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Further lut resolution optimizations

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Jan-Henrik 2020-02-18 12:05:27 +01:00
parent 7b0b1e4f08
commit d272e4badf
3 changed files with 211 additions and 213 deletions
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stereo_mix/resources.cc
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@ -32,202 +32,202 @@ const prog_char* const string_table[] = {
};
const prog_uint16_t lut_res_linear_to_exp[] PROGMEM = {
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, 1, 2,
2, 2, 2, 2, 2, 2, 2, 3,
3, 3, 3, 3, 3, 4, 4, 4,
4, 4, 5, 5, 5, 5, 5, 6,
6, 6, 6, 7, 7, 7, 7, 8,
8, 8, 8, 9, 9, 9, 9, 10,
10, 10, 10, 11, 11, 11, 12, 12,
12, 13, 13, 13, 14, 14, 14, 15,
15, 15, 16, 16, 16, 17, 17, 18,
18, 18, 19, 19, 19, 20, 20, 21,
21, 21, 22, 22, 23, 23, 24, 24,
24, 25, 25, 26, 26, 27, 27, 28,
28, 29, 29, 30, 30, 31, 31, 32,
32, 33, 33, 34, 34, 35, 35, 36,
36, 37, 37, 38, 38, 39, 39, 40,
41, 41, 42, 42, 43, 43, 44, 45,
45, 46, 46, 47, 48, 48, 49, 50,
50, 51, 51, 52, 53, 53, 54, 55,
55, 56, 57, 57, 58, 59, 59, 60,
61, 61, 62, 63, 63, 64, 65, 66,
66, 67, 68, 69, 69, 70, 71, 72,
72, 73, 74, 75, 75, 76, 77, 78,
78, 79, 80, 81, 82, 82, 83, 84,
85, 86, 86, 87, 88, 89, 90, 91,
91, 92, 93, 94, 95, 96, 97, 98,
98, 99, 100, 101, 102, 103, 104, 105,
106, 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, 152, 153,
154, 155, 156, 157, 158, 159, 160, 162,
163, 164, 165, 166, 167, 168, 169, 171,
172, 173, 174, 175, 176, 178, 179, 180,
181, 182, 184, 185, 186, 187, 188, 190,
191, 192, 193, 195, 196, 197, 198, 200,
201, 202, 203, 205, 206, 207, 208, 210,
211, 212, 213, 215, 216, 217, 219, 220,
221, 223, 224, 225, 227, 228, 229, 231,
232, 233, 235, 236, 237, 239, 240, 242,
243, 244, 246, 247, 248, 250, 251, 253,
254, 255, 257, 258, 260, 261, 263, 264,
265, 267, 268, 270, 271, 273, 274, 276,
277, 279, 280, 282, 283, 285, 286, 288,
289, 291, 292, 294, 295, 297, 298, 300,
301, 303, 304, 306, 307, 309, 310, 312,
314, 315, 317, 318, 320, 321, 323, 325,
326, 328, 329, 331, 333, 334, 336, 338,
339, 341, 342, 344, 346, 347, 349, 351,
352, 354, 356, 357, 359, 361, 362, 364,
366, 367, 369, 371, 372, 374, 376, 378,
379, 381, 383, 385, 386, 388, 390, 392,
393, 395, 397, 399, 400, 402, 404, 406,
407, 409, 411, 413, 415, 416, 418, 420,
422, 424, 425, 427, 429, 431, 433, 435,
436, 438, 440, 442, 444, 446, 448, 450,
451, 453, 455, 457, 459, 461, 463, 465,
467, 468, 470, 472, 474, 476, 478, 480,
482, 484, 486, 488, 490, 492, 494, 496,
498, 500, 502, 504, 506, 508, 510, 512,
0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 2, 2, 3, 3, 4,
4, 5, 5, 6, 6, 7, 8, 9,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 25,
26, 27, 28, 30, 31, 33, 34, 36,
37, 39, 40, 42, 43, 45, 47, 49,
50, 52, 54, 56, 58, 60, 62, 64,
66, 68, 70, 72, 74, 76, 78, 81,
83, 85, 87, 90, 92, 95, 97, 100,
102, 105, 107, 110, 112, 115, 118, 121,
123, 126, 129, 132, 135, 138, 141, 144,
147, 150, 153, 156, 159, 162, 165, 169,
172, 175, 178, 182, 185, 189, 192, 196,
199, 203, 206, 210, 213, 217, 221, 225,
228, 232, 236, 240, 244, 248, 252, 256,
260, 264, 268, 272, 276, 280, 284, 289,
293, 297, 301, 306, 310, 315, 319, 324,
328, 333, 337, 342, 346, 351, 356, 361,
365, 370, 375, 380, 385, 390, 395, 400,
405, 410, 415, 420, 425, 430, 435, 441,
446, 451, 456, 462, 467, 473, 478, 484,
489, 495, 500, 506, 511, 517, 523, 529,
534, 540, 546, 552, 558, 564, 570, 576,
582, 588, 594, 600, 606, 612, 618, 625,
631, 637, 643, 650, 656, 663, 669, 676,
682, 689, 695, 702, 708, 715, 722, 729,
735, 742, 749, 756, 763, 770, 777, 784,
791, 798, 805, 812, 819, 826, 833, 841,
848, 855, 862, 870, 877, 885, 892, 900,
907, 915, 922, 930, 937, 945, 953, 961,
968, 976, 984, 992, 1000, 1008, 1016, 1024,
1032, 1040, 1048, 1056, 1064, 1072, 1080, 1089,
1097, 1105, 1113, 1122, 1130, 1139, 1147, 1156,
1164, 1173, 1181, 1190, 1198, 1207, 1216, 1225,
1233, 1242, 1251, 1260, 1269, 1278, 1287, 1296,
1305, 1314, 1323, 1332, 1341, 1350, 1359, 1369,
1378, 1387, 1396, 1406, 1415, 1425, 1434, 1444,
1453, 1463, 1472, 1482, 1491, 1501, 1511, 1521,
1530, 1540, 1550, 1560, 1570, 1580, 1590, 1600,
1610, 1620, 1630, 1640, 1650, 1660, 1670, 1681,
1691, 1701, 1711, 1722, 1732, 1743, 1753, 1764,
1774, 1785, 1795, 1806, 1816, 1827, 1838, 1849,
1859, 1870, 1881, 1892, 1903, 1914, 1925, 1936,
1947, 1958, 1969, 1980, 1991, 2002, 2013, 2025,
2036, 2047, 2058, 2070, 2081, 2093, 2104, 2116,
2127, 2139, 2150, 2162, 2173, 2185, 2197, 2209,
2220, 2232, 2244, 2256, 2268, 2280, 2292, 2304,
2316, 2328, 2340, 2352, 2364, 2376, 2388, 2401,
2413, 2425, 2437, 2450, 2462, 2475, 2487, 2500,
2512, 2525, 2537, 2550, 2562, 2575, 2588, 2601,
2613, 2626, 2639, 2652, 2665, 2678, 2691, 2704,
2717, 2730, 2743, 2756, 2769, 2782, 2795, 2809,
2822, 2835, 2848, 2862, 2875, 2889, 2902, 2916,
2929, 2943, 2956, 2970, 2983, 2997, 3011, 3025,
3038, 3052, 3066, 3080, 3094, 3108, 3122, 3136,
3150, 3164, 3178, 3192, 3206, 3220, 3234, 3249,
3263, 3277, 3291, 3306, 3320, 3335, 3349, 3364,
3378, 3393, 3407, 3422, 3436, 3451, 3466, 3481,
3495, 3510, 3525, 3540, 3555, 3570, 3585, 3600,
3615, 3630, 3645, 3660, 3675, 3690, 3705, 3721,
3736, 3751, 3766, 3782, 3797, 3813, 3828, 3844,
3859, 3875, 3890, 3906, 3921, 3937, 3953, 3969,
3984, 4000, 4016, 4032, 4048, 4064, 4080, 4096,
};
const prog_uint16_t lut_res_left_sin_pan[] PROGMEM = {
0, 2, 3, 5, 6, 8, 9, 11,
13, 14, 16, 17, 19, 20, 22, 24,
25, 27, 28, 30, 31, 33, 35, 36,
38, 39, 41, 42, 44, 45, 47, 49,
50, 52, 53, 55, 56, 58, 60, 61,
63, 64, 66, 67, 69, 70, 72, 74,
75, 77, 78, 80, 81, 83, 84, 86,
88, 89, 91, 92, 94, 95, 97, 98,
100, 101, 103, 105, 106, 108, 109, 111,
112, 114, 115, 117, 118, 120, 121, 123,
124, 126, 127, 129, 130, 132, 134, 135,
137, 138, 140, 141, 143, 144, 146, 147,
149, 150, 152, 153, 155, 156, 158, 159,
161, 162, 164, 165, 167, 168, 170, 171,
172, 174, 175, 177, 178, 180, 181, 183,
184, 186, 187, 189, 190, 192, 193, 194,
196, 197, 199, 200, 202, 203, 205, 206,
207, 209, 210, 212, 213, 215, 216, 217,
219, 220, 222, 223, 225, 226, 227, 229,
230, 232, 233, 234, 236, 237, 239, 240,
241, 243, 244, 246, 247, 248, 250, 251,
252, 254, 255, 256, 258, 259, 261, 262,
263, 265, 266, 267, 269, 270, 271, 273,
274, 275, 277, 278, 279, 281, 282, 283,
284, 286, 287, 288, 290, 291, 292, 294,
295, 296, 297, 299, 300, 301, 302, 304,
305, 306, 308, 309, 310, 311, 313, 314,
315, 316, 317, 319, 320, 321, 322, 324,
325, 326, 327, 328, 330, 331, 332, 333,
334, 336, 337, 338, 339, 340, 342, 343,
344, 345, 346, 347, 348, 350, 351, 352,
353, 354, 355, 356, 358, 359, 360, 361,
362, 363, 364, 365, 366, 368, 369, 370,
371, 372, 373, 374, 375, 376, 377, 378,
379, 380, 381, 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, 407, 408, 409, 410,
411, 412, 413, 414, 415, 416, 417, 418,
419, 420, 420, 421, 422, 423, 424, 425,
426, 427, 427, 428, 429, 430, 431, 432,
433, 433, 434, 435, 436, 437, 438, 438,
439, 440, 441, 442, 442, 443, 444, 445,
445, 446, 447, 448, 449, 449, 450, 451,
452, 452, 453, 454, 454, 455, 456, 457,
457, 458, 459, 459, 460, 461, 461, 462,
463, 464, 464, 465, 465, 466, 467, 467,
468, 469, 469, 470, 471, 471, 472, 472,
473, 474, 474, 475, 475, 476, 477, 477,
478, 478, 479, 479, 480, 480, 481, 482,
482, 483, 483, 484, 484, 485, 485, 486,
486, 487, 487, 488, 488, 489, 489, 489,
490, 490, 491, 491, 492, 492, 493, 493,
493, 494, 494, 495, 495, 495, 496, 496,
497, 497, 497, 498, 498, 499, 499, 499,
500, 500, 500, 501, 501, 501, 502, 502,
502, 502, 503, 503, 503, 504, 504, 504,
504, 505, 505, 505, 505, 506, 506, 506,
506, 507, 507, 507, 507, 508, 508, 508,
508, 508, 509, 509, 509, 509, 509, 509,
510, 510, 510, 510, 510, 510, 510, 510,
511, 511, 511, 511, 511, 511, 511, 511,
511, 511, 512, 512, 512, 512, 512, 512,
512, 512, 512, 512, 512, 512, 512, 512,
0, 13, 25, 38, 50, 63, 76, 88,
101, 113, 126, 138, 151, 164, 176, 189,
201, 214, 227, 239, 252, 264, 277, 289,
302, 314, 327, 340, 352, 365, 377, 390,
402, 415, 427, 440, 452, 465, 477, 490,
502, 515, 527, 540, 552, 565, 577, 590,
602, 615, 627, 640, 652, 664, 677, 689,
702, 714, 726, 739, 751, 764, 776, 788,
801, 813, 825, 838, 850, 862, 875, 887,
899, 911, 924, 936, 948, 960, 973, 985,
997, 1009, 1022, 1034, 1046, 1058, 1070, 1082,
1095, 1107, 1119, 1131, 1143, 1155, 1167, 1179,
1191, 1203, 1215, 1227, 1239, 1251, 1263, 1275,
1287, 1299, 1311, 1323, 1335, 1347, 1359, 1371,
1382, 1394, 1406, 1418, 1430, 1442, 1453, 1465,
1477, 1489, 1500, 1512, 1524, 1535, 1547, 1559,
1570, 1582, 1594, 1605, 1617, 1628, 1640, 1651,
1663, 1674, 1686, 1697, 1709, 1720, 1732, 1743,
1754, 1766, 1777, 1789, 1800, 1811, 1822, 1834,
1845, 1856, 1867, 1879, 1890, 1901, 1912, 1923,
1934, 1945, 1956, 1968, 1979, 1990, 2001, 2012,
2023, 2033, 2044, 2055, 2066, 2077, 2088, 2099,
2109, 2120, 2131, 2142, 2152, 2163, 2174, 2185,
2195, 2206, 2216, 2227, 2238, 2248, 2259, 2269,
2280, 2290, 2300, 2311, 2321, 2332, 2342, 2352,
2363, 2373, 2383, 2393, 2403, 2414, 2424, 2434,
2444, 2454, 2464, 2474, 2484, 2494, 2504, 2514,
2524, 2534, 2544, 2554, 2564, 2573, 2583, 2593,
2603, 2612, 2622, 2632, 2641, 2651, 2661, 2670,
2680, 2689, 2699, 2708, 2718, 2727, 2736, 2746,
2755, 2764, 2774, 2783, 2792, 2801, 2811, 2820,
2829, 2838, 2847, 2856, 2865, 2874, 2883, 2892,
2901, 2910, 2918, 2927, 2936, 2945, 2954, 2962,
2971, 2980, 2988, 2997, 3005, 3014, 3022, 3031,
3039, 3048, 3056, 3065, 3073, 3081, 3090, 3098,
3106, 3114, 3122, 3131, 3139, 3147, 3155, 3163,
3171, 3179, 3187, 3195, 3202, 3210, 3218, 3226,
3234, 3241, 3249, 3257, 3264, 3272, 3279, 3287,
3294, 3302, 3309, 3317, 3324, 3331, 3339, 3346,
3353, 3360, 3368, 3375, 3382, 3389, 3396, 3403,
3410, 3417, 3424, 3431, 3438, 3445, 3451, 3458,
3465, 3472, 3478, 3485, 3491, 3498, 3505, 3511,
3517, 3524, 3530, 3537, 3543, 3549, 3556, 3562,
3568, 3574, 3580, 3586, 3593, 3599, 3605, 3610,
3616, 3622, 3628, 3634, 3640, 3646, 3651, 3657,
3663, 3668, 3674, 3679, 3685, 3690, 3696, 3701,
3707, 3712, 3717, 3723, 3728, 3733, 3738, 3743,
3748, 3753, 3758, 3763, 3768, 3773, 3778, 3783,
3788, 3793, 3797, 3802, 3807, 3811, 3816, 3820,
3825, 3829, 3834, 3838, 3843, 3847, 3851, 3856,
3860, 3864, 3868, 3872, 3876, 3880, 3884, 3888,
3892, 3896, 3900, 3904, 3908, 3912, 3915, 3919,
3923, 3926, 3930, 3933, 3937, 3940, 3944, 3947,
3950, 3954, 3957, 3960, 3963, 3967, 3970, 3973,
3976, 3979, 3982, 3985, 3988, 3990, 3993, 3996,
3999, 4002, 4004, 4007, 4009, 4012, 4015, 4017,
4019, 4022, 4024, 4027, 4029, 4031, 4033, 4035,
4038, 4040, 4042, 4044, 4046, 4048, 4050, 4051,
4053, 4055, 4057, 4059, 4060, 4062, 4064, 4065,
4067, 4068, 4070, 4071, 4072, 4074, 4075, 4076,
4077, 4079, 4080, 4081, 4082, 4083, 4084, 4085,
4086, 4087, 4087, 4088, 4089, 4090, 4090, 4091,
4092, 4092, 4093, 4093, 4094, 4094, 4094, 4095,
4095, 4095, 4096, 4096, 4096, 4096, 4096, 4096,
};
const prog_uint16_t lut_res_right_cos_pan[] PROGMEM = {
512, 512, 512, 512, 512, 512, 512, 512,
512, 512, 512, 512, 512, 512, 512, 511,
511, 511, 511, 511, 511, 511, 511, 511,
511, 510, 510, 510, 510, 510, 510, 510,
510, 509, 509, 509, 509, 509, 509, 508,
508, 508, 508, 508, 507, 507, 507, 507,
506, 506, 506, 506, 505, 505, 505, 505,
504, 504, 504, 504, 503, 503, 503, 502,
502, 502, 502, 501, 501, 501, 500, 500,
500, 499, 499, 499, 498, 498, 497, 497,
497, 496, 496, 495, 495, 495, 494, 494,
493, 493, 493, 492, 492, 491, 491, 490,
490, 489, 489, 489, 488, 488, 487, 487,
486, 486, 485, 485, 484, 484, 483, 483,
482, 482, 481, 480, 480, 479, 479, 478,
478, 477, 477, 476, 475, 475, 474, 474,
473, 472, 472, 471, 471, 470, 469, 469,
468, 467, 467, 466, 465, 465, 464, 464,
463, 462, 461, 461, 460, 459, 459, 458,
457, 457, 456, 455, 454, 454, 453, 452,
452, 451, 450, 449, 449, 448, 447, 446,
445, 445, 444, 443, 442, 442, 441, 440,
439, 438, 438, 437, 436, 435, 434, 433,
433, 432, 431, 430, 429, 428, 427, 427,
426, 425, 424, 423, 422, 421, 420, 420,
419, 418, 417, 416, 415, 414, 413, 412,
411, 410, 409, 408, 407, 407, 406, 405,
404, 403, 402, 401, 400, 399, 398, 397,
396, 395, 394, 393, 392, 391, 390, 389,
388, 387, 386, 385, 384, 383, 381, 380,
379, 378, 377, 376, 375, 374, 373, 372,
371, 370, 369, 368, 366, 365, 364, 363,
362, 361, 360, 359, 358, 356, 355, 354,
353, 352, 351, 350, 348, 347, 346, 345,
344, 343, 342, 340, 339, 338, 337, 336,
334, 333, 332, 331, 330, 328, 327, 326,
325, 324, 322, 321, 320, 319, 317, 316,
315, 314, 313, 311, 310, 309, 308, 306,
305, 304, 302, 301, 300, 299, 297, 296,
295, 294, 292, 291, 290, 288, 287, 286,
284, 283, 282, 281, 279, 278, 277, 275,
274, 273, 271, 270, 269, 267, 266, 265,
263, 262, 261, 259, 258, 256, 255, 254,
252, 251, 250, 248, 247, 246, 244, 243,
241, 240, 239, 237, 236, 234, 233, 232,
230, 229, 227, 226, 225, 223, 222, 220,
219, 217, 216, 215, 213, 212, 210, 209,
207, 206, 205, 203, 202, 200, 199, 197,
196, 194, 193, 192, 190, 189, 187, 186,
184, 183, 181, 180, 178, 177, 175, 174,
172, 171, 170, 168, 167, 165, 164, 162,
161, 159, 158, 156, 155, 153, 152, 150,
149, 147, 146, 144, 143, 141, 140, 138,
137, 135, 134, 132, 130, 129, 127, 126,
124, 123, 121, 120, 118, 117, 115, 114,
112, 111, 109, 108, 106, 105, 103, 101,
100, 98, 97, 95, 94, 92, 91, 89,
88, 86, 84, 83, 81, 80, 78, 77,
75, 74, 72, 70, 69, 67, 66, 64,
63, 61, 60, 58, 56, 55, 53, 52,
50, 49, 47, 45, 44, 42, 41, 39,
38, 36, 35, 33, 31, 30, 28, 27,
25, 24, 22, 20, 19, 17, 16, 14,
13, 11, 9, 8, 6, 5, 3, 0,
4096, 4096, 4096, 4096, 4096, 4096, 4095, 4095,
4095, 4094, 4094, 4094, 4093, 4093, 4092, 4092,
4091, 4090, 4090, 4089, 4088, 4087, 4087, 4086,
4085, 4084, 4083, 4082, 4081, 4080, 4079, 4077,
4076, 4075, 4074, 4072, 4071, 4070, 4068, 4067,
4065, 4064, 4062, 4060, 4059, 4057, 4055, 4053,
4051, 4050, 4048, 4046, 4044, 4042, 4040, 4038,
4035, 4033, 4031, 4029, 4027, 4024, 4022, 4019,
4017, 4015, 4012, 4009, 4007, 4004, 4002, 3999,
3996, 3993, 3990, 3988, 3985, 3982, 3979, 3976,
3973, 3970, 3967, 3963, 3960, 3957, 3954, 3950,
3947, 3944, 3940, 3937, 3933, 3930, 3926, 3923,
3919, 3915, 3912, 3908, 3904, 3900, 3896, 3892,
3888, 3884, 3880, 3876, 3872, 3868, 3864, 3860,
3856, 3851, 3847, 3843, 3838, 3834, 3829, 3825,
3820, 3816, 3811, 3807, 3802, 3797, 3793, 3788,
3783, 3778, 3773, 3768, 3763, 3758, 3753, 3748,
3743, 3738, 3733, 3728, 3723, 3717, 3712, 3707,
3701, 3696, 3690, 3685, 3679, 3674, 3668, 3663,
3657, 3651, 3646, 3640, 3634, 3628, 3622, 3616,
3610, 3605, 3599, 3593, 3586, 3580, 3574, 3568,
3562, 3556, 3549, 3543, 3537, 3530, 3524, 3517,
3511, 3505, 3498, 3491, 3485, 3478, 3472, 3465,
3458, 3451, 3445, 3438, 3431, 3424, 3417, 3410,
3403, 3396, 3389, 3382, 3375, 3368, 3360, 3353,
3346, 3339, 3331, 3324, 3317, 3309, 3302, 3294,
3287, 3279, 3272, 3264, 3257, 3249, 3241, 3234,
3226, 3218, 3210, 3202, 3195, 3187, 3179, 3171,
3163, 3155, 3147, 3139, 3131, 3122, 3114, 3106,
3098, 3090, 3081, 3073, 3065, 3056, 3048, 3039,
3031, 3022, 3014, 3005, 2997, 2988, 2980, 2971,
2962, 2954, 2945, 2936, 2927, 2918, 2910, 2901,
2892, 2883, 2874, 2865, 2856, 2847, 2838, 2829,
2820, 2811, 2801, 2792, 2783, 2774, 2764, 2755,
2746, 2736, 2727, 2718, 2708, 2699, 2689, 2680,
2670, 2661, 2651, 2641, 2632, 2622, 2612, 2603,
2593, 2583, 2573, 2564, 2554, 2544, 2534, 2524,
2514, 2504, 2494, 2484, 2474, 2464, 2454, 2444,
2434, 2424, 2414, 2403, 2393, 2383, 2373, 2363,
2352, 2342, 2332, 2321, 2311, 2300, 2290, 2280,
2269, 2259, 2248, 2238, 2227, 2216, 2206, 2195,
2185, 2174, 2163, 2152, 2142, 2131, 2120, 2109,
2099, 2088, 2077, 2066, 2055, 2044, 2033, 2023,
2012, 2001, 1990, 1979, 1968, 1956, 1945, 1934,
1923, 1912, 1901, 1890, 1879, 1867, 1856, 1845,
1834, 1822, 1811, 1800, 1789, 1777, 1766, 1754,
1743, 1732, 1720, 1709, 1697, 1686, 1674, 1663,
1651, 1640, 1628, 1617, 1605, 1594, 1582, 1570,
1559, 1547, 1535, 1524, 1512, 1500, 1489, 1477,
1465, 1453, 1442, 1430, 1418, 1406, 1394, 1382,
1371, 1359, 1347, 1335, 1323, 1311, 1299, 1287,
1275, 1263, 1251, 1239, 1227, 1215, 1203, 1191,
1179, 1167, 1155, 1143, 1131, 1119, 1107, 1095,
1082, 1070, 1058, 1046, 1034, 1022, 1009, 997,
985, 973, 960, 948, 936, 924, 911, 899,
887, 875, 862, 850, 838, 825, 813, 801,
788, 776, 764, 751, 739, 726, 714, 702,
689, 677, 664, 652, 640, 627, 615, 602,
590, 577, 565, 552, 540, 527, 515, 502,
490, 477, 465, 452, 440, 427, 415, 402,
390, 377, 365, 352, 340, 327, 314, 302,
289, 277, 264, 252, 239, 227, 214, 201,
189, 176, 164, 151, 138, 126, 113, 101,
88, 76, 63, 50, 38, 25, 13, 0,
};

22
stereo_mix/resources/lookup_tables.py
View file

@ -1,30 +1,30 @@
import numpy
import numpy as np
lookup_tables = []
lookup_tables_32 = []
ADC_RESOLUTION = 512
OUTPUT_RESOLUTION = 4096
# linear to exponential conversion
values = []
size = 512.0
size = ADC_RESOLUTION
for x in range(1, int(size) + 1):
values.append(numpy.power(x / 512.0, 2) * size)
values.append(np.power(x / float(ADC_RESOLUTION), 2) * OUTPUT_RESOLUTION)
lookup_tables.append(('linear_to_exp', values))
# Left pan Lookup table
l_pan = numpy.arange(0, 512)
r_pan = numpy.arange(0, 512)
l_pan = np.linspace(0, OUTPUT_RESOLUTION, num=ADC_RESOLUTION)
r_pan = np.linspace(0, OUTPUT_RESOLUTION, num=ADC_RESOLUTION)
l_pan = numpy.sin((l_pan / 512.0) * (numpy.pi / 2.0))
r_pan = numpy.cos((r_pan / 512.0) * (numpy.pi / 2.0))
l_pan = np.sin((l_pan / OUTPUT_RESOLUTION) * (np.pi / 2.0))
r_pan = np.cos((r_pan / OUTPUT_RESOLUTION) * (np.pi / 2.0))
l_pan = numpy.round(l_pan * 512)
r_pan = numpy.round(r_pan * 512)
r_pan[511] = 0 # dirty fix
l_pan = np.round(l_pan * OUTPUT_RESOLUTION)
r_pan = np.round(r_pan * OUTPUT_RESOLUTION)
lookup_tables.append(('left_sin_pan', l_pan))
lookup_tables.append(('right_cos_pan', r_pan))

18
stereo_mix/stereo_mix.cc
View file

@ -8,8 +8,6 @@
#include "avrlib/watchdog_timer.h"
#include "stereo_mix/resources.h"
#define degToRad(angleInDegrees) ((angleInDegrees)*M_PI / 180.0)
using namespace avrlib;
using namespace stereo_mix;
@ -55,19 +53,19 @@ int main(void)
AnalogInputs::set_num_inputs(8);
#define WRITE(DAC, ODAC, N) \
DAC::Write((volume[N] * pan[N * NUM_CHANNELS]) >> 8, 0); \
ODAC::Write((volume[N] * pan[N * NUM_CHANNELS]) >> 8, 0); \
DAC::Write((volume[N] * pan[N * NUM_CHANNELS + 1]) >> 8, 1); \
ODAC::Write((volume[N] * pan[N * NUM_CHANNELS + 1]) >> 8, 1);
#define WRITE(DAC, ODAC, N) \
DAC::Write((volume[N] * pan[N * NUM_CHANNELS]) >> 12, 0); \
ODAC::Write((volume[N] * pan[N * NUM_CHANNELS]) >> 12, 0); \
DAC::Write((volume[N] * pan[N * NUM_CHANNELS + 1]) >> 12, 1); \
ODAC::Write((volume[N] * pan[N * NUM_CHANNELS + 1]) >> 12, 1);
while (true) {
ResetWatchdog();
int i = AnalogInputs::current_pin() % NUM_CHANNELS;
volume[i] = pgm_read_word_near(lut_res_linear_to_exp + (AnalogInputs::Read(i) >> 1)) << 1;
pan[i * NUM_CHANNELS] = pgm_read_word(lut_res_left_sin_pan + (AnalogInputs::Read(i + NUM_CHANNELS) >> 1)) << 1;
pan[i * NUM_CHANNELS + 1] = pgm_read_word(lut_res_right_cos_pan + (AnalogInputs::Read(i + NUM_CHANNELS) >> 1)) << 1;
volume[i] = pgm_read_word_near(lut_res_linear_to_exp + (AnalogInputs::Read(i) >> 1));
pan[i * NUM_CHANNELS] = pgm_read_word(lut_res_left_sin_pan + (AnalogInputs::Read(i + NUM_CHANNELS) >> 1));
pan[i * NUM_CHANNELS + 1] = pgm_read_word(lut_res_right_cos_pan + (AnalogInputs::Read(i + NUM_CHANNELS) >> 1));
switch (i) {
case 0: