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display.c
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display.c
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#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "ch.h"
#include "hal.h"
#include "chprintf.h"
#include "nanosdr.h"
#include "arm_math.h"
// result is 8.8 format
uint16_t
log2_q31(uint32_t x)
{
uint32_t mask = 0xffff0000;
uint16_t bit = 16;
uint16_t y = 32;//-15;
uint8_t i;
if (x == 0)
return 0;
// 16
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 8
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 4
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 2
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 1
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
// msb should be 1. take next 8 bits.
i = (x >> 23) & 0xff;
// lookup logarythm table
return (y << 8) | i;
}
static inline uint16_t
log2_i64(uint64_t x)
{
uint64_t mask = 0xffffffff00000000;
uint16_t bit = 32;
int16_t y = 63;
uint8_t i;
if (x == 0)
return 0;
// 32
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 16
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 8
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 4
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 2
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
bit >>= 1;
mask <<= bit;
// 1
if ((x & mask) == 0) {
x <<= bit;
y -= bit;
}
// msb should be 1. take next 8 bits.
i = (x >> (63-8)) & 0xff;
// lookup logarythm table
return (y << 8) | i;
}
// half of 1024pt window function
const int16_t winfunc_hamming[] = {
// hamming
2621, 2622, 2622, 2624, 2626, 2628, 2632, 2635,
2640, 2644, 2650, 2656, 2662, 2669, 2677, 2685,
2694, 2703, 2713, 2724, 2735, 2747, 2759, 2772,
2785, 2799, 2813, 2828, 2844, 2860, 2877, 2894,
2912, 2930, 2949, 2968, 2988, 3009, 3030, 3052,
3074, 3097, 3120, 3144, 3168, 3193, 3219, 3245,
3272, 3299, 3327, 3355, 3384, 3413, 3443, 3473,
3504, 3536, 3568, 3600, 3633, 3667, 3701, 3736,
3771, 3807, 3843, 3880, 3917, 3955, 3993, 4032,
4071, 4111, 4152, 4192, 4234, 4276, 4318, 4361,
4405, 4448, 4493, 4538, 4583, 4629, 4676, 4722,
4770, 4818, 4866, 4915, 4964, 5014, 5064, 5115,
5166, 5218, 5270, 5323, 5376, 5430, 5484, 5538,
5593, 5649, 5704, 5761, 5818, 5875, 5932, 5991,
6049, 6108, 6168, 6227, 6288, 6348, 6410, 6471,
6533, 6596, 6659, 6722, 6785, 6850, 6914, 6979,
7044, 7110, 7176, 7243, 7310, 7377, 7444, 7513,
7581, 7650, 7719, 7789, 7859, 7929, 8000, 8071,
8142, 8214, 8286, 8359, 8431, 8505, 8578, 8652,
8726, 8801, 8876, 8951, 9027, 9103, 9179, 9255,
9332, 9409, 9487, 9565, 9643, 9721, 9800, 9879,
9958, 10038, 10118, 10198, 10278, 10359, 10440, 10521,
10603, 10685, 10767, 10849, 10932, 11015, 11098, 11181,
11265, 11349, 11433, 11517, 11602, 11686, 11771, 11857,
11942, 12028, 12114, 12200, 12286, 12373, 12459, 12546,
12633, 12721, 12808, 12896, 12984, 13072, 13160, 13248,
13337, 13425, 13514, 13603, 13693, 13782, 13871, 13961,
14051, 14141, 14231, 14321, 14411, 14502, 14592, 14683,
14773, 14864, 14955, 15046, 15138, 15229, 15320, 15412,
15503, 15595, 15687, 15778, 15870, 15962, 16054, 16146,
16238, 16331, 16423, 16515, 16607, 16700, 16792, 16885,
16977, 17069, 17162, 17255, 17347, 17440, 17532, 17625,
17717, 17810, 17902, 17995, 18088, 18180, 18273, 18365,
18458, 18550, 18642, 18735, 18827, 18919, 19012, 19104,
19196, 19288, 19380, 19472, 19564, 19656, 19748, 19839,
19931, 20022, 20114, 20205, 20296, 20387, 20479, 20569,
20660, 20751, 20842, 20932, 21022, 21113, 21203, 21293,
21383, 21472, 21562, 21651, 21740, 21830, 21918, 22007,
22096, 22184, 22273, 22361, 22449, 22536, 22624, 22711,
22799, 22886, 22972, 23059, 23145, 23232, 23318, 23403,
23489, 23574, 23659, 23744, 23829, 23914, 23998, 24082,
24165, 24249, 24332, 24415, 24498, 24580, 24663, 24745,
24826, 24908, 24989, 25070, 25150, 25231, 25311, 25390,
25470, 25549, 25628, 25706, 25785, 25863, 25940, 26018,
26095, 26171, 26248, 26324, 26400, 26475, 26550, 26625,
26699, 26773, 26847, 26920, 26993, 27066, 27138, 27210,
27282, 27353, 27424, 27495, 27565, 27635, 27704, 27773,
27842, 27910, 27978, 28045, 28112, 28179, 28245, 28311,
28377, 28442, 28507, 28571, 28635, 28698, 28761, 28824,
28886, 28948, 29009, 29070, 29131, 29191, 29251, 29310,
29369, 29427, 29485, 29542, 29599, 29656, 29712, 29768,
29823, 29877, 29932, 29986, 30039, 30092, 30144, 30196,
30248, 30299, 30349, 30399, 30449, 30498, 30546, 30595,
30642, 30689, 30736, 30782, 30828, 30873, 30918, 30962,
31006, 31049, 31091, 31134, 31175, 31216, 31257, 31297,
31337, 31376, 31414, 31453, 31490, 31527, 31564, 31600,
31635, 31670, 31704, 31738, 31772, 31804, 31837, 31869,
31900, 31930, 31961, 31990, 32019, 32048, 32076, 32103,
32130, 32156, 32182, 32208, 32232, 32256, 32280, 32303,
32326, 32348, 32369, 32390, 32410, 32430, 32449, 32468,
32486, 32503, 32520, 32537, 32553, 32568, 32583, 32597,
32610, 32623, 32636, 32648, 32659, 32670, 32680, 32690,
32699, 32707, 32715, 32723, 32729, 32736, 32741, 32746,
32751, 32755, 32758, 32761, 32764, 32765, 32766, 32767,
32767, 32766, 32765, 32764, 32761, 32758, 32755, 32751,
32746, 32741, 32736, 32729, 32723, 32715, 32707, 32699,
32690, 32680, 32670, 32659, 32648, 32636, 32623, 32610,
32597, 32583, 32568, 32553, 32537, 32520, 32503, 32486,
32468, 32449, 32430, 32410, 32390, 32369, 32348, 32326,
32303, 32280, 32256, 32232, 32208, 32182, 32156, 32130,
32103, 32076, 32048, 32019, 31990, 31961, 31930, 31900,
31869, 31837, 31804, 31772, 31738, 31704, 31670, 31635,
31600, 31564, 31527, 31490, 31453, 31414, 31376, 31337,
31297, 31257, 31216, 31175, 31134, 31091, 31049, 31006,
30962, 30918, 30873, 30828, 30782, 30736, 30689, 30642,
30595, 30546, 30498, 30449, 30399, 30349, 30299, 30248,
30196, 30144, 30092, 30039, 29986, 29932, 29877, 29823,
29768, 29712, 29656, 29599, 29542, 29485, 29427, 29369,
29310, 29251, 29191, 29131, 29070, 29009, 28948, 28886,
28824, 28761, 28698, 28635, 28571, 28507, 28442, 28377,
28311, 28245, 28179, 28112, 28045, 27978, 27910, 27842,
27773, 27704, 27635, 27565, 27495, 27424, 27353, 27282,
27210, 27138, 27066, 26993, 26920, 26847, 26773, 26699,
26625, 26550, 26475, 26400, 26324, 26248, 26171, 26095,
26018, 25940, 25863, 25785, 25706, 25628, 25549, 25470,
25390, 25311, 25231, 25150, 25070, 24989, 24908, 24826,
24745, 24663, 24580, 24498, 24415, 24332, 24249, 24165,
24082, 23998, 23914, 23829, 23744, 23659, 23574, 23489,
23403, 23318, 23232, 23145, 23059, 22972, 22886, 22799,
22711, 22624, 22536, 22449, 22361, 22273, 22184, 22096,
22007, 21918, 21830, 21740, 21651, 21562, 21472, 21383,
21293, 21203, 21113, 21022, 20932, 20842, 20751, 20660,
20569, 20479, 20387, 20296, 20205, 20114, 20022, 19931,
19839, 19748, 19656, 19564, 19472, 19380, 19288, 19196,
19104, 19012, 18919, 18827, 18735, 18642, 18550, 18458,
18365, 18273, 18180, 18088, 17995, 17902, 17810, 17717,
17625, 17532, 17440, 17347, 17255, 17162, 17069, 16977,
16885, 16792, 16700, 16607, 16515, 16423, 16331, 16238,
16146, 16054, 15962, 15870, 15778, 15687, 15595, 15503,
15412, 15320, 15229, 15138, 15046, 14955, 14864, 14773,
14683, 14592, 14502, 14411, 14321, 14231, 14141, 14051,
13961, 13871, 13782, 13693, 13603, 13514, 13425, 13337,
13248, 13160, 13072, 12984, 12896, 12808, 12721, 12633,
12546, 12459, 12373, 12286, 12200, 12114, 12028, 11942,
11857, 11771, 11686, 11602, 11517, 11433, 11349, 11265,
11181, 11098, 11015, 10932, 10849, 10767, 10685, 10603,
10521, 10440, 10359, 10278, 10198, 10118, 10038, 9958,
9879, 9800, 9721, 9643, 9565, 9487, 9409, 9332,
9255, 9179, 9103, 9027, 8951, 8876, 8801, 8726,
8652, 8578, 8505, 8431, 8359, 8286, 8214, 8142,
8071, 8000, 7929, 7859, 7789, 7719, 7650, 7581,
7513, 7444, 7377, 7310, 7243, 7176, 7110, 7044,
6979, 6914, 6850, 6785, 6722, 6659, 6596, 6533,
6471, 6410, 6348, 6288, 6227, 6168, 6108, 6049,
5991, 5932, 5875, 5818, 5761, 5704, 5649, 5593,
5538, 5484, 5430, 5376, 5323, 5270, 5218, 5166,
5115, 5064, 5014, 4964, 4915, 4866, 4818, 4770,
4722, 4676, 4629, 4583, 4538, 4493, 4448, 4405,
4361, 4318, 4276, 4234, 4192, 4152, 4111, 4071,
4032, 3993, 3955, 3917, 3880, 3843, 3807, 3771,
3736, 3701, 3667, 3633, 3600, 3568, 3536, 3504,
3473, 3443, 3413, 3384, 3355, 3327, 3299, 3272,
3245, 3219, 3193, 3168, 3144, 3120, 3097, 3074,
3052, 3030, 3009, 2988, 2968, 2949, 2930, 2912,
2894, 2877, 2860, 2844, 2828, 2813, 2799, 2785,
2772, 2759, 2747, 2735, 2724, 2713, 2703, 2694,
2685, 2677, 2669, 2662, 2656, 2650, 2644, 2640,
2635, 2632, 2628, 2626, 2624, 2622, 2622, 2621
};
const int16_t winfunc_blackmanharris[] = {
// blackman-harris
2, 2, 2, 2, 2, 2, 3, 3,
3, 3, 4, 4, 5, 5, 5, 6,
7, 7, 8, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20,
22, 23, 24, 26, 27, 29, 31, 32,
34, 36, 38, 40, 42, 44, 46, 48,
51, 53, 56, 58, 61, 64, 67, 70,
73, 76, 79, 82, 86, 89, 93, 97,
100, 104, 109, 113, 117, 122, 126, 131,
136, 141, 146, 151, 156, 162, 168, 173,
179, 186, 192, 198, 205, 212, 219, 226,
233, 241, 249, 256, 265, 273, 281, 290,
299, 308, 317, 327, 337, 347, 357, 367,
378, 389, 400, 411, 423, 435, 447, 459,
472, 485, 498, 512, 526, 540, 554, 569,
584, 599, 614, 630, 646, 663, 680, 697,
714, 732, 750, 769, 788, 807, 827, 846,
867, 887, 908, 930, 952, 974, 996, 1019,
1043, 1066, 1091, 1115, 1140, 1166, 1192, 1218,
1245, 1272, 1299, 1327, 1356, 1385, 1414, 1444,
1475, 1506, 1537, 1569, 1601, 1634, 1667, 1701,
1735, 1770, 1805, 1841, 1878, 1915, 1952, 1990,
2029, 2068, 2107, 2147, 2188, 2229, 2271, 2314,
2357, 2400, 2444, 2489, 2534, 2580, 2627, 2674,
2721, 2770, 2819, 2868, 2918, 2969, 3020, 3072,
3125, 3178, 3232, 3287, 3342, 3398, 3454, 3511,
3569, 3628, 3687, 3746, 3807, 3868, 3930, 3992,
4055, 4119, 4183, 4249, 4314, 4381, 4448, 4516,
4585, 4654, 4724, 4794, 4866, 4938, 5010, 5084,
5158, 5233, 5308, 5385, 5462, 5539, 5618, 5697,
5776, 5857, 5938, 6020, 6103, 6186, 6270, 6355,
6440, 6526, 6613, 6700, 6789, 6878, 6967, 7058,
7149, 7240, 7333, 7426, 7520, 7614, 7710, 7805,
7902, 7999, 8097, 8196, 8295, 8395, 8496, 8597,
8699, 8802, 8905, 9009, 9114, 9219, 9325, 9431,
9539, 9646, 9755, 9864, 9974, 10084, 10195, 10306,
10419, 10531, 10645, 10759, 10873, 10988, 11104, 11220,
11337, 11454, 11572, 11691, 11810, 11929, 12049, 12170,
12291, 12412, 12534, 12657, 12780, 12903, 13027, 13152,
13277, 13402, 13528, 13654, 13781, 13908, 14035, 14163,
14291, 14420, 14549, 14678, 14808, 14938, 15068, 15199,
15330, 15461, 15593, 15725, 15857, 15989, 16122, 16255,
16388, 16522, 16655, 16789, 16923, 17058, 17192, 17327,
17461, 17596, 17731, 17867, 18002, 18137, 18273, 18408,
18544, 18680, 18815, 18951, 19087, 19223, 19358, 19494,
19630, 19765, 19901, 20037, 20172, 20308, 20443, 20578,
20713, 20848, 20983, 21118, 21252, 21386, 21520, 21654,
21788, 21921, 22054, 22187, 22320, 22452, 22584, 22716,
22847, 22978, 23109, 23239, 23369, 23499, 23628, 23757,
23885, 24013, 24140, 24267, 24394, 24520, 24645, 24770,
24894, 25018, 25142, 25264, 25386, 25508, 25629, 25749,
25869, 25988, 26106, 26224, 26341, 26457, 26573, 26688,
26802, 26915, 27028, 27139, 27251, 27361, 27470, 27579,
27687, 27794, 27900, 28005, 28109, 28213, 28315, 28417,
28518, 28617, 28716, 28814, 28911, 29007, 29102, 29196,
29288, 29380, 29471, 29561, 29650, 29737, 29824, 29909,
29994, 30077, 30159, 30240, 30320, 30399, 30477, 30553,
30628, 30702, 30775, 30847, 30918, 30987, 31055, 31122,
31188, 31252, 31315, 31377, 31438, 31497, 31555, 31612,
31667, 31721, 31774, 31826, 31876, 31925, 31972, 32019,
32064, 32107, 32149, 32190, 32230, 32268, 32304, 32340,
32374, 32406, 32438, 32467, 32496, 32523, 32548, 32573,
32595, 32617, 32637, 32655, 32672, 32688, 32702, 32715,
32727, 32737, 32745, 32753, 32758, 32763, 32765, 32767,
32767, 32765, 32763, 32758, 32753, 32745, 32737, 32727,
32715, 32702, 32688, 32672, 32655, 32637, 32617, 32595,
32573, 32548, 32523, 32496, 32467, 32438, 32406, 32374,
32340, 32304, 32268, 32230, 32190, 32149, 32107, 32064,
32019, 31972, 31925, 31876, 31826, 31774, 31721, 31667,
31612, 31555, 31497, 31438, 31377, 31315, 31252, 31188,
31122, 31055, 30987, 30918, 30847, 30775, 30702, 30628,
30553, 30477, 30399, 30320, 30240, 30159, 30077, 29994,
29909, 29824, 29737, 29650, 29561, 29471, 29380, 29288,
29196, 29102, 29007, 28911, 28814, 28716, 28617, 28518,
28417, 28315, 28213, 28109, 28005, 27900, 27794, 27687,
27579, 27470, 27361, 27251, 27139, 27028, 26915, 26802,
26688, 26573, 26457, 26341, 26224, 26106, 25988, 25869,
25749, 25629, 25508, 25386, 25264, 25142, 25018, 24894,
24770, 24645, 24520, 24394, 24267, 24140, 24013, 23885,
23757, 23628, 23499, 23369, 23239, 23109, 22978, 22847,
22716, 22584, 22452, 22320, 22187, 22054, 21921, 21788,
21654, 21520, 21386, 21252, 21118, 20983, 20848, 20713,
20578, 20443, 20308, 20172, 20037, 19901, 19765, 19630,
19494, 19358, 19223, 19087, 18951, 18815, 18680, 18544,
18408, 18273, 18137, 18002, 17867, 17731, 17596, 17461,
17327, 17192, 17058, 16923, 16789, 16655, 16522, 16388,
16255, 16122, 15989, 15857, 15725, 15593, 15461, 15330,
15199, 15068, 14938, 14808, 14678, 14549, 14420, 14291,
14163, 14035, 13908, 13781, 13654, 13528, 13402, 13277,
13152, 13027, 12903, 12780, 12657, 12534, 12412, 12291,
12170, 12049, 11929, 11810, 11691, 11572, 11454, 11337,
11220, 11104, 10988, 10873, 10759, 10645, 10531, 10419,
10306, 10195, 10084, 9974, 9864, 9755, 9646, 9539,
9431, 9325, 9219, 9114, 9009, 8905, 8802, 8699,
8597, 8496, 8395, 8295, 8196, 8097, 7999, 7902,
7805, 7710, 7614, 7520, 7426, 7333, 7240, 7149,
7058, 6967, 6878, 6789, 6700, 6613, 6526, 6440,
6355, 6270, 6186, 6103, 6020, 5938, 5857, 5776,
5697, 5618, 5539, 5462, 5385, 5308, 5233, 5158,
5084, 5010, 4938, 4866, 4794, 4724, 4654, 4585,
4516, 4448, 4381, 4314, 4249, 4183, 4119, 4055,
3992, 3930, 3868, 3807, 3746, 3687, 3628, 3569,
3511, 3454, 3398, 3342, 3287, 3232, 3178, 3125,
3072, 3020, 2969, 2918, 2868, 2819, 2770, 2721,
2674, 2627, 2580, 2534, 2489, 2444, 2400, 2357,
2314, 2271, 2229, 2188, 2147, 2107, 2068, 2029,
1990, 1952, 1915, 1878, 1841, 1805, 1770, 1735,
1701, 1667, 1634, 1601, 1569, 1537, 1506, 1475,
1444, 1414, 1385, 1356, 1327, 1299, 1272, 1245,
1218, 1192, 1166, 1140, 1115, 1091, 1066, 1043,
1019, 996, 974, 952, 930, 908, 887, 867,
846, 827, 807, 788, 769, 750, 732, 714,
697, 680, 663, 646, 630, 614, 599, 584,
569, 554, 540, 526, 512, 498, 485, 472,
459, 447, 435, 423, 411, 400, 389, 378,
367, 357, 347, 337, 327, 317, 308, 299,
290, 281, 273, 265, 256, 249, 241, 233,
226, 219, 212, 205, 198, 192, 186, 179,
173, 168, 162, 156, 151, 146, 141, 136,
131, 126, 122, 117, 113, 109, 104, 100,
97, 93, 89, 86, 82, 79, 76, 73,
70, 67, 64, 61, 58, 56, 53, 51,
48, 46, 44, 42, 40, 38, 36, 34,
32, 31, 29, 27, 26, 24, 23, 22,
20, 19, 18, 17, 16, 15, 14, 13,
12, 11, 10, 9, 8, 8, 7, 7,
6, 5, 5, 5, 4, 4, 3, 3,
3, 3, 2, 2, 2, 2, 2, 2
};
const int16_t winfunc_chebychef[] = {
// chebychef
67, 10, 10, 11, 12, 13, 14, 14,
15, 16, 17, 18, 19, 21, 22, 23,
24, 26, 27, 28, 30, 31, 33, 35,
36, 38, 40, 42, 44, 46, 48, 50,
52, 54, 57, 59, 62, 64, 67, 70,
73, 76, 79, 82, 85, 88, 92, 95,
99, 103, 107, 111, 115, 119, 123, 128,
132, 137, 141, 146, 151, 157, 162, 167,
173, 179, 185, 191, 197, 203, 210, 216,
223, 230, 237, 245, 252, 260, 268, 276,
284, 292, 301, 310, 319, 328, 337, 347,
357, 367, 377, 387, 398, 409, 420, 432,
443, 455, 467, 480, 492, 505, 518, 532,
545, 559, 573, 588, 603, 618, 633, 649,
665, 681, 697, 714, 731, 749, 767, 785,
803, 822, 841, 861, 880, 900, 921, 942,
963, 985, 1006, 1029, 1051, 1074, 1098, 1122,
1146, 1170, 1195, 1221, 1247, 1273, 1299, 1327,
1354, 1382, 1410, 1439, 1468, 1498, 1528, 1558,
1589, 1621, 1653, 1685, 1718, 1751, 1785, 1819,
1854, 1889, 1925, 1961, 1998, 2035, 2073, 2111,
2150, 2189, 2229, 2269, 2310, 2352, 2394, 2436,
2479, 2523, 2567, 2611, 2657, 2702, 2749, 2796,
2843, 2891, 2940, 2989, 3039, 3089, 3140, 3192,
3244, 3297, 3350, 3404, 3459, 3514, 3570, 3626,
3683, 3741, 3799, 3858, 3917, 3977, 4038, 4100,
4162, 4224, 4288, 4351, 4416, 4481, 4547, 4614,
4681, 4749, 4817, 4886, 4956, 5026, 5097, 5169,
5242, 5315, 5388, 5463, 5538, 5613, 5690, 5767,
5844, 5923, 6002, 6081, 6162, 6243, 6324, 6407,
6490, 6573, 6658, 6743, 6828, 6914, 7001, 7089,
7177, 7266, 7356, 7446, 7537, 7628, 7720, 7813,
7907, 8001, 8095, 8191, 8287, 8383, 8481, 8578,
8677, 8776, 8876, 8976, 9077, 9179, 9281, 9384,
9487, 9591, 9696, 9801, 9907, 10013, 10120, 10228,
10336, 10444, 10554, 10663, 10774, 10884, 10996, 11108,
11220, 11333, 11447, 11561, 11675, 11790, 11906, 12022,
12139, 12256, 12373, 12491, 12610, 12728, 12848, 12968,
13088, 13208, 13329, 13451, 13573, 13695, 13818, 13941,
14064, 14188, 14312, 14437, 14562, 14687, 14813, 14939,
15065, 15191, 15318, 15445, 15573, 15700, 15828, 15956,
16085, 16214, 16342, 16472, 16601, 16730, 16860, 16990,
17120, 17250, 17381, 17511, 17642, 17773, 17904, 18035,
18166, 18297, 18428, 18560, 18691, 18823, 18954, 19086,
19217, 19349, 19480, 19611, 19743, 19874, 20006, 20137,
20268, 20399, 20530, 20661, 20792, 20922, 21053, 21183,
21313, 21443, 21573, 21703, 21832, 21961, 22090, 22219,
22347, 22475, 22603, 22731, 22858, 22985, 23111, 23238,
23363, 23489, 23614, 23739, 23863, 23987, 24111, 24234,
24356, 24479, 24600, 24721, 24842, 24962, 25082, 25201,
25320, 25438, 25555, 25672, 25789, 25904, 26020, 26134,
26248, 26361, 26474, 26586, 26697, 26807, 26917, 27026,
27135, 27242, 27349, 27455, 27561, 27665, 27769, 27872,
27974, 28076, 28176, 28276, 28375, 28473, 28570, 28666,
28761, 28856, 28949, 29042, 29133, 29224, 29314, 29402,
29490, 29577, 29663, 29748, 29831, 29914, 29996, 30077,
30156, 30235, 30312, 30389, 30464, 30539, 30612, 30684,
30755, 30825, 30893, 30961, 31028, 31093, 31157, 31220,
31282, 31342, 31402, 31460, 31517, 31573, 31628, 31681,
31733, 31784, 31834, 31882, 31930, 31976, 32020, 32064,
32106, 32147, 32187, 32225, 32262, 32298, 32333, 32366,
32398, 32428, 32458, 32486, 32512, 32538, 32562, 32585,
32606, 32626, 32645, 32662, 32678, 32693, 32707, 32719,
32729, 32739, 32747, 32754, 32759, 32763, 32766, 32767,
32767, 32766, 32763, 32759, 32754, 32747, 32739, 32729,
32719, 32707, 32693, 32678, 32662, 32645, 32626, 32606,
32585, 32562, 32538, 32512, 32486, 32458, 32428, 32398,
32366, 32333, 32298, 32262, 32225, 32187, 32147, 32106,
32064, 32020, 31976, 31930, 31882, 31834, 31784, 31733,
31681, 31628, 31573, 31517, 31460, 31402, 31342, 31282,
31220, 31157, 31093, 31028, 30961, 30893, 30825, 30755,
30684, 30612, 30539, 30464, 30389, 30312, 30235, 30156,
30077, 29996, 29914, 29831, 29748, 29663, 29577, 29490,
29402, 29314, 29224, 29133, 29042, 28949, 28856, 28761,
28666, 28570, 28473, 28375, 28276, 28176, 28076, 27974,
27872, 27769, 27665, 27561, 27455, 27349, 27242, 27135,
27026, 26917, 26807, 26697, 26586, 26474, 26361, 26248,
26134, 26020, 25904, 25789, 25672, 25555, 25438, 25320,
25201, 25082, 24962, 24842, 24721, 24600, 24479, 24356,
24234, 24111, 23987, 23863, 23739, 23614, 23489, 23363,
23238, 23111, 22985, 22858, 22731, 22603, 22475, 22347,
22219, 22090, 21961, 21832, 21703, 21573, 21443, 21313,
21183, 21053, 20922, 20792, 20661, 20530, 20399, 20268,
20137, 20006, 19874, 19743, 19611, 19480, 19349, 19217,
19086, 18954, 18823, 18691, 18560, 18428, 18297, 18166,
18035, 17904, 17773, 17642, 17511, 17381, 17250, 17120,
16990, 16860, 16730, 16601, 16472, 16342, 16214, 16085,
15956, 15828, 15700, 15573, 15445, 15318, 15191, 15065,
14939, 14813, 14687, 14562, 14437, 14312, 14188, 14064,
13941, 13818, 13695, 13573, 13451, 13329, 13208, 13088,
12968, 12848, 12728, 12610, 12491, 12373, 12256, 12139,
12022, 11906, 11790, 11675, 11561, 11447, 11333, 11220,
11108, 10996, 10884, 10774, 10663, 10554, 10444, 10336,
10228, 10120, 10013, 9907, 9801, 9696, 9591, 9487,
9384, 9281, 9179, 9077, 8976, 8876, 8776, 8677,
8578, 8481, 8383, 8287, 8191, 8095, 8001, 7907,
7813, 7720, 7628, 7537, 7446, 7356, 7266, 7177,
7089, 7001, 6914, 6828, 6743, 6658, 6573, 6490,
6407, 6324, 6243, 6162, 6081, 6002, 5923, 5844,
5767, 5690, 5613, 5538, 5463, 5388, 5315, 5242,
5169, 5097, 5026, 4956, 4886, 4817, 4749, 4681,
4614, 4547, 4481, 4416, 4351, 4288, 4224, 4162,
4100, 4038, 3977, 3917, 3858, 3799, 3741, 3683,
3626, 3570, 3514, 3459, 3404, 3350, 3297, 3244,
3192, 3140, 3089, 3039, 2989, 2940, 2891, 2843,
2796, 2749, 2702, 2657, 2611, 2567, 2523, 2479,
2436, 2394, 2352, 2310, 2269, 2229, 2189, 2150,
2111, 2073, 2035, 1998, 1961, 1925, 1889, 1854,
1819, 1785, 1751, 1718, 1685, 1653, 1621, 1589,
1558, 1528, 1498, 1468, 1439, 1410, 1382, 1354,
1327, 1299, 1273, 1247, 1221, 1195, 1170, 1146,
1122, 1098, 1074, 1051, 1029, 1006, 985, 963,
942, 921, 900, 880, 861, 841, 822, 803,
785, 767, 749, 731, 714, 697, 681, 665,
649, 633, 618, 603, 588, 573, 559, 545,
532, 518, 505, 492, 480, 467, 455, 443,
432, 420, 409, 398, 387, 377, 367, 357,
347, 337, 328, 319, 310, 301, 292, 284,
276, 268, 260, 252, 245, 237, 230, 223,
216, 210, 203, 197, 191, 185, 179, 173,
167, 162, 157, 151, 146, 141, 137, 132,
128, 123, 119, 115, 111, 107, 103, 99,
95, 92, 88, 85, 82, 79, 76, 73,
70, 67, 64, 62, 59, 57, 54, 52,
50, 48, 46, 44, 42, 40, 38, 36,
35, 33, 31, 30, 28, 27, 26, 24,
23, 22, 21, 19, 18, 17, 16, 15,
14, 14, 13, 12, 11, 10, 10, 67
};
const int16_t *winfunc_table = winfunc_hamming;
void
set_window_function(int wf_type)
{
if (wf_type == 0)
winfunc_table = winfunc_blackmanharris;
else if (wf_type == 1)
winfunc_table = winfunc_hamming;
else if (wf_type == 2)
winfunc_table = winfunc_chebychef;
}
arm_cfft_radix4_instance_q31 cfft_inst;
//#define mag(r,i) (q31_t)(((q63_t)r*r)>>33)+(q31_t)(((q63_t)i*i)>>33)
static int mag_shift = 0;
#define BG_ACTIVE RGB565(15,10,10)
#define BG_NORMAL 0x0000
#define FG_ACTIVE RGB565(128,255,128)
#define FG_NORMAL 0xffff
uistat_t uistat;
typedef struct {
uint32_t sample_freq;
int16_t offset;
int16_t stride;
int16_t overgain;
int16_t origin;
int16_t tickstep;
int16_t tickbase;
int16_t tickunit;
const char *unitname;
} spectrumdisplay_param_t;
// 320pixel = 1024pt = 48kHz
// 35.55 pixel = 5kHz
const spectrumdisplay_param_t spdispparam_tbl[SPDISP_MODE_MAX] = {
// sps, off, stride, gain, origin, step, base, unit, unitname
{ 48000, -160*3, 3, 0, 160, 36, 0, 5, "kHz" },
{ 48000, -160*3, 3, 0, 160, 36, 0, 5, "kHz" },
{ 48000, -160*2, 2, 0, 160, 21, 0, 2, "kHz" },
{ 48000, 0, 1, 0, 0, 43, 0, 2, "kHz" }
};
const spectrumdisplay_param_t spdispparam_tbl_192khz[SPDISP_MODE_MAX] = {
// sps, off, stride, gain, origin, step, base, unit, unitname
{ 192000, -160*3, 3, 0, 160, 36, 0, 20, "kHz" },
{ 192000, -160*3, 3, 0, 160, 36, 0, 20, "kHz" },
{ 192000, -160*2, 2, 0, 160, 26, 0, 10, "kHz" },
{ 192000, 0, 1, 0, 0, 26, 0, 5, "kHz" }
};
#define GET_SPDISP_PARAM(mode) \
((uistat.fs == 192) ? &spdispparam_tbl_192khz[mode] : &spdispparam_tbl[mode])
// when event sent with SEV from M4 core, filled following data
typedef struct {
q31_t *buffer;
uint32_t buffer_rest;
uint8_t update_flag;
} spectrumdisplay_t;
// update_flag
#define FLAG_SPDISP (1<<0)
#define FLAG_POWER (1<<1)
#define FLAG_UI (1<<2)
#define FLAG_AUX_INFO (1<<3)
spectrumdisplay_t spdispinfo;
#define SPDISP_BUFFER_LENGTH 2048
q31_t SPDISP_BUFFER[SPDISP_BUFFER_LENGTH];
q31_t *spdisp_fetch_current = SPDISP_BUFFER;
int16_t spdisp_fetch_rest = 0;
const int16_t *spdisp_wf_current = winfunc_blackmanharris;
__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __SMULBB(uint32_t op1, uint32_t op2)
{
uint32_t result;
__ASM volatile ("smulbb %0, %1, %2" : "=r" (result) : "r" (op1), "r" (op2) );
return(result);
}
__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __SMULTT(uint32_t op1, uint32_t op2)
{
uint32_t result;
__ASM volatile ("smultt %0, %1, %2" : "=r" (result) : "r" (op1), "r" (op2) );
return(result);
}
__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __SMULTB(uint32_t op1, uint32_t op2)
{
uint32_t result;
__ASM volatile ("smultb %0, %1, %2" : "=r" (result) : "r" (op1), "r" (op2) );
return(result);
}
__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __SMULBT(uint32_t op1, uint32_t op2)
{
uint32_t result;
__ASM volatile ("smulbt %0, %1, %2" : "=r" (result) : "r" (op1), "r" (op2) );
return(result);
}
// copy samples from 16bit into 32bit with applying window function
inline static void
window_complex_15to31(q15_t *s1, q15_t *s2, size_t length)
{
q31_t *dest = spdisp_fetch_current;
const q15_t *wf = spdisp_wf_current;
spdisp_fetch_current += length * 2;
spdisp_fetch_rest -= length * 2;
spdisp_wf_current += length;
length /= 2;
while (length-- > 0) {
uint32_t w = *__SIMD32(wf)++;
uint32_t i1i2 = *__SIMD32(s1)++;
uint32_t q1q2 = *__SIMD32(s2)++;
*dest++ = __SMULBB(i1i2, w) << mag_shift;
*dest++ = __SMULBB(q1q2, w) << mag_shift;
*dest++ = __SMULTT(i1i2, w) << mag_shift;
*dest++ = __SMULTT(q1q2, w) << mag_shift;
}
}
inline static void
window_real_15to31(q15_t *s1, size_t length)
{
q31_t *dest = spdisp_fetch_current;
const q15_t *wf = spdisp_wf_current;
spdisp_fetch_current += length * 2;
spdisp_fetch_rest -= length * 2;
spdisp_wf_current += length;
length /= 2;
while (length-- > 0) {
uint32_t w = *__SIMD32(wf)++;
uint32_t i1i2 = *__SIMD32(s1)++;
*dest++ = __SMULBB(i1i2, w) << mag_shift;
*dest++ = 0;
*dest++ = __SMULTT(i1i2, w) << mag_shift;
*dest++ = 0;
}
}
// copy samples from 16bit into 32bit with applying window function
inline static void
window_complex_interleaved_15to31(q15_t *src, size_t length)
{
q31_t *dest = spdisp_fetch_current;
const q15_t *wf = spdisp_wf_current;
spdisp_fetch_current += length;
spdisp_fetch_rest -= length;
spdisp_wf_current += length / 2;
length /= 4;
while (length-- > 0) {
uint32_t w = *__SIMD32(wf)++;
uint32_t i1q1 = *__SIMD32(src)++;
uint32_t i2q2 = *__SIMD32(src)++;
*dest++ = __SMULBB(i1q1, w) << mag_shift;
*dest++ = __SMULTB(i1q1, w) << mag_shift;
*dest++ = __SMULBT(i2q2, w) << mag_shift;
*dest++ = __SMULTT(i2q2, w) << mag_shift;
}
}
inline static void
window_real_interleaved_15to31(q15_t *src, size_t length)
{
//uint32_t offset = 0x08000800;
//uint32_t mask = 0xFFF0FFF0;
//uint16_t adj = spdisp_source[uistat.spdispmode].ibuf == CAPTUREBUFFER0;
q31_t *dest = spdisp_fetch_current;
const q15_t *wf = spdisp_wf_current;
spdisp_fetch_current += length;
spdisp_fetch_rest -= length;
spdisp_wf_current += length / 2;
length /= 4;
while (length-- > 0) {
uint32_t w = *__SIMD32(wf)++;
uint32_t i1q1 = *__SIMD32(src)++;
uint32_t i2q2 = *__SIMD32(src)++;
//if (adj)
//i1i2 = (__QSUB16(i1i2, offset) << 4) & mask;
*dest++ = __SMULBB(i1q1, w) << mag_shift;
*dest++ = 0;
*dest++ = __SMULBT(i2q2, w) << mag_shift;
*dest++ = 0;
}
}
// called from dsp.c
void
disp_fetch_samples(int mode, int type, int16_t *buf0, int16_t *buf1, size_t buflen)
{
if (mode != uistat.spdispmode)
return;
if (spdisp_fetch_rest == 0) {
if (spdispinfo.update_flag & FLAG_SPDISP) {
// currently proccessing in M0APP
return;
}
// start to fetch data
spdisp_fetch_current = SPDISP_BUFFER;
spdisp_fetch_rest = SPDISP_BUFFER_LENGTH;
spdisp_wf_current = winfunc_table;
}
size_t length = spdisp_fetch_rest;
if (type == BT_C_INTERLEAVE || type == BT_R_INTERLEAVE) {
if (buflen > length)
buflen = length;
length = buflen;
} else {
if (buflen > length / 2)
buflen = length / 2;
length = buflen * 2;
}
switch (type) {
case BT_C_INTERLEAVE:
window_complex_interleaved_15to31(buf0, buflen);
break;
case BT_IQ:
window_complex_15to31(buf0, buf1, buflen);
break;
case BT_REAL:
window_real_15to31(buf0, buflen);
break;
case BT_R_INTERLEAVE:
window_complex_interleaved_15to31(buf0, buflen);
break;
}
if (spdisp_fetch_rest == 0) {
// filled up buffer, then analyze and draw waveform
spdispinfo.buffer = SPDISP_BUFFER;
spdispinfo.update_flag |= FLAG_SPDISP;
}
}
// r:2048 c:1024 samples (8192 byte with q31_t)
//#define SPDISP_BUFFER_SIZE 8192
//static q31_t SPDISP_BUFFER[2048];
void
draw_spectrogram(void)
{
q31_t *buf = spdispinfo.buffer;
arm_cfft_radix4_q31(&cfft_inst, buf);
//arm_cmplx_mag_q31(buf, buf, 1024);
// arm_cmplx_mag_squared_q31(buf, buf, 1024);
//draw_samples();
//return;
//uint16_t gainshift = spdispinfo.p.overgain;
uint16_t mode = uistat.spdispmode;
const spectrumdisplay_param_t *param = GET_SPDISP_PARAM(mode);
int i = param->offset;
int16_t stride = param->stride;
int16_t tune_pos = param->origin;
if (uistat.spdispmode == 0)
tune_pos += (int)mode_freq_offset*1024 / (48000 * stride);
uint16_t (*block)[32] = (uint16_t (*)[32])spi_buffer;
int sx, x, y;
for (sx = 0; sx < 320; sx += 32) {
for (x = 0; x < 32; x++) {
uint16_t bg = 0;
if (sx + x == tune_pos)
bg = RGB565(128, 255, 128);
int i0 = i;
int64_t acc = 0;
for (; i < i0 + stride; i++) {
q31_t ii = buf[(i&1023)*2];
q31_t qq = buf[(i&1023)*2+1];
acc += (int64_t)ii*ii + (int64_t)qq*qq;
}
//q31_t mag = acc>>(33-gainshift);
//q31_t mag = buf[i & 1023];
//int v = log2_q31(mag) >> 6;
// format of result of log function is 8.8 format
//int v = (log2_i64(acc) - (36<<8)) >> 6;
int v = (log2_i64(acc) - (36<<8)) / 77; // 1dB/pixel
if (v > 64) v = 64;
if (v < 0) v = 0;
for (y = 0; y < v; y++)
block[63-y][x] = 0xffff;
for ( ; y < 64; y++) {
block[63-y][x] = bg;
if (bg == 0 && y % 10 == 0)
// draw 10dB/ scale on background. 10dB/10pixel
block[63-y][x] = RGB565(15,15,15);
}
//i += stride;
}
ili9341_draw_bitmap(sx, 72, 32, 64, (uint16_t*)block);
}
}
const struct { uint8_t r,g,b; } colormap[] = {
{ 0, 0, 0 },
{ 0, 0, 255 },
{ 0, 255, 0 },
{ 255, 0, 0 },
{ 255, 255, 255 }
};
uint16_t
pick_color(int mag) /* mag: 0 - 63 */
{
int idx = (mag >> 4) & 0x3;
int prop = mag & 0x0f;
int nprop = 0x10 - prop;
int r = colormap[idx].r * nprop + colormap[idx+1].r * prop;
int g = colormap[idx].g * nprop + colormap[idx+1].g * prop;
int b = colormap[idx].b * nprop + colormap[idx+1].b * prop;
return RGB565(r>>4, g>>4, b>>4);
}
void
waterfall_init(void)
{
#if 0
// Vertical Scroll Definition
uint16_t tfa = 152;
uint16_t vsa = 240 - tfa;
uint16_t bfa = 80;
uint8_t vsd[6] = { tfa>>8, tfa, vsa>>8, vsa, bfa>>8, bfa };
send_command(0x33, 6, vsd);
#endif
}
#define YPOS 152
#define HEIGHT 88
#define BLOCK_WIDTH 46
/* 46 * 88 = 4048 pixels < sizeof spi_buffer (4096) */
/* 320 / 46 = 6.96 -> draw block 7 times */
// FS=+-44
// 22-16=6 : +-352
// 22-3-16=3 : +-2816
static inline int
v2ypos(q31_t v)
{
v >>= 24;
v += HEIGHT/2;
if (v < 0) v = 0;
if (v >= HEIGHT) v = HEIGHT-1;
return v;
}
static inline int
inrange(int v0, int v1, int y)
{
if (v0 <= v1) {
return v0 <= y && y <= v1;
} else {
return v1 <= y && y < v0;
}
}
#define FG_SCALE RGB565(15,15,15)
void
draw_waveform(void)
{
q31_t *buf = spdispinfo.buffer;
uint16_t fg = uistat.mode == WFDISP ? FG_ACTIVE : FG_SCALE;
uint16_t bg = BG_NORMAL;
uint16_t c;
int x, y;
int xx;
int w;
int i;
if (uistat.wfdispmode == WATERFALL)
return;
if (uistat.wfdispmode == WAVEFORM_MAG2)
mag_shift = 6;
else if (uistat.wfdispmode == WAVEFORM_MAG)
mag_shift = 3;
else
mag_shift = 0;
int i0 = v2ypos(buf[(512-160)*2-2]);
int q0 = v2ypos(buf[(512-160)*2-1]);
int i1 = v2ypos(buf[(512-160)*2+0]);
int q1 = v2ypos(buf[(512-160)*2+1]);
xx = 0;
for (x = 0; x < 320; ) {
w = BLOCK_WIDTH;
if (w > (320 - x))
w = 320 - x; // adjust last section width
for (i = 0; i < w; i++) {
int i2 = v2ypos(buf[(512-160)*2+2 + x*2]);
int q2 = v2ypos(buf[(512-160)*2+3 + x*2]);
int imin = i1;
int qmin = q1;
int imax = i1;
int qmax = q1;
if (imin > (i0+i1)/2) imin = (i0+i1)/2;
if (imax < (i0+i1)/2) imax = (i0+i1)/2;
if (imin > (i1+i2)/2) imin = (i1+i2)/2;
if (imax < (i1+i2)/2) imax = (i1+i2)/2;
if (qmin > (q0+q1)/2) qmin = (q0+q1)/2;
if (qmax < (q0+q1)/2) qmax = (q0+q1)/2;
if (qmin > (q1+q2)/2) qmin = (q1+q2)/2;
if (qmax < (q1+q2)/2) qmax = (q1+q2)/2;
for (y = 0; y < HEIGHT; y++) {
c = bg;
// draw origin line
if (y == HEIGHT/2)
c = fg;
// draw 1ms tick
if (x % 48 == 0)
c = fg;
if (y == i1 || (imin < y && y <= imax))
c |= RGB565(255, 255, 0);
if (y == q1 || (qmin < y && y <= qmax))
c |= RGB565(255, 0, 255);
spi_buffer[y * w + i] = c;
}
i0 = i1;
q0 = q1;
i1 = i2;
q1 = q2;
x++;
}
ili9341_draw_bitmap(xx, 152, w, HEIGHT, spi_buffer);
xx += i;
}
}
static int16_t vsa = 152;
void
draw_waterfall(void)
{
int x;
q31_t *buf = spdispinfo.buffer;
uint16_t mode = uistat.spdispmode;
const spectrumdisplay_param_t *param = GET_SPDISP_PARAM(mode);
if (uistat.fs == 192)
param = &spdispparam_tbl_192khz[mode];
uint16_t *block = spi_buffer;
int i = param->offset;
int stride = param->stride;
uint16_t bg = uistat.mode == WFDISP ? BG_ACTIVE : BG_NORMAL;
uint16_t c;
if (uistat.wfdispmode != WATERFALL)
return;
for (x = 0; x < 320; x++) {
int64_t acc = 0;
int i0 = i;
for (; i < i0 + stride; i++) {
q31_t ii = buf[(i&1023)*2];