FFmpeg  4.1.11
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  if (ff_get_extradata(s, par, pb, size) < 0)
91  return AVERROR(ENOMEM);
92  return 0;
93 }
94 
95 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
96 {
97  char buf[1024];
98  int i;
99 
100  for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
101  int len = wide ? avio_rb16(pb) : avio_r8(pb);
102  if (len > 0) {
103  get_strl(pb, buf, sizeof(buf), len);
104  av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
105  }
106  }
107 }
108 
110 {
111  RMStream *rms = av_mallocz(sizeof(RMStream));
112  if (!rms)
113  return NULL;
114  rms->curpic_num = -1;
115  return rms;
116 }
117 
119 {
120  av_packet_unref(&rms->pkt);
121 }
122 
124  AVStream *st, RMStream *ast, int read_all)
125 {
126  char buf[256];
127  uint32_t version;
128  int ret;
129 
130  /* ra type header */
131  version = avio_rb16(pb); /* version */
132  if (version == 3) {
133  unsigned bytes_per_minute;
134  int header_size = avio_rb16(pb);
135  int64_t startpos = avio_tell(pb);
136  avio_skip(pb, 8);
137  bytes_per_minute = avio_rb16(pb);
138  avio_skip(pb, 4);
139  rm_read_metadata(s, pb, 0);
140  if ((startpos + header_size) >= avio_tell(pb) + 2) {
141  // fourcc (should always be "lpcJ")
142  avio_r8(pb);
143  get_str8(pb, buf, sizeof(buf));
144  }
145  // Skip extra header crap (this should never happen)
146  if ((startpos + header_size) > avio_tell(pb))
147  avio_skip(pb, header_size + startpos - avio_tell(pb));
148  if (bytes_per_minute)
149  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
150  st->codecpar->sample_rate = 8000;
151  st->codecpar->channels = 1;
155  ast->deint_id = DEINT_ID_INT0;
156  } else {
158  int codecdata_length;
159  unsigned bytes_per_minute;
160  /* old version (4) */
161  avio_skip(pb, 2); /* unused */
162  avio_rb32(pb); /* .ra4 */
163  avio_rb32(pb); /* data size */
164  avio_rb16(pb); /* version2 */
165  avio_rb32(pb); /* header size */
166  flavor= avio_rb16(pb); /* add codec info / flavor */
167  coded_framesize = avio_rb32(pb); /* coded frame size */
168  if (coded_framesize < 0)
169  return AVERROR_INVALIDDATA;
171 
172  avio_rb32(pb); /* ??? */
173  bytes_per_minute = avio_rb32(pb);
174  if (version == 4) {
175  if (bytes_per_minute)
176  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
177  }
178  avio_rb32(pb); /* ??? */
179  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
180  st->codecpar->block_align= avio_rb16(pb); /* frame size */
181  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
182  avio_rb16(pb); /* ??? */
183  if (version == 5) {
184  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
185  }
186  st->codecpar->sample_rate = avio_rb16(pb);
187  avio_rb32(pb);
188  st->codecpar->channels = avio_rb16(pb);
189  if (version == 5) {
190  ast->deint_id = avio_rl32(pb);
191  avio_read(pb, buf, 4);
192  buf[4] = 0;
193  } else {
194  AV_WL32(buf, 0);
195  get_str8(pb, buf, sizeof(buf)); /* desc */
196  ast->deint_id = AV_RL32(buf);
197  get_str8(pb, buf, sizeof(buf)); /* desc */
198  }
200  st->codecpar->codec_tag = AV_RL32(buf);
202  st->codecpar->codec_tag);
203 
204  switch (st->codecpar->codec_id) {
205  case AV_CODEC_ID_AC3:
207  break;
208  case AV_CODEC_ID_RA_288:
209  st->codecpar->extradata_size= 0;
210  av_freep(&st->codecpar->extradata);
213  break;
214  case AV_CODEC_ID_COOK:
216  case AV_CODEC_ID_ATRAC3:
217  case AV_CODEC_ID_SIPR:
218  if (read_all) {
219  codecdata_length = 0;
220  } else {
221  avio_rb16(pb); avio_r8(pb);
222  if (version == 5)
223  avio_r8(pb);
224  codecdata_length = avio_rb32(pb);
225  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
226  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
227  return -1;
228  }
229  }
230 
232  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
233  if (flavor > 3) {
234  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
235  flavor);
236  return -1;
237  }
238  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
240  } else {
241  if(sub_packet_size <= 0){
242  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
243  return -1;
244  }
246  }
247  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
248  return ret;
249 
250  break;
251  case AV_CODEC_ID_AAC:
252  avio_rb16(pb); avio_r8(pb);
253  if (version == 5)
254  avio_r8(pb);
255  codecdata_length = avio_rb32(pb);
256  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
257  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
258  return -1;
259  }
260  if (codecdata_length >= 1) {
261  avio_r8(pb);
262  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
263  return ret;
264  }
265  break;
266  }
267  switch (ast->deint_id) {
268  case DEINT_ID_INT4:
269  if (ast->coded_framesize > ast->audio_framesize ||
270  sub_packet_h <= 1 ||
271  ast->coded_framesize * (uint64_t)sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
272  return AVERROR_INVALIDDATA;
273  if (ast->coded_framesize * (uint64_t)sub_packet_h != 2*ast->audio_framesize) {
274  avpriv_request_sample(s, "mismatching interleaver parameters");
275  return AVERROR_INVALIDDATA;
276  }
277  break;
278  case DEINT_ID_GENR:
279  if (ast->sub_packet_size <= 0 ||
280  ast->sub_packet_size > ast->audio_framesize)
281  return AVERROR_INVALIDDATA;
282  if (ast->audio_framesize % ast->sub_packet_size)
283  return AVERROR_INVALIDDATA;
284  break;
285  case DEINT_ID_SIPR:
286  case DEINT_ID_INT0:
287  case DEINT_ID_VBRS:
288  case DEINT_ID_VBRF:
289  break;
290  default:
291  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
292  return AVERROR_INVALIDDATA;
293  }
294  if (ast->deint_id == DEINT_ID_INT4 ||
295  ast->deint_id == DEINT_ID_GENR ||
296  ast->deint_id == DEINT_ID_SIPR) {
297  if (st->codecpar->block_align <= 0 ||
298  ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
299  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
300  return AVERROR_INVALIDDATA;
301  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
302  return AVERROR(ENOMEM);
303  }
304 
305  if (read_all) {
306  avio_r8(pb);
307  avio_r8(pb);
308  avio_r8(pb);
309  rm_read_metadata(s, pb, 0);
310  }
311  }
312  return 0;
313 }
314 
316  AVStream *st, RMStream *rst,
317  unsigned int codec_data_size, const uint8_t *mime)
318 {
319  unsigned int v;
320  int size;
321  int64_t codec_pos;
322  int ret;
323 
324  if (codec_data_size > INT_MAX)
325  return AVERROR_INVALIDDATA;
326  if (codec_data_size == 0)
327  return 0;
328 
329  // Duplicate tags
332  return AVERROR_INVALIDDATA;
333 
334  avpriv_set_pts_info(st, 64, 1, 1000);
335  codec_pos = avio_tell(pb);
336  v = avio_rb32(pb);
337 
338  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
339  /* ra type header */
340  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
341  return -1;
342  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
343  avio_seek(pb, -4, SEEK_CUR);
344  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
345  return ret;
346 
350  st->codecpar->codec_tag);
351  } else if(mime && !strcmp(mime, "logical-fileinfo")){
352  int stream_count, rule_count, property_count, i;
353  ff_free_stream(s, st);
354  if (avio_rb16(pb) != 0) {
355  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
356  goto skip;
357  }
358  stream_count = avio_rb16(pb);
359  avio_skip(pb, 6*stream_count);
360  rule_count = avio_rb16(pb);
361  avio_skip(pb, 2*rule_count);
362  property_count = avio_rb16(pb);
363  for(i=0; i<property_count; i++){
364  uint8_t name[128], val[128];
365  avio_rb32(pb);
366  if (avio_rb16(pb) != 0) {
367  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
368  goto skip; //FIXME skip just this one
369  }
370  get_str8(pb, name, sizeof(name));
371  switch(avio_rb32(pb)) {
372  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
373  av_dict_set(&s->metadata, name, val, 0);
374  break;
375  default: avio_skip(pb, avio_rb16(pb));
376  }
377  }
378  } else {
379  int fps;
380  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
381  fail1:
382  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
383  goto skip;
384  }
385  st->codecpar->codec_tag = avio_rl32(pb);
387  st->codecpar->codec_tag);
388  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
389  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
390  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
391  goto fail1;
392  st->codecpar->width = avio_rb16(pb);
393  st->codecpar->height = avio_rb16(pb);
394  avio_skip(pb, 2); // looks like bits per sample
395  avio_skip(pb, 4); // always zero?
398  fps = avio_rb32(pb);
399 
400  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
401  return ret;
402 
403  if (fps > 0) {
405  0x10000, fps, (1 << 30) - 1);
406 #if FF_API_R_FRAME_RATE
407  st->r_frame_rate = st->avg_frame_rate;
408 #endif
409  } else if (s->error_recognition & AV_EF_EXPLODE) {
410  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
411  return AVERROR_INVALIDDATA;
412  }
413  }
414 
415 skip:
416  /* skip codec info */
417  size = avio_tell(pb) - codec_pos;
418  if (codec_data_size >= size) {
419  avio_skip(pb, codec_data_size - size);
420  } else {
421  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
422  }
423 
424  return 0;
425 }
426 
427 /** this function assumes that the demuxer has already seeked to the start
428  * of the INDX chunk, and will bail out if not. */
430 {
431  AVIOContext *pb = s->pb;
432  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
433  AVStream *st;
434 
435  do {
436  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
437  return -1;
438  size = avio_rb32(pb);
439  if (size < 20)
440  return -1;
441  avio_skip(pb, 2);
442  n_pkts = avio_rb32(pb);
443  str_id = avio_rb16(pb);
444  next_off = avio_rb32(pb);
445  for (n = 0; n < s->nb_streams; n++)
446  if (s->streams[n]->id == str_id) {
447  st = s->streams[n];
448  break;
449  }
450  if (n == s->nb_streams) {
451  av_log(s, AV_LOG_ERROR,
452  "Invalid stream index %d for index at pos %"PRId64"\n",
453  str_id, avio_tell(pb));
454  goto skip;
455  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
456  av_log(s, AV_LOG_ERROR,
457  "Nr. of packets in packet index for stream index %d "
458  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
459  str_id, avio_size(pb), avio_tell(pb),
460  (avio_size(pb) - avio_tell(pb)) / 14);
461  goto skip;
462  }
463 
464  for (n = 0; n < n_pkts; n++) {
465  if (avio_feof(pb))
466  return AVERROR_INVALIDDATA;
467  avio_skip(pb, 2);
468  pts = avio_rb32(pb);
469  pos = avio_rb32(pb);
470  avio_skip(pb, 4); /* packet no. */
471 
472  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
473  }
474 
475 skip:
476  if (next_off && avio_tell(pb) < next_off &&
477  avio_seek(pb, next_off, SEEK_SET) < 0) {
478  av_log(s, AV_LOG_ERROR,
479  "Non-linear index detected, not supported\n");
480  return -1;
481  }
482  } while (next_off);
483 
484  return 0;
485 }
486 
488 {
489  RMDemuxContext *rm = s->priv_data;
490  AVStream *st;
491 
492  rm->old_format = 1;
493  st = avformat_new_stream(s, NULL);
494  if (!st)
495  return -1;
497  if (!st->priv_data)
498  return AVERROR(ENOMEM);
499  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
500 }
501 
503  AVStream *st, char *mime)
504 {
505  int number_of_streams = avio_rb16(pb);
506  int number_of_mdpr;
507  int i, ret;
508  unsigned size2;
509  for (i = 0; i<number_of_streams; i++)
510  avio_rb16(pb);
511  number_of_mdpr = avio_rb16(pb);
512  if (number_of_mdpr != 1) {
513  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
514  }
515  for (i = 0; i < number_of_mdpr; i++) {
516  AVStream *st2;
517  if (i > 0) {
518  st2 = avformat_new_stream(s, NULL);
519  if (!st2) {
520  ret = AVERROR(ENOMEM);
521  return ret;
522  }
523  st2->id = st->id + (i<<16);
524  st2->codecpar->bit_rate = st->codecpar->bit_rate;
525  st2->start_time = st->start_time;
526  st2->duration = st->duration;
529  if (!st2->priv_data)
530  return AVERROR(ENOMEM);
531  } else
532  st2 = st;
533 
534  size2 = avio_rb32(pb);
535  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
536  size2, NULL);
537  if (ret < 0)
538  return ret;
539  }
540  return 0;
541 }
542 
544 {
545  RMDemuxContext *rm = s->priv_data;
546  AVStream *st;
547  AVIOContext *pb = s->pb;
548  unsigned int tag;
549  int tag_size;
550  unsigned int start_time, duration;
551  unsigned int data_off = 0, indx_off = 0;
552  char buf[128], mime[128];
553  int flags = 0;
554  int ret = -1;
555  unsigned size, v;
556  int64_t codec_pos;
557 
558  tag = avio_rl32(pb);
559  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
560  /* very old .ra format */
561  return rm_read_header_old(s);
562  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
563  return AVERROR(EIO);
564  }
565 
566  tag_size = avio_rb32(pb);
567  if (tag_size < 0)
568  return AVERROR_INVALIDDATA;
569  avio_skip(pb, tag_size - 8);
570 
571  for(;;) {
572  if (avio_feof(pb))
573  goto fail;
574  tag = avio_rl32(pb);
575  tag_size = avio_rb32(pb);
576  avio_rb16(pb);
577  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
578  av_fourcc2str(tag), tag_size);
579  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
580  goto fail;
581  switch(tag) {
582  case MKTAG('P', 'R', 'O', 'P'):
583  /* file header */
584  avio_rb32(pb); /* max bit rate */
585  avio_rb32(pb); /* avg bit rate */
586  avio_rb32(pb); /* max packet size */
587  avio_rb32(pb); /* avg packet size */
588  avio_rb32(pb); /* nb packets */
589  duration = avio_rb32(pb); /* duration */
590  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
591  avio_rb32(pb); /* preroll */
592  indx_off = avio_rb32(pb); /* index offset */
593  data_off = avio_rb32(pb); /* data offset */
594  avio_rb16(pb); /* nb streams */
595  flags = avio_rb16(pb); /* flags */
596  break;
597  case MKTAG('C', 'O', 'N', 'T'):
598  rm_read_metadata(s, pb, 1);
599  break;
600  case MKTAG('M', 'D', 'P', 'R'):
601  st = avformat_new_stream(s, NULL);
602  if (!st) {
603  ret = AVERROR(ENOMEM);
604  goto fail;
605  }
606  st->id = avio_rb16(pb);
607  avio_rb32(pb); /* max bit rate */
608  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
609  avio_rb32(pb); /* max packet size */
610  avio_rb32(pb); /* avg packet size */
611  start_time = avio_rb32(pb); /* start time */
612  avio_rb32(pb); /* preroll */
613  duration = avio_rb32(pb); /* duration */
614  st->start_time = start_time;
615  st->duration = duration;
616  if(duration>0)
618  get_str8(pb, buf, sizeof(buf)); /* desc */
619  get_str8(pb, mime, sizeof(mime)); /* mimetype */
622  if (!st->priv_data)
623  return AVERROR(ENOMEM);
624 
625  size = avio_rb32(pb);
626  codec_pos = avio_tell(pb);
627 
628  ffio_ensure_seekback(pb, 4);
629  v = avio_rb32(pb);
630  if (v == MKBETAG('M', 'L', 'T', 'I')) {
631  ret = rm_read_multi(s, s->pb, st, mime);
632  if (ret < 0)
633  goto fail;
634  avio_seek(pb, codec_pos + size, SEEK_SET);
635  } else {
636  avio_skip(pb, -4);
637  if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
638  size, mime) < 0)
639  goto fail;
640  }
641 
642  break;
643  case MKTAG('D', 'A', 'T', 'A'):
644  goto header_end;
645  default:
646  /* unknown tag: skip it */
647  avio_skip(pb, tag_size - 10);
648  break;
649  }
650  }
651  header_end:
652  rm->nb_packets = avio_rb32(pb); /* number of packets */
653  if (!rm->nb_packets && (flags & 4))
654  rm->nb_packets = 3600 * 25;
655  avio_rb32(pb); /* next data header */
656 
657  if (!data_off)
658  data_off = avio_tell(pb) - 18;
659  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
660  !(s->flags & AVFMT_FLAG_IGNIDX) &&
661  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
662  rm_read_index(s);
663  avio_seek(pb, data_off + 18, SEEK_SET);
664  }
665 
666  return 0;
667 
668 fail:
669  rm_read_close(s);
670  return ret;
671 }
672 
673 static int get_num(AVIOContext *pb, int *len)
674 {
675  int n, n1;
676 
677  n = avio_rb16(pb);
678  (*len)-=2;
679  n &= 0x7FFF;
680  if (n >= 0x4000) {
681  return n - 0x4000;
682  } else {
683  n1 = avio_rb16(pb);
684  (*len)-=2;
685  return (n << 16) | n1;
686  }
687 }
688 
689 /* multiple of 20 bytes for ra144 (ugly) */
690 #define RAW_PACKET_SIZE 1000
691 
692 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
693  RMDemuxContext *rm = s->priv_data;
694  AVIOContext *pb = s->pb;
695  AVStream *st;
696  uint32_t state=0xFFFFFFFF;
697 
698  while(!avio_feof(pb)){
699  int len, num, i;
700  int mlti_id;
701  *pos= avio_tell(pb) - 3;
702  if(rm->remaining_len > 0){
703  num= rm->current_stream;
704  mlti_id = 0;
705  len= rm->remaining_len;
706  *timestamp = AV_NOPTS_VALUE;
707  *flags= 0;
708  }else{
709  state= (state<<8) + avio_r8(pb);
710 
711  if(state == MKBETAG('I', 'N', 'D', 'X')){
712  int n_pkts;
713  int64_t expected_len;
714  len = avio_rb32(pb);
715  avio_skip(pb, 2);
716  n_pkts = avio_rb32(pb);
717  expected_len = 20 + n_pkts * 14LL;
718 
719  if (len == 20 && expected_len <= INT_MAX)
720  /* some files don't add index entries to chunk size... */
721  len = expected_len;
722  else if (len != expected_len)
724  "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
725  len, n_pkts, expected_len);
726  if(len < 14)
727  continue;
728  len -= 14; // we already read part of the index header
729  goto skip;
730  } else if (state == MKBETAG('D','A','T','A')) {
732  "DATA tag in middle of chunk, file may be broken.\n");
733  }
734 
735  if(state > (unsigned)0xFFFF || state <= 12)
736  continue;
737  len=state - 12;
738  state= 0xFFFFFFFF;
739 
740  num = avio_rb16(pb);
741  *timestamp = avio_rb32(pb);
742  mlti_id = (avio_r8(pb)>>1)-1<<16;
743  mlti_id = FFMAX(mlti_id, 0);
744  *flags = avio_r8(pb); /* flags */
745  }
746  for(i=0;i<s->nb_streams;i++) {
747  st = s->streams[i];
748  if (mlti_id + num == st->id)
749  break;
750  }
751  if (i == s->nb_streams) {
752 skip:
753  /* skip packet if unknown number */
754  avio_skip(pb, len);
755  rm->remaining_len = 0;
756  continue;
757  }
758  *stream_index= i;
759 
760  return len;
761  }
762  return -1;
763 }
764 
766  RMDemuxContext *rm, RMStream *vst,
767  AVPacket *pkt, int len, int *pseq,
768  int64_t *timestamp)
769 {
770  int hdr;
771  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
772  int type;
773  int ret;
774 
775  hdr = avio_r8(pb); len--;
776  type = hdr >> 6;
777 
778  if(type != 3){ // not frame as a part of packet
779  seq = avio_r8(pb); len--;
780  }
781  if(type != 1){ // not whole frame
782  len2 = get_num(pb, &len);
783  pos = get_num(pb, &len);
784  pic_num = avio_r8(pb); len--;
785  }
786  if(len<0) {
787  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
788  return -1;
789  }
790  rm->remaining_len = len;
791  if(type&1){ // frame, not slice
792  if(type == 3){ // frame as a part of packet
793  len= len2;
794  *timestamp = pos;
795  }
796  if(rm->remaining_len < len) {
797  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
798  return -1;
799  }
800  rm->remaining_len -= len;
801  if(av_new_packet(pkt, len + 9) < 0)
802  return AVERROR(EIO);
803  pkt->data[0] = 0;
804  AV_WL32(pkt->data + 1, 1);
805  AV_WL32(pkt->data + 5, 0);
806  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
807  av_packet_unref(pkt);
808  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
809  return ret < 0 ? ret : AVERROR(EIO);
810  }
811  return 0;
812  }
813  //now we have to deal with single slice
814 
815  *pseq = seq;
816  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
817  if (len2 > ffio_limit(pb, len2)) {
818  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
819  return AVERROR_INVALIDDATA;
820  }
821  vst->slices = ((hdr & 0x3F) << 1) + 1;
822  vst->videobufsize = len2 + 8*vst->slices + 1;
823  av_packet_unref(&vst->pkt); //FIXME this should be output.
824  if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
825  return AVERROR(ENOMEM);
826  memset(vst->pkt.data, 0, vst->pkt.size);
827  vst->videobufpos = 8*vst->slices + 1;
828  vst->cur_slice = 0;
829  vst->curpic_num = pic_num;
830  vst->pktpos = avio_tell(pb);
831  }
832  if(type == 2)
833  len = FFMIN(len, pos);
834 
835  if(++vst->cur_slice > vst->slices) {
836  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
837  return 1;
838  }
839  if(!vst->pkt.data)
840  return AVERROR(ENOMEM);
841  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
842  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
843  if(vst->videobufpos + len > vst->videobufsize) {
844  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
845  return 1;
846  }
847  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
848  return AVERROR(EIO);
849  vst->videobufpos += len;
850  rm->remaining_len-= len;
851 
852  if (type == 2 || vst->videobufpos == vst->videobufsize) {
853  vst->pkt.data[0] = vst->cur_slice-1;
854  *pkt= vst->pkt;
855  vst->pkt.data= NULL;
856  vst->pkt.size= 0;
857  vst->pkt.buf = NULL;
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(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(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 };
const char * name
Definition: avisynth_c.h:775
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1332
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:673
#define NULL
Definition: coverity.c:32
full parsing and interpolation of timestamps for frames not starting on a packet boundary ...
Definition: avformat.h:795
#define RAW_PACKET_SIZE
Definition: rmdec.c:690
const char const char void * val
Definition: avisynth_c.h:771
int remaining_len
Definition: rmdec.c:63
discard all frames except keyframes
Definition: avcodec.h:802
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:336
static int rm_read_multi(AVFormatContext *s, AVIOContext *pb, AVStream *st, char *mime)
Definition: rmdec.c:502
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:2048
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:3136
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: avcodec.h:1465
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:4899
#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: avcodec.h:3900
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:875
int size
Definition: avcodec.h:1446
Definition: rmdec.c:43
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
int cur_slice
Definition: rmdec.c:48
void * priv_data
Definition: avformat.h:889
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:331
const char * key
int version
Definition: avisynth_c.h:766
static int rm_read_header(AVFormatContext *s)
Definition: rmdec.c:543
discard all
Definition: avcodec.h:803
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:785
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3892
#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:247
static int64_t start_time
Definition: ffplay.c:330
uint8_t
static int nb_streams
Definition: ffprobe.c:276
Opaque data information usually continuous.
Definition: avutil.h:203
int width
Video only.
Definition: avcodec.h:3966
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:800
static int ivr_probe(AVProbeData *p)
Definition: rmdec.c:1178
int id
Format-specific stream ID.
Definition: avformat.h:881
enum AVStreamParseType need_parsing
Definition: avformat.h:1092
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4469
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: avcodec.h:1445
uint32_t tag
Definition: movenc.c:1478
#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:313
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:429
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:921
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:765
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:797
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4002
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:647
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3929
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1477
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
#define AVINDEX_KEYFRAME
Definition: avformat.h:810
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:258
#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:769
#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
#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: avcodec.h:3896
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1428
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:692
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int64_t pktpos
first slice position in file
Definition: rmdec.c:49
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:947
#define FFMAX(a, b)
Definition: common.h:94
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:109
#define fail()
Definition: checkasm.h:117
int data_end
Definition: rmdec.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1451
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3918
Only parse headers, do not repack.
Definition: avformat.h:794
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:638
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
static struct @303 state
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: avcodec.h:4017
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:4395
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
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:2669
int n
Definition: avisynth_c.h:684
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
if(ret< 0)
Definition: vf_mcdeint.c:279
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:548
int audio_framesize
Definition: rmdec.c:54
Stream structure.
Definition: avformat.h:874
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:598
static int rm_probe(AVProbeData *p)
Definition: rmdec.c:1087
void * buf
Definition: avisynth_c.h:690
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:315
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:448
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:610
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:118
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:1051
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:923
int sample_rate
Audio only.
Definition: avcodec.h:4010
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
full parsing and repack
Definition: avformat.h:793
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:465
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:913
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:3317
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:487
#define MKBETAG(a, b, c, d)
Definition: common.h:367
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:782
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:123
void * priv_data
Format private data.
Definition: avformat.h:1379
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3914
int channels
Audio only.
Definition: avcodec.h:4006
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1466
#define av_freep(p)
void INT64 INT64 count
Definition: avisynth_c.h:690
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:647
int64_t audiotimestamp
Audio descrambling matrix parameters.
Definition: rmdec.c:51
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1021
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:879
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:358
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3904
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: avcodec.h:1447
int videobufsize
current assembled frame size
Definition: rmdec.c:45
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:366
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:929
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:998
int sub_packet_lengths[16]
Audio frame size from container.
Definition: rmdec.c:55
This structure stores compressed data.
Definition: avcodec.h:1422
static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
Definition: rmdec.c:95
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: avcodec.h:1438
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
Perform a binary search using av_index_search_timestamp() and AVInputFormat.read_timestamp().
Definition: utils.c:2174
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:426