wave3_transpose_4()

FASTLED_FORCE_INLINE FL_IRAM FL_OPTIMIZE_FUNCTION void fl::detail::wave3_transpose_4	(	const Wave3Byte	lane_waves[4],
		u8	output[4 *sizeof(Wave3Byte)] )

Transpose 4 lanes of Wave3Byte data into interleaved format.

Parameters

lane_waves	Array of 4 Wave3Byte structures
output	Output buffer (12 bytes = 4 * 3)

Definition at line 84 of file wave3.hpp.

                                                         {
    for (int symbol_idx = 0; symbol_idx < 3; symbol_idx++) {
        u8 l0 = lane_waves[0].data[symbol_idx];
        u8 l1 = lane_waves[1].data[symbol_idx];
        u8 l2 = lane_waves[2].data[symbol_idx];
        u8 l3 = lane_waves[3].data[symbol_idx];
 
        // 4 output bytes per symbol (2 pulses per byte × 4 lanes)
        // Same bit layout as wave8_transpose_4
        output[symbol_idx * 4 + 0] =
            ((l3 >> 7) & 1) << 7 |
            ((l2 >> 7) & 1) << 6 |
            ((l1 >> 7) & 1) << 5 |
            ((l0 >> 7) & 1) << 4 |
            ((l3 >> 6) & 1) << 3 |
            ((l2 >> 6) & 1) << 2 |
            ((l1 >> 6) & 1) << 1 |
            ((l0 >> 6) & 1);
 
        output[symbol_idx * 4 + 1] =
            ((l3 >> 5) & 1) << 7 |
            ((l2 >> 5) & 1) << 6 |
            ((l1 >> 5) & 1) << 5 |
            ((l0 >> 5) & 1) << 4 |
            ((l3 >> 4) & 1) << 3 |
            ((l2 >> 4) & 1) << 2 |
            ((l1 >> 4) & 1) << 1 |
            ((l0 >> 4) & 1);
 
        output[symbol_idx * 4 + 2] =
            ((l3 >> 3) & 1) << 7 |
            ((l2 >> 3) & 1) << 6 |
            ((l1 >> 3) & 1) << 5 |
            ((l0 >> 3) & 1) << 4 |
            ((l3 >> 2) & 1) << 3 |
            ((l2 >> 2) & 1) << 2 |
            ((l1 >> 2) & 1) << 1 |
            ((l0 >> 2) & 1);
 
        output[symbol_idx * 4 + 3] =
            ((l3 >> 1) & 1) << 7 |
            ((l2 >> 1) & 1) << 6 |
            ((l1 >> 1) & 1) << 5 |
            ((l0 >> 1) & 1) << 4 |
            ((l3 >> 0) & 1) << 3 |
            ((l2 >> 0) & 1) << 2 |
            ((l1 >> 0) & 1) << 1 |
            ((l0 >> 0) & 1);
    }
}

References fl::Wave3Byte::data.

Referenced by fl::wave3Transpose_4().

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