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audio-reactive-led-strip/ws2812_gamma.cpp

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2017-12-18 21:41:27 +01:00
// ws2812_gamma.cpp
//
// dithering tables with gamma correction
#include <stdint.h>
#include "ws2812_gamma.h"
static const uint8_t gamma0[] = {
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4,
5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9,
10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16,
17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 23, 23, 24, 24, 25,
26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 32, 33, 34, 34, 35, 36,
37, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49,
50, 51, 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, 80, 81,
82, 83, 84, 85, 86, 88, 89, 90, 91, 92, 94, 95, 96, 97, 98, 100,
101, 102, 103, 105, 106, 107, 109, 110, 111, 113, 114, 115, 117, 118, 119, 121,
122, 123, 125, 126, 128, 129, 130, 132, 133, 135, 136, 138, 139, 141, 142, 144,
145, 147, 148, 150, 151, 153, 154, 156, 157, 159, 161, 162, 164, 165, 167, 169,
170, 172, 173, 175, 177, 178, 180, 182, 183, 185, 187, 189, 190, 192, 194, 196,
197, 199, 201, 203, 204, 206, 208, 210, 212, 213, 215, 217, 219, 221, 223, 225,
226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250, 252, 254, 255 };
static const uint8_t gamma1[] = {
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, 2, 3, 3, 3, 3, 4, 4,
4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9,
9, 9, 10, 10, 11, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16,
16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 23, 23, 24, 24,
25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 32, 33, 34, 35, 35,
36, 37, 38, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80,
81, 82, 84, 85, 86, 87, 88, 89, 91, 92, 93, 94, 95, 97, 98, 99,
100, 102, 103, 104, 105, 107, 108, 109, 111, 112, 113, 115, 116, 117, 119, 120,
121, 123, 124, 126, 127, 128, 130, 131, 133, 134, 136, 137, 139, 140, 142, 143,
145, 146, 148, 149, 151, 152, 154, 155, 157, 158, 160, 162, 163, 165, 166, 168,
170, 171, 173, 175, 176, 178, 180, 181, 183, 185, 186, 188, 190, 192, 193, 195,
197, 199, 200, 202, 204, 206, 207, 209, 211, 213, 215, 217, 218, 220, 222, 224,
226, 228, 230, 232, 233, 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma2[] = {
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4,
4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9,
9, 10, 10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16,
16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 24, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 33, 34, 35, 36,
36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 48, 49,
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,
82, 83, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 96, 97, 98, 99,
101, 102, 103, 104, 106, 107, 108, 110, 111, 112, 114, 115, 116, 118, 119, 120,
122, 123, 125, 126, 127, 129, 130, 132, 133, 134, 136, 137, 139, 140, 142, 143,
145, 146, 148, 149, 151, 152, 154, 156, 157, 159, 160, 162, 163, 165, 167, 168,
170, 172, 173, 175, 177, 178, 180, 182, 183, 185, 187, 188, 190, 192, 194, 195,
197, 199, 201, 202, 204, 206, 208, 210, 211, 213, 215, 217, 219, 221, 222, 224,
226, 228, 230, 232, 234, 236, 238, 240, 241, 243, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma3[] = {
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, 3, 4,
4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8,
9, 9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 15, 15,
16, 16, 17, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24,
25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 34, 35,
36, 37, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 45, 46, 47, 48,
49, 50, 51, 52, 53, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80,
81, 82, 83, 84, 86, 87, 88, 89, 90, 92, 93, 94, 95, 96, 98, 99,
100, 101, 103, 104, 105, 107, 108, 109, 110, 112, 113, 114, 116, 117, 118, 120,
121, 123, 124, 125, 127, 128, 130, 131, 133, 134, 135, 137, 138, 140, 141, 143,
144, 146, 147, 149, 150, 152, 153, 155, 157, 158, 160, 161, 163, 165, 166, 168,
169, 171, 173, 174, 176, 178, 179, 181, 183, 184, 186, 188, 190, 191, 193, 195,
197, 198, 200, 202, 204, 205, 207, 209, 211, 213, 214, 216, 218, 220, 222, 224,
226, 228, 229, 231, 233, 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma4[] = {
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4,
4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9,
9, 10, 10, 11, 11, 11, 12, 12, 13, 13, 14, 14, 14, 15, 15, 16,
16, 17, 17, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 36,
37, 37, 38, 39, 40, 40, 41, 42, 43, 44, 44, 45, 46, 47, 48, 49,
50, 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, 81,
82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 95, 96, 97, 98, 100,
101, 102, 103, 105, 106, 107, 108, 110, 111, 112, 114, 115, 116, 118, 119, 120,
122, 123, 125, 126, 127, 129, 130, 132, 133, 135, 136, 138, 139, 140, 142, 143,
145, 146, 148, 149, 151, 153, 154, 156, 157, 159, 160, 162, 164, 165, 167, 168,
170, 172, 173, 175, 177, 178, 180, 182, 183, 185, 187, 188, 190, 192, 194, 195,
197, 199, 201, 202, 204, 206, 208, 210, 211, 213, 215, 217, 219, 221, 223, 224,
226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma5[] = {
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, 3, 3, 4,
4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 9,
9, 9, 10, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 14, 15, 15,
16, 16, 17, 17, 18, 19, 19, 20, 20, 21, 21, 22, 23, 23, 24, 24,
25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 32, 33, 34, 35, 35,
36, 37, 38, 38, 39, 40, 41, 41, 42, 43, 44, 45, 46, 46, 47, 48,
49, 50, 51, 52, 53, 54, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 79, 80,
81, 82, 83, 85, 86, 87, 88, 89, 90, 92, 93, 94, 95, 97, 98, 99,
100, 102, 103, 104, 105, 107, 108, 109, 111, 112, 113, 115, 116, 117, 119, 120,
121, 123, 124, 126, 127, 128, 130, 131, 133, 134, 136, 137, 138, 140, 141, 143,
144, 146, 147, 149, 151, 152, 154, 155, 157, 158, 160, 161, 163, 165, 166, 168,
170, 171, 173, 174, 176, 178, 179, 181, 183, 185, 186, 188, 190, 191, 193, 195,
197, 198, 200, 202, 204, 206, 207, 209, 211, 213, 215, 216, 218, 220, 222, 224,
226, 228, 230, 231, 233, 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma6[] = {
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, 3, 3, 3, 3, 3, 4, 4,
4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9,
9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 15, 15, 16,
16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 22, 22, 23, 23, 24, 25,
25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 33, 33, 34, 35, 36,
36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 48, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80,
81, 83, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 96, 97, 98, 99,
101, 102, 103, 104, 106, 107, 108, 109, 111, 112, 113, 115, 116, 117, 119, 120,
122, 123, 124, 126, 127, 129, 130, 131, 133, 134, 136, 137, 139, 140, 142, 143,
145, 146, 148, 149, 151, 152, 154, 155, 157, 159, 160, 162, 163, 165, 167, 168,
170, 171, 173, 175, 176, 178, 180, 181, 183, 185, 186, 188, 190, 192, 193, 195,
197, 199, 200, 202, 204, 206, 208, 209, 211, 213, 215, 217, 219, 220, 222, 224,
226, 228, 230, 232, 234, 236, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255 };
static const uint8_t gamma7[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8,
9, 9, 9, 10, 10, 11, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15,
16, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24,
25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35,
36, 37, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45, 45, 46, 47, 48,
49, 50, 51, 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, 78, 79, 80,
81, 82, 83, 84, 86, 87, 88, 89, 90, 91, 93, 94, 95, 96, 98, 99,
100, 101, 103, 104, 105, 106, 108, 109, 110, 112, 113, 114, 116, 117, 118, 120,
121, 122, 124, 125, 127, 128, 130, 131, 132, 134, 135, 137, 138, 140, 141, 143,
144, 146, 147, 149, 150, 152, 153, 155, 156, 158, 160, 161, 163, 164, 166, 168,
169, 171, 173, 174, 176, 178, 179, 181, 183, 184, 186, 188, 189, 191, 193, 195,
196, 198, 200, 202, 203, 205, 207, 209, 211, 213, 214, 216, 218, 220, 222, 224,
226, 227, 229, 231, 233, 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255 };
#if WS2812_DITHER_NUM == 1
const uint8_t *gamma_dither[WS2812_DITHER_NUM] = {gamma0};
#elif WS2812_DITHER_NUM == 2
const uint8_t *gamma_dither[WS2812_DITHER_NUM] = {gamma0,gamma1};
#elif WS2812_DITHER_NUM == 4
const uint8_t *gamma_dither[WS2812_DITHER_NUM] = {gamma0,gamma1,gamma2,gamma3};
#elif WS2812_DITHER_NUM == 8
const uint8_t *gamma_dither[WS2812_DITHER_NUM] = {gamma0,gamma1,gamma2,gamma3,gamma4,gamma5,gamma6,gamma7};
#else
#error Invalid WS2812_DITHER_NUM value. Allowed values are 1, 2, 4, 8
#endif
// end of file
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