FFmpeg  4.3
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  av_packet_unref(&rms->pkt);
119 }
120 
122  AVStream *st, RMStream *ast, int read_all)
123 {
124  char buf[256];
125  uint32_t version;
126  int ret;
127 
128  /* ra type header */
129  version = avio_rb16(pb); /* version */
130  if (version == 3) {
131  unsigned bytes_per_minute;
132  int header_size = avio_rb16(pb);
133  int64_t startpos = avio_tell(pb);
134  avio_skip(pb, 8);
135  bytes_per_minute = avio_rb16(pb);
136  avio_skip(pb, 4);
137  rm_read_metadata(s, pb, 0);
138  if ((startpos + header_size) >= avio_tell(pb) + 2) {
139  // fourcc (should always be "lpcJ")
140  avio_r8(pb);
141  get_str8(pb, buf, sizeof(buf));
142  }
143  // Skip extra header crap (this should never happen)
144  if ((startpos + header_size) > avio_tell(pb))
145  avio_skip(pb, header_size + startpos - avio_tell(pb));
146  if (bytes_per_minute)
147  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
148  st->codecpar->sample_rate = 8000;
149  st->codecpar->channels = 1;
153  ast->deint_id = DEINT_ID_INT0;
154  } else {
156  int codecdata_length;
157  unsigned bytes_per_minute;
158  /* old version (4) */
159  avio_skip(pb, 2); /* unused */
160  avio_rb32(pb); /* .ra4 */
161  avio_rb32(pb); /* data size */
162  avio_rb16(pb); /* version2 */
163  avio_rb32(pb); /* header size */
164  flavor= avio_rb16(pb); /* add codec info / flavor */
165  ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
166  avio_rb32(pb); /* ??? */
167  bytes_per_minute = avio_rb32(pb);
168  if (version == 4) {
169  if (bytes_per_minute)
170  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
171  }
172  avio_rb32(pb); /* ??? */
173  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
174  st->codecpar->block_align= avio_rb16(pb); /* frame size */
175  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
176  avio_rb16(pb); /* ??? */
177  if (version == 5) {
178  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
179  }
180  st->codecpar->sample_rate = avio_rb16(pb);
181  avio_rb32(pb);
182  st->codecpar->channels = avio_rb16(pb);
183  if (version == 5) {
184  ast->deint_id = avio_rl32(pb);
185  avio_read(pb, buf, 4);
186  buf[4] = 0;
187  } else {
188  AV_WL32(buf, 0);
189  get_str8(pb, buf, sizeof(buf)); /* desc */
190  ast->deint_id = AV_RL32(buf);
191  get_str8(pb, buf, sizeof(buf)); /* desc */
192  }
194  st->codecpar->codec_tag = AV_RL32(buf);
196  st->codecpar->codec_tag);
197 
198  switch (st->codecpar->codec_id) {
199  case AV_CODEC_ID_AC3:
201  break;
202  case AV_CODEC_ID_RA_288:
203  st->codecpar->extradata_size= 0;
204  av_freep(&st->codecpar->extradata);
207  break;
208  case AV_CODEC_ID_COOK:
210  case AV_CODEC_ID_ATRAC3:
211  case AV_CODEC_ID_SIPR:
212  if (read_all) {
213  codecdata_length = 0;
214  } else {
215  avio_rb16(pb); avio_r8(pb);
216  if (version == 5)
217  avio_r8(pb);
218  codecdata_length = avio_rb32(pb);
219  if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
220  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
221  return -1;
222  }
223  }
224 
226  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
227  if (flavor > 3) {
228  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
229  flavor);
230  return -1;
231  }
232  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
234  } else {
235  if(sub_packet_size <= 0){
236  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
237  return -1;
238  }
240  }
241  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
242  return ret;
243 
244  break;
245  case AV_CODEC_ID_AAC:
246  avio_rb16(pb); avio_r8(pb);
247  if (version == 5)
248  avio_r8(pb);
249  codecdata_length = avio_rb32(pb);
250  if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
251  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
252  return -1;
253  }
254  if (codecdata_length >= 1) {
255  avio_r8(pb);
256  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
257  return ret;
258  }
259  break;
260  }
261  switch (ast->deint_id) {
262  case DEINT_ID_INT4:
263  if (ast->coded_framesize > ast->audio_framesize ||
264  sub_packet_h <= 1 ||
265  ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
266  return AVERROR_INVALIDDATA;
267  if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
268  avpriv_request_sample(s, "mismatching interleaver parameters");
269  return AVERROR_INVALIDDATA;
270  }
271  break;
272  case DEINT_ID_GENR:
273  if (ast->sub_packet_size <= 0 ||
274  ast->sub_packet_size > ast->audio_framesize)
275  return AVERROR_INVALIDDATA;
276  if (ast->audio_framesize % ast->sub_packet_size)
277  return AVERROR_INVALIDDATA;
278  break;
279  case DEINT_ID_SIPR:
280  case DEINT_ID_INT0:
281  case DEINT_ID_VBRS:
282  case DEINT_ID_VBRF:
283  break;
284  default:
285  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
286  return AVERROR_INVALIDDATA;
287  }
288  if (ast->deint_id == DEINT_ID_INT4 ||
289  ast->deint_id == DEINT_ID_GENR ||
290  ast->deint_id == DEINT_ID_SIPR) {
291  if (st->codecpar->block_align <= 0 ||
292  ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
293  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
294  return AVERROR_INVALIDDATA;
295  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
296  return AVERROR(ENOMEM);
297  }
298 
299  if (read_all) {
300  avio_r8(pb);
301  avio_r8(pb);
302  avio_r8(pb);
303  rm_read_metadata(s, pb, 0);
304  }
305  }
306  return 0;
307 }
308 
310  AVStream *st, RMStream *rst,
311  unsigned int codec_data_size, const uint8_t *mime)
312 {
313  unsigned int v;
314  int size;
315  int64_t codec_pos;
316  int ret;
317 
318  if (codec_data_size > INT_MAX)
319  return AVERROR_INVALIDDATA;
320  if (codec_data_size == 0)
321  return 0;
322 
323  avpriv_set_pts_info(st, 64, 1, 1000);
324  codec_pos = avio_tell(pb);
325  v = avio_rb32(pb);
326 
327  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
328  /* ra type header */
329  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
330  return -1;
331  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
332  avio_seek(pb, -4, SEEK_CUR);
333  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
334  return ret;
335 
339  st->codecpar->codec_tag);
340  } else if(mime && !strcmp(mime, "logical-fileinfo")){
341  int stream_count, rule_count, property_count, i;
342  ff_free_stream(s, st);
343  if (avio_rb16(pb) != 0) {
344  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
345  goto skip;
346  }
347  stream_count = avio_rb16(pb);
348  avio_skip(pb, 6*stream_count);
349  rule_count = avio_rb16(pb);
350  avio_skip(pb, 2*rule_count);
351  property_count = avio_rb16(pb);
352  for(i=0; i<property_count; i++){
353  uint8_t name[128], val[128];
354  avio_rb32(pb);
355  if (avio_rb16(pb) != 0) {
356  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
357  goto skip; //FIXME skip just this one
358  }
359  get_str8(pb, name, sizeof(name));
360  switch(avio_rb32(pb)) {
361  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
362  av_dict_set(&s->metadata, name, val, 0);
363  break;
364  default: avio_skip(pb, avio_rb16(pb));
365  }
366  }
367  } else {
368  int fps;
369  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
370  fail1:
371  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
372  goto skip;
373  }
374  st->codecpar->codec_tag = avio_rl32(pb);
376  st->codecpar->codec_tag);
377  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
378  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
379  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
380  goto fail1;
381  st->codecpar->width = avio_rb16(pb);
382  st->codecpar->height = avio_rb16(pb);
383  avio_skip(pb, 2); // looks like bits per sample
384  avio_skip(pb, 4); // always zero?
387  fps = avio_rb32(pb);
388 
389  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
390  return ret;
391 
392  if (fps > 0) {
394  0x10000, fps, (1 << 30) - 1);
395 #if FF_API_R_FRAME_RATE
396  st->r_frame_rate = st->avg_frame_rate;
397 #endif
398  } else if (s->error_recognition & AV_EF_EXPLODE) {
399  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
400  return AVERROR_INVALIDDATA;
401  }
402  }
403 
404 skip:
405  /* skip codec info */
406  size = avio_tell(pb) - codec_pos;
407  if (codec_data_size >= size) {
408  avio_skip(pb, codec_data_size - size);
409  } else {
410  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
411  }
412 
413  return 0;
414 }
415 
416 /** this function assumes that the demuxer has already seeked to the start
417  * of the INDX chunk, and will bail out if not. */
419 {
420  AVIOContext *pb = s->pb;
421  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
422  AVStream *st;
423 
424  do {
425  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
426  return -1;
427  size = avio_rb32(pb);
428  if (size < 20)
429  return -1;
430  avio_skip(pb, 2);
431  n_pkts = avio_rb32(pb);
432  str_id = avio_rb16(pb);
433  next_off = avio_rb32(pb);
434  for (n = 0; n < s->nb_streams; n++)
435  if (s->streams[n]->id == str_id) {
436  st = s->streams[n];
437  break;
438  }
439  if (n == s->nb_streams) {
440  av_log(s, AV_LOG_ERROR,
441  "Invalid stream index %d for index at pos %"PRId64"\n",
442  str_id, avio_tell(pb));
443  goto skip;
444  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
445  av_log(s, AV_LOG_ERROR,
446  "Nr. of packets in packet index for stream index %d "
447  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
448  str_id, avio_size(pb), avio_tell(pb),
449  (avio_size(pb) - avio_tell(pb)) / 14);
450  goto skip;
451  }
452 
453  for (n = 0; n < n_pkts; n++) {
454  avio_skip(pb, 2);
455  pts = avio_rb32(pb);
456  pos = avio_rb32(pb);
457  avio_skip(pb, 4); /* packet no. */
458 
459  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
460  }
461 
462 skip:
463  if (next_off && avio_tell(pb) < next_off &&
464  avio_seek(pb, next_off, SEEK_SET) < 0) {
465  av_log(s, AV_LOG_ERROR,
466  "Non-linear index detected, not supported\n");
467  return -1;
468  }
469  } while (next_off);
470 
471  return 0;
472 }
473 
475 {
476  RMDemuxContext *rm = s->priv_data;
477  AVStream *st;
478 
479  rm->old_format = 1;
480  st = avformat_new_stream(s, NULL);
481  if (!st)
482  return -1;
484  if (!st->priv_data)
485  return AVERROR(ENOMEM);
486  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
487 }
488 
490  AVStream *st, char *mime)
491 {
492  int number_of_streams = avio_rb16(pb);
493  int number_of_mdpr;
494  int i, ret;
495  unsigned size2;
496  for (i = 0; i<number_of_streams; i++)
497  avio_rb16(pb);
498  number_of_mdpr = avio_rb16(pb);
499  if (number_of_mdpr != 1) {
500  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
501  }
502  for (i = 0; i < number_of_mdpr; i++) {
503  AVStream *st2;
504  if (i > 0) {
505  st2 = avformat_new_stream(s, NULL);
506  if (!st2) {
507  ret = AVERROR(ENOMEM);
508  return ret;
509  }
510  st2->id = st->id + (i<<16);
511  st2->codecpar->bit_rate = st->codecpar->bit_rate;
512  st2->start_time = st->start_time;
513  st2->duration = st->duration;
516  if (!st2->priv_data)
517  return AVERROR(ENOMEM);
518  } else
519  st2 = st;
520 
521  size2 = avio_rb32(pb);
522  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
523  size2, NULL);
524  if (ret < 0)
525  return ret;
526  }
527  return 0;
528 }
529 
531 {
532  RMDemuxContext *rm = s->priv_data;
533  AVStream *st;
534  AVIOContext *pb = s->pb;
535  unsigned int tag;
536  int tag_size;
537  unsigned int start_time, duration;
538  unsigned int data_off = 0, indx_off = 0;
539  char buf[128], mime[128];
540  int flags = 0;
541  int ret = -1;
542  unsigned size, v;
543  int64_t codec_pos;
544 
545  tag = avio_rl32(pb);
546  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
547  /* very old .ra format */
548  return rm_read_header_old(s);
549  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
550  return AVERROR(EIO);
551  }
552 
553  tag_size = avio_rb32(pb);
554  avio_skip(pb, tag_size - 8);
555 
556  for(;;) {
557  if (avio_feof(pb))
558  goto fail;
559  tag = avio_rl32(pb);
560  tag_size = avio_rb32(pb);
561  avio_rb16(pb);
562  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
563  av_fourcc2str(tag), tag_size);
564  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
565  goto fail;
566  switch(tag) {
567  case MKTAG('P', 'R', 'O', 'P'):
568  /* file header */
569  avio_rb32(pb); /* max bit rate */
570  avio_rb32(pb); /* avg bit rate */
571  avio_rb32(pb); /* max packet size */
572  avio_rb32(pb); /* avg packet size */
573  avio_rb32(pb); /* nb packets */
574  duration = avio_rb32(pb); /* duration */
575  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
576  avio_rb32(pb); /* preroll */
577  indx_off = avio_rb32(pb); /* index offset */
578  data_off = avio_rb32(pb); /* data offset */
579  avio_rb16(pb); /* nb streams */
580  flags = avio_rb16(pb); /* flags */
581  break;
582  case MKTAG('C', 'O', 'N', 'T'):
583  rm_read_metadata(s, pb, 1);
584  break;
585  case MKTAG('M', 'D', 'P', 'R'):
586  st = avformat_new_stream(s, NULL);
587  if (!st) {
588  ret = AVERROR(ENOMEM);
589  goto fail;
590  }
591  st->id = avio_rb16(pb);
592  avio_rb32(pb); /* max bit rate */
593  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
594  avio_rb32(pb); /* max packet size */
595  avio_rb32(pb); /* avg packet size */
596  start_time = avio_rb32(pb); /* start time */
597  avio_rb32(pb); /* preroll */
598  duration = avio_rb32(pb); /* duration */
599  st->start_time = start_time;
600  st->duration = duration;
601  if(duration>0)
603  get_str8(pb, buf, sizeof(buf)); /* desc */
604  get_str8(pb, mime, sizeof(mime)); /* mimetype */
607  if (!st->priv_data)
608  return AVERROR(ENOMEM);
609 
610  size = avio_rb32(pb);
611  codec_pos = avio_tell(pb);
612 
613  ffio_ensure_seekback(pb, 4);
614  v = avio_rb32(pb);
615  if (v == MKBETAG('M', 'L', 'T', 'I')) {
616  ret = rm_read_multi(s, s->pb, st, mime);
617  if (ret < 0)
618  goto fail;
619  avio_seek(pb, codec_pos + size, SEEK_SET);
620  } else {
621  avio_skip(pb, -4);
622  if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
623  size, mime) < 0)
624  goto fail;
625  }
626 
627  break;
628  case MKTAG('D', 'A', 'T', 'A'):
629  goto header_end;
630  default:
631  /* unknown tag: skip it */
632  avio_skip(pb, tag_size - 10);
633  break;
634  }
635  }
636  header_end:
637  rm->nb_packets = avio_rb32(pb); /* number of packets */
638  if (!rm->nb_packets && (flags & 4))
639  rm->nb_packets = 3600 * 25;
640  avio_rb32(pb); /* next data header */
641 
642  if (!data_off)
643  data_off = avio_tell(pb) - 18;
644  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
645  !(s->flags & AVFMT_FLAG_IGNIDX) &&
646  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
647  rm_read_index(s);
648  avio_seek(pb, data_off + 18, SEEK_SET);
649  }
650 
651  return 0;
652 
653 fail:
654  rm_read_close(s);
655  return ret;
656 }
657 
658 static int get_num(AVIOContext *pb, int *len)
659 {
660  int n, n1;
661 
662  n = avio_rb16(pb);
663  (*len)-=2;
664  n &= 0x7FFF;
665  if (n >= 0x4000) {
666  return n - 0x4000;
667  } else {
668  n1 = avio_rb16(pb);
669  (*len)-=2;
670  return (n << 16) | n1;
671  }
672 }
673 
674 /* multiple of 20 bytes for ra144 (ugly) */
675 #define RAW_PACKET_SIZE 1000
676 
677 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
678  RMDemuxContext *rm = s->priv_data;
679  AVIOContext *pb = s->pb;
680  AVStream *st;
681  uint32_t state=0xFFFFFFFF;
682 
683  while(!avio_feof(pb)){
684  int len, num, i;
685  int mlti_id;
686  *pos= avio_tell(pb) - 3;
687  if(rm->remaining_len > 0){
688  num= rm->current_stream;
689  mlti_id = 0;
690  len= rm->remaining_len;
691  *timestamp = AV_NOPTS_VALUE;
692  *flags= 0;
693  }else{
694  state= (state<<8) + avio_r8(pb);
695 
696  if(state == MKBETAG('I', 'N', 'D', 'X')){
697  int n_pkts, expected_len;
698  len = avio_rb32(pb);
699  avio_skip(pb, 2);
700  n_pkts = avio_rb32(pb);
701  expected_len = 20 + n_pkts * 14;
702  if (len == 20)
703  /* some files don't add index entries to chunk size... */
704  len = expected_len;
705  else if (len != expected_len)
707  "Index size %d (%d pkts) is wrong, should be %d.\n",
708  len, n_pkts, expected_len);
709  len -= 14; // we already read part of the index header
710  if(len<0)
711  continue;
712  goto skip;
713  } else if (state == MKBETAG('D','A','T','A')) {
715  "DATA tag in middle of chunk, file may be broken.\n");
716  }
717 
718  if(state > (unsigned)0xFFFF || state <= 12)
719  continue;
720  len=state - 12;
721  state= 0xFFFFFFFF;
722 
723  num = avio_rb16(pb);
724  *timestamp = avio_rb32(pb);
725  mlti_id = (avio_r8(pb) >> 1) - 1;
726  mlti_id = FFMAX(mlti_id, 0) << 16;
727  *flags = avio_r8(pb); /* flags */
728  }
729  for(i=0;i<s->nb_streams;i++) {
730  st = s->streams[i];
731  if (mlti_id + num == st->id)
732  break;
733  }
734  if (i == s->nb_streams) {
735 skip:
736  /* skip packet if unknown number */
737  avio_skip(pb, len);
738  rm->remaining_len = 0;
739  continue;
740  }
741  *stream_index= i;
742 
743  return len;
744  }
745  return -1;
746 }
747 
749  RMDemuxContext *rm, RMStream *vst,
750  AVPacket *pkt, int len, int *pseq,
751  int64_t *timestamp)
752 {
753  int hdr;
754  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
755  int type;
756  int ret;
757 
758  hdr = avio_r8(pb); len--;
759  type = hdr >> 6;
760 
761  if(type != 3){ // not frame as a part of packet
762  seq = avio_r8(pb); len--;
763  }
764  if(type != 1){ // not whole frame
765  len2 = get_num(pb, &len);
766  pos = get_num(pb, &len);
767  pic_num = avio_r8(pb); len--;
768  }
769  if(len<0) {
770  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
771  return -1;
772  }
773  rm->remaining_len = len;
774  if(type&1){ // frame, not slice
775  if(type == 3){ // frame as a part of packet
776  len= len2;
777  *timestamp = pos;
778  }
779  if(rm->remaining_len < len) {
780  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
781  return -1;
782  }
783  rm->remaining_len -= len;
784  if ((ret = av_new_packet(pkt, len + 9)) < 0)
785  return ret;
786  pkt->data[0] = 0;
787  AV_WL32(pkt->data + 1, 1);
788  AV_WL32(pkt->data + 5, 0);
789  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
790  av_packet_unref(pkt);
791  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
792  return ret < 0 ? ret : AVERROR(EIO);
793  }
794  return 0;
795  }
796  //now we have to deal with single slice
797 
798  *pseq = seq;
799  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
800  if (len2 > ffio_limit(pb, len2)) {
801  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
802  return AVERROR_INVALIDDATA;
803  }
804  vst->slices = ((hdr & 0x3F) << 1) + 1;
805  vst->videobufsize = len2 + 8*vst->slices + 1;
806  av_packet_unref(&vst->pkt); //FIXME this should be output.
807  if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
808  return ret;
809  memset(vst->pkt.data, 0, vst->pkt.size);
810  vst->videobufpos = 8*vst->slices + 1;
811  vst->cur_slice = 0;
812  vst->curpic_num = pic_num;
813  vst->pktpos = avio_tell(pb);
814  }
815  if(type == 2)
816  len = FFMIN(len, pos);
817 
818  if(++vst->cur_slice > vst->slices) {
819  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
820  return 1;
821  }
822  if(!vst->pkt.data)
823  return AVERROR(ENOMEM);
824  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
825  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
826  if(vst->videobufpos + len > vst->videobufsize) {
827  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
828  return 1;
829  }
830  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
831  return AVERROR(EIO);
832  vst->videobufpos += len;
833  rm->remaining_len-= len;
834 
835  if (type == 2 || vst->videobufpos == vst->videobufsize) {
836  vst->pkt.data[0] = vst->cur_slice-1;
837  av_packet_move_ref(pkt, &vst->pkt);
838  if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
839  memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
840  vst->videobufpos - 1 - 8*vst->slices);
841  pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
842  pkt->pts = AV_NOPTS_VALUE;
843  pkt->pos = vst->pktpos;
844  vst->slices = 0;
845  return 0;
846  }
847 
848  return 1;
849 }
850 
851 static inline void
853 {
854  uint8_t *ptr;
855  int j;
856 
857  if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
858  ptr = pkt->data;
859  for (j=0;j<pkt->size;j+=2) {
860  FFSWAP(int, ptr[0], ptr[1]);
861  ptr += 2;
862  }
863  }
864 }
865 
866 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
867  int ret = avio_read(pb, dst, n);
868  if (ret != n) {
869  if (ret >= 0) memset(dst + ret, 0, n - ret);
870  else memset(dst , 0, n);
871  av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
872  }
873  return ret;
874 }
875 
876 int
878  AVStream *st, RMStream *ast, int len, AVPacket *pkt,
879  int *seq, int flags, int64_t timestamp)
880 {
881  RMDemuxContext *rm = s->priv_data;
882  int ret;
883 
884  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
885  rm->current_stream= st->id;
886  ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
887  if(ret)
888  return ret < 0 ? ret : -1; //got partial frame or error
889  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
890  if ((ast->deint_id == DEINT_ID_GENR) ||
891  (ast->deint_id == DEINT_ID_INT4) ||
892  (ast->deint_id == DEINT_ID_SIPR)) {
893  int x;
894  int sps = ast->sub_packet_size;
895  int cfs = ast->coded_framesize;
896  int h = ast->sub_packet_h;
897  int y = ast->sub_packet_cnt;
898  int w = ast->audio_framesize;
899 
900  if (flags & 2)
901  y = ast->sub_packet_cnt = 0;
902  if (!y)
903  ast->audiotimestamp = timestamp;
904 
905  switch (ast->deint_id) {
906  case DEINT_ID_INT4:
907  for (x = 0; x < h/2; x++)
908  readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
909  break;
910  case DEINT_ID_GENR:
911  for (x = 0; x < w/sps; x++)
912  readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
913  break;
914  case DEINT_ID_SIPR:
915  readfull(s, pb, ast->pkt.data + y * w, w);
916  break;
917  }
918 
919  if (++(ast->sub_packet_cnt) < h)
920  return -1;
921  if (ast->deint_id == DEINT_ID_SIPR)
922  ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
923 
924  ast->sub_packet_cnt = 0;
925  rm->audio_stream_num = st->index;
926  if (st->codecpar->block_align <= 0) {
927  av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
928  return AVERROR_INVALIDDATA;
929  }
930  rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
931  } else if ((ast->deint_id == DEINT_ID_VBRF) ||
932  (ast->deint_id == DEINT_ID_VBRS)) {
933  int x;
934  rm->audio_stream_num = st->index;
935  ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
936  if (ast->sub_packet_cnt) {
937  for (x = 0; x < ast->sub_packet_cnt; x++)
938  ast->sub_packet_lengths[x] = avio_rb16(pb);
939  rm->audio_pkt_cnt = ast->sub_packet_cnt;
940  ast->audiotimestamp = timestamp;
941  } else
942  return -1;
943  } else {
944  ret = av_get_packet(pb, pkt, len);
945  if (ret < 0)
946  return ret;
947  rm_ac3_swap_bytes(st, pkt);
948  }
949  } else {
950  ret = av_get_packet(pb, pkt, len);
951  if (ret < 0)
952  return ret;
953  }
954 
955  pkt->stream_index = st->index;
956 
957  pkt->pts = timestamp;
958  if (flags & 2)
959  pkt->flags |= AV_PKT_FLAG_KEY;
960 
961  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
962 }
963 
964 int
966  AVStream *st, RMStream *ast, AVPacket *pkt)
967 {
968  RMDemuxContext *rm = s->priv_data;
969  int ret;
970 
971  av_assert0 (rm->audio_pkt_cnt > 0);
972 
973  if (ast->deint_id == DEINT_ID_VBRF ||
974  ast->deint_id == DEINT_ID_VBRS) {
975  ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
976  if (ret < 0)
977  return ret;
978  } else {
979  ret = av_new_packet(pkt, st->codecpar->block_align);
980  if (ret < 0)
981  return ret;
982  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
984  st->codecpar->block_align);
985  }
986  rm->audio_pkt_cnt--;
987  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
989  pkt->flags = AV_PKT_FLAG_KEY;
990  } else
991  pkt->flags = 0;
992  pkt->stream_index = st->index;
993 
994  return rm->audio_pkt_cnt;
995 }
996 
998 {
999  RMDemuxContext *rm = s->priv_data;
1000  AVStream *st = NULL; // init to silence compiler warning
1001  int i, len, res, seq = 1;
1002  int64_t timestamp, pos;
1003  int flags;
1004 
1005  for (;;) {
1006  if (rm->audio_pkt_cnt) {
1007  // If there are queued audio packet return them first
1008  st = s->streams[rm->audio_stream_num];
1009  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1010  if(res < 0)
1011  return res;
1012  flags = 0;
1013  } else {
1014  if (rm->old_format) {
1015  RMStream *ast;
1016 
1017  st = s->streams[0];
1018  ast = st->priv_data;
1019  timestamp = AV_NOPTS_VALUE;
1020  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1021  ast->coded_framesize * ast->sub_packet_h / 2;
1022  flags = (seq++ == 1) ? 2 : 0;
1023  pos = avio_tell(s->pb);
1024  } else {
1025  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1026  if (len > 0)
1027  st = s->streams[i];
1028  }
1029 
1030  if (avio_feof(s->pb))
1031  return AVERROR_EOF;
1032  if (len <= 0)
1033  return AVERROR(EIO);
1034 
1035  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1036  &seq, flags, timestamp);
1037  if (res < -1)
1038  return res;
1039  if((flags&2) && (seq&0x7F) == 1)
1040  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1041  if (res)
1042  continue;
1043  }
1044 
1045  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1046  || st->discard >= AVDISCARD_ALL){
1047  av_packet_unref(pkt);
1048  } else
1049  break;
1050  }
1051 
1052  return 0;
1053 }
1054 
1056 {
1057  int i;
1058 
1059  for (i=0;i<s->nb_streams;i++)
1061 
1062  return 0;
1063 }
1064 
1065 static int rm_probe(const AVProbeData *p)
1066 {
1067  /* check file header */
1068  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1069  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1070  p->buf[4] == 0 && p->buf[5] == 0) ||
1071  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1072  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1073  return AVPROBE_SCORE_MAX;
1074  else
1075  return 0;
1076 }
1077 
1078 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1079  int64_t *ppos, int64_t pos_limit)
1080 {
1081  RMDemuxContext *rm = s->priv_data;
1082  int64_t pos, dts;
1083  int stream_index2, flags, len, h;
1084 
1085  pos = *ppos;
1086 
1087  if(rm->old_format)
1088  return AV_NOPTS_VALUE;
1089 
1090  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1091  return AV_NOPTS_VALUE;
1092 
1093  rm->remaining_len=0;
1094  for(;;){
1095  int seq=1;
1096  AVStream *st;
1097 
1098  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1099  if(len<0)
1100  return AV_NOPTS_VALUE;
1101 
1102  st = s->streams[stream_index2];
1103  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1104  h= avio_r8(s->pb); len--;
1105  if(!(h & 0x40)){
1106  seq = avio_r8(s->pb); len--;
1107  }
1108  }
1109 
1110  if((flags&2) && (seq&0x7F) == 1){
1111  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1112  flags, stream_index2, stream_index, dts, seq);
1113  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1114  if(stream_index2 == stream_index)
1115  break;
1116  }
1117 
1118  avio_skip(s->pb, len);
1119  }
1120  *ppos = pos;
1121  return dts;
1122 }
1123 
1124 static int rm_read_seek(AVFormatContext *s, int stream_index,
1125  int64_t pts, int flags)
1126 {
1127  RMDemuxContext *rm = s->priv_data;
1128 
1129  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1130  return -1;
1131  rm->audio_pkt_cnt = 0;
1132  return 0;
1133 }
1134 
1135 
1137  .name = "rm",
1138  .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1139  .priv_data_size = sizeof(RMDemuxContext),
1140  .read_probe = rm_probe,
1144  .read_timestamp = rm_read_dts,
1146 };
1147 
1149  .name = "rdt",
1150  .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1151  .priv_data_size = sizeof(RMDemuxContext),
1153  .flags = AVFMT_NOFILE,
1154 };
1155 
1156 static int ivr_probe(const AVProbeData *p)
1157 {
1158  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1159  memcmp(p->buf, ".REC", 4))
1160  return 0;
1161 
1162  return AVPROBE_SCORE_MAX;
1163 }
1164 
1166 {
1167  unsigned tag, type, len, tlen, value;
1168  int i, j, n, count, nb_streams = 0, ret;
1169  uint8_t key[256], val[256];
1170  AVIOContext *pb = s->pb;
1171  AVStream *st;
1172  int64_t pos, offset=0, temp;
1173 
1174  pos = avio_tell(pb);
1175  tag = avio_rl32(pb);
1176  if (tag == MKTAG('.','R','1','M')) {
1177  if (avio_rb16(pb) != 1)
1178  return AVERROR_INVALIDDATA;
1179  if (avio_r8(pb) != 1)
1180  return AVERROR_INVALIDDATA;
1181  len = avio_rb32(pb);
1182  avio_skip(pb, len);
1183  avio_skip(pb, 5);
1184  temp = avio_rb64(pb);
1185  while (!avio_feof(pb) && temp) {
1186  offset = temp;
1187  temp = avio_rb64(pb);
1188  }
1189  if (offset <= 0)
1190  return AVERROR_INVALIDDATA;
1191  avio_skip(pb, offset - avio_tell(pb));
1192  if (avio_r8(pb) != 1)
1193  return AVERROR_INVALIDDATA;
1194  len = avio_rb32(pb);
1195  avio_skip(pb, len);
1196  if (avio_r8(pb) != 2)
1197  return AVERROR_INVALIDDATA;
1198  avio_skip(pb, 16);
1199  pos = avio_tell(pb);
1200  tag = avio_rl32(pb);
1201  }
1202 
1203  if (tag != MKTAG('.','R','E','C'))
1204  return AVERROR_INVALIDDATA;
1205 
1206  if (avio_r8(pb) != 0)
1207  return AVERROR_INVALIDDATA;
1208  count = avio_rb32(pb);
1209  for (i = 0; i < count; i++) {
1210  if (avio_feof(pb))
1211  return AVERROR_INVALIDDATA;
1212 
1213  type = avio_r8(pb);
1214  tlen = avio_rb32(pb);
1215  avio_get_str(pb, tlen, key, sizeof(key));
1216  len = avio_rb32(pb);
1217  if (type == 5) {
1218  avio_get_str(pb, len, val, sizeof(val));
1219  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1220  } else if (type == 4) {
1221  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1222  for (j = 0; j < len; j++) {
1223  if (avio_feof(pb))
1224  return AVERROR_INVALIDDATA;
1225  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1226  }
1227  av_log(s, AV_LOG_DEBUG, "'\n");
1228  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1229  nb_streams = value = avio_rb32(pb);
1230  } else if (len == 4 && type == 3) {
1231  value = avio_rb32(pb);
1232  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1233  } else {
1234  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1235  avio_skip(pb, len);
1236  }
1237  }
1238 
1239  for (n = 0; n < nb_streams; n++) {
1240  st = avformat_new_stream(s, NULL);
1241  if (!st)
1242  return AVERROR(ENOMEM);
1244  if (!st->priv_data)
1245  return AVERROR(ENOMEM);
1246 
1247  if (avio_r8(pb) != 1)
1248  return AVERROR_INVALIDDATA;
1249 
1250  count = avio_rb32(pb);
1251  for (i = 0; i < count; i++) {
1252  if (avio_feof(pb))
1253  return AVERROR_INVALIDDATA;
1254 
1255  type = avio_r8(pb);
1256  tlen = avio_rb32(pb);
1257  avio_get_str(pb, tlen, key, sizeof(key));
1258  len = avio_rb32(pb);
1259  if (type == 5) {
1260  avio_get_str(pb, len, val, sizeof(val));
1261  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1262  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1263  ret = ffio_ensure_seekback(pb, 4);
1264  if (ret < 0)
1265  return ret;
1266  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1267  ret = rm_read_multi(s, pb, st, NULL);
1268  } else {
1269  if (avio_feof(pb))
1270  return AVERROR_INVALIDDATA;
1271  avio_seek(pb, -4, SEEK_CUR);
1272  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1273  }
1274 
1275  if (ret < 0)
1276  return ret;
1277  } else if (type == 4) {
1278  int j;
1279 
1280  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1281  for (j = 0; j < len; j++)
1282  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1283  av_log(s, AV_LOG_DEBUG, "'\n");
1284  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1285  st->duration = avio_rb32(pb);
1286  } else if (len == 4 && type == 3) {
1287  value = avio_rb32(pb);
1288  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1289  } else {
1290  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1291  avio_skip(pb, len);
1292  }
1293  }
1294  }
1295 
1296  if (avio_r8(pb) != 6)
1297  return AVERROR_INVALIDDATA;
1298  avio_skip(pb, 12);
1299  avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1300  if (avio_r8(pb) != 8)
1301  return AVERROR_INVALIDDATA;
1302  avio_skip(pb, 8);
1303 
1304  return 0;
1305 }
1306 
1308 {
1309  RMDemuxContext *rm = s->priv_data;
1310  int ret = AVERROR_EOF, opcode;
1311  AVIOContext *pb = s->pb;
1312  unsigned size, index;
1313  int64_t pos, pts;
1314 
1315  if (avio_feof(pb) || rm->data_end)
1316  return AVERROR_EOF;
1317 
1318  pos = avio_tell(pb);
1319 
1320  for (;;) {
1321  if (rm->audio_pkt_cnt) {
1322  // If there are queued audio packet return them first
1323  AVStream *st;
1324 
1325  st = s->streams[rm->audio_stream_num];
1326  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1327  if (ret < 0) {
1328  return ret;
1329  }
1330  } else {
1331  if (rm->remaining_len) {
1332  avio_skip(pb, rm->remaining_len);
1333  rm->remaining_len = 0;
1334  }
1335 
1336  if (avio_feof(pb))
1337  return AVERROR_EOF;
1338 
1339  opcode = avio_r8(pb);
1340  if (opcode == 2) {
1341  AVStream *st;
1342  int seq = 1;
1343 
1344  pts = avio_rb32(pb);
1345  index = avio_rb16(pb);
1346  if (index >= s->nb_streams)
1347  return AVERROR_INVALIDDATA;
1348 
1349  avio_skip(pb, 4);
1350  size = avio_rb32(pb);
1351  avio_skip(pb, 4);
1352 
1353  if (size < 1 || size > INT_MAX/4) {
1354  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1355  return AVERROR_INVALIDDATA;
1356  }
1357 
1358  st = s->streams[index];
1359  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1360  &seq, 0, pts);
1361  if (ret < -1) {
1362  return ret;
1363  } else if (ret) {
1364  continue;
1365  }
1366 
1367  pkt->pos = pos;
1368  pkt->pts = pts;
1369  pkt->stream_index = index;
1370  } else if (opcode == 7) {
1371  pos = avio_rb64(pb);
1372  if (!pos) {
1373  rm->data_end = 1;
1374  return AVERROR_EOF;
1375  }
1376  } else {
1377  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1378  return AVERROR(EIO);
1379  }
1380  }
1381 
1382  break;
1383  }
1384 
1385  return ret;
1386 }
1387 
1389  .name = "ivr",
1390  .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1391  .priv_data_size = sizeof(RMDemuxContext),
1392  .read_probe = ivr_probe,
1396  .extensions = "ivr",
1397 };
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1307
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:658
#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:675
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:489
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:2045
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:3158
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1078
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:4938
#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:1065
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:530
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:1156
#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:4519
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:304
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:418
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:748
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:1055
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:186
unsigned int pos
Definition: spdifenc.c:410
#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:677
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:239
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:866
#define FFMIN(a, b)
Definition: common.h:96
void ff_free_stream(AVFormatContext *s, AVStream *st)
Definition: utils.c:4440
uint8_t w
Definition: llviddspenc.c:38
AVInputFormat ff_rm_demuxer
Definition: rmdec.c:1136
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:1388
static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: rmdec.c:1124
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:527
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:852
#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:877
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:309
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:564
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AVInputFormat ff_rdt_demuxer
Definition: rmdec.c:1148
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
#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:3339
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:965
int den
Denominator.
Definition: rational.h:60
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:474
#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:997
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all)
Definition: rmdec.c:121
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:1165
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:2177
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:426