FFmpeg  4.3.6
rmdec.c
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1 /*
2  * "Real" compatible demuxer.
3  * Copyright (c) 2000, 2001 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 <inttypes.h>
23 
24 #include "libavutil/avassert.h"
25 #include "libavutil/avstring.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/dict.h"
30 #include "avformat.h"
31 #include "avio_internal.h"
32 #include "internal.h"
33 #include "rmsipr.h"
34 #include "rm.h"
35 
36 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
37 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
38 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
39 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
40 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
41 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
42 
43 struct RMStream {
44  AVPacket pkt; ///< place to store merged video frame / reordered audio data
45  int videobufsize; ///< current assembled frame size
46  int videobufpos; ///< position for the next slice in the video buffer
47  int curpic_num; ///< picture number of current frame
49  int64_t pktpos; ///< first slice position in file
50  /// Audio descrambling matrix parameters
51  int64_t audiotimestamp; ///< Audio packet timestamp
52  int sub_packet_cnt; // Subpacket counter, used while reading
53  int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
54  int audio_framesize; /// Audio frame size from container
55  int sub_packet_lengths[16]; /// Length of each subpacket
56  int32_t deint_id; ///< deinterleaver used in audio stream
57 };
58 
59 typedef struct RMDemuxContext {
64  int audio_stream_num; ///< Stream number for audio packets
65  int audio_pkt_cnt; ///< Output packet counter
66  int data_end;
68 
69 static int rm_read_close(AVFormatContext *s);
70 
71 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
72 {
73  int read = avio_get_str(pb, len, buf, buf_size);
74 
75  if (read > 0)
76  avio_skip(pb, len - read);
77 }
78 
79 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
80 {
81  get_strl(pb, buf, buf_size, avio_r8(pb));
82 }
83 
85 {
86  if (size >= 1<<24) {
87  av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
88  return -1;
89  }
90  return ff_get_extradata(s, par, pb, size);
91 }
92 
93 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
94 {
95  char buf[1024];
96  int i;
97 
98  for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
99  int len = wide ? avio_rb16(pb) : avio_r8(pb);
100  if (len > 0) {
101  get_strl(pb, buf, sizeof(buf), len);
102  av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
103  }
104  }
105 }
106 
108 {
109  RMStream *rms = av_mallocz(sizeof(RMStream));
110  if (!rms)
111  return NULL;
112  rms->curpic_num = -1;
113  return rms;
114 }
115 
117 {
118  if (!rms)
119  return;
120 
121  av_packet_unref(&rms->pkt);
122 }
123 
125  AVStream *st, RMStream *ast, int read_all)
126 {
127  char buf[256];
128  uint32_t version;
129  int ret;
130 
131  /* ra type header */
132  version = avio_rb16(pb); /* version */
133  if (version == 3) {
134  unsigned bytes_per_minute;
135  int header_size = avio_rb16(pb);
136  int64_t startpos = avio_tell(pb);
137  avio_skip(pb, 8);
138  bytes_per_minute = avio_rb16(pb);
139  avio_skip(pb, 4);
140  rm_read_metadata(s, pb, 0);
141  if ((startpos + header_size) >= avio_tell(pb) + 2) {
142  // fourcc (should always be "lpcJ")
143  avio_r8(pb);
144  get_str8(pb, buf, sizeof(buf));
145  }
146  // Skip extra header crap (this should never happen)
147  if ((startpos + header_size) > avio_tell(pb))
148  avio_skip(pb, header_size + startpos - avio_tell(pb));
149  if (bytes_per_minute)
150  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
151  st->codecpar->sample_rate = 8000;
152  st->codecpar->channels = 1;
156  ast->deint_id = DEINT_ID_INT0;
157  } else {
159  int codecdata_length;
160  unsigned bytes_per_minute;
161  /* old version (4) */
162  avio_skip(pb, 2); /* unused */
163  avio_rb32(pb); /* .ra4 */
164  avio_rb32(pb); /* data size */
165  avio_rb16(pb); /* version2 */
166  avio_rb32(pb); /* header size */
167  flavor= avio_rb16(pb); /* add codec info / flavor */
168  coded_framesize = avio_rb32(pb); /* coded frame size */
169  if (coded_framesize < 0)
170  return AVERROR_INVALIDDATA;
172 
173  avio_rb32(pb); /* ??? */
174  bytes_per_minute = avio_rb32(pb);
175  if (version == 4) {
176  if (bytes_per_minute)
177  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
178  }
179  avio_rb32(pb); /* ??? */
180  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
181  st->codecpar->block_align= avio_rb16(pb); /* frame size */
182  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
183  avio_rb16(pb); /* ??? */
184  if (version == 5) {
185  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
186  }
187  st->codecpar->sample_rate = avio_rb16(pb);
188  avio_rb32(pb);
189  st->codecpar->channels = avio_rb16(pb);
190  if (version == 5) {
191  ast->deint_id = avio_rl32(pb);
192  avio_read(pb, buf, 4);
193  buf[4] = 0;
194  } else {
195  AV_WL32(buf, 0);
196  get_str8(pb, buf, sizeof(buf)); /* desc */
197  ast->deint_id = AV_RL32(buf);
198  get_str8(pb, buf, sizeof(buf)); /* desc */
199  }
201  st->codecpar->codec_tag = AV_RL32(buf);
203  st->codecpar->codec_tag);
204 
205  switch (st->codecpar->codec_id) {
206  case AV_CODEC_ID_AC3:
208  break;
209  case AV_CODEC_ID_RA_288:
210  st->codecpar->extradata_size= 0;
211  av_freep(&st->codecpar->extradata);
214  break;
215  case AV_CODEC_ID_COOK:
217  case AV_CODEC_ID_ATRAC3:
218  case AV_CODEC_ID_SIPR:
219  if (read_all) {
220  codecdata_length = 0;
221  } else {
222  avio_rb16(pb); avio_r8(pb);
223  if (version == 5)
224  avio_r8(pb);
225  codecdata_length = avio_rb32(pb);
226  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
227  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
228  return -1;
229  }
230  }
231 
233  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
234  if (flavor > 3) {
235  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
236  flavor);
237  return -1;
238  }
239  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
241  } else {
242  if(sub_packet_size <= 0){
243  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
244  return -1;
245  }
247  }
248  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
249  return ret;
250 
251  break;
252  case AV_CODEC_ID_AAC:
253  avio_rb16(pb); avio_r8(pb);
254  if (version == 5)
255  avio_r8(pb);
256  codecdata_length = avio_rb32(pb);
257  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
258  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
259  return -1;
260  }
261  if (codecdata_length >= 1) {
262  avio_r8(pb);
263  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
264  return ret;
265  }
266  break;
267  }
268  switch (ast->deint_id) {
269  case DEINT_ID_INT4:
270  if (ast->coded_framesize > ast->audio_framesize ||
271  sub_packet_h <= 1 ||
272  ast->coded_framesize * (uint64_t)sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
273  return AVERROR_INVALIDDATA;
274  if (ast->coded_framesize * (uint64_t)sub_packet_h != 2*ast->audio_framesize) {
275  avpriv_request_sample(s, "mismatching interleaver parameters");
276  return AVERROR_INVALIDDATA;
277  }
278  break;
279  case DEINT_ID_GENR:
280  if (ast->sub_packet_size <= 0 ||
281  ast->sub_packet_size > ast->audio_framesize)
282  return AVERROR_INVALIDDATA;
283  if (ast->audio_framesize % ast->sub_packet_size)
284  return AVERROR_INVALIDDATA;
285  break;
286  case DEINT_ID_SIPR:
287  case DEINT_ID_INT0:
288  case DEINT_ID_VBRS:
289  case DEINT_ID_VBRF:
290  break;
291  default:
292  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
293  return AVERROR_INVALIDDATA;
294  }
295  if (ast->deint_id == DEINT_ID_INT4 ||
296  ast->deint_id == DEINT_ID_GENR ||
297  ast->deint_id == DEINT_ID_SIPR) {
298  if (st->codecpar->block_align <= 0 ||
299  ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
300  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
301  return AVERROR_INVALIDDATA;
302  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
303  return AVERROR(ENOMEM);
304  }
305 
306  if (read_all) {
307  avio_r8(pb);
308  avio_r8(pb);
309  avio_r8(pb);
310  rm_read_metadata(s, pb, 0);
311  }
312  }
313  return 0;
314 }
315 
317  AVStream *st, RMStream *rst,
318  unsigned int codec_data_size, const uint8_t *mime)
319 {
320  unsigned int v;
321  int size;
322  int64_t codec_pos;
323  int ret;
324 
325  if (codec_data_size > INT_MAX)
326  return AVERROR_INVALIDDATA;
327  if (codec_data_size == 0)
328  return 0;
329 
330  // Duplicate tags
333  return AVERROR_INVALIDDATA;
334 
335  avpriv_set_pts_info(st, 64, 1, 1000);
336  codec_pos = avio_tell(pb);
337  v = avio_rb32(pb);
338 
339  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
340  /* ra type header */
341  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
342  return -1;
343  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
344  avio_seek(pb, -4, SEEK_CUR);
345  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
346  return ret;
347 
351  st->codecpar->codec_tag);
352  } else if(mime && !strcmp(mime, "logical-fileinfo")){
353  int stream_count, rule_count, property_count, i;
354  ff_free_stream(s, st);
355  if (avio_rb16(pb) != 0) {
356  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
357  goto skip;
358  }
359  stream_count = avio_rb16(pb);
360  avio_skip(pb, 6*stream_count);
361  rule_count = avio_rb16(pb);
362  avio_skip(pb, 2*rule_count);
363  property_count = avio_rb16(pb);
364  for(i=0; i<property_count; i++){
365  uint8_t name[128], val[128];
366  avio_rb32(pb);
367  if (avio_rb16(pb) != 0) {
368  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
369  goto skip; //FIXME skip just this one
370  }
371  get_str8(pb, name, sizeof(name));
372  switch(avio_rb32(pb)) {
373  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
374  av_dict_set(&s->metadata, name, val, 0);
375  break;
376  default: avio_skip(pb, avio_rb16(pb));
377  }
378  }
379  } else {
380  int fps;
381  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
382  fail1:
383  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
384  goto skip;
385  }
386  st->codecpar->codec_tag = avio_rl32(pb);
388  st->codecpar->codec_tag);
389  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
390  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
391  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
392  goto fail1;
393  st->codecpar->width = avio_rb16(pb);
394  st->codecpar->height = avio_rb16(pb);
395  avio_skip(pb, 2); // looks like bits per sample
396  avio_skip(pb, 4); // always zero?
399  fps = avio_rb32(pb);
400 
401  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
402  return ret;
403 
404  if (fps > 0) {
406  0x10000, fps, (1 << 30) - 1);
407 #if FF_API_R_FRAME_RATE
408  st->r_frame_rate = st->avg_frame_rate;
409 #endif
410  } else if (s->error_recognition & AV_EF_EXPLODE) {
411  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
412  return AVERROR_INVALIDDATA;
413  }
414  }
415 
416 skip:
417  /* skip codec info */
418  size = avio_tell(pb) - codec_pos;
419  if (codec_data_size >= size) {
420  avio_skip(pb, codec_data_size - size);
421  } else {
422  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
423  }
424 
425  return 0;
426 }
427 
428 /** this function assumes that the demuxer has already seeked to the start
429  * of the INDX chunk, and will bail out if not. */
431 {
432  AVIOContext *pb = s->pb;
433  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
434  AVStream *st;
435 
436  do {
437  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
438  return -1;
439  size = avio_rb32(pb);
440  if (size < 20)
441  return -1;
442  avio_skip(pb, 2);
443  n_pkts = avio_rb32(pb);
444  str_id = avio_rb16(pb);
445  next_off = avio_rb32(pb);
446  for (n = 0; n < s->nb_streams; n++)
447  if (s->streams[n]->id == str_id) {
448  st = s->streams[n];
449  break;
450  }
451  if (n == s->nb_streams) {
452  av_log(s, AV_LOG_ERROR,
453  "Invalid stream index %d for index at pos %"PRId64"\n",
454  str_id, avio_tell(pb));
455  goto skip;
456  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
457  av_log(s, AV_LOG_ERROR,
458  "Nr. of packets in packet index for stream index %d "
459  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
460  str_id, avio_size(pb), avio_tell(pb),
461  (avio_size(pb) - avio_tell(pb)) / 14);
462  goto skip;
463  }
464 
465  for (n = 0; n < n_pkts; n++) {
466  if (avio_feof(pb))
467  return AVERROR_INVALIDDATA;
468  avio_skip(pb, 2);
469  pts = avio_rb32(pb);
470  pos = avio_rb32(pb);
471  avio_skip(pb, 4); /* packet no. */
472 
473  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
474  }
475 
476 skip:
477  if (next_off && avio_tell(pb) < next_off &&
478  avio_seek(pb, next_off, SEEK_SET) < 0) {
479  av_log(s, AV_LOG_ERROR,
480  "Non-linear index detected, not supported\n");
481  return -1;
482  }
483  } while (next_off);
484 
485  return 0;
486 }
487 
489 {
490  RMDemuxContext *rm = s->priv_data;
491  AVStream *st;
492 
493  rm->old_format = 1;
494  st = avformat_new_stream(s, NULL);
495  if (!st)
496  return -1;
498  if (!st->priv_data)
499  return AVERROR(ENOMEM);
500  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
501 }
502 
504  AVStream *st, char *mime)
505 {
506  int number_of_streams = avio_rb16(pb);
507  int number_of_mdpr;
508  int i, ret;
509  unsigned size2;
510  for (i = 0; i<number_of_streams; i++)
511  avio_rb16(pb);
512  number_of_mdpr = avio_rb16(pb);
513  if (number_of_mdpr != 1) {
514  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
515  }
516  for (i = 0; i < number_of_mdpr; i++) {
517  AVStream *st2;
518  if (i > 0) {
519  st2 = avformat_new_stream(s, NULL);
520  if (!st2) {
521  ret = AVERROR(ENOMEM);
522  return ret;
523  }
524  st2->id = st->id + (i<<16);
525  st2->codecpar->bit_rate = st->codecpar->bit_rate;
526  st2->start_time = st->start_time;
527  st2->duration = st->duration;
530  if (!st2->priv_data)
531  return AVERROR(ENOMEM);
532  } else
533  st2 = st;
534 
535  size2 = avio_rb32(pb);
536  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
537  size2, NULL);
538  if (ret < 0)
539  return ret;
540  }
541  return 0;
542 }
543 
545 {
546  RMDemuxContext *rm = s->priv_data;
547  AVStream *st;
548  AVIOContext *pb = s->pb;
549  unsigned int tag;
550  int tag_size;
551  unsigned int start_time, duration;
552  unsigned int data_off = 0, indx_off = 0;
553  char buf[128], mime[128];
554  int flags = 0;
555  int ret;
556  unsigned size, v;
557  int64_t codec_pos;
558 
559  tag = avio_rl32(pb);
560  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
561  /* very old .ra format */
562  return rm_read_header_old(s);
563  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
564  return AVERROR(EIO);
565  }
566 
567  tag_size = avio_rb32(pb);
568  if (tag_size < 0)
569  return AVERROR_INVALIDDATA;
570  avio_skip(pb, tag_size - 8);
571 
572  for(;;) {
573  ret = AVERROR_INVALIDDATA;
574  if (avio_feof(pb))
575  goto fail;
576  tag = avio_rl32(pb);
577  tag_size = avio_rb32(pb);
578  avio_rb16(pb);
579  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
580  av_fourcc2str(tag), tag_size);
581  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
582  goto fail;
583  switch(tag) {
584  case MKTAG('P', 'R', 'O', 'P'):
585  /* file header */
586  avio_rb32(pb); /* max bit rate */
587  avio_rb32(pb); /* avg bit rate */
588  avio_rb32(pb); /* max packet size */
589  avio_rb32(pb); /* avg packet size */
590  avio_rb32(pb); /* nb packets */
591  duration = avio_rb32(pb); /* duration */
592  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
593  avio_rb32(pb); /* preroll */
594  indx_off = avio_rb32(pb); /* index offset */
595  data_off = avio_rb32(pb); /* data offset */
596  avio_rb16(pb); /* nb streams */
597  flags = avio_rb16(pb); /* flags */
598  break;
599  case MKTAG('C', 'O', 'N', 'T'):
600  rm_read_metadata(s, pb, 1);
601  break;
602  case MKTAG('M', 'D', 'P', 'R'):
603  st = avformat_new_stream(s, NULL);
604  if (!st) {
605  ret = AVERROR(ENOMEM);
606  goto fail;
607  }
608  st->id = avio_rb16(pb);
609  avio_rb32(pb); /* max bit rate */
610  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
611  avio_rb32(pb); /* max packet size */
612  avio_rb32(pb); /* avg packet size */
613  start_time = avio_rb32(pb); /* start time */
614  avio_rb32(pb); /* preroll */
615  duration = avio_rb32(pb); /* duration */
616  st->start_time = start_time;
617  st->duration = duration;
618  if(duration>0)
620  get_str8(pb, buf, sizeof(buf)); /* desc */
621  get_str8(pb, mime, sizeof(mime)); /* mimetype */
624  if (!st->priv_data)
625  return AVERROR(ENOMEM);
626 
627  size = avio_rb32(pb);
628  codec_pos = avio_tell(pb);
629 
630  ffio_ensure_seekback(pb, 4);
631  v = avio_rb32(pb);
632  if (v == MKBETAG('M', 'L', 'T', 'I')) {
633  ret = rm_read_multi(s, s->pb, st, mime);
634  if (ret < 0)
635  goto fail;
636  avio_seek(pb, codec_pos + size, SEEK_SET);
637  } else {
638  avio_skip(pb, -4);
639  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
640  size, mime);
641  if (ret < 0)
642  goto fail;
643  }
644 
645  break;
646  case MKTAG('D', 'A', 'T', 'A'):
647  goto header_end;
648  default:
649  /* unknown tag: skip it */
650  avio_skip(pb, tag_size - 10);
651  break;
652  }
653  }
654  header_end:
655  rm->nb_packets = avio_rb32(pb); /* number of packets */
656  if (!rm->nb_packets && (flags & 4))
657  rm->nb_packets = 3600 * 25;
658  avio_rb32(pb); /* next data header */
659 
660  if (!data_off)
661  data_off = avio_tell(pb) - 18;
662  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
663  !(s->flags & AVFMT_FLAG_IGNIDX) &&
664  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
665  rm_read_index(s);
666  avio_seek(pb, data_off + 18, SEEK_SET);
667  }
668 
669  return 0;
670 
671 fail:
672  rm_read_close(s);
673  return ret;
674 }
675 
676 static int get_num(AVIOContext *pb, int *len)
677 {
678  int n, n1;
679 
680  n = avio_rb16(pb);
681  (*len)-=2;
682  n &= 0x7FFF;
683  if (n >= 0x4000) {
684  return n - 0x4000;
685  } else {
686  n1 = avio_rb16(pb);
687  (*len)-=2;
688  return (n << 16) | n1;
689  }
690 }
691 
692 /* multiple of 20 bytes for ra144 (ugly) */
693 #define RAW_PACKET_SIZE 1000
694 
695 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
696  RMDemuxContext *rm = s->priv_data;
697  AVIOContext *pb = s->pb;
698  AVStream *st;
699  uint32_t state=0xFFFFFFFF;
700 
701  while(!avio_feof(pb)){
702  int len, num, i;
703  int mlti_id;
704  *pos= avio_tell(pb) - 3;
705  if(rm->remaining_len > 0){
706  num= rm->current_stream;
707  mlti_id = 0;
708  len= rm->remaining_len;
709  *timestamp = AV_NOPTS_VALUE;
710  *flags= 0;
711  }else{
712  state= (state<<8) + avio_r8(pb);
713 
714  if(state == MKBETAG('I', 'N', 'D', 'X')){
715  int n_pkts;
716  int64_t expected_len;
717  len = avio_rb32(pb);
718  avio_skip(pb, 2);
719  n_pkts = avio_rb32(pb);
720  expected_len = 20 + n_pkts * 14LL;
721 
722  if (len == 20 && expected_len <= INT_MAX)
723  /* some files don't add index entries to chunk size... */
724  len = expected_len;
725  else if (len != expected_len)
727  "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
728  len, n_pkts, expected_len);
729  if(len < 14)
730  continue;
731  len -= 14; // we already read part of the index header
732  goto skip;
733  } else if (state == MKBETAG('D','A','T','A')) {
735  "DATA tag in middle of chunk, file may be broken.\n");
736  }
737 
738  if(state > (unsigned)0xFFFF || state <= 12)
739  continue;
740  len=state - 12;
741  state= 0xFFFFFFFF;
742 
743  num = avio_rb16(pb);
744  *timestamp = avio_rb32(pb);
745  mlti_id = (avio_r8(pb) >> 1) - 1;
746  mlti_id = FFMAX(mlti_id, 0) << 16;
747  *flags = avio_r8(pb); /* flags */
748  }
749  for(i=0;i<s->nb_streams;i++) {
750  st = s->streams[i];
751  if (mlti_id + num == st->id)
752  break;
753  }
754  if (i == s->nb_streams) {
755 skip:
756  /* skip packet if unknown number */
757  avio_skip(pb, len);
758  rm->remaining_len = 0;
759  continue;
760  }
761  *stream_index= i;
762 
763  return len;
764  }
765  return -1;
766 }
767 
769  RMDemuxContext *rm, RMStream *vst,
770  AVPacket *pkt, int len, int *pseq,
771  int64_t *timestamp)
772 {
773  int hdr;
774  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
775  int type;
776  int ret;
777 
778  hdr = avio_r8(pb); len--;
779  type = hdr >> 6;
780 
781  if(type != 3){ // not frame as a part of packet
782  seq = avio_r8(pb); len--;
783  }
784  if(type != 1){ // not whole frame
785  len2 = get_num(pb, &len);
786  pos = get_num(pb, &len);
787  pic_num = avio_r8(pb); len--;
788  }
789  if(len<0) {
790  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
791  return -1;
792  }
793  rm->remaining_len = len;
794  if(type&1){ // frame, not slice
795  if(type == 3){ // frame as a part of packet
796  len= len2;
797  *timestamp = pos;
798  }
799  if(rm->remaining_len < len) {
800  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
801  return -1;
802  }
803  rm->remaining_len -= len;
804  if ((ret = av_new_packet(pkt, len + 9)) < 0)
805  return ret;
806  pkt->data[0] = 0;
807  AV_WL32(pkt->data + 1, 1);
808  AV_WL32(pkt->data + 5, 0);
809  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
810  av_packet_unref(pkt);
811  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
812  return ret < 0 ? ret : AVERROR(EIO);
813  }
814  return 0;
815  }
816  //now we have to deal with single slice
817 
818  *pseq = seq;
819  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
820  if (len2 > ffio_limit(pb, len2)) {
821  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
822  return AVERROR_INVALIDDATA;
823  }
824  vst->slices = ((hdr & 0x3F) << 1) + 1;
825  vst->videobufsize = len2 + 8*vst->slices + 1;
826  av_packet_unref(&vst->pkt); //FIXME this should be output.
827  if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
828  return ret;
829  memset(vst->pkt.data, 0, vst->pkt.size);
830  vst->videobufpos = 8*vst->slices + 1;
831  vst->cur_slice = 0;
832  vst->curpic_num = pic_num;
833  vst->pktpos = avio_tell(pb);
834  }
835  if(type == 2)
836  len = FFMIN(len, pos);
837 
838  if(++vst->cur_slice > vst->slices) {
839  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
840  return 1;
841  }
842  if(!vst->pkt.data)
843  return AVERROR(ENOMEM);
844  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
845  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
846  if(vst->videobufpos + len > vst->videobufsize) {
847  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
848  return 1;
849  }
850  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
851  return AVERROR(EIO);
852  vst->videobufpos += len;
853  rm->remaining_len-= len;
854 
855  if (type == 2 || vst->videobufpos == vst->videobufsize) {
856  vst->pkt.data[0] = vst->cur_slice-1;
857  av_packet_move_ref(pkt, &vst->pkt);
858  if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
859  memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
860  vst->videobufpos - 1 - 8*vst->slices);
861  pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
862  pkt->pts = AV_NOPTS_VALUE;
863  pkt->pos = vst->pktpos;
864  vst->slices = 0;
865  return 0;
866  }
867 
868  return 1;
869 }
870 
871 static inline void
873 {
874  uint8_t *ptr;
875  int j;
876 
877  if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
878  ptr = pkt->data;
879  for (j=0;j<pkt->size;j+=2) {
880  FFSWAP(int, ptr[0], ptr[1]);
881  ptr += 2;
882  }
883  }
884 }
885 
886 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
887  int ret = avio_read(pb, dst, n);
888  if (ret != n) {
889  if (ret >= 0) memset(dst + ret, 0, n - ret);
890  else memset(dst , 0, n);
891  av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
892  }
893  return ret;
894 }
895 
896 int
898  AVStream *st, RMStream *ast, int len, AVPacket *pkt,
899  int *seq, int flags, int64_t timestamp)
900 {
901  RMDemuxContext *rm = s->priv_data;
902  int ret;
903 
904  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
905  rm->current_stream= st->id;
906  ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
907  if(ret)
908  return ret < 0 ? ret : -1; //got partial frame or error
909  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
910  if ((ast->deint_id == DEINT_ID_GENR) ||
911  (ast->deint_id == DEINT_ID_INT4) ||
912  (ast->deint_id == DEINT_ID_SIPR)) {
913  int x;
914  int sps = ast->sub_packet_size;
915  int cfs = ast->coded_framesize;
916  int h = ast->sub_packet_h;
917  int y = ast->sub_packet_cnt;
918  int w = ast->audio_framesize;
919 
920  if (flags & 2)
921  y = ast->sub_packet_cnt = 0;
922  if (!y)
923  ast->audiotimestamp = timestamp;
924 
925  switch (ast->deint_id) {
926  case DEINT_ID_INT4:
927  for (x = 0; x < h/2; x++)
928  readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
929  break;
930  case DEINT_ID_GENR:
931  for (x = 0; x < w/sps; x++)
932  readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
933  break;
934  case DEINT_ID_SIPR:
935  readfull(s, pb, ast->pkt.data + y * w, w);
936  break;
937  }
938 
939  if (++(ast->sub_packet_cnt) < h)
940  return -1;
941  if (ast->deint_id == DEINT_ID_SIPR)
942  ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
943 
944  ast->sub_packet_cnt = 0;
945  rm->audio_stream_num = st->index;
946  if (st->codecpar->block_align <= 0) {
947  av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
948  return AVERROR_INVALIDDATA;
949  }
950  rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
951  } else if ((ast->deint_id == DEINT_ID_VBRF) ||
952  (ast->deint_id == DEINT_ID_VBRS)) {
953  int x;
954  rm->audio_stream_num = st->index;
955  ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
956  if (ast->sub_packet_cnt) {
957  for (x = 0; x < ast->sub_packet_cnt; x++)
958  ast->sub_packet_lengths[x] = avio_rb16(pb);
959  rm->audio_pkt_cnt = ast->sub_packet_cnt;
960  ast->audiotimestamp = timestamp;
961  } else
962  return -1;
963  } else {
964  ret = av_get_packet(pb, pkt, len);
965  if (ret < 0)
966  return ret;
967  rm_ac3_swap_bytes(st, pkt);
968  }
969  } else {
970  ret = av_get_packet(pb, pkt, len);
971  if (ret < 0)
972  return ret;
973  }
974 
975  pkt->stream_index = st->index;
976 
977  pkt->pts = timestamp;
978  if (flags & 2)
979  pkt->flags |= AV_PKT_FLAG_KEY;
980 
981  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
982 }
983 
984 int
986  AVStream *st, RMStream *ast, AVPacket *pkt)
987 {
988  RMDemuxContext *rm = s->priv_data;
989  int ret;
990 
991  av_assert0 (rm->audio_pkt_cnt > 0);
992 
993  if (ast->deint_id == DEINT_ID_VBRF ||
994  ast->deint_id == DEINT_ID_VBRS) {
995  ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
996  if (ret < 0)
997  return ret;
998  } else {
999  ret = av_new_packet(pkt, st->codecpar->block_align);
1000  if (ret < 0)
1001  return ret;
1002  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
1003  (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1004  st->codecpar->block_align);
1005  }
1006  rm->audio_pkt_cnt--;
1007  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1009  pkt->flags = AV_PKT_FLAG_KEY;
1010  } else
1011  pkt->flags = 0;
1012  pkt->stream_index = st->index;
1013 
1014  return rm->audio_pkt_cnt;
1015 }
1016 
1018 {
1019  RMDemuxContext *rm = s->priv_data;
1020  AVStream *st = NULL; // init to silence compiler warning
1021  int i, res, seq = 1;
1022  int64_t timestamp, pos, len;
1023  int flags;
1024 
1025  for (;;) {
1026  if (rm->audio_pkt_cnt) {
1027  // If there are queued audio packet return them first
1028  st = s->streams[rm->audio_stream_num];
1029  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1030  if(res < 0)
1031  return res;
1032  flags = 0;
1033  } else {
1034  if (rm->old_format) {
1035  RMStream *ast;
1036 
1037  st = s->streams[0];
1038  ast = st->priv_data;
1039  timestamp = AV_NOPTS_VALUE;
1040  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1041  ast->coded_framesize * (int64_t)ast->sub_packet_h / 2;
1042  if (len > INT_MAX)
1043  return AVERROR_INVALIDDATA;
1044  flags = (seq++ == 1) ? 2 : 0;
1045  pos = avio_tell(s->pb);
1046  } else {
1047  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1048  if (len > 0)
1049  st = s->streams[i];
1050  }
1051 
1052  if (avio_feof(s->pb))
1053  return AVERROR_EOF;
1054  if (len <= 0)
1055  return AVERROR(EIO);
1056 
1057  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1058  &seq, flags, timestamp);
1059  if (res < -1)
1060  return res;
1061  if((flags&2) && (seq&0x7F) == 1)
1062  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1063  if (res)
1064  continue;
1065  }
1066 
1067  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1068  || st->discard >= AVDISCARD_ALL){
1069  av_packet_unref(pkt);
1070  } else
1071  break;
1072  }
1073 
1074  return 0;
1075 }
1076 
1078 {
1079  int i;
1080 
1081  for (i=0;i<s->nb_streams;i++)
1083 
1084  return 0;
1085 }
1086 
1087 static int rm_probe(const AVProbeData *p)
1088 {
1089  /* check file header */
1090  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1091  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1092  p->buf[4] == 0 && p->buf[5] == 0) ||
1093  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1094  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1095  return AVPROBE_SCORE_MAX;
1096  else
1097  return 0;
1098 }
1099 
1100 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1101  int64_t *ppos, int64_t pos_limit)
1102 {
1103  RMDemuxContext *rm = s->priv_data;
1104  int64_t pos, dts;
1105  int stream_index2, flags, len, h;
1106 
1107  pos = *ppos;
1108 
1109  if(rm->old_format)
1110  return AV_NOPTS_VALUE;
1111 
1112  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1113  return AV_NOPTS_VALUE;
1114 
1115  rm->remaining_len=0;
1116  for(;;){
1117  int seq=1;
1118  AVStream *st;
1119 
1120  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1121  if(len<0)
1122  return AV_NOPTS_VALUE;
1123 
1124  st = s->streams[stream_index2];
1125  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1126  h= avio_r8(s->pb); len--;
1127  if(!(h & 0x40)){
1128  seq = avio_r8(s->pb); len--;
1129  }
1130  }
1131 
1132  if((flags&2) && (seq&0x7F) == 1){
1133  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1134  flags, stream_index2, stream_index, dts, seq);
1135  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1136  if(stream_index2 == stream_index)
1137  break;
1138  }
1139 
1140  avio_skip(s->pb, len);
1141  }
1142  *ppos = pos;
1143  return dts;
1144 }
1145 
1146 static int rm_read_seek(AVFormatContext *s, int stream_index,
1147  int64_t pts, int flags)
1148 {
1149  RMDemuxContext *rm = s->priv_data;
1150 
1151  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1152  return -1;
1153  rm->audio_pkt_cnt = 0;
1154  return 0;
1155 }
1156 
1157 
1159  .name = "rm",
1160  .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1161  .priv_data_size = sizeof(RMDemuxContext),
1162  .read_probe = rm_probe,
1166  .read_timestamp = rm_read_dts,
1168 };
1169 
1171  .name = "rdt",
1172  .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1173  .priv_data_size = sizeof(RMDemuxContext),
1175  .flags = AVFMT_NOFILE,
1176 };
1177 
1178 static int ivr_probe(const AVProbeData *p)
1179 {
1180  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1181  memcmp(p->buf, ".REC", 4))
1182  return 0;
1183 
1184  return AVPROBE_SCORE_MAX;
1185 }
1186 
1188 {
1189  unsigned tag, type, len, tlen, value;
1190  int i, j, n, count, nb_streams = 0, ret;
1191  uint8_t key[256], val[256];
1192  AVIOContext *pb = s->pb;
1193  AVStream *st;
1194  int64_t pos, offset=0, temp;
1195 
1196  pos = avio_tell(pb);
1197  tag = avio_rl32(pb);
1198  if (tag == MKTAG('.','R','1','M')) {
1199  if (avio_rb16(pb) != 1)
1200  return AVERROR_INVALIDDATA;
1201  if (avio_r8(pb) != 1)
1202  return AVERROR_INVALIDDATA;
1203  len = avio_rb32(pb);
1204  avio_skip(pb, len);
1205  avio_skip(pb, 5);
1206  temp = avio_rb64(pb);
1207  while (!avio_feof(pb) && temp) {
1208  offset = temp;
1209  temp = avio_rb64(pb);
1210  }
1211  if (offset <= 0)
1212  return AVERROR_INVALIDDATA;
1213  avio_skip(pb, offset - avio_tell(pb));
1214  if (avio_r8(pb) != 1)
1215  return AVERROR_INVALIDDATA;
1216  len = avio_rb32(pb);
1217  avio_skip(pb, len);
1218  if (avio_r8(pb) != 2)
1219  return AVERROR_INVALIDDATA;
1220  avio_skip(pb, 16);
1221  pos = avio_tell(pb);
1222  tag = avio_rl32(pb);
1223  }
1224 
1225  if (tag != MKTAG('.','R','E','C'))
1226  return AVERROR_INVALIDDATA;
1227 
1228  if (avio_r8(pb) != 0)
1229  return AVERROR_INVALIDDATA;
1230  count = avio_rb32(pb);
1231  for (i = 0; i < count; i++) {
1232  if (avio_feof(pb))
1233  return AVERROR_INVALIDDATA;
1234 
1235  type = avio_r8(pb);
1236  tlen = avio_rb32(pb);
1237  avio_get_str(pb, tlen, key, sizeof(key));
1238  len = avio_rb32(pb);
1239  if (type == 5) {
1240  avio_get_str(pb, len, val, sizeof(val));
1241  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1242  } else if (type == 4) {
1243  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1244  for (j = 0; j < len; j++) {
1245  if (avio_feof(pb))
1246  return AVERROR_INVALIDDATA;
1247  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1248  }
1249  av_log(s, AV_LOG_DEBUG, "'\n");
1250  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1251  nb_streams = value = avio_rb32(pb);
1252  } else if (len == 4 && type == 3) {
1253  value = avio_rb32(pb);
1254  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1255  } else {
1256  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1257  avio_skip(pb, len);
1258  }
1259  }
1260 
1261  for (n = 0; n < nb_streams; n++) {
1262  st = avformat_new_stream(s, NULL);
1263  if (!st)
1264  return AVERROR(ENOMEM);
1266  if (!st->priv_data)
1267  return AVERROR(ENOMEM);
1268 
1269  if (avio_r8(pb) != 1)
1270  return AVERROR_INVALIDDATA;
1271 
1272  count = avio_rb32(pb);
1273  for (i = 0; i < count; i++) {
1274  if (avio_feof(pb))
1275  return AVERROR_INVALIDDATA;
1276 
1277  type = avio_r8(pb);
1278  tlen = avio_rb32(pb);
1279  avio_get_str(pb, tlen, key, sizeof(key));
1280  len = avio_rb32(pb);
1281  if (type == 5) {
1282  avio_get_str(pb, len, val, sizeof(val));
1283  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1284  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1285  ret = ffio_ensure_seekback(pb, 4);
1286  if (ret < 0)
1287  return ret;
1288  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1289  ret = rm_read_multi(s, pb, st, NULL);
1290  } else {
1291  if (avio_feof(pb))
1292  return AVERROR_INVALIDDATA;
1293  avio_seek(pb, -4, SEEK_CUR);
1294  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1295  }
1296 
1297  if (ret < 0)
1298  return ret;
1299  } else if (type == 4) {
1300  int j;
1301 
1302  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1303  for (j = 0; j < len; j++) {
1304  if (avio_feof(pb))
1305  return AVERROR_INVALIDDATA;
1306  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1307  }
1308  av_log(s, AV_LOG_DEBUG, "'\n");
1309  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1310  st->duration = avio_rb32(pb);
1311  } else if (len == 4 && type == 3) {
1312  value = avio_rb32(pb);
1313  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1314  } else {
1315  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1316  avio_skip(pb, len);
1317  }
1318  }
1319  }
1320 
1321  if (avio_r8(pb) != 6)
1322  return AVERROR_INVALIDDATA;
1323  avio_skip(pb, 12);
1324  avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1325  if (avio_r8(pb) != 8)
1326  return AVERROR_INVALIDDATA;
1327  avio_skip(pb, 8);
1328 
1329  return 0;
1330 }
1331 
1333 {
1334  RMDemuxContext *rm = s->priv_data;
1335  int ret = AVERROR_EOF, opcode;
1336  AVIOContext *pb = s->pb;
1337  unsigned size, index;
1338  int64_t pos, pts;
1339 
1340  if (avio_feof(pb) || rm->data_end)
1341  return AVERROR_EOF;
1342 
1343  pos = avio_tell(pb);
1344 
1345  for (;;) {
1346  if (rm->audio_pkt_cnt) {
1347  // If there are queued audio packet return them first
1348  AVStream *st;
1349 
1350  st = s->streams[rm->audio_stream_num];
1351  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1352  if (ret < 0) {
1353  return ret;
1354  }
1355  } else {
1356  if (rm->remaining_len) {
1357  avio_skip(pb, rm->remaining_len);
1358  rm->remaining_len = 0;
1359  }
1360 
1361  if (avio_feof(pb))
1362  return AVERROR_EOF;
1363 
1364  opcode = avio_r8(pb);
1365  if (opcode == 2) {
1366  AVStream *st;
1367  int seq = 1;
1368 
1369  pts = avio_rb32(pb);
1370  index = avio_rb16(pb);
1371  if (index >= s->nb_streams)
1372  return AVERROR_INVALIDDATA;
1373 
1374  avio_skip(pb, 4);
1375  size = avio_rb32(pb);
1376  avio_skip(pb, 4);
1377 
1378  if (size < 1 || size > INT_MAX/4) {
1379  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1380  return AVERROR_INVALIDDATA;
1381  }
1382 
1383  st = s->streams[index];
1384  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1385  &seq, 0, pts);
1386  if (ret < -1) {
1387  return ret;
1388  } else if (ret) {
1389  continue;
1390  }
1391 
1392  pkt->pos = pos;
1393  pkt->pts = pts;
1394  pkt->stream_index = index;
1395  } else if (opcode == 7) {
1396  pos = avio_rb64(pb);
1397  if (!pos) {
1398  rm->data_end = 1;
1399  return AVERROR_EOF;
1400  }
1401  } else {
1402  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1403  return AVERROR(EIO);
1404  }
1405  }
1406 
1407  break;
1408  }
1409 
1410  return ret;
1411 }
1412 
1414  .name = "ivr",
1415  .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1416  .priv_data_size = sizeof(RMDemuxContext),
1417  .read_probe = ivr_probe,
1421  .extensions = "ivr",
1422 };
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1332
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:676
#define NULL
Definition: coverity.c:32
full parsing and interpolation of timestamps for frames not starting on a packet boundary ...
Definition: avformat.h:797
#define RAW_PACKET_SIZE
Definition: rmdec.c:693
int remaining_len
Definition: rmdec.c:63
discard all frames except keyframes
Definition: avcodec.h:235
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:334
version
Definition: libkvazaar.c:292
static struct @314 state
static int rm_read_multi(AVFormatContext *s, AVIOContext *pb, AVStream *st, char *mime)
Definition: rmdec.c:503
int size
#define DEINT_ID_INT0
no interleaving needed
Definition: rmdec.c:37
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:2052
static void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
Definition: rmdec.c:71
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3165
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1100
const unsigned char ff_sipr_subpk_size[4]
Definition: rmsipr.c:25
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
else temp
Definition: vf_mcdeint.c:256
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:4948
#define avpriv_request_sample(...)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:877
int size
Definition: packet.h:356
Definition: rmdec.c:43
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
static int rm_probe(const AVProbeData *p)
Definition: rmdec.c:1087
int cur_slice
Definition: rmdec.c:48
void * priv_data
Definition: avformat.h:891
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
const char * key
static int rm_read_header(AVFormatContext *s)
Definition: rmdec.c:544
discard all
Definition: avcodec.h:236
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:763
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
#define DEINT_ID_VBRS
VBR case for AAC.
Definition: rmdec.c:41
int videobufpos
position for the next slice in the video buffer
Definition: rmdec.c:46
Format I/O context.
Definition: avformat.h:1351
int audio_stream_num
Stream number for audio packets.
Definition: rmdec.c:64
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define AVFMT_FLAG_IGNIDX
Ignore index.
Definition: avformat.h:1484
Public dictionary API.
int ffio_limit(AVIOContext *s, int size)
Definition: utils.c:243
static int64_t start_time
Definition: ffplay.c:332
uint8_t
static int nb_streams
Definition: ffprobe.c:282
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: codec_par.h:126
static int ivr_probe(const AVProbeData *p)
Definition: rmdec.c:1178
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:778
int id
Format-specific stream ID.
Definition: avformat.h:883
enum AVStreamParseType need_parsing
Definition: avformat.h:1094
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4526
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int64_t duration
Definition: movenc.c:63
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
uint8_t * data
Definition: packet.h:355
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:663
uint32_t tag
Definition: movenc.c:1532
#define AVERROR_EOF
End of file.
Definition: error.h:55
int curpic_num
picture number of current frame
Definition: rmdec.c:47
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
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:307
static int rm_read_index(AVFormatContext *s)
this function assumes that the demuxer has already seeked to the start of the INDX chunk...
Definition: rmdec.c:430
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:899
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define DEINT_ID_GENR
interleaving for Cooker/ATRAC
Definition: rmdec.c:36
static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb, RMDemuxContext *rm, RMStream *vst, AVPacket *pkt, int len, int *pseq, int64_t *timestamp)
Definition: rmdec.c:768
static void get_str8(AVIOContext *pb, char *buf, int buf_size)
Definition: rmdec.c:79
full parsing and repack with timestamp and position generation by parser for raw this assumes that ea...
Definition: avformat.h:799
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:625
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:88
#define AVINDEX_KEYFRAME
Definition: avformat.h:812
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#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
static int rm_read_close(AVFormatContext *s)
Definition: rmdec.c:1077
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:747
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
unsigned int pos
Definition: spdifenc.c:412
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
simple assert() macros that are a bit more flexible than ISO C assert().
#define DEINT_ID_VBRF
VBR case for AAC.
Definition: rmdec.c:40
static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos)
Definition: rmdec.c:695
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
int64_t pktpos
first slice position in file
Definition: rmdec.c:49
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:949
#define FFMAX(a, b)
Definition: common.h:94
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:107
#define fail()
Definition: checkasm.h:123
int data_end
Definition: rmdec.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
Only parse headers, do not repack.
Definition: avformat.h:796
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:616
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
AVPacket pkt
place to store merged video frame / reordered audio data
Definition: rmdec.c:44
int block_align
Audio only.
Definition: codec_par.h:177
const char * name
Definition: qsvenc.c:46
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
audio channel layout utility functions
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
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n)
Definition: rmdec.c:886
#define FFMIN(a, b)
Definition: common.h:96
void ff_free_stream(AVFormatContext *s, AVStream *st)
Definition: utils.c:4447
uint8_t w
Definition: llviddspenc.c:38
AVInputFormat ff_rm_demuxer
Definition: rmdec.c:1158
int32_t
#define DEINT_ID_INT4
interleaving for 28.8
Definition: rmdec.c:38
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_RL32
Definition: intreadwrite.h:146
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1666
AVInputFormat ff_ivr_demuxer
Definition: rmdec.c:1413
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: rmdec.c:1146
int sub_packet_cnt
Definition: rmdec.c:52
#define FF_ARRAY_ELEMS(a)
int coded_framesize
Descrambling parameters from container.
Definition: rmdec.c:53
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:545
int audio_framesize
Definition: rmdec.c:54
Stream structure.
Definition: avformat.h:876
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
static void rm_ac3_swap_bytes(AVStream *st, AVPacket *pkt)
Definition: rmdec.c:872
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
const AVCodecTag ff_rm_codec_tags[]
Definition: rm.c:31
static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size)
Definition: rmdec.c:84
#define DEINT_ID_SIPR
interleaving for Sipro
Definition: rmdec.c:39
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:605
int ff_rm_parse_packet(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int len, AVPacket *pkt, int *seq, int flags, int64_t timestamp)
Parse one rm-stream packet from the input bytestream.
Definition: rmdec.c:897
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
double value
Definition: eval.c:98
int index
Definition: gxfenc.c:89
int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *rst, unsigned int codec_data_size, const uint8_t *mime)
Read the MDPR chunk, which contains stream-specific codec initialization parameters.
Definition: rmdec.c:316
int current_stream
Definition: rmdec.c:62
cl_device_type type
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
int old_format
Definition: rmdec.c:61
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
int audio_pkt_cnt
Output packet counter.
Definition: rmdec.c:65
int nb_packets
Definition: rmdec.c:60
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:565
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AVInputFormat ff_rdt_demuxer
Definition: rmdec.c:1170
void ff_rm_free_rmstream(RMStream *rms)
Definition: rmdec.c:116
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
int sub_packet_h
Definition: rmdec.c:53
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
Definition: aviobuf.c:982
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:925
int sample_rate
Audio only.
Definition: codec_par.h:170
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
full parsing and repack
Definition: avformat.h:795
void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize)
Perform 4-bit block reordering for SIPR data.
Definition: rmsipr.c:41
Main libavformat public API header.
int32_t deint_id
Length of each subpacket.
Definition: rmdec.c:56
if(ret< 0)
Definition: vf_mcdeint.c:279
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:915
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
Definition: avformat.h:1618
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:3346
int ff_rm_retrieve_cache(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, AVPacket *pkt)
Retrieve one cached packet from the rm-context.
Definition: rmdec.c:985
int den
Denominator.
Definition: rational.h:60
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:488
#define MKBETAG(a, b, c, d)
Definition: common.h:407
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:215
int slices
Definition: rmdec.c:48
int len
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1017
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all)
Definition: rmdec.c:124
void * priv_data
Format private data.
Definition: avformat.h:1379
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
int channels
Audio only.
Definition: codec_par.h:166
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1466
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:650
int64_t audiotimestamp
Audio descrambling matrix parameters.
Definition: rmdec.c:51
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:857
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:356
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: packet.h:357
int videobufsize
current assembled frame size
Definition: rmdec.c:45
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:406
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:931
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1000
int sub_packet_lengths[16]
Audio frame size from container.
Definition: rmdec.c:55
static double val(void *priv, double ch)
Definition: aeval.c:76
This structure stores compressed data.
Definition: packet.h:332
static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
Definition: rmdec.c:93
static int ivr_read_header(AVFormatContext *s)
Definition: rmdec.c:1187
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
#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:2184
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:426