR(ENOMEM);
2537 if (hls->key_info_file || hls->encrypt) {
2538 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2539 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2540 filename = av_asprintf("crypto:%s", oc->url);
2542 filename = av_asprintf("%s", oc->url);
2545 av_freep(&old_filename);
2546 return AVERROR(ENOMEM);
2549 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2550 int range_length = 0;
2551 if (!vs->init_range_length) {
2552 uint8_t *buffer = NULL;
2553 av_write_frame(oc, NULL); /* Flush any buffered data */
2556 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2557 avio_write(vs->out, buffer, range_length);
2559 vs->init_range_length = range_length;
2560 avio_open_dyn_buf(&oc->pb);
2561 vs->packets_written = 0;
2562 vs->start_pos = range_length;
2563 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2564 if (!byterange_mode) {
2565 ff_format_io_close(s, &vs->out);
2566 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2570 if (!(hls->flags & HLS_SINGLE_FILE)) {
2571 set_http_options(s, &options, hls);
2572 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2574 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2577 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2578 write_styp(vs->out);
2580 ret = flush_dynbuf(vs, &range_length);
2584 vs->size = range_length;
2585 hlsenc_io_close(s, &vs->out, filename);
2586 ret = hlsenc_io_close(s, &vs->out, filename);
2588 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2589 ff_format_io_close(s, &vs->out);
2590 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2592 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2595 reflush_dynbuf(vs, &range_length);
2596 ret = hlsenc_io_close(s, &vs->out, filename);
2598 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2600 av_freep(&vs->temp_buffer);
2603 av_freep(&filename);
2604 av_write_trailer(oc);
2606 proto = avio_find_protocol_name(oc->url);
2607 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2610 // rename that segment from .tmp to the real one
2611 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2612 hls_rename_temp_file(s, oc);
2613 av_freep(&old_filename);
2614 old_filename = av_strdup(oc->url);
2616 if (!old_filename) {
2617 return AVERROR(ENOMEM);
2621 /* after av_write_trailer, then duration + 1 duration per packet */
2622 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2624 sls_flag_file_rename(hls, vs, old_filename);
2628 av_write_trailer(vtt_oc);
2629 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2630 ff_format_io_close(s, &vtt_oc->pb);
2632 ret = hls_window(s, 1, vs);
2634 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2635 ff_format_io_close(s, &vs->out);
2636 hls_window(s, 1, vs);
2638 ffio_free_dyn_buf(&oc->pb);
2640 av_free(old_filename);
2643 hls_free_variant_streams(hls);
2645 for (i = 0; i < hls->nb_ccstreams; i++) {
2646 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2647 av_freep(&ccs->ccgroup);
2648 av_freep(&ccs->instreamid);
2649 av_freep(&ccs->language);
2652 ff_format_io_close(s, &hls->m3u8_out);
2653 ff_format_io_close(s, &hls->sub_m3u8_out);
2654 av_freep(&hls->key_basename);
2655 av_freep(&hls->var_streams);
2656 av_freep(&hls->cc_streams);
2657 av_freep(&hls->master_m3u8_url);
2662 static int hls_init(AVFormatContext *s)
2667 HLSContext *hls = s->priv_data;
2668 const char *pattern = "%d.ts";
2669 VariantStream *vs = NULL;
2670 int basename_size = 0;
2671 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2672 const char *vtt_pattern = "%d.vtt";
2674 int vtt_basename_size = 0;
2675 int http_base_proto = ff_is_http_proto(s->url);
2676 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2678 hls->has_default_key = 0;
2679 hls->has_video_m3u8 = 0;
2680 ret = update_variant_stream_info(s);
2682 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2686 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2687 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2688 ret = AVERROR(EINVAL);
2689 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2693 if (!hls->method && http_base_proto) {
2694 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2697 ret = validate_name(hls->nb_varstreams, s->url);
2701 if (hls->segment_filename) {
2702 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2707 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2708 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2713 if (hls->subtitle_filename) {
2714 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2719 if (hls->master_pl_name) {
2720 ret = update_master_pl_info(s);
2722 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2728 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2731 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2732 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2733 time_t t = time(NULL); // we will need it in either case
2734 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2735 hls->start_sequence = (int64_t)t;
2736 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2738 struct tm *p, tmbuf;
2739 if (!(p = localtime_r(&t, &tmbuf)))
2740 return AVERROR(ENOMEM);
2741 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2742 return AVERROR(ENOMEM);
2743 hls->start_sequence = strtoll(b, NULL, 10);
2745 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2748 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2749 for (i = 0; i < hls->nb_varstreams; i++) {
2750 vs = &hls->var_streams[i];
2752 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2756 vs->sequence = hls->start_sequence;
2757 vs->start_pts = AV_NOPTS_VALUE;
2758 vs->end_pts = AV_NOPTS_VALUE;
2759 vs->current_segment_final_filename_fmt[0] = '\0';
2761 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2762 // Independent segments cannot be guaranteed when splitting by time
2763 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2764 av_log(s, AV_LOG_WARNING,
2765 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2766 "Disabling 'independent_segments' flag\n");
2769 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2772 vs->initial_prog_date_time = now0;
2774 if (hls->format_options_str) {
2775 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2777 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2782 for (j = 0; j < vs->nb_streams; j++) {
2783 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2784 /* Get one video stream to reference for split segments
2785 * so use the first video stream index. */
2786 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2787 vs->reference_stream_index = vs->streams[j]->index;
2789 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2792 if (vs->has_video > 1)
2793 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2794 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2795 vs->oformat = av_guess_format("mp4", NULL, NULL);
2797 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2801 ret = AVERROR_MUXER_NOT_FOUND;
2805 if (vs->has_subtitle) {
2806 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2808 ret = AVERROR_MUXER_NOT_FOUND;
2812 if (hls->segment_filename) {
2813 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2817 if (hls->flags & HLS_SINGLE_FILE) {
2818 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2825 if (hls->use_localtime) {
2826 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2828 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2831 vs->basename = av_malloc(basename_size);
2832 if (!vs->basename) {
2833 ret = AVERROR(ENOMEM);
2837 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2839 p = strrchr(vs->basename, '.');
2842 if (hls->use_localtime) {
2843 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2845 av_strlcat(vs->basename, pattern, basename_size);
2849 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2850 if (hls->nb_varstreams > 1)
2851 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2852 if (hls->flags & HLS_SINGLE_FILE) {
2853 vs->fmp4_init_filename = av_strdup(vs->basename);
2854 if (!vs->fmp4_init_filename) {
2855 ret = AVERROR(ENOMEM);
2859 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2860 if (!vs->fmp4_init_filename ) {
2861 ret = AVERROR(ENOMEM);
2864 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2865 fmp4_init_filename_len);
2866 if (hls->nb_varstreams > 1) {
2867 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2868 av_freep(&vs->fmp4_init_filename);
2869 format_name(hls->fmp4_init_filename, &vs->fmp4_init_filename, i, vs->varname);
2871 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2877 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2878 strlen(vs->fmp4_init_filename) + 1;
2880 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2881 if (!vs->base_output_dirname) {
2882 ret = AVERROR(ENOMEM);
2886 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2887 fmp4_init_filename_len);
2888 p = strrchr(vs->base_output_dirname, '/');
2891 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2892 fmp4_init_filename_len);
2894 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2895 fmp4_init_filename_len);
2900 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2904 if (vs->has_subtitle) {
2906 if (hls->flags & HLS_SINGLE_FILE)
2907 vtt_pattern = ".vtt";
2908 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2910 vs->vtt_basename = av_malloc(vtt_basename_size);
2911 if (!vs->vtt_basename) {
2912 ret = AVERROR(ENOMEM);
2915 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2916 p = strrchr(vs->vtt_basename, '.');
2920 if ( hls->subtitle_filename ) {
2921 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2925 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2926 if (!vs->vtt_m3u8_name) {
2927 ret = AVERROR(ENOMEM);
2930 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2931 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2933 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2937 vs->baseurl = av_strdup(hls->baseurl);
2939 ret = AVERROR(ENOMEM);
2944 if ((ret = hls_mux_init(s, vs)) < 0)
2947 if (hls->flags & HLS_APPEND_LIST) {
2948 parse_playlist(s, vs->m3u8_name, vs);
2949 vs->discontinuity = 1;
2950 if (hls->init_time > 0) {
2951 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2952 " hls_init_time value will have no effect\n");
2954 hls->recording_time = hls->time * AV_TIME_BASE;
2958 if ((ret = hls_start(s, vs)) < 0)
2964 hls_free_variant_streams(hls);
2965 for (i = 0; i < hls->nb_ccstreams; i++) {
2966 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2967 av_freep(&ccs->ccgroup);
2968 av_freep(&ccs->instreamid);
2969 av_freep(&ccs->language);
2971 av_freep(&hls->key_basename);
2972 av_freep(&hls->var_streams);
2973 av_freep(&hls->cc_streams);
2974 av_freep(&hls->master_m3u8_url);
2980 #define OFFSET(x) offsetof(HLSContext, x)
2981 #define E AV_OPT_FLAG_ENCODING_PARAM
2982 static const AVOption options[] = {
2983 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2984 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2985 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2986 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2987 {"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},
2988 {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2989 {"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},
2991 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2993 {"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},
2994 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2995 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2996 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2997 {"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},
2998 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2999 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3000 {"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},
3001 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3002 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3003 {"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"},
3004 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3005 {"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"},
3006 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3007 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3008 {"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"},
3009 {"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"},
3010 {"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"},
3011 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3012 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3013 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3014 {"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"},
3015 {"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"},
3016 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3017 {"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"},
3018 {"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"},
3019 {"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"},
3020 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3021 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3022 {"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"},
3023 #if FF_API_HLS_USE_LOCALTIME
3024 {"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 },
3026 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3027 #if FF_API_HLS_USE_LOCALTIME
3028 {"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 },
3030 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3031 {"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" },
3032 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3033 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3034 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3035 {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
3036 {"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" },
3037 {"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" },
3038 {"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" },
3039 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3040 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3041 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3042 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3043 {"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},
3044 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3045 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3046 {"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 },
3047 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3051 static const AVClass hls_class = {
3052 .class_name = "hls muxer",
3053 .item_name = av_default_item_name,
3055 .version = LIBAVUTIL_VERSION_INT,
3059 AVOutputFormat ff_hls_muxer = {
3061 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3062 .extensions = "m3u8",
3063 .priv_data_size = sizeof(HLSContext),
3064 .audio_codec = AV_CODEC_ID_AAC,
3065 .video_codec = AV_CODEC_ID_H264,
3066 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3067 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3069 .write_header = hls_write_header,
3070 .write_packet = hls_write_packet,
3071 .write_trailer = hls_write_trailer,
3072 .priv_class = &hls_class,