API: moved functions to files to make it easier to import to other projects

src/utils.c

@@ -0,0 +1,23 @@
+#include "utils.h"
+
+unsigned long
+u32to_u64(const unsigned int clr)
+{
+	unsigned long mask = 0;
+	unsigned long alpha = DECODE_A(clr);
+	unsigned long red = DECODE_R(clr);
+	unsigned long green = DECODE_G(clr);
+	unsigned long blue = DECODE_B(clr);
+	return (alpha << 48) | (red << 32) | (green << 16) | (blue);
+}
+
+unsigned int
+u64to_u32(const unsigned long clr, const unsigned long u64_div)
+{
+	unsigned int a = ((clr >> 48) & LONG_BYTE);
+	unsigned int r = ((clr >> 32) & LONG_BYTE);
+	unsigned int g = ((clr >> 16) & LONG_BYTE);
+	unsigned int b = (clr & LONG_BYTE);
+	return ENCODE_ARGB((a / u64_div), (r / u64_div), (g / u64_div),
+			   (b / u64_div));
+}