FFmpeg  3.4.9
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 i;
74  char *q, r;
75 
76  q = buf;
77  for(i=0;i<len;i++) {
78  r = avio_r8(pb);
79  if (i < buf_size - 1)
80  *q++ = r;
81  }
82  if (buf_size > 0) *q = '\0';
83 }
84 
85 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
86 {
87  get_strl(pb, buf, buf_size, avio_r8(pb));
88 }
89 
91 {
92  if (size >= 1<<24) {
93  av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
94  return -1;
95  }
96  if (ff_get_extradata(s, par, pb, size) < 0)
97  return AVERROR(ENOMEM);
98  return 0;
99 }
100 
101 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
102 {
103  char buf[1024];
104  int i;
105 
106  for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
107  int len = wide ? avio_rb16(pb) : avio_r8(pb);
108  get_strl(pb, buf, sizeof(buf), len);
109  av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
110  }
111 }
112 
114 {
115  RMStream *rms = av_mallocz(sizeof(RMStream));
116  if (!rms)
117  return NULL;
118  rms->curpic_num = -1;
119  return rms;
120 }
121 
123 {
124  av_packet_unref(&rms->pkt);
125 }
126 
128  AVStream *st, RMStream *ast, int read_all)
129 {
130  char buf[256];
131  uint32_t version;
132  int ret;
133 
134  // Duplicate tags
136  return AVERROR_INVALIDDATA;
137 
138  /* ra type header */
139  version = avio_rb16(pb); /* version */
140  if (version == 3) {
141  unsigned bytes_per_minute;
142  int header_size = avio_rb16(pb);
143  int64_t startpos = avio_tell(pb);
144  avio_skip(pb, 8);
145  bytes_per_minute = avio_rb16(pb);
146  avio_skip(pb, 4);
147  rm_read_metadata(s, pb, 0);
148  if ((startpos + header_size) >= avio_tell(pb) + 2) {
149  // fourcc (should always be "lpcJ")
150  avio_r8(pb);
151  get_str8(pb, buf, sizeof(buf));
152  }
153  // Skip extra header crap (this should never happen)
154  if ((startpos + header_size) > avio_tell(pb))
155  avio_skip(pb, header_size + startpos - avio_tell(pb));
156  if (bytes_per_minute)
157  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
158  st->codecpar->sample_rate = 8000;
159  st->codecpar->channels = 1;
163  ast->deint_id = DEINT_ID_INT0;
164  } else {
166  int codecdata_length;
167  unsigned bytes_per_minute;
168  /* old version (4) */
169  avio_skip(pb, 2); /* unused */
170  avio_rb32(pb); /* .ra4 */
171  avio_rb32(pb); /* data size */
172  avio_rb16(pb); /* version2 */
173  avio_rb32(pb); /* header size */
174  flavor= avio_rb16(pb); /* add codec info / flavor */
175  coded_framesize = avio_rb32(pb); /* coded frame size */
176  if (coded_framesize < 0)
177  return AVERROR_INVALIDDATA;
179 
180  avio_rb32(pb); /* ??? */
181  bytes_per_minute = avio_rb32(pb);
182  if (version == 4) {
183  if (bytes_per_minute)
184  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
185  }
186  avio_rb32(pb); /* ??? */
187  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
188  st->codecpar->block_align= avio_rb16(pb); /* frame size */
189  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
190  avio_rb16(pb); /* ??? */
191  if (version == 5) {
192  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
193  }
194  st->codecpar->sample_rate = avio_rb16(pb);
195  avio_rb32(pb);
196  st->codecpar->channels = avio_rb16(pb);
197  if (version == 5) {
198  ast->deint_id = avio_rl32(pb);
199  avio_read(pb, buf, 4);
200  buf[4] = 0;
201  } else {
202  AV_WL32(buf, 0);
203  get_str8(pb, buf, sizeof(buf)); /* desc */
204  ast->deint_id = AV_RL32(buf);
205  get_str8(pb, buf, sizeof(buf)); /* desc */
206  }
208  st->codecpar->codec_tag = AV_RL32(buf);
210  st->codecpar->codec_tag);
211 
212  switch (st->codecpar->codec_id) {
213  case AV_CODEC_ID_AC3:
215  break;
216  case AV_CODEC_ID_RA_288:
217  st->codecpar->extradata_size= 0;
218  av_freep(&st->codecpar->extradata);
221  break;
222  case AV_CODEC_ID_COOK:
224  case AV_CODEC_ID_ATRAC3:
225  case AV_CODEC_ID_SIPR:
226  if (read_all) {
227  codecdata_length = 0;
228  } else {
229  avio_rb16(pb); avio_r8(pb);
230  if (version == 5)
231  avio_r8(pb);
232  codecdata_length = avio_rb32(pb);
233  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
234  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
235  return -1;
236  }
237  }
238 
240  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
241  if (flavor > 3) {
242  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
243  flavor);
244  return -1;
245  }
246  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
248  } else {
249  if(sub_packet_size <= 0){
250  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
251  return -1;
252  }
254  }
255  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
256  return ret;
257 
258  break;
259  case AV_CODEC_ID_AAC:
260  avio_rb16(pb); avio_r8(pb);
261  if (version == 5)
262  avio_r8(pb);
263  codecdata_length = avio_rb32(pb);
264  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
265  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
266  return -1;
267  }
268  if (codecdata_length >= 1) {
269  avio_r8(pb);
270  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
271  return ret;
272  }
273  break;
274  }
275  switch (ast->deint_id) {
276  case DEINT_ID_INT4:
277  if (ast->coded_framesize > ast->audio_framesize ||
278  sub_packet_h <= 1 ||
279  ast->coded_framesize * (uint64_t)sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
280  return AVERROR_INVALIDDATA;
281  if (ast->coded_framesize * (uint64_t)sub_packet_h != 2*ast->audio_framesize) {
282  avpriv_request_sample(s, "mismatching interleaver parameters");
283  return AVERROR_INVALIDDATA;
284  }
285  break;
286  case DEINT_ID_GENR:
287  if (ast->sub_packet_size <= 0 ||
288  ast->sub_packet_size > ast->audio_framesize)
289  return AVERROR_INVALIDDATA;
290  if (ast->audio_framesize % ast->sub_packet_size)
291  return AVERROR_INVALIDDATA;
292  break;
293  case DEINT_ID_SIPR:
294  case DEINT_ID_INT0:
295  case DEINT_ID_VBRS:
296  case DEINT_ID_VBRF:
297  break;
298  default:
299  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
300  return AVERROR_INVALIDDATA;
301  }
302  if (ast->deint_id == DEINT_ID_INT4 ||
303  ast->deint_id == DEINT_ID_GENR ||
304  ast->deint_id == DEINT_ID_SIPR) {
305  if (st->codecpar->block_align <= 0 ||
306  ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
307  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
308  return AVERROR_INVALIDDATA;
309  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
310  return AVERROR(ENOMEM);
311  }
312 
313  if (read_all) {
314  avio_r8(pb);
315  avio_r8(pb);
316  avio_r8(pb);
317  rm_read_metadata(s, pb, 0);
318  }
319  }
320  return 0;
321 }
322 
324  AVStream *st, RMStream *rst,
325  unsigned int codec_data_size, const uint8_t *mime)
326 {
327  unsigned int v;
328  int size;
329  int64_t codec_pos;
330  int ret;
331 
332  if (codec_data_size > INT_MAX)
333  return AVERROR_INVALIDDATA;
334  if (codec_data_size == 0)
335  return 0;
336 
337  avpriv_set_pts_info(st, 64, 1, 1000);
338  codec_pos = avio_tell(pb);
339  v = avio_rb32(pb);
340 
341  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
342  /* ra type header */
343  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
344  return -1;
345  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
346  avio_seek(pb, -4, SEEK_CUR);
347  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
348  return ret;
349 
353  st->codecpar->codec_tag);
354  } else if(mime && !strcmp(mime, "logical-fileinfo")){
355  int stream_count, rule_count, property_count, i;
356  ff_free_stream(s, st);
357  if (avio_rb16(pb) != 0) {
358  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
359  goto skip;
360  }
361  stream_count = avio_rb16(pb);
362  avio_skip(pb, 6*stream_count);
363  rule_count = avio_rb16(pb);
364  avio_skip(pb, 2*rule_count);
365  property_count = avio_rb16(pb);
366  for(i=0; i<property_count; i++){
367  uint8_t name[128], val[128];
368  avio_rb32(pb);
369  if (avio_rb16(pb) != 0) {
370  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
371  goto skip; //FIXME skip just this one
372  }
373  get_str8(pb, name, sizeof(name));
374  switch(avio_rb32(pb)) {
375  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
376  av_dict_set(&s->metadata, name, val, 0);
377  break;
378  default: avio_skip(pb, avio_rb16(pb));
379  }
380  }
381  } else {
382  int fps;
383  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
384  fail1:
385  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
386  goto skip;
387  }
388  st->codecpar->codec_tag = avio_rl32(pb);
390  st->codecpar->codec_tag);
391  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
392  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
393  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
394  goto fail1;
395  st->codecpar->width = avio_rb16(pb);
396  st->codecpar->height = avio_rb16(pb);
397  avio_skip(pb, 2); // looks like bits per sample
398  avio_skip(pb, 4); // always zero?
401  fps = avio_rb32(pb);
402 
403  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
404  return ret;
405 
406  if (fps > 0) {
408  0x10000, fps, (1 << 30) - 1);
409 #if FF_API_R_FRAME_RATE
410  st->r_frame_rate = st->avg_frame_rate;
411 #endif
412  } else if (s->error_recognition & AV_EF_EXPLODE) {
413  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
414  return AVERROR_INVALIDDATA;
415  }
416  }
417 
418 skip:
419  /* skip codec info */
420  size = avio_tell(pb) - codec_pos;
421  if (codec_data_size >= size) {
422  avio_skip(pb, codec_data_size - size);
423  } else {
424  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
425  }
426 
427  return 0;
428 }
429 
430 /** this function assumes that the demuxer has already seeked to the start
431  * of the INDX chunk, and will bail out if not. */
433 {
434  AVIOContext *pb = s->pb;
435  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
436  AVStream *st;
437 
438  do {
439  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
440  return -1;
441  size = avio_rb32(pb);
442  if (size < 20)
443  return -1;
444  avio_skip(pb, 2);
445  n_pkts = avio_rb32(pb);
446  str_id = avio_rb16(pb);
447  next_off = avio_rb32(pb);
448  for (n = 0; n < s->nb_streams; n++)
449  if (s->streams[n]->id == str_id) {
450  st = s->streams[n];
451  break;
452  }
453  if (n == s->nb_streams) {
454  av_log(s, AV_LOG_ERROR,
455  "Invalid stream index %d for index at pos %"PRId64"\n",
456  str_id, avio_tell(pb));
457  goto skip;
458  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
459  av_log(s, AV_LOG_ERROR,
460  "Nr. of packets in packet index for stream index %d "
461  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
462  str_id, avio_size(pb), avio_tell(pb),
463  (avio_size(pb) - avio_tell(pb)) / 14);
464  goto skip;
465  }
466 
467  for (n = 0; n < n_pkts; n++) {
468  if (avio_feof(pb))
469  return AVERROR_INVALIDDATA;
470  avio_skip(pb, 2);
471  pts = avio_rb32(pb);
472  pos = avio_rb32(pb);
473  avio_skip(pb, 4); /* packet no. */
474 
475  av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
476  }
477 
478 skip:
479  if (next_off && avio_tell(pb) < next_off &&
480  avio_seek(pb, next_off, SEEK_SET) < 0) {
481  av_log(s, AV_LOG_ERROR,
482  "Non-linear index detected, not supported\n");
483  return -1;
484  }
485  } while (next_off);
486 
487  return 0;
488 }
489 
491 {
492  RMDemuxContext *rm = s->priv_data;
493  AVStream *st;
494 
495  rm->old_format = 1;
496  st = avformat_new_stream(s, NULL);
497  if (!st)
498  return -1;
500  if (!st->priv_data)
501  return AVERROR(ENOMEM);
502  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
503 }
504 
506  AVStream *st, char *mime)
507 {
508  int number_of_streams = avio_rb16(pb);
509  int number_of_mdpr;
510  int i, ret;
511  unsigned size2;
512  for (i = 0; i<number_of_streams; i++)
513  avio_rb16(pb);
514  number_of_mdpr = avio_rb16(pb);
515  if (number_of_mdpr != 1) {
516  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
517  }
518  for (i = 0; i < number_of_mdpr; i++) {
519  AVStream *st2;
520  if (i > 0) {
521  st2 = avformat_new_stream(s, NULL);
522  if (!st2) {
523  ret = AVERROR(ENOMEM);
524  return ret;
525  }
526  st2->id = st->id + (i<<16);
527  st2->codecpar->bit_rate = st->codecpar->bit_rate;
528  st2->start_time = st->start_time;
529  st2->duration = st->duration;
532  if (!st2->priv_data)
533  return AVERROR(ENOMEM);
534  } else
535  st2 = st;
536 
537  size2 = avio_rb32(pb);
538  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
539  size2, NULL);
540  if (ret < 0)
541  return ret;
542  }
543  return 0;
544 }
545 
547 {
548  RMDemuxContext *rm = s->priv_data;
549  AVStream *st;
550  AVIOContext *pb = s->pb;
551  unsigned int tag;
552  int tag_size;
553  unsigned int start_time, duration;
554  unsigned int data_off = 0, indx_off = 0;
555  char buf[128], mime[128];
556  int flags = 0;
557  int ret = -1;
558  unsigned size, v;
559  int64_t codec_pos;
560 
561  tag = avio_rl32(pb);
562  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
563  /* very old .ra format */
564  return rm_read_header_old(s);
565  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
566  return AVERROR(EIO);
567  }
568 
569  tag_size = avio_rb32(pb);
570  avio_skip(pb, tag_size - 8);
571 
572  for(;;) {
573  if (avio_feof(pb))
574  goto fail;
575  tag = avio_rl32(pb);
576  tag_size = avio_rb32(pb);
577  avio_rb16(pb);
578  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
579  av_fourcc2str(tag), tag_size);
580  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
581  goto fail;
582  switch(tag) {
583  case MKTAG('P', 'R', 'O', 'P'):
584  /* file header */
585  avio_rb32(pb); /* max bit rate */
586  avio_rb32(pb); /* avg bit rate */
587  avio_rb32(pb); /* max packet size */
588  avio_rb32(pb); /* avg packet size */
589  avio_rb32(pb); /* nb packets */
590  duration = avio_rb32(pb); /* duration */
591  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
592  avio_rb32(pb); /* preroll */
593  indx_off = avio_rb32(pb); /* index offset */
594  data_off = avio_rb32(pb); /* data offset */
595  avio_rb16(pb); /* nb streams */
596  flags = avio_rb16(pb); /* flags */
597  break;
598  case MKTAG('C', 'O', 'N', 'T'):
599  rm_read_metadata(s, pb, 1);
600  break;
601  case MKTAG('M', 'D', 'P', 'R'):
602  st = avformat_new_stream(s, NULL);
603  if (!st) {
604  ret = AVERROR(ENOMEM);
605  goto fail;
606  }
607  st->id = avio_rb16(pb);
608  avio_rb32(pb); /* max bit rate */
609  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
610  avio_rb32(pb); /* max packet size */
611  avio_rb32(pb); /* avg packet size */
612  start_time = avio_rb32(pb); /* start time */
613  avio_rb32(pb); /* preroll */
614  duration = avio_rb32(pb); /* duration */
615  st->start_time = start_time;
616  st->duration = duration;
617  if(duration>0)
619  get_str8(pb, buf, sizeof(buf)); /* desc */
620  get_str8(pb, mime, sizeof(mime)); /* mimetype */
623  if (!st->priv_data)
624  return AVERROR(ENOMEM);
625 
626  size = avio_rb32(pb);
627  codec_pos = avio_tell(pb);
628 
629  ffio_ensure_seekback(pb, 4);
630  v = avio_rb32(pb);
631  if (v == MKBETAG('M', 'L', 'T', 'I')) {
632  ret = rm_read_multi(s, s->pb, st, mime);
633  if (ret < 0)
634  goto fail;
635  avio_seek(pb, codec_pos + size, SEEK_SET);
636  } else {
637  avio_skip(pb, -4);
638  if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
639  size, mime) < 0)
640  goto fail;
641  }
642 
643  break;
644  case MKTAG('D', 'A', 'T', 'A'):
645  goto header_end;
646  default:
647  /* unknown tag: skip it */
648  avio_skip(pb, tag_size - 10);
649  break;
650  }
651  }
652  header_end:
653  rm->nb_packets = avio_rb32(pb); /* number of packets */
654  if (!rm->nb_packets && (flags & 4))
655  rm->nb_packets = 3600 * 25;
656  avio_rb32(pb); /* next data header */
657 
658  if (!data_off)
659  data_off = avio_tell(pb) - 18;
660  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
661  !(s->flags & AVFMT_FLAG_IGNIDX) &&
662  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
663  rm_read_index(s);
664  avio_seek(pb, data_off + 18, SEEK_SET);
665  }
666 
667  return 0;
668 
669 fail:
670  rm_read_close(s);
671  return ret;
672 }
673 
674 static int get_num(AVIOContext *pb, int *len)
675 {
676  int n, n1;
677 
678  n = avio_rb16(pb);
679  (*len)-=2;
680  n &= 0x7FFF;
681  if (n >= 0x4000) {
682  return n - 0x4000;
683  } else {
684  n1 = avio_rb16(pb);
685  (*len)-=2;
686  return (n << 16) | n1;
687  }
688 }
689 
690 /* multiple of 20 bytes for ra144 (ugly) */
691 #define RAW_PACKET_SIZE 1000
692 
693 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
694  RMDemuxContext *rm = s->priv_data;
695  AVIOContext *pb = s->pb;
696  AVStream *st;
697  uint32_t state=0xFFFFFFFF;
698 
699  while(!avio_feof(pb)){
700  int len, num, i;
701  int mlti_id;
702  *pos= avio_tell(pb) - 3;
703  if(rm->remaining_len > 0){
704  num= rm->current_stream;
705  mlti_id = 0;
706  len= rm->remaining_len;
707  *timestamp = AV_NOPTS_VALUE;
708  *flags= 0;
709  }else{
710  state= (state<<8) + avio_r8(pb);
711 
712  if(state == MKBETAG('I', 'N', 'D', 'X')){
713  int n_pkts;
714  int64_t expected_len;
715  len = avio_rb32(pb);
716  avio_skip(pb, 2);
717  n_pkts = avio_rb32(pb);
718  expected_len = 20 + n_pkts * 14LL;
719 
720  if (len == 20 && expected_len <= INT_MAX)
721  /* some files don't add index entries to chunk size... */
722  len = expected_len;
723  else if (len != expected_len)
725  "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
726  len, n_pkts, expected_len);
727  if(len < 14)
728  continue;
729  len -= 14; // we already read part of the index header
730  goto skip;
731  } else if (state == MKBETAG('D','A','T','A')) {
733  "DATA tag in middle of chunk, file may be broken.\n");
734  }
735 
736  if(state > (unsigned)0xFFFF || state <= 12)
737  continue;
738  len=state - 12;
739  state= 0xFFFFFFFF;
740 
741  num = avio_rb16(pb);
742  *timestamp = avio_rb32(pb);
743  mlti_id = (avio_r8(pb)>>1)-1<<16;
744  mlti_id = FFMAX(mlti_id, 0);
745  *flags = avio_r8(pb); /* flags */
746  }
747  for(i=0;i<s->nb_streams;i++) {
748  st = s->streams[i];
749  if (mlti_id + num == st->id)
750  break;
751  }
752  if (i == s->nb_streams) {
753 skip:
754  /* skip packet if unknown number */
755  avio_skip(pb, len);
756  rm->remaining_len = 0;
757  continue;
758  }
759  *stream_index= i;
760 
761  return len;
762  }
763  return -1;
764 }
765 
767  RMDemuxContext *rm, RMStream *vst,
768  AVPacket *pkt, int len, int *pseq,
769  int64_t *timestamp)
770 {
771  int hdr;
772  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
773  int type;
774  int ret;
775 
776  hdr = avio_r8(pb); len--;
777  type = hdr >> 6;
778 
779  if(type != 3){ // not frame as a part of packet
780  seq = avio_r8(pb); len--;
781  }
782  if(type != 1){ // not whole frame
783  len2 = get_num(pb, &len);
784  pos = get_num(pb, &len);
785  pic_num = avio_r8(pb); len--;
786  }
787  if(len<0) {
788  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
789  return -1;
790  }
791  rm->remaining_len = len;
792  if(type&1){ // frame, not slice
793  if(type == 3){ // frame as a part of packet
794  len= len2;
795  *timestamp = pos;
796  }
797  if(rm->remaining_len < len) {
798  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
799  return -1;
800  }
801  rm->remaining_len -= len;
802  if(av_new_packet(pkt, len + 9) < 0)
803  return AVERROR(EIO);
804  pkt->data[0] = 0;
805  AV_WL32(pkt->data + 1, 1);
806  AV_WL32(pkt->data + 5, 0);
807  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
808  av_packet_unref(pkt);
809  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
810  return ret < 0 ? ret : AVERROR(EIO);
811  }
812  return 0;
813  }
814  //now we have to deal with single slice
815 
816  *pseq = seq;
817  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
818  if (len2 > ffio_limit(pb, len2)) {
819  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
820  return AVERROR_INVALIDDATA;
821  }
822  vst->slices = ((hdr & 0x3F) << 1) + 1;
823  vst->videobufsize = len2 + 8*vst->slices + 1;
824  av_packet_unref(&vst->pkt); //FIXME this should be output.
825  if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
826  return AVERROR(ENOMEM);
827  memset(vst->pkt.data, 0, vst->pkt.size);
828  vst->videobufpos = 8*vst->slices + 1;
829  vst->cur_slice = 0;
830  vst->curpic_num = pic_num;
831  vst->pktpos = avio_tell(pb);
832  }
833  if(type == 2)
834  len = FFMIN(len, pos);
835 
836  if(++vst->cur_slice > vst->slices) {
837  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
838  return 1;
839  }
840  if(!vst->pkt.data)
841  return AVERROR(ENOMEM);
842  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
843  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
844  if(vst->videobufpos + len > vst->videobufsize) {
845  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
846  return 1;
847  }
848  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
849  return AVERROR(EIO);
850  vst->videobufpos += len;
851  rm->remaining_len-= len;
852 
853  if (type == 2 || vst->videobufpos == vst->videobufsize) {
854  vst->pkt.data[0] = vst->cur_slice-1;
855  *pkt= vst->pkt;
856  vst->pkt.data= NULL;
857  vst->pkt.size= 0;
858  vst->pkt.buf = NULL;
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  if ((ret = av_get_packet(pb, pkt, len)) < 0)
966  return ret;
967  rm_ac3_swap_bytes(st, pkt);
968  }
969  } else {
970  if ((ret = av_get_packet(pb, pkt, len)) < 0)
971  return ret;
972  }
973 
974  pkt->stream_index = st->index;
975 
976  pkt->pts = timestamp;
977  if (flags & 2)
978  pkt->flags |= AV_PKT_FLAG_KEY;
979 
980  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
981 }
982 
983 int
985  AVStream *st, RMStream *ast, AVPacket *pkt)
986 {
987  RMDemuxContext *rm = s->priv_data;
988 
989  av_assert0 (rm->audio_pkt_cnt > 0);
990 
991  if (ast->deint_id == DEINT_ID_VBRF ||
992  ast->deint_id == DEINT_ID_VBRS) {
993  int ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
994  if (ret < 0)
995  return ret;
996  } else {
997  int ret = av_new_packet(pkt, st->codecpar->block_align);
998  if (ret < 0)
999  return ret;
1000  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
1001  (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1002  st->codecpar->block_align);
1003  }
1004  rm->audio_pkt_cnt--;
1005  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1007  pkt->flags = AV_PKT_FLAG_KEY;
1008  } else
1009  pkt->flags = 0;
1010  pkt->stream_index = st->index;
1011 
1012  return rm->audio_pkt_cnt;
1013 }
1014 
1016 {
1017  RMDemuxContext *rm = s->priv_data;
1018  AVStream *st = NULL; // init to silence compiler warning
1019  int i, res, seq = 1;
1020  int64_t timestamp, pos, len;
1021  int flags;
1022 
1023  for (;;) {
1024  if (rm->audio_pkt_cnt) {
1025  // If there are queued audio packet return them first
1026  st = s->streams[rm->audio_stream_num];
1027  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1028  if(res < 0)
1029  return res;
1030  flags = 0;
1031  } else {
1032  if (rm->old_format) {
1033  RMStream *ast;
1034 
1035  st = s->streams[0];
1036  ast = st->priv_data;
1037  timestamp = AV_NOPTS_VALUE;
1038  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1039  ast->coded_framesize * (int64_t)ast->sub_packet_h / 2;
1040  if (len > INT_MAX)
1041  return AVERROR_INVALIDDATA;
1042  flags = (seq++ == 1) ? 2 : 0;
1043  pos = avio_tell(s->pb);
1044  } else {
1045  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1046  if (len > 0)
1047  st = s->streams[i];
1048  }
1049 
1050  if (avio_feof(s->pb))
1051  return AVERROR_EOF;
1052  if (len <= 0)
1053  return AVERROR(EIO);
1054 
1055  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1056  &seq, flags, timestamp);
1057  if (res < -1)
1058  return res;
1059  if((flags&2) && (seq&0x7F) == 1)
1060  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1061  if (res)
1062  continue;
1063  }
1064 
1065  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1066  || st->discard >= AVDISCARD_ALL){
1067  av_packet_unref(pkt);
1068  } else
1069  break;
1070  }
1071 
1072  return 0;
1073 }
1074 
1076 {
1077  int i;
1078 
1079  for (i=0;i<s->nb_streams;i++)
1081 
1082  return 0;
1083 }
1084 
1085 static int rm_probe(AVProbeData *p)
1086 {
1087  /* check file header */
1088  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1089  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1090  p->buf[4] == 0 && p->buf[5] == 0) ||
1091  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1092  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1093  return AVPROBE_SCORE_MAX;
1094  else
1095  return 0;
1096 }
1097 
1098 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1099  int64_t *ppos, int64_t pos_limit)
1100 {
1101  RMDemuxContext *rm = s->priv_data;
1102  int64_t pos, dts;
1103  int stream_index2, flags, len, h;
1104 
1105  pos = *ppos;
1106 
1107  if(rm->old_format)
1108  return AV_NOPTS_VALUE;
1109 
1110  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1111  return AV_NOPTS_VALUE;
1112 
1113  rm->remaining_len=0;
1114  for(;;){
1115  int seq=1;
1116  AVStream *st;
1117 
1118  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1119  if(len<0)
1120  return AV_NOPTS_VALUE;
1121 
1122  st = s->streams[stream_index2];
1123  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1124  h= avio_r8(s->pb); len--;
1125  if(!(h & 0x40)){
1126  seq = avio_r8(s->pb); len--;
1127  }
1128  }
1129 
1130  if((flags&2) && (seq&0x7F) == 1){
1131  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1132  flags, stream_index2, stream_index, dts, seq);
1133  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1134  if(stream_index2 == stream_index)
1135  break;
1136  }
1137 
1138  avio_skip(s->pb, len);
1139  }
1140  *ppos = pos;
1141  return dts;
1142 }
1143 
1144 static int rm_read_seek(AVFormatContext *s, int stream_index,
1145  int64_t pts, int flags)
1146 {
1147  RMDemuxContext *rm = s->priv_data;
1148 
1149  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1150  return -1;
1151  rm->audio_pkt_cnt = 0;
1152  return 0;
1153 }
1154 
1155 
1157  .name = "rm",
1158  .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1159  .priv_data_size = sizeof(RMDemuxContext),
1160  .read_probe = rm_probe,
1164  .read_timestamp = rm_read_dts,
1166 };
1167 
1169  .name = "rdt",
1170  .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1171  .priv_data_size = sizeof(RMDemuxContext),
1173  .flags = AVFMT_NOFILE,
1174 };
1175 
1176 static int ivr_probe(AVProbeData *p)
1177 {
1178  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1179  memcmp(p->buf, ".REC", 4))
1180  return 0;
1181 
1182  return AVPROBE_SCORE_MAX;
1183 }
1184 
1186 {
1187  unsigned tag, type, len, tlen, value;
1188  int i, j, n, count, nb_streams = 0, ret;
1189  uint8_t key[256], val[256];
1190  AVIOContext *pb = s->pb;
1191  AVStream *st;
1192  int64_t pos, offset=0, temp;
1193 
1194  pos = avio_tell(pb);
1195  tag = avio_rl32(pb);
1196  if (tag == MKTAG('.','R','1','M')) {
1197  if (avio_rb16(pb) != 1)
1198  return AVERROR_INVALIDDATA;
1199  if (avio_r8(pb) != 1)
1200  return AVERROR_INVALIDDATA;
1201  len = avio_rb32(pb);
1202  avio_skip(pb, len);
1203  avio_skip(pb, 5);
1204  temp = avio_rb64(pb);
1205  while (!avio_feof(pb) && temp) {
1206  offset = temp;
1207  temp = avio_rb64(pb);
1208  }
1209  if (offset <= 0)
1210  return AVERROR_INVALIDDATA;
1211  avio_skip(pb, offset - avio_tell(pb));
1212  if (avio_r8(pb) != 1)
1213  return AVERROR_INVALIDDATA;
1214  len = avio_rb32(pb);
1215  avio_skip(pb, len);
1216  if (avio_r8(pb) != 2)
1217  return AVERROR_INVALIDDATA;
1218  avio_skip(pb, 16);
1219  pos = avio_tell(pb);
1220  tag = avio_rl32(pb);
1221  }
1222 
1223  if (tag != MKTAG('.','R','E','C'))
1224  return AVERROR_INVALIDDATA;
1225 
1226  if (avio_r8(pb) != 0)
1227  return AVERROR_INVALIDDATA;
1228  count = avio_rb32(pb);
1229  for (i = 0; i < count; i++) {
1230  if (avio_feof(pb))
1231  return AVERROR_INVALIDDATA;
1232 
1233  type = avio_r8(pb);
1234  tlen = avio_rb32(pb);
1235  avio_get_str(pb, tlen, key, sizeof(key));
1236  len = avio_rb32(pb);
1237  if (type == 5) {
1238  avio_get_str(pb, len, val, sizeof(val));
1239  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1240  } else if (type == 4) {
1241  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1242  for (j = 0; j < len; j++) {
1243  if (avio_feof(pb))
1244  return AVERROR_INVALIDDATA;
1245  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1246  }
1247  av_log(s, AV_LOG_DEBUG, "'\n");
1248  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1249  nb_streams = value = avio_rb32(pb);
1250  } else if (len == 4 && type == 3) {
1251  value = avio_rb32(pb);
1252  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1253  } else {
1254  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1255  avio_skip(pb, len);
1256  }
1257  }
1258 
1259  for (n = 0; n < nb_streams; n++) {
1260  st = avformat_new_stream(s, NULL);
1261  if (!st)
1262  return AVERROR(ENOMEM);
1264  if (!st->priv_data)
1265  return AVERROR(ENOMEM);
1266 
1267  if (avio_r8(pb) != 1)
1268  return AVERROR_INVALIDDATA;
1269 
1270  count = avio_rb32(pb);
1271  for (i = 0; i < count; i++) {
1272  if (avio_feof(pb))
1273  return AVERROR_INVALIDDATA;
1274 
1275  type = avio_r8(pb);
1276  tlen = avio_rb32(pb);
1277  avio_get_str(pb, tlen, key, sizeof(key));
1278  len = avio_rb32(pb);
1279  if (type == 5) {
1280  avio_get_str(pb, len, val, sizeof(val));
1281  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1282  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1283  ret = ffio_ensure_seekback(pb, 4);
1284  if (ret < 0)
1285  return ret;
1286  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1287  ret = rm_read_multi(s, pb, st, NULL);
1288  } else {
1289  if (avio_feof(pb))
1290  return AVERROR_INVALIDDATA;
1291  avio_seek(pb, -4, SEEK_CUR);
1292  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1293  }
1294 
1295  if (ret < 0)
1296  return ret;
1297  } else if (type == 4) {
1298  int j;
1299 
1300  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1301  for (j = 0; j < len; j++) {
1302  if (avio_feof(pb))
1303  return AVERROR_INVALIDDATA;
1304  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1305  }
1306  av_log(s, AV_LOG_DEBUG, "'\n");
1307  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1308  st->duration = avio_rb32(pb);
1309  } else if (len == 4 && type == 3) {
1310  value = avio_rb32(pb);
1311  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1312  } else {
1313  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1314  avio_skip(pb, len);
1315  }
1316  }
1317  }
1318 
1319  if (avio_r8(pb) != 6)
1320  return AVERROR_INVALIDDATA;
1321  avio_skip(pb, 12);
1322  avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1323  if (avio_r8(pb) != 8)
1324  return AVERROR_INVALIDDATA;
1325  avio_skip(pb, 8);
1326 
1327  return 0;
1328 }
1329 
1331 {
1332  RMDemuxContext *rm = s->priv_data;
1333  int ret = AVERROR_EOF, opcode;
1334  AVIOContext *pb = s->pb;
1335  unsigned size, index;
1336  int64_t pos, pts;
1337 
1338  if (avio_feof(pb) || rm->data_end)
1339  return AVERROR_EOF;
1340 
1341  pos = avio_tell(pb);
1342 
1343  for (;;) {
1344  if (rm->audio_pkt_cnt) {
1345  // If there are queued audio packet return them first
1346  AVStream *st;
1347 
1348  st = s->streams[rm->audio_stream_num];
1349  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1350  if (ret < 0) {
1351  return ret;
1352  }
1353  } else {
1354  if (rm->remaining_len) {
1355  avio_skip(pb, rm->remaining_len);
1356  rm->remaining_len = 0;
1357  }
1358 
1359  if (avio_feof(pb))
1360  return AVERROR_EOF;
1361 
1362  opcode = avio_r8(pb);
1363  if (opcode == 2) {
1364  AVStream *st;
1365  int seq = 1;
1366 
1367  pts = avio_rb32(pb);
1368  index = avio_rb16(pb);
1369  if (index >= s->nb_streams)
1370  return AVERROR_INVALIDDATA;
1371 
1372  avio_skip(pb, 4);
1373  size = avio_rb32(pb);
1374  avio_skip(pb, 4);
1375 
1376  if (size < 1 || size > INT_MAX/4) {
1377  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1378  return AVERROR_INVALIDDATA;
1379  }
1380 
1381  st = s->streams[index];
1382  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1383  &seq, 0, pts);
1384  if (ret < -1) {
1385  return ret;
1386  } else if (ret) {
1387  continue;
1388  }
1389 
1390  pkt->pos = pos;
1391  pkt->pts = pts;
1392  pkt->stream_index = index;
1393  } else if (opcode == 7) {
1394  pos = avio_rb64(pb);
1395  if (!pos) {
1396  rm->data_end = 1;
1397  return AVERROR_EOF;
1398  }
1399  } else {
1400  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1401  return AVERROR(EIO);
1402  }
1403  }
1404 
1405  break;
1406  }
1407 
1408  return ret;
1409 }
1410 
1412  .name = "ivr",
1413  .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1414  .priv_data_size = sizeof(RMDemuxContext),
1415  .read_probe = ivr_probe,
1419  .extensions = "ivr",
1420 };
const char * name
Definition: avisynth_c.h:775
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1330
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:674
#define NULL
Definition: coverity.c:32
full parsing and interpolation of timestamps for frames not starting on a packet boundary ...
Definition: avformat.h:812
#define RAW_PACKET_SIZE
Definition: rmdec.c:691
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:829
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:334
static int rm_read_multi(AVFormatContext *s, AVIOContext *pb, AVStream *st, char *mime)
Definition: rmdec.c:505
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:1994
static struct @260 state
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:3067
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1098
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:1699
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:4756
#define avpriv_request_sample(...)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4152
int num
Numerator.
Definition: rational.h:59
int index
stream index in AVFormatContext
Definition: avformat.h:890
int size
Definition: avcodec.h:1680
Definition: rmdec.c:43
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:244
int cur_slice
Definition: rmdec.c:48
void * priv_data
Definition: avformat.h:904
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
int version
Definition: avisynth_c.h:766
static int rm_read_header(AVFormatContext *s)
Definition: rmdec.c:546
discard all
Definition: avcodec.h:830
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:774
This struct describes the properties of an encoded stream.
Definition: avcodec.h:4144
#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:1349
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:1462
Public dictionary API.
int ffio_limit(AVIOContext *s, int size)
Definition: utils.c:226
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:4218
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:789
static int ivr_probe(AVProbeData *p)
Definition: rmdec.c:1176
int id
Format-specific stream ID.
Definition: avformat.h:896
enum AVStreamParseType need_parsing
Definition: avformat.h:1081
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4383
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
int64_t duration
Definition: movenc.c:63
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1460
uint8_t * data
Definition: avcodec.h:1679
static int flags
Definition: log.c:57
uint32_t tag
Definition: movenc.c:1414
#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:292
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:432
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:856
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:556
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:766
static void get_str8(AVIOContext *pb, char *buf, int buf_size)
Definition: rmdec.c:85
full parsing and repack with timestamp and position generation by parser for raw this assumes that ea...
Definition: avformat.h:814
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4254
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:636
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:4181
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1711
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:827
#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:1567
static int rm_read_close(AVFormatContext *s)
Definition: rmdec.c:1075
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:758
#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:181
const char * r
Definition: vf_curves.c:111
#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:4148
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1662
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:693
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int64_t pktpos
first slice position in file
Definition: rmdec.c:49
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:970
#define FFMAX(a, b)
Definition: common.h:94
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:113
#define fail()
Definition: checkasm.h:109
int data_end
Definition: rmdec.c:66
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1685
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4170
Only parse headers, do not repack.
Definition: avformat.h:811
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:627
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:463
common internal API header
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1405
AVPacket pkt
place to store merged video frame / reordered audio data
Definition: rmdec.c:44
int block_align
Audio only.
Definition: avcodec.h:4269
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:261
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:4310
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
AVInputFormat ff_rm_demuxer
Definition: rmdec.c:1156
int32_t
#define DEINT_ID_INT4
interleaving for 28.8
Definition: rmdec.c:38
#define AV_RL32
Definition: intreadwrite.h:146
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:3061
int n
Definition: avisynth_c.h:684
AVInputFormat ff_ivr_demuxer
Definition: rmdec.c:1411
static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: rmdec.c:1144
if(ret< 0)
Definition: vf_mcdeint.c:279
int sub_packet_cnt
Definition: rmdec.c:52
#define FF_ARRAY_ELEMS(a)
int coded_framesize
Descrambling parameters from container.
Definition: rmdec.c:53
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:528
int audio_framesize
Definition: rmdec.c:54
Stream structure.
Definition: avformat.h:889
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:90
#define DEINT_ID_SIPR
interleaving for Sipro
Definition: rmdec.c:39
AVIOContext * pb
I/O context.
Definition: avformat.h:1391
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:618
static int rm_probe(AVProbeData *p)
Definition: rmdec.c:1085
void * buf
Definition: avisynth_c.h:690
int ff_rm_parse_packet(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int len, AVPacket *pkt, int *seq, int flags, int64_t timestamp)
Parse one rm-stream packet from the input bytestream.
Definition: rmdec.c: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:91
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:323
int current_stream
Definition: rmdec.c:62
int old_format
Definition: rmdec.c:61
This structure contains the data a format has to probe a file.
Definition: avformat.h:461
int audio_pkt_cnt
Output packet counter.
Definition: rmdec.c:65
int nb_packets
Definition: rmdec.c:60
static int64_t pts
Global timestamp for the audio frames.
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AVInputFormat ff_rdt_demuxer
Definition: rmdec.c:1168
void ff_rm_free_rmstream(RMStream *rms)
Definition: rmdec.c:122
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:973
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:946
int sample_rate
Audio only.
Definition: avcodec.h:4262
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:473
full parsing and repack
Definition: avformat.h:810
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:478
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:936
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
Definition: avformat.h:1594
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:3251
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:984
int den
Denominator.
Definition: rational.h:60
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:490
#define MKBETAG(a, b, c, d)
Definition: common.h:343
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:777
int slices
Definition: rmdec.c:48
int len
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1015
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all)
Definition: rmdec.c:127
void * priv_data
Format private data.
Definition: avformat.h:1377
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:4166
int channels
Audio only.
Definition: avcodec.h:4258
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1444
#define av_freep(p)
void INT64 INT64 count
Definition: avisynth_c.h:690
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:664
int64_t audiotimestamp
Audio descrambling matrix parameters.
Definition: rmdec.c:51
AVCodecParameters * codecpar
Definition: avformat.h:1252
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:814
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:356
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:4156
#define FFSWAP(type, a, b)
Definition: common.h:99
int stream_index
Definition: avcodec.h:1681
int videobufsize
current assembled frame size
Definition: rmdec.c:45
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:342
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:952
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1108
int sub_packet_lengths[16]
Audio frame size from container.
Definition: rmdec.c:55
This structure stores compressed data.
Definition: avcodec.h:1656
static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
Definition: rmdec.c:101
static int ivr_read_header(AVFormatContext *s)
Definition: rmdec.c:1185
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1672
#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:2120
int sub_packet_size
Definition: rmdec.c:53
#define AV_WL32(p, v)
Definition: intreadwrite.h:431