/src/qtbase/src/gui/painting/qimagescale_p.h

Source
// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#ifndef QIMAGESCALE_P_H
#define QIMAGESCALE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <qimage.h>
#include <private/qtguiglobal_p.h>

#if QT_CONFIG(qtgui_threadpool)
#include <qthreadpool.h>
#include <private/qguiapplication_p.h>
#include <private/qlatch_p.h>
#include <private/qthreadpool_p.h>
#endif

QT_BEGIN_NAMESPACE

/*
  This version accepts only supported formats.
*/
QImage qSmoothScaleImage(const QImage &img, int w, int h);

namespace QImageScale {
    struct QImageScaleInfo {
        int *xpoints{nullptr};
        const unsigned int **ypoints{nullptr};
        int *xapoints{nullptr};
        int *yapoints{nullptr};
        int xup_yup{0};
        int sh = 0;
        int sw = 0;
    };

    template<typename T>
    void multithread_pixels_function(QImageScaleInfo *isi, int dh, const T &scaleSection)
    {
#if QT_CONFIG(qtgui_threadpool)
        int segments = (qsizetype(isi->sh) * isi->sw) / (1<<16);
        segments = std::min(segments, dh);
        QThreadPool *threadPool = QGuiApplicationPrivate::qtGuiThreadPool();
        if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
            QLatch latch(segments);
            int y = 0;
            for (int i = 0; i < segments; ++i) {
                int yn = (dh - y) / (segments - i);
                threadPool->start([&, y, yn]() {
                    scaleSection(y, y + yn);
                    latch.countDown();
                });
                y += yn;
            }
            latch.wait();
            return;
        }
#else
        Q_UNUSED(isi);
#endif
        scaleSection(0, dh);
    }
}

QT_END_NAMESPACE

#endif

Line	Count	Source
1		// Copyright (C) 2019 The Qt Company Ltd.
2		// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3		// Qt-Security score:significant reason:default
4		#ifndef QIMAGESCALE_P_H
5		#define QIMAGESCALE_P_H
6
7		//
8		// W A R N I N G
9		// -------------
10		//
11		// This file is not part of the Qt API. It exists purely as an
12		// implementation detail. This header file may change from version to
13		// version without notice, or even be removed.
14		//
15		// We mean it.
16		//
17
18		#include <qimage.h>
19		#include <private/qtguiglobal_p.h>
20
21		#if QT_CONFIG(qtgui_threadpool)
22		#include <qthreadpool.h>
23		#include <private/qguiapplication_p.h>
24		#include <private/qlatch_p.h>
25		#include <private/qthreadpool_p.h>
26		#endif
27
28		QT_BEGIN_NAMESPACE
29
30		/*
31		This version accepts only supported formats.
32		*/
33		QImage qSmoothScaleImage(const QImage &img, int w, int h);
34
35		namespace QImageScale {
36		struct QImageScaleInfo {
37		int *xpoints{nullptr};
38		const unsigned int **ypoints{nullptr};
39		int *xapoints{nullptr};
40		int *yapoints{nullptr};
41		int xup_yup{0};
42		int sh = 0;
43		int sw = 0;
44		};
45
46		template<typename T>
47		void multithread_pixels_function(QImageScaleInfo *isi, int dh, const T &scaleSection)
48	0	{
49	0	#if QT_CONFIG(qtgui_threadpool)
50	0	int segments = (qsizetype(isi->sh) * isi->sw) / (1<<16);
51	0	segments = std::min(segments, dh);
52	0	QThreadPool *threadPool = QGuiApplicationPrivate::qtGuiThreadPool();
53	0	if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
54	0	QLatch latch(segments);
55	0	int y = 0;
56	0	for (int i = 0; i < segments; ++i) {
57	0	int yn = (dh - y) / (segments - i);
58	0	threadPool->start([&, y, yn]() {
59	0	scaleSection(y, y + yn);
60	0	latch.countDown();
61	0	}); Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_up_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_up_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_up_x_down_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_up_x_down_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_down_x_up_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_down_x_up_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_down_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_down_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_up_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_up_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_up_x_down_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_up_x_down_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_down_x_up_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_down_x_up_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_down_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_down_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: qimagescale.cpp:QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const Unexecuted instantiation: QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy_sse4<true>(QImageScale::QImageScaleInfo, unsigned int*, int, int, int, int)::{lambda(int, int)#1} const&)::{lambda()#1}::operator()() const
62	0	y += yn;
63	0	}
64	0	latch.wait();
65	0	return;
66	0	}
67		#else
68		Q_UNUSED(isi);
69		#endif
70	0	scaleSection(0, dh);
71	0	} Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_up_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_up_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_up_x_down_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_up_x_down_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_down_x_up_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_down_x_up_y(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgba64_down_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgba64_down_xy(QImageScale::QImageScaleInfo, QRgba64, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_up_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_up_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_up_x_down_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_up_x_down_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_down_x_up_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_down_x_up_y(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleRgbaFP_down_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleRgbaFP_down_xy(QImageScale::QImageScaleInfo, QRgbaFloat<float>, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_up_x_down_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_down_x_up_y(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: qimagescale.cpp:void QImageScale::multithread_pixels_function<qt_qimageScaleAARGB_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGB_down_xy(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::$_0 const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_up_x_down_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_x_up_y_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy_sse4<false>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1} const&) Unexecuted instantiation: void QImageScale::multithread_pixels_function<qt_qimageScaleAARGBA_down_xy_sse4<true>(QImageScale::QImageScaleInfo, unsigned int, int, int, int, int)::{lambda(int, int)#1}>(QImageScale::QImageScaleInfo, int, qt_qimageScaleAARGBA_down_xy_sse4<true>(QImageScale::QImageScaleInfo, unsigned int*, int, int, int, int)::{lambda(int, int)#1} const&)
72		}
73
74		QT_END_NAMESPACE
75
76		#endif

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Created: 2026-10-14 06:52