Initial public release of SystemK.

NeoPixels/Gamma.c

@@ -0,0 +1,44 @@
+
+/*
+ * This program source code file is part of SystemK, a library in the KTag project.
+ *
+ * 🛡️ <https://ktag.clubk.club> 🃞
+ *
+ * Copyright © 2016-2025 Joseph P. Kearney and the KTag developers.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+ * details.
+ *
+ * There should be a copy of the GNU Affero General Public License in the LICENSE
+ * file in the root of this repository.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+#include "Gamma.h"
+
+// https://learn.adafruit.com/led-tricks-gamma-correction/the-quick-fix
+
+const uint_fast8_t Gamma8[] = {
+  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,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,
+  2,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  5,  5,  5,
+  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  9,  9,  9, 10,
+ 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
+ 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
+ 25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
+ 37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
+ 51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
+ 69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
+ 90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
+115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
+144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
+177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
+215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };