aboutsummaryrefslogtreecommitdiffhomepage
path: root/libmpdemux/demux_real.c
blob: 64356ef73f2262b10c0b51c76faa70c7b6fe37d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
/*
    Real parser & demuxer
    
    (C) Alex Beregszaszi
    (C) 2005, 2006 Roberto Togni
    
    Based on FFmpeg's libav/rm.c.

Audio codecs: (supported by RealPlayer8 for Linux)
    DNET - RealAudio 3.0, really it's AC3 in swapped-byteorder
    SIPR - SiproLab's audio codec, ACELP decoder working with MPlayer,
	   needs fine-tuning too :)
    ATRC - RealAudio 8 (ATRAC3) - www.minidisc.org/atrac3_article.pdf,
           ACM decoder uploaded, needs some fine-tuning to work
	   -> RealAudio 8
    COOK/COKR - Real Cooker -> RealAudio G2

Video codecs: (supported by RealPlayer8 for Linux)
    RV10 - H.263 based, working with libavcodec's decoder
    RV20-RV40 - using RealPlayer's codec plugins
*/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"

#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "bswap.h"

#ifdef USE_LIBAVCODEC_SO
#include <ffmpeg/avcodec.h>
#elif defined(USE_LIBAVCODEC)
#include "libavcodec/avcodec.h"
#else
#define FF_INPUT_BUFFER_PADDING_SIZE 8
#endif

//#define mp_dbg(mod,lev, args... ) mp_msg_c((mod<<8)|lev, ## args )

#define MKTAG(a, b, c, d) (a | (b << 8) | (c << 16) | (d << 24))

#define MAX_STREAMS 32

static unsigned char sipr_swaps[38][2]={
    {0,63},{1,22},{2,44},{3,90},{5,81},{7,31},{8,86},{9,58},{10,36},{12,68},
    {13,39},{14,73},{15,53},{16,69},{17,57},{19,88},{20,34},{21,71},{24,46},
    {25,94},{26,54},{28,75},{29,50},{32,70},{33,92},{35,74},{38,85},{40,56},
    {42,87},{43,65},{45,59},{48,79},{49,93},{51,89},{55,95},{61,76},{67,83},
    {77,80} };

typedef struct {
    unsigned int	timestamp;
    int		offset;
//    int		packetno;
//    int		len; /* only filled by our index generator */
//    int		flags; /* only filled by our index generator */
} real_index_table_t;

typedef struct {
    /* for seeking */
    int		index_chunk_offset;
    real_index_table_t *index_table[MAX_STREAMS];
	
//    int		*index_table[MAX_STREAMS];
    int		index_table_size[MAX_STREAMS];
    int		index_malloc_size[MAX_STREAMS];
    int		data_chunk_offset;
    int		num_of_packets;
    int		current_packet;
	
// need for seek
    int		audio_need_keyframe;
    int		video_after_seek;

    int		current_apacket;
    int		current_vpacket;
    
    // timestamp correction:
    int64_t		kf_base;// timestamp of the prev. video keyframe
    unsigned int	kf_pts;	// timestamp of next video keyframe
    unsigned int	a_pts;	// previous audio timestamp
    double	v_pts;  // previous video timestamp
    unsigned long	duration;
    
    /* stream id table */
//    int		last_a_stream;
//    int 	a_streams[MAX_STREAMS];
//    int		last_v_stream;
//    int 	v_streams[MAX_STREAMS];

    /**
     * Used to demux multirate files
     */
    int is_multirate; ///< != 0 for multirate files
    int str_data_offset[MAX_STREAMS]; ///< Data chunk offset for every audio/video stream
    int audio_curpos; ///< Current file position for audio demuxing
    int video_curpos; ///< Current file position for video demuxing
    int a_num_of_packets; ///< Number of audio packets
    int v_num_of_packets; ///< Number of video packets
    int a_idx_ptr; ///< Audio index position pointer
    int v_idx_ptr; ///< Video index position pointer
    int a_bitrate; ///< Audio bitrate
    int v_bitrate; ///< Video bitrate
    int stream_switch; ///< Flag used to switch audio/video demuxing

   /**
    * Used to reorder audio data
    */
    int sub_packet_size[MAX_STREAMS]; ///< sub packet size, per stream
    int sub_packet_h[MAX_STREAMS]; ///< number of coded frames per block
    int coded_framesize[MAX_STREAMS]; ///< coded frame size, per stream
    int audiopk_size[MAX_STREAMS]; ///< audio packet size
    unsigned char *audio_buf; ///< place to store reordered audio data
    double *audio_timestamp; ///< timestamp for each audio packet
    int sub_packet_cnt; ///< number of subpacket already received
    int audio_filepos; ///< file position of first audio packet in block
} real_priv_t;

//! use at most 200 MB of memory for index, corresponds to around 25 million entries
#define MAX_INDEX_ENTRIES (200*1024*1024 / sizeof(real_index_table_t))

/* originally from FFmpeg */
static void get_str(int isbyte, demuxer_t *demuxer, char *buf, int buf_size)
{
    int len;
    
    if (isbyte)
	len = stream_read_char(demuxer->stream);
    else
	len = stream_read_word(demuxer->stream);

    stream_read(demuxer->stream, buf, (len > buf_size) ? buf_size : len);
    if (len > buf_size)
	stream_skip(demuxer->stream, len-buf_size);

    mp_msg(MSGT_DEMUX, MSGL_V, "read_str: %d bytes read\n", len);
}

static void skip_str(int isbyte, demuxer_t *demuxer)
{
    int len;

    if (isbyte)
	len = stream_read_char(demuxer->stream);
    else
	len = stream_read_word(demuxer->stream);

    stream_skip(demuxer->stream, len);    

    mp_msg(MSGT_DEMUX, MSGL_V, "skip_str: %d bytes skipped\n", len);
}

static void dump_index(demuxer_t *demuxer, int stream_id)
{
    real_priv_t *priv = demuxer->priv;
    real_index_table_t *index;
    int i, entries;

    if ( mp_msg_test(MSGT_DEMUX,MSGL_V) )
	return;
    
    if ((unsigned)stream_id >= MAX_STREAMS)
	return;

    index = priv->index_table[stream_id];
    entries = priv->index_table_size[stream_id];
    
    mp_msg(MSGT_DEMUX, MSGL_V, "Index table for stream %d\n", stream_id);
    for (i = 0; i < entries; i++)
    {
#if 1
	mp_msg(MSGT_DEMUX, MSGL_V,"i: %d, pos: %d, timestamp: %u\n", i, index[i].offset, index[i].timestamp);
#else
	mp_msg(MSGT_DEMUX, MSGL_V,"packetno: %x pos: %x len: %x timestamp: %x flags: %x\n",
	    index[i].packetno, index[i].offset, index[i].len, index[i].timestamp,
	    index[i].flags);
#endif
    }
}

static int parse_index_chunk(demuxer_t *demuxer)
{
    real_priv_t *priv = demuxer->priv;
    int origpos = stream_tell(demuxer->stream);
    int next_header_pos = priv->index_chunk_offset;
    int i, entries, stream_id;

read_index:
    stream_seek(demuxer->stream, next_header_pos);

    i = stream_read_dword_le(demuxer->stream);
    if ((i == -256) || (i != MKTAG('I', 'N', 'D', 'X')))
    {
	mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no index chunk found on given address (%d)\n",
	    next_header_pos);
	index_mode = -1;
        if (i == -256)
	    stream_reset(demuxer->stream);
    	stream_seek(demuxer->stream, origpos);
	return 0;
	//goto end;
    }

    mp_msg(MSGT_DEMUX, MSGL_V,"Reading index table from index chunk (%d)\n",
	next_header_pos);

    i = stream_read_dword(demuxer->stream);
    mp_msg(MSGT_DEMUX, MSGL_V,"size: %d bytes\n", i);

    i = stream_read_word(demuxer->stream);
    if (i != 0)
	mp_msg(MSGT_DEMUX, MSGL_WARN,"Hmm, index table with unknown version (%d), please report it to MPlayer developers!\n", i);

    entries = stream_read_dword(demuxer->stream);
    mp_msg(MSGT_DEMUX, MSGL_V,"entries: %d\n", entries);
    
    stream_id = stream_read_word(demuxer->stream);
    mp_msg(MSGT_DEMUX, MSGL_V,"stream_id: %d\n", stream_id);
    
    next_header_pos = stream_read_dword(demuxer->stream);
    mp_msg(MSGT_DEMUX, MSGL_V,"next_header_pos: %d\n", next_header_pos);
    if (entries <= 0 || entries > MAX_INDEX_ENTRIES)
    {
	if (next_header_pos)
	    goto read_index;
	i = entries;
	goto end;
    }

    priv->index_table_size[stream_id] = entries;
    priv->index_table[stream_id] = calloc(priv->index_table_size[stream_id], sizeof(real_index_table_t));
    
    for (i = 0; i < entries; i++)
    {
	stream_skip(demuxer->stream, 2); /* version */
	priv->index_table[stream_id][i].timestamp = stream_read_dword(demuxer->stream);
	priv->index_table[stream_id][i].offset = stream_read_dword(demuxer->stream);
	stream_skip(demuxer->stream, 4); /* packetno */
//	priv->index_table[stream_id][i].packetno = stream_read_dword(demuxer->stream);
//	printf("Index table: Stream#%d: entry: %d: pos: %d\n",
//	    stream_id, i, priv->index_table[stream_id][i].offset);
    }
    
    dump_index(demuxer, stream_id);

    if (next_header_pos > 0)
	goto read_index;

end:
    if (i == -256)
	stream_reset(demuxer->stream);
    stream_seek(demuxer->stream, origpos);
    if (i == -256)
	return 0;
    else
	return 1;
}

#if 1

static void add_index_item(demuxer_t *demuxer, int stream_id, unsigned int timestamp, int offset)
{
  if ((unsigned)stream_id < MAX_STREAMS)
  {
    real_priv_t *priv = demuxer->priv;
    real_index_table_t *index;
    if (priv->index_table_size[stream_id] >= MAX_INDEX_ENTRIES) {
      mp_msg(MSGT_DEMUXER, MSGL_WARN, "Index too large during building\n");
      return;
    }
    if (priv->index_table_size[stream_id] >= priv->index_malloc_size[stream_id])
    {
      if (priv->index_malloc_size[stream_id] == 0)
	priv->index_malloc_size[stream_id] = 2048;
      else
	priv->index_malloc_size[stream_id] += priv->index_malloc_size[stream_id] / 2;
      // in case we have a really large chunk...
      if (priv->index_table_size[stream_id] >=
            priv->index_malloc_size[stream_id])
        priv->index_malloc_size[stream_id] =
          priv->index_table_size[stream_id] + 1;
      priv->index_table[stream_id] = realloc(priv->index_table[stream_id], priv->index_malloc_size[stream_id]*sizeof(priv->index_table[0][0]));
    }
    if (priv->index_table_size[stream_id] > 0)
    {
      index = &priv->index_table[stream_id][priv->index_table_size[stream_id] - 1];
      if (index->timestamp >= timestamp || index->offset >= offset)
	return;
    }
    index = &priv->index_table[stream_id][priv->index_table_size[stream_id]++];
    index->timestamp = timestamp;
    index->offset = offset;
  }
}

static void add_index_segment(demuxer_t *demuxer, int seek_stream_id, int64_t seek_timestamp)
{
  int tag, len, stream_id, flags;
  unsigned int timestamp;
  if (seek_timestamp != -1 && (unsigned)seek_stream_id >= MAX_STREAMS)
    return;
  while (1)
  {
    demuxer->filepos = stream_tell(demuxer->stream);
    
    tag = stream_read_dword(demuxer->stream);
    if (tag == MKTAG('A', 'T', 'A', 'D'))
    {
      stream_skip(demuxer->stream, 14);
      continue; /* skip to next loop */
    }
    len = tag & 0xffff;
    if (tag == -256 || len < 12)
      break;
    
    stream_id = stream_read_word(demuxer->stream);
    timestamp = stream_read_dword(demuxer->stream);
    
    stream_skip(demuxer->stream, 1); /* reserved */
    flags = stream_read_char(demuxer->stream);
    
    if (flags == -256)
      break;
    
    if (flags & 2)
    {
      add_index_item(demuxer, stream_id, timestamp, demuxer->filepos);
      if (stream_id == seek_stream_id && timestamp >= seek_timestamp)
      {
	stream_seek(demuxer->stream, demuxer->filepos);
	return;
      }
    }
    // printf("Index: stream=%d packet=%d timestamp=%u len=%d flags=0x%x datapos=0x%x\n", stream_id, entries, timestamp, len, flags, index->offset);
    /* skip data */
    stream_skip(demuxer->stream, len-12);
  }
}

static int generate_index(demuxer_t *demuxer)
{
  real_priv_t *priv = demuxer->priv;
  int origpos = stream_tell(demuxer->stream);
  int data_pos = priv->data_chunk_offset-10;
  int i;
  int tag;
  
  stream_seek(demuxer->stream, data_pos);
  tag = stream_read_dword(demuxer->stream);
  if (tag != MKTAG('A', 'T', 'A', 'D'))
  {
    mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no data chunk found on given address (%d)\n", data_pos);
  }
  else
  {
    stream_skip(demuxer->stream, 14);
    add_index_segment(demuxer, -1, -1);
  }
  for (i = 0; i < MAX_STREAMS; i++)
  {
    if (priv->index_table_size[i] > 0)
    {
      dump_index(demuxer, i);
    }
  }
  stream_reset(demuxer->stream);
  stream_seek(demuxer->stream, origpos);
  return 0;
}

#else

static int generate_index(demuxer_t *demuxer)
{
    real_priv_t *priv = demuxer->priv;
    int origpos = stream_tell(demuxer->stream);
    int data_pos = priv->data_chunk_offset-10;
    int num_of_packets = 0;
    int i, entries = 0;
    int len, stream_id = 0, flags;
    unsigned int timestamp;
    int tab_pos = 0;

read_index:
    stream_seek(demuxer->stream, data_pos);

    i = stream_read_dword_le(demuxer->stream);
    if ((i == -256) || (i != MKTAG('D', 'A', 'T', 'A')))
    {
	mp_msg(MSGT_DEMUX, MSGL_WARN,"Something went wrong, no data chunk found on given address (%d)\n",
	    data_pos);
	goto end;
    }
    stream_skip(demuxer->stream, 4); /* chunk size */
    stream_skip(demuxer->stream, 2); /* version */
    
    num_of_packets = stream_read_dword(demuxer->stream);
    mp_msg(MSGT_DEMUX, MSGL_V,"Generating index table from raw data (pos: 0x%x) for %d packets\n",
	data_pos, num_of_packets);

    data_pos = stream_read_dword_le(demuxer->stream)-10; /* next data chunk */

    for (i = 0; i < MAX_STREAMS; i++)
    {
    priv->index_table_size[i] = num_of_packets;
    priv->index_table[i] = calloc(priv->index_table_size[i], sizeof(real_index_table_t));
//    priv->index_table[stream_id] = realloc(priv->index_table[stream_id],
//	priv->index_table_size[stream_id] * sizeof(real_index_table_t));
    }

    tab_pos = 0;
    
//    memset(priv->index_table_size, 0, sizeof(int)*MAX_STREAMS);
//    memset(priv->index_table, 0, sizeof(real_index_table_t)*MAX_STREAMS);
    
    while (tab_pos < num_of_packets)
    {
    i = stream_read_char(demuxer->stream);
    if (i == -256)
	goto end;
    stream_skip(demuxer->stream, 1);
//    stream_skip(demuxer->stream, 2); /* version */

    len = stream_read_word(demuxer->stream);
    stream_id = stream_read_word(demuxer->stream);
    timestamp = stream_read_dword(demuxer->stream);
    
    stream_skip(demuxer->stream, 1); /* reserved */
    flags = stream_read_char(demuxer->stream);

    i = tab_pos;

//    priv->index_table_size[stream_id] = i;
//    if (priv->index_table[stream_id] == NULL)
//	priv->index_table[stream_id] = malloc(priv->index_table_size[stream_id] * sizeof(real_index_table_t));
//    else
//	priv->index_table[stream_id] = realloc(priv->index_table[stream_id],
//	    priv->index_table_size[stream_id] * sizeof(real_index_table_t));
    
    priv->index_table[stream_id][i].timestamp = timestamp;
    priv->index_table[stream_id][i].offset = stream_tell(demuxer->stream)-12;
    priv->index_table[stream_id][i].len = len;
    priv->index_table[stream_id][i].packetno = entries;
    priv->index_table[stream_id][i].flags = flags;

    tab_pos++;

    /* skip data */
    stream_skip(demuxer->stream, len-12);
    }
    dump_index(demuxer, stream_id);
    if (data_pos)
	goto read_index;

end:
    if (i == -256)
	stream_reset(demuxer->stream);
    stream_seek(demuxer->stream, origpos);
    if (i == -256)
	return 0;
    else
	return 1;
}
#endif


static int real_check_file(demuxer_t* demuxer)
{
    real_priv_t *priv;
    int c;

    mp_msg(MSGT_DEMUX,MSGL_V,"Checking for REAL\n");
    
    c = stream_read_dword_le(demuxer->stream);
    if (c == -256)
	return 0; /* EOF */
    if (c != MKTAG('.', 'R', 'M', 'F'))
	return 0; /* bad magic */

    priv = malloc(sizeof(real_priv_t));
    memset(priv, 0, sizeof(real_priv_t));
    demuxer->priv = priv;

    return DEMUXER_TYPE_REAL;
}

void hexdump(char *, unsigned long);

#define SKIP_BITS(n) buffer<<=n
#define SHOW_BITS(n) ((buffer)>>(32-(n)))

static double real_fix_timestamp(real_priv_t* priv, unsigned char* s, unsigned int timestamp, double frametime, unsigned int format){
  double v_pts;
  uint32_t buffer= (s[0]<<24) + (s[1]<<16) + (s[2]<<8) + s[3];
  unsigned int kf=timestamp;
  int pict_type;
  unsigned int orig_kf;

#if 1
  if(format==mmioFOURCC('R','V','3','0') || format==mmioFOURCC('R','V','4','0')){
    if(format==mmioFOURCC('R','V','3','0')){
      SKIP_BITS(3);
      pict_type= SHOW_BITS(2);
      SKIP_BITS(2 + 7);
    }else{
      SKIP_BITS(1);
      pict_type= SHOW_BITS(2);
      SKIP_BITS(2 + 7 + 3);
    }
    orig_kf=
    kf= SHOW_BITS(13);  //    kf= 2*SHOW_BITS(12);
//    if(pict_type==0)
    if(pict_type<=1){
      // I frame, sync timestamps:
      priv->kf_base=(int64_t)timestamp-kf;
      mp_msg(MSGT_DEMUX, MSGL_DBG2,"\nTS: base=%08X\n",priv->kf_base);
      kf=timestamp;
    } else {
      // P/B frame, merge timestamps:
      int64_t tmp=(int64_t)timestamp-priv->kf_base;
      kf|=tmp&(~0x1fff);	// combine with packet timestamp
      if(kf<tmp-4096) kf+=8192; else // workaround wrap-around problems
      if(kf>tmp+4096) kf-=8192;
      kf+=priv->kf_base;
    }
    if(pict_type != 3){ // P || I  frame -> swap timestamps
	unsigned int tmp=kf;
	kf=priv->kf_pts;
	priv->kf_pts=tmp;
//	if(kf<=tmp) kf=0;
    }
    mp_msg(MSGT_DEMUX, MSGL_DBG2,"\nTS: %08X -> %08X (%04X) %d %02X %02X %02X %02X %5u\n",timestamp,kf,orig_kf,pict_type,s[0],s[1],s[2],s[3],kf-(unsigned int)(1000.0*priv->v_pts));
  }
#endif
    v_pts=kf*0.001f;
//    if(v_pts<priv->v_pts || !kf) v_pts=priv->v_pts+frametime;
    priv->v_pts=v_pts;
    return v_pts;
}

typedef struct dp_hdr_s {
    uint32_t chunks;	// number of chunks
    uint32_t timestamp; // timestamp from packet header
    uint32_t len;	// length of actual data
    uint32_t chunktab;	// offset to chunk offset array
} dp_hdr_t;

// return value:
//     0 = EOF or no stream found
//     1 = successfully read a packet
static int demux_real_fill_buffer(demuxer_t *demuxer, demux_stream_t *dsds)
{
    real_priv_t *priv = demuxer->priv;
    demux_stream_t *ds = NULL;
    int len;
    unsigned int timestamp;
    int stream_id;
#ifdef CRACK_MATRIX
    int i;
#endif
    int flags;
    int version;
    int reserved;
    demux_packet_t *dp;
    int x, sps, cfs, sph, spc, w;
    int audioreorder_getnextpk = 0;

  // Don't demux video if video codec init failed
  if (demuxer->video->id >= 0 && !demuxer->video->sh)
    demuxer->video->id = -2;

  while(!stream_eof(demuxer->stream)){

    /* Handle audio/video demxing switch for multirate files (non-interleaved) */
    if (priv->is_multirate && priv->stream_switch) {
        if (priv->a_idx_ptr >= priv->index_table_size[demuxer->audio->id])
            demuxer->audio->eof = 1;
        if (priv->v_idx_ptr >= priv->index_table_size[demuxer->video->id])
            demuxer->video->eof = 1;
        if (demuxer->audio->eof && demuxer->video->eof)
            return 0;
        else if (!demuxer->audio->eof && demuxer->video->eof)
            stream_seek(demuxer->stream, priv->audio_curpos); // Get audio
        else if (demuxer->audio->eof && !demuxer->video->eof)
            stream_seek(demuxer->stream, priv->video_curpos); // Get video
        else if (priv->index_table[demuxer->audio->id][priv->a_idx_ptr].timestamp <
            priv->index_table[demuxer->video->id][priv->v_idx_ptr].timestamp)
            stream_seek(demuxer->stream, priv->audio_curpos); // Get audio
        else
            stream_seek(demuxer->stream, priv->video_curpos); // Get video
        priv->stream_switch = 0;
    }

    demuxer->filepos = stream_tell(demuxer->stream);
    version = stream_read_word(demuxer->stream); /* version */
    len = stream_read_word(demuxer->stream);
    if ((version==0x4441) && (len==0x5441)) { // new data chunk
	mp_msg(MSGT_DEMUX,MSGL_INFO,"demux_real: New data chunk is coming!!!\n");
    if (priv->is_multirate)
        return 0; // EOF
	stream_skip(demuxer->stream,14); 
	demuxer->filepos = stream_tell(demuxer->stream);
        version = stream_read_word(demuxer->stream); /* version */
	len = stream_read_word(demuxer->stream);	
    } else if ((version == 0x494e) && (len == 0x4458)) {
        mp_msg(MSGT_DEMUX,MSGL_V,"demux_real: Found INDX chunk. EOF.\n");
        demuxer->stream->eof=1;
        return 0;
    }

    
    if (len == -256){ /* EOF */
//	printf("len==-256!\n");
	return 0;
    }
    if (len < 12){
	mp_msg(MSGT_DEMUX, MSGL_V,"%08X: packet v%d len=%d  \n",(int)demuxer->filepos,(int)version,(int)len);
	mp_msg(MSGT_DEMUX, MSGL_WARN,"bad packet len (%d)\n", len);
	stream_skip(demuxer->stream, len);
	continue; //goto loop;
    }

    stream_id = stream_read_word(demuxer->stream);
    timestamp = stream_read_dword(demuxer->stream);
    reserved = stream_read_char(demuxer->stream);
    flags = stream_read_char(demuxer->stream);
    /* flags:		*/
    /*  0x1 - reliable  */
    /* 	0x2 - keyframe	*/

    if (version == 1) {
        int tmp;
        tmp = stream_read_char(demuxer->stream);
        mp_msg(MSGT_DEMUX, MSGL_DBG2,"Version: %d, skipped byte is %d\n", version, tmp);
        len--;
    }

    if (flags & 2)
      add_index_item(demuxer, stream_id, timestamp, demuxer->filepos);

//    printf("%08X: packet v%d len=%4d  id=%d  pts=%6d  rvd=%d  flags=%d  \n",
//	(int)demuxer->filepos,(int)version,(int)len, stream_id,
//	(int) timestamp, reserved, flags);

    mp_dbg(MSGT_DEMUX,MSGL_DBG2,  "\npacket#%d: pos: 0x%0x, len: %d, id: %d, pts: %u, flags: %x rvd:%d\n",
	priv->current_packet, (int)demuxer->filepos, len, stream_id, timestamp, flags, reserved);

    priv->current_packet++;
    len -= 12;    

//    printf("s_id=%d  aid=%d  vid=%d  \n",stream_id,demuxer->audio->id,demuxer->video->id);

    /* check stream_id: */

    if(demuxer->audio->id==stream_id){
    	if (priv->audio_need_keyframe == 1&& flags != 0x2)
		goto discard;
got_audio:
	ds=demuxer->audio;
	mp_dbg(MSGT_DEMUX,MSGL_DBG2, "packet is audio (id: %d)\n", stream_id);

        if (flags & 2) {
    	    priv->sub_packet_cnt = 0;
    	    audioreorder_getnextpk = 0;
        }

	// parse audio chunk:
	{
#ifdef CRACK_MATRIX
	    int spos=stream_tell(demuxer->stream);
	    static int cnt=0;
	    static int cnt2=CRACK_MATRIX;
#endif
	    if (((sh_audio_t *)ds->sh)->format == mmioFOURCC('M', 'P', '4', 'A')) {
		uint16_t *sub_packet_lengths, sub_packets, i;
		/* AAC in Real: several AAC frames in one Real packet. */
		/* Second byte, upper four bits: number of AAC frames */
		/* next n * 2 bytes: length of the AAC frames in bytes, BE */
		sub_packets = (stream_read_word(demuxer->stream) & 0xf0) >> 4;
		sub_packet_lengths = calloc(sub_packets, sizeof(uint16_t));
		for (i = 0; i < sub_packets; i++)
		    sub_packet_lengths[i] = stream_read_word(demuxer->stream);
		for (i = 0; i < sub_packets; i++) {
		    demux_packet_t *dp = new_demux_packet(sub_packet_lengths[i]);
		    stream_read(demuxer->stream, dp->buffer, sub_packet_lengths[i]);
		    if (priv->a_pts != timestamp)
			dp->pts = timestamp / 1000.0;
		    priv->a_pts = timestamp;
		    dp->pos = demuxer->filepos;
		    ds_add_packet(ds, dp);
		}
		free(sub_packet_lengths);
		return 1;
	    }
        if ((((sh_audio_t*)ds->sh)->format == mmioFOURCC('2', '8', '_', '8')) ||
            (((sh_audio_t*)ds->sh)->format == mmioFOURCC('c', 'o', 'o', 'k')) ||
            (((sh_audio_t*)ds->sh)->format == mmioFOURCC('a', 't', 'r', 'c')) ||
            (((sh_audio_t*)ds->sh)->format == mmioFOURCC('s', 'i', 'p', 'r'))) {
            sps = priv->sub_packet_size[stream_id];
            sph = priv->sub_packet_h[stream_id];
            cfs = priv->coded_framesize[stream_id];
            w = priv->audiopk_size[stream_id];
            spc = priv->sub_packet_cnt;
            switch (((sh_audio_t*)ds->sh)->format) {
                case mmioFOURCC('2', '8', '_', '8'):
                    for (x = 0; x < sph / 2; x++)
                        stream_read(demuxer->stream, priv->audio_buf + x * 2 * w + spc * cfs, cfs);
                    break;
                case mmioFOURCC('c', 'o', 'o', 'k'):
                case mmioFOURCC('a', 't', 'r', 'c'):
                    for (x = 0; x < w / sps; x++)
                        stream_read(demuxer->stream, priv->audio_buf + sps * (sph * x + ((sph + 1) / 2) * (spc & 1) +
                                    (spc >> 1)), sps);
                    break;
                case mmioFOURCC('s', 'i', 'p', 'r'):
                    stream_read(demuxer->stream, priv->audio_buf + spc * w, w);
                    if (spc == sph - 1) {
                        int n;
                        int bs = sph * w * 2 / 96;  // nibbles per subpacket
                        // Perform reordering
                        for(n=0; n < 38; n++) {
                            int j;
                            int i = bs * sipr_swaps[n][0];
                            int o = bs * sipr_swaps[n][1];
                            // swap nibbles of block 'i' with 'o'      TODO: optimize
                            for(j = 0;j < bs; j++) {
                                int x = (i & 1) ? (priv->audio_buf[i >> 1] >> 4) : (priv->audio_buf[i >> 1] & 0x0F);
                                int y = (o & 1) ? (priv->audio_buf[o >> 1] >> 4) : (priv->audio_buf[o >> 1] & 0x0F);
                                if(o & 1)
                                    priv->audio_buf[o >> 1] = (priv->audio_buf[o >> 1] & 0x0F) | (x << 4);
                                else
                                    priv->audio_buf[o >> 1] = (priv->audio_buf[o >> 1] & 0xF0) | x;
                                if(i & 1)
                                    priv->audio_buf[i >> 1] = (priv->audio_buf[i >> 1] & 0x0F) | (y << 4);
                                else
                                    priv->audio_buf[i >> 1] = (priv->audio_buf[i >> 1] & 0xF0) | y;
                                ++i; ++o;
                            }
                        }
                    }
                    break;
            }
            priv->audio_need_keyframe = 0;
            priv->audio_timestamp[priv->sub_packet_cnt] = (priv->a_pts==timestamp) ? (correct_pts ? MP_NOPTS_VALUE : 0) : (timestamp/1000.0);
            priv->a_pts = timestamp;
            if (priv->sub_packet_cnt == 0)
                priv->audio_filepos = demuxer->filepos;
            if (++(priv->sub_packet_cnt) < sph)
                audioreorder_getnextpk = 1;
            else {
                int apk_usize = ((WAVEFORMATEX*)((sh_audio_t*)ds->sh)->wf)->nBlockAlign;
                audioreorder_getnextpk = 0;
                priv->sub_packet_cnt = 0;
                // Release all the audio packets
                for (x = 0; x < sph*w/apk_usize; x++) {
                    dp = new_demux_packet(apk_usize);
                    memcpy(dp->buffer, priv->audio_buf + x * apk_usize, apk_usize);
                    /* Put timestamp only on packets that correspond to original audio packets in file */
		    if (x * apk_usize % w == 0)
			dp->pts = priv->audio_timestamp[x * apk_usize / w];
                    dp->pos = priv->audio_filepos; // all equal
                    dp->flags = x ? 0 : 0x10; // Mark first packet as keyframe
                    ds_add_packet(ds, dp);
                }
            }
        } else { // Not a codec that require reordering
            dp = new_demux_packet(len);
            stream_read(demuxer->stream, dp->buffer, len);

#ifdef CRACK_MATRIX
	    mp_msg(MSGT_DEMUX, MSGL_V,"*** audio block len=%d\n",len);
	    { // HACK - used for reverse engineering the descrambling matrix
		FILE* f=fopen("test.rm","r+");
		fseek(f,spos,SEEK_SET);
		++cnt;
//		    for(i=0;i<len;i++) dp->buffer[i]=i/0x12;
//		    for(i=0;i<len;i++) dp->buffer[i]=i;
//		    for(i=0;i<len;i++) dp->buffer[i]=cnt;
//		    for(i=0;i<len;i++) dp->buffer[i]=cnt<<4;
		    for(i=0;i<len;i++) dp->buffer[i]=(i==cnt2) ? (cnt+16*(8+cnt)) : 0;
		if(cnt==6){ cnt=0; ++cnt2; }
		fwrite(dp->buffer, len, 1, f);
		fclose(f);
		if(cnt2>0x150) *((int*)NULL)=1; // sig11 :)
	    }
#endif
#if 0
	    if( ((sh_audio_t *)ds->sh)->format == 0x2000) {
		// if DNET, swap bytes, as DNET is byte-swapped AC3:
		char *ptr = dp->buffer;
		int i;
		for (i = 0; i < len; i += 2)
		{
		    const char tmp = ptr[0];
		    ptr[0] = ptr[1];
		    ptr[1] = tmp;
		    ptr += 2;
		}
	    }
#endif
	    if (priv->audio_need_keyframe == 1) {
		priv->audio_need_keyframe = 0;
	    } else if(priv->a_pts != timestamp)
	        dp->pts = timestamp/1000.0;
	    priv->a_pts=timestamp;
	    dp->pos = demuxer->filepos;
	    dp->flags = (flags & 0x2) ? 0x10 : 0;
	    ds_add_packet(ds, dp);

        } // codec_id check, codec default case
	}
// we will not use audio index if we use -idx and have a video
	if(!demuxer->video->sh && index_mode == 2 && (unsigned)demuxer->audio->id < MAX_STREAMS)
		while (priv->current_apacket + 1 < priv->index_table_size[demuxer->audio->id] &&
		       timestamp > priv->index_table[demuxer->audio->id][priv->current_apacket].timestamp)
			priv->current_apacket += 1;
	
	if(priv->is_multirate)
		while (priv->a_idx_ptr + 1 < priv->index_table_size[demuxer->audio->id] &&
		       timestamp > priv->index_table[demuxer->audio->id][priv->a_idx_ptr + 1].timestamp) {
			priv->a_idx_ptr++;
			priv->audio_curpos = stream_tell(demuxer->stream);
			priv->stream_switch = 1;
		}
	
    // If we're reordering audio packets and we need more data get it
    if (audioreorder_getnextpk)
        continue;

	return 1;
    }
    
    if(demuxer->video->id==stream_id){
got_video:
	ds=demuxer->video;
	mp_dbg(MSGT_DEMUX,MSGL_DBG2, "packet is video (id: %d)\n", stream_id);
	
	// parse video chunk:
	{
	    // we need a more complicated, 2nd level demuxing, as the video
	    // frames are stored fragmented in the video chunks :(
	    sh_video_t *sh_video = ds->sh;
	    demux_packet_t *dp;
	    unsigned vpkg_header, vpkg_length, vpkg_offset;
	    int vpkg_seqnum=-1;
	    int vpkg_subseq=0;

	    while(len>2){
		dp_hdr_t* dp_hdr;
		unsigned char* dp_data;
		uint32_t* extra;

//		printf("xxx len=%d  \n",len);

		// read packet header
		// bit 7: 1=last block in block chain
		// bit 6: 1=short header (only one block?)
		vpkg_header=stream_read_char(demuxer->stream); --len;
		mp_dbg(MSGT_DEMUX,MSGL_DBG2, "hdr: %02X (len=%d) ",vpkg_header,len);

		if (0x40==(vpkg_header&0xc0)) {
		    // seems to be a very short header
	    	    // 2 bytes, purpose of the second byte yet unknown
	    	    int bummer;
		    bummer=stream_read_char(demuxer->stream); --len;
 		    mp_dbg(MSGT_DEMUX,MSGL_DBG2,  "%02X",bummer);
 	    	    vpkg_offset=0;
 		    vpkg_length=len;
		} else {
		
		    if (0==(vpkg_header&0x40)) {
			// sub-seqnum (bits 0-6: number of fragment. bit 7: ???)
		        vpkg_subseq=stream_read_char(demuxer->stream);
	                --len;
		        mp_dbg(MSGT_DEMUX,MSGL_DBG2,  "subseq: %02X ",vpkg_subseq);
			vpkg_subseq&=0x7f;
	            }

	  	    // size of the complete packet
		    // bit 14 is always one (same applies to the offset)
		    vpkg_length=stream_read_word(demuxer->stream);
		    len-=2;
		    mp_dbg(MSGT_DEMUX,MSGL_DBG2, "l: %02X %02X ",vpkg_length>>8,vpkg_length&0xff);
		    if (!(vpkg_length&0xC000)) {
			vpkg_length<<=16;
		        vpkg_length|=(uint16_t)stream_read_word(demuxer->stream);
		        mp_dbg(MSGT_DEMUX,MSGL_DBG2, "l+: %02X %02X ",(vpkg_length>>8)&0xff,vpkg_length&0xff);
	    	        len-=2;
		    } else
		    vpkg_length&=0x3fff;

		    // offset of the following data inside the complete packet
		    // Note: if (hdr&0xC0)==0x80 then offset is relative to the
		    // _end_ of the packet, so it's equal to fragment size!!!
		    vpkg_offset=stream_read_word(demuxer->stream);
	            len-=2;
		    mp_dbg(MSGT_DEMUX,MSGL_DBG2, "o: %02X %02X ",vpkg_offset>>8,vpkg_offset&0xff);
		    if (!(vpkg_offset&0xC000)) {
			vpkg_offset<<=16;
		        vpkg_offset|=(uint16_t)stream_read_word(demuxer->stream);
		        mp_dbg(MSGT_DEMUX,MSGL_DBG2, "o+: %02X %02X ",(vpkg_offset>>8)&0xff,vpkg_offset&0xff);
	    	        len-=2;
		    } else
		    vpkg_offset&=0x3fff;

		    vpkg_seqnum=stream_read_char(demuxer->stream); --len;
		    mp_dbg(MSGT_DEMUX,MSGL_DBG2, "seq: %02X ",vpkg_seqnum);
	        }
 		mp_dbg(MSGT_DEMUX,MSGL_DBG2, "\n");
                mp_dbg(MSGT_DEMUX,MSGL_DBG2, "blklen=%d\n", len);
		mp_msg(MSGT_DEMUX,MSGL_DBG2, "block: hdr=0x%0x, len=%d, offset=%d, seqnum=%d\n",
		    vpkg_header, vpkg_length, vpkg_offset, vpkg_seqnum);

		if(ds->asf_packet){
		    dp=ds->asf_packet;
		    dp_hdr=(dp_hdr_t*)dp->buffer;
		    dp_data=dp->buffer+sizeof(dp_hdr_t);
		    extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
		    mp_dbg(MSGT_DEMUX,MSGL_DBG2, "we have an incomplete packet (oldseq=%d new=%d)\n",ds->asf_seq,vpkg_seqnum);
		    // we have an incomplete packet:
		    if(ds->asf_seq!=vpkg_seqnum){
			// this fragment is for new packet, close the old one
			mp_msg(MSGT_DEMUX,MSGL_DBG2, "closing probably incomplete packet, len: %d  \n",dp->len);
			if(priv->video_after_seek){
			    dp->pts=timestamp;
				priv->kf_base = 0;
				priv->kf_pts = dp_hdr->timestamp;
				priv->video_after_seek = 0;
			} else if (dp_hdr->len >= 3)
			    dp->pts =
			    real_fix_timestamp(priv,dp_data,dp_hdr->timestamp,sh_video->frametime,sh_video->format);
			ds_add_packet(ds,dp);
			ds->asf_packet=NULL;
		    } else {
			// append data to it!
			++dp_hdr->chunks;
			mp_msg(MSGT_DEMUX,MSGL_DBG2,"[chunks=%d  subseq=%d]\n",dp_hdr->chunks,vpkg_subseq);
			if(dp_hdr->chunktab+8*(1+dp_hdr->chunks)>dp->len){
			    // increase buffer size, this should not happen!
			    mp_msg(MSGT_DEMUX,MSGL_WARN, "chunktab buffer too small!!!!!\n");
			    dp->len=dp_hdr->chunktab+8*(4+dp_hdr->chunks);
			    dp->buffer=realloc(dp->buffer,dp->len+FF_INPUT_BUFFER_PADDING_SIZE);
			    memset(dp->buffer + dp->len, 0, FF_INPUT_BUFFER_PADDING_SIZE);
			    // re-calc pointers:
			    dp_hdr=(dp_hdr_t*)dp->buffer;
			    dp_data=dp->buffer+sizeof(dp_hdr_t);
			    extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
			}
			extra[2*dp_hdr->chunks+0]=1;
			extra[2*dp_hdr->chunks+1]=dp_hdr->len;
			if(0x80==(vpkg_header&0xc0)){
			    // last fragment!
			    if(dp_hdr->len!=vpkg_length-vpkg_offset)
				mp_msg(MSGT_DEMUX,MSGL_V,"warning! assembled.len=%d  frag.len=%d  total.len=%d  \n",dp->len,vpkg_offset,vpkg_length-vpkg_offset);
            		    stream_read(demuxer->stream, dp_data+dp_hdr->len, vpkg_offset);
			    if((dp_data[dp_hdr->len]&0x20) && (sh_video->format==0x30335652)) --dp_hdr->chunks; else
			    dp_hdr->len+=vpkg_offset;
			    len-=vpkg_offset;
 			    mp_dbg(MSGT_DEMUX,MSGL_DBG2, "fragment (%d bytes) appended, %d bytes left\n",vpkg_offset,len);
			    // we know that this is the last fragment -> we can close the packet!
			    if(priv->video_after_seek){
			        dp->pts=timestamp;
				    priv->kf_base = 0;
				    priv->kf_pts = dp_hdr->timestamp;
				    priv->video_after_seek = 0;
			    } else if (dp_hdr->len >= 3)
				dp->pts =
				real_fix_timestamp(priv,dp_data,dp_hdr->timestamp,sh_video->frametime,sh_video->format);
			    ds_add_packet(ds,dp);
			    ds->asf_packet=NULL;
			    // continue parsing
			    continue;
			}
			// non-last fragment:
			if(dp_hdr->len!=vpkg_offset)
			    mp_msg(MSGT_DEMUX,MSGL_V,"warning! assembled.len=%d  offset=%d  frag.len=%d  total.len=%d  \n",dp->len,vpkg_offset,len,vpkg_length);
            		stream_read(demuxer->stream, dp_data+dp_hdr->len, len);
			if((dp_data[dp_hdr->len]&0x20) && (sh_video->format==0x30335652)) --dp_hdr->chunks; else
			dp_hdr->len+=len;
			len=0;
			break; // no more fragments in this chunk!
		    }
		}
		// create new packet!
		dp = new_demux_packet(sizeof(dp_hdr_t)+vpkg_length+8*(1+2*(vpkg_header&0x3F)));
	    	// the timestamp seems to be in milliseconds
                dp->pos = demuxer->filepos;
                dp->flags = (flags & 0x2) ? 0x10 : 0;
		ds->asf_seq = vpkg_seqnum;
		dp_hdr=(dp_hdr_t*)dp->buffer;
		dp_hdr->chunks=0;
		dp_hdr->timestamp=timestamp;
		dp_hdr->chunktab=sizeof(dp_hdr_t)+vpkg_length;
		dp_data=dp->buffer+sizeof(dp_hdr_t);
		extra=(uint32_t*)(dp->buffer+dp_hdr->chunktab);
		extra[0]=1; extra[1]=0; // offset of the first chunk
		if(0x00==(vpkg_header&0xc0)){
		    // first fragment:
		    dp_hdr->len=len;
		    stream_read(demuxer->stream, dp_data, len);
		    ds->asf_packet=dp;
		    len=0;
		    break;
		}
		// whole packet (not fragmented):
		if (vpkg_length > len) {
		    mp_msg(MSGT_DEMUX, MSGL_WARN,"\n******** WARNING: vpkg_length=%i > len=%i ********\n", vpkg_length, len);
		    /*
		     * To keep the video stream rolling, we need to break 
		     * here. We shouldn't touch len to make sure rest of the
		     * broken packet is skipped.
		     */
		    break;
		}
		dp_hdr->len=vpkg_length; len-=vpkg_length;
		stream_read(demuxer->stream, dp_data, vpkg_length);
		if(priv->video_after_seek){
		    dp->pts=timestamp;
			priv->kf_base = 0;
			priv->kf_pts = dp_hdr->timestamp;
			priv->video_after_seek = 0;
		} else if (dp_hdr->len >= 3)
		    dp->pts =
		    real_fix_timestamp(priv,dp_data,dp_hdr->timestamp,sh_video->frametime,sh_video->format);
		ds_add_packet(ds,dp);

	    } // while(len>0)
	    
	    if(len){
		mp_msg(MSGT_DEMUX, MSGL_WARN,"\n******** !!!!!!!! BUG!! len=%d !!!!!!!!!!! ********\n",len);
		if(len>0) stream_skip(demuxer->stream, len);
	    }
	}
	if ((unsigned)demuxer->video->id < MAX_STREAMS)
		while (priv->current_vpacket + 1 < priv->index_table_size[demuxer->video->id] && 
		       timestamp > priv->index_table[demuxer->video->id][priv->current_vpacket + 1].timestamp)
			priv->current_vpacket += 1;

	if(priv->is_multirate)
		while (priv->v_idx_ptr + 1 < priv->index_table_size[demuxer->video->id] &&
		       timestamp > priv->index_table[demuxer->video->id][priv->v_idx_ptr + 1].timestamp) {
			priv->v_idx_ptr++;
			priv->video_curpos = stream_tell(demuxer->stream);
			priv->stream_switch = 1;
		}
	
	return 1;
    }

if((unsigned)stream_id<MAX_STREAMS){

    if(demuxer->audio->id==-1 && demuxer->a_streams[stream_id]){
	sh_audio_t *sh = demuxer->a_streams[stream_id];
	demuxer->audio->id=stream_id;
	sh->ds=demuxer->audio;
	demuxer->audio->sh=sh;
	priv->audio_buf = calloc(priv->sub_packet_h[demuxer->audio->id], priv->audiopk_size[demuxer->audio->id]);
	priv->audio_timestamp = calloc(priv->sub_packet_h[demuxer->audio->id], sizeof(double));
        mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected RM audio ID = %d\n",stream_id);
	goto got_audio;
    }

    if(demuxer->video->id==-1 && demuxer->v_streams[stream_id]){
	sh_video_t *sh = demuxer->v_streams[stream_id];
	demuxer->video->id=stream_id;
	sh->ds=demuxer->video;
	demuxer->video->sh=sh;
        mp_msg(MSGT_DEMUX,MSGL_V,"Auto-selected RM video ID = %d\n",stream_id);
	goto got_video;
    }

}

    mp_msg(MSGT_DEMUX,MSGL_DBG2, "unknown stream id (%d)\n", stream_id);
discard:
    stream_skip(demuxer->stream, len);
  }//    goto loop;
  return 0;
}

extern void print_wave_header(WAVEFORMATEX *h, int verbose_level);

static demuxer_t* demux_open_real(demuxer_t* demuxer)
{
    real_priv_t* priv = demuxer->priv;
    int num_of_headers;
    int a_streams=0;
    int v_streams=0;
    int i;
    int header_size;

    header_size = stream_read_dword(demuxer->stream); /* header size */
    mp_msg(MSGT_DEMUX,MSGL_V, "real: Header size: %d\n", header_size);
    i = stream_read_word(demuxer->stream); /* version */
    mp_msg(MSGT_DEMUX,MSGL_V, "real: Header object version: %d\n", i);
    if (header_size == 0x10)
    	i = stream_read_word(demuxer->stream);
    else /* we should test header_size here too. */
    	i = stream_read_dword(demuxer->stream);
    mp_msg(MSGT_DEMUX,MSGL_V, "real: File version: %d\n", i);
    num_of_headers = stream_read_dword(demuxer->stream);

    /* parse chunks */
    for (i = 1; i <= num_of_headers; i++)
//    for (i = 1; ; i++)
    {
	int chunk_id, chunk_pos, chunk_size;
	
	chunk_pos = stream_tell(demuxer->stream);
	chunk_id = stream_read_dword_le(demuxer->stream);
	chunk_size = stream_read_dword(demuxer->stream);

	stream_skip(demuxer->stream, 2); /* version */

	mp_msg(MSGT_DEMUX,MSGL_V, "Chunk: %.4s (%x) (size: 0x%x, offset: 0x%x)\n",
	    (char *)&chunk_id, chunk_id, chunk_size, chunk_pos);
	
	if (chunk_size < 10){
	    mp_msg(MSGT_DEMUX,MSGL_ERR,"demux_real: invalid chunksize! (%d)\n",chunk_size);
	    break; //return;
	}
	
	switch(chunk_id)
	{
	    case MKTAG('P', 'R', 'O', 'P'):
		/* Properties header */

		stream_skip(demuxer->stream, 4); /* max bitrate */
		stream_skip(demuxer->stream, 4); /* avg bitrate */
		stream_skip(demuxer->stream, 4); /* max packet size */
		stream_skip(demuxer->stream, 4); /* avg packet size */
		stream_skip(demuxer->stream, 4); /* nb packets */
		priv->duration = stream_read_dword(demuxer->stream)/1000; /* duration */
		stream_skip(demuxer->stream, 4); /* preroll */
		priv->index_chunk_offset = stream_read_dword(demuxer->stream);
		mp_msg(MSGT_DEMUX,MSGL_V,"First index chunk offset: 0x%x\n", priv->index_chunk_offset);
		priv->data_chunk_offset = stream_read_dword(demuxer->stream)+10;
		mp_msg(MSGT_DEMUX,MSGL_V,"First data chunk offset: 0x%x\n", priv->data_chunk_offset);
		stream_skip(demuxer->stream, 2); /* nb streams */
#if 0
		stream_skip(demuxer->stream, 2); /* flags */
#else
		{
		    int flags = stream_read_word(demuxer->stream);
		    
		    if (flags)
		    {
		    mp_msg(MSGT_DEMUX,MSGL_V,"Flags (%x): ", flags);
		    if (flags & 0x1)
			mp_msg(MSGT_DEMUX,MSGL_V,"[save allowed] ");
		    if (flags & 0x2)
			mp_msg(MSGT_DEMUX,MSGL_V,"[perfect play (more buffers)] ");
		    if (flags & 0x4)
			mp_msg(MSGT_DEMUX,MSGL_V,"[live broadcast] ");
		    mp_msg(MSGT_DEMUX,MSGL_V,"\n");
		    }
		}
#endif
		break;
	    case MKTAG('C', 'O', 'N', 'T'):
	    {
		/* Content description header */
		char *buf;
		int len;

		len = stream_read_word(demuxer->stream);
		if (len > 0)
		{
		    buf = malloc(len+1);
		    stream_read(demuxer->stream, buf, len);
		    buf[len] = 0;
		    demux_info_add(demuxer, "name", buf);
		    free(buf);
		}

		len = stream_read_word(demuxer->stream);
		if (len > 0)
		{
		    buf = malloc(len+1);
		    stream_read(demuxer->stream, buf, len);
		    buf[len] = 0;
		    demux_info_add(demuxer, "author", buf);
		    free(buf);
		}

		len = stream_read_word(demuxer->stream);
		if (len > 0)
		{
		    buf = malloc(len+1);
		    stream_read(demuxer->stream, buf, len);
		    buf[len] = 0;
		    demux_info_add(demuxer, "copyright", buf);
		    free(buf);
		}

		len = stream_read_word(demuxer->stream);
		if (len > 0)
		{
		    buf = malloc(len+1);
	    	    stream_read(demuxer->stream, buf, len);
		    buf[len] = 0;
		    demux_info_add(demuxer, "comment", buf);
		    free(buf);
		}
		break;
	    }
	    case MKTAG('M', 'D', 'P', 'R'):
	    {
		/* Media properties header */
		int stream_id;
		int bitrate;
		int codec_data_size;
		int codec_pos;
		int tmp;
		int len;
		char *descr, *mimet = NULL;

		stream_id = stream_read_word(demuxer->stream);
		mp_msg(MSGT_DEMUX,MSGL_V,"Found new stream (id: %d)\n", stream_id);
		
		stream_skip(demuxer->stream, 4); /* max bitrate */
		bitrate = stream_read_dword(demuxer->stream); /* avg bitrate */
		stream_skip(demuxer->stream, 4); /* max packet size */
		stream_skip(demuxer->stream, 4); /* avg packet size */
		stream_skip(demuxer->stream, 4); /* start time */
		stream_skip(demuxer->stream, 4); /* preroll */
		stream_skip(demuxer->stream, 4); /* duration */
		
		if ((len = stream_read_char(demuxer->stream)) > 0) {
		    descr = malloc(len+1);
	    	stream_read(demuxer->stream, descr, len);
		    descr[len] = 0;
		    mp_msg(MSGT_DEMUX, MSGL_INFO,"Stream description: %s\n", descr);
		    free(descr);
		}
		if ((len = stream_read_char(demuxer->stream)) > 0) {
		    mimet = malloc(len+1);
	    	stream_read(demuxer->stream, mimet, len);
		    mimet[len] = 0;
		    mp_msg(MSGT_DEMUX, MSGL_INFO,"Stream mimetype: %s\n", mimet);
		}
		
		/* Type specific header */
		codec_data_size = stream_read_dword(demuxer->stream);
		codec_pos = stream_tell(demuxer->stream);

#ifdef MP_DEBUG
#define stream_skip(st,siz) { int i; for(i=0;i<siz;i++) mp_msg(MSGT_DEMUX,MSGL_V," %02X",stream_read_char(st)); mp_msg(MSGT_DEMUX,MSGL_V,"\n");}
#endif

	if (!strncmp(mimet,"audio/",6)) {
	  if (strstr(mimet,"x-pn-realaudio") || strstr(mimet,"x-pn-multirate-realaudio")) {
		tmp = stream_read_dword(demuxer->stream);
		if (tmp != MKTAG(0xfd, 'a', 'r', '.'))
		{
		    mp_msg(MSGT_DEMUX,MSGL_V,"Audio: can't find .ra in codec data\n");
		} else {
		    /* audio header */
		    sh_audio_t *sh = new_sh_audio(demuxer, stream_id);
		    char buf[128]; /* for codec name */
		    int frame_size;
		    int sub_packet_size;
		    int sub_packet_h;
		    int version;
		    int flavor;
		    int coded_frame_size;
		    int codecdata_length;
		    int i;
		    char *buft;
		    int hdr_size;
		    
		    mp_msg(MSGT_DEMUX,MSGL_V,"Found audio stream!\n");
		    version = stream_read_word(demuxer->stream);
		    mp_msg(MSGT_DEMUX,MSGL_V,"version: %d\n", version);
                   if (version == 3) {
                    stream_skip(demuxer->stream, 2);
                    stream_skip(demuxer->stream, 10);
                    stream_skip(demuxer->stream, 4);
                    // Name, author, (c) are also in CONT tag
                    if ((i = stream_read_char(demuxer->stream)) != 0) {
                      buft = malloc(i+1);
                      stream_read(demuxer->stream, buft, i);
                      buft[i] = 0;
                      demux_info_add(demuxer, "Name", buft);
                      free(buft);
                    }
                    if ((i = stream_read_char(demuxer->stream)) != 0) {
                      buft = malloc(i+1);
                      stream_read(demuxer->stream, buft, i);
                      buft[i] = 0;
                      demux_info_add(demuxer, "Author", buft);
                      free(buft);
                    }
                    if ((i = stream_read_char(demuxer->stream)) != 0) {
                      buft = malloc(i+1);
                      stream_read(demuxer->stream, buft, i);
                      buft[i] = 0;
                      demux_info_add(demuxer, "Copyright", buft);
                      free(buft);
                    }
                    if ((i = stream_read_char(demuxer->stream)) != 0)
                      mp_msg(MSGT_DEMUX,MSGL_WARN,"Last header byte is not zero!\n");
                    stream_skip(demuxer->stream, 1);
                    i = stream_read_char(demuxer->stream);
                    sh->format = stream_read_dword_le(demuxer->stream);
                    if (i != 4) {
                      mp_msg(MSGT_DEMUX,MSGL_WARN,"Audio FourCC size is not 4 (%d), please report to "
                             "MPlayer developers\n", i);
                      stream_skip(demuxer->stream, i - 4);
                    }
                    if (sh->format != mmioFOURCC('l','p','c','J')) {
                      mp_msg(MSGT_DEMUX,MSGL_WARN,"Version 3 audio with FourCC %8x, please report to "
                             "MPlayer developers\n", sh->format);
                    }
                    sh->channels = 1;
                    sh->samplesize = 16;
                    sh->samplerate = 8000;
                    frame_size = 240;
                    strcpy(buf, "14_4");
                   } else {
		    stream_skip(demuxer->stream, 2); // 00 00
		    stream_skip(demuxer->stream, 4); /* .ra4 or .ra5 */
		    stream_skip(demuxer->stream, 4); // ???
		    stream_skip(demuxer->stream, 2); /* version (4 or 5) */
		    hdr_size = stream_read_dword(demuxer->stream); // header size
		    mp_msg(MSGT_DEMUX,MSGL_V,"header size: %d\n", hdr_size);
		    flavor = stream_read_word(demuxer->stream);/* codec flavor id */
		    coded_frame_size = stream_read_dword(demuxer->stream);/* needed by codec */
		    mp_msg(MSGT_DEMUX,MSGL_V,"coded_frame_size: %d\n", coded_frame_size);
		    stream_skip(demuxer->stream, 4); // big number
		    stream_skip(demuxer->stream, 4); // bigger number
		    stream_skip(demuxer->stream, 4); // 2 || -''-
		    sub_packet_h = stream_read_word(demuxer->stream);
		    mp_msg(MSGT_DEMUX,MSGL_V,"sub_packet_h: %d\n", sub_packet_h);
		    frame_size = stream_read_word(demuxer->stream);
		    mp_msg(MSGT_DEMUX,MSGL_V,"frame_size: %d\n", frame_size);
		    sub_packet_size = stream_read_word(demuxer->stream);
		    mp_msg(MSGT_DEMUX,MSGL_V,"sub_packet_size: %d\n", sub_packet_size);
		    stream_skip(demuxer->stream, 2); // 0
		    
		    if (version == 5)
			stream_skip(demuxer->stream, 6); //0,srate,0

		    sh->samplerate = stream_read_word(demuxer->stream);
		    stream_skip(demuxer->stream, 2);  // 0
		    sh->samplesize = stream_read_word(demuxer->stream)/8;
		    sh->channels = stream_read_word(demuxer->stream);
		    mp_msg(MSGT_DEMUX,MSGL_V,"samplerate: %d, channels: %d\n",
			sh->samplerate, sh->channels);

		    if (version == 5)
		    {
			stream_skip(demuxer->stream, 4);  // "genr"
			stream_read(demuxer->stream, buf, 4); // fourcc
			buf[4] = 0;
		    }
		    else
		    {		
			/* Desc #1 */
			skip_str(1, demuxer);
			/* Desc #2 */
			get_str(1, demuxer, buf, sizeof(buf));
		    }
                   }

		    /* Emulate WAVEFORMATEX struct: */
		    sh->wf = malloc(sizeof(WAVEFORMATEX));
		    memset(sh->wf, 0, sizeof(WAVEFORMATEX));
		    sh->wf->nChannels = sh->channels;
		    sh->wf->wBitsPerSample = sh->samplesize*8;
		    sh->wf->nSamplesPerSec = sh->samplerate;
		    sh->wf->nAvgBytesPerSec = bitrate/8;
		    sh->wf->nBlockAlign = frame_size;
		    sh->wf->cbSize = 0;
		    sh->format = MKTAG(buf[0], buf[1], buf[2], buf[3]);

		    switch (sh->format)
		    {
			case MKTAG('d', 'n', 'e', 't'):
			    mp_msg(MSGT_DEMUX,MSGL_V,"Audio: DNET -> AC3\n");
//			    sh->format = 0x2000;
			    break;
			case MKTAG('1', '4', '_', '4'):
                sh->wf->nBlockAlign = 0x14;
                            break;

			case MKTAG('2', '8', '_', '8'):
			    sh->wf->nBlockAlign = coded_frame_size;
			    priv->sub_packet_size[stream_id] = sub_packet_size;
			    priv->sub_packet_h[stream_id] = sub_packet_h;
			    priv->coded_framesize[stream_id] = coded_frame_size;
			    priv->audiopk_size[stream_id] = frame_size;
			    break;

			case MKTAG('s', 'i', 'p', 'r'):
			case MKTAG('a', 't', 'r', 'c'):
			case MKTAG('c', 'o', 'o', 'k'):
			    // realaudio codec plugins - common:
			    stream_skip(demuxer->stream,3);  // Skip 3 unknown bytes 
			    if (version==5)
			      stream_skip(demuxer->stream,1);  // Skip 1 additional unknown byte 
			    codecdata_length=stream_read_dword(demuxer->stream);
			    // Check extradata len, we can't store bigger values in cbSize anyway
			    if ((unsigned)codecdata_length > 0xffff) {
			        mp_msg(MSGT_DEMUX,MSGL_ERR,"Extradata too big (%d)\n", codecdata_length);
				goto skip_this_chunk;
			    }
			    sh->wf->cbSize = codecdata_length;
			    sh->wf = realloc(sh->wf, sizeof(WAVEFORMATEX)+sh->wf->cbSize);
			    stream_read(demuxer->stream, ((char*)(sh->wf+1)), codecdata_length); // extras
                if ((sh->format == MKTAG('a', 't', 'r', 'c')) ||
                    (sh->format == MKTAG('c', 'o', 'o', 'k')))
    			    sh->wf->nBlockAlign = sub_packet_size;
    			else
    			    sh->wf->nBlockAlign = coded_frame_size;

			    priv->sub_packet_size[stream_id] = sub_packet_size;
			    priv->sub_packet_h[stream_id] = sub_packet_h;
			    priv->coded_framesize[stream_id] = coded_frame_size;
			    priv->audiopk_size[stream_id] = frame_size;
			    break;

			case MKTAG('r', 'a', 'a', 'c'):
			case MKTAG('r', 'a', 'c', 'p'):
			    /* This is just AAC. The two or five bytes of */
			    /* config data needed for libfaad are stored */
			    /* after the audio headers. */
			    stream_skip(demuxer->stream,3);  // Skip 3 unknown bytes 
			    if (version==5)
				stream_skip(demuxer->stream,1);  // Skip 1 additional unknown byte 
			    codecdata_length=stream_read_dword(demuxer->stream);
			    if (codecdata_length>=1) {
				sh->codecdata_len = codecdata_length - 1;
				sh->codecdata = calloc(sh->codecdata_len, 1);
				stream_skip(demuxer->stream, 1);
				stream_read(demuxer->stream, sh->codecdata, sh->codecdata_len);
			    }
			    sh->format = mmioFOURCC('M', 'P', '4', 'A');
			    break;
			default:
			    mp_msg(MSGT_DEMUX,MSGL_V,"Audio: Unknown (%s)\n", buf);
		    }

		    sh->wf->wFormatTag = sh->format;
		    
		    mp_msg(MSGT_DEMUX,MSGL_V,"audio fourcc: %.4s (%x)\n", (char *)&sh->format, sh->format);
		    if ( mp_msg_test(MSGT_DEMUX,MSGL_V) )
		    print_wave_header(sh->wf, MSGL_V);

		    /* Select audio stream with highest bitrate if multirate file*/
		    if (priv->is_multirate && ((demuxer->audio->id == -1) ||
		                               ((demuxer->audio->id >= 0) && priv->a_bitrate && (bitrate > priv->a_bitrate)))) {
			    demuxer->audio->id = stream_id;
			    priv->a_bitrate = bitrate;
			    mp_msg(MSGT_DEMUX,MSGL_DBG2,"Multirate autoselected audio id %d with bitrate %d\n", stream_id, bitrate);
		    }

		    if(demuxer->audio->id==stream_id){
			sh->ds=demuxer->audio;
			demuxer->audio->sh=sh;
        	priv->audio_buf = calloc(priv->sub_packet_h[demuxer->audio->id], priv->audiopk_size[demuxer->audio->id]);
        	priv->audio_timestamp = calloc(priv->sub_packet_h[demuxer->audio->id], sizeof(double));
		    }
		    
		    ++a_streams;

#ifdef stream_skip
#undef stream_skip
#endif
		}
	  } else if (strstr(mimet,"X-MP3-draft-00")) {
		    sh_audio_t *sh = new_sh_audio(demuxer, stream_id);

		    /* Emulate WAVEFORMATEX struct: */
		    sh->wf = malloc(sizeof(WAVEFORMATEX));
		    memset(sh->wf, 0, sizeof(WAVEFORMATEX));
		    sh->wf->nChannels = 0;//sh->channels;
		    sh->wf->wBitsPerSample = 16;
		    sh->wf->nSamplesPerSec = 0;//sh->samplerate;
		    sh->wf->nAvgBytesPerSec = 0;//bitrate;
		    sh->wf->nBlockAlign = 0;//frame_size;
		    sh->wf->cbSize = 0;
		    sh->wf->wFormatTag = sh->format = mmioFOURCC('a','d','u',0x55);
		    
		    if(demuxer->audio->id==stream_id){
			    sh->ds=demuxer->audio;
			    demuxer->audio->sh=sh;
		    }
		    
		    ++a_streams;
	  } else if (strstr(mimet,"x-ralf-mpeg4")) {
		 mp_msg(MSGT_DEMUX,MSGL_ERR,"Real lossless audio not supported yet\n");
	  } else {
		 mp_msg(MSGT_DEMUX,MSGL_V,"Unknown audio stream format\n");
		}
	} else if (!strncmp(mimet,"video/",6)) {
	  if (strstr(mimet,"x-pn-realvideo") || strstr(mimet,"x-pn-multirate-realvideo")) {
		stream_skip(demuxer->stream, 4);  // VIDO length, same as codec_data_size
		tmp = stream_read_dword(demuxer->stream);
		if(tmp != MKTAG('O', 'D', 'I', 'V'))
		{
		    mp_msg(MSGT_DEMUX,MSGL_V,"Video: can't find VIDO in codec data\n");
		} else {
		    /* video header */
		    sh_video_t *sh = new_sh_video(demuxer, stream_id);

		    sh->format = stream_read_dword_le(demuxer->stream); /* fourcc */
		    mp_msg(MSGT_DEMUX,MSGL_V,"video fourcc: %.4s (%x)\n", (char *)&sh->format, sh->format);

		    /* emulate BITMAPINFOHEADER */
		    sh->bih = malloc(sizeof(BITMAPINFOHEADER));
		    memset(sh->bih, 0, sizeof(BITMAPINFOHEADER));
	    	    sh->bih->biSize = sizeof(BITMAPINFOHEADER);
		    sh->disp_w = sh->bih->biWidth = stream_read_word(demuxer->stream);
		    sh->disp_h = sh->bih->biHeight = stream_read_word(demuxer->stream);
		    sh->bih->biPlanes = 1;
		    sh->bih->biBitCount = 24;
		    sh->bih->biCompression = sh->format;
		    sh->bih->biSizeImage= sh->bih->biWidth*sh->bih->biHeight*3;

		    sh->fps = (float) stream_read_word(demuxer->stream);
		    if (sh->fps<=0) sh->fps=24; // we probably won't even care about fps
		    sh->frametime = 1.0f/sh->fps;
		    
#if 1
		    stream_skip(demuxer->stream, 4);
#else
		    mp_msg(MSGT_DEMUX, MSGL_V,"unknown1: 0x%X  \n",stream_read_dword(demuxer->stream));
		    mp_msg(MSGT_DEMUX, MSGL_V,"unknown2: 0x%X  \n",stream_read_word(demuxer->stream));
		    mp_msg(MSGT_DEMUX, MSGL_V,"unknown3: 0x%X  \n",stream_read_word(demuxer->stream));
#endif
//		    if(sh->format==0x30335652 || sh->format==0x30325652 )
		    if(1)
		    {
			int tmp=stream_read_word(demuxer->stream);
			if(tmp>0){
			    sh->fps=tmp; sh->frametime = 1.0f/sh->fps;
			}
		    } else {
	    		int fps=stream_read_word(demuxer->stream);
			mp_msg(MSGT_DEMUX, MSGL_WARN,"realvid: ignoring FPS = %d\n",fps);
		    }
		    stream_skip(demuxer->stream, 2);
		    
		    {
			    // read and store codec extradata
			    unsigned int cnt = codec_data_size - (stream_tell(demuxer->stream) - codec_pos);
			    if (cnt > 0x7fffffff - sizeof(BITMAPINFOHEADER)) {
			        mp_msg(MSGT_DEMUX, MSGL_ERR,"Extradata too big (%u)\n", cnt);
			    } else  {
				sh->bih = realloc(sh->bih, sizeof(BITMAPINFOHEADER) + cnt);
			        sh->bih->biSize += cnt;
				stream_read(demuxer->stream, ((unsigned char*)(sh->bih+1)), cnt);
			    }
		    } 
		    if(sh->format == 0x30315652 && ((unsigned char*)(sh->bih+1))[6] == 0x30)
			    sh->bih->biCompression = sh->format = mmioFOURCC('R', 'V', '1', '3');
		    
		    /* Select video stream with highest bitrate if multirate file*/
		    if (priv->is_multirate && ((demuxer->video->id == -1) ||
		                               ((demuxer->video->id >= 0) && priv->v_bitrate && (bitrate > priv->v_bitrate)))) {
			    demuxer->video->id = stream_id;
			    priv->v_bitrate = bitrate;
			    mp_msg(MSGT_DEMUX,MSGL_DBG2,"Multirate autoselected video id %d with bitrate %d\n", stream_id, bitrate);
		    }

		    if(demuxer->video->id==stream_id){
			sh->ds=demuxer->video;
			demuxer->video->sh=sh;
		    }
		    
		    ++v_streams;

		}
	  } else {
		 mp_msg(MSGT_DEMUX,MSGL_V,"Unknown video stream format\n");
	  }
	} else if (strstr(mimet,"logical-")) {
		 if (strstr(mimet,"fileinfo")) {
		     mp_msg(MSGT_DEMUX,MSGL_V,"Got a logical-fileinfo chunk\n");
		 } else if (strstr(mimet,"-audio") || strstr(mimet,"-video")) {
		    int i, stream_cnt;
		    int stream_list[MAX_STREAMS];
		    
		    priv->is_multirate = 1;
		    stream_skip(demuxer->stream, 4); // Length of codec data (repeated)
		    stream_cnt = stream_read_dword(demuxer->stream); // Get number of audio or video streams
		    if ((unsigned)stream_cnt >= MAX_STREAMS) {
		        mp_msg(MSGT_DEMUX,MSGL_ERR,"Too many streams in %s. Big troubles ahead.\n", mimet);
		        goto skip_this_chunk;
		    }
		    for (i = 0; i < stream_cnt; i++)
		        stream_list[i] = stream_read_word(demuxer->stream);
		    for (i = 0; i < stream_cnt; i++)
		        if ((unsigned)stream_list[i] >= MAX_STREAMS) {
		            mp_msg(MSGT_DEMUX,MSGL_ERR,"Stream id out of range: %d. Ignored.\n", stream_list[i]);
		            stream_skip(demuxer->stream, 4); // Skip DATA offset for broken stream
		        } else {
		            priv->str_data_offset[stream_list[i]] = stream_read_dword(demuxer->stream);
		            mp_msg(MSGT_DEMUX,MSGL_V,"Stream %d with DATA offset 0x%08x\n", stream_list[i], priv->str_data_offset[stream_list[i]]);
		        }
		    // Skip the rest of this chunk
		 } else 
		     mp_msg(MSGT_DEMUX,MSGL_V,"Unknown logical stream\n");
		}
		else {
		    mp_msg(MSGT_DEMUX, MSGL_ERR, "Not audio/video stream or unsupported!\n");
		}
//		break;
//	    default:
skip_this_chunk:
		/* skip codec info */
		tmp = stream_tell(demuxer->stream) - codec_pos;
		mp_msg(MSGT_DEMUX,MSGL_V,"### skipping %d bytes of codec info\n", codec_data_size - tmp);
#if 0
		{ int i;
		  for(i=0;i<codec_data_size - tmp;i++)
		      mp_msg(MSGT_DEMUX, MSGL_V," %02X",stream_read_char(demuxer->stream));
		  mp_msg(MSGT_DEMUX, MSGL_V,"\n");
		}
#else
		stream_skip(demuxer->stream, codec_data_size - tmp);
#endif
		if (mimet)
		    free (mimet);
		break;
//	    }
	    }
	    case MKTAG('D', 'A', 'T', 'A'):
		goto header_end;
	    case MKTAG('I', 'N', 'D', 'X'):
	    default:
		mp_msg(MSGT_DEMUX,MSGL_V,"Unknown chunk: %x\n", chunk_id);
		stream_skip(demuxer->stream, chunk_size - 10);
		break;
	}
    }

header_end:
    if(priv->is_multirate) {
        mp_msg(MSGT_DEMUX,MSGL_V,"Selected video id %d audio id %d\n", demuxer->video->id, demuxer->audio->id);
        /* Perform some sanity checks to avoid checking streams id all over the code*/
        if (demuxer->audio->id >= MAX_STREAMS) {
            mp_msg(MSGT_DEMUX,MSGL_ERR,"Invalid audio stream %d. No sound will be played.\n", demuxer->audio->id);
            demuxer->audio->id = -2;
        } else if ((demuxer->audio->id >= 0) && (priv->str_data_offset[demuxer->audio->id] == 0)) {
            mp_msg(MSGT_DEMUX,MSGL_ERR,"Audio stream %d not found. No sound will be played.\n", demuxer->audio->id);
            demuxer->audio->id = -2;
        }
        if (demuxer->video->id >= MAX_STREAMS) {
            mp_msg(MSGT_DEMUX,MSGL_ERR,"Invalid video stream %d. No video will be played.\n", demuxer->video->id);
            demuxer->video->id = -2;
        } else if ((demuxer->video->id >= 0) && (priv->str_data_offset[demuxer->video->id] == 0)) {
            mp_msg(MSGT_DEMUX,MSGL_ERR,"Video stream %d not found. No video will be played.\n", demuxer->video->id);
            demuxer->video->id = -2;
        }
    }

    if(priv->is_multirate && ((demuxer->video->id >= 0) || (demuxer->audio->id  >=0))) {
        /* If audio or video only, seek to right place and behave like standard file */
        if (demuxer->video->id < 0) {
            // Stream is audio only, or -novideo
            stream_seek(demuxer->stream, priv->data_chunk_offset = priv->str_data_offset[demuxer->audio->id]+10);
            priv->is_multirate = 0;
        }
        if (demuxer->audio->id < 0) {
            // Stream is video only, or -nosound
            stream_seek(demuxer->stream, priv->data_chunk_offset = priv->str_data_offset[demuxer->video->id]+10);
            priv->is_multirate = 0;
        }
    }

  if(!priv->is_multirate) {
//    printf("i=%d num_of_headers=%d   \n",i,num_of_headers);
    priv->num_of_packets = stream_read_dword(demuxer->stream);
    stream_skip(demuxer->stream, 4); /* next data header */

    mp_msg(MSGT_DEMUX,MSGL_V,"Packets in file: %d\n", priv->num_of_packets);

    if (priv->num_of_packets == 0)
	priv->num_of_packets = -10;
  } else {
        priv->audio_curpos = priv->str_data_offset[demuxer->audio->id] + 18;
        stream_seek(demuxer->stream, priv->str_data_offset[demuxer->audio->id]+10);
        priv->a_num_of_packets=priv->a_num_of_packets = stream_read_dword(demuxer->stream);
        priv->video_curpos = priv->str_data_offset[demuxer->video->id] + 18;
        stream_seek(demuxer->stream, priv->str_data_offset[demuxer->video->id]+10);
        priv->v_num_of_packets = stream_read_dword(demuxer->stream);
        priv->stream_switch = 1;
        /* Index required for multirate playback, force building if it's not there */
        /* but respect user request to force index regeneration */
        if (index_mode == -1)
            index_mode = 1;
    }


    priv->audio_need_keyframe = 0;
    priv->video_after_seek = 0;

    switch (index_mode){
	case -1: // untouched
	    if (priv->index_chunk_offset && parse_index_chunk(demuxer))
	    {
		demuxer->seekable = 1;
	    }
	    break;
	case 1: // use (generate index)
	    if (priv->index_chunk_offset && parse_index_chunk(demuxer))
	    {
		demuxer->seekable = 1;
	    } else {
		generate_index(demuxer);
		demuxer->seekable = 1;
	    }
	    break;
	case 2: // force generating index
	    generate_index(demuxer);
	    demuxer->seekable = 1;
	    break;
	default: // do nothing
    	    break;
    }

    if(priv->is_multirate)
        demuxer->seekable = 0; // No seeking yet for multirate streams

    // detect streams:
    if(demuxer->video->id==-1 && v_streams>0){
	// find the valid video stream:
	if(!ds_fill_buffer(demuxer->video)){
          mp_msg(MSGT_DEMUXER,MSGL_INFO,"RM: " MSGTR_MissingVideoStream);
	}
    }
    if(demuxer->audio->id==-1 && a_streams>0){
	// find the valid audio stream:
	if(!ds_fill_buffer(demuxer->audio)){
          mp_msg(MSGT_DEMUXER,MSGL_INFO,"RM: " MSGTR_MissingAudioStream);
	}
    }

    if(demuxer->video->sh){
	sh_video_t *sh=demuxer->video->sh;
	mp_msg(MSGT_DEMUX,MSGL_V,"VIDEO:  %.4s [%08X,%08X]  %dx%d  (aspect %4.2f)  %4.2f fps\n",
	    (char *)&sh->format,((unsigned int*)(sh->bih+1))[1],((unsigned int*)(sh->bih+1))[0],
	    sh->disp_w,sh->disp_h,sh->aspect,sh->fps);
    }

    if(demuxer->audio->sh){
	sh_audio_t *sh=demuxer->audio->sh;
	mp_msg(MSGT_DEMUX,MSGL_V,"AUDIO:  %.4s [%08X]\n",
	    (char *)&sh->format,sh->format);
    }

    return demuxer;
}

static void demux_close_real(demuxer_t *demuxer)
{
    int i;
    real_priv_t* priv = demuxer->priv;
 
    if (priv){
    	for(i=0; i<MAX_STREAMS; i++)
	    if(priv->index_table[i])
	        free(priv->index_table[i]);
    if (priv->audio_buf)
        free(priv->audio_buf);
    if (priv->audio_timestamp)
        free(priv->audio_timestamp);
	free(priv);
    }

    return;
}

/* please upload RV10 samples WITH INDEX CHUNK */
static void demux_seek_real(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
{
    real_priv_t *priv = demuxer->priv;
    demux_stream_t *d_audio = demuxer->audio;
    demux_stream_t *d_video = demuxer->video;
    sh_audio_t *sh_audio = d_audio->sh;
    sh_video_t *sh_video = d_video->sh;
    int vid = d_video->id, aid = d_audio->id;
    int next_offset = 0;
    int64_t cur_timestamp = 0;
    int streams = 0;
    int retried = 0;


    if (sh_video && (unsigned)vid < MAX_STREAMS && priv->index_table_size[vid])
	streams |= 1;
    if (sh_audio && (unsigned)aid < MAX_STREAMS && priv->index_table_size[aid])
	streams |= 2;

//    printf("streams: %d\n", streams);

    if (!streams)
	return;

    if (flags & 1)
	/* seek absolute */
	priv->current_apacket = priv->current_vpacket = 0;
    if (flags & 2) // percent seek
        rel_seek_secs *= priv->duration;

    if ((streams & 1) && priv->current_vpacket >= priv->index_table_size[vid])
	priv->current_vpacket = priv->index_table_size[vid] - 1;
    if ((streams & 2) && priv->current_apacket >= priv->index_table_size[aid])
	priv->current_apacket = priv->index_table_size[aid] - 1;

//    if (index_mode == 1 || index_mode == 2) {
    	if (streams & 1) {// use the video index if we have one
            cur_timestamp = priv->index_table[vid][priv->current_vpacket].timestamp;
	    if (rel_seek_secs > 0)
	    	while ((priv->index_table[vid][priv->current_vpacket].timestamp - cur_timestamp) < rel_seek_secs * 1000){
	    		priv->current_vpacket += 1;
	    		if (priv->current_vpacket >= priv->index_table_size[vid]) {
	    			priv->current_vpacket = priv->index_table_size[vid] - 1;
				if (!retried) {
					stream_seek(demuxer->stream, priv->index_table[vid][priv->current_vpacket].offset);
					add_index_segment(demuxer, vid, cur_timestamp + rel_seek_secs * 1000);
					retried = 1;
				}
				else
	    				break;
	    		}
	    	} 
	    else if (rel_seek_secs < 0)
	    	while ((cur_timestamp - priv->index_table[vid][priv->current_vpacket].timestamp) < - rel_seek_secs * 1000){
	    		priv->current_vpacket -= 1;
	    		if (priv->current_vpacket < 0) {
	    			priv->current_vpacket = 0;
	    			break;
	    		}
	    	}
	    next_offset = priv->index_table[vid][priv->current_vpacket].offset;
	    priv->audio_need_keyframe = 1;
	    priv->video_after_seek = 1;
        }
    	else if (streams & 2) {
            cur_timestamp = priv->index_table[aid][priv->current_apacket].timestamp;
	    if (rel_seek_secs > 0)
	    	while ((priv->index_table[aid][priv->current_apacket].timestamp - cur_timestamp) < rel_seek_secs * 1000){
	    		priv->current_apacket += 1;
	    		if (priv->current_apacket >= priv->index_table_size[aid]) {
	    			priv->current_apacket = priv->index_table_size[aid] - 1;
	    			break;
	    		}
	    	}
	    else if (rel_seek_secs < 0)
	    	while ((cur_timestamp - priv->index_table[aid][priv->current_apacket].timestamp) < - rel_seek_secs * 1000){
	    		priv->current_apacket -= 1;
	    		if (priv->current_apacket < 0) {
	    			priv->current_apacket = 0;
	    			break;
	    		}
	    	}
	    next_offset = priv->index_table[aid][priv->current_apacket].offset;
        }
//    }
//    printf("seek: pos: %d, current packets: a: %d, v: %d\n",
//	next_offset, priv->current_apacket, priv->current_vpacket);
    if (next_offset)
        stream_seek(demuxer->stream, next_offset);

    demux_real_fill_buffer(demuxer, NULL);
}

static int demux_real_control(demuxer_t *demuxer, int cmd, void *arg)
{
    real_priv_t *priv = demuxer->priv;
    unsigned int lastpts = priv->v_pts ? priv->v_pts : priv->a_pts;
    
    switch (cmd) {
        case DEMUXER_CTRL_GET_TIME_LENGTH:
	    if (priv->duration == 0)
	        return DEMUXER_CTRL_DONTKNOW;
	    
	    *((double *)arg) = (double)priv->duration;
	    return DEMUXER_CTRL_OK;

	case DEMUXER_CTRL_GET_PERCENT_POS:
	    if (priv->duration == 0)
	        return DEMUXER_CTRL_DONTKNOW;
	    
	    *((int *)arg) = (int)(100 * lastpts / priv->duration);
	    return DEMUXER_CTRL_OK;
	
	default:
	    return DEMUXER_CTRL_NOTIMPL;
    }
}


demuxer_desc_t demuxer_desc_real = {
  "Realmedia demuxer",
  "real",
  "REAL",
  "Alex Beregszasi, Florian Schneider, A'rpi, Roberto Togni",
  "handles new .RMF files",
  DEMUXER_TYPE_REAL,
  1, // safe autodetect
  real_check_file,
  demux_real_fill_buffer,
  demux_open_real,
  demux_close_real,
  demux_seek_real,
  demux_real_control
};