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update ImagingReduce5x5() to check pixelsize

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This commit is contained in:
Yay295 2022-08-25 10:10:49 -05:00
parent 94c4ac1f34
commit 87e9ab01fe
1 changed files with 53 additions and 37 deletions
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82
src/libImaging/Reduce.c
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@ -914,16 +914,16 @@ ImagingReduce4x4(Imaging imOut, Imaging imIn, int box[4]) {
}
void
ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
ImagingReduce5x5(Imaging imOut, Imaging imIn, const int box[4]) {
/* Fast special case for xscale = 5 and yscale = 5.
*/
int xscale = 5, yscale = 5;
const int xscale = 5, yscale = 5;
int x, y;
UINT32 ss0, ss1, ss2, ss3;
const UINT32 multiplier = division_UINT32(yscale * xscale, 8);
const UINT32 amend = yscale * xscale / 2;
if (imIn->image8) {
if (imIn->pixelsize == 1) {
for (y = 0; y < box[3] / yscale; y++) {
const int yy = box[1] + y * yscale;
const UINT8 *line0 = (UINT8 *)imIn->image[yy + 0];
@ -931,6 +931,7 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
const UINT8 *line2 = (UINT8 *)imIn->image[yy + 2];
const UINT8 *line3 = (UINT8 *)imIn->image[yy + 3];
const UINT8 *line4 = (UINT8 *)imIn->image[yy + 4];
UINT8 *out = (UINT8 *)imOut->image[y];
for (x = 0; x < box[2] / xscale; x++) {
const int xx = box[0] + x * xscale;
ss0 = line0[xx + 0] + line0[xx + 1] + line0[xx + 2] + line0[xx + 3] +
@ -940,10 +941,10 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
line3[xx + 1] + line3[xx + 2] + line3[xx + 3] + line3[xx + 4] +
line4[xx + 0] + line4[xx + 1] + line4[xx + 2] + line4[xx + 3] +
line4[xx + 4];
((UINT8 *)imOut->image[y])[x] = ((ss0 + amend) * multiplier) >> 24;
out[x] = ((ss0 + amend) * multiplier) >> 24;
}
}
} else {
} else if (imIn->pixelsize == 2) {
for (y = 0; y < box[3] / yscale; y++) {
const int yy = box[1] + y * yscale;
const UINT8 *line0 = (UINT8 *)imIn->image[yy + 0];
@ -951,35 +952,41 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
const UINT8 *line2 = (UINT8 *)imIn->image[yy + 2];
const UINT8 *line3 = (UINT8 *)imIn->image[yy + 3];
const UINT8 *line4 = (UINT8 *)imIn->image[yy + 4];
if (imIn->bands == 2) {
UINT8 *out = (UINT8 *)imOut->image[y];
for (x = 0; x < box[2] / xscale; x++) {
const int xx = box[0] + x * xscale;
ss0 = line0[xx * 4 + 0] + line0[xx * 4 + 4] + line0[xx * 4 + 8] +
line0[xx * 4 + 12] + line0[xx * 4 + 16] + line1[xx * 4 + 0] +
line1[xx * 4 + 4] + line1[xx * 4 + 8] + line1[xx * 4 + 12] +
line1[xx * 4 + 16] + line2[xx * 4 + 0] + line2[xx * 4 + 4] +
line2[xx * 4 + 8] + line2[xx * 4 + 12] + line2[xx * 4 + 16] +
line3[xx * 4 + 0] + line3[xx * 4 + 4] + line3[xx * 4 + 8] +
line3[xx * 4 + 12] + line3[xx * 4 + 16] + line4[xx * 4 + 0] +
line4[xx * 4 + 4] + line4[xx * 4 + 8] + line4[xx * 4 + 12] +
line4[xx * 4 + 16];
ss3 = line0[xx * 4 + 3] + line0[xx * 4 + 7] + line0[xx * 4 + 11] +
line0[xx * 4 + 15] + line0[xx * 4 + 19] + line1[xx * 4 + 3] +
line1[xx * 4 + 7] + line1[xx * 4 + 11] + line1[xx * 4 + 15] +
line1[xx * 4 + 19] + line2[xx * 4 + 3] + line2[xx * 4 + 7] +
line2[xx * 4 + 11] + line2[xx * 4 + 15] + line2[xx * 4 + 19] +
line3[xx * 4 + 3] + line3[xx * 4 + 7] + line3[xx * 4 + 11] +
line3[xx * 4 + 15] + line3[xx * 4 + 19] + line4[xx * 4 + 3] +
line4[xx * 4 + 7] + line4[xx * 4 + 11] + line4[xx * 4 + 15] +
line4[xx * 4 + 19];
const UINT32 v = MAKE_UINT32(
((ss0 + amend) * multiplier) >> 24,
0,
0,
((ss3 + amend) * multiplier) >> 24);
memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
ss0 = line0[xx * 2 + 0] + line0[xx * 2 + 2] + line0[xx * 2 + 4] +
line0[xx * 2 + 6] + line0[xx * 2 + 8] + line1[xx * 2 + 0] +
line1[xx * 2 + 2] + line1[xx * 2 + 4] + line1[xx * 2 + 6] +
line1[xx * 2 + 8] + line2[xx * 2 + 0] + line2[xx * 2 + 2] +
line2[xx * 2 + 4] + line2[xx * 2 + 6] + line2[xx * 2 + 8] +
line3[xx * 2 + 0] + line3[xx * 2 + 2] + line3[xx * 2 + 4] +
line3[xx * 2 + 6] + line3[xx * 2 + 8] + line4[xx * 2 + 0] +
line4[xx * 2 + 2] + line4[xx * 2 + 4] + line4[xx * 2 + 6] +
line4[xx * 2 + 8];
ss1 = line0[xx * 2 + 1] + line0[xx * 2 + 3] + line0[xx * 2 + 5] +
line0[xx * 2 + 7] + line0[xx * 2 + 9] + line1[xx * 2 + 1] +
line1[xx * 2 + 3] + line1[xx * 2 + 5] + line1[xx * 2 + 7] +
line1[xx * 2 + 9] + line2[xx * 2 + 1] + line2[xx * 2 + 3] +
line2[xx * 2 + 5] + line2[xx * 2 + 7] + line2[xx * 2 + 9] +
line3[xx * 2 + 1] + line3[xx * 2 + 3] + line3[xx * 2 + 5] +
line3[xx * 2 + 7] + line3[xx * 2 + 9] + line4[xx * 2 + 1] +
line4[xx * 2 + 3] + line4[xx * 2 + 5] + line4[xx * 2 + 7] +
line4[xx * 2 + 9];
out[x * 2 + 0] = ((ss0 + amend) * multiplier) >> 24;
out[x * 2 + 1] = ((ss1 + amend) * multiplier) >> 24;
}
} else if (imIn->bands == 3) {
}
} else if (imIn->pixelsize == 4) {
if (imIn->bands == 3) {
for (y = 0; y < box[3] / yscale; y++) {
const int yy = box[1] + y * yscale;
const UINT8 *line0 = (UINT8 *)imIn->image[yy + 0];
const UINT8 *line1 = (UINT8 *)imIn->image[yy + 1];
const UINT8 *line2 = (UINT8 *)imIn->image[yy + 2];
const UINT8 *line3 = (UINT8 *)imIn->image[yy + 3];
const UINT8 *line4 = (UINT8 *)imIn->image[yy + 4];
UINT8 *out = (UINT8 *)imOut->image[y];
for (x = 0; x < box[2] / xscale; x++) {
const int xx = box[0] + x * xscale;
ss0 = line0[xx * 4 + 0] + line0[xx * 4 + 4] + line0[xx * 4 + 8] +
@ -1014,9 +1021,18 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
((ss1 + amend) * multiplier) >> 24,
((ss2 + amend) * multiplier) >> 24,
0);
memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
memcpy(out + x * sizeof(v), &v, sizeof(v));
}
}
} else if (imIn->bands == 4) {
for (y = 0; y < box[3] / yscale; y++) {
const int yy = box[1] + y * yscale;
const UINT8 *line0 = (UINT8 *)imIn->image[yy + 0];
const UINT8 *line1 = (UINT8 *)imIn->image[yy + 1];
const UINT8 *line2 = (UINT8 *)imIn->image[yy + 2];
const UINT8 *line3 = (UINT8 *)imIn->image[yy + 3];
const UINT8 *line4 = (UINT8 *)imIn->image[yy + 4];
UINT8 *out = (UINT8 *)imOut->image[y];
for (x = 0; x < box[2] / xscale; x++) {
const int xx = box[0] + x * xscale;
ss0 = line0[xx * 4 + 0] + line0[xx * 4 + 4] + line0[xx * 4 + 8] +
@ -1060,7 +1076,7 @@ ImagingReduce5x5(Imaging imOut, Imaging imIn, int box[4]) {
((ss1 + amend) * multiplier) >> 24,
((ss2 + amend) * multiplier) >> 24,
((ss3 + amend) * multiplier) >> 24);
memcpy(imOut->image[y] + x * sizeof(v), &v, sizeof(v));
memcpy(out + x * sizeof(v), &v, sizeof(v));
}
}
}