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first Horizontal Blur for 32

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This commit is contained in:
homm 2014-10-12 17:11:24 +04:00
parent d49459f5b2
commit a6937d84d8
1 changed files with 47 additions and 1 deletions
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48
libImaging/BoxBlur.c
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@ -2,7 +2,53 @@
#include "Imaging.h"
Imaging ImagingBoxBlur(Imaging im, Imaging imOut, int radius)
Imaging
HorizontalBoxBlur32(Imaging im, Imaging imOut, int radius)
{
ImagingSectionCookie cookie;
int x, y, pix, offset;
int acc[4];
typedef UINT8 pixel[4];
pixel *line;
int window = radius * 2 + 1;
ImagingSectionEnter(&cookie);
for (y = 0; y < im->ysize; y++) {
line = (pixel *) im->image32[y];
for (x = 0; x < im->xsize; x++) {
acc[0] = acc[1] = acc[2] = acc[3] = 0;
for (pix = x - radius; pix <= x + radius; pix++) {
offset = pix;
if (pix < 0) {
offset = 0;
} else if (pix >= im->xsize) {
offset = im->xsize - 1;
}
acc[0] += line[offset][0];
acc[1] += line[offset][1];
acc[2] += line[offset][2];
acc[3] += line[offset][3];
}
imOut->image32[y][x] =
(UINT8)(acc[0] / window) | (UINT8)(acc[1] / window) << 8 |
(UINT8)(acc[2] / window) << 16 | (UINT8)(acc[3] / window) << 24;
}
}
ImagingSectionLeave(&cookie);
return imOut;
}
Imaging
ImagingBoxBlur(Imaging im, Imaging imOut, int radius)
{
HorizontalBoxBlur32(im, imOut, radius);
return imOut;
}