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-rw-r--r--src/gui/painting/qimagescale.cpp213
1 files changed, 75 insertions, 138 deletions
diff --git a/src/gui/painting/qimagescale.cpp b/src/gui/painting/qimagescale.cpp
index 5f1b25e189..867c64c5e0 100644
--- a/src/gui/painting/qimagescale.cpp
+++ b/src/gui/painting/qimagescale.cpp
@@ -38,22 +38,6 @@
QT_BEGIN_NAMESPACE
-typedef void (*qt_qimageScaleFunc)(QImageScale::QImageScaleInfo *isi, unsigned int *dest,
- int dxx, int dyy, int dx, int dy, int dw,
- int dh, int dow, int sow);
-
-static void qt_qimageScaleAARGB(QImageScale::QImageScaleInfo *isi, unsigned int *dest,
- int dxx, int dyy, int dx, int dy, int dw,
- int dh, int dow, int sow);
-
-static void qt_qimageScaleAARGBA(QImageScale::QImageScaleInfo *isi, unsigned int *dest,
- int dxx, int dyy, int dx, int dy, int dw,
- int dh, int dow, int sow);
-
-qt_qimageScaleFunc qt_qimageScaleArgb = qt_qimageScaleAARGBA;
-qt_qimageScaleFunc qt_qimageScaleRgb = qt_qimageScaleAARGB;
-
-
/*
* Copyright (C) 2004, 2005 Daniel M. Duley
*
@@ -93,6 +77,8 @@ qt_qimageScaleFunc qt_qimageScaleRgb = qt_qimageScaleAARGB;
*
* Changes include formatting, namespaces and other C++'ings, removal of old
* #ifdef'ed code, and removal of unneeded border calculation code.
+ * Later the code has been refactored and an SSE4.1 optimizated path have been
+ * added instead of the removed MMX assembler.
*
* Imlib2 is (C) Carsten Haitzler and various contributors. The MMX code
* is by Willem Monsuwe <willem@stack.nl>. All other modifications are
@@ -115,21 +101,14 @@ using namespace QImageScale;
// Code ported from Imlib...
//
-// FIXME: replace with qRed, etc... These work on pointers to pixels, not
-// pixel values
-#define A_VAL(p) (qAlpha(*p))
-#define R_VAL(p) (qRed(*p))
-#define G_VAL(p) (qGreen(*p))
-#define B_VAL(p) (qBlue(*p))
-
const unsigned int** QImageScale::qimageCalcYPoints(const unsigned int *src,
- int sw, int sh, int dh)
+ int sw, int sh, int dh)
{
const unsigned int **p;
int j = 0, rv = 0;
qint64 val, inc;
- if(dh < 0){
+ if (dh < 0) {
dh = -dh;
rv = 1;
}
@@ -157,7 +136,7 @@ int* QImageScale::qimageCalcXPoints(int sw, int dw)
int *p, j = 0, rv = 0;
qint64 val, inc;
- if(dw < 0){
+ if (dw < 0) {
dw = -dw;
rv = 1;
}
@@ -178,25 +157,23 @@ int* QImageScale::qimageCalcXPoints(int sw, int dw)
p[dw - i - 1] = tmp;
}
}
- return(p);
+ return p;
}
int* QImageScale::qimageCalcApoints(int s, int d, int up)
{
int *p, j = 0, rv = 0;
- if(d < 0){
+ if (d < 0) {
rv = 1;
d = -d;
}
p = new int[d];
- /* scaling up */
- if(up){
- qint64 val, inc;
-
- val = 0x8000 * s / d - 0x8000;
- inc = (((qint64)s) << 16) / d;
+ if (up) {
+ /* scaling up */
+ qint64 val = 0x8000 * s / d - 0x8000;
+ qint64 inc = (((qint64)s) << 16) / d;
for (int i = 0; i < d; i++) {
int pos = val >> 16;
if (pos < 0)
@@ -207,9 +184,8 @@ int* QImageScale::qimageCalcApoints(int s, int d, int up)
p[j++] = (val >> 8) - ((val >> 8) & 0xffffff00);
val += inc;
}
- }
- /* scaling down */
- else {
+ } else {
+ /* scaling down */
qint64 val = 0;
qint64 inc = (((qint64)s) << 16) / d;
int Cp = (((d << 14) + s - 1) / s);
@@ -220,7 +196,7 @@ int* QImageScale::qimageCalcApoints(int s, int d, int up)
val += inc;
}
}
- if(rv){
+ if (rv) {
int tmp;
for (int i = d / 2; --i >= 0; ) {
tmp = p[i];
@@ -233,7 +209,7 @@ int* QImageScale::qimageCalcApoints(int s, int d, int up)
QImageScaleInfo* QImageScale::qimageFreeScaleInfo(QImageScaleInfo *isi)
{
- if(isi){
+ if (isi) {
delete[] isi->xpoints;
delete[] isi->ypoints;
delete[] isi->xapoints;
@@ -254,28 +230,28 @@ QImageScaleInfo* QImageScale::qimageCalcScaleInfo(const QImage &img,
sch = dh * qlonglong(img.height()) / sh;
isi = new QImageScaleInfo;
- if(!isi)
+ if (!isi)
return 0;
memset(isi, 0, sizeof(QImageScaleInfo));
isi->xup_yup = (qAbs(dw) >= sw) + ((qAbs(dh) >= sh) << 1);
isi->xpoints = qimageCalcXPoints(img.width(), scw);
- if(!isi->xpoints)
- return(qimageFreeScaleInfo(isi));
+ if (!isi->xpoints)
+ return qimageFreeScaleInfo(isi);
isi->ypoints = qimageCalcYPoints((const unsigned int *)img.scanLine(0),
img.bytesPerLine() / 4, img.height(), sch);
if (!isi->ypoints)
- return(qimageFreeScaleInfo(isi));
- if(aa) {
+ return qimageFreeScaleInfo(isi);
+ if (aa) {
isi->xapoints = qimageCalcApoints(img.width(), scw, isi->xup_yup & 1);
- if(!isi->xapoints)
- return(qimageFreeScaleInfo(isi));
+ if (!isi->xapoints)
+ return qimageFreeScaleInfo(isi);
isi->yapoints = qimageCalcApoints(img.height(), sch, isi->xup_yup & 2);
- if(!isi->yapoints)
- return(qimageFreeScaleInfo(isi));
+ if (!isi->yapoints)
+ return qimageFreeScaleInfo(isi);
}
- return(isi);
+ return isi;
}
@@ -349,7 +325,7 @@ static void qt_qimageScaleAARGBA(QImageScaleInfo *isi, unsigned int *dest,
int dh, int dow, int sow)
{
/* scaling up both ways */
- if (isi->xup_yup == 3){
+ if (isi->xup_yup == 3) {
qt_qimageScaleAARGBA_up_xy(isi, dest, dxx, dyy, dx, dy, dw, dh, dow, sow);
}
/* if we're scaling down vertically */
@@ -381,46 +357,25 @@ static void qt_qimageScaleAARGBA(QImageScaleInfo *isi, unsigned int *dest,
}
}
-inline static void qt_qimageScaleAARGBA_helper_x(const unsigned int *pix, int xap, int Cx, int &r, int &g, int &b, int &a)
+inline static void qt_qimageScaleAARGBA_helper(const unsigned int *pix, int xyap, int Cxy, int step, int &r, int &g, int &b, int &a)
{
- r = R_VAL(pix) * xap;
- g = G_VAL(pix) * xap;
- b = B_VAL(pix) * xap;
- a = A_VAL(pix) * xap;
+ r = qRed(*pix) * xyap;
+ g = qGreen(*pix) * xyap;
+ b = qBlue(*pix) * xyap;
+ a = qAlpha(*pix) * xyap;
int j;
- for (j = (1 << 14) - xap; j > Cx; j -= Cx ){
- pix++;
- r += R_VAL(pix) * Cx;
- g += G_VAL(pix) * Cx;
- b += B_VAL(pix) * Cx;
- a += A_VAL(pix) * Cx;
- }
- pix++;
- r += R_VAL(pix) * j;
- g += G_VAL(pix) * j;
- b += B_VAL(pix) * j;
- a += A_VAL(pix) * j;
-}
-
-inline static void qt_qimageScaleAARGBA_helper_y(const unsigned int *pix, int yap, int Cy, int sow, int &r, int &g, int &b, int &a)
-{
- r = R_VAL(pix) * yap;
- g = G_VAL(pix) * yap;
- b = B_VAL(pix) * yap;
- a = A_VAL(pix) * yap;
- int j;
- for (j = (1 << 14) - yap; j > Cy; j -= Cy ){
- pix += sow;
- r += R_VAL(pix) * Cy;
- g += G_VAL(pix) * Cy;
- b += B_VAL(pix) * Cy;
- a += A_VAL(pix) * Cy;
- }
- pix += sow;
- r += R_VAL(pix) * j;
- g += G_VAL(pix) * j;
- b += B_VAL(pix) * j;
- a += A_VAL(pix) * j;
+ for (j = (1 << 14) - xyap; j > Cxy; j -= Cxy) {
+ pix += step;
+ r += qRed(*pix) * Cxy;
+ g += qGreen(*pix) * Cxy;
+ b += qBlue(*pix) * Cxy;
+ a += qAlpha(*pix) * Cxy;
+ }
+ pix += step;
+ r += qRed(*pix) * j;
+ g += qGreen(*pix) * j;
+ b += qBlue(*pix) * j;
+ a += qAlpha(*pix) * j;
}
static void qt_qimageScaleAARGBA_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,
@@ -443,12 +398,12 @@ static void qt_qimageScaleAARGBA_up_x_down_y(QImageScaleInfo *isi, unsigned int
for (int x = dxx; x < end; x++) {
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int r, g, b, a;
- qt_qimageScaleAARGBA_helper_y(sptr, yap, Cy, sow, r, g, b, a);
+ qt_qimageScaleAARGBA_helper(sptr, yap, Cy, sow, r, g, b, a);
int xap = xapoints[x];
if (xap > 0) {
int rr, gg, bb, aa;
- qt_qimageScaleAARGBA_helper_y(sptr + 1, yap, Cy, sow, rr, gg, bb, aa);
+ qt_qimageScaleAARGBA_helper(sptr + 1, yap, Cy, sow, rr, gg, bb, aa);
r = r * (256 - xap);
g = g * (256 - xap);
@@ -484,12 +439,12 @@ static void qt_qimageScaleAARGBA_down_x_up_y(QImageScaleInfo *isi, unsigned int
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int r, g, b, a;
- qt_qimageScaleAARGBA_helper_x(sptr, xap, Cx, r, g, b, a);
+ qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, r, g, b, a);
int yap = yapoints[dyy + y];
if (yap > 0) {
int rr, gg, bb, aa;
- qt_qimageScaleAARGBA_helper_x(sptr + sow, xap, Cx, rr, gg, bb, aa);
+ qt_qimageScaleAARGBA_helper(sptr + sow, xap, Cx, 1, rr, gg, bb, aa);
r = r * (256 - yap);
g = g * (256 - yap);
@@ -528,7 +483,7 @@ static void qt_qimageScaleAARGBA_down_xy(QImageScaleInfo *isi, unsigned int *des
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int rx, gx, bx, ax;
- qt_qimageScaleAARGBA_helper_x(sptr, xap, Cx, rx, gx, bx, ax);
+ qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);
int r = ((rx>>4) * yap);
int g = ((gx>>4) * yap);
@@ -538,14 +493,14 @@ static void qt_qimageScaleAARGBA_down_xy(QImageScaleInfo *isi, unsigned int *des
int j;
for (j = (1 << 14) - yap; j > Cy; j -= Cy) {
sptr += sow;
- qt_qimageScaleAARGBA_helper_x(sptr, xap, Cx, rx, gx, bx, ax);
+ qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);
r += ((rx>>4) * Cy);
g += ((gx>>4) * Cy);
b += ((bx>>4) * Cy);
a += ((ax>>4) * Cy);
}
sptr += sow;
- qt_qimageScaleAARGBA_helper_x(sptr, xap, Cx, rx, gx, bx, ax);
+ qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);
r += ((rx>>4) * j);
g += ((gx>>4) * j);
@@ -609,40 +564,22 @@ static void qt_qimageScaleAARGB(QImageScaleInfo *isi, unsigned int *dest,
}
-inline static void qt_qimageScaleAARGB_helper_x(const unsigned int *pix, int xap, int Cx, int &r, int &g, int &b)
+inline static void qt_qimageScaleAARGB_helper(const unsigned int *pix, int xyap, int Cxy, int step, int &r, int &g, int &b)
{
- r = R_VAL(pix) * xap;
- g = G_VAL(pix) * xap;
- b = B_VAL(pix) * xap;
+ r = qRed(*pix) * xyap;
+ g = qGreen(*pix) * xyap;
+ b = qBlue(*pix) * xyap;
int j;
- for (j = (1 << 14) - xap; j > Cx; j -= Cx ){
- pix++;
- r += R_VAL(pix) * Cx;
- g += G_VAL(pix) * Cx;
- b += B_VAL(pix) * Cx;
- }
- pix++;
- r += R_VAL(pix) * j;
- g += G_VAL(pix) * j;
- b += B_VAL(pix) * j;
-}
-
-inline static void qt_qimageScaleAARGB_helper_y(const unsigned int *pix, int yap, int Cy, int sow, int &r, int &g, int &b)
-{
- r = R_VAL(pix) * yap;
- g = G_VAL(pix) * yap;
- b = B_VAL(pix) * yap;
- int j;
- for (j = (1 << 14) - yap; j > Cy; j -= Cy ){
- pix += sow;
- r += R_VAL(pix) * Cy;
- g += G_VAL(pix) * Cy;
- b += B_VAL(pix) * Cy;
- }
- pix += sow;
- r += R_VAL(pix) * j;
- g += G_VAL(pix) * j;
- b += B_VAL(pix) * j;
+ for (j = (1 << 14) - xyap; j > Cxy; j -= Cxy) {
+ pix += step;
+ r += qRed(*pix) * Cxy;
+ g += qGreen(*pix) * Cxy;
+ b += qBlue(*pix) * Cxy;
+ }
+ pix += step;
+ r += qRed(*pix) * j;
+ g += qGreen(*pix) * j;
+ b += qBlue(*pix) * j;
}
static void qt_qimageScaleAARGB_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,
@@ -665,12 +602,12 @@ static void qt_qimageScaleAARGB_up_x_down_y(QImageScaleInfo *isi, unsigned int *
for (int x = dxx; x < end; x++) {
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int r, g, b;
- qt_qimageScaleAARGB_helper_y(sptr, yap, Cy, sow, r, g, b);
+ qt_qimageScaleAARGB_helper(sptr, yap, Cy, sow, r, g, b);
int xap = xapoints[x];
if (xap > 0) {
int rr, bb, gg;
- qt_qimageScaleAARGB_helper_y(sptr + 1, yap, Cy, sow, rr, gg, bb);
+ qt_qimageScaleAARGB_helper(sptr + 1, yap, Cy, sow, rr, gg, bb);
r = r * (256 - xap);
g = g * (256 - xap);
@@ -704,12 +641,12 @@ static void qt_qimageScaleAARGB_down_x_up_y(QImageScaleInfo *isi, unsigned int *
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int r, g, b;
- qt_qimageScaleAARGB_helper_x(sptr, xap, Cx, r, g, b);
+ qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, r, g, b);
int yap = yapoints[dyy + y];
if (yap > 0) {
int rr, bb, gg;
- qt_qimageScaleAARGB_helper_x(sptr + sow, xap, Cx, rr, gg, bb);
+ qt_qimageScaleAARGB_helper(sptr + sow, xap, Cx, 1, rr, gg, bb);
r = r * (256 - yap);
g = g * (256 - yap);
@@ -745,7 +682,7 @@ static void qt_qimageScaleAARGB_down_xy(QImageScaleInfo *isi, unsigned int *dest
const unsigned int *sptr = ypoints[dyy + y] + xpoints[x];
int rx, gx, bx;
- qt_qimageScaleAARGB_helper_x(sptr, xap, Cx, rx, gx, bx);
+ qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);
int r = (rx >> 4) * yap;
int g = (gx >> 4) * yap;
@@ -754,14 +691,14 @@ static void qt_qimageScaleAARGB_down_xy(QImageScaleInfo *isi, unsigned int *dest
int j;
for (j = (1 << 14) - yap; j > Cy; j -= Cy) {
sptr += sow;
- qt_qimageScaleAARGB_helper_x(sptr, xap, Cx, rx, gx, bx);
+ qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);
r += (rx >> 4) * Cy;
g += (gx >> 4) * Cy;
b += (bx >> 4) * Cy;
}
sptr += sow;
- qt_qimageScaleAARGB_helper_x(sptr, xap, Cx, rx, gx, bx);
+ qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);
r += (rx >> 4) * j;
g += (gx >> 4) * j;
@@ -794,11 +731,11 @@ QImage qSmoothScaleImage(const QImage &src, int dw, int dh)
}
if (src.hasAlphaChannel())
- qt_qimageScaleArgb(scaleinfo, (unsigned int *)buffer.scanLine(0),
- 0, 0, 0, 0, dw, dh, dw, src.bytesPerLine() / 4);
+ qt_qimageScaleAARGBA(scaleinfo, (unsigned int *)buffer.scanLine(0),
+ 0, 0, 0, 0, dw, dh, dw, src.bytesPerLine() / 4);
else
- qt_qimageScaleRgb(scaleinfo, (unsigned int *)buffer.scanLine(0),
- 0, 0, 0, 0, dw, dh, dw, src.bytesPerLine() / 4);
+ qt_qimageScaleAARGB(scaleinfo, (unsigned int *)buffer.scanLine(0),
+ 0, 0, 0, 0, dw, dh, dw, src.bytesPerLine() / 4);
qimageFreeScaleInfo(scaleinfo);
return buffer;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-05 03:16:37 +0000