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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 {
157  int flavor, sub_packet_h, coded_framesize, sub_packet_size;
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  ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
168  avio_rb32(pb); /* ??? */
169  bytes_per_minute = avio_rb32(pb);
170  if (version == 4) {
171  if (bytes_per_minute)
172  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
173  }
174  avio_rb32(pb); /* ??? */
175  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
176  st->codecpar->block_align= avio_rb16(pb); /* frame size */
177  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
178  avio_rb16(pb); /* ??? */
179  if (version == 5) {
180  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
181  }
182  st->codecpar->sample_rate = avio_rb16(pb);
183  avio_rb32(pb);
184  st->codecpar->channels = avio_rb16(pb);
185  if (version == 5) {
186  ast->deint_id = avio_rl32(pb);
187  avio_read(pb, buf, 4);
188  buf[4] = 0;
189  } else {
190  AV_WL32(buf, 0);
191  get_str8(pb, buf, sizeof(buf)); /* desc */
192  ast->deint_id = AV_RL32(buf);
193  get_str8(pb, buf, sizeof(buf)); /* desc */
194  }
196  st->codecpar->codec_tag = AV_RL32(buf);
198  st->codecpar->codec_tag);
199 
200  switch (st->codecpar->codec_id) {
201  case AV_CODEC_ID_AC3:
203  break;
204  case AV_CODEC_ID_RA_288:
205  st->codecpar->extradata_size= 0;
206  av_freep(&st->codecpar->extradata);
208  st->codecpar->block_align = coded_framesize;
209  break;
210  case AV_CODEC_ID_COOK:
212  case AV_CODEC_ID_ATRAC3:
213  case AV_CODEC_ID_SIPR:
214  if (read_all) {
215  codecdata_length = 0;
216  } else {
217  avio_rb16(pb); avio_r8(pb);
218  if (version == 5)
219  avio_r8(pb);
220  codecdata_length = avio_rb32(pb);
221  if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
222  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
223  return -1;
224  }
225  }
226 
228  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
229  if (flavor > 3) {
230  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
231  flavor);
232  return -1;
233  }
234  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
236  } else {
237  if(sub_packet_size <= 0){
238  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
239  return -1;
240  }
242  }
243  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
244  return ret;
245 
246  break;
247  case AV_CODEC_ID_AAC:
248  avio_rb16(pb); avio_r8(pb);
249  if (version == 5)
250  avio_r8(pb);
251  codecdata_length = avio_rb32(pb);
252  if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
253  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
254  return -1;
255  }
256  if (codecdata_length >= 1) {
257  avio_r8(pb);
258  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
259  return ret;
260  }
261  break;
262  }
263  switch (ast->deint_id) {
264  case DEINT_ID_INT4:
265  if (ast->coded_framesize > ast->audio_framesize ||
266  sub_packet_h <= 1 ||
267  ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
268  return AVERROR_INVALIDDATA;
269  if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
270  avpriv_request_sample(s, "mismatching interleaver parameters");
271  return AVERROR_INVALIDDATA;
272  }
273  break;
274  case DEINT_ID_GENR:
275  if (ast->sub_packet_size <= 0 ||
276  ast->sub_packet_size > ast->audio_framesize)
277  return AVERROR_INVALIDDATA;
278  if (ast->audio_framesize % ast->sub_packet_size)
279  return AVERROR_INVALIDDATA;
280  break;
281  case DEINT_ID_SIPR:
282  case DEINT_ID_INT0:
283  case DEINT_ID_VBRS:
284  case DEINT_ID_VBRF:
285  break;
286  default:
287  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
288  return AVERROR_INVALIDDATA;
289  }
290  if (ast->deint_id == DEINT_ID_INT4 ||
291  ast->deint_id == DEINT_ID_GENR ||
292  ast->deint_id == DEINT_ID_SIPR) {
293  if (st->codecpar->block_align <= 0 ||
294  ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
295  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
296  return AVERROR_INVALIDDATA;
297  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
298  return AVERROR(ENOMEM);
299  }
300 
301  if (read_all) {
302  avio_r8(pb);
303  avio_r8(pb);
304  avio_r8(pb);
305  rm_read_metadata(s, pb, 0);
306  }
307  }
308  return 0;
309 }
310 
312  AVStream *st, RMStream *rst,
313  unsigned int codec_data_size, const uint8_t *mime)
314 {
315  unsigned int v;
316  int size;
317  int64_t codec_pos;
318  int ret;
319 
320  if (codec_data_size > INT_MAX)
321  return AVERROR_INVALIDDATA;
322  if (codec_data_size == 0)
323  return 0;
324 
325  avpriv_set_pts_info(st, 64, 1, 1000);
326  codec_pos = avio_tell(pb);
327  v = avio_rb32(pb);
328 
329  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
330  /* ra type header */
331  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
332  return -1;
333  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
334  avio_seek(pb, -4, SEEK_CUR);
335  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
336  return ret;
337 
341  st->codecpar->codec_tag);
342  } else if(mime && !strcmp(mime, "logical-fileinfo")){
343  int stream_count, rule_count, property_count, i;
344  ff_free_stream(s, st);
345  if (avio_rb16(pb) != 0) {
346  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
347  goto skip;
348  }
349  stream_count = avio_rb16(pb);
350  avio_skip(pb, 6*stream_count);
351  rule_count = avio_rb16(pb);
352  avio_skip(pb, 2*rule_count);
353  property_count = avio_rb16(pb);
354  for(i=0; i<property_count; i++){
355  uint8_t name[128], val[128];
356  avio_rb32(pb);
357  if (avio_rb16(pb) != 0) {
358  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
359  goto skip; //FIXME skip just this one
360  }
361  get_str8(pb, name, sizeof(name));
362  switch(avio_rb32(pb)) {
363  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
364  av_dict_set(&s->metadata, name, val, 0);
365  break;
366  default: avio_skip(pb, avio_rb16(pb));
367  }
368  }
369  } else {
370  int fps;
371  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
372  fail1:
373  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
374  goto skip;
375  }
376  st->codecpar->codec_tag = avio_rl32(pb);
378  st->codecpar->codec_tag);
379  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
380  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
381  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
382  goto fail1;
383  st->codecpar->width = avio_rb16(pb);
384  st->codecpar->height = avio_rb16(pb);
385  avio_skip(pb, 2); // looks like bits per sample
386  avio_skip(pb, 4); // always zero?
389  fps = avio_rb32(pb);
390 
391  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
392  return ret;
393 
394  if (fps > 0) {
396  0x10000, fps, (1 << 30) - 1);
397 #if FF_API_R_FRAME_RATE
398  st->r_frame_rate = st->avg_frame_rate;
399 #endif
400  } else if (s->error_recognition & AV_EF_EXPLODE) {
401  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
402  return AVERROR_INVALIDDATA;
403  }
404  }
405 
406 skip:
407  /* skip codec info */
408  size = avio_tell(pb) - codec_pos;
409  if (codec_data_size >= size) {
410  avio_skip(pb, codec_data_size - size);
411  } else {
412  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
413  }
414 
415  return 0;
416 }
417 
418 /** this function assumes that the demuxer has already seeked to the start
419  * of the INDX chunk, and will bail out if not. */
421 {
422  AVIOContext *pb = s->pb;
423  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
424  AVStream *st;
425 
426  do {
427  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
428  return -1;
429  size = avio_rb32(pb);
430  if (size < 20)
431  return -1;
432  avio_skip(pb, 2);
433  n_pkts = avio_rb32(pb);
434  str_id = avio_rb16(pb);
435  next_off = avio_rb32(pb);
436  for (n = 0; n < s->nb_streams; n++)
437  if (s->streams[n]->id == str_id) {
438  st = s->streams[n];
439  break;
440  }
441  if (n == s->nb_streams) {
442  av_log(s, AV_LOG_ERROR,
443  "Invalid stream index %d for index at pos %"PRId64"\n",
444  str_id, avio_tell(pb));
445  goto skip;
446  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
447  av_log(s, AV_LOG_ERROR,
448  "Nr. of packets in packet index for stream index %d "
449  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
450  str_id, avio_size(pb), avio_tell(pb),
451  (avio_size(pb) - avio_tell(pb)) / 14);
452  goto skip;
453  }
454 
455  for (n = 0; n < n_pkts; n++) {
456  avio_skip(pb, 2);
457  pts = avio_rb32(pb);
458  pos = avio_rb32(pb);
459  avio_skip(pb, 4); /* packet no. */
460 
461  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
462  }
463 
464 skip:
465  if (next_off && avio_tell(pb) < next_off &&
466  avio_seek(pb, next_off, SEEK_SET) < 0) {
467  av_log(s, AV_LOG_ERROR,
468  "Non-linear index detected, not supported\n");
469  return -1;
470  }
471  } while (next_off);
472 
473  return 0;
474 }
475 
477 {
478  RMDemuxContext *rm = s->priv_data;
479  AVStream *st;
480 
481  rm->old_format = 1;
482  st = avformat_new_stream(s, NULL);
483  if (!st)
484  return -1;
486  if (!st->priv_data)
487  return AVERROR(ENOMEM);
488  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
489 }
490 
492  AVStream *st, char *mime)
493 {
494  int number_of_streams = avio_rb16(pb);
495  int number_of_mdpr;
496  int i, ret;
497  unsigned size2;
498  for (i = 0; i<number_of_streams; i++)
499  avio_rb16(pb);
500  number_of_mdpr = avio_rb16(pb);
501  if (number_of_mdpr != 1) {
502  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
503  }
504  for (i = 0; i < number_of_mdpr; i++) {
505  AVStream *st2;
506  if (i > 0) {
507  st2 = avformat_new_stream(s, NULL);
508  if (!st2) {
509  ret = AVERROR(ENOMEM);
510  return ret;
511  }
512  st2->id = st->id + (i<<16);
513  st2->codecpar->bit_rate = st->codecpar->bit_rate;
514  st2->start_time = st->start_time;
515  st2->duration = st->duration;
518  if (!st2->priv_data)
519  return AVERROR(ENOMEM);
520  } else
521  st2 = st;
522 
523  size2 = avio_rb32(pb);
524  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
525  size2, mime);
526  if (ret < 0)
527  return ret;
528  }
529  return 0;
530 }
531 
533 {
534  RMDemuxContext *rm = s->priv_data;
535  AVStream *st;
536  AVIOContext *pb = s->pb;
537  unsigned int tag;
538  int tag_size;
539  unsigned int start_time, duration;
540  unsigned int data_off = 0, indx_off = 0;
541  char buf[128], mime[128];
542  int flags = 0;
543  int ret = -1;
544  unsigned size, v;
545  int64_t codec_pos;
546 
547  tag = avio_rl32(pb);
548  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
549  /* very old .ra format */
550  return rm_read_header_old(s);
551  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
552  return AVERROR(EIO);
553  }
554 
555  tag_size = avio_rb32(pb);
556  avio_skip(pb, tag_size - 8);
557 
558  for(;;) {
559  if (avio_feof(pb))
560  goto fail;
561  tag = avio_rl32(pb);
562  tag_size = avio_rb32(pb);
563  avio_rb16(pb);
564  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
565  av_fourcc2str(tag), tag_size);
566  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
567  goto fail;
568  switch(tag) {
569  case MKTAG('P', 'R', 'O', 'P'):
570  /* file header */
571  avio_rb32(pb); /* max bit rate */
572  avio_rb32(pb); /* avg bit rate */
573  avio_rb32(pb); /* max packet size */
574  avio_rb32(pb); /* avg packet size */
575  avio_rb32(pb); /* nb packets */
576  duration = avio_rb32(pb); /* duration */
577  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
578  avio_rb32(pb); /* preroll */
579  indx_off = avio_rb32(pb); /* index offset */
580  data_off = avio_rb32(pb); /* data offset */
581  avio_rb16(pb); /* nb streams */
582  flags = avio_rb16(pb); /* flags */
583  break;
584  case MKTAG('C', 'O', 'N', 'T'):
585  rm_read_metadata(s, pb, 1);
586  break;
587  case MKTAG('M', 'D', 'P', 'R'):
588  st = avformat_new_stream(s, NULL);
589  if (!st) {
590  ret = AVERROR(ENOMEM);
591  goto fail;
592  }
593  st->id = avio_rb16(pb);
594  avio_rb32(pb); /* max bit rate */
595  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
596  avio_rb32(pb); /* max packet size */
597  avio_rb32(pb); /* avg packet size */
598  start_time = avio_rb32(pb); /* start time */
599  avio_rb32(pb); /* preroll */
600  duration = avio_rb32(pb); /* duration */
601  st->start_time = start_time;
602  st->duration = duration;
603  if(duration>0)
605  get_str8(pb, buf, sizeof(buf)); /* desc */
606  get_str8(pb, mime, sizeof(mime)); /* mimetype */
609  if (!st->priv_data)
610  return AVERROR(ENOMEM);
611 
612  size = avio_rb32(pb);
613  codec_pos = avio_tell(pb);
614 
615  ffio_ensure_seekback(pb, 4);
616  v = avio_rb32(pb);
617  if (v == MKBETAG('M', 'L', 'T', 'I')) {
618  ret = rm_read_multi(s, s->pb, st, mime);
619  if (ret < 0)
620  goto fail;
621  avio_seek(pb, codec_pos + size, SEEK_SET);
622  } else {
623  avio_skip(pb, -4);
624  if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
625  size, mime) < 0)
626  goto fail;
627  }
628 
629  break;
630  case MKTAG('D', 'A', 'T', 'A'):
631  goto header_end;
632  default:
633  /* unknown tag: skip it */
634  avio_skip(pb, tag_size - 10);
635  break;
636  }
637  }
638  header_end:
639  rm->nb_packets = avio_rb32(pb); /* number of packets */
640  if (!rm->nb_packets && (flags & 4))
641  rm->nb_packets = 3600 * 25;
642  avio_rb32(pb); /* next data header */
643 
644  if (!data_off)
645  data_off = avio_tell(pb) - 18;
646  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
647  !(s->flags & AVFMT_FLAG_IGNIDX) &&
648  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
649  rm_read_index(s);
650  avio_seek(pb, data_off + 18, SEEK_SET);
651  }
652 
653  return 0;
654 
655 fail:
656  rm_read_close(s);
657  return ret;
658 }
659 
660 static int get_num(AVIOContext *pb, int *len)
661 {
662  int n, n1;
663 
664  n = avio_rb16(pb);
665  (*len)-=2;
666  n &= 0x7FFF;
667  if (n >= 0x4000) {
668  return n - 0x4000;
669  } else {
670  n1 = avio_rb16(pb);
671  (*len)-=2;
672  return (n << 16) | n1;
673  }
674 }
675 
676 /* multiple of 20 bytes for ra144 (ugly) */
677 #define RAW_PACKET_SIZE 1000
678 
679 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
680  RMDemuxContext *rm = s->priv_data;
681  AVIOContext *pb = s->pb;
682  AVStream *st;
683  uint32_t state=0xFFFFFFFF;
684 
685  while(!avio_feof(pb)){
686  int len, num, i;
687  int mlti_id;
688  *pos= avio_tell(pb) - 3;
689  if(rm->remaining_len > 0){
690  num= rm->current_stream;
691  mlti_id = 0;
692  len= rm->remaining_len;
693  *timestamp = AV_NOPTS_VALUE;
694  *flags= 0;
695  }else{
696  state= (state<<8) + avio_r8(pb);
697 
698  if(state == MKBETAG('I', 'N', 'D', 'X')){
699  int n_pkts, expected_len;
700  len = avio_rb32(pb);
701  avio_skip(pb, 2);
702  n_pkts = avio_rb32(pb);
703  expected_len = 20 + n_pkts * 14;
704  if (len == 20)
705  /* some files don't add index entries to chunk size... */
706  len = expected_len;
707  else if (len != expected_len)
709  "Index size %d (%d pkts) is wrong, should be %d.\n",
710  len, n_pkts, expected_len);
711  len -= 14; // we already read part of the index header
712  if(len<0)
713  continue;
714  goto skip;
715  } else if (state == MKBETAG('D','A','T','A')) {
717  "DATA tag in middle of chunk, file may be broken.\n");
718  }
719 
720  if(state > (unsigned)0xFFFF || state <= 12)
721  continue;
722  len=state - 12;
723  state= 0xFFFFFFFF;
724 
725  num = avio_rb16(pb);
726  *timestamp = avio_rb32(pb);
727  mlti_id = (avio_r8(pb)>>1)-1<<16;
728  mlti_id = FFMAX(mlti_id, 0);
729  *flags = avio_r8(pb); /* flags */
730  }
731  for(i=0;i<s->nb_streams;i++) {
732  st = s->streams[i];
733  if (mlti_id + num == st->id)
734  break;
735  }
736  if (i == s->nb_streams) {
737 skip:
738  /* skip packet if unknown number */
739  avio_skip(pb, len);
740  rm->remaining_len = 0;
741  continue;
742  }
743  *stream_index= i;
744 
745  return len;
746  }
747  return -1;
748 }
749 
751  RMDemuxContext *rm, RMStream *vst,
752  AVPacket *pkt, int len, int *pseq,
753  int64_t *timestamp)
754 {
755  int hdr;
756  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
757  int type;
758  int ret;
759 
760  hdr = avio_r8(pb); len--;
761  type = hdr >> 6;
762 
763  if(type != 3){ // not frame as a part of packet
764  seq = avio_r8(pb); len--;
765  }
766  if(type != 1){ // not whole frame
767  len2 = get_num(pb, &len);
768  pos = get_num(pb, &len);
769  pic_num = avio_r8(pb); len--;
770  }
771  if(len<0) {
772  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
773  return -1;
774  }
775  rm->remaining_len = len;
776  if(type&1){ // frame, not slice
777  if(type == 3){ // frame as a part of packet
778  len= len2;
779  *timestamp = pos;
780  }
781  if(rm->remaining_len < len) {
782  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
783  return -1;
784  }
785  rm->remaining_len -= len;
786  if(av_new_packet(pkt, len + 9) < 0)
787  return AVERROR(EIO);
788  pkt->data[0] = 0;
789  AV_WL32(pkt->data + 1, 1);
790  AV_WL32(pkt->data + 5, 0);
791  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
792  av_packet_unref(pkt);
793  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
794  return ret < 0 ? ret : AVERROR(EIO);
795  }
796  return 0;
797  }
798  //now we have to deal with single slice
799 
800  *pseq = seq;
801  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
802  if (len2 > ffio_limit(pb, len2)) {
803  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
804  return AVERROR_INVALIDDATA;
805  }
806  vst->slices = ((hdr & 0x3F) << 1) + 1;
807  vst->videobufsize = len2 + 8*vst->slices + 1;
808  av_packet_unref(&vst->pkt); //FIXME this should be output.
809  if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
810  return AVERROR(ENOMEM);
811  memset(vst->pkt.data, 0, vst->pkt.size);
812  vst->videobufpos = 8*vst->slices + 1;
813  vst->cur_slice = 0;
814  vst->curpic_num = pic_num;
815  vst->pktpos = avio_tell(pb);
816  }
817  if(type == 2)
818  len = FFMIN(len, pos);
819 
820  if(++vst->cur_slice > vst->slices) {
821  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
822  return 1;
823  }
824  if(!vst->pkt.data)
825  return AVERROR(ENOMEM);
826  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
827  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
828  if(vst->videobufpos + len > vst->videobufsize) {
829  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
830  return 1;
831  }
832  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
833  return AVERROR(EIO);
834  vst->videobufpos += len;
835  rm->remaining_len-= len;
836 
837  if (type == 2 || vst->videobufpos == vst->videobufsize) {
838  vst->pkt.data[0] = vst->cur_slice-1;
839  *pkt= vst->pkt;
840  vst->pkt.data= NULL;
841  vst->pkt.size= 0;
842  vst->pkt.buf = NULL;
843  if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
844  memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
845  vst->videobufpos - 1 - 8*vst->slices);
846  pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
847  pkt->pts = AV_NOPTS_VALUE;
848  pkt->pos = vst->pktpos;
849  vst->slices = 0;
850  return 0;
851  }
852 
853  return 1;
854 }
855 
856 static inline void
858 {
859  uint8_t *ptr;
860  int j;
861 
862  if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
863  ptr = pkt->data;
864  for (j=0;j<pkt->size;j+=2) {
865  FFSWAP(int, ptr[0], ptr[1]);
866  ptr += 2;
867  }
868  }
869 }
870 
871 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
872  int ret = avio_read(pb, dst, n);
873  if (ret != n) {
874  if (ret >= 0) memset(dst + ret, 0, n - ret);
875  else memset(dst , 0, n);
876  av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
877  }
878  return ret;
879 }
880 
881 int
883  AVStream *st, RMStream *ast, int len, AVPacket *pkt,
884  int *seq, int flags, int64_t timestamp)
885 {
886  RMDemuxContext *rm = s->priv_data;
887  int ret;
888 
889  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
890  rm->current_stream= st->id;
891  ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
892  if(ret)
893  return ret < 0 ? ret : -1; //got partial frame or error
894  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
895  if ((ast->deint_id == DEINT_ID_GENR) ||
896  (ast->deint_id == DEINT_ID_INT4) ||
897  (ast->deint_id == DEINT_ID_SIPR)) {
898  int x;
899  int sps = ast->sub_packet_size;
900  int cfs = ast->coded_framesize;
901  int h = ast->sub_packet_h;
902  int y = ast->sub_packet_cnt;
903  int w = ast->audio_framesize;
904 
905  if (flags & 2)
906  y = ast->sub_packet_cnt = 0;
907  if (!y)
908  ast->audiotimestamp = timestamp;
909 
910  switch (ast->deint_id) {
911  case DEINT_ID_INT4:
912  for (x = 0; x < h/2; x++)
913  readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
914  break;
915  case DEINT_ID_GENR:
916  for (x = 0; x < w/sps; x++)
917  readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
918  break;
919  case DEINT_ID_SIPR:
920  readfull(s, pb, ast->pkt.data + y * w, w);
921  break;
922  }
923 
924  if (++(ast->sub_packet_cnt) < h)
925  return -1;
926  if (ast->deint_id == DEINT_ID_SIPR)
927  ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
928 
929  ast->sub_packet_cnt = 0;
930  rm->audio_stream_num = st->index;
931  if (st->codecpar->block_align <= 0) {
932  av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
933  return AVERROR_INVALIDDATA;
934  }
935  rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
936  } else if ((ast->deint_id == DEINT_ID_VBRF) ||
937  (ast->deint_id == DEINT_ID_VBRS)) {
938  int x;
939  rm->audio_stream_num = st->index;
940  ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
941  if (ast->sub_packet_cnt) {
942  for (x = 0; x < ast->sub_packet_cnt; x++)
943  ast->sub_packet_lengths[x] = avio_rb16(pb);
944  rm->audio_pkt_cnt = ast->sub_packet_cnt;
945  ast->audiotimestamp = timestamp;
946  } else
947  return -1;
948  } else {
949  ret = av_get_packet(pb, pkt, len);
950  if (ret < 0)
951  return ret;
952  rm_ac3_swap_bytes(st, pkt);
953  }
954  } else {
955  ret = av_get_packet(pb, pkt, len);
956  if (ret < 0)
957  return ret;
958  }
959 
960  pkt->stream_index = st->index;
961 
962  pkt->pts = timestamp;
963  if (flags & 2)
964  pkt->flags |= AV_PKT_FLAG_KEY;
965 
966  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
967 }
968 
969 int
971  AVStream *st, RMStream *ast, AVPacket *pkt)
972 {
973  RMDemuxContext *rm = s->priv_data;
974  int ret;
975 
976  av_assert0 (rm->audio_pkt_cnt > 0);
977 
978  if (ast->deint_id == DEINT_ID_VBRF ||
979  ast->deint_id == DEINT_ID_VBRS) {
980  ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
981  if (ret < 0)
982  return ret;
983  } else {
984  ret = av_new_packet(pkt, st->codecpar->block_align);
985  if (ret < 0)
986  return ret;
987  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
989  st->codecpar->block_align);
990  }
991  rm->audio_pkt_cnt--;
992  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
994  pkt->flags = AV_PKT_FLAG_KEY;
995  } else
996  pkt->flags = 0;
997  pkt->stream_index = st->index;
998 
999  return rm->audio_pkt_cnt;
1000 }
1001 
1003 {
1004  RMDemuxContext *rm = s->priv_data;
1005  AVStream *st = NULL; // init to silence compiler warning
1006  int i, len, res, seq = 1;
1007  int64_t timestamp, pos;
1008  int flags;
1009 
1010  for (;;) {
1011  if (rm->audio_pkt_cnt) {
1012  // If there are queued audio packet return them first
1013  st = s->streams[rm->audio_stream_num];
1014  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1015  if(res < 0)
1016  return res;
1017  flags = 0;
1018  } else {
1019  if (rm->old_format) {
1020  RMStream *ast;
1021 
1022  st = s->streams[0];
1023  ast = st->priv_data;
1024  timestamp = AV_NOPTS_VALUE;
1025  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1026  ast->coded_framesize * ast->sub_packet_h / 2;
1027  flags = (seq++ == 1) ? 2 : 0;
1028  pos = avio_tell(s->pb);
1029  } else {
1030  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1031  if (len > 0)
1032  st = s->streams[i];
1033  }
1034 
1035  if (avio_feof(s->pb))
1036  return AVERROR_EOF;
1037  if (len <= 0)
1038  return AVERROR(EIO);
1039 
1040  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1041  &seq, flags, timestamp);
1042  if (res < -1)
1043  return res;
1044  if((flags&2) && (seq&0x7F) == 1)
1045  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1046  if (res)
1047  continue;
1048  }
1049 
1050  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1051  || st->discard >= AVDISCARD_ALL){
1052  av_packet_unref(pkt);
1053  } else
1054  break;
1055  }
1056 
1057  return 0;
1058 }
1059 
1061 {
1062  int i;
1063 
1064  for (i=0;i<s->nb_streams;i++)
1066 
1067  return 0;
1068 }
1069 
1070 static int rm_probe(AVProbeData *p)
1071 {
1072  /* check file header */
1073  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1074  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1075  p->buf[4] == 0 && p->buf[5] == 0) ||
1076  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1077  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1078  return AVPROBE_SCORE_MAX;
1079  else
1080  return 0;
1081 }
1082 
1083 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1084  int64_t *ppos, int64_t pos_limit)
1085 {
1086  RMDemuxContext *rm = s->priv_data;
1087  int64_t pos, dts;
1088  int stream_index2, flags, len, h;
1089 
1090  pos = *ppos;
1091 
1092  if(rm->old_format)
1093  return AV_NOPTS_VALUE;
1094 
1095  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1096  return AV_NOPTS_VALUE;
1097 
1098  rm->remaining_len=0;
1099  for(;;){
1100  int seq=1;
1101  AVStream *st;
1102 
1103  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1104  if(len<0)
1105  return AV_NOPTS_VALUE;
1106 
1107  st = s->streams[stream_index2];
1108  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1109  h= avio_r8(s->pb); len--;
1110  if(!(h & 0x40)){
1111  seq = avio_r8(s->pb); len--;
1112  }
1113  }
1114 
1115  if((flags&2) && (seq&0x7F) == 1){
1116  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1117  flags, stream_index2, stream_index, dts, seq);
1118  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1119  if(stream_index2 == stream_index)
1120  break;
1121  }
1122 
1123  avio_skip(s->pb, len);
1124  }
1125  *ppos = pos;
1126  return dts;
1127 }
1128 
1129 static int rm_read_seek(AVFormatContext *s, int stream_index,
1130  int64_t pts, int flags)
1131 {
1132  RMDemuxContext *rm = s->priv_data;
1133 
1134  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1135  return -1;
1136  rm->audio_pkt_cnt = 0;
1137  return 0;
1138 }
1139 
1140 
1142  .name = "rm",
1143  .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1144  .priv_data_size = sizeof(RMDemuxContext),
1145  .read_probe = rm_probe,
1149  .read_timestamp = rm_read_dts,
1151 };
1152 
1154  .name = "rdt",
1155  .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1156  .priv_data_size = sizeof(RMDemuxContext),
1158  .flags = AVFMT_NOFILE,
1159 };
1160 
1161 static int ivr_probe(AVProbeData *p)
1162 {
1163  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1164  memcmp(p->buf, ".REC", 4))
1165  return 0;
1166 
1167  return AVPROBE_SCORE_MAX;
1168 }
1169 
1171 {
1172  unsigned tag, type, len, tlen, value;
1173  int i, j, n, count, nb_streams = 0, ret;
1174  uint8_t key[256], val[256];
1175  AVIOContext *pb = s->pb;
1176  AVStream *st;
1177  int64_t pos, offset, temp;
1178 
1179  pos = avio_tell(pb);
1180  tag = avio_rl32(pb);
1181  if (tag == MKTAG('.','R','1','M')) {
1182  if (avio_rb16(pb) != 1)
1183  return AVERROR_INVALIDDATA;
1184  if (avio_r8(pb) != 1)
1185  return AVERROR_INVALIDDATA;
1186  len = avio_rb32(pb);
1187  avio_skip(pb, len);
1188  avio_skip(pb, 5);
1189  temp = avio_rb64(pb);
1190  while (!avio_feof(pb) && temp) {
1191  offset = temp;
1192  temp = avio_rb64(pb);
1193  }
1194  avio_skip(pb, offset - avio_tell(pb));
1195  if (avio_r8(pb) != 1)
1196  return AVERROR_INVALIDDATA;
1197  len = avio_rb32(pb);
1198  avio_skip(pb, len);
1199  if (avio_r8(pb) != 2)
1200  return AVERROR_INVALIDDATA;
1201  avio_skip(pb, 16);
1202  pos = avio_tell(pb);
1203  tag = avio_rl32(pb);
1204  }
1205 
1206  if (tag != MKTAG('.','R','E','C'))
1207  return AVERROR_INVALIDDATA;
1208 
1209  if (avio_r8(pb) != 0)
1210  return AVERROR_INVALIDDATA;
1211  count = avio_rb32(pb);
1212  for (i = 0; i < count; i++) {
1213  if (avio_feof(pb))
1214  return AVERROR_INVALIDDATA;
1215 
1216  type = avio_r8(pb);
1217  tlen = avio_rb32(pb);
1218  avio_get_str(pb, tlen, key, sizeof(key));
1219  len = avio_rb32(pb);
1220  if (type == 5) {
1221  avio_get_str(pb, len, val, sizeof(val));
1222  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1223  } else if (type == 4) {
1224  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1225  for (j = 0; j < len; j++) {
1226  if (avio_feof(pb))
1227  return AVERROR_INVALIDDATA;
1228  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1229  }
1230  av_log(s, AV_LOG_DEBUG, "'\n");
1231  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1232  nb_streams = value = avio_rb32(pb);
1233  } else if (len == 4 && type == 3) {
1234  value = avio_rb32(pb);
1235  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1236  } else {
1237  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1238  avio_skip(pb, len);
1239  }
1240  }
1241 
1242  for (n = 0; n < nb_streams; n++) {
1243  st = avformat_new_stream(s, NULL);
1244  if (!st)
1245  return AVERROR(ENOMEM);
1247  if (!st->priv_data)
1248  return AVERROR(ENOMEM);
1249 
1250  if (avio_r8(pb) != 1)
1251  return AVERROR_INVALIDDATA;
1252 
1253  count = avio_rb32(pb);
1254  for (i = 0; i < count; i++) {
1255  if (avio_feof(pb))
1256  return AVERROR_INVALIDDATA;
1257 
1258  type = avio_r8(pb);
1259  tlen = avio_rb32(pb);
1260  avio_get_str(pb, tlen, key, sizeof(key));
1261  len = avio_rb32(pb);
1262  if (type == 5) {
1263  avio_get_str(pb, len, val, sizeof(val));
1264  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1265  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1266  ret = ffio_ensure_seekback(pb, 4);
1267  if (ret < 0)
1268  return ret;
1269  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1270  ret = rm_read_multi(s, pb, st, NULL);
1271  } else {
1272  avio_seek(pb, -4, SEEK_CUR);
1273  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1274  }
1275 
1276  if (ret < 0)
1277  return ret;
1278  } else if (type == 4) {
1279  int j;
1280 
1281  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1282  for (j = 0; j < len; j++)
1283  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1284  av_log(s, AV_LOG_DEBUG, "'\n");
1285  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1286  st->duration = avio_rb32(pb);
1287  } else if (len == 4 && type == 3) {
1288  value = avio_rb32(pb);
1289  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1290  } else {
1291  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1292  avio_skip(pb, len);
1293  }
1294  }
1295  }
1296 
1297  if (avio_r8(pb) != 6)
1298  return AVERROR_INVALIDDATA;
1299  avio_skip(pb, 12);
1300  avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1301  if (avio_r8(pb) != 8)
1302  return AVERROR_INVALIDDATA;
1303  avio_skip(pb, 8);
1304 
1305  return 0;
1306 }
1307 
1309 {
1310  RMDemuxContext *rm = s->priv_data;
1311  int ret = AVERROR_EOF, opcode;
1312  AVIOContext *pb = s->pb;
1313  unsigned size, index;
1314  int64_t pos, pts;
1315 
1316  if (avio_feof(pb) || rm->data_end)
1317  return AVERROR_EOF;
1318 
1319  pos = avio_tell(pb);
1320 
1321  for (;;) {
1322  if (rm->audio_pkt_cnt) {
1323  // If there are queued audio packet return them first
1324  AVStream *st;
1325 
1326  st = s->streams[rm->audio_stream_num];
1327  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1328  if (ret < 0) {
1329  return ret;
1330  }
1331  } else {
1332  if (rm->remaining_len) {
1333  avio_skip(pb, rm->remaining_len);
1334  rm->remaining_len = 0;
1335  }
1336 
1337  if (avio_feof(pb))
1338  return AVERROR_EOF;
1339 
1340  opcode = avio_r8(pb);
1341  if (opcode == 2) {
1342  AVStream *st;
1343  int seq = 1;
1344 
1345  pts = avio_rb32(pb);
1346  index = avio_rb16(pb);
1347  if (index >= s->nb_streams)
1348  return AVERROR_INVALIDDATA;
1349 
1350  avio_skip(pb, 4);
1351  size = avio_rb32(pb);
1352  avio_skip(pb, 4);
1353 
1354  if (size < 1 || size > INT_MAX/4) {
1355  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1356  return AVERROR_INVALIDDATA;
1357  }
1358 
1359  st = s->streams[index];
1360  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1361  &seq, 0, pts);
1362  if (ret < -1) {
1363  return ret;
1364  } else if (ret) {
1365  continue;
1366  }
1367 
1368  pkt->pos = pos;
1369  pkt->pts = pts;
1370  pkt->stream_index = index;
1371  } else if (opcode == 7) {
1372  pos = avio_rb64(pb);
1373  if (!pos) {
1374  rm->data_end = 1;
1375  return AVERROR_EOF;
1376  }
1377  } else {
1378  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1379  return AVERROR(EIO);
1380  }
1381  }
1382 
1383  break;
1384  }
1385 
1386  return ret;
1387 }
1388 
1390  .name = "ivr",
1391  .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1392  .priv_data_size = sizeof(RMDemuxContext),
1393  .read_probe = ivr_probe,
1397  .extensions = "ivr",
1398 };
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1308
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:660
#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:677
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:793
const char * s
Definition: avisynth_c.h:768
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:491
#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:2038
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:3108
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1083
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:1450
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:4811
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:3884
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:874
int size
Definition: avcodec.h:1431
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:888
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
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
static int rm_read_header(AVFormatContext *s)
Definition: rmdec.c:532
discard all
Definition: avcodec.h:794
static AVPacket pkt
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:786
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3876
#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:1342
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:1475
Public dictionary API.
int ffio_limit(AVIOContext *s, int size)
Definition: utils.c:247
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int64_t start_time
Definition: ffplay.c:327
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:3950
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:801
static int ivr_probe(AVProbeData *p)
Definition: rmdec.c:1161
int id
Format-specific stream ID.
Definition: avformat.h:880
enum AVStreamParseType need_parsing
Definition: avformat.h:1091
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4441
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1410
int64_t duration
Definition: movenc.c:63
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1473
uint8_t * data
Definition: avcodec.h:1430
static int flags
Definition: log.c:55
uint32_t tag
Definition: movenc.c:1455
#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:310
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:420
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:922
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:750
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:3986
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:648
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3913
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1462
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 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:1580
static int rm_read_close(AVFormatContext *s)
Definition: rmdec.c:1060
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:770
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#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:3880
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1413
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:679
int64_t pktpos
first slice position in file
Definition: rmdec.c:49
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
#define FFMAX(a, b)
Definition: common.h:94
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:109
#define fail()
Definition: checkasm.h:116
int data_end
Definition: rmdec.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1436
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3902
Only parse headers, do not repack.
Definition: avformat.h:794
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:639
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1398
AVPacket pkt
place to store merged video frame / reordered audio data
Definition: rmdec.c:44
int block_align
Audio only.
Definition: avcodec.h:4001
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:871
#define FFMIN(a, b)
Definition: common.h:96
void ff_free_stream(AVFormatContext *s, AVStream *st)
Definition: utils.c:4367
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
uint8_t w
Definition: llviddspenc.c:38
AVInputFormat ff_rm_demuxer
Definition: rmdec.c:1141
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
int32_t
#define DEINT_ID_INT4
interleaving for 28.8
Definition: rmdec.c:38
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2653
int n
Definition: avisynth_c.h:684
AVInputFormat ff_ivr_demuxer
Definition: rmdec.c:1389
static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: rmdec.c:1129
static struct @271 state
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:530
int audio_framesize
Definition: rmdec.c:54
Stream structure.
Definition: avformat.h:873
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:857
#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:1384
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:592
static int rm_probe(AVProbeData *p)
Definition: rmdec.c:1070
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
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:882
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
int 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:311
int current_stream
Definition: rmdec.c:62
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
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AVInputFormat ff_rdt_demuxer
Definition: rmdec.c:1153
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:1052
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:922
int sample_rate
Audio only.
Definition: avcodec.h:3994
#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:912
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
Definition: avformat.h:1607
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:3289
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:970
int den
Denominator.
Definition: rational.h:60
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:476
#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:773
int slices
Definition: rmdec.c:48
int len
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1002
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:1370
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3898
int channels
Audio only.
Definition: avcodec.h:3990
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1457
#define av_freep(p)
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:1020
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:880
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:3888
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: avcodec.h:1432
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:928
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:997
int sub_packet_lengths[16]
Audio frame size from container.
Definition: rmdec.c:55
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1407
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:1170
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1423
#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:2162
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
const char * name
Definition: opengl_enc.c:103