hyperion.ng/libsrc/utils/ColorSys.cpp
LordGrey 25d79a9f3f
Qt6 support (#1363)
* Initial Qt6 config

* Change Package order to reingfence missing packages

* Update to QT 6.2.0

* Qt 6.2.0 updates

* macOS fix

* Simplify handling QT5 & Qt6 in parallel

* Updates for Windows

* Fix macos build

* macOS linker fix

* General support of QTDIR, update docu

* MaxOS add default qt directories

* Fix merge typo

* Update default CMakeSettings.json with installation path options

* Add additional libs required by Qt6 to CompileHowTo

* Fix Qt5 items

Co-authored-by: Paulchen-Panther <16664240+Paulchen-Panther@users.noreply.github.com>
2021-11-16 18:12:56 +01:00

59 lines
1.6 KiB
C++

#include <utils/ColorSys.h>
#include <QColor>
inline uint8_t clamp(int x)
{
return (x<0) ? 0 : ((x>255) ? 255 : uint8_t(x));
}
void ColorSys::rgb2hsl(uint8_t red, uint8_t green, uint8_t blue, uint16_t & hue, float & saturation, float & luminance)
{
QColor color(red,green,blue);
#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
float h, s, l;
#else
qreal h, s, l;
#endif
color.getHslF(&h,&s,&l);
hue = h;
saturation = s;
luminance = l;
}
void ColorSys::hsl2rgb(uint16_t hue, float saturation, float luminance, uint8_t & red, uint8_t & green, uint8_t & blue)
{
QColor color(QColor::fromHslF(hue,(qreal)saturation,(qreal)luminance));
red = (uint8_t)color.red();
green = (uint8_t)color.green();
blue = (uint8_t)color.blue();
}
void ColorSys::rgb2hsv(uint8_t red, uint8_t green, uint8_t blue, uint16_t & hue, uint8_t & saturation, uint8_t & value)
{
QColor color(red,green,blue);
hue = color.hsvHue();
saturation = color.hsvSaturation();
value = color.value();
}
void ColorSys::hsv2rgb(uint16_t hue, uint8_t saturation, uint8_t value, uint8_t & red, uint8_t & green, uint8_t & blue)
{
QColor color(QColor::fromHsv(hue,saturation,value));
red = (uint8_t)color.red();
green = (uint8_t)color.green();
blue = (uint8_t)color.blue();
}
void ColorSys::yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t &r, uint8_t &g, uint8_t &b)
{
// see: http://en.wikipedia.org/wiki/YUV#Y.27UV444_to_RGB888_conversion
int c = y - 16;
int d = u - 128;
int e = v - 128;
r = clamp((298 * c + 409 * e + 128) >> 8);
g = clamp((298 * c - 100 * d - 208 * e + 128) >> 8);
b = clamp((298 * c + 516 * d + 128) >> 8);
}