writeLPD6803Wide()

template<typename OutputIterator>

void fl::PixelIterator::writeLPD6803Wide ( OutputIterator back_ins )

inline

LPD6803 over a colour-managed channel's 16-bit drives, quantized once to the chip's 5 bits per channel (B3).

Same framing as encodeLPD6803: four zero bytes, 1rrrrrgggggbbbbb per LED in wire order, then n / 32 dwords of FF 00 00 00.

Definition at line 605 of file pixel_iterator.h.

                                                                {
        for (int i = 0; i < 4; ++i) {
            *back_ins++ = 0x00;
        }
        fl::size num_leds = 0;
        while (has(1)) {
            u16 w[3];
            loadAndScaleRGB16(&w[0], &w[1], &w[2]);  // wire order
            u16 command = 0x8000;
            for (int c = 0; c < 3; ++c) {
                const u32 code = (static_cast<u32>(w[c]) * 31u + 32767u) / 65535u;
                command = static_cast<u16>(command | (code << (10 - 5 * c)));
            }
            *back_ins++ = static_cast<u8>(command >> 8);
            *back_ins++ = static_cast<u8>(command & 0xFF);
            stepDithering();
            advanceData();
            ++num_leds;
        }
        const fl::size end_dwords = num_leds / 32;
        for (fl::size i = 0; i < end_dwords; ++i) {
            *back_ins++ = 0xFF;
            *back_ins++ = 0x00;
            *back_ins++ = 0x00;
            *back_ins++ = 0x00;
        }
    }

References advanceData(), fl::FL_NO_EXCEPT, has(), loadAndScaleRGB16(), and stepDithering().

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