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faster ImagingSplit

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This commit is contained in:
Alexander 2017-08-12 15:49:23 +03:00
parent ca75d63f3a
commit 6ce6cc7537
1 changed files with 24 additions and 3 deletions
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27
libImaging/Bands.c
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@ -100,7 +100,13 @@ ImagingSplit(Imaging imIn, Imaging bands[4])
UINT8* in = (UINT8*) imIn->image[y];
UINT8* out0 = bands[0]->image8[y];
UINT8* out1 = bands[1]->image8[y];
for (x = 0; x < imIn->xsize; x++) {
x = 0;
for (; x < imIn->xsize - 3; x += 4) {
*((UINT32*) (out0 + x)) = MAKE_UINT32(in[0], in[4], in[8], in[12]);
*((UINT32*) (out1 + x)) = MAKE_UINT32(in[0+3], in[4+3], in[8+3], in[12+3]);
in += 16;
}
for (; x < imIn->xsize; x++) {
out0[x] = in[0];
out1[x] = in[3];
in += 4;
@ -112,7 +118,14 @@ ImagingSplit(Imaging imIn, Imaging bands[4])
UINT8* out0 = bands[0]->image8[y];
UINT8* out1 = bands[1]->image8[y];
UINT8* out2 = bands[2]->image8[y];
for (x = 0; x < imIn->xsize; x++) {
x = 0;
for (; x < imIn->xsize - 3; x += 4) {
*((UINT32*) (out0 + x)) = MAKE_UINT32(in[0], in[4], in[8], in[12]);
*((UINT32*) (out1 + x)) = MAKE_UINT32(in[0+1], in[4+1], in[8+1], in[12+1]);
*((UINT32*) (out2 + x)) = MAKE_UINT32(in[0+2], in[4+2], in[8+2], in[12+2]);
in += 16;
}
for (; x < imIn->xsize; x++) {
out0[x] = in[0];
out1[x] = in[1];
out2[x] = in[2];
@ -126,7 +139,15 @@ ImagingSplit(Imaging imIn, Imaging bands[4])
UINT8* out1 = bands[1]->image8[y];
UINT8* out2 = bands[2]->image8[y];
UINT8* out3 = bands[3]->image8[y];
for (x = 0; x < imIn->xsize; x++) {
x = 0;
for (; x < imIn->xsize - 3; x += 4) {
*((UINT32*) (out0 + x)) = MAKE_UINT32(in[0], in[4], in[8], in[12]);
*((UINT32*) (out1 + x)) = MAKE_UINT32(in[0+1], in[4+1], in[8+1], in[12+1]);
*((UINT32*) (out2 + x)) = MAKE_UINT32(in[0+2], in[4+2], in[8+2], in[12+2]);
*((UINT32*) (out3 + x)) = MAKE_UINT32(in[0+3], in[4+3], in[8+3], in[12+3]);
in += 16;
}
for (; x < imIn->xsize; x++) {
out0[x] = in[0];
out1[x] = in[1];
out2[x] = in[2];