encodeTM1812_RGBWW()

template<typename InputIterator, typename OutputIterator>

void fl::encodeTM1812_RGBWW	(	InputIterator	first,
		InputIterator	last,
		OutputIterator	out )

Pack 5-channel RGBCCT pixels into TM1812 12-channel frames.

The TM1812 consumes four RGB groups (12 bytes / 96 bits) per IC. RGBCCT strips reported in issue #995 wire two logical 5-channel pixels to the first ten outputs and leave the final two outputs unused. Consequently, each IC frame is pixel 0 (5) + pixel 1 (5) + zero padding (2).

An odd final logical pixel is followed by five zero bytes for the absent second pixel, then the normal two padding bytes. This preserves the 96-bit boundary so downstream TM1812 chips stay aligned.

Definition at line 24 of file tm1812.h.

                                                         {
    while (first != last) {
        const fl::array<u8, BYTES_PER_PIXEL_RGBWW>& firstPixel = *first;
        for (u8 byte : firstPixel) {
            *out++ = byte;
        }
        ++first;
 
        if (first != last) {
            const fl::array<u8, BYTES_PER_PIXEL_RGBWW>& secondPixel = *first;
            for (u8 byte : secondPixel) {
                *out++ = byte;
            }
            ++first;
        } else {
            for (u8 i = 0; i < BYTES_PER_PIXEL_RGBWW; ++i) {
                *out++ = 0;
            }
        }
 
        *out++ = 0;
        *out++ = 0;
    }
}

References BYTES_PER_PIXEL_RGBWW, and FL_NO_EXCEPT.

Referenced by fl::PixelIterator::writeTM1812RGBWW().

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