1 /*
2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #include "config.h"
24 #include <float.h>
25 #include <stdint.h>
26 #if HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29
30 #if CONFIG_GCRYPT
31 #include <gcrypt.h>
32 #elif CONFIG_OPENSSL
33 #include <openssl/rand.h>
34 #endif
35
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"
46
47 #include "avformat.h"
48 #include "avio_internal.h"
49 #if CONFIG_HTTP_PROTOCOL
50 #include "http.h"
51 #endif
52 #include "hlsplaylist.h"
53 #include "internal.h"
54 #include "os_support.h"
55
56 typedef enum {
57 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
58 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
59 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
60 HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
61 HLS_START_SEQUENCE_LAST, // unused
62 } StartSequenceSourceType;
63
64 typedef enum {
65 CODEC_ATTRIBUTE_WRITTEN = 0,
66 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
67 } CodecAttributeStatus;
68
69 #define KEYSIZE 16
70 #define LINE_BUFFER_SIZE MAX_URL_SIZE
71 #define HLS_MICROSECOND_UNIT 1000000
72 #define POSTFIX_PATTERN "_%d"
73
74 typedef struct HLSSegment {
75 char filename[MAX_URL_SIZE];
76 char sub_filename[MAX_URL_SIZE];
77 double duration; /* in seconds */
78 int discont;
79 int64_t pos;
80 int64_t size;
81 int64_t keyframe_pos;
82 int64_t keyframe_size;
83 unsigned var_stream_idx;
84
85 char key_uri[LINE_BUFFER_SIZE + 1];
86 char iv_string[KEYSIZE*2 + 1];
87
88 struct HLSSegment *next;
89 } HLSSegment;
90
91 typedef enum HLSFlags {
92 // Generate a single media file and use byte ranges in the playlist.
93 HLS_SINGLE_FILE = (1 << 0),
94 HLS_DELETE_SEGMENTS = (1 << 1),
95 HLS_ROUND_DURATIONS = (1 << 2),
96 HLS_DISCONT_START = (1 << 3),
97 HLS_OMIT_ENDLIST = (1 << 4),
98 HLS_SPLIT_BY_TIME = (1 << 5),
99 HLS_APPEND_LIST = (1 << 6),
100 HLS_PROGRAM_DATE_TIME = (1 << 7),
101 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
102 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
103 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
104 HLS_TEMP_FILE = (1 << 11),
105 HLS_PERIODIC_REKEY = (1 << 12),
106 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
107 HLS_I_FRAMES_ONLY = (1 << 14),
108 } HLSFlags;
109
110 typedef enum {
111 SEGMENT_TYPE_MPEGTS,
112 SEGMENT_TYPE_FMP4,
113 } SegmentType;
114
115 typedef struct VariantStream {
116 unsigned var_stream_idx;
117 unsigned number;
118 int64_t sequence;
119 ff_const59 AVOutputFormat *oformat;
120 ff_const59 AVOutputFormat *vtt_oformat;
121 AVIOContext *out;
122 int packets_written;
123 int init_range_length;
124 uint8_t *temp_buffer;
125 uint8_t *init_buffer;
126
127 AVFormatContext *avf;
128 AVFormatContext *vtt_avf;
129
130 int has_video;
131 int has_subtitle;
132 int new_start;
133 int start_pts_from_audio;
134 double dpp; // duration per packet
135 int64_t start_pts;
136 int64_t end_pts;
137 int64_t video_lastpos;
138 int64_t video_keyframe_pos;
139 int64_t video_keyframe_size;
140 double duration; // last segment duration computed so far, in seconds
141 int64_t start_pos; // last segment starting position
142 int64_t size; // last segment size
143 int nb_entries;
144 int discontinuity_set;
145 int discontinuity;
146 int reference_stream_index;
147
148 HLSSegment *segments;
149 HLSSegment *last_segment;
150 HLSSegment *old_segments;
151
152 char *basename;
153 char *vtt_basename;
154 char *vtt_m3u8_name;
155 char *m3u8_name;
156
157 double initial_prog_date_time;
158 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
159
160 char *fmp4_init_filename;
161 char *base_output_dirname;
162
163 int encrypt_started;
164
165 char key_file[LINE_BUFFER_SIZE + 1];
166 char key_uri[LINE_BUFFER_SIZE + 1];
167 char key_string[KEYSIZE*2 + 1];
168 char iv_string[KEYSIZE*2 + 1];
169
170 AVStream **streams;
171 char codec_attr[128];
172 CodecAttributeStatus attr_status;
173 unsigned int nb_streams;
174 int m3u8_created; /* status of media play-list creation */
175 int is_default; /* default status of audio group */
176 const char *language; /* audio lauguage name */
177 const char *agroup; /* audio group name */
178 const char *sgroup; /* subtitle group name */
179 const char *ccgroup; /* closed caption group name */
180 const char *varname; /* variant name */
181 } VariantStream;
182
183 typedef struct ClosedCaptionsStream {
184 const char *ccgroup; /* closed caption group name */
185 const char *instreamid; /* closed captions INSTREAM-ID */
186 const char *language; /* closed captions langauge */
187 } ClosedCaptionsStream;
188
189 typedef struct HLSContext {
190 const AVClass *class; // Class for private options.
191 int64_t start_sequence;
192 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
193
194 float time; // Set by a private option.
195 float init_time; // Set by a private option.
196 int max_nb_segments; // Set by a private option.
197 int hls_delete_threshold; // Set by a private option.
198 #if FF_API_HLS_WRAP
199 int wrap; // Set by a private option.
200 #endif
201 uint32_t flags; // enum HLSFlags
202 uint32_t pl_type; // enum PlaylistType
203 char *segment_filename;
204 char *fmp4_init_filename;
205 int segment_type;
206 int resend_init_file; ///< resend init file into disk after refresh m3u8
207
208 int use_localtime; ///< flag to expand filename with localtime
209 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
210 int allowcache;
211 int64_t recording_time;
212 int64_t max_seg_size; // every segment file max size
213
214 char *baseurl;
215 char *vtt_format_options_str;
216 char *subtitle_filename;
217 AVDictionary *format_options;
218
219 int encrypt;
220 char *key;
221 char *key_url;
222 char *iv;
223 char *key_basename;
224 int encrypt_started;
225
226 char *key_info_file;
227 char key_file[LINE_BUFFER_SIZE + 1];
228 char key_uri[LINE_BUFFER_SIZE + 1];
229 char key_string[KEYSIZE*2 + 1];
230 char iv_string[KEYSIZE*2 + 1];
231 AVDictionary *vtt_format_options;
232
233 char *method;
234 char *user_agent;
235
236 VariantStream *var_streams;
237 unsigned int nb_varstreams;
238 ClosedCaptionsStream *cc_streams;
239 unsigned int nb_ccstreams;
240
241 int master_m3u8_created; /* status of master play-list creation */
242 char *master_m3u8_url; /* URL of the master m3u8 file */
243 int version; /* HLS version */
244 char *var_stream_map; /* user specified variant stream map string */
245 char *cc_stream_map; /* user specified closed caption streams map string */
246 char *master_pl_name;
247 unsigned int master_publish_rate;
248 int http_persistent;
249 AVIOContext *m3u8_out;
250 AVIOContext *sub_m3u8_out;
251 int64_t timeout;
252 int ignore_io_errors;
253 char *headers;
254 int has_default_key; /* has DEFAULT field of var_stream_map */
255 int has_video_m3u8; /* has video stream m3u8 list */
256 } HLSContext;
257
hlsenc_io_open(AVFormatContext * s,AVIOContext ** pb,char * filename,AVDictionary ** options)258 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
259 AVDictionary **options)
260 {
261 HLSContext *hls = s->priv_data;
262 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
263 int err = AVERROR_MUXER_NOT_FOUND;
264 if (!*pb || !http_base_proto || !hls->http_persistent) {
265 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
266 #if CONFIG_HTTP_PROTOCOL
267 } else {
268 URLContext *http_url_context = ffio_geturlcontext(*pb);
269 av_assert0(http_url_context);
270 err = ff_http_do_new_request(http_url_context, filename);
271 if (err < 0)
272 ff_format_io_close(s, pb);
273
274 #endif
275 }
276 return err;
277 }
278
hlsenc_io_close(AVFormatContext * s,AVIOContext ** pb,char * filename)279 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
280 {
281 HLSContext *hls = s->priv_data;
282 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
283 int ret = 0;
284 if (!*pb)
285 return ret;
286 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
287 ff_format_io_close(s, pb);
288 #if CONFIG_HTTP_PROTOCOL
289 } else {
290 URLContext *http_url_context = ffio_geturlcontext(*pb);
291 av_assert0(http_url_context);
292 avio_flush(*pb);
293 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
294 ret = ff_http_get_shutdown_status(http_url_context);
295 #endif
296 }
297 return ret;
298 }
299
set_http_options(AVFormatContext * s,AVDictionary ** options,HLSContext * c)300 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
301 {
302 int http_base_proto = ff_is_http_proto(s->url);
303
304 if (c->method) {
305 av_dict_set(options, "method", c->method, 0);
306 } else if (http_base_proto) {
307 av_dict_set(options, "method", "PUT", 0);
308 }
309 if (c->user_agent)
310 av_dict_set(options, "user_agent", c->user_agent, 0);
311 if (c->http_persistent)
312 av_dict_set_int(options, "multiple_requests", 1, 0);
313 if (c->timeout >= 0)
314 av_dict_set_int(options, "timeout", c->timeout, 0);
315 if (c->headers)
316 av_dict_set(options, "headers", c->headers, 0);
317 }
318
write_codec_attr(AVStream * st,VariantStream * vs)319 static void write_codec_attr(AVStream *st, VariantStream *vs)
320 {
321 int codec_strlen = strlen(vs->codec_attr);
322 char attr[32];
323
324 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
325 return;
326 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
327 return;
328
329 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
330 uint8_t *data = st->codecpar->extradata;
331 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
332 snprintf(attr, sizeof(attr),
333 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
334 } else {
335 goto fail;
336 }
337 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
338 snprintf(attr, sizeof(attr), "mp4a.40.33");
339 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
340 snprintf(attr, sizeof(attr), "mp4a.40.34");
341 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
342 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
343 snprintf(attr, sizeof(attr), "mp4a.40.2");
344 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
345 snprintf(attr, sizeof(attr), "ac-3");
346 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
347 snprintf(attr, sizeof(attr), "ec-3");
348 } else {
349 goto fail;
350 }
351 // Don't write the same attribute multiple times
352 if (!av_stristr(vs->codec_attr, attr)) {
353 snprintf(vs->codec_attr + codec_strlen,
354 sizeof(vs->codec_attr) - codec_strlen,
355 "%s%s", codec_strlen ? "," : "", attr);
356 }
357 return;
358
359 fail:
360 vs->codec_attr[0] = '\0';
361 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
362 return;
363 }
364
replace_str_data_in_filename(char ** s,const char * filename,char placeholder,const char * datastring)365 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
366 {
367 const char *p;
368 char *new_filename;
369 char c;
370 int addchar_count;
371 int found_count = 0;
372 AVBPrint buf;
373
374 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
375
376 p = filename;
377 for (;;) {
378 c = *p;
379 if (c == '\0')
380 break;
381 if (c == '%' && *(p+1) == '%') // %%
382 addchar_count = 2;
383 else if (c == '%' && *(p+1) == placeholder) {
384 av_bprintf(&buf, "%s", datastring);
385 p += 2;
386 addchar_count = 0;
387 found_count ++;
388 } else
389 addchar_count = 1;
390
391 if (addchar_count > 0) {
392 av_bprint_append_data(&buf, p, addchar_count);
393 p += addchar_count;
394 }
395 }
396 if (!av_bprint_is_complete(&buf)) {
397 av_bprint_finalize(&buf, NULL);
398 return -1;
399 }
400 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
401 return -1;
402 *s = new_filename;
403 return found_count;
404 }
405
replace_int_data_in_filename(char ** s,const char * filename,char placeholder,int64_t number)406 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
407 {
408 const char *p;
409 char *new_filename;
410 char c;
411 int nd, addchar_count;
412 int found_count = 0;
413 AVBPrint buf;
414
415 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
416
417 p = filename;
418 for (;;) {
419 c = *p;
420 if (c == '\0')
421 break;
422 if (c == '%' && *(p+1) == '%') // %%
423 addchar_count = 2;
424 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
425 nd = 0;
426 addchar_count = 1;
427 while (av_isdigit(*(p + addchar_count))) {
428 nd = nd * 10 + *(p + addchar_count) - '0';
429 addchar_count++;
430 }
431
432 if (*(p + addchar_count) == placeholder) {
433 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
434 p += (addchar_count + 1);
435 addchar_count = 0;
436 found_count++;
437 }
438
439 } else
440 addchar_count = 1;
441
442 av_bprint_append_data(&buf, p, addchar_count);
443 p += addchar_count;
444 }
445 if (!av_bprint_is_complete(&buf)) {
446 av_bprint_finalize(&buf, NULL);
447 return -1;
448 }
449 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
450 return -1;
451 *s = new_filename;
452 return found_count;
453 }
454
write_styp(AVIOContext * pb)455 static void write_styp(AVIOContext *pb)
456 {
457 avio_wb32(pb, 24);
458 ffio_wfourcc(pb, "styp");
459 ffio_wfourcc(pb, "msdh");
460 avio_wb32(pb, 0); /* minor */
461 ffio_wfourcc(pb, "msdh");
462 ffio_wfourcc(pb, "msix");
463 }
464
flush_dynbuf(VariantStream * vs,int * range_length)465 static int flush_dynbuf(VariantStream *vs, int *range_length)
466 {
467 AVFormatContext *ctx = vs->avf;
468
469 if (!ctx->pb) {
470 return AVERROR(EINVAL);
471 }
472
473 // flush
474 av_write_frame(ctx, NULL);
475
476 // write out to file
477 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
478 ctx->pb = NULL;
479 avio_write(vs->out, vs->temp_buffer, *range_length);
480 avio_flush(vs->out);
481
482 // re-open buffer
483 return avio_open_dyn_buf(&ctx->pb);
484 }
485
reflush_dynbuf(VariantStream * vs,int * range_length)486 static void reflush_dynbuf(VariantStream *vs, int *range_length)
487 {
488 // re-open buffer
489 avio_write(vs->out, vs->temp_buffer, *range_length);
490 }
491
492 #if HAVE_DOS_PATHS
493 #define SEPARATOR '\\'
494 #else
495 #define SEPARATOR '/'
496 #endif
497
hls_delete_file(HLSContext * hls,AVFormatContext * avf,const char * path,const char * proto)498 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
499 const char *path, const char *proto)
500 {
501 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
502 AVDictionary *opt = NULL;
503 AVIOContext *out = NULL;
504 int ret;
505 av_dict_set(&opt, "method", "DELETE", 0);
506 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
507 av_dict_free(&opt);
508 if (ret < 0)
509 return hls->ignore_io_errors ? 1 : ret;
510 ff_format_io_close(avf, &out);
511 } else if (unlink(path) < 0) {
512 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
513 path, strerror(errno));
514 }
515 return 0;
516 }
517
hls_delete_old_segments(AVFormatContext * s,HLSContext * hls,VariantStream * vs)518 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
519 VariantStream *vs)
520 {
521
522 HLSSegment *segment, *previous_segment = NULL;
523 float playlist_duration = 0.0f;
524 int ret = 0;
525 int segment_cnt = 0;
526 AVBPrint path;
527 const char *dirname = NULL;
528 char *dirname_r = NULL;
529 char *dirname_repl = NULL;
530 const char *vtt_dirname = NULL;
531 char *vtt_dirname_r = NULL;
532 const char *proto = NULL;
533
534 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
535
536 segment = vs->segments;
537 while (segment) {
538 playlist_duration += segment->duration;
539 segment = segment->next;
540 }
541
542 segment = vs->old_segments;
543 segment_cnt = 0;
544 while (segment) {
545 playlist_duration -= segment->duration;
546 previous_segment = segment;
547 segment = previous_segment->next;
548 segment_cnt++;
549 if (playlist_duration <= -previous_segment->duration) {
550 previous_segment->next = NULL;
551 break;
552 }
553 if (segment_cnt >= hls->hls_delete_threshold) {
554 previous_segment->next = NULL;
555 break;
556 }
557 }
558
559 if (segment && !hls->use_localtime_mkdir) {
560 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
561 dirname = av_dirname(dirname_r);
562 }
563
564 /* if %v is present in the file's directory
565 * all segment belongs to the same variant, so do it only once before the loop*/
566 if (dirname && av_stristr(dirname, "%v")) {
567 if (!vs->varname) {
568 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
569 ret = AVERROR(EINVAL);
570 goto fail;
571 }
572 } else {
573 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
574 ret = AVERROR(EINVAL);
575 goto fail;
576 }
577 }
578
579 dirname = dirname_repl;
580 }
581
582 while (segment) {
583 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
584 segment->filename);
585 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
586 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
587 av_bprintf(&path, "%s", segment->filename);
588
589 if (!av_bprint_is_complete(&path)) {
590 ret = AVERROR(ENOMEM);
591 goto fail;
592 }
593
594 proto = avio_find_protocol_name(s->url);
595 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
596 goto fail;
597
598 if ((segment->sub_filename[0] != '\0')) {
599 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
600 vtt_dirname = av_dirname(vtt_dirname_r);
601
602 av_bprint_clear(&path);
603 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
604 segment->sub_filename);
605 av_freep(&vtt_dirname_r);
606
607 if (!av_bprint_is_complete(&path)) {
608 ret = AVERROR(ENOMEM);
609 goto fail;
610 }
611
612 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
613 goto fail;
614 }
615 av_bprint_clear(&path);
616 previous_segment = segment;
617 segment = previous_segment->next;
618 av_freep(&previous_segment);
619 }
620
621 fail:
622 av_bprint_finalize(&path, NULL);
623 av_freep(&dirname_r);
624 av_freep(&dirname_repl);
625
626 return ret;
627 }
628
randomize(uint8_t * buf,int len)629 static int randomize(uint8_t *buf, int len)
630 {
631 #if CONFIG_GCRYPT
632 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
633 return 0;
634 #elif CONFIG_OPENSSL
635 if (RAND_bytes(buf, len))
636 return 0;
637 #else
638 return AVERROR(ENOSYS);
639 #endif
640 return AVERROR(EINVAL);
641 }
642
do_encrypt(AVFormatContext * s,VariantStream * vs)643 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
644 {
645 HLSContext *hls = s->priv_data;
646 int ret;
647 int len;
648 AVIOContext *pb;
649 uint8_t key[KEYSIZE];
650 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
651
652 len = strlen(key_basename_source) + 4 + 1;
653 hls->key_basename = av_mallocz(len);
654 if (!hls->key_basename)
655 return AVERROR(ENOMEM);
656
657 av_strlcpy(hls->key_basename, key_basename_source, len);
658 av_strlcat(hls->key_basename, ".key", len);
659
660 if (hls->key_url) {
661 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
662 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
663 } else {
664 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
665 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
666 }
667
668 if (!*hls->iv_string) {
669 uint8_t iv[16] = { 0 };
670 char buf[33];
671
672 if (!hls->iv) {
673 AV_WB64(iv + 8, vs->sequence);
674 } else {
675 memcpy(iv, hls->iv, sizeof(iv));
676 }
677 ff_data_to_hex(buf, iv, sizeof(iv), 0);
678 buf[32] = '\0';
679 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
680 }
681
682 if (!*hls->key_uri) {
683 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
684 return AVERROR(EINVAL);
685 }
686
687 if (!*hls->key_file) {
688 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
689 return AVERROR(EINVAL);
690 }
691
692 if (!*hls->key_string) {
693 AVDictionary *options = NULL;
694 if (!hls->key) {
695 if ((ret = randomize(key, sizeof(key))) < 0) {
696 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
697 return ret;
698 }
699 } else {
700 memcpy(key, hls->key, sizeof(key));
701 }
702
703 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
704 set_http_options(s, &options, hls);
705 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
706 av_dict_free(&options);
707 if (ret < 0)
708 return ret;
709 avio_seek(pb, 0, SEEK_CUR);
710 avio_write(pb, key, KEYSIZE);
711 avio_close(pb);
712 }
713 return 0;
714 }
715
716
hls_encryption_start(AVFormatContext * s,VariantStream * vs)717 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
718 {
719 HLSContext *hls = s->priv_data;
720 int ret;
721 AVIOContext *pb;
722 uint8_t key[KEYSIZE];
723 AVDictionary *options = NULL;
724
725 set_http_options(s, &options, hls);
726 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
727 av_dict_free(&options);
728 if (ret < 0) {
729 av_log(hls, AV_LOG_ERROR,
730 "error opening key info file %s\n", hls->key_info_file);
731 return ret;
732 }
733
734 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
735 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
736
737 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
738 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
739
740 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
741 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
742
743 ff_format_io_close(s, &pb);
744
745 if (!*vs->key_uri) {
746 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
747 return AVERROR(EINVAL);
748 }
749
750 if (!*vs->key_file) {
751 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
752 return AVERROR(EINVAL);
753 }
754
755 set_http_options(s, &options, hls);
756 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
757 av_dict_free(&options);
758 if (ret < 0) {
759 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
760 return ret;
761 }
762
763 ret = avio_read(pb, key, sizeof(key));
764 ff_format_io_close(s, &pb);
765 if (ret != sizeof(key)) {
766 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
767 if (ret >= 0 || ret == AVERROR_EOF)
768 ret = AVERROR(EINVAL);
769 return ret;
770 }
771 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
772
773 return 0;
774 }
775
hls_mux_init(AVFormatContext * s,VariantStream * vs)776 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
777 {
778 AVDictionary *options = NULL;
779 HLSContext *hls = s->priv_data;
780 AVFormatContext *oc;
781 AVFormatContext *vtt_oc = NULL;
782 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
783 int remaining_options;
784 int i, ret;
785
786 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
787 if (ret < 0)
788 return ret;
789 oc = vs->avf;
790
791 oc->url = av_strdup("");
792 if (!oc->url)
793 return AVERROR(ENOMEM);
794
795 oc->interrupt_callback = s->interrupt_callback;
796 oc->max_delay = s->max_delay;
797 oc->opaque = s->opaque;
798 oc->io_open = s->io_open;
799 oc->io_close = s->io_close;
800 oc->strict_std_compliance = s->strict_std_compliance;
801 av_dict_copy(&oc->metadata, s->metadata, 0);
802
803 if (vs->vtt_oformat) {
804 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
805 if (ret < 0)
806 return ret;
807 vtt_oc = vs->vtt_avf;
808 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
809 }
810
811 for (i = 0; i < vs->nb_streams; i++) {
812 AVStream *st;
813 AVFormatContext *loc;
814 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
815 loc = vtt_oc;
816 else
817 loc = oc;
818
819 if (!(st = avformat_new_stream(loc, NULL)))
820 return AVERROR(ENOMEM);
821 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
822 if (!oc->oformat->codec_tag ||
823 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
824 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
825 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
826 } else {
827 st->codecpar->codec_tag = 0;
828 }
829
830 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
831 st->time_base = vs->streams[i]->time_base;
832 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
833 }
834
835 vs->start_pos = 0;
836 vs->new_start = 1;
837
838 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
839 if (hls->http_persistent > 0) {
840 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
841 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
842 }
843 if (hls->max_seg_size > 0) {
844 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
845 return AVERROR_PATCHWELCOME;
846 }
847 }
848
849 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
850 return ret;
851
852 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
853 set_http_options(s, &options, hls);
854 if (byterange_mode) {
855 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
856 } else {
857 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
858 }
859 av_dict_free(&options);
860 }
861 if (ret < 0) {
862 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
863 return ret;
864 }
865
866 av_dict_copy(&options, hls->format_options, 0);
867 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
868 av_dict_set(&options, "fflags", "-autobsf", 0);
869 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
870 } else {
871 /* We only require one PAT/PMT per segment. */
872 char period[21];
873 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
874 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
875 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
876 }
877 ret = avformat_init_output(oc, &options);
878 remaining_options = av_dict_count(options);
879 av_dict_free(&options);
880 if (ret < 0)
881 return ret;
882 if (remaining_options) {
883 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
884 return AVERROR(EINVAL);
885 }
886 avio_flush(oc->pb);
887 return 0;
888 }
889
find_segment_by_filename(HLSSegment * segment,const char * filename)890 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
891 {
892 while (segment) {
893 if (!av_strcasecmp(segment->filename,filename))
894 return segment;
895 segment = segment->next;
896 }
897 return (HLSSegment *) NULL;
898 }
899
sls_flags_filename_process(struct AVFormatContext * s,HLSContext * hls,VariantStream * vs,HLSSegment * en,double duration,int64_t pos,int64_t size)900 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
901 VariantStream *vs, HLSSegment *en,
902 double duration, int64_t pos, int64_t size)
903 {
904 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
905 strlen(vs->current_segment_final_filename_fmt)) {
906 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
907 if (!new_url) {
908 return AVERROR(ENOMEM);
909 }
910 ff_format_set_url(vs->avf, new_url);
911 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
912 char *filename = NULL;
913 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
914 av_log(hls, AV_LOG_ERROR,
915 "Invalid second level segment filename template '%s', "
916 "you can try to remove second_level_segment_size flag\n",
917 vs->avf->url);
918 av_freep(&filename);
919 return AVERROR(EINVAL);
920 }
921 ff_format_set_url(vs->avf, filename);
922 }
923 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
924 char *filename = NULL;
925 if (replace_int_data_in_filename(&filename, vs->avf->url,
926 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
927 av_log(hls, AV_LOG_ERROR,
928 "Invalid second level segment filename template '%s', "
929 "you can try to remove second_level_segment_time flag\n",
930 vs->avf->url);
931 av_freep(&filename);
932 return AVERROR(EINVAL);
933 }
934 ff_format_set_url(vs->avf, filename);
935 }
936 }
937 return 0;
938 }
939
sls_flag_check_duration_size_index(HLSContext * hls)940 static int sls_flag_check_duration_size_index(HLSContext *hls)
941 {
942 int ret = 0;
943
944 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
945 av_log(hls, AV_LOG_ERROR,
946 "second_level_segment_duration hls_flag requires strftime to be true\n");
947 ret = AVERROR(EINVAL);
948 }
949 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
950 av_log(hls, AV_LOG_ERROR,
951 "second_level_segment_size hls_flag requires strfime to be true\n");
952 ret = AVERROR(EINVAL);
953 }
954 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
955 av_log(hls, AV_LOG_ERROR,
956 "second_level_segment_index hls_flag requires strftime to be true\n");
957 ret = AVERROR(EINVAL);
958 }
959
960 return ret;
961 }
962
sls_flag_check_duration_size(HLSContext * hls,VariantStream * vs)963 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
964 {
965 const char *proto = avio_find_protocol_name(vs->basename);
966 int segment_renaming_ok = proto && !strcmp(proto, "file");
967 int ret = 0;
968
969 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
970 av_log(hls, AV_LOG_ERROR,
971 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
972 ret = AVERROR(EINVAL);
973 }
974 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
975 av_log(hls, AV_LOG_ERROR,
976 "second_level_segment_size hls_flag works only with file protocol segment names\n");
977 ret = AVERROR(EINVAL);
978 }
979
980 return ret;
981 }
982
sls_flag_file_rename(HLSContext * hls,VariantStream * vs,char * old_filename)983 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
984 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
985 strlen(vs->current_segment_final_filename_fmt)) {
986 ff_rename(old_filename, vs->avf->url, hls);
987 }
988 }
989
sls_flag_use_localtime_filename(AVFormatContext * oc,HLSContext * c,VariantStream * vs)990 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
991 {
992 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
993 char *filename = NULL;
994 if (replace_int_data_in_filename(&filename,
995 #if FF_API_HLS_WRAP
996 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
997 #else
998 oc->url, 'd', vs->sequence) < 1) {
999 #endif
1000 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1001 "you can try to remove second_level_segment_index flag\n",
1002 oc->url);
1003 av_freep(&filename);
1004 return AVERROR(EINVAL);
1005 }
1006 ff_format_set_url(oc, filename);
1007 }
1008 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1009 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1010 sizeof(vs->current_segment_final_filename_fmt));
1011 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1012 char *filename = NULL;
1013 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1014 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1015 "you can try to remove second_level_segment_size flag\n",
1016 oc->url);
1017 av_freep(&filename);
1018 return AVERROR(EINVAL);
1019 }
1020 ff_format_set_url(oc, filename);
1021 }
1022 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1023 char *filename = NULL;
1024 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1025 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1026 "you can try to remove second_level_segment_time flag\n",
1027 oc->url);
1028 av_freep(&filename);
1029 return AVERROR(EINVAL);
1030 }
1031 ff_format_set_url(oc, filename);
1032 }
1033 }
1034 return 0;
1035 }
1036
1037 /* Create a new segment and append it to the segment list */
1038 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1039 VariantStream *vs, double duration, int64_t pos,
1040 int64_t size)
1041 {
1042 HLSSegment *en = av_malloc(sizeof(*en));
1043 const char *filename;
1044 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1045 int ret;
1046
1047 if (!en)
1048 return AVERROR(ENOMEM);
1049
1050 en->var_stream_idx = vs->var_stream_idx;
1051 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1052 if (ret < 0) {
1053 av_freep(&en);
1054 return ret;
1055 }
1056
1057 filename = av_basename(vs->avf->url);
1058
1059 if (hls->use_localtime_mkdir) {
1060 filename = vs->avf->url;
1061 }
1062 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1063 && !byterange_mode) {
1064 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1065 }
1066 av_strlcpy(en->filename, filename, sizeof(en->filename));
1067
1068 if (vs->has_subtitle)
1069 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1070 else
1071 en->sub_filename[0] = '\0';
1072
1073 en->duration = duration;
1074 en->pos = pos;
1075 en->size = size;
1076 en->keyframe_pos = vs->video_keyframe_pos;
1077 en->keyframe_size = vs->video_keyframe_size;
1078 en->next = NULL;
1079 en->discont = 0;
1080
1081 if (vs->discontinuity) {
1082 en->discont = 1;
1083 vs->discontinuity = 0;
1084 }
1085
1086 if (hls->key_info_file || hls->encrypt) {
1087 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1088 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1089 }
1090
1091 if (!vs->segments)
1092 vs->segments = en;
1093 else
1094 vs->last_segment->next = en;
1095
1096 vs->last_segment = en;
1097
1098 // EVENT or VOD playlists imply sliding window cannot be used
1099 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1100 hls->max_nb_segments = 0;
1101
1102 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1103 en = vs->segments;
1104 vs->initial_prog_date_time += en->duration;
1105 vs->segments = en->next;
1106 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1107 #if FF_API_HLS_WRAP
1108 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1109 #else
1110 !(hls->flags & HLS_SINGLE_FILE)) {
1111 #endif
1112 en->next = vs->old_segments;
1113 vs->old_segments = en;
1114 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1115 return ret;
1116 } else
1117 av_freep(&en);
1118 } else
1119 vs->nb_entries++;
1120
1121 if (hls->max_seg_size > 0) {
1122 return 0;
1123 }
1124 vs->sequence++;
1125
1126 return 0;
1127 }
1128
1129 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1130 {
1131 HLSContext *hls = s->priv_data;
1132 AVIOContext *in;
1133 int ret = 0, is_segment = 0;
1134 int64_t new_start_pos;
1135 char line[MAX_URL_SIZE];
1136 const char *ptr;
1137 const char *end;
1138
1139 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1140 &s->interrupt_callback, NULL,
1141 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1142 return ret;
1143
1144 ff_get_chomp_line(in, line, sizeof(line));
1145 if (strcmp(line, "#EXTM3U")) {
1146 ret = AVERROR_INVALIDDATA;
1147 goto fail;
1148 }
1149
1150 vs->discontinuity = 0;
1151 while (!avio_feof(in)) {
1152 ff_get_chomp_line(in, line, sizeof(line));
1153 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1154 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1155 if (tmp_sequence < vs->sequence)
1156 av_log(hls, AV_LOG_VERBOSE,
1157 "Found playlist sequence number was smaller """
1158 "than specified start sequence number: %"PRId64" < %"PRId64", "
1159 "omitting\n", tmp_sequence, hls->start_sequence);
1160 else {
1161 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1162 vs->sequence = tmp_sequence;
1163 }
1164 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1165 is_segment = 1;
1166 vs->discontinuity = 1;
1167 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1168 is_segment = 1;
1169 vs->duration = atof(ptr);
1170 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1171 ptr = av_stristr(line, "URI=\"");
1172 if (ptr) {
1173 ptr += strlen("URI=\"");
1174 end = av_stristr(ptr, ",");
1175 if (end) {
1176 av_strlcpy(vs->key_uri, ptr, end - ptr);
1177 } else {
1178 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1179 }
1180 }
1181
1182 ptr = av_stristr(line, "IV=0x");
1183 if (ptr) {
1184 ptr += strlen("IV=0x");
1185 end = av_stristr(ptr, ",");
1186 if (end) {
1187 av_strlcpy(vs->iv_string, ptr, end - ptr);
1188 } else {
1189 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1190 }
1191 }
1192
1193 } else if (av_strstart(line, "#", NULL)) {
1194 continue;
1195 } else if (line[0]) {
1196 if (is_segment) {
1197 char *new_file = av_strdup(line);
1198 if (!new_file) {
1199 ret = AVERROR(ENOMEM);
1200 goto fail;
1201 }
1202 ff_format_set_url(vs->avf, new_file);
1203 is_segment = 0;
1204 new_start_pos = avio_tell(vs->avf->pb);
1205 vs->size = new_start_pos - vs->start_pos;
1206 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1207 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1208 if (ret < 0)
1209 goto fail;
1210 vs->start_pos = new_start_pos;
1211 }
1212 }
1213 }
1214
1215 fail:
1216 avio_close(in);
1217 return ret;
1218 }
1219
1220 static void hls_free_segments(HLSSegment *p)
1221 {
1222 HLSSegment *en;
1223
1224 while (p) {
1225 en = p;
1226 p = p->next;
1227 av_freep(&en);
1228 }
1229 }
1230
1231 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1232 {
1233 size_t len = strlen(oc->url);
1234 char *final_filename = av_strdup(oc->url);
1235 int ret;
1236
1237 if (!final_filename)
1238 return AVERROR(ENOMEM);
1239 final_filename[len-4] = '\0';
1240 ret = ff_rename(oc->url, final_filename, s);
1241 oc->url[len-4] = '\0';
1242 av_freep(&final_filename);
1243 return ret;
1244 }
1245
1246 static const char* get_relative_url(const char *master_url, const char *media_url)
1247 {
1248 const char *p = strrchr(master_url, '/');
1249 size_t base_len = 0;
1250
1251 if (!p) p = strrchr(master_url, '\\');
1252
1253 if (p) {
1254 base_len = p - master_url;
1255 if (av_strncasecmp(master_url, media_url, base_len)) {
1256 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1257 return NULL;
1258 }
1259 } else {
1260 return media_url;
1261 }
1262
1263 return media_url + base_len + 1;
1264 }
1265
1266 static int64_t get_stream_bit_rate(AVStream *stream)
1267 {
1268 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1269 stream,
1270 AV_PKT_DATA_CPB_PROPERTIES,
1271 NULL
1272 );
1273
1274 if (stream->codecpar->bit_rate)
1275 return stream->codecpar->bit_rate;
1276 else if (props)
1277 return props->max_bitrate;
1278
1279 return 0;
1280 }
1281
1282 static int create_master_playlist(AVFormatContext *s,
1283 VariantStream * const input_vs)
1284 {
1285 HLSContext *hls = s->priv_data;
1286 VariantStream *vs, *temp_vs;
1287 AVStream *vid_st, *aud_st;
1288 AVDictionary *options = NULL;
1289 unsigned int i, j;
1290 int ret, bandwidth;
1291 const char *m3u8_rel_name = NULL;
1292 const char *vtt_m3u8_rel_name = NULL;
1293 const char *ccgroup;
1294 const char *sgroup = NULL;
1295 ClosedCaptionsStream *ccs;
1296 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1297 int is_file_proto = proto && !strcmp(proto, "file");
1298 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1299 char temp_filename[MAX_URL_SIZE];
1300
1301 input_vs->m3u8_created = 1;
1302 if (!hls->master_m3u8_created) {
1303 /* For the first time, wait until all the media playlists are created */
1304 for (i = 0; i < hls->nb_varstreams; i++)
1305 if (!hls->var_streams[i].m3u8_created)
1306 return 0;
1307 } else {
1308 /* Keep publishing the master playlist at the configured rate */
1309 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1310 input_vs->number % hls->master_publish_rate)
1311 return 0;
1312 }
1313
1314 set_http_options(s, &options, hls);
1315 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1316 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1317 av_dict_free(&options);
1318 if (ret < 0) {
1319 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1320 temp_filename);
1321 goto fail;
1322 }
1323
1324 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1325
1326 for (i = 0; i < hls->nb_ccstreams; i++) {
1327 ccs = &(hls->cc_streams[i]);
1328 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1329 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1330 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1331 if (ccs->language)
1332 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1333 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1334 }
1335
1336 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1337 for (i = 0; i < hls->nb_varstreams; i++) {
1338 vs = &(hls->var_streams[i]);
1339
1340 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1341 continue;
1342
1343 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1344 if (!m3u8_rel_name) {
1345 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1346 goto fail;
1347 }
1348
1349 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1350 }
1351
1352 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1353 for (i = 0; i < hls->nb_varstreams; i++) {
1354 vs = &(hls->var_streams[i]);
1355
1356 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1357 if (!m3u8_rel_name) {
1358 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1359 goto fail;
1360 }
1361
1362 vid_st = NULL;
1363 aud_st = NULL;
1364 for (j = 0; j < vs->nb_streams; j++) {
1365 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1366 vid_st = vs->streams[j];
1367 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1368 aud_st = vs->streams[j];
1369 }
1370
1371 if (!vid_st && !aud_st) {
1372 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1373 continue;
1374 }
1375
1376 /**
1377 * Traverse through the list of audio only rendition streams and find
1378 * the rendition which has highest bitrate in the same audio group
1379 */
1380 if (vs->agroup) {
1381 for (j = 0; j < hls->nb_varstreams; j++) {
1382 temp_vs = &(hls->var_streams[j]);
1383 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1384 temp_vs->agroup &&
1385 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1386 if (!aud_st)
1387 aud_st = temp_vs->streams[0];
1388 if (temp_vs->streams[0]->codecpar->bit_rate >
1389 aud_st->codecpar->bit_rate)
1390 aud_st = temp_vs->streams[0];
1391 }
1392 }
1393 }
1394
1395 bandwidth = 0;
1396 if (vid_st)
1397 bandwidth += get_stream_bit_rate(vid_st);
1398 if (aud_st)
1399 bandwidth += get_stream_bit_rate(aud_st);
1400 bandwidth += bandwidth / 10;
1401
1402 ccgroup = NULL;
1403 if (vid_st && vs->ccgroup) {
1404 /* check if this group name is available in the cc map string */
1405 for (j = 0; j < hls->nb_ccstreams; j++) {
1406 ccs = &(hls->cc_streams[j]);
1407 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1408 ccgroup = vs->ccgroup;
1409 break;
1410 }
1411 }
1412 if (j == hls->nb_ccstreams)
1413 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1414 vs->ccgroup);
1415 }
1416
1417 if (vid_st && vs->sgroup) {
1418 sgroup = vs->sgroup;
1419 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1420 if (!vtt_m3u8_rel_name) {
1421 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1422 break;
1423 }
1424
1425 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1426 }
1427
1428 if (!hls->has_default_key || !hls->has_video_m3u8) {
1429 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1430 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1431 } else {
1432 if (vid_st) {
1433 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1434 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1435 }
1436 }
1437 }
1438 fail:
1439 if (ret >=0)
1440 hls->master_m3u8_created = 1;
1441 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1442 if (use_temp_file)
1443 ff_rename(temp_filename, hls->master_m3u8_url, s);
1444
1445 return ret;
1446 }
1447
1448 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1449 {
1450 HLSContext *hls = s->priv_data;
1451 HLSSegment *en;
1452 int target_duration = 0;
1453 int ret = 0;
1454 char temp_filename[MAX_URL_SIZE];
1455 char temp_vtt_filename[MAX_URL_SIZE];
1456 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1457 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1458 int is_file_proto = proto && !strcmp(proto, "file");
1459 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1460 static unsigned warned_non_file;
1461 char *key_uri = NULL;
1462 char *iv_string = NULL;
1463 AVDictionary *options = NULL;
1464 double prog_date_time = vs->initial_prog_date_time;
1465 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1466 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1467
1468 hls->version = 3;
1469 if (byterange_mode) {
1470 hls->version = 4;
1471 sequence = 0;
1472 }
1473
1474 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1475 hls->version = 6;
1476 }
1477
1478 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1479 hls->version = 7;
1480 }
1481
1482 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1483 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1484
1485 set_http_options(s, &options, hls);
1486 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1487 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1488 if (hls->ignore_io_errors)
1489 ret = 0;
1490 goto fail;
1491 }
1492
1493 for (en = vs->segments; en; en = en->next) {
1494 if (target_duration <= en->duration)
1495 target_duration = lrint(en->duration);
1496 }
1497
1498 vs->discontinuity_set = 0;
1499 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1500 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1501
1502 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1503 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1504 vs->discontinuity_set = 1;
1505 }
1506 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1507 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1508 }
1509 for (en = vs->segments; en; en = en->next) {
1510 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1511 av_strcasecmp(en->iv_string, iv_string))) {
1512 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1513 if (*en->iv_string)
1514 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1515 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1516 key_uri = en->key_uri;
1517 iv_string = en->iv_string;
1518 }
1519
1520 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1521 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1522 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1523 }
1524
1525 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1526 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1527 en->size, en->pos, hls->baseurl,
1528 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1529 if (ret < 0) {
1530 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1531 }
1532 }
1533
1534 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1535 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1536
1537 if (vs->vtt_m3u8_name) {
1538 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1539 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1540 if (hls->ignore_io_errors)
1541 ret = 0;
1542 goto fail;
1543 }
1544 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1545 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1546 for (en = vs->segments; en; en = en->next) {
1547 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1548 en->duration, 0, en->size, en->pos,
1549 hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1550 if (ret < 0) {
1551 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1552 }
1553 }
1554
1555 if (last)
1556 ff_hls_write_end_list(hls->sub_m3u8_out);
1557
1558 }
1559
1560 fail:
1561 av_dict_free(&options);
1562 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1563 if (ret < 0) {
1564 return ret;
1565 }
1566 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1567 if (use_temp_file) {
1568 ff_rename(temp_filename, vs->m3u8_name, s);
1569 if (vs->vtt_m3u8_name)
1570 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1571 }
1572 if (ret >= 0 && hls->master_pl_name)
1573 if (create_master_playlist(s, vs) < 0)
1574 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1575
1576 return ret;
1577 }
1578
1579 static int hls_start(AVFormatContext *s, VariantStream *vs)
1580 {
1581 HLSContext *c = s->priv_data;
1582 AVFormatContext *oc = vs->avf;
1583 AVFormatContext *vtt_oc = vs->vtt_avf;
1584 AVDictionary *options = NULL;
1585 const char *proto = NULL;
1586 int use_temp_file = 0;
1587 char iv_string[KEYSIZE*2 + 1];
1588 int err = 0;
1589
1590 if (c->flags & HLS_SINGLE_FILE) {
1591 char *new_name = av_strdup(vs->basename);
1592 if (!new_name)
1593 return AVERROR(ENOMEM);
1594 ff_format_set_url(oc, new_name);
1595 if (vs->vtt_basename) {
1596 new_name = av_strdup(vs->vtt_basename);
1597 if (!new_name)
1598 return AVERROR(ENOMEM);
1599 ff_format_set_url(vtt_oc, new_name);
1600 }
1601 } else if (c->max_seg_size > 0) {
1602 char *filename = NULL;
1603 if (replace_int_data_in_filename(&filename,
1604 #if FF_API_HLS_WRAP
1605 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1606 #else
1607 vs->basename, 'd', vs->sequence) < 1) {
1608 #endif
1609 av_freep(&filename);
1610 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1611 return AVERROR(EINVAL);
1612 }
1613 ff_format_set_url(oc, filename);
1614 } else {
1615 if (c->use_localtime) {
1616 time_t now0;
1617 struct tm *tm, tmpbuf;
1618 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1619 char *buf = av_mallocz(bufsize);
1620 if (!buf)
1621 return AVERROR(ENOMEM);
1622 time(&now0);
1623 tm = localtime_r(&now0, &tmpbuf);
1624 ff_format_set_url(oc, buf);
1625 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1626 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1627 return AVERROR(EINVAL);
1628 }
1629
1630 err = sls_flag_use_localtime_filename(oc, c, vs);
1631 if (err < 0) {
1632 return AVERROR(ENOMEM);
1633 }
1634
1635 if (c->use_localtime_mkdir) {
1636 const char *dir;
1637 char *fn_copy = av_strdup(oc->url);
1638 if (!fn_copy)
1639 return AVERROR(ENOMEM);
1640 dir = av_dirname(fn_copy);
1641 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1642 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1643 av_freep(&fn_copy);
1644 return AVERROR(errno);
1645 }
1646 av_freep(&fn_copy);
1647 }
1648 } else {
1649 char *filename = NULL;
1650 if (replace_int_data_in_filename(&filename,
1651 #if FF_API_HLS_WRAP
1652 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1653 #else
1654 vs->basename, 'd', vs->sequence) < 1) {
1655 #endif
1656 av_freep(&filename);
1657 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1658 return AVERROR(EINVAL);
1659 }
1660 ff_format_set_url(oc, filename);
1661 }
1662 if (vs->vtt_basename) {
1663 char *filename = NULL;
1664 if (replace_int_data_in_filename(&filename,
1665 #if FF_API_HLS_WRAP
1666 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1667 #else
1668 vs->vtt_basename, 'd', vs->sequence) < 1) {
1669 #endif
1670 av_freep(&filename);
1671 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1672 return AVERROR(EINVAL);
1673 }
1674 ff_format_set_url(vtt_oc, filename);
1675 }
1676 }
1677
1678 proto = avio_find_protocol_name(oc->url);
1679 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1680
1681 if (use_temp_file) {
1682 char *new_name = av_asprintf("%s.tmp", oc->url);
1683 if (!new_name)
1684 return AVERROR(ENOMEM);
1685 ff_format_set_url(oc, new_name);
1686 }
1687
1688 if (c->key_info_file || c->encrypt) {
1689 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1690 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1691 return AVERROR_PATCHWELCOME;
1692 }
1693
1694 if (c->key_info_file && c->encrypt) {
1695 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1696 " ignoring -hls_enc\n");
1697 }
1698
1699 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1700 if (c->key_info_file) {
1701 if ((err = hls_encryption_start(s, vs)) < 0)
1702 goto fail;
1703 } else {
1704 if (!c->encrypt_started) {
1705 if ((err = do_encrypt(s, vs)) < 0)
1706 goto fail;
1707 c->encrypt_started = 1;
1708 }
1709 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1710 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1711 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1712 }
1713 vs->encrypt_started = 1;
1714 }
1715 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1716 if (!err) {
1717 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1718 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1719 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1720 }
1721 }
1722 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1723 if (oc->oformat->priv_class && oc->priv_data) {
1724 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1725 }
1726 if (c->flags & HLS_SINGLE_FILE) {
1727 set_http_options(s, &options, c);
1728 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1729 if (c->ignore_io_errors)
1730 err = 0;
1731 goto fail;
1732 }
1733 }
1734 }
1735 if (vs->vtt_basename) {
1736 set_http_options(s, &options, c);
1737 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1738 if (c->ignore_io_errors)
1739 err = 0;
1740 goto fail;
1741 }
1742 }
1743 av_dict_free(&options);
1744
1745 if (vs->vtt_basename) {
1746 err = avformat_write_header(vtt_oc,NULL);
1747 if (err < 0)
1748 return err;
1749 }
1750
1751 return 0;
1752 fail:
1753 av_dict_free(&options);
1754
1755 return err;
1756 }
1757
1758 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1759 {
1760 char b[21];
1761 time_t t = time(NULL);
1762 struct tm *p, tmbuf;
1763 HLSContext *hls = s->priv_data;
1764
1765 p = localtime_r(&t, &tmbuf);
1766 // no %s support when strftime returned error or left format string unchanged
1767 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1768 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1769 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1770 }
1771 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1772 }
1773
1774 static int append_postfix(char *name, int name_buf_len, int i)
1775 {
1776 char *p;
1777 char extension[10] = {'\0'};
1778
1779 p = strrchr(name, '.');
1780 if (p) {
1781 av_strlcpy(extension, p, sizeof(extension));
1782 *p = '\0';
1783 }
1784
1785 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1786
1787 if (strlen(extension))
1788 av_strlcat(name, extension, name_buf_len);
1789
1790 return 0;
1791 }
1792
1793 static int validate_name(int nb_vs, const char *fn)
1794 {
1795 const char *filename, *subdir_name;
1796 char *fn_dup = NULL;
1797 int ret = 0;
1798
1799 if (!fn)
1800 return AVERROR(EINVAL);
1801
1802 fn_dup = av_strdup(fn);
1803 if (!fn_dup)
1804 return AVERROR(ENOMEM);
1805 filename = av_basename(fn);
1806 subdir_name = av_dirname(fn_dup);
1807
1808 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1809 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1810 "either in the filename or in the sub-directory name of file %s\n", fn);
1811 ret = AVERROR(EINVAL);
1812 goto fail;
1813 }
1814
1815 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1816 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1817 "in the sub-directory name of file %s, but only in one of them\n", fn);
1818 ret = AVERROR(EINVAL);
1819 goto fail;
1820 }
1821
1822 fail:
1823 av_freep(&fn_dup);
1824 return ret;
1825 }
1826
1827 static int format_name(const char *buf, char **s, int index, const char *varname)
1828 {
1829 const char *proto, *dir;
1830 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1831 int ret = 0;
1832
1833 orig_buf_dup = av_strdup(buf);
1834 if (!orig_buf_dup)
1835 return AVERROR(ENOMEM);
1836
1837 if (!av_stristr(buf, "%v")) {
1838 *s = orig_buf_dup;
1839 return 0;
1840 }
1841
1842 if (!varname) {
1843 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1844 ret = AVERROR(EINVAL);
1845 goto fail;
1846 }
1847 } else {
1848 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1849 ret = AVERROR(EINVAL);
1850 goto fail;
1851 }
1852 }
1853
1854 proto = avio_find_protocol_name(orig_buf_dup);
1855 dir = av_dirname(orig_buf_dup);
1856
1857 /* if %v is present in the file's directory, create sub-directory */
1858 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1859 mod_buf_dup = av_strdup(*s);
1860 dir = av_dirname(mod_buf_dup);
1861 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1862 ret = AVERROR(errno);
1863 goto fail;
1864 }
1865 }
1866
1867 fail:
1868 av_freep(&orig_buf_dup);
1869 av_freep(&mod_buf_dup);
1870 return ret;
1871 }
1872
1873 static int get_nth_codec_stream_index(AVFormatContext *s,
1874 enum AVMediaType codec_type,
1875 int64_t stream_id)
1876 {
1877 unsigned int stream_index, cnt;
1878 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1879 return -1;
1880 cnt = 0;
1881 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1882 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1883 continue;
1884 if (cnt == stream_id)
1885 return stream_index;
1886 cnt++;
1887 }
1888 return -1;
1889 }
1890
1891 static int parse_variant_stream_mapstring(AVFormatContext *s)
1892 {
1893 HLSContext *hls = s->priv_data;
1894 VariantStream *vs;
1895 int stream_index, i, j;
1896 enum AVMediaType codec_type;
1897 int nb_varstreams = 0, nb_streams;
1898 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1899 const char *val;
1900
1901 /**
1902 * Expected format for var_stream_map string is as below:
1903 * "a:0,v:0 a:1,v:1"
1904 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1905 * This string specifies how to group the audio, video and subtitle streams
1906 * into different variant streams. The variant stream groups are separated
1907 * by space.
1908 *
1909 * a:, v:, s: are keys to specify audio, video and subtitle streams
1910 * respectively. Allowed values are 0 to 9 digits (limited just based on
1911 * practical usage)
1912 *
1913 * agroup: is key to specify audio group. A string can be given as value.
1914 * sgroup: is key to specify subtitle group. A string can be given as value.
1915 */
1916 p = av_strdup(hls->var_stream_map);
1917 if (!p)
1918 return AVERROR(ENOMEM);
1919
1920 q = p;
1921 while (av_strtok(q, " \t", &saveptr1)) {
1922 q = NULL;
1923 nb_varstreams++;
1924 }
1925 av_freep(&p);
1926
1927 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1928 if (!hls->var_streams)
1929 return AVERROR(ENOMEM);
1930 hls->nb_varstreams = nb_varstreams;
1931
1932 p = hls->var_stream_map;
1933 nb_varstreams = 0;
1934 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1935 p = NULL;
1936
1937 if (nb_varstreams < hls->nb_varstreams) {
1938 vs = &(hls->var_streams[nb_varstreams]);
1939 vs->var_stream_idx = nb_varstreams;
1940 vs->is_default = 0;
1941 nb_varstreams++;
1942 } else
1943 return AVERROR(EINVAL);
1944
1945 q = varstr;
1946 while (1) {
1947 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1948 !av_strncasecmp(q, "s:", 2))
1949 vs->nb_streams++;
1950 q = strchr(q, ',');
1951 if (!q)
1952 break;
1953 q++;
1954 }
1955 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1956 if (!vs->streams)
1957 return AVERROR(ENOMEM);
1958
1959 nb_streams = 0;
1960 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1961 int64_t num;
1962 char *end;
1963 varstr = NULL;
1964 if (av_strstart(keyval, "language:", &val)) {
1965 vs->language = val;
1966 continue;
1967 } else if (av_strstart(keyval, "default:", &val)) {
1968 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1969 (!av_strncasecmp(val, "1", strlen("1"))));
1970 hls->has_default_key = 1;
1971 continue;
1972 } else if (av_strstart(keyval, "name:", &val)) {
1973 vs->varname = val;
1974 continue;
1975 } else if (av_strstart(keyval, "agroup:", &val)) {
1976 vs->agroup = val;
1977 continue;
1978 } else if (av_strstart(keyval, "sgroup:", &val)) {
1979 vs->sgroup = val;
1980 continue;
1981 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1982 vs->ccgroup = val;
1983 continue;
1984 } else if (av_strstart(keyval, "v:", &val)) {
1985 codec_type = AVMEDIA_TYPE_VIDEO;
1986 hls->has_video_m3u8 = 1;
1987 } else if (av_strstart(keyval, "a:", &val)) {
1988 codec_type = AVMEDIA_TYPE_AUDIO;
1989 } else if (av_strstart(keyval, "s:", &val)) {
1990 codec_type = AVMEDIA_TYPE_SUBTITLE;
1991 } else {
1992 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1993 return AVERROR(EINVAL);
1994 }
1995
1996 num = strtoll(val, &end, 10);
1997 if (!av_isdigit(*val) || *end != '\0') {
1998 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
1999 return AVERROR(EINVAL);
2000 }
2001 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2002
2003 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2004 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2005 if (vs->streams[i] == s->streams[stream_index]) {
2006 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2007 "variant definition #%d\n", nb_varstreams - 1);
2008 return AVERROR(EINVAL);
2009 }
2010 }
2011 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2012 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2013 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2014 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2015 "in two different variant definitions #%d and #%d\n",
2016 j, nb_varstreams - 1);
2017 return AVERROR(EINVAL);
2018 }
2019 }
2020 }
2021 vs->streams[nb_streams++] = s->streams[stream_index];
2022 } else {
2023 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2024 return AVERROR(EINVAL);
2025 }
2026 }
2027 }
2028 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2029 hls->nb_varstreams);
2030
2031 return 0;
2032 }
2033
2034 static int parse_cc_stream_mapstring(AVFormatContext *s)
2035 {
2036 HLSContext *hls = s->priv_data;
2037 int nb_ccstreams = 0;
2038 char *p, *q, *ccstr, *keyval;
2039 char *saveptr1 = NULL, *saveptr2 = NULL;
2040 const char *val;
2041 ClosedCaptionsStream *ccs;
2042
2043 p = av_strdup(hls->cc_stream_map);
2044 if(!p)
2045 return AVERROR(ENOMEM);
2046
2047 q = p;
2048 while (av_strtok(q, " \t", &saveptr1)) {
2049 q = NULL;
2050 nb_ccstreams++;
2051 }
2052 av_freep(&p);
2053
2054 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2055 if (!hls->cc_streams)
2056 return AVERROR(ENOMEM);
2057 hls->nb_ccstreams = nb_ccstreams;
2058
2059 p = hls->cc_stream_map;
2060 nb_ccstreams = 0;
2061 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2062 p = NULL;
2063
2064 if (nb_ccstreams < hls->nb_ccstreams)
2065 ccs = &(hls->cc_streams[nb_ccstreams++]);
2066 else
2067 return AVERROR(EINVAL);
2068
2069 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2070 ccstr = NULL;
2071
2072 if (av_strstart(keyval, "ccgroup:", &val)) {
2073 ccs->ccgroup = val;
2074 } else if (av_strstart(keyval, "instreamid:", &val)) {
2075 ccs->instreamid = val;
2076 } else if (av_strstart(keyval, "language:", &val)) {
2077 ccs->language = val;
2078 } else {
2079 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2080 return AVERROR(EINVAL);
2081 }
2082 }
2083
2084 if (!ccs->ccgroup || !ccs->instreamid) {
2085 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2086 return AVERROR(EINVAL);
2087 }
2088
2089 if (av_strstart(ccs->instreamid, "CC", &val)) {
2090 if (atoi(val) < 1 || atoi(val) > 4) {
2091 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2092 atoi(val), ccs->instreamid);
2093 return AVERROR(EINVAL);
2094 }
2095 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2096 if (atoi(val) < 1 || atoi(val) > 63) {
2097 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2098 atoi(val), ccs->instreamid);
2099 return AVERROR(EINVAL);
2100 }
2101 } else {
2102 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2103 ccs->instreamid);
2104 return AVERROR(EINVAL);
2105 }
2106 }
2107
2108 return 0;
2109 }
2110
2111 static int update_variant_stream_info(AVFormatContext *s)
2112 {
2113 HLSContext *hls = s->priv_data;
2114 unsigned int i;
2115 int ret = 0;
2116
2117 if (hls->cc_stream_map) {
2118 ret = parse_cc_stream_mapstring(s);
2119 if (ret < 0)
2120 return ret;
2121 }
2122
2123 if (hls->var_stream_map) {
2124 return parse_variant_stream_mapstring(s);
2125 } else {
2126 //By default, a single variant stream with all the codec streams is created
2127 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2128 if (!hls->var_streams)
2129 return AVERROR(ENOMEM);
2130 hls->nb_varstreams = 1;
2131
2132 hls->var_streams[0].var_stream_idx = 0;
2133 hls->var_streams[0].nb_streams = s->nb_streams;
2134 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2135 hls->var_streams[0].nb_streams);
2136 if (!hls->var_streams[0].streams)
2137 return AVERROR(ENOMEM);
2138
2139 //by default, the first available ccgroup is mapped to the variant stream
2140 if (hls->nb_ccstreams)
2141 hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2142
2143 for (i = 0; i < s->nb_streams; i++)
2144 hls->var_streams[0].streams[i] = s->streams[i];
2145 }
2146 return 0;
2147 }
2148
2149 static int update_master_pl_info(AVFormatContext *s)
2150 {
2151 HLSContext *hls = s->priv_data;
2152 const char *dir;
2153 char *fn1= NULL, *fn2 = NULL;
2154 int ret = 0;
2155
2156 fn1 = av_strdup(s->url);
2157 if (!fn1)
2158 return AVERROR(ENOMEM);
2159 dir = av_dirname(fn1);
2160
2161 /**
2162 * if output file's directory has %v, variants are created in sub-directories
2163 * then master is created at the sub-directories level
2164 */
2165 if (dir && av_stristr(av_basename(dir), "%v")) {
2166 fn2 = av_strdup(dir);
2167 if (!fn2) {
2168 ret = AVERROR(ENOMEM);
2169 goto fail;
2170 }
2171 dir = av_dirname(fn2);
2172 }
2173
2174 if (dir && strcmp(dir, "."))
2175 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2176 else
2177 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2178
2179 if (!hls->master_m3u8_url) {
2180 ret = AVERROR(ENOMEM);
2181 goto fail;
2182 }
2183
2184 fail:
2185 av_freep(&fn1);
2186 av_freep(&fn2);
2187
2188 return ret;
2189 }
2190
2191 static int hls_write_header(AVFormatContext *s)
2192 {
2193 HLSContext *hls = s->priv_data;
2194 int ret, i, j;
2195 VariantStream *vs = NULL;
2196
2197 for (i = 0; i < hls->nb_varstreams; i++) {
2198 vs = &hls->var_streams[i];
2199
2200 ret = avformat_write_header(vs->avf, NULL);
2201 if (ret < 0)
2202 return ret;
2203 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2204 for (j = 0; j < vs->nb_streams; j++) {
2205 AVStream *inner_st;
2206 AVStream *outer_st = vs->streams[j];
2207
2208 if (hls->max_seg_size > 0) {
2209 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2210 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2211 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2212 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2213 outer_st->codecpar->bit_rate, hls->max_seg_size);
2214 }
2215 }
2216
2217 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2218 inner_st = vs->avf->streams[j];
2219 else if (vs->vtt_avf)
2220 inner_st = vs->vtt_avf->streams[0];
2221 else {
2222 /* We have a subtitle stream, when the user does not want one */
2223 inner_st = NULL;
2224 continue;
2225 }
2226 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2227 write_codec_attr(outer_st, vs);
2228
2229 }
2230 /* Update the Codec Attr string for the mapped audio groups */
2231 if (vs->has_video && vs->agroup) {
2232 for (j = 0; j < hls->nb_varstreams; j++) {
2233 VariantStream *vs_agroup = &(hls->var_streams[j]);
2234 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2235 vs_agroup->agroup &&
2236 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2237 write_codec_attr(vs_agroup->streams[0], vs);
2238 }
2239 }
2240 }
2241 }
2242
2243 return ret;
2244 }
2245
2246 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2247 {
2248 HLSContext *hls = s->priv_data;
2249 AVDictionary *options = NULL;
2250 int ret = 0;
2251
2252 set_http_options(s, &options, hls);
2253 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2254 av_dict_free(&options);
2255 if (ret < 0)
2256 return ret;
2257 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2258 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2259
2260 return ret;
2261 }
2262
2263 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2264 {
2265 HLSContext *hls = s->priv_data;
2266 AVFormatContext *oc = NULL;
2267 AVStream *st = s->streams[pkt->stream_index];
2268 int64_t end_pts = 0;
2269 int is_ref_pkt = 1;
2270 int ret = 0, can_split = 1, i, j;
2271 int stream_index = 0;
2272 int range_length = 0;
2273 const char *proto = NULL;
2274 int use_temp_file = 0;
2275 VariantStream *vs = NULL;
2276 char *old_filename = NULL;
2277
2278 for (i = 0; i < hls->nb_varstreams; i++) {
2279 vs = &hls->var_streams[i];
2280 for (j = 0; j < vs->nb_streams; j++) {
2281 if (vs->streams[j] == st) {
2282 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2283 oc = vs->vtt_avf;
2284 stream_index = 0;
2285 } else {
2286 oc = vs->avf;
2287 stream_index = j;
2288 }
2289 break;
2290 }
2291 }
2292
2293 if (oc)
2294 break;
2295 }
2296
2297 if (!oc) {
2298 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2299 return AVERROR(ENOMEM);
2300 }
2301
2302 end_pts = hls->recording_time * vs->number;
2303
2304 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2305 /* reset end_pts, hls->recording_time at end of the init hls list */
2306 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2307 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * (hls->time * AV_TIME_BASE);
2308 hls->recording_time = hls->time * AV_TIME_BASE;
2309 end_pts = init_list_dur + after_init_list_dur ;
2310 }
2311
2312 if (vs->start_pts == AV_NOPTS_VALUE) {
2313 vs->start_pts = pkt->pts;
2314 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2315 vs->start_pts_from_audio = 1;
2316 }
2317 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2318 vs->start_pts = pkt->pts;
2319 vs->start_pts_from_audio = 0;
2320 }
2321
2322 if (vs->has_video) {
2323 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2324 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2325 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2326 }
2327 if (pkt->pts == AV_NOPTS_VALUE)
2328 is_ref_pkt = can_split = 0;
2329
2330 if (is_ref_pkt) {
2331 if (vs->end_pts == AV_NOPTS_VALUE)
2332 vs->end_pts = pkt->pts;
2333 if (vs->new_start) {
2334 vs->new_start = 0;
2335 vs->duration = (double)(pkt->pts - vs->end_pts)
2336 * st->time_base.num / st->time_base.den;
2337 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2338 } else {
2339 if (pkt->duration) {
2340 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2341 } else {
2342 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2343 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2344 }
2345 }
2346
2347 }
2348
2349 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2350 end_pts, AV_TIME_BASE_Q) >= 0) {
2351 int64_t new_start_pos;
2352 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2353
2354 av_write_frame(oc, NULL); /* Flush any buffered data */
2355 new_start_pos = avio_tell(oc->pb);
2356 vs->size = new_start_pos - vs->start_pos;
2357 avio_flush(oc->pb);
2358 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2359 if (!vs->init_range_length) {
2360 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2361 if (range_length <= 0)
2362 return AVERROR(EINVAL);
2363 avio_write(vs->out, vs->init_buffer, range_length);
2364 if (!hls->resend_init_file)
2365 av_freep(&vs->init_buffer);
2366 vs->init_range_length = range_length;
2367 avio_open_dyn_buf(&oc->pb);
2368 vs->packets_written = 0;
2369 vs->start_pos = range_length;
2370 if (!byterange_mode) {
2371 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2372 }
2373 }
2374 }
2375 if (!byterange_mode) {
2376 if (vs->vtt_avf) {
2377 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2378 }
2379 }
2380
2381 if (hls->flags & HLS_SINGLE_FILE) {
2382 ret = flush_dynbuf(vs, &range_length);
2383 av_freep(&vs->temp_buffer);
2384 if (ret < 0) {
2385 return ret;
2386 }
2387 vs->size = range_length;
2388 } else {
2389 if (oc->url[0]) {
2390 proto = avio_find_protocol_name(oc->url);
2391 use_temp_file = proto && !strcmp(proto, "file")
2392 && (hls->flags & HLS_TEMP_FILE);
2393 }
2394
2395 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2396 AVDictionary *options = NULL;
2397 char *filename = NULL;
2398 if (hls->key_info_file || hls->encrypt) {
2399 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2400 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2401 filename = av_asprintf("crypto:%s", oc->url);
2402 } else {
2403 filename = av_asprintf("%s", oc->url);
2404 }
2405 if (!filename) {
2406 av_dict_free(&options);
2407 return AVERROR(ENOMEM);
2408 }
2409
2410 // look to rename the asset name
2411 if (use_temp_file)
2412 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2413
2414 set_http_options(s, &options, hls);
2415
2416 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2417 if (ret < 0) {
2418 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2419 "Failed to open file '%s'\n", filename);
2420 av_freep(&filename);
2421 av_dict_free(&options);
2422 return hls->ignore_io_errors ? 0 : ret;
2423 }
2424 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2425 write_styp(vs->out);
2426 }
2427 ret = flush_dynbuf(vs, &range_length);
2428 if (ret < 0) {
2429 av_freep(&filename);
2430 av_dict_free(&options);
2431 return ret;
2432 }
2433 ret = hlsenc_io_close(s, &vs->out, filename);
2434 if (ret < 0) {
2435 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2436 " will retry with a new http session.\n");
2437 ff_format_io_close(s, &vs->out);
2438 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2439 reflush_dynbuf(vs, &range_length);
2440 ret = hlsenc_io_close(s, &vs->out, filename);
2441 }
2442 av_dict_free(&options);
2443 av_freep(&vs->temp_buffer);
2444 av_freep(&filename);
2445 }
2446
2447 if (use_temp_file)
2448 hls_rename_temp_file(s, oc);
2449 }
2450
2451 old_filename = av_strdup(oc->url);
2452 if (!old_filename) {
2453 return AVERROR(ENOMEM);
2454 }
2455
2456 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2457 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2458 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2459 vs->end_pts = pkt->pts;
2460 vs->duration = 0;
2461 if (ret < 0) {
2462 av_freep(&old_filename);
2463 return ret;
2464 }
2465 }
2466
2467 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2468 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2469 if ((ret = hls_window(s, 0, vs)) < 0) {
2470 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2471 ff_format_io_close(s, &vs->out);
2472 if ((ret = hls_window(s, 0, vs)) < 0) {
2473 av_freep(&old_filename);
2474 return ret;
2475 }
2476 }
2477 }
2478
2479 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2480 ret = hls_init_file_resend(s, vs);
2481 if (ret < 0) {
2482 av_freep(&old_filename);
2483 return ret;
2484 }
2485 }
2486
2487 if (hls->flags & HLS_SINGLE_FILE) {
2488 vs->start_pos += vs->size;
2489 } else if (hls->max_seg_size > 0) {
2490 vs->start_pos = new_start_pos;
2491 if (vs->size >= hls->max_seg_size) {
2492 vs->sequence++;
2493 sls_flag_file_rename(hls, vs, old_filename);
2494 ret = hls_start(s, vs);
2495 vs->start_pos = 0;
2496 /* When split segment by byte, the duration is short than hls_time,
2497 * so it is not enough one segment duration as hls_time, */
2498 }
2499 } else {
2500 vs->start_pos = new_start_pos;
2501 sls_flag_file_rename(hls, vs, old_filename);
2502 ret = hls_start(s, vs);
2503 }
2504 vs->number++;
2505 av_freep(&old_filename);
2506
2507 if (ret < 0) {
2508 return ret;
2509 }
2510
2511 }
2512
2513 vs->packets_written++;
2514 if (oc->pb) {
2515 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2516 vs->video_keyframe_size += pkt->size;
2517 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2518 vs->video_keyframe_size = avio_tell(oc->pb);
2519 } else {
2520 vs->video_keyframe_pos = avio_tell(vs->out);
2521 }
2522 if (hls->ignore_io_errors)
2523 ret = 0;
2524 }
2525
2526 return ret;
2527 }
2528
2529 static void hls_deinit(AVFormatContext *s)
2530 {
2531 HLSContext *hls = s->priv_data;
2532 int i = 0;
2533 VariantStream *vs = NULL;
2534
2535 for (i = 0; i < hls->nb_varstreams; i++) {
2536 vs = &hls->var_streams[i];
2537
2538 av_freep(&vs->basename);
2539 av_freep(&vs->base_output_dirname);
2540 av_freep(&vs->fmp4_init_filename);
2541 av_freep(&vs->vtt_basename);
2542 av_freep(&vs->vtt_m3u8_name);
2543
2544 avformat_free_context(vs->vtt_avf);
2545 avformat_free_context(vs->avf);
2546 if (hls->resend_init_file)
2547 av_freep(&vs->init_buffer);
2548 hls_free_segments(vs->segments);
2549 hls_free_segments(vs->old_segments);
2550 av_freep(&vs->m3u8_name);
2551 av_freep(&vs->streams);
2552 }
2553
2554 ff_format_io_close(s, &hls->m3u8_out);
2555 ff_format_io_close(s, &hls->sub_m3u8_out);
2556 av_freep(&hls->key_basename);
2557 av_freep(&hls->var_streams);
2558 av_freep(&hls->cc_streams);
2559 av_freep(&hls->master_m3u8_url);
2560 }
2561
2562 static int hls_write_trailer(struct AVFormatContext *s)
2563 {
2564 HLSContext *hls = s->priv_data;
2565 AVFormatContext *oc = NULL;
2566 AVFormatContext *vtt_oc = NULL;
2567 char *old_filename = NULL;
2568 const char *proto = NULL;
2569 int use_temp_file = 0;
2570 int i;
2571 int ret = 0;
2572 VariantStream *vs = NULL;
2573 AVDictionary *options = NULL;
2574 int range_length, byterange_mode;
2575
2576 for (i = 0; i < hls->nb_varstreams; i++) {
2577 char *filename = NULL;
2578 vs = &hls->var_streams[i];
2579 oc = vs->avf;
2580 vtt_oc = vs->vtt_avf;
2581 old_filename = av_strdup(oc->url);
2582 use_temp_file = 0;
2583
2584 if (!old_filename) {
2585 return AVERROR(ENOMEM);
2586 }
2587 if (hls->key_info_file || hls->encrypt) {
2588 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2589 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2590 filename = av_asprintf("crypto:%s", oc->url);
2591 } else {
2592 filename = av_asprintf("%s", oc->url);
2593 }
2594 if (!filename) {
2595 av_freep(&old_filename);
2596 return AVERROR(ENOMEM);
2597 }
2598
2599 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2600 int range_length = 0;
2601 if (!vs->init_range_length) {
2602 uint8_t *buffer = NULL;
2603 av_write_frame(oc, NULL); /* Flush any buffered data */
2604
2605 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2606 avio_write(vs->out, buffer, range_length);
2607 av_freep(&buffer);
2608 vs->init_range_length = range_length;
2609 avio_open_dyn_buf(&oc->pb);
2610 vs->packets_written = 0;
2611 vs->start_pos = range_length;
2612 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2613 if (!byterange_mode) {
2614 ff_format_io_close(s, &vs->out);
2615 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2616 }
2617 }
2618 }
2619 if (!(hls->flags & HLS_SINGLE_FILE)) {
2620 set_http_options(s, &options, hls);
2621 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2622 if (ret < 0) {
2623 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2624 goto failed;
2625 }
2626 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2627 write_styp(vs->out);
2628 }
2629 ret = flush_dynbuf(vs, &range_length);
2630 if (ret < 0)
2631 goto failed;
2632
2633 vs->size = range_length;
2634 hlsenc_io_close(s, &vs->out, filename);
2635 ret = hlsenc_io_close(s, &vs->out, filename);
2636 if (ret < 0) {
2637 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2638 ff_format_io_close(s, &vs->out);
2639 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2640 if (ret < 0) {
2641 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2642 goto failed;
2643 }
2644 reflush_dynbuf(vs, &range_length);
2645 ret = hlsenc_io_close(s, &vs->out, filename);
2646 if (ret < 0)
2647 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2648 }
2649
2650 failed:
2651 av_freep(&vs->temp_buffer);
2652 av_dict_free(&options);
2653 av_freep(&filename);
2654 av_write_trailer(oc);
2655 if (oc->url[0]) {
2656 proto = avio_find_protocol_name(oc->url);
2657 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2658 }
2659
2660 // rename that segment from .tmp to the real one
2661 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2662 hls_rename_temp_file(s, oc);
2663 av_freep(&old_filename);
2664 old_filename = av_strdup(oc->url);
2665
2666 if (!old_filename) {
2667 return AVERROR(ENOMEM);
2668 }
2669 }
2670
2671 /* after av_write_trailer, then duration + 1 duration per packet */
2672 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2673
2674 sls_flag_file_rename(hls, vs, old_filename);
2675
2676 if (vtt_oc) {
2677 if (vtt_oc->pb)
2678 av_write_trailer(vtt_oc);
2679 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2680 ff_format_io_close(s, &vtt_oc->pb);
2681 }
2682 ret = hls_window(s, 1, vs);
2683 if (ret < 0) {
2684 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2685 ff_format_io_close(s, &vs->out);
2686 hls_window(s, 1, vs);
2687 }
2688 ffio_free_dyn_buf(&oc->pb);
2689
2690 av_free(old_filename);
2691 }
2692
2693 return 0;
2694 }
2695
2696
2697 static int hls_init(AVFormatContext *s)
2698 {
2699 int ret = 0;
2700 int i = 0;
2701 int j = 0;
2702 HLSContext *hls = s->priv_data;
2703 const char *pattern;
2704 VariantStream *vs = NULL;
2705 const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2706 char *p = NULL;
2707 int http_base_proto = ff_is_http_proto(s->url);
2708 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2709
2710 if (hls->use_localtime) {
2711 pattern = get_default_pattern_localtime_fmt(s);
2712 } else {
2713 pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2714 if (hls->flags & HLS_SINGLE_FILE)
2715 pattern += 2;
2716 }
2717
2718 hls->has_default_key = 0;
2719 hls->has_video_m3u8 = 0;
2720 ret = update_variant_stream_info(s);
2721 if (ret < 0) {
2722 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2723 ret);
2724 return ret;
2725 }
2726
2727 if (!hls->method && http_base_proto) {
2728 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2729 }
2730
2731 ret = validate_name(hls->nb_varstreams, s->url);
2732 if (ret < 0)
2733 return ret;
2734
2735 if (hls->segment_filename) {
2736 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2737 if (ret < 0)
2738 return ret;
2739 }
2740
2741 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2742 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2743 if (ret < 0)
2744 return ret;
2745 }
2746
2747 if (hls->subtitle_filename) {
2748 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2749 if (ret < 0)
2750 return ret;
2751 }
2752
2753 if (hls->master_pl_name) {
2754 ret = update_master_pl_info(s);
2755 if (ret < 0) {
2756 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2757 ret);
2758 return ret;
2759 }
2760 }
2761
2762 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2763 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2764 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2765 time_t t = time(NULL);
2766 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2767 hls->start_sequence = av_gettime();
2768 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2769 hls->start_sequence = (int64_t)t;
2770 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2771 char b[15];
2772 struct tm *p, tmbuf;
2773 if (!(p = localtime_r(&t, &tmbuf)))
2774 return AVERROR(errno);
2775 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2776 return AVERROR(ENOMEM);
2777 hls->start_sequence = strtoll(b, NULL, 10);
2778 }
2779 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2780 }
2781
2782 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2783
2784 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2785 // Independent segments cannot be guaranteed when splitting by time
2786 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2787 av_log(s, AV_LOG_WARNING,
2788 "'split_by_time' and 'independent_segments' cannot be "
2789 "enabled together. Disabling 'independent_segments' flag\n");
2790 }
2791
2792 for (i = 0; i < hls->nb_varstreams; i++) {
2793 vs = &hls->var_streams[i];
2794
2795 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2796 if (ret < 0)
2797 return ret;
2798
2799 vs->sequence = hls->start_sequence;
2800 vs->start_pts = AV_NOPTS_VALUE;
2801 vs->end_pts = AV_NOPTS_VALUE;
2802 vs->current_segment_final_filename_fmt[0] = '\0';
2803
2804 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2805 time_t now0;
2806 time(&now0);
2807 vs->initial_prog_date_time = now0;
2808 }
2809
2810 for (j = 0; j < vs->nb_streams; j++) {
2811 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2812 /* Get one video stream to reference for split segments
2813 * so use the first video stream index. */
2814 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2815 vs->reference_stream_index = vs->streams[j]->index;
2816 }
2817 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2818 }
2819
2820 if (vs->has_video > 1)
2821 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2822 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2823 vs->oformat = av_guess_format("mp4", NULL, NULL);
2824 } else {
2825 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2826 }
2827 if (!vs->oformat)
2828 return AVERROR_MUXER_NOT_FOUND;
2829
2830 if (hls->segment_filename) {
2831 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2832 if (ret < 0)
2833 return ret;
2834 } else {
2835 p = strrchr(vs->m3u8_name, '.');
2836 if (p)
2837 *p = '\0';
2838
2839 vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
2840 if (!vs->basename)
2841 return AVERROR(ENOMEM);
2842
2843 if (p)
2844 *p = '.';
2845 }
2846
2847 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2848 if (hls->nb_varstreams > 1)
2849 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2850 if (hls->flags & HLS_SINGLE_FILE) {
2851 vs->fmp4_init_filename = av_strdup(vs->basename);
2852 if (!vs->fmp4_init_filename)
2853 return AVERROR(ENOMEM);
2854 } else {
2855 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2856 if (!vs->fmp4_init_filename)
2857 return AVERROR(ENOMEM);
2858 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2859 fmp4_init_filename_len);
2860 if (hls->nb_varstreams > 1) {
2861 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2862 av_freep(&vs->fmp4_init_filename);
2863 ret = format_name(hls->fmp4_init_filename,
2864 &vs->fmp4_init_filename, i, vs->varname);
2865 } else {
2866 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2867 }
2868 if (ret < 0)
2869 return ret;
2870 }
2871
2872 p = strrchr(vs->m3u8_name, '/');
2873 if (p) {
2874 char tmp = *(++p);
2875 *p = '\0';
2876 vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
2877 vs->fmp4_init_filename);
2878 *p = tmp;
2879 } else {
2880 vs->base_output_dirname = av_strdup(vs->fmp4_init_filename);
2881 }
2882 if (!vs->base_output_dirname)
2883 return AVERROR(ENOMEM);
2884 }
2885 }
2886
2887 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2888 if (ret < 0)
2889 return ret;
2890
2891 if (vs->has_subtitle) {
2892 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2893 if (!vs->vtt_oformat)
2894 return AVERROR_MUXER_NOT_FOUND;
2895
2896 p = strrchr(vs->m3u8_name, '.');
2897 if (p)
2898 *p = '\0';
2899
2900 vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
2901 if (!vs->vtt_basename)
2902 return AVERROR(ENOMEM);
2903
2904 if (hls->subtitle_filename) {
2905 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2906 if (ret < 0)
2907 return ret;
2908 } else {
2909 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
2910 if (!vs->vtt_m3u8_name)
2911 return AVERROR(ENOMEM);
2912 }
2913 if (p)
2914 *p = '.';
2915 }
2916
2917 if ((ret = hls_mux_init(s, vs)) < 0)
2918 return ret;
2919
2920 if (hls->flags & HLS_APPEND_LIST) {
2921 parse_playlist(s, vs->m3u8_name, vs);
2922 vs->discontinuity = 1;
2923 if (hls->init_time > 0) {
2924 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2925 " hls_init_time value will have no effect\n");
2926 hls->init_time = 0;
2927 hls->recording_time = hls->time * AV_TIME_BASE;
2928 }
2929 }
2930
2931 if ((ret = hls_start(s, vs)) < 0)
2932 return ret;
2933 vs->number++;
2934 }
2935
2936 return ret;
2937 }
2938
2939 #define OFFSET(x) offsetof(HLSContext, x)
2940 #define E AV_OPT_FLAG_ENCODING_PARAM
2941 static const AVOption options[] = {
2942 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2943 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2944 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2945 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2946 {"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},
2947 {"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},
2948 {"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},
2949 #if FF_API_HLS_WRAP
2950 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2951 #endif
2952 {"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},
2953 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2954 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2955 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2956 {"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},
2957 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2958 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2959 {"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},
2960 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2961 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2962 {"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"},
2963 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2964 {"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"},
2965 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2966 {"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 },
2967 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2968 {"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"},
2969 {"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"},
2970 {"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"},
2971 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2972 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2973 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2974 {"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"},
2975 {"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"},
2976 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2977 {"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"},
2978 {"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"},
2979 {"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"},
2980 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2981 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2982 {"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"},
2983 #if FF_API_HLS_USE_LOCALTIME
2984 {"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 },
2985 #endif
2986 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2987 #if FF_API_HLS_USE_LOCALTIME
2988 {"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 },
2989 #endif
2990 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2991 {"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" },
2992 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2993 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2994 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2995 {"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" },
2996 {"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" },
2997 {"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" },
2998 {"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" },
2999 {"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" },
3000 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3001 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3002 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3003 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3004 {"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},
3005 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3006 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3007 {"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 },
3008 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3009 { NULL },
3010 };
3011
3012 static const AVClass hls_class = {
3013 .class_name = "hls muxer",
3014 .item_name = av_default_item_name,
3015 .option = options,
3016 .version = LIBAVUTIL_VERSION_INT,
3017 };
3018
3019
3020 AVOutputFormat ff_hls_muxer = {
3021 .name = "hls",
3022 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3023 .extensions = "m3u8",
3024 .priv_data_size = sizeof(HLSContext),
3025 .audio_codec = AV_CODEC_ID_AAC,
3026 .video_codec = AV_CODEC_ID_H264,
3027 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3028 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3029 .init = hls_init,
3030 .write_header = hls_write_header,
3031 .write_packet = hls_write_packet,
3032 .write_trailer = hls_write_trailer,
3033 .deinit = hls_deinit,
3034 .priv_class = &hls_class,
3035 };
3036