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/// @file crgb.hpp

/// Defines utility functions for the red, green, and blue (RGB) pixel struct

#pragma once

#include "fl/stl/stdint.h"

#include "chsv.h"

#include "crgb.h"

#include "lib8tion.h"

#include "fl/stl/compiler_control.h"

#include "fl/math/scale8.h"

// Define namespace-aware scale8 macro

#define FUNCTION_SCALE8(a,b) fl::scale8(a,b)

FL_DISABLE_WARNING_PUSH

FL_DISABLE_WARNING_UNUSED_PARAMETER

FL_DISABLE_WARNING_RETURN_TYPE

FL_DISABLE_WARNING_IMPLICIT_INT_CONVERSION

FL_DISABLE_WARNING_FLOAT_CONVERSION

FL_DISABLE_WARNING_SIGN_CONVERSION

FASTLED_FORCE_INLINE CRGB& CRGB::addToRGB (fl::u8 d ) FL_NO_EXCEPT

{

r = fl::qadd8( r, d);

g = fl::qadd8( g, d);

b = fl::qadd8( b, d);

return *this;

}

FASTLED_FORCE_INLINE CRGB& CRGB::operator-= (const CRGB& rhs ) FL_NO_EXCEPT

{

r = fl::qsub8( r, rhs.r);

g = fl::qsub8( g, rhs.g);

b = fl::qsub8( b, rhs.b);

return *this;

}

/// Add a constant of '1' from each channel, saturating at 0xFF

FASTLED_FORCE_INLINE CRGB& CRGB::operator++ () FL_NO_EXCEPT

{

addToRGB(1);

return *this;

}

/// @copydoc operator++

FASTLED_FORCE_INLINE CRGB CRGB::operator++ (int ) FL_NO_EXCEPT

{

CRGB retval(*this);

++(*this);

return retval;

}

FASTLED_FORCE_INLINE CRGB& CRGB::subtractFromRGB(fl::u8 d) FL_NO_EXCEPT

{

r = fl::qsub8( r, d);

g = fl::qsub8( g, d);

b = fl::qsub8( b, d);

return *this;

}

FASTLED_FORCE_INLINE CRGB& CRGB::operator*= (fl::u8 d ) FL_NO_EXCEPT

{

r = fl::qmul8( r, d);

g = fl::qmul8( g, d);

b = fl::qmul8( b, d);

return *this;

}

FASTLED_FORCE_INLINE CRGB& CRGB::nscale8_video(fl::u8 scaledown ) FL_NO_EXCEPT

{

nscale8x3_video( r, g, b, scaledown);

return *this;

}

FASTLED_FORCE_INLINE CRGB& CRGB::operator%= (fl::u8 scaledown ) FL_NO_EXCEPT

{

nscale8x3_video( r, g, b, scaledown);

return *this;

}

FASTLED_FORCE_INLINE CRGB& CRGB::fadeLightBy (fl::u8 fadefactor ) FL_NO_EXCEPT

{

nscale8x3_video( r, g, b, 255 - fadefactor);

return *this;

}

/// Subtract a constant of '1' from each channel, saturating at 0x00

FASTLED_FORCE_INLINE CRGB& CRGB::operator-- () FL_NO_EXCEPT

{

subtractFromRGB(1);

return *this;

}

/// @copydoc operator--

FASTLED_FORCE_INLINE CRGB CRGB::operator-- (int ) FL_NO_EXCEPT

{

CRGB retval(*this);

--(*this);

return retval;

}

constexpr CRGB CRGB::nscale8_constexpr(const CRGB scaledown) const FL_NO_EXCEPT

{

return CRGB(

(((fl::u16)r) * (1 + (fl::u16)(scaledown.r))) >> 8,

(((fl::u16)g) * (1 + (fl::u16)(scaledown.g))) >> 8,

(((fl::u16)b) * (1 + (fl::u16)(scaledown.b))) >> 8

);

}

FASTLED_FORCE_INLINE CRGB& CRGB::nscale8 (const CRGB & scaledown ) FL_NO_EXCEPT

{

r = FUNCTION_SCALE8(r, scaledown.r);

g = FUNCTION_SCALE8(g, scaledown.g);

b = FUNCTION_SCALE8(b, scaledown.b);

return *this;

}

FASTLED_FORCE_INLINE CRGB CRGB::scale8 (fl::u8 scaledown ) const FL_NO_EXCEPT

{

CRGB out = *this;

fl::nscale8x3( out.r, out.g, out.b, scaledown);

return out;

}

FASTLED_FORCE_INLINE CRGB CRGB::scale8 (const CRGB & scaledown ) const FL_NO_EXCEPT

{

CRGB out;

out.r = FUNCTION_SCALE8(r, scaledown.r);

out.g = FUNCTION_SCALE8(g, scaledown.g);

out.b = FUNCTION_SCALE8(b, scaledown.b);

return out;

}

FASTLED_FORCE_INLINE fl::u8 CRGB::getLuma( ) const FL_NO_EXCEPT {

//Y' = 0.2126 R' + 0.7152 G' + 0.0722 B'

// 54 183 18 (!)

fl::u8 luma = scale8_LEAVING_R1_DIRTY( r, 54) + \

scale8_LEAVING_R1_DIRTY( g, 183) + \

scale8_LEAVING_R1_DIRTY( b, 18);

cleanup_R1();

return luma;

}

FASTLED_FORCE_INLINE fl::u8 CRGB::getAverageLight( ) const FL_NO_EXCEPT {

#if FASTLED_SCALE8_FIXED == 1

const fl::u8 eightyfive = 85;

#else

const fl::u8 eightyfive = 86;

#endif

fl::u8 avg = scale8_LEAVING_R1_DIRTY( r, eightyfive) + \

scale8_LEAVING_R1_DIRTY( g, eightyfive) + \

scale8_LEAVING_R1_DIRTY( b, eightyfive);

cleanup_R1();

return avg;

}

FASTLED_FORCE_INLINE CRGB CRGB::lerp16( const CRGB& other, fract16 frac) const FL_NO_EXCEPT

{

CRGB ret;

ret.r = lerp16by16(r<<8,other.r<<8,frac)>>8;

ret.g = lerp16by16(g<<8,other.g<<8,frac)>>8;

ret.b = lerp16by16(b<<8,other.b<<8,frac)>>8;

return ret;

}

namespace fl {

/// @copydoc CRGB::operator+=

FASTLED_FORCE_INLINE CRGB operator+( const CRGB& p1, const CRGB& p2) FL_NO_EXCEPT

{

return CRGB( fl::qadd8( p1.r, p2.r),

fl::qadd8( p1.g, p2.g),

fl::qadd8( p1.b, p2.b));

}

/// @copydoc CRGB::operator-=

FASTLED_FORCE_INLINE CRGB operator-( const CRGB& p1, const CRGB& p2) FL_NO_EXCEPT

{

return CRGB( fl::qsub8( p1.r, p2.r),

fl::qsub8( p1.g, p2.g),

fl::qsub8( p1.b, p2.b));

}

/// @copydoc CRGB::operator*=

FASTLED_FORCE_INLINE CRGB operator*( const CRGB& p1, u8 d) FL_NO_EXCEPT

{

return CRGB( qmul8( p1.r, d),

qmul8( p1.g, d),

qmul8( p1.b, d));

}

/// Scale using CRGB::nscale8_video()

FASTLED_FORCE_INLINE CRGB operator%( const CRGB& p1, u8 d) FL_NO_EXCEPT

{

CRGB retval( p1);

retval.nscale8_video( d);

return retval;

}

} // namespace fl

#undef FUNCTION_SCALE8

FL_DISABLE_WARNING_POP

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