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change xmax meaning to avoid substructions

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This commit is contained in:
homm 2016-05-09 14:39:08 +02:00
parent 7722d00daf
commit eec17c0c7a
1 changed files with 23 additions and 22 deletions
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45
libImaging/Resample.c
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@ -123,13 +123,14 @@ ImagingPrecompute(int inSize, int outSize, struct filter *filterp,
xmax = (int) ceil(center + support);
if (xmax > inSize)
xmax = inSize;
xmax -= xmin;
k = &kk[xx * kmax];
for (x = xmin; x < xmax; x++) {
double w = filterp->filter((x - center + 0.5) * ss);
k[x - xmin] = w;
for (x = 0; x < xmax; x++) {
double w = filterp->filter((x + xmin - center + 0.5) * ss);
k[x] = w;
ww += w;
}
for (x = 0; x < xmax - xmin; x++) {
for (x = 0; x < xmax; x++) {
if (ww != 0.0)
k[x] /= ww;
}
@ -187,8 +188,8 @@ ImagingResampleHorizontal_8bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss0 = 1 << (PRECISION_BITS -1);
for (x = xmin; x < xmax; x++)
ss0 += ((UINT8) imIn->image8[yy][x]) * k[x - xmin];
for (x = 0; x < xmax; x++)
ss0 += ((UINT8) imIn->image8[yy][x + xmin]) * k[x];
imOut->image8[yy][xx] = clip8(ss0);
}
}
@ -200,9 +201,9 @@ ImagingResampleHorizontal_8bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss0 = ss1 = 1 << (PRECISION_BITS -1);
for (x = xmin; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][x*4 + 0]) * k[x - xmin];
ss1 += ((UINT8) imIn->image[yy][x*4 + 3]) * k[x - xmin];
for (x = 0; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 0]) * k[x];
ss1 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 3]) * k[x];
}
imOut->image[yy][xx*4 + 0] = clip8(ss0);
imOut->image[yy][xx*4 + 3] = clip8(ss1);
@ -215,10 +216,10 @@ ImagingResampleHorizontal_8bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss0 = ss1 = ss2 = 1 << (PRECISION_BITS -1);
for (x = xmin; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][x*4 + 0]) * k[x - xmin];
ss1 += ((UINT8) imIn->image[yy][x*4 + 1]) * k[x - xmin];
ss2 += ((UINT8) imIn->image[yy][x*4 + 2]) * k[x - xmin];
for (x = 0; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 0]) * k[x];
ss1 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 1]) * k[x];
ss2 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 2]) * k[x];
}
imOut->image[yy][xx*4 + 0] = clip8(ss0);
imOut->image[yy][xx*4 + 1] = clip8(ss1);
@ -232,11 +233,11 @@ ImagingResampleHorizontal_8bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss0 = ss1 = ss2 = ss3 = 1 << (PRECISION_BITS -1);
for (x = xmin; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][x*4 + 0]) * k[x - xmin];
ss1 += ((UINT8) imIn->image[yy][x*4 + 1]) * k[x - xmin];
ss2 += ((UINT8) imIn->image[yy][x*4 + 2]) * k[x - xmin];
ss3 += ((UINT8) imIn->image[yy][x*4 + 3]) * k[x - xmin];
for (x = 0; x < xmax; x++) {
ss0 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 0]) * k[x];
ss1 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 1]) * k[x];
ss2 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 2]) * k[x];
ss3 += ((UINT8) imIn->image[yy][(x + xmin)*4 + 3]) * k[x];
}
imOut->image[yy][xx*4 + 0] = clip8(ss0);
imOut->image[yy][xx*4 + 1] = clip8(ss1);
@ -285,8 +286,8 @@ ImagingResampleHorizontal_32bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss = 0.0;
for (x = xmin; x < xmax; x++)
ss += IMAGING_PIXEL_I(imIn, x, yy) * k[x - xmin];
for (x = 0; x < xmax; x++)
ss += IMAGING_PIXEL_I(imIn, x + xmin, yy) * k[x];
IMAGING_PIXEL_I(imOut, xx, yy) = ROUND_UP(ss);
}
}
@ -299,8 +300,8 @@ ImagingResampleHorizontal_32bpc(Imaging imIn, int xsize, struct filter *filterp)
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss = 0.0;
for (x = xmin; x < xmax; x++)
ss += IMAGING_PIXEL_F(imIn, x, yy) * k[x - xmin];
for (x = 0; x < xmax; x++)
ss += IMAGING_PIXEL_F(imIn, x + xmin, yy) * k[x];
IMAGING_PIXEL_F(imOut, xx, yy) = ss;
}
}