qimagescale.cpp

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1-
2-
3-
4namespace QImageScale {-
5 const unsigned int** qimageCalcYPoints(const unsigned int *src, int sw, int sh, int dh);-
6 int* qimageCalcXPoints(int sw, int dw);-
7 int* qimageCalcApoints(int s, int d, int up);-
8 QImageScaleInfo* qimageFreeScaleInfo(QImageScaleInfo *isi);-
9 QImageScaleInfo *qimageCalcScaleInfo(const QImage &img, int sw, int sh,-
10 int dw, int dh, char aa);-
11}-
12-
13using namespace QImageScale;-
14-
15-
16-
17-
18-
19const unsigned int** QImageScale::qimageCalcYPoints(const unsigned int *src,-
20 int sw, int sh, int dh)-
21{-
22 const unsigned int **p;-
23 int j = 0, rv = 0;-
24 qint64 val, inc;-
25-
26 if (dh < 0) {-
27 dh = -dh;-
28 rv = 1;-
29 }-
30 p = new const unsigned int* [dh+1];-
31-
32 int up = qAbs(dh) >= sh;-
33 val = up ? 0x8000 * sh / dh - 0x8000 : 0;-
34 inc = (((qint64)sh) << 16) / dh;-
35 for (int i = 0; i < dh; i++) {-
36 p[j++] = src + qMax(0LL, val >> 16) * sw;-
37 val += inc;-
38 }-
39 if (rv) {-
40 for (int i = dh / 2; --i >= 0; ) {-
41 const unsigned int *tmp = p[i];-
42 p[i] = p[dh - i - 1];-
43 p[dh - i - 1] = tmp;-
44 }-
45 }-
46 return(p);-
47}-
48-
49int* QImageScale::qimageCalcXPoints(int sw, int dw)-
50{-
51 int *p, j = 0, rv = 0;-
52 qint64 val, inc;-
53-
54 if (dw < 0) {-
55 dw = -dw;-
56 rv = 1;-
57 }-
58 p = new int[dw+1];-
59-
60 int up = qAbs(dw) >= sw;-
61 val = up ? 0x8000 * sw / dw - 0x8000 : 0;-
62 inc = (((qint64)sw) << 16) / dw;-
63 for (int i = 0; i < dw; i++) {-
64 p[j++] = qMax(0LL, val >> 16);-
65 val += inc;-
66 }-
67-
68 if (rv) {-
69 for (int i = dw / 2; --i >= 0; ) {-
70 int tmp = p[i];-
71 p[i] = p[dw - i - 1];-
72 p[dw - i - 1] = tmp;-
73 }-
74 }-
75 return p;-
76}-
77-
78int* QImageScale::qimageCalcApoints(int s, int d, int up)-
79{-
80 int *p, j = 0, rv = 0;-
81-
82 if (d < 0) {-
83 rv = 1;-
84 d = -d;-
85 }-
86 p = new int[d];-
87-
88 if (up) {-
89-
90 qint64 val = 0x8000 * s / d - 0x8000;-
91 qint64 inc = (((qint64)s) << 16) / d;-
92 for (int i = 0; i < d; i++) {-
93 int pos = val >> 16;-
94 if (pos < 0)-
95 p[j++] = 0;-
96 else if (pos >= (s - 1))-
97 p[j++] = 0;-
98 else-
99 p[j++] = (val >> 8) - ((val >> 8) & 0xffffff00);-
100 val += inc;-
101 }-
102 } else {-
103-
104 qint64 val = 0;-
105 qint64 inc = (((qint64)s) << 16) / d;-
106 int Cp = (((d << 14) + s - 1) / s);-
107 for (int i = 0; i < d; i++) {-
108 int ap = ((0x10000 - (val & 0xffff)) * Cp) >> 16;-
109 p[j] = ap | (Cp << 16);-
110 j++;-
111 val += inc;-
112 }-
113 }-
114 if (rv) {-
115 int tmp;-
116 for (int i = d / 2; --i >= 0; ) {-
117 tmp = p[i];-
118 p[i] = p[d - i - 1];-
119 p[d - i - 1] = tmp;-
120 }-
121 }-
122 return p;-
123}-
124-
125QImageScaleInfo* QImageScale::qimageFreeScaleInfo(QImageScaleInfo *isi)-
126{-
127 if (isi) {-
128 delete[] isi->xpoints;-
129 delete[] isi->ypoints;-
130 delete[] isi->xapoints;-
131 delete[] isi->yapoints;-
132 delete isi;-
133 }-
134 return 0;-
135}-
136-
137QImageScaleInfo* QImageScale::qimageCalcScaleInfo(const QImage &img,-
138 int sw, int sh,-
139 int dw, int dh, char aa)-
140{-
141 QImageScaleInfo *isi;-
142 int scw, sch;-
143-
144 scw = dw * qlonglong(img.width()) / sw;-
145 sch = dh * qlonglong(img.height()) / sh;-
146-
147 isi = new QImageScaleInfo;-
148 if (!isi)-
149 return 0;-
150 memset(isi, 0, sizeof(QImageScaleInfo));-
151-
152 isi->xup_yup = (qAbs(dw) >= sw) + ((qAbs(dh) >= sh) << 1);-
153-
154 isi->xpoints = qimageCalcXPoints(img.width(), scw);-
155 if (!isi->xpoints)-
156 return qimageFreeScaleInfo(isi);-
157 isi->ypoints = qimageCalcYPoints((const unsigned int *)img.scanLine(0),-
158 img.bytesPerLine() / 4, img.height(), sch);-
159 if (!isi->ypoints)-
160 return qimageFreeScaleInfo(isi);-
161 if (aa) {-
162 isi->xapoints = qimageCalcApoints(img.width(), scw, isi->xup_yup & 1);-
163 if (!isi->xapoints)-
164 return qimageFreeScaleInfo(isi);-
165 isi->yapoints = qimageCalcApoints(img.height(), sch, isi->xup_yup & 2);-
166 if (!isi->yapoints)-
167 return qimageFreeScaleInfo(isi);-
168 }-
169 return isi;-
170}-
171-
172-
173static void qt_qimageScaleAARGBA_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,-
174 int dw, int dh, int dow, int sow);-
175-
176static void qt_qimageScaleAARGBA_down_x_up_y(QImageScaleInfo *isi, unsigned int *dest,-
177 int dw, int dh, int dow, int sow);-
178-
179static void qt_qimageScaleAARGBA_down_xy(QImageScaleInfo *isi, unsigned int *dest,-
180 int dw, int dh, int dow, int sow);-
181-
182-
183template<bool RGB>-
184void qt_qimageScaleAARGBA_up_x_down_y_sse4(QImageScaleInfo *isi, unsigned int *dest,-
185 int dw, int dh, int dow, int sow);-
186template<bool RGB>-
187void qt_qimageScaleAARGBA_down_x_up_y_sse4(QImageScaleInfo *isi, unsigned int *dest,-
188 int dw, int dh, int dow, int sow);-
189template<bool RGB>-
190void qt_qimageScaleAARGBA_down_xy_sse4(QImageScaleInfo *isi, unsigned int *dest,-
191 int dw, int dh, int dow, int sow);-
192static void qt_qimageScaleAARGBA_up_xy(QImageScaleInfo *isi, unsigned int *dest,-
193 int dw, int dh, int dow, int sow)-
194{-
195 const unsigned int **ypoints = isi->ypoints;-
196 int *xpoints = isi->xpoints;-
197 int *xapoints = isi->xapoints;-
198 int *yapoints = isi->yapoints;-
199-
200-
201 for (int y = 0; y < dh
y < dhDescription
TRUEnever evaluated
FALSEnever evaluated
; y++) {		0
202-
203 const unsigned int *sptr = ypoints[y];-
204 unsigned int *dptr = dest + (y * dow);-
205 const int yap = yapoints[y];-
206 if (yap > 0
yap > 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
207 for (int x = 0; x < dw
x < dwDescription
TRUEnever evaluated
FALSEnever evaluated
; x++) {		0
208 const unsigned int *pix = sptr + xpoints[x];-
209 const int xap = xapoints[x];-
210 if (xap > 0
xap > 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
211 *
never executed: *dptr = interpolate_4_pixels(pix, pix + sow, xap, yap);
dptr = interpolate_4_pixels(pix[0], pix[1],pix[sow],, pix [sow+ 1],sow, xap, yap);
never executed: *dptr = interpolate_4_pixels(pix, pix + sow, xap, yap);
0
212 else-
213 *
never executed: *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - yap, pix[sow], yap);
dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - yap, pix[sow], yap);
never executed: *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - yap, pix[sow], yap);
0
214 dptr++;-
215 }
never executed: end of block
0
216 }
never executed: end of block
 else {		0
217 for (int x = 0; x < dw
x < dwDescription
TRUEnever evaluated
FALSEnever evaluated
; x++) {		0
218 const unsigned int *pix = sptr + xpoints[x];-
219 const int xap = xapoints[x];-
220 if (xap > 0
xap > 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
221 *
never executed: *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - xap, pix[1], xap);
dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - xap, pix[1], xap);
never executed: *dptr = INTERPOLATE_PIXEL_256(pix[0], 256 - xap, pix[1], xap);
0
222 else-
223 *
never executed: *dptr = pix[0];
dptr = pix[0];
never executed: *dptr = pix[0];
0
224 dptr++;-
225 }
never executed: end of block
0
226 }
never executed: end of block
0
227 }-
228}
never executed: end of block
0
229-
230-
231static void qt_qimageScaleAARGBA(QImageScaleInfo *isi, unsigned int *dest,-
232 int dw, int dh, int dow, int sow)-
233{-
234-
235 if (isi->xup_yup == 3
isi->xup_yup == 3Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
236 qt_qimageScaleAARGBA_up_xy(isi, dest, dw, dh, dow, sow);-
237 }
never executed: end of block
0
238-
239 else if (isi->xup_yup == 1
isi->xup_yup == 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
240-
241 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
242 qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(isi, dest, dw, dh, dow, sow);
0
243 else-
244-
245-
246-
247-
248-
249 qt_qimageScaleAARGBA_up_x_down_y(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_up_x_down_y(isi, dest, dw, dh, dow, sow);
0
250 }-
251-
252 else if (isi->xup_yup == 2
isi->xup_yup == 2Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
253-
254 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
255 qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(isi, dest, dw, dh, dow, sow);
0
256 else-
257-
258-
259-
260-
261-
262 qt_qimageScaleAARGBA_down_x_up_y(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_x_up_y(isi, dest, dw, dh, dow, sow);
0
263 }-
264-
265 else {-
266-
267 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
268 qt_qimageScaleAARGBA_down_xy_sse4<false>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_xy_sse4<false>(isi, dest, dw, dh, dow, sow);
0
269 else-
270-
271-
272-
273-
274-
275 qt_qimageScaleAARGBA_down_xy(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_xy(isi, dest, dw, dh, dow, sow);
0
276 }-
277}-
278-
279inline static void qt_qimageScaleAARGBA_helper(const unsigned int *pix, int xyap, int Cxy, int step, int &r, int &g, int &b, int &a)-
280{-
281 r = qRed(*pix) * xyap;-
282 g = qGreen(*pix) * xyap;-
283 b = qBlue(*pix) * xyap;-
284 a = qAlpha(*pix) * xyap;-
285 int j;-
286 for (j = (1 << 14) - xyap; j > Cxy; j -= Cxy) {-
287 pix += step;-
288 r += qRed(*pix) * Cxy;-
289 g += qGreen(*pix) * Cxy;-
290 b += qBlue(*pix) * Cxy;-
291 a += qAlpha(*pix) * Cxy;-
292 }-
293 pix += step;-
294 r += qRed(*pix) * j;-
295 g += qGreen(*pix) * j;-
296 b += qBlue(*pix) * j;-
297 a += qAlpha(*pix) * j;-
298}-
299-
300static void qt_qimageScaleAARGBA_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,-
301 int dw, int dh, int dow, int sow)-
302{-
303 const unsigned int **ypoints = isi->ypoints;-
304 int *xpoints = isi->xpoints;-
305 int *xapoints = isi->xapoints;-
306 int *yapoints = isi->yapoints;-
307-
308-
309 for (int y = 0; y < dh; y++) {-
310 int Cy = yapoints[y] >> 16;-
311 int yap = yapoints[y] & 0xffff;-
312-
313 unsigned int *dptr = dest + (y * dow);-
314 for (int x = 0; x < dw; x++) {-
315 const unsigned int *sptr = ypoints[y] + xpoints[x];-
316 int r, g, b, a;-
317 qt_qimageScaleAARGBA_helper(sptr, yap, Cy, sow, r, g, b, a);-
318-
319 int xap = xapoints[x];-
320 if (xap > 0) {-
321 int rr, gg, bb, aa;-
322 qt_qimageScaleAARGBA_helper(sptr + 1, yap, Cy, sow, rr, gg, bb, aa);-
323-
324 r = r * (256 - xap);-
325 g = g * (256 - xap);-
326 b = b * (256 - xap);-
327 a = a * (256 - xap);-
328 r = (r + (rr * xap)) >> 8;-
329 g = (g + (gg * xap)) >> 8;-
330 b = (b + (bb * xap)) >> 8;-
331 a = (a + (aa * xap)) >> 8;-
332 }-
333 *dptr++ = qRgba(r >> 14, g >> 14, b >> 14, a >> 14);-
334 }-
335 }-
336}-
337-
338static void qt_qimageScaleAARGBA_down_x_up_y(QImageScaleInfo *isi, unsigned int *dest,-
339 int dw, int dh, int dow, int sow)-
340{-
341 const unsigned int **ypoints = isi->ypoints;-
342 int *xpoints = isi->xpoints;-
343 int *xapoints = isi->xapoints;-
344 int *yapoints = isi->yapoints;-
345-
346-
347 for (int y = 0; y < dh; y++) {-
348 unsigned int *dptr = dest + (y * dow);-
349 for (int x = 0; x < dw; x++) {-
350 int Cx = xapoints[x] >> 16;-
351 int xap = xapoints[x] & 0xffff;-
352-
353 const unsigned int *sptr = ypoints[y] + xpoints[x];-
354 int r, g, b, a;-
355 qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, r, g, b, a);-
356-
357 int yap = yapoints[y];-
358 if (yap > 0) {-
359 int rr, gg, bb, aa;-
360 qt_qimageScaleAARGBA_helper(sptr + sow, xap, Cx, 1, rr, gg, bb, aa);-
361-
362 r = r * (256 - yap);-
363 g = g * (256 - yap);-
364 b = b * (256 - yap);-
365 a = a * (256 - yap);-
366 r = (r + (rr * yap)) >> 8;-
367 g = (g + (gg * yap)) >> 8;-
368 b = (b + (bb * yap)) >> 8;-
369 a = (a + (aa * yap)) >> 8;-
370 }-
371 *dptr = qRgba(r >> 14, g >> 14, b >> 14, a >> 14);-
372 dptr++;-
373 }-
374 }-
375}-
376-
377static void qt_qimageScaleAARGBA_down_xy(QImageScaleInfo *isi, unsigned int *dest,-
378 int dw, int dh, int dow, int sow)-
379{-
380 const unsigned int **ypoints = isi->ypoints;-
381 int *xpoints = isi->xpoints;-
382 int *xapoints = isi->xapoints;-
383 int *yapoints = isi->yapoints;-
384-
385 for (int y = 0; y < dh; y++) {-
386 int Cy = (yapoints[y]) >> 16;-
387 int yap = (yapoints[y]) & 0xffff;-
388-
389 unsigned int *dptr = dest + (y * dow);-
390 for (int x = 0; x < dw; x++) {-
391 int Cx = xapoints[x] >> 16;-
392 int xap = xapoints[x] & 0xffff;-
393-
394 const unsigned int *sptr = ypoints[y] + xpoints[x];-
395 int rx, gx, bx, ax;-
396 qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);-
397-
398 int r = ((rx>>4) * yap);-
399 int g = ((gx>>4) * yap);-
400 int b = ((bx>>4) * yap);-
401 int a = ((ax>>4) * yap);-
402-
403 int j;-
404 for (j = (1 << 14) - yap; j > Cy; j -= Cy) {-
405 sptr += sow;-
406 qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);-
407 r += ((rx>>4) * Cy);-
408 g += ((gx>>4) * Cy);-
409 b += ((bx>>4) * Cy);-
410 a += ((ax>>4) * Cy);-
411 }-
412 sptr += sow;-
413 qt_qimageScaleAARGBA_helper(sptr, xap, Cx, 1, rx, gx, bx, ax);-
414-
415 r += ((rx>>4) * j);-
416 g += ((gx>>4) * j);-
417 b += ((bx>>4) * j);-
418 a += ((ax>>4) * j);-
419-
420 *dptr = qRgba(r >> 24, g >> 24, b >> 24, a >> 24);-
421 dptr++;-
422 }-
423 }-
424}-
425-
426static void qt_qimageScaleAARGB_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,-
427 int dw, int dh, int dow, int sow);-
428-
429static void qt_qimageScaleAARGB_down_x_up_y(QImageScaleInfo *isi, unsigned int *dest,-
430 int dw, int dh, int dow, int sow);-
431-
432static void qt_qimageScaleAARGB_down_xy(QImageScaleInfo *isi, unsigned int *dest,-
433 int dw, int dh, int dow, int sow);-
434-
435-
436static void qt_qimageScaleAARGB(QImageScaleInfo *isi, unsigned int *dest,-
437 int dw, int dh, int dow, int sow)-
438{-
439-
440 if (isi->xup_yup == 3
isi->xup_yup == 3Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
441 qt_qimageScaleAARGBA_up_xy(isi, dest, dw, dh, dow, sow);-
442 }
never executed: end of block
0
443-
444 else if (isi->xup_yup == 1
isi->xup_yup == 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
445-
446 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
447 qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(isi, dest, dw, dh, dow, sow);
0
448 else-
449-
450-
451-
452-
453-
454 qt_qimageScaleAARGB_up_x_down_y(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGB_up_x_down_y(isi, dest, dw, dh, dow, sow);
0
455 }-
456-
457 else if (isi->xup_yup == 2
isi->xup_yup == 2Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
458-
459 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
460 qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(isi, dest, dw, dh, dow, sow);
0
461 else-
462-
463-
464-
465-
466-
467 qt_qimageScaleAARGB_down_x_up_y(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGB_down_x_up_y(isi, dest, dw, dh, dow, sow);
0
468 }-
469-
470 else {-
471-
472 if (((
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCompilerCpuFeatures & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCompilerCpuF...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
qCpuFeatures() & (static_cast<unsigned long long>(1ULL) << CpuFeatureSSE4_1))
(qCpuFeatures(...eatureSSE4_1))Description
TRUEnever evaluated
FALSEnever evaluated
))		0
473 qt_qimageScaleAARGBA_down_xy_sse4<true>(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGBA_down_xy_sse4<true>(isi, dest, dw, dh, dow, sow);
0
474 else-
475-
476-
477-
478-
479-
480 qt_qimageScaleAARGB_down_xy(isi, dest, dw, dh, dow, sow);
never executed: qt_qimageScaleAARGB_down_xy(isi, dest, dw, dh, dow, sow);
0
481 }-
482}-
483-
484-
485inline static void qt_qimageScaleAARGB_helper(const unsigned int *pix, int xyap, int Cxy, int step, int &r, int &g, int &b)-
486{-
487 r = qRed(*pix) * xyap;-
488 g = qGreen(*pix) * xyap;-
489 b = qBlue(*pix) * xyap;-
490 int j;-
491 for (j = (1 << 14) - xyap; j > Cxy; j -= Cxy) {-
492 pix += step;-
493 r += qRed(*pix) * Cxy;-
494 g += qGreen(*pix) * Cxy;-
495 b += qBlue(*pix) * Cxy;-
496 }-
497 pix += step;-
498 r += qRed(*pix) * j;-
499 g += qGreen(*pix) * j;-
500 b += qBlue(*pix) * j;-
501}-
502-
503static void qt_qimageScaleAARGB_up_x_down_y(QImageScaleInfo *isi, unsigned int *dest,-
504 int dw, int dh, int dow, int sow)-
505{-
506 const unsigned int **ypoints = isi->ypoints;-
507 int *xpoints = isi->xpoints;-
508 int *xapoints = isi->xapoints;-
509 int *yapoints = isi->yapoints;-
510-
511-
512 for (int y = 0; y < dh; y++) {-
513 int Cy = yapoints[y] >> 16;-
514 int yap = yapoints[y] & 0xffff;-
515-
516 unsigned int *dptr = dest + (y * dow);-
517 for (int x = 0; x < dw; x++) {-
518 const unsigned int *sptr = ypoints[y] + xpoints[x];-
519 int r, g, b;-
520 qt_qimageScaleAARGB_helper(sptr, yap, Cy, sow, r, g, b);-
521-
522 int xap = xapoints[x];-
523 if (xap > 0) {-
524 int rr, bb, gg;-
525 qt_qimageScaleAARGB_helper(sptr + 1, yap, Cy, sow, rr, gg, bb);-
526-
527 r = r * (256 - xap);-
528 g = g * (256 - xap);-
529 b = b * (256 - xap);-
530 r = (r + (rr * xap)) >> 8;-
531 g = (g + (gg * xap)) >> 8;-
532 b = (b + (bb * xap)) >> 8;-
533 }-
534 *dptr++ = qRgb(r >> 14, g >> 14, b >> 14);-
535 }-
536 }-
537}-
538-
539static void qt_qimageScaleAARGB_down_x_up_y(QImageScaleInfo *isi, unsigned int *dest,-
540 int dw, int dh, int dow, int sow)-
541{-
542 const unsigned int **ypoints = isi->ypoints;-
543 int *xpoints = isi->xpoints;-
544 int *xapoints = isi->xapoints;-
545 int *yapoints = isi->yapoints;-
546-
547-
548 for (int y = 0; y < dh; y++) {-
549 unsigned int *dptr = dest + (y * dow);-
550 for (int x = 0; x < dw; x++) {-
551 int Cx = xapoints[x] >> 16;-
552 int xap = xapoints[x] & 0xffff;-
553-
554 const unsigned int *sptr = ypoints[y] + xpoints[x];-
555 int r, g, b;-
556 qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, r, g, b);-
557-
558 int yap = yapoints[y];-
559 if (yap > 0) {-
560 int rr, bb, gg;-
561 qt_qimageScaleAARGB_helper(sptr + sow, xap, Cx, 1, rr, gg, bb);-
562-
563 r = r * (256 - yap);-
564 g = g * (256 - yap);-
565 b = b * (256 - yap);-
566 r = (r + (rr * yap)) >> 8;-
567 g = (g + (gg * yap)) >> 8;-
568 b = (b + (bb * yap)) >> 8;-
569 }-
570 *dptr++ = qRgb(r >> 14, g >> 14, b >> 14);-
571 }-
572 }-
573}-
574-
575static void qt_qimageScaleAARGB_down_xy(QImageScaleInfo *isi, unsigned int *dest,-
576 int dw, int dh, int dow, int sow)-
577{-
578 const unsigned int **ypoints = isi->ypoints;-
579 int *xpoints = isi->xpoints;-
580 int *xapoints = isi->xapoints;-
581 int *yapoints = isi->yapoints;-
582-
583 for (int y = 0; y < dh; y++) {-
584 int Cy = yapoints[y] >> 16;-
585 int yap = yapoints[y] & 0xffff;-
586-
587 unsigned int *dptr = dest + (y * dow);-
588 for (int x = 0; x < dw; x++) {-
589 int Cx = xapoints[x] >> 16;-
590 int xap = xapoints[x] & 0xffff;-
591-
592 const unsigned int *sptr = ypoints[y] + xpoints[x];-
593 int rx, gx, bx;-
594 qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);-
595-
596 int r = (rx >> 4) * yap;-
597 int g = (gx >> 4) * yap;-
598 int b = (bx >> 4) * yap;-
599-
600 int j;-
601 for (j = (1 << 14) - yap; j > Cy; j -= Cy) {-
602 sptr += sow;-
603 qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);-
604-
605 r += (rx >> 4) * Cy;-
606 g += (gx >> 4) * Cy;-
607 b += (bx >> 4) * Cy;-
608 }-
609 sptr += sow;-
610 qt_qimageScaleAARGB_helper(sptr, xap, Cx, 1, rx, gx, bx);-
611-
612 r += (rx >> 4) * j;-
613 g += (gx >> 4) * j;-
614 b += (bx >> 4) * j;-
615-
616 *dptr = qRgb(r >> 24, g >> 24, b >> 24);-
617 dptr++;-
618 }-
619 }-
620}-
621-
622QImage qSmoothScaleImage(const QImage &src, int dw, int dh)-
623{-
624 QImage buffer;-
625 if (src.isNull() || dw <= 0 || dh <= 0)-
626 return buffer;-
627-
628 int w = src.width();-
629 int h = src.height();-
630 QImageScaleInfo *scaleinfo =-
631 qimageCalcScaleInfo(src, w, h, dw, dh, true);-
632 if (!scaleinfo)-
633 return buffer;-
634-
635 buffer = QImage(dw, dh, src.format());-
636 if (buffer.isNull()) {-
637 QMessageLogger(__FILE__, 701743, __PRETTY_FUNCTION__).warning("QImage: out of memory, returning null");-
638 qimageFreeScaleInfo(scaleinfo);-
639 return QImage();-
640 }-
641-
642 if (src.hasAlphaChannel())-
643 qt_qimageScaleAARGBA(scaleinfo, (unsigned int *)buffer.scanLine(0),-
644 dw, dh, dw, src.bytesPerLine() / 4);-
645 else-
646 qt_qimageScaleAARGB(scaleinfo, (unsigned int *)buffer.scanLine(0),-
647 dw, dh, dw, src.bytesPerLine() / 4);-
648-
649 qimageFreeScaleInfo(scaleinfo);-
650 return buffer;-
651}-
652-
653-
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