NeoPixelBus/src/internal/features/Neo3ByteFeature.h

/*-------------------------------------------------------------------------
Neo3ByteFeature provides feature base class to describe color order for
  3 byte features

Written by Michael C. Miller.

I invest time and resources providing this open source code,
please support me by donating (see https://github.com/Makuna/NeoPixelBus)

-------------------------------------------------------------------------
This file is part of the Makuna/NeoPixelBus library.

NeoPixelBus is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.

NeoPixelBus is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with NeoPixel.  If not, see
<http://www.gnu.org/licenses/>.
-------------------------------------------------------------------------*/
#pragma once

template <uint8_t V_IC_1, uint8_t V_IC_2, uint8_t V_IC_3>
class Neo3ByteFeature :
    public NeoByteElements<3, RgbColor, uint8_t>
{
public:
    static void applyPixelColor(uint8_t* pPixels, uint16_t indexPixel, ColorObject color)
    {
        uint8_t* p = getPixelAddress(pPixels, indexPixel);

        *p++ = color[V_IC_1];
        *p++ = color[V_IC_2];
        *p = color[V_IC_3];
    }

    static ColorObject retrievePixelColor(const uint8_t* pPixels, uint16_t indexPixel)
    {
        ColorObject color;
        const uint8_t* p = getPixelAddress(pPixels, indexPixel);

        color[V_IC_1] = *p++;
        color[V_IC_2] = *p++;
        color[V_IC_3] = *p;

        return color;
    }


    static ColorObject retrievePixelColor_P(PGM_VOID_P pPixels, uint16_t indexPixel)
    {
        ColorObject color;
        const uint8_t* p = getPixelAddress(reinterpret_cast<const uint8_t*>(pPixels), indexPixel);

        color[V_IC_1] = pgm_read_byte(p++);
        color[V_IC_2] = pgm_read_byte(p++);
        color[V_IC_3] = pgm_read_byte(p);

        return color;
    }
};