blob: dbadc4fdebb50499489f618c4fd7c0708c012621
1 | /* |
2 | * various utility functions for use within FFmpeg |
3 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
7 | * FFmpeg is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Lesser General Public |
9 | * License as published by the Free Software Foundation; either |
10 | * version 2.1 of the License, or (at your option) any later version. |
11 | * |
12 | * FFmpeg is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | * Lesser General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU Lesser General Public |
18 | * License along with FFmpeg; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | */ |
21 | |
22 | #include "avformat.h" |
23 | #include "avio_internal.h" |
24 | #include "internal.h" |
25 | #include "libavcodec/internal.h" |
26 | #include "libavcodec/raw.h" |
27 | #include "libavcodec/bytestream.h" |
28 | #include "libavutil/opt.h" |
29 | #include "libavutil/dict.h" |
30 | #include "libavutil/internal.h" |
31 | #include "libavutil/pixdesc.h" |
32 | #include "metadata.h" |
33 | #include "id3v2.h" |
34 | #include "libavutil/avassert.h" |
35 | #include "libavutil/avstring.h" |
36 | #include "libavutil/mathematics.h" |
37 | #include "libavutil/parseutils.h" |
38 | #include "libavutil/time.h" |
39 | #include "libavutil/timestamp.h" |
40 | #include "riff.h" |
41 | #include "audiointerleave.h" |
42 | #include "url.h" |
43 | #include <stdarg.h> |
44 | #if CONFIG_NETWORK |
45 | #include "network.h" |
46 | #endif |
47 | |
48 | #undef NDEBUG |
49 | #include <assert.h> |
50 | |
51 | /** |
52 | * @file |
53 | * various utility functions for use within FFmpeg |
54 | */ |
55 | |
56 | unsigned avformat_version(void) |
57 | { |
58 | av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100); |
59 | return LIBAVFORMAT_VERSION_INT; |
60 | } |
61 | |
62 | const char *avformat_configuration(void) |
63 | { |
64 | return FFMPEG_CONFIGURATION; |
65 | } |
66 | |
67 | const char *avformat_license(void) |
68 | { |
69 | #define LICENSE_PREFIX "libavformat license: " |
70 | return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
71 | } |
72 | |
73 | #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48)) |
74 | |
75 | static int is_relative(int64_t ts) { |
76 | return ts > (RELATIVE_TS_BASE - (1LL<<48)); |
77 | } |
78 | |
79 | /** |
80 | * Wrap a given time stamp, if there is an indication for an overflow |
81 | * |
82 | * @param st stream |
83 | * @param timestamp the time stamp to wrap |
84 | * @return resulting time stamp |
85 | */ |
86 | static int64_t wrap_timestamp(AVStream *st, int64_t timestamp) |
87 | { |
88 | if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE && |
89 | st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) { |
90 | if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET && |
91 | timestamp < st->pts_wrap_reference) |
92 | return timestamp + (1ULL<<st->pts_wrap_bits); |
93 | else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET && |
94 | timestamp >= st->pts_wrap_reference) |
95 | return timestamp - (1ULL<<st->pts_wrap_bits); |
96 | } |
97 | return timestamp; |
98 | } |
99 | |
100 | MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate) |
101 | MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec) |
102 | MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec) |
103 | MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec) |
104 | |
105 | static AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id) |
106 | { |
107 | if (st->codec->codec) |
108 | return st->codec->codec; |
109 | |
110 | switch(st->codec->codec_type){ |
111 | case AVMEDIA_TYPE_VIDEO: |
112 | if(s->video_codec) return s->video_codec; |
113 | break; |
114 | case AVMEDIA_TYPE_AUDIO: |
115 | if(s->audio_codec) return s->audio_codec; |
116 | break; |
117 | case AVMEDIA_TYPE_SUBTITLE: |
118 | if(s->subtitle_codec) return s->subtitle_codec; |
119 | break; |
120 | } |
121 | |
122 | return avcodec_find_decoder(codec_id); |
123 | } |
124 | |
125 | int av_format_get_probe_score(const AVFormatContext *s) |
126 | { |
127 | return s->probe_score; |
128 | } |
129 | |
130 | /* an arbitrarily chosen "sane" max packet size -- 50M */ |
131 | #define SANE_CHUNK_SIZE (50000000) |
132 | |
133 | int ffio_limit(AVIOContext *s, int size) |
134 | { |
135 | if(s->maxsize>=0){ |
136 | int64_t remaining= s->maxsize - avio_tell(s); |
137 | if(remaining < size){ |
138 | int64_t newsize= avio_size(s); |
139 | if(!s->maxsize || s->maxsize<newsize) |
140 | s->maxsize= newsize - !newsize; |
141 | remaining= s->maxsize - avio_tell(s); |
142 | remaining= FFMAX(remaining, 0); |
143 | } |
144 | |
145 | if(s->maxsize>=0 && remaining+1 < size){ |
146 | av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1); |
147 | size= remaining+1; |
148 | } |
149 | } |
150 | return size; |
151 | } |
152 | |
153 | /* |
154 | * Read the data in sane-sized chunks and append to pkt. |
155 | * Return the number of bytes read or an error. |
156 | */ |
157 | static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size) |
158 | { |
159 | int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos |
160 | int orig_size = pkt->size; |
161 | int ret; |
162 | |
163 | do { |
164 | int prev_size = pkt->size; |
165 | int read_size; |
166 | |
167 | /* |
168 | * When the caller requests a lot of data, limit it to the amount left |
169 | * in file or SANE_CHUNK_SIZE when it is not known |
170 | */ |
171 | read_size = size; |
172 | if (read_size > SANE_CHUNK_SIZE/10) { |
173 | read_size = ffio_limit(s, read_size); |
174 | // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE |
175 | if (s->maxsize < 0) |
176 | read_size = FFMIN(read_size, SANE_CHUNK_SIZE); |
177 | } |
178 | |
179 | ret = av_grow_packet(pkt, read_size); |
180 | if (ret < 0) |
181 | break; |
182 | |
183 | ret = avio_read(s, pkt->data + prev_size, read_size); |
184 | if (ret != read_size) { |
185 | av_shrink_packet(pkt, prev_size + FFMAX(ret, 0)); |
186 | break; |
187 | } |
188 | |
189 | size -= read_size; |
190 | } while (size > 0); |
191 | if (size > 0) |
192 | pkt->flags |= AV_PKT_FLAG_CORRUPT; |
193 | |
194 | pkt->pos = orig_pos; |
195 | if (!pkt->size) |
196 | av_free_packet(pkt); |
197 | return pkt->size > orig_size ? pkt->size - orig_size : ret; |
198 | } |
199 | |
200 | int av_get_packet(AVIOContext *s, AVPacket *pkt, int size) |
201 | { |
202 | av_init_packet(pkt); |
203 | pkt->data = NULL; |
204 | pkt->size = 0; |
205 | pkt->pos = avio_tell(s); |
206 | |
207 | return append_packet_chunked(s, pkt, size); |
208 | } |
209 | |
210 | int av_append_packet(AVIOContext *s, AVPacket *pkt, int size) |
211 | { |
212 | if (!pkt->size) |
213 | return av_get_packet(s, pkt, size); |
214 | return append_packet_chunked(s, pkt, size); |
215 | } |
216 | |
217 | |
218 | int av_filename_number_test(const char *filename) |
219 | { |
220 | char buf[1024]; |
221 | return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0); |
222 | } |
223 | |
224 | AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret) |
225 | { |
226 | AVProbeData lpd = *pd; |
227 | AVInputFormat *fmt1 = NULL, *fmt; |
228 | int score, nodat = 0, score_max=0; |
229 | const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE]; |
230 | |
231 | if (!lpd.buf) |
232 | lpd.buf = zerobuffer; |
233 | |
234 | if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) { |
235 | int id3len = ff_id3v2_tag_len(lpd.buf); |
236 | if (lpd.buf_size > id3len + 16) { |
237 | lpd.buf += id3len; |
238 | lpd.buf_size -= id3len; |
239 | }else |
240 | nodat = 1; |
241 | } |
242 | |
243 | fmt = NULL; |
244 | while ((fmt1 = av_iformat_next(fmt1))) { |
245 | if (!is_opened == !(fmt1->flags & AVFMT_NOFILE)) |
246 | continue; |
247 | score = 0; |
248 | if (fmt1->read_probe) { |
249 | score = fmt1->read_probe(&lpd); |
250 | if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions)) |
251 | score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1); |
252 | } else if (fmt1->extensions) { |
253 | if (av_match_ext(lpd.filename, fmt1->extensions)) { |
254 | score = AVPROBE_SCORE_EXTENSION; |
255 | } |
256 | } |
257 | if (score > score_max) { |
258 | score_max = score; |
259 | fmt = fmt1; |
260 | }else if (score == score_max) |
261 | fmt = NULL; |
262 | } |
263 | if(nodat) |
264 | score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max); |
265 | *score_ret= score_max; |
266 | |
267 | return fmt; |
268 | } |
269 | |
270 | AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max) |
271 | { |
272 | int score_ret; |
273 | AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret); |
274 | if(score_ret > *score_max){ |
275 | *score_max= score_ret; |
276 | return fmt; |
277 | }else |
278 | return NULL; |
279 | } |
280 | |
281 | AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){ |
282 | int score=0; |
283 | return av_probe_input_format2(pd, is_opened, &score); |
284 | } |
285 | |
286 | static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd) |
287 | { |
288 | static const struct { |
289 | const char *name; enum AVCodecID id; enum AVMediaType type; |
290 | } fmt_id_type[] = { |
291 | { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO }, |
292 | { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO }, |
293 | { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO }, |
294 | { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO }, |
295 | { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO }, |
296 | { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO }, |
297 | { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO }, |
298 | { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO }, |
299 | { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO }, |
300 | { 0 } |
301 | }; |
302 | int score; |
303 | AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score); |
304 | |
305 | if (fmt && st->request_probe <= score) { |
306 | int i; |
307 | av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n", |
308 | pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score); |
309 | for (i = 0; fmt_id_type[i].name; i++) { |
310 | if (!strcmp(fmt->name, fmt_id_type[i].name)) { |
311 | st->codec->codec_id = fmt_id_type[i].id; |
312 | st->codec->codec_type = fmt_id_type[i].type; |
313 | break; |
314 | } |
315 | } |
316 | } |
317 | return score; |
318 | } |
319 | |
320 | /************************************************************/ |
321 | /* input media file */ |
322 | |
323 | int av_demuxer_open(AVFormatContext *ic){ |
324 | int err; |
325 | |
326 | if (ic->iformat->read_header) { |
327 | err = ic->iformat->read_header(ic); |
328 | if (err < 0) |
329 | return err; |
330 | } |
331 | |
332 | if (ic->pb && !ic->data_offset) |
333 | ic->data_offset = avio_tell(ic->pb); |
334 | |
335 | return 0; |
336 | } |
337 | |
338 | |
339 | int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt, |
340 | const char *filename, void *logctx, |
341 | unsigned int offset, unsigned int max_probe_size) |
342 | { |
343 | AVProbeData pd = { filename ? filename : "", NULL, -offset }; |
344 | unsigned char *buf = NULL; |
345 | uint8_t *mime_type; |
346 | int ret = 0, probe_size, buf_offset = 0; |
347 | int score = 0; |
348 | |
349 | if (!max_probe_size) { |
350 | max_probe_size = PROBE_BUF_MAX; |
351 | } else if (max_probe_size > PROBE_BUF_MAX) { |
352 | max_probe_size = PROBE_BUF_MAX; |
353 | } else if (max_probe_size < PROBE_BUF_MIN) { |
354 | av_log(logctx, AV_LOG_ERROR, |
355 | "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN); |
356 | return AVERROR(EINVAL); |
357 | } |
358 | |
359 | if (offset >= max_probe_size) { |
360 | return AVERROR(EINVAL); |
361 | } |
362 | |
363 | if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) { |
364 | if (!av_strcasecmp(mime_type, "audio/aacp")) { |
365 | *fmt = av_find_input_format("aac"); |
366 | } |
367 | av_freep(&mime_type); |
368 | } |
369 | |
370 | for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt; |
371 | probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) { |
372 | |
373 | if (probe_size < offset) { |
374 | continue; |
375 | } |
376 | score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0; |
377 | |
378 | /* read probe data */ |
379 | if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0) |
380 | return ret; |
381 | if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) { |
382 | /* fail if error was not end of file, otherwise, lower score */ |
383 | if (ret != AVERROR_EOF) { |
384 | av_free(buf); |
385 | return ret; |
386 | } |
387 | score = 0; |
388 | ret = 0; /* error was end of file, nothing read */ |
389 | } |
390 | pd.buf_size = buf_offset += ret; |
391 | pd.buf = &buf[offset]; |
392 | |
393 | memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE); |
394 | |
395 | /* guess file format */ |
396 | *fmt = av_probe_input_format2(&pd, 1, &score); |
397 | if(*fmt){ |
398 | if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration |
399 | av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score); |
400 | }else |
401 | av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score); |
402 | } |
403 | } |
404 | |
405 | if (!*fmt) { |
406 | av_free(buf); |
407 | return AVERROR_INVALIDDATA; |
408 | } |
409 | |
410 | /* rewind. reuse probe buffer to avoid seeking */ |
411 | ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size); |
412 | |
413 | return ret < 0 ? ret : score; |
414 | } |
415 | |
416 | int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt, |
417 | const char *filename, void *logctx, |
418 | unsigned int offset, unsigned int max_probe_size) |
419 | { |
420 | int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size); |
421 | return ret < 0 ? ret : 0; |
422 | } |
423 | |
424 | |
425 | /* open input file and probe the format if necessary */ |
426 | static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options) |
427 | { |
428 | int ret; |
429 | AVProbeData pd = {filename, NULL, 0}; |
430 | int score = AVPROBE_SCORE_RETRY; |
431 | |
432 | if (s->pb) { |
433 | s->flags |= AVFMT_FLAG_CUSTOM_IO; |
434 | if (!s->iformat) |
435 | return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize); |
436 | else if (s->iformat->flags & AVFMT_NOFILE) |
437 | av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and " |
438 | "will be ignored with AVFMT_NOFILE format.\n"); |
439 | return 0; |
440 | } |
441 | |
442 | if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) || |
443 | (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score)))) |
444 | return score; |
445 | |
446 | if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags, |
447 | &s->interrupt_callback, options)) < 0) |
448 | return ret; |
449 | if (s->iformat) |
450 | return 0; |
451 | return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize); |
452 | } |
453 | |
454 | static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt, |
455 | AVPacketList **plast_pktl){ |
456 | AVPacketList *pktl = av_mallocz(sizeof(AVPacketList)); |
457 | if (!pktl) |
458 | return NULL; |
459 | |
460 | if (*packet_buffer) |
461 | (*plast_pktl)->next = pktl; |
462 | else |
463 | *packet_buffer = pktl; |
464 | |
465 | /* add the packet in the buffered packet list */ |
466 | *plast_pktl = pktl; |
467 | pktl->pkt= *pkt; |
468 | return &pktl->pkt; |
469 | } |
470 | |
471 | int avformat_queue_attached_pictures(AVFormatContext *s) |
472 | { |
473 | int i; |
474 | for (i = 0; i < s->nb_streams; i++) |
475 | if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC && |
476 | s->streams[i]->discard < AVDISCARD_ALL) { |
477 | AVPacket copy = s->streams[i]->attached_pic; |
478 | copy.buf = av_buffer_ref(copy.buf); |
479 | if (!copy.buf) |
480 | return AVERROR(ENOMEM); |
481 | |
482 | add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end); |
483 | } |
484 | return 0; |
485 | } |
486 | |
487 | int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options) |
488 | { |
489 | AVFormatContext *s = *ps; |
490 | int ret = 0; |
491 | AVDictionary *tmp = NULL; |
492 | ID3v2ExtraMeta *id3v2_extra_meta = NULL; |
493 | |
494 | if (!s && !(s = avformat_alloc_context())) |
495 | return AVERROR(ENOMEM); |
496 | if (!s->av_class){ |
497 | av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n"); |
498 | return AVERROR(EINVAL); |
499 | } |
500 | if (fmt) |
501 | s->iformat = fmt; |
502 | |
503 | if (options) |
504 | av_dict_copy(&tmp, *options, 0); |
505 | |
506 | if ((ret = av_opt_set_dict(s, &tmp)) < 0) |
507 | goto fail; |
508 | |
509 | if ((ret = init_input(s, filename, &tmp)) < 0) |
510 | goto fail; |
511 | s->probe_score = ret; |
512 | avio_skip(s->pb, s->skip_initial_bytes); |
513 | |
514 | /* check filename in case an image number is expected */ |
515 | if (s->iformat->flags & AVFMT_NEEDNUMBER) { |
516 | if (!av_filename_number_test(filename)) { |
517 | ret = AVERROR(EINVAL); |
518 | goto fail; |
519 | } |
520 | } |
521 | |
522 | s->duration = s->start_time = AV_NOPTS_VALUE; |
523 | av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename)); |
524 | |
525 | /* allocate private data */ |
526 | if (s->iformat->priv_data_size > 0) { |
527 | if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) { |
528 | ret = AVERROR(ENOMEM); |
529 | goto fail; |
530 | } |
531 | if (s->iformat->priv_class) { |
532 | *(const AVClass**)s->priv_data = s->iformat->priv_class; |
533 | av_opt_set_defaults(s->priv_data); |
534 | if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0) |
535 | goto fail; |
536 | } |
537 | } |
538 | |
539 | /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */ |
540 | if (s->pb) |
541 | ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta); |
542 | |
543 | if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header) |
544 | if ((ret = s->iformat->read_header(s)) < 0) |
545 | goto fail; |
546 | |
547 | if (id3v2_extra_meta) { |
548 | if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") || |
549 | !strcmp(s->iformat->name, "tta")) { |
550 | if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0) |
551 | goto fail; |
552 | } else |
553 | av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n"); |
554 | } |
555 | ff_id3v2_free_extra_meta(&id3v2_extra_meta); |
556 | |
557 | if ((ret = avformat_queue_attached_pictures(s)) < 0) |
558 | goto fail; |
559 | |
560 | if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset) |
561 | s->data_offset = avio_tell(s->pb); |
562 | |
563 | s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE; |
564 | |
565 | if (options) { |
566 | av_dict_free(options); |
567 | *options = tmp; |
568 | } |
569 | *ps = s; |
570 | return 0; |
571 | |
572 | fail: |
573 | ff_id3v2_free_extra_meta(&id3v2_extra_meta); |
574 | av_dict_free(&tmp); |
575 | if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO)) |
576 | avio_close(s->pb); |
577 | avformat_free_context(s); |
578 | *ps = NULL; |
579 | return ret; |
580 | } |
581 | |
582 | /*******************************************************/ |
583 | |
584 | static void force_codec_ids(AVFormatContext *s, AVStream *st) |
585 | { |
586 | switch(st->codec->codec_type){ |
587 | case AVMEDIA_TYPE_VIDEO: |
588 | if(s->video_codec_id) st->codec->codec_id= s->video_codec_id; |
589 | break; |
590 | case AVMEDIA_TYPE_AUDIO: |
591 | if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id; |
592 | break; |
593 | case AVMEDIA_TYPE_SUBTITLE: |
594 | if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id; |
595 | break; |
596 | } |
597 | } |
598 | |
599 | static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt) |
600 | { |
601 | if(st->request_probe>0){ |
602 | AVProbeData *pd = &st->probe_data; |
603 | int end; |
604 | av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets); |
605 | --st->probe_packets; |
606 | |
607 | if (pkt) { |
608 | uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE); |
609 | if(!new_buf) { |
610 | av_log(s, AV_LOG_WARNING, |
611 | "Failed to reallocate probe buffer for stream %d\n", |
612 | st->index); |
613 | goto no_packet; |
614 | } |
615 | pd->buf = new_buf; |
616 | memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size); |
617 | pd->buf_size += pkt->size; |
618 | memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE); |
619 | } else { |
620 | no_packet: |
621 | st->probe_packets = 0; |
622 | if (!pd->buf_size) { |
623 | av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n", |
624 | st->index); |
625 | } |
626 | } |
627 | |
628 | end= s->raw_packet_buffer_remaining_size <= 0 |
629 | || st->probe_packets<=0; |
630 | |
631 | if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){ |
632 | int score= set_codec_from_probe_data(s, st, pd); |
633 | if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY) |
634 | || end){ |
635 | pd->buf_size=0; |
636 | av_freep(&pd->buf); |
637 | st->request_probe= -1; |
638 | if(st->codec->codec_id != AV_CODEC_ID_NONE){ |
639 | av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index); |
640 | }else |
641 | av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index); |
642 | } |
643 | force_codec_ids(s, st); |
644 | } |
645 | } |
646 | return 0; |
647 | } |
648 | |
649 | int ff_read_packet(AVFormatContext *s, AVPacket *pkt) |
650 | { |
651 | int ret, i, err; |
652 | AVStream *st; |
653 | |
654 | for(;;){ |
655 | AVPacketList *pktl = s->raw_packet_buffer; |
656 | |
657 | if (pktl) { |
658 | *pkt = pktl->pkt; |
659 | st = s->streams[pkt->stream_index]; |
660 | if (s->raw_packet_buffer_remaining_size <= 0) { |
661 | if ((err = probe_codec(s, st, NULL)) < 0) |
662 | return err; |
663 | } |
664 | if(st->request_probe <= 0){ |
665 | s->raw_packet_buffer = pktl->next; |
666 | s->raw_packet_buffer_remaining_size += pkt->size; |
667 | av_free(pktl); |
668 | return 0; |
669 | } |
670 | } |
671 | |
672 | pkt->data = NULL; |
673 | pkt->size = 0; |
674 | av_init_packet(pkt); |
675 | ret= s->iformat->read_packet(s, pkt); |
676 | if (ret < 0) { |
677 | if (!pktl || ret == AVERROR(EAGAIN)) |
678 | return ret; |
679 | for (i = 0; i < s->nb_streams; i++) { |
680 | st = s->streams[i]; |
681 | if (st->probe_packets) { |
682 | if ((err = probe_codec(s, st, NULL)) < 0) |
683 | return err; |
684 | } |
685 | av_assert0(st->request_probe <= 0); |
686 | } |
687 | continue; |
688 | } |
689 | |
690 | if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) && |
691 | (pkt->flags & AV_PKT_FLAG_CORRUPT)) { |
692 | av_log(s, AV_LOG_WARNING, |
693 | "Dropped corrupted packet (stream = %d)\n", |
694 | pkt->stream_index); |
695 | av_free_packet(pkt); |
696 | continue; |
697 | } |
698 | |
699 | if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA)) |
700 | av_packet_merge_side_data(pkt); |
701 | |
702 | if(pkt->stream_index >= (unsigned)s->nb_streams){ |
703 | av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index); |
704 | continue; |
705 | } |
706 | |
707 | st= s->streams[pkt->stream_index]; |
708 | pkt->dts = wrap_timestamp(st, pkt->dts); |
709 | pkt->pts = wrap_timestamp(st, pkt->pts); |
710 | |
711 | force_codec_ids(s, st); |
712 | |
713 | /* TODO: audio: time filter; video: frame reordering (pts != dts) */ |
714 | if (s->use_wallclock_as_timestamps) |
715 | pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base); |
716 | |
717 | if(!pktl && st->request_probe <= 0) |
718 | return ret; |
719 | |
720 | add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end); |
721 | s->raw_packet_buffer_remaining_size -= pkt->size; |
722 | |
723 | if ((err = probe_codec(s, st, pkt)) < 0) |
724 | return err; |
725 | } |
726 | } |
727 | |
728 | #if FF_API_READ_PACKET |
729 | int av_read_packet(AVFormatContext *s, AVPacket *pkt) |
730 | { |
731 | return ff_read_packet(s, pkt); |
732 | } |
733 | #endif |
734 | |
735 | |
736 | /**********************************************************/ |
737 | |
738 | static int determinable_frame_size(AVCodecContext *avctx) |
739 | { |
740 | if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/ |
741 | avctx->codec_id == AV_CODEC_ID_MP1 || |
742 | avctx->codec_id == AV_CODEC_ID_MP2 || |
743 | avctx->codec_id == AV_CODEC_ID_MP3/* || |
744 | avctx->codec_id == AV_CODEC_ID_CELT*/) |
745 | return 1; |
746 | return 0; |
747 | } |
748 | |
749 | /** |
750 | * Get the number of samples of an audio frame. Return -1 on error. |
751 | */ |
752 | int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux) |
753 | { |
754 | int frame_size; |
755 | |
756 | /* give frame_size priority if demuxing */ |
757 | if (!mux && enc->frame_size > 1) |
758 | return enc->frame_size; |
759 | |
760 | if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0) |
761 | return frame_size; |
762 | |
763 | /* Fall back on using frame_size if muxing. */ |
764 | if (enc->frame_size > 1) |
765 | return enc->frame_size; |
766 | |
767 | //For WMA we currently have no other means to calculate duration thus we |
768 | //do it here by assuming CBR, which is true for all known cases. |
769 | if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) { |
770 | if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2) |
771 | return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate; |
772 | } |
773 | |
774 | return -1; |
775 | } |
776 | |
777 | |
778 | /** |
779 | * Return the frame duration in seconds. Return 0 if not available. |
780 | */ |
781 | void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st, |
782 | AVCodecParserContext *pc, AVPacket *pkt) |
783 | { |
784 | int frame_size; |
785 | |
786 | *pnum = 0; |
787 | *pden = 0; |
788 | switch(st->codec->codec_type) { |
789 | case AVMEDIA_TYPE_VIDEO: |
790 | if (st->r_frame_rate.num && !pc) { |
791 | *pnum = st->r_frame_rate.den; |
792 | *pden = st->r_frame_rate.num; |
793 | } else if(st->time_base.num*1000LL > st->time_base.den) { |
794 | *pnum = st->time_base.num; |
795 | *pden = st->time_base.den; |
796 | }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){ |
797 | *pnum = st->codec->time_base.num; |
798 | *pden = st->codec->time_base.den; |
799 | if (pc && pc->repeat_pict) { |
800 | if (*pnum > INT_MAX / (1 + pc->repeat_pict)) |
801 | *pden /= 1 + pc->repeat_pict; |
802 | else |
803 | *pnum *= 1 + pc->repeat_pict; |
804 | } |
805 | //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet |
806 | //Thus if we have no parser in such case leave duration undefined. |
807 | if(st->codec->ticks_per_frame>1 && !pc){ |
808 | *pnum = *pden = 0; |
809 | } |
810 | } |
811 | break; |
812 | case AVMEDIA_TYPE_AUDIO: |
813 | frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0); |
814 | if (frame_size <= 0 || st->codec->sample_rate <= 0) |
815 | break; |
816 | *pnum = frame_size; |
817 | *pden = st->codec->sample_rate; |
818 | break; |
819 | default: |
820 | break; |
821 | } |
822 | } |
823 | |
824 | static int is_intra_only(AVCodecContext *enc){ |
825 | const AVCodecDescriptor *desc; |
826 | |
827 | if(enc->codec_type != AVMEDIA_TYPE_VIDEO) |
828 | return 1; |
829 | |
830 | desc = av_codec_get_codec_descriptor(enc); |
831 | if (!desc) { |
832 | desc = avcodec_descriptor_get(enc->codec_id); |
833 | av_codec_set_codec_descriptor(enc, desc); |
834 | } |
835 | if (desc) |
836 | return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY); |
837 | return 0; |
838 | } |
839 | |
840 | static int has_decode_delay_been_guessed(AVStream *st) |
841 | { |
842 | if(st->codec->codec_id != AV_CODEC_ID_H264) return 1; |
843 | if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy |
844 | return 1; |
845 | #if CONFIG_H264_DECODER |
846 | if(st->codec->has_b_frames && |
847 | avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames) |
848 | return 1; |
849 | #endif |
850 | if(st->codec->has_b_frames<3) |
851 | return st->nb_decoded_frames >= 7; |
852 | else if(st->codec->has_b_frames<4) |
853 | return st->nb_decoded_frames >= 18; |
854 | else |
855 | return st->nb_decoded_frames >= 20; |
856 | } |
857 | |
858 | static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl) |
859 | { |
860 | if (pktl->next) |
861 | return pktl->next; |
862 | if (pktl == s->parse_queue_end) |
863 | return s->packet_buffer; |
864 | return NULL; |
865 | } |
866 | |
867 | static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index) |
868 | { |
869 | if (s->correct_ts_overflow && st->pts_wrap_bits < 63 && |
870 | st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) { |
871 | int i; |
872 | |
873 | // reference time stamp should be 60 s before first time stamp |
874 | int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num); |
875 | // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset |
876 | int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) || |
877 | (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ? |
878 | AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET; |
879 | |
880 | AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index); |
881 | |
882 | if (!first_program) { |
883 | int default_stream_index = av_find_default_stream_index(s); |
884 | if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) { |
885 | for (i=0; i<s->nb_streams; i++) { |
886 | s->streams[i]->pts_wrap_reference = pts_wrap_reference; |
887 | s->streams[i]->pts_wrap_behavior = pts_wrap_behavior; |
888 | } |
889 | } |
890 | else { |
891 | st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference; |
892 | st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior; |
893 | } |
894 | } |
895 | else { |
896 | AVProgram *program = first_program; |
897 | while (program) { |
898 | if (program->pts_wrap_reference != AV_NOPTS_VALUE) { |
899 | pts_wrap_reference = program->pts_wrap_reference; |
900 | pts_wrap_behavior = program->pts_wrap_behavior; |
901 | break; |
902 | } |
903 | program = av_find_program_from_stream(s, program, stream_index); |
904 | } |
905 | |
906 | // update every program with differing pts_wrap_reference |
907 | program = first_program; |
908 | while(program) { |
909 | if (program->pts_wrap_reference != pts_wrap_reference) { |
910 | for (i=0; i<program->nb_stream_indexes; i++) { |
911 | s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference; |
912 | s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior; |
913 | } |
914 | |
915 | program->pts_wrap_reference = pts_wrap_reference; |
916 | program->pts_wrap_behavior = pts_wrap_behavior; |
917 | } |
918 | program = av_find_program_from_stream(s, program, stream_index); |
919 | } |
920 | } |
921 | return 1; |
922 | } |
923 | return 0; |
924 | } |
925 | |
926 | static void update_initial_timestamps(AVFormatContext *s, int stream_index, |
927 | int64_t dts, int64_t pts, AVPacket *pkt) |
928 | { |
929 | AVStream *st= s->streams[stream_index]; |
930 | AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer; |
931 | int64_t pts_buffer[MAX_REORDER_DELAY+1]; |
932 | int64_t shift; |
933 | int i, delay; |
934 | |
935 | if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts)) |
936 | return; |
937 | |
938 | delay = st->codec->has_b_frames; |
939 | st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE); |
940 | st->cur_dts= dts; |
941 | shift = st->first_dts - RELATIVE_TS_BASE; |
942 | |
943 | for (i=0; i<MAX_REORDER_DELAY+1; i++) |
944 | pts_buffer[i] = AV_NOPTS_VALUE; |
945 | |
946 | if (is_relative(pts)) |
947 | pts += shift; |
948 | |
949 | for(; pktl; pktl= get_next_pkt(s, st, pktl)){ |
950 | if(pktl->pkt.stream_index != stream_index) |
951 | continue; |
952 | if(is_relative(pktl->pkt.pts)) |
953 | pktl->pkt.pts += shift; |
954 | |
955 | if(is_relative(pktl->pkt.dts)) |
956 | pktl->pkt.dts += shift; |
957 | |
958 | if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE) |
959 | st->start_time= pktl->pkt.pts; |
960 | |
961 | if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){ |
962 | pts_buffer[0]= pktl->pkt.pts; |
963 | for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++) |
964 | FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]); |
965 | if(pktl->pkt.dts == AV_NOPTS_VALUE) |
966 | pktl->pkt.dts= pts_buffer[0]; |
967 | } |
968 | } |
969 | |
970 | if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) { |
971 | // correct first time stamps to negative values |
972 | st->first_dts = wrap_timestamp(st, st->first_dts); |
973 | st->cur_dts = wrap_timestamp(st, st->cur_dts); |
974 | pkt->dts = wrap_timestamp(st, pkt->dts); |
975 | pkt->pts = wrap_timestamp(st, pkt->pts); |
976 | pts = wrap_timestamp(st, pts); |
977 | } |
978 | |
979 | if (st->start_time == AV_NOPTS_VALUE) |
980 | st->start_time = pts; |
981 | } |
982 | |
983 | static void update_initial_durations(AVFormatContext *s, AVStream *st, |
984 | int stream_index, int duration) |
985 | { |
986 | AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer; |
987 | int64_t cur_dts= RELATIVE_TS_BASE; |
988 | |
989 | if(st->first_dts != AV_NOPTS_VALUE){ |
990 | cur_dts= st->first_dts; |
991 | for(; pktl; pktl= get_next_pkt(s, st, pktl)){ |
992 | if(pktl->pkt.stream_index == stream_index){ |
993 | if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration) |
994 | break; |
995 | cur_dts -= duration; |
996 | } |
997 | } |
998 | if(pktl && pktl->pkt.dts != st->first_dts) { |
999 | av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n", |
1000 | av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration); |
1001 | return; |
1002 | } |
1003 | if(!pktl) { |
1004 | av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts)); |
1005 | return; |
1006 | } |
1007 | pktl= s->parse_queue ? s->parse_queue : s->packet_buffer; |
1008 | st->first_dts = cur_dts; |
1009 | }else if(st->cur_dts != RELATIVE_TS_BASE) |
1010 | return; |
1011 | |
1012 | for(; pktl; pktl= get_next_pkt(s, st, pktl)){ |
1013 | if(pktl->pkt.stream_index != stream_index) |
1014 | continue; |
1015 | if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts) |
1016 | && !pktl->pkt.duration){ |
1017 | pktl->pkt.dts= cur_dts; |
1018 | if(!st->codec->has_b_frames) |
1019 | pktl->pkt.pts= cur_dts; |
1020 | // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) |
1021 | pktl->pkt.duration = duration; |
1022 | }else |
1023 | break; |
1024 | cur_dts = pktl->pkt.dts + pktl->pkt.duration; |
1025 | } |
1026 | if(!pktl) |
1027 | st->cur_dts= cur_dts; |
1028 | } |
1029 | |
1030 | static void compute_pkt_fields(AVFormatContext *s, AVStream *st, |
1031 | AVCodecParserContext *pc, AVPacket *pkt) |
1032 | { |
1033 | int num, den, presentation_delayed, delay, i; |
1034 | int64_t offset; |
1035 | |
1036 | if (s->flags & AVFMT_FLAG_NOFILLIN) |
1037 | return; |
1038 | |
1039 | if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE) |
1040 | pkt->dts= AV_NOPTS_VALUE; |
1041 | |
1042 | if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B) |
1043 | //FIXME Set low_delay = 0 when has_b_frames = 1 |
1044 | st->codec->has_b_frames = 1; |
1045 | |
1046 | /* do we have a video B-frame ? */ |
1047 | delay= st->codec->has_b_frames; |
1048 | presentation_delayed = 0; |
1049 | |
1050 | /* XXX: need has_b_frame, but cannot get it if the codec is |
1051 | not initialized */ |
1052 | if (delay && |
1053 | pc && pc->pict_type != AV_PICTURE_TYPE_B) |
1054 | presentation_delayed = 1; |
1055 | |
1056 | if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && |
1057 | st->pts_wrap_bits < 63 && |
1058 | pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) { |
1059 | if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) { |
1060 | pkt->dts -= 1LL<<st->pts_wrap_bits; |
1061 | } else |
1062 | pkt->pts += 1LL<<st->pts_wrap_bits; |
1063 | } |
1064 | |
1065 | // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg) |
1066 | // we take the conservative approach and discard both |
1067 | // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly. |
1068 | if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){ |
1069 | av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts); |
1070 | if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism |
1071 | pkt->dts= AV_NOPTS_VALUE; |
1072 | } |
1073 | |
1074 | if (pkt->duration == 0) { |
1075 | ff_compute_frame_duration(&num, &den, st, pc, pkt); |
1076 | if (den && num) { |
1077 | pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN); |
1078 | } |
1079 | } |
1080 | if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue)) |
1081 | update_initial_durations(s, st, pkt->stream_index, pkt->duration); |
1082 | |
1083 | /* correct timestamps with byte offset if demuxers only have timestamps |
1084 | on packet boundaries */ |
1085 | if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){ |
1086 | /* this will estimate bitrate based on this frame's duration and size */ |
1087 | offset = av_rescale(pc->offset, pkt->duration, pkt->size); |
1088 | if(pkt->pts != AV_NOPTS_VALUE) |
1089 | pkt->pts += offset; |
1090 | if(pkt->dts != AV_NOPTS_VALUE) |
1091 | pkt->dts += offset; |
1092 | } |
1093 | |
1094 | /* This may be redundant, but it should not hurt. */ |
1095 | if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts) |
1096 | presentation_delayed = 1; |
1097 | |
1098 | av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n", |
1099 | presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration); |
1100 | /* interpolate PTS and DTS if they are not present */ |
1101 | //We skip H264 currently because delay and has_b_frames are not reliably set |
1102 | if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){ |
1103 | if (presentation_delayed) { |
1104 | /* DTS = decompression timestamp */ |
1105 | /* PTS = presentation timestamp */ |
1106 | if (pkt->dts == AV_NOPTS_VALUE) |
1107 | pkt->dts = st->last_IP_pts; |
1108 | update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); |
1109 | if (pkt->dts == AV_NOPTS_VALUE) |
1110 | pkt->dts = st->cur_dts; |
1111 | |
1112 | /* this is tricky: the dts must be incremented by the duration |
1113 | of the frame we are displaying, i.e. the last I- or P-frame */ |
1114 | if (st->last_IP_duration == 0) |
1115 | st->last_IP_duration = pkt->duration; |
1116 | if(pkt->dts != AV_NOPTS_VALUE) |
1117 | st->cur_dts = pkt->dts + st->last_IP_duration; |
1118 | st->last_IP_duration = pkt->duration; |
1119 | st->last_IP_pts= pkt->pts; |
1120 | /* cannot compute PTS if not present (we can compute it only |
1121 | by knowing the future */ |
1122 | } else if (pkt->pts != AV_NOPTS_VALUE || |
1123 | pkt->dts != AV_NOPTS_VALUE || |
1124 | pkt->duration ) { |
1125 | int duration = pkt->duration; |
1126 | |
1127 | /* presentation is not delayed : PTS and DTS are the same */ |
1128 | if (pkt->pts == AV_NOPTS_VALUE) |
1129 | pkt->pts = pkt->dts; |
1130 | update_initial_timestamps(s, pkt->stream_index, pkt->pts, |
1131 | pkt->pts, pkt); |
1132 | if (pkt->pts == AV_NOPTS_VALUE) |
1133 | pkt->pts = st->cur_dts; |
1134 | pkt->dts = pkt->pts; |
1135 | if (pkt->pts != AV_NOPTS_VALUE) |
1136 | st->cur_dts = pkt->pts + duration; |
1137 | } |
1138 | } |
1139 | |
1140 | if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){ |
1141 | st->pts_buffer[0]= pkt->pts; |
1142 | for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++) |
1143 | FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]); |
1144 | if(pkt->dts == AV_NOPTS_VALUE) |
1145 | pkt->dts= st->pts_buffer[0]; |
1146 | } |
1147 | if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here |
1148 | update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet |
1149 | } |
1150 | if(pkt->dts > st->cur_dts) |
1151 | st->cur_dts = pkt->dts; |
1152 | |
1153 | av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n", |
1154 | presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts)); |
1155 | |
1156 | /* update flags */ |
1157 | if (is_intra_only(st->codec)) |
1158 | pkt->flags |= AV_PKT_FLAG_KEY; |
1159 | if (pc) |
1160 | pkt->convergence_duration = pc->convergence_duration; |
1161 | } |
1162 | |
1163 | static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end) |
1164 | { |
1165 | while (*pkt_buf) { |
1166 | AVPacketList *pktl = *pkt_buf; |
1167 | *pkt_buf = pktl->next; |
1168 | av_free_packet(&pktl->pkt); |
1169 | av_freep(&pktl); |
1170 | } |
1171 | *pkt_buf_end = NULL; |
1172 | } |
1173 | |
1174 | /** |
1175 | * Parse a packet, add all split parts to parse_queue |
1176 | * |
1177 | * @param pkt packet to parse, NULL when flushing the parser at end of stream |
1178 | */ |
1179 | static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index) |
1180 | { |
1181 | AVPacket out_pkt = { 0 }, flush_pkt = { 0 }; |
1182 | AVStream *st = s->streams[stream_index]; |
1183 | uint8_t *data = pkt ? pkt->data : NULL; |
1184 | int size = pkt ? pkt->size : 0; |
1185 | int ret = 0, got_output = 0; |
1186 | |
1187 | if (!pkt) { |
1188 | av_init_packet(&flush_pkt); |
1189 | pkt = &flush_pkt; |
1190 | got_output = 1; |
1191 | } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) { |
1192 | // preserve 0-size sync packets |
1193 | compute_pkt_fields(s, st, st->parser, pkt); |
1194 | } |
1195 | |
1196 | while (size > 0 || (pkt == &flush_pkt && got_output)) { |
1197 | int len; |
1198 | |
1199 | av_init_packet(&out_pkt); |
1200 | len = av_parser_parse2(st->parser, st->codec, |
1201 | &out_pkt.data, &out_pkt.size, data, size, |
1202 | pkt->pts, pkt->dts, pkt->pos); |
1203 | |
1204 | pkt->pts = pkt->dts = AV_NOPTS_VALUE; |
1205 | pkt->pos = -1; |
1206 | /* increment read pointer */ |
1207 | data += len; |
1208 | size -= len; |
1209 | |
1210 | got_output = !!out_pkt.size; |
1211 | |
1212 | if (!out_pkt.size) |
1213 | continue; |
1214 | |
1215 | if (pkt->side_data) { |
1216 | out_pkt.side_data = pkt->side_data; |
1217 | out_pkt.side_data_elems = pkt->side_data_elems; |
1218 | pkt->side_data = NULL; |
1219 | pkt->side_data_elems = 0; |
1220 | } |
1221 | |
1222 | /* set the duration */ |
1223 | out_pkt.duration = 0; |
1224 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
1225 | if (st->codec->sample_rate > 0) { |
1226 | out_pkt.duration = av_rescale_q_rnd(st->parser->duration, |
1227 | (AVRational){ 1, st->codec->sample_rate }, |
1228 | st->time_base, |
1229 | AV_ROUND_DOWN); |
1230 | } |
1231 | } else if (st->codec->time_base.num != 0 && |
1232 | st->codec->time_base.den != 0) { |
1233 | out_pkt.duration = av_rescale_q_rnd(st->parser->duration, |
1234 | st->codec->time_base, |
1235 | st->time_base, |
1236 | AV_ROUND_DOWN); |
1237 | } |
1238 | |
1239 | out_pkt.stream_index = st->index; |
1240 | out_pkt.pts = st->parser->pts; |
1241 | out_pkt.dts = st->parser->dts; |
1242 | out_pkt.pos = st->parser->pos; |
1243 | |
1244 | if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) |
1245 | out_pkt.pos = st->parser->frame_offset; |
1246 | |
1247 | if (st->parser->key_frame == 1 || |
1248 | (st->parser->key_frame == -1 && |
1249 | st->parser->pict_type == AV_PICTURE_TYPE_I)) |
1250 | out_pkt.flags |= AV_PKT_FLAG_KEY; |
1251 | |
1252 | if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY)) |
1253 | out_pkt.flags |= AV_PKT_FLAG_KEY; |
1254 | |
1255 | compute_pkt_fields(s, st, st->parser, &out_pkt); |
1256 | |
1257 | if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) { |
1258 | out_pkt.buf = pkt->buf; |
1259 | pkt->buf = NULL; |
1260 | #if FF_API_DESTRUCT_PACKET |
1261 | FF_DISABLE_DEPRECATION_WARNINGS |
1262 | out_pkt.destruct = pkt->destruct; |
1263 | pkt->destruct = NULL; |
1264 | FF_ENABLE_DEPRECATION_WARNINGS |
1265 | #endif |
1266 | } |
1267 | if ((ret = av_dup_packet(&out_pkt)) < 0) |
1268 | goto fail; |
1269 | |
1270 | if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) { |
1271 | av_free_packet(&out_pkt); |
1272 | ret = AVERROR(ENOMEM); |
1273 | goto fail; |
1274 | } |
1275 | } |
1276 | |
1277 | |
1278 | /* end of the stream => close and free the parser */ |
1279 | if (pkt == &flush_pkt) { |
1280 | av_parser_close(st->parser); |
1281 | st->parser = NULL; |
1282 | } |
1283 | |
1284 | fail: |
1285 | av_free_packet(pkt); |
1286 | return ret; |
1287 | } |
1288 | |
1289 | static int read_from_packet_buffer(AVPacketList **pkt_buffer, |
1290 | AVPacketList **pkt_buffer_end, |
1291 | AVPacket *pkt) |
1292 | { |
1293 | AVPacketList *pktl; |
1294 | av_assert0(*pkt_buffer); |
1295 | pktl = *pkt_buffer; |
1296 | *pkt = pktl->pkt; |
1297 | *pkt_buffer = pktl->next; |
1298 | if (!pktl->next) |
1299 | *pkt_buffer_end = NULL; |
1300 | av_freep(&pktl); |
1301 | return 0; |
1302 | } |
1303 | |
1304 | static int read_frame_internal(AVFormatContext *s, AVPacket *pkt) |
1305 | { |
1306 | int ret = 0, i, got_packet = 0; |
1307 | |
1308 | av_init_packet(pkt); |
1309 | |
1310 | while (!got_packet && !s->parse_queue) { |
1311 | AVStream *st; |
1312 | AVPacket cur_pkt; |
1313 | |
1314 | /* read next packet */ |
1315 | ret = ff_read_packet(s, &cur_pkt); |
1316 | if (ret < 0) { |
1317 | if (ret == AVERROR(EAGAIN)) |
1318 | return ret; |
1319 | /* flush the parsers */ |
1320 | for(i = 0; i < s->nb_streams; i++) { |
1321 | st = s->streams[i]; |
1322 | if (st->parser && st->need_parsing) |
1323 | parse_packet(s, NULL, st->index); |
1324 | } |
1325 | /* all remaining packets are now in parse_queue => |
1326 | * really terminate parsing */ |
1327 | break; |
1328 | } |
1329 | ret = 0; |
1330 | st = s->streams[cur_pkt.stream_index]; |
1331 | |
1332 | if (cur_pkt.pts != AV_NOPTS_VALUE && |
1333 | cur_pkt.dts != AV_NOPTS_VALUE && |
1334 | cur_pkt.pts < cur_pkt.dts) { |
1335 | av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n", |
1336 | cur_pkt.stream_index, |
1337 | av_ts2str(cur_pkt.pts), |
1338 | av_ts2str(cur_pkt.dts), |
1339 | cur_pkt.size); |
1340 | } |
1341 | if (s->debug & FF_FDEBUG_TS) |
1342 | av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n", |
1343 | cur_pkt.stream_index, |
1344 | av_ts2str(cur_pkt.pts), |
1345 | av_ts2str(cur_pkt.dts), |
1346 | cur_pkt.size, |
1347 | cur_pkt.duration, |
1348 | cur_pkt.flags); |
1349 | |
1350 | if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) { |
1351 | st->parser = av_parser_init(st->codec->codec_id); |
1352 | if (!st->parser) { |
1353 | av_log(s, AV_LOG_VERBOSE, "parser not found for codec " |
1354 | "%s, packets or times may be invalid.\n", |
1355 | avcodec_get_name(st->codec->codec_id)); |
1356 | /* no parser available: just output the raw packets */ |
1357 | st->need_parsing = AVSTREAM_PARSE_NONE; |
1358 | } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) { |
1359 | st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES; |
1360 | } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) { |
1361 | st->parser->flags |= PARSER_FLAG_ONCE; |
1362 | } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) { |
1363 | st->parser->flags |= PARSER_FLAG_USE_CODEC_TS; |
1364 | } |
1365 | } |
1366 | |
1367 | if (!st->need_parsing || !st->parser) { |
1368 | /* no parsing needed: we just output the packet as is */ |
1369 | *pkt = cur_pkt; |
1370 | compute_pkt_fields(s, st, NULL, pkt); |
1371 | if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && |
1372 | (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) { |
1373 | ff_reduce_index(s, st->index); |
1374 | av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME); |
1375 | } |
1376 | got_packet = 1; |
1377 | } else if (st->discard < AVDISCARD_ALL) { |
1378 | if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0) |
1379 | return ret; |
1380 | } else { |
1381 | /* free packet */ |
1382 | av_free_packet(&cur_pkt); |
1383 | } |
1384 | if (pkt->flags & AV_PKT_FLAG_KEY) |
1385 | st->skip_to_keyframe = 0; |
1386 | if (st->skip_to_keyframe) { |
1387 | av_free_packet(&cur_pkt); |
1388 | if (got_packet) { |
1389 | *pkt = cur_pkt; |
1390 | } |
1391 | got_packet = 0; |
1392 | } |
1393 | } |
1394 | |
1395 | if (!got_packet && s->parse_queue) |
1396 | ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt); |
1397 | |
1398 | if(s->debug & FF_FDEBUG_TS) |
1399 | av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n", |
1400 | pkt->stream_index, |
1401 | av_ts2str(pkt->pts), |
1402 | av_ts2str(pkt->dts), |
1403 | pkt->size, |
1404 | pkt->duration, |
1405 | pkt->flags); |
1406 | |
1407 | return ret; |
1408 | } |
1409 | |
1410 | int av_read_frame(AVFormatContext *s, AVPacket *pkt) |
1411 | { |
1412 | const int genpts = s->flags & AVFMT_FLAG_GENPTS; |
1413 | int eof = 0; |
1414 | int ret; |
1415 | AVStream *st; |
1416 | |
1417 | if (!genpts) { |
1418 | ret = s->packet_buffer ? |
1419 | read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) : |
1420 | read_frame_internal(s, pkt); |
1421 | if (ret < 0) |
1422 | return ret; |
1423 | goto return_packet; |
1424 | } |
1425 | |
1426 | for (;;) { |
1427 | AVPacketList *pktl = s->packet_buffer; |
1428 | |
1429 | if (pktl) { |
1430 | AVPacket *next_pkt = &pktl->pkt; |
1431 | |
1432 | if (next_pkt->dts != AV_NOPTS_VALUE) { |
1433 | int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits; |
1434 | // last dts seen for this stream. if any of packets following |
1435 | // current one had no dts, we will set this to AV_NOPTS_VALUE. |
1436 | int64_t last_dts = next_pkt->dts; |
1437 | while (pktl && next_pkt->pts == AV_NOPTS_VALUE) { |
1438 | if (pktl->pkt.stream_index == next_pkt->stream_index && |
1439 | (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) { |
1440 | if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame |
1441 | next_pkt->pts = pktl->pkt.dts; |
1442 | } |
1443 | if (last_dts != AV_NOPTS_VALUE) { |
1444 | // Once last dts was set to AV_NOPTS_VALUE, we don't change it. |
1445 | last_dts = pktl->pkt.dts; |
1446 | } |
1447 | } |
1448 | pktl = pktl->next; |
1449 | } |
1450 | if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) { |
1451 | // Fixing the last reference frame had none pts issue (For MXF etc). |
1452 | // We only do this when |
1453 | // 1. eof. |
1454 | // 2. we are not able to resolve a pts value for current packet. |
1455 | // 3. the packets for this stream at the end of the files had valid dts. |
1456 | next_pkt->pts = last_dts + next_pkt->duration; |
1457 | } |
1458 | pktl = s->packet_buffer; |
1459 | } |
1460 | |
1461 | /* read packet from packet buffer, if there is data */ |
1462 | if (!(next_pkt->pts == AV_NOPTS_VALUE && |
1463 | next_pkt->dts != AV_NOPTS_VALUE && !eof)) { |
1464 | ret = read_from_packet_buffer(&s->packet_buffer, |
1465 | &s->packet_buffer_end, pkt); |
1466 | goto return_packet; |
1467 | } |
1468 | } |
1469 | |
1470 | ret = read_frame_internal(s, pkt); |
1471 | if (ret < 0) { |
1472 | if (pktl && ret != AVERROR(EAGAIN)) { |
1473 | eof = 1; |
1474 | continue; |
1475 | } else |
1476 | return ret; |
1477 | } |
1478 | |
1479 | if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt, |
1480 | &s->packet_buffer_end)) < 0) |
1481 | return AVERROR(ENOMEM); |
1482 | } |
1483 | |
1484 | return_packet: |
1485 | |
1486 | st = s->streams[pkt->stream_index]; |
1487 | if (st->skip_samples) { |
1488 | uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10); |
1489 | if (p) { |
1490 | AV_WL32(p, st->skip_samples); |
1491 | av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples); |
1492 | } |
1493 | st->skip_samples = 0; |
1494 | } |
1495 | |
1496 | if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) { |
1497 | ff_reduce_index(s, st->index); |
1498 | av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME); |
1499 | } |
1500 | |
1501 | if (is_relative(pkt->dts)) |
1502 | pkt->dts -= RELATIVE_TS_BASE; |
1503 | if (is_relative(pkt->pts)) |
1504 | pkt->pts -= RELATIVE_TS_BASE; |
1505 | |
1506 | return ret; |
1507 | } |
1508 | |
1509 | /* XXX: suppress the packet queue */ |
1510 | static void flush_packet_queue(AVFormatContext *s) |
1511 | { |
1512 | free_packet_buffer(&s->parse_queue, &s->parse_queue_end); |
1513 | free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end); |
1514 | free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end); |
1515 | |
1516 | s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE; |
1517 | } |
1518 | |
1519 | /*******************************************************/ |
1520 | /* seek support */ |
1521 | |
1522 | int av_find_default_stream_index(AVFormatContext *s) |
1523 | { |
1524 | int first_audio_index = -1; |
1525 | int i; |
1526 | AVStream *st; |
1527 | |
1528 | if (s->nb_streams <= 0) |
1529 | return -1; |
1530 | for(i = 0; i < s->nb_streams; i++) { |
1531 | st = s->streams[i]; |
1532 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && |
1533 | !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) { |
1534 | return i; |
1535 | } |
1536 | if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO) |
1537 | first_audio_index = i; |
1538 | } |
1539 | return first_audio_index >= 0 ? first_audio_index : 0; |
1540 | } |
1541 | |
1542 | /** |
1543 | * Flush the frame reader. |
1544 | */ |
1545 | void ff_read_frame_flush(AVFormatContext *s) |
1546 | { |
1547 | AVStream *st; |
1548 | int i, j; |
1549 | |
1550 | flush_packet_queue(s); |
1551 | |
1552 | /* for each stream, reset read state */ |
1553 | for(i = 0; i < s->nb_streams; i++) { |
1554 | st = s->streams[i]; |
1555 | |
1556 | if (st->parser) { |
1557 | av_parser_close(st->parser); |
1558 | st->parser = NULL; |
1559 | } |
1560 | st->last_IP_pts = AV_NOPTS_VALUE; |
1561 | if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE; |
1562 | else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */ |
1563 | |
1564 | st->probe_packets = MAX_PROBE_PACKETS; |
1565 | |
1566 | for(j=0; j<MAX_REORDER_DELAY+1; j++) |
1567 | st->pts_buffer[j]= AV_NOPTS_VALUE; |
1568 | } |
1569 | } |
1570 | |
1571 | void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp) |
1572 | { |
1573 | int i; |
1574 | |
1575 | for(i = 0; i < s->nb_streams; i++) { |
1576 | AVStream *st = s->streams[i]; |
1577 | |
1578 | st->cur_dts = av_rescale(timestamp, |
1579 | st->time_base.den * (int64_t)ref_st->time_base.num, |
1580 | st->time_base.num * (int64_t)ref_st->time_base.den); |
1581 | } |
1582 | } |
1583 | |
1584 | void ff_reduce_index(AVFormatContext *s, int stream_index) |
1585 | { |
1586 | AVStream *st= s->streams[stream_index]; |
1587 | unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry); |
1588 | |
1589 | if((unsigned)st->nb_index_entries >= max_entries){ |
1590 | int i; |
1591 | for(i=0; 2*i<st->nb_index_entries; i++) |
1592 | st->index_entries[i]= st->index_entries[2*i]; |
1593 | st->nb_index_entries= i; |
1594 | } |
1595 | } |
1596 | |
1597 | int ff_add_index_entry(AVIndexEntry **index_entries, |
1598 | int *nb_index_entries, |
1599 | unsigned int *index_entries_allocated_size, |
1600 | int64_t pos, int64_t timestamp, int size, int distance, int flags) |
1601 | { |
1602 | AVIndexEntry *entries, *ie; |
1603 | int index; |
1604 | |
1605 | if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry)) |
1606 | return -1; |
1607 | |
1608 | if(timestamp == AV_NOPTS_VALUE) |
1609 | return AVERROR(EINVAL); |
1610 | |
1611 | if (size < 0 || size > 0x3FFFFFFF) |
1612 | return AVERROR(EINVAL); |
1613 | |
1614 | if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known |
1615 | timestamp -= RELATIVE_TS_BASE; |
1616 | |
1617 | entries = av_fast_realloc(*index_entries, |
1618 | index_entries_allocated_size, |
1619 | (*nb_index_entries + 1) * |
1620 | sizeof(AVIndexEntry)); |
1621 | if(!entries) |
1622 | return -1; |
1623 | |
1624 | *index_entries= entries; |
1625 | |
1626 | index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY); |
1627 | |
1628 | if(index<0){ |
1629 | index= (*nb_index_entries)++; |
1630 | ie= &entries[index]; |
1631 | av_assert0(index==0 || ie[-1].timestamp < timestamp); |
1632 | }else{ |
1633 | ie= &entries[index]; |
1634 | if(ie->timestamp != timestamp){ |
1635 | if(ie->timestamp <= timestamp) |
1636 | return -1; |
1637 | memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index)); |
1638 | (*nb_index_entries)++; |
1639 | }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance |
1640 | distance= ie->min_distance; |
1641 | } |
1642 | |
1643 | ie->pos = pos; |
1644 | ie->timestamp = timestamp; |
1645 | ie->min_distance= distance; |
1646 | ie->size= size; |
1647 | ie->flags = flags; |
1648 | |
1649 | return index; |
1650 | } |
1651 | |
1652 | int av_add_index_entry(AVStream *st, |
1653 | int64_t pos, int64_t timestamp, int size, int distance, int flags) |
1654 | { |
1655 | timestamp = wrap_timestamp(st, timestamp); |
1656 | return ff_add_index_entry(&st->index_entries, &st->nb_index_entries, |
1657 | &st->index_entries_allocated_size, pos, |
1658 | timestamp, size, distance, flags); |
1659 | } |
1660 | |
1661 | int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries, |
1662 | int64_t wanted_timestamp, int flags) |
1663 | { |
1664 | int a, b, m; |
1665 | int64_t timestamp; |
1666 | |
1667 | a = - 1; |
1668 | b = nb_entries; |
1669 | |
1670 | //optimize appending index entries at the end |
1671 | if(b && entries[b-1].timestamp < wanted_timestamp) |
1672 | a= b-1; |
1673 | |
1674 | while (b - a > 1) { |
1675 | m = (a + b) >> 1; |
1676 | timestamp = entries[m].timestamp; |
1677 | if(timestamp >= wanted_timestamp) |
1678 | b = m; |
1679 | if(timestamp <= wanted_timestamp) |
1680 | a = m; |
1681 | } |
1682 | m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b; |
1683 | |
1684 | if(!(flags & AVSEEK_FLAG_ANY)){ |
1685 | while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){ |
1686 | m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1; |
1687 | } |
1688 | } |
1689 | |
1690 | if(m == nb_entries) |
1691 | return -1; |
1692 | return m; |
1693 | } |
1694 | |
1695 | int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, |
1696 | int flags) |
1697 | { |
1698 | return ff_index_search_timestamp(st->index_entries, st->nb_index_entries, |
1699 | wanted_timestamp, flags); |
1700 | } |
1701 | |
1702 | static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit, |
1703 | int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )) |
1704 | { |
1705 | int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit); |
1706 | if (stream_index >= 0) |
1707 | ts = wrap_timestamp(s->streams[stream_index], ts); |
1708 | return ts; |
1709 | } |
1710 | |
1711 | int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags) |
1712 | { |
1713 | AVInputFormat *avif= s->iformat; |
1714 | int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit; |
1715 | int64_t ts_min, ts_max, ts; |
1716 | int index; |
1717 | int64_t ret; |
1718 | AVStream *st; |
1719 | |
1720 | if (stream_index < 0) |
1721 | return -1; |
1722 | |
1723 | av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts)); |
1724 | |
1725 | ts_max= |
1726 | ts_min= AV_NOPTS_VALUE; |
1727 | pos_limit= -1; //gcc falsely says it may be uninitialized |
1728 | |
1729 | st= s->streams[stream_index]; |
1730 | if(st->index_entries){ |
1731 | AVIndexEntry *e; |
1732 | |
1733 | index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non-keyframe entries in index case, especially read_timestamp() |
1734 | index= FFMAX(index, 0); |
1735 | e= &st->index_entries[index]; |
1736 | |
1737 | if(e->timestamp <= target_ts || e->pos == e->min_distance){ |
1738 | pos_min= e->pos; |
1739 | ts_min= e->timestamp; |
1740 | av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n", |
1741 | pos_min, av_ts2str(ts_min)); |
1742 | }else{ |
1743 | av_assert1(index==0); |
1744 | } |
1745 | |
1746 | index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD); |
1747 | av_assert0(index < st->nb_index_entries); |
1748 | if(index >= 0){ |
1749 | e= &st->index_entries[index]; |
1750 | av_assert1(e->timestamp >= target_ts); |
1751 | pos_max= e->pos; |
1752 | ts_max= e->timestamp; |
1753 | pos_limit= pos_max - e->min_distance; |
1754 | av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n", |
1755 | pos_max, pos_limit, av_ts2str(ts_max)); |
1756 | } |
1757 | } |
1758 | |
1759 | pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp); |
1760 | if(pos<0) |
1761 | return -1; |
1762 | |
1763 | /* do the seek */ |
1764 | if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0) |
1765 | return ret; |
1766 | |
1767 | ff_read_frame_flush(s); |
1768 | ff_update_cur_dts(s, st, ts); |
1769 | |
1770 | return 0; |
1771 | } |
1772 | |
1773 | int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos, |
1774 | int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )) |
1775 | { |
1776 | int64_t step= 1024; |
1777 | int64_t limit, ts_max; |
1778 | int64_t filesize = avio_size(s->pb); |
1779 | int64_t pos_max = filesize - 1; |
1780 | do{ |
1781 | limit = pos_max; |
1782 | pos_max = FFMAX(0, (pos_max) - step); |
1783 | ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp); |
1784 | step += step; |
1785 | }while(ts_max == AV_NOPTS_VALUE && 2*limit > step); |
1786 | if (ts_max == AV_NOPTS_VALUE) |
1787 | return -1; |
1788 | |
1789 | for(;;){ |
1790 | int64_t tmp_pos = pos_max + 1; |
1791 | int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp); |
1792 | if(tmp_ts == AV_NOPTS_VALUE) |
1793 | break; |
1794 | av_assert0(tmp_pos > pos_max); |
1795 | ts_max = tmp_ts; |
1796 | pos_max = tmp_pos; |
1797 | if(tmp_pos >= filesize) |
1798 | break; |
1799 | } |
1800 | |
1801 | if (ts) |
1802 | *ts = ts_max; |
1803 | if (pos) |
1804 | *pos = pos_max; |
1805 | |
1806 | return 0; |
1807 | } |
1808 | |
1809 | int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, |
1810 | int64_t pos_min, int64_t pos_max, int64_t pos_limit, |
1811 | int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, |
1812 | int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )) |
1813 | { |
1814 | int64_t pos, ts; |
1815 | int64_t start_pos; |
1816 | int no_change; |
1817 | int ret; |
1818 | |
1819 | av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts)); |
1820 | |
1821 | if(ts_min == AV_NOPTS_VALUE){ |
1822 | pos_min = s->data_offset; |
1823 | ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp); |
1824 | if (ts_min == AV_NOPTS_VALUE) |
1825 | return -1; |
1826 | } |
1827 | |
1828 | if(ts_min >= target_ts){ |
1829 | *ts_ret= ts_min; |
1830 | return pos_min; |
1831 | } |
1832 | |
1833 | if(ts_max == AV_NOPTS_VALUE){ |
1834 | if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0) |
1835 | return ret; |
1836 | pos_limit= pos_max; |
1837 | } |
1838 | |
1839 | if(ts_max <= target_ts){ |
1840 | *ts_ret= ts_max; |
1841 | return pos_max; |
1842 | } |
1843 | |
1844 | if(ts_min > ts_max){ |
1845 | return -1; |
1846 | }else if(ts_min == ts_max){ |
1847 | pos_limit= pos_min; |
1848 | } |
1849 | |
1850 | no_change=0; |
1851 | while (pos_min < pos_limit) { |
1852 | av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n", |
1853 | pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max)); |
1854 | assert(pos_limit <= pos_max); |
1855 | |
1856 | if(no_change==0){ |
1857 | int64_t approximate_keyframe_distance= pos_max - pos_limit; |
1858 | // interpolate position (better than dichotomy) |
1859 | pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min) |
1860 | + pos_min - approximate_keyframe_distance; |
1861 | }else if(no_change==1){ |
1862 | // bisection, if interpolation failed to change min or max pos last time |
1863 | pos = (pos_min + pos_limit)>>1; |
1864 | }else{ |
1865 | /* linear search if bisection failed, can only happen if there |
1866 | are very few or no keyframes between min/max */ |
1867 | pos=pos_min; |
1868 | } |
1869 | if(pos <= pos_min) |
1870 | pos= pos_min + 1; |
1871 | else if(pos > pos_limit) |
1872 | pos= pos_limit; |
1873 | start_pos= pos; |
1874 | |
1875 | ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1 |
1876 | if(pos == pos_max) |
1877 | no_change++; |
1878 | else |
1879 | no_change=0; |
1880 | av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n", |
1881 | pos_min, pos, pos_max, |
1882 | av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts), |
1883 | pos_limit, start_pos, no_change); |
1884 | if(ts == AV_NOPTS_VALUE){ |
1885 | av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n"); |
1886 | return -1; |
1887 | } |
1888 | assert(ts != AV_NOPTS_VALUE); |
1889 | if (target_ts <= ts) { |
1890 | pos_limit = start_pos - 1; |
1891 | pos_max = pos; |
1892 | ts_max = ts; |
1893 | } |
1894 | if (target_ts >= ts) { |
1895 | pos_min = pos; |
1896 | ts_min = ts; |
1897 | } |
1898 | } |
1899 | |
1900 | pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max; |
1901 | ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max; |
1902 | #if 0 |
1903 | pos_min = pos; |
1904 | ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp); |
1905 | pos_min++; |
1906 | ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp); |
1907 | av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n", |
1908 | pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max)); |
1909 | #endif |
1910 | *ts_ret= ts; |
1911 | return pos; |
1912 | } |
1913 | |
1914 | static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){ |
1915 | int64_t pos_min, pos_max; |
1916 | |
1917 | pos_min = s->data_offset; |
1918 | pos_max = avio_size(s->pb) - 1; |
1919 | |
1920 | if (pos < pos_min) pos= pos_min; |
1921 | else if(pos > pos_max) pos= pos_max; |
1922 | |
1923 | avio_seek(s->pb, pos, SEEK_SET); |
1924 | |
1925 | s->io_repositioned = 1; |
1926 | |
1927 | return 0; |
1928 | } |
1929 | |
1930 | static int seek_frame_generic(AVFormatContext *s, |
1931 | int stream_index, int64_t timestamp, int flags) |
1932 | { |
1933 | int index; |
1934 | int64_t ret; |
1935 | AVStream *st; |
1936 | AVIndexEntry *ie; |
1937 | |
1938 | st = s->streams[stream_index]; |
1939 | |
1940 | index = av_index_search_timestamp(st, timestamp, flags); |
1941 | |
1942 | if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp) |
1943 | return -1; |
1944 | |
1945 | if(index < 0 || index==st->nb_index_entries-1){ |
1946 | AVPacket pkt; |
1947 | int nonkey=0; |
1948 | |
1949 | if(st->nb_index_entries){ |
1950 | av_assert0(st->index_entries); |
1951 | ie= &st->index_entries[st->nb_index_entries-1]; |
1952 | if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0) |
1953 | return ret; |
1954 | ff_update_cur_dts(s, st, ie->timestamp); |
1955 | }else{ |
1956 | if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0) |
1957 | return ret; |
1958 | } |
1959 | for (;;) { |
1960 | int read_status; |
1961 | do{ |
1962 | read_status = av_read_frame(s, &pkt); |
1963 | } while (read_status == AVERROR(EAGAIN)); |
1964 | if (read_status < 0) |
1965 | break; |
1966 | av_free_packet(&pkt); |
1967 | if(stream_index == pkt.stream_index && pkt.dts > timestamp){ |
1968 | if(pkt.flags & AV_PKT_FLAG_KEY) |
1969 | break; |
1970 | if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){ |
1971 | av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey); |
1972 | break; |
1973 | } |
1974 | } |
1975 | } |
1976 | index = av_index_search_timestamp(st, timestamp, flags); |
1977 | } |
1978 | if (index < 0) |
1979 | return -1; |
1980 | |
1981 | ff_read_frame_flush(s); |
1982 | if (s->iformat->read_seek){ |
1983 | if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0) |
1984 | return 0; |
1985 | } |
1986 | ie = &st->index_entries[index]; |
1987 | if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0) |
1988 | return ret; |
1989 | ff_update_cur_dts(s, st, ie->timestamp); |
1990 | |
1991 | return 0; |
1992 | } |
1993 | |
1994 | static int seek_frame_internal(AVFormatContext *s, int stream_index, |
1995 | int64_t timestamp, int flags) |
1996 | { |
1997 | int ret; |
1998 | AVStream *st; |
1999 | |
2000 | if (flags & AVSEEK_FLAG_BYTE) { |
2001 | if (s->iformat->flags & AVFMT_NO_BYTE_SEEK) |
2002 | return -1; |
2003 | ff_read_frame_flush(s); |
2004 | return seek_frame_byte(s, stream_index, timestamp, flags); |
2005 | } |
2006 | |
2007 | if(stream_index < 0){ |
2008 | stream_index= av_find_default_stream_index(s); |
2009 | if(stream_index < 0) |
2010 | return -1; |
2011 | |
2012 | st= s->streams[stream_index]; |
2013 | /* timestamp for default must be expressed in AV_TIME_BASE units */ |
2014 | timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num); |
2015 | } |
2016 | |
2017 | /* first, we try the format specific seek */ |
2018 | if (s->iformat->read_seek) { |
2019 | ff_read_frame_flush(s); |
2020 | ret = s->iformat->read_seek(s, stream_index, timestamp, flags); |
2021 | } else |
2022 | ret = -1; |
2023 | if (ret >= 0) { |
2024 | return 0; |
2025 | } |
2026 | |
2027 | if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) { |
2028 | ff_read_frame_flush(s); |
2029 | return ff_seek_frame_binary(s, stream_index, timestamp, flags); |
2030 | } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) { |
2031 | ff_read_frame_flush(s); |
2032 | return seek_frame_generic(s, stream_index, timestamp, flags); |
2033 | } |
2034 | else |
2035 | return -1; |
2036 | } |
2037 | |
2038 | int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags) |
2039 | { |
2040 | int ret; |
2041 | |
2042 | if (s->iformat->read_seek2 && !s->iformat->read_seek) { |
2043 | int64_t min_ts = INT64_MIN, max_ts = INT64_MAX; |
2044 | if ((flags & AVSEEK_FLAG_BACKWARD)) |
2045 | max_ts = timestamp; |
2046 | else |
2047 | min_ts = timestamp; |
2048 | return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts, |
2049 | flags & ~AVSEEK_FLAG_BACKWARD); |
2050 | } |
2051 | |
2052 | ret = seek_frame_internal(s, stream_index, timestamp, flags); |
2053 | |
2054 | if (ret >= 0) |
2055 | ret = avformat_queue_attached_pictures(s); |
2056 | |
2057 | return ret; |
2058 | } |
2059 | |
2060 | int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
2061 | { |
2062 | if(min_ts > ts || max_ts < ts) |
2063 | return -1; |
2064 | if (stream_index < -1 || stream_index >= (int)s->nb_streams) |
2065 | return AVERROR(EINVAL); |
2066 | |
2067 | if(s->seek2any>0) |
2068 | flags |= AVSEEK_FLAG_ANY; |
2069 | flags &= ~AVSEEK_FLAG_BACKWARD; |
2070 | |
2071 | if (s->iformat->read_seek2) { |
2072 | int ret; |
2073 | ff_read_frame_flush(s); |
2074 | |
2075 | if (stream_index == -1 && s->nb_streams == 1) { |
2076 | AVRational time_base = s->streams[0]->time_base; |
2077 | ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base); |
2078 | min_ts = av_rescale_rnd(min_ts, time_base.den, |
2079 | time_base.num * (int64_t)AV_TIME_BASE, |
2080 | AV_ROUND_UP | AV_ROUND_PASS_MINMAX); |
2081 | max_ts = av_rescale_rnd(max_ts, time_base.den, |
2082 | time_base.num * (int64_t)AV_TIME_BASE, |
2083 | AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX); |
2084 | } |
2085 | |
2086 | ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags); |
2087 | |
2088 | if (ret >= 0) |
2089 | ret = avformat_queue_attached_pictures(s); |
2090 | return ret; |
2091 | } |
2092 | |
2093 | if(s->iformat->read_timestamp){ |
2094 | //try to seek via read_timestamp() |
2095 | } |
2096 | |
2097 | // Fall back on old API if new is not implemented but old is. |
2098 | // Note the old API has somewhat different semantics. |
2099 | if (s->iformat->read_seek || 1) { |
2100 | int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0); |
2101 | int ret = av_seek_frame(s, stream_index, ts, flags | dir); |
2102 | if (ret<0 && ts != min_ts && max_ts != ts) { |
2103 | ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir); |
2104 | if (ret >= 0) |
2105 | ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD)); |
2106 | } |
2107 | return ret; |
2108 | } |
2109 | |
2110 | // try some generic seek like seek_frame_generic() but with new ts semantics |
2111 | return -1; //unreachable |
2112 | } |
2113 | |
2114 | /*******************************************************/ |
2115 | |
2116 | /** |
2117 | * Return TRUE if the stream has accurate duration in any stream. |
2118 | * |
2119 | * @return TRUE if the stream has accurate duration for at least one component. |
2120 | */ |
2121 | static int has_duration(AVFormatContext *ic) |
2122 | { |
2123 | int i; |
2124 | AVStream *st; |
2125 | |
2126 | for(i = 0;i < ic->nb_streams; i++) { |
2127 | st = ic->streams[i]; |
2128 | if (st->duration != AV_NOPTS_VALUE) |
2129 | return 1; |
2130 | } |
2131 | if (ic->duration != AV_NOPTS_VALUE) |
2132 | return 1; |
2133 | return 0; |
2134 | } |
2135 | |
2136 | /** |
2137 | * Estimate the stream timings from the one of each components. |
2138 | * |
2139 | * Also computes the global bitrate if possible. |
2140 | */ |
2141 | static void update_stream_timings(AVFormatContext *ic) |
2142 | { |
2143 | int64_t start_time, start_time1, start_time_text, end_time, end_time1; |
2144 | int64_t duration, duration1, filesize; |
2145 | int i; |
2146 | AVStream *st; |
2147 | AVProgram *p; |
2148 | |
2149 | start_time = INT64_MAX; |
2150 | start_time_text = INT64_MAX; |
2151 | end_time = INT64_MIN; |
2152 | duration = INT64_MIN; |
2153 | for(i = 0;i < ic->nb_streams; i++) { |
2154 | st = ic->streams[i]; |
2155 | if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) { |
2156 | start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q); |
2157 | if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) { |
2158 | if (start_time1 < start_time_text) |
2159 | start_time_text = start_time1; |
2160 | } else |
2161 | start_time = FFMIN(start_time, start_time1); |
2162 | end_time1 = AV_NOPTS_VALUE; |
2163 | if (st->duration != AV_NOPTS_VALUE) { |
2164 | end_time1 = start_time1 |
2165 | + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q); |
2166 | end_time = FFMAX(end_time, end_time1); |
2167 | } |
2168 | for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){ |
2169 | if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1) |
2170 | p->start_time = start_time1; |
2171 | if(p->end_time < end_time1) |
2172 | p->end_time = end_time1; |
2173 | } |
2174 | } |
2175 | if (st->duration != AV_NOPTS_VALUE) { |
2176 | duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q); |
2177 | duration = FFMAX(duration, duration1); |
2178 | } |
2179 | } |
2180 | if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE)) |
2181 | start_time = start_time_text; |
2182 | else if(start_time > start_time_text) |
2183 | av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE); |
2184 | |
2185 | if (start_time != INT64_MAX) { |
2186 | ic->start_time = start_time; |
2187 | if (end_time != INT64_MIN) { |
2188 | if (ic->nb_programs) { |
2189 | for (i=0; i<ic->nb_programs; i++) { |
2190 | p = ic->programs[i]; |
2191 | if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time) |
2192 | duration = FFMAX(duration, p->end_time - p->start_time); |
2193 | } |
2194 | } else |
2195 | duration = FFMAX(duration, end_time - start_time); |
2196 | } |
2197 | } |
2198 | if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) { |
2199 | ic->duration = duration; |
2200 | } |
2201 | if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) { |
2202 | /* compute the bitrate */ |
2203 | double bitrate = (double)filesize * 8.0 * AV_TIME_BASE / |
2204 | (double)ic->duration; |
2205 | if (bitrate >= 0 && bitrate <= INT_MAX) |
2206 | ic->bit_rate = bitrate; |
2207 | } |
2208 | } |
2209 | |
2210 | static void fill_all_stream_timings(AVFormatContext *ic) |
2211 | { |
2212 | int i; |
2213 | AVStream *st; |
2214 | |
2215 | update_stream_timings(ic); |
2216 | for(i = 0;i < ic->nb_streams; i++) { |
2217 | st = ic->streams[i]; |
2218 | if (st->start_time == AV_NOPTS_VALUE) { |
2219 | if(ic->start_time != AV_NOPTS_VALUE) |
2220 | st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base); |
2221 | if(ic->duration != AV_NOPTS_VALUE) |
2222 | st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base); |
2223 | } |
2224 | } |
2225 | } |
2226 | |
2227 | static void estimate_timings_from_bit_rate(AVFormatContext *ic) |
2228 | { |
2229 | int64_t filesize, duration; |
2230 | int i, show_warning = 0; |
2231 | AVStream *st; |
2232 | |
2233 | /* if bit_rate is already set, we believe it */ |
2234 | if (ic->bit_rate <= 0) { |
2235 | int bit_rate = 0; |
2236 | for(i=0;i<ic->nb_streams;i++) { |
2237 | st = ic->streams[i]; |
2238 | if (st->codec->bit_rate > 0) { |
2239 | if (INT_MAX - st->codec->bit_rate < bit_rate) { |
2240 | bit_rate = 0; |
2241 | break; |
2242 | } |
2243 | bit_rate += st->codec->bit_rate; |
2244 | } |
2245 | } |
2246 | ic->bit_rate = bit_rate; |
2247 | } |
2248 | |
2249 | /* if duration is already set, we believe it */ |
2250 | if (ic->duration == AV_NOPTS_VALUE && |
2251 | ic->bit_rate != 0) { |
2252 | filesize = ic->pb ? avio_size(ic->pb) : 0; |
2253 | if (filesize > 0) { |
2254 | for(i = 0; i < ic->nb_streams; i++) { |
2255 | st = ic->streams[i]; |
2256 | if ( st->time_base.num <= INT64_MAX / ic->bit_rate |
2257 | && st->duration == AV_NOPTS_VALUE) { |
2258 | duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num); |
2259 | st->duration = duration; |
2260 | show_warning = 1; |
2261 | } |
2262 | } |
2263 | } |
2264 | } |
2265 | if (show_warning) |
2266 | av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n"); |
2267 | } |
2268 | |
2269 | #define DURATION_MAX_READ_SIZE 250000LL |
2270 | #define DURATION_MAX_RETRY 4 |
2271 | |
2272 | /* only usable for MPEG-PS streams */ |
2273 | static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset) |
2274 | { |
2275 | AVPacket pkt1, *pkt = &pkt1; |
2276 | AVStream *st; |
2277 | int read_size, i, ret; |
2278 | int64_t end_time; |
2279 | int64_t filesize, offset, duration; |
2280 | int retry=0; |
2281 | |
2282 | /* flush packet queue */ |
2283 | flush_packet_queue(ic); |
2284 | |
2285 | for (i=0; i<ic->nb_streams; i++) { |
2286 | st = ic->streams[i]; |
2287 | if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE) |
2288 | av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n"); |
2289 | |
2290 | if (st->parser) { |
2291 | av_parser_close(st->parser); |
2292 | st->parser= NULL; |
2293 | } |
2294 | } |
2295 | |
2296 | /* estimate the end time (duration) */ |
2297 | /* XXX: may need to support wrapping */ |
2298 | filesize = ic->pb ? avio_size(ic->pb) : 0; |
2299 | end_time = AV_NOPTS_VALUE; |
2300 | do{ |
2301 | offset = filesize - (DURATION_MAX_READ_SIZE<<retry); |
2302 | if (offset < 0) |
2303 | offset = 0; |
2304 | |
2305 | avio_seek(ic->pb, offset, SEEK_SET); |
2306 | read_size = 0; |
2307 | for(;;) { |
2308 | if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0))) |
2309 | break; |
2310 | |
2311 | do { |
2312 | ret = ff_read_packet(ic, pkt); |
2313 | } while(ret == AVERROR(EAGAIN)); |
2314 | if (ret != 0) |
2315 | break; |
2316 | read_size += pkt->size; |
2317 | st = ic->streams[pkt->stream_index]; |
2318 | if (pkt->pts != AV_NOPTS_VALUE && |
2319 | (st->start_time != AV_NOPTS_VALUE || |
2320 | st->first_dts != AV_NOPTS_VALUE)) { |
2321 | duration = end_time = pkt->pts; |
2322 | if (st->start_time != AV_NOPTS_VALUE) |
2323 | duration -= st->start_time; |
2324 | else |
2325 | duration -= st->first_dts; |
2326 | if (duration > 0) { |
2327 | if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 || |
2328 | (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num)) |
2329 | st->duration = duration; |
2330 | st->info->last_duration = duration; |
2331 | } |
2332 | } |
2333 | av_free_packet(pkt); |
2334 | } |
2335 | }while( end_time==AV_NOPTS_VALUE |
2336 | && filesize > (DURATION_MAX_READ_SIZE<<retry) |
2337 | && ++retry <= DURATION_MAX_RETRY); |
2338 | |
2339 | fill_all_stream_timings(ic); |
2340 | |
2341 | avio_seek(ic->pb, old_offset, SEEK_SET); |
2342 | for (i=0; i<ic->nb_streams; i++) { |
2343 | st= ic->streams[i]; |
2344 | st->cur_dts= st->first_dts; |
2345 | st->last_IP_pts = AV_NOPTS_VALUE; |
2346 | } |
2347 | } |
2348 | |
2349 | static void estimate_timings(AVFormatContext *ic, int64_t old_offset) |
2350 | { |
2351 | int64_t file_size; |
2352 | |
2353 | /* get the file size, if possible */ |
2354 | if (ic->iformat->flags & AVFMT_NOFILE) { |
2355 | file_size = 0; |
2356 | } else { |
2357 | file_size = avio_size(ic->pb); |
2358 | file_size = FFMAX(0, file_size); |
2359 | } |
2360 | |
2361 | if ((!strcmp(ic->iformat->name, "mpeg") || |
2362 | !strcmp(ic->iformat->name, "mpegts")) && |
2363 | file_size && ic->pb->seekable) { |
2364 | /* get accurate estimate from the PTSes */ |
2365 | estimate_timings_from_pts(ic, old_offset); |
2366 | ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS; |
2367 | } else if (has_duration(ic)) { |
2368 | /* at least one component has timings - we use them for all |
2369 | the components */ |
2370 | fill_all_stream_timings(ic); |
2371 | ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM; |
2372 | } else { |
2373 | /* less precise: use bitrate info */ |
2374 | estimate_timings_from_bit_rate(ic); |
2375 | ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE; |
2376 | } |
2377 | update_stream_timings(ic); |
2378 | |
2379 | { |
2380 | int i; |
2381 | AVStream av_unused *st; |
2382 | for(i = 0;i < ic->nb_streams; i++) { |
2383 | st = ic->streams[i]; |
2384 | av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i, |
2385 | (double) st->start_time / AV_TIME_BASE, |
2386 | (double) st->duration / AV_TIME_BASE); |
2387 | } |
2388 | av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n", |
2389 | (double) ic->start_time / AV_TIME_BASE, |
2390 | (double) ic->duration / AV_TIME_BASE, |
2391 | ic->bit_rate / 1000); |
2392 | } |
2393 | } |
2394 | |
2395 | static int has_codec_parameters(AVStream *st, const char **errmsg_ptr) |
2396 | { |
2397 | AVCodecContext *avctx = st->codec; |
2398 | |
2399 | #define FAIL(errmsg) do { \ |
2400 | if (errmsg_ptr) \ |
2401 | *errmsg_ptr = errmsg; \ |
2402 | return 0; \ |
2403 | } while (0) |
2404 | |
2405 | switch (avctx->codec_type) { |
2406 | case AVMEDIA_TYPE_AUDIO: |
2407 | if (!avctx->frame_size && determinable_frame_size(avctx)) |
2408 | FAIL("unspecified frame size"); |
2409 | if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE) |
2410 | FAIL("unspecified sample format"); |
2411 | if (!avctx->sample_rate) |
2412 | FAIL("unspecified sample rate"); |
2413 | if (!avctx->channels) |
2414 | FAIL("unspecified number of channels"); |
2415 | if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS) |
2416 | FAIL("no decodable DTS frames"); |
2417 | break; |
2418 | case AVMEDIA_TYPE_VIDEO: |
2419 | if (!avctx->width) |
2420 | FAIL("unspecified size"); |
2421 | if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE) |
2422 | FAIL("unspecified pixel format"); |
2423 | if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40) |
2424 | if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames) |
2425 | FAIL("no frame in rv30/40 and no sar"); |
2426 | break; |
2427 | case AVMEDIA_TYPE_SUBTITLE: |
2428 | if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width) |
2429 | FAIL("unspecified size"); |
2430 | break; |
2431 | case AVMEDIA_TYPE_DATA: |
2432 | if(avctx->codec_id == AV_CODEC_ID_NONE) return 1; |
2433 | } |
2434 | |
2435 | if (avctx->codec_id == AV_CODEC_ID_NONE) |
2436 | FAIL("unknown codec"); |
2437 | return 1; |
2438 | } |
2439 | |
2440 | /* returns 1 or 0 if or if not decoded data was returned, or a negative error */ |
2441 | static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options) |
2442 | { |
2443 | const AVCodec *codec; |
2444 | int got_picture = 1, ret = 0; |
2445 | AVFrame *frame = avcodec_alloc_frame(); |
2446 | AVSubtitle subtitle; |
2447 | AVPacket pkt = *avpkt; |
2448 | |
2449 | if (!frame) |
2450 | return AVERROR(ENOMEM); |
2451 | |
2452 | if (!avcodec_is_open(st->codec) && !st->info->found_decoder) { |
2453 | AVDictionary *thread_opt = NULL; |
2454 | |
2455 | codec = find_decoder(s, st, st->codec->codec_id); |
2456 | |
2457 | if (!codec) { |
2458 | st->info->found_decoder = -1; |
2459 | ret = -1; |
2460 | goto fail; |
2461 | } |
2462 | |
2463 | /* force thread count to 1 since the h264 decoder will not extract SPS |
2464 | * and PPS to extradata during multi-threaded decoding */ |
2465 | av_dict_set(options ? options : &thread_opt, "threads", "1", 0); |
2466 | ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt); |
2467 | if (!options) |
2468 | av_dict_free(&thread_opt); |
2469 | if (ret < 0) { |
2470 | st->info->found_decoder = -1; |
2471 | goto fail; |
2472 | } |
2473 | st->info->found_decoder = 1; |
2474 | } else if (!st->info->found_decoder) |
2475 | st->info->found_decoder = 1; |
2476 | |
2477 | if (st->info->found_decoder < 0) { |
2478 | ret = -1; |
2479 | goto fail; |
2480 | } |
2481 | |
2482 | while ((pkt.size > 0 || (!pkt.data && got_picture)) && |
2483 | ret >= 0 && |
2484 | (!has_codec_parameters(st, NULL) || |
2485 | !has_decode_delay_been_guessed(st) || |
2486 | (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) { |
2487 | got_picture = 0; |
2488 | avcodec_get_frame_defaults(frame); |
2489 | switch(st->codec->codec_type) { |
2490 | case AVMEDIA_TYPE_VIDEO: |
2491 | ret = avcodec_decode_video2(st->codec, frame, |
2492 | &got_picture, &pkt); |
2493 | break; |
2494 | case AVMEDIA_TYPE_AUDIO: |
2495 | ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt); |
2496 | break; |
2497 | case AVMEDIA_TYPE_SUBTITLE: |
2498 | ret = avcodec_decode_subtitle2(st->codec, &subtitle, |
2499 | &got_picture, &pkt); |
2500 | ret = pkt.size; |
2501 | break; |
2502 | default: |
2503 | break; |
2504 | } |
2505 | if (ret >= 0) { |
2506 | if (got_picture) |
2507 | st->nb_decoded_frames++; |
2508 | pkt.data += ret; |
2509 | pkt.size -= ret; |
2510 | ret = got_picture; |
2511 | } |
2512 | } |
2513 | |
2514 | if(!pkt.data && !got_picture) |
2515 | ret = -1; |
2516 | |
2517 | fail: |
2518 | avcodec_free_frame(&frame); |
2519 | return ret; |
2520 | } |
2521 | |
2522 | unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id) |
2523 | { |
2524 | while (tags->id != AV_CODEC_ID_NONE) { |
2525 | if (tags->id == id) |
2526 | return tags->tag; |
2527 | tags++; |
2528 | } |
2529 | return 0; |
2530 | } |
2531 | |
2532 | enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag) |
2533 | { |
2534 | int i; |
2535 | for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) { |
2536 | if(tag == tags[i].tag) |
2537 | return tags[i].id; |
2538 | } |
2539 | for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) { |
2540 | if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag)) |
2541 | return tags[i].id; |
2542 | } |
2543 | return AV_CODEC_ID_NONE; |
2544 | } |
2545 | |
2546 | enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags) |
2547 | { |
2548 | if (flt) { |
2549 | switch (bps) { |
2550 | case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE; |
2551 | case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE; |
2552 | default: return AV_CODEC_ID_NONE; |
2553 | } |
2554 | } else { |
2555 | bps += 7; |
2556 | bps >>= 3; |
2557 | if (sflags & (1 << (bps - 1))) { |
2558 | switch (bps) { |
2559 | case 1: return AV_CODEC_ID_PCM_S8; |
2560 | case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE; |
2561 | case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE; |
2562 | case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; |
2563 | default: return AV_CODEC_ID_NONE; |
2564 | } |
2565 | } else { |
2566 | switch (bps) { |
2567 | case 1: return AV_CODEC_ID_PCM_U8; |
2568 | case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE; |
2569 | case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE; |
2570 | case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE; |
2571 | default: return AV_CODEC_ID_NONE; |
2572 | } |
2573 | } |
2574 | } |
2575 | } |
2576 | |
2577 | unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id) |
2578 | { |
2579 | unsigned int tag; |
2580 | if (!av_codec_get_tag2(tags, id, &tag)) |
2581 | return 0; |
2582 | return tag; |
2583 | } |
2584 | |
2585 | int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id, |
2586 | unsigned int *tag) |
2587 | { |
2588 | int i; |
2589 | for(i=0; tags && tags[i]; i++){ |
2590 | const AVCodecTag *codec_tags = tags[i]; |
2591 | while (codec_tags->id != AV_CODEC_ID_NONE) { |
2592 | if (codec_tags->id == id) { |
2593 | *tag = codec_tags->tag; |
2594 | return 1; |
2595 | } |
2596 | codec_tags++; |
2597 | } |
2598 | } |
2599 | return 0; |
2600 | } |
2601 | |
2602 | enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag) |
2603 | { |
2604 | int i; |
2605 | for(i=0; tags && tags[i]; i++){ |
2606 | enum AVCodecID id= ff_codec_get_id(tags[i], tag); |
2607 | if(id!=AV_CODEC_ID_NONE) return id; |
2608 | } |
2609 | return AV_CODEC_ID_NONE; |
2610 | } |
2611 | |
2612 | static void compute_chapters_end(AVFormatContext *s) |
2613 | { |
2614 | unsigned int i, j; |
2615 | int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time); |
2616 | |
2617 | for (i = 0; i < s->nb_chapters; i++) |
2618 | if (s->chapters[i]->end == AV_NOPTS_VALUE) { |
2619 | AVChapter *ch = s->chapters[i]; |
2620 | int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base) |
2621 | : INT64_MAX; |
2622 | |
2623 | for (j = 0; j < s->nb_chapters; j++) { |
2624 | AVChapter *ch1 = s->chapters[j]; |
2625 | int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base); |
2626 | if (j != i && next_start > ch->start && next_start < end) |
2627 | end = next_start; |
2628 | } |
2629 | ch->end = (end == INT64_MAX) ? ch->start : end; |
2630 | } |
2631 | } |
2632 | |
2633 | static int get_std_framerate(int i){ |
2634 | if(i<60*12) return (i+1)*1001; |
2635 | else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12; |
2636 | } |
2637 | |
2638 | /* |
2639 | * Is the time base unreliable. |
2640 | * This is a heuristic to balance between quick acceptance of the values in |
2641 | * the headers vs. some extra checks. |
2642 | * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps. |
2643 | * MPEG-2 commonly misuses field repeat flags to store different framerates. |
2644 | * And there are "variable" fps files this needs to detect as well. |
2645 | */ |
2646 | static int tb_unreliable(AVCodecContext *c){ |
2647 | if( c->time_base.den >= 101L*c->time_base.num |
2648 | || c->time_base.den < 5L*c->time_base.num |
2649 | /* || c->codec_tag == AV_RL32("DIVX") |
2650 | || c->codec_tag == AV_RL32("XVID")*/ |
2651 | || c->codec_tag == AV_RL32("mp4v") |
2652 | || c->codec_id == AV_CODEC_ID_MPEG2VIDEO |
2653 | || c->codec_id == AV_CODEC_ID_H264 |
2654 | ) |
2655 | return 1; |
2656 | return 0; |
2657 | } |
2658 | |
2659 | #if FF_API_FORMAT_PARAMETERS |
2660 | int av_find_stream_info(AVFormatContext *ic) |
2661 | { |
2662 | return avformat_find_stream_info(ic, NULL); |
2663 | } |
2664 | #endif |
2665 | |
2666 | int ff_alloc_extradata(AVCodecContext *avctx, int size) |
2667 | { |
2668 | int ret; |
2669 | |
2670 | if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { |
2671 | avctx->extradata_size = 0; |
2672 | return AVERROR(EINVAL); |
2673 | } |
2674 | avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE); |
2675 | if (avctx->extradata) { |
2676 | memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
2677 | avctx->extradata_size = size; |
2678 | ret = 0; |
2679 | } else { |
2680 | avctx->extradata_size = 0; |
2681 | ret = AVERROR(ENOMEM); |
2682 | } |
2683 | return ret; |
2684 | } |
2685 | |
2686 | int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options) |
2687 | { |
2688 | int i, count, ret = 0, j; |
2689 | int64_t read_size; |
2690 | AVStream *st; |
2691 | AVPacket pkt1, *pkt; |
2692 | int64_t old_offset = avio_tell(ic->pb); |
2693 | int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those |
2694 | int flush_codecs = ic->probesize > 0; |
2695 | |
2696 | if(ic->pb) |
2697 | av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb)); |
2698 | |
2699 | for(i=0;i<ic->nb_streams;i++) { |
2700 | const AVCodec *codec; |
2701 | AVDictionary *thread_opt = NULL; |
2702 | st = ic->streams[i]; |
2703 | |
2704 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || |
2705 | st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { |
2706 | /* if(!st->time_base.num) |
2707 | st->time_base= */ |
2708 | if(!st->codec->time_base.num) |
2709 | st->codec->time_base= st->time_base; |
2710 | } |
2711 | //only for the split stuff |
2712 | if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) { |
2713 | st->parser = av_parser_init(st->codec->codec_id); |
2714 | if(st->parser){ |
2715 | if(st->need_parsing == AVSTREAM_PARSE_HEADERS){ |
2716 | st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES; |
2717 | } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) { |
2718 | st->parser->flags |= PARSER_FLAG_USE_CODEC_TS; |
2719 | } |
2720 | } else if (st->need_parsing) { |
2721 | av_log(ic, AV_LOG_VERBOSE, "parser not found for codec " |
2722 | "%s, packets or times may be invalid.\n", |
2723 | avcodec_get_name(st->codec->codec_id)); |
2724 | } |
2725 | } |
2726 | codec = find_decoder(ic, st, st->codec->codec_id); |
2727 | |
2728 | /* force thread count to 1 since the h264 decoder will not extract SPS |
2729 | * and PPS to extradata during multi-threaded decoding */ |
2730 | av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0); |
2731 | |
2732 | /* Ensure that subtitle_header is properly set. */ |
2733 | if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE |
2734 | && codec && !st->codec->codec) |
2735 | avcodec_open2(st->codec, codec, options ? &options[i] |
2736 | : &thread_opt); |
2737 | |
2738 | //try to just open decoders, in case this is enough to get parameters |
2739 | if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) { |
2740 | if (codec && !st->codec->codec) |
2741 | avcodec_open2(st->codec, codec, options ? &options[i] |
2742 | : &thread_opt); |
2743 | } |
2744 | if (!options) |
2745 | av_dict_free(&thread_opt); |
2746 | } |
2747 | |
2748 | for (i=0; i<ic->nb_streams; i++) { |
2749 | #if FF_API_R_FRAME_RATE |
2750 | ic->streams[i]->info->last_dts = AV_NOPTS_VALUE; |
2751 | #endif |
2752 | ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE; |
2753 | ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE; |
2754 | } |
2755 | |
2756 | count = 0; |
2757 | read_size = 0; |
2758 | for(;;) { |
2759 | if (ff_check_interrupt(&ic->interrupt_callback)){ |
2760 | ret= AVERROR_EXIT; |
2761 | av_log(ic, AV_LOG_DEBUG, "interrupted\n"); |
2762 | break; |
2763 | } |
2764 | |
2765 | /* check if one codec still needs to be handled */ |
2766 | for(i=0;i<ic->nb_streams;i++) { |
2767 | int fps_analyze_framecount = 20; |
2768 | |
2769 | st = ic->streams[i]; |
2770 | if (!has_codec_parameters(st, NULL)) |
2771 | break; |
2772 | /* if the timebase is coarse (like the usual millisecond precision |
2773 | of mkv), we need to analyze more frames to reliably arrive at |
2774 | the correct fps */ |
2775 | if (av_q2d(st->time_base) > 0.0005) |
2776 | fps_analyze_framecount *= 2; |
2777 | if (ic->fps_probe_size >= 0) |
2778 | fps_analyze_framecount = ic->fps_probe_size; |
2779 | if (st->disposition & AV_DISPOSITION_ATTACHED_PIC) |
2780 | fps_analyze_framecount = 0; |
2781 | /* variable fps and no guess at the real fps */ |
2782 | if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num) |
2783 | && st->info->duration_count < fps_analyze_framecount |
2784 | && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
2785 | break; |
2786 | if(st->parser && st->parser->parser->split && !st->codec->extradata) |
2787 | break; |
2788 | if (st->first_dts == AV_NOPTS_VALUE && |
2789 | (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || |
2790 | st->codec->codec_type == AVMEDIA_TYPE_AUDIO)) |
2791 | break; |
2792 | } |
2793 | if (i == ic->nb_streams) { |
2794 | /* NOTE: if the format has no header, then we need to read |
2795 | some packets to get most of the streams, so we cannot |
2796 | stop here */ |
2797 | if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) { |
2798 | /* if we found the info for all the codecs, we can stop */ |
2799 | ret = count; |
2800 | av_log(ic, AV_LOG_DEBUG, "All info found\n"); |
2801 | flush_codecs = 0; |
2802 | break; |
2803 | } |
2804 | } |
2805 | /* we did not get all the codec info, but we read too much data */ |
2806 | if (read_size >= ic->probesize) { |
2807 | ret = count; |
2808 | av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize); |
2809 | for (i = 0; i < ic->nb_streams; i++) |
2810 | if (!ic->streams[i]->r_frame_rate.num && |
2811 | ic->streams[i]->info->duration_count <= 1 && |
2812 | strcmp(ic->iformat->name, "image2")) |
2813 | av_log(ic, AV_LOG_WARNING, |
2814 | "Stream #%d: not enough frames to estimate rate; " |
2815 | "consider increasing probesize\n", i); |
2816 | break; |
2817 | } |
2818 | |
2819 | /* NOTE: a new stream can be added there if no header in file |
2820 | (AVFMTCTX_NOHEADER) */ |
2821 | ret = read_frame_internal(ic, &pkt1); |
2822 | if (ret == AVERROR(EAGAIN)) |
2823 | continue; |
2824 | |
2825 | if (ret < 0) { |
2826 | /* EOF or error*/ |
2827 | break; |
2828 | } |
2829 | |
2830 | if (ic->flags & AVFMT_FLAG_NOBUFFER) |
2831 | free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end); |
2832 | { |
2833 | pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1, |
2834 | &ic->packet_buffer_end); |
2835 | if (!pkt) { |
2836 | ret = AVERROR(ENOMEM); |
2837 | goto find_stream_info_err; |
2838 | } |
2839 | if ((ret = av_dup_packet(pkt)) < 0) |
2840 | goto find_stream_info_err; |
2841 | } |
2842 | |
2843 | read_size += pkt->size; |
2844 | |
2845 | st = ic->streams[pkt->stream_index]; |
2846 | if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) { |
2847 | /* check for non-increasing dts */ |
2848 | if (st->info->fps_last_dts != AV_NOPTS_VALUE && |
2849 | st->info->fps_last_dts >= pkt->dts) { |
2850 | av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: " |
2851 | "packet %d with DTS %"PRId64", packet %d with DTS " |
2852 | "%"PRId64"\n", st->index, st->info->fps_last_dts_idx, |
2853 | st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts); |
2854 | st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE; |
2855 | } |
2856 | /* check for a discontinuity in dts - if the difference in dts |
2857 | * is more than 1000 times the average packet duration in the sequence, |
2858 | * we treat it as a discontinuity */ |
2859 | if (st->info->fps_last_dts != AV_NOPTS_VALUE && |
2860 | st->info->fps_last_dts_idx > st->info->fps_first_dts_idx && |
2861 | (pkt->dts - st->info->fps_last_dts) / 1000 > |
2862 | (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) { |
2863 | av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: " |
2864 | "packet %d with DTS %"PRId64", packet %d with DTS " |
2865 | "%"PRId64"\n", st->index, st->info->fps_last_dts_idx, |
2866 | st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts); |
2867 | st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE; |
2868 | } |
2869 | |
2870 | /* update stored dts values */ |
2871 | if (st->info->fps_first_dts == AV_NOPTS_VALUE) { |
2872 | st->info->fps_first_dts = pkt->dts; |
2873 | st->info->fps_first_dts_idx = st->codec_info_nb_frames; |
2874 | } |
2875 | st->info->fps_last_dts = pkt->dts; |
2876 | st->info->fps_last_dts_idx = st->codec_info_nb_frames; |
2877 | } |
2878 | if (st->codec_info_nb_frames>1) { |
2879 | int64_t t=0; |
2880 | if (st->time_base.den > 0) |
2881 | t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q); |
2882 | if (st->avg_frame_rate.num > 0) |
2883 | t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q)); |
2884 | |
2885 | if ( t==0 |
2886 | && st->codec_info_nb_frames>30 |
2887 | && st->info->fps_first_dts != AV_NOPTS_VALUE |
2888 | && st->info->fps_last_dts != AV_NOPTS_VALUE) |
2889 | t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q)); |
2890 | |
2891 | if (t >= ic->max_analyze_duration) { |
2892 | av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t); |
2893 | break; |
2894 | } |
2895 | if (pkt->duration) { |
2896 | st->info->codec_info_duration += pkt->duration; |
2897 | st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2; |
2898 | } |
2899 | } |
2900 | #if FF_API_R_FRAME_RATE |
2901 | { |
2902 | int64_t last = st->info->last_dts; |
2903 | |
2904 | if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last |
2905 | && pkt->dts - (uint64_t)last < INT64_MAX){ |
2906 | double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base); |
2907 | int64_t duration= pkt->dts - last; |
2908 | |
2909 | if (!st->info->duration_error) |
2910 | st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2); |
2911 | if (!st->info->duration_error) |
2912 | return AVERROR(ENOMEM); |
2913 | |
2914 | // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
2915 | // av_log(NULL, AV_LOG_ERROR, "%f\n", dts); |
2916 | for (i=0; i<MAX_STD_TIMEBASES; i++) { |
2917 | int framerate= get_std_framerate(i); |
2918 | double sdts= dts*framerate/(1001*12); |
2919 | for(j=0; j<2; j++){ |
2920 | int64_t ticks= llrint(sdts+j*0.5); |
2921 | double error= sdts - ticks + j*0.5; |
2922 | st->info->duration_error[j][0][i] += error; |
2923 | st->info->duration_error[j][1][i] += error*error; |
2924 | } |
2925 | } |
2926 | st->info->duration_count++; |
2927 | // ignore the first 4 values, they might have some random jitter |
2928 | if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last)) |
2929 | st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration); |
2930 | } |
2931 | if (pkt->dts != AV_NOPTS_VALUE) |
2932 | st->info->last_dts = pkt->dts; |
2933 | } |
2934 | #endif |
2935 | if(st->parser && st->parser->parser->split && !st->codec->extradata){ |
2936 | int i= st->parser->parser->split(st->codec, pkt->data, pkt->size); |
2937 | if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) { |
2938 | if (ff_alloc_extradata(st->codec, i)) |
2939 | return AVERROR(ENOMEM); |
2940 | memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size); |
2941 | } |
2942 | } |
2943 | |
2944 | /* if still no information, we try to open the codec and to |
2945 | decompress the frame. We try to avoid that in most cases as |
2946 | it takes longer and uses more memory. For MPEG-4, we need to |
2947 | decompress for QuickTime. |
2948 | |
2949 | If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at |
2950 | least one frame of codec data, this makes sure the codec initializes |
2951 | the channel configuration and does not only trust the values from the container. |
2952 | */ |
2953 | try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL); |
2954 | |
2955 | st->codec_info_nb_frames++; |
2956 | count++; |
2957 | } |
2958 | |
2959 | if (flush_codecs) { |
2960 | AVPacket empty_pkt = { 0 }; |
2961 | int err = 0; |
2962 | av_init_packet(&empty_pkt); |
2963 | |
2964 | for(i=0;i<ic->nb_streams;i++) { |
2965 | |
2966 | st = ic->streams[i]; |
2967 | |
2968 | /* flush the decoders */ |
2969 | if (st->info->found_decoder == 1) { |
2970 | do { |
2971 | err = try_decode_frame(ic, st, &empty_pkt, |
2972 | (options && i < orig_nb_streams) ? |
2973 | &options[i] : NULL); |
2974 | } while (err > 0 && !has_codec_parameters(st, NULL)); |
2975 | |
2976 | if (err < 0) { |
2977 | av_log(ic, AV_LOG_INFO, |
2978 | "decoding for stream %d failed\n", st->index); |
2979 | } |
2980 | } |
2981 | } |
2982 | } |
2983 | |
2984 | // close codecs which were opened in try_decode_frame() |
2985 | for(i=0;i<ic->nb_streams;i++) { |
2986 | st = ic->streams[i]; |
2987 | avcodec_close(st->codec); |
2988 | } |
2989 | for(i=0;i<ic->nb_streams;i++) { |
2990 | st = ic->streams[i]; |
2991 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
2992 | if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){ |
2993 | uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt); |
2994 | if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt) |
2995 | st->codec->codec_tag= tag; |
2996 | } |
2997 | |
2998 | /* estimate average framerate if not set by demuxer */ |
2999 | if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) { |
3000 | int best_fps = 0; |
3001 | double best_error = 0.01; |
3002 | |
3003 | if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2|| |
3004 | st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den || |
3005 | st->info->codec_info_duration < 0) |
3006 | continue; |
3007 | av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, |
3008 | st->info->codec_info_duration_fields*(int64_t)st->time_base.den, |
3009 | st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000); |
3010 | |
3011 | /* round guessed framerate to a "standard" framerate if it's |
3012 | * within 1% of the original estimate*/ |
3013 | for (j = 1; j < MAX_STD_TIMEBASES; j++) { |
3014 | AVRational std_fps = { get_std_framerate(j), 12*1001 }; |
3015 | double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1); |
3016 | |
3017 | if (error < best_error) { |
3018 | best_error = error; |
3019 | best_fps = std_fps.num; |
3020 | } |
3021 | } |
3022 | if (best_fps) { |
3023 | av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, |
3024 | best_fps, 12*1001, INT_MAX); |
3025 | } |
3026 | } |
3027 | // the check for tb_unreliable() is not completely correct, since this is not about handling |
3028 | // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g. |
3029 | // ipmovie.c produces. |
3030 | if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num) |
3031 | av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX); |
3032 | if (st->info->duration_count>1 && !st->r_frame_rate.num |
3033 | && tb_unreliable(st->codec)) { |
3034 | int num = 0; |
3035 | double best_error= 0.01; |
3036 | |
3037 | for (j=0; j<MAX_STD_TIMEBASES; j++) { |
3038 | int k; |
3039 | |
3040 | if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j)) |
3041 | continue; |
3042 | if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j)) |
3043 | continue; |
3044 | for(k=0; k<2; k++){ |
3045 | int n= st->info->duration_count; |
3046 | double a= st->info->duration_error[k][0][j] / n; |
3047 | double error= st->info->duration_error[k][1][j]/n - a*a; |
3048 | |
3049 | if(error < best_error && best_error> 0.000000001){ |
3050 | best_error= error; |
3051 | num = get_std_framerate(j); |
3052 | } |
3053 | if(error < 0.02) |
3054 | av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error); |
3055 | } |
3056 | } |
3057 | // do not increase frame rate by more than 1 % in order to match a standard rate. |
3058 | if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate))) |
3059 | av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX); |
3060 | } |
3061 | |
3062 | if (!st->r_frame_rate.num){ |
3063 | if( st->codec->time_base.den * (int64_t)st->time_base.num |
3064 | <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){ |
3065 | st->r_frame_rate.num = st->codec->time_base.den; |
3066 | st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame; |
3067 | }else{ |
3068 | st->r_frame_rate.num = st->time_base.den; |
3069 | st->r_frame_rate.den = st->time_base.num; |
3070 | } |
3071 | } |
3072 | }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
3073 | if(!st->codec->bits_per_coded_sample) |
3074 | st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id); |
3075 | // set stream disposition based on audio service type |
3076 | switch (st->codec->audio_service_type) { |
3077 | case AV_AUDIO_SERVICE_TYPE_EFFECTS: |
3078 | st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break; |
3079 | case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED: |
3080 | st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break; |
3081 | case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED: |
3082 | st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break; |
3083 | case AV_AUDIO_SERVICE_TYPE_COMMENTARY: |
3084 | st->disposition = AV_DISPOSITION_COMMENT; break; |
3085 | case AV_AUDIO_SERVICE_TYPE_KARAOKE: |
3086 | st->disposition = AV_DISPOSITION_KARAOKE; break; |
3087 | } |
3088 | } |
3089 | } |
3090 | |
3091 | if(ic->probesize) |
3092 | estimate_timings(ic, old_offset); |
3093 | |
3094 | if (ret >= 0 && ic->nb_streams) |
3095 | ret = -1; /* we could not have all the codec parameters before EOF */ |
3096 | for(i=0;i<ic->nb_streams;i++) { |
3097 | const char *errmsg; |
3098 | st = ic->streams[i]; |
3099 | if (!has_codec_parameters(st, &errmsg)) { |
3100 | char buf[256]; |
3101 | avcodec_string(buf, sizeof(buf), st->codec, 0); |
3102 | av_log(ic, AV_LOG_WARNING, |
3103 | "Could not find codec parameters for stream %d (%s): %s\n" |
3104 | "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n", |
3105 | i, buf, errmsg); |
3106 | } else { |
3107 | ret = 0; |
3108 | } |
3109 | } |
3110 | |
3111 | compute_chapters_end(ic); |
3112 | |
3113 | find_stream_info_err: |
3114 | for (i=0; i < ic->nb_streams; i++) { |
3115 | st = ic->streams[i]; |
3116 | if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO) |
3117 | ic->streams[i]->codec->thread_count = 0; |
3118 | if (st->info) |
3119 | av_freep(&st->info->duration_error); |
3120 | av_freep(&ic->streams[i]->info); |
3121 | } |
3122 | if(ic->pb) |
3123 | av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb)); |
3124 | return ret; |
3125 | } |
3126 | |
3127 | AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s) |
3128 | { |
3129 | int i, j; |
3130 | |
3131 | for (i = 0; i < ic->nb_programs; i++) { |
3132 | if (ic->programs[i] == last) { |
3133 | last = NULL; |
3134 | } else { |
3135 | if (!last) |
3136 | for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++) |
3137 | if (ic->programs[i]->stream_index[j] == s) |
3138 | return ic->programs[i]; |
3139 | } |
3140 | } |
3141 | return NULL; |
3142 | } |
3143 | |
3144 | int av_find_best_stream(AVFormatContext *ic, |
3145 | enum AVMediaType type, |
3146 | int wanted_stream_nb, |
3147 | int related_stream, |
3148 | AVCodec **decoder_ret, |
3149 | int flags) |
3150 | { |
3151 | int i, nb_streams = ic->nb_streams; |
3152 | int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe; |
3153 | unsigned *program = NULL; |
3154 | AVCodec *decoder = NULL, *best_decoder = NULL; |
3155 | |
3156 | if (related_stream >= 0 && wanted_stream_nb < 0) { |
3157 | AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream); |
3158 | if (p) { |
3159 | program = p->stream_index; |
3160 | nb_streams = p->nb_stream_indexes; |
3161 | } |
3162 | } |
3163 | for (i = 0; i < nb_streams; i++) { |
3164 | int real_stream_index = program ? program[i] : i; |
3165 | AVStream *st = ic->streams[real_stream_index]; |
3166 | AVCodecContext *avctx = st->codec; |
3167 | if (avctx->codec_type != type) |
3168 | continue; |
3169 | if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb) |
3170 | continue; |
3171 | if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED)) |
3172 | continue; |
3173 | if (decoder_ret) { |
3174 | decoder = find_decoder(ic, st, st->codec->codec_id); |
3175 | if (!decoder) { |
3176 | if (ret < 0) |
3177 | ret = AVERROR_DECODER_NOT_FOUND; |
3178 | continue; |
3179 | } |
3180 | } |
3181 | count = st->codec_info_nb_frames; |
3182 | bitrate = avctx->bit_rate; |
3183 | multiframe = FFMIN(5, count); |
3184 | if ((best_multiframe > multiframe) || |
3185 | (best_multiframe == multiframe && best_bitrate > bitrate) || |
3186 | (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count)) |
3187 | continue; |
3188 | best_count = count; |
3189 | best_bitrate = bitrate; |
3190 | best_multiframe = multiframe; |
3191 | ret = real_stream_index; |
3192 | best_decoder = decoder; |
3193 | if (program && i == nb_streams - 1 && ret < 0) { |
3194 | program = NULL; |
3195 | nb_streams = ic->nb_streams; |
3196 | i = 0; /* no related stream found, try again with everything */ |
3197 | } |
3198 | } |
3199 | if (decoder_ret) |
3200 | *decoder_ret = best_decoder; |
3201 | return ret; |
3202 | } |
3203 | |
3204 | /*******************************************************/ |
3205 | |
3206 | int av_read_play(AVFormatContext *s) |
3207 | { |
3208 | if (s->iformat->read_play) |
3209 | return s->iformat->read_play(s); |
3210 | if (s->pb) |
3211 | return avio_pause(s->pb, 0); |
3212 | return AVERROR(ENOSYS); |
3213 | } |
3214 | |
3215 | int av_read_pause(AVFormatContext *s) |
3216 | { |
3217 | if (s->iformat->read_pause) |
3218 | return s->iformat->read_pause(s); |
3219 | if (s->pb) |
3220 | return avio_pause(s->pb, 1); |
3221 | return AVERROR(ENOSYS); |
3222 | } |
3223 | |
3224 | void ff_free_stream(AVFormatContext *s, AVStream *st){ |
3225 | av_assert0(s->nb_streams>0); |
3226 | av_assert0(s->streams[ s->nb_streams-1 ] == st); |
3227 | |
3228 | if (st->parser) { |
3229 | av_parser_close(st->parser); |
3230 | } |
3231 | if (st->attached_pic.data) |
3232 | av_free_packet(&st->attached_pic); |
3233 | av_dict_free(&st->metadata); |
3234 | av_freep(&st->probe_data.buf); |
3235 | av_freep(&st->index_entries); |
3236 | av_freep(&st->codec->extradata); |
3237 | av_freep(&st->codec->subtitle_header); |
3238 | av_freep(&st->codec); |
3239 | av_freep(&st->priv_data); |
3240 | if (st->info) |
3241 | av_freep(&st->info->duration_error); |
3242 | av_freep(&st->info); |
3243 | av_freep(&s->streams[ --s->nb_streams ]); |
3244 | } |
3245 | |
3246 | void avformat_free_context(AVFormatContext *s) |
3247 | { |
3248 | int i; |
3249 | |
3250 | if (!s) |
3251 | return; |
3252 | |
3253 | if(s->cover_data) |
3254 | av_free(s->cover_data); |
3255 | |
3256 | av_opt_free(s); |
3257 | if (s->iformat && s->iformat->priv_class && s->priv_data) |
3258 | av_opt_free(s->priv_data); |
3259 | |
3260 | for(i=s->nb_streams-1; i>=0; i--) { |
3261 | ff_free_stream(s, s->streams[i]); |
3262 | } |
3263 | for(i=s->nb_programs-1; i>=0; i--) { |
3264 | av_dict_free(&s->programs[i]->metadata); |
3265 | av_freep(&s->programs[i]->stream_index); |
3266 | av_freep(&s->programs[i]); |
3267 | } |
3268 | av_freep(&s->programs); |
3269 | av_freep(&s->priv_data); |
3270 | while(s->nb_chapters--) { |
3271 | av_dict_free(&s->chapters[s->nb_chapters]->metadata); |
3272 | av_freep(&s->chapters[s->nb_chapters]); |
3273 | } |
3274 | av_freep(&s->chapters); |
3275 | av_dict_free(&s->metadata); |
3276 | av_freep(&s->streams); |
3277 | av_free(s); |
3278 | } |
3279 | |
3280 | #if FF_API_CLOSE_INPUT_FILE |
3281 | void av_close_input_file(AVFormatContext *s) |
3282 | { |
3283 | avformat_close_input(&s); |
3284 | } |
3285 | #endif |
3286 | |
3287 | void avformat_close_input(AVFormatContext **ps) |
3288 | { |
3289 | AVFormatContext *s; |
3290 | AVIOContext *pb; |
3291 | |
3292 | if (!ps || !*ps) |
3293 | return; |
3294 | |
3295 | s = *ps; |
3296 | pb = s->pb; |
3297 | |
3298 | if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) || |
3299 | (s->flags & AVFMT_FLAG_CUSTOM_IO)) |
3300 | pb = NULL; |
3301 | |
3302 | flush_packet_queue(s); |
3303 | |
3304 | if (s->iformat) { |
3305 | if (s->iformat->read_close) |
3306 | s->iformat->read_close(s); |
3307 | } |
3308 | |
3309 | avformat_free_context(s); |
3310 | |
3311 | *ps = NULL; |
3312 | |
3313 | avio_close(pb); |
3314 | } |
3315 | |
3316 | #if FF_API_NEW_STREAM |
3317 | AVStream *av_new_stream(AVFormatContext *s, int id) |
3318 | { |
3319 | AVStream *st = avformat_new_stream(s, NULL); |
3320 | if (st) |
3321 | st->id = id; |
3322 | return st; |
3323 | } |
3324 | #endif |
3325 | |
3326 | AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c) |
3327 | { |
3328 | AVStream *st; |
3329 | int i; |
3330 | AVStream **streams; |
3331 | |
3332 | if (s->nb_streams >= INT_MAX/sizeof(*streams)) |
3333 | return NULL; |
3334 | streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams)); |
3335 | if (!streams) |
3336 | return NULL; |
3337 | s->streams = streams; |
3338 | |
3339 | st = av_mallocz(sizeof(AVStream)); |
3340 | if (!st) |
3341 | return NULL; |
3342 | if (!(st->info = av_mallocz(sizeof(*st->info)))) { |
3343 | av_free(st); |
3344 | return NULL; |
3345 | } |
3346 | st->info->last_dts = AV_NOPTS_VALUE; |
3347 | |
3348 | st->codec = avcodec_alloc_context3(c); |
3349 | if (s->iformat) { |
3350 | /* no default bitrate if decoding */ |
3351 | st->codec->bit_rate = 0; |
3352 | } |
3353 | st->index = s->nb_streams; |
3354 | st->start_time = AV_NOPTS_VALUE; |
3355 | st->duration = AV_NOPTS_VALUE; |
3356 | /* we set the current DTS to 0 so that formats without any timestamps |
3357 | but durations get some timestamps, formats with some unknown |
3358 | timestamps have their first few packets buffered and the |
3359 | timestamps corrected before they are returned to the user */ |
3360 | st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0; |
3361 | st->first_dts = AV_NOPTS_VALUE; |
3362 | st->probe_packets = MAX_PROBE_PACKETS; |
3363 | st->pts_wrap_reference = AV_NOPTS_VALUE; |
3364 | st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE; |
3365 | |
3366 | /* default pts setting is MPEG-like */ |
3367 | avpriv_set_pts_info(st, 33, 1, 90000); |
3368 | st->last_IP_pts = AV_NOPTS_VALUE; |
3369 | for(i=0; i<MAX_REORDER_DELAY+1; i++) |
3370 | st->pts_buffer[i]= AV_NOPTS_VALUE; |
3371 | |
3372 | st->sample_aspect_ratio = (AVRational){0,1}; |
3373 | |
3374 | #if FF_API_R_FRAME_RATE |
3375 | st->info->last_dts = AV_NOPTS_VALUE; |
3376 | #endif |
3377 | st->info->fps_first_dts = AV_NOPTS_VALUE; |
3378 | st->info->fps_last_dts = AV_NOPTS_VALUE; |
3379 | |
3380 | s->streams[s->nb_streams++] = st; |
3381 | return st; |
3382 | } |
3383 | |
3384 | AVProgram *av_new_program(AVFormatContext *ac, int id) |
3385 | { |
3386 | AVProgram *program=NULL; |
3387 | int i; |
3388 | |
3389 | av_dlog(ac, "new_program: id=0x%04x\n", id); |
3390 | |
3391 | for(i=0; i<ac->nb_programs; i++) |
3392 | if(ac->programs[i]->id == id) |
3393 | program = ac->programs[i]; |
3394 | |
3395 | if(!program){ |
3396 | program = av_mallocz(sizeof(AVProgram)); |
3397 | if (!program) |
3398 | return NULL; |
3399 | dynarray_add(&ac->programs, &ac->nb_programs, program); |
3400 | program->discard = AVDISCARD_NONE; |
3401 | } |
3402 | program->id = id; |
3403 | program->pts_wrap_reference = AV_NOPTS_VALUE; |
3404 | program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE; |
3405 | |
3406 | program->start_time = |
3407 | program->end_time = AV_NOPTS_VALUE; |
3408 | |
3409 | return program; |
3410 | } |
3411 | |
3412 | AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title) |
3413 | { |
3414 | AVChapter *chapter = NULL; |
3415 | int i; |
3416 | |
3417 | for(i=0; i<s->nb_chapters; i++) |
3418 | if(s->chapters[i]->id == id) |
3419 | chapter = s->chapters[i]; |
3420 | |
3421 | if(!chapter){ |
3422 | chapter= av_mallocz(sizeof(AVChapter)); |
3423 | if(!chapter) |
3424 | return NULL; |
3425 | dynarray_add(&s->chapters, &s->nb_chapters, chapter); |
3426 | } |
3427 | av_dict_set(&chapter->metadata, "title", title, 0); |
3428 | chapter->id = id; |
3429 | chapter->time_base= time_base; |
3430 | chapter->start = start; |
3431 | chapter->end = end; |
3432 | |
3433 | return chapter; |
3434 | } |
3435 | |
3436 | void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx) |
3437 | { |
3438 | int i, j; |
3439 | AVProgram *program=NULL; |
3440 | void *tmp; |
3441 | |
3442 | if (idx >= ac->nb_streams) { |
3443 | av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx); |
3444 | return; |
3445 | } |
3446 | |
3447 | for(i=0; i<ac->nb_programs; i++){ |
3448 | if(ac->programs[i]->id != progid) |
3449 | continue; |
3450 | program = ac->programs[i]; |
3451 | for(j=0; j<program->nb_stream_indexes; j++) |
3452 | if(program->stream_index[j] == idx) |
3453 | return; |
3454 | |
3455 | tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int)); |
3456 | if(!tmp) |
3457 | return; |
3458 | program->stream_index = tmp; |
3459 | program->stream_index[program->nb_stream_indexes++] = idx; |
3460 | return; |
3461 | } |
3462 | } |
3463 | |
3464 | static void print_fps(double d, const char *postfix){ |
3465 | uint64_t v= lrintf(d*100); |
3466 | if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix); |
3467 | else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix); |
3468 | else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix); |
3469 | } |
3470 | |
3471 | static void dump_metadata(void *ctx, AVDictionary *m, const char *indent) |
3472 | { |
3473 | if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){ |
3474 | AVDictionaryEntry *tag=NULL; |
3475 | |
3476 | av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent); |
3477 | while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
3478 | if(strcmp("language", tag->key)){ |
3479 | const char *p = tag->value; |
3480 | av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key); |
3481 | while(*p) { |
3482 | char tmp[256]; |
3483 | size_t len = strcspn(p, "\x8\xa\xb\xc\xd"); |
3484 | av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1)); |
3485 | av_log(ctx, AV_LOG_INFO, "%s", tmp); |
3486 | p += len; |
3487 | if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " "); |
3488 | if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, ""); |
3489 | if (*p) p++; |
3490 | } |
3491 | av_log(ctx, AV_LOG_INFO, "\n"); |
3492 | } |
3493 | } |
3494 | } |
3495 | } |
3496 | |
3497 | /* "user interface" functions */ |
3498 | static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output) |
3499 | { |
3500 | char buf[256]; |
3501 | int flags = (is_output ? ic->oformat->flags : ic->iformat->flags); |
3502 | AVStream *st = ic->streams[i]; |
3503 | int g = av_gcd(st->time_base.num, st->time_base.den); |
3504 | AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0); |
3505 | avcodec_string(buf, sizeof(buf), st->codec, is_output); |
3506 | av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i); |
3507 | /* the pid is an important information, so we display it */ |
3508 | /* XXX: add a generic system */ |
3509 | if (flags & AVFMT_SHOW_IDS) |
3510 | av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id); |
3511 | if (lang) |
3512 | av_log(NULL, AV_LOG_INFO, "(%s)", lang->value); |
3513 | av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g); |
3514 | av_log(NULL, AV_LOG_INFO, ": %s", buf); |
3515 | if (st->sample_aspect_ratio.num && // default |
3516 | av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) { |
3517 | AVRational display_aspect_ratio; |
3518 | av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, |
3519 | st->codec->width*st->sample_aspect_ratio.num, |
3520 | st->codec->height*st->sample_aspect_ratio.den, |
3521 | 1024*1024); |
3522 | av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d", |
3523 | st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, |
3524 | display_aspect_ratio.num, display_aspect_ratio.den); |
3525 | } |
3526 | if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){ |
3527 | if(st->avg_frame_rate.den && st->avg_frame_rate.num) |
3528 | print_fps(av_q2d(st->avg_frame_rate), "fps"); |
3529 | #if FF_API_R_FRAME_RATE |
3530 | if(st->r_frame_rate.den && st->r_frame_rate.num) |
3531 | print_fps(av_q2d(st->r_frame_rate), "tbr"); |
3532 | #endif |
3533 | if(st->time_base.den && st->time_base.num) |
3534 | print_fps(1/av_q2d(st->time_base), "tbn"); |
3535 | if(st->codec->time_base.den && st->codec->time_base.num) |
3536 | print_fps(1/av_q2d(st->codec->time_base), "tbc"); |
3537 | } |
3538 | if (st->disposition & AV_DISPOSITION_DEFAULT) |
3539 | av_log(NULL, AV_LOG_INFO, " (default)"); |
3540 | if (st->disposition & AV_DISPOSITION_DUB) |
3541 | av_log(NULL, AV_LOG_INFO, " (dub)"); |
3542 | if (st->disposition & AV_DISPOSITION_ORIGINAL) |
3543 | av_log(NULL, AV_LOG_INFO, " (original)"); |
3544 | if (st->disposition & AV_DISPOSITION_COMMENT) |
3545 | av_log(NULL, AV_LOG_INFO, " (comment)"); |
3546 | if (st->disposition & AV_DISPOSITION_LYRICS) |
3547 | av_log(NULL, AV_LOG_INFO, " (lyrics)"); |
3548 | if (st->disposition & AV_DISPOSITION_KARAOKE) |
3549 | av_log(NULL, AV_LOG_INFO, " (karaoke)"); |
3550 | if (st->disposition & AV_DISPOSITION_FORCED) |
3551 | av_log(NULL, AV_LOG_INFO, " (forced)"); |
3552 | if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) |
3553 | av_log(NULL, AV_LOG_INFO, " (hearing impaired)"); |
3554 | if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED) |
3555 | av_log(NULL, AV_LOG_INFO, " (visual impaired)"); |
3556 | if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS) |
3557 | av_log(NULL, AV_LOG_INFO, " (clean effects)"); |
3558 | av_log(NULL, AV_LOG_INFO, "\n"); |
3559 | dump_metadata(NULL, st->metadata, " "); |
3560 | } |
3561 | |
3562 | void av_dump_format(AVFormatContext *ic, |
3563 | int index, |
3564 | const char *url, |
3565 | int is_output) |
3566 | { |
3567 | int i; |
3568 | uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL; |
3569 | if (ic->nb_streams && !printed) |
3570 | return; |
3571 | |
3572 | av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n", |
3573 | is_output ? "Output" : "Input", |
3574 | index, |
3575 | is_output ? ic->oformat->name : ic->iformat->name, |
3576 | is_output ? "to" : "from", url); |
3577 | dump_metadata(NULL, ic->metadata, " "); |
3578 | if (!is_output) { |
3579 | av_log(NULL, AV_LOG_INFO, " Duration: "); |
3580 | if (ic->duration != AV_NOPTS_VALUE) { |
3581 | int hours, mins, secs, us; |
3582 | int64_t duration = ic->duration + 5000; |
3583 | secs = duration / AV_TIME_BASE; |
3584 | us = duration % AV_TIME_BASE; |
3585 | mins = secs / 60; |
3586 | secs %= 60; |
3587 | hours = mins / 60; |
3588 | mins %= 60; |
3589 | av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs, |
3590 | (100 * us) / AV_TIME_BASE); |
3591 | } else { |
3592 | av_log(NULL, AV_LOG_INFO, "N/A"); |
3593 | } |
3594 | if (ic->start_time != AV_NOPTS_VALUE) { |
3595 | int secs, us; |
3596 | av_log(NULL, AV_LOG_INFO, ", start: "); |
3597 | secs = ic->start_time / AV_TIME_BASE; |
3598 | us = abs(ic->start_time % AV_TIME_BASE); |
3599 | av_log(NULL, AV_LOG_INFO, "%d.%06d", |
3600 | secs, (int)av_rescale(us, 1000000, AV_TIME_BASE)); |
3601 | } |
3602 | av_log(NULL, AV_LOG_INFO, ", bitrate: "); |
3603 | if (ic->bit_rate) { |
3604 | av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000); |
3605 | } else { |
3606 | av_log(NULL, AV_LOG_INFO, "N/A"); |
3607 | } |
3608 | av_log(NULL, AV_LOG_INFO, "\n"); |
3609 | } |
3610 | for (i = 0; i < ic->nb_chapters; i++) { |
3611 | AVChapter *ch = ic->chapters[i]; |
3612 | av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i); |
3613 | av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base)); |
3614 | av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base)); |
3615 | |
3616 | dump_metadata(NULL, ch->metadata, " "); |
3617 | } |
3618 | if(ic->nb_programs) { |
3619 | int j, k, total = 0; |
3620 | for(j=0; j<ic->nb_programs; j++) { |
3621 | AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata, |
3622 | "name", NULL, 0); |
3623 | av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id, |
3624 | name ? name->value : ""); |
3625 | dump_metadata(NULL, ic->programs[j]->metadata, " "); |
3626 | for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) { |
3627 | dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output); |
3628 | printed[ic->programs[j]->stream_index[k]] = 1; |
3629 | } |
3630 | total += ic->programs[j]->nb_stream_indexes; |
3631 | } |
3632 | if (total < ic->nb_streams) |
3633 | av_log(NULL, AV_LOG_INFO, " No Program\n"); |
3634 | } |
3635 | for(i=0;i<ic->nb_streams;i++) |
3636 | if (!printed[i]) |
3637 | dump_stream_format(ic, i, index, is_output); |
3638 | |
3639 | av_free(printed); |
3640 | } |
3641 | |
3642 | uint64_t ff_ntp_time(void) |
3643 | { |
3644 | return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US; |
3645 | } |
3646 | |
3647 | int av_get_frame_filename(char *buf, int buf_size, |
3648 | const char *path, int number) |
3649 | { |
3650 | const char *p; |
3651 | char *q, buf1[20], c; |
3652 | int nd, len, percentd_found; |
3653 | |
3654 | q = buf; |
3655 | p = path; |
3656 | percentd_found = 0; |
3657 | for(;;) { |
3658 | c = *p++; |
3659 | if (c == '\0') |
3660 | break; |
3661 | if (c == '%') { |
3662 | do { |
3663 | nd = 0; |
3664 | while (av_isdigit(*p)) { |
3665 | nd = nd * 10 + *p++ - '0'; |
3666 | } |
3667 | c = *p++; |
3668 | } while (av_isdigit(c)); |
3669 | |
3670 | switch(c) { |
3671 | case '%': |
3672 | goto addchar; |
3673 | case 'd': |
3674 | if (percentd_found) |
3675 | goto fail; |
3676 | percentd_found = 1; |
3677 | snprintf(buf1, sizeof(buf1), "%0*d", nd, number); |
3678 | len = strlen(buf1); |
3679 | if ((q - buf + len) > buf_size - 1) |
3680 | goto fail; |
3681 | memcpy(q, buf1, len); |
3682 | q += len; |
3683 | break; |
3684 | default: |
3685 | goto fail; |
3686 | } |
3687 | } else { |
3688 | addchar: |
3689 | if ((q - buf) < buf_size - 1) |
3690 | *q++ = c; |
3691 | } |
3692 | } |
3693 | if (!percentd_found) |
3694 | goto fail; |
3695 | *q = '\0'; |
3696 | return 0; |
3697 | fail: |
3698 | *q = '\0'; |
3699 | return -1; |
3700 | } |
3701 | |
3702 | static void hex_dump_internal(void *avcl, FILE *f, int level, |
3703 | const uint8_t *buf, int size) |
3704 | { |
3705 | int len, i, j, c; |
3706 | #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0) |
3707 | |
3708 | for(i=0;i<size;i+=16) { |
3709 | len = size - i; |
3710 | if (len > 16) |
3711 | len = 16; |
3712 | PRINT("%08x ", i); |
3713 | for(j=0;j<16;j++) { |
3714 | if (j < len) |
3715 | PRINT(" %02x", buf[i+j]); |
3716 | else |
3717 | PRINT(" "); |
3718 | } |
3719 | PRINT(" "); |
3720 | for(j=0;j<len;j++) { |
3721 | c = buf[i+j]; |
3722 | if (c < ' ' || c > '~') |
3723 | c = '.'; |
3724 | PRINT("%c", c); |
3725 | } |
3726 | PRINT("\n"); |
3727 | } |
3728 | #undef PRINT |
3729 | } |
3730 | |
3731 | void av_hex_dump(FILE *f, const uint8_t *buf, int size) |
3732 | { |
3733 | hex_dump_internal(NULL, f, 0, buf, size); |
3734 | } |
3735 | |
3736 | void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size) |
3737 | { |
3738 | hex_dump_internal(avcl, NULL, level, buf, size); |
3739 | } |
3740 | |
3741 | static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base) |
3742 | { |
3743 | #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0) |
3744 | PRINT("stream #%d:\n", pkt->stream_index); |
3745 | PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0)); |
3746 | PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base)); |
3747 | /* DTS is _always_ valid after av_read_frame() */ |
3748 | PRINT(" dts="); |
3749 | if (pkt->dts == AV_NOPTS_VALUE) |
3750 | PRINT("N/A"); |
3751 | else |
3752 | PRINT("%0.3f", pkt->dts * av_q2d(time_base)); |
3753 | /* PTS may not be known if B-frames are present. */ |
3754 | PRINT(" pts="); |
3755 | if (pkt->pts == AV_NOPTS_VALUE) |
3756 | PRINT("N/A"); |
3757 | else |
3758 | PRINT("%0.3f", pkt->pts * av_q2d(time_base)); |
3759 | PRINT("\n"); |
3760 | PRINT(" size=%d\n", pkt->size); |
3761 | #undef PRINT |
3762 | if (dump_payload) |
3763 | av_hex_dump(f, pkt->data, pkt->size); |
3764 | } |
3765 | |
3766 | void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st) |
3767 | { |
3768 | pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base); |
3769 | } |
3770 | |
3771 | void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload, |
3772 | AVStream *st) |
3773 | { |
3774 | pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base); |
3775 | } |
3776 | |
3777 | void av_url_split(char *proto, int proto_size, |
3778 | char *authorization, int authorization_size, |
3779 | char *hostname, int hostname_size, |
3780 | int *port_ptr, |
3781 | char *path, int path_size, |
3782 | const char *url) |
3783 | { |
3784 | const char *p, *ls, *ls2, *at, *at2, *col, *brk; |
3785 | |
3786 | if (port_ptr) *port_ptr = -1; |
3787 | if (proto_size > 0) proto[0] = 0; |
3788 | if (authorization_size > 0) authorization[0] = 0; |
3789 | if (hostname_size > 0) hostname[0] = 0; |
3790 | if (path_size > 0) path[0] = 0; |
3791 | |
3792 | /* parse protocol */ |
3793 | if ((p = strchr(url, ':'))) { |
3794 | av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url)); |
3795 | p++; /* skip ':' */ |
3796 | if (*p == '/') p++; |
3797 | if (*p == '/') p++; |
3798 | } else { |
3799 | /* no protocol means plain filename */ |
3800 | av_strlcpy(path, url, path_size); |
3801 | return; |
3802 | } |
3803 | |
3804 | /* separate path from hostname */ |
3805 | ls = strchr(p, '/'); |
3806 | ls2 = strchr(p, '?'); |
3807 | if(!ls) |
3808 | ls = ls2; |
3809 | else if (ls && ls2) |
3810 | ls = FFMIN(ls, ls2); |
3811 | if(ls) |
3812 | av_strlcpy(path, ls, path_size); |
3813 | else |
3814 | ls = &p[strlen(p)]; // XXX |
3815 | |
3816 | /* the rest is hostname, use that to parse auth/port */ |
3817 | if (ls != p) { |
3818 | /* authorization (user[:pass]@hostname) */ |
3819 | at2 = p; |
3820 | while ((at = strchr(p, '@')) && at < ls) { |
3821 | av_strlcpy(authorization, at2, |
3822 | FFMIN(authorization_size, at + 1 - at2)); |
3823 | p = at + 1; /* skip '@' */ |
3824 | } |
3825 | |
3826 | if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) { |
3827 | /* [host]:port */ |
3828 | av_strlcpy(hostname, p + 1, |
3829 | FFMIN(hostname_size, brk - p)); |
3830 | if (brk[1] == ':' && port_ptr) |
3831 | *port_ptr = atoi(brk + 2); |
3832 | } else if ((col = strchr(p, ':')) && col < ls) { |
3833 | av_strlcpy(hostname, p, |
3834 | FFMIN(col + 1 - p, hostname_size)); |
3835 | if (port_ptr) *port_ptr = atoi(col + 1); |
3836 | } else |
3837 | av_strlcpy(hostname, p, |
3838 | FFMIN(ls + 1 - p, hostname_size)); |
3839 | } |
3840 | } |
3841 | |
3842 | char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase) |
3843 | { |
3844 | int i; |
3845 | static const char hex_table_uc[16] = { '0', '1', '2', '3', |
3846 | '4', '5', '6', '7', |
3847 | '8', '9', 'A', 'B', |
3848 | 'C', 'D', 'E', 'F' }; |
3849 | static const char hex_table_lc[16] = { '0', '1', '2', '3', |
3850 | '4', '5', '6', '7', |
3851 | '8', '9', 'a', 'b', |
3852 | 'c', 'd', 'e', 'f' }; |
3853 | const char *hex_table = lowercase ? hex_table_lc : hex_table_uc; |
3854 | |
3855 | for(i = 0; i < s; i++) { |
3856 | buff[i * 2] = hex_table[src[i] >> 4]; |
3857 | buff[i * 2 + 1] = hex_table[src[i] & 0xF]; |
3858 | } |
3859 | |
3860 | return buff; |
3861 | } |
3862 | |
3863 | int ff_hex_to_data(uint8_t *data, const char *p) |
3864 | { |
3865 | int c, len, v; |
3866 | |
3867 | len = 0; |
3868 | v = 1; |
3869 | for (;;) { |
3870 | p += strspn(p, SPACE_CHARS); |
3871 | if (*p == '\0') |
3872 | break; |
3873 | c = av_toupper((unsigned char) *p++); |
3874 | if (c >= '0' && c <= '9') |
3875 | c = c - '0'; |
3876 | else if (c >= 'A' && c <= 'F') |
3877 | c = c - 'A' + 10; |
3878 | else |
3879 | break; |
3880 | v = (v << 4) | c; |
3881 | if (v & 0x100) { |
3882 | if (data) |
3883 | data[len] = v; |
3884 | len++; |
3885 | v = 1; |
3886 | } |
3887 | } |
3888 | return len; |
3889 | } |
3890 | |
3891 | #if FF_API_SET_PTS_INFO |
3892 | void av_set_pts_info(AVStream *s, int pts_wrap_bits, |
3893 | unsigned int pts_num, unsigned int pts_den) |
3894 | { |
3895 | avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den); |
3896 | } |
3897 | #endif |
3898 | |
3899 | void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, |
3900 | unsigned int pts_num, unsigned int pts_den) |
3901 | { |
3902 | AVRational new_tb; |
3903 | if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){ |
3904 | if(new_tb.num != pts_num) |
3905 | av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num); |
3906 | }else |
3907 | av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index); |
3908 | |
3909 | if(new_tb.num <= 0 || new_tb.den <= 0) { |
3910 | av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase %d/%d for st:%d\n", new_tb.num, new_tb.den, s->index); |
3911 | return; |
3912 | } |
3913 | s->time_base = new_tb; |
3914 | av_codec_set_pkt_timebase(s->codec, new_tb); |
3915 | s->pts_wrap_bits = pts_wrap_bits; |
3916 | } |
3917 | |
3918 | void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf, |
3919 | void *context) |
3920 | { |
3921 | const char *ptr = str; |
3922 | |
3923 | /* Parse key=value pairs. */ |
3924 | for (;;) { |
3925 | const char *key; |
3926 | char *dest = NULL, *dest_end; |
3927 | int key_len, dest_len = 0; |
3928 | |
3929 | /* Skip whitespace and potential commas. */ |
3930 | while (*ptr && (av_isspace(*ptr) || *ptr == ',')) |
3931 | ptr++; |
3932 | if (!*ptr) |
3933 | break; |
3934 | |
3935 | key = ptr; |
3936 | |
3937 | if (!(ptr = strchr(key, '='))) |
3938 | break; |
3939 | ptr++; |
3940 | key_len = ptr - key; |
3941 | |
3942 | callback_get_buf(context, key, key_len, &dest, &dest_len); |
3943 | dest_end = dest + dest_len - 1; |
3944 | |
3945 | if (*ptr == '\"') { |
3946 | ptr++; |
3947 | while (*ptr && *ptr != '\"') { |
3948 | if (*ptr == '\\') { |
3949 | if (!ptr[1]) |
3950 | break; |
3951 | if (dest && dest < dest_end) |
3952 | *dest++ = ptr[1]; |
3953 | ptr += 2; |
3954 | } else { |
3955 | if (dest && dest < dest_end) |
3956 | *dest++ = *ptr; |
3957 | ptr++; |
3958 | } |
3959 | } |
3960 | if (*ptr == '\"') |
3961 | ptr++; |
3962 | } else { |
3963 | for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++) |
3964 | if (dest && dest < dest_end) |
3965 | *dest++ = *ptr; |
3966 | } |
3967 | if (dest) |
3968 | *dest = 0; |
3969 | } |
3970 | } |
3971 | |
3972 | int ff_find_stream_index(AVFormatContext *s, int id) |
3973 | { |
3974 | int i; |
3975 | for (i = 0; i < s->nb_streams; i++) { |
3976 | if (s->streams[i]->id == id) |
3977 | return i; |
3978 | } |
3979 | return -1; |
3980 | } |
3981 | |
3982 | int64_t ff_iso8601_to_unix_time(const char *datestr) |
3983 | { |
3984 | struct tm time1 = {0}, time2 = {0}; |
3985 | char *ret1, *ret2; |
3986 | ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1); |
3987 | ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2); |
3988 | if (ret2 && !ret1) |
3989 | return av_timegm(&time2); |
3990 | else |
3991 | return av_timegm(&time1); |
3992 | } |
3993 | |
3994 | int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance) |
3995 | { |
3996 | if (ofmt) { |
3997 | if (ofmt->query_codec) |
3998 | return ofmt->query_codec(codec_id, std_compliance); |
3999 | else if (ofmt->codec_tag) |
4000 | return !!av_codec_get_tag(ofmt->codec_tag, codec_id); |
4001 | else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec || |
4002 | codec_id == ofmt->subtitle_codec) |
4003 | return 1; |
4004 | } |
4005 | return AVERROR_PATCHWELCOME; |
4006 | } |
4007 | |
4008 | int avformat_network_init(void) |
4009 | { |
4010 | #if CONFIG_NETWORK |
4011 | int ret; |
4012 | ff_network_inited_globally = 1; |
4013 | if ((ret = ff_network_init()) < 0) |
4014 | return ret; |
4015 | ff_tls_init(); |
4016 | #endif |
4017 | return 0; |
4018 | } |
4019 | |
4020 | int avformat_network_deinit(void) |
4021 | { |
4022 | #if CONFIG_NETWORK |
4023 | ff_network_close(); |
4024 | ff_tls_deinit(); |
4025 | #endif |
4026 | return 0; |
4027 | } |
4028 | |
4029 | int ff_add_param_change(AVPacket *pkt, int32_t channels, |
4030 | uint64_t channel_layout, int32_t sample_rate, |
4031 | int32_t width, int32_t height) |
4032 | { |
4033 | uint32_t flags = 0; |
4034 | int size = 4; |
4035 | uint8_t *data; |
4036 | if (!pkt) |
4037 | return AVERROR(EINVAL); |
4038 | if (channels) { |
4039 | size += 4; |
4040 | flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT; |
4041 | } |
4042 | if (channel_layout) { |
4043 | size += 8; |
4044 | flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT; |
4045 | } |
4046 | if (sample_rate) { |
4047 | size += 4; |
4048 | flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE; |
4049 | } |
4050 | if (width || height) { |
4051 | size += 8; |
4052 | flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS; |
4053 | } |
4054 | data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size); |
4055 | if (!data) |
4056 | return AVERROR(ENOMEM); |
4057 | bytestream_put_le32(&data, flags); |
4058 | if (channels) |
4059 | bytestream_put_le32(&data, channels); |
4060 | if (channel_layout) |
4061 | bytestream_put_le64(&data, channel_layout); |
4062 | if (sample_rate) |
4063 | bytestream_put_le32(&data, sample_rate); |
4064 | if (width || height) { |
4065 | bytestream_put_le32(&data, width); |
4066 | bytestream_put_le32(&data, height); |
4067 | } |
4068 | return 0; |
4069 | } |
4070 | |
4071 | AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame) |
4072 | { |
4073 | AVRational undef = {0, 1}; |
4074 | AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef; |
4075 | AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef; |
4076 | AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio; |
4077 | |
4078 | av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den, |
4079 | stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX); |
4080 | if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0) |
4081 | stream_sample_aspect_ratio = undef; |
4082 | |
4083 | av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den, |
4084 | frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX); |
4085 | if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0) |
4086 | frame_sample_aspect_ratio = undef; |
4087 | |
4088 | if (stream_sample_aspect_ratio.num) |
4089 | return stream_sample_aspect_ratio; |
4090 | else |
4091 | return frame_sample_aspect_ratio; |
4092 | } |
4093 | |
4094 | AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame) |
4095 | { |
4096 | AVRational fr = st->r_frame_rate; |
4097 | |
4098 | if (st->codec->ticks_per_frame > 1) { |
4099 | AVRational codec_fr = av_inv_q(st->codec->time_base); |
4100 | AVRational avg_fr = st->avg_frame_rate; |
4101 | codec_fr.den *= st->codec->ticks_per_frame; |
4102 | if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7 |
4103 | && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1) |
4104 | fr = codec_fr; |
4105 | } |
4106 | |
4107 | return fr; |
4108 | } |
4109 | |
4110 | int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st, |
4111 | const char *spec) |
4112 | { |
4113 | if (*spec <= '9' && *spec >= '0') /* opt:index */ |
4114 | return strtol(spec, NULL, 0) == st->index; |
4115 | else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' || |
4116 | *spec == 't') { /* opt:[vasdt] */ |
4117 | enum AVMediaType type; |
4118 | |
4119 | switch (*spec++) { |
4120 | case 'v': type = AVMEDIA_TYPE_VIDEO; break; |
4121 | case 'a': type = AVMEDIA_TYPE_AUDIO; break; |
4122 | case 's': type = AVMEDIA_TYPE_SUBTITLE; break; |
4123 | case 'd': type = AVMEDIA_TYPE_DATA; break; |
4124 | case 't': type = AVMEDIA_TYPE_ATTACHMENT; break; |
4125 | default: av_assert0(0); |
4126 | } |
4127 | if (type != st->codec->codec_type) |
4128 | return 0; |
4129 | if (*spec++ == ':') { /* possibly followed by :index */ |
4130 | int i, index = strtol(spec, NULL, 0); |
4131 | for (i = 0; i < s->nb_streams; i++) |
4132 | if (s->streams[i]->codec->codec_type == type && index-- == 0) |
4133 | return i == st->index; |
4134 | return 0; |
4135 | } |
4136 | return 1; |
4137 | } else if (*spec == 'p' && *(spec + 1) == ':') { |
4138 | int prog_id, i, j; |
4139 | char *endptr; |
4140 | spec += 2; |
4141 | prog_id = strtol(spec, &endptr, 0); |
4142 | for (i = 0; i < s->nb_programs; i++) { |
4143 | if (s->programs[i]->id != prog_id) |
4144 | continue; |
4145 | |
4146 | if (*endptr++ == ':') { |
4147 | int stream_idx = strtol(endptr, NULL, 0); |
4148 | return stream_idx >= 0 && |
4149 | stream_idx < s->programs[i]->nb_stream_indexes && |
4150 | st->index == s->programs[i]->stream_index[stream_idx]; |
4151 | } |
4152 | |
4153 | for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) |
4154 | if (st->index == s->programs[i]->stream_index[j]) |
4155 | return 1; |
4156 | } |
4157 | return 0; |
4158 | } else if (*spec == '#') { |
4159 | int sid; |
4160 | char *endptr; |
4161 | sid = strtol(spec + 1, &endptr, 0); |
4162 | if (!*endptr) |
4163 | return st->id == sid; |
4164 | } else if (!*spec) /* empty specifier, matches everything */ |
4165 | return 1; |
4166 | |
4167 | av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec); |
4168 | return AVERROR(EINVAL); |
4169 | } |
4170 | |
4171 | void ff_generate_avci_extradata(AVStream *st) |
4172 | { |
4173 | static const uint8_t avci100_1080p_extradata[] = { |
4174 | // SPS |
4175 | 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29, |
4176 | 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63, |
4177 | 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19, |
4178 | 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e, |
4179 | 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8, |
4180 | 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2, |
4181 | 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00, |
4182 | 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca, |
4183 | 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
4184 | // PPS |
4185 | 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48, |
4186 | 0xd0 |
4187 | }; |
4188 | static const uint8_t avci100_1080i_extradata[] = { |
4189 | // SPS |
4190 | 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29, |
4191 | 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63, |
4192 | 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19, |
4193 | 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65, |
4194 | 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26, |
4195 | 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50, |
4196 | 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e, |
4197 | 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28, |
4198 | 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0, |
4199 | 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03, |
4200 | 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00, |
4201 | // PPS |
4202 | 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48, |
4203 | 0xd0 |
4204 | }; |
4205 | static const uint8_t avci50_1080i_extradata[] = { |
4206 | // SPS |
4207 | 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28, |
4208 | 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18, |
4209 | 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c, |
4210 | 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61, |
4211 | 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06, |
4212 | 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63, |
4213 | 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19, |
4214 | 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16, |
4215 | 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01, |
4216 | 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03, |
4217 | 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00, |
4218 | // PPS |
4219 | 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12, |
4220 | 0x11 |
4221 | }; |
4222 | static const uint8_t avci100_720p_extradata[] = { |
4223 | // SPS |
4224 | 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29, |
4225 | 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62, |
4226 | 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5, |
4227 | 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8, |
4228 | 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95, |
4229 | 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43, |
4230 | 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01, |
4231 | 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05, |
4232 | 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03, |
4233 | 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00, |
4234 | // PPS |
4235 | 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12, |
4236 | 0x11 |
4237 | }; |
4238 | int size = 0; |
4239 | const uint8_t *data = 0; |
4240 | if (st->codec->width == 1920) { |
4241 | if (st->codec->field_order == AV_FIELD_PROGRESSIVE) { |
4242 | data = avci100_1080p_extradata; |
4243 | size = sizeof(avci100_1080p_extradata); |
4244 | } else { |
4245 | data = avci100_1080i_extradata; |
4246 | size = sizeof(avci100_1080i_extradata); |
4247 | } |
4248 | } else if (st->codec->width == 1440) { |
4249 | data = avci50_1080i_extradata; |
4250 | size = sizeof(avci50_1080i_extradata); |
4251 | } else if (st->codec->width == 1280) { |
4252 | data = avci100_720p_extradata; |
4253 | size = sizeof(avci100_720p_extradata); |
4254 | } |
4255 | if (!size) |
4256 | return; |
4257 | av_freep(&st->codec->extradata); |
4258 | if (ff_alloc_extradata(st->codec, size)) |
4259 | return; |
4260 | memcpy(st->codec->extradata, data, size); |
4261 | } |
4262 |