python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2024-09-21 03:18:57 +03:00
Code Issues Packages Projects Releases Wiki Activity

Faster ImagingFlipLeftRight

Browse Source
This commit is contained in:
Alexander 2017-09-10 12:45:45 +03:00
parent 1bd1cb14c7
commit 6df28bc359
1 changed files with 19 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
libImaging/Geometry.c
View File

@ -26,24 +26,30 @@ ImagingFlipLeftRight(Imaging imOut, Imaging imIn)
ImagingCopyInfo(imOut, imIn); ImagingCopyInfo(imOut, imIn);
#define FLIP_HORIZ(image)\
for (y = 0; y < imIn->ysize; y++) {\
xr = imIn->xsize-1;\
for (x = 0; x < imIn->xsize; x++, xr--)\
imOut->image[y][x] = imIn->image[y][xr];\
}
ImagingSectionEnter(&cookie); ImagingSectionEnter(&cookie);
if (imIn->image8) if (imIn->image8) {
FLIP_HORIZ(image8) for (y = 0; y < imIn->ysize; y++) {
else UINT8* in = (UINT8*) imIn->image8[y];
FLIP_HORIZ(image32) UINT8* out = (UINT8*) imOut->image8[y];
x = 0;
xr = imIn->xsize-1;
for (; x < imIn->xsize; x++, xr--)
out[xr] = in[x];
}
} else {
for (y = 0; y < imIn->ysize; y++) {
UINT32* in = (UINT32*) imIn->image32[y];
UINT32* out = (UINT32*) imOut->image32[y];
x = 0;
xr = imIn->xsize-1;
for (; x < imIn->xsize; x++, xr--)
out[xr] = in[x];
}
}
ImagingSectionLeave(&cookie); ImagingSectionLeave(&cookie);
#undef FLIP_HORIZ
return imOut; return imOut;
} }