2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
33 #include <openssl/rand.h>
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time.h"
45 #include "libavutil/time_internal.h"
48 #include "avio_internal.h"
50 #if CONFIG_HTTP_PROTOCOL
53 #include "hlsplaylist.h"
55 #include "os_support.h"
58 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
59 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
60 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
61 HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
62 HLS_START_SEQUENCE_LAST, // unused
63 } StartSequenceSourceType;
66 CODEC_ATTRIBUTE_WRITTEN = 0,
67 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
68 } CodecAttributeStatus;
71 #define LINE_BUFFER_SIZE MAX_URL_SIZE
72 #define HLS_MICROSECOND_UNIT 1000000
73 #define BUFSIZE (16 * 1024)
74 #define POSTFIX_PATTERN "_%d"
76 typedef struct HLSSegment {
77 char filename[MAX_URL_SIZE];
78 char sub_filename[MAX_URL_SIZE];
79 double duration; /* in seconds */
84 int64_t keyframe_size;
85 unsigned var_stream_idx;
87 char key_uri[LINE_BUFFER_SIZE + 1];
88 char iv_string[KEYSIZE*2 + 1];
90 struct HLSSegment *next;
93 typedef enum HLSFlags {
94 // Generate a single media file and use byte ranges in the playlist.
95 HLS_SINGLE_FILE = (1 << 0),
96 HLS_DELETE_SEGMENTS = (1 << 1),
97 HLS_ROUND_DURATIONS = (1 << 2),
98 HLS_DISCONT_START = (1 << 3),
99 HLS_OMIT_ENDLIST = (1 << 4),
100 HLS_SPLIT_BY_TIME = (1 << 5),
101 HLS_APPEND_LIST = (1 << 6),
102 HLS_PROGRAM_DATE_TIME = (1 << 7),
103 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
104 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
105 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
106 HLS_TEMP_FILE = (1 << 11),
107 HLS_PERIODIC_REKEY = (1 << 12),
108 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
109 HLS_I_FRAMES_ONLY = (1 << 14),
117 typedef struct VariantStream {
118 unsigned var_stream_idx;
121 ff_const59 AVOutputFormat *oformat;
122 ff_const59 AVOutputFormat *vtt_oformat;
124 AVIOContext *out_single_file;
126 int init_range_length;
127 uint8_t *temp_buffer;
128 uint8_t *init_buffer;
130 AVFormatContext *avf;
131 AVFormatContext *vtt_avf;
136 int start_pts_from_audio;
137 double dpp; // duration per packet
140 int64_t video_lastpos;
141 int64_t video_keyframe_pos;
142 int64_t video_keyframe_size;
143 double duration; // last segment duration computed so far, in seconds
144 int64_t start_pos; // last segment starting position
145 int64_t size; // last segment size
147 int discontinuity_set;
149 int reference_stream_index;
151 HLSSegment *segments;
152 HLSSegment *last_segment;
153 HLSSegment *old_segments;
161 double initial_prog_date_time;
162 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
164 char *fmp4_init_filename;
165 char *base_output_dirname;
169 char key_file[LINE_BUFFER_SIZE + 1];
170 char key_uri[LINE_BUFFER_SIZE + 1];
171 char key_string[KEYSIZE*2 + 1];
172 char iv_string[KEYSIZE*2 + 1];
175 char codec_attr[128];
176 CodecAttributeStatus attr_status;
177 unsigned int nb_streams;
178 int m3u8_created; /* status of media play-list creation */
179 int is_default; /* default status of audio group */
180 const char *language; /* audio lauguage name */
181 const char *agroup; /* audio group name */
182 const char *sgroup; /* subtitle group name */
183 const char *ccgroup; /* closed caption group name */
184 const char *varname; /* variant name */
187 typedef struct ClosedCaptionsStream {
188 const char *ccgroup; /* closed caption group name */
189 const char *instreamid; /* closed captions INSTREAM-ID */
190 const char *language; /* closed captions langauge */
191 } ClosedCaptionsStream;
193 typedef struct HLSContext {
194 const AVClass *class; // Class for private options.
195 int64_t start_sequence;
196 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
198 float time; // Set by a private option.
199 float init_time; // Set by a private option.
200 int max_nb_segments; // Set by a private option.
201 int hls_delete_threshold; // Set by a private option.
203 int wrap; // Set by a private option.
205 uint32_t flags; // enum HLSFlags
206 uint32_t pl_type; // enum PlaylistType
207 char *segment_filename;
208 char *fmp4_init_filename;
210 int resend_init_file; ///< resend init file into disk after refresh m3u8
212 int use_localtime; ///< flag to expand filename with localtime
213 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
215 int64_t recording_time;
216 int64_t max_seg_size; // every segment file max size
219 char *vtt_format_options_str;
220 char *subtitle_filename;
221 AVDictionary *format_options;
231 char key_file[LINE_BUFFER_SIZE + 1];
232 char key_uri[LINE_BUFFER_SIZE + 1];
233 char key_string[KEYSIZE*2 + 1];
234 char iv_string[KEYSIZE*2 + 1];
235 AVDictionary *vtt_format_options;
240 VariantStream *var_streams;
241 unsigned int nb_varstreams;
242 ClosedCaptionsStream *cc_streams;
243 unsigned int nb_ccstreams;
245 int master_m3u8_created; /* status of master play-list creation */
246 char *master_m3u8_url; /* URL of the master m3u8 file */
247 int version; /* HLS version */
248 char *var_stream_map; /* user specified variant stream map string */
249 char *cc_stream_map; /* user specified closed caption streams map string */
250 char *master_pl_name;
251 unsigned int master_publish_rate;
253 AVIOContext *m3u8_out;
254 AVIOContext *sub_m3u8_out;
256 int ignore_io_errors;
258 int has_default_key; /* has DEFAULT field of var_stream_map */
259 int has_video_m3u8; /* has video stream m3u8 list */
262 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
263 AVDictionary **options)
265 HLSContext *hls = s->priv_data;
266 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
267 int err = AVERROR_MUXER_NOT_FOUND;
268 if (!*pb || !http_base_proto || !hls->http_persistent) {
269 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
270 #if CONFIG_HTTP_PROTOCOL
272 URLContext *http_url_context = ffio_geturlcontext(*pb);
273 av_assert0(http_url_context);
274 err = ff_http_do_new_request(http_url_context, filename);
276 ff_format_io_close(s, pb);
283 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
285 HLSContext *hls = s->priv_data;
286 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
290 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
291 ff_format_io_close(s, pb);
292 #if CONFIG_HTTP_PROTOCOL
294 URLContext *http_url_context = ffio_geturlcontext(*pb);
295 av_assert0(http_url_context);
297 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
298 ret = ff_http_get_shutdown_status(http_url_context);
304 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
306 int http_base_proto = ff_is_http_proto(s->url);
309 av_dict_set(options, "method", c->method, 0);
310 } else if (http_base_proto) {
311 av_dict_set(options, "method", "PUT", 0);
314 av_dict_set(options, "user_agent", c->user_agent, 0);
315 if (c->http_persistent)
316 av_dict_set_int(options, "multiple_requests", 1, 0);
318 av_dict_set_int(options, "timeout", c->timeout, 0);
320 av_dict_set(options, "headers", c->headers, 0);
323 static void write_codec_attr(AVStream *st, VariantStream *vs)
325 int codec_strlen = strlen(vs->codec_attr);
328 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
330 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
333 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
334 uint8_t *data = st->codecpar->extradata;
335 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
336 snprintf(attr, sizeof(attr),
337 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
341 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
342 uint8_t *data = st->codecpar->extradata;
343 int profile = FF_PROFILE_UNKNOWN;
344 int level = FF_LEVEL_UNKNOWN;
346 if (st->codecpar->profile != FF_PROFILE_UNKNOWN)
347 profile = st->codecpar->profile;
348 if (st->codecpar->level != FF_LEVEL_UNKNOWN)
349 level = st->codecpar->level;
351 /* check the boundary of data which from current position is small than extradata_size */
352 while (data && (data - st->codecpar->extradata + 5) < st->codecpar->extradata_size) {
353 /* get HEVC SPS NAL and seek to profile_tier_level */
354 if (!(data[0] | data[1] | data[2]) && data[3] == 1 && ((data[4] & 0x42) == 0x42)) {
357 /* skip start code + nalu header */
359 /* process by reference General NAL unit syntax */
360 remain_size = st->codecpar->extradata_size - (data - st->codecpar->extradata);
361 uint8_t *rbsp_buf = ff_nal_unit_extract_rbsp(data, remain_size, &rbsp_size, 0);
364 if (rbsp_size < 13) {
368 /* skip sps_video_parameter_set_id u(4),
369 * sps_max_sub_layers_minus1 u(3),
370 * and sps_temporal_id_nesting_flag u(1) */
371 profile = rbsp_buf[1] & 0x1f;
372 /* skip 8 + 8 + 32 + 4 + 43 + 1 bit */
373 level = rbsp_buf[12];
379 if (st->codecpar->codec_tag == MKTAG('h','v','c','1') &&
380 profile != FF_PROFILE_UNKNOWN &&
381 level != FF_LEVEL_UNKNOWN) {
382 snprintf(attr, sizeof(attr), "%s.%d.4.L%d.B01", av_fourcc2str(st->codecpar->codec_tag), profile, level);
384 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
385 snprintf(attr, sizeof(attr), "mp4a.40.33");
386 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
387 snprintf(attr, sizeof(attr), "mp4a.40.34");
388 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
389 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
390 snprintf(attr, sizeof(attr), "mp4a.40.2");
391 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
392 snprintf(attr, sizeof(attr), "ac-3");
393 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
394 snprintf(attr, sizeof(attr), "ec-3");
398 // Don't write the same attribute multiple times
399 if (!av_stristr(vs->codec_attr, attr)) {
400 snprintf(vs->codec_attr + codec_strlen,
401 sizeof(vs->codec_attr) - codec_strlen,
402 "%s%s", codec_strlen ? "," : "", attr);
407 vs->codec_attr[0] = '\0';
408 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
412 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
421 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
428 if (c == '%' && *(p+1) == '%') // %%
430 else if (c == '%' && *(p+1) == placeholder) {
431 av_bprintf(&buf, "%s", datastring);
438 if (addchar_count > 0) {
439 av_bprint_append_data(&buf, p, addchar_count);
443 if (!av_bprint_is_complete(&buf)) {
444 av_bprint_finalize(&buf, NULL);
445 return AVERROR(ENOMEM);
447 if ((ret = av_bprint_finalize(&buf, s)) < 0)
452 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
456 int nd, addchar_count;
461 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
468 if (c == '%' && *(p+1) == '%') // %%
470 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
473 while (av_isdigit(*(p + addchar_count))) {
474 nd = nd * 10 + *(p + addchar_count) - '0';
478 if (*(p + addchar_count) == placeholder) {
479 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
480 p += (addchar_count + 1);
488 av_bprint_append_data(&buf, p, addchar_count);
491 if (!av_bprint_is_complete(&buf)) {
492 av_bprint_finalize(&buf, NULL);
493 return AVERROR(ENOMEM);
495 if ((ret = av_bprint_finalize(&buf, s)) < 0)
500 static void write_styp(AVIOContext *pb)
503 ffio_wfourcc(pb, "styp");
504 ffio_wfourcc(pb, "msdh");
505 avio_wb32(pb, 0); /* minor */
506 ffio_wfourcc(pb, "msdh");
507 ffio_wfourcc(pb, "msix");
510 static int flush_dynbuf(VariantStream *vs, int *range_length)
512 AVFormatContext *ctx = vs->avf;
515 return AVERROR(EINVAL);
519 av_write_frame(ctx, NULL);
522 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
524 avio_write(vs->out, vs->temp_buffer, *range_length);
528 return avio_open_dyn_buf(&ctx->pb);
531 static void reflush_dynbuf(VariantStream *vs, int *range_length)
534 avio_write(vs->out, vs->temp_buffer, *range_length);
538 #define SEPARATOR '\\'
540 #define SEPARATOR '/'
543 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
544 const char *path, const char *proto)
546 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
547 AVDictionary *opt = NULL;
548 AVIOContext *out = NULL;
550 av_dict_set(&opt, "method", "DELETE", 0);
551 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
554 return hls->ignore_io_errors ? 1 : ret;
555 ff_format_io_close(avf, &out);
556 } else if (unlink(path) < 0) {
557 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
558 path, strerror(errno));
563 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
567 HLSSegment *segment, *previous_segment = NULL;
568 float playlist_duration = 0.0f;
572 const char *dirname = NULL;
573 char *dirname_r = NULL;
574 char *dirname_repl = NULL;
575 const char *vtt_dirname = NULL;
576 char *vtt_dirname_r = NULL;
577 const char *proto = NULL;
579 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
581 segment = vs->segments;
583 playlist_duration += segment->duration;
584 segment = segment->next;
587 segment = vs->old_segments;
590 playlist_duration -= segment->duration;
591 previous_segment = segment;
592 segment = previous_segment->next;
594 if (playlist_duration <= -previous_segment->duration) {
595 previous_segment->next = NULL;
598 if (segment_cnt >= hls->hls_delete_threshold) {
599 previous_segment->next = NULL;
604 if (segment && !hls->use_localtime_mkdir) {
605 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
606 dirname = av_dirname(dirname_r);
609 /* if %v is present in the file's directory
610 * all segment belongs to the same variant, so do it only once before the loop*/
611 if (dirname && av_stristr(dirname, "%v")) {
613 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
614 ret = AVERROR(EINVAL);
618 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
619 ret = AVERROR(EINVAL);
624 dirname = dirname_repl;
628 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
630 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
631 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
632 av_bprintf(&path, "%s", segment->filename);
634 if (!av_bprint_is_complete(&path)) {
635 ret = AVERROR(ENOMEM);
639 proto = avio_find_protocol_name(s->url);
640 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
643 if ((segment->sub_filename[0] != '\0')) {
644 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
645 vtt_dirname = av_dirname(vtt_dirname_r);
647 av_bprint_clear(&path);
648 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
649 segment->sub_filename);
650 av_freep(&vtt_dirname_r);
652 if (!av_bprint_is_complete(&path)) {
653 ret = AVERROR(ENOMEM);
657 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
660 av_bprint_clear(&path);
661 previous_segment = segment;
662 segment = previous_segment->next;
663 av_freep(&previous_segment);
667 av_bprint_finalize(&path, NULL);
668 av_freep(&dirname_r);
669 av_freep(&dirname_repl);
674 static int randomize(uint8_t *buf, int len)
677 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
680 if (RAND_bytes(buf, len))
683 return AVERROR(ENOSYS);
685 return AVERROR(EINVAL);
688 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
690 HLSContext *hls = s->priv_data;
694 uint8_t key[KEYSIZE];
695 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
697 len = strlen(key_basename_source) + 4 + 1;
698 hls->key_basename = av_mallocz(len);
699 if (!hls->key_basename)
700 return AVERROR(ENOMEM);
702 av_strlcpy(hls->key_basename, key_basename_source, len);
703 av_strlcat(hls->key_basename, ".key", len);
706 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
707 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
709 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
710 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
713 if (!*hls->iv_string) {
714 uint8_t iv[16] = { 0 };
718 AV_WB64(iv + 8, vs->sequence);
720 memcpy(iv, hls->iv, sizeof(iv));
722 ff_data_to_hex(buf, iv, sizeof(iv), 0);
724 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
727 if (!*hls->key_uri) {
728 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
729 return AVERROR(EINVAL);
732 if (!*hls->key_file) {
733 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
734 return AVERROR(EINVAL);
737 if (!*hls->key_string) {
738 AVDictionary *options = NULL;
740 if ((ret = randomize(key, sizeof(key))) < 0) {
741 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
745 memcpy(key, hls->key, sizeof(key));
748 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
749 set_http_options(s, &options, hls);
750 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
751 av_dict_free(&options);
754 avio_seek(pb, 0, SEEK_CUR);
755 avio_write(pb, key, KEYSIZE);
762 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
764 HLSContext *hls = s->priv_data;
767 uint8_t key[KEYSIZE];
768 AVDictionary *options = NULL;
770 set_http_options(s, &options, hls);
771 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
772 av_dict_free(&options);
774 av_log(hls, AV_LOG_ERROR,
775 "error opening key info file %s\n", hls->key_info_file);
779 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
780 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
782 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
783 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
785 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
786 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
788 ff_format_io_close(s, &pb);
791 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
792 return AVERROR(EINVAL);
795 if (!*vs->key_file) {
796 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
797 return AVERROR(EINVAL);
800 set_http_options(s, &options, hls);
801 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
802 av_dict_free(&options);
804 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
808 ret = avio_read(pb, key, sizeof(key));
809 ff_format_io_close(s, &pb);
810 if (ret != sizeof(key)) {
811 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
812 if (ret >= 0 || ret == AVERROR_EOF)
813 ret = AVERROR(EINVAL);
816 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
821 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
823 AVDictionary *options = NULL;
824 HLSContext *hls = s->priv_data;
826 AVFormatContext *vtt_oc = NULL;
827 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
828 int remaining_options;
831 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
836 oc->url = av_strdup("");
838 return AVERROR(ENOMEM);
840 oc->interrupt_callback = s->interrupt_callback;
841 oc->max_delay = s->max_delay;
842 oc->opaque = s->opaque;
843 oc->io_open = s->io_open;
844 oc->io_close = s->io_close;
845 oc->strict_std_compliance = s->strict_std_compliance;
846 av_dict_copy(&oc->metadata, s->metadata, 0);
848 if (vs->vtt_oformat) {
849 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
852 vtt_oc = vs->vtt_avf;
853 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
856 for (i = 0; i < vs->nb_streams; i++) {
858 AVFormatContext *loc;
859 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
864 if (!(st = avformat_new_stream(loc, NULL)))
865 return AVERROR(ENOMEM);
866 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
867 if (!oc->oformat->codec_tag ||
868 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
869 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
870 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
872 st->codecpar->codec_tag = 0;
875 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
876 st->time_base = vs->streams[i]->time_base;
877 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
883 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
884 if (hls->http_persistent > 0) {
885 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
886 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
888 if (hls->max_seg_size > 0) {
889 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
890 return AVERROR_PATCHWELCOME;
894 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
897 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
898 set_http_options(s, &options, hls);
899 if (byterange_mode) {
900 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
902 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
904 av_dict_free(&options);
907 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
911 av_dict_copy(&options, hls->format_options, 0);
912 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
913 av_dict_set(&options, "fflags", "-autobsf", 0);
914 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
916 /* We only require one PAT/PMT per segment. */
918 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
919 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
920 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
922 ret = avformat_init_output(oc, &options);
923 remaining_options = av_dict_count(options);
924 av_dict_free(&options);
927 if (remaining_options) {
928 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
929 return AVERROR(EINVAL);
935 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
938 if (!av_strcasecmp(segment->filename,filename))
940 segment = segment->next;
942 return (HLSSegment *) NULL;
945 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
946 VariantStream *vs, HLSSegment *en,
947 double duration, int64_t pos, int64_t size)
949 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
950 strlen(vs->current_segment_final_filename_fmt)) {
951 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
953 return AVERROR(ENOMEM);
955 ff_format_set_url(vs->avf, new_url);
956 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
957 char *filename = NULL;
958 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
959 av_log(hls, AV_LOG_ERROR,
960 "Invalid second level segment filename template '%s', "
961 "you can try to remove second_level_segment_size flag\n",
964 return AVERROR(EINVAL);
966 ff_format_set_url(vs->avf, filename);
968 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
969 char *filename = NULL;
970 if (replace_int_data_in_filename(&filename, vs->avf->url,
971 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
972 av_log(hls, AV_LOG_ERROR,
973 "Invalid second level segment filename template '%s', "
974 "you can try to remove second_level_segment_time flag\n",
977 return AVERROR(EINVAL);
979 ff_format_set_url(vs->avf, filename);
985 static int sls_flag_check_duration_size_index(HLSContext *hls)
989 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
990 av_log(hls, AV_LOG_ERROR,
991 "second_level_segment_duration hls_flag requires strftime to be true\n");
992 ret = AVERROR(EINVAL);
994 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
995 av_log(hls, AV_LOG_ERROR,
996 "second_level_segment_size hls_flag requires strfime to be true\n");
997 ret = AVERROR(EINVAL);
999 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1000 av_log(hls, AV_LOG_ERROR,
1001 "second_level_segment_index hls_flag requires strftime to be true\n");
1002 ret = AVERROR(EINVAL);
1008 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
1010 const char *proto = avio_find_protocol_name(vs->basename);
1011 int segment_renaming_ok = proto && !strcmp(proto, "file");
1014 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1015 av_log(hls, AV_LOG_ERROR,
1016 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1017 ret = AVERROR(EINVAL);
1019 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1020 av_log(hls, AV_LOG_ERROR,
1021 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1022 ret = AVERROR(EINVAL);
1028 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
1029 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1030 strlen(vs->current_segment_final_filename_fmt)) {
1031 ff_rename(old_filename, vs->avf->url, hls);
1035 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
1037 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1038 char *filename = NULL;
1039 if (replace_int_data_in_filename(&filename,
1041 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1043 oc->url, 'd', vs->sequence) < 1) {
1045 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1046 "you can try to remove second_level_segment_index flag\n",
1048 av_freep(&filename);
1049 return AVERROR(EINVAL);
1051 ff_format_set_url(oc, filename);
1053 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1054 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1055 sizeof(vs->current_segment_final_filename_fmt));
1056 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1057 char *filename = NULL;
1058 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1059 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1060 "you can try to remove second_level_segment_size flag\n",
1062 av_freep(&filename);
1063 return AVERROR(EINVAL);
1065 ff_format_set_url(oc, filename);
1067 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1068 char *filename = NULL;
1069 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1070 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1071 "you can try to remove second_level_segment_time flag\n",
1073 av_freep(&filename);
1074 return AVERROR(EINVAL);
1076 ff_format_set_url(oc, filename);
1082 /* Create a new segment and append it to the segment list */
1083 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1084 VariantStream *vs, double duration, int64_t pos,
1087 HLSSegment *en = av_malloc(sizeof(*en));
1088 const char *filename;
1089 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1093 return AVERROR(ENOMEM);
1095 en->var_stream_idx = vs->var_stream_idx;
1096 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1102 filename = av_basename(vs->avf->url);
1104 if (hls->use_localtime_mkdir) {
1105 filename = vs->avf->url;
1107 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1108 && !byterange_mode) {
1109 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1111 av_strlcpy(en->filename, filename, sizeof(en->filename));
1113 if (vs->has_subtitle)
1114 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1116 en->sub_filename[0] = '\0';
1118 en->duration = duration;
1121 en->keyframe_pos = vs->video_keyframe_pos;
1122 en->keyframe_size = vs->video_keyframe_size;
1126 if (vs->discontinuity) {
1128 vs->discontinuity = 0;
1131 if (hls->key_info_file || hls->encrypt) {
1132 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1133 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1139 vs->last_segment->next = en;
1141 vs->last_segment = en;
1143 // EVENT or VOD playlists imply sliding window cannot be used
1144 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1145 hls->max_nb_segments = 0;
1147 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1149 vs->initial_prog_date_time += en->duration;
1150 vs->segments = en->next;
1151 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1153 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1155 !(hls->flags & HLS_SINGLE_FILE)) {
1157 en->next = vs->old_segments;
1158 vs->old_segments = en;
1159 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1166 if (hls->max_seg_size > 0) {
1174 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1176 HLSContext *hls = s->priv_data;
1178 int ret = 0, is_segment = 0;
1179 int64_t new_start_pos;
1180 char line[MAX_URL_SIZE];
1184 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1185 &s->interrupt_callback, NULL,
1186 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1189 ff_get_chomp_line(in, line, sizeof(line));
1190 if (strcmp(line, "#EXTM3U")) {
1191 ret = AVERROR_INVALIDDATA;
1195 vs->discontinuity = 0;
1196 while (!avio_feof(in)) {
1197 ff_get_chomp_line(in, line, sizeof(line));
1198 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1199 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1200 if (tmp_sequence < vs->sequence)
1201 av_log(hls, AV_LOG_VERBOSE,
1202 "Found playlist sequence number was smaller """
1203 "than specified start sequence number: %"PRId64" < %"PRId64", "
1204 "omitting\n", tmp_sequence, hls->start_sequence);
1206 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1207 vs->sequence = tmp_sequence;
1209 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1211 vs->discontinuity = 1;
1212 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1214 vs->duration = atof(ptr);
1215 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1216 ptr = av_stristr(line, "URI=\"");
1218 ptr += strlen("URI=\"");
1219 end = av_stristr(ptr, ",");
1221 av_strlcpy(vs->key_uri, ptr, end - ptr);
1223 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1227 ptr = av_stristr(line, "IV=0x");
1229 ptr += strlen("IV=0x");
1230 end = av_stristr(ptr, ",");
1232 av_strlcpy(vs->iv_string, ptr, end - ptr);
1234 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1238 } else if (av_strstart(line, "#", NULL)) {
1240 } else if (line[0]) {
1242 char *new_file = av_strdup(line);
1244 ret = AVERROR(ENOMEM);
1247 ff_format_set_url(vs->avf, new_file);
1249 new_start_pos = avio_tell(vs->avf->pb);
1250 vs->size = new_start_pos - vs->start_pos;
1251 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1252 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1255 vs->start_pos = new_start_pos;
1265 static void hls_free_segments(HLSSegment *p)
1276 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1278 size_t len = strlen(oc->url);
1279 char *final_filename = av_strdup(oc->url);
1282 if (!final_filename)
1283 return AVERROR(ENOMEM);
1284 final_filename[len-4] = '\0';
1285 ret = ff_rename(oc->url, final_filename, s);
1286 oc->url[len-4] = '\0';
1287 av_freep(&final_filename);
1291 static const char* get_relative_url(const char *master_url, const char *media_url)
1293 const char *p = strrchr(master_url, '/');
1294 size_t base_len = 0;
1296 if (!p) p = strrchr(master_url, '\\');
1299 base_len = p - master_url;
1300 if (av_strncasecmp(master_url, media_url, base_len)) {
1301 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1308 return media_url + base_len + 1;
1311 static int64_t get_stream_bit_rate(AVStream *stream)
1313 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1315 AV_PKT_DATA_CPB_PROPERTIES,
1319 if (stream->codecpar->bit_rate)
1320 return stream->codecpar->bit_rate;
1322 return props->max_bitrate;
1327 static int create_master_playlist(AVFormatContext *s,
1328 VariantStream * const input_vs)
1330 HLSContext *hls = s->priv_data;
1331 VariantStream *vs, *temp_vs;
1332 AVStream *vid_st, *aud_st;
1333 AVDictionary *options = NULL;
1336 const char *m3u8_rel_name = NULL;
1337 const char *vtt_m3u8_rel_name = NULL;
1338 const char *ccgroup;
1339 const char *sgroup = NULL;
1340 ClosedCaptionsStream *ccs;
1341 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1342 int is_file_proto = proto && !strcmp(proto, "file");
1343 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1344 char temp_filename[MAX_URL_SIZE];
1346 input_vs->m3u8_created = 1;
1347 if (!hls->master_m3u8_created) {
1348 /* For the first time, wait until all the media playlists are created */
1349 for (i = 0; i < hls->nb_varstreams; i++)
1350 if (!hls->var_streams[i].m3u8_created)
1353 /* Keep publishing the master playlist at the configured rate */
1354 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1355 input_vs->number % hls->master_publish_rate)
1359 set_http_options(s, &options, hls);
1360 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1361 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1362 av_dict_free(&options);
1364 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1369 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1371 for (i = 0; i < hls->nb_ccstreams; i++) {
1372 ccs = &(hls->cc_streams[i]);
1373 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1374 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1375 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1377 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1378 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1381 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1382 for (i = 0; i < hls->nb_varstreams; i++) {
1383 vs = &(hls->var_streams[i]);
1385 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1388 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1389 if (!m3u8_rel_name) {
1390 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1394 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1397 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1398 for (i = 0; i < hls->nb_varstreams; i++) {
1399 vs = &(hls->var_streams[i]);
1401 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1402 if (!m3u8_rel_name) {
1403 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1409 for (j = 0; j < vs->nb_streams; j++) {
1410 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1411 vid_st = vs->streams[j];
1412 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1413 aud_st = vs->streams[j];
1416 if (!vid_st && !aud_st) {
1417 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1422 * Traverse through the list of audio only rendition streams and find
1423 * the rendition which has highest bitrate in the same audio group
1426 for (j = 0; j < hls->nb_varstreams; j++) {
1427 temp_vs = &(hls->var_streams[j]);
1428 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1430 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1432 aud_st = temp_vs->streams[0];
1433 if (temp_vs->streams[0]->codecpar->bit_rate >
1434 aud_st->codecpar->bit_rate)
1435 aud_st = temp_vs->streams[0];
1442 bandwidth += get_stream_bit_rate(vid_st);
1444 bandwidth += get_stream_bit_rate(aud_st);
1445 bandwidth += bandwidth / 10;
1448 if (vid_st && vs->ccgroup) {
1449 /* check if this group name is available in the cc map string */
1450 for (j = 0; j < hls->nb_ccstreams; j++) {
1451 ccs = &(hls->cc_streams[j]);
1452 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1453 ccgroup = vs->ccgroup;
1457 if (j == hls->nb_ccstreams)
1458 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1462 if (vid_st && vs->sgroup) {
1463 sgroup = vs->sgroup;
1464 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1465 if (!vtt_m3u8_rel_name) {
1466 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1470 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1473 if (!hls->has_default_key || !hls->has_video_m3u8) {
1474 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1475 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1478 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1479 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1485 hls->master_m3u8_created = 1;
1486 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1488 ff_rename(temp_filename, hls->master_m3u8_url, s);
1493 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1495 HLSContext *hls = s->priv_data;
1497 int target_duration = 0;
1499 char temp_filename[MAX_URL_SIZE];
1500 char temp_vtt_filename[MAX_URL_SIZE];
1501 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1502 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1503 int is_file_proto = proto && !strcmp(proto, "file");
1504 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1505 static unsigned warned_non_file;
1506 char *key_uri = NULL;
1507 char *iv_string = NULL;
1508 AVDictionary *options = NULL;
1509 double prog_date_time = vs->initial_prog_date_time;
1510 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1511 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1514 if (byterange_mode) {
1519 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1523 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1527 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1528 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1530 set_http_options(s, &options, hls);
1531 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1532 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1533 if (hls->ignore_io_errors)
1538 for (en = vs->segments; en; en = en->next) {
1539 if (target_duration <= en->duration)
1540 target_duration = lrint(en->duration);
1543 vs->discontinuity_set = 0;
1544 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1545 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1547 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1548 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1549 vs->discontinuity_set = 1;
1551 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1552 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1554 for (en = vs->segments; en; en = en->next) {
1555 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1556 av_strcasecmp(en->iv_string, iv_string))) {
1557 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1559 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1560 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1561 key_uri = en->key_uri;
1562 iv_string = en->iv_string;
1565 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1566 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1567 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1570 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1571 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1572 en->size, en->pos, hls->baseurl,
1573 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1575 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1579 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1580 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1582 if (vs->vtt_m3u8_name) {
1583 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1584 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1585 if (hls->ignore_io_errors)
1589 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1590 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1591 for (en = vs->segments; en; en = en->next) {
1592 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1593 en->duration, 0, en->size, en->pos,
1594 hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1596 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1601 ff_hls_write_end_list(hls->sub_m3u8_out);
1606 av_dict_free(&options);
1607 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1611 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1612 if (use_temp_file) {
1613 ff_rename(temp_filename, vs->m3u8_name, s);
1614 if (vs->vtt_m3u8_name)
1615 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1617 if (ret >= 0 && hls->master_pl_name)
1618 if (create_master_playlist(s, vs) < 0)
1619 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1624 static int hls_start(AVFormatContext *s, VariantStream *vs)
1626 HLSContext *c = s->priv_data;
1627 AVFormatContext *oc = vs->avf;
1628 AVFormatContext *vtt_oc = vs->vtt_avf;
1629 AVDictionary *options = NULL;
1630 const char *proto = NULL;
1631 int use_temp_file = 0;
1632 char iv_string[KEYSIZE*2 + 1];
1635 if (c->flags & HLS_SINGLE_FILE) {
1636 char *new_name = av_strdup(vs->basename);
1638 return AVERROR(ENOMEM);
1639 ff_format_set_url(oc, new_name);
1640 if (vs->vtt_basename) {
1641 new_name = av_strdup(vs->vtt_basename);
1643 return AVERROR(ENOMEM);
1644 ff_format_set_url(vtt_oc, new_name);
1646 } else if (c->max_seg_size > 0) {
1647 char *filename = NULL;
1648 if (replace_int_data_in_filename(&filename,
1650 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1652 vs->basename, 'd', vs->sequence) < 1) {
1654 av_freep(&filename);
1655 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1656 return AVERROR(EINVAL);
1658 ff_format_set_url(oc, filename);
1660 if (c->use_localtime) {
1662 struct tm *tm, tmpbuf;
1663 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1664 char *buf = av_mallocz(bufsize);
1666 return AVERROR(ENOMEM);
1668 tm = localtime_r(&now0, &tmpbuf);
1669 ff_format_set_url(oc, buf);
1670 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1671 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1672 return AVERROR(EINVAL);
1675 err = sls_flag_use_localtime_filename(oc, c, vs);
1677 return AVERROR(ENOMEM);
1680 if (c->use_localtime_mkdir) {
1682 char *fn_copy = av_strdup(oc->url);
1684 return AVERROR(ENOMEM);
1685 dir = av_dirname(fn_copy);
1686 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1687 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1689 return AVERROR(errno);
1694 char *filename = NULL;
1695 if (replace_int_data_in_filename(&filename,
1697 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1699 vs->basename, 'd', vs->sequence) < 1) {
1701 av_freep(&filename);
1702 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1703 return AVERROR(EINVAL);
1705 ff_format_set_url(oc, filename);
1707 if (vs->vtt_basename) {
1708 char *filename = NULL;
1709 if (replace_int_data_in_filename(&filename,
1711 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1713 vs->vtt_basename, 'd', vs->sequence) < 1) {
1715 av_freep(&filename);
1716 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1717 return AVERROR(EINVAL);
1719 ff_format_set_url(vtt_oc, filename);
1723 proto = avio_find_protocol_name(oc->url);
1724 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1726 if (use_temp_file) {
1727 char *new_name = av_asprintf("%s.tmp", oc->url);
1729 return AVERROR(ENOMEM);
1730 ff_format_set_url(oc, new_name);
1733 if (c->key_info_file || c->encrypt) {
1734 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1735 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1736 return AVERROR_PATCHWELCOME;
1739 if (c->key_info_file && c->encrypt) {
1740 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1741 " ignoring -hls_enc\n");
1744 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1745 if (c->key_info_file) {
1746 if ((err = hls_encryption_start(s, vs)) < 0)
1749 if (!c->encrypt_started) {
1750 if ((err = do_encrypt(s, vs)) < 0)
1752 c->encrypt_started = 1;
1754 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1755 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1756 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1758 vs->encrypt_started = 1;
1760 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1762 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1763 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1764 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1767 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1768 if (oc->oformat->priv_class && oc->priv_data) {
1769 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1771 if (c->flags & HLS_SINGLE_FILE) {
1772 if (c->key_info_file || c->encrypt) {
1773 av_dict_set(&options, "encryption_key", vs->key_string, 0);
1774 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
1776 /* Write temp file with cryption content */
1777 av_freep(&vs->basename_tmp);
1778 vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
1780 /* append temp file content into single file */
1781 av_freep(&vs->basename);
1782 vs->basename = av_asprintf("%s", oc->url);
1784 vs->basename_tmp = vs->basename;
1786 set_http_options(s, &options, c);
1787 if (!vs->out_single_file)
1788 if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
1789 if (c->ignore_io_errors)
1794 if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
1795 if (c->ignore_io_errors)
1802 if (vs->vtt_basename) {
1803 set_http_options(s, &options, c);
1804 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1805 if (c->ignore_io_errors)
1810 av_dict_free(&options);
1812 if (vs->vtt_basename) {
1813 err = avformat_write_header(vtt_oc,NULL);
1820 av_dict_free(&options);
1825 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1828 time_t t = time(NULL);
1829 struct tm *p, tmbuf;
1830 HLSContext *hls = s->priv_data;
1832 p = localtime_r(&t, &tmbuf);
1833 // no %s support when strftime returned error or left format string unchanged
1834 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1835 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1836 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1838 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1841 static int append_postfix(char *name, int name_buf_len, int i)
1844 char extension[10] = {'\0'};
1846 p = strrchr(name, '.');
1848 av_strlcpy(extension, p, sizeof(extension));
1852 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1854 if (strlen(extension))
1855 av_strlcat(name, extension, name_buf_len);
1860 static int validate_name(int nb_vs, const char *fn)
1862 const char *filename, *subdir_name;
1863 char *fn_dup = NULL;
1867 return AVERROR(EINVAL);
1869 fn_dup = av_strdup(fn);
1871 return AVERROR(ENOMEM);
1872 filename = av_basename(fn);
1873 subdir_name = av_dirname(fn_dup);
1875 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1876 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1877 "either in the filename or in the sub-directory name of file %s\n", fn);
1878 ret = AVERROR(EINVAL);
1882 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1883 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1884 "in the sub-directory name of file %s, but only in one of them\n", fn);
1885 ret = AVERROR(EINVAL);
1894 static int format_name(const char *buf, char **s, int index, const char *varname)
1896 const char *proto, *dir;
1897 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1900 orig_buf_dup = av_strdup(buf);
1902 return AVERROR(ENOMEM);
1904 if (!av_stristr(buf, "%v")) {
1910 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1911 ret = AVERROR(EINVAL);
1915 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1916 ret = AVERROR(EINVAL);
1921 proto = avio_find_protocol_name(orig_buf_dup);
1922 dir = av_dirname(orig_buf_dup);
1924 /* if %v is present in the file's directory, create sub-directory */
1925 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1926 mod_buf_dup = av_strdup(*s);
1927 dir = av_dirname(mod_buf_dup);
1928 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1929 ret = AVERROR(errno);
1935 av_freep(&orig_buf_dup);
1936 av_freep(&mod_buf_dup);
1940 static int get_nth_codec_stream_index(AVFormatContext *s,
1941 enum AVMediaType codec_type,
1944 unsigned int stream_index, cnt;
1945 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1948 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1949 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1951 if (cnt == stream_id)
1952 return stream_index;
1958 static int parse_variant_stream_mapstring(AVFormatContext *s)
1960 HLSContext *hls = s->priv_data;
1962 int stream_index, i, j;
1963 enum AVMediaType codec_type;
1964 int nb_varstreams = 0, nb_streams;
1965 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1969 * Expected format for var_stream_map string is as below:
1971 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1972 * This string specifies how to group the audio, video and subtitle streams
1973 * into different variant streams. The variant stream groups are separated
1976 * a:, v:, s: are keys to specify audio, video and subtitle streams
1977 * respectively. Allowed values are 0 to 9 digits (limited just based on
1980 * agroup: is key to specify audio group. A string can be given as value.
1981 * sgroup: is key to specify subtitle group. A string can be given as value.
1983 p = av_strdup(hls->var_stream_map);
1985 return AVERROR(ENOMEM);
1988 while (av_strtok(q, " \t", &saveptr1)) {
1994 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1995 if (!hls->var_streams)
1996 return AVERROR(ENOMEM);
1997 hls->nb_varstreams = nb_varstreams;
1999 p = hls->var_stream_map;
2001 while (varstr = av_strtok(p, " \t", &saveptr1)) {
2004 if (nb_varstreams < hls->nb_varstreams) {
2005 vs = &(hls->var_streams[nb_varstreams]);
2006 vs->var_stream_idx = nb_varstreams;
2010 return AVERROR(EINVAL);
2014 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
2015 !av_strncasecmp(q, "s:", 2))
2022 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
2024 return AVERROR(ENOMEM);
2027 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
2031 if (av_strstart(keyval, "language:", &val)) {
2034 } else if (av_strstart(keyval, "default:", &val)) {
2035 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
2036 (!av_strncasecmp(val, "1", strlen("1"))));
2037 hls->has_default_key = 1;
2039 } else if (av_strstart(keyval, "name:", &val)) {
2042 } else if (av_strstart(keyval, "agroup:", &val)) {
2045 } else if (av_strstart(keyval, "sgroup:", &val)) {
2048 } else if (av_strstart(keyval, "ccgroup:", &val)) {
2051 } else if (av_strstart(keyval, "v:", &val)) {
2052 codec_type = AVMEDIA_TYPE_VIDEO;
2053 hls->has_video_m3u8 = 1;
2054 } else if (av_strstart(keyval, "a:", &val)) {
2055 codec_type = AVMEDIA_TYPE_AUDIO;
2056 } else if (av_strstart(keyval, "s:", &val)) {
2057 codec_type = AVMEDIA_TYPE_SUBTITLE;
2059 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2060 return AVERROR(EINVAL);
2063 num = strtoll(val, &end, 10);
2064 if (!av_isdigit(*val) || *end != '\0') {
2065 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2066 return AVERROR(EINVAL);
2068 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2070 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2071 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2072 if (vs->streams[i] == s->streams[stream_index]) {
2073 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2074 "variant definition #%d\n", nb_varstreams - 1);
2075 return AVERROR(EINVAL);
2078 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2079 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2080 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2081 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2082 "in two different variant definitions #%d and #%d\n",
2083 j, nb_varstreams - 1);
2084 return AVERROR(EINVAL);
2088 vs->streams[nb_streams++] = s->streams[stream_index];
2090 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2091 return AVERROR(EINVAL);
2095 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2096 hls->nb_varstreams);
2101 static int parse_cc_stream_mapstring(AVFormatContext *s)
2103 HLSContext *hls = s->priv_data;
2104 int nb_ccstreams = 0;
2105 char *p, *q, *ccstr, *keyval;
2106 char *saveptr1 = NULL, *saveptr2 = NULL;
2108 ClosedCaptionsStream *ccs;
2110 p = av_strdup(hls->cc_stream_map);
2112 return AVERROR(ENOMEM);
2115 while (av_strtok(q, " \t", &saveptr1)) {
2121 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2122 if (!hls->cc_streams)
2123 return AVERROR(ENOMEM);
2124 hls->nb_ccstreams = nb_ccstreams;
2126 p = hls->cc_stream_map;
2128 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2131 if (nb_ccstreams < hls->nb_ccstreams)
2132 ccs = &(hls->cc_streams[nb_ccstreams++]);
2134 return AVERROR(EINVAL);
2136 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2139 if (av_strstart(keyval, "ccgroup:", &val)) {
2141 } else if (av_strstart(keyval, "instreamid:", &val)) {
2142 ccs->instreamid = val;
2143 } else if (av_strstart(keyval, "language:", &val)) {
2144 ccs->language = val;
2146 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2147 return AVERROR(EINVAL);
2151 if (!ccs->ccgroup || !ccs->instreamid) {
2152 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2153 return AVERROR(EINVAL);
2156 if (av_strstart(ccs->instreamid, "CC", &val)) {
2157 if (atoi(val) < 1 || atoi(val) > 4) {
2158 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2159 atoi(val), ccs->instreamid);
2160 return AVERROR(EINVAL);
2162 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2163 if (atoi(val) < 1 || atoi(val) > 63) {
2164 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2165 atoi(val), ccs->instreamid);
2166 return AVERROR(EINVAL);
2169 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2171 return AVERROR(EINVAL);
2178 static int update_variant_stream_info(AVFormatContext *s)
2180 HLSContext *hls = s->priv_data;
2184 if (hls->cc_stream_map) {
2185 ret = parse_cc_stream_mapstring(s);
2190 if (hls->var_stream_map) {
2191 return parse_variant_stream_mapstring(s);
2193 //By default, a single variant stream with all the codec streams is created
2194 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2195 if (!hls->var_streams)
2196 return AVERROR(ENOMEM);
2197 hls->nb_varstreams = 1;
2199 hls->var_streams[0].var_stream_idx = 0;
2200 hls->var_streams[0].nb_streams = s->nb_streams;
2201 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2202 hls->var_streams[0].nb_streams);
2203 if (!hls->var_streams[0].streams)
2204 return AVERROR(ENOMEM);
2206 //by default, the first available ccgroup is mapped to the variant stream
2207 if (hls->nb_ccstreams)
2208 hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2210 for (i = 0; i < s->nb_streams; i++)
2211 hls->var_streams[0].streams[i] = s->streams[i];
2216 static int update_master_pl_info(AVFormatContext *s)
2218 HLSContext *hls = s->priv_data;
2220 char *fn1= NULL, *fn2 = NULL;
2223 fn1 = av_strdup(s->url);
2225 return AVERROR(ENOMEM);
2226 dir = av_dirname(fn1);
2229 * if output file's directory has %v, variants are created in sub-directories
2230 * then master is created at the sub-directories level
2232 if (dir && av_stristr(av_basename(dir), "%v")) {
2233 fn2 = av_strdup(dir);
2235 ret = AVERROR(ENOMEM);
2238 dir = av_dirname(fn2);
2241 if (dir && strcmp(dir, "."))
2242 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2244 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2246 if (!hls->master_m3u8_url) {
2247 ret = AVERROR(ENOMEM);
2258 static int hls_write_header(AVFormatContext *s)
2260 HLSContext *hls = s->priv_data;
2262 VariantStream *vs = NULL;
2264 for (i = 0; i < hls->nb_varstreams; i++) {
2265 vs = &hls->var_streams[i];
2267 ret = avformat_write_header(vs->avf, NULL);
2270 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2271 for (j = 0; j < vs->nb_streams; j++) {
2273 AVStream *outer_st = vs->streams[j];
2275 if (hls->max_seg_size > 0) {
2276 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2277 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2278 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2279 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2280 outer_st->codecpar->bit_rate, hls->max_seg_size);
2284 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2285 inner_st = vs->avf->streams[j];
2286 else if (vs->vtt_avf)
2287 inner_st = vs->vtt_avf->streams[0];
2289 /* We have a subtitle stream, when the user does not want one */
2293 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2294 if (outer_st->codecpar->codec_id == AV_CODEC_ID_HEVC &&
2295 outer_st->codecpar->codec_tag != MKTAG('h','v','c','1')) {
2296 av_log(s, AV_LOG_WARNING, "Stream HEVC is not hvc1, you should use tag:v hvc1 to set it.\n");
2298 write_codec_attr(outer_st, vs);
2301 /* Update the Codec Attr string for the mapped audio groups */
2302 if (vs->has_video && vs->agroup) {
2303 for (j = 0; j < hls->nb_varstreams; j++) {
2304 VariantStream *vs_agroup = &(hls->var_streams[j]);
2305 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2306 vs_agroup->agroup &&
2307 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2308 write_codec_attr(vs_agroup->streams[0], vs);
2317 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2319 HLSContext *hls = s->priv_data;
2320 AVDictionary *options = NULL;
2323 set_http_options(s, &options, hls);
2324 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2325 av_dict_free(&options);
2328 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2329 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2334 static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
2337 int64_t read_byte = 0;
2338 int64_t total_size = 0;
2339 char *filename = NULL;
2341 AVFormatContext *oc = vs->avf;
2343 hlsenc_io_close(s, &vs->out, vs->basename_tmp);
2344 filename = av_asprintf("%s.tmp", oc->url);
2345 ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
2352 memset(buf, 0, sizeof(BUFSIZE));
2353 read_byte = avio_read(vs->out, buf, BUFSIZE);
2354 avio_write(vs->out_single_file, buf, read_byte);
2355 if (read_byte > 0) {
2356 total_size += read_byte;
2359 } while (read_byte > 0);
2361 hlsenc_io_close(s, &vs->out, filename);
2366 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2368 HLSContext *hls = s->priv_data;
2369 AVFormatContext *oc = NULL;
2370 AVStream *st = s->streams[pkt->stream_index];
2371 int64_t end_pts = 0;
2373 int ret = 0, can_split = 1, i, j;
2374 int stream_index = 0;
2375 int range_length = 0;
2376 const char *proto = NULL;
2377 int use_temp_file = 0;
2378 VariantStream *vs = NULL;
2379 char *old_filename = NULL;
2381 for (i = 0; i < hls->nb_varstreams; i++) {
2382 vs = &hls->var_streams[i];
2383 for (j = 0; j < vs->nb_streams; j++) {
2384 if (vs->streams[j] == st) {
2385 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2401 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2402 return AVERROR(ENOMEM);
2405 end_pts = hls->recording_time * vs->number;
2407 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2408 /* reset end_pts, hls->recording_time at end of the init hls list */
2409 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2410 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * (hls->time * AV_TIME_BASE);
2411 hls->recording_time = hls->time * AV_TIME_BASE;
2412 end_pts = init_list_dur + after_init_list_dur ;
2415 if (vs->start_pts == AV_NOPTS_VALUE) {
2416 vs->start_pts = pkt->pts;
2417 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2418 vs->start_pts_from_audio = 1;
2420 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2421 vs->start_pts = pkt->pts;
2422 vs->start_pts_from_audio = 0;
2425 if (vs->has_video) {
2426 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2427 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2428 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2430 if (pkt->pts == AV_NOPTS_VALUE)
2431 is_ref_pkt = can_split = 0;
2434 if (vs->end_pts == AV_NOPTS_VALUE)
2435 vs->end_pts = pkt->pts;
2436 if (vs->new_start) {
2438 vs->duration = (double)(pkt->pts - vs->end_pts)
2439 * st->time_base.num / st->time_base.den;
2440 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2442 if (pkt->duration) {
2443 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2445 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2446 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2451 can_split = can_split && (pkt->pts - vs->end_pts > 0);
2452 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2453 end_pts, AV_TIME_BASE_Q) >= 0) {
2454 int64_t new_start_pos;
2455 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2457 av_write_frame(oc, NULL); /* Flush any buffered data */
2458 new_start_pos = avio_tell(oc->pb);
2459 vs->size = new_start_pos - vs->start_pos;
2461 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2462 if (!vs->init_range_length) {
2463 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2464 if (range_length <= 0)
2465 return AVERROR(EINVAL);
2466 avio_write(vs->out, vs->init_buffer, range_length);
2467 if (!hls->resend_init_file)
2468 av_freep(&vs->init_buffer);
2469 vs->init_range_length = range_length;
2470 avio_open_dyn_buf(&oc->pb);
2471 vs->packets_written = 0;
2472 vs->start_pos = range_length;
2473 if (!byterange_mode) {
2474 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2478 if (!byterange_mode) {
2480 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2484 if (hls->flags & HLS_SINGLE_FILE) {
2485 ret = flush_dynbuf(vs, &range_length);
2486 av_freep(&vs->temp_buffer);
2490 vs->size = range_length;
2491 if (hls->key_info_file || hls->encrypt)
2492 vs->size = append_single_file(s, vs);
2495 proto = avio_find_protocol_name(oc->url);
2496 use_temp_file = proto && !strcmp(proto, "file")
2497 && (hls->flags & HLS_TEMP_FILE);
2500 if ((hls->max_seg_size > 0 && (vs->size + vs->start_pos >= hls->max_seg_size)) || !byterange_mode) {
2501 AVDictionary *options = NULL;
2502 char *filename = NULL;
2503 if (hls->key_info_file || hls->encrypt) {
2504 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2505 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2506 filename = av_asprintf("crypto:%s", oc->url);
2508 filename = av_asprintf("%s", oc->url);
2511 av_dict_free(&options);
2512 return AVERROR(ENOMEM);
2515 // look to rename the asset name
2517 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2519 set_http_options(s, &options, hls);
2521 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2523 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2524 "Failed to open file '%s'\n", filename);
2525 av_freep(&filename);
2526 av_dict_free(&options);
2527 return hls->ignore_io_errors ? 0 : ret;
2529 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2530 write_styp(vs->out);
2532 ret = flush_dynbuf(vs, &range_length);
2534 av_freep(&filename);
2535 av_dict_free(&options);
2538 ret = hlsenc_io_close(s, &vs->out, filename);
2540 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2541 " will retry with a new http session.\n");
2542 ff_format_io_close(s, &vs->out);
2543 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2544 reflush_dynbuf(vs, &range_length);
2545 ret = hlsenc_io_close(s, &vs->out, filename);
2547 av_dict_free(&options);
2548 av_freep(&vs->temp_buffer);
2549 av_freep(&filename);
2553 hls_rename_temp_file(s, oc);
2556 old_filename = av_strdup(oc->url);
2557 if (!old_filename) {
2558 return AVERROR(ENOMEM);
2561 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2562 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2563 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2564 vs->end_pts = pkt->pts;
2567 av_freep(&old_filename);
2572 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2573 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2574 if ((ret = hls_window(s, 0, vs)) < 0) {
2575 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2576 ff_format_io_close(s, &vs->out);
2577 if ((ret = hls_window(s, 0, vs)) < 0) {
2578 av_freep(&old_filename);
2584 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2585 ret = hls_init_file_resend(s, vs);
2587 av_freep(&old_filename);
2592 if (hls->flags & HLS_SINGLE_FILE) {
2593 vs->start_pos += vs->size;
2594 if (hls->key_info_file || hls->encrypt)
2595 ret = hls_start(s, vs);
2596 } else if (hls->max_seg_size > 0) {
2597 if (vs->size + vs->start_pos >= hls->max_seg_size) {
2599 sls_flag_file_rename(hls, vs, old_filename);
2600 ret = hls_start(s, vs);
2602 /* When split segment by byte, the duration is short than hls_time,
2603 * so it is not enough one segment duration as hls_time, */
2605 vs->start_pos = new_start_pos;
2608 vs->start_pos = new_start_pos;
2609 sls_flag_file_rename(hls, vs, old_filename);
2610 ret = hls_start(s, vs);
2613 av_freep(&old_filename);
2621 vs->packets_written++;
2623 int64_t keyframe_pre_pos = avio_tell(oc->pb);
2624 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2625 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2626 (pkt->flags & AV_PKT_FLAG_KEY) && !keyframe_pre_pos) {
2627 av_write_frame(oc, NULL); /* Flush any buffered data */
2628 vs->video_keyframe_size = avio_tell(oc->pb) - keyframe_pre_pos;
2630 vs->video_keyframe_pos = vs->start_pos;
2631 if (hls->ignore_io_errors)
2638 static void hls_deinit(AVFormatContext *s)
2640 HLSContext *hls = s->priv_data;
2642 VariantStream *vs = NULL;
2644 for (i = 0; i < hls->nb_varstreams; i++) {
2645 vs = &hls->var_streams[i];
2647 av_freep(&vs->basename);
2648 av_freep(&vs->base_output_dirname);
2649 av_freep(&vs->fmp4_init_filename);
2650 av_freep(&vs->vtt_basename);
2651 av_freep(&vs->vtt_m3u8_name);
2653 avformat_free_context(vs->vtt_avf);
2654 avformat_free_context(vs->avf);
2655 if (hls->resend_init_file)
2656 av_freep(&vs->init_buffer);
2657 hls_free_segments(vs->segments);
2658 hls_free_segments(vs->old_segments);
2659 av_freep(&vs->m3u8_name);
2660 av_freep(&vs->streams);
2663 ff_format_io_close(s, &hls->m3u8_out);
2664 ff_format_io_close(s, &hls->sub_m3u8_out);
2665 av_freep(&hls->key_basename);
2666 av_freep(&hls->var_streams);
2667 av_freep(&hls->cc_streams);
2668 av_freep(&hls->master_m3u8_url);
2671 static int hls_write_trailer(struct AVFormatContext *s)
2673 HLSContext *hls = s->priv_data;
2674 AVFormatContext *oc = NULL;
2675 AVFormatContext *vtt_oc = NULL;
2676 char *old_filename = NULL;
2677 const char *proto = NULL;
2678 int use_temp_file = 0;
2681 VariantStream *vs = NULL;
2682 AVDictionary *options = NULL;
2683 int range_length, byterange_mode;
2685 for (i = 0; i < hls->nb_varstreams; i++) {
2686 char *filename = NULL;
2687 vs = &hls->var_streams[i];
2689 vtt_oc = vs->vtt_avf;
2690 old_filename = av_strdup(oc->url);
2693 if (!old_filename) {
2694 return AVERROR(ENOMEM);
2696 if (hls->key_info_file || hls->encrypt) {
2697 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2698 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2699 filename = av_asprintf("crypto:%s", oc->url);
2701 filename = av_asprintf("%s", oc->url);
2704 av_freep(&old_filename);
2705 return AVERROR(ENOMEM);
2708 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2709 int range_length = 0;
2710 if (!vs->init_range_length) {
2711 uint8_t *buffer = NULL;
2712 av_write_frame(oc, NULL); /* Flush any buffered data */
2714 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2715 avio_write(vs->out, buffer, range_length);
2717 vs->init_range_length = range_length;
2718 avio_open_dyn_buf(&oc->pb);
2719 vs->packets_written = 0;
2720 vs->start_pos = range_length;
2721 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2722 if (!byterange_mode) {
2723 ff_format_io_close(s, &vs->out);
2724 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2728 if (!(hls->flags & HLS_SINGLE_FILE)) {
2729 set_http_options(s, &options, hls);
2730 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2732 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2735 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2736 write_styp(vs->out);
2738 ret = flush_dynbuf(vs, &range_length);
2742 vs->size = range_length;
2743 ret = hlsenc_io_close(s, &vs->out, filename);
2745 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2746 ff_format_io_close(s, &vs->out);
2747 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2749 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2752 reflush_dynbuf(vs, &range_length);
2753 ret = hlsenc_io_close(s, &vs->out, filename);
2755 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2757 if (hls->flags & HLS_SINGLE_FILE) {
2758 if (hls->key_info_file || hls->encrypt) {
2759 vs->size = append_single_file(s, vs);
2761 hlsenc_io_close(s, &vs->out_single_file, vs->basename);
2764 av_freep(&vs->temp_buffer);
2765 av_dict_free(&options);
2766 av_freep(&filename);
2767 av_write_trailer(oc);
2769 proto = avio_find_protocol_name(oc->url);
2770 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2773 // rename that segment from .tmp to the real one
2774 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2775 hls_rename_temp_file(s, oc);
2776 av_freep(&old_filename);
2777 old_filename = av_strdup(oc->url);
2779 if (!old_filename) {
2780 return AVERROR(ENOMEM);
2784 /* after av_write_trailer, then duration + 1 duration per packet */
2785 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2787 sls_flag_file_rename(hls, vs, old_filename);
2791 av_write_trailer(vtt_oc);
2792 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2793 ff_format_io_close(s, &vtt_oc->pb);
2795 ret = hls_window(s, 1, vs);
2797 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2798 ff_format_io_close(s, &vs->out);
2799 hls_window(s, 1, vs);
2801 ffio_free_dyn_buf(&oc->pb);
2803 av_free(old_filename);
2810 static int hls_init(AVFormatContext *s)
2815 HLSContext *hls = s->priv_data;
2816 const char *pattern;
2817 VariantStream *vs = NULL;
2818 const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2820 int http_base_proto = ff_is_http_proto(s->url);
2821 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2822 double initial_program_date_time = av_gettime() / 1000000.0;
2824 if (hls->use_localtime) {
2825 pattern = get_default_pattern_localtime_fmt(s);
2827 pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2828 if (hls->flags & HLS_SINGLE_FILE)
2832 hls->has_default_key = 0;
2833 hls->has_video_m3u8 = 0;
2834 ret = update_variant_stream_info(s);
2836 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2841 if (!hls->method && http_base_proto) {
2842 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2845 ret = validate_name(hls->nb_varstreams, s->url);
2849 if (hls->segment_filename) {
2850 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2855 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2856 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2861 if (hls->subtitle_filename) {
2862 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2867 if (hls->master_pl_name) {
2868 ret = update_master_pl_info(s);
2870 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2876 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2877 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2878 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2879 time_t t = time(NULL);
2880 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2881 hls->start_sequence = av_gettime();
2882 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2883 hls->start_sequence = (int64_t)t;
2884 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2886 struct tm *p, tmbuf;
2887 if (!(p = localtime_r(&t, &tmbuf)))
2888 return AVERROR(errno);
2889 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2890 return AVERROR(ENOMEM);
2891 hls->start_sequence = strtoll(b, NULL, 10);
2893 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2896 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2898 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2899 // Independent segments cannot be guaranteed when splitting by time
2900 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2901 av_log(s, AV_LOG_WARNING,
2902 "'split_by_time' and 'independent_segments' cannot be "
2903 "enabled together. Disabling 'independent_segments' flag\n");
2906 for (i = 0; i < hls->nb_varstreams; i++) {
2907 vs = &hls->var_streams[i];
2909 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2913 vs->sequence = hls->start_sequence;
2914 vs->start_pts = AV_NOPTS_VALUE;
2915 vs->end_pts = AV_NOPTS_VALUE;
2916 vs->current_segment_final_filename_fmt[0] = '\0';
2917 vs->initial_prog_date_time = initial_program_date_time;
2919 for (j = 0; j < vs->nb_streams; j++) {
2920 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2921 /* Get one video stream to reference for split segments
2922 * so use the first video stream index. */
2923 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2924 vs->reference_stream_index = vs->streams[j]->index;
2926 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2929 if (vs->has_video > 1)
2930 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2931 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2932 vs->oformat = av_guess_format("mp4", NULL, NULL);
2934 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2937 return AVERROR_MUXER_NOT_FOUND;
2939 if (hls->segment_filename) {
2940 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2944 p = strrchr(vs->m3u8_name, '.');
2948 vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
2950 return AVERROR(ENOMEM);
2956 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2957 if (hls->nb_varstreams > 1)
2958 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2959 if (hls->flags & HLS_SINGLE_FILE) {
2960 vs->fmp4_init_filename = av_strdup(vs->basename);
2961 if (!vs->fmp4_init_filename)
2962 return AVERROR(ENOMEM);
2964 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2965 if (!vs->fmp4_init_filename)
2966 return AVERROR(ENOMEM);
2967 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2968 fmp4_init_filename_len);
2969 if (hls->nb_varstreams > 1) {
2970 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2971 av_freep(&vs->fmp4_init_filename);
2972 ret = format_name(hls->fmp4_init_filename,
2973 &vs->fmp4_init_filename, i, vs->varname);
2975 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2981 p = strrchr(vs->m3u8_name, '/');
2985 vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
2986 vs->fmp4_init_filename);
2989 vs->base_output_dirname = av_strdup(vs->fmp4_init_filename);
2991 if (!vs->base_output_dirname)
2992 return AVERROR(ENOMEM);
2996 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
3000 if (vs->has_subtitle) {
3001 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
3002 if (!vs->vtt_oformat)
3003 return AVERROR_MUXER_NOT_FOUND;
3005 p = strrchr(vs->m3u8_name, '.');
3009 vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
3010 if (!vs->vtt_basename)
3011 return AVERROR(ENOMEM);
3013 if (hls->subtitle_filename) {
3014 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
3018 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
3019 if (!vs->vtt_m3u8_name)
3020 return AVERROR(ENOMEM);
3026 if ((ret = hls_mux_init(s, vs)) < 0)
3029 if (hls->flags & HLS_APPEND_LIST) {
3030 parse_playlist(s, vs->m3u8_name, vs);
3031 vs->discontinuity = 1;
3032 if (hls->init_time > 0) {
3033 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3034 " hls_init_time value will have no effect\n");
3036 hls->recording_time = hls->time * AV_TIME_BASE;
3040 if ((ret = hls_start(s, vs)) < 0)
3048 #define OFFSET(x) offsetof(HLSContext, x)
3049 #define E AV_OPT_FLAG_ENCODING_PARAM
3050 static const AVOption options[] = {
3051 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3052 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3053 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3054 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3055 {"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},
3056 {"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},
3057 {"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},
3059 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3061 {"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},
3062 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3063 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3064 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3065 {"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},
3066 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3067 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3068 {"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},
3069 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3070 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3071 {"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"},
3072 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3073 {"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"},
3074 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3075 {"hls_fmp4_init_resend", "resend fragment mp4 init file after refresh m3u8 every time", OFFSET(resend_init_file), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3076 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3077 {"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"},
3078 {"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"},
3079 {"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"},
3080 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3081 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3082 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3083 {"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"},
3084 {"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"},
3085 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3086 {"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"},
3087 {"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"},
3088 {"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"},
3089 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3090 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3091 {"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"},
3092 #if FF_API_HLS_USE_LOCALTIME
3093 {"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 },
3095 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3096 #if FF_API_HLS_USE_LOCALTIME
3097 {"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 },
3099 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3100 {"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" },
3101 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3102 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3103 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3104 {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_LAST-1, E, "start_sequence_source_type" },
3105 {"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" },
3106 {"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" },
3107 {"epoch_us", "microseconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3108 {"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" },
3109 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3110 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3111 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3112 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3113 {"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},
3114 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3115 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3116 {"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 },
3117 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3121 static const AVClass hls_class = {
3122 .class_name = "hls muxer",
3123 .item_name = av_default_item_name,
3125 .version = LIBAVUTIL_VERSION_INT,
3129 AVOutputFormat ff_hls_muxer = {
3131 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3132 .extensions = "m3u8",
3133 .priv_data_size = sizeof(HLSContext),
3134 .audio_codec = AV_CODEC_ID_AAC,
3135 .video_codec = AV_CODEC_ID_H264,
3136 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3137 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3139 .write_header = hls_write_header,
3140 .write_packet = hls_write_packet,
3141 .write_trailer = hls_write_trailer,
3142 .deinit = hls_deinit,
3143 .priv_class = &hls_class,