frodovdr/hyperion.ng
1
0
Fork 0
mirror of https://github.com/hyperion-project/hyperion.ng.git synced 2025-03-01 10:33:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Refactor color utils (#955)

Browse Source 
Co-authored-by: Paulchen Panther <16664240+Paulchen-Panther@users.noreply.github.com>
This commit is contained in:
Murat Seker
2020-08-08 13:22:37 +02:00
committed by GitHub
parent 63d95a5a2a
commit a18ccb8b48
20 changed files with 181 additions and 120 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
libsrc/utils/ImageResampler.cpp
View File

@@ -1,5 +1,5 @@
#include "utils/ImageResampler.h"
#include <utils/ColorSys.h>
#include <utils/Logger.h>
ImageResampler::ImageResampler()
@@ -80,7 +80,7 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
uint8_t y = data[index+1];
uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2];
uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ];
yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
}
break;
case PixelFormat::YUYV:
@@ -89,7 +89,7 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
uint8_t y = data[index];
uint8_t u = ((xSource&1) == 0) ? data[index+1] : data[index-1];
uint8_t v = ((xSource&1) == 0) ? data[index+3] : data[index+1];
yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
}
break;
case PixelFormat::BGR16:
@@ -135,20 +135,3 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
}
}
}
uint8_t ImageResampler::clamp(int x)
{
return (x<0) ? 0 : ((x>255) ? 255 : uint8_t(x));
}
void ImageResampler::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);
}