encodeLPD6803()

template<typename InputIterator, typename OutputIterator>

void fl::encodeLPD6803	(	InputIterator	first,
		InputIterator	last,
		OutputIterator	out )

Encode pixel data in LPD6803 format.

Template Parameters

InputIterator	Iterator yielding fl::array<u8, 3> (3 bytes in wire order)
OutputIterator	Output iterator accepting uint8_t

Parameters

first	Iterator to first pixel
last	Iterator past last pixel
out	Output iterator for encoded bytes

Note

LPD6803 uses RGB wire order: pixel[0]=Red, pixel[1]=Green, pixel[2]=Blue

Definition at line 35 of file lpd6803.h.

                                                                                            {
    // Start boundary: 4 bytes of 0x00
    *out++ = 0x00;
    *out++ = 0x00;
    *out++ = 0x00;
    *out++ = 0x00;
 
    // LED data: 16-bit format (1bbbbbgggggrrrrr, count as we go)
    size_t num_leds = 0;
    while (first != last) {
        const fl::array<u8, BYTES_PER_PIXEL_RGB>& pixel = *first;
 
        // RGB order: 0=R, 1=G, 2=B
        u16 command = lpd6803EncodeRGB(pixel[0], pixel[1], pixel[2]);
 
        *out++ = static_cast<u8>(command >> 8);   // MSB
        *out++ = static_cast<u8>(command & 0xFF); // LSB
 
        ++first;
        ++num_leds;
    }
 
    // End boundary: (num_leds / 32) DWords of 0xFF000000
    size_t end_dwords = (num_leds / 32);
    for (size_t i = 0; i < end_dwords; i++) {
        *out++ = 0xFF;
        *out++ = 0x00;
        *out++ = 0x00;
        *out++ = 0x00;
    }
}

References FL_NOEXCEPT, and lpd6803EncodeRGB().

Referenced by fl::PixelIterator::writeLPD6803().

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