wave8_transpose_8_bf1()

FASTLED_FORCE_INLINE FL_IRAM FL_OPTIMIZE_FUNCTION void fl::detail::wave8_transpose_8_bf1	(	const u8	lanes[8],
		u8	W0,
		u8	W1,
		u8	output[8 *sizeof(Wave8Byte)] )

BF1 for 8-lane Wave8 — same algebraic identity as 16-lane BF1.

Output: 8 symbols × 8 pulses × 1 byte = 64 bytes. Each pulse byte carries 8 lanes' bits at the corresponding pulse position. Uses spread_transpose8_symbol to compute the bit transpose in one call.

Definition at line 345 of file wave8.hpp.

                                                             {
    u8 d_mask[8];
    u8 m0_mask[8];
    const u8 D_byte = W0 ^ W1;
    for (int p = 0; p < 8; ++p) {
        const int shift = 7 - p;
        d_mask[p] = ((D_byte >> shift) & 1) ? 0xFFu : 0x00u;
        m0_mask[p] = ((W0 >> shift) & 1) ? 0xFFu : 0x00u;
    }
    u8 cols[8];
    spread_transpose8_symbol(lanes, cols);
    for (int s = 0; s < 8; ++s) {
        const u8 col = cols[s];
        for (int p = 0; p < 8; ++p) {
            output[s * 8 + p] = m0_mask[p] ^ (col & d_mask[p]);
        }
    }
}

References spread_transpose8_symbol(), fl::W0, and fl::W1.

Referenced by fl::wave8Transpose_8_bf1().

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