FFmpeg  4.3.9
rmdec.c
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1 /*
2  * "Real" compatible demuxer.
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <inttypes.h>
23 
24 #include "libavutil/avassert.h"
25 #include "libavutil/avstring.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/dict.h"
30 #include "avformat.h"
31 #include "avio_internal.h"
32 #include "internal.h"
33 #include "rmsipr.h"
34 #include "rm.h"
35 
36 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
37 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
38 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
39 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
40 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
41 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
42 
43 struct RMStream {
44  AVPacket pkt; ///< place to store merged video frame / reordered audio data
45  int videobufsize; ///< current assembled frame size
46  int videobufpos; ///< position for the next slice in the video buffer
47  int curpic_num; ///< picture number of current frame
49  int64_t pktpos; ///< first slice position in file
50  /// Audio descrambling matrix parameters
51  int64_t audiotimestamp; ///< Audio packet timestamp
52  int sub_packet_cnt; // Subpacket counter, used while reading
53  int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
54  int audio_framesize; /// Audio frame size from container
55  int sub_packet_lengths[16]; /// Length of each subpacket
56  int32_t deint_id; ///< deinterleaver used in audio stream
57 };
58 
59 typedef struct RMDemuxContext {
64  int audio_stream_num; ///< Stream number for audio packets
65  int audio_pkt_cnt; ///< Output packet counter
66  int data_end;
68 
69 static int rm_read_close(AVFormatContext *s);
70 
71 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
72 {
73  int read = avio_get_str(pb, len, buf, buf_size);
74 
75  if (read > 0)
76  avio_skip(pb, len - read);
77 }
78 
79 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
80 {
81  get_strl(pb, buf, buf_size, avio_r8(pb));
82 }
83 
85 {
86  if (size >= 1<<24) {
87  av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
88  return -1;
89  }
90  return ff_get_extradata(s, par, pb, size);
91 }
92 
93 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
94 {
95  char buf[1024];
96  int i;
97 
98  for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
99  int len = wide ? avio_rb16(pb) : avio_r8(pb);
100  if (len > 0) {
101  get_strl(pb, buf, sizeof(buf), len);
102  av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
103  }
104  }
105 }
106 
108 {
109  RMStream *rms = av_mallocz(sizeof(RMStream));
110  if (!rms)
111  return NULL;
112  rms->curpic_num = -1;
113  return rms;
114 }
115 
117 {
118  if (!rms)
119  return;
120 
121  av_packet_unref(&rms->pkt);
122 }
123 
125  AVStream *st, RMStream *ast, int read_all)
126 {
127  char buf[256];
128  uint32_t version;
129  int ret;
130 
131  /* ra type header */
132  version = avio_rb16(pb); /* version */
133  if (version == 3) {
134  unsigned bytes_per_minute;
135  int header_size = avio_rb16(pb);
136  int64_t startpos = avio_tell(pb);
137  avio_skip(pb, 8);
138  bytes_per_minute = avio_rb16(pb);
139  avio_skip(pb, 4);
140  rm_read_metadata(s, pb, 0);
141  if ((startpos + header_size) >= avio_tell(pb) + 2) {
142  // fourcc (should always be "lpcJ")
143  avio_r8(pb);
144  get_str8(pb, buf, sizeof(buf));
145  }
146  // Skip extra header crap (this should never happen)
147  if ((startpos + header_size) > avio_tell(pb))
148  avio_skip(pb, header_size + startpos - avio_tell(pb));
149  if (bytes_per_minute)
150  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
151  st->codecpar->sample_rate = 8000;
152  st->codecpar->channels = 1;
156  ast->deint_id = DEINT_ID_INT0;
157  } else {
159  int codecdata_length;
160  unsigned bytes_per_minute;
161  /* old version (4) */
162  avio_skip(pb, 2); /* unused */
163  avio_rb32(pb); /* .ra4 */
164  avio_rb32(pb); /* data size */
165  avio_rb16(pb); /* version2 */
166  avio_rb32(pb); /* header size */
167  flavor= avio_rb16(pb); /* add codec info / flavor */
168  coded_framesize = avio_rb32(pb); /* coded frame size */
169  if (coded_framesize < 0)
170  return AVERROR_INVALIDDATA;
172 
173  avio_rb32(pb); /* ??? */
174  bytes_per_minute = avio_rb32(pb);
175  if (version == 4) {
176  if (bytes_per_minute)
177  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
178  }
179  avio_rb32(pb); /* ??? */
180  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
181  st->codecpar->block_align= avio_rb16(pb); /* frame size */
182  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
183  avio_rb16(pb); /* ??? */
184  if (version == 5) {
185  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
186  }
187  st->codecpar->sample_rate = avio_rb16(pb);
188  avio_rb32(pb);
189  st->codecpar->channels = avio_rb16(pb);
190  if (version == 5) {
191  ast->deint_id = avio_rl32(pb);
192  if (avio_read(pb, buf, 4) != 4)
193  return AVERROR_INVALIDDATA;
194  buf[4] = 0;
195  } else {
196  AV_WL32(buf, 0);
197  get_str8(pb, buf, sizeof(buf)); /* desc */
198  ast->deint_id = AV_RL32(buf);
199  get_str8(pb, buf, sizeof(buf)); /* desc */
200  }
202  st->codecpar->codec_tag = AV_RL32(buf);
204  st->codecpar->codec_tag);
205 
206  switch (st->codecpar->codec_id) {
207  case AV_CODEC_ID_AC3:
209  break;
210  case AV_CODEC_ID_RA_288:
211  st->codecpar->extradata_size= 0;
212  av_freep(&st->codecpar->extradata);
215  break;
216  case AV_CODEC_ID_COOK:
218  case AV_CODEC_ID_ATRAC3:
219  case AV_CODEC_ID_SIPR:
220  if (read_all) {
221  codecdata_length = 0;
222  } else {
223  avio_rb16(pb); avio_r8(pb);
224  if (version == 5)
225  avio_r8(pb);
226  codecdata_length = avio_rb32(pb);
227  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
228  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
229  return -1;
230  }
231  }
232 
234  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
235  if (flavor > 3) {
236  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
237  flavor);
238  return -1;
239  }
240  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
242  } else {
243  if(sub_packet_size <= 0){
244  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
245  return -1;
246  }
248  }
249  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
250  return ret;
251 
252  break;
253  case AV_CODEC_ID_AAC:
254  avio_rb16(pb); avio_r8(pb);
255  if (version == 5)
256  avio_r8(pb);
257  codecdata_length = avio_rb32(pb);
258  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
259  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
260  return -1;
261  }
262  if (codecdata_length >= 1) {
263  avio_r8(pb);
264  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
265  return ret;
266  }
267  break;
268  }
269  switch (ast->deint_id) {
270  case DEINT_ID_INT4:
271  if (ast->coded_framesize > ast->audio_framesize ||
272  sub_packet_h <= 1 ||
273  ast->coded_framesize * (uint64_t)sub_packet_h > (2LL + (sub_packet_h & 1)) * ast->audio_framesize)
274  return AVERROR_INVALIDDATA;
275  if (ast->coded_framesize * (uint64_t)sub_packet_h != 2LL*ast->audio_framesize) {
276  avpriv_request_sample(s, "mismatching interleaver parameters");
277  return AVERROR_INVALIDDATA;
278  }
279  break;
280  case DEINT_ID_GENR:
281  if (ast->sub_packet_size <= 0 ||
282  ast->sub_packet_size > ast->audio_framesize)
283  return AVERROR_INVALIDDATA;
284  if (ast->audio_framesize % ast->sub_packet_size)
285  return AVERROR_INVALIDDATA;
286  break;
287  case DEINT_ID_SIPR:
288  case DEINT_ID_INT0:
289  case DEINT_ID_VBRS:
290  case DEINT_ID_VBRF:
291  break;
292  default:
293  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
294  return AVERROR_INVALIDDATA;
295  }
296  if (ast->deint_id == DEINT_ID_INT4 ||
297  ast->deint_id == DEINT_ID_GENR ||
298  ast->deint_id == DEINT_ID_SIPR) {
299  if (st->codecpar->block_align <= 0 ||
300  ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
301  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
302  return AVERROR_INVALIDDATA;
303  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
304  return AVERROR(ENOMEM);
305  }
306 
307  if (read_all) {
308  avio_r8(pb);
309  avio_r8(pb);
310  avio_r8(pb);
311  rm_read_metadata(s, pb, 0);
312  }
313  }
314  return 0;
315 }
316 
318  AVStream *st, RMStream *rst,
319  unsigned int codec_data_size, const uint8_t *mime)
320 {
321  unsigned int v;
322  int size;
323  int64_t codec_pos;
324  int ret;
325 
326  if (codec_data_size > INT_MAX)
327  return AVERROR_INVALIDDATA;
328  if (codec_data_size == 0)
329  return 0;
330 
331  // Duplicate tags
334  return AVERROR_INVALIDDATA;
335 
336  avpriv_set_pts_info(st, 64, 1, 1000);
337  codec_pos = avio_tell(pb);
338  v = avio_rb32(pb);
339 
340  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
341  /* ra type header */
342  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
343  return -1;
344  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
345  avio_seek(pb, -4, SEEK_CUR);
346  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
347  return ret;
348 
352  st->codecpar->codec_tag);
353  } else if(mime && !strcmp(mime, "logical-fileinfo")){
354  int stream_count, rule_count, property_count, i;
355  ff_free_stream(s, st);
356  if (avio_rb16(pb) != 0) {
357  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
358  goto skip;
359  }
360  stream_count = avio_rb16(pb);
361  avio_skip(pb, 6*stream_count);
362  rule_count = avio_rb16(pb);
363  avio_skip(pb, 2*rule_count);
364  property_count = avio_rb16(pb);
365  for(i=0; i<property_count; i++){
366  uint8_t name[128], val[128];
367  avio_rb32(pb);
368  if (avio_rb16(pb) != 0) {
369  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
370  goto skip; //FIXME skip just this one
371  }
372  get_str8(pb, name, sizeof(name));
373  switch(avio_rb32(pb)) {
374  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
375  av_dict_set(&s->metadata, name, val, 0);
376  break;
377  default: avio_skip(pb, avio_rb16(pb));
378  }
379  }
380  } else {
381  int fps;
382  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
383  fail1:
384  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
385  goto skip;
386  }
387  st->codecpar->codec_tag = avio_rl32(pb);
389  st->codecpar->codec_tag);
390  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
391  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
392  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
393  goto fail1;
394  st->codecpar->width = avio_rb16(pb);
395  st->codecpar->height = avio_rb16(pb);
396  avio_skip(pb, 2); // looks like bits per sample
397  avio_skip(pb, 4); // always zero?
400  fps = avio_rb32(pb);
401 
402  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
403  return ret;
404 
405  if (fps > 0) {
407  0x10000, fps, (1 << 30) - 1);
408 #if FF_API_R_FRAME_RATE
409  st->r_frame_rate = st->avg_frame_rate;
410 #endif
411  } else if (s->error_recognition & AV_EF_EXPLODE) {
412  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
413  return AVERROR_INVALIDDATA;
414  }
415  }
416 
417 skip:
418  /* skip codec info */
419  size = avio_tell(pb) - codec_pos;
420  if (codec_data_size >= size) {
421  avio_skip(pb, codec_data_size - size);
422  } else {
423  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
424  }
425 
426  return 0;
427 }
428 
429 /** this function assumes that the demuxer has already seeked to the start
430  * of the INDX chunk, and will bail out if not. */
432 {
433  AVIOContext *pb = s->pb;
434  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
435  AVStream *st;
436 
437  do {
438  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
439  return -1;
440  size = avio_rb32(pb);
441  if (size < 20)
442  return -1;
443  avio_skip(pb, 2);
444  n_pkts = avio_rb32(pb);
445  str_id = avio_rb16(pb);
446  next_off = avio_rb32(pb);
447  for (n = 0; n < s->nb_streams; n++)
448  if (s->streams[n]->id == str_id) {
449  st = s->streams[n];
450  break;
451  }
452  if (n == s->nb_streams) {
453  av_log(s, AV_LOG_ERROR,
454  "Invalid stream index %d for index at pos %"PRId64"\n",
455  str_id, avio_tell(pb));
456  goto skip;
457  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
458  av_log(s, AV_LOG_ERROR,
459  "Nr. of packets in packet index for stream index %d "
460  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
461  str_id, avio_size(pb), avio_tell(pb),
462  (avio_size(pb) - avio_tell(pb)) / 14);
463  goto skip;
464  }
465 
466  for (n = 0; n < n_pkts; n++) {
467  if (avio_feof(pb))
468  return AVERROR_INVALIDDATA;
469  avio_skip(pb, 2);
470  pts = avio_rb32(pb);
471  pos = avio_rb32(pb);
472  avio_skip(pb, 4); /* packet no. */
473 
474  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
475  }
476 
477 skip:
478  if (next_off && avio_tell(pb) < next_off &&
479  avio_seek(pb, next_off, SEEK_SET) < 0) {
480  av_log(s, AV_LOG_ERROR,
481  "Non-linear index detected, not supported\n");
482  return -1;
483  }
484  } while (next_off);
485 
486  return 0;
487 }
488 
490 {
491  RMDemuxContext *rm = s->priv_data;
492  AVStream *st;
493 
494  rm->old_format = 1;
495  st = avformat_new_stream(s, NULL);
496  if (!st)
497  return -1;
499  if (!st->priv_data)
500  return AVERROR(ENOMEM);
501  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
502 }
503 
505  AVStream *st, char *mime)
506 {
507  int number_of_streams = avio_rb16(pb);
508  int number_of_mdpr;
509  int i, ret;
510  unsigned size2;
511  for (i = 0; i<number_of_streams; i++)
512  avio_rb16(pb);
513  number_of_mdpr = avio_rb16(pb);
514  if (number_of_mdpr != 1) {
515  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
516  }
517  for (i = 0; i < number_of_mdpr; i++) {
518  AVStream *st2;
519  if (i > 0) {
520  st2 = avformat_new_stream(s, NULL);
521  if (!st2) {
522  ret = AVERROR(ENOMEM);
523  return ret;
524  }
525  st2->id = st->id + (i<<16);
526  st2->codecpar->bit_rate = st->codecpar->bit_rate;
527  st2->start_time = st->start_time;
528  st2->duration = st->duration;
531  if (!st2->priv_data)
532  return AVERROR(ENOMEM);
533  } else
534  st2 = st;
535 
536  size2 = avio_rb32(pb);
537  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
538  size2, NULL);
539  if (ret < 0)
540  return ret;
541  }
542  return 0;
543 }
544 
546 {
547  RMDemuxContext *rm = s->priv_data;
548  AVStream *st;
549  AVIOContext *pb = s->pb;
550  unsigned int tag;
551  int tag_size;
552  unsigned int start_time, duration;
553  unsigned int data_off = 0, indx_off = 0;
554  char buf[128], mime[128];
555  int flags = 0;
556  int ret;
557  unsigned size, v;
558  int64_t codec_pos;
559 
560  tag = avio_rl32(pb);
561  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
562  /* very old .ra format */
563  return rm_read_header_old(s);
564  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
565  return AVERROR(EIO);
566  }
567 
568  tag_size = avio_rb32(pb);
569  if (tag_size < 0)
570  return AVERROR_INVALIDDATA;
571  avio_skip(pb, tag_size - 8);
572 
573  for(;;) {
574  ret = AVERROR_INVALIDDATA;
575  if (avio_feof(pb))
576  goto fail;
577  tag = avio_rl32(pb);
578  tag_size = avio_rb32(pb);
579  avio_rb16(pb);
580  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
581  av_fourcc2str(tag), tag_size);
582  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
583  goto fail;
584  switch(tag) {
585  case MKTAG('P', 'R', 'O', 'P'):
586  /* file header */
587  avio_rb32(pb); /* max bit rate */
588  avio_rb32(pb); /* avg bit rate */
589  avio_rb32(pb); /* max packet size */
590  avio_rb32(pb); /* avg packet size */
591  avio_rb32(pb); /* nb packets */
592  duration = avio_rb32(pb); /* duration */
593  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
594  avio_rb32(pb); /* preroll */
595  indx_off = avio_rb32(pb); /* index offset */
596  data_off = avio_rb32(pb); /* data offset */
597  avio_rb16(pb); /* nb streams */
598  flags = avio_rb16(pb); /* flags */
599  break;
600  case MKTAG('C', 'O', 'N', 'T'):
601  rm_read_metadata(s, pb, 1);
602  break;
603  case MKTAG('M', 'D', 'P', 'R'):
604  st = avformat_new_stream(s, NULL);
605  if (!st) {
606  ret = AVERROR(ENOMEM);
607  goto fail;
608  }
609  st->id = avio_rb16(pb);
610  avio_rb32(pb); /* max bit rate */
611  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
612  avio_rb32(pb); /* max packet size */
613  avio_rb32(pb); /* avg packet size */
614  start_time = avio_rb32(pb); /* start time */
615  avio_rb32(pb); /* preroll */
616  duration = avio_rb32(pb); /* duration */
617  st->start_time = start_time;
618  st->duration = duration;
619  if(duration>0)
621  get_str8(pb, buf, sizeof(buf)); /* desc */
622  get_str8(pb, mime, sizeof(mime)); /* mimetype */
625  if (!st->priv_data)
626  return AVERROR(ENOMEM);
627 
628  size = avio_rb32(pb);
629  codec_pos = avio_tell(pb);
630 
631  ffio_ensure_seekback(pb, 4);
632  v = avio_rb32(pb);
633  if (v == MKBETAG('M', 'L', 'T', 'I')) {
634  ret = rm_read_multi(s, s->pb, st, mime);
635  if (ret < 0)
636  goto fail;
637  avio_seek(pb, codec_pos + size, SEEK_SET);
638  } else {
639  avio_skip(pb, -4);
640  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
641  size, mime);
642  if (ret < 0)
643  goto fail;
644  }
645 
646  break;
647  case MKTAG('D', 'A', 'T', 'A'):
648  goto header_end;
649  default:
650  /* unknown tag: skip it */
651  avio_skip(pb, tag_size - 10);
652  break;
653  }
654  }
655  header_end:
656  rm->nb_packets = avio_rb32(pb); /* number of packets */
657  if (!rm->nb_packets && (flags & 4))
658  rm->nb_packets = 3600 * 25;
659  avio_rb32(pb); /* next data header */
660 
661  if (!data_off)
662  data_off = avio_tell(pb) - 18;
663  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
664  !(s->flags & AVFMT_FLAG_IGNIDX) &&
665  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
666  rm_read_index(s);
667  avio_seek(pb, data_off + 18, SEEK_SET);
668  }
669 
670  return 0;
671 
672 fail:
673  rm_read_close(s);
674  return ret;
675 }
676 
677 static int get_num(AVIOContext *pb, int *len)
678 {
679  int n, n1;
680 
681  n = avio_rb16(pb);
682  (*len)-=2;
683  n &= 0x7FFF;
684  if (n >= 0x4000) {
685  return n - 0x4000;
686  } else {
687  n1 = avio_rb16(pb);
688  (*len)-=2;
689  return (n << 16) | n1;
690  }
691 }
692 
693 /* multiple of 20 bytes for ra144 (ugly) */
694 #define RAW_PACKET_SIZE 1000
695 
696 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
697  RMDemuxContext *rm = s->priv_data;
698  AVIOContext *pb = s->pb;
699  AVStream *st;
700  uint32_t state=0xFFFFFFFF;
701 
702  while(!avio_feof(pb)){
703  int len, num, i;
704  int mlti_id;
705  *pos= avio_tell(pb) - 3;
706  if(rm->remaining_len > 0){
707  num= rm->current_stream;
708  mlti_id = 0;
709  len= rm->remaining_len;
710  *timestamp = AV_NOPTS_VALUE;
711  *flags= 0;
712  }else{
713  state= (state<<8) + avio_r8(pb);
714 
715  if(state == MKBETAG('I', 'N', 'D', 'X')){
716  int n_pkts;
717  int64_t expected_len;
718  len = avio_rb32(pb);
719  avio_skip(pb, 2);
720  n_pkts = avio_rb32(pb);
721  expected_len = 20 + n_pkts * 14LL;
722 
723  if (len == 20 && expected_len <= INT_MAX)
724  /* some files don't add index entries to chunk size... */
725  len = expected_len;
726  else if (len != expected_len)
728  "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
729  len, n_pkts, expected_len);
730  if(len < 14)
731  continue;
732  len -= 14; // we already read part of the index header
733  goto skip;
734  } else if (state == MKBETAG('D','A','T','A')) {
736  "DATA tag in middle of chunk, file may be broken.\n");
737  }
738 
739  if(state > (unsigned)0xFFFF || state <= 12)
740  continue;
741  len=state - 12;
742  state= 0xFFFFFFFF;
743 
744  num = avio_rb16(pb);
745  *timestamp = avio_rb32(pb);
746  mlti_id = (avio_r8(pb) >> 1) - 1;
747  mlti_id = FFMAX(mlti_id, 0) << 16;
748  *flags = avio_r8(pb); /* flags */
749  }
750  for(i=0;i<s->nb_streams;i++) {
751  st = s->streams[i];
752  if (mlti_id + num == st->id)
753  break;
754  }
755  if (i == s->nb_streams) {
756 skip:
757  /* skip packet if unknown number */
758  avio_skip(pb, len);
759  rm->remaining_len = 0;
760  continue;
761  }
762  *stream_index= i;
763 
764  return len;
765  }
766  return -1;
767 }
768 
770  RMDemuxContext *rm, RMStream *vst,
771  AVPacket *pkt, int len, int *pseq,
772  int64_t *timestamp)
773 {
774  int hdr;
775  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
776  int type;
777  int ret;
778 
779  hdr = avio_r8(pb); len--;
780  type = hdr >> 6;
781 
782  if(type != 3){ // not frame as a part of packet
783  seq = avio_r8(pb); len--;
784  }
785  if(type != 1){ // not whole frame
786  len2 = get_num(pb, &len);
787  pos = get_num(pb, &len);
788  pic_num = avio_r8(pb); len--;
789  }
790  if(len<0) {
791  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
792  return -1;
793  }
794  rm->remaining_len = len;
795  if(type&1){ // frame, not slice
796  if(type == 3){ // frame as a part of packet
797  len= len2;
798  *timestamp = pos;
799  }
800  if(rm->remaining_len < len) {
801  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
802  return -1;
803  }
804  rm->remaining_len -= len;
805  if ((ret = av_new_packet(pkt, len + 9)) < 0)
806  return ret;
807  pkt->data[0] = 0;
808  AV_WL32(pkt->data + 1, 1);
809  AV_WL32(pkt->data + 5, 0);
810  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
811  av_packet_unref(pkt);
812  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
813  return ret < 0 ? ret : AVERROR(EIO);
814  }
815  return 0;
816  }
817  //now we have to deal with single slice
818 
819  *pseq = seq;
820  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
821  if (len2 > ffio_limit(pb, len2)) {
822  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
823  return AVERROR_INVALIDDATA;
824  }
825  vst->slices = ((hdr & 0x3F) << 1) + 1;
826  vst->videobufsize = len2 + 8*vst->slices + 1;
827  av_packet_unref(&vst->pkt); //FIXME this should be output.
828  if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
829  return ret;
830  memset(vst->pkt.data, 0, vst->pkt.size);
831  vst->videobufpos = 8*vst->slices + 1;
832  vst->cur_slice = 0;
833  vst->curpic_num = pic_num;
834  vst->pktpos = avio_tell(pb);
835  }
836  if(type == 2)
837  len = FFMIN(len, pos);
838 
839  if(++vst->cur_slice > vst->slices) {
840  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
841  return 1;
842  }
843  if(!vst->pkt.data)
844  return AVERROR(ENOMEM);
845  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
846  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
847  if(vst->videobufpos + len > vst->videobufsize) {
848  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
849  return 1;
850  }
851  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
852  return AVERROR(EIO);
853  vst->videobufpos += len;
854  rm->remaining_len-= len;
855 
856  if (type == 2 || vst->videobufpos == vst->videobufsize) {
857  vst->pkt.data[0] = vst->cur_slice-1;
858  av_packet_move_ref(pkt, &vst->pkt);
859  if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
860  memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
861  vst->videobufpos - 1 - 8*vst->slices);
862  pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
863  pkt->pts = AV_NOPTS_VALUE;
864  pkt->pos = vst->pktpos;
865  vst->slices = 0;
866  return 0;
867  }
868 
869  return 1;
870 }
871 
872 static inline void
874 {
875  uint8_t *ptr;
876  int j;
877 
878  if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
879  ptr = pkt->data;
880  for (j=0;j<pkt->size;j+=2) {
881  FFSWAP(int, ptr[0], ptr[1]);
882  ptr += 2;
883  }
884  }
885 }
886 
887 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
888  int ret = avio_read(pb, dst, n);
889  if (ret != n) {
890  if (ret >= 0) memset(dst + ret, 0, n - ret);
891  else memset(dst , 0, n);
892  av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
893  }
894  return ret;
895 }
896 
897 int
899  AVStream *st, RMStream *ast, int len, AVPacket *pkt,
900  int *seq, int flags, int64_t timestamp)
901 {
902  RMDemuxContext *rm = s->priv_data;
903  int ret;
904 
905  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
906  rm->current_stream= st->id;
907  ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
908  if(ret)
909  return ret < 0 ? ret : -1; //got partial frame or error
910  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
911  if ((ast->deint_id == DEINT_ID_GENR) ||
912  (ast->deint_id == DEINT_ID_INT4) ||
913  (ast->deint_id == DEINT_ID_SIPR)) {
914  int x;
915  int sps = ast->sub_packet_size;
916  int cfs = ast->coded_framesize;
917  int h = ast->sub_packet_h;
918  int y = ast->sub_packet_cnt;
919  int w = ast->audio_framesize;
920 
921  if (flags & 2)
922  y = ast->sub_packet_cnt = 0;
923  if (!y)
924  ast->audiotimestamp = timestamp;
925 
926  switch (ast->deint_id) {
927  case DEINT_ID_INT4:
928  for (x = 0; x < h/2; x++)
929  readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
930  break;
931  case DEINT_ID_GENR:
932  for (x = 0; x < w/sps; x++)
933  readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
934  break;
935  case DEINT_ID_SIPR:
936  readfull(s, pb, ast->pkt.data + y * w, w);
937  break;
938  }
939 
940  if (++(ast->sub_packet_cnt) < h)
941  return -1;
942  if (ast->deint_id == DEINT_ID_SIPR)
943  ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
944 
945  ast->sub_packet_cnt = 0;
946  rm->audio_stream_num = st->index;
947  if (st->codecpar->block_align <= 0) {
948  av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
949  return AVERROR_INVALIDDATA;
950  }
951  rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
952  } else if ((ast->deint_id == DEINT_ID_VBRF) ||
953  (ast->deint_id == DEINT_ID_VBRS)) {
954  int x;
955  rm->audio_stream_num = st->index;
956  ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
957  if (ast->sub_packet_cnt) {
958  for (x = 0; x < ast->sub_packet_cnt; x++)
959  ast->sub_packet_lengths[x] = avio_rb16(pb);
960  rm->audio_pkt_cnt = ast->sub_packet_cnt;
961  ast->audiotimestamp = timestamp;
962  } else
963  return -1;
964  } else {
965  ret = av_get_packet(pb, pkt, len);
966  if (ret < 0)
967  return ret;
968  rm_ac3_swap_bytes(st, pkt);
969  }
970  } else {
971  ret = av_get_packet(pb, pkt, len);
972  if (ret < 0)
973  return ret;
974  }
975 
976  pkt->stream_index = st->index;
977 
978  pkt->pts = timestamp;
979  if (flags & 2)
980  pkt->flags |= AV_PKT_FLAG_KEY;
981 
982  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
983 }
984 
985 int
987  AVStream *st, RMStream *ast, AVPacket *pkt)
988 {
989  RMDemuxContext *rm = s->priv_data;
990  int ret;
991 
992  av_assert0 (rm->audio_pkt_cnt > 0);
993 
994  if (ast->deint_id == DEINT_ID_VBRF ||
995  ast->deint_id == DEINT_ID_VBRS) {
996  ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
997  if (ret < 0)
998  return ret;
999  } else {
1000  ret = av_new_packet(pkt, st->codecpar->block_align);
1001  if (ret < 0)
1002  return ret;
1003  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
1004  (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1005  st->codecpar->block_align);
1006  }
1007  rm->audio_pkt_cnt--;
1008  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1010  pkt->flags = AV_PKT_FLAG_KEY;
1011  } else
1012  pkt->flags = 0;
1013  pkt->stream_index = st->index;
1014 
1015  return rm->audio_pkt_cnt;
1016 }
1017 
1019 {
1020  RMDemuxContext *rm = s->priv_data;
1021  AVStream *st = NULL; // init to silence compiler warning
1022  int i, res, seq = 1;
1023  int64_t timestamp, pos, len;
1024  int flags;
1025 
1026  for (;;) {
1027  if (rm->audio_pkt_cnt) {
1028  // If there are queued audio packet return them first
1029  st = s->streams[rm->audio_stream_num];
1030  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1031  if(res < 0)
1032  return res;
1033  flags = 0;
1034  } else {
1035  if (rm->old_format) {
1036  RMStream *ast;
1037 
1038  st = s->streams[0];
1039  ast = st->priv_data;
1040  timestamp = AV_NOPTS_VALUE;
1041  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1042  ast->coded_framesize * (int64_t)ast->sub_packet_h / 2;
1043  if (len > INT_MAX)
1044  return AVERROR_INVALIDDATA;
1045  flags = (seq++ == 1) ? 2 : 0;
1046  pos = avio_tell(s->pb);
1047  } else {
1048  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1049  if (len > 0)
1050  st = s->streams[i];
1051  }
1052 
1053  if (avio_feof(s->pb))
1054  return AVERROR_EOF;
1055  if (len <= 0)
1056  return AVERROR(EIO);
1057 
1058  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1059  &seq, flags, timestamp);
1060  if (res < -1)
1061  return res;
1062  if((flags&2) && (seq&0x7F) == 1)
1063  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1064  if (res)
1065  continue;
1066  }
1067 
1068  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1069  || st->discard >= AVDISCARD_ALL){
1070  av_packet_unref(pkt);
1071  } else
1072  break;
1073  }
1074 
1075  return 0;
1076 }
1077 
1079 {
1080  int i;
1081 
1082  for (i=0;i<s->nb_streams;i++)
1084 
1085  return 0;
1086 }
1087 
1088 static int rm_probe(const AVProbeData *p)
1089 {
1090  /* check file header */
1091  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1092  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1093  p->buf[4] == 0 && p->buf[5] == 0) ||
1094  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1095  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1096  return AVPROBE_SCORE_MAX;
1097  else
1098  return 0;
1099 }
1100 
1101 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1102  int64_t *ppos, int64_t pos_limit)
1103 {
1104  RMDemuxContext *rm = s->priv_data;
1105  int64_t pos, dts;
1106  int stream_index2, flags, len, h;
1107 
1108  pos = *ppos;
1109 
1110  if(rm->old_format)
1111  return AV_NOPTS_VALUE;
1112 
1113  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1114  return AV_NOPTS_VALUE;
1115 
1116  rm->remaining_len=0;
1117  for(;;){
1118  int seq=1;
1119  AVStream *st;
1120 
1121  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1122  if(len<0)
1123  return AV_NOPTS_VALUE;
1124 
1125  st = s->streams[stream_index2];
1126  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1127  h= avio_r8(s->pb); len--;
1128  if(!(h & 0x40)){
1129  seq = avio_r8(s->pb); len--;
1130  }
1131  }
1132 
1133  if((flags&2) && (seq&0x7F) == 1){
1134  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1135  flags, stream_index2, stream_index, dts, seq);
1136  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1137  if(stream_index2 == stream_index)
1138  break;
1139  }
1140 
1141  avio_skip(s->pb, len);
1142  }
1143  *ppos = pos;
1144  return dts;
1145 }
1146 
1147 static int rm_read_seek(AVFormatContext *s, int stream_index,
1148  int64_t pts, int flags)
1149 {
1150  RMDemuxContext *rm = s->priv_data;
1151 
1152  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1153  return -1;
1154  rm->audio_pkt_cnt = 0;
1155  return 0;
1156 }
1157 
1158 
1160  .name = "rm",
1161  .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1162  .priv_data_size = sizeof(RMDemuxContext),
1163  .read_probe = rm_probe,
1167  .read_timestamp = rm_read_dts,
1169 };
1170 
1172  .name = "rdt",
1173  .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1174  .priv_data_size = sizeof(RMDemuxContext),
1176  .flags = AVFMT_NOFILE,
1177 };
1178 
1179 static int ivr_probe(const AVProbeData *p)
1180 {
1181  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1182  memcmp(p->buf, ".REC", 4))
1183  return 0;
1184 
1185  return AVPROBE_SCORE_MAX;
1186 }
1187 
1189 {
1190  unsigned tag, type, len, tlen, value;
1191  int i, j, n, count, nb_streams = 0, ret;
1192  uint8_t key[256], val[256];
1193  AVIOContext *pb = s->pb;
1194  AVStream *st;
1195  int64_t pos, offset=0, temp;
1196 
1197  pos = avio_tell(pb);
1198  tag = avio_rl32(pb);
1199  if (tag == MKTAG('.','R','1','M')) {
1200  if (avio_rb16(pb) != 1)
1201  return AVERROR_INVALIDDATA;
1202  if (avio_r8(pb) != 1)
1203  return AVERROR_INVALIDDATA;
1204  len = avio_rb32(pb);
1205  avio_skip(pb, len);
1206  avio_skip(pb, 5);
1207  temp = avio_rb64(pb);
1208  while (!avio_feof(pb) && temp) {
1209  offset = temp;
1210  temp = avio_rb64(pb);
1211  }
1212  if (offset <= 0)
1213  return AVERROR_INVALIDDATA;
1214  avio_skip(pb, offset - avio_tell(pb));
1215  if (avio_r8(pb) != 1)
1216  return AVERROR_INVALIDDATA;
1217  len = avio_rb32(pb);
1218  avio_skip(pb, len);
1219  if (avio_r8(pb) != 2)
1220  return AVERROR_INVALIDDATA;
1221  avio_skip(pb, 16);
1222  pos = avio_tell(pb);
1223  tag = avio_rl32(pb);
1224  }
1225 
1226  if (tag != MKTAG('.','R','E','C'))
1227  return AVERROR_INVALIDDATA;
1228 
1229  if (avio_r8(pb) != 0)
1230  return AVERROR_INVALIDDATA;
1231  count = avio_rb32(pb);
1232  for (i = 0; i < count; i++) {
1233  if (avio_feof(pb))
1234  return AVERROR_INVALIDDATA;
1235 
1236  type = avio_r8(pb);
1237  tlen = avio_rb32(pb);
1238  avio_get_str(pb, tlen, key, sizeof(key));
1239  len = avio_rb32(pb);
1240  if (type == 5) {
1241  avio_get_str(pb, len, val, sizeof(val));
1242  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1243  } else if (type == 4) {
1244  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1245  for (j = 0; j < len; j++) {
1246  if (avio_feof(pb))
1247  return AVERROR_INVALIDDATA;
1248  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1249  }
1250  av_log(s, AV_LOG_DEBUG, "'\n");
1251  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1252  nb_streams = value = avio_rb32(pb);
1253  } else if (len == 4 && type == 3) {
1254  value = avio_rb32(pb);
1255  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1256  } else {
1257  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1258  avio_skip(pb, len);
1259  }
1260  }
1261 
1262  for (n = 0; n < nb_streams; n++) {
1263  st = avformat_new_stream(s, NULL);
1264  if (!st)
1265  return AVERROR(ENOMEM);
1267  if (!st->priv_data)
1268  return AVERROR(ENOMEM);
1269 
1270  if (avio_r8(pb) != 1)
1271  return AVERROR_INVALIDDATA;
1272 
1273  count = avio_rb32(pb);
1274  for (i = 0; i < count; i++) {
1275  if (avio_feof(pb))
1276  return AVERROR_INVALIDDATA;
1277 
1278  type = avio_r8(pb);
1279  tlen = avio_rb32(pb);
1280  avio_get_str(pb, tlen, key, sizeof(key));
1281  len = avio_rb32(pb);
1282  if (type == 5) {
1283  avio_get_str(pb, len, val, sizeof(val));
1284  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1285  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1286  ret = ffio_ensure_seekback(pb, 4);
1287  if (ret < 0)
1288  return ret;
1289  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1290  ret = rm_read_multi(s, pb, st, NULL);
1291  } else {
1292  if (avio_feof(pb))
1293  return AVERROR_INVALIDDATA;
1294  avio_seek(pb, -4, SEEK_CUR);
1295  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1296  }
1297 
1298  if (ret < 0)
1299  return ret;
1300  } else if (type == 4) {
1301  int j;
1302 
1303  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1304  for (j = 0; j < len; j++) {
1305  if (avio_feof(pb))
1306  return AVERROR_INVALIDDATA;
1307  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1308  }
1309  av_log(s, AV_LOG_DEBUG, "'\n");
1310  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1311  st->duration = avio_rb32(pb);
1312  } else if (len == 4 && type == 3) {
1313  value = avio_rb32(pb);
1314  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1315  } else {
1316  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1317  avio_skip(pb, len);
1318  }
1319  }
1320  }
1321 
1322  if (avio_r8(pb) != 6)
1323  return AVERROR_INVALIDDATA;
1324  avio_skip(pb, 12);
1325  avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1326  if (avio_r8(pb) != 8)
1327  return AVERROR_INVALIDDATA;
1328  avio_skip(pb, 8);
1329 
1330  return 0;
1331 }
1332 
1334 {
1335  RMDemuxContext *rm = s->priv_data;
1336  int ret = AVERROR_EOF, opcode;
1337  AVIOContext *pb = s->pb;
1338  unsigned size, index;
1339  int64_t pos, pts;
1340 
1341  if (avio_feof(pb) || rm->data_end)
1342  return AVERROR_EOF;
1343 
1344  pos = avio_tell(pb);
1345 
1346  for (;;) {
1347  if (rm->audio_pkt_cnt) {
1348  // If there are queued audio packet return them first
1349  AVStream *st;
1350 
1351  st = s->streams[rm->audio_stream_num];
1352  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1353  if (ret < 0) {
1354  return ret;
1355  }
1356  } else {
1357  if (rm->remaining_len) {
1358  avio_skip(pb, rm->remaining_len);
1359  rm->remaining_len = 0;
1360  }
1361 
1362  if (avio_feof(pb))
1363  return AVERROR_EOF;
1364 
1365  opcode = avio_r8(pb);
1366  if (opcode == 2) {
1367  AVStream *st;
1368  int seq = 1;
1369 
1370  pts = avio_rb32(pb);
1371  index = avio_rb16(pb);
1372  if (index >= s->nb_streams)
1373  return AVERROR_INVALIDDATA;
1374 
1375  avio_skip(pb, 4);
1376  size = avio_rb32(pb);
1377  avio_skip(pb, 4);
1378 
1379  if (size < 1 || size > INT_MAX/4) {
1380  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1381  return AVERROR_INVALIDDATA;
1382  }
1383 
1384  st = s->streams[index];
1385  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1386  &seq, 0, pts);
1387  if (ret < -1) {
1388  return ret;
1389  } else if (ret) {
1390  continue;
1391  }
1392 
1393  pkt->pos = pos;
1394  pkt->pts = pts;
1395  pkt->stream_index = index;
1396  } else if (opcode == 7) {
1397  pos = avio_rb64(pb);
1398  if (!pos) {
1399  rm->data_end = 1;
1400  return AVERROR_EOF;
1401  }
1402  } else {
1403  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1404  return AVERROR(EIO);
1405  }
1406  }
1407 
1408  break;
1409  }
1410 
1411  return ret;
1412 }
1413 
1415  .name = "ivr",
1416  .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1417  .priv_data_size = sizeof(RMDemuxContext),
1418  .read_probe = ivr_probe,
1422  .extensions = "ivr",
1423 };
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1333
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:677
#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:694
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:504
int size
#define DEINT_ID_INT0
no interleaving needed
Definition: rmdec.c:37
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:2052
static void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
Definition: rmdec.c:71
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3165
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1101
const unsigned char ff_sipr_subpk_size[4]
Definition: rmsipr.c:25
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
else temp
Definition: vf_mcdeint.c:256
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4948
#define avpriv_request_sample(...)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:877
int size
Definition: packet.h:356
Definition: rmdec.c:43
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
static int rm_probe(const AVProbeData *p)
Definition: rmdec.c:1088
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:545
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:1179
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:778
int id
Format-specific stream ID.
Definition: avformat.h:883
enum AVStreamParseType need_parsing
Definition: avformat.h:1094
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4526
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int64_t duration
Definition: movenc.c:63
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
uint8_t * data
Definition: packet.h:355
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:663
uint32_t tag
Definition: movenc.c:1532
#define AVERROR_EOF
End of file.
Definition: error.h:55
int curpic_num
picture number of current frame
Definition: rmdec.c:47
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:307
static int rm_read_index(AVFormatContext *s)
this function assumes that the demuxer has already seeked to the start of the INDX chunk...
Definition: rmdec.c:431
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:769
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:1078
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:747
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
unsigned int pos
Definition: spdifenc.c:412
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
simple assert() macros that are a bit more flexible than ISO C assert().
#define DEINT_ID_VBRF
VBR case for AAC.
Definition: rmdec.c:40
static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos)
Definition: rmdec.c:696
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
int64_t pktpos
first slice position in file
Definition: rmdec.c:49
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:949
#define FFMAX(a, b)
Definition: common.h:94
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:107
#define fail()
Definition: checkasm.h:123
int data_end
Definition: rmdec.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
Only parse headers, do not repack.
Definition: avformat.h:796
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:616
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
AVPacket pkt
place to store merged video frame / reordered audio data
Definition: rmdec.c:44
int block_align
Audio only.
Definition: codec_par.h:177
const char * name
Definition: qsvenc.c:46
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
audio channel layout utility functions
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n)
Definition: rmdec.c:887
#define FFMIN(a, b)
Definition: common.h:96
void ff_free_stream(AVFormatContext *s, AVStream *st)
Definition: utils.c:4447
uint8_t w
Definition: llviddspenc.c:38
AVInputFormat ff_rm_demuxer
Definition: rmdec.c:1159
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:1670
AVInputFormat ff_ivr_demuxer
Definition: rmdec.c:1414
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:1147
int sub_packet_cnt
Definition: rmdec.c:52
#define FF_ARRAY_ELEMS(a)
int coded_framesize
Descrambling parameters from container.
Definition: rmdec.c:53
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:545
int audio_framesize
Definition: rmdec.c:54
Stream structure.
Definition: avformat.h:876
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
static void rm_ac3_swap_bytes(AVStream *st, AVPacket *pkt)
Definition: rmdec.c:873
#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
long long int64_t
Definition: coverity.c:34
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:898
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:317
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:576
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AVInputFormat ff_rdt_demuxer
Definition: rmdec.c:1171
void ff_rm_free_rmstream(RMStream *rms)
Definition: rmdec.c:116
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
int sub_packet_h
Definition: rmdec.c:53
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
Definition: aviobuf.c:982
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:925
int sample_rate
Audio only.
Definition: codec_par.h:170
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
full parsing and repack
Definition: avformat.h:795
void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize)
Perform 4-bit block reordering for SIPR data.
Definition: rmsipr.c:41
Main libavformat public API header.
int32_t deint_id
Length of each subpacket.
Definition: rmdec.c:56
if(ret< 0)
Definition: vf_mcdeint.c:279
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:915
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
Definition: avformat.h:1618
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3346
int ff_rm_retrieve_cache(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, AVPacket *pkt)
Retrieve one cached packet from the rm-context.
Definition: rmdec.c:986
int den
Denominator.
Definition: rational.h:60
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:489
#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:1018
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all)
Definition: rmdec.c:124
void * priv_data
Format private data.
Definition: avformat.h:1379
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
int channels
Audio only.
Definition: codec_par.h:166
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1466
#define av_freep(p)
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:650
int64_t audiotimestamp
Audio descrambling matrix parameters.
Definition: rmdec.c:51
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:857
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:356
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: packet.h:357
int videobufsize
current assembled frame size
Definition: rmdec.c:45
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:406
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:931
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1000
int sub_packet_lengths[16]
Audio frame size from container.
Definition: rmdec.c:55
static double val(void *priv, double ch)
Definition: aeval.c:76
This structure stores compressed data.
Definition: packet.h:332
static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
Definition: rmdec.c:93
static int ivr_read_header(AVFormatContext *s)
Definition: rmdec.c:1188
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
Perform a binary search using av_index_search_timestamp() and AVInputFormat.read_timestamp().
Definition: utils.c:2184
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:426