forked from Makuna/NeoPixelBus
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
/*-------------------------------------------------------------------------
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DotStarX4WordFeature provides feature base class to describe color order for
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3 color but 4 byte features when used with DotStars
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Written by Michael C. Miller.
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I invest time and resources providing this open source code,
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please support me by donating (see https://github.com/Makuna/NeoPixelBus)
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-------------------------------------------------------------------------
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This file is part of the Makuna/NeoPixelBus library.
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NeoPixelBus is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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NeoPixelBus is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with NeoPixel. If not, see
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<http://www.gnu.org/licenses/>.
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-------------------------------------------------------------------------*/
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#pragma once
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template <uint8_t V_IC_1, uint8_t V_IC_2, uint8_t V_IC_3>
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class DotStarX4WordFeature :
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public NeoWordElements<8, Rgb48Color, uint32_t>
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{
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public:
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static void applyPixelColor(uint8_t* pPixels, uint16_t indexPixel, ColorObject color)
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{
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uint8_t* p = getPixelAddress(pPixels, indexPixel);
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*p++ = 0xff; // upper bit is always 1 and three 5 bit brightness at max
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*p++ = 0xff; // {1}{5}{5}{5}
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// due to endianness the byte order must be copied to output
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*p++ = color[V_IC_1] >> 8;
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*p++ = color[V_IC_1] & 0xff;
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*p++ = color[V_IC_2] >> 8;
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*p++ = color[V_IC_2] & 0xff;
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*p++ = color[V_IC_3] >> 8;
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*p = color[V_IC_3] & 0xff;
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}
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static ColorObject retrievePixelColor(const uint8_t* pPixels, uint16_t indexPixel)
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{
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ColorObject color;
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const uint8_t* p = getPixelAddress(pPixels, indexPixel);
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p++; // ignore the first two bytes
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p++;
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// due to endianness the byte order must be copied to output
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color[V_IC_1] = (static_cast<uint16_t>(*p++) << 8);
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color[V_IC_1] |= *p++;
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color[V_IC_2] = (static_cast<uint16_t>(*p++) << 8);
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color[V_IC_2] |= *p++;
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color[V_IC_3] = (static_cast<uint16_t>(*p++) << 8);
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color[V_IC_3] |= *p;
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return color;
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}
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static ColorObject retrievePixelColor_P(PGM_VOID_P pPixels, uint16_t indexPixel)
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{
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ColorObject color;
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const uint16_t* p = reinterpret_cast<const uint16_t*>(getPixelAddress(reinterpret_cast<const uint8_t*>(pPixels), indexPixel));
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// PROGMEM unit of storage expected to be the same size as color element
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// so no endianness issues to worry about
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p++; // ignore the first word
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color[V_IC_1] = pgm_read_word(p++);
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color[V_IC_2] = pgm_read_word(p++);
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color[V_IC_3] = pgm_read_word(p);
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return color;
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}
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};
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