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);;
481 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
485 HLSSegment *segment, *previous_segment = NULL;
486 float playlist_duration = 0.0f;
487 int ret = 0, path_size, sub_path_size;
489 char *dirname = NULL, *sub_path;
491 char *vtt_dirname = NULL;
492 AVDictionary *options = NULL;
493 AVIOContext *out = NULL;
494 const char *proto = NULL;
496 segment = vs->segments;
498 playlist_duration += segment->duration;
499 segment = segment->next;
502 segment = vs->old_segments;
505 playlist_duration -= segment->duration;
506 previous_segment = segment;
507 segment = previous_segment->next;
509 if (playlist_duration <= -previous_segment->duration) {
510 previous_segment->next = NULL;
513 if (segment_cnt >= hls->hls_delete_threshold) {
514 previous_segment->next = NULL;
519 if (segment && !hls->use_localtime_mkdir) {
520 char *dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
521 dirname = (char*)av_dirname(dirname_r);
524 /* if %v is present in the file's directory
525 * all segment belongs to the same variant, so do it only once before the loop*/
526 if (dirname && av_stristr(dirname, "%v")) {
527 char * r_dirname = dirname;
529 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
530 ret = AVERROR(EINVAL);
534 if (replace_str_data_in_filename(&r_dirname, dirname, 'v', vs->varname) < 1) {
535 ret = AVERROR(EINVAL);
545 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
547 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
548 path = av_malloc(path_size);
550 ret = AVERROR(ENOMEM);
554 if (hls->use_localtime_mkdir)
555 av_strlcpy(path, segment->filename, path_size);
556 else { // segment->filename contains basename only
557 av_strlcpy(path, dirname, path_size);
558 av_strlcat(path, segment->filename, path_size);
561 proto = avio_find_protocol_name(s->url);
562 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
563 av_dict_set(&options, "method", "DELETE", 0);
564 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
565 if (hls->ignore_io_errors)
569 ff_format_io_close(vs->avf, &out);
570 } else if (unlink(path) < 0) {
571 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
572 path, strerror(errno));
575 if ((segment->sub_filename[0] != '\0')) {
576 char *vtt_dirname_r = av_strdup(vs->vtt_avf->url);
577 vtt_dirname = (char*)av_dirname(vtt_dirname_r);
578 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
579 sub_path = av_malloc(sub_path_size);
581 ret = AVERROR(ENOMEM);
585 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
586 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
588 av_freep(&vtt_dirname);
590 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
591 av_dict_set(&options, "method", "DELETE", 0);
592 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
593 if (hls->ignore_io_errors)
598 ff_format_io_close(vs->vtt_avf, &out);
599 } else if (unlink(sub_path) < 0) {
600 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
601 sub_path, strerror(errno));
606 previous_segment = segment;
607 segment = previous_segment->next;
608 av_freep(&previous_segment);
614 av_freep(&vtt_dirname);
619 static int randomize(uint8_t *buf, int len)
622 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
625 if (RAND_bytes(buf, len))
628 return AVERROR(ENOSYS);
630 return AVERROR(EINVAL);
633 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
635 HLSContext *hls = s->priv_data;
639 uint8_t key[KEYSIZE];
641 len = strlen(s->url) + 4 + 1;
642 hls->key_basename = av_mallocz(len);
643 if (!hls->key_basename)
644 return AVERROR(ENOMEM);
646 av_strlcpy(hls->key_basename, s->url, len);
647 av_strlcat(hls->key_basename, ".key", len);
650 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
651 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
653 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
654 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
657 if (!*hls->iv_string) {
658 uint8_t iv[16] = { 0 };
662 AV_WB64(iv + 8, vs->sequence);
664 memcpy(iv, hls->iv, sizeof(iv));
666 ff_data_to_hex(buf, iv, sizeof(iv), 0);
668 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
671 if (!*hls->key_uri) {
672 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
673 return AVERROR(EINVAL);
676 if (!*hls->key_file) {
677 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
678 return AVERROR(EINVAL);
681 if (!*hls->key_string) {
683 if ((ret = randomize(key, sizeof(key))) < 0) {
684 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
688 memcpy(key, hls->key, sizeof(key));
691 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
692 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
694 avio_seek(pb, 0, SEEK_CUR);
695 avio_write(pb, key, KEYSIZE);
702 static int hls_encryption_start(AVFormatContext *s)
704 HLSContext *hls = s->priv_data;
707 uint8_t key[KEYSIZE];
709 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
710 av_log(hls, AV_LOG_ERROR,
711 "error opening key info file %s\n", hls->key_info_file);
715 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
716 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
718 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
719 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
721 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
722 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
724 ff_format_io_close(s, &pb);
726 if (!*hls->key_uri) {
727 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
728 return AVERROR(EINVAL);
731 if (!*hls->key_file) {
732 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
733 return AVERROR(EINVAL);
736 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
737 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
741 ret = avio_read(pb, key, sizeof(key));
742 ff_format_io_close(s, &pb);
743 if (ret != sizeof(key)) {
744 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
745 if (ret >= 0 || ret == AVERROR_EOF)
746 ret = AVERROR(EINVAL);
749 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
754 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
756 AVDictionary *options = NULL;
757 HLSContext *hls = s->priv_data;
759 AVFormatContext *vtt_oc = NULL;
760 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
763 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
768 oc->url = av_strdup("");
770 return AVERROR(ENOMEM);
772 oc->oformat = vs->oformat;
773 oc->interrupt_callback = s->interrupt_callback;
774 oc->max_delay = s->max_delay;
775 oc->opaque = s->opaque;
776 oc->io_open = s->io_open;
777 oc->io_close = s->io_close;
778 av_dict_copy(&oc->metadata, s->metadata, 0);
780 if (vs->vtt_oformat) {
781 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
784 vtt_oc = vs->vtt_avf;
785 vtt_oc->oformat = vs->vtt_oformat;
786 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
789 for (i = 0; i < vs->nb_streams; i++) {
791 AVFormatContext *loc;
792 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
797 if (!(st = avformat_new_stream(loc, NULL)))
798 return AVERROR(ENOMEM);
799 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
800 if (!oc->oformat->codec_tag ||
801 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
802 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
803 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
805 st->codecpar->codec_tag = 0;
808 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
809 st->time_base = vs->streams[i]->time_base;
810 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
813 vs->packets_written = 1;
817 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
818 if (hls->http_persistent > 0) {
819 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
820 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
822 if (hls->max_seg_size > 0) {
823 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
824 return AVERROR_PATCHWELCOME;
828 vs->packets_written = 0;
829 vs->init_range_length = 0;
830 set_http_options(s, &options, hls);
831 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
834 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
835 if (byterange_mode) {
836 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
838 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
841 av_dict_free(&options);
843 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
847 if (hls->format_options_str) {
848 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
850 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
851 hls->format_options_str);
856 av_dict_copy(&options, hls->format_options, 0);
857 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
858 av_dict_set(&options, "fflags", "-autobsf", 0);
859 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
860 ret = avformat_init_output(oc, &options);
863 if (av_dict_count(options)) {
864 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
865 av_dict_free(&options);
866 return AVERROR(EINVAL);
870 av_dict_free(&options);
874 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
877 if (!av_strcasecmp(segment->filename,filename))
879 segment = segment->next;
881 return (HLSSegment *) NULL;
884 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
885 VariantStream *vs, HLSSegment *en,
886 double duration, int64_t pos, int64_t size)
888 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
889 strlen(vs->current_segment_final_filename_fmt)) {
890 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
893 return AVERROR(ENOMEM);
895 ff_format_set_url(vs->avf, new_url);
896 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
897 char *filename = NULL;
898 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
899 av_log(hls, AV_LOG_ERROR,
900 "Invalid second level segment filename template '%s', "
901 "you can try to remove second_level_segment_size flag\n",
905 return AVERROR(EINVAL);
907 ff_format_set_url(vs->avf, filename);
909 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
910 char *filename = NULL;
911 if (replace_int_data_in_filename(&filename, vs->avf->url,
912 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
913 av_log(hls, AV_LOG_ERROR,
914 "Invalid second level segment filename template '%s', "
915 "you can try to remove second_level_segment_time flag\n",
919 return AVERROR(EINVAL);
921 ff_format_set_url(vs->avf, filename);
927 static int sls_flag_check_duration_size_index(HLSContext *hls)
931 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
932 av_log(hls, AV_LOG_ERROR,
933 "second_level_segment_duration hls_flag requires strftime to be true\n");
934 ret = AVERROR(EINVAL);
936 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
937 av_log(hls, AV_LOG_ERROR,
938 "second_level_segment_size hls_flag requires strfime to be true\n");
939 ret = AVERROR(EINVAL);
941 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
942 av_log(hls, AV_LOG_ERROR,
943 "second_level_segment_index hls_flag requires strftime to be true\n");
944 ret = AVERROR(EINVAL);
950 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
952 const char *proto = avio_find_protocol_name(vs->basename);
953 int segment_renaming_ok = proto && !strcmp(proto, "file");
956 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
957 av_log(hls, AV_LOG_ERROR,
958 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
959 ret = AVERROR(EINVAL);
961 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
962 av_log(hls, AV_LOG_ERROR,
963 "second_level_segment_size hls_flag works only with file protocol segment names\n");
964 ret = AVERROR(EINVAL);
970 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
971 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
972 strlen(vs->current_segment_final_filename_fmt)) {
973 ff_rename(old_filename, vs->avf->url, hls);
977 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
979 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
980 char *filename = NULL;
981 if (replace_int_data_in_filename(&filename,
983 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
985 oc->url, 'd', vs->sequence) < 1) {
987 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
988 "you can try to remove second_level_segment_index flag\n",
991 return AVERROR(EINVAL);
993 ff_format_set_url(oc, filename);
995 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
996 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
997 sizeof(vs->current_segment_final_filename_fmt));
998 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
999 char *filename = NULL;
1000 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1001 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1002 "you can try to remove second_level_segment_size flag\n",
1004 av_freep(&filename);
1005 return AVERROR(EINVAL);
1007 ff_format_set_url(oc, filename);
1009 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1010 char *filename = NULL;
1011 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1012 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1013 "you can try to remove second_level_segment_time flag\n",
1015 av_freep(&filename);
1016 return AVERROR(EINVAL);
1018 ff_format_set_url(oc, filename);
1024 /* Create a new segment and append it to the segment list */
1025 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1026 VariantStream *vs, double duration, int64_t pos,
1029 HLSSegment *en = av_malloc(sizeof(*en));
1030 const char *filename;
1031 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1035 return AVERROR(ENOMEM);
1037 en->var_stream_idx = vs->var_stream_idx;
1038 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1043 filename = av_basename(vs->avf->url);
1045 if (hls->use_localtime_mkdir) {
1046 filename = vs->avf->url;
1048 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1049 && !byterange_mode) {
1050 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1052 av_strlcpy(en->filename, filename, sizeof(en->filename));
1054 if (vs->has_subtitle)
1055 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1057 en->sub_filename[0] = '\0';
1059 en->duration = duration;
1062 en->keyframe_pos = vs->video_keyframe_pos;
1063 en->keyframe_size = vs->video_keyframe_size;
1067 if (vs->discontinuity) {
1069 vs->discontinuity = 0;
1072 if (hls->key_info_file || hls->encrypt) {
1073 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1074 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1080 vs->last_segment->next = en;
1082 vs->last_segment = en;
1084 // EVENT or VOD playlists imply sliding window cannot be used
1085 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1086 hls->max_nb_segments = 0;
1088 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1090 vs->initial_prog_date_time += en->duration;
1091 vs->segments = en->next;
1092 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1094 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1096 !(hls->flags & HLS_SINGLE_FILE)) {
1098 en->next = vs->old_segments;
1099 vs->old_segments = en;
1100 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1107 if (hls->max_seg_size > 0) {
1115 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1117 HLSContext *hls = s->priv_data;
1119 int ret = 0, is_segment = 0;
1120 int64_t new_start_pos;
1121 char line[MAX_URL_SIZE];
1125 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1126 &s->interrupt_callback, NULL,
1127 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1130 ff_get_chomp_line(in, line, sizeof(line));
1131 if (strcmp(line, "#EXTM3U")) {
1132 ret = AVERROR_INVALIDDATA;
1136 vs->discontinuity = 0;
1137 while (!avio_feof(in)) {
1138 ff_get_chomp_line(in, line, sizeof(line));
1139 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1140 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1141 if (tmp_sequence < vs->sequence)
1142 av_log(hls, AV_LOG_VERBOSE,
1143 "Found playlist sequence number was smaller """
1144 "than specified start sequence number: %"PRId64" < %"PRId64", "
1145 "omitting\n", tmp_sequence, hls->start_sequence);
1147 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1148 vs->sequence = tmp_sequence;
1150 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1152 vs->discontinuity = 1;
1153 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1155 vs->duration = atof(ptr);
1156 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1157 ptr = av_stristr(line, "URI=\"");
1159 ptr += strlen("URI=\"");
1160 end = av_stristr(ptr, ",");
1162 av_strlcpy(hls->key_uri, ptr, end - ptr);
1164 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1168 ptr = av_stristr(line, "IV=0x");
1170 ptr += strlen("IV=0x");
1171 end = av_stristr(ptr, ",");
1173 av_strlcpy(hls->iv_string, ptr, end - ptr);
1175 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1179 } else if (av_strstart(line, "#", NULL)) {
1181 } else if (line[0]) {
1183 char *new_file = av_strdup(line);
1185 ret = AVERROR(ENOMEM);
1188 ff_format_set_url(vs->avf, new_file);
1190 new_start_pos = avio_tell(vs->avf->pb);
1191 vs->size = new_start_pos - vs->start_pos;
1192 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1195 vs->start_pos = new_start_pos;
1205 static void hls_free_segments(HLSSegment *p)
1216 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1218 size_t len = strlen(oc->url);
1219 char *final_filename = av_strdup(oc->url);
1222 if (!final_filename)
1223 return AVERROR(ENOMEM);
1224 final_filename[len-4] = '\0';
1225 ret = ff_rename(oc->url, final_filename, s);
1226 oc->url[len-4] = '\0';
1227 av_freep(&final_filename);
1231 static const char* get_relative_url(const char *master_url, const char *media_url)
1233 const char *p = strrchr(master_url, '/');
1234 size_t base_len = 0;
1236 if (!p) p = strrchr(master_url, '\\');
1239 base_len = p + 1 - master_url;
1240 if (av_strncasecmp(master_url, media_url, base_len)) {
1241 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1246 return media_url + base_len;
1249 static int64_t get_stream_bit_rate(AVStream *stream)
1251 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1253 AV_PKT_DATA_CPB_PROPERTIES,
1257 if (stream->codecpar->bit_rate)
1258 return stream->codecpar->bit_rate;
1260 return props->max_bitrate;
1265 static int create_master_playlist(AVFormatContext *s,
1266 VariantStream * const input_vs)
1268 HLSContext *hls = s->priv_data;
1269 VariantStream *vs, *temp_vs;
1270 AVStream *vid_st, *aud_st;
1271 AVDictionary *options = NULL;
1274 const char *m3u8_rel_name = NULL;
1276 ClosedCaptionsStream *ccs;
1277 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1278 int is_file_proto = proto && !strcmp(proto, "file");
1279 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1280 char temp_filename[MAX_URL_SIZE];
1282 input_vs->m3u8_created = 1;
1283 if (!hls->master_m3u8_created) {
1284 /* For the first time, wait until all the media playlists are created */
1285 for (i = 0; i < hls->nb_varstreams; i++)
1286 if (!hls->var_streams[i].m3u8_created)
1289 /* Keep publishing the master playlist at the configured rate */
1290 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1291 input_vs->number % hls->master_publish_rate)
1295 set_http_options(s, &options, hls);
1296 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1297 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1298 av_dict_free(&options);
1300 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1305 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1307 for (i = 0; i < hls->nb_ccstreams; i++) {
1308 ccs = &(hls->cc_streams[i]);
1309 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1310 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1311 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1313 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1314 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1317 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1318 for (i = 0; i < hls->nb_varstreams; i++) {
1319 vs = &(hls->var_streams[i]);
1321 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1324 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1325 if (!m3u8_rel_name) {
1326 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1330 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1333 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1334 for (i = 0; i < hls->nb_varstreams; i++) {
1335 vs = &(hls->var_streams[i]);
1337 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1338 if (!m3u8_rel_name) {
1339 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1345 for (j = 0; j < vs->nb_streams; j++) {
1346 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1347 vid_st = vs->streams[j];
1348 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1349 aud_st = vs->streams[j];
1352 if (!vid_st && !aud_st) {
1353 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1358 * Traverse through the list of audio only rendition streams and find
1359 * the rendition which has highest bitrate in the same audio group
1362 for (j = 0; j < hls->nb_varstreams; j++) {
1363 temp_vs = &(hls->var_streams[j]);
1364 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1366 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1368 aud_st = temp_vs->streams[0];
1369 if (temp_vs->streams[0]->codecpar->bit_rate >
1370 aud_st->codecpar->bit_rate)
1371 aud_st = temp_vs->streams[0];
1378 bandwidth += get_stream_bit_rate(vid_st);
1380 bandwidth += get_stream_bit_rate(aud_st);
1381 bandwidth += bandwidth / 10;
1384 if (vid_st && vs->ccgroup) {
1385 /* check if this group name is available in the cc map string */
1386 for (j = 0; j < hls->nb_ccstreams; j++) {
1387 ccs = &(hls->cc_streams[j]);
1388 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1389 ccgroup = vs->ccgroup;
1393 if (j == hls->nb_ccstreams)
1394 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1398 if (!hls->has_default_key || !hls->has_video_m3u8) {
1399 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1400 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1403 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1404 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1410 hls->master_m3u8_created = 1;
1411 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1413 ff_rename(temp_filename, hls->master_m3u8_url, s);
1418 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1420 HLSContext *hls = s->priv_data;
1422 int target_duration = 0;
1424 char temp_filename[MAX_URL_SIZE];
1425 char temp_vtt_filename[MAX_URL_SIZE];
1426 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1427 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1428 int is_file_proto = proto && !strcmp(proto, "file");
1429 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1430 static unsigned warned_non_file;
1431 char *key_uri = NULL;
1432 char *iv_string = NULL;
1433 AVDictionary *options = NULL;
1434 double prog_date_time = vs->initial_prog_date_time;
1435 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1436 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1439 if (byterange_mode) {
1444 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1448 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1452 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1453 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1455 set_http_options(s, &options, hls);
1456 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1457 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1458 if (hls->ignore_io_errors)
1463 for (en = vs->segments; en; en = en->next) {
1464 if (target_duration <= en->duration)
1465 target_duration = lrint(en->duration);
1468 vs->discontinuity_set = 0;
1469 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1470 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1472 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1473 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1474 vs->discontinuity_set = 1;
1476 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1477 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1479 for (en = vs->segments; en; en = en->next) {
1480 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1481 av_strcasecmp(en->iv_string, iv_string))) {
1482 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1484 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1485 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1486 key_uri = en->key_uri;
1487 iv_string = en->iv_string;
1490 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1491 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1492 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1495 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1496 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1497 en->size, en->pos, vs->baseurl,
1498 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1500 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1504 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1505 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1507 if (vs->vtt_m3u8_name) {
1508 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1509 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1510 if (hls->ignore_io_errors)
1514 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1515 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1516 for (en = vs->segments; en; en = en->next) {
1517 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1518 en->duration, 0, en->size, en->pos,
1519 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1521 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1526 ff_hls_write_end_list(hls->sub_m3u8_out);
1531 av_dict_free(&options);
1532 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1536 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1537 if (use_temp_file) {
1538 ff_rename(temp_filename, vs->m3u8_name, s);
1539 if (vs->vtt_m3u8_name)
1540 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1542 if (ret >= 0 && hls->master_pl_name)
1543 if (create_master_playlist(s, vs) < 0)
1544 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1549 static int hls_start(AVFormatContext *s, VariantStream *vs)
1551 HLSContext *c = s->priv_data;
1552 AVFormatContext *oc = vs->avf;
1553 AVFormatContext *vtt_oc = vs->vtt_avf;
1554 AVDictionary *options = NULL;
1555 const char *proto = NULL;
1556 int use_temp_file = 0;
1557 char iv_string[KEYSIZE*2 + 1];
1560 if (c->flags & HLS_SINGLE_FILE) {
1561 char *new_name = av_strdup(vs->basename);
1563 return AVERROR(ENOMEM);
1564 ff_format_set_url(oc, new_name);
1565 if (vs->vtt_basename) {
1566 new_name = av_strdup(vs->vtt_basename);
1568 return AVERROR(ENOMEM);
1569 ff_format_set_url(vtt_oc, new_name);
1571 } else if (c->max_seg_size > 0) {
1572 char *filename = NULL;
1573 if (replace_int_data_in_filename(&filename,
1575 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1577 vs->basename, 'd', vs->sequence) < 1) {
1579 av_freep(&filename);
1580 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1581 return AVERROR(EINVAL);
1583 ff_format_set_url(oc, filename);
1585 if (c->use_localtime) {
1587 struct tm *tm, tmpbuf;
1588 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1589 char *buf = av_mallocz(bufsize);
1591 return AVERROR(ENOMEM);
1593 tm = localtime_r(&now0, &tmpbuf);
1594 ff_format_set_url(oc, buf);
1595 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1596 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1597 return AVERROR(EINVAL);
1600 err = sls_flag_use_localtime_filename(oc, c, vs);
1602 return AVERROR(ENOMEM);
1605 if (c->use_localtime_mkdir) {
1607 char *fn_copy = av_strdup(oc->url);
1608 dir = av_dirname(fn_copy);
1609 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1610 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1612 return AVERROR(errno);
1617 char *filename = NULL;
1618 if (replace_int_data_in_filename(&filename,
1620 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1622 vs->basename, 'd', vs->sequence) < 1) {
1624 av_freep(&filename);
1625 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1626 return AVERROR(EINVAL);
1628 ff_format_set_url(oc, filename);
1630 if ( vs->vtt_basename) {
1631 char *filename = NULL;
1632 if (replace_int_data_in_filename(&filename,
1634 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1636 vs->vtt_basename, 'd', vs->sequence) < 1) {
1638 av_freep(&filename);
1639 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1640 return AVERROR(EINVAL);
1642 ff_format_set_url(vtt_oc, filename);
1647 set_http_options(s, &options, c);
1649 proto = avio_find_protocol_name(oc->url);
1650 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1652 if (use_temp_file) {
1653 char *new_name = av_asprintf("%s.tmp", oc->url);
1655 return AVERROR(ENOMEM);
1656 ff_format_set_url(oc, new_name);
1659 if (c->key_info_file || c->encrypt) {
1660 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1661 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1662 return AVERROR_PATCHWELCOME;
1665 if (c->key_info_file && c->encrypt) {
1666 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1667 " ignoring -hls_enc\n");
1670 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1671 if (c->key_info_file) {
1672 if ((err = hls_encryption_start(s)) < 0)
1675 if ((err = do_encrypt(s, vs)) < 0)
1678 c->encrypt_started = 1;
1680 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1682 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1683 memset(c->iv_string, 0, sizeof(c->iv_string));
1684 memcpy(c->iv_string, iv_string, sizeof(iv_string));
1687 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1688 /* We only require one PAT/PMT per segment. */
1689 if (oc->oformat->priv_class && oc->priv_data) {
1692 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1694 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1695 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1696 av_opt_set(oc->priv_data, "pat_period", period, 0);
1698 if (c->flags & HLS_SINGLE_FILE) {
1699 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1700 if (c->ignore_io_errors)
1706 if (vs->vtt_basename) {
1707 set_http_options(s, &options, c);
1708 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1709 if (c->ignore_io_errors)
1714 av_dict_free(&options);
1716 if (vs->vtt_basename) {
1717 err = avformat_write_header(vtt_oc,NULL);
1724 av_dict_free(&options);
1729 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1732 time_t t = time(NULL);
1733 struct tm *p, tmbuf;
1734 HLSContext *hls = s->priv_data;
1736 p = localtime_r(&t, &tmbuf);
1737 // no %s support when strftime returned error or left format string unchanged
1738 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1739 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1740 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1742 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1745 static int append_postfix(char *name, int name_buf_len, int i)
1748 char extension[10] = {'\0'};
1750 p = strrchr(name, '.');
1752 av_strlcpy(extension, p, sizeof(extension));
1756 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1758 if (strlen(extension))
1759 av_strlcat(name, extension, name_buf_len);
1764 static int validate_name(int nb_vs, const char *fn)
1766 const char *filename, *subdir_name;
1767 char *fn_dup = NULL;
1771 ret = AVERROR(EINVAL);
1775 fn_dup = av_strdup(fn);
1776 filename = av_basename(fn);
1777 subdir_name = av_dirname(fn_dup);
1779 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1780 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1781 "either in the filename or in the sub-directory name of file %s\n", fn);
1782 ret = AVERROR(EINVAL);
1786 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1787 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1788 "in the sub-directory name of file %s, but only in one of them\n", fn);
1789 ret = AVERROR(EINVAL);
1798 static int format_name(const char *buf, char **s, int index, const char *varname)
1800 const char *proto, *dir;
1801 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1804 orig_buf_dup = av_strdup(buf);
1805 if (!orig_buf_dup) {
1806 ret = AVERROR(ENOMEM);
1810 if (!av_stristr(buf, "%v")) {
1816 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1817 ret = AVERROR(EINVAL);
1821 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1822 ret = AVERROR(EINVAL);
1827 proto = avio_find_protocol_name(orig_buf_dup);
1828 dir = av_dirname(orig_buf_dup);
1830 /* if %v is present in the file's directory, create sub-directory */
1831 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1832 mod_buf_dup = av_strdup(*s);
1833 dir = av_dirname(mod_buf_dup);
1834 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1835 ret = AVERROR(errno);
1841 av_freep(&orig_buf_dup);
1842 av_freep(&mod_buf_dup);
1846 static int get_nth_codec_stream_index(AVFormatContext *s,
1847 enum AVMediaType codec_type,
1850 unsigned int stream_index, cnt;
1851 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1854 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1855 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1857 if (cnt == stream_id)
1858 return stream_index;
1864 static int parse_variant_stream_mapstring(AVFormatContext *s)
1866 HLSContext *hls = s->priv_data;
1868 int stream_index, i, j;
1869 enum AVMediaType codec_type;
1870 int nb_varstreams, nb_streams;
1871 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1875 * Expected format for var_stream_map string is as below:
1877 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1878 * This string specifies how to group the audio, video and subtitle streams
1879 * into different variant streams. The variant stream groups are separated
1882 * a:, v:, s: are keys to specify audio, video and subtitle streams
1883 * respectively. Allowed values are 0 to 9 digits (limited just based on
1886 * agroup: is key to specify audio group. A string can be given as value.
1888 p = av_strdup(hls->var_stream_map);
1890 return AVERROR(ENOMEM);
1893 while (av_strtok(q, " \t", &saveptr1)) {
1895 hls->nb_varstreams++;
1899 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1900 if (!hls->var_streams)
1901 return AVERROR(ENOMEM);
1903 p = hls->var_stream_map;
1905 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1908 if (nb_varstreams < hls->nb_varstreams) {
1909 vs = &(hls->var_streams[nb_varstreams]);
1910 vs->var_stream_idx = nb_varstreams;
1914 return AVERROR(EINVAL);
1917 while (q < varstr + strlen(varstr)) {
1918 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1919 !av_strncasecmp(q, "s:", 2))
1923 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1925 return AVERROR(ENOMEM);
1928 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1930 if (av_strstart(keyval, "language:", &val)) {
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 vs->varname = av_strdup(val);
1943 return AVERROR(ENOMEM);
1945 } else if (av_strstart(keyval, "agroup:", &val)) {
1946 vs->agroup = av_strdup(val);
1948 return AVERROR(ENOMEM);
1950 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1951 vs->ccgroup = av_strdup(val);
1953 return AVERROR(ENOMEM);
1955 } else if (av_strstart(keyval, "v:", &val)) {
1956 codec_type = AVMEDIA_TYPE_VIDEO;
1957 hls->has_video_m3u8 = 1;
1958 } else if (av_strstart(keyval, "a:", &val)) {
1959 codec_type = AVMEDIA_TYPE_AUDIO;
1960 } else if (av_strstart(keyval, "s:", &val)) {
1961 codec_type = AVMEDIA_TYPE_SUBTITLE;
1963 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1964 return AVERROR(EINVAL);
1968 if (av_isdigit(*val))
1969 stream_index = get_nth_codec_stream_index (s, codec_type,
1972 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1973 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
1974 if (vs->streams[i] == s->streams[stream_index]) {
1975 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
1976 "variant definition #%d\n", nb_varstreams - 1);
1977 return AVERROR(EINVAL);
1980 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
1981 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
1982 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
1983 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
1984 "in two different variant definitions #%d and #%d\n",
1985 j, nb_varstreams - 1);
1986 return AVERROR(EINVAL);
1990 vs->streams[nb_streams++] = s->streams[stream_index];
1992 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1993 return AVERROR(EINVAL);
1997 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1998 hls->nb_varstreams);
2003 static int parse_cc_stream_mapstring(AVFormatContext *s)
2005 HLSContext *hls = s->priv_data;
2007 char *p, *q, *ccstr, *keyval;
2008 char *saveptr1 = NULL, *saveptr2 = NULL;
2010 ClosedCaptionsStream *ccs;
2012 p = av_strdup(hls->cc_stream_map);
2014 return AVERROR(ENOMEM);
2017 while (av_strtok(q, " \t", &saveptr1)) {
2019 hls->nb_ccstreams++;
2023 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
2024 if (!hls->cc_streams)
2025 return AVERROR(ENOMEM);
2027 p = hls->cc_stream_map;
2029 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2032 if (nb_ccstreams < hls->nb_ccstreams)
2033 ccs = &(hls->cc_streams[nb_ccstreams++]);
2035 return AVERROR(EINVAL);
2037 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2040 if (av_strstart(keyval, "ccgroup:", &val)) {
2041 ccs->ccgroup = av_strdup(val);
2043 return AVERROR(ENOMEM);
2044 } else if (av_strstart(keyval, "instreamid:", &val)) {
2045 ccs->instreamid = av_strdup(val);
2046 if (!ccs->instreamid)
2047 return AVERROR(ENOMEM);
2048 } else if (av_strstart(keyval, "language:", &val)) {
2049 ccs->language = av_strdup(val);
2051 return AVERROR(ENOMEM);
2053 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2054 return AVERROR(EINVAL);
2058 if (!ccs->ccgroup || !ccs->instreamid) {
2059 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2060 return AVERROR(EINVAL);
2063 if (av_strstart(ccs->instreamid, "CC", &val)) {
2064 if (atoi(val) < 1 || atoi(val) > 4) {
2065 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2066 atoi(val), ccs->instreamid);
2067 return AVERROR(EINVAL);
2069 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2070 if (atoi(val) < 1 || atoi(val) > 63) {
2071 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2072 atoi(val), ccs->instreamid);
2073 return AVERROR(EINVAL);
2076 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
2078 return AVERROR(EINVAL);
2085 static int update_variant_stream_info(AVFormatContext *s)
2087 HLSContext *hls = s->priv_data;
2091 if (hls->cc_stream_map) {
2092 ret = parse_cc_stream_mapstring(s);
2097 if (hls->var_stream_map) {
2098 return parse_variant_stream_mapstring(s);
2100 //By default, a single variant stream with all the codec streams is created
2101 hls->nb_varstreams = 1;
2102 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
2103 hls->nb_varstreams);
2104 if (!hls->var_streams)
2105 return AVERROR(ENOMEM);
2107 hls->var_streams[0].var_stream_idx = 0;
2108 hls->var_streams[0].nb_streams = s->nb_streams;
2109 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2110 hls->var_streams[0].nb_streams);
2111 if (!hls->var_streams[0].streams) {
2112 av_freep(&hls->var_streams);
2113 return AVERROR(ENOMEM);
2116 //by default, the first available ccgroup is mapped to the variant stream
2117 if (hls->nb_ccstreams) {
2118 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2119 if (!hls->var_streams[0].ccgroup) {
2120 av_freep(&hls->var_streams);
2121 return AVERROR(ENOMEM);
2125 for (i = 0; i < s->nb_streams; i++)
2126 hls->var_streams[0].streams[i] = s->streams[i];
2131 static int update_master_pl_info(AVFormatContext *s)
2133 HLSContext *hls = s->priv_data;
2135 char *fn1= NULL, *fn2 = NULL;
2138 fn1 = av_strdup(s->url);
2139 dir = av_dirname(fn1);
2142 * if output file's directory has %v, variants are created in sub-directories
2143 * then master is created at the sub-directories level
2145 if (dir && av_stristr(av_basename(dir), "%v")) {
2146 fn2 = av_strdup(dir);
2147 dir = av_dirname(fn2);
2150 if (dir && strcmp(dir, "."))
2151 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2153 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2155 if (!hls->master_m3u8_url) {
2156 ret = AVERROR(ENOMEM);
2167 static int hls_write_header(AVFormatContext *s)
2169 HLSContext *hls = s->priv_data;
2171 VariantStream *vs = NULL;
2173 for (i = 0; i < hls->nb_varstreams; i++) {
2174 vs = &hls->var_streams[i];
2176 ret = avformat_write_header(vs->avf, NULL);
2179 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2180 for (j = 0; j < vs->nb_streams; j++) {
2182 AVStream *outer_st = vs->streams[j];
2184 if (hls->max_seg_size > 0) {
2185 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2186 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2187 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2188 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2189 outer_st->codecpar->bit_rate, hls->max_seg_size);
2193 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2194 inner_st = vs->avf->streams[j];
2195 else if (vs->vtt_avf)
2196 inner_st = vs->vtt_avf->streams[0];
2198 /* We have a subtitle stream, when the user does not want one */
2202 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2203 write_codec_attr(outer_st, vs);
2206 /* Update the Codec Attr string for the mapped audio groups */
2207 if (vs->has_video && vs->agroup) {
2208 for (j = 0; j < hls->nb_varstreams; j++) {
2209 VariantStream *vs_agroup = &(hls->var_streams[j]);
2210 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2211 vs_agroup->agroup &&
2212 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2213 write_codec_attr(vs_agroup->streams[0], vs);
2222 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2224 HLSContext *hls = s->priv_data;
2225 AVFormatContext *oc = NULL;
2226 AVStream *st = s->streams[pkt->stream_index];
2227 int64_t end_pts = 0;
2229 int ret = 0, can_split = 1, i, j;
2230 int stream_index = 0;
2231 int range_length = 0;
2232 const char *proto = NULL;
2233 int use_temp_file = 0;
2234 uint8_t *buffer = NULL;
2235 VariantStream *vs = NULL;
2236 AVDictionary *options = NULL;
2237 char *old_filename = NULL;
2239 for (i = 0; i < hls->nb_varstreams; i++) {
2240 vs = &hls->var_streams[i];
2241 for (j = 0; j < vs->nb_streams; j++) {
2242 if (vs->streams[j] == st) {
2243 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2259 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2260 return AVERROR(ENOMEM);
2263 end_pts = hls->recording_time * vs->number;
2265 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2266 /* reset end_pts, hls->recording_time at end of the init hls list */
2267 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2268 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2269 hls->recording_time = hls->time * AV_TIME_BASE;
2270 end_pts = init_list_dur + after_init_list_dur ;
2273 if (vs->start_pts == AV_NOPTS_VALUE) {
2274 vs->start_pts = pkt->pts;
2277 if (vs->has_video) {
2278 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2279 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2280 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2282 if (pkt->pts == AV_NOPTS_VALUE)
2283 is_ref_pkt = can_split = 0;
2286 if (vs->end_pts == AV_NOPTS_VALUE)
2287 vs->end_pts = pkt->pts;
2288 if (vs->new_start) {
2290 vs->duration = (double)(pkt->pts - vs->end_pts)
2291 * st->time_base.num / st->time_base.den;
2292 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2294 if (pkt->duration) {
2295 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2297 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2298 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2304 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2305 end_pts, AV_TIME_BASE_Q) >= 0) {
2306 int64_t new_start_pos;
2307 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2309 av_write_frame(oc, NULL); /* Flush any buffered data */
2310 new_start_pos = avio_tell(oc->pb);
2311 vs->size = new_start_pos - vs->start_pos;
2313 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2314 if (!vs->init_range_length) {
2315 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2316 avio_write(vs->out, buffer, range_length);
2318 vs->init_range_length = range_length;
2319 avio_open_dyn_buf(&oc->pb);
2320 vs->packets_written = 0;
2321 vs->start_pos = range_length;
2322 if (!byterange_mode) {
2323 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2327 if (!byterange_mode) {
2329 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2334 proto = avio_find_protocol_name(oc->url);
2335 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2338 // look to rename the asset name
2339 if (use_temp_file) {
2340 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2343 if (hls->flags & HLS_SINGLE_FILE) {
2344 ret = flush_dynbuf(vs, &range_length);
2345 av_freep(&vs->temp_buffer);
2349 vs->size = range_length;
2351 set_http_options(s, &options, hls);
2352 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2353 char *filename = NULL;
2354 if (hls->key_info_file || hls->encrypt) {
2355 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2356 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2357 filename = av_asprintf("crypto:%s", oc->url);
2359 filename = av_asprintf("%s", oc->url);
2362 return AVERROR(ENOMEM);
2364 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2366 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2367 "Failed to open file '%s'\n", filename);
2368 return hls->ignore_io_errors ? 0 : ret;
2370 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2371 write_styp(vs->out);
2373 ret = flush_dynbuf(vs, &range_length);
2377 ret = hlsenc_io_close(s, &vs->out, filename);
2379 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2380 " will retry with a new http session.\n");
2381 ff_format_io_close(s, &vs->out);
2382 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2383 reflush_dynbuf(vs, &range_length);
2384 ret = hlsenc_io_close(s, &vs->out, filename);
2386 av_freep(&vs->temp_buffer);
2387 av_freep(&filename);
2391 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2392 hls_rename_temp_file(s, oc);
2395 old_filename = av_strdup(oc->url);
2396 if (!old_filename) {
2397 return AVERROR(ENOMEM);
2400 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2401 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2402 vs->end_pts = pkt->pts;
2405 av_freep(&old_filename);
2410 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2411 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2412 if ((ret = hls_window(s, 0, vs)) < 0) {
2413 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2414 ff_format_io_close(s, &vs->out);
2416 if ((ret = hls_window(s, 0, vs)) < 0) {
2417 av_freep(&old_filename);
2423 if (hls->flags & HLS_SINGLE_FILE) {
2425 vs->start_pos += vs->size;
2426 } else if (hls->max_seg_size > 0) {
2427 vs->start_pos = new_start_pos;
2428 if (vs->size >= hls->max_seg_size) {
2430 sls_flag_file_rename(hls, vs, old_filename);
2431 ret = hls_start(s, vs);
2433 /* When split segment by byte, the duration is short than hls_time,
2434 * so it is not enough one segment duration as hls_time, */
2439 vs->start_pos = new_start_pos;
2440 sls_flag_file_rename(hls, vs, old_filename);
2441 ret = hls_start(s, vs);
2443 av_freep(&old_filename);
2451 vs->packets_written++;
2453 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2454 vs->video_keyframe_size += pkt->size;
2455 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2456 vs->video_keyframe_size = avio_tell(oc->pb);
2458 vs->video_keyframe_pos = avio_tell(vs->out);
2460 if (hls->ignore_io_errors)
2467 static void hls_free_variant_streams(struct HLSContext *hls)
2470 AVFormatContext *vtt_oc = NULL;
2471 VariantStream *vs = NULL;
2473 for (i = 0; i < hls->nb_varstreams; i++) {
2474 vs = &hls->var_streams[i];
2475 vtt_oc = vs->vtt_avf;
2477 av_freep(&vs->basename);
2478 av_freep(&vs->base_output_dirname);
2479 av_freep(&vs->fmp4_init_filename);
2481 av_freep(&vs->vtt_basename);
2482 av_freep(&vs->vtt_m3u8_name);
2485 hls_free_segments(vs->segments);
2486 hls_free_segments(vs->old_segments);
2487 av_freep(&vs->m3u8_name);
2488 av_freep(&vs->streams);
2489 av_freep(&vs->agroup);
2490 av_freep(&vs->language);
2491 av_freep(&vs->ccgroup);
2492 av_freep(&vs->baseurl);
2493 av_freep(&vs->varname);
2497 static int hls_write_trailer(struct AVFormatContext *s)
2499 HLSContext *hls = s->priv_data;
2500 AVFormatContext *oc = NULL;
2501 AVFormatContext *vtt_oc = NULL;
2502 char *old_filename = NULL;
2503 const char *proto = NULL;
2504 int use_temp_file = 0;
2507 VariantStream *vs = NULL;
2508 AVDictionary *options = NULL;
2509 int range_length, byterange_mode;
2511 for (i = 0; i < hls->nb_varstreams; i++) {
2512 char *filename = NULL;
2513 vs = &hls->var_streams[i];
2515 vtt_oc = vs->vtt_avf;
2516 old_filename = av_strdup(oc->url);
2519 if (!old_filename) {
2520 return AVERROR(ENOMEM);
2522 if (hls->key_info_file || hls->encrypt) {
2523 av_dict_set(&options, "encryption_key", hls->key_string, 0);
2524 av_dict_set(&options, "encryption_iv", hls->iv_string, 0);
2525 filename = av_asprintf("crypto:%s", oc->url);
2527 filename = av_asprintf("%s", oc->url);
2530 av_freep(&old_filename);
2531 return AVERROR(ENOMEM);
2534 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2535 int range_length = 0;
2536 if (!vs->init_range_length) {
2537 uint8_t *buffer = NULL;
2538 av_write_frame(oc, NULL); /* Flush any buffered data */
2541 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2542 avio_write(vs->out, buffer, range_length);
2544 vs->init_range_length = range_length;
2545 avio_open_dyn_buf(&oc->pb);
2546 vs->packets_written = 0;
2547 vs->start_pos = range_length;
2548 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2549 if (!byterange_mode) {
2550 ff_format_io_close(s, &vs->out);
2551 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2555 if (!(hls->flags & HLS_SINGLE_FILE)) {
2556 set_http_options(s, &options, hls);
2557 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2559 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2562 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2563 write_styp(vs->out);
2565 ret = flush_dynbuf(vs, &range_length);
2569 vs->size = range_length;
2570 hlsenc_io_close(s, &vs->out, filename);
2571 ret = hlsenc_io_close(s, &vs->out, filename);
2573 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2574 ff_format_io_close(s, &vs->out);
2575 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2577 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2580 reflush_dynbuf(vs, &range_length);
2581 ret = hlsenc_io_close(s, &vs->out, filename);
2583 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2585 av_freep(&vs->temp_buffer);
2588 av_freep(&filename);
2589 av_write_trailer(oc);
2591 proto = avio_find_protocol_name(oc->url);
2592 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2595 // rename that segment from .tmp to the real one
2596 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2597 hls_rename_temp_file(s, oc);
2598 av_freep(&old_filename);
2599 old_filename = av_strdup(oc->url);
2601 if (!old_filename) {
2602 return AVERROR(ENOMEM);
2606 /* after av_write_trailer, then duration + 1 duration per packet */
2607 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2609 sls_flag_file_rename(hls, vs, old_filename);
2613 av_write_trailer(vtt_oc);
2614 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2615 ff_format_io_close(s, &vtt_oc->pb);
2616 avformat_free_context(vtt_oc);
2618 ret = hls_window(s, 1, vs);
2620 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2621 ff_format_io_close(s, &vs->out);
2622 hls_window(s, 1, vs);
2624 ffio_free_dyn_buf(&oc->pb);
2625 avformat_free_context(oc);
2628 av_free(old_filename);
2631 hls_free_variant_streams(hls);
2633 for (i = 0; i < hls->nb_ccstreams; i++) {
2634 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2635 av_freep(&ccs->ccgroup);
2636 av_freep(&ccs->instreamid);
2637 av_freep(&ccs->language);
2640 ff_format_io_close(s, &hls->m3u8_out);
2641 ff_format_io_close(s, &hls->sub_m3u8_out);
2642 av_freep(&hls->key_basename);
2643 av_freep(&hls->var_streams);
2644 av_freep(&hls->cc_streams);
2645 av_freep(&hls->master_m3u8_url);
2650 static int hls_init(AVFormatContext *s)
2655 HLSContext *hls = s->priv_data;
2656 const char *pattern = "%d.ts";
2657 VariantStream *vs = NULL;
2658 int basename_size = 0;
2659 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2660 const char *vtt_pattern = "%d.vtt";
2662 int vtt_basename_size = 0;
2663 int http_base_proto = ff_is_http_proto(s->url);
2664 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2666 hls->has_default_key = 0;
2667 hls->has_video_m3u8 = 0;
2668 ret = update_variant_stream_info(s);
2670 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2674 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2675 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2676 ret = AVERROR(EINVAL);
2677 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2681 if (!hls->method && http_base_proto) {
2682 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2685 ret = validate_name(hls->nb_varstreams, s->url);
2689 if (hls->segment_filename) {
2690 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2695 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2696 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2701 if (hls->subtitle_filename) {
2702 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2707 if (hls->master_pl_name) {
2708 ret = update_master_pl_info(s);
2710 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2716 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2719 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2720 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2721 time_t t = time(NULL); // we will need it in either case
2722 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2723 hls->start_sequence = (int64_t)t;
2724 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2726 struct tm *p, tmbuf;
2727 if (!(p = localtime_r(&t, &tmbuf)))
2728 return AVERROR(ENOMEM);
2729 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2730 return AVERROR(ENOMEM);
2731 hls->start_sequence = strtoll(b, NULL, 10);
2733 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2736 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2737 for (i = 0; i < hls->nb_varstreams; i++) {
2738 vs = &hls->var_streams[i];
2740 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2744 vs->sequence = hls->start_sequence;
2745 vs->start_pts = AV_NOPTS_VALUE;
2746 vs->end_pts = AV_NOPTS_VALUE;
2747 vs->current_segment_final_filename_fmt[0] = '\0';
2749 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2750 // Independent segments cannot be guaranteed when splitting by time
2751 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2752 av_log(s, AV_LOG_WARNING,
2753 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2754 "Disabling 'independent_segments' flag\n");
2757 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2760 vs->initial_prog_date_time = now0;
2762 if (hls->format_options_str) {
2763 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2765 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2770 for (j = 0; j < vs->nb_streams; j++) {
2771 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2772 /* Get one video stream to reference for split segments
2773 * so use the first video stream index. */
2774 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2775 vs->reference_stream_index = vs->streams[j]->index;
2777 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2780 if (vs->has_video > 1)
2781 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2782 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2783 vs->oformat = av_guess_format("mp4", NULL, NULL);
2785 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2789 ret = AVERROR_MUXER_NOT_FOUND;
2793 if (vs->has_subtitle) {
2794 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2796 ret = AVERROR_MUXER_NOT_FOUND;
2800 if (hls->segment_filename) {
2801 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2805 if (hls->flags & HLS_SINGLE_FILE) {
2806 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2813 if (hls->use_localtime) {
2814 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2816 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2819 vs->basename = av_malloc(basename_size);
2820 if (!vs->basename) {
2821 ret = AVERROR(ENOMEM);
2825 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2827 p = strrchr(vs->basename, '.');
2830 if (hls->use_localtime) {
2831 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2833 av_strlcat(vs->basename, pattern, basename_size);
2837 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2838 if (hls->nb_varstreams > 1)
2839 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2840 if (hls->flags & HLS_SINGLE_FILE) {
2841 vs->fmp4_init_filename = av_strdup(vs->basename);
2842 if (!vs->fmp4_init_filename) {
2843 ret = AVERROR(ENOMEM);
2847 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2848 if (!vs->fmp4_init_filename ) {
2849 ret = AVERROR(ENOMEM);
2852 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2853 fmp4_init_filename_len);
2854 if (hls->nb_varstreams > 1) {
2855 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2856 av_freep(&vs->fmp4_init_filename);
2857 format_name(hls->fmp4_init_filename, &vs->fmp4_init_filename, i, vs->varname);
2859 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2865 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2866 strlen(vs->fmp4_init_filename) + 1;
2868 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2869 if (!vs->base_output_dirname) {
2870 ret = AVERROR(ENOMEM);
2874 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2875 fmp4_init_filename_len);
2876 p = strrchr(vs->base_output_dirname, '/');
2879 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2880 fmp4_init_filename_len);
2882 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2883 fmp4_init_filename_len);
2888 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2892 if (vs->has_subtitle) {
2894 if (hls->flags & HLS_SINGLE_FILE)
2895 vtt_pattern = ".vtt";
2896 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2898 vs->vtt_basename = av_malloc(vtt_basename_size);
2899 if (!vs->vtt_basename) {
2900 ret = AVERROR(ENOMEM);
2903 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2904 if (!vs->vtt_m3u8_name ) {
2905 ret = AVERROR(ENOMEM);
2908 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2909 p = strrchr(vs->vtt_basename, '.');
2913 if ( hls->subtitle_filename ) {
2914 av_freep(&vs->vtt_m3u8_name);
2915 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2919 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2920 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2922 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2926 vs->baseurl = av_strdup(hls->baseurl);
2928 ret = AVERROR(ENOMEM);
2933 if ((ret = hls_mux_init(s, vs)) < 0)
2936 if (hls->flags & HLS_APPEND_LIST) {
2937 parse_playlist(s, vs->m3u8_name, vs);
2938 vs->discontinuity = 1;
2939 if (hls->init_time > 0) {
2940 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2941 " hls_init_time value will have no effect\n");
2943 hls->recording_time = hls->time * AV_TIME_BASE;
2947 if ((ret = hls_start(s, vs)) < 0)
2953 av_freep(&hls->key_basename);
2954 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2955 vs = &hls->var_streams[i];
2956 av_freep(&vs->basename);
2957 av_freep(&vs->vtt_basename);
2958 av_freep(&vs->fmp4_init_filename);
2959 av_freep(&vs->m3u8_name);
2960 av_freep(&vs->vtt_m3u8_name);
2961 av_freep(&vs->streams);
2962 av_freep(&vs->language);
2963 av_freep(&vs->agroup);
2964 av_freep(&vs->ccgroup);
2965 av_freep(&vs->baseurl);
2966 av_freep(&vs->varname);
2968 avformat_free_context(vs->avf);
2970 avformat_free_context(vs->vtt_avf);
2972 for (i = 0; i < hls->nb_ccstreams; i++) {
2973 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2974 av_freep(&ccs->ccgroup);
2975 av_freep(&ccs->instreamid);
2976 av_freep(&ccs->language);
2978 av_freep(&hls->var_streams);
2979 av_freep(&hls->cc_streams);
2980 av_freep(&hls->master_m3u8_url);
2986 #define OFFSET(x) offsetof(HLSContext, x)
2987 #define E AV_OPT_FLAG_ENCODING_PARAM
2988 static const AVOption options[] = {
2989 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2990 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2991 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2992 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2993 {"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},
2994 {"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},
2995 {"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},
2997 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2999 {"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},
3000 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3001 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3002 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3003 {"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},
3004 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3005 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3006 {"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},
3007 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3008 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3009 {"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"},
3010 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3011 {"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"},
3012 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3013 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3014 {"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"},
3015 {"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"},
3016 {"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"},
3017 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3018 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3019 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3020 {"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"},
3021 {"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"},
3022 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3023 {"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"},
3024 {"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"},
3025 {"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"},
3026 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3027 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3028 {"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"},
3029 #if FF_API_HLS_USE_LOCALTIME
3030 {"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 },
3032 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3033 #if FF_API_HLS_USE_LOCALTIME
3034 {"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 },
3036 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3037 {"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" },
3038 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3039 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3040 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3041 {"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" },
3042 {"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" },
3043 {"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" },
3044 {"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" },
3045 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3046 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3047 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3048 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3049 {"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},
3050 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3051 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3052 {"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 },
3053 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3057 static const AVClass hls_class = {
3058 .class_name = "hls muxer",
3059 .item_name = av_default_item_name,
3061 .version = LIBAVUTIL_VERSION_INT,
3065 AVOutputFormat ff_hls_muxer = {
3067 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3068 .extensions = "m3u8",
3069 .priv_data_size = sizeof(HLSContext),
3070 .audio_codec = AV_CODEC_ID_AAC,
3071 .video_codec = AV_CODEC_ID_H264,
3072 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3073 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3075 .write_header = hls_write_header,
3076 .write_packet = hls_write_packet,
3077 .write_trailer = hls_write_trailer,
3078 .priv_class = &hls_class,