summaryrefslogtreecommitdiff
path: root/dvbdevice.c
blob: a779720338833e74df5c92f6ddec0c88faa90a5c (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
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
/*
 * dvbdevice.c: The DVB device tuner interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: dvbdevice.c 4.27 2020/10/16 13:58:45 kls Exp $
 */

#include "dvbdevice.h"
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "channels.h"
#include "diseqc.h"
#include "dvbci.h"
#include "menuitems.h"
#include "sourceparams.h"

static int DvbApiVersion = 0x0000; // the version of the DVB driver actually in use (will be determined by the first device created)

#define DVBS_TUNE_TIMEOUT  9000 //ms
#define DVBS_LOCK_TIMEOUT  2000 //ms
#define DVBC_TUNE_TIMEOUT  9000 //ms
#define DVBC_LOCK_TIMEOUT  2000 //ms
#define DVBT_TUNE_TIMEOUT  9000 //ms
#define DVBT_LOCK_TIMEOUT  2000 //ms
#define ATSC_TUNE_TIMEOUT  9000 //ms
#define ATSC_LOCK_TIMEOUT  2000 //ms

#define SCR_RANDOM_TIMEOUT  500 // ms (add random value up to this when tuning SCR device to avoid lockups)

#define TSBUFFERSIZE MEGABYTE(16)

// --- DVB Parameter Maps ----------------------------------------------------

const tDvbParameterMap PilotValues[] = {
  {   0, PILOT_OFF,  trNOOP("off") },
  {   1, PILOT_ON,   trNOOP("on") },
  { 999, PILOT_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap InversionValues[] = {
  {   0, INVERSION_OFF,  trNOOP("off") },
  {   1, INVERSION_ON,   trNOOP("on") },
  { 999, INVERSION_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap BandwidthValues[] = {
  {    5,  5000000, "5 MHz" },
  {    6,  6000000, "6 MHz" },
  {    7,  7000000, "7 MHz" },
  {    8,  8000000, "8 MHz" },
  {   10, 10000000, "10 MHz" },
  { 1712,  1712000, "1.712 MHz" },
  {  -1, 0, NULL }
  };

const tDvbParameterMap CoderateValues[] = {
  {   0, FEC_NONE, trNOOP("none") },
  {  12, FEC_1_2,  "1/2" },
  {  23, FEC_2_3,  "2/3" },
  {  34, FEC_3_4,  "3/4" },
  {  35, FEC_3_5,  "3/5" },
  {  45, FEC_4_5,  "4/5" },
  {  56, FEC_5_6,  "5/6" },
  {  67, FEC_6_7,  "6/7" },
  {  78, FEC_7_8,  "7/8" },
  {  89, FEC_8_9,  "8/9" },
  { 910, FEC_9_10, "9/10" },
  { 999, FEC_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap ModulationValues[] = {
  {  16, QAM_16,   "QAM16" },
  {  32, QAM_32,   "QAM32" },
  {  64, QAM_64,   "QAM64" },
  { 128, QAM_128,  "QAM128" },
  { 256, QAM_256,  "QAM256" },
  {   2, QPSK,     "QPSK" },
  {   5, PSK_8,    "8PSK" },
  {   6, APSK_16,  "16APSK" },
  {   7, APSK_32,  "32APSK" },
  {  10, VSB_8,    "VSB8" },
  {  11, VSB_16,   "VSB16" },
  {  12, DQPSK,    "DQPSK" },
  { 999, QAM_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

#define DVB_SYSTEM_1 0 // see also nit.c
#define DVB_SYSTEM_2 1

const tDvbParameterMap SystemValuesSat[] = {
  {   0, DVB_SYSTEM_1, "DVB-S" },
  {   1, DVB_SYSTEM_2, "DVB-S2" },
  {  -1, 0, NULL }
  };

const tDvbParameterMap SystemValuesTerr[] = {
  {   0, DVB_SYSTEM_1, "DVB-T" },
  {   1, DVB_SYSTEM_2, "DVB-T2" },
  {  -1, 0, NULL }
  };

const tDvbParameterMap TransmissionValues[] = {
  {   1, TRANSMISSION_MODE_1K,   "1K" },
  {   2, TRANSMISSION_MODE_2K,   "2K" },
  {   4, TRANSMISSION_MODE_4K,   "4K" },
  {   8, TRANSMISSION_MODE_8K,   "8K" },
  {  16, TRANSMISSION_MODE_16K,  "16K" },
  {  32, TRANSMISSION_MODE_32K,  "32K" },
  { 999, TRANSMISSION_MODE_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap GuardValues[] = {
  {     4, GUARD_INTERVAL_1_4,    "1/4" },
  {     8, GUARD_INTERVAL_1_8,    "1/8" },
  {    16, GUARD_INTERVAL_1_16,   "1/16" },
  {    32, GUARD_INTERVAL_1_32,   "1/32" },
  {   128, GUARD_INTERVAL_1_128,  "1/128" },
  { 19128, GUARD_INTERVAL_19_128, "19/128" },
  { 19256, GUARD_INTERVAL_19_256, "19/256" },
  {   999, GUARD_INTERVAL_AUTO,   trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap HierarchyValues[] = {
  {   0, HIERARCHY_NONE, trNOOP("none") },
  {   1, HIERARCHY_1,    "1" },
  {   2, HIERARCHY_2,    "2" },
  {   4, HIERARCHY_4,    "4" },
  { 999, HIERARCHY_AUTO, trNOOP("auto") },
  {  -1, 0, NULL }
  };

const tDvbParameterMap RollOffValues[] = {
  {   0, ROLLOFF_AUTO, trNOOP("auto") },
  {  20, ROLLOFF_20, "0.20" },
  {  25, ROLLOFF_25, "0.25" },
  {  35, ROLLOFF_35, "0.35" },
  {  -1, 0, NULL }
  };

int UserIndex(int Value, const tDvbParameterMap *Map)
{
  const tDvbParameterMap *map = Map;
  while (map && map->userValue != -1) {
        if (map->userValue == Value)
           return map - Map;
        map++;
        }
  return -1;
}

int DriverIndex(int Value, const tDvbParameterMap *Map)
{
  const tDvbParameterMap *map = Map;
  while (map && map->userValue != -1) {
        if (map->driverValue == Value)
           return map - Map;
        map++;
        }
  return -1;
}

int MapToUser(int Value, const tDvbParameterMap *Map, const char **String)
{
  int n = DriverIndex(Value, Map);
  if (n >= 0) {
     if (String)
        *String = tr(Map[n].userString);
     return Map[n].userValue;
     }
  return -1;
}

const char *MapToUserString(int Value, const tDvbParameterMap *Map)
{
  int n = DriverIndex(Value, Map);
  if (n >= 0)
     return Map[n].userString;
  return "???";
}

int MapToDriver(int Value, const tDvbParameterMap *Map)
{
  int n = UserIndex(Value, Map);
  if (n >= 0)
     return Map[n].driverValue;
  return -1;
}

// --- cDvbTransponderParameters ---------------------------------------------

cDvbTransponderParameters::cDvbTransponderParameters(const char *Parameters)
{
  Parse(Parameters);
}

int cDvbTransponderParameters::PrintParameter(char *p, char Name, int Value) const
{
  return Value >= 0 && Value != 999 ? sprintf(p, "%c%d", Name, Value) : 0;
}

cString cDvbTransponderParameters::ToString(char Type) const
{
#define ST(s) if (strchr(s, Type) && (strchr(s, '0' + system + 1) || strchr(s, '*')))
  char buffer[64];
  char *q = buffer;
  *q = 0;
  ST("  S *")  q += sprintf(q, "%c", polarization);
  ST("   T*")  q += PrintParameter(q, 'B', MapToUser(bandwidth, BandwidthValues));
  ST(" CST*")  q += PrintParameter(q, 'C', MapToUser(coderateH, CoderateValues));
  ST("   T*")  q += PrintParameter(q, 'D', MapToUser(coderateL, CoderateValues));
  ST("   T*")  q += PrintParameter(q, 'G', MapToUser(guard, GuardValues));
  ST("ACST*")  q += PrintParameter(q, 'I', MapToUser(inversion, InversionValues));
  ST("ACST*")  q += PrintParameter(q, 'M', MapToUser(modulation, ModulationValues));
  ST("  S 2")  q += PrintParameter(q, 'N', MapToUser(pilot, PilotValues));
  ST("  S 2")  q += PrintParameter(q, 'O', MapToUser(rollOff, RollOffValues));
  ST("  ST2")  q += PrintParameter(q, 'P', streamId);
  ST("   T2")  q += PrintParameter(q, 'Q', t2systemId);
  ST("  ST*")  q += PrintParameter(q, 'S', MapToUser(system, SystemValuesSat)); // we only need the numerical value, so Sat or Terr doesn't matter
  ST("   T*")  q += PrintParameter(q, 'T', MapToUser(transmission, TransmissionValues));
  ST("   T2")  q += PrintParameter(q, 'X', sisoMiso);
  ST("   T*")  q += PrintParameter(q, 'Y', MapToUser(hierarchy, HierarchyValues));
  return buffer;
}

const char *cDvbTransponderParameters::ParseParameter(const char *s, int &Value, const tDvbParameterMap *Map)
{
  if (*++s) {
     char *p = NULL;
     errno = 0;
     int n = strtol(s, &p, 10);
     if (!errno && p != s) {
        Value = Map ? MapToDriver(n, Map) : n;
        if (Value >= 0)
           return p;
        }
     }
  esyslog("ERROR: invalid value for parameter '%c'", *(s - 1));
  return NULL;
}

bool cDvbTransponderParameters::Parse(const char *s)
{
  polarization = 0;
  inversion    = INVERSION_AUTO;
  bandwidth    = 8000000;
  coderateH    = FEC_AUTO;
  coderateL    = FEC_AUTO;
  modulation   = QPSK;
  system       = DVB_SYSTEM_1;
  transmission = TRANSMISSION_MODE_AUTO;
  guard        = GUARD_INTERVAL_AUTO;
  hierarchy    = HIERARCHY_AUTO;
  rollOff      = ROLLOFF_AUTO;
  streamId     = 0;
  t2systemId   = 0;
  sisoMiso     = 0;
  pilot        = PILOT_AUTO;
  while (s && *s) {
        switch (toupper(*s)) {
          case 'B': s = ParseParameter(s, bandwidth, BandwidthValues); break;
          case 'C': s = ParseParameter(s, coderateH, CoderateValues); break;
          case 'D': s = ParseParameter(s, coderateL, CoderateValues); break;
          case 'G': s = ParseParameter(s, guard, GuardValues); break;
          case 'H': polarization = 'H'; s++; break;
          case 'I': s = ParseParameter(s, inversion, InversionValues); break;
          case 'L': polarization = 'L'; s++; break;
          case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
          case 'N': s = ParseParameter(s, pilot, PilotValues); break;
          case 'O': s = ParseParameter(s, rollOff, RollOffValues); break;
          case 'P': s = ParseParameter(s, streamId); break;
          case 'Q': s = ParseParameter(s, t2systemId); break;
          case 'R': polarization = 'R'; s++; break;
          case 'S': s = ParseParameter(s, system, SystemValuesSat); break; // we only need the numerical value, so Sat or Terr doesn't matter
          case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
          case 'V': polarization = 'V'; s++; break;
          case 'X': s = ParseParameter(s, sisoMiso); break;
          case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;
          default: esyslog("ERROR: unknown parameter key '%c'", *s);
                   return false;
          }
        }
  return true;
}

// --- cDvbFrontend ----------------------------------------------------------

const char *DeliverySystemNames[] = {
  "???",
  "DVB-C",
  "DVB-C",
  "DVB-T",
  "DSS",
  "DVB-S",
  "DVB-S2",
  "DVB-H",
  "ISDBT",
  "ISDBS",
  "ISDBC",
  "ATSC",
  "ATSCMH",
  "DTMB",
  "CMMB",
  "DAB",
  "DVB-T2",
  "TURBO",
  "DVB-C",
  "DVB-C2",
  NULL
  };

static const int DeliverySystemNamesMax = sizeof(DeliverySystemNames) / sizeof(DeliverySystemNames[0]) - 2; // -1 to get the maximum allowed index & -1 for the NULL => -2

static const char *GetDeliverySystemName(int Index)
{
  if (Index > DeliverySystemNamesMax)
     Index = 0;
  return DeliverySystemNames[Index];
};

#define MAXFRONTENDCMDS 16
#define SETCMD(c, d) { Props[CmdSeq.num].cmd = (c);\
                       Props[CmdSeq.num].u.data = (d);\
                       if (CmdSeq.num++ > MAXFRONTENDCMDS) {\
                          esyslog("ERROR: too many tuning commands on frontend %d/%d", adapter, frontend);\
                          return false;\
                          }\
                     }

class cDvbFrontend {
private:
  int adapter, frontend;
  int fd_frontend;
  uint32_t subsystemId;
  dvb_frontend_info frontendInfo;
  cVector<int> deliverySystems;
  int numModulations;
  bool QueryDeliverySystems(void);
public:
  cDvbFrontend(int Adapter, int Frontend);
  ~cDvbFrontend();
  int Open(void);
  void Close(void);
  const char *FrontendName(void) { return frontendInfo.name; }
  bool ProvidesDeliverySystem(int DeliverySystem) const;
  bool ProvidesModulation(int System, int StreamId, int Modulation) const;
  int NumDeliverySystems(void) const { return deliverySystems.Size(); }
  int NumModulations(void) const { return numModulations; }
  uint32_t SubsystemId(void) const { return subsystemId; }
  };

cDvbFrontend::cDvbFrontend(int Adapter, int Frontend)
{
  adapter = Adapter;
  frontend = Frontend;
  fd_frontend = -1;
  subsystemId = cDvbDeviceProbe::GetSubsystemId(adapter, frontend);
  numModulations = 0;
  Open();
  QueryDeliverySystems();
  Close();
}

cDvbFrontend::~cDvbFrontend()
{
  Close();
}

int cDvbFrontend::Open(void)
{
  Close();
  fd_frontend = DvbOpen(DEV_DVB_FRONTEND, adapter, frontend, O_RDWR | O_NONBLOCK, true);
  return fd_frontend;
}

void cDvbFrontend::Close(void)
{
  if (fd_frontend >= 0) {
     if (close(fd_frontend) != 0)
        esyslog("ERROR: frontend %d/%d", adapter, frontend);
     fd_frontend = -1;
     }
}

bool cDvbFrontend::ProvidesDeliverySystem(int DeliverySystem) const
{
  for (int i = 0; i < deliverySystems.Size(); i++) {
      if (deliverySystems[i] == DeliverySystem)
         return true;
      }
  return false;
}

bool cDvbFrontend::ProvidesModulation(int System, int StreamId, int Modulation) const
{
  if (StreamId != 0 && !(frontendInfo.caps & FE_CAN_MULTISTREAM))
     return false;
  if (Modulation == QPSK     && !(frontendInfo.caps & FE_CAN_QPSK) ||
      Modulation == QAM_16   && !(frontendInfo.caps & FE_CAN_QAM_16) ||
      Modulation == QAM_32   && !(frontendInfo.caps & FE_CAN_QAM_32) ||
      Modulation == QAM_64   && !(frontendInfo.caps & FE_CAN_QAM_64) ||
      Modulation == QAM_128  && !(frontendInfo.caps & FE_CAN_QAM_128) ||
      Modulation == QAM_256  && !(frontendInfo.caps & FE_CAN_QAM_256) ||
      Modulation == QAM_AUTO && !(frontendInfo.caps & FE_CAN_QAM_AUTO) ||
      Modulation == VSB_8    && !(frontendInfo.caps & FE_CAN_8VSB) ||
      Modulation == VSB_16   && !(frontendInfo.caps & FE_CAN_16VSB) ||
      Modulation == PSK_8    && !(frontendInfo.caps & FE_CAN_TURBO_FEC) && System == SYS_DVBS) // "turbo fec" is a non standard FEC used by North American broadcasters - this is a best guess to de
     return false;
  return true;
}

bool cDvbFrontend::QueryDeliverySystems(void)
{
  deliverySystems.Clear();
  numModulations = 0;
  if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) < 0) {
     LOG_ERROR;
     return false;
     }
  dtv_property Props[1];
  dtv_properties CmdSeq;
  // Determine the version of the running DVB API:
  if (!DvbApiVersion) {
     memset(&Props, 0, sizeof(Props));
     memset(&CmdSeq, 0, sizeof(CmdSeq));
     CmdSeq.props = Props;
     SETCMD(DTV_API_VERSION, 0);
     if (ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
        LOG_ERROR;
        return false;
        }
     DvbApiVersion = Props[0].u.data;
     isyslog("DVB API version is 0x%04X (VDR was built with 0x%04X)", DvbApiVersion, DVBAPIVERSION);
     }
  // Determine the types of delivery systems this device provides:
  bool LegacyMode = true;
  if (DvbApiVersion >= 0x0505) {
     memset(&Props, 0, sizeof(Props));
     memset(&CmdSeq, 0, sizeof(CmdSeq));
     CmdSeq.props = Props;
     SETCMD(DTV_ENUM_DELSYS, 0);
     int Result = ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq);
     if (Result == 0) {
        for (uint i = 0; i < Props[0].u.buffer.len; i++) {
            // activate this line to simulate a multi-frontend device if you only have a single-frontend device with DVB-S and DVB-S2:
            //if (frontend == 0 && Props[0].u.buffer.data[i] != SYS_DVBS || frontend == 1 && Props[0].u.buffer.data[i] != SYS_DVBS2)
            deliverySystems.Append(Props[0].u.buffer.data[i]);
            }
        LegacyMode = false;
        }
     else {
        esyslog("ERROR: can't query delivery systems on frontend %d/%d - falling back to legacy mode", adapter, frontend);
        }
     }
  if (LegacyMode) {
     // Legacy mode (DVB-API < 5.5):
     switch (frontendInfo.type) {
       case FE_QPSK: deliverySystems.Append(SYS_DVBS);
                     if (frontendInfo.caps & FE_CAN_2G_MODULATION)
                        deliverySystems.Append(SYS_DVBS2);
                     break;
       case FE_OFDM: deliverySystems.Append(SYS_DVBT);
                     if (frontendInfo.caps & FE_CAN_2G_MODULATION)
                        deliverySystems.Append(SYS_DVBT2);
                     break;
       case FE_QAM:  deliverySystems.Append(SYS_DVBC_ANNEX_AC); break;
       case FE_ATSC: deliverySystems.Append(SYS_ATSC); break;
       default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
       }
     }
  if (deliverySystems.Size() > 0) {
     cString ds("");
     for (int i = 0; i < deliverySystems.Size(); i++)
         ds = cString::sprintf("%s%s%s", *ds, i ? "," : "", GetDeliverySystemName(deliverySystems[i]));
     cString ms("");
     if (frontendInfo.caps & FE_CAN_QPSK)      { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QPSK, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_QAM_16)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_16, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_QAM_32)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_32, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_QAM_64)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_64, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_QAM_128)   { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_128, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_QAM_256)   { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_256, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_8VSB)      { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_8, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_16VSB)     { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_16, ModulationValues)); }
     if (frontendInfo.caps & FE_CAN_TURBO_FEC) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", "TURBO_FEC"); }
     if (!**ms)
        ms = "unknown modulations";
     isyslog("frontend %d/%d provides %s with %s (\"%s\")", adapter, frontend, *ds, *ms, frontendInfo.name);
     return true;
     }
  else
     esyslog("ERROR: frontend %d/%d doesn't provide any delivery systems", adapter, frontend);
  return false;
}

// --- cDvbTuner -------------------------------------------------------------

#define TUNER_POLL_TIMEOUT  10 // ms

static int GetRequiredDeliverySystem(const cChannel *Channel, const cDvbTransponderParameters *Dtp)
{
  int ds = SYS_UNDEFINED;
  if (Channel->IsAtsc())
     ds = SYS_ATSC;
  else if (Channel->IsCable())
     ds = SYS_DVBC_ANNEX_AC;
  else if (Channel->IsSat())
     ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBS : SYS_DVBS2;
  else if (Channel->IsTerr())
     ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBT : SYS_DVBT2;
  else
     esyslog("ERROR: can't determine frontend type for channel %d (%s)", Channel->Number(), Channel->Name());
  return ds;
}

class cDvbTuner : public cThread {
private:
  static cMutex bondMutex;
  enum eTunerStatus { tsIdle, tsSet, tsPositioning, tsTuned, tsLocked };
  int frontendType;
  const cDvbDevice *device;
  mutable int fd_frontend;
  int adapter;
  mutable int frontend;
  cVector<cDvbFrontend *> dvbFrontends;
  mutable cDvbFrontend *dvbFrontend;
  int numDeliverySystems;
  int numModulations;
  int tuneTimeout;
  int lockTimeout;
  time_t lastTimeoutReport;
  mutable uint32_t lastUncValue;
  mutable uint32_t lastUncDelta;
  mutable time_t lastUncChange;
  cChannel channel;
  const cDiseqc *lastDiseqc;
  int diseqcOffset;
  int lastSource;
  cPositioner *positioner;
  const cScr *scr;
  bool lnbPowerTurnedOn;
  eTunerStatus tunerStatus;
  mutable cMutex mutex;
  cCondVar locked;
  cCondVar newSet;
  cDvbTuner *bondedTuner;
  bool bondedMaster;
  bool SetFrontendType(const cChannel *Channel);
  cString GetBondingParams(const cChannel *Channel = NULL) const;
  cDvbTuner *GetBondedMaster(void);
  bool IsBondedMaster(void) const { return !bondedTuner || bondedMaster; }
  void ClearEventQueue(void) const;
  bool GetFrontendStatus(fe_status_t &Status) const;
  cPositioner *GetPositioner(void);
  void ExecuteDiseqc(const cDiseqc *Diseqc, int *Frequency);
  void ResetToneAndVoltage(void);
  bool SetFrontend(void);
  virtual void Action(void);
public:
  cDvbTuner(const cDvbDevice *Device, int Adapter, int Frontend);
  virtual ~cDvbTuner();
  bool ProvidesDeliverySystem(int DeliverySystem) const;
  bool ProvidesModulation(int System, int StreamId, int Modulation) const;
  bool ProvidesFrontend(const cChannel *Channel, bool Activate = false) const;
  int Frontend(void) const { return frontend; }
  int FrontendType(void) const { return frontendType; }
  const char *FrontendName(void) { return dvbFrontend->FrontendName(); }
  int NumProvidedSystems(void) const { return numDeliverySystems + numModulations; }
  bool Bond(cDvbTuner *Tuner);
  void UnBond(void);
  bool BondingOk(const cChannel *Channel, bool ConsiderOccupied = false) const;
  const cChannel *GetTransponder(void) const { return &channel; }
  uint32_t SubsystemId(void) const { return dvbFrontend->SubsystemId(); }
  bool IsTunedTo(const cChannel *Channel) const;
  void SetChannel(const cChannel *Channel);
  bool Locked(int TimeoutMs = 0);
  const cPositioner *Positioner(void) const { return positioner; }
  bool GetSignalStats(int &Valid, double *Strength = NULL, double *Cnr = NULL, double *BerPre = NULL, double *BerPost = NULL, double *Per = NULL, int *Status = NULL) const;
  int GetSignalStrength(void) const;
  int GetSignalQuality(void) const;
  };

cMutex cDvbTuner::bondMutex;

cDvbTuner::cDvbTuner(const cDvbDevice *Device, int Adapter, int Frontend)
{
  frontendType = SYS_UNDEFINED;
  device = Device;
  fd_frontend = -1;
  adapter = Adapter;
  frontend = Frontend;
  dvbFrontend = NULL;
  tuneTimeout = 0;
  lockTimeout = 0;
  lastTimeoutReport = 0;
  lastUncValue = 0;
  lastUncDelta = 0;
  lastUncChange = 0;
  lastDiseqc = NULL;
  diseqcOffset = 0;
  lastSource = 0;
  positioner = NULL;
  scr = NULL;
  lnbPowerTurnedOn = false;
  tunerStatus = tsIdle;
  bondedTuner = NULL;
  bondedMaster = false;
  cDvbFrontend *fe = new cDvbFrontend(adapter, frontend);
  dvbFrontends.Append(fe);
  numDeliverySystems = fe->NumDeliverySystems();
  numModulations = fe->NumModulations();
  cString FrontendNumbers = cString::sprintf("%d", frontend);
  // Check for multiple frontends:
  if (frontend == 0) {
     for (int i = 1; ; i++) {
         if (access(DvbName(DEV_DVB_FRONTEND, adapter, i), F_OK) == 0) {
            if (access(DvbName(DEV_DVB_DEMUX, adapter, i), F_OK) != 0) {
               fe = new cDvbFrontend(adapter, i);
               dvbFrontends.Append(fe);
               numDeliverySystems += fe->NumDeliverySystems();
               //numModulations += fe->NumModulations(); // looks like in multi frontend devices all frontends report the same modulations
               FrontendNumbers = cString::sprintf("%s+%d", *FrontendNumbers, i);
               }
            }
         else
            break;
         }
     }
  // Open default frontend:
  dvbFrontend = dvbFrontends[0];
  fd_frontend = dvbFrontend->Open();
  SetDescription("frontend %d/%s tuner", adapter, *FrontendNumbers);
  Start();
}

cDvbTuner::~cDvbTuner()
{
  tunerStatus = tsIdle;
  newSet.Broadcast();
  locked.Broadcast();
  Cancel(3);
  UnBond();
  /* looks like this irritates the SCR switch, so let's leave it out for now
  if (lastDiseqc && lastDiseqc->IsScr()) {
     unsigned int Frequency = 0;
     ExecuteDiseqc(lastDiseqc, &Frequency);
     }
  */
  for (int i = 0; i < dvbFrontends.Size(); i++)
      delete dvbFrontends[i];
}

bool cDvbTuner::ProvidesDeliverySystem(int DeliverySystem) const
{
  for (int i = 0; i < dvbFrontends.Size(); i++) {
      if (dvbFrontends[i]->ProvidesDeliverySystem(DeliverySystem))
         return true;
      }
  return false;
}

bool cDvbTuner::ProvidesModulation(int System, int StreamId, int Modulation) const
{
  for (int i = 0; i < dvbFrontends.Size(); i++) {
      if (dvbFrontends[i]->ProvidesModulation(System, StreamId, Modulation))
         return true;
      }
  return false;
}

bool cDvbTuner::ProvidesFrontend(const cChannel *Channel, bool Activate) const
{
  cDvbTransponderParameters dtp(Channel->Parameters());
  int DeliverySystem = GetRequiredDeliverySystem(Channel, &dtp);
  for (int i = 0; i < dvbFrontends.Size(); i++) {
      if (dvbFrontends[i]->ProvidesDeliverySystem(DeliverySystem) && dvbFrontends[i]->ProvidesModulation(dtp.System(), dtp.StreamId(), dtp.Modulation())) {
         if (Activate && dvbFrontend != dvbFrontends[i]) {
            cMutexLock MutexLock(&mutex);
            dvbFrontend->Close();
            dvbFrontend = dvbFrontends[i];
            fd_frontend = dvbFrontend->Open();
            frontend = i;
            dsyslog("using frontend %d/%d", adapter, frontend);
            lastUncValue = 0;
            lastUncDelta = 0;
            lastUncChange = 0;
            }
         return true;
         }
      }
  return false;
}

bool cDvbTuner::Bond(cDvbTuner *Tuner)
{
  cMutexLock MutexLock(&bondMutex);
  if (!bondedTuner) {
     ResetToneAndVoltage();
     bondedMaster = false; // makes sure we don't disturb an existing master
     bondedTuner = Tuner->bondedTuner ? Tuner->bondedTuner : Tuner;
     Tuner->bondedTuner = this;
     dsyslog("tuner %d/%d bonded with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
     return true;
     }
  else
     esyslog("ERROR: tuner %d/%d already bonded with tuner %d/%d, can't bond with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend, Tuner->adapter, Tuner->frontend);
  return false;
}

void cDvbTuner::UnBond(void)
{
  cMutexLock MutexLock(&bondMutex);
  if (cDvbTuner *t = bondedTuner) {
     dsyslog("tuner %d/%d unbonded from tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
     while (t->bondedTuner != this)
           t = t->bondedTuner;
     if (t == bondedTuner)
        t->bondedTuner = NULL;
     else
        t->bondedTuner = bondedTuner;
     bondedMaster = false; // another one will automatically become master whenever necessary
     bondedTuner = NULL;
     }
}

cString cDvbTuner::GetBondingParams(const cChannel *Channel) const
{
  if (!Channel)
     Channel = &channel;
  cDvbTransponderParameters dtp(Channel->Parameters());
  if (Setup.DiSEqC) {
     if (const cDiseqc *diseqc = Diseqcs.Get(device->DeviceNumber() + 1, Channel->Source(), Channel->Frequency(), dtp.Polarization(), NULL))
        return diseqc->Commands();
     }
  else {
     bool ToneOff = Channel->Frequency() < Setup.LnbSLOF;
     bool VoltOff = dtp.Polarization() == 'V' || dtp.Polarization() == 'R';
     return cString::sprintf("%c %c", ToneOff ? 't' : 'T', VoltOff ? 'v' : 'V');
     }
  return "";
}

bool cDvbTuner::BondingOk(const cChannel *Channel, bool ConsiderOccupied) const
{
  cMutexLock MutexLock(&bondMutex);
  if (cDvbTuner *t = bondedTuner) {
     cString BondingParams = GetBondingParams(Channel);
     do {
        if (t->device->Priority() > IDLEPRIORITY || ConsiderOccupied && t->device->Occupied()) {
           if (strcmp(BondingParams, t->GetBondedMaster()->GetBondingParams()) != 0)
              return false;
           }
        t = t->bondedTuner;
        } while (t != bondedTuner);
     }
  return true;
}

cDvbTuner *cDvbTuner::GetBondedMaster(void)
{
  if (!bondedTuner)
     return this; // an unbonded tuner is always "master"
  cMutexLock MutexLock(&bondMutex);
  if (bondedMaster)
     return this;
  // This tuner is bonded, but it's not the master, so let's see if there is a master at all:
  if (cDvbTuner *t = bondedTuner) {
     while (t != this) {
           if (t->bondedMaster)
              return t;
           t = t->bondedTuner;
           }
     }
  // None of the other bonded tuners is master, so make this one the master:
  bondedMaster = true;
  dsyslog("tuner %d/%d is now bonded master", adapter, frontend);
  return this;
}

bool cDvbTuner::IsTunedTo(const cChannel *Channel) const
{
  if (tunerStatus == tsIdle)
     return false; // not tuned to
  if (channel.Source() != Channel->Source() || channel.Transponder() != Channel->Transponder() || channel.Srate() != Channel->Srate())
     return false; // sufficient mismatch
  // Polarization is already checked as part of the Transponder.
  return strcmp(channel.Parameters(), Channel->Parameters()) == 0;
}

void cDvbTuner::SetChannel(const cChannel *Channel)
{
  if (Channel) {
     if (bondedTuner) {
        cMutexLock MutexLock(&bondMutex);
        cDvbTuner *BondedMaster = GetBondedMaster();
        if (BondedMaster == this) {
           if (strcmp(GetBondingParams(Channel), GetBondingParams()) != 0) {
              // switching to a completely different band, so set all others to idle:
              for (cDvbTuner *t = bondedTuner; t && t != this; t = t->bondedTuner)
                  t->SetChannel(NULL);
              }
           }
        else if (strcmp(GetBondingParams(Channel), BondedMaster->GetBondingParams()) != 0)
           BondedMaster->SetChannel(Channel);
        }
     cMutexLock MutexLock(&mutex);
     if (!IsTunedTo(Channel))
        tunerStatus = tsSet;
     diseqcOffset = 0;
     channel = *Channel;
     lastTimeoutReport = 0;
     newSet.Broadcast();
     }
  else {
     cMutexLock MutexLock(&mutex);
     tunerStatus = tsIdle;
     ResetToneAndVoltage();
     }
  if (bondedTuner && device->IsPrimaryDevice())
     cDevice::PrimaryDevice()->DelLivePids(); // 'device' is const, so we must do it this way
}

bool cDvbTuner::Locked(int TimeoutMs)
{
  bool isLocked = (tunerStatus >= tsLocked);
  if (isLocked || !TimeoutMs)
     return isLocked;

  cMutexLock MutexLock(&mutex);
  if (TimeoutMs && tunerStatus < tsLocked)
     locked.TimedWait(mutex, TimeoutMs);
  return tunerStatus >= tsLocked;
}

void cDvbTuner::ClearEventQueue(void) const
{
  cPoller Poller(fd_frontend);
  if (Poller.Poll(TUNER_POLL_TIMEOUT)) {
     dvb_frontend_event Event;
     while (ioctl(fd_frontend, FE_GET_EVENT, &Event) == 0)
           ; // just to clear the event queue - we'll read the actual status below
     }
}

bool cDvbTuner::GetFrontendStatus(fe_status_t &Status) const
{
  ClearEventQueue();
  Status = (fe_status_t)0; // initialize here to fix buggy drivers
  while (1) {
        if (ioctl(fd_frontend, FE_READ_STATUS, &Status) != -1)
           return true;
        if (errno != EINTR)
           break;
        }
  return false;
}

//#define DEBUG_SIGNALSTATS
//#define DEBUG_SIGNALSTRENGTH
//#define DEBUG_SIGNALQUALITY

bool cDvbTuner::GetSignalStats(int &Valid, double *Strength, double *Cnr, double *BerPre, double *BerPost, double *Per, int *Status) const
{
  ClearEventQueue();
  fe_status_t FeStatus = (fe_status_t)0; // initialize here to fix buggy drivers
  dtv_property Props[MAXFRONTENDCMDS];
  dtv_properties CmdSeq;
  memset(&Props, 0, sizeof(Props));
  memset(&CmdSeq, 0, sizeof(CmdSeq));
  CmdSeq.props = Props;
  Valid = DTV_STAT_VALID_NONE;
  if (ioctl(fd_frontend, FE_READ_STATUS, &FeStatus) != 0) {
     esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
     return false;
     }
  if (Status) {
     *Status = DTV_STAT_HAS_NONE;
     if (FeStatus & FE_HAS_SIGNAL)  *Status |= DTV_STAT_HAS_SIGNAL;
     if (FeStatus & FE_HAS_CARRIER) *Status |= DTV_STAT_HAS_CARRIER;
     if (FeStatus & FE_HAS_VITERBI) *Status |= DTV_STAT_HAS_VITERBI;
     if (FeStatus & FE_HAS_SYNC)    *Status |= DTV_STAT_HAS_SYNC;
     if (FeStatus & FE_HAS_LOCK)    *Status |= DTV_STAT_HAS_LOCK;
     Valid |= DTV_STAT_VALID_STATUS;
     }
  if (Strength)   SETCMD(DTV_STAT_SIGNAL_STRENGTH, 0);
  if (Cnr)        SETCMD(DTV_STAT_CNR, 0);
  if (BerPre)   { SETCMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0);
                  SETCMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0); }
  if (BerPost)  { SETCMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0);
                  SETCMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0); }
  if (Per)      { SETCMD(DTV_STAT_ERROR_BLOCK_COUNT, 0);
                  SETCMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0); }
  if (CmdSeq.num && ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
     esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
     return false;
     }
  int i = 0;
  if (Strength) {
     if (Props[i].u.st.len > 0) {
        switch (Props[i].u.st.stat[0].scale) {
          case FE_SCALE_DECIBEL:  *Strength = double(Props[i].u.st.stat[0].svalue) / 1000;
                                  Valid |= DTV_STAT_VALID_STRENGTH;
                                  break;
          default: ;
          }
        }
     i++;
     }
  if (Cnr) {
     if (Props[i].u.st.len > 0) {
        switch (Props[i].u.st.stat[0].scale) {
          case FE_SCALE_DECIBEL:  *Cnr = double(Props[i].u.st.stat[0].svalue) / 1000;
                                  Valid |= DTV_STAT_VALID_CNR;
                                  break;
          default: ;
          }
        }
     i++;
     }
  if (BerPre) {
     if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
        if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
           uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error bit count
           uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total bit count
           if (tbc > 0) {
              *BerPre = double(ebc) / tbc;
              Valid |= DTV_STAT_VALID_BERPRE;
              }
           }
        }
     i += 2;
     }
  if (BerPost) {
     if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
        if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
           uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error bit count
           uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total bit count
           if (tbc > 0) {
              *BerPost = double(ebc) / tbc;
              Valid |= DTV_STAT_VALID_BERPOST;
              }
           }
        }
     i += 2;
     }
  if (Per) {
     if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
        if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
           uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error block count
           uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total block count
           if (tbc > 0) {
              *Per = double(ebc) / tbc;
              Valid |= DTV_STAT_VALID_PER;
              }
           }
        }
     i += 2;
     }
#ifdef DEBUG_SIGNALSTATS
  fprintf(stderr, "FE %d/%d: API5 %04X", adapter, frontend, Valid);
  if ((Valid & DTV_STAT_VALID_STATUS)   != 0) fprintf(stderr, " STAT=%04X",     *Status);
  if ((Valid & DTV_STAT_VALID_STRENGTH) != 0) fprintf(stderr, " STR=%1.1fdBm",  *Strength);
  if ((Valid & DTV_STAT_VALID_CNR)      != 0) fprintf(stderr, " CNR=%1.1fdB",   *Cnr);
  if ((Valid & DTV_STAT_VALID_BERPRE)   != 0) fprintf(stderr, " BERPRE=%1.1e",  *BerPre);
  if ((Valid & DTV_STAT_VALID_BERPOST)  != 0) fprintf(stderr, " BERPOST=%1.1e", *BerPost);
  if ((Valid & DTV_STAT_VALID_PER)      != 0) fprintf(stderr, " PER=%1.1e",     *Per);
  fprintf(stderr, "\n");
#endif
  return Valid != DTV_STAT_VALID_NONE;
}

int dB1000toPercent(int dB1000, int Low, int High)
{
  // Convert the given value, which is in 1/1000 dBm, to a percentage in the
  // range 0..100. Anything below Low is considered 0%, and anything above
  // High counts as 100%.
  if (dB1000 < Low)
     return 0;
  if (dB1000 > High)
     return 100;
  // return 100 - 100 * (High - dB1000) / (High - Low); // linear conversion
  // return 100 - 100 * sqr(dB1000 - High) / sqr(Low - High); // quadratic conversion, see https://www.adriangranados.com/blog/dbm-to-percent-conversion
  double v = 10.0 * (dB1000 - High) / (Low - High); // avoids the sqr() function
  return 100 - v * v;
}

#define REF_S1(q1)                 (mod == QPSK)   ? q1 : 0
#define REF_S2(q1, q2, q3, q4)     (mod == QPSK)   ? q1 : (mod == PSK_8)  ? q2 : (mod == APSK_16) ? q3 : (mod == APSK_32) ? q4 : 0
#define REF_T1(q1, q2, q3)         (mod == QPSK)   ? q1 : (mod == QAM_16) ? q2 : (mod == QAM_64)  ? q3 : 0
#define REF_T2(q1, q2, q3, q4)     (mod == QPSK)   ? q1 : (mod == QAM_16) ? q2 : (mod == QAM_64)  ? q3 : (mod == QAM_256) ? q4 : 0
#define REF_C1(q1, q2, q3, q4, q5) (mod == QAM_16) ? q1 : (mod == QAM_32) ? q2 : (mod == QAM_64)  ? q3 : (mod == QAM_128) ? q4 : (mod == QAM_256) ? q5: 0

int StrengthToSSI(const cChannel *Channel, int Strength, int FeModulation, int FeCoderateH, int FeFec)
{
  // Strength in 0.001dBm (dBm x 1000)
  cDvbTransponderParameters dtp(Channel->Parameters());
  int ssi = 0; // 0-100
  int mod = (FeModulation >= 0) ? FeModulation : dtp.Modulation();
  int cod = (FeCoderateH >= 0) ? FeCoderateH : dtp.CoderateH(); // DVB-T
  int fec = (FeFec >= 0) ? FeFec : dtp.CoderateH();
  if (Channel->IsTerr()) {
     int pref = 0;
     // NorDig Unified Ver. 2.6 - 3.4.4.6 Page 43 ff.
     // reference values : pref-15dBm = 0%, pref+35dBm = 100%
     if (dtp.System() == DVB_SYSTEM_1) { // DVB-T
        fec = cod; // adjustment for DVB-T
        if (mod == QAM_AUTO) mod = QPSK;
        switch (fec) {  // dBm:        Q4  Q16  Q64
          case FEC_1_2: pref = REF_T1(-93, -87, -82); break;
          default:
          case FEC_2_3: pref = REF_T1(-91, -85, -80); break;
          case FEC_3_4: pref = REF_T1(-90, -84, -78); break;
          case FEC_5_6: pref = REF_T1(-89, -83, -77); break;
          case FEC_7_8: pref = REF_T1(-88, -82, -76); break;
          }
        }
     else { // DVB-T2
        if (mod == QAM_AUTO) mod = QAM_64;
        switch (fec) {  // dBm:        Q4  Q16  Q64 Q256
          case FEC_1_2: pref = REF_T2(-96, -91, -86, -82); break;
          default:
          case FEC_3_5: pref = REF_T2(-95, -89, -85, -80); break;
          case FEC_2_3: pref = REF_T2(-94, -88, -83, -78); break;
          case FEC_3_4: pref = REF_T2(-93, -87, -82, -76); break;
          case FEC_4_5: pref = REF_T2(-92, -86, -81, -75); break;
          case FEC_5_6: pref = REF_T2(-92, -86, -80, -74); break;
          }
        }
     if (pref) {
        int prel = (Strength / 1000) - pref;
        ssi = (prel < -15) ? 0 :
              (prel <   0) ? (prel + 15) * 2 / 3 :       //  0% -  10%
              (prel <  20) ? prel * 4 + 10 :             // 10% -  90%
              (prel <  35) ? (prel - 20) * 2 / 3 + 90 :  // 90% - 100%
              100;
#ifdef DEBUG_SIGNALSTRENGTH
        fprintf(stderr, "SSI-T: STR:%d, Pref:%d, Prel:%d, ssi:%d%%(sys:%d, mod:%d, fec:%d)\n", Strength, pref, prel, ssi, dtp.System(), mod, fec);
#endif
        }
     }
  else if (Channel->IsCable()) { // ! COMPLETELY UNTESTED !
     // Formula: pref(dB) = -174.0 + NoiseFigure + SymRef + CnRef
     // NoiseFigure = 6.5 dB;               -> Tuner specific - range: 3.5 .. 9.0 dB
     // SymRef = 10*log(6900000) = 68.5 dB; -> for Symbolrate of 6900 kSym/sec (TV: 6900, 6750 or 6111 kSym/sec)
     // ==> pref(dB) = -174.0 + 6.5 + 68.5 + CnRef[modulation]{20,23,26,29,32}; (+/- 3 dB tuner specific)
     if (mod == QAM_AUTO) mod = QAM_256;
     //                Q16  Q32  Q64 Q128 Q256
     int pref = REF_C1(-79, -76, -73, -70, -67);
     if (pref) {
        int prel = (Strength / 1000) - pref;
        ssi = (prel < -15) ? 0 :
              (prel <   0) ? (prel + 15) * 2 / 3 :       //  0% -  10%
              (prel <  20) ? prel * 4 + 10 :             // 10% -  90%
              (prel <  35) ? (prel - 20) * 2 / 3 + 90 :  // 90% - 100%
              100;
#ifdef DEBUG_SIGNALSTRENGTH
        fprintf(stderr, "SSI-C: STR:%d, Pref:%d, Prel:%d, ssi:%d%%(mod:%d)\n", Strength, pref, prel, ssi, mod);
#endif
        }
     }
  else if (Channel->IsSat())
     ssi = dB1000toPercent(Strength, -95000, -20000); // defaults
  return ssi;
}

// Due to missing values or the different meanings of the reported error rate, ber_sqi is currently not taken into account
#define IGNORE_BER 1
#define BER_ERROR_FREE (1000*1000*1000) // 1/10^-9

int SignalToSQI(const cChannel *Channel, int Signal, int Ber, int FeModulation, int FeCoderateH, int FeFec)
{
#if IGNORE_BER
  Ber = BER_ERROR_FREE; // assume/pretend to be biterror free
#endif
  // Signal in 0.001dB (dB x 1000)
  cDvbTransponderParameters dtp(Channel->Parameters());
  int sqi = 0; // 0-100
  int mod = (FeModulation >= 0) ? FeModulation : dtp.Modulation();
  int cod = (FeCoderateH >= 0) ? FeCoderateH : dtp.CoderateH(); // DVB-T
  int fec = (FeFec >= 0) ? FeFec : dtp.CoderateH();
  if (Channel->IsTerr()) { // QEF: BER 10^-6
     int cnref = 0;
     // NorDig Unified Ver. 2.6 - 3.4.4.7 Page 45 ff.
     // reference values for QEF (BER 10^-11 at MPEG2 demux input)
     if (dtp.System() == DVB_SYSTEM_1) { // DVB-T
        fec = cod; // adjustment for DVB-T
        if (mod == QAM_AUTO) mod = QPSK;
        switch (fec) {  // 0.1 dB      Q4  Q16  Q64 (Hierarchy=None)
          case FEC_1_2: cnref = REF_T1(51, 108, 165); break;
          default:
          case FEC_2_3: cnref = REF_T1(69, 131, 187); break;
          case FEC_3_4: cnref = REF_T1(79, 146, 202); break;
          case FEC_5_6: cnref = REF_T1(89, 156, 216); break;
          case FEC_7_8: cnref = REF_T1(97, 160, 225); break;
          }
        }
     else { // DVB-T2
        if (mod == QAM_AUTO) mod = QAM_64;
        switch (fec) {  // 0.1 dB      Q4  Q16  Q64 Q256
          case FEC_1_2: cnref = REF_T2(35,  87, 130, 170); break;
          default:
          case FEC_3_5: cnref = REF_T2(47, 101, 148, 194); break;
          case FEC_2_3: cnref = REF_T2(56, 114, 162, 208); break;
          case FEC_3_4: cnref = REF_T2(66, 125, 177, 229); break;
          case FEC_4_5: cnref = REF_T2(72, 133, 187, 243); break;
          case FEC_5_6: cnref = REF_T2(77, 138, 194, 251); break;
          }
        }
     if (cnref) {
        int cnrel = (Signal/100) - cnref; // 0.1 dB
        int ber_sqi = 100; // 100%
        int cnr_sqi = 0;   // 0%
        if (dtp.System() == DVB_SYSTEM_1) { // DVB-T
            ber_sqi = (Ber < 1000) ? 0 :           // > 10^-3
                      (Ber >= 10000000) ? 100 :    // <= 10^-7
                      (int)(20 * log10(Ber)) - 40; // 20*log10(1/BER)-40 -> 20% .. 100%
            // scale: -7dB/+3dB to reference-value
            cnr_sqi = (cnrel < -70) ? 0 :
                      (cnrel < +30) ? (100 + (cnrel - 30)) :
                      100;
            sqi = (cnr_sqi * ber_sqi) / 100;
            // alternative: stretched scale: cnref-7dB = 0%, 30dB = 100%
            // sqi = dB1000toPercent(Signal, (100*cnref)-7000, 30000);
            }
        else { // DVB-T2
            ber_sqi = (Ber < 10000)     ? 0 :             // > 10^-4
                      (Ber >= 10000000) ? 100 * 100 / 6 : // <= 10^-7 : 16.67% -> SQI 0% .. 100%
                      (100 * 100 / 15);                   //             6.67% -> SQI 0% .. 40% || 100%
            // scale: -3dB/+3dB to reference-value
            sqi = (cnrel <  -30) ? 0 :
                  (cnrel <= +30) ? (cnrel + 30) * ber_sqi / 1000 : // (0 .. 6) * 16,67 || 6.67
                  100;
            // alternative: stretched scale: cnref-3dB = 0%, 32dB = 100%
            // sqi = dB1000toPercent(Signal, (100*cnref)-3000, 32000);
            }
#ifdef DEBUG_SIGNALQUALITY
        fprintf(stderr, "SQI-T: SIG:%d, BER:%d, CNref:%d, CNrel:%d, bersqi:%d, sqi:%d%%(sys:%d, mod:%d, fec:%d)\n", Signal, Ber, cnref, cnrel, ber_sqi, sqi, dtp.System(), mod, fec);
#endif
        }
     }
  else if (Channel->IsCable()) { // ! COMPLETELY UNTESTED !
     if (mod == QAM_AUTO) mod = QAM_256;
         // 0.1 dB      Q16  Q32  Q64 Q128 Q256
     int cnref = REF_C1(200, 230, 260, 290, 320); // minimum for BER<10^-4
     if (cnref) {
        int cnrel = (Signal / 100) - cnref; // 0.1 dB
        int ber_sqi = (Ber < 1000)      ? 0 :      // > 10^-3
                      (Ber >= 10000000) ? 100 :    // <= 10^-7
                      (int)(20 * log10(Ber)) - 40; // 20*log10(1/BER)-40 -> 20% .. 100%
        // scale: -7dB/+3dB to reference-value
        int cnr_sqi = (cnrel < -70) ? 0 :
                      (cnrel < +30) ? (100 + (cnrel - 30)) :
                      100;
        sqi = (cnr_sqi * ber_sqi) / 100;
        // alternative: stretched scale: cnref-7dB = 0%, 40dB = 100%
        // sqi = dB1000toPercent(Signal, (100*cnref)-7000, 40000);
#ifdef DEBUG_SIGNALQUALITY
        dsyslog("SQI-C: SIG:%d, BER:%d, CNref:%d, CNrel:%d, bersqi:%d, sqi:%d%%(sys:%d, mod:%d, fec:%d)\n", Signal, Ber, cnref, cnrel, ber_sqi, sqi, dtp.System(), mod, fec);
#endif
        }
     }
  else if (Channel->IsSat()) {
    int cnref = 0;
    if (dtp.System() == DVB_SYSTEM_1) { // DVB-S
        if (mod == QAM_AUTO) mod = QPSK;
        switch (fec) {  // 0.1 dB:     Q4 : 10^-7
          case FEC_1_2: cnref = REF_S1(38); break;
          default:
          case FEC_2_3: cnref = REF_S1(56); break;
          case FEC_3_4: cnref = REF_S1(67); break;
          case FEC_5_6: cnref = REF_S1(77); break;
          case FEC_7_8: cnref = REF_S1(84); break;
          }
        if (cnref) {
           //cnrel = (Signal/100) - cnref; // 0.1 dB
           // scale: cnref-4dB = 0%, 15dB = 100%
           sqi = dB1000toPercent(Signal, (100*cnref)-4000, 15000);
#ifdef DEBUG_SIGNALQUALITY
           dsyslog("SQI-S1: SIG:%d, BER:%d, CNref:%d, sqi:%d%%(mod:%d, fec:%d)\n", Signal, Ber, cnref, sqi, mod, fec);
#endif
           }
        }
    else { // DVB-S2
        if (mod == QAM_AUTO) mod = QAM_64;
        switch (fec) {   // 0.1 dB       Q4   Q8 16A* 32A*
        //case FEC_1_4:  cnref = REF_S2(-14,  65,  90, 126); break;
        //case FEC_1_3:  cnref = REF_S2( -2,  65,  90, 126); break;
          case FEC_2_5:  cnref = REF_S2(  7,  65,  90, 126); break;
          case FEC_1_2:  cnref = REF_S2( 20,  65,  90, 126); break;
          case FEC_3_5:  cnref = REF_S2( 32,  65,  90, 126); break;
          default:
          case FEC_2_3:  cnref = REF_S2( 41,  76,  90, 126); break;
          case FEC_3_4:  cnref = REF_S2( 50,  66, 102, 126); break;
          case FEC_4_5:  cnref = REF_S2( 57,  89, 110, 136); break;
          case FEC_5_6:  cnref = REF_S2( 62, 104, 116, 143); break;
          case FEC_8_9:  cnref = REF_S2( 72, 117, 129, 157); break;
          case FEC_9_10: cnref = REF_S2( 74, 120, 131, 161); break;
          }
        if (cnref) {
           // cnrel = (Signal/100) - cnref; // 0.1 dB
           // scale: cnref-4dB = 0%, 20dB = 100%
           sqi = dB1000toPercent(Signal, (100*cnref)-4000, 20000);
#ifdef DEBUG_SIGNALQUALITY
           dsyslog("SQI-S2: SIG:%d, BER:%d, CNref:%d, sqi:%d%%(mod:%d, fec:%d)\n", Signal, Ber, cnref, sqi, mod, fec);
#endif
           }
        }
  }
  return sqi;
}

int cDvbTuner::GetSignalStrength(void) const
{
  ClearEventQueue();
  // Try DVB API 5:
  for (int i = 0; i < 1; i++) { // just a trick to break out with 'continue' ;-)
      dtv_property Props[MAXFRONTENDCMDS];
      dtv_properties CmdSeq;
      memset(&Props, 0, sizeof(Props));
      memset(&CmdSeq, 0, sizeof(CmdSeq));
      CmdSeq.props = Props;
      SETCMD(DTV_STAT_SIGNAL_STRENGTH, 0);
      SETCMD(DTV_MODULATION, 0);
      SETCMD(DTV_CODE_RATE_HP, 0); // DVB-T only
      SETCMD(DTV_INNER_FEC, 0);
      if (ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
         esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
         return -1;
         }
      int FeMod = (Props[1].u.st.len > 0) ? (int)Props[1].u.data : -1;
      int FeCod = (Props[2].u.st.len > 0) ? (int)Props[2].u.data : -1;
      int FeFec = (Props[3].u.st.len > 0) ? (int)Props[3].u.data : -1;
      int Signal = 0;
      if (Props[0].u.st.len > 0) {
         switch (Props[0].u.st.stat[0].scale) {
           case FE_SCALE_DECIBEL:  Signal = StrengthToSSI(&channel, Props[0].u.st.stat[0].svalue, FeMod, FeCod, FeFec);
                                   break;
           case FE_SCALE_RELATIVE: Signal = 100 * Props[0].u.st.stat[0].uvalue / 0xFFFF;
                                   break;
           default: ;
           }
#ifdef DEBUG_SIGNALSTRENGTH
         fprintf(stderr, "FE %d/%d: API5 %d %08X %.1f S = %d\n", adapter, frontend, Props[0].u.st.stat[0].scale, int(Props[0].u.st.stat[0].svalue), int(Props[0].u.st.stat[0].svalue) / 1000.0, Signal);
#endif
         }
      else
         continue;
      return Signal;
      }
  // Fall back to DVB API 3:
  uint16_t Signal;
  while (1) {
        if (ioctl(fd_frontend, FE_READ_SIGNAL_STRENGTH, &Signal) != -1)
           break;
        if (errno != EINTR)
           return -1;
        }
  uint16_t MaxSignal = 0xFFFF; // Let's assume the default is using the entire range.
  // Use the subsystemId to identify individual devices in case they need
  // special treatment to map their Signal value into the range 0...0xFFFF.
  switch (dvbFrontend->SubsystemId()) {
    case 0x13C21019: // TT-budget S2-3200 (DVB-S/DVB-S2)
    case 0x1AE40001: // TechniSat SkyStar HD2 (DVB-S/DVB-S2)
                     MaxSignal = 670; break;
    }
  int s = int(Signal) * 100 / MaxSignal;
  if (s > 100)
     s = 100;
#ifdef DEBUG_SIGNALSTRENGTH
  fprintf(stderr, "FE %d/%d: API3 %08X S = %04X %04X %3d%%\n", adapter, frontend, dvbFrontend->SubsystemId(), MaxSignal, Signal, s);
#endif
  return s;
}

#define LOCK_THRESHOLD 5 // indicates that all 5 FE_HAS_* flags are set

int cDvbTuner::GetSignalQuality(void) const
{
  // Try DVB API 5:
  for (int i = 0; i < 1; i++) { // just a trick to break out with 'continue' ;-)
      dtv_property Props[MAXFRONTENDCMDS];
      dtv_properties CmdSeq;
      memset(&Props, 0, sizeof(Props));
      memset(&CmdSeq, 0, sizeof(CmdSeq));
      CmdSeq.props = Props;
      SETCMD(DTV_STAT_CNR, 0);
      SETCMD(DTV_MODULATION, 0);
      SETCMD(DTV_CODE_RATE_HP, 0); // DVB-T only
      SETCMD(DTV_INNER_FEC, 0);
      SETCMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0);
      SETCMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0);
      if (ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
         esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
         return -1;
         }
      int FeMod = (Props[1].u.st.len > 0) ? (int)Props[1].u.data : -1;
      int FeCod = (Props[2].u.st.len > 0) ? (int)Props[2].u.data : -1;
      int FeFec = (Props[3].u.st.len > 0) ? (int)Props[3].u.data : -1;
      int Ber = BER_ERROR_FREE; // 1/10^-9
      if (Props[4].u.st.len > 0 && Props[4].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[5].u.st.len > 0 && Props[5].u.st.stat[0].scale == FE_SCALE_COUNTER) {
         uint64_t ebc = Props[4].u.st.stat[0].uvalue; // error bit count
         uint64_t tbc = Props[5].u.st.stat[0].uvalue; // total bit count
         if (ebc > 0) {
            uint64_t BerRev = tbc / ebc; // reversed, for integer arithmetic
            if (BerRev < BER_ERROR_FREE)
               Ber = (int)BerRev;
            }
         }
      int Cnr = 0;
      if (Props[0].u.st.len > 0) {
         switch (Props[0].u.st.stat[0].scale) {
           case FE_SCALE_DECIBEL:  Cnr = SignalToSQI(&channel, Props[0].u.st.stat[0].svalue, Ber, FeMod, FeCod, FeFec);
                                   break;
           case FE_SCALE_RELATIVE: Cnr = 100 * Props[0].u.st.stat[0].uvalue / 0xFFFF;
                                   break;
           default: ;
           }
#ifdef DEBUG_SIGNALQUALITY
         fprintf(stderr, "FE %d/%d: API5 %d %08X %.1f Q = %d\n", adapter, frontend, Props[0].u.st.stat[0].scale, int(Props[0].u.st.stat[0].svalue), int(Props[0].u.st.stat[0].svalue) / 1000.0, Cnr);
#endif
         }
      else
         continue;
      return Cnr;
      }
  // Fall back to DVB API 3:
  fe_status_t Status;
  if (GetFrontendStatus(Status)) {
     // Actually one would expect these checks to be done from FE_HAS_SIGNAL to FE_HAS_LOCK, but some drivers (like the stb0899) are broken, so FE_HAS_LOCK is the only one that (hopefully) is generally reliable...
     if ((Status & FE_HAS_LOCK) == 0) {
        if ((Status & FE_HAS_SIGNAL) == 0)
           return 0;
        if ((Status & FE_HAS_CARRIER) == 0)
           return 1;
        if ((Status & FE_HAS_VITERBI) == 0)
           return 2;
        if ((Status & FE_HAS_SYNC) == 0)
           return 3;
        return 4;
        }
#ifdef DEBUG_SIGNALQUALITY
     bool HasSnr = true;
#endif
     uint16_t Snr;
     while (1) {
           if (ioctl(fd_frontend, FE_READ_SNR, &Snr) != -1)
              break;
           if (errno != EINTR) {
              Snr = 0xFFFF;
#ifdef DEBUG_SIGNALQUALITY
              HasSnr = false;
#endif
              break;
              }
           }
#ifdef DEBUG_SIGNALQUALITY
     bool HasBer = true;
#endif
     uint32_t Ber;
     while (1) {
           if (ioctl(fd_frontend, FE_READ_BER, &Ber) != -1)
              break;
           if (errno != EINTR) {
              Ber = 0;
#ifdef DEBUG_SIGNALQUALITY
              HasBer = false;
#endif
              break;
              }
           }
#ifdef DEBUG_SIGNALQUALITY
     bool HasUnc = true;
#endif
     uint32_t Unc;
     while (1) {
           if (ioctl(fd_frontend, FE_READ_UNCORRECTED_BLOCKS, &Unc) != -1) {
              if (Unc != lastUncValue) {
#ifdef DEBUG_SIGNALQUALITY
                 fprintf(stderr, "FE %d/%d: API3 UNC = %u %u %u\n", adapter, frontend, Unc, lastUncValue, lastUncDelta);
#endif
                 lastUncDelta = (Unc >= lastUncValue) ? Unc - lastUncValue : lastUncValue - Unc;
                 lastUncValue = Unc;
                 lastUncChange = time(NULL);
                 }
              // The number of uncorrected blocks is a counter, which is normally
              // at a constant value and only increases if there are new uncorrected
              // blocks. So a change in the Unc value indicates reduced signal quality.
              // Whenever the Unc counter changes, we take the delta between the old
              // and new value into account for calculating the overall signal quality.
              // The impact of Unc is considered for 2 seconds, and after that it is
              // bisected with every passing second in order to phase it out. Otherwise
              // once one or more uncorrected blocks occur, the signal quality would
              // be considered low even if there haven't been any more uncorrected bocks
              // for quite a while.
              Unc = lastUncDelta;
              if (Unc > 0) {
                 int t = time(NULL) - lastUncChange - 2;
                 if (t > 0)
                    Unc >>= min(t, int(sizeof(Unc) * 8 - 1));
                 if (Unc == 0)
                    lastUncDelta = 0;
#ifdef DEBUG_SIGNALQUALITY
                 fprintf(stderr, "FE %d/%d: API3 UNC = %u\n", adapter, frontend, Unc);
#endif
                 }
              break;
              }
           if (errno != EINTR) {
              Unc = 0;
#ifdef DEBUG_SIGNALQUALITY
              HasUnc = false;
#endif
              break;
              }
           }
     uint16_t MinSnr = 0x0000;
     uint16_t MaxSnr = 0xFFFF; // Let's assume the default is using the entire range.
     // Use the subsystemId to identify individual devices in case they need
     // special treatment to map their Snr value into the range 0...0xFFFF.
     switch (dvbFrontend->SubsystemId()) {
       case 0x13C21019: // TT-budget S2-3200 (DVB-S/DVB-S2)
       case 0x1AE40001: // TechniSat SkyStar HD2 (DVB-S/DVB-S2)
                        if (frontendType == SYS_DVBS2) {
                           MinSnr = 10;
                           MaxSnr = 70;
                           }
                        else
                           MaxSnr = 200;
                        break;
       case 0x20130245: // PCTV Systems PCTV 73ESE
       case 0x2013024F: // PCTV Systems nanoStick T2 290e
                        MaxSnr = 255; break;
       }
     int a = int(constrain(Snr, MinSnr, MaxSnr)) * 100 / (MaxSnr - MinSnr);
     int b = 100 - (Unc * 10 + (Ber / 256) * 5);
     if (b < 0)
        b = 0;
     int q = LOCK_THRESHOLD + a * b * (100 - LOCK_THRESHOLD) / 100 / 100;
     if (q > 100)
        q = 100;
#ifdef DEBUG_SIGNALQUALITY
     fprintf(stderr, "FE %d/%d: API3 %08X Q = %04X %04X %d %5d %5d %3d%%\n", adapter, frontend, dvbFrontend->SubsystemId(), MaxSnr, Snr, HasSnr, HasBer ? int(Ber) : -1, HasUnc ? int(Unc) : -1, q);
#endif
     return q;
     }
  return -1;
}

static unsigned int FrequencyToHz(unsigned int f)
{
  while (f && f < 1000000)
        f *= 1000;
  return f;
}

cPositioner *cDvbTuner::GetPositioner(void)
{
  if (!positioner) {
     positioner = cPositioner::GetPositioner();
     positioner->SetFrontend(fd_frontend);
     }
  return positioner;
}

void cDvbTuner::ExecuteDiseqc(const cDiseqc *Diseqc, int *Frequency)
{
  if (!lnbPowerTurnedOn) {
     CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
     lnbPowerTurnedOn = true;
     }
  static cMutex Mutex;
  if (Diseqc->IsScr())
     Mutex.Lock();
  struct dvb_diseqc_master_cmd cmd;
  const char *CurrentAction = NULL;
  cPositioner *Positioner = NULL;
  bool Break = false;
  for (int i = 0; !Break; i++) {
      cmd.msg_len = sizeof(cmd.msg);
      cDiseqc::eDiseqcActions da = Diseqc->Execute(&CurrentAction, cmd.msg, &cmd.msg_len, scr, Frequency);
      if (da == cDiseqc::daNone) {
         diseqcOffset = 0;
         break;
         }
      bool d = i >= diseqcOffset;
      switch (da) {
        case cDiseqc::daToneOff:   if (d) CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF)); break;
        case cDiseqc::daToneOn:    if (d) CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_ON)); break;
        case cDiseqc::daVoltage13: if (d) CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); break;
        case cDiseqc::daVoltage18: if (d) CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_18)); break;
        case cDiseqc::daMiniA:     if (d) CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_A)); break;
        case cDiseqc::daMiniB:     if (d) CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_B)); break;
        case cDiseqc::daCodes:     if (d) CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd)); break;
        case cDiseqc::daPositionN: if ((Positioner = GetPositioner()) != NULL) {
                                      if (d) {
                                         Positioner->GotoPosition(Diseqc->Position(), cSource::Position(channel.Source()));
                                         Break = Positioner->IsMoving();
                                         }
                                      }
                                   break;
        case cDiseqc::daPositionA: if ((Positioner = GetPositioner()) != NULL) {
                                      if (d) {
                                         Positioner->GotoAngle(cSource::Position(channel.Source()));
                                         Break = Positioner->IsMoving();
                                         }
                                      }
                                   break;
        case cDiseqc::daScr:
        case cDiseqc::daWait:      break;
        default: esyslog("ERROR: unknown diseqc command %d", da);
        }
      if (Break)
         diseqcOffset = i + 1;
      }
  positioner = Positioner;
  if (scr && !Break)
     ResetToneAndVoltage(); // makes sure we don't block the bus!
  if (Diseqc->IsScr())
     Mutex.Unlock();
}

void cDvbTuner::ResetToneAndVoltage(void)
{
  CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, bondedTuner ? SEC_VOLTAGE_OFF : SEC_VOLTAGE_13));
  CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF));
}

bool cDvbTuner::SetFrontend(void)
{
  dtv_property Props[MAXFRONTENDCMDS];
  memset(&Props, 0, sizeof(Props));
  dtv_properties CmdSeq;
  memset(&CmdSeq, 0, sizeof(CmdSeq));
  CmdSeq.props = Props;
  SETCMD(DTV_CLEAR, 0);
  if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
     esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
     return false;
     }
  CmdSeq.num = 0;

  cDvbTransponderParameters dtp(channel.Parameters());

  // Determine the required frontend type:
  frontendType = GetRequiredDeliverySystem(&channel, &dtp);
  if (frontendType == SYS_UNDEFINED)
     return false;

  SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
  if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2) {
     int frequency = channel.Frequency();
     if (Setup.DiSEqC) {
        if (const cDiseqc *diseqc = Diseqcs.Get(device->DeviceNumber() + 1, channel.Source(), frequency, dtp.Polarization(), &scr)) {
           frequency -= diseqc->Lof();
           if (diseqc != lastDiseqc || diseqc->IsScr() || diseqc->Position() >= 0 && channel.Source() != lastSource) {
              if (IsBondedMaster()) {
                 ExecuteDiseqc(diseqc, &frequency);
                 if (frequency == 0)
                    return false;
                 }
              else
                 ResetToneAndVoltage();
              lastDiseqc = diseqc;
              lastSource = channel.Source();
              }
           }
        else {
           esyslog("ERROR: no DiSEqC parameters found for channel %d (%s)", channel.Number(), channel.Name());
           return false;
           }
        }
     else {
        int tone = SEC_TONE_OFF;
        if (frequency < Setup.LnbSLOF) {
           frequency -= Setup.LnbFrequLo;
           tone = SEC_TONE_OFF;
           }
        else {
           frequency -= Setup.LnbFrequHi;
           tone = SEC_TONE_ON;
           }
        int volt = (dtp.Polarization() == 'V' || dtp.Polarization() == 'R') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;
        if (!IsBondedMaster()) {
           tone = SEC_TONE_OFF;
           volt = SEC_VOLTAGE_13;
           }
        CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, volt));
        CHECK(ioctl(fd_frontend, FE_SET_TONE, tone));
        }
     frequency = abs(frequency); // Allow for C-band, where the frequency is less than the LOF

     // DVB-S/DVB-S2 (common parts)
     SETCMD(DTV_FREQUENCY, frequency * 1000UL);
     SETCMD(DTV_MODULATION, dtp.Modulation());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
     SETCMD(DTV_INNER_FEC, dtp.CoderateH());
     SETCMD(DTV_INVERSION, dtp.Inversion());
     if (frontendType == SYS_DVBS2) {
        // DVB-S2
        SETCMD(DTV_PILOT, dtp.Pilot());
        SETCMD(DTV_ROLLOFF, dtp.RollOff());
        if (DvbApiVersion >= 0x0508)
           SETCMD(DTV_STREAM_ID, dtp.StreamId());
        }
     else {
        // DVB-S
        SETCMD(DTV_ROLLOFF, ROLLOFF_35); // DVB-S always has a ROLLOFF of 0.35
        }

     tuneTimeout = DVBS_TUNE_TIMEOUT;
     lockTimeout = DVBS_LOCK_TIMEOUT;
     }
  else if (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B) {
     // DVB-C
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
     SETCMD(DTV_INNER_FEC, dtp.CoderateH());
     SETCMD(DTV_MODULATION, dtp.Modulation());

     tuneTimeout = DVBC_TUNE_TIMEOUT;
     lockTimeout = DVBC_LOCK_TIMEOUT;
     }
  else if (frontendType == SYS_DVBT || frontendType == SYS_DVBT2) {
     // DVB-T/DVB-T2 (common parts)
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_BANDWIDTH_HZ, dtp.Bandwidth());
     SETCMD(DTV_CODE_RATE_HP, dtp.CoderateH());
     SETCMD(DTV_CODE_RATE_LP, dtp.CoderateL());
     SETCMD(DTV_MODULATION, dtp.Modulation());
     SETCMD(DTV_TRANSMISSION_MODE, dtp.Transmission());
     SETCMD(DTV_GUARD_INTERVAL, dtp.Guard());
     SETCMD(DTV_HIERARCHY, dtp.Hierarchy());
     if (frontendType == SYS_DVBT2) {
        // DVB-T2
        SETCMD(DTV_INNER_FEC, dtp.CoderateH());
        if (DvbApiVersion >= 0x0508) {
           SETCMD(DTV_STREAM_ID, dtp.StreamId());
           }
        else if (DvbApiVersion >= 0x0503)
           SETCMD(DTV_DVBT2_PLP_ID_LEGACY, dtp.StreamId());
        }
     tuneTimeout = DVBT_TUNE_TIMEOUT;
     lockTimeout = DVBT_LOCK_TIMEOUT;
     }
  else if (frontendType == SYS_ATSC) {
     // ATSC
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_MODULATION, dtp.Modulation());

     tuneTimeout = ATSC_TUNE_TIMEOUT;
     lockTimeout = ATSC_LOCK_TIMEOUT;
     }
  else {
     esyslog("ERROR: attempt to set channel with unknown DVB frontend type");
     return false;
     }
  SETCMD(DTV_TUNE, 0);
  if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
     esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
     return false;
     }
  return true;
}

void cDvbTuner::Action(void)
{
  cTimeMs Timer;
  bool LostLock = false;
  fe_status_t Status = (fe_status_t)0;
  while (Running()) {
        int WaitTime = 1000;
        fe_status_t NewStatus;
        if (GetFrontendStatus(NewStatus))
           Status = NewStatus;
        cMutexLock MutexLock(&mutex);
        switch (tunerStatus) {
          case tsIdle:
               break; // we want the TimedWait() below!
          case tsSet:
               tunerStatus = SetFrontend() ? tsPositioning : tsIdle;
               continue;
          case tsPositioning:
               if (positioner) {
                  if (positioner->IsMoving())
                     break; // we want the TimedWait() below!
                  else if (diseqcOffset) {
                     lastDiseqc = NULL;
                     tunerStatus = tsSet; // have it process the rest of the DiSEqC sequence
                     continue;
                     }
                  }
               tunerStatus = tsTuned;
               device->SectionHandler()->SetStatus(true); // may have been turned off when retuning
               Timer.Set(tuneTimeout + (scr ? rand() % SCR_RANDOM_TIMEOUT : 0));
               if (positioner)
                  continue;
               // otherwise run directly into tsTuned...
          case tsTuned:
               if (Timer.TimedOut()) {
                  tunerStatus = tsSet;
                  lastDiseqc = NULL;
                  lastSource = 0;
                  if (time(NULL) - lastTimeoutReport > 60) { // let's not get too many of these
                     if (channel.Number()) // no need to log this for transponders that are announced in the NIT but are not currently broadcasting
                        isyslog("frontend %d/%d timed out while tuning to channel %d (%s), tp %d", adapter, frontend, channel.Number(), channel.Name(), channel.Transponder());
                     lastTimeoutReport = time(NULL);
                     }
                  continue;
                  }
               WaitTime = 100; // allows for a quick change from tsTuned to tsLocked
               // run into tsLocked...
          case tsLocked:
               if (Status & FE_REINIT) {
                  tunerStatus = tsSet;
                  lastDiseqc = NULL;
                  lastSource = 0;
                  isyslog("frontend %d/%d was reinitialized", adapter, frontend);
                  lastTimeoutReport = 0;
                  continue;
                  }
               else if (Status & FE_HAS_LOCK) {
                  if (LostLock) {
                     isyslog("frontend %d/%d regained lock on channel %d (%s), tp %d", adapter, frontend, channel.Number(), channel.Name(), channel.Transponder());
                     LostLock = false;
                     }
                  if (device->SdtFilter()->TransponderWrong()) {
                     isyslog("frontend %d/%d is not receiving transponder %d for channel %d (%s) - retuning", adapter, frontend, channel.Transponder(), channel.Number(), channel.Name());
                     device->SectionHandler()->SetStatus(false);
                     tunerStatus = tsSet;
                     lastDiseqc = NULL;
                     lastSource = 0;
                     continue;
                     }
                  tunerStatus = tsLocked;
                  locked.Broadcast();
                  lastTimeoutReport = 0;
                  }
               else if (tunerStatus == tsLocked) {
                  LostLock = true;
                  isyslog("frontend %d/%d lost lock on channel %d (%s), tp %d", adapter, frontend, channel.Number(), channel.Name(), channel.Transponder());
                  tunerStatus = tsTuned;
                  Timer.Set(lockTimeout);
                  lastTimeoutReport = 0;
                  continue;
                  }
               break;
          default: esyslog("ERROR: unknown tuner status %d", tunerStatus);
          }
        newSet.TimedWait(mutex, WaitTime);
        }
}

// --- cDvbSourceParam -------------------------------------------------------

class cDvbSourceParam : public cSourceParam {
private:
  int param;
  int srate;
  cDvbTransponderParameters dtp;
public:
  cDvbSourceParam(char Source, const char *Description);
  virtual void SetData(cChannel *Channel);
  virtual void GetData(cChannel *Channel);
  virtual cOsdItem *GetOsdItem(void);
  };

cDvbSourceParam::cDvbSourceParam(char Source, const char *Description)
:cSourceParam(Source, Description)
{
  param = 0;
  srate = 0;
}

void cDvbSourceParam::SetData(cChannel *Channel)
{
  srate = Channel->Srate();
  dtp.Parse(Channel->Parameters());
  param = 0;
}

void cDvbSourceParam::GetData(cChannel *Channel)
{
  Channel->SetTransponderData(Channel->Source(), Channel->Frequency(), srate, dtp.ToString(Source()), true);
}

cOsdItem *cDvbSourceParam::GetOsdItem(void)
{
  char type = Source();
  const tDvbParameterMap *SystemValues = type == 'S' ? SystemValuesSat : SystemValuesTerr;
#undef ST
#define ST(s) if (strchr(s, type))
  switch (param++) {
    case  0: ST("  S ")  return new cMenuEditChrItem( tr("Polarization"), &dtp.polarization, "HVLR");             else return GetOsdItem();
    case  1: ST("  ST")  return new cMenuEditMapItem( tr("System"),       &dtp.system,       SystemValues);       else return GetOsdItem();
    case  2: ST(" CS ")  return new cMenuEditIntItem( tr("Srate"),        &srate);                                else return GetOsdItem();
    case  3: ST("ACST")  return new cMenuEditMapItem( tr("Inversion"),    &dtp.inversion,    InversionValues);    else return GetOsdItem();
    case  4: ST(" CST")  return new cMenuEditMapItem( tr("CoderateH"),    &dtp.coderateH,    CoderateValues);     else return GetOsdItem();
    case  5: ST("   T")  return new cMenuEditMapItem( tr("CoderateL"),    &dtp.coderateL,    CoderateValues);     else return GetOsdItem();
    case  6: ST("ACST")  return new cMenuEditMapItem( tr("Modulation"),   &dtp.modulation,   ModulationValues);   else return GetOsdItem();
    case  7: ST("   T")  return new cMenuEditMapItem( tr("Bandwidth"),    &dtp.bandwidth,    BandwidthValues);    else return GetOsdItem();
    case  8: ST("   T")  return new cMenuEditMapItem( tr("Transmission"), &dtp.transmission, TransmissionValues); else return GetOsdItem();
    case  9: ST("   T")  return new cMenuEditMapItem( tr("Guard"),        &dtp.guard,        GuardValues);        else return GetOsdItem();
    case 10: ST("   T")  return new cMenuEditMapItem( tr("Hierarchy"),    &dtp.hierarchy,    HierarchyValues);    else return GetOsdItem();
    case 11: ST("  S ")  return new cMenuEditMapItem( tr("Rolloff"),      &dtp.rollOff,      RollOffValues);      else return GetOsdItem();
    case 12: ST("  ST")  return new cMenuEditIntItem( tr("StreamId"),     &dtp.streamId,     0, 255);             else return GetOsdItem();
    case 13: ST("  S ")  return new cMenuEditMapItem( tr("Pilot"),        &dtp.pilot,        PilotValues);        else return GetOsdItem();
    case 14: ST("   T")  return new cMenuEditIntItem( tr("T2SystemId"),   &dtp.t2systemId,   0, 65535);           else return GetOsdItem();
    case 15: ST("   T")  return new cMenuEditIntItem( tr("SISO/MISO"),    &dtp.sisoMiso,     0, 1);               else return GetOsdItem();
    default: return NULL;
    }
  return NULL;
}

// --- cDvbDevice ------------------------------------------------------------

bool cDvbDevice::useDvbDevices = true;
int cDvbDevice::setTransferModeForDolbyDigital = 1;
cMutex cDvbDevice::bondMutex;

cDvbDevice::cDvbDevice(int Adapter, int Frontend)
{
  adapter = Adapter;
  frontend = Frontend;
  ciAdapter = NULL;
  dvbTuner = NULL;
  bondedDevice = NULL;
  needsDetachBondedReceivers = false;
  tsBuffer = NULL;

  // Common Interface:

  fd_ca = DvbOpen(DEV_DVB_CA, adapter, frontend, O_RDWR);
  if (fd_ca >= 0)
     ciAdapter = cDvbCiAdapter::CreateCiAdapter(this, fd_ca);
  checkTsBuffer = false;

  // The DVR device (will be opened and closed as needed):

  fd_dvr = -1;

  // We only check the devices that must be present - the others will be checked before accessing them://XXX

  dvbTuner = new cDvbTuner(this, adapter, frontend);

  StartSectionHandler();
}

cDvbDevice::~cDvbDevice()
{
  StopSectionHandler();
  delete dvbTuner;
  delete ciAdapter;
  UnBond();
  // We're not explicitly closing any device files here, since this sometimes
  // caused segfaults. Besides, the program is about to terminate anyway...
}

cString DvbName(const char *Name, int Adapter, int Frontend)
{
  return cString::sprintf("%s/%s%d/%s%d", DEV_DVB_BASE, DEV_DVB_ADAPTER, Adapter, Name, Frontend);
}

int DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError)
{
  cString FileName = DvbName(Name, Adapter, Frontend);
  int fd = open(FileName, Mode);
  if (fd < 0 && ReportError)
     LOG_ERROR_STR(*FileName);
  return fd;
}

int cDvbDevice::Frontend(void) const
{
  return dvbTuner ? dvbTuner->Frontend() : frontend;
}

bool cDvbDevice::Exists(int Adapter, int Frontend)
{
  cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
  if (access(FileName, F_OK) == 0) {
     int f = open(FileName, O_RDONLY);
     if (f >= 0) {
        close(f);
        return true;
        }
     else if (errno != ENODEV && errno != EINVAL)
        LOG_ERROR_STR(*FileName);
     }
  else if (errno != ENOENT)
     LOG_ERROR_STR(*FileName);
  return false;
}

bool cDvbDevice::Probe(int Adapter, int Frontend)
{
  cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
  dsyslog("probing %s", *FileName);
  for (cDvbDeviceProbe *dp = DvbDeviceProbes.First(); dp; dp = DvbDeviceProbes.Next(dp)) {
      if (dp->Probe(Adapter, Frontend))
         return true; // a plugin has created the actual device
      }
  dsyslog("creating cDvbDevice");
  new cDvbDevice(Adapter, Frontend); // it's a "budget" device
  return true;
}

cString cDvbDevice::DeviceType(void) const
{
  if (dvbTuner)
     return GetDeliverySystemName(dvbTuner->FrontendType());
  return "";
}

cString cDvbDevice::DeviceName(void) const
{
  if (dvbTuner)
     return dvbTuner->FrontendName();
  return "";
}

bool cDvbDevice::Initialize(void)
{
  new cDvbSourceParam('A', "ATSC");
  new cDvbSourceParam('C', "DVB-C");
  new cDvbSourceParam('S', "DVB-S");
  new cDvbSourceParam('T', "DVB-T");
  cStringList Nodes;
  cReadDir DvbDir(DEV_DVB_BASE);
  if (DvbDir.Ok()) {
     struct dirent *a;
     while ((a = DvbDir.Next()) != NULL) {
           if (strstr(a->d_name, DEV_DVB_ADAPTER) == a->d_name) {
              int Adapter = strtol(a->d_name + strlen(DEV_DVB_ADAPTER), NULL, 10);
              cReadDir AdapterDir(AddDirectory(DEV_DVB_BASE, a->d_name));
              if (AdapterDir.Ok()) {
                 struct dirent *f;
                 while ((f = AdapterDir.Next()) != NULL) {
                       if (strstr(f->d_name, DEV_DVB_FRONTEND) == f->d_name) {
                          int Frontend = strtol(f->d_name + strlen(DEV_DVB_FRONTEND), NULL, 10);
                          if (access(DvbName(DEV_DVB_DEMUX, Adapter, Frontend), F_OK) == 0) { // we only create devices for actual demuxes
                             dsyslog("detected /dev/dvb/adapter%d/frontend%d", Adapter, Frontend);
                             Nodes.Append(strdup(cString::sprintf("%2d %2d", Adapter, Frontend)));
                             }
                          }
                       }
                 }
              }
           }
     }
  int Found = 0;
  int Used = 0;
  if (Nodes.Size() > 0) {
     Nodes.Sort();
     for (int i = 0; i < Nodes.Size(); i++) {
         int Adapter;
         int Frontend;
         if (2 == sscanf(Nodes[i], "%d %d", &Adapter, &Frontend)) {
            if (Exists(Adapter, Frontend)) {
               if (Found < MAXDEVICES) {
                  Found++;
                  if (useDvbDevices && UseDevice(NextCardIndex())) {
                     if (Probe(Adapter, Frontend))
                        Used++;
                     }
                  else {
                     dsyslog("skipped /dev/dvb/adapter%d/frontend%d", Adapter, Frontend);
                     NextCardIndex(1); // skips this one
                     }
                  }
               }
            }
         }
     }
  if (Found > 0) {
     isyslog("found %d DVB device%s", Found, Found > 1 ? "s" : "");
     if (Used != Found)
        isyslog("using only %d DVB device%s", Used, Used != 1 ? "s" : "");
     }
  else
     isyslog("no DVB device found");
  return Found > 0;
}

bool cDvbDevice::BondDevices(const char *Bondings)
{
  UnBondDevices();
  if (Bondings) {
     cSatCableNumbers SatCableNumbers(MAXDEVICES, Bondings);
     for (int i = 0; i < cDevice::NumDevices(); i++) {
         int d = SatCableNumbers.FirstDeviceIndex(i);
         if (d >= 0) {
            int ErrorDevice = 0;
            if (cDevice *Device1 = cDevice::GetDevice(i)) {
               if (cDevice *Device2 = cDevice::GetDevice(d)) {
                  if (cDvbDevice *DvbDevice1 = dynamic_cast<cDvbDevice *>(Device1)) {
                     if (cDvbDevice *DvbDevice2 = dynamic_cast<cDvbDevice *>(Device2)) {
                        if (!DvbDevice1->Bond(DvbDevice2))
                           return false; // Bond() has already logged the error
                        }
                     else
                        ErrorDevice = d + 1;
                     }
                  else
                     ErrorDevice = i + 1;
                  if (ErrorDevice) {
                     esyslog("ERROR: device '%d' in device bondings '%s' is not a cDvbDevice", ErrorDevice, Bondings);
                     return false;
                     }
                  }
               else
                  ErrorDevice = d + 1;
               }
            else
               ErrorDevice = i + 1;
            if (ErrorDevice) {
               esyslog("ERROR: unknown device '%d' in device bondings '%s'", ErrorDevice, Bondings);
               return false;
               }
            }
         }
     }
  return true;
}

void cDvbDevice::UnBondDevices(void)
{
  for (int i = 0; i < cDevice::NumDevices(); i++) {
      if (cDvbDevice *d = dynamic_cast<cDvbDevice *>(cDevice::GetDevice(i)))
         d->UnBond();
      }
}

bool cDvbDevice::Bond(cDvbDevice *Device)
{
  cMutexLock MutexLock(&bondMutex);
  if (!bondedDevice) {
     if (Device != this) {
        if ((ProvidesDeliverySystem(SYS_DVBS) || ProvidesDeliverySystem(SYS_DVBS2)) && (Device->ProvidesDeliverySystem(SYS_DVBS) || Device->ProvidesDeliverySystem(SYS_DVBS2))) {
           if (dvbTuner && Device->dvbTuner && dvbTuner->Bond(Device->dvbTuner)) {
              bondedDevice = Device->bondedDevice ? Device->bondedDevice : Device;
              Device->bondedDevice = this;
              dsyslog("device %d bonded with device %d", DeviceNumber() + 1, bondedDevice->DeviceNumber() + 1);
              return true;
              }
           }
        else
           esyslog("ERROR: can't bond device %d with device %d (only DVB-S(2) devices can be bonded)", DeviceNumber() + 1, Device->DeviceNumber() + 1);
        }
     else
        esyslog("ERROR: can't bond device %d with itself", DeviceNumber() + 1);
     }
  else
     esyslog("ERROR: device %d already bonded with device %d, can't bond with device %d", DeviceNumber() + 1, bondedDevice->DeviceNumber() + 1, Device->DeviceNumber() + 1);
  return false;
}

void cDvbDevice::UnBond(void)
{
  cMutexLock MutexLock(&bondMutex);
  if (cDvbDevice *d = bondedDevice) {
     if (dvbTuner)
        dvbTuner->UnBond();
     dsyslog("device %d unbonded from device %d", DeviceNumber() + 1, bondedDevice->DeviceNumber() + 1);
     while (d->bondedDevice != this)
           d = d->bondedDevice;
     if (d == bondedDevice)
        d->bondedDevice = NULL;
     else
        d->bondedDevice = bondedDevice;
     bondedDevice = NULL;
     }
}

bool cDvbDevice::BondingOk(const cChannel *Channel, bool ConsiderOccupied) const
{
  cMutexLock MutexLock(&bondMutex);
  if (bondedDevice || Positioner())
     return dvbTuner && dvbTuner->BondingOk(Channel, ConsiderOccupied);
  return true;
}

bool cDvbDevice::HasCi(void)
{
  return ciAdapter;
}

bool cDvbDevice::SetPid(cPidHandle *Handle, int Type, bool On)
{
  if (Handle->pid) {
     dmx_pes_filter_params pesFilterParams;
     memset(&pesFilterParams, 0, sizeof(pesFilterParams));
     if (On) {
        if (Handle->handle < 0) {
           Handle->handle = DvbOpen(DEV_DVB_DEMUX, adapter, frontend, O_RDWR | O_NONBLOCK, true);
           if (Handle->handle < 0) {
              LOG_ERROR;
              return false;
              }
           }
        pesFilterParams.pid     = Handle->pid;
        pesFilterParams.input   = DMX_IN_FRONTEND;
        pesFilterParams.output  = DMX_OUT_TS_TAP;
        pesFilterParams.pes_type= DMX_PES_OTHER;
        pesFilterParams.flags   = DMX_IMMEDIATE_START;
        if (ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
           LOG_ERROR;
           return false;
           }
        }
     else if (!Handle->used) {
        CHECK(ioctl(Handle->handle, DMX_STOP));
        if (Type <= ptTeletext) {
           pesFilterParams.pid     = 0x1FFF;
           pesFilterParams.input   = DMX_IN_FRONTEND;
           pesFilterParams.output  = DMX_OUT_DECODER;
           pesFilterParams.pes_type= DMX_PES_OTHER;
           pesFilterParams.flags   = DMX_IMMEDIATE_START;
           CHECK(ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams));
           }
        close(Handle->handle);
        Handle->handle = -1;
        }
     }
  return true;
}

int cDvbDevice::OpenFilter(u_short Pid, u_char Tid, u_char Mask)
{
  cString FileName = DvbName(DEV_DVB_DEMUX, adapter, frontend);
  int f = open(FileName, O_RDWR | O_NONBLOCK);
  if (f >= 0) {
     dmx_sct_filter_params sctFilterParams;
     memset(&sctFilterParams, 0, sizeof(sctFilterParams));
     sctFilterParams.pid = Pid;
     sctFilterParams.timeout = 0;
     sctFilterParams.flags = DMX_IMMEDIATE_START;
     sctFilterParams.filter.filter[0] = Tid;
     sctFilterParams.filter.mask[0] = Mask;
     if (ioctl(f, DMX_SET_FILTER, &sctFilterParams) >= 0)
        return f;
     else {
        esyslog("ERROR: can't set filter (pid=%d, tid=%02X, mask=%02X): %m", Pid, Tid, Mask);
        close(f);
        }
     }
  else
     esyslog("ERROR: can't open filter handle on '%s'", *FileName);
  return -1;
}

void cDvbDevice::CloseFilter(int Handle)
{
  close(Handle);
}

bool cDvbDevice::ProvidesDeliverySystem(int DeliverySystem) const
{
  return dvbTuner->ProvidesDeliverySystem(DeliverySystem);
}

bool cDvbDevice::ProvidesSource(int Source) const
{
  int type = Source & cSource::st_Mask;
  return type == cSource::stNone
      || type == cSource::stAtsc  && ProvidesDeliverySystem(SYS_ATSC)
      || type == cSource::stCable && (ProvidesDeliverySystem(SYS_DVBC_ANNEX_AC) || ProvidesDeliverySystem(SYS_DVBC_ANNEX_B))
      || type == cSource::stSat   && (ProvidesDeliverySystem(SYS_DVBS) || ProvidesDeliverySystem(SYS_DVBS2))
      || type == cSource::stTerr  && (ProvidesDeliverySystem(SYS_DVBT) || ProvidesDeliverySystem(SYS_DVBT2));
}

bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
{
  if (!ProvidesSource(Channel->Source()))
     return false; // doesn't provide source
  if (!dvbTuner->ProvidesFrontend(Channel))
     return false; // requires modulation system which frontend doesn't provide
  cDvbTransponderParameters dtp(Channel->Parameters());
  if (!cSource::IsSat(Channel->Source()) ||
     (!Setup.DiSEqC || Diseqcs.Get(DeviceNumber() + 1, Channel->Source(), Channel->Frequency(), dtp.Polarization(), NULL)))
     return DeviceHooksProvidesTransponder(Channel);
  return false;
}

bool cDvbDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *NeedsDetachReceivers) const
{
  bool result = false;
  bool hasPriority = Priority == IDLEPRIORITY || Priority > this->Priority();
  bool needsDetachReceivers = false;
  needsDetachBondedReceivers = false;

  if (ProvidesTransponder(Channel)) {
     result = hasPriority;
     if (Priority > IDLEPRIORITY) {
        if (Receiving()) {
           if (dvbTuner->IsTunedTo(Channel)) {
              if (Channel->Vpid() && !HasPid(Channel->Vpid()) || Channel->Apid(0) && !HasPid(Channel->Apid(0)) || Channel->Dpid(0) && !HasPid(Channel->Dpid(0))) {
                 if (CamSlot() && Channel->Ca() >= CA_ENCRYPTED_MIN) {
                    if (CamSlot()->CanDecrypt(Channel))
                       result = true;
                    else
                       needsDetachReceivers = true;
                    }
                 else
                    result = true;
                 }
              else
                 result = true;
              }
           else
              needsDetachReceivers = Receiving();
           }
        if (result) {
           cMutexLock MutexLock(&bondMutex);
           if (!BondingOk(Channel)) {
              // This device is bonded, so we need to check the priorities of the others:
              for (cDvbDevice *d = bondedDevice; d && d != this; d = d->bondedDevice) {
                  if (d->Priority() >= Priority) {
                     result = false;
                     break;
                     }
                  needsDetachReceivers |= d->Receiving();
                  }
              needsDetachBondedReceivers = true;
              needsDetachReceivers |= Receiving();
              }
           }
        }
     }
  if (NeedsDetachReceivers)
     *NeedsDetachReceivers = needsDetachReceivers;
  return result;
}

bool cDvbDevice::ProvidesEIT(void) const
{
  return dvbTuner != NULL && DeviceHooksProvidesEIT();
}

int cDvbDevice::NumProvidedSystems(void) const
{
  return dvbTuner ? dvbTuner->NumProvidedSystems() : 0;
}

const cPositioner *cDvbDevice::Positioner(void) const
{
  return dvbTuner ? dvbTuner->Positioner() : NULL;
}

bool cDvbDevice::SignalStats(int &Valid, double *Strength, double *Cnr, double *BerPre, double *BerPost, double *Per, int *Status) const
{
  return dvbTuner ? dvbTuner->GetSignalStats(Valid, Strength, Cnr, BerPre, BerPost, Per, Status) : false;
}

int cDvbDevice::SignalStrength(void) const
{
  return dvbTuner ? dvbTuner->GetSignalStrength() : -1;
}

int cDvbDevice::SignalQuality(void) const
{
  return dvbTuner ? dvbTuner->GetSignalQuality() : -1;
}

const cChannel *cDvbDevice::GetCurrentlyTunedTransponder(void) const
{
  return dvbTuner ? dvbTuner->GetTransponder() : NULL;
}

bool cDvbDevice::IsTunedToTransponder(const cChannel *Channel) const
{
  return dvbTuner ? dvbTuner->IsTunedTo(Channel) : false;
}

bool cDvbDevice::MaySwitchTransponder(const cChannel *Channel) const
{
  return BondingOk(Channel, true) && cDevice::MaySwitchTransponder(Channel);
}

bool cDvbDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
{
  if (dvbTuner->ProvidesFrontend(Channel, true)) {
     dvbTuner->SetChannel(Channel);
     return true;
     }
  return false;
}

bool cDvbDevice::HasLock(int TimeoutMs) const
{
  return dvbTuner ? dvbTuner->Locked(TimeoutMs) : false;
}

void cDvbDevice::SetTransferModeForDolbyDigital(int Mode)
{
  setTransferModeForDolbyDigital = Mode;
}

bool cDvbDevice::OpenDvr(void)
{
  CloseDvr();
  fd_dvr = DvbOpen(DEV_DVB_DVR, adapter, frontend, O_RDONLY | O_NONBLOCK, true);
  if (fd_dvr >= 0)
     tsBuffer = new cTSBuffer(fd_dvr, TSBUFFERSIZE, DeviceNumber() + 1);
  return fd_dvr >= 0;
}

void cDvbDevice::CloseDvr(void)
{
  if (fd_dvr >= 0) {
     delete tsBuffer;
     tsBuffer = NULL;
     close(fd_dvr);
     fd_dvr = -1;
     }
}

bool cDvbDevice::GetTSPacket(uchar *&Data)
{
  if (tsBuffer) {
     if (cCamSlot *cs = CamSlot()) {
        if (cs->WantsTsData()) {
           int Available;
           Data = tsBuffer->Get(&Available, checkTsBuffer);
           if (!Data)
              Available = 0;
           Data = cs->Decrypt(Data, Available);
           tsBuffer->Skip(Available);
           checkTsBuffer = Data != NULL;
           return true;
           }
        }
     Data = tsBuffer->Get();
     return true;
     }
  return false;
}

void cDvbDevice::DetachAllReceivers(void)
{
  cMutexLock MutexLock(&bondMutex);
  cDvbDevice *d = this;
  do {
     d->cDevice::DetachAllReceivers();
     d = d->bondedDevice;
     } while (d && d != this && needsDetachBondedReceivers);
  needsDetachBondedReceivers = false;
}

// --- cDvbDeviceProbe -------------------------------------------------------

cList<cDvbDeviceProbe> DvbDeviceProbes;

cDvbDeviceProbe::cDvbDeviceProbe(void)
{
  DvbDeviceProbes.Add(this);
}

cDvbDeviceProbe::~cDvbDeviceProbe()
{
  DvbDeviceProbes.Del(this, false);
}

uint32_t cDvbDeviceProbe::GetSubsystemId(int Adapter, int Frontend)
{
  uint32_t SubsystemId = 0;
  cString FileName = cString::sprintf("/dev/dvb/adapter%d/frontend%d", Adapter, Frontend);
  struct stat st;
  if (stat(FileName, &st) == 0) {
     cReadDir d("/sys/class/dvb");
     if (d.Ok()) {
        struct dirent *e;
        while ((e = d.Next()) != NULL) {
              if (strstr(e->d_name, "frontend")) {
                 FileName = cString::sprintf("/sys/class/dvb/%s/dev", e->d_name);
                 if (FILE *f = fopen(FileName, "r")) {
                    cReadLine ReadLine;
                    char *s = ReadLine.Read(f);
                    fclose(f);
                    unsigned Major;
                    unsigned Minor;
                    if (s && 2 == sscanf(s, "%u:%u", &Major, &Minor)) {
                       if (((Major << 8) | Minor) == st.st_rdev) {
                          FileName = cString::sprintf("/sys/class/dvb/%s/device/subsystem_vendor", e->d_name);
                          if ((f = fopen(FileName, "r")) != NULL) {
                             if (char *s = ReadLine.Read(f))
                                SubsystemId = strtoul(s, NULL, 0) << 16;
                             fclose(f);
                             }
                          else {
                             FileName = cString::sprintf("/sys/class/dvb/%s/device/idVendor", e->d_name);
                             if ((f = fopen(FileName, "r")) != NULL) {
                                if (char *s = ReadLine.Read(f))
                                   SubsystemId = strtoul(s, NULL, 16) << 16;
                                fclose(f);
                                }
                             }
                          FileName = cString::sprintf("/sys/class/dvb/%s/device/subsystem_device", e->d_name);
                          if ((f = fopen(FileName, "r")) != NULL) {
                             if (char *s = ReadLine.Read(f))
                                SubsystemId |= strtoul(s, NULL, 0);
                             fclose(f);
                             }
                          else {
                             FileName = cString::sprintf("/sys/class/dvb/%s/device/idProduct", e->d_name);
                             if ((f = fopen(FileName, "r")) != NULL) {
                                if (char *s = ReadLine.Read(f))
                                   SubsystemId |= strtoul(s, NULL, 16);
                                fclose(f);
                                }
                             }
                          break;
                          }
                       }
                    }
                 }
              }
        }
     }
  return SubsystemId;
}