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2 times faster ImagingRotate180

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This commit is contained in:
Alexander 2017-09-11 01:07:38 +03:00
parent 97141bcfd6
commit 67459795db
1 changed files with 19 additions and 17 deletions
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36
libImaging/Geometry.c
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@ -32,18 +32,16 @@ ImagingFlipLeftRight(Imaging imOut, Imaging imIn)
for (y = 0; y < imIn->ysize; y++) {
UINT8* in = (UINT8*) imIn->image8[y];
UINT8* out = (UINT8*) imOut->image8[y];
x = 0;
xr = imIn->xsize-1;
for (; x < imIn->xsize; x++, xr--)
for (x = 0; 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--)
for (x = 0; x < imIn->xsize; x++, xr--)
out[xr] = in[x];
}
}
@ -175,25 +173,29 @@ ImagingRotate180(Imaging imOut, Imaging imIn)
ImagingCopyInfo(imOut, imIn);
#define ROTATE_180(image)\
for (y = 0; y < imIn->ysize; y++, yr--) {\
xr = imIn->xsize-1;\
for (x = 0; x < imIn->xsize; x++, xr--)\
imOut->image[y][x] = imIn->image[yr][xr];\
}
ImagingSectionEnter(&cookie);
yr = imIn->ysize-1;
if (imIn->image8)
ROTATE_180(image8)
else
ROTATE_180(image32)
if (imIn->image8) {
for (y = 0; y < imIn->ysize; y++, yr--) {
UINT8* in = (UINT8*) imIn->image8[y];
UINT8* out = (UINT8*) imOut->image8[yr];
xr = imIn->xsize-1;
for (x = 0; x < imIn->xsize; x++, xr--)
out[xr] = in[x];
}
} else {
for (y = 0; y < imIn->ysize; y++, yr--) {
UINT32* in = (UINT32*) imIn->image32[y];
UINT32* out = (UINT32*) imOut->image32[yr];
xr = imIn->xsize-1;
for (x = 0; x < imIn->xsize; x++, xr--)
out[xr] = in[x];
}
}
ImagingSectionLeave(&cookie);
#undef ROTATE_180
return imOut;
}