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Some very small optimizations in CImgUtil.

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This commit is contained in:
Leon Styhre 2021-11-09 22:57:15 +01:00
parent 3e12fcb420
commit 39926abc41
2 changed files with 8 additions and 8 deletions
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12
es-core/src/utils/CImgUtil.cpp
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@ -12,7 +12,7 @@ namespace Utils
{ {
namespace CImg namespace CImg
{ {
void convertRGBAToCImg(std::vector<unsigned char> imageRGBA, void convertRGBAToCImg(const std::vector<unsigned char>& imageRGBA,
cimg_library::CImg<unsigned char>& image) cimg_library::CImg<unsigned char>& image)
{ {
// CImg does not interleave the pixels as in RGBARGBARGBA so a conversion is required. // CImg does not interleave the pixels as in RGBARGBARGBA so a conversion is required.
@ -28,15 +28,15 @@ namespace Utils
} }
} }
void convertCImgToRGBA(cimg_library::CImg<unsigned char> image, void convertCImgToRGBA(const cimg_library::CImg<unsigned char>& image,
std::vector<unsigned char>& imageRGBA) std::vector<unsigned char>& imageRGBA)
{ {
for (int r = image.height() - 1; r >= 0; r--) { for (int r = image.height() - 1; r >= 0; r--) {
for (int c = 0; c < image.width(); c++) { for (int c = 0; c < image.width(); c++) {
imageRGBA.push_back((unsigned char)image(c, r, 0, 2)); imageRGBA.emplace_back((unsigned char)image(c, r, 0, 2));
imageRGBA.push_back((unsigned char)image(c, r, 0, 1)); imageRGBA.emplace_back((unsigned char)image(c, r, 0, 1));
imageRGBA.push_back((unsigned char)image(c, r, 0, 0)); imageRGBA.emplace_back((unsigned char)image(c, r, 0, 0));
imageRGBA.push_back((unsigned char)image(c, r, 0, 3)); imageRGBA.emplace_back((unsigned char)image(c, r, 0, 3));
} }
} }
} }

4
es-core/src/utils/CImgUtil.h
View file

@ -20,9 +20,9 @@ namespace Utils
{ {
namespace CImg namespace CImg
{ {
void convertRGBAToCImg(std::vector<unsigned char> imageRGBA, void convertRGBAToCImg(const std::vector<unsigned char>& imageRGBA,
cimg_library::CImg<unsigned char>& image); cimg_library::CImg<unsigned char>& image);
void convertCImgToRGBA(cimg_library::CImg<unsigned char> image, void convertCImgToRGBA(const cimg_library::CImg<unsigned char>& image,
std::vector<unsigned char>& imageRGBA); std::vector<unsigned char>& imageRGBA);
void getTransparentPaddingCoords(cimg_library::CImg<unsigned char>& image, void getTransparentPaddingCoords(cimg_library::CImg<unsigned char>& image,
int (&imageCoords)[4]); int (&imageCoords)[4]);