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Merge branch 'add-transpose' into fast-box-blur

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This commit is contained in:
homm 2014-10-25 04:18:43 +04:00
commit 316ac5ad57
2 changed files with 39 additions and 0 deletions
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38
libImaging/Geometry.c
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@ -127,6 +127,44 @@ ImagingRotate90(Imaging imOut, Imaging imIn)
}
Imaging
ImagingTranspose(Imaging imOut, Imaging imIn)
{
ImagingSectionCookie cookie;
int x, y, xx, yy, xxsize, yysize;
int size = 64;
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0)
return (Imaging) ImagingError_ModeError();
if (imIn->xsize != imOut->ysize || imIn->ysize != imOut->xsize)
return (Imaging) ImagingError_Mismatch();
#define TRANSPOSE(image) \
for (y = 0; y < imIn->ysize; y += size) { \
for (x = 0; x < imIn->xsize; x += size) { \
yysize = size < (imIn->ysize - y) ? size : (imIn->ysize - y); \
xxsize = size < (imIn->xsize - x) ? size : (imIn->xsize - x); \
for (yy = 0; yy < yysize; yy++) { \
for (xx = 0; xx < xxsize; xx++) { \
imOut->image[x + xx][y + yy] = imIn->image[y + yy][x + xx]; \
} \
} \
} \
}
ImagingCopyInfo(imOut, imIn);
ImagingSectionEnter(&cookie);
if (imIn->image8)
TRANSPOSE(image8)
else
TRANSPOSE(image32)
ImagingSectionLeave(&cookie);
return imOut;
}
Imaging
ImagingRotate180(Imaging imOut, Imaging imIn)
{

1
libImaging/Imaging.h
View File

@ -292,6 +292,7 @@ extern Imaging ImagingRotate90(Imaging imOut, Imaging imIn);
extern Imaging ImagingRotate180(Imaging imOut, Imaging imIn);
extern Imaging ImagingRotate270(Imaging imOut, Imaging imIn);
extern Imaging ImagingStretch(Imaging imOut, Imaging imIn, int filter);
extern Imaging ImagingTranspose(Imaging imOut, Imaging imIn);
extern Imaging ImagingTransformPerspective(
Imaging imOut, Imaging imIn, int x0, int y0, int x1, int y1,
double a[8], int filter, int fill);