FFmpeg
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"
26 #include "libavutil/internal.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/mem.h"
30 #include "avformat.h"
31 #include "avio_internal.h"
32 #include "demux.h"
33 #include "internal.h"
34 #include "rmsipr.h"
35 #include "rm.h"
36 
37 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
38 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
39 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
40 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
41 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
42 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
43 
44 struct RMStream {
45  AVPacket pkt; ///< place to store merged video frame / reordered audio data
46  int videobufsize; ///< current assembled frame size
47  int videobufpos; ///< position for the next slice in the video buffer
48  int curpic_num; ///< picture number of current frame
50  int64_t pktpos; ///< first slice position in file
51  /// Audio descrambling matrix parameters
52  int64_t audiotimestamp; ///< Audio packet timestamp
53  int sub_packet_cnt; // Subpacket counter, used while reading
54  int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
55  int audio_framesize; ///< Audio frame size from container
56  int sub_packet_lengths[16]; ///< Length of each subpacket
57  int32_t deint_id; ///< deinterleaver used in audio stream
58 };
59 
60 typedef struct RMDemuxContext {
65  int audio_stream_num; ///< Stream number for audio packets
66  int audio_pkt_cnt; ///< Output packet counter
67  int data_end;
69 
70 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
71 {
72  int read = avio_get_str(pb, len, buf, buf_size);
73 
74  if (read > 0)
75  avio_skip(pb, len - read);
76 }
77 
78 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
79 {
80  get_strl(pb, buf, buf_size, avio_r8(pb));
81 }
82 
84 {
85  if (size >= 1<<24) {
86  av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
87  return -1;
88  }
89  return ff_get_extradata(s, par, pb, size);
90 }
91 
92 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
93 {
94  char buf[1024];
95  int i;
96 
97  for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
98  int len = wide ? avio_rb16(pb) : avio_r8(pb);
99  if (len > 0) {
100  get_strl(pb, buf, sizeof(buf), len);
101  av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
102  }
103  }
104 }
105 
107 {
108  RMStream *rms = av_mallocz(sizeof(RMStream));
109  if (!rms)
110  return NULL;
111  rms->curpic_num = -1;
112  return rms;
113 }
114 
116 {
117  if (!rms)
118  return;
119 
120  av_packet_unref(&rms->pkt);
121 }
122 
124  AVStream *st, RMStream *ast, int read_all)
125 {
126  FFStream *const sti = ffstream(st);
127  char buf[256];
128  uint32_t version;
129  int ret;
130 
131  /* ra type header */
132  version = avio_rb16(pb); /* version */
133  if (version == 3) {
134  unsigned bytes_per_minute;
135  int header_size = avio_rb16(pb);
136  int64_t startpos = avio_tell(pb);
137  avio_skip(pb, 8);
138  bytes_per_minute = avio_rb16(pb);
139  avio_skip(pb, 4);
140  rm_read_metadata(s, pb, 0);
141  if ((startpos + header_size) >= avio_tell(pb) + 2) {
142  // fourcc (should always be "lpcJ")
143  avio_r8(pb);
144  get_str8(pb, buf, sizeof(buf));
145  }
146  // Skip extra header crap (this should never happen)
147  if ((startpos + header_size) > avio_tell(pb))
148  avio_skip(pb, header_size + startpos - avio_tell(pb));
149  if (bytes_per_minute)
150  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
151  st->codecpar->sample_rate = 8000;
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  coded_framesize = avio_rb32(pb); /* coded frame size */
168  if (coded_framesize < 0)
169  return AVERROR_INVALIDDATA;
170  ast->coded_framesize = coded_framesize;
171 
172  avio_rb32(pb); /* ??? */
173  bytes_per_minute = avio_rb32(pb);
174  if (version == 4) {
175  if (bytes_per_minute)
176  st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
177  }
178  avio_rb32(pb); /* ??? */
179  ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
180  st->codecpar->block_align= avio_rb16(pb); /* frame size */
181  ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
182  avio_rb16(pb); /* ??? */
183  if (version == 5) {
184  avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
185  }
186  st->codecpar->sample_rate = avio_rb16(pb);
187  avio_rb32(pb);
189  if (version == 5) {
190  ast->deint_id = avio_rl32(pb);
191  avio_read(pb, buf, 4);
192  buf[4] = 0;
193  } else {
194  AV_WL32(buf, 0);
195  get_str8(pb, buf, sizeof(buf)); /* desc */
196  ast->deint_id = AV_RL32(buf);
197  get_str8(pb, buf, sizeof(buf)); /* desc */
198  }
200  st->codecpar->codec_tag = AV_RL32(buf);
202  st->codecpar->codec_tag);
203 
204  switch (st->codecpar->codec_id) {
205  case AV_CODEC_ID_AC3:
207  break;
208  case AV_CODEC_ID_RA_288:
209  st->codecpar->extradata_size= 0;
210  av_freep(&st->codecpar->extradata);
212  st->codecpar->block_align = coded_framesize;
213  break;
214  case AV_CODEC_ID_COOK:
216  case AV_CODEC_ID_ATRAC3:
217  case AV_CODEC_ID_SIPR:
218  if (read_all) {
219  codecdata_length = 0;
220  } else {
221  avio_rb16(pb); avio_r8(pb);
222  if (version == 5)
223  avio_r8(pb);
224  codecdata_length = avio_rb32(pb);
225  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
226  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
227  return -1;
228  }
229  }
230 
232  if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
233  if (flavor > 3) {
234  av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
235  flavor);
236  return -1;
237  }
238  st->codecpar->block_align = ff_sipr_subpk_size[flavor];
240  } else {
241  if(sub_packet_size <= 0){
242  av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
243  return -1;
244  }
246  }
247  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
248  return ret;
249 
250  break;
251  case AV_CODEC_ID_AAC:
252  avio_rb16(pb); avio_r8(pb);
253  if (version == 5)
254  avio_r8(pb);
255  codecdata_length = avio_rb32(pb);
256  if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
257  av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
258  return -1;
259  }
260  if (codecdata_length >= 1) {
261  avio_r8(pb);
262  if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
263  return ret;
264  }
265  break;
266  }
267  switch (ast->deint_id) {
268  case DEINT_ID_INT4:
269  if (ast->coded_framesize > ast->audio_framesize ||
270  sub_packet_h <= 1 ||
271  ast->coded_framesize * (uint64_t)sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
272  return AVERROR_INVALIDDATA;
273  if (ast->coded_framesize * (uint64_t)sub_packet_h != 2*ast->audio_framesize) {
274  avpriv_request_sample(s, "mismatching interleaver parameters");
275  return AVERROR_INVALIDDATA;
276  }
277  break;
278  case DEINT_ID_GENR:
279  if (ast->sub_packet_size <= 0 ||
280  ast->sub_packet_size > ast->audio_framesize)
281  return AVERROR_INVALIDDATA;
282  if (ast->audio_framesize % ast->sub_packet_size)
283  return AVERROR_INVALIDDATA;
284  break;
285  case DEINT_ID_SIPR:
286  case DEINT_ID_INT0:
287  case DEINT_ID_VBRS:
288  case DEINT_ID_VBRF:
289  break;
290  default:
291  av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
292  return AVERROR_INVALIDDATA;
293  }
294  if (ast->deint_id == DEINT_ID_INT4 ||
295  ast->deint_id == DEINT_ID_GENR ||
296  ast->deint_id == DEINT_ID_SIPR) {
297  if (st->codecpar->block_align <= 0 ||
298  ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
299  ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
300  return AVERROR_INVALIDDATA;
301  if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
302  return AVERROR(ENOMEM);
303  }
304 
305  if (read_all) {
306  avio_r8(pb);
307  avio_r8(pb);
308  avio_r8(pb);
309  rm_read_metadata(s, pb, 0);
310  }
311  }
312  return 0;
313 }
314 
316  AVStream *st, RMStream *rst,
317  unsigned int codec_data_size, const uint8_t *mime)
318 {
319  unsigned int v;
320  int size;
321  int64_t codec_pos;
322  int ret;
323 
324  if (codec_data_size > INT_MAX)
325  return AVERROR_INVALIDDATA;
326  if (codec_data_size == 0)
327  return 0;
328 
329  // Duplicate tags
332  return AVERROR_INVALIDDATA;
333 
334  avpriv_set_pts_info(st, 64, 1, 1000);
335  codec_pos = avio_tell(pb);
336  v = avio_rb32(pb);
337 
338  if (v == MKTAG(0xfd, 'a', 'r', '.')) {
339  /* ra type header */
340  if (rm_read_audio_stream_info(s, pb, st, rst, 0))
341  return -1;
342  } else if (v == MKBETAG('L', 'S', 'D', ':')) {
343  avio_seek(pb, -4, SEEK_CUR);
344  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
345  return ret;
346 
350  st->codecpar->codec_tag);
351  } else if(mime && !strcmp(mime, "logical-fileinfo")){
352  int stream_count, rule_count, property_count, i;
353  ff_remove_stream(s, st);
354  if (avio_rb16(pb) != 0) {
355  av_log(s, AV_LOG_WARNING, "Unsupported version\n");
356  goto skip;
357  }
358  stream_count = avio_rb16(pb);
359  avio_skip(pb, 6*stream_count);
360  rule_count = avio_rb16(pb);
361  avio_skip(pb, 2*rule_count);
362  property_count = avio_rb16(pb);
363  for(i=0; i<property_count; i++){
364  uint8_t name[128], val[128];
365  avio_rb32(pb);
366  if (avio_rb16(pb) != 0) {
367  av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
368  goto skip; //FIXME skip just this one
369  }
370  get_str8(pb, name, sizeof(name));
371  switch(avio_rb32(pb)) {
372  case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
373  av_dict_set(&s->metadata, name, val, 0);
374  break;
375  default: avio_skip(pb, avio_rb16(pb));
376  }
377  }
378  } else {
379  int fps;
380  if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
381  fail1:
382  av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
383  goto skip;
384  }
385  st->codecpar->codec_tag = avio_rl32(pb);
387  st->codecpar->codec_tag);
388  av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
389  st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
390  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
391  goto fail1;
392  st->codecpar->width = avio_rb16(pb);
393  st->codecpar->height = avio_rb16(pb);
394  avio_skip(pb, 2); // looks like bits per sample
395  avio_skip(pb, 4); // always zero?
398  fps = avio_rb32(pb);
399 
400  if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
401  return ret;
402 
403  if (fps > 0) {
405  0x10000, fps, (1 << 30) - 1);
406 #if FF_API_R_FRAME_RATE
407  st->r_frame_rate = st->avg_frame_rate;
408 #endif
409  } else if (s->error_recognition & AV_EF_EXPLODE) {
410  av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
411  return AVERROR_INVALIDDATA;
412  }
413  }
414 
415 skip:
416  /* skip codec info */
417  size = avio_tell(pb) - codec_pos;
418  if (codec_data_size >= size) {
419  avio_skip(pb, codec_data_size - size);
420  } else {
421  av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
422  }
423 
424  return 0;
425 }
426 
427 /** this function assumes that the demuxer has already seeked to the start
428  * of the INDX chunk, and will bail out if not. */
430 {
431  AVIOContext *pb = s->pb;
432  unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
433  AVStream *st;
434 
435  do {
436  if (avio_rl32(pb) != MKTAG('I','N','D','X'))
437  return -1;
438  size = avio_rb32(pb);
439  if (size < 20)
440  return -1;
441  avio_skip(pb, 2);
442  n_pkts = avio_rb32(pb);
443  str_id = avio_rb16(pb);
444  next_off = avio_rb32(pb);
445  for (n = 0; n < s->nb_streams; n++)
446  if (s->streams[n]->id == str_id) {
447  st = s->streams[n];
448  break;
449  }
450  if (n == s->nb_streams) {
452  "Invalid stream index %d for index at pos %"PRId64"\n",
453  str_id, avio_tell(pb));
454  goto skip;
455  } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
457  "Nr. of packets in packet index for stream index %d "
458  "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
459  str_id, avio_size(pb), avio_tell(pb),
460  (avio_size(pb) - avio_tell(pb)) / 14);
461  goto skip;
462  }
463 
464  for (n = 0; n < n_pkts; n++) {
465  if (avio_feof(pb))
466  return AVERROR_INVALIDDATA;
467  avio_skip(pb, 2);
468  pts = avio_rb32(pb);
469  pos = avio_rb32(pb);
470  avio_skip(pb, 4); /* packet no. */
471 
473  }
474 
475 skip:
476  if (next_off && avio_tell(pb) < next_off &&
477  avio_seek(pb, next_off, SEEK_SET) < 0) {
479  "Non-linear index detected, not supported\n");
480  return -1;
481  }
482  } while (next_off);
483 
484  return 0;
485 }
486 
488 {
489  RMDemuxContext *rm = s->priv_data;
490  AVStream *st;
491 
492  rm->old_format = 1;
493  st = avformat_new_stream(s, NULL);
494  if (!st)
495  return -1;
497  if (!st->priv_data)
498  return AVERROR(ENOMEM);
499  return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
500 }
501 
503  AVStream *st, char *mime)
504 {
505  int number_of_streams = avio_rb16(pb);
506  int number_of_mdpr;
507  int i, ret;
508  unsigned size2;
509  for (i = 0; i<number_of_streams; i++)
510  avio_rb16(pb);
511  number_of_mdpr = avio_rb16(pb);
512  if (number_of_mdpr != 1) {
513  avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
514  }
515  for (i = 0; i < number_of_mdpr; i++) {
516  AVStream *st2;
517  if (i > 0) {
518  st2 = avformat_new_stream(s, NULL);
519  if (!st2) {
520  ret = AVERROR(ENOMEM);
521  return ret;
522  }
523  st2->id = st->id + (i<<16);
524  st2->codecpar->bit_rate = st->codecpar->bit_rate;
525  st2->start_time = st->start_time;
526  st2->duration = st->duration;
529  if (!st2->priv_data)
530  return AVERROR(ENOMEM);
531  } else
532  st2 = st;
533 
534  size2 = avio_rb32(pb);
535  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
536  size2, NULL);
537  if (ret < 0)
538  return ret;
539  }
540  return 0;
541 }
542 
544 {
545  RMDemuxContext *rm = s->priv_data;
546  AVStream *st;
547  AVIOContext *pb = s->pb;
548  unsigned int tag;
549  int tag_size;
550  unsigned int start_time, duration;
551  unsigned int data_off = 0, indx_off = 0;
552  char buf[128], mime[128];
553  int flags = 0;
554  int ret;
555  unsigned size, v;
556  int64_t codec_pos;
557 
558  tag = avio_rl32(pb);
559  if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
560  /* very old .ra format */
561  return rm_read_header_old(s);
562  } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
563  return AVERROR(EIO);
564  }
565 
566  tag_size = avio_rb32(pb);
567  if (tag_size < 0)
568  return AVERROR_INVALIDDATA;
569  avio_skip(pb, tag_size - 8);
570 
571  for(;;) {
572  if (avio_feof(pb))
573  return AVERROR_INVALIDDATA;
574  tag = avio_rl32(pb);
575  tag_size = avio_rb32(pb);
576  avio_rb16(pb);
577  av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
578  av_fourcc2str(tag), tag_size);
579  if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
580  return AVERROR_INVALIDDATA;
581  switch(tag) {
582  case MKTAG('P', 'R', 'O', 'P'):
583  /* file header */
584  avio_rb32(pb); /* max bit rate */
585  avio_rb32(pb); /* avg bit rate */
586  avio_rb32(pb); /* max packet size */
587  avio_rb32(pb); /* avg packet size */
588  avio_rb32(pb); /* nb packets */
589  duration = avio_rb32(pb); /* duration */
590  s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
591  avio_rb32(pb); /* preroll */
592  indx_off = avio_rb32(pb); /* index offset */
593  data_off = avio_rb32(pb); /* data offset */
594  avio_rb16(pb); /* nb streams */
595  flags = avio_rb16(pb); /* flags */
596  break;
597  case MKTAG('C', 'O', 'N', 'T'):
598  rm_read_metadata(s, pb, 1);
599  break;
600  case MKTAG('M', 'D', 'P', 'R'):
601  st = avformat_new_stream(s, NULL);
602  if (!st)
603  return AVERROR(ENOMEM);
604  st->id = avio_rb16(pb);
605  avio_rb32(pb); /* max bit rate */
606  st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
607  avio_rb32(pb); /* max packet size */
608  avio_rb32(pb); /* avg packet size */
609  start_time = avio_rb32(pb); /* start time */
610  avio_rb32(pb); /* preroll */
611  duration = avio_rb32(pb); /* duration */
612  st->start_time = start_time;
613  st->duration = duration;
614  if(duration>0)
615  s->duration = AV_NOPTS_VALUE;
616  get_str8(pb, buf, sizeof(buf)); /* desc */
617  get_str8(pb, mime, sizeof(mime)); /* mimetype */
620  if (!st->priv_data)
621  return AVERROR(ENOMEM);
622 
623  size = avio_rb32(pb);
624  codec_pos = avio_tell(pb);
625 
626  ffio_ensure_seekback(pb, 4);
627  v = avio_rb32(pb);
628  if (v == MKBETAG('M', 'L', 'T', 'I')) {
629  ret = rm_read_multi(s, s->pb, st, mime);
630  if (ret < 0)
631  return ret;
632  avio_seek(pb, codec_pos + size, SEEK_SET);
633  } else {
634  avio_skip(pb, -4);
635  ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
636  size, mime);
637  if (ret < 0)
638  return ret;
639  }
640 
641  break;
642  case MKTAG('D', 'A', 'T', 'A'):
643  goto header_end;
644  default:
645  /* unknown tag: skip it */
646  avio_skip(pb, tag_size - 10);
647  break;
648  }
649  }
650  header_end:
651  rm->nb_packets = avio_rb32(pb); /* number of packets */
652  if (!rm->nb_packets && (flags & 4))
653  rm->nb_packets = 3600 * 25;
654  avio_rb32(pb); /* next data header */
655 
656  if (!data_off)
657  data_off = avio_tell(pb) - 18;
658  if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
659  !(s->flags & AVFMT_FLAG_IGNIDX) &&
660  avio_seek(pb, indx_off, SEEK_SET) >= 0) {
661  rm_read_index(s);
662  avio_seek(pb, data_off + 18, SEEK_SET);
663  }
664 
665  return 0;
666 }
667 
668 static int get_num(AVIOContext *pb, int *len)
669 {
670  int n, n1;
671 
672  n = avio_rb16(pb);
673  (*len)-=2;
674  n &= 0x7FFF;
675  if (n >= 0x4000) {
676  return n - 0x4000;
677  } else {
678  n1 = avio_rb16(pb);
679  (*len)-=2;
680  return (n << 16) | n1;
681  }
682 }
683 
684 /* multiple of 20 bytes for ra144 (ugly) */
685 #define RAW_PACKET_SIZE 1000
686 
687 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
688  RMDemuxContext *rm = s->priv_data;
689  AVIOContext *pb = s->pb;
690  AVStream *st;
691  uint32_t state=0xFFFFFFFF;
692 
693  while(!avio_feof(pb)){
694  int len, num, i;
695  int mlti_id;
696  *pos= avio_tell(pb) - 3;
697  if(rm->remaining_len > 0){
698  num= rm->current_stream;
699  mlti_id = 0;
700  len= rm->remaining_len;
701  *timestamp = AV_NOPTS_VALUE;
702  *flags= 0;
703  }else{
704  state= (state<<8) + avio_r8(pb);
705 
706  if(state == MKBETAG('I', 'N', 'D', 'X')){
707  int n_pkts;
708  int64_t expected_len;
709  len = avio_rb32(pb);
710  avio_skip(pb, 2);
711  n_pkts = avio_rb32(pb);
712  expected_len = 20 + n_pkts * 14LL;
713 
714  if (len == 20 && expected_len <= INT_MAX)
715  /* some files don't add index entries to chunk size... */
716  len = expected_len;
717  else if (len != expected_len)
719  "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
720  len, n_pkts, expected_len);
721  if(len < 14)
722  continue;
723  len -= 14; // we already read part of the index header
724  goto skip;
725  } else if (state == MKBETAG('D','A','T','A')) {
727  "DATA tag in middle of chunk, file may be broken.\n");
728  }
729 
730  if(state > (unsigned)0xFFFF || state <= 12)
731  continue;
732  len=state - 12;
733  state= 0xFFFFFFFF;
734 
735  num = avio_rb16(pb);
736  *timestamp = avio_rb32(pb);
737  mlti_id = (avio_r8(pb) >> 1) - 1;
738  mlti_id = FFMAX(mlti_id, 0) << 16;
739  *flags = avio_r8(pb); /* flags */
740  }
741  for(i=0;i<s->nb_streams;i++) {
742  st = s->streams[i];
743  if (mlti_id + num == st->id)
744  break;
745  }
746  if (i == s->nb_streams) {
747 skip:
748  /* skip packet if unknown number */
749  avio_skip(pb, len);
750  rm->remaining_len = 0;
751  continue;
752  }
753  *stream_index= i;
754 
755  return len;
756  }
757  return -1;
758 }
759 
761  RMDemuxContext *rm, RMStream *vst,
762  AVPacket *pkt, int len, int *pseq,
763  int64_t *timestamp)
764 {
765  int hdr;
766  int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
767  int type;
768  int ret;
769 
770  hdr = avio_r8(pb); len--;
771  type = hdr >> 6;
772 
773  if(type != 3){ // not frame as a part of packet
774  seq = avio_r8(pb); len--;
775  }
776  if(type != 1){ // not whole frame
777  len2 = get_num(pb, &len);
778  pos = get_num(pb, &len);
779  pic_num = avio_r8(pb); len--;
780  }
781  if(len<0) {
782  av_log(s, AV_LOG_ERROR, "Insufficient data\n");
783  return -1;
784  }
785  rm->remaining_len = len;
786  if(type&1){ // frame, not slice
787  if(type == 3){ // frame as a part of packet
788  len= len2;
789  *timestamp = pos;
790  }
791  if(rm->remaining_len < len) {
792  av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
793  return -1;
794  }
795  rm->remaining_len -= len;
796  if ((ret = av_new_packet(pkt, len + 9)) < 0)
797  return ret;
798  pkt->data[0] = 0;
799  AV_WL32(pkt->data + 1, 1);
800  AV_WL32(pkt->data + 5, 0);
801  if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
803  av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
804  return ret < 0 ? ret : AVERROR(EIO);
805  }
806  return 0;
807  }
808  //now we have to deal with single slice
809 
810  *pseq = seq;
811  if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
812  if (len2 > ffio_limit(pb, len2)) {
813  av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
814  return AVERROR_INVALIDDATA;
815  }
816  vst->slices = ((hdr & 0x3F) << 1) + 1;
817  vst->videobufsize = len2 + 8*vst->slices + 1;
818  av_packet_unref(&vst->pkt); //FIXME this should be output.
819  if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
820  return ret;
821  vst->videobufpos = 8*vst->slices + 1;
822  vst->cur_slice = 0;
823  vst->curpic_num = pic_num;
824  vst->pktpos = avio_tell(pb);
825  }
826  if(type == 2)
827  len = FFMIN(len, pos);
828 
829  if(++vst->cur_slice > vst->slices) {
830  av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
831  return 1;
832  }
833  if(!vst->pkt.data)
834  return AVERROR(ENOMEM);
835  AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
836  AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
837  if(vst->videobufpos + len > vst->videobufsize) {
838  av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
839  return 1;
840  }
841  if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
842  return AVERROR(EIO);
843  vst->videobufpos += len;
844  rm->remaining_len-= len;
845 
846  if (type == 2 || vst->videobufpos == vst->videobufsize) {
847  vst->pkt.data[0] = vst->cur_slice-1;
848  av_packet_move_ref(pkt, &vst->pkt);
849  if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
850  memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
851  vst->videobufpos - 1 - 8*vst->slices);
852  av_shrink_packet(pkt, vst->videobufpos + 8*(vst->cur_slice - vst->slices));
854  pkt->pos = vst->pktpos;
855  vst->slices = 0;
856  return 0;
857  }
858 
859  return 1;
860 }
861 
862 static inline void
864 {
865  uint8_t *ptr;
866  int j;
867 
868  if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
869  ptr = pkt->data;
870  for (j=0;j<pkt->size;j+=2) {
871  FFSWAP(int, ptr[0], ptr[1]);
872  ptr += 2;
873  }
874  }
875 }
876 
877 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
878  int ret = avio_read(pb, dst, n);
879  if (ret != n) {
880  if (ret >= 0) memset(dst + ret, 0, n - ret);
881  else memset(dst , 0, n);
882  av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
883  }
884  return ret;
885 }
886 
887 int
889  AVStream *st, RMStream *ast, int len, AVPacket *pkt,
890  int *seq, int flags, int64_t timestamp)
891 {
892  RMDemuxContext *rm = s->priv_data;
893  int ret;
894 
895  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
896  rm->current_stream= st->id;
897  ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
898  if(ret)
899  return ret < 0 ? ret : -1; //got partial frame or error
900  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
901  if ((ast->deint_id == DEINT_ID_GENR) ||
902  (ast->deint_id == DEINT_ID_INT4) ||
903  (ast->deint_id == DEINT_ID_SIPR)) {
904  int x;
905  int sps = ast->sub_packet_size;
906  int cfs = ast->coded_framesize;
907  int h = ast->sub_packet_h;
908  int y = ast->sub_packet_cnt;
909  int w = ast->audio_framesize;
910 
911  if (flags & 2)
912  y = ast->sub_packet_cnt = 0;
913  if (!y)
914  ast->audiotimestamp = timestamp;
915 
916  switch (ast->deint_id) {
917  case DEINT_ID_INT4:
918  for (x = 0; x < h/2; x++)
919  readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
920  break;
921  case DEINT_ID_GENR:
922  for (x = 0; x < w/sps; x++)
923  readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
924  break;
925  case DEINT_ID_SIPR:
926  readfull(s, pb, ast->pkt.data + y * w, w);
927  break;
928  }
929 
930  if (++(ast->sub_packet_cnt) < h)
931  return -1;
932  if (ast->deint_id == DEINT_ID_SIPR)
934 
935  ast->sub_packet_cnt = 0;
936  rm->audio_stream_num = st->index;
937  if (st->codecpar->block_align <= 0) {
938  av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
939  return AVERROR_INVALIDDATA;
940  }
941  rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
942  } else if ((ast->deint_id == DEINT_ID_VBRF) ||
943  (ast->deint_id == DEINT_ID_VBRS)) {
944  int x;
945  rm->audio_stream_num = st->index;
946  ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
947  if (ast->sub_packet_cnt) {
948  for (x = 0; x < ast->sub_packet_cnt; x++)
949  ast->sub_packet_lengths[x] = avio_rb16(pb);
950  rm->audio_pkt_cnt = ast->sub_packet_cnt;
951  ast->audiotimestamp = timestamp;
952  } else
953  return -1;
954  } else {
955  ret = av_get_packet(pb, pkt, len);
956  if (ret < 0)
957  return ret;
958  rm_ac3_swap_bytes(st, pkt);
959  }
960  } else {
961  ret = av_get_packet(pb, pkt, len);
962  if (ret < 0)
963  return ret;
964  }
965 
966  pkt->stream_index = st->index;
967 
968  pkt->pts = timestamp;
969  if (flags & 2)
971 
972  return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
973 }
974 
975 int
977  AVStream *st, RMStream *ast, AVPacket *pkt)
978 {
979  RMDemuxContext *rm = s->priv_data;
980  int ret;
981 
982  av_assert0 (rm->audio_pkt_cnt > 0);
983 
984  if (ast->deint_id == DEINT_ID_VBRF ||
985  ast->deint_id == DEINT_ID_VBRS) {
987  if (ret < 0)
988  return ret;
989  } else {
991  if (ret < 0)
992  return ret;
993  memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
995  st->codecpar->block_align);
996  }
997  rm->audio_pkt_cnt--;
998  if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1001  } else
1002  pkt->flags = 0;
1003  pkt->stream_index = st->index;
1004 
1005  return rm->audio_pkt_cnt;
1006 }
1007 
1009 {
1010  RMDemuxContext *rm = s->priv_data;
1011  AVStream *st = NULL; // init to silence compiler warning
1012  int i, res, seq = 1;
1013  int64_t timestamp, pos, len;
1014  int flags;
1015 
1016  for (;;) {
1017  if (rm->audio_pkt_cnt) {
1018  // If there are queued audio packet return them first
1019  st = s->streams[rm->audio_stream_num];
1020  res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1021  if(res < 0)
1022  return res;
1023  flags = 0;
1024  } else {
1025  if (rm->old_format) {
1026  RMStream *ast;
1027 
1028  st = s->streams[0];
1029  ast = st->priv_data;
1030  timestamp = AV_NOPTS_VALUE;
1031  len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1032  ast->coded_framesize * (int64_t)ast->sub_packet_h / 2;
1033  if (len > INT_MAX)
1034  return AVERROR_INVALIDDATA;
1035  flags = (seq++ == 1) ? 2 : 0;
1036  pos = avio_tell(s->pb);
1037  } else {
1038  len = rm_sync(s, &timestamp, &flags, &i, &pos);
1039  if (len > 0)
1040  st = s->streams[i];
1041  }
1042 
1043  if (avio_feof(s->pb))
1044  return AVERROR_EOF;
1045  if (len <= 0)
1046  return AVERROR(EIO);
1047 
1048  res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1049  &seq, flags, timestamp);
1050  if (res < -1)
1051  return res;
1052  if((flags&2) && (seq&0x7F) == 1)
1053  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1054  if (res)
1055  continue;
1056  }
1057 
1058  if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1059  || st->discard >= AVDISCARD_ALL){
1061  } else
1062  break;
1063  }
1064 
1065  return 0;
1066 }
1067 
1069 {
1070  int i;
1071 
1072  for (i=0;i<s->nb_streams;i++)
1073  ff_rm_free_rmstream(s->streams[i]->priv_data);
1074 
1075  return 0;
1076 }
1077 
1078 static int rm_probe(const AVProbeData *p)
1079 {
1080  /* check file header */
1081  if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1082  p->buf[2] == 'M' && p->buf[3] == 'F' &&
1083  p->buf[4] == 0 && p->buf[5] == 0) ||
1084  (p->buf[0] == '.' && p->buf[1] == 'r' &&
1085  p->buf[2] == 'a' && p->buf[3] == 0xfd))
1086  return AVPROBE_SCORE_MAX;
1087  else
1088  return 0;
1089 }
1090 
1091 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1092  int64_t *ppos, int64_t pos_limit)
1093 {
1094  RMDemuxContext *rm = s->priv_data;
1095  int64_t pos, dts;
1096  int stream_index2, flags, len, h;
1097 
1098  pos = *ppos;
1099 
1100  if(rm->old_format)
1101  return AV_NOPTS_VALUE;
1102 
1103  if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1104  return AV_NOPTS_VALUE;
1105 
1106  rm->remaining_len=0;
1107  for(;;){
1108  int seq=1;
1109  AVStream *st;
1110 
1111  len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1112  if(len<0)
1113  return AV_NOPTS_VALUE;
1114 
1115  st = s->streams[stream_index2];
1116  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1117  h= avio_r8(s->pb); len--;
1118  if(!(h & 0x40)){
1119  seq = avio_r8(s->pb); len--;
1120  }
1121  }
1122 
1123  if((flags&2) && (seq&0x7F) == 1){
1124  av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1125  flags, stream_index2, stream_index, dts, seq);
1126  av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1127  if(stream_index2 == stream_index)
1128  break;
1129  }
1130 
1131  avio_skip(s->pb, len);
1132  }
1133  *ppos = pos;
1134  return dts;
1135 }
1136 
1137 static int rm_read_seek(AVFormatContext *s, int stream_index,
1138  int64_t pts, int flags)
1139 {
1140  RMDemuxContext *rm = s->priv_data;
1141 
1142  if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1143  return -1;
1144  rm->audio_pkt_cnt = 0;
1145  return 0;
1146 }
1147 
1148 
1150  .p.name = "rm",
1151  .p.long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1152  .priv_data_size = sizeof(RMDemuxContext),
1153  .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
1154  .read_probe = rm_probe,
1160 };
1161 
1163  .p.name = "rdt",
1164  .p.long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1165  .p.flags = AVFMT_NOFILE,
1166  .priv_data_size = sizeof(RMDemuxContext),
1168 };
1169 
1170 static int ivr_probe(const AVProbeData *p)
1171 {
1172  if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1173  memcmp(p->buf, ".REC", 4))
1174  return 0;
1175 
1176  return AVPROBE_SCORE_MAX;
1177 }
1178 
1180 {
1181  unsigned tag, type, len, tlen, value;
1182  int i, j, n, count, nb_streams = 0, ret;
1183  uint8_t key[256], val[256];
1184  AVIOContext *pb = s->pb;
1185  AVStream *st;
1186  int64_t pos, offset=0, temp;
1187 
1188  pos = avio_tell(pb);
1189  tag = avio_rl32(pb);
1190  if (tag == MKTAG('.','R','1','M')) {
1191  if (avio_rb16(pb) != 1)
1192  return AVERROR_INVALIDDATA;
1193  if (avio_r8(pb) != 1)
1194  return AVERROR_INVALIDDATA;
1195  len = avio_rb32(pb);
1196  avio_skip(pb, len);
1197  avio_skip(pb, 5);
1198  temp = avio_rb64(pb);
1199  while (!avio_feof(pb) && temp) {
1200  offset = temp;
1201  temp = avio_rb64(pb);
1202  }
1203  if (offset <= 0)
1204  return AVERROR_INVALIDDATA;
1205  avio_skip(pb, offset - avio_tell(pb));
1206  if (avio_r8(pb) != 1)
1207  return AVERROR_INVALIDDATA;
1208  len = avio_rb32(pb);
1209  avio_skip(pb, len);
1210  if (avio_r8(pb) != 2)
1211  return AVERROR_INVALIDDATA;
1212  avio_skip(pb, 16);
1213  pos = avio_tell(pb);
1214  tag = avio_rl32(pb);
1215  }
1216 
1217  if (tag != MKTAG('.','R','E','C'))
1218  return AVERROR_INVALIDDATA;
1219 
1220  if (avio_r8(pb) != 0)
1221  return AVERROR_INVALIDDATA;
1222  count = avio_rb32(pb);
1223  for (i = 0; i < count; i++) {
1224  if (avio_feof(pb))
1225  return AVERROR_INVALIDDATA;
1226 
1227  type = avio_r8(pb);
1228  tlen = avio_rb32(pb);
1229  avio_get_str(pb, tlen, key, sizeof(key));
1230  len = avio_rb32(pb);
1231  if (type == 5) {
1232  avio_get_str(pb, len, val, sizeof(val));
1233  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1234  } else if (type == 4) {
1235  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1236  for (j = 0; j < len; j++) {
1237  if (avio_feof(pb))
1238  return AVERROR_INVALIDDATA;
1239  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1240  }
1241  av_log(s, AV_LOG_DEBUG, "'\n");
1242  } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1243  nb_streams = value = avio_rb32(pb);
1244  } else if (len == 4 && type == 3) {
1245  value = avio_rb32(pb);
1246  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1247  } else {
1248  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1249  avio_skip(pb, len);
1250  }
1251  }
1252 
1253  for (n = 0; n < nb_streams; n++) {
1254  if (!(st = avformat_new_stream(s, NULL)) ||
1255  !(st->priv_data = ff_rm_alloc_rmstream()))
1256  return AVERROR(ENOMEM);
1257 
1258  if (avio_r8(pb) != 1)
1259  return AVERROR_INVALIDDATA;
1260 
1261  count = avio_rb32(pb);
1262  for (i = 0; i < count; i++) {
1263  if (avio_feof(pb))
1264  return AVERROR_INVALIDDATA;
1265 
1266  type = avio_r8(pb);
1267  tlen = avio_rb32(pb);
1268  avio_get_str(pb, tlen, key, sizeof(key));
1269  len = avio_rb32(pb);
1270  if (type == 5) {
1271  avio_get_str(pb, len, val, sizeof(val));
1272  av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1273  } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1274  ret = ffio_ensure_seekback(pb, 4);
1275  if (ret < 0)
1276  return ret;
1277  if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1278  ret = rm_read_multi(s, pb, st, NULL);
1279  } else {
1280  if (avio_feof(pb))
1281  return AVERROR_INVALIDDATA;
1282  avio_seek(pb, -4, SEEK_CUR);
1283  ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1284  }
1285 
1286  if (ret < 0)
1287  return ret;
1288  } else if (type == 4) {
1289  int j;
1290 
1291  av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1292  for (j = 0; j < len; j++) {
1293  if (avio_feof(pb))
1294  return AVERROR_INVALIDDATA;
1295  av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1296  }
1297  av_log(s, AV_LOG_DEBUG, "'\n");
1298  } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1299  st->duration = avio_rb32(pb);
1300  } else if (len == 4 && type == 3) {
1301  value = avio_rb32(pb);
1302  av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1303  } else {
1304  av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1305  avio_skip(pb, len);
1306  }
1307  }
1308  }
1309 
1310  if (avio_r8(pb) != 6)
1311  return AVERROR_INVALIDDATA;
1312  avio_skip(pb, 12);
1313  avio_seek(pb, avio_rb64(pb) + pos, SEEK_SET);
1314  if (avio_r8(pb) != 8)
1315  return AVERROR_INVALIDDATA;
1316  avio_skip(pb, 8);
1317 
1318  return 0;
1319 }
1320 
1322 {
1323  RMDemuxContext *rm = s->priv_data;
1324  int ret = AVERROR_EOF, opcode;
1325  AVIOContext *pb = s->pb;
1326  unsigned size, index;
1327  int64_t pos, pts;
1328 
1329  if (avio_feof(pb) || rm->data_end)
1330  return AVERROR_EOF;
1331 
1332  pos = avio_tell(pb);
1333 
1334  for (;;) {
1335  if (rm->audio_pkt_cnt) {
1336  // If there are queued audio packet return them first
1337  AVStream *st;
1338 
1339  st = s->streams[rm->audio_stream_num];
1340  ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1341  if (ret < 0) {
1342  return ret;
1343  }
1344  } else {
1345  if (rm->remaining_len) {
1346  avio_skip(pb, rm->remaining_len);
1347  rm->remaining_len = 0;
1348  }
1349 
1350  if (avio_feof(pb))
1351  return AVERROR_EOF;
1352 
1353  opcode = avio_r8(pb);
1354  if (opcode == 2) {
1355  AVStream *st;
1356  int seq = 1;
1357 
1358  pts = avio_rb32(pb);
1359  index = avio_rb16(pb);
1360  if (index >= s->nb_streams)
1361  return AVERROR_INVALIDDATA;
1362 
1363  avio_skip(pb, 4);
1364  size = avio_rb32(pb);
1365  avio_skip(pb, 4);
1366 
1367  if (size < 1 || size > INT_MAX/4) {
1368  av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1369  return AVERROR_INVALIDDATA;
1370  }
1371 
1372  st = s->streams[index];
1373  ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1374  &seq, 0, pts);
1375  if (ret < -1) {
1376  return ret;
1377  } else if (ret) {
1378  continue;
1379  }
1380 
1381  pkt->pos = pos;
1382  pkt->pts = pts;
1383  pkt->stream_index = index;
1384  } else if (opcode == 7) {
1385  pos = avio_rb64(pb);
1386  if (!pos) {
1387  rm->data_end = 1;
1388  return AVERROR_EOF;
1389  }
1390  } else {
1391  av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1392  return AVERROR(EIO);
1393  }
1394  }
1395 
1396  break;
1397  }
1398 
1399  return ret;
1400 }
1401 
1403  .p.name = "ivr",
1404  .p.long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1405  .p.extensions = "ivr",
1406  .priv_data_size = sizeof(RMDemuxContext),
1407  .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
1408  .read_probe = ivr_probe,
1412 };
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: packet.c:427
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:69
ff_seek_frame_binary
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 FFInputFormat.read_timestamp().
Definition: seek.c:289
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
rm_read_index
static int rm_read_index(AVFormatContext *s)
this function assumes that the demuxer has already seeked to the start of the INDX chunk,...
Definition: rmdec.c:429
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
AV_CODEC_ID_AC3
@ AV_CODEC_ID_AC3
Definition: codec_id.h:443
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:51
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:424
ff_rm_reorder_sipr_data
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
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:47
AVFMT_FLAG_IGNIDX
#define AVFMT_FLAG_IGNIDX
Ignore index.
Definition: avformat.h:1408
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
rm_read_extradata
static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size)
Definition: rmdec.c:83
AVStream::priv_data
void * priv_data
Definition: avformat.h:768
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
AVStream::discard
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:814
RMStream::deint_id
int32_t deint_id
deinterleaver used in audio stream
Definition: rmdec.c:57
ff_rm_retrieve_cache
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:976
AV_CODEC_ID_RA_144
@ AV_CODEC_ID_RA_144
Definition: codec_id.h:425
rmsipr.h
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:524
AVStream::avg_frame_rate
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:832
RMStream::videobufpos
int videobufpos
position for the next slice in the video buffer
Definition: rmdec.c:47
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:59
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
DEINT_ID_SIPR
#define DEINT_ID_SIPR
interleaving for Sipro
Definition: rmdec.c:40
RMDemuxContext::data_end
int data_end
Definition: rmdec.c:67
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:313
DEINT_ID_VBRS
#define DEINT_ID_VBRS
VBR case for AAC.
Definition: rmdec.c:42
avio_size
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:323
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:579
RAW_PACKET_SIZE
#define RAW_PACKET_SIZE
Definition: rmdec.c:685
AVINDEX_KEYFRAME
#define AVINDEX_KEYFRAME
Definition: avformat.h:610
ff_get_extradata
int ff_get_extradata(void *logctx, 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: demux_utils.c:335
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:463
ff_remove_stream
void ff_remove_stream(AVFormatContext *s, AVStream *st)
Remove a stream from its AVFormatContext and free it.
Definition: avformat.c:114
RMStream::videobufsize
int videobufsize
current assembled frame size
Definition: rmdec.c:46
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: avformat.c:853
ffstream
static av_always_inline FFStream * ffstream(AVStream *st)
Definition: internal.h:417
readfull
static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n)
Definition: rmdec.c:877
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:151
av_shrink_packet
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
Definition: packet.c:113
av_add_index_entry
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: seek.c:121
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:143
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:494
val
static double val(void *priv, double ch)
Definition: aeval.c:78
RMStream
Definition: rmdec.c:44
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
pts
static int64_t pts
Definition: transcode_aac.c:644
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:802
av_reduce
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
AVRational::num
int num
Numerator.
Definition: rational.h:59
get_num
static int get_num(AVIOContext *pb, int *len)
Definition: rmdec.c:668
AV_CODEC_ID_ATRAC3
@ AV_CODEC_ID_ATRAC3
Definition: codec_id.h:471
ff_rm_metadata
const char *const ff_rm_metadata[4]
Definition: rm.c:24
AV_CODEC_ID_SIPR
@ AV_CODEC_ID_SIPR
Definition: codec_id.h:481
avassert.h
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:761
AV_LOG_TRACE
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:206
pkt
AVPacket * pkt
Definition: movenc.c:60
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
get_strl
static void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
Definition: rmdec.c:70
duration
int64_t duration
Definition: movenc.c:65
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_read_callback.c:42
rm_read_packet
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1008
rm_read_audio_stream_info
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all)
Definition: rmdec.c:123
RMStream::slices
int slices
Definition: rmdec.c:49
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:198
RMStream::audio_framesize
int audio_framesize
Audio frame size from container.
Definition: rmdec.c:55
av_new_packet
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: packet.c:98
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:553
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:453
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:134
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
rm_probe
static int rm_probe(const AVProbeData *p)
Definition: rmdec.c:1078
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
nb_streams
static int nb_streams
Definition: ffprobe.c:384
RMStream::pkt
AVPacket pkt
place to store merged video frame / reordered audio data
Definition: rmdec.c:45
RMStream::curpic_num
int curpic_num
picture number of current frame
Definition: rmdec.c:48
key
const char * key
Definition: hwcontext_opencl.c:189
AVMEDIA_TYPE_DATA
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
RMStream::pktpos
int64_t pktpos
first slice position in file
Definition: rmdec.c:50
if
if(ret)
Definition: filter_design.txt:179
FF_INFMT_FLAG_INIT_CLEANUP
#define FF_INFMT_FLAG_INIT_CLEANUP
For an FFInputFormat with this flag set read_close() needs to be called by the caller upon read_heade...
Definition: demux.h:35
ff_rm_parse_packet
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:888
FFStream::need_parsing
enum AVStreamParseType need_parsing
Definition: internal.h:386
RMStream::cur_slice
int cur_slice
Definition: rmdec.c:49
AVDISCARD_ALL
@ AVDISCARD_ALL
discard all
Definition: defs.h:219
AVFormatContext
Format I/O context.
Definition: avformat.h:1255
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:766
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:550
ivr_read_header
static int ivr_read_header(AVFormatContext *s)
Definition: rmdec.c:1179
NULL
#define NULL
Definition: coverity.c:32
ff_rm_codec_tags
const AVCodecTag ff_rm_codec_tags[]
Definition: rm.c:31
RMStream::sub_packet_size
int sub_packet_size
Definition: rmdec.c:54
ivr_read_packet
static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rmdec.c:1321
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:908
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:451
RMDemuxContext
Definition: rmdec.c:60
rm_read_multi
static int rm_read_multi(AVFormatContext *s, AVIOContext *pb, AVStream *st, char *mime)
Definition: rmdec.c:502
RMDemuxContext::remaining_len
int remaining_len
Definition: rmdec.c:64
DEINT_ID_GENR
#define DEINT_ID_GENR
interleaving for Cooker/ATRAC
Definition: rmdec.c:37
RMStream::sub_packet_h
int sub_packet_h
Definition: rmdec.c:54
rm_read_metadata
static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
Definition: rmdec.c:92
AVCodecParameters::ch_layout
AVChannelLayout ch_layout
Audio only.
Definition: codec_par.h:180
av_packet_move_ref
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: packet.c:484
index
int index
Definition: gxfenc.c:90
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:184
DEINT_ID_INT4
#define DEINT_ID_INT4
interleaving for 28.8
Definition: rmdec.c:39
ivr_probe
static int ivr_probe(const AVProbeData *p)
Definition: rmdec.c:1170
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:73
AV_CODEC_ID_AAC
@ AV_CODEC_ID_AAC
Definition: codec_id.h:442
RMDemuxContext::current_stream
int current_stream
Definition: rmdec.c:63
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:730
ff_rm_alloc_rmstream
RMStream * ff_rm_alloc_rmstream(void)
Definition: rmdec.c:106
AVDISCARD_NONKEY
@ AVDISCARD_NONKEY
discard all frames except keyframes
Definition: defs.h:218
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
AVPacket::size
int size
Definition: packet.h:525
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
ff_codec_get_id
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:133
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:261
AVChannelLayout
An AVChannelLayout holds information about the channel layout of audio data.
Definition: channel_layout.h:303
FFStream
Definition: internal.h:193
ff_rm_demuxer
const FFInputFormat ff_rm_demuxer
Definition: rmdec.c:1149
start_time
static int64_t start_time
Definition: ffplay.c:326
avio_get_str
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
Definition: aviobuf.c:866
size
int size
Definition: twinvq_data.h:10344
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
MKBETAG
#define MKBETAG(a, b, c, d)
Definition: macros.h:56
rm_read_header
static int rm_read_header(AVFormatContext *s)
Definition: rmdec.c:543
AVFMT_NOFILE
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:468
AVMEDIA_TYPE_UNKNOWN
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:200
FFInputFormat::p
AVInputFormat p
The public AVInputFormat.
Definition: demux.h:41
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:603
RMStream::sub_packet_lengths
int sub_packet_lengths[16]
Length of each subpacket.
Definition: rmdec.c:56
ffio_ensure_seekback
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
Definition: aviobuf.c:1023
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:530
version
version
Definition: libkvazaar.c:321
ff_ivr_demuxer
const FFInputFormat ff_ivr_demuxer
Definition: rmdec.c:1402
RMStream::sub_packet_cnt
int sub_packet_cnt
Definition: rmdec.c:53
ffio_limit
int ffio_limit(AVIOContext *s, int size)
Definition: aviobuf.c:1061
AV_CODEC_ID_RA_288
@ AV_CODEC_ID_RA_288
Definition: codec_id.h:426
rm_read_close
static int rm_read_close(AVFormatContext *s)
Definition: rmdec.c:1068
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:517
avio_internal.h
internal.h
AVCodecParameters::height
int height
Definition: codec_par.h:135
AV_TIME_BASE
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:191
DEINT_ID_VBRF
#define DEINT_ID_VBRF
VBR case for AAC.
Definition: rmdec.c:41
rm_sync
static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos)
Definition: rmdec.c:687
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
state
static struct @416 state
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:256
demux.h
len
int len
Definition: vorbis_enc_data.h:426
av_rescale
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
av_get_packet
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:91
tag
uint32_t tag
Definition: movenc.c:1788
AVStream::id
int id
Format-specific stream ID.
Definition: avformat.h:755
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:743
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:231
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
DEINT_ID_INT0
#define DEINT_ID_INT0
no interleaving needed
Definition: rmdec.c:38
RMDemuxContext::old_format
int old_format
Definition: rmdec.c:62
avio_rb16
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:746
sps
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
Definition: cbs_h264_syntax_template.c:260
AVSTREAM_PARSE_HEADERS
@ AVSTREAM_PARSE_HEADERS
Only parse headers, do not repack.
Definition: avformat.h:594
pos
unsigned int pos
Definition: spdifenc.c:414
avformat.h
dict.h
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
rm_ac3_swap_bytes
static void rm_ac3_swap_bytes(AVStream *st, AVPacket *pkt)
Definition: rmdec.c:863
ff_rm_free_rmstream
void ff_rm_free_rmstream(RMStream *rms)
Definition: rmdec.c:115
rm_read_dts
static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: rmdec.c:1091
AVStream::index
int index
stream index in AVFormatContext
Definition: avformat.h:749
RMStream::coded_framesize
int coded_framesize
Descrambling parameters from container.
Definition: rmdec.c:54
get_str8
static void get_str8(AVIOContext *pb, char *buf, int buf_size)
Definition: rmdec.c:78
channel_layout.h
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:41
ff_sipr_subpk_size
const unsigned char ff_sipr_subpk_size[4]
Definition: rmsipr.c:25
AVRational::den
int den
Denominator.
Definition: rational.h:60
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:612
temp
else temp
Definition: vf_mcdeint.c:263
AVStream::r_frame_rate
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:909
AVSTREAM_PARSE_FULL_RAW
@ AVSTREAM_PARSE_FULL_RAW
full parsing and repack with timestamp and position generation by parser for raw this assumes that ea...
Definition: avformat.h:597
AVPacket::stream_index
int stream_index
Definition: packet.h:526
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:318
rm_read_seek
static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: rmdec.c:1137
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
read_probe
static int read_probe(const AVProbeData *p)
Definition: cdg.c:30
RMStream::audiotimestamp
int64_t audiotimestamp
Audio descrambling matrix parameters.
Definition: rmdec.c:52
mem.h
ff_rm_read_mdpr_codecdata
int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *rst, unsigned int codec_data_size, const uint8_t *mime)
Read the MDPR chunk, which contains stream-specific codec initialization parameters.
Definition: rmdec.c:315
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
rm_assemble_video_frame
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:760
AV_CHANNEL_LAYOUT_MONO
#define AV_CHANNEL_LAYOUT_MONO
Definition: channel_layout.h:378
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:55
AVPacket
This structure stores compressed data.
Definition: packet.h:501
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
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:88
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:544
FFInputFormat
Definition: demux.h:37
ff_rdt_demuxer
const FFInputFormat ff_rdt_demuxer
Definition: rmdec.c:1162
int32_t
int32_t
Definition: audioconvert.c:56
AVSTREAM_PARSE_FULL
@ AVSTREAM_PARSE_FULL
full parsing and repack
Definition: avformat.h:593
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:474
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:97
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AV_CODEC_ID_COOK
@ AV_CODEC_ID_COOK
Definition: codec_id.h:460
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
rm.h
h
h
Definition: vp9dsp_template.c:2038
read_timestamp
static int64_t read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit, int64_t(*read_timestamp)(struct AVFormatContext *, int, int64_t *, int64_t))
Definition: seek.c:280
AVStream::start_time
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
Definition: avformat.h:792
AVSTREAM_PARSE_TIMESTAMPS
@ AVSTREAM_PARSE_TIMESTAMPS
full parsing and interpolation of timestamps for frames not starting on a packet boundary
Definition: avformat.h:595
rm_read_header_old
static int rm_read_header_old(AVFormatContext *s)
Definition: rmdec.c:487
RMDemuxContext::audio_pkt_cnt
int audio_pkt_cnt
Output packet counter.
Definition: rmdec.c:66
skip
static void BS_FUNC() skip(BSCTX *bc, unsigned int n)
Skip n bits in the buffer.
Definition: bitstream_template.h:375
RMDemuxContext::nb_packets
int nb_packets
Definition: rmdec.c:61
read
static uint32_t BS_FUNC() read(BSCTX *bc, unsigned int n)
Return n bits from the buffer, n has to be in the 0-32 range.
Definition: bitstream_template.h:231
av_fourcc2str
#define av_fourcc2str(fourcc)
Definition: avutil.h:345
RMDemuxContext::audio_stream_num
int audio_stream_num
Stream number for audio packets.
Definition: rmdec.c:65
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:346