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Add XYZ table generator
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7243e808e9
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28
util/xyztab.c
Normal file
28
util/xyztab.c
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <math.h>
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int main(int argc, char **argv)
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{
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printf("#include <stdint.h>\n");
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printf("const float xyz_table[256] = {\n ");
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for (int i=0; i<256; i++) {
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float t = i/255.0f;
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if (t > 0.04045f) {
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t = powf(((t+0.055f) / 1.055f), 2.4f);
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} else {
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t/= 12.92f;
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}
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t*=100.0f;
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printf("%.6ff, ", t);
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if (i==255) {
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printf("\n");
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} else if ((i+1)%8==0) {
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printf("\n ");
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}
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}
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printf("};\n");
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return 0;
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}
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