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complete ImagingResampleVertical_8bpc implementation

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This commit is contained in:
homm 2016-05-27 07:12:01 +03:00
parent a1b12f792a
commit 5cd8c35c82
1 changed files with 46 additions and 3 deletions
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49
libImaging/Resample.c
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@ -200,13 +200,13 @@ ImagingResampleHorizontal_8bpc(Imaging imIn, int xsize, struct filter *filterp)
xmin = xbounds[xx * 2 + 0];
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
ss0 = ss1 = 1 << (PRECISION_BITS -1);
ss0 = ss3 = 1 << (PRECISION_BITS -1);
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];
ss3 += ((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);
imOut->image[yy][xx*4 + 3] = clip8(ss3);
}
}
} else if (imIn->bands == 3) {
@ -294,8 +294,33 @@ ImagingResampleVertical_8bpc(Imaging imIn, int ysize, struct filter *filterp)
ImagingSectionEnter(&cookie);
if (imIn->image8) {
for (yy = 0; yy < ysize; yy++) {
k = &kk[yy * kmax];
ymin = xbounds[yy * 2 + 0];
ymax = xbounds[yy * 2 + 1];
for (xx = 0; xx < imOut->xsize; xx++) {
ss0 = 1 << (PRECISION_BITS -1);
for (y = 0; y < ymax; y++)
ss0 += ((UINT8) imIn->image8[y + ymin][xx]) * k[y];
imOut->image8[yy][xx] = clip8(ss0);
}
}
} else if (imIn->type == IMAGING_TYPE_UINT8) {
if (imIn->bands == 2) {
for (yy = 0; yy < ysize; yy++) {
k = &kk[yy * kmax];
ymin = xbounds[yy * 2 + 0];
ymax = xbounds[yy * 2 + 1];
for (xx = 0; xx < imOut->xsize; xx++) {
ss0 = ss3 = 1 << (PRECISION_BITS -1);
for (y = 0; y < ymax; y++) {
ss0 += ((UINT8) imIn->image[y + ymin][xx*4 + 0]) * k[y];
ss3 += ((UINT8) imIn->image[y + ymin][xx*4 + 3]) * k[y];
}
imOut->image[yy][xx*4 + 0] = clip8(ss0);
imOut->image[yy][xx*4 + 3] = clip8(ss3);
}
}
} else if (imIn->bands == 3) {
for (yy = 0; yy < ysize; yy++) {
k = &kk[yy * kmax];
@ -314,6 +339,24 @@ ImagingResampleVertical_8bpc(Imaging imIn, int ysize, struct filter *filterp)
}
}
} else {
for (yy = 0; yy < ysize; yy++) {
k = &kk[yy * kmax];
ymin = xbounds[yy * 2 + 0];
ymax = xbounds[yy * 2 + 1];
for (xx = 0; xx < imOut->xsize; xx++) {
ss0 = ss1 = ss2 = ss3 = 1 << (PRECISION_BITS -1);
for (y = 0; y < ymax; y++) {
ss0 += ((UINT8) imIn->image[y + ymin][xx*4 + 0]) * k[y];
ss1 += ((UINT8) imIn->image[y + ymin][xx*4 + 1]) * k[y];
ss2 += ((UINT8) imIn->image[y + ymin][xx*4 + 2]) * k[y];
ss3 += ((UINT8) imIn->image[y + ymin][xx*4 + 3]) * k[y];
}
imOut->image[yy][xx*4 + 0] = clip8(ss0);
imOut->image[yy][xx*4 + 1] = clip8(ss1);
imOut->image[yy][xx*4 + 2] = clip8(ss2);
imOut->image[yy][xx*4 + 3] = clip8(ss3);
}
}
}
}