source: trunk/src/gui/painting/qblendfunctions.cpp@ 561

Last change on this file since 561 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
File size: 76.2 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <qmath.h>
43#include "qdrawhelper_p.h"
44
45QT_BEGIN_NAMESPACE
46
47struct SourceOnlyAlpha
48{
49 inline uchar alpha(uchar src) const { return src; }
50 inline quint16 bytemul(quint16 spix) const { return spix; }
51};
52
53
54struct SourceAndConstAlpha
55{
56 SourceAndConstAlpha(int a) : m_alpha256(a) {
57 m_alpha255 = (m_alpha256 * 255) >> 8;
58 };
59 inline uchar alpha(uchar src) const { return (src * m_alpha256) >> 8; }
60 inline quint16 bytemul(quint16 x) const {
61 uint t = (((x & 0x07e0)*m_alpha255) >> 8) & 0x07e0;
62 t |= (((x & 0xf81f)*(m_alpha255>>2)) >> 6) & 0xf81f;
63 return t;
64 }
65 int m_alpha255;
66 int m_alpha256;
67};
68
69
70/************************************************************************
71 RGB16 (565) format target format
72 ************************************************************************/
73
74static inline quint16 convert_argb32_to_rgb16(quint32 spix)
75{
76 quint32 b = spix;
77 quint32 g = spix;
78 b >>= 8;
79 g >>= 5;
80 b &= 0x0000f800;
81 g &= 0x000007e0;
82 spix >>= 3;
83 b |= g;
84 spix &= 0x0000001f;
85 b |= spix;
86 return b;
87}
88
89struct Blend_RGB16_on_RGB16_NoAlpha {
90 inline void write(quint16 *dst, quint16 src) { *dst = src; }
91};
92
93struct Blend_RGB16_on_RGB16_ConstAlpha {
94 inline Blend_RGB16_on_RGB16_ConstAlpha(quint32 alpha) {
95 m_alpha = (alpha * 255) >> 8;
96 m_ialpha = 255 - m_alpha;
97 }
98
99 inline void write(quint16 *dst, quint16 src) {
100 *dst = BYTE_MUL_RGB16(src, m_alpha) + BYTE_MUL_RGB16(*dst, m_ialpha);
101 }
102
103 quint32 m_alpha;
104 quint32 m_ialpha;
105};
106
107struct Blend_ARGB24_on_RGB16_SourceAlpha {
108 inline void write(quint16 *dst, const qargb8565 &src) {
109 const uint alpha = src.alpha();
110 if (alpha) {
111 quint16 s = src.rawValue16();
112 if (alpha < 255)
113 s += BYTE_MUL_RGB16(*dst, 255 - alpha);
114 *dst = s;
115 }
116 }
117};
118
119struct Blend_ARGB24_on_RGB16_SourceAndConstAlpha {
120 inline Blend_ARGB24_on_RGB16_SourceAndConstAlpha(quint32 alpha) {
121 m_alpha = (alpha * 255) >> 8;
122 }
123
124 inline void write(quint16 *dst, qargb8565 src) {
125 src = src.byte_mul(src.alpha(m_alpha));
126 const uint alpha = src.alpha();
127 if (alpha) {
128 quint16 s = src.rawValue16();
129 if (alpha < 255)
130 s += BYTE_MUL_RGB16(*dst, 255 - alpha);
131 *dst = s;
132 }
133 }
134
135 quint32 m_alpha;
136};
137
138struct Blend_ARGB32_on_RGB16_SourceAlpha {
139 inline void write(quint16 *dst, quint32 src) {
140 const quint8 alpha = qAlpha(src);
141 if(alpha) {
142 quint16 s = convert_argb32_to_rgb16(src);
143 if(alpha < 255)
144 s += BYTE_MUL_RGB16(*dst, 255 - alpha);
145 *dst = s;
146 }
147 }
148};
149
150struct Blend_ARGB32_on_RGB16_SourceAndConstAlpha {
151 inline Blend_ARGB32_on_RGB16_SourceAndConstAlpha(quint32 alpha) {
152 m_alpha = (alpha * 255) >> 8;
153 }
154
155 inline void write(quint16 *dst, quint32 src) {
156 src = BYTE_MUL(src, m_alpha);
157 const quint8 alpha = qAlpha(src);
158 if(alpha) {
159 quint16 s = convert_argb32_to_rgb16(src);
160 if(alpha < 255)
161 s += BYTE_MUL_RGB16(*dst, 255 - alpha);
162 *dst = s;
163 }
164 }
165
166 quint32 m_alpha;
167};
168
169template <typename SRC, typename T>
170void qt_scale_image_16bit(uchar *destPixels, int dbpl,
171 const uchar *srcPixels, int sbpl,
172 const QRectF &targetRect,
173 const QRectF &srcRect,
174 const QRect &clip,
175 T blender)
176{
177 qreal sx = targetRect.width() / (qreal) srcRect.width();
178 qreal sy = targetRect.height() / (qreal) srcRect.height();
179
180 int ix = 0x00010000 / sx;
181 int iy = 0x00010000 / sy;
182
183// qDebug() << "scale:" << endl
184// << " - target" << targetRect << endl
185// << " - source" << srcRect << endl
186// << " - clip" << clip << endl
187// << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;
188
189 int cx1 = clip.x();
190 int cx2 = clip.x() + clip.width();
191 int cy1 = clip.top();
192 int cy2 = clip.y() + clip.height();
193
194 int tx1 = qRound(targetRect.left());
195 int tx2 = qRound(targetRect.right());
196 int ty1 = qRound(targetRect.top());
197 int ty2 = qRound(targetRect.bottom());
198
199 if (tx2 < tx1)
200 qSwap(tx2, tx1);
201
202 if (ty2 < ty1)
203 qSwap(ty2, ty1);
204
205 if (tx1 < cx1)
206 tx1 = cx1;
207
208 if (tx2 >= cx2)
209 tx2 = cx2;
210
211 if (tx1 >= tx2)
212 return;
213
214 if (ty1 < cy1)
215 ty1 = cy1;
216
217 if (ty2 >= cy2)
218 ty2 = cy2;
219
220 if (ty1 >= ty2)
221 return;
222
223 int h = ty2 - ty1;
224 int w = tx2 - tx1;
225
226
227 quint32 basex;
228 quint32 srcy;
229
230 if (sx < 0) {
231 int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
232 basex = quint32(srcRect.right() * 65536) + dstx;
233 } else {
234 int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
235 basex = quint32(srcRect.left() * 65536) + dstx;
236 }
237 if (sy < 0) {
238 int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
239 srcy = quint32(srcRect.bottom() * 65536) + dsty;
240 } else {
241 int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
242 srcy = quint32(srcRect.top() * 65536) + dsty;
243 }
244
245 quint16 *dst = ((quint16 *) (destPixels + ty1 * dbpl)) + tx1;
246
247 while (h--) {
248 const SRC *src = (const SRC *) (srcPixels + (srcy >> 16) * sbpl);
249 int srcx = basex;
250 for (int x=0; x<w; ++x) {
251 blender.write(&dst[x], src[srcx >> 16]);
252 srcx += ix;
253 }
254 dst = (quint16 *)(((uchar *) dst) + dbpl);
255 srcy += iy;
256 }
257}
258
259void qt_scale_image_rgb16_on_rgb16(uchar *destPixels, int dbpl,
260 const uchar *srcPixels, int sbpl,
261 const QRectF &targetRect,
262 const QRectF &sourceRect,
263 const QRect &clip,
264 int const_alpha)
265{
266#ifdef QT_DEBUG_DRAW
267 printf("qt_scale_rgb16_on_rgb16: dst=(%p, %d), src=(%p, %d), target=(%d, %d), [%d x %d], src=(%d, %d) [%d x %d] alpha=%d\n",
268 destPixels, dbpl, srcPixels, sbpl,
269 targetRect.x(), targetRect.y(), targetRect.width(), targetRect.height(),
270 sourceRect.x(), sourceRect.y(), sourceRect.width(), sourceRect.height(),
271 const_alpha);
272#endif
273 if (const_alpha == 256) {
274 Blend_RGB16_on_RGB16_NoAlpha noAlpha;
275 qt_scale_image_16bit<quint16>(destPixels, dbpl, srcPixels, sbpl,
276 targetRect, sourceRect, clip, noAlpha);
277 } else {
278 Blend_RGB16_on_RGB16_ConstAlpha constAlpha(const_alpha);
279 qt_scale_image_16bit<quint16>(destPixels, dbpl, srcPixels, sbpl,
280 targetRect, sourceRect, clip, constAlpha);
281 }
282}
283
284void qt_scale_image_argb24_on_rgb16(uchar *destPixels, int dbpl,
285 const uchar *srcPixels, int sbpl,
286 const QRectF &targetRect,
287 const QRectF &sourceRect,
288 const QRect &clip,
289 int const_alpha)
290{
291#ifdef QT_DEBUG_DRAW
292 printf("qt_scale_argb24_on_rgb16: dst=(%p, %d), src=(%p, %d), target=(%d, %d), [%d x %d], src=(%d, %d) [%d x %d] alpha=%d\n",
293 destPixels, dbpl, srcPixels, sbpl,
294 targetRect.x(), targetRect.y(), targetRect.width(), targetRect.height(),
295 sourceRect.x(), sourceRect.y(), sourceRect.width(), sourceRect.height(),
296 const_alpha);
297#endif
298 if (const_alpha == 256) {
299 Blend_ARGB24_on_RGB16_SourceAlpha noAlpha;
300 qt_scale_image_16bit<qargb8565>(destPixels, dbpl, srcPixels, sbpl,
301 targetRect, sourceRect, clip, noAlpha);
302 } else {
303 Blend_ARGB24_on_RGB16_SourceAndConstAlpha constAlpha(const_alpha);
304 qt_scale_image_16bit<qargb8565>(destPixels, dbpl, srcPixels, sbpl,
305 targetRect, sourceRect, clip, constAlpha);
306 }
307}
308
309
310void qt_scale_image_argb32_on_rgb16(uchar *destPixels, int dbpl,
311 const uchar *srcPixels, int sbpl,
312 const QRectF &targetRect,
313 const QRectF &sourceRect,
314 const QRect &clip,
315 int const_alpha)
316{
317#ifdef QT_DEBUG_DRAW
318 printf("qt_scale_argb32_on_rgb16: dst=(%p, %d), src=(%p, %d), target=(%d, %d), [%d x %d], src=(%d, %d) [%d x %d] alpha=%d\n",
319 destPixels, dbpl, srcPixels, sbpl,
320 targetRect.x(), targetRect.y(), targetRect.width(), targetRect.height(),
321 sourceRect.x(), sourceRect.y(), sourceRect.width(), sourceRect.height(),
322 const_alpha);
323#endif
324 if (const_alpha == 256) {
325 Blend_ARGB32_on_RGB16_SourceAlpha noAlpha;
326 qt_scale_image_16bit<quint32>(destPixels, dbpl, srcPixels, sbpl,
327 targetRect, sourceRect, clip, noAlpha);
328 } else {
329 Blend_ARGB32_on_RGB16_SourceAndConstAlpha constAlpha(const_alpha);
330 qt_scale_image_16bit<quint32>(destPixels, dbpl, srcPixels, sbpl,
331 targetRect, sourceRect, clip, constAlpha);
332 }
333}
334
335static void qt_blend_rgb16_on_rgb16(uchar *dst, int dbpl,
336 const uchar *src, int sbpl,
337 int w, int h,
338 int const_alpha)
339{
340#ifdef QT_DEBUG_DRAW
341 printf("qt_blend_rgb16_on_rgb16: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
342 dst, dbpl, src, sbpl, w, h, const_alpha);
343#endif
344
345 if (const_alpha == 256) {
346 if (w <= 64) {
347 while (h--) {
348 QT_MEMCPY_USHORT(dst, src, w);
349 dst += dbpl;
350 src += sbpl;
351 }
352 } else {
353 int length = w << 1;
354 while (h--) {
355 memcpy(dst, src, length);
356 dst += dbpl;
357 src += sbpl;
358 }
359 }
360 } else if (const_alpha != 0) {
361 SourceAndConstAlpha alpha(const_alpha); // expects the 0-256 range
362 quint16 *d = (quint16 *) dst;
363 const quint16 *s = (const quint16 *) src;
364 quint8 a = (255 * const_alpha) >> 8;
365 quint8 ia = 255 - a;
366 while (h--) {
367 for (int x=0; x<w; ++x) {
368 d[x] = BYTE_MUL_RGB16(s[x], a) + BYTE_MUL_RGB16(d[x], ia);
369 }
370 d = (quint16 *)(((uchar *) d) + dbpl);
371 s = (const quint16 *)(((const uchar *) s) + sbpl);
372 }
373 }
374}
375
376
377template <typename T> void qt_blend_argb24_on_rgb16(uchar *destPixels, int dbpl,
378 const uchar *srcPixels, int sbpl,
379 int w, int h, const T &alphaFunc)
380{
381 int srcOffset = w*3;
382 int dstJPL = dbpl / 2;
383 quint16 *dst = (quint16 *) destPixels;
384 int dstExtraStride = dstJPL - w;
385
386 for (int y=0; y<h; ++y) {
387 const uchar *src = srcPixels + y * sbpl;
388 const uchar *srcEnd = src + srcOffset;
389 while (src < srcEnd) {
390#if defined(QT_ARCH_ARM) || defined(QT_ARCH_POWERPC) || defined(QT_ARCH_SH) || defined(QT_ARCH_AVR32) || (defined(QT_ARCH_WINDOWSCE) && !defined(_X86_)) || (defined(QT_ARCH_SPARC) && defined(Q_CC_GNU))
391 // non-16-bit aligned memory access is not possible on PowerPC,
392 // ARM <v6 (QT_ARCH_ARMV6) & SH & AVR32 & SPARC w/GCC
393 quint16 spix = (quint16(src[2])<<8) + src[1];
394#else
395 quint16 spix = *(quint16 *) (src + 1);
396#endif
397 uchar alpha = alphaFunc.alpha(*src);
398
399 if (alpha == 255) {
400 *dst = spix;
401 } else if (alpha != 0) {
402 quint16 dpix = *dst;
403 quint32 sia = 255 - alpha;
404
405 quint16 dr = (dpix & 0x0000f800);
406 quint16 dg = (dpix & 0x000007e0);
407 quint16 db = (dpix & 0x0000001f);
408
409 quint32 siar = dr * sia;
410 quint32 siag = dg * sia;
411 quint32 siab = db * sia;
412
413 quint32 rr = ((siar + (siar>>8) + (0x80 << 8)) >> 8) & 0xf800;
414 quint32 rg = ((siag + (siag>>8) + (0x80 << 3)) >> 8) & 0x07e0;
415 quint32 rb = ((siab + (siab>>8) + (0x80 >> 3)) >> 8) & 0x001f;
416
417 *dst = alphaFunc.bytemul(spix) + rr + rg + rb;
418 }
419
420 ++dst;
421 src += 3;
422 }
423 dst += dstExtraStride;
424 }
425
426}
427
428static void qt_blend_argb24_on_rgb16(uchar *destPixels, int dbpl,
429 const uchar *srcPixels, int sbpl,
430 int w, int h,
431 int const_alpha)
432{
433#ifdef QT_DEBUG_DRAW
434 printf("qt_blend_argb24_on_rgb16: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
435 destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
436#endif
437
438 if (const_alpha != 256) {
439 SourceAndConstAlpha alphaFunc(const_alpha);
440 qt_blend_argb24_on_rgb16(destPixels, dbpl, srcPixels, sbpl, w, h, alphaFunc);
441 } else {
442 SourceOnlyAlpha alphaFunc;
443 qt_blend_argb24_on_rgb16(destPixels, dbpl, srcPixels, sbpl, w, h, alphaFunc);
444 }
445}
446
447
448
449
450static void qt_blend_argb32_on_rgb16_const_alpha(uchar *destPixels, int dbpl,
451 const uchar *srcPixels, int sbpl,
452 int w, int h,
453 int const_alpha)
454{
455 quint16 *dst = (quint16 *) destPixels;
456 const quint32 *src = (const quint32 *) srcPixels;
457
458 const_alpha = (const_alpha * 255) >> 8;
459 for (int y=0; y<h; ++y) {
460 for (int i = 0; i < w; ++i) {
461 uint s = src[i];
462 s = BYTE_MUL(s, const_alpha);
463 int alpha = qAlpha(s);
464 s = convert_argb32_to_rgb16(s);
465 s += BYTE_MUL_RGB16(dst[i], 255 - alpha);
466 dst[i] = s;
467 }
468 dst = (quint16 *)(((uchar *) dst) + dbpl);
469 src = (const quint32 *)(((const uchar *) src) + sbpl);
470 }
471}
472
473static void qt_blend_argb32_on_rgb16(uchar *destPixels, int dbpl,
474 const uchar *srcPixels, int sbpl,
475 int w, int h,
476 int const_alpha)
477{
478 if (const_alpha != 256) {
479 qt_blend_argb32_on_rgb16_const_alpha(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
480 return;
481 }
482
483 quint16 *dst = (quint16 *) destPixels;
484 quint32 *src = (quint32 *) srcPixels;
485
486 for (int y=0; y<h; ++y) {
487 for (int x=0; x<w; ++x) {
488
489 quint32 spix = src[x];
490 quint32 alpha = spix >> 24;
491
492 if (alpha == 255) {
493 dst[x] = convert_argb32_to_rgb16(spix);
494 } else if (alpha != 0) {
495 quint32 dpix = dst[x];
496
497 quint32 sia = 255 - alpha;
498
499 quint32 sr = (spix >> 8) & 0xf800;
500 quint32 sg = (spix >> 5) & 0x07e0;
501 quint32 sb = (spix >> 3) & 0x001f;
502
503 quint32 dr = (dpix & 0x0000f800);
504 quint32 dg = (dpix & 0x000007e0);
505 quint32 db = (dpix & 0x0000001f);
506
507 quint32 siar = dr * sia;
508 quint32 siag = dg * sia;
509 quint32 siab = db * sia;
510
511 quint32 rr = sr + ((siar + (siar>>8) + (0x80 << 8)) >> 8);
512 quint32 rg = sg + ((siag + (siag>>8) + (0x80 << 3)) >> 8);
513 quint32 rb = sb + ((siab + (siab>>8) + (0x80 >> 3)) >> 8);
514
515 dst[x] = (rr & 0xf800)
516 | (rg & 0x07e0)
517 | (rb);
518 }
519 }
520 dst = (quint16 *) (((uchar *) dst) + dbpl);
521 src = (quint32 *) (((uchar *) src) + sbpl);
522 }
523}
524
525
526static void qt_blend_rgb32_on_rgb16(uchar *destPixels, int dbpl,
527 const uchar *srcPixels, int sbpl,
528 int w, int h,
529 int const_alpha)
530{
531#ifdef QT_DEBUG_DRAW
532 printf("qt_blend_rgb32_on_rgb16: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
533 destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
534#endif
535
536 if (const_alpha != 256) {
537 qt_blend_argb32_on_rgb16(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
538 return;
539 }
540
541 const quint32 *src = (const quint32 *) srcPixels;
542 int srcExtraStride = (sbpl >> 2) - w;
543
544 int dstJPL = dbpl / 2;
545
546 quint16 *dst = (quint16 *) destPixels;
547 quint16 *dstEnd = dst + dstJPL * h;
548
549 int dstExtraStride = dstJPL - w;
550
551 while (dst < dstEnd) {
552 const quint32 *srcEnd = src + w;
553 while (src < srcEnd) {
554 *dst = convert_argb32_to_rgb16(*src);
555 ++dst;
556 ++src;
557 }
558 dst += dstExtraStride;
559 src += srcExtraStride;
560 }
561}
562
563
564
565/************************************************************************
566 RGB32 (-888) format target format
567 ************************************************************************/
568
569static void qt_blend_argb32_on_argb32(uchar *destPixels, int dbpl,
570 const uchar *srcPixels, int sbpl,
571 int w, int h,
572 int const_alpha)
573{
574#ifdef QT_DEBUG_DRAW
575 fprintf(stdout, "qt_blend_argb32_on_argb32: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
576 destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
577 fflush(stdout);
578#endif
579
580 const uint *src = (const uint *) srcPixels;
581 uint *dst = (uint *) destPixels;
582 if (const_alpha == 256) {
583 for (int y=0; y<h; ++y) {
584 for (int x=0; x<w; ++x) {
585 uint s = src[x];
586 if (s >= 0xff000000)
587 dst[x] = s;
588 else if (s != 0)
589 dst[x] = s + BYTE_MUL(dst[x], qAlpha(~s));
590 }
591 dst = (quint32 *)(((uchar *) dst) + dbpl);
592 src = (const quint32 *)(((const uchar *) src) + sbpl);
593 }
594 } else if (const_alpha != 0) {
595 const_alpha = (const_alpha * 255) >> 8;
596 for (int y=0; y<h; ++y) {
597 for (int x=0; x<w; ++x) {
598 uint s = BYTE_MUL(src[x], const_alpha);
599 dst[x] = s + BYTE_MUL(dst[x], qAlpha(~s));
600 }
601 dst = (quint32 *)(((uchar *) dst) + dbpl);
602 src = (const quint32 *)(((const uchar *) src) + sbpl);
603 }
604 }
605}
606
607
608void qt_blend_rgb32_on_rgb32(uchar *destPixels, int dbpl,
609 const uchar *srcPixels, int sbpl,
610 int w, int h,
611 int const_alpha)
612{
613#ifdef QT_DEBUG_DRAW
614 fprintf(stdout, "qt_blend_rgb32_on_rgb32: dst=(%p, %d), src=(%p, %d), dim=(%d, %d) alpha=%d\n",
615 destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
616 fflush(stdout);
617#endif
618
619 if (const_alpha != 256) {
620 qt_blend_argb32_on_argb32(destPixels, dbpl, srcPixels, sbpl, w, h, const_alpha);
621 return;
622 }
623
624 const uint *src = (const uint *) srcPixels;
625 uint *dst = (uint *) destPixels;
626 if (w <= 64) {
627 for (int y=0; y<h; ++y) {
628 qt_memconvert(dst, src, w);
629 dst = (quint32 *)(((uchar *) dst) + dbpl);
630 src = (const quint32 *)(((const uchar *) src) + sbpl);
631 }
632 } else {
633 int len = w * 4;
634 for (int y=0; y<h; ++y) {
635 memcpy(dst, src, len);
636 dst = (quint32 *)(((uchar *) dst) + dbpl);
637 src = (const quint32 *)(((const uchar *) src) + sbpl);
638 }
639 }
640}
641
642
643
644struct Blend_RGB32_on_RGB32_NoAlpha {
645 inline void write(quint32 *dst, quint32 src) { *dst = src; }
646};
647
648struct Blend_RGB32_on_RGB32_ConstAlpha {
649 inline Blend_RGB32_on_RGB32_ConstAlpha(quint32 alpha) {
650 m_alpha = (alpha * 255) >> 8;
651 m_ialpha = 255 - m_alpha;
652 }
653
654 inline void write(quint32 *dst, quint32 src) {
655 *dst = BYTE_MUL(src, m_alpha) + BYTE_MUL(*dst, m_ialpha);
656 }
657
658 quint32 m_alpha;
659 quint32 m_ialpha;
660};
661
662struct Blend_ARGB32_on_ARGB32_SourceAlpha {
663 inline void write(quint32 *dst, quint32 src) {
664 *dst = src + BYTE_MUL(*dst, qAlpha(~src));
665 }
666};
667
668struct Blend_ARGB32_on_ARGB32_SourceAndConstAlpha {
669 inline Blend_ARGB32_on_ARGB32_SourceAndConstAlpha(quint32 alpha) {
670 m_alpha = (alpha * 255) >> 8;
671 m_ialpha = 255 - m_alpha;
672 }
673
674 inline void write(quint32 *dst, quint32 src) {
675 src = BYTE_MUL(src, m_alpha);
676 *dst = src + BYTE_MUL(*dst, qAlpha(~src));
677 }
678
679 quint32 m_alpha;
680 quint32 m_ialpha;
681};
682
683template <typename T> void qt_scale_image_32bit(uchar *destPixels, int dbpl,
684 const uchar *srcPixels, int sbpl,
685 const QRectF &targetRect,
686 const QRectF &srcRect,
687 const QRect &clip,
688 T blender)
689{
690 qreal sx = targetRect.width() / (qreal) srcRect.width();
691 qreal sy = targetRect.height() / (qreal) srcRect.height();
692
693 int ix = 0x00010000 / sx;
694 int iy = 0x00010000 / sy;
695
696// qDebug() << "scale:" << endl
697// << " - target" << targetRect << endl
698// << " - source" << srcRect << endl
699// << " - clip" << clip << endl
700// << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;
701
702 int cx1 = clip.x();
703 int cx2 = clip.x() + clip.width();
704 int cy1 = clip.top();
705 int cy2 = clip.y() + clip.height();
706
707 int tx1 = qRound(targetRect.left());
708 int tx2 = qRound(targetRect.right());
709 int ty1 = qRound(targetRect.top());
710 int ty2 = qRound(targetRect.bottom());
711
712 if (tx2 < tx1)
713 qSwap(tx2, tx1);
714
715 if (ty2 < ty1)
716 qSwap(ty2, ty1);
717
718 if (tx1 < cx1)
719 tx1 = cx1;
720
721 if (tx2 >= cx2)
722 tx2 = cx2;
723
724 if (tx1 >= tx2)
725 return;
726
727 if (ty1 < cy1)
728 ty1 = cy1;
729
730 if (ty2 >= cy2)
731 ty2 = cy2;
732
733 if (ty1 >= ty2)
734 return;
735
736 int h = ty2 - ty1;
737 int w = tx2 - tx1;
738
739 quint32 basex;
740 quint32 srcy;
741
742 if (sx < 0) {
743 int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
744 basex = quint32(srcRect.right() * 65536) + dstx;
745 } else {
746 int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
747 basex = quint32(srcRect.left() * 65536) + dstx;
748 }
749 if (sy < 0) {
750 int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
751 srcy = quint32(srcRect.bottom() * 65536) + dsty;
752 } else {
753 int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
754 srcy = quint32(srcRect.top() * 65536) + dsty;
755 }
756
757 quint32 *dst = ((quint32 *) (destPixels + ty1 * dbpl)) + tx1;
758
759 while (h--) {
760 const uint *src = (const quint32 *) (srcPixels + (srcy >> 16) * sbpl);
761 int srcx = basex;
762 for (int x=0; x<w; ++x) {
763 blender.write(&dst[x], src[srcx >> 16]);
764 srcx += ix;
765 }
766 dst = (quint32 *)(((uchar *) dst) + dbpl);
767 srcy += iy;
768 }
769}
770
771void qt_scale_image_rgb32_on_rgb32(uchar *destPixels, int dbpl,
772 const uchar *srcPixels, int sbpl,
773 const QRectF &targetRect,
774 const QRectF &sourceRect,
775 const QRect &clip,
776 int const_alpha)
777{
778#ifdef QT_DEBUG_DRAW
779 printf("qt_scale_rgb32_on_rgb32: dst=(%p, %d), src=(%p, %d), target=(%d, %d), [%d x %d], src=(%d, %d) [%d x %d] alpha=%d\n",
780 destPixels, dbpl, srcPixels, sbpl,
781 targetRect.x(), targetRect.y(), targetRect.width(), targetRect.height(),
782 sourceRect.x(), sourceRect.y(), sourceRect.width(), sourceRect.height(),
783 const_alpha);
784#endif
785 if (const_alpha == 256) {
786 Blend_RGB32_on_RGB32_NoAlpha noAlpha;
787 qt_scale_image_32bit(destPixels, dbpl, srcPixels, sbpl,
788 targetRect, sourceRect, clip, noAlpha);
789 } else {
790 Blend_RGB32_on_RGB32_ConstAlpha constAlpha(const_alpha);
791 qt_scale_image_32bit(destPixels, dbpl, srcPixels, sbpl,
792 targetRect, sourceRect, clip, constAlpha);
793 }
794}
795
796void qt_scale_image_argb32_on_argb32(uchar *destPixels, int dbpl,
797 const uchar *srcPixels, int sbpl,
798 const QRectF &targetRect,
799 const QRectF &sourceRect,
800 const QRect &clip,
801 int const_alpha)
802{
803#ifdef QT_DEBUG_DRAW
804 printf("qt_scale_argb32_on_argb32: dst=(%p, %d), src=(%p, %d), target=(%d, %d), [%d x %d], src=(%d, %d) [%d x %d] alpha=%d\n",
805 destPixels, dbpl, srcPixels, sbpl,
806 targetRect.x(), targetRect.y(), targetRect.width(), targetRect.height(),
807 sourceRect.x(), sourceRect.y(), sourceRect.width(), sourceRect.height(),
808 const_alpha);
809#endif
810 if (const_alpha == 256) {
811 Blend_ARGB32_on_ARGB32_SourceAlpha sourceAlpha;
812 qt_scale_image_32bit(destPixels, dbpl, srcPixels, sbpl,
813 targetRect, sourceRect, clip, sourceAlpha);
814 } else {
815 Blend_ARGB32_on_ARGB32_SourceAndConstAlpha constAlpha(const_alpha);
816 qt_scale_image_32bit(destPixels, dbpl, srcPixels, sbpl,
817 targetRect, sourceRect, clip, constAlpha);
818 }
819}
820
821struct QTransformImageVertex
822{
823 qreal x, y, u, v; // destination coordinates (x, y) and source coordinates (u, v)
824};
825
826template <class SrcT, class DestT, class Blender>
827void qt_transform_image_rasterize(DestT *destPixels, int dbpl,
828 const SrcT *srcPixels, int sbpl,
829 const QTransformImageVertex &topLeft, const QTransformImageVertex &bottomLeft,
830 const QTransformImageVertex &topRight, const QTransformImageVertex &bottomRight,
831 const QRect &sourceRect,
832 const QRect &clip,
833 qreal topY, qreal bottomY,
834 int dudx, int dvdx, int dudy, int dvdy, int u0, int v0,
835 Blender blender)
836{
837 int fromY = qMax(qRound(topY), clip.top());
838 int toY = qMin(qRound(bottomY), clip.top() + clip.height());
839 if (fromY >= toY)
840 return;
841
842 qreal leftSlope = (bottomLeft.x - topLeft.x) / (bottomLeft.y - topLeft.y);
843 qreal rightSlope = (bottomRight.x - topRight.x) / (bottomRight.y - topRight.y);
844 int dx_l = int(leftSlope * 0x10000);
845 int dx_r = int(rightSlope * 0x10000);
846 int x_l = int((topLeft.x + (0.5 + fromY - topLeft.y) * leftSlope + 0.5) * 0x10000);
847 int x_r = int((topRight.x + (0.5 + fromY - topRight.y) * rightSlope + 0.5) * 0x10000);
848
849 int fromX, toX, x1, x2, u, v, i, ii;
850 DestT *line;
851 for (int y = fromY; y < toY; ++y) {
852 line = reinterpret_cast<DestT *>(reinterpret_cast<uchar *>(destPixels) + y * dbpl);
853
854 fromX = qMax(x_l >> 16, clip.left());
855 toX = qMin(x_r >> 16, clip.left() + clip.width());
856 if (fromX < toX) {
857 // Because of rounding, we can get source coordinates outside the source image.
858 // Clamp these coordinates to the source rect to avoid segmentation fault and
859 // garbage on the screen.
860
861 // Find the first pixel on the current scan line where the source coordinates are within the source rect.
862 x1 = fromX;
863 u = x1 * dudx + y * dudy + u0;
864 v = x1 * dvdx + y * dvdy + v0;
865 for (; x1 < toX; ++x1) {
866 int uu = u >> 16;
867 int vv = v >> 16;
868 if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()
869 && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {
870 break;
871 }
872 u += dudx;
873 v += dvdx;
874 }
875
876 // Find the last pixel on the current scan line where the source coordinates are within the source rect.
877 x2 = toX;
878 u = (x2 - 1) * dudx + y * dudy + u0;
879 v = (x2 - 1) * dvdx + y * dvdy + v0;
880 for (; x2 > x1; --x2) {
881 int uu = u >> 16;
882 int vv = v >> 16;
883 if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()
884 && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {
885 break;
886 }
887 u -= dudx;
888 v -= dvdx;
889 }
890
891 // Set up values at the beginning of the scan line.
892 u = fromX * dudx + y * dudy + u0;
893 v = fromX * dvdx + y * dvdy + v0;
894 line += fromX;
895
896 // Beginning of the scan line, with per-pixel checks.
897 i = x1 - fromX;
898 while (i) {
899 int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);
900 int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);
901 blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);
902 u += dudx;
903 v += dvdx;
904 ++line;
905 --i;
906 }
907
908 // Middle of the scan line, without checks.
909 // Manual loop unrolling.
910 i = x2 - x1;
911 ii = i >> 3;
912 while (ii) {
913 blender.write(&line[0], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
914 blender.write(&line[1], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
915 blender.write(&line[2], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
916 blender.write(&line[3], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
917 blender.write(&line[4], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
918 blender.write(&line[5], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
919 blender.write(&line[6], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
920 blender.write(&line[7], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
921 line += 8;
922 --ii;
923 }
924 switch (i & 7) {
925 case 7: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
926 case 6: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
927 case 5: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
928 case 4: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
929 case 3: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
930 case 2: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
931 case 1: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
932 }
933
934 // End of the scan line, with per-pixel checks.
935 i = toX - x2;
936 while (i) {
937 int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);
938 int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);
939 blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);
940 u += dudx;
941 v += dvdx;
942 ++line;
943 --i;
944 }
945 }
946 x_l += dx_l;
947 x_r += dx_r;
948 }
949}
950
951template <class SrcT, class DestT, class Blender>
952void qt_transform_image(DestT *destPixels, int dbpl,
953 const SrcT *srcPixels, int sbpl,
954 const QRectF &targetRect,
955 const QRectF &sourceRect,
956 const QRect &clip,
957 const QTransform &targetRectTransform,
958 Blender blender)
959{
960 enum Corner
961 {
962 TopLeft,
963 TopRight,
964 BottomRight,
965 BottomLeft
966 };
967
968 // map source rectangle to destination.
969 QTransformImageVertex v[4];
970 v[TopLeft].u = v[BottomLeft].u = sourceRect.left();
971 v[TopLeft].v = v[TopRight].v = sourceRect.top();
972 v[TopRight].u = v[BottomRight].u = sourceRect.right();
973 v[BottomLeft].v = v[BottomRight].v = sourceRect.bottom();
974 targetRectTransform.map(targetRect.left(), targetRect.top(), &v[TopLeft].x, &v[TopLeft].y);
975 targetRectTransform.map(targetRect.right(), targetRect.top(), &v[TopRight].x, &v[TopRight].y);
976 targetRectTransform.map(targetRect.left(), targetRect.bottom(), &v[BottomLeft].x, &v[BottomLeft].y);
977 targetRectTransform.map(targetRect.right(), targetRect.bottom(), &v[BottomRight].x, &v[BottomRight].y);
978
979 // find topmost vertex.
980 int topmost = 0;
981 for (int i = 1; i < 4; ++i) {
982 if (v[i].y < v[topmost].y)
983 topmost = i;
984 }
985 // rearrange array such that topmost vertex is at index 0.
986 switch (topmost) {
987 case 1:
988 {
989 QTransformImageVertex t = v[0];
990 for (int i = 0; i < 3; ++i)
991 v[i] = v[i+1];
992 v[3] = t;
993 }
994 break;
995 case 2:
996 qSwap(v[0], v[2]);
997 qSwap(v[1], v[3]);
998 break;
999 case 3:
1000 {
1001 QTransformImageVertex t = v[3];
1002 for (int i = 3; i > 0; --i)
1003 v[i] = v[i-1];
1004 v[0] = t;
1005 }
1006 break;
1007 }
1008
1009 // if necessary, swap vertex 1 and 3 such that 1 is to the left of 3.
1010 qreal dx1 = v[1].x - v[0].x;
1011 qreal dy1 = v[1].y - v[0].y;
1012 qreal dx2 = v[3].x - v[0].x;
1013 qreal dy2 = v[3].y - v[0].y;
1014 if (dx1 * dy2 - dx2 * dy1 > 0)
1015 qSwap(v[1], v[3]);
1016
1017 QTransformImageVertex u = {v[1].x - v[0].x, v[1].y - v[0].y, v[1].u - v[0].u, v[1].v - v[0].v};
1018 QTransformImageVertex w = {v[2].x - v[0].x, v[2].y - v[0].y, v[2].u - v[0].u, v[2].v - v[0].v};
1019
1020 qreal det = u.x * w.y - u.y * w.x;
1021 if (det == 0)
1022 return;
1023
1024 qreal invDet = 1.0 / det;
1025 qreal m11, m12, m21, m22, mdx, mdy;
1026
1027 m11 = (u.u * w.y - u.y * w.u) * invDet;
1028 m12 = (u.x * w.u - u.u * w.x) * invDet;
1029 m21 = (u.v * w.y - u.y * w.v) * invDet;
1030 m22 = (u.x * w.v - u.v * w.x) * invDet;
1031 mdx = v[0].u - m11 * v[0].x - m12 * v[0].y;
1032 mdy = v[0].v - m21 * v[0].x - m22 * v[0].y;
1033
1034 int dudx = int(m11 * 0x10000);
1035 int dvdx = int(m21 * 0x10000);
1036 int dudy = int(m12 * 0x10000);
1037 int dvdy = int(m22 * 0x10000);
1038 int u0 = qCeil((0.5 * m11 + 0.5 * m12 + mdx) * 0x10000) - 1;
1039 int v0 = qCeil((0.5 * m21 + 0.5 * m22 + mdy) * 0x10000) - 1;
1040
1041 int x1 = qFloor(sourceRect.left());
1042 int y1 = qFloor(sourceRect.top());
1043 int x2 = qCeil(sourceRect.right());
1044 int y2 = qCeil(sourceRect.bottom());
1045 QRect sourceRectI(x1, y1, x2 - x1, y2 - y1);
1046
1047 // rasterize trapezoids.
1048 if (v[1].y < v[3].y) {
1049 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[0], v[3], sourceRectI, clip, v[0].y, v[1].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1050 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[0], v[3], sourceRectI, clip, v[1].y, v[3].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1051 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[3], v[2], sourceRectI, clip, v[3].y, v[2].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1052 } else {
1053 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[0], v[3], sourceRectI, clip, v[0].y, v[3].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1054 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[3], v[2], sourceRectI, clip, v[3].y, v[1].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1055 qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[3], v[2], sourceRectI, clip, v[1].y, v[2].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
1056 }
1057}
1058
1059void qt_transform_image_rgb16_on_rgb16(uchar *destPixels, int dbpl,
1060 const uchar *srcPixels, int sbpl,
1061 const QRectF &targetRect,
1062 const QRectF &sourceRect,
1063 const QRect &clip,
1064 const QTransform &targetRectTransform,
1065 int const_alpha)
1066{
1067 if (const_alpha == 256) {
1068 Blend_RGB16_on_RGB16_NoAlpha noAlpha;
1069 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1070 reinterpret_cast<const quint16 *>(srcPixels), sbpl,
1071 targetRect, sourceRect, clip, targetRectTransform, noAlpha);
1072 } else {
1073 Blend_RGB16_on_RGB16_ConstAlpha constAlpha(const_alpha);
1074 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1075 reinterpret_cast<const quint16 *>(srcPixels), sbpl,
1076 targetRect, sourceRect, clip, targetRectTransform, constAlpha);
1077 }
1078}
1079
1080void qt_transform_image_argb24_on_rgb16(uchar *destPixels, int dbpl,
1081 const uchar *srcPixels, int sbpl,
1082 const QRectF &targetRect,
1083 const QRectF &sourceRect,
1084 const QRect &clip,
1085 const QTransform &targetRectTransform,
1086 int const_alpha)
1087{
1088 if (const_alpha == 256) {
1089 Blend_ARGB24_on_RGB16_SourceAlpha noAlpha;
1090 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1091 reinterpret_cast<const qargb8565 *>(srcPixels), sbpl,
1092 targetRect, sourceRect, clip, targetRectTransform, noAlpha);
1093 } else {
1094 Blend_ARGB24_on_RGB16_SourceAndConstAlpha constAlpha(const_alpha);
1095 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1096 reinterpret_cast<const qargb8565 *>(srcPixels), sbpl,
1097 targetRect, sourceRect, clip, targetRectTransform, constAlpha);
1098 }
1099}
1100
1101
1102void qt_transform_image_argb32_on_rgb16(uchar *destPixels, int dbpl,
1103 const uchar *srcPixels, int sbpl,
1104 const QRectF &targetRect,
1105 const QRectF &sourceRect,
1106 const QRect &clip,
1107 const QTransform &targetRectTransform,
1108 int const_alpha)
1109{
1110 if (const_alpha == 256) {
1111 Blend_ARGB32_on_RGB16_SourceAlpha noAlpha;
1112 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1113 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1114 targetRect, sourceRect, clip, targetRectTransform, noAlpha);
1115 } else {
1116 Blend_ARGB32_on_RGB16_SourceAndConstAlpha constAlpha(const_alpha);
1117 qt_transform_image(reinterpret_cast<quint16 *>(destPixels), dbpl,
1118 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1119 targetRect, sourceRect, clip, targetRectTransform, constAlpha);
1120 }
1121}
1122
1123
1124void qt_transform_image_rgb32_on_rgb32(uchar *destPixels, int dbpl,
1125 const uchar *srcPixels, int sbpl,
1126 const QRectF &targetRect,
1127 const QRectF &sourceRect,
1128 const QRect &clip,
1129 const QTransform &targetRectTransform,
1130 int const_alpha)
1131{
1132 if (const_alpha == 256) {
1133 Blend_RGB32_on_RGB32_NoAlpha noAlpha;
1134 qt_transform_image(reinterpret_cast<quint32 *>(destPixels), dbpl,
1135 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1136 targetRect, sourceRect, clip, targetRectTransform, noAlpha);
1137 } else {
1138 Blend_RGB32_on_RGB32_ConstAlpha constAlpha(const_alpha);
1139 qt_transform_image(reinterpret_cast<quint32 *>(destPixels), dbpl,
1140 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1141 targetRect, sourceRect, clip, targetRectTransform, constAlpha);
1142 }
1143}
1144
1145void qt_transform_image_argb32_on_argb32(uchar *destPixels, int dbpl,
1146 const uchar *srcPixels, int sbpl,
1147 const QRectF &targetRect,
1148 const QRectF &sourceRect,
1149 const QRect &clip,
1150 const QTransform &targetRectTransform,
1151 int const_alpha)
1152{
1153 if (const_alpha == 256) {
1154 Blend_ARGB32_on_ARGB32_SourceAlpha sourceAlpha;
1155 qt_transform_image(reinterpret_cast<quint32 *>(destPixels), dbpl,
1156 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1157 targetRect, sourceRect, clip, targetRectTransform, sourceAlpha);
1158 } else {
1159 Blend_ARGB32_on_ARGB32_SourceAndConstAlpha constAlpha(const_alpha);
1160 qt_transform_image(reinterpret_cast<quint32 *>(destPixels), dbpl,
1161 reinterpret_cast<const quint32 *>(srcPixels), sbpl,
1162 targetRect, sourceRect, clip, targetRectTransform, constAlpha);
1163 }
1164}
1165
1166SrcOverScaleFunc qScaleFunctions[QImage::NImageFormats][QImage::NImageFormats] = {
1167 { // Format_Invalid
1168 0, // Format_Invalid,
1169 0, // Format_Mono,
1170 0, // Format_MonoLSB,
1171 0, // Format_Indexed8,
1172 0, // Format_RGB32,
1173 0, // Format_ARGB32,
1174 0, // Format_ARGB32_Premultiplied,
1175 0, // Format_RGB16,
1176 0, // Format_ARGB8565_Premultiplied,
1177 0, // Format_RGB666,
1178 0, // Format_ARGB6666_Premultiplied,
1179 0, // Format_RGB555,
1180 0, // Format_ARGB8555_Premultiplied,
1181 0, // Format_RGB888,
1182 0, // Format_RGB444,
1183 0 // Format_ARGB4444_Premultiplied,
1184 },
1185 { // Format_Mono
1186 0, // Format_Invalid,
1187 0, // Format_Mono,
1188 0, // Format_MonoLSB,
1189 0, // Format_Indexed8,
1190 0, // Format_RGB32,
1191 0, // Format_ARGB32,
1192 0, // Format_ARGB32_Premultiplied,
1193 0, // Format_RGB16,
1194 0, // Format_ARGB8565_Premultiplied,
1195 0, // Format_RGB666,
1196 0, // Format_ARGB6666_Premultiplied,
1197 0, // Format_RGB555,
1198 0, // Format_ARGB8555_Premultiplied,
1199 0, // Format_RGB888,
1200 0, // Format_RGB444,
1201 0 // Format_ARGB4444_Premultiplied,
1202 },
1203 { // Format_MonoLSB
1204 0, // Format_Invalid,
1205 0, // Format_Mono,
1206 0, // Format_MonoLSB,
1207 0, // Format_Indexed8,
1208 0, // Format_RGB32,
1209 0, // Format_ARGB32,
1210 0, // Format_ARGB32_Premultiplied,
1211 0, // Format_RGB16,
1212 0, // Format_ARGB8565_Premultiplied,
1213 0, // Format_RGB666,
1214 0, // Format_ARGB6666_Premultiplied,
1215 0, // Format_RGB555,
1216 0, // Format_ARGB8555_Premultiplied,
1217 0, // Format_RGB888,
1218 0, // Format_RGB444,
1219 0 // Format_ARGB4444_Premultiplied,
1220 },
1221 { // Format_Indexed8
1222 0, // Format_Invalid,
1223 0, // Format_Mono,
1224 0, // Format_MonoLSB,
1225 0, // Format_Indexed8,
1226 0, // Format_RGB32,
1227 0, // Format_ARGB32,
1228 0, // Format_ARGB32_Premultiplied,
1229 0, // Format_RGB16,
1230 0, // Format_ARGB8565_Premultiplied,
1231 0, // Format_RGB666,
1232 0, // Format_ARGB6666_Premultiplied,
1233 0, // Format_RGB555,
1234 0, // Format_ARGB8555_Premultiplied,
1235 0, // Format_RGB888,
1236 0, // Format_RGB444,
1237 0 // Format_ARGB4444_Premultiplied,
1238 },
1239 { // Format_RGB32
1240 0, // Format_Invalid,
1241 0, // Format_Mono,
1242 0, // Format_MonoLSB,
1243 0, // Format_Indexed8,
1244 qt_scale_image_rgb32_on_rgb32, // Format_RGB32,
1245 0, // Format_ARGB32,
1246 qt_scale_image_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1247 0, // Format_RGB16,
1248 0, // Format_ARGB8565_Premultiplied,
1249 0, // Format_RGB666,
1250 0, // Format_ARGB6666_Premultiplied,
1251 0, // Format_RGB555,
1252 0, // Format_ARGB8555_Premultiplied,
1253 0, // Format_RGB888,
1254 0, // Format_RGB444,
1255 0 // Format_ARGB4444_Premultiplied,
1256 },
1257 { // Format_ARGB32
1258 0, // Format_Invalid,
1259 0, // Format_Mono,
1260 0, // Format_MonoLSB,
1261 0, // Format_Indexed8,
1262 0, // Format_RGB32,
1263 0, // Format_ARGB32,
1264 0, // Format_ARGB32_Premultiplied,
1265 0, // Format_RGB16,
1266 0, // Format_ARGB8565_Premultiplied,
1267 0, // Format_RGB666,
1268 0, // Format_ARGB6666_Premultiplied,
1269 0, // Format_RGB555,
1270 0, // Format_ARGB8555_Premultiplied,
1271 0, // Format_RGB888,
1272 0, // Format_RGB444,
1273 0 // Format_ARGB4444_Premultiplied,
1274 },
1275 { // Format_ARGB32_Premultiplied
1276 0, // Format_Invalid,
1277 0, // Format_Mono,
1278 0, // Format_MonoLSB,
1279 0, // Format_Indexed8,
1280 qt_scale_image_rgb32_on_rgb32, // Format_RGB32,
1281 0, // Format_ARGB32,
1282 qt_scale_image_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1283 0, // Format_RGB16,
1284 0, // Format_ARGB8565_Premultiplied,
1285 0, // Format_RGB666,
1286 0, // Format_ARGB6666_Premultiplied,
1287 0, // Format_RGB555,
1288 0, // Format_ARGB8555_Premultiplied,
1289 0, // Format_RGB888,
1290 0, // Format_RGB444,
1291 0 // Format_ARGB4444_Premultiplied,
1292 },
1293 { // Format_RGB16
1294 0, // Format_Invalid,
1295 0, // Format_Mono,
1296 0, // Format_MonoLSB,
1297 0, // Format_Indexed8,
1298 0, // Format_RGB32,
1299 0, // Format_ARGB32,
1300 qt_scale_image_argb32_on_rgb16, // Format_ARGB32_Premultiplied,
1301 qt_scale_image_rgb16_on_rgb16, // Format_RGB16,
1302 qt_scale_image_argb24_on_rgb16, // Format_ARGB8565_Premultiplied,
1303 0, // Format_RGB666,
1304 0, // Format_ARGB6666_Premultiplied,
1305 0, // Format_RGB555,
1306 0, // Format_ARGB8555_Premultiplied,
1307 0, // Format_RGB888,
1308 0, // Format_RGB444,
1309 0 // Format_ARGB4444_Premultiplied,
1310 },
1311 { // Format_ARGB8565_Premultiplied
1312 0, // Format_Invalid,
1313 0, // Format_Mono,
1314 0, // Format_MonoLSB,
1315 0, // Format_Indexed8,
1316 0, // Format_RGB32,
1317 0, // Format_ARGB32,
1318 0, // Format_ARGB32_Premultiplied,
1319 0, // Format_RGB16,
1320 0, // Format_ARGB8565_Premultiplied,
1321 0, // Format_RGB666,
1322 0, // Format_ARGB6666_Premultiplied,
1323 0, // Format_RGB555,
1324 0, // Format_ARGB8555_Premultiplied,
1325 0, // Format_RGB888,
1326 0, // Format_RGB444,
1327 0 // Format_ARGB4444_Premultiplied,
1328 },
1329 { // Format_RGB666
1330 0, // Format_Invalid,
1331 0, // Format_Mono,
1332 0, // Format_MonoLSB,
1333 0, // Format_Indexed8,
1334 0, // Format_RGB32,
1335 0, // Format_ARGB32,
1336 0, // Format_ARGB32_Premultiplied,
1337 0, // Format_RGB16,
1338 0, // Format_ARGB8565_Premultiplied,
1339 0, // Format_RGB666,
1340 0, // Format_ARGB6666_Premultiplied,
1341 0, // Format_RGB555,
1342 0, // Format_ARGB8555_Premultiplied,
1343 0, // Format_RGB888,
1344 0, // Format_RGB444,
1345 0 // Format_ARGB4444_Premultiplied,
1346 },
1347 { // Format_ARGB6666_Premultiplied
1348 0, // Format_Invalid,
1349 0, // Format_Mono,
1350 0, // Format_MonoLSB,
1351 0, // Format_Indexed8,
1352 0, // Format_RGB32,
1353 0, // Format_ARGB32,
1354 0, // Format_ARGB32_Premultiplied,
1355 0, // Format_RGB16,
1356 0, // Format_ARGB8565_Premultiplied,
1357 0, // Format_RGB666,
1358 0, // Format_ARGB6666_Premultiplied,
1359 0, // Format_RGB555,
1360 0, // Format_ARGB8555_Premultiplied,
1361 0, // Format_RGB888,
1362 0, // Format_RGB444,
1363 0 // Format_ARGB4444_Premultiplied,
1364 },
1365 { // Format_RGB555
1366 0, // Format_Invalid,
1367 0, // Format_Mono,
1368 0, // Format_MonoLSB,
1369 0, // Format_Indexed8,
1370 0, // Format_RGB32,
1371 0, // Format_ARGB32,
1372 0, // Format_ARGB32_Premultiplied,
1373 0, // Format_RGB16,
1374 0, // Format_ARGB8565_Premultiplied,
1375 0, // Format_RGB666,
1376 0, // Format_ARGB6666_Premultiplied,
1377 0, // Format_RGB555,
1378 0, // Format_ARGB8555_Premultiplied,
1379 0, // Format_RGB888,
1380 0, // Format_RGB444,
1381 0 // Format_ARGB4444_Premultiplied,
1382 },
1383 { // Format_ARGB8555_Premultiplied
1384 0, // Format_Invalid,
1385 0, // Format_Mono,
1386 0, // Format_MonoLSB,
1387 0, // Format_Indexed8,
1388 0, // Format_RGB32,
1389 0, // Format_ARGB32,
1390 0, // Format_ARGB32_Premultiplied,
1391 0, // Format_RGB16,
1392 0, // Format_ARGB8565_Premultiplied,
1393 0, // Format_RGB666,
1394 0, // Format_ARGB6666_Premultiplied,
1395 0, // Format_RGB555,
1396 0, // Format_ARGB8555_Premultiplied,
1397 0, // Format_RGB888,
1398 0, // Format_RGB444,
1399 0 // Format_ARGB4444_Premultiplied,
1400 },
1401 { // Format_RGB888
1402 0, // Format_Invalid,
1403 0, // Format_Mono,
1404 0, // Format_MonoLSB,
1405 0, // Format_Indexed8,
1406 0, // Format_RGB32,
1407 0, // Format_ARGB32,
1408 0, // Format_ARGB32_Premultiplied,
1409 0, // Format_RGB16,
1410 0, // Format_ARGB8565_Premultiplied,
1411 0, // Format_RGB666,
1412 0, // Format_ARGB6666_Premultiplied,
1413 0, // Format_RGB555,
1414 0, // Format_ARGB8555_Premultiplied,
1415 0, // Format_RGB888,
1416 0, // Format_RGB444,
1417 0 // Format_ARGB4444_Premultiplied,
1418 },
1419 { // Format_RGB444
1420 0, // Format_Invalid,
1421 0, // Format_Mono,
1422 0, // Format_MonoLSB,
1423 0, // Format_Indexed8,
1424 0, // Format_RGB32,
1425 0, // Format_ARGB32,
1426 0, // Format_ARGB32_Premultiplied,
1427 0, // Format_RGB16,
1428 0, // Format_ARGB8565_Premultiplied,
1429 0, // Format_RGB666,
1430 0, // Format_ARGB6666_Premultiplied,
1431 0, // Format_RGB555,
1432 0, // Format_ARGB8555_Premultiplied,
1433 0, // Format_RGB888,
1434 0, // Format_RGB444,
1435 0 // Format_ARGB4444_Premultiplied,
1436 },
1437 { // Format_ARGB4444_Premultiplied
1438 0, // Format_Invalid,
1439 0, // Format_Mono,
1440 0, // Format_MonoLSB,
1441 0, // Format_Indexed8,
1442 0, // Format_RGB32,
1443 0, // Format_ARGB32,
1444 0, // Format_ARGB32_Premultiplied,
1445 0, // Format_RGB16,
1446 0, // Format_ARGB8565_Premultiplied,
1447 0, // Format_RGB666,
1448 0, // Format_ARGB6666_Premultiplied,
1449 0, // Format_RGB555,
1450 0, // Format_ARGB8555_Premultiplied,
1451 0, // Format_RGB888,
1452 0, // Format_RGB444,
1453 0 // Format_ARGB4444_Premultiplied,
1454 }
1455};
1456
1457
1458SrcOverBlendFunc qBlendFunctions[QImage::NImageFormats][QImage::NImageFormats] = {
1459 { // Format_Invalid
1460 0, // Format_Invalid,
1461 0, // Format_Mono,
1462 0, // Format_MonoLSB,
1463 0, // Format_Indexed8,
1464 0, // Format_RGB32,
1465 0, // Format_ARGB32,
1466 0, // Format_ARGB32_Premultiplied,
1467 0, // Format_RGB16,
1468 0, // Format_ARGB8565_Premultiplied,
1469 0, // Format_RGB666,
1470 0, // Format_ARGB6666_Premultiplied,
1471 0, // Format_RGB555,
1472 0, // Format_ARGB8555_Premultiplied,
1473 0, // Format_RGB888,
1474 0, // Format_RGB444,
1475 0 // Format_ARGB4444_Premultiplied,
1476 },
1477 { // Format_Mono
1478 0, // Format_Invalid,
1479 0, // Format_Mono,
1480 0, // Format_MonoLSB,
1481 0, // Format_Indexed8,
1482 0, // Format_RGB32,
1483 0, // Format_ARGB32,
1484 0, // Format_ARGB32_Premultiplied,
1485 0, // Format_RGB16,
1486 0, // Format_ARGB8565_Premultiplied,
1487 0, // Format_RGB666,
1488 0, // Format_ARGB6666_Premultiplied,
1489 0, // Format_RGB555,
1490 0, // Format_ARGB8555_Premultiplied,
1491 0, // Format_RGB888,
1492 0, // Format_RGB444,
1493 0 // Format_ARGB4444_Premultiplied,
1494 },
1495 { // Format_MonoLSB
1496 0, // Format_Invalid,
1497 0, // Format_Mono,
1498 0, // Format_MonoLSB,
1499 0, // Format_Indexed8,
1500 0, // Format_RGB32,
1501 0, // Format_ARGB32,
1502 0, // Format_ARGB32_Premultiplied,
1503 0, // Format_RGB16,
1504 0, // Format_ARGB8565_Premultiplied,
1505 0, // Format_RGB666,
1506 0, // Format_ARGB6666_Premultiplied,
1507 0, // Format_RGB555,
1508 0, // Format_ARGB8555_Premultiplied,
1509 0, // Format_RGB888,
1510 0, // Format_RGB444,
1511 0 // Format_ARGB4444_Premultiplied,
1512 },
1513 { // Format_Indexed8
1514 0, // Format_Invalid,
1515 0, // Format_Mono,
1516 0, // Format_MonoLSB,
1517 0, // Format_Indexed8,
1518 0, // Format_RGB32,
1519 0, // Format_ARGB32,
1520 0, // Format_ARGB32_Premultiplied,
1521 0, // Format_RGB16,
1522 0, // Format_ARGB8565_Premultiplied,
1523 0, // Format_RGB666,
1524 0, // Format_ARGB6666_Premultiplied,
1525 0, // Format_RGB555,
1526 0, // Format_ARGB8555_Premultiplied,
1527 0, // Format_RGB888,
1528 0, // Format_RGB444,
1529 0 // Format_ARGB4444_Premultiplied,
1530 },
1531 { // Format_RGB32
1532 0, // Format_Invalid,
1533 0, // Format_Mono,
1534 0, // Format_MonoLSB,
1535 0, // Format_Indexed8,
1536 qt_blend_rgb32_on_rgb32, // Format_RGB32,
1537 0, // Format_ARGB32,
1538 qt_blend_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1539 0, // Format_RGB16,
1540 0, // Format_ARGB8565_Premultiplied,
1541 0, // Format_RGB666,
1542 0, // Format_ARGB6666_Premultiplied,
1543 0, // Format_RGB555,
1544 0, // Format_ARGB8555_Premultiplied,
1545 0, // Format_RGB888,
1546 0, // Format_RGB444,
1547 0 // Format_ARGB4444_Premultiplied,
1548 },
1549 { // Format_ARGB32
1550 0, // Format_Invalid,
1551 0, // Format_Mono,
1552 0, // Format_MonoLSB,
1553 0, // Format_Indexed8,
1554 0, // Format_RGB32,
1555 0, // Format_ARGB32,
1556 0, // Format_ARGB32_Premultiplied,
1557 0, // Format_RGB16,
1558 0, // Format_ARGB8565_Premultiplied,
1559 0, // Format_RGB666,
1560 0, // Format_ARGB6666_Premultiplied,
1561 0, // Format_RGB555,
1562 0, // Format_ARGB8555_Premultiplied,
1563 0, // Format_RGB888,
1564 0, // Format_RGB444,
1565 0 // Format_ARGB4444_Premultiplied,
1566 },
1567 { // Format_ARGB32_Premultiplied
1568 0, // Format_Invalid,
1569 0, // Format_Mono,
1570 0, // Format_MonoLSB,
1571 0, // Format_Indexed8,
1572 qt_blend_rgb32_on_rgb32, // Format_RGB32,
1573 0, // Format_ARGB32,
1574 qt_blend_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1575 0, // Format_RGB16,
1576 0, // Format_ARGB8565_Premultiplied,
1577 0, // Format_RGB666,
1578 0, // Format_ARGB6666_Premultiplied,
1579 0, // Format_RGB555,
1580 0, // Format_ARGB8555_Premultiplied,
1581 0, // Format_RGB888,
1582 0, // Format_RGB444,
1583 0 // Format_ARGB4444_Premultiplied,
1584 },
1585 { // Format_RGB16
1586 0, // Format_Invalid,
1587 0, // Format_Mono,
1588 0, // Format_MonoLSB,
1589 0, // Format_Indexed8,
1590 qt_blend_rgb32_on_rgb16, // Format_RGB32,
1591 0, // Format_ARGB32,
1592 qt_blend_argb32_on_rgb16, // Format_ARGB32_Premultiplied,
1593 qt_blend_rgb16_on_rgb16, // Format_RGB16,
1594 qt_blend_argb24_on_rgb16, // Format_ARGB8565_Premultiplied,
1595 0, // Format_RGB666,
1596 0, // Format_ARGB6666_Premultiplied,
1597 0, // Format_RGB555,
1598 0, // Format_ARGB8555_Premultiplied,
1599 0, // Format_RGB888,
1600 0, // Format_RGB444,
1601 0 // Format_ARGB4444_Premultiplied,
1602 },
1603 { // Format_ARGB8565_Premultiplied
1604 0, // Format_Invalid,
1605 0, // Format_Mono,
1606 0, // Format_MonoLSB,
1607 0, // Format_Indexed8,
1608 0, // Format_RGB32,
1609 0, // Format_ARGB32,
1610 0, // Format_ARGB32_Premultiplied,
1611 0, // Format_RGB16,
1612 0, // Format_ARGB8565_Premultiplied,
1613 0, // Format_RGB666,
1614 0, // Format_ARGB6666_Premultiplied,
1615 0, // Format_RGB555,
1616 0, // Format_ARGB8555_Premultiplied,
1617 0, // Format_RGB888,
1618 0, // Format_RGB444,
1619 0 // Format_ARGB4444_Premultiplied,
1620 },
1621 { // Format_RGB666
1622 0, // Format_Invalid,
1623 0, // Format_Mono,
1624 0, // Format_MonoLSB,
1625 0, // Format_Indexed8,
1626 0, // Format_RGB32,
1627 0, // Format_ARGB32,
1628 0, // Format_ARGB32_Premultiplied,
1629 0, // Format_RGB16,
1630 0, // Format_ARGB8565_Premultiplied,
1631 0, // Format_RGB666,
1632 0, // Format_ARGB6666_Premultiplied,
1633 0, // Format_RGB555,
1634 0, // Format_ARGB8555_Premultiplied,
1635 0, // Format_RGB888,
1636 0, // Format_RGB444,
1637 0 // Format_ARGB4444_Premultiplied,
1638 },
1639 { // Format_ARGB6666_Premultiplied
1640 0, // Format_Invalid,
1641 0, // Format_Mono,
1642 0, // Format_MonoLSB,
1643 0, // Format_Indexed8,
1644 0, // Format_RGB32,
1645 0, // Format_ARGB32,
1646 0, // Format_ARGB32_Premultiplied,
1647 0, // Format_RGB16,
1648 0, // Format_ARGB8565_Premultiplied,
1649 0, // Format_RGB666,
1650 0, // Format_ARGB6666_Premultiplied,
1651 0, // Format_RGB555,
1652 0, // Format_ARGB8555_Premultiplied,
1653 0, // Format_RGB888,
1654 0, // Format_RGB444,
1655 0 // Format_ARGB4444_Premultiplied,
1656 },
1657 { // Format_RGB555
1658 0, // Format_Invalid,
1659 0, // Format_Mono,
1660 0, // Format_MonoLSB,
1661 0, // Format_Indexed8,
1662 0, // Format_RGB32,
1663 0, // Format_ARGB32,
1664 0, // Format_ARGB32_Premultiplied,
1665 0, // Format_RGB16,
1666 0, // Format_ARGB8565_Premultiplied,
1667 0, // Format_RGB666,
1668 0, // Format_ARGB6666_Premultiplied,
1669 0, // Format_RGB555,
1670 0, // Format_ARGB8555_Premultiplied,
1671 0, // Format_RGB888,
1672 0, // Format_RGB444,
1673 0 // Format_ARGB4444_Premultiplied,
1674 },
1675 { // Format_ARGB8555_Premultiplied
1676 0, // Format_Invalid,
1677 0, // Format_Mono,
1678 0, // Format_MonoLSB,
1679 0, // Format_Indexed8,
1680 0, // Format_RGB32,
1681 0, // Format_ARGB32,
1682 0, // Format_ARGB32_Premultiplied,
1683 0, // Format_RGB16,
1684 0, // Format_ARGB8565_Premultiplied,
1685 0, // Format_RGB666,
1686 0, // Format_ARGB6666_Premultiplied,
1687 0, // Format_RGB555,
1688 0, // Format_ARGB8555_Premultiplied,
1689 0, // Format_RGB888,
1690 0, // Format_RGB444,
1691 0 // Format_ARGB4444_Premultiplied,
1692 },
1693 { // Format_RGB888
1694 0, // Format_Invalid,
1695 0, // Format_Mono,
1696 0, // Format_MonoLSB,
1697 0, // Format_Indexed8,
1698 0, // Format_RGB32,
1699 0, // Format_ARGB32,
1700 0, // Format_ARGB32_Premultiplied,
1701 0, // Format_RGB16,
1702 0, // Format_ARGB8565_Premultiplied,
1703 0, // Format_RGB666,
1704 0, // Format_ARGB6666_Premultiplied,
1705 0, // Format_RGB555,
1706 0, // Format_ARGB8555_Premultiplied,
1707 0, // Format_RGB888,
1708 0, // Format_RGB444,
1709 0 // Format_ARGB4444_Premultiplied,
1710 },
1711 { // Format_RGB444
1712 0, // Format_Invalid,
1713 0, // Format_Mono,
1714 0, // Format_MonoLSB,
1715 0, // Format_Indexed8,
1716 0, // Format_RGB32,
1717 0, // Format_ARGB32,
1718 0, // Format_ARGB32_Premultiplied,
1719 0, // Format_RGB16,
1720 0, // Format_ARGB8565_Premultiplied,
1721 0, // Format_RGB666,
1722 0, // Format_ARGB6666_Premultiplied,
1723 0, // Format_RGB555,
1724 0, // Format_ARGB8555_Premultiplied,
1725 0, // Format_RGB888,
1726 0, // Format_RGB444,
1727 0 // Format_ARGB4444_Premultiplied,
1728 },
1729 { // Format_ARGB4444_Premultiplied
1730 0, // Format_Invalid,
1731 0, // Format_Mono,
1732 0, // Format_MonoLSB,
1733 0, // Format_Indexed8,
1734 0, // Format_RGB32,
1735 0, // Format_ARGB32,
1736 0, // Format_ARGB32_Premultiplied,
1737 0, // Format_RGB16,
1738 0, // Format_ARGB8565_Premultiplied,
1739 0, // Format_RGB666,
1740 0, // Format_ARGB6666_Premultiplied,
1741 0, // Format_RGB555,
1742 0, // Format_ARGB8555_Premultiplied,
1743 0, // Format_RGB888,
1744 0, // Format_RGB444,
1745 0 // Format_ARGB4444_Premultiplied,
1746 }
1747};
1748
1749SrcOverTransformFunc qTransformFunctions[QImage::NImageFormats][QImage::NImageFormats] = {
1750 { // Format_Invalid
1751 0, // Format_Invalid,
1752 0, // Format_Mono,
1753 0, // Format_MonoLSB,
1754 0, // Format_Indexed8,
1755 0, // Format_RGB32,
1756 0, // Format_ARGB32,
1757 0, // Format_ARGB32_Premultiplied,
1758 0, // Format_RGB16,
1759 0, // Format_ARGB8565_Premultiplied,
1760 0, // Format_RGB666,
1761 0, // Format_ARGB6666_Premultiplied,
1762 0, // Format_RGB555,
1763 0, // Format_ARGB8555_Premultiplied,
1764 0, // Format_RGB888,
1765 0, // Format_RGB444,
1766 0 // Format_ARGB4444_Premultiplied,
1767 },
1768 { // Format_Mono
1769 0, // Format_Invalid,
1770 0, // Format_Mono,
1771 0, // Format_MonoLSB,
1772 0, // Format_Indexed8,
1773 0, // Format_RGB32,
1774 0, // Format_ARGB32,
1775 0, // Format_ARGB32_Premultiplied,
1776 0, // Format_RGB16,
1777 0, // Format_ARGB8565_Premultiplied,
1778 0, // Format_RGB666,
1779 0, // Format_ARGB6666_Premultiplied,
1780 0, // Format_RGB555,
1781 0, // Format_ARGB8555_Premultiplied,
1782 0, // Format_RGB888,
1783 0, // Format_RGB444,
1784 0 // Format_ARGB4444_Premultiplied,
1785 },
1786 { // Format_MonoLSB
1787 0, // Format_Invalid,
1788 0, // Format_Mono,
1789 0, // Format_MonoLSB,
1790 0, // Format_Indexed8,
1791 0, // Format_RGB32,
1792 0, // Format_ARGB32,
1793 0, // Format_ARGB32_Premultiplied,
1794 0, // Format_RGB16,
1795 0, // Format_ARGB8565_Premultiplied,
1796 0, // Format_RGB666,
1797 0, // Format_ARGB6666_Premultiplied,
1798 0, // Format_RGB555,
1799 0, // Format_ARGB8555_Premultiplied,
1800 0, // Format_RGB888,
1801 0, // Format_RGB444,
1802 0 // Format_ARGB4444_Premultiplied,
1803 },
1804 { // Format_Indexed8
1805 0, // Format_Invalid,
1806 0, // Format_Mono,
1807 0, // Format_MonoLSB,
1808 0, // Format_Indexed8,
1809 0, // Format_RGB32,
1810 0, // Format_ARGB32,
1811 0, // Format_ARGB32_Premultiplied,
1812 0, // Format_RGB16,
1813 0, // Format_ARGB8565_Premultiplied,
1814 0, // Format_RGB666,
1815 0, // Format_ARGB6666_Premultiplied,
1816 0, // Format_RGB555,
1817 0, // Format_ARGB8555_Premultiplied,
1818 0, // Format_RGB888,
1819 0, // Format_RGB444,
1820 0 // Format_ARGB4444_Premultiplied,
1821 },
1822 { // Format_RGB32
1823 0, // Format_Invalid,
1824 0, // Format_Mono,
1825 0, // Format_MonoLSB,
1826 0, // Format_Indexed8,
1827 qt_transform_image_rgb32_on_rgb32, // Format_RGB32,
1828 0, // Format_ARGB32,
1829 qt_transform_image_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1830 0, // Format_RGB16,
1831 0, // Format_ARGB8565_Premultiplied,
1832 0, // Format_RGB666,
1833 0, // Format_ARGB6666_Premultiplied,
1834 0, // Format_RGB555,
1835 0, // Format_ARGB8555_Premultiplied,
1836 0, // Format_RGB888,
1837 0, // Format_RGB444,
1838 0 // Format_ARGB4444_Premultiplied,
1839 },
1840 { // Format_ARGB32
1841 0, // Format_Invalid,
1842 0, // Format_Mono,
1843 0, // Format_MonoLSB,
1844 0, // Format_Indexed8,
1845 0, // Format_RGB32,
1846 0, // Format_ARGB32,
1847 0, // Format_ARGB32_Premultiplied,
1848 0, // Format_RGB16,
1849 0, // Format_ARGB8565_Premultiplied,
1850 0, // Format_RGB666,
1851 0, // Format_ARGB6666_Premultiplied,
1852 0, // Format_RGB555,
1853 0, // Format_ARGB8555_Premultiplied,
1854 0, // Format_RGB888,
1855 0, // Format_RGB444,
1856 0 // Format_ARGB4444_Premultiplied,
1857 },
1858 { // Format_ARGB32_Premultiplied
1859 0, // Format_Invalid,
1860 0, // Format_Mono,
1861 0, // Format_MonoLSB,
1862 0, // Format_Indexed8,
1863 qt_transform_image_rgb32_on_rgb32, // Format_RGB32,
1864 0, // Format_ARGB32,
1865 qt_transform_image_argb32_on_argb32, // Format_ARGB32_Premultiplied,
1866 0, // Format_RGB16,
1867 0, // Format_ARGB8565_Premultiplied,
1868 0, // Format_RGB666,
1869 0, // Format_ARGB6666_Premultiplied,
1870 0, // Format_RGB555,
1871 0, // Format_ARGB8555_Premultiplied,
1872 0, // Format_RGB888,
1873 0, // Format_RGB444,
1874 0 // Format_ARGB4444_Premultiplied,
1875 },
1876 { // Format_RGB16
1877 0, // Format_Invalid,
1878 0, // Format_Mono,
1879 0, // Format_MonoLSB,
1880 0, // Format_Indexed8,
1881 0, // Format_RGB32,
1882 0, // Format_ARGB32,
1883 qt_transform_image_argb32_on_rgb16, // Format_ARGB32_Premultiplied,
1884 qt_transform_image_rgb16_on_rgb16, // Format_RGB16,
1885 qt_transform_image_argb24_on_rgb16, // Format_ARGB8565_Premultiplied,
1886 0, // Format_RGB666,
1887 0, // Format_ARGB6666_Premultiplied,
1888 0, // Format_RGB555,
1889 0, // Format_ARGB8555_Premultiplied,
1890 0, // Format_RGB888,
1891 0, // Format_RGB444,
1892 0 // Format_ARGB4444_Premultiplied,
1893 },
1894 { // Format_ARGB8565_Premultiplied
1895 0, // Format_Invalid,
1896 0, // Format_Mono,
1897 0, // Format_MonoLSB,
1898 0, // Format_Indexed8,
1899 0, // Format_RGB32,
1900 0, // Format_ARGB32,
1901 0, // Format_ARGB32_Premultiplied,
1902 0, // Format_RGB16,
1903 0, // Format_ARGB8565_Premultiplied,
1904 0, // Format_RGB666,
1905 0, // Format_ARGB6666_Premultiplied,
1906 0, // Format_RGB555,
1907 0, // Format_ARGB8555_Premultiplied,
1908 0, // Format_RGB888,
1909 0, // Format_RGB444,
1910 0 // Format_ARGB4444_Premultiplied,
1911 },
1912 { // Format_RGB666
1913 0, // Format_Invalid,
1914 0, // Format_Mono,
1915 0, // Format_MonoLSB,
1916 0, // Format_Indexed8,
1917 0, // Format_RGB32,
1918 0, // Format_ARGB32,
1919 0, // Format_ARGB32_Premultiplied,
1920 0, // Format_RGB16,
1921 0, // Format_ARGB8565_Premultiplied,
1922 0, // Format_RGB666,
1923 0, // Format_ARGB6666_Premultiplied,
1924 0, // Format_RGB555,
1925 0, // Format_ARGB8555_Premultiplied,
1926 0, // Format_RGB888,
1927 0, // Format_RGB444,
1928 0 // Format_ARGB4444_Premultiplied,
1929 },
1930 { // Format_ARGB6666_Premultiplied
1931 0, // Format_Invalid,
1932 0, // Format_Mono,
1933 0, // Format_MonoLSB,
1934 0, // Format_Indexed8,
1935 0, // Format_RGB32,
1936 0, // Format_ARGB32,
1937 0, // Format_ARGB32_Premultiplied,
1938 0, // Format_RGB16,
1939 0, // Format_ARGB8565_Premultiplied,
1940 0, // Format_RGB666,
1941 0, // Format_ARGB6666_Premultiplied,
1942 0, // Format_RGB555,
1943 0, // Format_ARGB8555_Premultiplied,
1944 0, // Format_RGB888,
1945 0, // Format_RGB444,
1946 0 // Format_ARGB4444_Premultiplied,
1947 },
1948 { // Format_RGB555
1949 0, // Format_Invalid,
1950 0, // Format_Mono,
1951 0, // Format_MonoLSB,
1952 0, // Format_Indexed8,
1953 0, // Format_RGB32,
1954 0, // Format_ARGB32,
1955 0, // Format_ARGB32_Premultiplied,
1956 0, // Format_RGB16,
1957 0, // Format_ARGB8565_Premultiplied,
1958 0, // Format_RGB666,
1959 0, // Format_ARGB6666_Premultiplied,
1960 0, // Format_RGB555,
1961 0, // Format_ARGB8555_Premultiplied,
1962 0, // Format_RGB888,
1963 0, // Format_RGB444,
1964 0 // Format_ARGB4444_Premultiplied,
1965 },
1966 { // Format_ARGB8555_Premultiplied
1967 0, // Format_Invalid,
1968 0, // Format_Mono,
1969 0, // Format_MonoLSB,
1970 0, // Format_Indexed8,
1971 0, // Format_RGB32,
1972 0, // Format_ARGB32,
1973 0, // Format_ARGB32_Premultiplied,
1974 0, // Format_RGB16,
1975 0, // Format_ARGB8565_Premultiplied,
1976 0, // Format_RGB666,
1977 0, // Format_ARGB6666_Premultiplied,
1978 0, // Format_RGB555,
1979 0, // Format_ARGB8555_Premultiplied,
1980 0, // Format_RGB888,
1981 0, // Format_RGB444,
1982 0 // Format_ARGB4444_Premultiplied,
1983 },
1984 { // Format_RGB888
1985 0, // Format_Invalid,
1986 0, // Format_Mono,
1987 0, // Format_MonoLSB,
1988 0, // Format_Indexed8,
1989 0, // Format_RGB32,
1990 0, // Format_ARGB32,
1991 0, // Format_ARGB32_Premultiplied,
1992 0, // Format_RGB16,
1993 0, // Format_ARGB8565_Premultiplied,
1994 0, // Format_RGB666,
1995 0, // Format_ARGB6666_Premultiplied,
1996 0, // Format_RGB555,
1997 0, // Format_ARGB8555_Premultiplied,
1998 0, // Format_RGB888,
1999 0, // Format_RGB444,
2000 0 // Format_ARGB4444_Premultiplied,
2001 },
2002 { // Format_RGB444
2003 0, // Format_Invalid,
2004 0, // Format_Mono,
2005 0, // Format_MonoLSB,
2006 0, // Format_Indexed8,
2007 0, // Format_RGB32,
2008 0, // Format_ARGB32,
2009 0, // Format_ARGB32_Premultiplied,
2010 0, // Format_RGB16,
2011 0, // Format_ARGB8565_Premultiplied,
2012 0, // Format_RGB666,
2013 0, // Format_ARGB6666_Premultiplied,
2014 0, // Format_RGB555,
2015 0, // Format_ARGB8555_Premultiplied,
2016 0, // Format_RGB888,
2017 0, // Format_RGB444,
2018 0 // Format_ARGB4444_Premultiplied,
2019 },
2020 { // Format_ARGB4444_Premultiplied
2021 0, // Format_Invalid,
2022 0, // Format_Mono,
2023 0, // Format_MonoLSB,
2024 0, // Format_Indexed8,
2025 0, // Format_RGB32,
2026 0, // Format_ARGB32,
2027 0, // Format_ARGB32_Premultiplied,
2028 0, // Format_RGB16,
2029 0, // Format_ARGB8565_Premultiplied,
2030 0, // Format_RGB666,
2031 0, // Format_ARGB6666_Premultiplied,
2032 0, // Format_RGB555,
2033 0, // Format_ARGB8555_Premultiplied,
2034 0, // Format_RGB888,
2035 0, // Format_RGB444,
2036 0 // Format_ARGB4444_Premultiplied,
2037 }
2038};
2039
2040QT_END_NAMESPACE
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