FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/segment.c
Date: 2024-05-08 06:34:07
Exec Total Coverage
Lines: 320 565 56.6%
Functions: 13 18 72.2%
Branches: 175 415 42.2%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2011, Luca Barbato
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file generic segmenter
23 * M3U8 specification can be find here:
24 * @url{http://tools.ietf.org/id/draft-pantos-http-live-streaming}
25 */
26
27 #include "config_components.h"
28
29 #include <time.h>
30
31 #include "avformat.h"
32 #include "internal.h"
33 #include "mux.h"
34
35 #include "libavutil/avassert.h"
36 #include "libavutil/internal.h"
37 #include "libavutil/log.h"
38 #include "libavutil/mem.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/avstring.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/mathematics.h"
43 #include "libavutil/time.h"
44 #include "libavutil/timecode.h"
45 #include "libavutil/time_internal.h"
46 #include "libavutil/timestamp.h"
47
48 typedef struct SegmentListEntry {
49 int index;
50 double start_time, end_time;
51 int64_t start_pts;
52 int64_t offset_pts;
53 char *filename;
54 struct SegmentListEntry *next;
55 int64_t last_duration;
56 } SegmentListEntry;
57
58 typedef enum {
59 LIST_TYPE_UNDEFINED = -1,
60 LIST_TYPE_FLAT = 0,
61 LIST_TYPE_CSV,
62 LIST_TYPE_M3U8,
63 LIST_TYPE_EXT, ///< deprecated
64 LIST_TYPE_FFCONCAT,
65 LIST_TYPE_NB,
66 } ListType;
67
68 #define SEGMENT_LIST_FLAG_CACHE 1
69 #define SEGMENT_LIST_FLAG_LIVE 2
70
71 typedef struct SegmentContext {
72 const AVClass *class; /**< Class for private options. */
73 int segment_idx; ///< index of the segment file to write, starting from 0
74 int segment_idx_wrap; ///< number after which the index wraps
75 int segment_idx_wrap_nb; ///< number of time the index has wraped
76 int segment_count; ///< number of segment files already written
77 const AVOutputFormat *oformat;
78 AVFormatContext *avf;
79 char *format; ///< format to use for output segment files
80 AVDictionary *format_options;
81 char *list; ///< filename for the segment list file
82 int list_flags; ///< flags affecting list generation
83 int list_size; ///< number of entries for the segment list file
84
85 int is_nullctx; ///< whether avf->pb is a nullctx
86 int use_clocktime; ///< flag to cut segments at regular clock time
87 int64_t clocktime_offset; //< clock offset for cutting the segments at regular clock time
88 int64_t clocktime_wrap_duration; //< wrapping duration considered for starting a new segment
89 int64_t last_val; ///< remember last time for wrap around detection
90 int cut_pending;
91 int header_written; ///< whether we've already called avformat_write_header
92
93 char *entry_prefix; ///< prefix to add to list entry filenames
94 int list_type; ///< set the list type
95 AVIOContext *list_pb; ///< list file put-byte context
96 int64_t time; ///< segment duration
97 int64_t min_seg_duration; ///< minimum segment duration
98 int use_strftime; ///< flag to expand filename with strftime
99 int increment_tc; ///< flag to increment timecode if found
100
101 char *times_str; ///< segment times specification string
102 int64_t *times; ///< list of segment interval specification
103 int nb_times; ///< number of elments in the times array
104
105 char *frames_str; ///< segment frame numbers specification string
106 int *frames; ///< list of frame number specification
107 int nb_frames; ///< number of elments in the frames array
108 int frame_count; ///< total number of reference frames
109 int segment_frame_count; ///< number of reference frames in the segment
110
111 int64_t time_delta;
112 int individual_header_trailer; /**< Set by a private option. */
113 int write_header_trailer; /**< Set by a private option. */
114 char *header_filename; ///< filename to write the output header to
115
116 int reset_timestamps; ///< reset timestamps at the beginning of each segment
117 int64_t initial_offset; ///< initial timestamps offset, expressed in microseconds
118 char *reference_stream_specifier; ///< reference stream specifier
119 int reference_stream_index;
120 int64_t reference_stream_first_pts; ///< initial timestamp, expressed in microseconds
121 int break_non_keyframes;
122 int write_empty;
123
124 int use_rename;
125 char temp_list_filename[1024];
126
127 SegmentListEntry cur_entry;
128 SegmentListEntry *segment_list_entries;
129 SegmentListEntry *segment_list_entries_end;
130 } SegmentContext;
131
132 ✗ static void print_csv_escaped_str(AVIOContext *ctx, const char *str)
133 {
134 ✗ int needs_quoting = !!str[strcspn(str, "\",\n\r")];
135
136 ✗ if (needs_quoting)
137 ✗ avio_w8(ctx, '"');
138
139 ✗ for (; *str; str++) {
140 ✗ if (*str == '"')
141 ✗ avio_w8(ctx, '"');
142 ✗ avio_w8(ctx, *str);
143 }
144 ✗ if (needs_quoting)
145 ✗ avio_w8(ctx, '"');
146 ✗ }
147
148 13 static int segment_mux_init(AVFormatContext *s)
149 {
150 13 SegmentContext *seg = s->priv_data;
151 AVFormatContext *oc;
152 int i;
153 int ret;
154
155 13 ret = avformat_alloc_output_context2(&seg->avf, seg->oformat, NULL, NULL);
156
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 13 if (ret < 0)
157 ✗ return ret;
158 13 oc = seg->avf;
159
160 13 oc->interrupt_callback = s->interrupt_callback;
161 13 oc->max_delay = s->max_delay;
162 13 av_dict_copy(&oc->metadata, s->metadata, 0);
163 13 oc->opaque = s->opaque;
164 13 oc->io_close2 = s->io_close2;
165 13 oc->io_open = s->io_open;
166 13 oc->flags = s->flags;
167
168
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 26 for (i = 0; i < s->nb_streams; i++) {
169 13 AVStream *st, *ist = s->streams[i];
170 13 AVCodecParameters *ipar = ist->codecpar, *opar;
171
172 13 st = ff_stream_clone(oc, ist);
173
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 13 if (!st)
174 ✗ return AVERROR(ENOMEM);
175 13 opar = st->codecpar;
176
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 13 if (!oc->oformat->codec_tag ||
177
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 8 av_codec_get_id (oc->oformat->codec_tag, ipar->codec_tag) == opar->codec_id ||
178 4 av_codec_get_tag(oc->oformat->codec_tag, ipar->codec_id) <= 0) {
179 9 opar->codec_tag = ipar->codec_tag;
180 } else {
181 4 opar->codec_tag = 0;
182 }
183 }
184
185 13 return 0;
186 }
187
188 15 static int set_segment_filename(AVFormatContext *s)
189 {
190 15 SegmentContext *seg = s->priv_data;
191 15 AVFormatContext *oc = seg->avf;
192 size_t size;
193 int ret;
194 char buf[1024];
195 char *new_name;
196
197
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 15 if (seg->segment_idx_wrap)
198 ✗ seg->segment_idx %= seg->segment_idx_wrap;
199
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 15 if (seg->use_strftime) {
200 time_t now0;
201 struct tm *tm, tmpbuf;
202 ✗ time(&now0);
203 ✗ tm = localtime_r(&now0, &tmpbuf);
204 ✗ if (!strftime(buf, sizeof(buf), s->url, tm)) {
205 ✗ av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
206 ✗ return AVERROR(EINVAL);
207 }
208
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 15 } else if (av_get_frame_filename(buf, sizeof(buf),
209 15 s->url, seg->segment_idx) < 0) {
210 ✗ av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->url);
211 ✗ return AVERROR(EINVAL);
212 }
213 15 new_name = av_strdup(buf);
214
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 15 if (!new_name)
215 ✗ return AVERROR(ENOMEM);
216 15 ff_format_set_url(oc, new_name);
217
218 /* copy modified name in list entry */
219 15 size = strlen(av_basename(oc->url)) + 1;
220
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 15 if (seg->entry_prefix)
221 ✗ size += strlen(seg->entry_prefix);
222
223
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 15 if ((ret = av_reallocp(&seg->cur_entry.filename, size)) < 0)
224 ✗ return ret;
225 15 snprintf(seg->cur_entry.filename, size, "%s%s",
226
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 15 seg->entry_prefix ? seg->entry_prefix : "",
227 15 av_basename(oc->url));
228
229 15 return 0;
230 }
231
232 10 static int segment_start(AVFormatContext *s, int write_header)
233 {
234 10 SegmentContext *seg = s->priv_data;
235 10 AVFormatContext *oc = seg->avf;
236 10 int err = 0;
237
238
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 10 if (write_header) {
239 8 avformat_free_context(oc);
240 8 seg->avf = NULL;
241
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 8 if ((err = segment_mux_init(s)) < 0)
242 ✗ return err;
243 8 oc = seg->avf;
244 }
245
246 10 seg->segment_idx++;
247
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 10 if ((seg->segment_idx_wrap) && (seg->segment_idx % seg->segment_idx_wrap == 0))
248 ✗ seg->segment_idx_wrap_nb++;
249
250
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 10 if ((err = set_segment_filename(s)) < 0)
251 ✗ return err;
252
253
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 10 if ((err = s->io_open(s, &oc->pb, oc->url, AVIO_FLAG_WRITE, NULL)) < 0) {
254 ✗ av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->url);
255 ✗ return err;
256 }
257
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 10 if (!seg->individual_header_trailer)
258 2 oc->pb->seekable = 0;
259
260
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 10 if (oc->oformat->priv_class && oc->priv_data)
261 10 av_opt_set(oc->priv_data, "mpegts_flags", "+resend_headers", 0);
262
263
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 10 if (write_header) {
264 8 AVDictionary *options = NULL;
265 8 av_dict_copy(&options, seg->format_options, 0);
266 8 av_dict_set(&options, "fflags", "-autobsf", 0);
267 8 err = avformat_write_header(oc, &options);
268 8 av_dict_free(&options);
269
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 8 if (err < 0)
270 ✗ return err;
271 }
272
273 10 seg->segment_frame_count = 0;
274 10 return 0;
275 }
276
277 12 static int segment_list_open(AVFormatContext *s)
278 {
279 12 SegmentContext *seg = s->priv_data;
280 int ret;
281
282
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 12 snprintf(seg->temp_list_filename, sizeof(seg->temp_list_filename), seg->use_rename ? "%s.tmp" : "%s", seg->list);
283 12 ret = s->io_open(s, &seg->list_pb, seg->temp_list_filename, AVIO_FLAG_WRITE, NULL);
284
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 12 if (ret < 0) {
285 ✗ av_log(s, AV_LOG_ERROR, "Failed to open segment list '%s'\n", seg->list);
286 ✗ return ret;
287 }
288
289
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 24 if (seg->list_type == LIST_TYPE_M3U8 && seg->segment_list_entries) {
290 SegmentListEntry *entry;
291 12 double max_duration = 0;
292
293 12 avio_printf(seg->list_pb, "#EXTM3U\n");
294 12 avio_printf(seg->list_pb, "#EXT-X-VERSION:3\n");
295 12 avio_printf(seg->list_pb, "#EXT-X-MEDIA-SEQUENCE:%d\n", seg->segment_list_entries->index);
296 12 avio_printf(seg->list_pb, "#EXT-X-ALLOW-CACHE:%s\n",
297
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 12 seg->list_flags & SEGMENT_LIST_FLAG_CACHE ? "YES" : "NO");
298
299 12 av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%d\n",
300 12 seg->segment_list_entries->index);
301
302
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 39 for (entry = seg->segment_list_entries; entry; entry = entry->next)
303
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 27 max_duration = FFMAX(max_duration, entry->end_time - entry->start_time);
304 12 avio_printf(seg->list_pb, "#EXT-X-TARGETDURATION:%"PRId64"\n", (int64_t)ceil(max_duration));
305 ✗ } else if (seg->list_type == LIST_TYPE_FFCONCAT) {
306 ✗ avio_printf(seg->list_pb, "ffconcat version 1.0\n");
307 }
308
309 12 return ret;
310 }
311
312 27 static void segment_list_print_entry(AVIOContext *list_ioctx,
313 ListType list_type,
314 const SegmentListEntry *list_entry,
315 void *log_ctx)
316 {
317
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 27 switch (list_type) {
318 ✗ case LIST_TYPE_FLAT:
319 ✗ avio_printf(list_ioctx, "%s\n", list_entry->filename);
320 ✗ break;
321 ✗ case LIST_TYPE_CSV:
322 case LIST_TYPE_EXT:
323 ✗ print_csv_escaped_str(list_ioctx, list_entry->filename);
324 ✗ avio_printf(list_ioctx, ",%f,%f\n", list_entry->start_time, list_entry->end_time);
325 ✗ break;
326 27 case LIST_TYPE_M3U8:
327 27 avio_printf(list_ioctx, "#EXTINF:%f,\n%s\n",
328 27 list_entry->end_time - list_entry->start_time, list_entry->filename);
329 27 break;
330 ✗ case LIST_TYPE_FFCONCAT:
331 {
332 char *buf;
333 ✗ if (av_escape(&buf, list_entry->filename, NULL, AV_ESCAPE_MODE_AUTO, AV_ESCAPE_FLAG_WHITESPACE) < 0) {
334 ✗ av_log(log_ctx, AV_LOG_WARNING,
335 ✗ "Error writing list entry '%s' in list file\n", list_entry->filename);
336 ✗ return;
337 }
338 ✗ avio_printf(list_ioctx, "file %s\n", buf);
339 ✗ av_free(buf);
340 ✗ break;
341 }
342 ✗ default:
343 ✗ av_assert0(!"Invalid list type");
344 }
345 }
346
347 15 static int segment_end(AVFormatContext *s, int write_trailer, int is_last)
348 {
349 15 SegmentContext *seg = s->priv_data;
350 15 AVFormatContext *oc = seg->avf;
351 15 int ret = 0;
352 AVTimecode tc;
353 AVRational rate;
354 AVDictionaryEntry *tcr;
355 char buf[AV_TIMECODE_STR_SIZE];
356 int i;
357 int err;
358
359
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 15 if (!oc || !oc->pb)
360 ✗ return AVERROR(EINVAL);
361
362 15 av_write_frame(oc, NULL); /* Flush any buffered data (fragmented mp4) */
363
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 15 if (write_trailer)
364 13 ret = av_write_trailer(oc);
365
366
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 15 if (ret < 0)
367 ✗ av_log(s, AV_LOG_ERROR, "Failure occurred when ending segment '%s'\n",
368 oc->url);
369
370
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 15 if (seg->list) {
371
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 24 if (seg->list_size || seg->list_type == LIST_TYPE_M3U8) {
372 12 SegmentListEntry *entry = av_mallocz(sizeof(*entry));
373
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 12 if (!entry) {
374 ✗ ret = AVERROR(ENOMEM);
375 ✗ goto end;
376 }
377
378 /* append new element */
379 12 memcpy(entry, &seg->cur_entry, sizeof(*entry));
380 12 entry->filename = av_strdup(entry->filename);
381
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 12 if (!seg->segment_list_entries)
382 4 seg->segment_list_entries = seg->segment_list_entries_end = entry;
383 else
384 8 seg->segment_list_entries_end->next = entry;
385 12 seg->segment_list_entries_end = entry;
386
387 /* drop first item */
388
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 12 if (seg->list_size && seg->segment_count >= seg->list_size) {
389 ✗ entry = seg->segment_list_entries;
390 ✗ seg->segment_list_entries = seg->segment_list_entries->next;
391 ✗ av_freep(&entry->filename);
392 ✗ av_freep(&entry);
393 }
394
395
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 12 if ((ret = segment_list_open(s)) < 0)
396 ✗ goto end;
397
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 39 for (entry = seg->segment_list_entries; entry; entry = entry->next)
398 27 segment_list_print_entry(seg->list_pb, seg->list_type, entry, s);
399
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 12 if (seg->list_type == LIST_TYPE_M3U8 && is_last)
400 4 avio_printf(seg->list_pb, "#EXT-X-ENDLIST\n");
401 12 ff_format_io_close(s, &seg->list_pb);
402
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 12 if (seg->use_rename)
403 12 ff_rename(seg->temp_list_filename, seg->list, s);
404 } else {
405 ✗ segment_list_print_entry(seg->list_pb, seg->list_type, &seg->cur_entry, s);
406 ✗ avio_flush(seg->list_pb);
407 }
408 }
409
410 15 av_log(s, AV_LOG_VERBOSE, "segment:'%s' count:%d ended\n",
411 15 seg->avf->url, seg->segment_count);
412 15 seg->segment_count++;
413
414
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 15 if (seg->increment_tc) {
415 ✗ tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
416 ✗ if (tcr) {
417 /* search the first video stream */
418 ✗ for (i = 0; i < s->nb_streams; i++) {
419 ✗ if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
420 ✗ rate = s->streams[i]->avg_frame_rate;/* Get fps from the video stream */
421 ✗ err = av_timecode_init_from_string(&tc, rate, tcr->value, s);
422 ✗ if (err < 0) {
423 ✗ av_log(s, AV_LOG_WARNING, "Could not increment global timecode, error occurred during timecode creation.\n");
424 ✗ break;
425 }
426 ✗ tc.start += (int)((seg->cur_entry.end_time - seg->cur_entry.start_time) * av_q2d(rate));/* increment timecode */
427 ✗ av_dict_set(&s->metadata, "timecode",
428 ✗ av_timecode_make_string(&tc, buf, 0), 0);
429 ✗ break;
430 }
431 }
432 } else {
433 ✗ av_log(s, AV_LOG_WARNING, "Could not increment global timecode, no global timecode metadata found.\n");
434 }
435 ✗ for (i = 0; i < s->nb_streams; i++) {
436 ✗ if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
437 char st_buf[AV_TIMECODE_STR_SIZE];
438 AVTimecode st_tc;
439 ✗ AVRational st_rate = s->streams[i]->avg_frame_rate;
440 ✗ AVDictionaryEntry *st_tcr = av_dict_get(s->streams[i]->metadata, "timecode", NULL, 0);
441 ✗ if (st_tcr) {
442 ✗ if ((av_timecode_init_from_string(&st_tc, st_rate, st_tcr->value, s) < 0)) {
443 ✗ av_log(s, AV_LOG_WARNING, "Could not increment stream %d timecode, error occurred during timecode creation.\n", i);
444 ✗ continue;
445 }
446 ✗ st_tc.start += (int)((seg->cur_entry.end_time - seg->cur_entry.start_time) * av_q2d(st_rate)); // increment timecode
447 ✗ av_dict_set(&s->streams[i]->metadata, "timecode", av_timecode_make_string(&st_tc, st_buf, 0), 0);
448 }
449 }
450 }
451 }
452
453 15 end:
454 15 ff_format_io_close(oc, &oc->pb);
455
456 15 return ret;
457 }
458
459 ✗ static int parse_times(void *log_ctx, int64_t **times, int *nb_times,
460 const char *times_str)
461 {
462 char *p;
463 ✗ int i, ret = 0;
464 ✗ char *times_str1 = av_strdup(times_str);
465 ✗ char *saveptr = NULL;
466
467 ✗ if (!times_str1)
468 ✗ return AVERROR(ENOMEM);
469
470 #define FAIL(err) ret = err; goto end
471
472 ✗ *nb_times = 1;
473 ✗ for (p = times_str1; *p; p++)
474 ✗ if (*p == ',')
475 ✗ (*nb_times)++;
476
477 ✗ *times = av_malloc_array(*nb_times, sizeof(**times));
478 ✗ if (!*times) {
479 ✗ av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced times array\n");
480 ✗ FAIL(AVERROR(ENOMEM));
481 }
482
483 ✗ p = times_str1;
484 ✗ for (i = 0; i < *nb_times; i++) {
485 int64_t t;
486 ✗ char *tstr = av_strtok(p, ",", &saveptr);
487 ✗ p = NULL;
488
489 ✗ if (!tstr || !tstr[0]) {
490 ✗ av_log(log_ctx, AV_LOG_ERROR, "Empty time specification in times list %s\n",
491 times_str);
492 ✗ FAIL(AVERROR(EINVAL));
493 }
494
495 ✗ ret = av_parse_time(&t, tstr, 1);
496 ✗ if (ret < 0) {
497 ✗ av_log(log_ctx, AV_LOG_ERROR,
498 "Invalid time duration specification '%s' in times list %s\n", tstr, times_str);
499 ✗ FAIL(AVERROR(EINVAL));
500 }
501 ✗ (*times)[i] = t;
502
503 /* check on monotonicity */
504 ✗ if (i && (*times)[i-1] > (*times)[i]) {
505 ✗ av_log(log_ctx, AV_LOG_ERROR,
506 "Specified time %f is smaller than the last time %f\n",
507 ✗ (float)((*times)[i])/1000000, (float)((*times)[i-1])/1000000);
508 ✗ FAIL(AVERROR(EINVAL));
509 }
510 }
511
512 ✗ end:
513 ✗ av_free(times_str1);
514 ✗ return ret;
515 }
516
517 ✗ static int parse_frames(void *log_ctx, int **frames, int *nb_frames,
518 const char *frames_str)
519 {
520 const char *p;
521 int i;
522
523 ✗ *nb_frames = 1;
524 ✗ for (p = frames_str; *p; p++)
525 ✗ if (*p == ',')
526 ✗ (*nb_frames)++;
527
528 ✗ *frames = av_malloc_array(*nb_frames, sizeof(**frames));
529 ✗ if (!*frames) {
530 ✗ av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced frames array\n");
531 ✗ return AVERROR(ENOMEM);
532 }
533
534 ✗ p = frames_str;
535 ✗ for (i = 0; i < *nb_frames; i++) {
536 long int f;
537 char *tailptr;
538
539 ✗ if (*p == '\0' || *p == ',') {
540 ✗ av_log(log_ctx, AV_LOG_ERROR, "Empty frame specification in frame list %s\n",
541 frames_str);
542 ✗ return AVERROR(EINVAL);
543 }
544 ✗ f = strtol(p, &tailptr, 10);
545 ✗ if (*tailptr != '\0' && *tailptr != ',' || f <= 0 || f >= INT_MAX) {
546 ✗ av_log(log_ctx, AV_LOG_ERROR,
547 "Invalid argument '%s', must be a positive integer < INT_MAX\n",
548 p);
549 ✗ return AVERROR(EINVAL);
550 }
551 ✗ if (*tailptr == ',')
552 ✗ tailptr++;
553 ✗ p = tailptr;
554 ✗ (*frames)[i] = f;
555
556 /* check on monotonicity */
557 ✗ if (i && (*frames)[i-1] > (*frames)[i]) {
558 ✗ av_log(log_ctx, AV_LOG_ERROR,
559 "Specified frame %d is smaller than the last frame %d\n",
560 ✗ (*frames)[i], (*frames)[i-1]);
561 ✗ return AVERROR(EINVAL);
562 }
563 }
564
565 ✗ return 0;
566 }
567
568 ✗ static int open_null_ctx(AVIOContext **ctx)
569 {
570 ✗ int buf_size = 32768;
571 ✗ uint8_t *buf = av_malloc(buf_size);
572 ✗ if (!buf)
573 ✗ return AVERROR(ENOMEM);
574 ✗ *ctx = avio_alloc_context(buf, buf_size, 1, NULL, NULL, NULL, NULL);
575 ✗ if (!*ctx) {
576 ✗ av_free(buf);
577 ✗ return AVERROR(ENOMEM);
578 }
579 ✗ return 0;
580 }
581
582 ✗ static void close_null_ctxp(AVIOContext **pb)
583 {
584 ✗ av_freep(&(*pb)->buffer);
585 ✗ avio_context_free(pb);
586 ✗ }
587
588 5 static int select_reference_stream(AVFormatContext *s)
589 {
590 5 SegmentContext *seg = s->priv_data;
591 int ret, i;
592
593 5 seg->reference_stream_index = -1;
594
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 5 if (!strcmp(seg->reference_stream_specifier, "auto")) {
595 /* select first index of type with highest priority */
596 int type_index_map[AVMEDIA_TYPE_NB];
597 static const enum AVMediaType type_priority_list[] = {
598 AVMEDIA_TYPE_VIDEO,
599 AVMEDIA_TYPE_AUDIO,
600 AVMEDIA_TYPE_SUBTITLE,
601 AVMEDIA_TYPE_DATA,
602 AVMEDIA_TYPE_ATTACHMENT
603 };
604 enum AVMediaType type;
605
606
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 30 for (i = 0; i < AVMEDIA_TYPE_NB; i++)
607 25 type_index_map[i] = -1;
608
609 /* select first index for each type */
610
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 10 for (i = 0; i < s->nb_streams; i++) {
611 5 type = s->streams[i]->codecpar->codec_type;
612
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 5 if ((unsigned)type < AVMEDIA_TYPE_NB && type_index_map[type] == -1
613 /* ignore attached pictures/cover art streams */
614
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 5 && !(s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC))
615 5 type_index_map[type] = i;
616 }
617
618
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 9 for (i = 0; i < FF_ARRAY_ELEMS(type_priority_list); i++) {
619 9 type = type_priority_list[i];
620
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 9 if ((seg->reference_stream_index = type_index_map[type]) >= 0)
621 5 break;
622 }
623 } else {
624 ✗ for (i = 0; i < s->nb_streams; i++) {
625 ✗ ret = avformat_match_stream_specifier(s, s->streams[i],
626 ✗ seg->reference_stream_specifier);
627 ✗ if (ret < 0)
628 ✗ return ret;
629 ✗ if (ret > 0) {
630 ✗ seg->reference_stream_index = i;
631 ✗ break;
632 }
633 }
634 }
635
636
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 5 if (seg->reference_stream_index < 0) {
637 ✗ av_log(s, AV_LOG_ERROR, "Could not select stream matching identifier '%s'\n",
638 seg->reference_stream_specifier);
639 ✗ return AVERROR(EINVAL);
640 }
641
642 5 return 0;
643 }
644
645 5 static void seg_free(AVFormatContext *s)
646 {
647 5 SegmentContext *seg = s->priv_data;
648 SegmentListEntry *cur;
649
650 5 ff_format_io_close(s, &seg->list_pb);
651
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 5 if (seg->avf) {
652
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 5 if (seg->is_nullctx)
653 ✗ close_null_ctxp(&seg->avf->pb);
654 else
655 5 ff_format_io_close(s, &seg->avf->pb);
656 5 avformat_free_context(seg->avf);
657 5 seg->avf = NULL;
658 }
659 5 av_freep(&seg->times);
660 5 av_freep(&seg->frames);
661 5 av_freep(&seg->cur_entry.filename);
662
663 5 cur = seg->segment_list_entries;
664
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 17 while (cur) {
665 12 SegmentListEntry *next = cur->next;
666 12 av_freep(&cur->filename);
667 12 av_free(cur);
668 12 cur = next;
669 }
670 5 }
671
672 5 static int seg_init(AVFormatContext *s)
673 {
674 5 SegmentContext *seg = s->priv_data;
675 5 AVFormatContext *oc = seg->avf;
676 5 AVDictionary *options = NULL;
677 int ret;
678 int i;
679
680 5 seg->segment_count = 0;
681
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 5 if (!seg->write_header_trailer)
682 ✗ seg->individual_header_trailer = 0;
683
684
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 5 if (seg->header_filename) {
685 1 seg->write_header_trailer = 1;
686 1 seg->individual_header_trailer = 0;
687 }
688
689
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 5 if (seg->initial_offset > 0) {
690 ✗ av_log(s, AV_LOG_WARNING, "NOTE: the option initial_offset is deprecated,"
691 "you can use output_ts_offset instead of it\n");
692 }
693
694
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 5 if ((seg->time != 2000000) + !!seg->times_str + !!seg->frames_str > 1) {
695 ✗ av_log(s, AV_LOG_ERROR,
696 "segment_time, segment_times, and segment_frames options "
697 "are mutually exclusive, select just one of them\n");
698 ✗ return AVERROR(EINVAL);
699 }
700
701
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 5 if (seg->times_str || seg->frames_str)
702 ✗ seg->min_seg_duration = 0;
703
704
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 5 if (seg->times_str) {
705 ✗ if ((ret = parse_times(s, &seg->times, &seg->nb_times, seg->times_str)) < 0)
706 ✗ return ret;
707
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 5 } else if (seg->frames_str) {
708 ✗ if ((ret = parse_frames(s, &seg->frames, &seg->nb_frames, seg->frames_str)) < 0)
709 ✗ return ret;
710 } else {
711
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 5 if (seg->use_clocktime) {
712 ✗ if (seg->time <= 0) {
713 ✗ av_log(s, AV_LOG_ERROR, "Invalid negative segment_time with segment_atclocktime option set\n");
714 ✗ return AVERROR(EINVAL);
715 }
716 ✗ seg->clocktime_offset = seg->time - (seg->clocktime_offset % seg->time);
717 }
718
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 5 if (seg->min_seg_duration > seg->time) {
719 ✗ av_log(s, AV_LOG_ERROR, "min_seg_duration cannot be greater than segment_time\n");
720 ✗ return AVERROR(EINVAL);
721 }
722 }
723
724
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 5 if (seg->list) {
725
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 4 if (seg->list_type == LIST_TYPE_UNDEFINED) {
726
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 4 if (av_match_ext(seg->list, "csv" )) seg->list_type = LIST_TYPE_CSV;
727
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 4 else if (av_match_ext(seg->list, "ext" )) seg->list_type = LIST_TYPE_EXT;
728
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 4 else if (av_match_ext(seg->list, "m3u8")) seg->list_type = LIST_TYPE_M3U8;
729 ✗ else if (av_match_ext(seg->list, "ffcat,ffconcat")) seg->list_type = LIST_TYPE_FFCONCAT;
730 ✗ else seg->list_type = LIST_TYPE_FLAT;
731 }
732
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 4 if (!seg->list_size && seg->list_type != LIST_TYPE_M3U8) {
733 ✗ if ((ret = segment_list_open(s)) < 0)
734 ✗ return ret;
735 } else {
736 4 const char *proto = avio_find_protocol_name(seg->list);
737
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 4 seg->use_rename = proto && !strcmp(proto, "file");
738 }
739 }
740
741
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 5 if (seg->list_type == LIST_TYPE_EXT)
742 ✗ av_log(s, AV_LOG_WARNING, "'ext' list type option is deprecated in favor of 'csv'\n");
743
744
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 5 if ((ret = select_reference_stream(s)) < 0)
745 ✗ return ret;
746 5 av_log(s, AV_LOG_VERBOSE, "Selected stream id:%d type:%s\n",
747 seg->reference_stream_index,
748 5 av_get_media_type_string(s->streams[seg->reference_stream_index]->codecpar->codec_type));
749
750 5 seg->reference_stream_first_pts = AV_NOPTS_VALUE;
751
752 5 seg->oformat = av_guess_format(seg->format, s->url, NULL);
753
754
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 5 if (!seg->oformat)
755 ✗ return AVERROR_MUXER_NOT_FOUND;
756
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 5 if (seg->oformat->flags & AVFMT_NOFILE) {
757 ✗ av_log(s, AV_LOG_ERROR, "format %s not supported.\n",
758 ✗ seg->oformat->name);
759 ✗ return AVERROR(EINVAL);
760 }
761
762
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 5 if ((ret = segment_mux_init(s)) < 0)
763 ✗ return ret;
764
765
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 5 if ((ret = set_segment_filename(s)) < 0)
766 ✗ return ret;
767 5 oc = seg->avf;
768
769
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 5 if (seg->write_header_trailer) {
770
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 5 if ((ret = s->io_open(s, &oc->pb,
771
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 5 seg->header_filename ? seg->header_filename : oc->url,
772 AVIO_FLAG_WRITE, NULL)) < 0) {
773 ✗ av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->url);
774 ✗ return ret;
775 }
776
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 5 if (!seg->individual_header_trailer)
777 1 oc->pb->seekable = 0;
778 } else {
779 ✗ if ((ret = open_null_ctx(&oc->pb)) < 0)
780 ✗ return ret;
781 ✗ seg->is_nullctx = 1;
782 }
783
784 5 av_dict_copy(&options, seg->format_options, 0);
785 5 av_dict_set(&options, "fflags", "-autobsf", 0);
786 5 ret = avformat_init_output(oc, &options);
787
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 5 if (av_dict_count(options)) {
788 ✗ av_log(s, AV_LOG_ERROR,
789 "Some of the provided format options are not recognized\n");
790 ✗ av_dict_free(&options);
791 ✗ return AVERROR(EINVAL);
792 }
793 5 av_dict_free(&options);
794
795
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 5 if (ret < 0) {
796 ✗ return ret;
797 }
798 5 seg->segment_frame_count = 0;
799
800
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 5 av_assert0(s->nb_streams == oc->nb_streams);
801
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 5 if (ret == AVSTREAM_INIT_IN_WRITE_HEADER) {
802 ✗ ret = avformat_write_header(oc, NULL);
803 ✗ if (ret < 0)
804 ✗ return ret;
805 ✗ seg->header_written = 1;
806 }
807
808
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 10 for (i = 0; i < s->nb_streams; i++) {
809 5 AVStream *inner_st = oc->streams[i];
810 5 AVStream *outer_st = s->streams[i];
811 5 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
812 }
813
814
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 5 if (oc->avoid_negative_ts > 0 && s->avoid_negative_ts < 0)
815 5 s->avoid_negative_ts = 1;
816
817 5 return ret;
818 }
819
820 5 static int seg_write_header(AVFormatContext *s)
821 {
822 5 SegmentContext *seg = s->priv_data;
823 5 AVFormatContext *oc = seg->avf;
824 int ret;
825
826
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 5 if (!seg->header_written) {
827 5 ret = avformat_write_header(oc, NULL);
828
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 5 if (ret < 0)
829 ✗ return ret;
830 }
831
832
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 5 if (!seg->write_header_trailer || seg->header_filename) {
833
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 1 if (seg->header_filename) {
834 1 av_write_frame(oc, NULL);
835 1 ff_format_io_close(oc, &oc->pb);
836 } else {
837 ✗ close_null_ctxp(&oc->pb);
838 ✗ seg->is_nullctx = 0;
839 }
840
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 1 if ((ret = oc->io_open(oc, &oc->pb, oc->url, AVIO_FLAG_WRITE, NULL)) < 0)
841 ✗ return ret;
842
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 1 if (!seg->individual_header_trailer)
843 1 oc->pb->seekable = 0;
844 }
845
846 5 return 0;
847 }
848
849 1726 static int seg_write_packet(AVFormatContext *s, AVPacket *pkt)
850 {
851 1726 SegmentContext *seg = s->priv_data;
852 1726 AVStream *st = s->streams[pkt->stream_index];
853 1726 int64_t end_pts = INT64_MAX, offset, pkt_pts_avtb;
854 1726 int start_frame = INT_MAX;
855 int ret;
856 struct tm ti;
857 int64_t usecs;
858 int64_t wrapped_val;
859
860
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 1726 if (!seg->avf || !seg->avf->pb)
861 ✗ return AVERROR(EINVAL);
862
863
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 1726 if (!st->codecpar->extradata_size) {
864 size_t pkt_extradata_size;
865 1532 uint8_t *pkt_extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &pkt_extradata_size);
866
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 1532 if (pkt_extradata && pkt_extradata_size > 0) {
867 ✗ ret = ff_alloc_extradata(st->codecpar, pkt_extradata_size);
868 ✗ if (ret < 0) {
869 ✗ av_log(s, AV_LOG_WARNING, "Unable to add extradata to stream. Output segments may be invalid.\n");
870 ✗ goto calc_times;
871 }
872 ✗ memcpy(st->codecpar->extradata, pkt_extradata, pkt_extradata_size);
873 }
874 }
875
876 1726 calc_times:
877
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 1726 if (seg->times) {
878 ✗ end_pts = seg->segment_count < seg->nb_times ?
879 ✗ seg->times[seg->segment_count] : INT64_MAX;
880
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 1726 } else if (seg->frames) {
881 ✗ start_frame = seg->segment_count < seg->nb_frames ?
882 ✗ seg->frames[seg->segment_count] : INT_MAX;
883 } else {
884
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 1726 if (seg->use_clocktime) {
885 ✗ int64_t avgt = av_gettime();
886 ✗ time_t sec = avgt / 1000000;
887 ✗ localtime_r(&sec, &ti);
888 ✗ usecs = (int64_t)(ti.tm_hour * 3600 + ti.tm_min * 60 + ti.tm_sec) * 1000000 + (avgt % 1000000);
889 ✗ wrapped_val = (usecs + seg->clocktime_offset) % seg->time;
890 ✗ if (wrapped_val < seg->last_val && wrapped_val < seg->clocktime_wrap_duration)
891 ✗ seg->cut_pending = 1;
892 ✗ seg->last_val = wrapped_val;
893 } else {
894 1726 end_pts = seg->time * (seg->segment_count + 1);
895 }
896 }
897
898 ff_dlog(s, "packet stream:%d pts:%s pts_time:%s duration_time:%s is_key:%d frame:%d\n",
899 pkt->stream_index, av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base),
900 av_ts2timestr(pkt->duration, &st->time_base),
901 pkt->flags & AV_PKT_FLAG_KEY,
902 pkt->stream_index == seg->reference_stream_index ? seg->frame_count : -1);
903
904
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 1726 if (seg->reference_stream_first_pts == AV_NOPTS_VALUE &&
905
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 5 pkt->stream_index == seg->reference_stream_index &&
906
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 5 pkt->pts != AV_NOPTS_VALUE) {
907 5 seg->reference_stream_first_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
908 }
909
910
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 1726 if (seg->reference_stream_first_pts != AV_NOPTS_VALUE) {
911 1726 end_pts += (INT64_MAX - end_pts >= seg->reference_stream_first_pts) ?
912 1726 seg->reference_stream_first_pts :
913 INT64_MAX - end_pts;
914 }
915
916
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 1726 if (pkt->pts != AV_NOPTS_VALUE)
917 1726 pkt_pts_avtb = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
918
919
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 1726 if (pkt->stream_index == seg->reference_stream_index &&
920
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 1726 (pkt->flags & AV_PKT_FLAG_KEY || seg->break_non_keyframes) &&
921
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 1606 (seg->segment_frame_count > 0 || seg->write_empty) &&
922
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 1601 (seg->cut_pending || seg->frame_count >= start_frame ||
923
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 1601 (pkt->pts != AV_NOPTS_VALUE &&
924
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 3202 pkt_pts_avtb - seg->cur_entry.start_pts >= seg->min_seg_duration &&
925 1601 av_compare_ts(pkt->pts, st->time_base,
926 1601 end_pts - seg->time_delta, AV_TIME_BASE_Q) >= 0))) {
927 /* sanitize end time in case last packet didn't have a defined duration */
928
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 10 if (seg->cur_entry.last_duration == 0)
929 ✗ seg->cur_entry.end_time = (double)pkt->pts * av_q2d(st->time_base);
930
931
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 10 if ((ret = segment_end(s, seg->individual_header_trailer, 0)) < 0)
932 ✗ goto fail;
933
934
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 10 if ((ret = segment_start(s, seg->individual_header_trailer)) < 0)
935 ✗ goto fail;
936
937 10 seg->cut_pending = 0;
938 10 seg->cur_entry.index = seg->segment_idx + seg->segment_idx_wrap * seg->segment_idx_wrap_nb;
939 10 seg->cur_entry.start_time = (double)pkt->pts * av_q2d(st->time_base);
940 10 seg->cur_entry.start_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
941 10 seg->cur_entry.end_time = seg->cur_entry.start_time;
942
943
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 10 if (seg->times || (!seg->frames && !seg->use_clocktime) && seg->write_empty)
944 ✗ goto calc_times;
945 }
946
947
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 1726 if (pkt->stream_index == seg->reference_stream_index) {
948
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 1726 if (pkt->pts != AV_NOPTS_VALUE)
949 1726 seg->cur_entry.end_time =
950
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 1726 FFMAX(seg->cur_entry.end_time, (double)(pkt->pts + pkt->duration) * av_q2d(st->time_base));
951 1726 seg->cur_entry.last_duration = pkt->duration;
952 }
953
954
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 1726 if (seg->segment_frame_count == 0) {
955 45 av_log(s, AV_LOG_VERBOSE, "segment:'%s' starts with packet stream:%d pts:%s pts_time:%s frame:%d\n",
956 15 seg->avf->url, pkt->stream_index,
957 15 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), seg->frame_count);
958 }
959
960 1726 av_log(s, AV_LOG_DEBUG, "stream:%d start_pts_time:%s pts:%s pts_time:%s dts:%s dts_time:%s",
961 pkt->stream_index,
962 1726 av_ts2timestr(seg->cur_entry.start_pts, &AV_TIME_BASE_Q),
963 1726 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base),
964 1726 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base));
965
966 /* compute new timestamps */
967 1726 offset = av_rescale_q(seg->initial_offset - (seg->reset_timestamps ? seg->cur_entry.start_pts : 0),
968
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 1726 AV_TIME_BASE_Q, st->time_base);
969
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 1726 if (pkt->pts != AV_NOPTS_VALUE)
970 1726 pkt->pts += offset;
971
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 1726 if (pkt->dts != AV_NOPTS_VALUE)
972 1726 pkt->dts += offset;
973
974 1726 av_log(s, AV_LOG_DEBUG, " -> pts:%s pts_time:%s dts:%s dts_time:%s\n",
975 1726 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base),
976 1726 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base));
977
978 1726 ret = ff_write_chained(seg->avf, pkt->stream_index, pkt, s,
979
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 1726 seg->initial_offset || seg->reset_timestamps ||
980
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 1726 ffofmt(seg->avf->oformat)->interleave_packet);
981
982 1726 fail:
983 /* Use st->index here as the packet returned from ff_write_chained()
984 * is blank if interleaving has been used. */
985
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 1726 if (st->index == seg->reference_stream_index) {
986 1726 seg->frame_count++;
987 1726 seg->segment_frame_count++;
988 }
989
990 1726 return ret;
991 }
992
993 5 static int seg_write_trailer(struct AVFormatContext *s)
994 {
995 5 SegmentContext *seg = s->priv_data;
996 5 AVFormatContext *oc = seg->avf;
997 int ret;
998
999
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 5 if (!oc)
1000 ✗ return 0;
1001
1002
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 5 if (!seg->write_header_trailer) {
1003 ✗ if ((ret = segment_end(s, 0, 1)) < 0)
1004 ✗ return ret;
1005 ✗ if ((ret = open_null_ctx(&oc->pb)) < 0)
1006 ✗ return ret;
1007 ✗ seg->is_nullctx = 1;
1008 ✗ ret = av_write_trailer(oc);
1009 } else {
1010 5 ret = segment_end(s, 1, 1);
1011 }
1012 5 return ret;
1013 }
1014
1015 5 static int seg_check_bitstream(AVFormatContext *s, AVStream *st,
1016 const AVPacket *pkt)
1017 {
1018 5 SegmentContext *seg = s->priv_data;
1019 5 AVFormatContext *oc = seg->avf;
1020
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 5 if (ffofmt(oc->oformat)->check_bitstream) {
1021 5 AVStream *const ost = oc->streams[st->index];
1022 5 int ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, pkt);
1023
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 5 if (ret == 1) {
1024 5 FFStream *const sti = ffstream(st);
1025 5 FFStream *const osti = ffstream(ost);
1026 5 sti->bsfc = osti->bsfc;
1027 5 osti->bsfc = NULL;
1028 }
1029 5 return ret;
1030 }
1031 ✗ return 1;
1032 }
1033
1034 #define OFFSET(x) offsetof(SegmentContext, x)
1035 #define E AV_OPT_FLAG_ENCODING_PARAM
1036 static const AVOption options[] = {
1037 { "reference_stream", "set reference stream", OFFSET(reference_stream_specifier), AV_OPT_TYPE_STRING, {.str = "auto"}, 0, 0, E },
1038 { "segment_format", "set container format used for the segments", OFFSET(format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
1039 { "segment_format_options", "set list of options for the container format used for the segments", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E },
1040 { "segment_list", "set the segment list filename", OFFSET(list), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
1041 { "segment_header_filename", "write a single file containing the header", OFFSET(header_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
1042
1043 { "segment_list_flags","set flags affecting segment list generation", OFFSET(list_flags), AV_OPT_TYPE_FLAGS, {.i64 = SEGMENT_LIST_FLAG_CACHE }, 0, UINT_MAX, E, .unit = "list_flags"},
1044 { "cache", "allow list caching", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_LIST_FLAG_CACHE }, INT_MIN, INT_MAX, E, .unit = "list_flags"},
1045 { "live", "enable live-friendly list generation (useful for HLS)", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_LIST_FLAG_LIVE }, INT_MIN, INT_MAX, E, .unit = "list_flags"},
1046
1047 { "segment_list_size", "set the maximum number of playlist entries", OFFSET(list_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
1048
1049 { "segment_list_type", "set the segment list type", OFFSET(list_type), AV_OPT_TYPE_INT, {.i64 = LIST_TYPE_UNDEFINED}, -1, LIST_TYPE_NB-1, E, .unit = "list_type" },
1050 { "flat", "flat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FLAT }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1051 { "csv", "csv format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_CSV }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1052 { "ext", "extended format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_EXT }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1053 { "ffconcat", "ffconcat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FFCONCAT }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1054 { "m3u8", "M3U8 format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1055 { "hls", "Apple HTTP Live Streaming compatible", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, .unit = "list_type" },
1056
1057 { "segment_atclocktime", "set segment to be cut at clocktime", OFFSET(use_clocktime), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
1058 { "segment_clocktime_offset", "set segment clocktime offset", OFFSET(clocktime_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, 86400000000LL, E},
1059 { "segment_clocktime_wrap_duration", "set segment clocktime wrapping duration", OFFSET(clocktime_wrap_duration), AV_OPT_TYPE_DURATION, {.i64 = INT64_MAX}, 0, INT64_MAX, E},
1060 { "segment_time", "set segment duration", OFFSET(time),AV_OPT_TYPE_DURATION, {.i64 = 2000000}, INT64_MIN, INT64_MAX, E },
1061 { "segment_time_delta","set approximation value used for the segment times", OFFSET(time_delta), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E },
1062 { "min_seg_duration", "set minimum segment duration", OFFSET(min_seg_duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E },
1063 { "segment_times", "set segment split time points", OFFSET(times_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E },
1064 { "segment_frames", "set segment split frame numbers", OFFSET(frames_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E },
1065 { "segment_wrap", "set number after which the index wraps", OFFSET(segment_idx_wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
1066 { "segment_list_entry_prefix", "set base url prefix for segments", OFFSET(entry_prefix), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
1067 { "segment_start_number", "set the sequence number of the first segment", OFFSET(segment_idx), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
1068 { "segment_wrap_number", "set the number of wrap before the first segment", OFFSET(segment_idx_wrap_nb), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
1069 { "strftime", "set filename expansion with strftime at segment creation", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1070 { "increment_tc", "increment timecode between each segment", OFFSET(increment_tc), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1071 { "break_non_keyframes", "allow breaking segments on non-keyframes", OFFSET(break_non_keyframes), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E },
1072
1073 { "individual_header_trailer", "write header/trailer to each segment", OFFSET(individual_header_trailer), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E },
1074 { "write_header_trailer", "write a header to the first segment and a trailer to the last one", OFFSET(write_header_trailer), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E },
1075 { "reset_timestamps", "reset timestamps at the beginning of each segment", OFFSET(reset_timestamps), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E },
1076 { "initial_offset", "set initial timestamp offset", OFFSET(initial_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, -INT64_MAX, INT64_MAX, E },
1077 { "write_empty_segments", "allow writing empty 'filler' segments", OFFSET(write_empty), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E },
1078 { NULL },
1079 };
1080
1081 static const AVClass seg_class = {
1082 .class_name = "(stream) segment muxer",
1083 .item_name = av_default_item_name,
1084 .option = options,
1085 .version = LIBAVUTIL_VERSION_INT,
1086 };
1087
1088 #if CONFIG_SEGMENT_MUXER
1089 const FFOutputFormat ff_segment_muxer = {
1090 .p.name = "segment",
1091 .p.long_name = NULL_IF_CONFIG_SMALL("segment"),
1092 .p.flags = AVFMT_NOFILE|AVFMT_GLOBALHEADER,
1093 .p.priv_class = &seg_class,
1094 .priv_data_size = sizeof(SegmentContext),
1095 .init = seg_init,
1096 .write_header = seg_write_header,
1097 .write_packet = seg_write_packet,
1098 .write_trailer = seg_write_trailer,
1099 .deinit = seg_free,
1100 .check_bitstream = seg_check_bitstream,
1101 };
1102 #endif
1103
1104 #if CONFIG_STREAM_SEGMENT_MUXER
1105 const FFOutputFormat ff_stream_segment_muxer = {
1106 .p.name = "stream_segment,ssegment",
1107 .p.long_name = NULL_IF_CONFIG_SMALL("streaming segment muxer"),
1108 .p.flags = AVFMT_NOFILE,
1109 .p.priv_class = &seg_class,
1110 .priv_data_size = sizeof(SegmentContext),
1111 .init = seg_init,
1112 .write_header = seg_write_header,
1113 .write_packet = seg_write_packet,
1114 .write_trailer = seg_write_trailer,
1115 .deinit = seg_free,
1116 .check_bitstream = seg_check_bitstream,
1117 };
1118 #endif
1119