From 6fd10cdacb5cbe47a4fc339c20a733d4a9a384a1 Mon Sep 17 00:00:00 2001
From: Takamichi Horikawa <takamichiho@gmail.com>
Date: Sat, 26 Nov 2016 20:57:57 +0900
Subject: initial

---
 libopna/opnatables.h | 242 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 242 insertions(+)
 create mode 100644 libopna/opnatables.h

(limited to 'libopna/opnatables.h')

diff --git a/libopna/opnatables.h b/libopna/opnatables.h
new file mode 100644
index 0000000..30140bf
--- /dev/null
+++ b/libopna/opnatables.h
@@ -0,0 +1,242 @@
+#define LOGSINTABLEBIT 8
+#define LOGSINTABLELEN (1<<LOGSINTABLEBIT)
+// round(-256.0*log2((sin((2*i+1)*PI/1024.0))))
+static const uint16_t logsintable[LOGSINTABLELEN] = {
+  2137, 1731, 1543, 1419, 1326, 1252, 1190, 1137,
+  1091, 1050, 1013,  979,  949,  920,  894,  869,
+   846,  825,  804,  785,  767,  749,  732,  717,
+   701,  687,  672,  659,  646,  633,  621,  609,
+   598,  587,  576,  566,  556,  546,  536,  527,
+   518,  509,  501,  492,  484,  476,  468,  461,
+   453,  446,  439,  432,  425,  418,  411,  405,
+   399,  392,  386,  380,  375,  369,  363,  358,
+   352,  347,  341,  336,  331,  326,  321,  316,
+   311,  307,  302,  297,  293,  289,  284,  280,
+   276,  271,  267,  263,  259,  255,  251,  248,
+   244,  240,  236,  233,  229,  226,  222,  219,
+   215,  212,  209,  205,  202,  199,  196,  193,
+   190,  187,  184,  181,  178,  175,  172,  169,
+   167,  164,  161,  159,  156,  153,  151,  148,
+   146,  143,  141,  138,  136,  134,  131,  129,
+   127,  125,  122,  120,  118,  116,  114,  112,
+   110,  108,  106,  104,  102,  100,   98,   96,
+    94,   92,   91,   89,   87,   85,   83,   82,
+    80,   78,   77,   75,   74,   72,   70,   69,
+    67,   66,   64,   63,   62,   60,   59,   57,
+    56,   55,   53,   52,   51,   49,   48,   47,
+    46,   45,   43,   42,   41,   40,   39,   38,
+    37,   36,   35,   34,   33,   32,   31,   30,
+    29,   28,   27,   26,   25,   24,   23,   23,
+    22,   21,   20,   20,   19,   18,   17,   17,
+    16,   15,   15,   14,   13,   13,   12,   12,
+    11,   10,   10,    9,    9,    8,    8,    7,
+     7,    7,    6,    6,    5,    5,    5,    4,
+     4,    4,    3,    3,    3,    2,    2,    2,
+     2,    1,    1,    1,    1,    1,    1,    1,
+     0,    0,    0,    0,    0,    0,    0,    0,
+};
+#define LOGSINTABLEHIRESBIT 10
+#define LOGSINTABLEHIRESLEN (1<<LOGSINTABLEHIRESBIT)
+static const uint16_t logsintable_hires[LOGSINTABLEHIRESLEN] = {
+  2649, 2243, 2055, 1931, 1838, 1764, 1702, 1649,
+  1603, 1562, 1525, 1491, 1460, 1432, 1406, 1381,
+  1358, 1336, 1316, 1296, 1278, 1260, 1243, 1227,
+  1212, 1197, 1183, 1169, 1156, 1143, 1131, 1119,
+  1108, 1096, 1086, 1075, 1065, 1055, 1045, 1036,
+  1026, 1017, 1009, 1000,  992,  984,  976,  968,
+   960,  952,  945,  938,  931,  924,  917,  910,
+   904,  897,  891,  885,  879,  872,  867,  861,
+   855,  849,  844,  838,  833,  827,  822,  817,
+   812,  807,  802,  797,  792,  787,  783,  778,
+   773,  769,  764,  760,  756,  751,  747,  743,
+   739,  735,  730,  726,  722,  718,  715,  711,
+   707,  703,  699,  696,  692,  688,  685,  681,
+   678,  674,  671,  667,  664,  661,  657,  654,
+   651,  647,  644,  641,  638,  635,  632,  629,
+   626,  623,  620,  617,  614,  611,  608,  605,
+   602,  599,  597,  594,  591,  588,  586,  583,
+   580,  578,  575,  572,  570,  567,  565,  562,
+   559,  557,  554,  552,  550,  547,  545,  542,
+   540,  538,  535,  533,  531,  528,  526,  524,
+   521,  519,  517,  515,  512,  510,  508,  506,
+   504,  502,  500,  497,  495,  493,  491,  489,
+   487,  485,  483,  481,  479,  477,  475,  473,
+   471,  469,  467,  465,  463,  462,  460,  458,
+   456,  454,  452,  450,  449,  447,  445,  443,
+   441,  440,  438,  436,  434,  433,  431,  429,
+   427,  426,  424,  422,  421,  419,  417,  416,
+   414,  412,  411,  409,  407,  406,  404,  403,
+   401,  399,  398,  396,  395,  393,  392,  390,
+   389,  387,  386,  384,  383,  381,  380,  378,
+   377,  375,  374,  372,  371,  369,  368,  367,
+   365,  364,  362,  361,  360,  358,  357,  355,
+   354,  353,  351,  350,  349,  347,  346,  345,
+   343,  342,  341,  339,  338,  337,  336,  334,
+   333,  332,  330,  329,  328,  327,  325,  324,
+   323,  322,  320,  319,  318,  317,  316,  314,
+   313,  312,  311,  310,  308,  307,  306,  305,
+   304,  303,  301,  300,  299,  298,  297,  296,
+   295,  294,  292,  291,  290,  289,  288,  287,
+   286,  285,  284,  283,  281,  280,  279,  278,
+   277,  276,  275,  274,  273,  272,  271,  270,
+   269,  268,  267,  266,  265,  264,  263,  262,
+   261,  260,  259,  258,  257,  256,  255,  254,
+   253,  252,  251,  250,  249,  248,  247,  246,
+   245,  244,  243,  242,  242,  241,  240,  239,
+   238,  237,  236,  235,  234,  233,  232,  231,
+   231,  230,  229,  228,  227,  226,  225,  224,
+   224,  223,  222,  221,  220,  219,  218,  218,
+   217,  216,  215,  214,  213,  212,  212,  211,
+   210,  209,  208,  208,  207,  206,  205,  204,
+   203,  203,  202,  201,  200,  199,  199,  198,
+   197,  196,  196,  195,  194,  193,  192,  192,
+   191,  190,  189,  189,  188,  187,  186,  186,
+   185,  184,  183,  183,  182,  181,  180,  180,
+   179,  178,  178,  177,  176,  175,  175,  174,
+   173,  173,  172,  171,  171,  170,  169,  168,
+   168,  167,  166,  166,  165,  164,  164,  163,
+   162,  162,  161,  160,  160,  159,  158,  158,
+   157,  156,  156,  155,  154,  154,  153,  152,
+   152,  151,  151,  150,  149,  149,  148,  147,
+   147,  146,  145,  145,  144,  144,  143,  142,
+   142,  141,  141,  140,  139,  139,  138,  138,
+   137,  136,  136,  135,  135,  134,  133,  133,
+   132,  132,  131,  131,  130,  129,  129,  128,
+   128,  127,  127,  126,  125,  125,  124,  124,
+   123,  123,  122,  122,  121,  121,  120,  119,
+   119,  118,  118,  117,  117,  116,  116,  115,
+   115,  114,  114,  113,  113,  112,  112,  111,
+   110,  110,  109,  109,  108,  108,  107,  107,
+   106,  106,  105,  105,  104,  104,  103,  103,
+   102,  102,  101,  101,  101,  100,  100,   99,
+    99,   98,   98,   97,   97,   96,   96,   95,
+    95,   94,   94,   93,   93,   93,   92,   92,
+    91,   91,   90,   90,   89,   89,   88,   88,
+    88,   87,   87,   86,   86,   85,   85,   85,
+    84,   84,   83,   83,   82,   82,   82,   81,
+    81,   80,   80,   79,   79,   79,   78,   78,
+    77,   77,   77,   76,   76,   75,   75,   75,
+    74,   74,   73,   73,   73,   72,   72,   71,
+    71,   71,   70,   70,   69,   69,   69,   68,
+    68,   68,   67,   67,   66,   66,   66,   65,
+    65,   65,   64,   64,   64,   63,   63,   62,
+    62,   62,   61,   61,   61,   60,   60,   60,
+    59,   59,   59,   58,   58,   58,   57,   57,
+    57,   56,   56,   55,   55,   55,   54,   54,
+    54,   54,   53,   53,   53,   52,   52,   52,
+    51,   51,   51,   50,   50,   50,   49,   49,
+    49,   48,   48,   48,   47,   47,   47,   47,
+    46,   46,   46,   45,   45,   45,   44,   44,
+    44,   44,   43,   43,   43,   42,   42,   42,
+    42,   41,   41,   41,   40,   40,   40,   40,
+    39,   39,   39,   38,   38,   38,   38,   37,
+    37,   37,   37,   36,   36,   36,   36,   35,
+    35,   35,   35,   34,   34,   34,   34,   33,
+    33,   33,   33,   32,   32,   32,   32,   31,
+    31,   31,   31,   30,   30,   30,   30,   29,
+    29,   29,   29,   28,   28,   28,   28,   28,
+    27,   27,   27,   27,   26,   26,   26,   26,
+    26,   25,   25,   25,   25,   24,   24,   24,
+    24,   24,   23,   23,   23,   23,   23,   22,
+    22,   22,   22,   22,   21,   21,   21,   21,
+    21,   20,   20,   20,   20,   20,   19,   19,
+    19,   19,   19,   18,   18,   18,   18,   18,
+    18,   17,   17,   17,   17,   17,   17,   16,
+    16,   16,   16,   16,   15,   15,   15,   15,
+    15,   15,   15,   14,   14,   14,   14,   14,
+    14,   13,   13,   13,   13,   13,   13,   12,
+    12,   12,   12,   12,   12,   12,   11,   11,
+    11,   11,   11,   11,   11,   10,   10,   10,
+    10,   10,   10,   10,   10,    9,    9,    9,
+     9,    9,    9,    9,    9,    8,    8,    8,
+     8,    8,    8,    8,    8,    7,    7,    7,
+     7,    7,    7,    7,    7,    7,    6,    6,
+     6,    6,    6,    6,    6,    6,    6,    6,
+     5,    5,    5,    5,    5,    5,    5,    5,
+     5,    5,    4,    4,    4,    4,    4,    4,
+     4,    4,    4,    4,    4,    4,    3,    3,
+     3,    3,    3,    3,    3,    3,    3,    3,
+     3,    3,    3,    3,    2,    2,    2,    2,
+     2,    2,    2,    2,    2,    2,    2,    2,
+     2,    2,    2,    2,    2,    1,    1,    1,
+     1,    1,    1,    1,    1,    1,    1,    1,
+     1,    1,    1,    1,    1,    1,    1,    1,
+     1,    1,    1,    1,    1,    1,    0,    0,
+     0,    0,    0,    0,    0,    0,    0,    0,
+     0,    0,    0,    0,    0,    0,    0,    0,
+     0,    0,    0,    0,    0,    0,    0,    0,
+     0,    0,    0,    0,    0,    0,    0,    0,
+};
+
+#define EXPTABLEBIT 8
+#define EXPTABLELEN (1<<EXPTABLEBIT)
+// round((1<<11) / pow(2.0, (i+1.0)/256.0))
+static const uint16_t exptable[EXPTABLELEN] = {
+  2042, 2037, 2031, 2026, 2020, 2015, 2010, 2004,
+  1999, 1993, 1988, 1983, 1977, 1972, 1966, 1961,
+  1956, 1951, 1945, 1940, 1935, 1930, 1924, 1919,
+  1914, 1909, 1904, 1898, 1893, 1888, 1883, 1878,
+  1873, 1868, 1863, 1858, 1853, 1848, 1843, 1838,
+  1833, 1828, 1823, 1818, 1813, 1808, 1803, 1798,
+  1794, 1789, 1784, 1779, 1774, 1769, 1765, 1760,
+  1755, 1750, 1746, 1741, 1736, 1732, 1727, 1722,
+  1717, 1713, 1708, 1704, 1699, 1694, 1690, 1685,
+  1681, 1676, 1672, 1667, 1663, 1658, 1654, 1649,
+  1645, 1640, 1636, 1631, 1627, 1623, 1618, 1614,
+  1609, 1605, 1601, 1596, 1592, 1588, 1584, 1579,
+  1575, 1571, 1566, 1562, 1558, 1554, 1550, 1545,
+  1541, 1537, 1533, 1529, 1525, 1520, 1516, 1512,
+  1508, 1504, 1500, 1496, 1492, 1488, 1484, 1480,
+  1476, 1472, 1468, 1464, 1460, 1456, 1452, 1448,
+  1444, 1440, 1436, 1433, 1429, 1425, 1421, 1417,
+  1413, 1409, 1406, 1402, 1398, 1394, 1391, 1387,
+  1383, 1379, 1376, 1372, 1368, 1364, 1361, 1357,
+  1353, 1350, 1346, 1342, 1339, 1335, 1332, 1328,
+  1324, 1321, 1317, 1314, 1310, 1307, 1303, 1300,
+  1296, 1292, 1289, 1286, 1282, 1279, 1275, 1272,
+  1268, 1265, 1261, 1258, 1255, 1251, 1248, 1244,
+  1241, 1238, 1234, 1231, 1228, 1224, 1221, 1218,
+  1214, 1211, 1208, 1205, 1201, 1198, 1195, 1192,
+  1188, 1185, 1182, 1179, 1176, 1172, 1169, 1166,
+  1163, 1160, 1157, 1154, 1150, 1147, 1144, 1141,
+  1138, 1135, 1132, 1129, 1126, 1123, 1120, 1117,
+  1114, 1111, 1108, 1105, 1102, 1099, 1096, 1093,
+  1090, 1087, 1084, 1081, 1078, 1075, 1072, 1069,
+  1066, 1064, 1061, 1058, 1055, 1052, 1049, 1046,
+  1044, 1041, 1038, 1035, 1032, 1030, 1027, 1024,
+};
+
+static const uint8_t rateinctable[4*2][8] = {
+// rates 0 - 47
+  {0, 1, 0, 1, 0, 1, 0, 1},
+  {0, 1, 0, 1, 1, 1, 0, 1},
+  {0, 1, 1, 1, 0, 1, 1, 1},
+  {0, 1, 1, 1, 1, 1, 1, 1},
+
+// rates 48 - 
+  {1, 1, 1, 1, 1, 1, 1, 1},
+  {1, 1, 1, 2, 1, 1, 1, 2},
+  {1, 2, 1, 2, 1, 2, 1, 2},
+  {1, 2, 2, 2, 1, 2, 2, 2},
+};
+
+// datasheet 0.053Hz = 1
+// [FD][keycode]
+static const uint8_t dettable[4][32]={
+  {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  },
+  {
+    0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2,
+    2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 8, 8, 8, 8,
+  },
+  {
+    1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5,
+    5, 6, 6, 7, 8, 8, 9,10,11,12,13,14,16,16,16,16,
+  },
+  {
+    2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7,
+    8, 8, 9,10,11,12,13,14,16,17,19,20,22,22,22,22,
+  },
+};
-- 
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