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 int start_pts_from_audio;
130 double dpp; // duration per packet
133 int64_t video_lastpos;
134 int64_t video_keyframe_pos;
135 int64_t video_keyframe_size;
136 double duration; // last segment duration computed so far, in seconds
137 int64_t start_pos; // last segment starting position
138 int64_t size; // last segment size
140 int discontinuity_set;
142 int reference_stream_index;
144 HLSSegment *segments;
145 HLSSegment *last_segment;
146 HLSSegment *old_segments;
153 double initial_prog_date_time;
154 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
156 char *fmp4_init_filename;
157 char *base_output_dirname;
160 char codec_attr[128];
161 CodecAttributeStatus attr_status;
162 unsigned int nb_streams;
163 int m3u8_created; /* status of media play-list creation */
164 int is_default; /* default status of audio group */
165 char *language; /* audio lauguage name */
166 char *agroup; /* audio group name */
167 char *ccgroup; /* closed caption group name */
169 char *varname; // variant name
172 typedef struct ClosedCaptionsStream {
173 char *ccgroup; /* closed caption group name */
174 char *instreamid; /* closed captions INSTREAM-ID */
175 char *language; /* closed captions langauge */
176 } ClosedCaptionsStream;
178 typedef struct HLSContext {
179 const AVClass *class; // Class for private options.
180 int64_t start_sequence;
181 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
183 float time; // Set by a private option.
184 float init_time; // Set by a private option.
185 int max_nb_segments; // Set by a private option.
186 int hls_delete_threshold; // Set by a private option.
188 int wrap; // Set by a private option.
190 uint32_t flags; // enum HLSFlags
191 uint32_t pl_type; // enum PlaylistType
192 char *segment_filename;
193 char *fmp4_init_filename;
196 int use_localtime; ///< flag to expand filename with localtime
197 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
199 int64_t recording_time;
200 int64_t max_seg_size; // every segment file max size
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);
465 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
467 avio_write(vs->out, vs->temp_buffer, *range_length);
471 return avio_open_dyn_buf(&ctx->pb);
474 static void reflush_dynbuf(VariantStream *vs, int *range_length)
477 avio_write(vs->out, vs->temp_buffer, *range_length);
481 #define SEPARATOR '\\'
483 #define SEPARATOR '/'
486 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
490 HLSSegment *segment, *previous_segment = NULL;
491 float playlist_duration = 0.0f;
492 int ret = 0, path_size, sub_path_size;
494 char *dirname = NULL, *sub_path;
495 char *dirname_r = NULL;
496 char *dirname_repl = NULL;
498 char *vtt_dirname = NULL;
499 char *vtt_dirname_r = NULL;
500 AVDictionary *options = NULL;
501 AVIOContext *out = NULL;
502 const char *proto = NULL;
504 segment = vs->segments;
506 playlist_duration += segment->duration;
507 segment = segment->next;
510 segment = vs->old_segments;
513 playlist_duration -= segment->duration;
514 previous_segment = segment;
515 segment = previous_segment->next;
517 if (playlist_duration <= -previous_segment->duration) {
518 previous_segment->next = NULL;
521 if (segment_cnt >= hls->hls_delete_threshold) {
522 previous_segment->next = NULL;
527 if (segment && !hls->use_localtime_mkdir) {
528 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
529 dirname = (char*)av_dirname(dirname_r);
532 /* if %v is present in the file's directory
533 * all segment belongs to the same variant, so do it only once before the loop*/
534 if (dirname && av_stristr(dirname, "%v")) {
535 char * dirname_repl = dirname;
537 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
538 ret = AVERROR(EINVAL);
542 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
543 ret = AVERROR(EINVAL);
548 dirname = dirname_repl;
552 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
554 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)+1) + strlen(segment->filename) + 1;
555 path = av_malloc(path_size);
557 ret = AVERROR(ENOMEM);
561 if (hls->use_localtime_mkdir)
562 av_strlcpy(path, segment->filename, path_size);
563 else { // segment->filename contains basename only
564 snprintf(path, path_size, "%s%c%s", dirname, SEPARATOR, segment->filename);
567 proto = avio_find_protocol_name(s->url);
568 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
569 av_dict_set(&options, "method", "DELETE", 0);
570 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
571 if (hls->ignore_io_errors)
575 ff_format_io_close(vs->avf, &out);
576 } else if (unlink(path) < 0) {
577 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
578 path, strerror(errno));
581 if ((segment->sub_filename[0] != '\0')) {
582 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
583 vtt_dirname = (char*)av_dirname(vtt_dirname_r);
584 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname) + 1;
585 sub_path = av_malloc(sub_path_size);
587 ret = AVERROR(ENOMEM);
591 snprintf(sub_path, sub_path_size, "%s%c%s", vtt_dirname, SEPARATOR, segment->sub_filename);
593 av_freep(&vtt_dirname_r);
595 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
596 av_dict_set(&options, "method", "DELETE", 0);
597 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
598 if (hls->ignore_io_errors)
603 ff_format_io_close(vs->vtt_avf, &out);
604 } else if (unlink(sub_path) < 0) {
605 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
606 sub_path, strerror(errno));
611 previous_segment = segment;
612 segment = previous_segment->next;
613 av_freep(&previous_segment);
618 av_freep(&dirname_r);
619 av_freep(&dirname_repl);
620 av_freep(&vtt_dirname_r);
625 static int randomize(uint8_t *buf, int len)
628 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
631 if (RAND_bytes(buf, len))
634 return AVERROR(ENOSYS);
636 return AVERROR(EINVAL);
639 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
641 HLSContext *hls = s->priv_data;
645 uint8_t key[KEYSIZE];
646 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
648 len = strlen(key_basename_source) + 4 + 1;
649 hls->key_basename = av_mallocz(len);
650 if (!hls->key_basename)
651 return AVERROR(ENOMEM);
653 av_strlcpy(hls->key_basename, key_basename_source, 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);
768 int remaining_options;
771 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
776 oc->url = av_strdup("");
778 return AVERROR(ENOMEM);
780 oc->oformat = vs->oformat;
781 oc->interrupt_callback = s->interrupt_callback;
782 oc->max_delay = s->max_delay;
783 oc->opaque = s->opaque;
784 oc->io_open = s->io_open;
785 oc->io_close = s->io_close;
786 oc->strict_std_compliance = s->strict_std_compliance;
787 av_dict_copy(&oc->metadata, s->metadata, 0);
789 if (vs->vtt_oformat) {
790 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
793 vtt_oc = vs->vtt_avf;
794 vtt_oc->oformat = vs->vtt_oformat;
795 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
798 for (i = 0; i < vs->nb_streams; i++) {
800 AVFormatContext *loc;
801 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
806 if (!(st = avformat_new_stream(loc, NULL)))
807 return AVERROR(ENOMEM);
808 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
809 if (!oc->oformat->codec_tag ||
810 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
811 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
812 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
814 st->codecpar->codec_tag = 0;
817 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
818 st->time_base = vs->streams[i]->time_base;
819 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
822 vs->packets_written = 1;
826 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
827 if (hls->http_persistent > 0) {
828 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
829 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
831 if (hls->max_seg_size > 0) {
832 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
833 return AVERROR_PATCHWELCOME;
837 vs->packets_written = 0;
838 vs->init_range_length = 0;
840 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
843 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
844 set_http_options(s, &options, hls);
845 if (byterange_mode) {
846 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
848 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
850 av_dict_free(&options);
853 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
857 av_dict_copy(&options, hls->format_options, 0);
858 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
859 av_dict_set(&options, "fflags", "-autobsf", 0);
860 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
862 /* We only require one PAT/PMT per segment. */
864 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
865 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
866 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
868 ret = avformat_init_output(oc, &options);
869 remaining_options = av_dict_count(options);
870 av_dict_free(&options);
873 if (remaining_options) {
874 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
875 return AVERROR(EINVAL);
881 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
884 if (!av_strcasecmp(segment->filename,filename))
886 segment = segment->next;
888 return (HLSSegment *) NULL;
891 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
892 VariantStream *vs, HLSSegment *en,
893 double duration, int64_t pos, int64_t size)
895 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
896 strlen(vs->current_segment_final_filename_fmt)) {
897 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
899 return AVERROR(ENOMEM);
901 ff_format_set_url(vs->avf, new_url);
902 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
903 char *filename = NULL;
904 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
905 av_log(hls, AV_LOG_ERROR,
906 "Invalid second level segment filename template '%s', "
907 "you can try to remove second_level_segment_size flag\n",
910 return AVERROR(EINVAL);
912 ff_format_set_url(vs->avf, filename);
914 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
915 char *filename = NULL;
916 if (replace_int_data_in_filename(&filename, vs->avf->url,
917 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
918 av_log(hls, AV_LOG_ERROR,
919 "Invalid second level segment filename template '%s', "
920 "you can try to remove second_level_segment_time flag\n",
923 return AVERROR(EINVAL);
925 ff_format_set_url(vs->avf, filename);
931 static int sls_flag_check_duration_size_index(HLSContext *hls)
935 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
936 av_log(hls, AV_LOG_ERROR,
937 "second_level_segment_duration hls_flag requires strftime to be true\n");
938 ret = AVERROR(EINVAL);
940 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
941 av_log(hls, AV_LOG_ERROR,
942 "second_level_segment_size hls_flag requires strfime to be true\n");
943 ret = AVERROR(EINVAL);
945 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
946 av_log(hls, AV_LOG_ERROR,
947 "second_level_segment_index hls_flag requires strftime to be true\n");
948 ret = AVERROR(EINVAL);
954 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
956 const char *proto = avio_find_protocol_name(vs->basename);
957 int segment_renaming_ok = proto && !strcmp(proto, "file");
960 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
961 av_log(hls, AV_LOG_ERROR,
962 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
963 ret = AVERROR(EINVAL);
965 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
966 av_log(hls, AV_LOG_ERROR,
967 "second_level_segment_size hls_flag works only with file protocol segment names\n");
968 ret = AVERROR(EINVAL);
974 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
975 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
976 strlen(vs->current_segment_final_filename_fmt)) {
977 ff_rename(old_filename, vs->avf->url, hls);
981 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
983 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
984 char *filename = NULL;
985 if (replace_int_data_in_filename(&filename,
987 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
989 oc->url, 'd', vs->sequence) < 1) {
991 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
992 "you can try to remove second_level_segment_index flag\n",
995 return AVERROR(EINVAL);
997 ff_format_set_url(oc, filename);
999 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1000 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1001 sizeof(vs->current_segment_final_filename_fmt));
1002 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1003 char *filename = NULL;
1004 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1005 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1006 "you can try to remove second_level_segment_size flag\n",
1008 av_freep(&filename);
1009 return AVERROR(EINVAL);
1011 ff_format_set_url(oc, filename);
1013 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1014 char *filename = NULL;
1015 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1016 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1017 "you can try to remove second_level_segment_time flag\n",
1019 av_freep(&filename);
1020 return AVERROR(EINVAL);
1022 ff_format_set_url(oc, filename);
1028 /* Create a new segment and append it to the segment list */
1029 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1030 VariantStream *vs, double duration, int64_t pos,
1033 HLSSegment *en = av_malloc(sizeof(*en));
1034 const char *filename;
1035 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1039 return AVERROR(ENOMEM);
1041 en->var_stream_idx = vs->var_stream_idx;
1042 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1048 filename = av_basename(vs->avf->url);
1050 if (hls->use_localtime_mkdir) {
1051 filename = vs->avf->url;
1053 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1054 && !byterange_mode) {
1055 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1057 av_strlcpy(en->filename, filename, sizeof(en->filename));
1059 if (vs->has_subtitle)
1060 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1062 en->sub_filename[0] = '\0';
1064 en->duration = duration;
1067 en->keyframe_pos = vs->video_keyframe_pos;
1068 en->keyframe_size = vs->video_keyframe_size;
1072 if (vs->discontinuity) {
1074 vs->discontinuity = 0;
1077 if (hls->key_info_file || hls->encrypt) {
1078 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1079 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1085 vs->last_segment->next = en;
1087 vs->last_segment = en;
1089 // EVENT or VOD playlists imply sliding window cannot be used
1090 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1091 hls->max_nb_segments = 0;
1093 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1095 vs->initial_prog_date_time += en->duration;
1096 vs->segments = en->next;
1097 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1099 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1101 !(hls->flags & HLS_SINGLE_FILE)) {
1103 en->next = vs->old_segments;
1104 vs->old_segments = en;
1105 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1112 if (hls->max_seg_size > 0) {
1120 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1122 HLSContext *hls = s->priv_data;
1124 int ret = 0, is_segment = 0;
1125 int64_t new_start_pos;
1126 char line[MAX_URL_SIZE];
1130 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1131 &s->interrupt_callback, NULL,
1132 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1135 ff_get_chomp_line(in, line, sizeof(line));
1136 if (strcmp(line, "#EXTM3U")) {
1137 ret = AVERROR_INVALIDDATA;
1141 vs->discontinuity = 0;
1142 while (!avio_feof(in)) {
1143 ff_get_chomp_line(in, line, sizeof(line));
1144 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1145 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1146 if (tmp_sequence < vs->sequence)
1147 av_log(hls, AV_LOG_VERBOSE,
1148 "Found playlist sequence number was smaller """
1149 "than specified start sequence number: %"PRId64" < %"PRId64", "
1150 "omitting\n", tmp_sequence, hls->start_sequence);
1152 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1153 vs->sequence = tmp_sequence;
1155 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1157 vs->discontinuity = 1;
1158 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1160 vs->duration = atof(ptr);
1161 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1162 ptr = av_stristr(line, "URI=\"");
1164 ptr += strlen("URI=\"");
1165 end = av_stristr(ptr, ",");
1167 av_strlcpy(hls->key_uri, ptr, end - ptr);
1169 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1173 ptr = av_stristr(line, "IV=0x");
1175 ptr += strlen("IV=0x");
1176 end = av_stristr(ptr, ",");
1178 av_strlcpy(hls->iv_string, ptr, end - ptr);
1180 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1184 } else if (av_strstart(line, "#", NULL)) {
1186 } else if (line[0]) {
1188 char *new_file = av_strdup(line);
1190 ret = AVERROR(ENOMEM);
1193 ff_format_set_url(vs->avf, new_file);
1195 new_start_pos = avio_tell(vs->avf->pb);
1196 vs->size = new_start_pos - vs->start_pos;
1197 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1198 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1201 vs->start_pos = new_start_pos;
1211 static void hls_free_segments(HLSSegment *p)
1222 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1224 size_t len = strlen(oc->url);
1225 char *final_filename = av_strdup(oc->url);
1228 if (!final_filename)
1229 return AVERROR(ENOMEM);
1230 final_filename[len-4] = '\0';
1231 ret = ff_rename(oc->url, final_filename, s);
1232 oc->url[len-4] = '\0';
1233 av_freep(&final_filename);
1237 static const char* get_relative_url(const char *master_url, const char *media_url)
1239 const char *p = strrchr(master_url, '/');
1240 size_t base_len = 0;
1242 if (!p) p = strrchr(master_url, '\\');
1245 base_len = p - master_url;
1246 if (av_strncasecmp(master_url, media_url, base_len)) {
1247 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1252 return media_url + base_len;
1255 static int64_t get_stream_bit_rate(AVStream *stream)
1257 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1259 AV_PKT_DATA_CPB_PROPERTIES,
1263 if (stream->codecpar->bit_rate)
1264 return stream->codecpar->bit_rate;
1266 return props->max_bitrate;
1271 static int create_master_playlist(AVFormatContext *s,
1272 VariantStream * const input_vs)
1274 HLSContext *hls = s->priv_data;
1275 VariantStream *vs, *temp_vs;
1276 AVStream *vid_st, *aud_st;
1277 AVDictionary *options = NULL;
1280 const char *m3u8_rel_name = NULL;
1282 ClosedCaptionsStream *ccs;
1283 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1284 int is_file_proto = proto && !strcmp(proto, "file");
1285 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1286 char temp_filename[MAX_URL_SIZE];
1288 input_vs->m3u8_created = 1;
1289 if (!hls->master_m3u8_created) {
1290 /* For the first time, wait until all the media playlists are created */
1291 for (i = 0; i < hls->nb_varstreams; i++)
1292 if (!hls->var_streams[i].m3u8_created)
1295 /* Keep publishing the master playlist at the configured rate */
1296 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1297 input_vs->number % hls->master_publish_rate)
1301 set_http_options(s, &options, hls);
1302 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1303 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1304 av_dict_free(&options);
1306 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1311 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1313 for (i = 0; i < hls->nb_ccstreams; i++) {
1314 ccs = &(hls->cc_streams[i]);
1315 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1316 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1317 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1319 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1320 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1323 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1324 for (i = 0; i < hls->nb_varstreams; i++) {
1325 vs = &(hls->var_streams[i]);
1327 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1330 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1331 if (!m3u8_rel_name) {
1332 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1336 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1339 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1340 for (i = 0; i < hls->nb_varstreams; i++) {
1341 vs = &(hls->var_streams[i]);
1343 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1344 if (!m3u8_rel_name) {
1345 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1351 for (j = 0; j < vs->nb_streams; j++) {
1352 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1353 vid_st = vs->streams[j];
1354 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1355 aud_st = vs->streams[j];
1358 if (!vid_st && !aud_st) {
1359 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1364 * Traverse through the list of audio only rendition streams and find
1365 * the rendition which has highest bitrate in the same audio group
1368 for (j = 0; j < hls->nb_varstreams; j++) {
1369 temp_vs = &(hls->var_streams[j]);
1370 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1372 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1374 aud_st = temp_vs->streams[0];
1375 if (temp_vs->streams[0]->codecpar->bit_rate >
1376 aud_st->codecpar->bit_rate)
1377 aud_st = temp_vs->streams[0];
1384 bandwidth += get_stream_bit_rate(vid_st);
1386 bandwidth += get_stream_bit_rate(aud_st);
1387 bandwidth += bandwidth / 10;
1390 if (vid_st && vs->ccgroup) {
1391 /* check if this group name is available in the cc map string */
1392 for (j = 0; j < hls->nb_ccstreams; j++) {
1393 ccs = &(hls->cc_streams[j]);
1394 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1395 ccgroup = vs->ccgroup;
1399 if (j == hls->nb_ccstreams)
1400 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1404 if (!hls->has_default_key || !hls->has_video_m3u8) {
1405 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1406 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1409 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1410 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1416 hls->master_m3u8_created = 1;
1417 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1419 ff_rename(temp_filename, hls->master_m3u8_url, s);
1424 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1426 HLSContext *hls = s->priv_data;
1428 int target_duration = 0;
1430 char temp_filename[MAX_URL_SIZE];
1431 char temp_vtt_filename[MAX_URL_SIZE];
1432 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1433 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1434 int is_file_proto = proto && !strcmp(proto, "file");
1435 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1436 static unsigned warned_non_file;
1437 char *key_uri = NULL;
1438 char *iv_string = NULL;
1439 AVDictionary *options = NULL;
1440 double prog_date_time = vs->initial_prog_date_time;
1441 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1442 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1445 if (byterange_mode) {
1450 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1454 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1458 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1459 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1461 set_http_options(s, &options, hls);
1462 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1463 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1464 if (hls->ignore_io_errors)
1469 for (en = vs->segments; en; en = en->next) {
1470 if (target_duration <= en->duration)
1471 target_duration = lrint(en->duration);
1474 vs->discontinuity_set = 0;
1475 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1476 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1478 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1479 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1480 vs->discontinuity_set = 1;
1482 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1483 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1485 for (en = vs->segments; en; en = en->next) {
1486 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1487 av_strcasecmp(en->iv_string, iv_string))) {
1488 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1490 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1491 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1492 key_uri = en->key_uri;
1493 iv_string = en->iv_string;
1496 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1497 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1498 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1501 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1502 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1503 en->size, en->pos, vs->baseurl,
1504 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1506 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1510 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1511 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1513 if (vs->vtt_m3u8_name) {
1514 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1515 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1516 if (hls->ignore_io_errors)
1520 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1521 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1522 for (en = vs->segments; en; en = en->next) {
1523 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1524 en->duration, 0, en->size, en->pos,
1525 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1527 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1532 ff_hls_write_end_list(hls->sub_m3u8_out);
1537 av_dict_free(&options);
1538 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1542 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1543 if (use_temp_file) {
1544 ff_rename(temp_filename, vs->m3u8_name, s);
1545 if (vs->vtt_m3u8_name)
1546 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1548 if (ret >= 0 && hls->master_pl_name)
1549 if (create_master_playlist(s, vs) < 0)
1550 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1555 static int hls_start(AVFormatContext *s, VariantStream *vs)
1557 HLSContext *c = s->priv_data;
1558 AVFormatContext *oc = vs->avf;
1559 AVFormatContext *vtt_oc = vs->vtt_avf;
1560 AVDictionary *options = NULL;
1561 const char *proto = NULL;
1562 int use_temp_file = 0;
1563 char iv_string[KEYSIZE*2 + 1];
1566 if (c->flags & HLS_SINGLE_FILE) {
1567 char *new_name = av_strdup(vs->basename);
1569 return AVERROR(ENOMEM);
1570 ff_format_set_url(oc, new_name);
1571 if (vs->vtt_basename) {
1572 new_name = av_strdup(vs->vtt_basename);
1574 return AVERROR(ENOMEM);
1575 ff_format_set_url(vtt_oc, new_name);
1577 } else if (c->max_seg_size > 0) {
1578 char *filename = NULL;
1579 if (replace_int_data_in_filename(&filename,
1581 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1583 vs->basename, 'd', vs->sequence) < 1) {
1585 av_freep(&filename);
1586 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1587 return AVERROR(EINVAL);
1589 ff_format_set_url(oc, filename);
1591 if (c->use_localtime) {
1593 struct tm *tm, tmpbuf;
1594 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1595 char *buf = av_mallocz(bufsize);
1597 return AVERROR(ENOMEM);
1599 tm = localtime_r(&now0, &tmpbuf);
1600 ff_format_set_url(oc, buf);
1601 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1602 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1603 return AVERROR(EINVAL);
1606 err = sls_flag_use_localtime_filename(oc, c, vs);
1608 return AVERROR(ENOMEM);
1611 if (c->use_localtime_mkdir) {
1613 char *fn_copy = av_strdup(oc->url);
1614 dir = av_dirname(fn_copy);
1615 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1616 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1618 return AVERROR(errno);
1623 char *filename = NULL;
1624 if (replace_int_data_in_filename(&filename,
1626 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1628 vs->basename, 'd', vs->sequence) < 1) {
1630 av_freep(&filename);
1631 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1632 return AVERROR(EINVAL);
1634 ff_format_set_url(oc, filename);
1636 if ( vs->vtt_basename) {
1637 char *filename = NULL;
1638 if (replace_int_data_in_filename(&filename,
1640 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1642 vs->vtt_basename, 'd', vs->sequence) < 1) {
1644 av_freep(&filename);
1645 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1646 return AVERROR(EINVAL);
1648 ff_format_set_url(vtt_oc, filename);
1653 proto = avio_find_protocol_name(oc->url);
1654 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1656 if (use_temp_file) {
1657 char *new_name = av_asprintf("%s.tmp", oc->url);
1659 return AVERROR(ENOMEM);
1660 ff_format_set_url(oc, new_name);
1663 if (c->key_info_file || c->encrypt) {
1664 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1665 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1666 return AVERROR_PATCHWELCOME;
1669 if (c->key_info_file && c->encrypt) {
1670 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1671 " ignoring -hls_enc\n");
1674 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1675 if (c->key_info_file) {
1676 if ((err = hls_encryption_start(s)) < 0)
1679 if ((err = do_encrypt(s, vs)) < 0)
1682 c->encrypt_started = 1;
1684 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1686 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1687 memset(c->iv_string, 0, sizeof(c->iv_string));
1688 memcpy(c->iv_string, iv_string, sizeof(iv_string));
1691 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1692 if (oc->oformat->priv_class && oc->priv_data) {
1693 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1695 if (c->flags & HLS_SINGLE_FILE) {
1696 set_http_options(s, &options, c);
1697 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1698 if (c->ignore_io_errors)
1704 if (vs->vtt_basename) {
1705 set_http_options(s, &options, c);
1706 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1707 if (c->ignore_io_errors)
1712 av_dict_free(&options);
1714 if (vs->vtt_basename) {
1715 err = avformat_write_header(vtt_oc,NULL);
1722 av_dict_free(&options);
1727 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1730 time_t t = time(NULL);
1731 struct tm *p, tmbuf;
1732 HLSContext *hls = s->priv_data;
1734 p = localtime_r(&t, &tmbuf);
1735 // no %s support when strftime returned error or left format string unchanged
1736 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1737 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1738 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1740 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1743 static int append_postfix(char *name, int name_buf_len, int i)
1746 char extension[10] = {'\0'};
1748 p = strrchr(name, '.');
1750 av_strlcpy(extension, p, sizeof(extension));
1754 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1756 if (strlen(extension))
1757 av_strlcat(name, extension, name_buf_len);
1762 static int validate_name(int nb_vs, const char *fn)
1764 const char *filename, *subdir_name;
1765 char *fn_dup = NULL;
1769 ret = AVERROR(EINVAL);
1773 fn_dup = av_strdup(fn);
1774 filename = av_basename(fn);
1775 subdir_name = av_dirname(fn_dup);
1777 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1778 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1779 "either in the filename or in the sub-directory name of file %s\n", fn);
1780 ret = AVERROR(EINVAL);
1784 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1785 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1786 "in the sub-directory name of file %s, but only in one of them\n", fn);
1787 ret = AVERROR(EINVAL);
1796 static int format_name(const char *buf, char **s, int index, const char *varname)
1798 const char *proto, *dir;
1799 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1802 orig_buf_dup = av_strdup(buf);
1803 if (!orig_buf_dup) {
1804 ret = AVERROR(ENOMEM);
1808 if (!av_stristr(buf, "%v")) {
1814 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1815 ret = AVERROR(EINVAL);
1819 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1820 ret = AVERROR(EINVAL);
1825 proto = avio_find_protocol_name(orig_buf_dup);
1826 dir = av_dirname(orig_buf_dup);
1828 /* if %v is present in the file's directory, create sub-directory */
1829 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1830 mod_buf_dup = av_strdup(*s);
1831 dir = av_dirname(mod_buf_dup);
1832 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1833 ret = AVERROR(errno);
1839 av_freep(&orig_buf_dup);
1840 av_freep(&mod_buf_dup);
1844 static int get_nth_codec_stream_index(AVFormatContext *s,
1845 enum AVMediaType codec_type,
1848 unsigned int stream_index, cnt;
1849 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1852 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1853 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1855 if (cnt == stream_id)
1856 return stream_index;
1862 static int parse_variant_stream_mapstring(AVFormatContext *s)
1864 HLSContext *hls = s->priv_data;
1866 int stream_index, i, j;
1867 enum AVMediaType codec_type;
1868 int nb_varstreams = 0, nb_streams;
1869 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1873 * Expected format for var_stream_map string is as below:
1875 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1876 * This string specifies how to group the audio, video and subtitle streams
1877 * into different variant streams. The variant stream groups are separated
1880 * a:, v:, s: are keys to specify audio, video and subtitle streams
1881 * respectively. Allowed values are 0 to 9 digits (limited just based on
1884 * agroup: is key to specify audio group. A string can be given as value.
1886 p = av_strdup(hls->var_stream_map);
1888 return AVERROR(ENOMEM);
1891 while (av_strtok(q, " \t", &saveptr1)) {
1897 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1898 if (!hls->var_streams)
1899 return AVERROR(ENOMEM);
1900 hls->nb_varstreams = nb_varstreams;
1902 p = hls->var_stream_map;
1904 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1907 if (nb_varstreams < hls->nb_varstreams) {
1908 vs = &(hls->var_streams[nb_varstreams]);
1909 vs->var_stream_idx = nb_varstreams;
1913 return AVERROR(EINVAL);
1916 while (q < varstr + strlen(varstr)) {
1917 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1918 !av_strncasecmp(q, "s:", 2))
1922 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1924 return AVERROR(ENOMEM);
1927 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1929 if (av_strstart(keyval, "language:", &val)) {
1930 av_free(vs->language);
1931 vs->language = av_strdup(val);
1933 return AVERROR(ENOMEM);
1935 } else if (av_strstart(keyval, "default:", &val)) {
1936 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1937 (!av_strncasecmp(val, "1", strlen("1"))));
1938 hls->has_default_key = 1;
1940 } else if (av_strstart(keyval, "name:", &val)) {
1941 av_free(vs->varname);
1942 vs->varname = av_strdup(val);
1944 return AVERROR(ENOMEM);
1946 } else if (av_strstart(keyval, "agroup:", &val)) {
1947 av_free(vs->agroup);
1948 vs->agroup = av_strdup(val);
1950 return AVERROR(ENOMEM);
1952 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1953 av_free(vs->ccgroup);
1954 vs->ccgroup = av_strdup(val);
1956 return AVERROR(ENOMEM);
1958 } else if (av_strstart(keyval, "v:", &val)) {
1959 codec_type = AVMEDIA_TYPE_VIDEO;
1960 hls->has_video_m3u8 = 1;
1961 } else if (av_strstart(keyval, "a:", &val)) {
1962 codec_type = AVMEDIA_TYPE_AUDIO;
1963 } else if (av_strstart(keyval, "s:", &val)) {
1964 codec_type = AVMEDIA_TYPE_SUBTITLE;
1966 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1967 return AVERROR(EINVAL);
1971 if (av_isdigit(*val))
1972 stream_index = get_nth_codec_stream_index (s, codec_type,
1975 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1976 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
1977 if (vs->streams[i] == s->streams[stream_index]) {
1978 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
1979 "variant definition #%d\n", nb_varstreams - 1);
1980 return AVERROR(EINVAL);
1983 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
1984 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
1985 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
1986 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
1987 "in two different variant definitions #%d and #%d\n",
1988 j, nb_varstreams - 1);
1989 return AVERROR(EINVAL);
1993 vs->streams[nb_streams++] = s->streams[stream_index];
1995 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1996 return AVERROR(EINVAL);
2000 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2001 hls->nb_varstreams);
2006 static int parse_cc_stream_mapstring(AVFormatContext *s)
2008 HLSContext *hls = s->priv_data;
2009 int nb_ccstreams = 0;
2010 char *p, *q, *ccstr, *keyval;
2011 char *saveptr1 = NULL, *saveptr2 = NULL;
2013 ClosedCaptionsStream *ccs;
2015 p = av_strdup(hls->cc_stream_map);
2017 return AVERROR(ENOMEM);
2020 while (av_strtok(q, " \t", &saveptr1)) {
2026 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2027 if (!hls->cc_streams)
2028 return AVERROR(ENOMEM);
2029 hls->nb_ccstreams = nb_ccstreams;
2031 p = hls->cc_stream_map;
2033 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2036 if (nb_ccstreams < hls->nb_ccstreams)
2037 ccs = &(hls->cc_streams[nb_ccstreams++]);
2039 return AVERROR(EINVAL);
2041 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2044 if (av_strstart(keyval, "ccgroup:", &val)) {
2045 av_free(ccs->ccgroup);
2046 ccs->ccgroup = av_strdup(val);
2048 return AVERROR(ENOMEM);
2049 } else if (av_strstart(keyval, "instreamid:", &val)) {
2050 av_free(ccs->instreamid);
2051 ccs->instreamid = av_strdup(val);
2052 if (!ccs->instreamid)
2053 return AVERROR(ENOMEM);
2054 } else if (av_strstart(keyval, "language:", &val)) {
2055 av_free(ccs->language);
2056 ccs->language = av_strdup(val);
2058 return AVERROR(ENOMEM);
2060 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2061 return AVERROR(EINVAL);
2065 if (!ccs->ccgroup || !ccs->instreamid) {
2066 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2067 return AVERROR(EINVAL);
2070 if (av_strstart(ccs->instreamid, "CC", &val)) {
2071 if (atoi(val) < 1 || atoi(val) > 4) {
2072 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2073 atoi(val), ccs->instreamid);
2074 return AVERROR(EINVAL);
2076 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2077 if (atoi(val) < 1 || atoi(val) > 63) {
2078 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2079 atoi(val), ccs->instreamid);
2080 return AVERROR(EINVAL);
2083 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2085 return AVERROR(EINVAL);
2092 static int update_variant_stream_info(AVFormatContext *s)
2094 HLSContext *hls = s->priv_data;
2098 if (hls->cc_stream_map) {
2099 ret = parse_cc_stream_mapstring(s);
2104 if (hls->var_stream_map) {
2105 return parse_variant_stream_mapstring(s);
2107 //By default, a single variant stream with all the codec streams is created
2108 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2109 if (!hls->var_streams)
2110 return AVERROR(ENOMEM);
2111 hls->nb_varstreams = 1;
2113 hls->var_streams[0].var_stream_idx = 0;
2114 hls->var_streams[0].nb_streams = s->nb_streams;
2115 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2116 hls->var_streams[0].nb_streams);
2117 if (!hls->var_streams[0].streams) {
2118 return AVERROR(ENOMEM);
2121 //by default, the first available ccgroup is mapped to the variant stream
2122 if (hls->nb_ccstreams) {
2123 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2124 if (!hls->var_streams[0].ccgroup) {
2125 return AVERROR(ENOMEM);
2129 for (i = 0; i < s->nb_streams; i++)
2130 hls->var_streams[0].streams[i] = s->streams[i];
2135 static int update_master_pl_info(AVFormatContext *s)
2137 HLSContext *hls = s->priv_data;
2139 char *fn1= NULL, *fn2 = NULL;
2142 fn1 = av_strdup(s->url);
2143 dir = av_dirname(fn1);
2146 * if output file's directory has %v, variants are created in sub-directories
2147 * then master is created at the sub-directories level
2149 if (dir && av_stristr(av_basename(dir), "%v")) {
2150 fn2 = av_strdup(dir);
2151 dir = av_dirname(fn2);
2154 if (dir && strcmp(dir, "."))
2155 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2157 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2159 if (!hls->master_m3u8_url) {
2160 ret = AVERROR(ENOMEM);
2171 static int hls_write_header(AVFormatContext *s)
2173 HLSContext *hls = s->priv_data;
2175 VariantStream *vs = NULL;
2177 for (i = 0; i < hls->nb_varstreams; i++) {
2178 vs = &hls->var_streams[i];
2180 ret = avformat_write_header(vs->avf, NULL);
2183 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2184 for (j = 0; j < vs->nb_streams; j++) {
2186 AVStream *outer_st = vs->streams[j];
2188 if (hls->max_seg_size > 0) {
2189 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2190 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2191 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2192 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2193 outer_st->codecpar->bit_rate, hls->max_seg_size);
2197 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2198 inner_st = vs->avf->streams[j];
2199 else if (vs->vtt_avf)
2200 inner_st = vs->vtt_avf->streams[0];
2202 /* We have a subtitle stream, when the user does not want one */
2206 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2207 write_codec_attr(outer_st, vs);
2210 /* Update the Codec Attr string for the mapped audio groups */
2211 if (vs->has_video && vs->agroup) {
2212 for (j = 0; j < hls->nb_varstreams; j++) {
2213 VariantStream *vs_agroup = &(hls->var_streams[j]);
2214 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2215 vs_agroup->agroup &&
2216 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2217 write_codec_attr(vs_agroup->streams[0], vs);
2226 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2228 HLSContext *hls = s->priv_data;
2229 AVFormatContext *oc = NULL;
2230 AVStream *st = s->streams[pkt->stream_index];
2231 int64_t end_pts = 0;
2233 int ret = 0, can_split = 1, i, j;
2234 int stream_index = 0;
2235 int range_length = 0;
2236 const char *proto = NULL;
2237 int use_temp_file = 0;
2238 uint8_t *buffer = NULL;
2239 VariantStream *vs = NULL;
2240 char *old_filename = NULL;
2242 for (i = 0; i < hls->nb_varstreams; i++) {
2243 vs = &hls->var_streams[i];
2244 for (j = 0; j < vs->nb_streams; j++) {
2245 if (vs->streams[j] == st) {
2246 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2262 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2263 return AVERROR(ENOMEM);
2266 end_pts = hls->recording_time * vs->number;
2268 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2269 /* reset end_pts, hls->recording_time at end of the init hls list */
2270 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2271 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2272 hls->recording_time = hls->time * AV_TIME_BASE;
2273 end_pts = init_list_dur + after_init_list_dur ;
2276 if (vs->start_pts == AV_NOPTS_VALUE) {
2277 vs->start_pts = pkt->pts;
2278 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2279 vs->start_pts_from_audio = 1;
2281 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2282 vs->start_pts = pkt->pts;
2283 vs->start_pts_from_audio = 0;
2286 if (vs->has_video) {
2287 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2288 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2289 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2291 if (pkt->pts == AV_NOPTS_VALUE)
2292 is_ref_pkt = can_split = 0;
2295 if (vs->end_pts == AV_NOPTS_VALUE)
2296 vs->end_pts = pkt->pts;
2297 if (vs->new_start) {
2299 vs->duration = (double)(pkt->pts - vs->end_pts)
2300 * st->time_base.num / st->time_base.den;
2301 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2303 if (pkt->duration) {
2304 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2306 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2307 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2313 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2314 end_pts, AV_TIME_BASE_Q) >= 0) {
2315 int64_t new_start_pos;
2316 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2318 av_write_frame(oc, NULL); /* Flush any buffered data */
2319 new_start_pos = avio_tell(oc->pb);
2320 vs->size = new_start_pos - vs->start_pos;
2322 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2323 if (!vs->init_range_length) {
2324 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2325 avio_write(vs->out, buffer, range_length);
2327 vs->init_range_length = range_length;
2328 avio_open_dyn_buf(&oc->pb);
2329 vs->packets_written = 0;
2330 vs->start_pos = range_length;
2331 if (!byterange_mode) {
2332 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2336 if (!byterange_mode) {
2338 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2343 proto = avio_find_protocol_name(oc->url);
2344 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2347 if (hls->flags & HLS_SINGLE_FILE) {
2348 ret = flush_dynbuf(vs, &range_length);
2349 av_freep(&vs->temp_buffer);
2353 vs->size = range_length;
2355 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2356 AVDictionary *options = NULL;
2357 char *filename = NULL;
2358 if (hls->key_info_file || hls->encrypt) {
2359 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2360 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2361 filename = av_asprintf("crypto:%s", oc->url);
2363 filename = av_asprintf("%s", oc->url);
2366 av_dict_free(&options);
2367 return AVERROR(ENOMEM);
2370 // look to rename the asset name
2372 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2374 set_http_options(s, &options, hls);
2376 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2378 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2379 "Failed to open file '%s'\n", filename);
2380 av_dict_free(&options);
2381 return hls->ignore_io_errors ? 0 : ret;
2383 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2384 write_styp(vs->out);
2386 ret = flush_dynbuf(vs, &range_length);
2388 av_dict_free(&options);
2391 ret = hlsenc_io_close(s, &vs->out, filename);
2393 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2394 " will retry with a new http session.\n");
2395 ff_format_io_close(s, &vs->out);
2396 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2397 reflush_dynbuf(vs, &range_length);
2398 ret = hlsenc_io_close(s, &vs->out, filename);
2400 av_dict_free(&options);
2401 av_freep(&vs->temp_buffer);
2402 av_freep(&filename);
2406 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2407 hls_rename_temp_file(s, oc);
2410 old_filename = av_strdup(oc->url);
2411 if (!old_filename) {
2412 return AVERROR(ENOMEM);
2415 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2416 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2417 vs->end_pts = pkt->pts;
2420 av_freep(&old_filename);
2425 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2426 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2427 if ((ret = hls_window(s, 0, vs)) < 0) {
2428 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2429 ff_format_io_close(s, &vs->out);
2431 if ((ret = hls_window(s, 0, vs)) < 0) {
2432 av_freep(&old_filename);
2438 if (hls->flags & HLS_SINGLE_FILE) {
2440 vs->start_pos += vs->size;
2441 } else if (hls->max_seg_size > 0) {
2442 vs->start_pos = new_start_pos;
2443 if (vs->size >= hls->max_seg_size) {
2445 sls_flag_file_rename(hls, vs, old_filename);
2446 ret = hls_start(s, vs);
2448 /* When split segment by byte, the duration is short than hls_time,
2449 * so it is not enough one segment duration as hls_time, */
2454 vs->start_pos = new_start_pos;
2455 sls_flag_file_rename(hls, vs, old_filename);
2456 ret = hls_start(s, vs);
2458 av_freep(&old_filename);
2466 vs->packets_written++;
2468 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2469 vs->video_keyframe_size += pkt->size;
2470 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2471 vs->video_keyframe_size = avio_tell(oc->pb);
2473 vs->video_keyframe_pos = avio_tell(vs->out);
2475 if (hls->ignore_io_errors)
2482 static void hls_free_variant_streams(struct HLSContext *hls)
2485 AVFormatContext *vtt_oc = NULL;
2486 VariantStream *vs = NULL;
2488 for (i = 0; i < hls->nb_varstreams; i++) {
2489 vs = &hls->var_streams[i];
2490 vtt_oc = vs->vtt_avf;
2492 av_freep(&vs->basename);
2493 av_freep(&vs->base_output_dirname);
2494 av_freep(&vs->fmp4_init_filename);
2496 av_freep(&vs->vtt_basename);
2497 av_freep(&vs->vtt_m3u8_name);
2498 avformat_free_context(vtt_oc);
2501 avformat_free_context(vs->avf);
2503 hls_free_segments(vs->segments);
2504 hls_free_segments(vs->old_segments);
2505 av_freep(&vs->m3u8_name);
2506 av_freep(&vs->streams);
2507 av_freep(&vs->agroup);
2508 av_freep(&vs->language);
2509 av_freep(&vs->ccgroup);
2510 av_freep(&vs->baseurl);
2511 av_freep(&vs->varname);
2515 static int hls_write_trailer(struct AVFormatContext *s)
2517 HLSContext *hls = s->priv_data;
2518 AVFormatContext *oc = NULL;
2519 AVFormatContext *vtt_oc = NULL;
2520 char *old_filename = NULL;
2521 const char *proto = NULL;
2522 int use_temp_file = 0;
2525 VariantStream *vs = NULL;
2526 AVDictionary *options = NULL;
2527 int range_length, byterange_mode;
2529 for (i = 0; i < hls->nb_varstreams; i++) {
2530 char *filename = NULL;
2531 vs = &hls->var_streams[i];
2533 vtt_oc = vs->vtt_avf;
2534 old_filename = av_strdup(oc->url);
2537 if (!old_filename) {
2538 return AVERROR(ENOMEM);
2540 if (hls->key_info_file || hls->encrypt) {
2541 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2542 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2543 filename = av_asprintf("crypto:%s", oc->url);
2545 filename = av_asprintf("%s", oc->url);
2548 av_freep(&old_filename);
2549 return AVERROR(ENOMEM);
2552 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2553 int range_length = 0;
2554 if (!vs->init_range_length) {
2555 uint8_t *buffer = NULL;
2556 av_write_frame(oc, NULL); /* Flush any buffered data */
2558 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2559 avio_write(vs->out, buffer, range_length);
2561 vs->init_range_length = range_length;
2562 avio_open_dyn_buf(&oc->pb);
2563 vs->packets_written = 0;
2564 vs->start_pos = range_length;
2565 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2566 if (!byterange_mode) {
2567 ff_format_io_close(s, &vs->out);
2568 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2572 if (!(hls->flags & HLS_SINGLE_FILE)) {
2573 set_http_options(s, &options, hls);
2574 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2576 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2579 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2580 write_styp(vs->out);
2582 ret = flush_dynbuf(vs, &range_length);
2586 vs->size = range_length;
2587 hlsenc_io_close(s, &vs->out, filename);
2588 ret = hlsenc_io_close(s, &vs->out, filename);
2590 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2591 ff_format_io_close(s, &vs->out);
2592 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2594 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2597 reflush_dynbuf(vs, &range_length);
2598 ret = hlsenc_io_close(s, &vs->out, filename);
2600 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2602 av_freep(&vs->temp_buffer);
2605 av_freep(&filename);
2606 av_write_trailer(oc);
2608 proto = avio_find_protocol_name(oc->url);
2609 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2612 // rename that segment from .tmp to the real one
2613 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2614 hls_rename_temp_file(s, oc);
2615 av_freep(&old_filename);
2616 old_filename = av_strdup(oc->url);
2618 if (!old_filename) {
2619 return AVERROR(ENOMEM);
2623 /* after av_write_trailer, then duration + 1 duration per packet */
2624 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2626 sls_flag_file_rename(hls, vs, old_filename);
2630 av_write_trailer(vtt_oc);
2631 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2632 ff_format_io_close(s, &vtt_oc->pb);
2634 ret = hls_window(s, 1, vs);
2636 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2637 ff_format_io_close(s, &vs->out);
2638 hls_window(s, 1, vs);
2640 ffio_free_dyn_buf(&oc->pb);
2642 av_free(old_filename);
2645 hls_free_variant_streams(hls);
2647 for (i = 0; i < hls->nb_ccstreams; i++) {
2648 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2649 av_freep(&ccs->ccgroup);
2650 av_freep(&ccs->instreamid);
2651 av_freep(&ccs->language);
2654 ff_format_io_close(s, &hls->m3u8_out);
2655 ff_format_io_close(s, &hls->sub_m3u8_out);
2656 av_freep(&hls->key_basename);
2657 av_freep(&hls->var_streams);
2658 av_freep(&hls->cc_streams);
2659 av_freep(&hls->master_m3u8_url);
2664 static int hls_init(AVFormatContext *s)
2669 HLSContext *hls = s->priv_data;
2670 const char *pattern = "%d.ts";
2671 VariantStream *vs = NULL;
2672 int basename_size = 0;
2673 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2674 const char *vtt_pattern = "%d.vtt";
2676 int vtt_basename_size = 0;
2677 int http_base_proto = ff_is_http_proto(s->url);
2678 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2680 hls->has_default_key = 0;
2681 hls->has_video_m3u8 = 0;
2682 ret = update_variant_stream_info(s);
2684 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2688 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2689 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2690 ret = AVERROR(EINVAL);
2691 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2695 if (!hls->method && http_base_proto) {
2696 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2699 ret = validate_name(hls->nb_varstreams, s->url);
2703 if (hls->segment_filename) {
2704 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2709 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2710 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2715 if (hls->subtitle_filename) {
2716 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2721 if (hls->master_pl_name) {
2722 ret = update_master_pl_info(s);
2724 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2730 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2733 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2734 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2735 time_t t = time(NULL); // we will need it in either case
2736 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2737 hls->start_sequence = (int64_t)t;
2738 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2740 struct tm *p, tmbuf;
2741 if (!(p = localtime_r(&t, &tmbuf)))
2742 return AVERROR(errno);
2743 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2744 return AVERROR(ENOMEM);
2745 hls->start_sequence = strtoll(b, NULL, 10);
2747 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2750 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2751 for (i = 0; i < hls->nb_varstreams; i++) {
2752 vs = &hls->var_streams[i];
2754 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2758 vs->sequence = hls->start_sequence;
2759 vs->start_pts = AV_NOPTS_VALUE;
2760 vs->end_pts = AV_NOPTS_VALUE;
2761 vs->current_segment_final_filename_fmt[0] = '\0';
2763 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2764 // Independent segments cannot be guaranteed when splitting by time
2765 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2766 av_log(s, AV_LOG_WARNING,
2767 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2768 "Disabling 'independent_segments' flag\n");
2771 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2774 vs->initial_prog_date_time = now0;
2777 for (j = 0; j < vs->nb_streams; j++) {
2778 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2779 /* Get one video stream to reference for split segments
2780 * so use the first video stream index. */
2781 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2782 vs->reference_stream_index = vs->streams[j]->index;
2784 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2787 if (vs->has_video > 1)
2788 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2789 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2790 vs->oformat = av_guess_format("mp4", NULL, NULL);
2792 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2796 ret = AVERROR_MUXER_NOT_FOUND;
2800 if (vs->has_subtitle) {
2801 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2802 if (!vs->vtt_oformat) {
2803 ret = AVERROR_MUXER_NOT_FOUND;
2807 if (hls->segment_filename) {
2808 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2812 if (hls->flags & HLS_SINGLE_FILE) {
2813 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2820 if (hls->use_localtime) {
2821 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2823 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2826 vs->basename = av_malloc(basename_size);
2827 if (!vs->basename) {
2828 ret = AVERROR(ENOMEM);
2832 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2834 p = strrchr(vs->basename, '.');
2837 if (hls->use_localtime) {
2838 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2840 av_strlcat(vs->basename, pattern, basename_size);
2844 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2845 if (hls->nb_varstreams > 1)
2846 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2847 if (hls->flags & HLS_SINGLE_FILE) {
2848 vs->fmp4_init_filename = av_strdup(vs->basename);
2849 if (!vs->fmp4_init_filename) {
2850 ret = AVERROR(ENOMEM);
2854 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2855 if (!vs->fmp4_init_filename ) {
2856 ret = AVERROR(ENOMEM);
2859 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2860 fmp4_init_filename_len);
2861 if (hls->nb_varstreams > 1) {
2862 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2863 av_freep(&vs->fmp4_init_filename);
2864 format_name(hls->fmp4_init_filename, &vs->fmp4_init_filename, i, vs->varname);
2866 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2872 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2873 strlen(vs->fmp4_init_filename) + 1;
2875 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2876 if (!vs->base_output_dirname) {
2877 ret = AVERROR(ENOMEM);
2881 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2882 fmp4_init_filename_len);
2883 p = strrchr(vs->base_output_dirname, '/');
2886 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2887 fmp4_init_filename_len);
2889 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2890 fmp4_init_filename_len);
2895 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2899 if (vs->has_subtitle) {
2901 if (hls->flags & HLS_SINGLE_FILE)
2902 vtt_pattern = ".vtt";
2903 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2905 vs->vtt_basename = av_malloc(vtt_basename_size);
2906 if (!vs->vtt_basename) {
2907 ret = AVERROR(ENOMEM);
2910 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2911 p = strrchr(vs->vtt_basename, '.');
2915 if ( hls->subtitle_filename ) {
2916 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2920 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2921 if (!vs->vtt_m3u8_name) {
2922 ret = AVERROR(ENOMEM);
2925 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2926 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2928 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2932 vs->baseurl = av_strdup(hls->baseurl);
2934 ret = AVERROR(ENOMEM);
2939 if ((ret = hls_mux_init(s, vs)) < 0)
2942 if (hls->flags & HLS_APPEND_LIST) {
2943 parse_playlist(s, vs->m3u8_name, vs);
2944 vs->discontinuity = 1;
2945 if (hls->init_time > 0) {
2946 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2947 " hls_init_time value will have no effect\n");
2949 hls->recording_time = hls->time * AV_TIME_BASE;
2953 if ((ret = hls_start(s, vs)) < 0)
2959 hls_free_variant_streams(hls);
2960 for (i = 0; i < hls->nb_ccstreams; i++) {
2961 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2962 av_freep(&ccs->ccgroup);
2963 av_freep(&ccs->instreamid);
2964 av_freep(&ccs->language);
2966 av_freep(&hls->key_basename);
2967 av_freep(&hls->var_streams);
2968 av_freep(&hls->cc_streams);
2969 av_freep(&hls->master_m3u8_url);
2975 #define OFFSET(x) offsetof(HLSContext, x)
2976 #define E AV_OPT_FLAG_ENCODING_PARAM
2977 static const AVOption options[] = {
2978 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2979 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2980 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2981 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2982 {"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},
2983 {"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},
2984 {"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},
2986 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2988 {"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},
2989 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2990 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2991 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2992 {"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},
2993 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2994 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2995 {"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},
2996 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2997 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2998 {"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"},
2999 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3000 {"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"},
3001 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3002 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3003 {"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"},
3004 {"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"},
3005 {"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"},
3006 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3007 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3008 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3009 {"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"},
3010 {"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"},
3011 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3012 {"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"},
3013 {"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"},
3014 {"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"},
3015 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3016 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3017 {"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"},
3018 #if FF_API_HLS_USE_LOCALTIME
3019 {"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 },
3021 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3022 #if FF_API_HLS_USE_LOCALTIME
3023 {"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 },
3025 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3026 {"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" },
3027 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3028 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3029 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3030 {"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" },
3031 {"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" },
3032 {"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" },
3033 {"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" },
3034 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3035 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3036 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3037 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3038 {"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},
3039 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3040 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3041 {"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 },
3042 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3046 static const AVClass hls_class = {
3047 .class_name = "hls muxer",
3048 .item_name = av_default_item_name,
3050 .version = LIBAVUTIL_VERSION_INT,
3054 AVOutputFormat ff_hls_muxer = {
3056 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3057 .extensions = "m3u8",
3058 .priv_data_size = sizeof(HLSContext),
3059 .audio_codec = AV_CODEC_ID_AAC,
3060 .video_codec = AV_CODEC_ID_H264,
3061 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3062 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3064 .write_header = hls_write_header,
3065 .write_packet = hls_write_packet,
3066 .write_trailer = hls_write_trailer,
3067 .priv_class = &hls_class,