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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/bprint.h" | ||
42 | #include "libavutil/parseutils.h" | ||
43 | #include "libavutil/mathematics.h" | ||
44 | #include "libavutil/time.h" | ||
45 | #include "libavutil/timecode.h" | ||
46 | #include "libavutil/time_internal.h" | ||
47 | #include "libavutil/timestamp.h" | ||
48 | |||
49 | typedef struct SegmentListEntry { | ||
50 | int index; | ||
51 | double start_time, end_time; | ||
52 | int64_t start_pts; | ||
53 | int64_t offset_pts; | ||
54 | char *filename; | ||
55 | struct SegmentListEntry *next; | ||
56 | int64_t last_duration; | ||
57 | } SegmentListEntry; | ||
58 | |||
59 | typedef enum { | ||
60 | LIST_TYPE_UNDEFINED = -1, | ||
61 | LIST_TYPE_FLAT = 0, | ||
62 | LIST_TYPE_CSV, | ||
63 | LIST_TYPE_M3U8, | ||
64 | LIST_TYPE_EXT, ///< deprecated | ||
65 | LIST_TYPE_FFCONCAT, | ||
66 | LIST_TYPE_NB, | ||
67 | } ListType; | ||
68 | |||
69 | #define SEGMENT_LIST_FLAG_CACHE 1 | ||
70 | #define SEGMENT_LIST_FLAG_LIVE 2 | ||
71 | |||
72 | typedef struct SegmentContext { | ||
73 | const AVClass *class; /**< Class for private options. */ | ||
74 | int segment_idx; ///< index of the segment file to write, starting from 0 | ||
75 | int segment_idx_wrap; ///< number after which the index wraps | ||
76 | int segment_idx_wrap_nb; ///< number of time the index has wrapped | ||
77 | int segment_count; ///< number of segment files already written | ||
78 | const AVOutputFormat *oformat; | ||
79 | AVFormatContext *avf; | ||
80 | char *format; ///< format to use for output segment files | ||
81 | AVDictionary *format_options; | ||
82 | char *list; ///< filename for the segment list file | ||
83 | int list_flags; ///< flags affecting list generation | ||
84 | int list_size; ///< number of entries for the segment list file | ||
85 | |||
86 | int is_nullctx; ///< whether avf->pb is a nullctx | ||
87 | int use_clocktime; ///< flag to cut segments at regular clock time | ||
88 | int64_t clocktime_offset; //< clock offset for cutting the segments at regular clock time | ||
89 | int64_t clocktime_wrap_duration; //< wrapping duration considered for starting a new segment | ||
90 | int64_t last_val; ///< remember last time for wrap around detection | ||
91 | int cut_pending; | ||
92 | int header_written; ///< whether we've already called avformat_write_header | ||
93 | |||
94 | char *entry_prefix; ///< prefix to add to list entry filenames | ||
95 | int list_type; ///< set the list type | ||
96 | AVIOContext *list_pb; ///< list file put-byte context | ||
97 | int64_t time; ///< segment duration | ||
98 | int64_t min_seg_duration; ///< minimum segment duration | ||
99 | int use_strftime; ///< flag to expand filename with strftime | ||
100 | int increment_tc; ///< flag to increment timecode if found | ||
101 | |||
102 | char *times_str; ///< segment times specification string | ||
103 | int64_t *times; ///< list of segment interval specification | ||
104 | int nb_times; ///< number of elements in the times array | ||
105 | |||
106 | char *frames_str; ///< segment frame numbers specification string | ||
107 | int *frames; ///< list of frame number specification | ||
108 | int nb_frames; ///< number of elements in the frames array | ||
109 | int frame_count; ///< total number of reference frames | ||
110 | int segment_frame_count; ///< number of reference frames in the segment | ||
111 | |||
112 | int64_t time_delta; | ||
113 | int individual_header_trailer; /**< Set by a private option. */ | ||
114 | int write_header_trailer; /**< Set by a private option. */ | ||
115 | char *header_filename; ///< filename to write the output header to | ||
116 | |||
117 | int reset_timestamps; ///< reset timestamps at the beginning of each segment | ||
118 | int64_t initial_offset; ///< initial timestamps offset, expressed in microseconds | ||
119 | char *reference_stream_specifier; ///< reference stream specifier | ||
120 | int reference_stream_index; | ||
121 | int64_t reference_stream_first_pts; ///< initial timestamp, expressed in microseconds | ||
122 | int break_non_keyframes; | ||
123 | int write_empty; | ||
124 | |||
125 | int use_rename; | ||
126 | char *temp_list_filename; | ||
127 | |||
128 | SegmentListEntry cur_entry; | ||
129 | SegmentListEntry *segment_list_entries; | ||
130 | SegmentListEntry *segment_list_entries_end; | ||
131 | } SegmentContext; | ||
132 | |||
133 | ✗ | static void print_csv_escaped_str(AVIOContext *ctx, const char *str) | |
134 | { | ||
135 | ✗ | int needs_quoting = !!str[strcspn(str, "\",\n\r")]; | |
136 | |||
137 | ✗ | if (needs_quoting) | |
138 | ✗ | avio_w8(ctx, '"'); | |
139 | |||
140 | ✗ | for (; *str; str++) { | |
141 | ✗ | if (*str == '"') | |
142 | ✗ | avio_w8(ctx, '"'); | |
143 | ✗ | avio_w8(ctx, *str); | |
144 | } | ||
145 | ✗ | if (needs_quoting) | |
146 | ✗ | avio_w8(ctx, '"'); | |
147 | ✗ | } | |
148 | |||
149 | 13 | static int segment_mux_init(AVFormatContext *s) | |
150 | { | ||
151 | 13 | SegmentContext *seg = s->priv_data; | |
152 | AVFormatContext *oc; | ||
153 | int i; | ||
154 | int ret; | ||
155 | |||
156 | 13 | ret = avformat_alloc_output_context2(&seg->avf, seg->oformat, NULL, NULL); | |
157 |
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13 | if (ret < 0) |
158 | ✗ | return ret; | |
159 | 13 | oc = seg->avf; | |
160 | |||
161 | 13 | oc->interrupt_callback = s->interrupt_callback; | |
162 | 13 | oc->max_delay = s->max_delay; | |
163 | 13 | av_dict_copy(&oc->metadata, s->metadata, 0); | |
164 | 13 | oc->opaque = s->opaque; | |
165 | 13 | oc->io_close2 = s->io_close2; | |
166 | 13 | oc->io_open = s->io_open; | |
167 | 13 | oc->flags = s->flags; | |
168 | |||
169 |
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26 | for (i = 0; i < s->nb_streams; i++) { |
170 | 13 | AVStream *st, *ist = s->streams[i]; | |
171 | 13 | AVCodecParameters *ipar = ist->codecpar, *opar; | |
172 | |||
173 | 13 | st = ff_stream_clone(oc, ist); | |
174 |
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13 | if (!st) |
175 | ✗ | return AVERROR(ENOMEM); | |
176 | 13 | opar = st->codecpar; | |
177 |
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13 | if (!oc->oformat->codec_tag || |
178 |
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8 | av_codec_get_id (oc->oformat->codec_tag, ipar->codec_tag) == opar->codec_id || |
179 | 4 | av_codec_get_tag(oc->oformat->codec_tag, ipar->codec_id) <= 0) { | |
180 | 9 | opar->codec_tag = ipar->codec_tag; | |
181 | } else { | ||
182 | 4 | opar->codec_tag = 0; | |
183 | } | ||
184 | } | ||
185 | |||
186 | 13 | return 0; | |
187 | } | ||
188 | |||
189 | 15 | static int set_segment_filename(AVFormatContext *s) | |
190 | { | ||
191 | 15 | SegmentContext *seg = s->priv_data; | |
192 | 15 | AVFormatContext *oc = seg->avf; | |
193 | size_t size; | ||
194 | int ret; | ||
195 | AVBPrint filename; | ||
196 | char *new_name; | ||
197 | |||
198 | 15 | av_bprint_init(&filename, 0, AV_BPRINT_SIZE_UNLIMITED); | |
199 |
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15 | if (seg->segment_idx_wrap) |
200 | ✗ | seg->segment_idx %= seg->segment_idx_wrap; | |
201 |
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15 | if (seg->use_strftime) { |
202 | time_t now0; | ||
203 | struct tm *tm, tmpbuf; | ||
204 | ✗ | time(&now0); | |
205 | ✗ | tm = localtime_r(&now0, &tmpbuf); | |
206 | ✗ | av_bprint_strftime(&filename, s->url, tm); | |
207 | ✗ | if (!av_bprint_is_complete(&filename)) { | |
208 | ✗ | av_bprint_finalize(&filename, NULL); | |
209 | ✗ | return AVERROR(ENOMEM); | |
210 | } | ||
211 | } else { | ||
212 | 15 | ret = ff_bprint_get_frame_filename(&filename, s->url, seg->segment_idx, 0); | |
213 |
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15 | if (ret < 0) { |
214 | ✗ | av_bprint_finalize(&filename, NULL); | |
215 | ✗ | av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->url); | |
216 | ✗ | return ret; | |
217 | } | ||
218 | } | ||
219 | 15 | ret = av_bprint_finalize(&filename, &new_name); | |
220 |
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15 | if (ret < 0) |
221 | ✗ | return ret; | |
222 | 15 | ff_format_set_url(oc, new_name); | |
223 | |||
224 | /* copy modified name in list entry */ | ||
225 | 15 | size = strlen(av_basename(oc->url)) + 1; | |
226 |
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15 | if (seg->entry_prefix) |
227 | ✗ | size += strlen(seg->entry_prefix); | |
228 | |||
229 |
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15 | if ((ret = av_reallocp(&seg->cur_entry.filename, size)) < 0) |
230 | ✗ | return ret; | |
231 | 15 | snprintf(seg->cur_entry.filename, size, "%s%s", | |
232 |
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15 | seg->entry_prefix ? seg->entry_prefix : "", |
233 | 15 | av_basename(oc->url)); | |
234 | |||
235 | 15 | return 0; | |
236 | } | ||
237 | |||
238 | 10 | static int segment_start(AVFormatContext *s, int write_header) | |
239 | { | ||
240 | 10 | SegmentContext *seg = s->priv_data; | |
241 | 10 | AVFormatContext *oc = seg->avf; | |
242 | 10 | int err = 0; | |
243 | |||
244 |
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10 | if (write_header) { |
245 | 8 | avformat_free_context(oc); | |
246 | 8 | seg->avf = NULL; | |
247 |
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8 | if ((err = segment_mux_init(s)) < 0) |
248 | ✗ | return err; | |
249 | 8 | oc = seg->avf; | |
250 | } | ||
251 | |||
252 | 10 | seg->segment_idx++; | |
253 |
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10 | if ((seg->segment_idx_wrap) && (seg->segment_idx % seg->segment_idx_wrap == 0)) |
254 | ✗ | seg->segment_idx_wrap_nb++; | |
255 | |||
256 |
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10 | if ((err = set_segment_filename(s)) < 0) |
257 | ✗ | return err; | |
258 | |||
259 |
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10 | if ((err = s->io_open(s, &oc->pb, oc->url, AVIO_FLAG_WRITE, NULL)) < 0) { |
260 | ✗ | av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->url); | |
261 | ✗ | return err; | |
262 | } | ||
263 |
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10 | if (!seg->individual_header_trailer) |
264 | 2 | oc->pb->seekable = 0; | |
265 | |||
266 |
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10 | if (oc->oformat->priv_class && oc->priv_data) |
267 | 10 | av_opt_set(oc->priv_data, "mpegts_flags", "+resend_headers", 0); | |
268 | |||
269 |
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10 | if (write_header) { |
270 | 8 | AVDictionary *options = NULL; | |
271 | 8 | av_dict_copy(&options, seg->format_options, 0); | |
272 | 8 | av_dict_set(&options, "fflags", "-autobsf", 0); | |
273 | 8 | err = avformat_write_header(oc, &options); | |
274 | 8 | av_dict_free(&options); | |
275 |
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8 | if (err < 0) |
276 | ✗ | return err; | |
277 | } | ||
278 | |||
279 | 10 | seg->segment_frame_count = 0; | |
280 | 10 | return 0; | |
281 | } | ||
282 | |||
283 | 12 | static int segment_list_open(AVFormatContext *s) | |
284 | { | ||
285 | 12 | SegmentContext *seg = s->priv_data; | |
286 | int ret; | ||
287 | |||
288 | 12 | av_freep(&seg->temp_list_filename); | |
289 |
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12 | seg->temp_list_filename = av_asprintf(seg->use_rename ? "%s.tmp" : "%s", seg->list); |
290 |
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12 | if (!seg->temp_list_filename) |
291 | ✗ | return AVERROR(ENOMEM); | |
292 | 12 | ret = s->io_open(s, &seg->list_pb, seg->temp_list_filename, AVIO_FLAG_WRITE, NULL); | |
293 |
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12 | if (ret < 0) { |
294 | ✗ | av_log(s, AV_LOG_ERROR, "Failed to open segment list '%s'\n", seg->list); | |
295 | ✗ | return ret; | |
296 | } | ||
297 | |||
298 |
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24 | if (seg->list_type == LIST_TYPE_M3U8 && seg->segment_list_entries) { |
299 | SegmentListEntry *entry; | ||
300 | 12 | double max_duration = 0; | |
301 | |||
302 | 12 | avio_printf(seg->list_pb, "#EXTM3U\n"); | |
303 | 12 | avio_printf(seg->list_pb, "#EXT-X-VERSION:3\n"); | |
304 | 12 | avio_printf(seg->list_pb, "#EXT-X-MEDIA-SEQUENCE:%d\n", seg->segment_list_entries->index); | |
305 | 12 | avio_printf(seg->list_pb, "#EXT-X-ALLOW-CACHE:%s\n", | |
306 |
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12 | seg->list_flags & SEGMENT_LIST_FLAG_CACHE ? "YES" : "NO"); |
307 | |||
308 | 12 | av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%d\n", | |
309 | 12 | seg->segment_list_entries->index); | |
310 | |||
311 |
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39 | for (entry = seg->segment_list_entries; entry; entry = entry->next) |
312 |
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27 | max_duration = FFMAX(max_duration, entry->end_time - entry->start_time); |
313 | 12 | avio_printf(seg->list_pb, "#EXT-X-TARGETDURATION:%"PRId64"\n", (int64_t)ceil(max_duration)); | |
314 | ✗ | } else if (seg->list_type == LIST_TYPE_FFCONCAT) { | |
315 | ✗ | avio_printf(seg->list_pb, "ffconcat version 1.0\n"); | |
316 | } | ||
317 | |||
318 | 12 | return ret; | |
319 | } | ||
320 | |||
321 | 27 | static void segment_list_print_entry(AVIOContext *list_ioctx, | |
322 | ListType list_type, | ||
323 | const SegmentListEntry *list_entry, | ||
324 | void *log_ctx) | ||
325 | { | ||
326 |
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27 | switch (list_type) { |
327 | ✗ | case LIST_TYPE_FLAT: | |
328 | ✗ | avio_printf(list_ioctx, "%s\n", list_entry->filename); | |
329 | ✗ | break; | |
330 | ✗ | case LIST_TYPE_CSV: | |
331 | case LIST_TYPE_EXT: | ||
332 | ✗ | print_csv_escaped_str(list_ioctx, list_entry->filename); | |
333 | ✗ | avio_printf(list_ioctx, ",%f,%f\n", list_entry->start_time, list_entry->end_time); | |
334 | ✗ | break; | |
335 | 27 | case LIST_TYPE_M3U8: | |
336 | 27 | avio_printf(list_ioctx, "#EXTINF:%f,\n%s\n", | |
337 | 27 | list_entry->end_time - list_entry->start_time, list_entry->filename); | |
338 | 27 | break; | |
339 | ✗ | case LIST_TYPE_FFCONCAT: | |
340 | { | ||
341 | char *buf; | ||
342 | ✗ | if (av_escape(&buf, list_entry->filename, NULL, AV_ESCAPE_MODE_AUTO, AV_ESCAPE_FLAG_WHITESPACE) < 0) { | |
343 | ✗ | av_log(log_ctx, AV_LOG_WARNING, | |
344 | ✗ | "Error writing list entry '%s' in list file\n", list_entry->filename); | |
345 | ✗ | return; | |
346 | } | ||
347 | ✗ | avio_printf(list_ioctx, "file %s\n", buf); | |
348 | ✗ | av_free(buf); | |
349 | ✗ | break; | |
350 | } | ||
351 | ✗ | default: | |
352 | ✗ | av_assert0(!"Invalid list type"); | |
353 | } | ||
354 | } | ||
355 | |||
356 | 15 | static int segment_end(AVFormatContext *s, int write_trailer, int is_last) | |
357 | { | ||
358 | 15 | SegmentContext *seg = s->priv_data; | |
359 | 15 | AVFormatContext *oc = seg->avf; | |
360 | 15 | int ret = 0; | |
361 | AVTimecode tc; | ||
362 | AVRational rate; | ||
363 | AVDictionaryEntry *tcr; | ||
364 | char buf[AV_TIMECODE_STR_SIZE]; | ||
365 | int i; | ||
366 | int err; | ||
367 | |||
368 |
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15 | if (!oc || !oc->pb) |
369 | ✗ | return AVERROR(EINVAL); | |
370 | |||
371 | 15 | av_write_frame(oc, NULL); /* Flush any buffered data (fragmented mp4) */ | |
372 |
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15 | if (write_trailer) |
373 | 13 | ret = av_write_trailer(oc); | |
374 | |||
375 |
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15 | if (ret < 0) |
376 | ✗ | av_log(s, AV_LOG_ERROR, "Failure occurred when ending segment '%s'\n", | |
377 | oc->url); | ||
378 | |||
379 |
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15 | if (seg->list) { |
380 |
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24 | if (seg->list_size || seg->list_type == LIST_TYPE_M3U8) { |
381 | 12 | SegmentListEntry *entry = av_mallocz(sizeof(*entry)); | |
382 |
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12 | if (!entry) { |
383 | ✗ | ret = AVERROR(ENOMEM); | |
384 | ✗ | goto end; | |
385 | } | ||
386 | |||
387 | /* append new element */ | ||
388 | 12 | memcpy(entry, &seg->cur_entry, sizeof(*entry)); | |
389 | 12 | entry->filename = av_strdup(entry->filename); | |
390 |
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12 | if (!seg->segment_list_entries) |
391 | 4 | seg->segment_list_entries = seg->segment_list_entries_end = entry; | |
392 | else | ||
393 | 8 | seg->segment_list_entries_end->next = entry; | |
394 | 12 | seg->segment_list_entries_end = entry; | |
395 | |||
396 | /* drop first item */ | ||
397 |
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12 | if (seg->list_size && seg->segment_count >= seg->list_size) { |
398 | ✗ | entry = seg->segment_list_entries; | |
399 | ✗ | seg->segment_list_entries = seg->segment_list_entries->next; | |
400 | ✗ | av_freep(&entry->filename); | |
401 | ✗ | av_freep(&entry); | |
402 | } | ||
403 | |||
404 |
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12 | if ((ret = segment_list_open(s)) < 0) |
405 | ✗ | goto end; | |
406 |
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39 | for (entry = seg->segment_list_entries; entry; entry = entry->next) |
407 | 27 | segment_list_print_entry(seg->list_pb, seg->list_type, entry, s); | |
408 |
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12 | if (seg->list_type == LIST_TYPE_M3U8 && is_last) |
409 | 4 | avio_printf(seg->list_pb, "#EXT-X-ENDLIST\n"); | |
410 | 12 | ff_format_io_close(s, &seg->list_pb); | |
411 |
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12 | if (seg->use_rename) |
412 | 12 | ff_rename(seg->temp_list_filename, seg->list, s); | |
413 | } else { | ||
414 | ✗ | segment_list_print_entry(seg->list_pb, seg->list_type, &seg->cur_entry, s); | |
415 | ✗ | avio_flush(seg->list_pb); | |
416 | } | ||
417 | } | ||
418 | |||
419 | 15 | av_log(s, AV_LOG_VERBOSE, "segment:'%s' count:%d ended\n", | |
420 | 15 | seg->avf->url, seg->segment_count); | |
421 | 15 | seg->segment_count++; | |
422 | |||
423 |
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15 | if (seg->increment_tc) { |
424 | ✗ | tcr = av_dict_get(s->metadata, "timecode", NULL, 0); | |
425 | ✗ | if (tcr) { | |
426 | /* search the first video stream */ | ||
427 | ✗ | for (i = 0; i < s->nb_streams; i++) { | |
428 | ✗ | if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { | |
429 | ✗ | rate = s->streams[i]->avg_frame_rate;/* Get fps from the video stream */ | |
430 | ✗ | err = av_timecode_init_from_string(&tc, rate, tcr->value, s); | |
431 | ✗ | if (err < 0) { | |
432 | ✗ | av_log(s, AV_LOG_WARNING, "Could not increment global timecode, error occurred during timecode creation.\n"); | |
433 | ✗ | break; | |
434 | } | ||
435 | ✗ | tc.start += (int)((seg->cur_entry.end_time - seg->cur_entry.start_time) * av_q2d(rate));/* increment timecode */ | |
436 | ✗ | av_dict_set(&s->metadata, "timecode", | |
437 | ✗ | av_timecode_make_string(&tc, buf, 0), 0); | |
438 | ✗ | break; | |
439 | } | ||
440 | } | ||
441 | } else { | ||
442 | ✗ | av_log(s, AV_LOG_WARNING, "Could not increment global timecode, no global timecode metadata found.\n"); | |
443 | } | ||
444 | ✗ | for (i = 0; i < s->nb_streams; i++) { | |
445 | ✗ | if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { | |
446 | char st_buf[AV_TIMECODE_STR_SIZE]; | ||
447 | AVTimecode st_tc; | ||
448 | ✗ | AVRational st_rate = s->streams[i]->avg_frame_rate; | |
449 | ✗ | AVDictionaryEntry *st_tcr = av_dict_get(s->streams[i]->metadata, "timecode", NULL, 0); | |
450 | ✗ | if (st_tcr) { | |
451 | ✗ | if ((av_timecode_init_from_string(&st_tc, st_rate, st_tcr->value, s) < 0)) { | |
452 | ✗ | av_log(s, AV_LOG_WARNING, "Could not increment stream %d timecode, error occurred during timecode creation.\n", i); | |
453 | ✗ | continue; | |
454 | } | ||
455 | ✗ | st_tc.start += (int)((seg->cur_entry.end_time - seg->cur_entry.start_time) * av_q2d(st_rate)); // increment timecode | |
456 | ✗ | av_dict_set(&s->streams[i]->metadata, "timecode", av_timecode_make_string(&st_tc, st_buf, 0), 0); | |
457 | } | ||
458 | } | ||
459 | } | ||
460 | } | ||
461 | |||
462 | 15 | end: | |
463 | 15 | ff_format_io_close(oc, &oc->pb); | |
464 | |||
465 | 15 | return ret; | |
466 | } | ||
467 | |||
468 | ✗ | static int parse_times(void *log_ctx, int64_t **times, int *nb_times, | |
469 | const char *times_str) | ||
470 | { | ||
471 | char *p; | ||
472 | ✗ | int i, ret = 0; | |
473 | ✗ | char *times_str1 = av_strdup(times_str); | |
474 | ✗ | char *saveptr = NULL; | |
475 | |||
476 | ✗ | if (!times_str1) | |
477 | ✗ | return AVERROR(ENOMEM); | |
478 | |||
479 | #define FAIL(err) ret = err; goto end | ||
480 | |||
481 | ✗ | *nb_times = 1; | |
482 | ✗ | for (p = times_str1; *p; p++) | |
483 | ✗ | if (*p == ',') | |
484 | ✗ | (*nb_times)++; | |
485 | |||
486 | ✗ | *times = av_malloc_array(*nb_times, sizeof(**times)); | |
487 | ✗ | if (!*times) { | |
488 | ✗ | av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced times array\n"); | |
489 | ✗ | FAIL(AVERROR(ENOMEM)); | |
490 | } | ||
491 | |||
492 | ✗ | p = times_str1; | |
493 | ✗ | for (i = 0; i < *nb_times; i++) { | |
494 | int64_t t; | ||
495 | ✗ | char *tstr = av_strtok(p, ",", &saveptr); | |
496 | ✗ | p = NULL; | |
497 | |||
498 | ✗ | if (!tstr || !tstr[0]) { | |
499 | ✗ | av_log(log_ctx, AV_LOG_ERROR, "Empty time specification in times list %s\n", | |
500 | times_str); | ||
501 | ✗ | FAIL(AVERROR(EINVAL)); | |
502 | } | ||
503 | |||
504 | ✗ | ret = av_parse_time(&t, tstr, 1); | |
505 | ✗ | if (ret < 0) { | |
506 | ✗ | av_log(log_ctx, AV_LOG_ERROR, | |
507 | "Invalid time duration specification '%s' in times list %s\n", tstr, times_str); | ||
508 | ✗ | FAIL(AVERROR(EINVAL)); | |
509 | } | ||
510 | ✗ | (*times)[i] = t; | |
511 | |||
512 | /* check on monotonicity */ | ||
513 | ✗ | if (i && (*times)[i-1] > (*times)[i]) { | |
514 | ✗ | av_log(log_ctx, AV_LOG_ERROR, | |
515 | "Specified time %f is smaller than the last time %f\n", | ||
516 | ✗ | (float)((*times)[i])/1000000, (float)((*times)[i-1])/1000000); | |
517 | ✗ | FAIL(AVERROR(EINVAL)); | |
518 | } | ||
519 | } | ||
520 | |||
521 | ✗ | end: | |
522 | ✗ | av_free(times_str1); | |
523 | ✗ | return ret; | |
524 | } | ||
525 | |||
526 | ✗ | static int parse_frames(void *log_ctx, int **frames, int *nb_frames, | |
527 | const char *frames_str) | ||
528 | { | ||
529 | const char *p; | ||
530 | int i; | ||
531 | |||
532 | ✗ | *nb_frames = 1; | |
533 | ✗ | for (p = frames_str; *p; p++) | |
534 | ✗ | if (*p == ',') | |
535 | ✗ | (*nb_frames)++; | |
536 | |||
537 | ✗ | *frames = av_malloc_array(*nb_frames, sizeof(**frames)); | |
538 | ✗ | if (!*frames) { | |
539 | ✗ | av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced frames array\n"); | |
540 | ✗ | return AVERROR(ENOMEM); | |
541 | } | ||
542 | |||
543 | ✗ | p = frames_str; | |
544 | ✗ | for (i = 0; i < *nb_frames; i++) { | |
545 | long int f; | ||
546 | char *tailptr; | ||
547 | |||
548 | ✗ | if (*p == '\0' || *p == ',') { | |
549 | ✗ | av_log(log_ctx, AV_LOG_ERROR, "Empty frame specification in frame list %s\n", | |
550 | frames_str); | ||
551 | ✗ | return AVERROR(EINVAL); | |
552 | } | ||
553 | ✗ | f = strtol(p, &tailptr, 10); | |
554 | ✗ | if (*tailptr != '\0' && *tailptr != ',' || f <= 0 || f >= INT_MAX) { | |
555 | ✗ | av_log(log_ctx, AV_LOG_ERROR, | |
556 | "Invalid argument '%s', must be a positive integer < INT_MAX\n", | ||
557 | p); | ||
558 | ✗ | return AVERROR(EINVAL); | |
559 | } | ||
560 | ✗ | if (*tailptr == ',') | |
561 | ✗ | tailptr++; | |
562 | ✗ | p = tailptr; | |
563 | ✗ | (*frames)[i] = f; | |
564 | |||
565 | /* check on monotonicity */ | ||
566 | ✗ | if (i && (*frames)[i-1] > (*frames)[i]) { | |
567 | ✗ | av_log(log_ctx, AV_LOG_ERROR, | |
568 | "Specified frame %d is smaller than the last frame %d\n", | ||
569 | ✗ | (*frames)[i], (*frames)[i-1]); | |
570 | ✗ | return AVERROR(EINVAL); | |
571 | } | ||
572 | } | ||
573 | |||
574 | ✗ | return 0; | |
575 | } | ||
576 | |||
577 | ✗ | static int open_null_ctx(AVIOContext **ctx) | |
578 | { | ||
579 | ✗ | int buf_size = 32768; | |
580 | ✗ | uint8_t *buf = av_malloc(buf_size); | |
581 | ✗ | if (!buf) | |
582 | ✗ | return AVERROR(ENOMEM); | |
583 | ✗ | *ctx = avio_alloc_context(buf, buf_size, 1, NULL, NULL, NULL, NULL); | |
584 | ✗ | if (!*ctx) { | |
585 | ✗ | av_free(buf); | |
586 | ✗ | return AVERROR(ENOMEM); | |
587 | } | ||
588 | ✗ | return 0; | |
589 | } | ||
590 | |||
591 | ✗ | static void close_null_ctxp(AVIOContext **pb) | |
592 | { | ||
593 | ✗ | av_freep(&(*pb)->buffer); | |
594 | ✗ | avio_context_free(pb); | |
595 | ✗ | } | |
596 | |||
597 | 5 | static int select_reference_stream(AVFormatContext *s) | |
598 | { | ||
599 | 5 | SegmentContext *seg = s->priv_data; | |
600 | int ret, i; | ||
601 | |||
602 | 5 | seg->reference_stream_index = -1; | |
603 |
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5 | if (!strcmp(seg->reference_stream_specifier, "auto")) { |
604 | /* select first index of type with highest priority */ | ||
605 | int type_index_map[AVMEDIA_TYPE_NB]; | ||
606 | static const enum AVMediaType type_priority_list[] = { | ||
607 | AVMEDIA_TYPE_VIDEO, | ||
608 | AVMEDIA_TYPE_AUDIO, | ||
609 | AVMEDIA_TYPE_SUBTITLE, | ||
610 | AVMEDIA_TYPE_DATA, | ||
611 | AVMEDIA_TYPE_ATTACHMENT | ||
612 | }; | ||
613 | enum AVMediaType type; | ||
614 | |||
615 |
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30 | for (i = 0; i < AVMEDIA_TYPE_NB; i++) |
616 | 25 | type_index_map[i] = -1; | |
617 | |||
618 | /* select first index for each type */ | ||
619 |
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10 | for (i = 0; i < s->nb_streams; i++) { |
620 | 5 | type = s->streams[i]->codecpar->codec_type; | |
621 |
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5 | if ((unsigned)type < AVMEDIA_TYPE_NB && type_index_map[type] == -1 |
622 | /* ignore attached pictures/cover art streams */ | ||
623 |
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5 | && !(s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC)) |
624 | 5 | type_index_map[type] = i; | |
625 | } | ||
626 | |||
627 |
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9 | for (i = 0; i < FF_ARRAY_ELEMS(type_priority_list); i++) { |
628 | 9 | type = type_priority_list[i]; | |
629 |
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9 | if ((seg->reference_stream_index = type_index_map[type]) >= 0) |
630 | 5 | break; | |
631 | } | ||
632 | } else { | ||
633 | ✗ | for (i = 0; i < s->nb_streams; i++) { | |
634 | ✗ | ret = avformat_match_stream_specifier(s, s->streams[i], | |
635 | ✗ | seg->reference_stream_specifier); | |
636 | ✗ | if (ret < 0) | |
637 | ✗ | return ret; | |
638 | ✗ | if (ret > 0) { | |
639 | ✗ | seg->reference_stream_index = i; | |
640 | ✗ | break; | |
641 | } | ||
642 | } | ||
643 | } | ||
644 | |||
645 |
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5 | if (seg->reference_stream_index < 0) { |
646 | ✗ | av_log(s, AV_LOG_ERROR, "Could not select stream matching identifier '%s'\n", | |
647 | seg->reference_stream_specifier); | ||
648 | ✗ | return AVERROR(EINVAL); | |
649 | } | ||
650 | |||
651 | 5 | return 0; | |
652 | } | ||
653 | |||
654 | 5 | static void seg_free(AVFormatContext *s) | |
655 | { | ||
656 | 5 | SegmentContext *seg = s->priv_data; | |
657 | SegmentListEntry *cur; | ||
658 | |||
659 | 5 | ff_format_io_close(s, &seg->list_pb); | |
660 |
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5 | if (seg->avf) { |
661 |
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5 | if (seg->is_nullctx) |
662 | ✗ | close_null_ctxp(&seg->avf->pb); | |
663 | else | ||
664 | 5 | ff_format_io_close(s, &seg->avf->pb); | |
665 | 5 | avformat_free_context(seg->avf); | |
666 | 5 | seg->avf = NULL; | |
667 | } | ||
668 | 5 | av_freep(&seg->times); | |
669 | 5 | av_freep(&seg->frames); | |
670 | 5 | av_freep(&seg->cur_entry.filename); | |
671 | 5 | av_freep(&seg->temp_list_filename); | |
672 | |||
673 | 5 | cur = seg->segment_list_entries; | |
674 |
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17 | while (cur) { |
675 | 12 | SegmentListEntry *next = cur->next; | |
676 | 12 | av_freep(&cur->filename); | |
677 | 12 | av_free(cur); | |
678 | 12 | cur = next; | |
679 | } | ||
680 | 5 | } | |
681 | |||
682 | 5 | static int seg_init(AVFormatContext *s) | |
683 | { | ||
684 | 5 | SegmentContext *seg = s->priv_data; | |
685 | 5 | AVFormatContext *oc = seg->avf; | |
686 | 5 | AVDictionary *options = NULL; | |
687 | int ret; | ||
688 | int i; | ||
689 | |||
690 | 5 | seg->segment_count = 0; | |
691 |
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5 | if (!seg->write_header_trailer) |
692 | ✗ | seg->individual_header_trailer = 0; | |
693 | |||
694 |
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5 | if (seg->header_filename) { |
695 | 1 | seg->write_header_trailer = 1; | |
696 | 1 | seg->individual_header_trailer = 0; | |
697 | } | ||
698 | |||
699 |
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5 | if (seg->initial_offset > 0) { |
700 | ✗ | av_log(s, AV_LOG_WARNING, "NOTE: the option initial_offset is deprecated," | |
701 | "you can use output_ts_offset instead of it\n"); | ||
702 | } | ||
703 | |||
704 |
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5 | if ((seg->time != 2000000) + !!seg->times_str + !!seg->frames_str > 1) { |
705 | ✗ | av_log(s, AV_LOG_ERROR, | |
706 | "segment_time, segment_times, and segment_frames options " | ||
707 | "are mutually exclusive, select just one of them\n"); | ||
708 | ✗ | return AVERROR(EINVAL); | |
709 | } | ||
710 | |||
711 |
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5 | if (seg->times_str || seg->frames_str) |
712 | ✗ | seg->min_seg_duration = 0; | |
713 | |||
714 |
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5 | if (seg->times_str) { |
715 | ✗ | if ((ret = parse_times(s, &seg->times, &seg->nb_times, seg->times_str)) < 0) | |
716 | ✗ | return ret; | |
717 |
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5 | } else if (seg->frames_str) { |
718 | ✗ | if ((ret = parse_frames(s, &seg->frames, &seg->nb_frames, seg->frames_str)) < 0) | |
719 | ✗ | return ret; | |
720 | } else { | ||
721 |
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5 | if (seg->use_clocktime) { |
722 | ✗ | if (seg->time <= 0) { | |
723 | ✗ | av_log(s, AV_LOG_ERROR, "Invalid negative segment_time with segment_atclocktime option set\n"); | |
724 | ✗ | return AVERROR(EINVAL); | |
725 | } | ||
726 | ✗ | seg->clocktime_offset = seg->time - (seg->clocktime_offset % seg->time); | |
727 | } | ||
728 |
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5 | if (seg->min_seg_duration > seg->time) { |
729 | ✗ | av_log(s, AV_LOG_ERROR, "min_seg_duration cannot be greater than segment_time\n"); | |
730 | ✗ | return AVERROR(EINVAL); | |
731 | } | ||
732 | } | ||
733 | |||
734 |
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5 | if (seg->list) { |
735 |
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4 | if (seg->list_type == LIST_TYPE_UNDEFINED) { |
736 |
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4 | if (av_match_ext(seg->list, "csv" )) seg->list_type = LIST_TYPE_CSV; |
737 |
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4 | else if (av_match_ext(seg->list, "ext" )) seg->list_type = LIST_TYPE_EXT; |
738 |
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4 | else if (av_match_ext(seg->list, "m3u8")) seg->list_type = LIST_TYPE_M3U8; |
739 | ✗ | else if (av_match_ext(seg->list, "ffcat,ffconcat")) seg->list_type = LIST_TYPE_FFCONCAT; | |
740 | ✗ | else seg->list_type = LIST_TYPE_FLAT; | |
741 | } | ||
742 |
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4 | if (!seg->list_size && seg->list_type != LIST_TYPE_M3U8) { |
743 | ✗ | if ((ret = segment_list_open(s)) < 0) | |
744 | ✗ | return ret; | |
745 | } else { | ||
746 | 4 | const char *proto = avio_find_protocol_name(seg->list); | |
747 |
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4 | seg->use_rename = proto && !strcmp(proto, "file"); |
748 | } | ||
749 | } | ||
750 | |||
751 |
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5 | if (seg->list_type == LIST_TYPE_EXT) |
752 | ✗ | av_log(s, AV_LOG_WARNING, "'ext' list type option is deprecated in favor of 'csv'\n"); | |
753 | |||
754 |
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5 | if ((ret = select_reference_stream(s)) < 0) |
755 | ✗ | return ret; | |
756 | 5 | av_log(s, AV_LOG_VERBOSE, "Selected stream id:%d type:%s\n", | |
757 | seg->reference_stream_index, | ||
758 | 5 | av_get_media_type_string(s->streams[seg->reference_stream_index]->codecpar->codec_type)); | |
759 | |||
760 | 5 | seg->reference_stream_first_pts = AV_NOPTS_VALUE; | |
761 | |||
762 | 5 | seg->oformat = av_guess_format(seg->format, s->url, NULL); | |
763 | |||
764 |
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5 | if (!seg->oformat) |
765 | ✗ | return AVERROR_MUXER_NOT_FOUND; | |
766 |
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5 | if (seg->oformat->flags & AVFMT_NOFILE) { |
767 | ✗ | av_log(s, AV_LOG_ERROR, "format %s not supported.\n", | |
768 | ✗ | seg->oformat->name); | |
769 | ✗ | return AVERROR(EINVAL); | |
770 | } | ||
771 | |||
772 |
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5 | if ((ret = segment_mux_init(s)) < 0) |
773 | ✗ | return ret; | |
774 | |||
775 |
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5 | if ((ret = set_segment_filename(s)) < 0) |
776 | ✗ | return ret; | |
777 | 5 | oc = seg->avf; | |
778 | |||
779 |
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5 | if (seg->write_header_trailer) { |
780 |
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5 | if ((ret = s->io_open(s, &oc->pb, |
781 |
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5 | seg->header_filename ? seg->header_filename : oc->url, |
782 | AVIO_FLAG_WRITE, NULL)) < 0) { | ||
783 | ✗ | av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->url); | |
784 | ✗ | return ret; | |
785 | } | ||
786 |
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5 | if (!seg->individual_header_trailer) |
787 | 1 | oc->pb->seekable = 0; | |
788 | } else { | ||
789 | ✗ | if ((ret = open_null_ctx(&oc->pb)) < 0) | |
790 | ✗ | return ret; | |
791 | ✗ | seg->is_nullctx = 1; | |
792 | } | ||
793 | |||
794 | 5 | av_dict_copy(&options, seg->format_options, 0); | |
795 | 5 | av_dict_set(&options, "fflags", "-autobsf", 0); | |
796 | 5 | ret = avformat_init_output(oc, &options); | |
797 |
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5 | if (av_dict_count(options)) { |
798 | ✗ | av_log(s, AV_LOG_ERROR, | |
799 | "Some of the provided format options are not recognized\n"); | ||
800 | ✗ | av_dict_free(&options); | |
801 | ✗ | return AVERROR(EINVAL); | |
802 | } | ||
803 | 5 | av_dict_free(&options); | |
804 | |||
805 |
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5 | if (ret < 0) { |
806 | ✗ | return ret; | |
807 | } | ||
808 | 5 | seg->segment_frame_count = 0; | |
809 | |||
810 |
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5 | av_assert0(s->nb_streams == oc->nb_streams); |
811 |
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|
5 | if (ret == AVSTREAM_INIT_IN_WRITE_HEADER) { |
812 | ✗ | ret = avformat_write_header(oc, NULL); | |
813 | ✗ | if (ret < 0) | |
814 | ✗ | return ret; | |
815 | ✗ | seg->header_written = 1; | |
816 | } | ||
817 | |||
818 |
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10 | for (i = 0; i < s->nb_streams; i++) { |
819 | 5 | AVStream *inner_st = oc->streams[i]; | |
820 | 5 | AVStream *outer_st = s->streams[i]; | |
821 | 5 | avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den); | |
822 | } | ||
823 | |||
824 |
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5 | if (oc->avoid_negative_ts > 0 && s->avoid_negative_ts < 0) |
825 | 5 | s->avoid_negative_ts = 1; | |
826 | |||
827 | 5 | return ret; | |
828 | } | ||
829 | |||
830 | 5 | static int seg_write_header(AVFormatContext *s) | |
831 | { | ||
832 | 5 | SegmentContext *seg = s->priv_data; | |
833 | 5 | AVFormatContext *oc = seg->avf; | |
834 | int ret; | ||
835 | |||
836 |
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5 | if (!seg->header_written) { |
837 | 5 | ret = avformat_write_header(oc, NULL); | |
838 |
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5 | if (ret < 0) |
839 | ✗ | return ret; | |
840 | } | ||
841 | |||
842 |
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5 | if (!seg->write_header_trailer || seg->header_filename) { |
843 |
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1 | if (seg->header_filename) { |
844 | 1 | av_write_frame(oc, NULL); | |
845 | 1 | ff_format_io_close(oc, &oc->pb); | |
846 | } else { | ||
847 | ✗ | close_null_ctxp(&oc->pb); | |
848 | ✗ | seg->is_nullctx = 0; | |
849 | } | ||
850 |
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1 | if ((ret = oc->io_open(oc, &oc->pb, oc->url, AVIO_FLAG_WRITE, NULL)) < 0) |
851 | ✗ | return ret; | |
852 |
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1 | if (!seg->individual_header_trailer) |
853 | 1 | oc->pb->seekable = 0; | |
854 | } | ||
855 | |||
856 | 5 | return 0; | |
857 | } | ||
858 | |||
859 | 1726 | static int seg_write_packet(AVFormatContext *s, AVPacket *pkt) | |
860 | { | ||
861 | 1726 | SegmentContext *seg = s->priv_data; | |
862 | 1726 | AVStream *st = s->streams[pkt->stream_index]; | |
863 | 1726 | int64_t end_pts = INT64_MAX, offset, pkt_pts_avtb; | |
864 | 1726 | int start_frame = INT_MAX; | |
865 | int ret; | ||
866 | struct tm ti; | ||
867 | int64_t usecs; | ||
868 | int64_t wrapped_val; | ||
869 | |||
870 |
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1726 | if (!seg->avf || !seg->avf->pb) |
871 | ✗ | return AVERROR(EINVAL); | |
872 | |||
873 |
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1726 | if (!st->codecpar->extradata_size) { |
874 | size_t pkt_extradata_size; | ||
875 | 1532 | uint8_t *pkt_extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &pkt_extradata_size); | |
876 |
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1532 | if (pkt_extradata && pkt_extradata_size > 0) { |
877 | ✗ | ret = ff_alloc_extradata(st->codecpar, pkt_extradata_size); | |
878 | ✗ | if (ret < 0) { | |
879 | ✗ | av_log(s, AV_LOG_WARNING, "Unable to add extradata to stream. Output segments may be invalid.\n"); | |
880 | ✗ | goto calc_times; | |
881 | } | ||
882 | ✗ | memcpy(st->codecpar->extradata, pkt_extradata, pkt_extradata_size); | |
883 | } | ||
884 | } | ||
885 | |||
886 | 1726 | calc_times: | |
887 |
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|
1726 | if (seg->times) { |
888 | ✗ | end_pts = seg->segment_count < seg->nb_times ? | |
889 | ✗ | seg->times[seg->segment_count] : INT64_MAX; | |
890 |
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|
1726 | } else if (seg->frames) { |
891 | ✗ | start_frame = seg->segment_count < seg->nb_frames ? | |
892 | ✗ | seg->frames[seg->segment_count] : INT_MAX; | |
893 | } else { | ||
894 |
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1726 | if (seg->use_clocktime) { |
895 | ✗ | int64_t avgt = av_gettime(); | |
896 | ✗ | time_t sec = avgt / 1000000; | |
897 | ✗ | localtime_r(&sec, &ti); | |
898 | ✗ | usecs = (int64_t)(ti.tm_hour * 3600 + ti.tm_min * 60 + ti.tm_sec) * 1000000 + (avgt % 1000000); | |
899 | ✗ | wrapped_val = (usecs + seg->clocktime_offset) % seg->time; | |
900 | ✗ | if (wrapped_val < seg->last_val && wrapped_val < seg->clocktime_wrap_duration) | |
901 | ✗ | seg->cut_pending = 1; | |
902 | ✗ | seg->last_val = wrapped_val; | |
903 | } else { | ||
904 | 1726 | end_pts = seg->time * (seg->segment_count + 1); | |
905 | } | ||
906 | } | ||
907 | |||
908 | ff_dlog(s, "packet stream:%d pts:%s pts_time:%s duration_time:%s is_key:%d frame:%d\n", | ||
909 | pkt->stream_index, av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), | ||
910 | av_ts2timestr(pkt->duration, &st->time_base), | ||
911 | pkt->flags & AV_PKT_FLAG_KEY, | ||
912 | pkt->stream_index == seg->reference_stream_index ? seg->frame_count : -1); | ||
913 | |||
914 |
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1726 | if (seg->reference_stream_first_pts == AV_NOPTS_VALUE && |
915 |
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|
5 | pkt->stream_index == seg->reference_stream_index && |
916 |
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5 | pkt->pts != AV_NOPTS_VALUE) { |
917 | 5 | seg->reference_stream_first_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q); | |
918 | } | ||
919 | |||
920 |
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1726 | if (seg->reference_stream_first_pts != AV_NOPTS_VALUE) { |
921 | 1726 | end_pts += (INT64_MAX - end_pts >= seg->reference_stream_first_pts) ? | |
922 | 1726 | seg->reference_stream_first_pts : | |
923 | INT64_MAX - end_pts; | ||
924 | } | ||
925 | |||
926 |
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1726 | if (pkt->pts != AV_NOPTS_VALUE) |
927 | 1726 | pkt_pts_avtb = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q); | |
928 | |||
929 |
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1726 | if (pkt->stream_index == seg->reference_stream_index && |
930 |
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1726 | (pkt->flags & AV_PKT_FLAG_KEY || seg->break_non_keyframes) && |
931 |
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1606 | (seg->segment_frame_count > 0 || seg->write_empty) && |
932 |
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1601 | (seg->cut_pending || seg->frame_count >= start_frame || |
933 |
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1601 | (pkt->pts != AV_NOPTS_VALUE && |
934 |
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3202 | pkt_pts_avtb - seg->cur_entry.start_pts >= seg->min_seg_duration && |
935 | 1601 | av_compare_ts(pkt->pts, st->time_base, | |
936 | 1601 | end_pts - seg->time_delta, AV_TIME_BASE_Q) >= 0))) { | |
937 | /* sanitize end time in case last packet didn't have a defined duration */ | ||
938 |
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10 | if (seg->cur_entry.last_duration == 0) |
939 | ✗ | seg->cur_entry.end_time = (double)pkt->pts * av_q2d(st->time_base); | |
940 | |||
941 |
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10 | if ((ret = segment_end(s, seg->individual_header_trailer, 0)) < 0) |
942 | ✗ | goto fail; | |
943 | |||
944 |
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|
10 | if ((ret = segment_start(s, seg->individual_header_trailer)) < 0) |
945 | ✗ | goto fail; | |
946 | |||
947 | 10 | seg->cut_pending = 0; | |
948 | 10 | seg->cur_entry.index = seg->segment_idx + seg->segment_idx_wrap * seg->segment_idx_wrap_nb; | |
949 | 10 | seg->cur_entry.start_time = (double)pkt->pts * av_q2d(st->time_base); | |
950 | 10 | seg->cur_entry.start_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q); | |
951 | 10 | seg->cur_entry.end_time = seg->cur_entry.start_time; | |
952 | |||
953 |
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10 | if (seg->times || (!seg->frames && !seg->use_clocktime) && seg->write_empty) |
954 | ✗ | goto calc_times; | |
955 | } | ||
956 | |||
957 |
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1726 | if (pkt->stream_index == seg->reference_stream_index) { |
958 |
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1726 | if (pkt->pts != AV_NOPTS_VALUE) |
959 | 1726 | seg->cur_entry.end_time = | |
960 |
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1726 | FFMAX(seg->cur_entry.end_time, (double)(pkt->pts + pkt->duration) * av_q2d(st->time_base)); |
961 | 1726 | seg->cur_entry.last_duration = pkt->duration; | |
962 | } | ||
963 | |||
964 |
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1726 | if (seg->segment_frame_count == 0) { |
965 | 45 | av_log(s, AV_LOG_VERBOSE, "segment:'%s' starts with packet stream:%d pts:%s pts_time:%s frame:%d\n", | |
966 | 15 | seg->avf->url, pkt->stream_index, | |
967 | 15 | av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), seg->frame_count); | |
968 | } | ||
969 | |||
970 | 1726 | av_log(s, AV_LOG_DEBUG, "stream:%d start_pts_time:%s pts:%s pts_time:%s dts:%s dts_time:%s", | |
971 | pkt->stream_index, | ||
972 | 1726 | av_ts2timestr(seg->cur_entry.start_pts, &AV_TIME_BASE_Q), | |
973 | 1726 | av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), | |
974 | 1726 | av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base)); | |
975 | |||
976 | /* compute new timestamps */ | ||
977 | 1726 | offset = av_rescale_q(seg->initial_offset - (seg->reset_timestamps ? seg->cur_entry.start_pts : 0), | |
978 |
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1726 | AV_TIME_BASE_Q, st->time_base); |
979 |
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1726 | if (pkt->pts != AV_NOPTS_VALUE) |
980 | 1726 | pkt->pts += offset; | |
981 |
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1726 | if (pkt->dts != AV_NOPTS_VALUE) |
982 | 1726 | pkt->dts += offset; | |
983 | |||
984 | 1726 | av_log(s, AV_LOG_DEBUG, " -> pts:%s pts_time:%s dts:%s dts_time:%s\n", | |
985 | 1726 | av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), | |
986 | 1726 | av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base)); | |
987 | |||
988 | 1726 | ret = ff_write_chained(seg->avf, pkt->stream_index, pkt, s, | |
989 |
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1726 | seg->initial_offset || seg->reset_timestamps || |
990 |
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1726 | ffofmt(seg->avf->oformat)->interleave_packet); |
991 | |||
992 | 1726 | fail: | |
993 | /* Use st->index here as the packet returned from ff_write_chained() | ||
994 | * is blank if interleaving has been used. */ | ||
995 |
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1726 | if (st->index == seg->reference_stream_index) { |
996 | 1726 | seg->frame_count++; | |
997 | 1726 | seg->segment_frame_count++; | |
998 | } | ||
999 | |||
1000 | 1726 | return ret; | |
1001 | } | ||
1002 | |||
1003 | 5 | static int seg_write_trailer(struct AVFormatContext *s) | |
1004 | { | ||
1005 | 5 | SegmentContext *seg = s->priv_data; | |
1006 | 5 | AVFormatContext *oc = seg->avf; | |
1007 | int ret; | ||
1008 | |||
1009 |
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5 | if (!oc) |
1010 | ✗ | return 0; | |
1011 | |||
1012 |
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5 | if (!seg->write_header_trailer) { |
1013 | ✗ | if ((ret = segment_end(s, 0, 1)) < 0) | |
1014 | ✗ | return ret; | |
1015 | ✗ | if ((ret = open_null_ctx(&oc->pb)) < 0) | |
1016 | ✗ | return ret; | |
1017 | ✗ | seg->is_nullctx = 1; | |
1018 | ✗ | ret = av_write_trailer(oc); | |
1019 | } else { | ||
1020 | 5 | ret = segment_end(s, 1, 1); | |
1021 | } | ||
1022 | 5 | return ret; | |
1023 | } | ||
1024 | |||
1025 | 5 | static int seg_check_bitstream(AVFormatContext *s, AVStream *st, | |
1026 | const AVPacket *pkt) | ||
1027 | { | ||
1028 | 5 | SegmentContext *seg = s->priv_data; | |
1029 | 5 | AVFormatContext *oc = seg->avf; | |
1030 |
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5 | if (ffofmt(oc->oformat)->check_bitstream) { |
1031 | 5 | AVStream *const ost = oc->streams[st->index]; | |
1032 | 5 | int ret = ffofmt(oc->oformat)->check_bitstream(oc, ost, pkt); | |
1033 |
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5 | if (ret == 1) { |
1034 | 5 | FFStream *const sti = ffstream(st); | |
1035 | 5 | FFStream *const osti = ffstream(ost); | |
1036 | 5 | sti->bsfc = osti->bsfc; | |
1037 | 5 | osti->bsfc = NULL; | |
1038 | } | ||
1039 | 5 | return ret; | |
1040 | } | ||
1041 | ✗ | return 1; | |
1042 | } | ||
1043 | |||
1044 | #define OFFSET(x) offsetof(SegmentContext, x) | ||
1045 | #define E AV_OPT_FLAG_ENCODING_PARAM | ||
1046 | static const AVOption options[] = { | ||
1047 | { "reference_stream", "set reference stream", OFFSET(reference_stream_specifier), AV_OPT_TYPE_STRING, {.str = "auto"}, 0, 0, E }, | ||
1048 | { "segment_format", "set container format used for the segments", OFFSET(format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, | ||
1049 | { "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 }, | ||
1050 | { "segment_list", "set the segment list filename", OFFSET(list), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, | ||
1051 | { "segment_header_filename", "write a single file containing the header", OFFSET(header_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, | ||
1052 | |||
1053 | { "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"}, | ||
1054 | { "cache", "allow list caching", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_LIST_FLAG_CACHE }, INT_MIN, INT_MAX, E, .unit = "list_flags"}, | ||
1055 | { "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"}, | ||
1056 | |||
1057 | { "segment_list_size", "set the maximum number of playlist entries", OFFSET(list_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, | ||
1058 | |||
1059 | { "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" }, | ||
1060 | { "flat", "flat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FLAT }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1061 | { "csv", "csv format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_CSV }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1062 | { "ext", "extended format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_EXT }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1063 | { "ffconcat", "ffconcat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FFCONCAT }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1064 | { "m3u8", "M3U8 format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1065 | { "hls", "Apple HTTP Live Streaming compatible", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, .unit = "list_type" }, | ||
1066 | |||
1067 | { "segment_atclocktime", "set segment to be cut at clocktime", OFFSET(use_clocktime), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E}, | ||
1068 | { "segment_clocktime_offset", "set segment clocktime offset", OFFSET(clocktime_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, 86400000000LL, E}, | ||
1069 | { "segment_clocktime_wrap_duration", "set segment clocktime wrapping duration", OFFSET(clocktime_wrap_duration), AV_OPT_TYPE_DURATION, {.i64 = INT64_MAX}, 0, INT64_MAX, E}, | ||
1070 | { "segment_time", "set segment duration", OFFSET(time),AV_OPT_TYPE_DURATION, {.i64 = 2000000}, INT64_MIN, INT64_MAX, E }, | ||
1071 | { "segment_time_delta","set approximation value used for the segment times", OFFSET(time_delta), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E }, | ||
1072 | { "min_seg_duration", "set minimum segment duration", OFFSET(min_seg_duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, E }, | ||
1073 | { "segment_times", "set segment split time points", OFFSET(times_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E }, | ||
1074 | { "segment_frames", "set segment split frame numbers", OFFSET(frames_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E }, | ||
1075 | { "segment_wrap", "set number after which the index wraps", OFFSET(segment_idx_wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, | ||
1076 | { "segment_list_entry_prefix", "set base url prefix for segments", OFFSET(entry_prefix), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, | ||
1077 | { "segment_start_number", "set the sequence number of the first segment", OFFSET(segment_idx), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, | ||
1078 | { "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 }, | ||
1079 | { "strftime", "set filename expansion with strftime at segment creation", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, | ||
1080 | { "increment_tc", "increment timecode between each segment", OFFSET(increment_tc), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, | ||
1081 | { "break_non_keyframes", "allow breaking segments on non-keyframes", OFFSET(break_non_keyframes), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E }, | ||
1082 | |||
1083 | { "individual_header_trailer", "write header/trailer to each segment", OFFSET(individual_header_trailer), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E }, | ||
1084 | { "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 }, | ||
1085 | { "reset_timestamps", "reset timestamps at the beginning of each segment", OFFSET(reset_timestamps), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E }, | ||
1086 | { "initial_offset", "set initial timestamp offset", OFFSET(initial_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, -INT64_MAX, INT64_MAX, E }, | ||
1087 | { "write_empty_segments", "allow writing empty 'filler' segments", OFFSET(write_empty), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E }, | ||
1088 | { NULL }, | ||
1089 | }; | ||
1090 | |||
1091 | static const AVClass seg_class = { | ||
1092 | .class_name = "(stream) segment muxer", | ||
1093 | .item_name = av_default_item_name, | ||
1094 | .option = options, | ||
1095 | .version = LIBAVUTIL_VERSION_INT, | ||
1096 | }; | ||
1097 | |||
1098 | #if CONFIG_SEGMENT_MUXER | ||
1099 | const FFOutputFormat ff_segment_muxer = { | ||
1100 | .p.name = "segment", | ||
1101 | .p.long_name = NULL_IF_CONFIG_SMALL("segment"), | ||
1102 | .p.flags = AVFMT_NOFILE|AVFMT_GLOBALHEADER, | ||
1103 | .p.priv_class = &seg_class, | ||
1104 | .priv_data_size = sizeof(SegmentContext), | ||
1105 | .init = seg_init, | ||
1106 | .write_header = seg_write_header, | ||
1107 | .write_packet = seg_write_packet, | ||
1108 | .write_trailer = seg_write_trailer, | ||
1109 | .deinit = seg_free, | ||
1110 | .check_bitstream = seg_check_bitstream, | ||
1111 | }; | ||
1112 | #endif | ||
1113 | |||
1114 | #if CONFIG_STREAM_SEGMENT_MUXER | ||
1115 | const FFOutputFormat ff_stream_segment_muxer = { | ||
1116 | .p.name = "stream_segment,ssegment", | ||
1117 | .p.long_name = NULL_IF_CONFIG_SMALL("streaming segment muxer"), | ||
1118 | .p.flags = AVFMT_NOFILE, | ||
1119 | .p.priv_class = &seg_class, | ||
1120 | .priv_data_size = sizeof(SegmentContext), | ||
1121 | .init = seg_init, | ||
1122 | .write_header = seg_write_header, | ||
1123 | .write_packet = seg_write_packet, | ||
1124 | .write_trailer = seg_write_trailer, | ||
1125 | .deinit = seg_free, | ||
1126 | .check_bitstream = seg_check_bitstream, | ||
1127 | }; | ||
1128 | #endif | ||
1129 |