FFmpeg  4.1.11
asfdec_o.c
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1 /*
2  * Microsoft Advanced Streaming Format demuxer
3  * Copyright (c) 2014 Alexandra Hájková
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 "libavutil/attributes.h"
23 #include "libavutil/avstring.h"
24 #include "libavutil/bswap.h"
25 #include "libavutil/common.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/opt.h"
31 
32 #include "avformat.h"
33 #include "avio_internal.h"
34 #include "avlanguage.h"
35 #include "id3v2.h"
36 #include "internal.h"
37 #include "riff.h"
38 #include "asf.h"
39 #include "asfcrypt.h"
40 
41 #define ASF_BOOL 0x2
42 #define ASF_WORD 0x5
43 #define ASF_GUID 0x6
44 #define ASF_DWORD 0x3
45 #define ASF_QWORD 0x4
46 #define ASF_UNICODE 0x0
47 #define ASF_FLAG_BROADCAST 0x1
48 #define ASF_BYTE_ARRAY 0x1
49 #define ASF_TYPE_AUDIO 0x2
50 #define ASF_TYPE_VIDEO 0x1
51 #define ASF_STREAM_NUM 0x7F
52 #define ASF_MAX_STREAMS 128
53 #define BMP_HEADER_SIZE 40
54 #define ASF_NUM_OF_PAYLOADS 0x3F
55 #define ASF_ERROR_CORRECTION_LENGTH_TYPE 0x60
56 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
57 
58 typedef struct GUIDParseTable {
59  const char *name;
64 
65 typedef struct ASFPacket {
67  int64_t dts;
68  uint32_t frame_num; // ASF payloads with the same number are parts of the same frame
69  int flags;
70  int data_size;
71  int duration;
72  int size_left;
74 } ASFPacket;
75 
76 typedef struct ASFStream {
77  uint8_t stream_index; // from packet header
78  int index; // stream index in AVFormatContext, set in asf_read_stream_properties
79  int type;
80  int indexed; // added index entries from the Simple Index Object or not
81  int8_t span; // for deinterleaving
82  uint16_t virtual_pkt_len;
84  int16_t lang_idx;
86 } ASFStream;
87 
88 typedef struct ASFStreamData{
89  char langs[32];
90  AVDictionary *asf_met; // for storing per-stream metadata
93 
94 typedef struct ASFContext {
96  int is_simple_index; // is simple index present or not 1/0
97  int is_header;
98 
99  uint64_t preroll;
100  uint64_t nb_packets; // ASF packets
101  uint32_t packet_size;
102  int64_t send_time;
103  int duration;
104 
105  uint32_t b_flags; // flags with broadcast flag
106  uint32_t prop_flags; // file properties object flags
107 
108  uint64_t data_size; // data object size
109  uint64_t unknown_size; // size of the unknown object
110 
111  int64_t offset; // offset of the current object
112 
113  int64_t data_offset;
114  int64_t first_packet_offset; // packet offset
115  int64_t unknown_offset; // for top level header objects or subobjects without specified behavior
117 
118  // ASF file must not contain more than 128 streams according to the specification
119  ASFStream *asf_st[ASF_MAX_STREAMS];
122 
123  int stream_index; // from packet header, for the subpayload case
124 
125  // packet parameters
126  uint64_t sub_header_offset; // offset of subpayload header
127  int64_t sub_dts;
128  uint8_t dts_delta; // for subpayloads
129  uint32_t packet_size_internal; // packet size stored inside ASFPacket, can be 0
130  int64_t packet_offset; // offset of the current packet inside Data Object
131  uint32_t pad_len; // padding after payload
132  uint32_t rep_data_len;
133 
134  // packet state
135  uint64_t sub_left; // subpayloads left or not
136  unsigned int nb_sub; // number of subpayloads read so far from the current ASF packet
137  uint16_t mult_sub_len; // total length of subpayloads array inside multiple payload
138  uint64_t nb_mult_left; // multiple payloads left
140  enum {
144  READ_MULTI_SUB
145  } state;
146 } ASFContext;
147 
148 static int detect_unknown_subobject(AVFormatContext *s, int64_t offset, int64_t size);
150 
151 static int asf_probe(AVProbeData *pd)
152 {
153  /* check file header */
154  if (!ff_guidcmp(pd->buf, &ff_asf_header))
155  return AVPROBE_SCORE_MAX/2;
156  else
157  return 0;
158 }
159 
161 {
162  FFSWAP(unsigned char, guid[0], guid[3]);
163  FFSWAP(unsigned char, guid[1], guid[2]);
164  FFSWAP(unsigned char, guid[4], guid[5]);
165  FFSWAP(unsigned char, guid[6], guid[7]);
166 }
167 
168 static void align_position(AVIOContext *pb, int64_t offset, uint64_t size)
169 {
170  if (size < INT64_MAX - offset && avio_tell(pb) != offset + size)
171  avio_seek(pb, offset + size, SEEK_SET);
172 }
173 
175 {
176  ASFContext *asf = s->priv_data;
177  AVIOContext *pb = s->pb;
178  uint64_t size = avio_rl64(pb);
179  int ret;
180 
181  if (size > INT64_MAX || asf->in_asf_read_unknown > 5)
182  return AVERROR_INVALIDDATA;
183 
184  if (asf->is_header)
185  asf->unknown_size = size;
186  asf->is_header = 0;
187  if (!g->is_subobject) {
188  if (!(ret = strcmp(g->name, "Header Extension")))
189  avio_skip(pb, 22); // skip reserved fields and Data Size
190  asf->in_asf_read_unknown ++;
192  asf->unknown_size);
193  asf->in_asf_read_unknown --;
194  if (ret < 0)
195  return ret;
196  } else {
197  if (size < 24) {
198  av_log(s, AV_LOG_ERROR, "Too small size %"PRIu64" (< 24).\n", size);
199  return AVERROR_INVALIDDATA;
200  }
201  avio_skip(pb, size - 24);
202  }
203 
204  return 0;
205 }
206 
207 static int get_asf_string(AVIOContext *pb, int maxlen, char *buf, int buflen)
208 {
209  char *q = buf;
210  int ret = 0;
211  if (buflen <= 0)
212  return AVERROR(EINVAL);
213  while (ret + 1 < maxlen) {
214  uint8_t tmp;
215  uint32_t ch;
216  GET_UTF16(ch, (ret += 2) <= maxlen ? avio_rl16(pb) : 0, break;);
217  PUT_UTF8(ch, tmp, if (q - buf < buflen - 1) *q++ = tmp;)
218  }
219  *q = 0;
220 
221  return ret;
222 }
223 
225 {
226  ASFContext *asf = s->priv_data;
227  AVIOContext *pb = s->pb;
228  uint64_t size = avio_rl64(pb);
229  int i, nb_markers, ret;
230  size_t len;
231  char name[1024];
232 
233  avio_skip(pb, 8);
234  avio_skip(pb, 8); // skip reserved GUID
235  nb_markers = avio_rl32(pb);
236  avio_skip(pb, 2); // skip reserved field
237  len = avio_rl16(pb);
238  for (i = 0; i < len; i++)
239  avio_skip(pb, 1);
240 
241  for (i = 0; i < nb_markers; i++) {
242  int64_t pts;
243 
244  avio_skip(pb, 8);
245  pts = avio_rl64(pb);
246  pts -= asf->preroll * 10000;
247  avio_skip(pb, 2); // entry length
248  avio_skip(pb, 4); // send time
249  avio_skip(pb, 4); // flags
250  len = avio_rl32(pb);
251 
252  if (avio_feof(pb))
253  return AVERROR_INVALIDDATA;
254 
255  if ((ret = avio_get_str16le(pb, len, name,
256  sizeof(name))) < len)
257  avio_skip(pb, len - ret);
258  avpriv_new_chapter(s, i, (AVRational) { 1, 10000000 }, pts,
260  }
261  align_position(pb, asf->offset, size);
262 
263  return 0;
264 }
265 
266 static int asf_read_metadata(AVFormatContext *s, const char *title, uint16_t len,
267  unsigned char *ch, uint16_t buflen)
268 {
269  AVIOContext *pb = s->pb;
270 
271  avio_get_str16le(pb, len, ch, buflen);
272  if (ch[0]) {
273  if (av_dict_set(&s->metadata, title, ch, 0) < 0)
274  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
275  }
276 
277  return 0;
278 }
279 
281  uint16_t val_len, int type, AVDictionary **met)
282 {
283  int ret;
284  uint8_t *value;
285  uint16_t buflen = 2 * val_len + 1;
286  AVIOContext *pb = s->pb;
287 
288  value = av_malloc(buflen);
289  if (!value)
290  return AVERROR(ENOMEM);
291  if (type == ASF_UNICODE) {
292  // get_asf_string reads UTF-16 and converts it to UTF-8 which needs longer buffer
293  if ((ret = get_asf_string(pb, val_len, value, buflen)) < 0)
294  goto failed;
295  if (av_dict_set(met, name, value, 0) < 0)
296  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
297  } else {
298  char buf[256];
299  if (val_len > sizeof(buf)) {
300  ret = AVERROR_INVALIDDATA;
301  goto failed;
302  }
303  if ((ret = avio_read(pb, value, val_len)) < 0)
304  goto failed;
305  if (ret < 2 * val_len)
306  value[ret] = '\0';
307  else
308  value[2 * val_len - 1] = '\0';
309  snprintf(buf, sizeof(buf), "%s", value);
310  if (av_dict_set(met, name, buf, 0) < 0)
311  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
312  }
313  av_freep(&value);
314 
315  return 0;
316 
317 failed:
318  av_freep(&value);
319  return ret;
320 }
321 static int asf_read_generic_value(AVIOContext *pb, int type, uint64_t *value)
322 {
323 
324  switch (type) {
325  case ASF_BOOL:
326  *value = avio_rl16(pb);
327  break;
328  case ASF_DWORD:
329  *value = avio_rl32(pb);
330  break;
331  case ASF_QWORD:
332  *value = avio_rl64(pb);
333  break;
334  case ASF_WORD:
335  *value = avio_rl16(pb);
336  break;
337  default:
338  return AVERROR_INVALIDDATA;
339  }
340 
341  return 0;
342 }
343 
345  int type, AVDictionary **met)
346 {
347  AVIOContext *pb = s->pb;
348  uint64_t value;
349  char buf[32];
350  int ret;
351 
352  ret = asf_read_generic_value(pb, type, &value);
353  if (ret < 0)
354  return ret;
355 
356  snprintf(buf, sizeof(buf), "%"PRIu64, value);
357  if (av_dict_set(met, name, buf, 0) < 0)
358  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
359 
360  return 0;
361 }
362 
363 /* MSDN claims that this should be "compatible with the ID3 frame, APIC",
364  * but in reality this is only loosely similar */
366 {
367  ASFContext *asf = s->priv_data;
368  AVPacket pkt = { 0 };
369  const CodecMime *mime = ff_id3v2_mime_tags;
370  enum AVCodecID id = AV_CODEC_ID_NONE;
371  char mimetype[64];
372  uint8_t *desc = NULL;
373  AVStream *st = NULL;
374  int ret, type, picsize, desc_len;
375  ASFStream *asf_st;
376 
377  /* type + picsize + mime + desc */
378  if (len < 1 + 4 + 2 + 2) {
379  av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
380  return AVERROR_INVALIDDATA;
381  }
382 
383  /* picture type */
384  type = avio_r8(s->pb);
385  len--;
386  if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
387  av_log(s, AV_LOG_WARNING, "Unknown attached picture type: %d.\n", type);
388  type = 0;
389  }
390 
391  /* picture data size */
392  picsize = avio_rl32(s->pb);
393  len -= 4;
394 
395  /* picture MIME type */
396  len -= avio_get_str16le(s->pb, len, mimetype, sizeof(mimetype));
397  while (mime->id != AV_CODEC_ID_NONE) {
398  if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
399  id = mime->id;
400  break;
401  }
402  mime++;
403  }
404  if (id == AV_CODEC_ID_NONE) {
405  av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
406  mimetype);
407  return 0;
408  }
409 
410  if (picsize >= len) {
411  av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d >= %d.\n",
412  picsize, len);
413  return AVERROR_INVALIDDATA;
414  }
415 
416  /* picture description */
417  desc_len = (len - picsize) * 2 + 1;
418  desc = av_malloc(desc_len);
419  if (!desc)
420  return AVERROR(ENOMEM);
421  len -= avio_get_str16le(s->pb, len - picsize, desc, desc_len);
422 
423  ret = av_get_packet(s->pb, &pkt, picsize);
424  if (ret < 0)
425  goto fail;
426 
427  st = avformat_new_stream(s, NULL);
428  if (!st) {
429  ret = AVERROR(ENOMEM);
430  goto fail;
431  }
432  asf->asf_st[asf->nb_streams] = av_mallocz(sizeof(*asf_st));
433  asf_st = asf->asf_st[asf->nb_streams];
434  if (!asf_st) {
435  ret = AVERROR(ENOMEM);
436  goto fail;
437  }
438 
440  st->codecpar->codec_type = asf_st->type = AVMEDIA_TYPE_VIDEO;
441  st->codecpar->codec_id = id;
442  st->attached_pic = pkt;
443  st->attached_pic.stream_index = asf_st->index = st->index;
445 
446  asf->nb_streams++;
447 
448  if (*desc) {
449  if (av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL) < 0)
450  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
451  } else
452  av_freep(&desc);
453 
454  if (av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0) < 0)
455  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
456 
457  return 0;
458 
459 fail:
460  av_freep(&desc);
461  av_packet_unref(&pkt);
462  return ret;
463 }
464 
465 static void get_id3_tag(AVFormatContext *s, int len)
466 {
467  ID3v2ExtraMeta *id3v2_extra_meta = NULL;
468 
469  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, len);
470  if (id3v2_extra_meta) {
471  ff_id3v2_parse_apic(s, &id3v2_extra_meta);
472  ff_id3v2_parse_chapters(s, &id3v2_extra_meta);
473  }
474  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
475 }
476 
477 static int process_metadata(AVFormatContext *s, const uint8_t *name, uint16_t name_len,
478  uint16_t val_len, uint16_t type, AVDictionary **met)
479 {
480  int ret;
482 
483  if (val_len) {
484  switch (type) {
485  case ASF_UNICODE:
486  asf_read_value(s, name, val_len, type, met);
487  break;
488  case ASF_BYTE_ARRAY:
489  if (!strcmp(name, "WM/Picture")) // handle cover art
490  asf_read_picture(s, val_len);
491  else if (!strcmp(name, "ID3")) // handle ID3 tag
492  get_id3_tag(s, val_len);
493  else
494  asf_read_value(s, name, val_len, type, met);
495  break;
496  case ASF_GUID:
497  ff_get_guid(s->pb, &guid);
498  break;
499  default:
500  if ((ret = asf_set_metadata(s, name, type, met)) < 0)
501  return ret;
502  break;
503  }
504  }
505 
506  return 0;
507 }
508 
510 {
511  ASFContext *asf = s->priv_data;
512  AVIOContext *pb = s->pb;
513  uint64_t size = avio_rl64(pb);
514  uint16_t nb_desc = avio_rl16(pb);
515  int i, ret;
516 
517  for (i = 0; i < nb_desc; i++) {
518  uint16_t name_len, type, val_len;
519  uint8_t *name = NULL;
520 
521  name_len = avio_rl16(pb);
522  if (!name_len)
523  return AVERROR_INVALIDDATA;
524  name = av_malloc(name_len);
525  if (!name)
526  return AVERROR(ENOMEM);
527  avio_get_str16le(pb, name_len, name,
528  name_len);
529  type = avio_rl16(pb);
530  // BOOL values are 16 bits long in the Metadata Object
531  // but 32 bits long in the Extended Content Description Object
532  if (type == ASF_BOOL)
533  type = ASF_DWORD;
534  val_len = avio_rl16(pb);
535 
536  ret = process_metadata(s, name, name_len, val_len, type, &s->metadata);
537  av_freep(&name);
538  if (ret < 0)
539  return ret;
540  }
541 
542  align_position(pb, asf->offset, size);
543  return 0;
544 }
545 
546 static AVStream *find_stream(AVFormatContext *s, uint16_t st_num)
547 {
548  AVStream *st = NULL;
549  ASFContext *asf = s->priv_data;
550  int i;
551 
552  for (i = 0; i < asf->nb_streams; i++) {
553  if (asf->asf_st[i]->stream_index == st_num) {
554  st = s->streams[asf->asf_st[i]->index];
555  break;
556  }
557  }
558 
559  return st;
560 }
561 
563 {
564  ASFContext *asf = s->priv_data;
565  AVIOContext *pb = s->pb;
566  uint64_t value = 0;
567  int ret;
568 
569  ret = asf_read_generic_value(pb, type, &value);
570  if (ret < 0)
571  return ret;
572 
573  if (st_num < ASF_MAX_STREAMS) {
574  if (!strcmp(name, "AspectRatioX"))
575  asf->asf_sd[st_num].aspect_ratio.num = value;
576  else
577  asf->asf_sd[st_num].aspect_ratio.den = value;
578  }
579  return 0;
580 }
581 
583 {
584  ASFContext *asf = s->priv_data;
585  AVIOContext *pb = s->pb;
586  uint64_t size = avio_rl64(pb);
587  uint16_t nb_recs = avio_rl16(pb); // number of records in the Description Records list
588  int i, ret;
589 
590  for (i = 0; i < nb_recs; i++) {
591  uint16_t name_len, buflen, type, val_len, st_num;
592  uint8_t *name = NULL;
593 
594  avio_skip(pb, 2); // skip reserved field
595  st_num = avio_rl16(pb);
596  name_len = avio_rl16(pb);
597  buflen = 2 * name_len + 1;
598  if (!name_len)
599  break;
600  type = avio_rl16(pb);
601  val_len = avio_rl32(pb);
602  name = av_malloc(buflen);
603  if (!name)
604  return AVERROR(ENOMEM);
605  avio_get_str16le(pb, name_len, name,
606  buflen);
607  if (!strcmp(name, "AspectRatioX") || !strcmp(name, "AspectRatioY")) {
608  ret = asf_store_aspect_ratio(s, st_num, name, type);
609  if (ret < 0) {
610  av_freep(&name);
611  break;
612  }
613  } else {
614  if (st_num < ASF_MAX_STREAMS) {
615  if ((ret = process_metadata(s, name, name_len, val_len, type,
616  &asf->asf_sd[st_num].asf_met)) < 0) {
617  av_freep(&name);
618  break;
619  }
620  }
621  }
622  av_freep(&name);
623  }
624 
625  align_position(pb, asf->offset, size);
626  return 0;
627 }
628 
630 {
631  ASFContext *asf = s->priv_data;
632  AVIOContext *pb = s->pb;
633  int i;
634  static const char *const titles[] =
635  { "Title", "Author", "Copyright", "Description", "Rate" };
636  uint16_t len[5], buflen[5] = { 0 };
637  uint8_t *ch;
638  uint64_t size = avio_rl64(pb);
639 
640  for (i = 0; i < 5; i++) {
641  len[i] = avio_rl16(pb);
642  // utf8 string should be <= 2 * utf16 string, extra byte for the terminator
643  buflen[i] = 2 * len[i] + 1;
644  }
645 
646  for (i = 0; i < 5; i++) {
647  ch = av_malloc(buflen[i]);
648  if (!ch)
649  return(AVERROR(ENOMEM));
650  asf_read_metadata(s, titles[i], len[i], ch, buflen[i]);
651  av_freep(&ch);
652  }
653  align_position(pb, asf->offset, size);
654 
655  return 0;
656 }
657 
659 {
660  ASFContext *asf = s->priv_data;
661  AVIOContext *pb = s->pb;
662  time_t creation_time;
663 
664  avio_rl64(pb); // read object size
665  avio_skip(pb, 16); // skip File ID
666  avio_skip(pb, 8); // skip File size
667  creation_time = avio_rl64(pb);
668  if (!(asf->b_flags & ASF_FLAG_BROADCAST)) {
669  struct tm tmbuf;
670  struct tm *tm;
671  char buf[64];
672 
673  // creation date is in 100 ns units from 1 Jan 1601, conversion to s
674  creation_time /= 10000000;
675  // there are 11644473600 seconds between 1 Jan 1601 and 1 Jan 1970
676  creation_time -= 11644473600;
677  tm = gmtime_r(&creation_time, &tmbuf);
678  if (tm) {
679  if (!strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm))
680  buf[0] = '\0';
681  } else
682  buf[0] = '\0';
683  if (buf[0]) {
684  if (av_dict_set(&s->metadata, "creation_time", buf, 0) < 0)
685  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
686  }
687  }
688  asf->nb_packets = avio_rl64(pb);
689  asf->duration = avio_rl64(pb) / 10000; // stream duration
690  avio_skip(pb, 8); // skip send duration
691  asf->preroll = avio_rl64(pb);
692  asf->duration -= asf->preroll;
693  asf->b_flags = avio_rl32(pb);
694  avio_skip(pb, 4); // skip minimal packet size
695  asf->packet_size = avio_rl32(pb);
696  avio_skip(pb, 4); // skip max_bitrate
697 
698  return 0;
699 }
700 
702 {
703  uint16_t size_asf; // ASF-specific Format Data size
704  uint32_t size_bmp; // BMP_HEADER-specific Format Data size
705  unsigned int tag;
706 
707  st->codecpar->width = avio_rl32(pb);
708  st->codecpar->height = avio_rl32(pb);
709  avio_skip(pb, 1); // skip reserved flags
710  size_asf = avio_rl16(pb);
711  tag = ff_get_bmp_header(pb, st, &size_bmp);
712  st->codecpar->codec_tag = tag;
714  size_bmp = FFMAX(size_asf, size_bmp);
715 
716  if (size_bmp > BMP_HEADER_SIZE) {
717  int ret = ff_get_extradata(avfmt, st->codecpar, pb, size_bmp - BMP_HEADER_SIZE);
718 
719  if (ret < 0)
720  return ret;
721  }
722  return 0;
723 }
724 
726 {
727  ASFContext *asf = s->priv_data;
728  AVIOContext *pb = s->pb;
729  uint64_t size;
730  uint32_t err_data_len, ts_data_len; // type specific data length
731  uint16_t flags;
732  ff_asf_guid stream_type;
733  enum AVMediaType type;
734  int i, ret;
735  uint8_t stream_index;
736  AVStream *st;
737  ASFStream *asf_st;
738 
739  // ASF file must not contain more than 128 streams according to the specification
740  if (asf->nb_streams >= ASF_MAX_STREAMS)
741  return AVERROR_INVALIDDATA;
742 
743  size = avio_rl64(pb);
744  ff_get_guid(pb, &stream_type);
745  if (!ff_guidcmp(&stream_type, &ff_asf_audio_stream))
746  type = AVMEDIA_TYPE_AUDIO;
747  else if (!ff_guidcmp(&stream_type, &ff_asf_video_stream))
748  type = AVMEDIA_TYPE_VIDEO;
749  else if (!ff_guidcmp(&stream_type, &ff_asf_jfif_media))
750  type = AVMEDIA_TYPE_VIDEO;
751  else if (!ff_guidcmp(&stream_type, &ff_asf_command_stream))
752  type = AVMEDIA_TYPE_DATA;
753  else if (!ff_guidcmp(&stream_type,
755  type = AVMEDIA_TYPE_UNKNOWN;
756  else
757  return AVERROR_INVALIDDATA;
758 
759  ff_get_guid(pb, &stream_type); // error correction type
760  avio_skip(pb, 8); // skip the time offset
761  ts_data_len = avio_rl32(pb);
762  err_data_len = avio_rl32(pb);
763  flags = avio_rl16(pb); // bit 15 - Encrypted Content
764 
765  stream_index = flags & ASF_STREAM_NUM;
766  for (i = 0; i < asf->nb_streams; i++)
767  if (stream_index == asf->asf_st[i]->stream_index) {
769  "Duplicate stream found, this stream will be ignored.\n");
770  align_position(pb, asf->offset, size);
771  return 0;
772  }
773 
774  st = avformat_new_stream(s, NULL);
775  if (!st)
776  return AVERROR(ENOMEM);
777  avpriv_set_pts_info(st, 32, 1, 1000); // pts should be dword, in milliseconds
778  st->codecpar->codec_type = type;
779  asf->asf_st[asf->nb_streams] = av_mallocz(sizeof(*asf_st));
780  if (!asf->asf_st[asf->nb_streams])
781  return AVERROR(ENOMEM);
782  asf_st = asf->asf_st[asf->nb_streams];
783  asf->nb_streams++;
784  asf_st->stream_index = stream_index;
785  asf_st->index = st->index;
786  asf_st->indexed = 0;
787  st->id = flags & ASF_STREAM_NUM;
788  av_init_packet(&asf_st->pkt.avpkt);
789  asf_st->pkt.data_size = 0;
790  avio_skip(pb, 4); // skip reserved field
791 
792  switch (type) {
793  case AVMEDIA_TYPE_AUDIO:
794  asf_st->type = AVMEDIA_TYPE_AUDIO;
795  if ((ret = ff_get_wav_header(s, pb, st->codecpar, ts_data_len, 0)) < 0)
796  return ret;
797  break;
798  case AVMEDIA_TYPE_VIDEO:
799  asf_st->type = AVMEDIA_TYPE_VIDEO;
800  if ((ret = parse_video_info(s, pb, st)) < 0)
801  return ret;
802  break;
803  default:
804  avio_skip(pb, ts_data_len);
805  break;
806  }
807 
808  if (err_data_len) {
809  if (type == AVMEDIA_TYPE_AUDIO) {
810  uint8_t span = avio_r8(pb);
811  if (span > 1) {
812  asf_st->span = span;
813  asf_st->virtual_pkt_len = avio_rl16(pb);
814  asf_st->virtual_chunk_len = avio_rl16(pb);
815  if (!asf_st->virtual_chunk_len || !asf_st->virtual_pkt_len)
816  return AVERROR_INVALIDDATA;
817  avio_skip(pb, err_data_len - 5);
818  } else
819  avio_skip(pb, err_data_len - 1);
820  } else
821  avio_skip(pb, err_data_len);
822  }
823 
824  align_position(pb, asf->offset, size);
825 
826  return 0;
827 }
828 
829 static void set_language(AVFormatContext *s, const char *rfc1766, AVDictionary **met)
830 {
831  // language abbr should contain at least 2 chars
832  if (rfc1766 && strlen(rfc1766) > 1) {
833  const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
834  const char *iso6392 = ff_convert_lang_to(primary_tag,
836  if (iso6392)
837  if (av_dict_set(met, "language", iso6392, 0) < 0)
838  av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
839  }
840 }
841 
843 {
844  ASFContext *asf = s->priv_data;
845  AVIOContext *pb = s->pb;
846  AVStream *st = NULL;
848  uint16_t nb_st_name, nb_pay_exts, st_num, lang_idx;
849  int i, ret;
850  uint32_t bitrate;
851  uint64_t start_time, end_time, time_per_frame;
852  uint64_t size = avio_rl64(pb);
853 
854  start_time = avio_rl64(pb);
855  end_time = avio_rl64(pb);
856  bitrate = avio_rl32(pb);
857  avio_skip(pb, 28); // skip some unused values
858  st_num = avio_rl16(pb);
859  st_num &= ASF_STREAM_NUM;
860  lang_idx = avio_rl16(pb); // Stream Language ID Index
861  for (i = 0; i < asf->nb_streams; i++) {
862  if (st_num == asf->asf_st[i]->stream_index) {
863  st = s->streams[asf->asf_st[i]->index];
864  asf->asf_st[i]->lang_idx = lang_idx;
865  break;
866  }
867  }
868  time_per_frame = avio_rl64(pb); // average time per frame
869  if (st) {
870  st->start_time = start_time;
871  st->duration = end_time - start_time;
872  st->codecpar->bit_rate = bitrate;
873  st->avg_frame_rate.num = 10000000;
874  st->avg_frame_rate.den = time_per_frame;
875  }
876  nb_st_name = avio_rl16(pb);
877  nb_pay_exts = avio_rl16(pb);
878  for (i = 0; i < nb_st_name; i++) {
879  uint16_t len;
880 
881  avio_rl16(pb); // Language ID Index
882  len = avio_rl16(pb);
883  avio_skip(pb, len);
884  }
885 
886  for (i = 0; i < nb_pay_exts; i++) {
887  uint32_t len;
888  avio_skip(pb, 16); // Extension System ID
889  avio_skip(pb, 2); // Extension Data Size
890  len = avio_rl32(pb);
891  avio_skip(pb, len);
892  }
893 
894  if ((ret = ff_get_guid(pb, &guid)) < 0) {
895  align_position(pb, asf->offset, size);
896 
897  return 0;
898  }
899 
900  g = find_guid(guid);
901  if (g && !(strcmp(g->name, "Stream Properties"))) {
902  if ((ret = g->read_object(s, g)) < 0)
903  return ret;
904  }
905 
906  align_position(pb, asf->offset, size);
907  return 0;
908 }
909 
911 {
912  ASFContext *asf = s->priv_data;
913  AVIOContext *pb = s->pb;
914  int i, ret;
915  uint64_t size = avio_rl64(pb);
916  uint16_t nb_langs = avio_rl16(pb);
917 
918  if (nb_langs < ASF_MAX_STREAMS) {
919  for (i = 0; i < nb_langs; i++) {
920  size_t len;
921  len = avio_r8(pb);
922  if (!len)
923  len = 6;
924  if ((ret = get_asf_string(pb, len, asf->asf_sd[i].langs,
925  sizeof(asf->asf_sd[i].langs))) < 0) {
926  return ret;
927  }
928  }
929  }
930 
931  align_position(pb, asf->offset, size);
932  return 0;
933 }
934 
935 // returns data object offset when reading this object for the first time
937 {
938  ASFContext *asf = s->priv_data;
939  AVIOContext *pb = s->pb;
940  uint64_t size = asf->data_size = avio_rl64(pb);
941  int i;
942 
943  if (!asf->data_reached) {
944  asf->data_reached = 1;
945  asf->data_offset = asf->offset;
946  }
947 
948  for (i = 0; i < asf->nb_streams; i++) {
949  if (!(asf->b_flags & ASF_FLAG_BROADCAST))
950  s->streams[i]->duration = asf->duration;
951  }
952  asf->nb_mult_left = 0;
953  asf->sub_left = 0;
954  asf->state = PARSE_PACKET_HEADER;
955  asf->return_subpayload = 0;
956  asf->packet_size_internal = 0;
957  avio_skip(pb, 16); // skip File ID
958  size = avio_rl64(pb); // Total Data Packets
959  if (size != asf->nb_packets)
961  "Number of Packets from File Properties Object is not equal to Total"
962  "Datapackets value! num of packets %"PRIu64" total num %"PRIu64".\n",
963  size, asf->nb_packets);
964  avio_skip(pb, 2); // skip reserved field
965  asf->first_packet_offset = avio_tell(pb);
966  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !(asf->b_flags & ASF_FLAG_BROADCAST))
967  align_position(pb, asf->offset, asf->data_size);
968 
969  return 0;
970 }
971 
973 {
974  ASFContext *asf = s->priv_data;
975  AVIOContext *pb = s->pb;
976  AVStream *st = NULL;
977  uint64_t interval; // index entry time interval in 100 ns units, usually it's 1s
978  uint32_t pkt_num, nb_entries;
979  int32_t prev_pkt_num = -1;
980  int i;
981  int64_t offset;
982  uint64_t size = avio_rl64(pb);
983 
984  // simple index objects should be ordered by stream number, this loop tries to find
985  // the first not indexed video stream
986  for (i = 0; i < asf->nb_streams; i++) {
987  if ((asf->asf_st[i]->type == AVMEDIA_TYPE_VIDEO) && !asf->asf_st[i]->indexed) {
988  asf->asf_st[i]->indexed = 1;
989  st = s->streams[asf->asf_st[i]->index];
990  break;
991  }
992  }
993  if (!st) {
994  avio_skip(pb, size - 24); // if there's no video stream, skip index object
995  return 0;
996  }
997  avio_skip(pb, 16); // skip File ID
998  interval = avio_rl64(pb);
999  avio_skip(pb, 4);
1000  nb_entries = avio_rl32(pb);
1001  for (i = 0; i < nb_entries; i++) {
1002  pkt_num = avio_rl32(pb);
1003  offset = avio_skip(pb, 2);
1004  if (offset < 0) {
1005  av_log(s, AV_LOG_ERROR, "Skipping failed in asf_read_simple_index.\n");
1006  return offset;
1007  }
1008  if (prev_pkt_num != pkt_num) {
1010  pkt_num, av_rescale(interval, i, 10000),
1011  asf->packet_size, 0, AVINDEX_KEYFRAME);
1012  prev_pkt_num = pkt_num;
1013  }
1014  }
1015  asf->is_simple_index = 1;
1016  align_position(pb, asf->offset, size);
1017 
1018  return 0;
1019 }
1020 
1021 static const GUIDParseTable gdef[] = {
1022  { "Data", { 0x75, 0xB2, 0x26, 0x36, 0x66, 0x8E, 0x11, 0xCF, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C }, asf_read_data, 1 },
1023  { "Simple Index", { 0x33, 0x00, 0x08, 0x90, 0xE5, 0xB1, 0x11, 0xCF, 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB }, asf_read_simple_index, 1 },
1024  { "Content Description", { 0x75, 0xB2, 0x26, 0x33, 0x66 ,0x8E, 0x11, 0xCF, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C }, asf_read_content_desc, 1 },
1025  { "Extended Content Description", { 0xD2, 0xD0, 0xA4, 0x40, 0xE3, 0x07, 0x11, 0xD2, 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5e, 0xA8, 0x50 }, asf_read_ext_content, 1 },
1026  { "Stream Bitrate Properties", { 0x7B, 0xF8, 0x75, 0xCE, 0x46, 0x8D, 0x11, 0xD1, 0x8D, 0x82, 0x00, 0x60, 0x97, 0xC9, 0xA2, 0xB2 }, asf_read_unknown, 1 },
1027  { "File Properties", { 0x8C, 0xAB, 0xDC, 0xA1, 0xA9, 0x47, 0x11, 0xCF, 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, asf_read_properties, 1 },
1028  { "Header Extension", { 0x5F, 0xBF, 0x03, 0xB5, 0xA9, 0x2E, 0x11, 0xCF, 0x8E, 0xE3, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, asf_read_unknown, 0 },
1029  { "Stream Properties", { 0xB7, 0xDC, 0x07, 0x91, 0xA9, 0xB7, 0x11, 0xCF, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, asf_read_stream_properties, 1 },
1030  { "Codec List", { 0x86, 0xD1, 0x52, 0x40, 0x31, 0x1D, 0x11, 0xD0, 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }, asf_read_unknown, 1 },
1031  { "Marker", { 0xF4, 0x87, 0xCD, 0x01, 0xA9, 0x51, 0x11, 0xCF, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, asf_read_marker, 1 },
1032  { "Script Command", { 0x1E, 0xFB, 0x1A, 0x30, 0x0B, 0x62, 0x11, 0xD0, 0xA3, 0x9B, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }, asf_read_unknown, 1 },
1033  { "Language List", { 0x7C, 0x43, 0x46, 0xa9, 0xef, 0xe0, 0x4B, 0xFC, 0xB2, 0x29, 0x39, 0x3e, 0xde, 0x41, 0x5c, 0x85 }, asf_read_language_list, 1},
1034  { "Padding", { 0x18, 0x06, 0xD4, 0x74, 0xCA, 0xDF, 0x45, 0x09, 0xA4, 0xBA, 0x9A, 0xAB, 0xCB, 0x96, 0xAA, 0xE8 }, asf_read_unknown, 1 },
1035  { "DRMv1 Header", { 0x22, 0x11, 0xB3, 0xFB, 0xBD, 0x23, 0x11, 0xD2, 0xB4, 0xB7, 0x00, 0xA0, 0xC9, 0x55, 0xFC, 0x6E }, asf_read_unknown, 1 },
1036  { "DRMv2 Header", { 0x29, 0x8A, 0xE6, 0x14, 0x26, 0x22, 0x4C, 0x17, 0xB9, 0x35, 0xDA, 0xE0, 0x7E, 0xE9, 0x28, 0x9c }, asf_read_unknown, 1 },
1037  { "Index", { 0xD6, 0xE2, 0x29, 0xD3, 0x35, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1038  { "Media Object Index", { 0xFE, 0xB1, 0x03, 0xF8, 0x12, 0xAD, 0x4C, 0x64, 0x84, 0x0F, 0x2A, 0x1D, 0x2F, 0x7A, 0xD4, 0x8C }, asf_read_unknown, 1 },
1039  { "Timecode Index", { 0x3C, 0xB7, 0x3F, 0xD0, 0x0C, 0x4A, 0x48, 0x03, 0x95, 0x3D, 0xED, 0xF7, 0xB6, 0x22, 0x8F, 0x0C }, asf_read_unknown, 0 },
1040  { "Bitrate_Mutual_Exclusion", { 0xD6, 0xE2, 0x29, 0xDC, 0x35, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1041  { "Error Correction", { 0x75, 0xB2, 0x26, 0x35, 0x66, 0x8E, 0x11, 0xCF, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C }, asf_read_unknown, 1 },
1042  { "Content Branding", { 0x22, 0x11, 0xB3, 0xFA, 0xBD, 0x23, 0x11, 0xD2, 0xB4, 0xB7, 0x00, 0xA0, 0xC9, 0x55, 0xFC, 0x6E }, asf_read_unknown, 1 },
1043  { "Content Encryption", { 0x22, 0x11, 0xB3, 0xFB, 0xBD, 0x23, 0x11, 0xD2, 0xB4, 0xB7, 0x00, 0xA0, 0xC9, 0x55, 0xFC, 0x6E }, asf_read_unknown, 1 },
1044  { "Extended Content Encryption", { 0x29, 0x8A, 0xE6, 0x14, 0x26, 0x22, 0x4C, 0x17, 0xB9, 0x35, 0xDA, 0xE0, 0x7E, 0xE9, 0x28, 0x9C }, asf_read_unknown, 1 },
1045  { "Digital Signature", { 0x22, 0x11, 0xB3, 0xFC, 0xBD, 0x23, 0x11, 0xD2, 0xB4, 0xB7, 0x00, 0xA0, 0xC9, 0x55, 0xFC, 0x6E }, asf_read_unknown, 1 },
1046  { "Extended Stream Properties", { 0x14, 0xE6, 0xA5, 0xCB, 0xC6, 0x72, 0x43, 0x32, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A }, asf_read_ext_stream_properties, 1 },
1047  { "Advanced Mutual Exclusion", { 0xA0, 0x86, 0x49, 0xCF, 0x47, 0x75, 0x46, 0x70, 0x8A, 0x16, 0x6E, 0x35, 0x35, 0x75, 0x66, 0xCD }, asf_read_unknown, 1 },
1048  { "Group Mutual Exclusion", { 0xD1, 0x46, 0x5A, 0x40, 0x5A, 0x79, 0x43, 0x38, 0xB7, 0x1B, 0xE3, 0x6B, 0x8F, 0xD6, 0xC2, 0x49 }, asf_read_unknown, 1},
1049  { "Stream Prioritization", { 0xD4, 0xFE, 0xD1, 0x5B, 0x88, 0xD3, 0x45, 0x4F, 0x81, 0xF0, 0xED, 0x5C, 0x45, 0x99, 0x9E, 0x24 }, asf_read_unknown, 1 },
1050  { "Bandwidth Sharing Object", { 0xA6, 0x96, 0x09, 0xE6, 0x51, 0x7B, 0x11, 0xD2, 0xB6, 0xAF, 0x00, 0xC0, 0x4F, 0xD9, 0x08, 0xE9 }, asf_read_unknown, 1 },
1051  { "Metadata", { 0xC5, 0xF8, 0xCB, 0xEA, 0x5B, 0xAF, 0x48, 0x77, 0x84, 0x67, 0xAA, 0x8C, 0x44, 0xFA, 0x4C, 0xCA }, asf_read_metadata_obj, 1 },
1052  { "Metadata Library", { 0x44, 0x23, 0x1C, 0x94, 0x94, 0x98, 0x49, 0xD1, 0xA1, 0x41, 0x1D, 0x13, 0x4E, 0x45, 0x70, 0x54 }, asf_read_metadata_obj, 1 },
1053  { "Audio Spread", { 0xBF, 0xC3, 0xCD, 0x50, 0x61, 0x8F, 0x11, 0xCF, 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20 }, asf_read_unknown, 1 },
1054  { "Index Parameters", { 0xD6, 0xE2, 0x29, 0xDF, 0x35, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1055  { "Content Encryption System Windows Media DRM Network Devices",
1056  { 0x7A, 0x07, 0x9B, 0xB6, 0xDA, 0XA4, 0x4e, 0x12, 0xA5, 0xCA, 0x91, 0xD3, 0x8D, 0xC1, 0x1A, 0x8D }, asf_read_unknown, 1 },
1057  { "Mutex Language", { 0xD6, 0xE2, 0x2A, 0x00, 0x25, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1058  { "Mutex Bitrate", { 0xD6, 0xE2, 0x2A, 0x01, 0x25, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1059  { "Mutex Unknown", { 0xD6, 0xE2, 0x2A, 0x02, 0x25, 0xDA, 0x11, 0xD1, 0x90, 0x34, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xBE }, asf_read_unknown, 1 },
1060  { "Bandwidth Sharing Exclusive", { 0xAF, 0x60, 0x60, 0xAA, 0x51, 0x97, 0x11, 0xD2, 0xB6, 0xAF, 0x00, 0xC0, 0x4F, 0xD9, 0x08, 0xE9 }, asf_read_unknown, 1 },
1061  { "Bandwidth Sharing Partial", { 0xAF, 0x60, 0x60, 0xAB, 0x51, 0x97, 0x11, 0xD2, 0xB6, 0xAF, 0x00, 0xC0, 0x4F, 0xD9, 0x08, 0xE9 }, asf_read_unknown, 1 },
1062  { "Payload Extension System Timecode", { 0x39, 0x95, 0x95, 0xEC, 0x86, 0x67, 0x4E, 0x2D, 0x8F, 0xDB, 0x98, 0x81, 0x4C, 0xE7, 0x6C, 0x1E }, asf_read_unknown, 1 },
1063  { "Payload Extension System File Name", { 0xE1, 0x65, 0xEC, 0x0E, 0x19, 0xED, 0x45, 0xD7, 0xB4, 0xA7, 0x25, 0xCB, 0xD1, 0xE2, 0x8E, 0x9B }, asf_read_unknown, 1 },
1064  { "Payload Extension System Content Type", { 0xD5, 0x90, 0xDC, 0x20, 0x07, 0xBC, 0x43, 0x6C, 0x9C, 0xF7, 0xF3, 0xBB, 0xFB, 0xF1, 0xA4, 0xDC }, asf_read_unknown, 1 },
1065  { "Payload Extension System Pixel Aspect Ratio", { 0x1, 0x1E, 0xE5, 0x54, 0xF9, 0xEA, 0x4B, 0xC8, 0x82, 0x1A, 0x37, 0x6B, 0x74, 0xE4, 0xC4, 0xB8 }, asf_read_unknown, 1 },
1066  { "Payload Extension System Sample Duration", { 0xC6, 0xBD, 0x94, 0x50, 0x86, 0x7F, 0x49, 0x07, 0x83, 0xA3, 0xC7, 0x79, 0x21, 0xB7, 0x33, 0xAD }, asf_read_unknown, 1 },
1067  { "Payload Extension System Encryption Sample ID", { 0x66, 0x98, 0xB8, 0x4E, 0x0A, 0xFA, 0x43, 0x30, 0xAE, 0xB2, 0x1C, 0x0A, 0x98, 0xD7, 0xA4, 0x4D }, asf_read_unknown, 1 },
1068  { "Payload Extension System Degradable JPEG", { 0x00, 0xE1, 0xAF, 0x06, 0x7B, 0xEC, 0x11, 0xD1, 0xA5, 0x82, 0x00, 0xC0, 0x4F, 0xC2, 0x9C, 0xFB }, asf_read_unknown, 1 },
1069 };
1070 
1071 #define READ_LEN(flag, name, len) \
1072  do { \
1073  if ((flag) == name ## IS_BYTE) \
1074  len = avio_r8(pb); \
1075  else if ((flag) == name ## IS_WORD) \
1076  len = avio_rl16(pb); \
1077  else if ((flag) == name ## IS_DWORD) \
1078  len = avio_rl32(pb); \
1079  else \
1080  len = 0; \
1081  } while(0)
1082 
1083 static int asf_read_subpayload(AVFormatContext *s, AVPacket *pkt, int is_header)
1084 {
1085  ASFContext *asf = s->priv_data;
1086  AVIOContext *pb = s->pb;
1087  uint8_t sub_len;
1088  int ret, i;
1089 
1090  if (is_header) {
1091  asf->dts_delta = avio_r8(pb);
1092  if (asf->nb_mult_left) {
1093  asf->mult_sub_len = avio_rl16(pb); // total
1094  }
1095  asf->sub_header_offset = avio_tell(pb);
1096  asf->nb_sub = 0;
1097  asf->sub_left = 1;
1098  }
1099  sub_len = avio_r8(pb);
1100  if ((ret = av_get_packet(pb, pkt, sub_len)) < 0) // each subpayload is entire frame
1101  return ret;
1102  for (i = 0; i < asf->nb_streams; i++) {
1103  if (asf->stream_index == asf->asf_st[i]->stream_index) {
1104  pkt->stream_index = asf->asf_st[i]->index;
1105  break;
1106  }
1107  }
1108  asf->return_subpayload = 1;
1109  if (!sub_len)
1110  asf->return_subpayload = 0;
1111 
1112  if (sub_len)
1113  asf->nb_sub++;
1114  pkt->dts = asf->sub_dts + (asf->nb_sub - 1) * asf->dts_delta - asf->preroll;
1115  if (asf->nb_mult_left && (avio_tell(pb) >=
1116  (asf->sub_header_offset + asf->mult_sub_len))) {
1117  asf->sub_left = 0;
1118  asf->nb_mult_left--;
1119  }
1120  if (avio_tell(pb) >= asf->packet_offset + asf->packet_size - asf->pad_len) {
1121  asf->sub_left = 0;
1122  if (!asf->nb_mult_left) {
1123  avio_skip(pb, asf->pad_len);
1124  if (avio_tell(pb) != asf->packet_offset + asf->packet_size) {
1125  if (!asf->packet_size)
1126  return AVERROR_INVALIDDATA;
1128  "Position %"PRId64" wrong, should be %"PRId64"\n",
1129  avio_tell(pb), asf->packet_offset + asf->packet_size);
1130  avio_seek(pb, asf->packet_offset + asf->packet_size, SEEK_SET);
1131  }
1132  }
1133  }
1134 
1135  return 0;
1136 }
1137 
1138 static void reset_packet(ASFPacket *asf_pkt)
1139 {
1140  asf_pkt->size_left = 0;
1141  asf_pkt->data_size = 0;
1142  asf_pkt->duration = 0;
1143  asf_pkt->flags = 0;
1144  asf_pkt->dts = 0;
1145  asf_pkt->duration = 0;
1146  av_packet_unref(&asf_pkt->avpkt);
1147  av_init_packet(&asf_pkt->avpkt);
1148 }
1149 
1151 {
1152  ASFContext *asf = s->priv_data;
1153  AVIOContext *pb = s->pb;
1154  int ret, data_size;
1155 
1156  if (!asf_pkt->data_size) {
1157  data_size = avio_rl32(pb); // read media object size
1158  if (data_size <= 0)
1159  return AVERROR_INVALIDDATA;
1160  if ((ret = av_new_packet(&asf_pkt->avpkt, data_size)) < 0)
1161  return ret;
1162  asf_pkt->data_size = asf_pkt->size_left = data_size;
1163  } else
1164  avio_skip(pb, 4); // reading of media object size is already done
1165  asf_pkt->dts = avio_rl32(pb); // read presentation time
1166  if (asf->rep_data_len && (asf->rep_data_len >= 8))
1167  avio_skip(pb, asf->rep_data_len - 8); // skip replicated data
1168 
1169  return 0;
1170 }
1171 
1173  ASFPacket *asf_pkt)
1174 {
1175  ASFContext *asf = s->priv_data;
1176  AVIOContext *pb = s->pb;
1177  uint16_t pay_len;
1178  unsigned char *p;
1179  int ret;
1180  int skip = 0;
1181 
1182  // if replicated length is 1, subpayloads are present
1183  if (asf->rep_data_len == 1) {
1184  asf->sub_left = 1;
1185  asf->state = READ_MULTI_SUB;
1186  pkt->flags = asf_pkt->flags;
1187  if ((ret = asf_read_subpayload(s, pkt, 1)) < 0)
1188  return ret;
1189  } else {
1190  if (asf->rep_data_len)
1191  if ((ret = asf_read_replicated_data(s, asf_pkt)) < 0)
1192  return ret;
1193  pay_len = avio_rl16(pb); // payload length should be WORD
1194  if (pay_len > asf->packet_size) {
1195  av_log(s, AV_LOG_ERROR,
1196  "Error: invalid data packet size, pay_len %"PRIu16", "
1197  "asf->packet_size %"PRIu32", offset %"PRId64".\n",
1198  pay_len, asf->packet_size, avio_tell(pb));
1199  return AVERROR_INVALIDDATA;
1200  }
1201  p = asf_pkt->avpkt.data + asf_pkt->data_size - asf_pkt->size_left;
1202  if (pay_len > asf_pkt->size_left) {
1203  av_log(s, AV_LOG_ERROR,
1204  "Error: invalid buffer size, pay_len %d, data size left %d.\n",
1205  pay_len, asf_pkt->size_left);
1206  skip = pay_len - asf_pkt->size_left;
1207  pay_len = asf_pkt->size_left;
1208  }
1209  if (asf_pkt->size_left <= 0)
1210  return AVERROR_INVALIDDATA;
1211  if ((ret = avio_read(pb, p, pay_len)) < 0)
1212  return ret;
1213  if (s->key && s->keylen == 20)
1214  ff_asfcrypt_dec(s->key, p, ret);
1215  avio_skip(pb, skip);
1216  asf_pkt->size_left -= pay_len;
1217  asf->nb_mult_left--;
1218  }
1219 
1220  return 0;
1221 }
1222 
1224 {
1225  ASFContext *asf = s->priv_data;
1226  AVIOContext *pb = s->pb;
1227  int64_t offset;
1228  uint64_t size;
1229  unsigned char *p;
1230  int ret, data_size;
1231 
1232  if (!asf_pkt->data_size) {
1233  data_size = avio_rl32(pb); // read media object size
1234  if (data_size <= 0)
1235  return AVERROR_EOF;
1236  if ((ret = av_new_packet(&asf_pkt->avpkt, data_size)) < 0)
1237  return ret;
1238  asf_pkt->data_size = asf_pkt->size_left = data_size;
1239  } else
1240  avio_skip(pb, 4); // skip media object size
1241  asf_pkt->dts = avio_rl32(pb); // read presentation time
1242  if (asf->rep_data_len >= 8)
1243  avio_skip(pb, asf->rep_data_len - 8); // skip replicated data
1244  offset = avio_tell(pb);
1245 
1246  // size of the payload - size of the packet without header and padding
1247  if (asf->packet_size_internal)
1248  size = asf->packet_size_internal - offset + asf->packet_offset - asf->pad_len;
1249  else
1250  size = asf->packet_size - offset + asf->packet_offset - asf->pad_len;
1251  if (size > asf->packet_size) {
1252  av_log(s, AV_LOG_ERROR,
1253  "Error: invalid data packet size, offset %"PRId64".\n",
1254  avio_tell(pb));
1255  return AVERROR_INVALIDDATA;
1256  }
1257  p = asf_pkt->avpkt.data + asf_pkt->data_size - asf_pkt->size_left;
1258  if (size > asf_pkt->size_left || asf_pkt->size_left <= 0)
1259  return AVERROR_INVALIDDATA;
1260  if (asf_pkt->size_left > size)
1261  asf_pkt->size_left -= size;
1262  else
1263  asf_pkt->size_left = 0;
1264  if ((ret = avio_read(pb, p, size)) < 0)
1265  return ret;
1266  if (s->key && s->keylen == 20)
1267  ff_asfcrypt_dec(s->key, p, ret);
1268  if (asf->packet_size_internal)
1269  avio_skip(pb, asf->packet_size - asf->packet_size_internal);
1270  avio_skip(pb, asf->pad_len); // skip padding
1271 
1272  return 0;
1273 }
1274 
1276 {
1277  ASFContext *asf = s->priv_data;
1278  AVIOContext *pb = s->pb;
1279  int ret, i;
1280  ASFPacket *asf_pkt = NULL;
1281 
1282  if (!asf->sub_left) {
1283  uint32_t off_len, media_len;
1284  uint8_t stream_num;
1285 
1286  stream_num = avio_r8(pb);
1287  asf->stream_index = stream_num & ASF_STREAM_NUM;
1288  for (i = 0; i < asf->nb_streams; i++) {
1289  if (asf->stream_index == asf->asf_st[i]->stream_index) {
1290  asf_pkt = &asf->asf_st[i]->pkt;
1291  asf_pkt->stream_index = asf->asf_st[i]->index;
1292  break;
1293  }
1294  }
1295  if (!asf_pkt) {
1296  if (asf->packet_offset + asf->packet_size <= asf->data_offset + asf->data_size) {
1297  if (!asf->packet_size) {
1298  av_log(s, AV_LOG_ERROR, "Invalid packet size 0.\n");
1299  return AVERROR_INVALIDDATA;
1300  }
1301  avio_seek(pb, asf->packet_offset + asf->packet_size, SEEK_SET);
1302  av_log(s, AV_LOG_WARNING, "Skipping the stream with the invalid stream index %d.\n",
1303  asf->stream_index);
1304  return AVERROR(EAGAIN);
1305  } else
1306  return AVERROR_INVALIDDATA;
1307  }
1308 
1309  if (stream_num >> 7)
1310  asf_pkt->flags |= AV_PKT_FLAG_KEY;
1312  ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_, media_len);
1314  ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_, off_len);
1316  ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_, asf->rep_data_len);
1317  if (asf_pkt->size_left && (asf_pkt->frame_num != media_len)) {
1318  av_log(s, AV_LOG_WARNING, "Unfinished frame will be ignored\n");
1319  reset_packet(asf_pkt);
1320  }
1321  asf_pkt->frame_num = media_len;
1322  asf->sub_dts = off_len;
1323  if (asf->nb_mult_left) {
1324  if ((ret = asf_read_multiple_payload(s, pkt, asf_pkt)) < 0)
1325  return ret;
1326  } else if (asf->rep_data_len == 1) {
1327  asf->sub_left = 1;
1328  asf->state = READ_SINGLE;
1329  pkt->flags = asf_pkt->flags;
1330  if ((ret = asf_read_subpayload(s, pkt, 1)) < 0)
1331  return ret;
1332  } else {
1333  if ((ret = asf_read_single_payload(s, asf_pkt)) < 0)
1334  return ret;
1335  }
1336  } else {
1337  for (i = 0; i <= asf->nb_streams; i++) {
1338  if (asf->stream_index == asf->asf_st[i]->stream_index) {
1339  asf_pkt = &asf->asf_st[i]->pkt;
1340  break;
1341  }
1342  }
1343  if (!asf_pkt)
1344  return AVERROR_INVALIDDATA;
1345  pkt->flags = asf_pkt->flags;
1346  pkt->dts = asf_pkt->dts;
1347  pkt->stream_index = asf->asf_st[i]->index;
1348  if ((ret = asf_read_subpayload(s, pkt, 0)) < 0) // read subpayload without its header
1349  return ret;
1350  }
1351 
1352  return 0;
1353 }
1354 
1356 {
1357  ASFContext *asf = s->priv_data;
1358  AVIOContext *pb = s->pb;
1359  uint64_t size;
1360  uint32_t av_unused seq;
1361  unsigned char error_flags, len_flags, pay_flags;
1362 
1363  asf->packet_offset = avio_tell(pb);
1364  if (asf->packet_offset > INT64_MAX/2)
1365  asf->packet_offset = 0;
1366  error_flags = avio_r8(pb); // read Error Correction Flags
1367  if (error_flags & ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT) {
1368  if (!(error_flags & ASF_ERROR_CORRECTION_LENGTH_TYPE)) {
1369  size = error_flags & ASF_PACKET_ERROR_CORRECTION_DATA_SIZE;
1370  avio_skip(pb, size);
1371  }
1372  len_flags = avio_r8(pb);
1373  } else
1374  len_flags = error_flags;
1375  asf->prop_flags = avio_r8(pb);
1377  ASF_PPI_FLAG_PACKET_LENGTH_FIELD_, asf->packet_size_internal);
1379  ASF_PPI_FLAG_SEQUENCE_FIELD_, seq);
1381  ASF_PPI_FLAG_PADDING_LENGTH_FIELD_, asf->pad_len );
1382  asf->send_time = avio_rl32(pb); // send time
1383  avio_skip(pb, 2); // skip duration
1384  if (len_flags & ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT) { // Multiple Payloads present
1385  pay_flags = avio_r8(pb);
1386  asf->nb_mult_left = (pay_flags & ASF_NUM_OF_PAYLOADS);
1387  }
1388 
1389  return 0;
1390 }
1391 
1392 static int asf_deinterleave(AVFormatContext *s, ASFPacket *asf_pkt, int st_num)
1393 {
1394  ASFContext *asf = s->priv_data;
1395  ASFStream *asf_st = asf->asf_st[st_num];
1396  unsigned char *p = asf_pkt->avpkt.data;
1397  uint16_t pkt_len = asf->asf_st[st_num]->virtual_pkt_len;
1398  uint16_t chunk_len = asf->asf_st[st_num]->virtual_chunk_len;
1399  int nchunks = pkt_len / chunk_len;
1400  AVPacket pkt;
1401  int pos = 0, j, l, ret;
1402 
1403 
1404  if ((ret = av_new_packet(&pkt, asf_pkt->data_size)) < 0)
1405  return ret;
1406 
1407  while (asf_pkt->data_size >= asf_st->span * pkt_len + pos) {
1408  if (pos >= asf_pkt->data_size) {
1409  break;
1410  }
1411  for (l = 0; l < pkt_len; l++) {
1412  if (pos >= asf_pkt->data_size) {
1413  break;
1414  }
1415  for (j = 0; j < asf_st->span; j++) {
1416  if ((pos + chunk_len) >= asf_pkt->data_size)
1417  break;
1418  memcpy(pkt.data + pos,
1419  p + (j * nchunks + l) * chunk_len,
1420  chunk_len);
1421  pos += chunk_len;
1422  }
1423  }
1424  p += asf_st->span * pkt_len;
1425  if (p > asf_pkt->avpkt.data + asf_pkt->data_size)
1426  break;
1427  }
1428  av_packet_unref(&asf_pkt->avpkt);
1429  asf_pkt->avpkt = pkt;
1430 
1431  return 0;
1432 }
1433 
1435 {
1436  ASFContext *asf = s->priv_data;
1437  AVIOContext *pb = s->pb;
1438  int ret, i;
1439 
1440  if ((avio_tell(pb) >= asf->data_offset + asf->data_size) &&
1441  !(asf->b_flags & ASF_FLAG_BROADCAST))
1442  return AVERROR_EOF;
1443  while (!pb->eof_reached) {
1444  if (asf->state == PARSE_PACKET_HEADER) {
1446  if (pb->eof_reached)
1447  break;
1448  if (!asf->nb_mult_left)
1449  asf->state = READ_SINGLE;
1450  else
1451  asf->state = READ_MULTI;
1452  }
1453  ret = asf_read_payload(s, pkt);
1454  if (ret == AVERROR(EAGAIN)) {
1455  asf->state = PARSE_PACKET_HEADER;
1456  continue;
1457  }
1458  else if (ret < 0)
1459  return ret;
1460 
1461  switch (asf->state) {
1462  case READ_SINGLE:
1463  if (!asf->sub_left)
1464  asf->state = PARSE_PACKET_HEADER;
1465  break;
1466  case READ_MULTI_SUB:
1467  if (!asf->sub_left && !asf->nb_mult_left) {
1468  asf->state = PARSE_PACKET_HEADER;
1469  if (!asf->return_subpayload &&
1470  (avio_tell(pb) <= asf->packet_offset +
1471  asf->packet_size - asf->pad_len))
1472  avio_skip(pb, asf->pad_len); // skip padding
1473  if (asf->packet_offset + asf->packet_size > avio_tell(pb))
1474  avio_seek(pb, asf->packet_offset + asf->packet_size, SEEK_SET);
1475  } else if (!asf->sub_left)
1476  asf->state = READ_MULTI;
1477  break;
1478  case READ_MULTI:
1479  if (!asf->nb_mult_left) {
1480  asf->state = PARSE_PACKET_HEADER;
1481  if (!asf->return_subpayload &&
1482  (avio_tell(pb) <= asf->packet_offset +
1483  asf->packet_size - asf->pad_len))
1484  avio_skip(pb, asf->pad_len); // skip padding
1485  if (asf->packet_offset + asf->packet_size > avio_tell(pb))
1486  avio_seek(pb, asf->packet_offset + asf->packet_size, SEEK_SET);
1487  }
1488  break;
1489  }
1490  if (asf->return_subpayload) {
1491  asf->return_subpayload = 0;
1492  return 0;
1493  }
1494  for (i = 0; i < asf->nb_streams; i++) {
1495  ASFPacket *asf_pkt = &asf->asf_st[i]->pkt;
1496  if (asf_pkt && !asf_pkt->size_left && asf_pkt->data_size) {
1497  if (asf->asf_st[i]->span > 1 &&
1498  asf->asf_st[i]->type == AVMEDIA_TYPE_AUDIO)
1499  if ((ret = asf_deinterleave(s, asf_pkt, i)) < 0)
1500  return ret;
1501  av_packet_move_ref(pkt, &asf_pkt->avpkt);
1502  pkt->stream_index = asf->asf_st[i]->index;
1503  pkt->flags = asf_pkt->flags;
1504  pkt->dts = asf_pkt->dts - asf->preroll;
1505  asf_pkt->data_size = 0;
1506  asf_pkt->frame_num = 0;
1507  return 0;
1508  }
1509  }
1510  }
1511 
1512  if (pb->eof_reached)
1513  return AVERROR_EOF;
1514 
1515  return 0;
1516 }
1517 
1519 {
1520  ASFContext *asf = s->priv_data;
1521  int i;
1522 
1523  for (i = 0; i < ASF_MAX_STREAMS; i++) {
1524  av_dict_free(&asf->asf_sd[i].asf_met);
1525  if (i < asf->nb_streams) {
1526  av_packet_unref(&asf->asf_st[i]->pkt.avpkt);
1527  av_freep(&asf->asf_st[i]);
1528  }
1529  }
1530 
1531  asf->nb_streams = 0;
1532  return 0;
1533 }
1534 
1536 {
1537  ASFContext *asf = s->priv_data;
1538  int i;
1539 
1540  asf->state = PARSE_PACKET_HEADER;
1541  asf->offset = 0;
1542  asf->return_subpayload = 0;
1543  asf->sub_left = 0;
1544  asf->sub_header_offset = 0;
1545  asf->packet_offset = asf->first_packet_offset;
1546  asf->pad_len = 0;
1547  asf->rep_data_len = 0;
1548  asf->dts_delta = 0;
1549  asf->mult_sub_len = 0;
1550  asf->nb_mult_left = 0;
1551  asf->nb_sub = 0;
1552  asf->prop_flags = 0;
1553  asf->sub_dts = 0;
1554  for (i = 0; i < asf->nb_streams; i++) {
1555  ASFPacket *pkt = &asf->asf_st[i]->pkt;
1556  pkt->size_left = 0;
1557  pkt->data_size = 0;
1558  pkt->duration = 0;
1559  pkt->flags = 0;
1560  pkt->dts = 0;
1561  pkt->duration = 0;
1562  av_packet_unref(&pkt->avpkt);
1563  av_init_packet(&pkt->avpkt);
1564  }
1565 }
1566 
1567 /*
1568  * Find a timestamp for the requested position within the payload
1569  * where the pos (position) is the offset inside the Data Object.
1570  * When position is not on the packet boundary, asf_read_timestamp tries
1571  * to find the closest packet offset after this position. If this packet
1572  * is a key frame, this packet timestamp is read and an index entry is created
1573  * for the packet. If this packet belongs to the requested stream,
1574  * asf_read_timestamp upgrades pos to the packet beginning offset and
1575  * returns this packet's dts. So returned dts is the dts of the first key frame with
1576  * matching stream number after given position.
1577  */
1578 static int64_t asf_read_timestamp(AVFormatContext *s, int stream_index,
1579  int64_t *pos, int64_t pos_limit)
1580 {
1581  ASFContext *asf = s->priv_data;
1582  int64_t pkt_pos = *pos, pkt_offset, dts = AV_NOPTS_VALUE, data_end;
1583  AVPacket pkt;
1584  int n;
1585 
1586  data_end = asf->data_offset + asf->data_size;
1587 
1588  n = (pkt_pos - asf->first_packet_offset + asf->packet_size - 1) /
1589  asf->packet_size;
1590  n = av_clip(n, 0, ((data_end - asf->first_packet_offset) / asf->packet_size - 1));
1591  pkt_pos = asf->first_packet_offset + n * asf->packet_size;
1592 
1593  avio_seek(s->pb, pkt_pos, SEEK_SET);
1594  pkt_offset = pkt_pos;
1595 
1596  reset_packet_state(s);
1597  while (avio_tell(s->pb) < data_end) {
1598 
1599  int i, ret, st_found;
1600 
1601  av_init_packet(&pkt);
1602  pkt_offset = avio_tell(s->pb);
1603  if ((ret = asf_read_packet(s, &pkt)) < 0) {
1604  dts = AV_NOPTS_VALUE;
1605  return ret;
1606  }
1607  // ASFPacket may contain fragments of packets belonging to different streams,
1608  // pkt_offset is the offset of the first fragment within it.
1609  if ((pkt_offset >= (pkt_pos + asf->packet_size)))
1610  pkt_pos += asf->packet_size;
1611  for (i = 0; i < asf->nb_streams; i++) {
1612  ASFStream *st = asf->asf_st[i];
1613 
1614  st_found = 0;
1615  if (pkt.flags & AV_PKT_FLAG_KEY) {
1616  dts = pkt.dts;
1617  if (dts) {
1618  av_add_index_entry(s->streams[pkt.stream_index], pkt_pos,
1619  dts, pkt.size, 0, AVINDEX_KEYFRAME);
1620  if (stream_index == st->index) {
1621  st_found = 1;
1622  break;
1623  }
1624  }
1625  }
1626  }
1627  if (st_found)
1628  break;
1629  av_packet_unref(&pkt);
1630  }
1631  *pos = pkt_pos;
1632 
1633  av_packet_unref(&pkt);
1634  return dts;
1635 }
1636 
1637 static int asf_read_seek(AVFormatContext *s, int stream_index,
1638  int64_t timestamp, int flags)
1639 {
1640  ASFContext *asf = s->priv_data;
1641  int idx, ret;
1642 
1643  if (s->streams[stream_index]->nb_index_entries && asf->is_simple_index) {
1644  idx = av_index_search_timestamp(s->streams[stream_index], timestamp, flags);
1645  if (idx < 0 || idx >= s->streams[stream_index]->nb_index_entries)
1646  return AVERROR_INVALIDDATA;
1647  avio_seek(s->pb, s->streams[stream_index]->index_entries[idx].pos, SEEK_SET);
1648  } else {
1649  if ((ret = ff_seek_frame_binary(s, stream_index, timestamp, flags)) < 0)
1650  return ret;
1651  }
1652 
1653  reset_packet_state(s);
1654 
1655  return 0;
1656 }
1657 
1659 {
1660  int j, ret;
1661  const GUIDParseTable *g;
1662 
1663  swap_guid(guid);
1664  g = gdef;
1665  for (j = 0; j < FF_ARRAY_ELEMS(gdef); j++) {
1666  if (!(ret = memcmp(guid, g->guid, sizeof(g->guid))))
1667  return g;
1668  g++;
1669  }
1670 
1671  return NULL;
1672 }
1673 
1674 static int detect_unknown_subobject(AVFormatContext *s, int64_t offset, int64_t size)
1675 {
1676  ASFContext *asf = s->priv_data;
1677  AVIOContext *pb = s->pb;
1678  const GUIDParseTable *g = NULL;
1679  ff_asf_guid guid;
1680  int ret;
1681 
1682  if (offset > INT64_MAX - size)
1683  return AVERROR_INVALIDDATA;
1684 
1685  while (avio_tell(pb) <= offset + size) {
1686  if (avio_tell(pb) == asf->offset)
1687  break;
1688  asf->offset = avio_tell(pb);
1689  if ((ret = ff_get_guid(pb, &guid)) < 0)
1690  return ret;
1691  g = find_guid(guid);
1692  if (g) {
1693  if ((ret = g->read_object(s, g)) < 0)
1694  return ret;
1695  } else {
1696  GUIDParseTable g2;
1697 
1698  g2.name = "Unknown";
1699  g2.is_subobject = 1;
1700  asf_read_unknown(s, &g2);
1701  }
1702  }
1703 
1704  return 0;
1705 }
1706 
1708 {
1709  ASFContext *asf = s->priv_data;
1710  AVIOContext *pb = s->pb;
1711  const GUIDParseTable *g = NULL;
1712  ff_asf_guid guid;
1713  int i, ret;
1714  uint64_t size;
1715 
1716  asf->preroll = 0;
1717  asf->is_simple_index = 0;
1718  ff_get_guid(pb, &guid);
1719  if (ff_guidcmp(&guid, &ff_asf_header))
1720  return AVERROR_INVALIDDATA;
1721  avio_skip(pb, 8); // skip header object size
1722  avio_skip(pb, 6); // skip number of header objects and 2 reserved bytes
1723  asf->data_reached = 0;
1724 
1725  /* 1 is here instead of pb->eof_reached because (when not streaming), Data are skipped
1726  * for the first time,
1727  * Index object is processed and got eof and then seeking back to the Data is performed.
1728  */
1729  while (1) {
1730  // for the cases when object size is invalid
1731  if (avio_tell(pb) == asf->offset)
1732  break;
1733  asf->offset = avio_tell(pb);
1734  if ((ret = ff_get_guid(pb, &guid)) < 0) {
1735  if (ret == AVERROR_EOF && asf->data_reached)
1736  break;
1737  else
1738  goto failed;
1739  }
1740  g = find_guid(guid);
1741  if (g) {
1742  asf->unknown_offset = asf->offset;
1743  asf->is_header = 1;
1744  if ((ret = g->read_object(s, g)) < 0)
1745  goto failed;
1746  } else {
1747  size = avio_rl64(pb);
1748  align_position(pb, asf->offset, size);
1749  }
1750  if (asf->data_reached &&
1751  (!(pb->seekable & AVIO_SEEKABLE_NORMAL) ||
1752  (asf->b_flags & ASF_FLAG_BROADCAST)))
1753  break;
1754  }
1755 
1756  if (!asf->data_reached) {
1757  av_log(s, AV_LOG_ERROR, "Data Object was not found.\n");
1758  ret = AVERROR_INVALIDDATA;
1759  goto failed;
1760  }
1761  if (pb->seekable & AVIO_SEEKABLE_NORMAL)
1762  avio_seek(pb, asf->first_packet_offset, SEEK_SET);
1763 
1764  for (i = 0; i < asf->nb_streams; i++) {
1765  const char *rfc1766 = asf->asf_sd[asf->asf_st[i]->lang_idx].langs;
1766  AVStream *st = s->streams[asf->asf_st[i]->index];
1767  set_language(s, rfc1766, &st->metadata);
1768  }
1769 
1770  for (i = 0; i < ASF_MAX_STREAMS; i++) {
1771  AVStream *st = NULL;
1772 
1773  st = find_stream(s, i);
1774  if (st) {
1776  if (asf->asf_sd[i].aspect_ratio.num > 0 && asf->asf_sd[i].aspect_ratio.den > 0) {
1779  }
1780  }
1781  }
1782 
1783  return 0;
1784 
1785 failed:
1786  asf_read_close(s);
1787  return ret;
1788 }
1789 
1791  .name = "asf_o",
1792  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1793  .priv_data_size = sizeof(ASFContext),
1794  .read_probe = asf_probe,
1798  .read_timestamp = asf_read_timestamp,
1801 };
int nb_streams
Definition: asfdec_o.c:121
int data_reached
Definition: asfdec_o.c:95
const ff_asf_guid ff_asf_header
Definition: asf.c:23
static void swap_guid(ff_asf_guid guid)
Definition: asfdec_o.c:160
static int asf_read_ext_stream_properties(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:842
#define NULL
Definition: coverity.c:32
#define AVFMT_NOBINSEARCH
Format does not allow to fall back on binary search via read_timestamp.
Definition: avformat.h:475
static int asf_read_close(AVFormatContext *s)
Definition: asfdec_o.c:1518
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define ASF_BYTE_ARRAY
Definition: asfdec_o.c:48
uint8_t stream_index
Definition: asfdec_o.c:77
static int asf_read_packet_header(AVFormatContext *s)
Definition: asfdec_o.c:1355
int size
int64_t data_offset
Definition: asfdec_o.c:113
static int asf_read_unknown(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:174
#define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE
Definition: asf.h:137
static void align_position(AVIOContext *pb, int64_t offset, uint64_t size)
Definition: asfdec_o.c:168
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:2048
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3136
int size_left
Definition: asfdec_o.c:72
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4899
const char * g
Definition: vf_curves.c:115
const char * desc
Definition: nvenc.c:65
int64_t pos
Definition: avformat.h:803
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
uint64_t data_offset
beginning of the first data packet
Definition: asfdec_f.c:85
int data_size
Definition: asfdec_o.c:70
static int asf_read_marker(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:224
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3900
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:936
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:875
int size
Definition: avcodec.h:1446
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
uint32_t packet_size
Definition: asfdec_o.c:101
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1103
uint16_t virtual_pkt_len
Definition: asfdec_o.c:82
#define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE
Definition: asf.h:153
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
const ff_asf_guid ff_asf_command_stream
Definition: asf.c:65
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:331
const char * name
Definition: asfdec_o.c:59
static void get_id3_tag(AVFormatContext *s, int len)
Definition: asfdec_o.c:465
#define PUT_UTF8(val, tmp, PUT_BYTE)
Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
Definition: common.h:438
static int asf_read_stream_properties(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:725
static AVPacket pkt
#define ASF_UNICODE
Definition: asfdec_o.c:46
static int asf_read_replicated_data(AVFormatContext *s, ASFPacket *asf_pkt)
Definition: asfdec_o.c:1150
ASFStreamData asf_sd[ASF_MAX_STREAMS]
Definition: asfdec_o.c:120
int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
Create a stream for each APIC (attached picture) extracted from the ID3v2 header. ...
Definition: id3v2.c:1152
int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a UTF-16 string from pb and convert it to UTF-8.
int return_subpayload
Definition: asfdec_o.c:139
static int asf_read_language_list(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:910
Macro definitions for various function/variable attributes.
int in_asf_read_unknown
Definition: asfdec_o.c:116
AVChapter * avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
Add a new chapter.
Definition: utils.c:4597
Format I/O context.
Definition: avformat.h:1351
static const GUIDParseTable * find_guid(ff_asf_guid guid)
Definition: asfdec_o.c:1658
char str[32]
Definition: internal.h:50
#define ASF_STREAM_NUM
Definition: asfdec_o.c:51
static int process_metadata(AVFormatContext *s, const uint8_t *name, uint16_t name_len, uint16_t val_len, uint16_t type, AVDictionary **met)
Definition: asfdec_o.c:477
Public dictionary API.
static int64_t start_time
Definition: ffplay.c:330
static int asf_read_metadata_obj(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:582
uint8_t
static int asf_read_generic_value(AVIOContext *pb, int type, uint64_t *value)
Definition: asfdec_o.c:321
uint8_t stream_index
Definition: asfdec_o.c:73
static int nb_streams
Definition: ffprobe.c:276
#define av_malloc(s)
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: avcodec.h:3966
const ff_asf_guid ff_asf_audio_stream
Definition: asf.c:39
static int asf_store_aspect_ratio(AVFormatContext *s, uint8_t st_num, uint8_t *name, int type)
Definition: asfdec_o.c:562
int is_simple_index
Definition: asfdec_o.c:96
AVOptions.
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
Create chapters for all CHAP tags found in the ID3v2 header.
Definition: id3v2.c:1192
uint8_t dts_delta
Definition: asfdec_o.c:128
#define BMP_HEADER_SIZE
Definition: asfdec_o.c:53
int id
Format-specific stream ID.
Definition: avformat.h:881
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4469
int64_t send_time
Definition: asfdec_o.c:102
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
static int asf_read_data(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:936
uint8_t * data
Definition: avcodec.h:1445
int64_t offset
Definition: asfdec_o.c:111
int64_t packet_offset
Definition: asfdec_o.c:130
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:653
static void reset_packet_state(AVFormatContext *s)
Definition: asfdec_o.c:1535
uint32_t tag
Definition: movenc.c:1478
#define AVERROR_EOF
End of file.
Definition: error.h:55
enum AVCodecID id
Definition: internal.h:51
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
AVPacket pkt
Definition: asfdec_f.c:51
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:313
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:647
int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian)
Definition: riffdec.c:91
uint32_t pad_len
Definition: asfdec_o.c:131
AVRational aspect_ratio
Definition: asfdec_o.c:91
static int asf_read_content_desc(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:629
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3929
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1477
#define GET_UTF16(val, GET_16BIT, ERROR)
Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:410
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
int16_t lang_idx
Definition: asfdec_o.c:84
#define AVINDEX_KEYFRAME
Definition: avformat.h:810
static int asf_probe(AVProbeData *pd)
Definition: asfdec_o.c:151
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:258
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
int indexed
Definition: asfdec_o.c:80
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2159
#define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE
Definition: asf.h:148
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:769
int type
Definition: asfdec_o.c:79
#define AVERROR(e)
Definition: error.h:43
#define ASF_QWORD
Definition: asfdec_o.c:45
uint64_t preroll
Definition: asfdec_o.c:99
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len)
Definition: asfcrypt.c:147
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
static int asf_read_ext_content(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:509
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3896
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
Definition: id3v2.c:1136
int64_t sub_dts
Definition: asfdec_o.c:127
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int ff_get_guid(AVIOContext *s, ff_asf_guid *g)
Definition: riffdec.c:32
ff_asf_guid guid
Definition: asfdec_o.c:60
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:947
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:117
int index
Definition: asfdec_o.c:78
static struct tm * gmtime_r(const time_t *clock, struct tm *result)
Definition: time_internal.h:26
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1451
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:638
static int asf_deinterleave(AVFormatContext *s, ASFPacket *asf_pkt, int st_num)
Definition: asfdec_o.c:1392
#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT
Definition: asf.h:127
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
static struct @303 state
const CodecMime ff_id3v2_mime_tags[]
Definition: id3v2.c:130
common internal API header
static int asf_read_multiple_payload(AVFormatContext *s, AVPacket *pkt, ASFPacket *asf_pkt)
Definition: asfdec_o.c:1172
#define ASF_FLAG_BROADCAST
Definition: asfdec_o.c:47
static int asf_read_single_payload(AVFormatContext *s, ASFPacket *asf_pkt)
Definition: asfdec_o.c:1223
static int asf_read_payload(AVFormatContext *s, AVPacket *pkt)
Definition: asfdec_o.c:1275
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
static int asf_read_value(AVFormatContext *s, const uint8_t *name, uint16_t val_len, int type, AVDictionary **met)
Definition: asfdec_o.c:280
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
static int asf_read_simple_index(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:972
#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE
Definition: asfdec_o.c:56
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
uint32_t frame_num
Definition: asfdec_o.c:68
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
AVInputFormat ff_asf_o_demuxer
Definition: asfdec_o.c:1790
int64_t dts
Definition: asfdec_o.c:67
ASFStream * asf_st
currently decoded stream
Definition: asfdec_f.c:112
static int get_asf_string(AVIOContext *pb, int maxlen, char *buf, int buflen)
Definition: asfdec_o.c:207
uint64_t data_size
Definition: asfdec_o.c:108
#define ASF_WORD
Definition: asfdec_o.c:42
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
#define ASF_ERROR_CORRECTION_LENGTH_TYPE
Definition: asfdec_o.c:55
int32_t
#define READ_LEN(flag, name, len)
Definition: asfdec_o.c:1071
#define s(width, name)
Definition: cbs_vp9.c:257
const ff_asf_guid ff_asf_ext_stream_embed_stream_header
Definition: asf.c:100
static void set_language(AVFormatContext *s, const char *rfc1766, AVDictionary **met)
Definition: asfdec_o.c:829
int n
Definition: avisynth_c.h:684
AVDictionary * metadata
Definition: avformat.h:938
static int64_t asf_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos, int64_t pos_limit)
Definition: asfdec_o.c:1578
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: asfdec_o.c:1637
enum ASFContext::@237 state
if(ret< 0)
Definition: vf_mcdeint.c:279
#define FF_ARRAY_ELEMS(a)
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:842
unsigned int nb_sub
Definition: asfdec_o.c:136
#define ASF_BOOL
Definition: asfdec_o.c:41
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:548
#define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT
Definition: asf.h:108
uint8_t ff_asf_guid[16]
Definition: riff.h:90
Stream structure.
Definition: avformat.h:874
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
#define ASF_NUM_OF_PAYLOADS
Definition: asfdec_o.c:54
uint32_t rep_data_len
Definition: asfdec_o.c:132
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
uint32_t prop_flags
Definition: asfdec_o.c:106
AVPacket avpkt
Definition: asfdec_o.c:66
uint32_t packet_size_internal
Definition: asfdec_o.c:129
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
const ff_asf_guid ff_asf_video_stream
Definition: asf.c:53
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:598
static int parse_video_info(AVFormatContext *avfmt, AVIOContext *pb, AVStream *st)
Definition: asfdec_o.c:701
static int asf_read_picture(AVFormatContext *s, int len)
Definition: asfdec_o.c:365
#define AVFMT_NOGENSEARCH
Format does not allow to fall back on generic search.
Definition: avformat.h:476
void * buf
Definition: avisynth_c.h:690
int64_t first_packet_offset
Definition: asfdec_o.c:114
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
int nb_index_entries
Definition: avformat.h:1105
double value
Definition: eval.c:98
static const GUIDParseTable gdef[]
Definition: asfdec_o.c:1021
AVDictionary * asf_met
Definition: asfdec_o.c:90
static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: asfdec_o.c:1434
Rational number (pair of numerator and denominator).
Definition: rational.h:58
#define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE
Definition: asf.h:132
#define ASF_DWORD
Definition: asfdec_o.c:44
byte swapping routines
uint64_t sub_left
Definition: asfdec_o.c:135
cl_device_type type
uint64_t unknown_size
Definition: asfdec_o.c:109
AVMediaType
Definition: avutil.h:199
#define snprintf
Definition: snprintf.h:34
uint16_t mult_sub_len
Definition: asfdec_o.c:137
This structure contains the data a format has to probe a file.
Definition: avformat.h:448
uint32_t b_flags
Definition: asfdec_o.c:105
ASFPacket pkt
Definition: asfdec_o.c:85
static int64_t pts
int64_t unknown_offset
Definition: asfdec_o.c:115
static void reset_packet(ASFPacket *asf_pkt)
Definition: asfdec_o.c:1138
#define flags(name, subs,...)
Definition: cbs_av1.c:610
int duration
Definition: asfdec_o.c:71
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:923
int is_header
Definition: asfdec_o.c:97
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
const uint8_t * key
Definition: avformat.h:1527
int64_t bitrate
Definition: h264_levels.c:89
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:753
Main libavformat public API header.
int
#define ASF_MAX_STREAMS
Definition: asfdec_o.c:52
uint64_t sub_header_offset
Definition: asfdec_o.c:126
const ff_asf_guid ff_asf_jfif_media
Definition: asf.c:57
#define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE
Definition: asf.h:142
common internal and external API header
static int asf_read_metadata(AVFormatContext *s, const char *title, uint16_t len, unsigned char *ch, uint16_t buflen)
Definition: asfdec_o.c:266
int is_subobject
Definition: asfdec_o.c:62
uint64_t nb_packets
how many packets are there in the file, invalid if broadcasting
Definition: asfdec_o.c:100
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:913
static int asf_read_subpayload(AVFormatContext *s, AVPacket *pkt, int is_header)
Definition: asfdec_o.c:1083
#define ASF_GUID
Definition: asfdec_o.c:43
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:927
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3317
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
Read an ID3v2 tag, including supported extra metadata.
Definition: id3v2.c:1130
int den
Denominator.
Definition: rational.h:60
#define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE
Definition: asf.h:158
int ff_get_bmp_header(AVIOContext *pb, AVStream *st, uint32_t *size)
Read BITMAPINFOHEADER structure and set AVStream codec width, height and bits_per_encoded_sample fiel...
Definition: riffdec.c:211
static int asf_read_properties(AVFormatContext *s, const GUIDParseTable *g)
Definition: asfdec_o.c:658
int eof_reached
true if eof reached
Definition: avio.h:239
int len
static int asf_set_metadata(AVFormatContext *s, const uint8_t *name, int type, AVDictionary **met)
Definition: asfdec_o.c:344
void * priv_data
Format private data.
Definition: avformat.h:1379
static AVStream * find_stream(AVFormatContext *s, uint16_t st_num)
Definition: asfdec_o.c:546
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1444
int duration
Definition: asfdec_o.c:103
uint64_t nb_mult_left
Definition: asfdec_o.c:138
char langs[32]
Definition: asfdec_o.c:89
int stream_index
Definition: asfdec_f.c:110
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:647
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1021
const char *const ff_id3v2_picture_types[21]
Definition: id3v2.c:106
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:358
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3904
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: avcodec.h:1447
int(* read_object)(AVFormatContext *, const struct GUIDParseTable *)
Definition: asfdec_o.c:61
int flags
Definition: asfdec_o.c:69
static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
Definition: riff.h:116
enum AVCodecID id
This structure stores compressed data.
Definition: avcodec.h:1422
uint64_t avio_rl64(AVIOContext *s)
Definition: aviobuf.c:777
int8_t span
Definition: asfdec_o.c:81
uint16_t virtual_chunk_len
Definition: asfdec_o.c:83
AVPacket attached_pic
For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet will contain the attached pictu...
Definition: avformat.h:956
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
Perform a binary search using av_index_search_timestamp() and AVInputFormat.read_timestamp().
Definition: utils.c:2174
#define av_unused
Definition: attributes.h:125
static int asf_read_header(AVFormatContext *s)
Definition: asfdec_o.c:1707
static int detect_unknown_subobject(AVFormatContext *s, int64_t offset, int64_t size)
Definition: asfdec_o.c:1674
static uint8_t tmp[11]
Definition: aes_ctr.c:26