buildWave8ByteExpansionLUT() [2/2]

void fl::buildWave8ByteExpansionLUT	(	const Wave8BitExpansionLut &	nibble,
		Wave8ByteExpansionLut &	out )

Out-param overload: fill an existing 2 KB LUT in place.

Prefer this on embedded targets — the by-value overload materialises a 2 KB temporary on the caller's stack (FastLED#3569 stack-canary panic on classic ESP32's 8 KB loop task).

Definition at line 314 of file wave8.cpp.hpp.

                                                                         {
    for (int b = 0; b < 256; ++b) {
        const Wave8Bit *hi = nibble.lut[(b >> 4) & 0xF];
        const Wave8Bit *lo = nibble.lut[b & 0xF];
        for (int i = 0; i < 4; ++i) {
            out.lut[b].symbols[i] = hi[i];
            out.lut[b].symbols[i + 4] = lo[i];
        }
    }
}

References FL_NO_EXCEPT.

Referenced by buildWave8ByteExpansionLUT().

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