qimage.cpp

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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
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** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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** included in the packaging of this file. Please review the following
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** $QT_END_LICENSE$
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****************************************************************************/
 
#include "qimage.h"
 
#include "qbuffer.h"
#include "qdatastream.h"
#include "qcolortransform.h"
#include "qfloat16.h"
#include "qmap.h"
#include "qtransform.h"
#include "qimagereader.h"
#include "qimagewriter.h"
#include "qrgbafloat.h"
#include "qstringlist.h"
#include "qvariant.h"
#include "qimagepixmapcleanuphooks_p.h"
#include <qpa/qplatformintegration.h>
#include <private/qguiapplication_p.h>
#include <ctype.h>
#include <stdlib.h>
#include <limits.h>
#include <qpa/qplatformpixmap.h>
#include <private/qcolortransform_p.h>
#include <private/qmemrotate_p.h>
#include <private/qimagescale_p.h>
#include <private/qpixellayout_p.h>
#include <private/qsimd_p.h>
 
#include <qhash.h>
 
#include <private/qpaintengine_raster_p.h>
 
#include <private/qimage_p.h>
#include <private/qfont_p.h>
 
#if QT_CONFIG(thread)
#include "qsemaphore.h"
#include "qthreadpool.h"
#endif
 
#include <qtgui_tracepoints_p.h>
 
#include <memory>
 
QT_BEGIN_NAMESPACE
 
// MSVC 19.28 does show spurious warning "C4723: potential divide by 0" for code that divides
// by height() in release builds. Anyhow, all the code paths in this file are only executed
// for valid QImage's, where height() cannot be 0. Therefore disable the warning.
QT_WARNING_DISABLE_MSVC(4723)
 
#if defined(Q_CC_DEC) && defined(__alpha) && (__DECCXX_VER-0 >= 50190001)
#pragma message disable narrowptr
#endif
 
 
#define QIMAGE_SANITYCHECK_MEMORY(image) \
    if ((image).isNull()) { \
        qWarning("QImage: out of memory, returning null image"); \
        return QImage(); \
    }
 
 
static QImage rotated90(const QImage &src);
static QImage rotated180(const QImage &src);
static QImage rotated270(const QImage &src);
 
static int next_qimage_serial_number()
{
    static QBasicAtomicInt serial = Q_BASIC_ATOMIC_INITIALIZER(0);
    return 1 + serial.fetchAndAddRelaxed(1);
}
 
QImageData::QImageData()
    : ref(0), width(0), height(0), depth(0), nbytes(0), devicePixelRatio(1.0), data(nullptr),
      format(QImage::Format_ARGB32), bytes_per_line(0),
      ser_no(next_qimage_serial_number()),
      detach_no(0),
      dpmx(qt_defaultDpiX() * 100 / qreal(2.54)),
      dpmy(qt_defaultDpiY() * 100 / qreal(2.54)),
      offset(0, 0), own_data(true), ro_data(false), has_alpha_clut(false),
      is_cached(false), cleanupFunction(nullptr), cleanupInfo(nullptr),
      paintEngine(nullptr)
{
}
 
QImageData * QImageData::create(const QSize &size, QImage::Format format)
{
    if (size.isEmpty() || format <= QImage::Format_Invalid || format >= QImage::NImageFormats)
        return nullptr;                             // invalid parameter(s)
 
    Q_TRACE_SCOPE(QImageData_create, size, format);
 
    int width = size.width();
    int height = size.height();
    int depth = qt_depthForFormat(format);
    auto params = calculateImageParameters(width, height, depth);
    if (!params.isValid())
        return nullptr;
 
    auto d = std::make_unique<QImageData>();
 
    switch (format) {
    case QImage::Format_Mono:
    case QImage::Format_MonoLSB:
        d->colortable.resize(2);
        d->colortable[0] = QColor(Qt::black).rgba();
        d->colortable[1] = QColor(Qt::white).rgba();
        break;
    default:
        break;
    }
 
    d->width = width;
    d->height = height;
    d->depth = depth;
    d->format = format;
    d->has_alpha_clut = false;
    d->is_cached = false;
 
    d->bytes_per_line = params.bytesPerLine;
    d->nbytes = params.totalSize;
    d->data  = (uchar *)malloc(d->nbytes);
 
    if (!d->data)
        return nullptr;
 
    d->ref.ref();
    return d.release();
}
 
QImageData::~QImageData()
{
    if (cleanupFunction)
        cleanupFunction(cleanupInfo);
    if (is_cached)
        QImagePixmapCleanupHooks::executeImageHooks((((qint64) ser_no) << 32) | ((qint64) detach_no));
    delete paintEngine;
    if (data && own_data)
        free(data);
    data = nullptr;
}
 
#if defined(_M_ARM) && defined(_MSC_VER)
#pragma optimize("", off)
#endif
 
bool QImageData::checkForAlphaPixels() const
{
    bool has_alpha_pixels = false;
 
    switch (format) {
 
    case QImage::Format_Mono:
    case QImage::Format_MonoLSB:
    case QImage::Format_Indexed8:
        has_alpha_pixels = has_alpha_clut;
        break;
    case QImage::Format_Alpha8:
        has_alpha_pixels = true;
        break;
    case QImage::Format_ARGB32:
    case QImage::Format_ARGB32_Premultiplied: {
        const uchar *bits = data;
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            uint alphaAnd = 0xff000000;
            for (int x=0; x<width; ++x)
                alphaAnd &= reinterpret_cast<const uint*>(bits)[x];
            has_alpha_pixels = (alphaAnd != 0xff000000);
            bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_RGBA8888:
    case QImage::Format_RGBA8888_Premultiplied: {
        const uchar *bits = data;
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            uchar alphaAnd = 0xff;
            for (int x=0; x<width; ++x)
                alphaAnd &= bits[x * 4+ 3];
            has_alpha_pixels = (alphaAnd != 0xff);
            bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_A2BGR30_Premultiplied:
    case QImage::Format_A2RGB30_Premultiplied: {
        const uchar *bits = data;
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            uint alphaAnd = 0xc0000000;
            for (int x=0; x<width; ++x)
                alphaAnd &= reinterpret_cast<const uint*>(bits)[x];
            has_alpha_pixels = (alphaAnd != 0xc0000000);
            bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_ARGB8555_Premultiplied:
    case QImage::Format_ARGB8565_Premultiplied: {
        const uchar *bits = data;
        const uchar *end_bits = data + bytes_per_line;
 
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            uchar alphaAnd = 0xff;
            while (bits < end_bits) {
                alphaAnd &= bits[0];
                bits += 3;
            }
            has_alpha_pixels = (alphaAnd != 0xff);
            bits = end_bits;
            end_bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_ARGB6666_Premultiplied: {
        const uchar *bits = data;
        const uchar *end_bits = data + bytes_per_line;
 
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            uchar alphaAnd = 0xfc;
            while (bits < end_bits) {
                alphaAnd &= bits[0];
                bits += 3;
            }
            has_alpha_pixels = (alphaAnd != 0xfc);
            bits = end_bits;
            end_bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_ARGB4444_Premultiplied: {
        const uchar *bits = data;
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            ushort alphaAnd = 0xf000;
            for (int x=0; x<width; ++x)
                alphaAnd &= reinterpret_cast<const ushort*>(bits)[x];
            has_alpha_pixels = (alphaAnd != 0xf000);
            bits += bytes_per_line;
        }
    } break;
    case QImage::Format_RGBA64:
    case QImage::Format_RGBA64_Premultiplied: {
        uchar *bits = data;
        for (int y=0; y<height && !has_alpha_pixels; ++y) {
            for (int x=0; x<width; ++x) {
                has_alpha_pixels |= !(((QRgba64 *)bits)[x].isOpaque());
            }
            bits += bytes_per_line;
        }
    } break;
    case QImage::Format_RGBA16FPx4:
    case QImage::Format_RGBA16FPx4_Premultiplied: {
        uchar *bits = data;
        for (int y = 0; y < height && !has_alpha_pixels; ++y) {
            for (int x = 0; x < width; ++x)
                has_alpha_pixels |= ((qfloat16 *)bits)[x * 4 + 3] < 1.0f;
            bits += bytes_per_line;
        }
    } break;
    case QImage::Format_RGBA32FPx4:
    case QImage::Format_RGBA32FPx4_Premultiplied: {
        uchar *bits = data;
        for (int y = 0; y < height && !has_alpha_pixels; ++y) {
            for (int x = 0; x < width; ++x)
                has_alpha_pixels |= ((float *)bits)[x * 4 + 3] < 1.0f;
            bits += bytes_per_line;
        }
    } break;
 
    case QImage::Format_RGB32:
    case QImage::Format_RGB16:
    case QImage::Format_RGB444:
    case QImage::Format_RGB555:
    case QImage::Format_RGB666:
    case QImage::Format_RGB888:
    case QImage::Format_BGR888:
    case QImage::Format_RGBX8888:
    case QImage::Format_BGR30:
    case QImage::Format_RGB30:
    case QImage::Format_Grayscale8:
    case QImage::Format_Grayscale16:
    case QImage::Format_RGBX64:
    case QImage::Format_RGBX16FPx4:
    case QImage::Format_RGBX32FPx4:
        break;
    case QImage::Format_Invalid:
    case QImage::NImageFormats:
        Q_UNREACHABLE();
        break;
    }
 
    return has_alpha_pixels;
}
#if defined(_M_ARM) && defined(_MSC_VER)
#pragma optimize("", on)
#endif
 
/*****************************************************************************
  QImage member functions
 *****************************************************************************/
 
QImage::QImage() noexcept
    : QPaintDevice()
{
    d = nullptr;
}
 
QImage::QImage(int width, int height, Format format)
    : QImage(QSize(width, height), format)
{
}
 
QImage::QImage(const QSize &size, Format format)
    : QPaintDevice()
{
    d = QImageData::create(size, format);
}
 
 
 
QImageData *QImageData::create(uchar *data, int width, int height,  qsizetype bpl, QImage::Format format, bool readOnly, QImageCleanupFunction cleanupFunction, void *cleanupInfo)
{
    if (width <= 0 || height <= 0 || !data || format <= QImage::Format_Invalid || format >= QImage::NImageFormats)
        return nullptr;
 
    const int depth = qt_depthForFormat(format);
    auto params = calculateImageParameters(width, height, depth);
    if (!params.isValid())
        return nullptr;
 
    if (bpl > 0) {
        // can't overflow, because has calculateImageParameters already done this multiplication
        const qsizetype min_bytes_per_line = (qsizetype(width) * depth + 7)/8;
        if (bpl < min_bytes_per_line)
            return nullptr;
 
        // recalculate the total with this value
        params.bytesPerLine = bpl;
        if (mul_overflow<qsizetype>(bpl, height, &params.totalSize))
            return nullptr;
    }
 
    QImageData *d = new QImageData;
    d->ref.ref();
 
    d->own_data = false;
    d->ro_data = readOnly;
    d->data = data;
    d->width = width;
    d->height = height;
    d->depth = depth;
    d->format = format;
 
    d->bytes_per_line = params.bytesPerLine;
    d->nbytes = params.totalSize;
 
    d->cleanupFunction = cleanupFunction;
    d->cleanupInfo = cleanupInfo;
 
    return d;
}
 
QImage::QImage(uchar* data, int width, int height, Format format, QImageCleanupFunction cleanupFunction, void *cleanupInfo)
    : QPaintDevice()
{
    d = QImageData::create(data, width, height, 0, format, false, cleanupFunction, cleanupInfo);
}
 
QImage::QImage(const uchar* data, int width, int height, Format format, QImageCleanupFunction cleanupFunction, void *cleanupInfo)
    : QPaintDevice()
{
    d = QImageData::create(const_cast<uchar*>(data), width, height, 0, format, true, cleanupFunction, cleanupInfo);
}
 
QImage::QImage(uchar *data, int width, int height, qsizetype bytesPerLine, Format format, QImageCleanupFunction cleanupFunction, void *cleanupInfo)
    :QPaintDevice()
{
    d = QImageData::create(data, width, height, bytesPerLine, format, false, cleanupFunction, cleanupInfo);
}
 
QImage::QImage(const uchar *data, int width, int height, qsizetype bytesPerLine, Format format, QImageCleanupFunction cleanupFunction, void *cleanupInfo)
    :QPaintDevice()
{
    d = QImageData::create(const_cast<uchar*>(data), width, height, bytesPerLine, format, true, cleanupFunction, cleanupInfo);
}
 
QImage::QImage(const QString &fileName, const char *format)
    : QPaintDevice()
{
    d = nullptr;
    load(fileName, format);
}
 
#ifndef QT_NO_IMAGEFORMAT_XPM
extern bool qt_read_xpm_image_or_array(QIODevice *device, const char * const *source, QImage &image);
 
QImage::QImage(const char * const xpm[])
    : QPaintDevice()
{
    d = nullptr;
    if (!xpm)
        return;
    if (!qt_read_xpm_image_or_array(nullptr, xpm, *this))
        // Issue: Warning because the constructor may be ambiguous
        qWarning("QImage::QImage(), XPM is not supported");
}
#endif // QT_NO_IMAGEFORMAT_XPM
 
QImage::QImage(const QImage &image)
    : QPaintDevice()
{
    if (image.paintingActive()) {
        d = nullptr;
        image.copy().swap(*this);
    } else {
        d = image.d;
        if (d)
            d->ref.ref();
    }
}
 
QImage::~QImage()
{
    if (d && !d->ref.deref())
        delete d;
}
 
QImage &QImage::operator=(const QImage &image)
{
    if (image.paintingActive()) {
        operator=(image.copy());
    } else {
        if (image.d)
            image.d->ref.ref();
        if (d && !d->ref.deref())
            delete d;
        d = image.d;
    }
    return *this;
}
 
int QImage::devType() const
{
    return QInternal::Image;
}
 
QImage::operator QVariant() const
{
    return QVariant::fromValue(*this);
}
 
void QImage::detach()
{
    if (d) {
        if (d->is_cached && d->ref.loadRelaxed() == 1)
            QImagePixmapCleanupHooks::executeImageHooks(cacheKey());
 
        if (d->ref.loadRelaxed() != 1 || d->ro_data)
            *this = copy();
 
        if (d)
            ++d->detach_no;
    }
}
 
 
static void copyPhysicalMetadata(QImageData *dst, const QImageData *src)
{
    dst->dpmx = src->dpmx;
    dst->dpmy = src->dpmy;
    dst->devicePixelRatio = src->devicePixelRatio;
}
 
static void copyMetadata(QImageData *dst, const QImageData *src)
{
    // Doesn't copy colortable and alpha_clut, or offset.
    copyPhysicalMetadata(dst, src);
    dst->text = src->text;
    dst->colorSpace = src->colorSpace;
}
 
static void copyMetadata(QImage *dst, const QImage &src)
{
    dst->setDotsPerMeterX(src.dotsPerMeterX());
    dst->setDotsPerMeterY(src.dotsPerMeterY());
    dst->setDevicePixelRatio(src.devicePixelRatio());
    const auto textKeys = src.textKeys();
    for (const auto &key: textKeys)
        dst->setText(key, src.text(key));
 
}
 
QImage QImage::copy(const QRect& r) const
{
    Q_TRACE_SCOPE(QImage_copy, r);
    if (!d)
        return QImage();
 
    if (r.isNull()) {
        QImage image(d->width, d->height, d->format);
        if (image.isNull())
            return image;
 
        // Qt for Embedded Linux can create images with non-default bpl
        // make sure we don't crash.
        if (image.d->nbytes != d->nbytes) {
            qsizetype bpl = qMin(bytesPerLine(), image.bytesPerLine());
            for (int i = 0; i < height(); i++)
                memcpy(image.scanLine(i), scanLine(i), bpl);
        } else
            memcpy(image.bits(), bits(), d->nbytes);
        image.d->colortable = d->colortable;
        image.d->offset = d->offset;
        image.d->has_alpha_clut = d->has_alpha_clut;
        copyMetadata(image.d, d);
        return image;
    }
 
    int x = r.x();
    int y = r.y();
    int w = r.width();
    int h = r.height();
 
    int dx = 0;
    int dy = 0;
    if (w <= 0 || h <= 0)
        return QImage();
 
    QImage image(w, h, d->format);
    if (image.isNull())
        return image;
 
    if (x < 0 || y < 0 || x + w > d->width || y + h > d->height) {
        // bitBlt will not cover entire image - clear it.
        image.fill(0);
        if (x < 0) {
            dx = -x;
            x = 0;
        }
        if (y < 0) {
            dy = -y;
            y = 0;
        }
    }
 
    image.d->colortable = d->colortable;
 
    int pixels_to_copy = qMax(w - dx, 0);
    if (x > d->width)
        pixels_to_copy = 0;
    else if (pixels_to_copy > d->width - x)
        pixels_to_copy = d->width - x;
    int lines_to_copy = qMax(h - dy, 0);
    if (y > d->height)
        lines_to_copy = 0;
    else if (lines_to_copy > d->height - y)
        lines_to_copy = d->height - y;
 
    bool byteAligned = true;
    if (d->format == Format_Mono || d->format == Format_MonoLSB)
        byteAligned = !(dx & 7) && !(x & 7) && !(pixels_to_copy & 7);
 
    if (byteAligned) {
        const uchar *src = d->data + ((x * d->depth) >> 3) + y * d->bytes_per_line;
        uchar *dest = image.d->data + ((dx * d->depth) >> 3) + dy * image.d->bytes_per_line;
        const qsizetype bytes_to_copy = (qsizetype(pixels_to_copy) * d->depth) >> 3;
        for (int i = 0; i < lines_to_copy; ++i) {
            memcpy(dest, src, bytes_to_copy);
            src += d->bytes_per_line;
            dest += image.d->bytes_per_line;
        }
    } else if (d->format == Format_Mono) {
        const uchar *src = d->data + y * d->bytes_per_line;
        uchar *dest = image.d->data + dy * image.d->bytes_per_line;
        for (int i = 0; i < lines_to_copy; ++i) {
            for (int j = 0; j < pixels_to_copy; ++j) {
                if (src[(x + j) >> 3] & (0x80 >> ((x + j) & 7)))
                    dest[(dx + j) >> 3] |= (0x80 >> ((dx + j) & 7));
                else
                    dest[(dx + j) >> 3] &= ~(0x80 >> ((dx + j) & 7));
            }
            src += d->bytes_per_line;
            dest += image.d->bytes_per_line;
        }
    } else { // Format_MonoLSB
        Q_ASSERT(d->format == Format_MonoLSB);
        const uchar *src = d->data + y * d->bytes_per_line;
        uchar *dest = image.d->data + dy * image.d->bytes_per_line;
        for (int i = 0; i < lines_to_copy; ++i) {
            for (int j = 0; j < pixels_to_copy; ++j) {
                if (src[(x + j) >> 3] & (0x1 << ((x + j) & 7)))
                    dest[(dx + j) >> 3] |= (0x1 << ((dx + j) & 7));
                else
                    dest[(dx + j) >> 3] &= ~(0x1 << ((dx + j) & 7));
            }
            src += d->bytes_per_line;
            dest += image.d->bytes_per_line;
        }
    }
 
    copyMetadata(image.d, d);
    image.d->offset = offset();
    image.d->has_alpha_clut = d->has_alpha_clut;
    return image;
}
 
 
bool QImage::isNull() const
{
    return !d;
}
 
int QImage::width() const
{
    return d ? d->width : 0;
}
 
int QImage::height() const
{
    return d ? d->height : 0;
}
 
QSize QImage::size() const
{
    return d ? QSize(d->width, d->height) : QSize(0, 0);
}
 
QRect QImage::rect() const
{
    return d ? QRect(0, 0, d->width, d->height) : QRect();
}
 
int QImage::depth() const
{
    return d ? d->depth : 0;
}
 
int QImage::colorCount() const
{
    return d ? d->colortable.size() : 0;
}
 
void QImage::setColorTable(const QList<QRgb> &colors)
{
    if (!d)
        return;
    detach();
 
    // In case detach() ran out of memory
    if (!d)
        return;
 
    d->colortable = colors;
    d->has_alpha_clut = false;
    for (int i = 0; i < d->colortable.size(); ++i) {
        if (qAlpha(d->colortable.at(i)) != 255) {
            d->has_alpha_clut = true;
            break;
        }
    }
}
 
QList<QRgb> QImage::colorTable() const
{
    return d ? d->colortable : QList<QRgb>();
}
 
qreal QImage::devicePixelRatio() const
{
    if (!d)
        return 1.0;
    return d->devicePixelRatio;
}
 
void QImage::setDevicePixelRatio(qreal scaleFactor)
{
    if (!d)
        return;
 
    if (scaleFactor == d->devicePixelRatio)
        return;
 
    detach();
    if (d)
        d->devicePixelRatio = scaleFactor;
}
 
QSizeF QImage::deviceIndependentSize() const
{
    if (!d)
        return QSizeF(0, 0);
    return QSizeF(d->width, d->height) / d->devicePixelRatio;
}
 
 
qsizetype QImage::sizeInBytes() const
{
    return d ? d->nbytes : 0;
}
 
qsizetype QImage::bytesPerLine() const
{
    return d ? d->bytes_per_line : 0;
}
 
 
QRgb QImage::color(int i) const
{
    Q_ASSERT(i < colorCount());
    return d ? d->colortable.at(i) : QRgb(uint(-1));
}
 
void QImage::setColor(int i, QRgb c)
{
    if (!d)
        return;
    if (i < 0 || d->depth > 8 || i >= 1<<d->depth) {
        qWarning("QImage::setColor: Index out of bound %d", i);
        return;
    }
    detach();
 
    // In case detach() run out of memory
    if (!d)
        return;
 
    if (i >= d->colortable.size())
        setColorCount(i+1);
    d->colortable[i] = c;
    d->has_alpha_clut |= (qAlpha(c) != 255);
}
 
uchar *QImage::scanLine(int i)
{
    if (!d)
        return nullptr;
 
    detach();
 
    // In case detach() ran out of memory
    if (!d)
        return nullptr;
 
    return d->data + i * d->bytes_per_line;
}
 
const uchar *QImage::scanLine(int i) const
{
    if (!d)
        return nullptr;
 
    Q_ASSERT(i >= 0 && i < height());
    return d->data + i * d->bytes_per_line;
}
 
 
const uchar *QImage::constScanLine(int i) const
{
    if (!d)
        return nullptr;
 
    Q_ASSERT(i >= 0 && i < height());
    return d->data + i * d->bytes_per_line;
}
 
uchar *QImage::bits()
{
    if (!d)
        return nullptr;
    detach();
 
    // In case detach ran out of memory...
    if (!d)
        return nullptr;
 
    return d->data;
}
 
const uchar *QImage::bits() const
{
    return d ? d->data : nullptr;
}
 
 
const uchar *QImage::constBits() const
{
    return d ? d->data : nullptr;
}
 
void QImage::fill(uint pixel)
{
    if (!d)
        return;
 
    detach();
 
    // In case detach() ran out of memory
    if (!d)
        return;
 
    if (d->depth == 1 || d->depth == 8) {
        int w = d->width;
        if (d->depth == 1) {
            if (pixel & 1)
                pixel = 0xffffffff;
            else
                pixel = 0;
            w = (w + 7) / 8;
        } else {
            pixel &= 0xff;
        }
        qt_rectfill<quint8>(d->data, pixel, 0, 0,
                            w, d->height, d->bytes_per_line);
        return;
    } else if (d->depth == 16) {
        if (d->format == Format_RGB444)
            pixel |= 0xf000;
        qt_rectfill<quint16>(reinterpret_cast<quint16*>(d->data), pixel,
                             0, 0, d->width, d->height, d->bytes_per_line);
        return;
    } else if (d->depth == 24) {
        if (d->format == Format_RGB666)
            pixel |= 0xfc0000;
        qt_rectfill<quint24>(reinterpret_cast<quint24*>(d->data), pixel,
                             0, 0, d->width, d->height, d->bytes_per_line);
        return;
    } else if (d->format >= QImage::Format_RGBX64 && d->format <= QImage::Format_RGBA64_Premultiplied) {
        qt_rectfill<quint64>(reinterpret_cast<quint64*>(d->data), QRgba64::fromArgb32(pixel),
                             0, 0, d->width, d->height, d->bytes_per_line);
        return;
    } else if (d->format >= QImage::Format_RGBX16FPx4 && d->format <= QImage::Format_RGBA16FPx4_Premultiplied) {
        quint64 cu;
        QRgbaFloat16 cf = QRgbaFloat16::fromArgb32(pixel);
        ::memcpy(&cu, &cf, sizeof(quint64));
        qt_rectfill<quint64>(reinterpret_cast<quint64*>(d->data), cu,
                             0, 0, d->width, d->height, d->bytes_per_line);
        return;
    } else if (d->format >= QImage::Format_RGBX32FPx4 && d->format <= QImage::Format_RGBA32FPx4_Premultiplied) {
        QRgbaFloat32 cf = QRgbaFloat32::fromArgb32(pixel);
        uchar *data = d->data;
        for (int y = 0; y < d->height; ++y) {
            QRgbaFloat32 *line = reinterpret_cast<QRgbaFloat32 *>(data);
            for (int x = 0; x < d->width; ++x)
                line[x] = cf;
            data += d->bytes_per_line;
        }
        return;
    }
    Q_ASSERT(d->depth == 32);
 
    if (d->format == Format_RGB32)
        pixel |= 0xff000000;
    if (d->format == Format_RGBX8888)
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
        pixel |= 0xff000000;
#else
        pixel |= 0x000000ff;
#endif
    if (d->format == Format_BGR30 || d->format == Format_RGB30)
        pixel |= 0xc0000000;
 
    qt_rectfill<uint>(reinterpret_cast<uint*>(d->data), pixel,
                      0, 0, d->width, d->height, d->bytes_per_line);
}
 
 
void QImage::fill(Qt::GlobalColor color)
{
    fill(QColor(color));
}
 
 
 
void QImage::fill(const QColor &color)
{
    if (!d)
        return;
    detach();
 
    // In case we run out of memory
    if (!d)
        return;
 
    QRgba64 opaque = color.rgba64();
    opaque.setAlpha(65535);
    switch (d->format) {
    case QImage::Format_RGB32:
    case QImage::Format_ARGB32:
        fill(color.rgba());
        break;
    case QImage::Format_ARGB32_Premultiplied:
        fill(qPremultiply(color.rgba()));
        break;
    case QImage::Format_RGBX8888:
        fill(ARGB2RGBA(color.rgba() | 0xff000000));
        break;
    case QImage::Format_RGBA8888:
        fill(ARGB2RGBA(color.rgba()));
        break;
    case QImage::Format_RGBA8888_Premultiplied:
        fill(ARGB2RGBA(qPremultiply(color.rgba())));
        break;
    case QImage::Format_BGR30:
        fill(qConvertRgb64ToRgb30<PixelOrderBGR>(opaque));
        break;
    case QImage::Format_RGB30:
        fill(qConvertRgb64ToRgb30<PixelOrderRGB>(opaque));
        break;
    case QImage::Format_RGB16:
        fill((uint) qConvertRgb32To16(color.rgba()));
        break;
    case QImage::Format_Indexed8: {
        uint pixel = 0;
        for (int i=0; i<d->colortable.size(); ++i) {
            if (color.rgba() == d->colortable.at(i)) {
                pixel = i;
                break;
            }
        }
        fill(pixel);
        break;
    }
    case QImage::Format_Mono:
    case QImage::Format_MonoLSB:
        if (color == Qt::color1)
            fill((uint) 1);
        else
            fill((uint) 0);
        break;
    case QImage::Format_RGBX64:
        qt_rectfill<quint64>(reinterpret_cast<quint64*>(d->data), opaque,
                             0, 0, d->width, d->height, d->bytes_per_line);
        break;
    case QImage::Format_RGBA64:
        qt_rectfill<quint64>(reinterpret_cast<quint64*>(d->data), color.rgba64(),
                             0, 0, d->width, d->height, d->bytes_per_line);
        break;
    case QImage::Format_RGBA64_Premultiplied:
        qt_rectfill<quint64>(reinterpret_cast<quint64 *>(d->data), color.rgba64().premultiplied(),
                             0, 0, d->width, d->height, d->bytes_per_line);
        break;
    default: {
        QPainter p(this);
        p.setCompositionMode(QPainter::CompositionMode_Source);
        p.fillRect(rect(), color);
    }}
}
 
 
 
void QImage::invertPixels(InvertMode mode)
{
    if (!d)
        return;
 
    detach();
 
    // In case detach() ran out of memory
    if (!d)
        return;
 
    QImage::Format originalFormat = d->format;
    // Inverting premultiplied pixels would produce invalid image data.
    if (hasAlphaChannel() && qPixelLayouts[d->format].premultiplied) {
        if (d->format == QImage::Format_RGBA16FPx4_Premultiplied) {
            if (!d->convertInPlace(QImage::Format_RGBA16FPx4, { }))
                *this = convertToFormat(QImage::Format_RGBA16FPx4);
        } else if (d->format == QImage::Format_RGBA32FPx4_Premultiplied) {
            if (!d->convertInPlace(QImage::Format_RGBA32FPx4, { }))
                *this = convertToFormat(QImage::Format_RGBA32FPx4);
        } else if (depth() > 32) {
            if (!d->convertInPlace(QImage::Format_RGBA64, { }))
                *this = convertToFormat(QImage::Format_RGBA64);
        } else {
            if (!d->convertInPlace(QImage::Format_ARGB32, { }))
                *this = convertToFormat(QImage::Format_ARGB32);
        }
    }
 
    if (depth() < 32) {
        // This assumes no alpha-channel as the only formats with non-premultipled alpha are 32bit.
        qsizetype bpl = (qsizetype(d->width) * d->depth + 7) / 8;
        int pad = d->bytes_per_line - bpl;
        uchar *sl = d->data;
        for (int y=0; y<d->height; ++y) {
            for (qsizetype x=0; x<bpl; ++x)
                *sl++ ^= 0xff;
            sl += pad;
        }
    } else if (format() >= QImage::Format_RGBX16FPx4 && format() <= QImage::Format_RGBA16FPx4_Premultiplied) {
        qfloat16 *p = reinterpret_cast<qfloat16 *>(d->data);
        qfloat16 *end = reinterpret_cast<qfloat16 *>(d->data + d->nbytes);
        while (p < end) {
            p[0] = 1.0f - p[0];
            p[1] = 1.0f - p[1];
            p[2] = 1.0f - p[2];
            if (mode == InvertRgba)
                p[3] = 1.0f - p[3];
            p += 4;
        }
    } else if (format() >= QImage::Format_RGBX32FPx4 && format() <= QImage::Format_RGBA32FPx4_Premultiplied) {
        uchar *data = d->data;
        for (int y = 0; y < d->height; ++y) {
            float *p = reinterpret_cast<float *>(data);
            for (int x = 0; x < d->width; ++x) {
                p[0] = 1.0f - p[0];
                p[1] = 1.0f - p[1];
                p[2] = 1.0f - p[2];
                if (mode == InvertRgba)
                    p[3] = 1.0f - p[3];
                p += 4;
            }
            data += d->bytes_per_line;
        }
    } else if (depth() == 64) {
        quint16 *p = (quint16*)d->data;
        quint16 *end = (quint16*)(d->data + d->nbytes);
        quint16 xorbits = 0xffff;
        while (p < end) {
            *p++ ^= xorbits;
            *p++ ^= xorbits;
            *p++ ^= xorbits;
            if (mode == InvertRgba)
                *p++ ^= xorbits;
            else
                p++;
        }
    } else {
        quint32 *p = (quint32*)d->data;
        quint32 *end = (quint32*)(d->data + d->nbytes);
        quint32 xorbits = 0xffffffff;
        switch (d->format) {
        case QImage::Format_RGBA8888:
            if (mode == InvertRgba)
                break;
            Q_FALLTHROUGH();
        case QImage::Format_RGBX8888:
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
            xorbits = 0xffffff00;
            break;
#else
            xorbits = 0x00ffffff;
            break;
#endif
        case QImage::Format_ARGB32:
            if (mode == InvertRgba)
                break;
            Q_FALLTHROUGH();
        case QImage::Format_RGB32:
            xorbits = 0x00ffffff;
            break;
        case QImage::Format_BGR30:
        case QImage::Format_RGB30:
            xorbits = 0x3fffffff;
            break;
        default:
            Q_UNREACHABLE();
            xorbits = 0;
            break;
        }
        while (p < end)
            *p++ ^= xorbits;
    }
 
    if (originalFormat != d->format) {
        if (!d->convertInPlace(originalFormat, { }))
            *this = convertToFormat(originalFormat);
    }
}
 
// Windows defines these
#if defined(write)
# undef write
#endif
#if defined(close)
# undef close
#endif
#if defined(read)
# undef read
#endif
 
void QImage::setColorCount(int colorCount)
{
    if (!d) {
        qWarning("QImage::setColorCount: null image");
        return;
    }
 
    detach();
 
    // In case detach() ran out of memory
    if (!d)
        return;
 
    if (colorCount == d->colortable.size())
        return;
    if (colorCount <= 0) {                        // use no color table
        d->colortable.clear();
        return;
    }
    int nc = d->colortable.size();
    d->colortable.resize(colorCount);
    for (int i = nc; i < colorCount; ++i)
        d->colortable[i] = 0;
}
 
QImage::Format QImage::format() const
{
    return d ? d->format : Format_Invalid;
}
 
QImage QImage::convertToFormat_helper(Format format, Qt::ImageConversionFlags flags) const
{
    if (!d || d->format == format)
        return *this;
 
    if (d->format == Format_Invalid || format <= Format_Invalid || format >= NImageFormats)
        return QImage();
 
    const QPixelLayout *destLayout = &qPixelLayouts[format];
    Image_Converter converter = qimage_converter_map[d->format][format];
    if (!converter && format > QImage::Format_Indexed8 && d->format > QImage::Format_Indexed8) {
        if (qt_highColorPrecision(d->format, !destLayout->hasAlphaChannel)
                && qt_highColorPrecision(format, !hasAlphaChannel())) {
#if QT_CONFIG(raster_fp)
            if (qt_fpColorPrecision(d->format) && qt_fpColorPrecision(format))
                converter = convert_generic_over_rgba32f;
            else
#endif
                converter = convert_generic_over_rgb64;
        } else
            converter = convert_generic;
    }
    if (converter) {
        QImage image(d->width, d->height, format);
 
        QIMAGE_SANITYCHECK_MEMORY(image);
 
        image.d->offset = offset();
        copyMetadata(image.d, d);
 
        converter(image.d, d, flags);
        return image;
    }
 
    // Convert indexed formats over ARGB32 or RGB32 to the final format.
    Q_ASSERT(format != QImage::Format_ARGB32 && format != QImage::Format_RGB32);
    Q_ASSERT(d->format != QImage::Format_ARGB32 && d->format != QImage::Format_RGB32);
 
    if (!hasAlphaChannel())
        return convertToFormat(Format_RGB32, flags).convertToFormat(format, flags);
 
    return convertToFormat(Format_ARGB32, flags).convertToFormat(format, flags);
}
 
bool QImage::convertToFormat_inplace(Format format, Qt::ImageConversionFlags flags)
{
    return d && d->convertInPlace(format, flags);
}
 
static inline int pixel_distance(QRgb p1, QRgb p2) {
    int r1 = qRed(p1);
    int g1 = qGreen(p1);
    int b1 = qBlue(p1);
    int a1 = qAlpha(p1);
 
    int r2 = qRed(p2);
    int g2 = qGreen(p2);
    int b2 = qBlue(p2);
    int a2 = qAlpha(p2);
 
    return abs(r1 - r2) + abs(g1 - g2) + abs(b1 - b2) + abs(a1 - a2);
}
 
static inline int closestMatch(QRgb pixel, const QList<QRgb> &clut) {
    int idx = 0;
    int current_distance = INT_MAX;
    for (int i=0; i<clut.size(); ++i) {
        int dist = pixel_distance(pixel, clut.at(i));
        if (dist < current_distance) {
            current_distance = dist;
            idx = i;
        }
    }
    return idx;
}
 
static QImage convertWithPalette(const QImage &src, QImage::Format format,
                                 const QList<QRgb> &clut) {
    QImage dest(src.size(), format);
    dest.setColorTable(clut);
 
    copyMetadata(QImageData::get(dest), QImageData::get(src));
 
    int h = src.height();
    int w = src.width();
 
    QHash<QRgb, int> cache;
 
    if (format == QImage::Format_Indexed8) {
        for (int y=0; y<h; ++y) {
            const QRgb *src_pixels = (const QRgb *) src.scanLine(y);
            uchar *dest_pixels = (uchar *) dest.scanLine(y);
            for (int x=0; x<w; ++x) {
                int src_pixel = src_pixels[x];
                int value = cache.value(src_pixel, -1);
                if (value == -1) {
                    value = closestMatch(src_pixel, clut);
                    cache.insert(src_pixel, value);
                }
                dest_pixels[x] = (uchar) value;
            }
        }
    } else {
        QList<QRgb> table = clut;
        table.resize(2);
        for (int y=0; y<h; ++y) {
            const QRgb *src_pixels = (const QRgb *) src.scanLine(y);
            for (int x=0; x<w; ++x) {
                int src_pixel = src_pixels[x];
                int value = cache.value(src_pixel, -1);
                if (value == -1) {
                    value = closestMatch(src_pixel, table);
                    cache.insert(src_pixel, value);
                }
                dest.setPixel(x, y, value);
            }
        }
    }
 
    return dest;
}
 
QImage QImage::convertToFormat(Format format, const QList<QRgb> &colorTable, Qt::ImageConversionFlags flags) const
{
    if (!d || d->format == format)
        return *this;
 
    if (format <= QImage::Format_Invalid || format >= QImage::NImageFormats)
        return QImage();
    if (format <= QImage::Format_Indexed8)
        return convertWithPalette(convertToFormat(QImage::Format_ARGB32, flags), format, colorTable);
 
    return convertToFormat(format, flags);
}
 
bool QImage::reinterpretAsFormat(Format format)
{
    if (!d)
        return false;
    if (d->format == format)
        return true;
    if (qt_depthForFormat(format) != qt_depthForFormat(d->format))
        return false;
    if (!isDetached()) { // Detach only if shared, not for read-only data.
        QImageData *oldD = d;
        detach();
        // In case detach() ran out of memory
        if (!d) {
            d = oldD;
            d->ref.ref();
            return false;
        }
    }
 
    d->format = format;
    return true;
}
 
void QImage::convertTo(Format format, Qt::ImageConversionFlags flags)
{
    if (!d || format <= QImage::Format_Invalid || format >= QImage::NImageFormats)
        return;
 
    if (d->format == format)
        return;
 
    detach();
    if (convertToFormat_inplace(format, flags))
        return;
 
    *this = convertToFormat_helper(format, flags);
}
 
bool QImage::valid(int x, int y) const
{
    return d
        && x >= 0 && x < d->width
        && y >= 0 && y < d->height;
}
 
int QImage::pixelIndex(int x, int y) const
{
    if (!d || x < 0 || x >= d->width || y < 0 || y >= height()) {
        qWarning("QImage::pixelIndex: coordinate (%d,%d) out of range", x, y);
        return -12345;
    }
    const uchar * s = scanLine(y);
    switch(d->format) {
    case Format_Mono:
        return (*(s + (x >> 3)) >> (7- (x & 7))) & 1;
    case Format_MonoLSB:
        return (*(s + (x >> 3)) >> (x & 7)) & 1;
    case Format_Indexed8:
        return (int)s[x];
    default:
        qWarning("QImage::pixelIndex: Not applicable for %d-bpp images (no palette)", d->depth);
    }
    return 0;
}
 
 
QRgb QImage::pixel(int x, int y) const
{
    if (!d || x < 0 || x >= d->width || y < 0 || y >= d->height) {
        qWarning("QImage::pixel: coordinate (%d,%d) out of range", x, y);
        return 12345;
    }
 
    const uchar *s = d->data + y * d->bytes_per_line;
 
    int index = -1;
    switch (d->format) {
    case Format_Mono:
        index = (*(s + (x >> 3)) >> (~x & 7)) & 1;
        break;
    case Format_MonoLSB:
        index = (*(s + (x >> 3)) >> (x & 7)) & 1;
        break;
    case Format_Indexed8:
        index = s[x];
        break;
    default:
        break;
    }
    if (index >= 0) {    // Indexed format
        if (index >= d->colortable.size()) {
            qWarning("QImage::pixel: color table index %d out of range.", index);
            return 0;
        }
        return d->colortable.at(index);
    }
 
    switch (d->format) {
    case Format_RGB32:
        return 0xff000000 | reinterpret_cast<const QRgb *>(s)[x];
    case Format_ARGB32: // Keep old behaviour.
    case Format_ARGB32_Premultiplied:
        return reinterpret_cast<const QRgb *>(s)[x];
    case Format_RGBX8888:
    case Format_RGBA8888: // Match ARGB32 behavior.
    case Format_RGBA8888_Premultiplied:
        return RGBA2ARGB(reinterpret_cast<const quint32 *>(s)[x]);
    case Format_BGR30:
    case Format_A2BGR30_Premultiplied:
        return qConvertA2rgb30ToArgb32<PixelOrderBGR>(reinterpret_cast<const quint32 *>(s)[x]);
    case Format_RGB30:
    case Format_A2RGB30_Premultiplied:
        return qConvertA2rgb30ToArgb32<PixelOrderRGB>(reinterpret_cast<const quint32 *>(s)[x]);
    case Format_RGB16:
        return qConvertRgb16To32(reinterpret_cast<const quint16 *>(s)[x]);
    case Format_RGBX64:
    case Format_RGBA64: // Match ARGB32 behavior.
    case Format_RGBA64_Premultiplied:
        return reinterpret_cast<const QRgba64 *>(s)[x].toArgb32();
    case Format_RGBX16FPx4:
    case Format_RGBA16FPx4: // Match ARGB32 behavior.
    case Format_RGBA16FPx4_Premultiplied:
        return reinterpret_cast<const QRgbaFloat16 *>(s)[x].toArgb32();
    case Format_RGBX32FPx4:
    case Format_RGBA32FPx4: // Match ARGB32 behavior.
    case Format_RGBA32FPx4_Premultiplied:
        return reinterpret_cast<const QRgbaFloat32 *>(s)[x].toArgb32();
    default:
        break;
    }
    const QPixelLayout *layout = &qPixelLayouts[d->format];
    uint result;
    return *layout->fetchToARGB32PM(&result, s, x, 1, nullptr, nullptr);
}
 
void QImage::setPixel(int x, int y, uint index_or_rgb)
{
    if (!d || x < 0 || x >= width() || y < 0 || y >= height()) {
        qWarning("QImage::setPixel: coordinate (%d,%d) out of range", x, y);
        return;
    }
    // detach is called from within scanLine
    uchar * s = scanLine(y);
    switch(d->format) {
    case Format_Mono:
    case Format_MonoLSB:
        if (index_or_rgb > 1) {
            qWarning("QImage::setPixel: Index %d out of range", index_or_rgb);
        } else if (format() == Format_MonoLSB) {
            if (index_or_rgb==0)
                *(s + (x >> 3)) &= ~(1 << (x & 7));
            else
                *(s + (x >> 3)) |= (1 << (x & 7));
        } else {
            if (index_or_rgb==0)
                *(s + (x >> 3)) &= ~(1 << (7-(x & 7)));
            else
                *(s + (x >> 3)) |= (1 << (7-(x & 7)));
        }
        return;
    case Format_Indexed8:
        if (index_or_rgb >= (uint)d->colortable.size()) {
            qWarning("QImage::setPixel: Index %d out of range", index_or_rgb);
            return;
        }
        s[x] = index_or_rgb;
        return;
    case Format_RGB32:
        //make sure alpha is 255, we depend on it in qdrawhelper for cases
        // when image is set as a texture pattern on a qbrush
        ((uint *)s)[x] = 0xff000000 | index_or_rgb;
        return;
    case Format_ARGB32:
    case Format_ARGB32_Premultiplied:
        ((uint *)s)[x] = index_or_rgb;
        return;
    case Format_RGB16:
        ((quint16 *)s)[x] = qConvertRgb32To16(index_or_rgb);
        return;
    case Format_RGBX8888:
        ((uint *)s)[x] = ARGB2RGBA(0xff000000 | index_or_rgb);
        return;
    case Format_RGBA8888:
    case Format_RGBA8888_Premultiplied:
        ((uint *)s)[x] = ARGB2RGBA(index_or_rgb);
        return;
    case Format_BGR30:
        ((uint *)s)[x] = qConvertRgb32ToRgb30<PixelOrderBGR>(index_or_rgb);
        return;
    case Format_A2BGR30_Premultiplied:
        ((uint *)s)[x] = qConvertArgb32ToA2rgb30<PixelOrderBGR>(index_or_rgb);
        return;
    case Format_RGB30:
        ((uint *)s)[x] = qConvertRgb32ToRgb30<PixelOrderRGB>(index_or_rgb);
        return;
    case Format_A2RGB30_Premultiplied:
        ((uint *)s)[x] = qConvertArgb32ToA2rgb30<PixelOrderRGB>(index_or_rgb);
        return;
    case Format_RGBA64:
    case Format_RGBA64_Premultiplied:
        ((QRgba64 *)s)[x] = QRgba64::fromArgb32(index_or_rgb);
        return;
    case Format_RGBX16FPx4:
        ((QRgbaFloat16 *)s)[x] = QRgbaFloat16::fromArgb32(index_or_rgb | 0xff000000);
        return;
    case Format_RGBA16FPx4:
    case Format_RGBA16FPx4_Premultiplied:
        ((QRgbaFloat16 *)s)[x] = QRgbaFloat16::fromArgb32(index_or_rgb);
        return;
    case Format_RGBX32FPx4:
        ((QRgbaFloat32 *)s)[x] = QRgbaFloat32::fromArgb32(index_or_rgb | 0xff000000);
        return;
    case Format_RGBA32FPx4:
    case Format_RGBA32FPx4_Premultiplied:
        ((QRgbaFloat32 *)s)[x] = QRgbaFloat32::fromArgb32(index_or_rgb);
        return;
    case Format_Invalid:
    case NImageFormats:
        Q_ASSERT(false);
        return;
    default:
        break;
    }
 
    const QPixelLayout *layout = &qPixelLayouts[d->format];
    if (!hasAlphaChannel())
        layout->storeFromRGB32(s, &index_or_rgb, x, 1, nullptr, nullptr);
    else
        layout->storeFromARGB32PM(s, &index_or_rgb, x, 1, nullptr, nullptr);
}
 
QColor QImage::pixelColor(int x, int y) const
{
    if (!d || x < 0 || x >= d->width || y < 0 || y >= height()) {
        qWarning("QImage::pixelColor: coordinate (%d,%d) out of range", x, y);
        return QColor();
    }
 
    QRgba64 c;
    const uchar * s = constScanLine(y);
    switch (d->format) {
    case Format_BGR30:
    case Format_A2BGR30_Premultiplied:
        c = qConvertA2rgb30ToRgb64<PixelOrderBGR>(reinterpret_cast<const quint32 *>(s)[x]);
        break;
    case Format_RGB30:
    case Format_A2RGB30_Premultiplied:
        c = qConvertA2rgb30ToRgb64<PixelOrderRGB>(reinterpret_cast<const quint32 *>(s)[x]);
        break;
    case Format_RGBX64:
    case Format_RGBA64:
    case Format_RGBA64_Premultiplied:
        c = reinterpret_cast<const QRgba64 *>(s)[x];
        break;
    case Format_Grayscale16: {
        quint16 v = reinterpret_cast<const quint16 *>(s)[x];
        return QColor(qRgba64(v, v, v, 0xffff));
    }
    case Format_RGBX16FPx4:
    case Format_RGBA16FPx4:
    case Format_RGBA16FPx4_Premultiplied: {
        QRgbaFloat16 p = reinterpret_cast<const QRgbaFloat16 *>(s)[x];
        if (d->format == Format_RGBA16FPx4_Premultiplied)
            p = p.unpremultiplied();
        QColor color;
        color.setRgbF(p.red(), p.green(), p.blue(), p.alpha());
        return color;
    }
    case Format_RGBX32FPx4:
    case Format_RGBA32FPx4:
    case Format_RGBA32FPx4_Premultiplied: {
        QRgbaFloat32 p = reinterpret_cast<const QRgbaFloat32 *>(s)[x];
        if (d->format == Format_RGBA32FPx4_Premultiplied)
            p = p.unpremultiplied();
        QColor color;
        color.setRgbF(p.red(), p.green(), p.blue(), p.alpha());
        return color;
    }
    default:
        c = QRgba64::fromArgb32(pixel(x, y));
        break;
    }
    // QColor is always unpremultiplied
    if (hasAlphaChannel() && qPixelLayouts[d->format].premultiplied)
        c = c.unpremultiplied();
    return QColor(c);
}
 
void QImage::setPixelColor(int x, int y, const QColor &color)
{
    if (!d || x < 0 || x >= width() || y < 0 || y >= height()) {
        qWarning("QImage::setPixelColor: coordinate (%d,%d) out of range", x, y);
        return;
    }
 
    if (!color.isValid()) {
        qWarning("QImage::setPixelColor: color is invalid");
        return;
    }
 
    // QColor is always unpremultiplied
    QRgba64 c = color.rgba64();
    if (!hasAlphaChannel())
        c.setAlpha(65535);
    else if (qPixelLayouts[d->format].premultiplied)
        c = c.premultiplied();
    // detach is called from within scanLine
    uchar * s = scanLine(y);
    switch (d->format) {
    case Format_Mono:
    case Format_MonoLSB:
    case Format_Indexed8:
        qWarning("QImage::setPixelColor: called on monochrome or indexed format");
        return;
    case Format_BGR30:
        ((uint *)s)[x] = qConvertRgb64ToRgb30<PixelOrderBGR>(c) | 0xc0000000;
        return;
    case Format_A2BGR30_Premultiplied:
        ((uint *)s)[x] = qConvertRgb64ToRgb30<PixelOrderBGR>(c);
        return;
    case Format_RGB30:
        ((uint *)s)[x] = qConvertRgb64ToRgb30<PixelOrderRGB>(c) | 0xc0000000;
        return;
    case Format_A2RGB30_Premultiplied:
        ((uint *)s)[x] = qConvertRgb64ToRgb30<PixelOrderRGB>(c);
        return;
    case Format_RGBX64:
    case Format_RGBA64:
    case Format_RGBA64_Premultiplied:
        ((QRgba64 *)s)[x] = c;
        return;
    case Format_RGBX16FPx4:
    case Format_RGBA16FPx4:
    case Format_RGBA16FPx4_Premultiplied: {
        float r, g, b, a;
        color.getRgbF(&r, &g, &b, &a);
        if (d->format == Format_RGBX16FPx4)
            a = 1.0f;
        QRgbaFloat16 c16f{r, g, b, a};
        if (d->format == Format_RGBA16FPx4_Premultiplied)
            c16f = c16f.premultiplied();
        ((QRgbaFloat16 *)s)[x] = c16f;
        return;
    }
    case Format_RGBX32FPx4:
    case Format_RGBA32FPx4:
    case Format_RGBA32FPx4_Premultiplied: {
        float r, g, b, a;
        color.getRgbF(&r, &g, &b, &a);
        if (d->format == Format_RGBX32FPx4)
            a = 1.0f;
        QRgbaFloat32 c32f{r, g, b, a};
        if (d->format == Format_RGBA32FPx4_Premultiplied)
            c32f = c32f.premultiplied();
        ((QRgbaFloat32 *)s)[x] = c32f;
        return;
    }
    default:
        setPixel(x, y, c.toArgb32());
        return;
    }
}
 
bool QImage::allGray() const
{
    if (!d)
        return true;
 
    switch (d->format) {
    case Format_Mono:
    case Format_MonoLSB:
    case Format_Indexed8:
        for (int i = 0; i < d->colortable.size(); ++i) {
            if (!qIsGray(d->colortable.at(i)))
                return false;
        }
        return true;
    case Format_Alpha8:
        return false;
    case Format_Grayscale8:
    case Format_Grayscale16:
        return true;
    case Format_RGB32:
    case Format_ARGB32:
    case Format_ARGB32_Premultiplied:
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
    case Format_RGBX8888:
    case Format_RGBA8888:
    case Format_RGBA8888_Premultiplied:
#endif
        for (int j = 0; j < d->height; ++j) {
            const QRgb *b = (const QRgb *)constScanLine(j);
            for (int i = 0; i < d->width; ++i) {
                if (!qIsGray(b[i]))
                    return false;
            }
        }
        return true;
    case Format_RGB16:
        for (int j = 0; j < d->height; ++j) {
            const quint16 *b = (const quint16 *)constScanLine(j);
            for (int i = 0; i < d->width; ++i) {
                if (!qIsGray(qConvertRgb16To32(b[i])))
                    return false;
            }
        }
        return true;
    default:
        break;
    }
 
    uint buffer[BufferSize];
    const QPixelLayout *layout = &qPixelLayouts[d->format];
    const auto fetch = layout->fetchToARGB32PM;
    for (int j = 0; j < d->height; ++j) {
        const uchar *b = constScanLine(j);
        int x = 0;
        while (x < d->width) {
            int l = qMin(d->width - x, BufferSize);
            const uint *ptr = fetch(buffer, b, x, l, nullptr, nullptr);
            for (int i = 0; i < l; ++i) {
                if (!qIsGray(ptr[i]))
                    return false;
            }
            x += l;
        }
    }
    return true;
}
 
bool QImage::isGrayscale() const
{
    if (!d)
        return false;
 
    if (d->format == QImage::Format_Alpha8)
        return false;
 
    if (d->format == QImage::Format_Grayscale8 || d->format == QImage::Format_Grayscale16)
        return true;
 
    switch (depth()) {
    case 32:
    case 24:
    case 16:
        return allGray();
    case 8: {
        Q_ASSERT(d->format == QImage::Format_Indexed8);
        for (int i = 0; i < colorCount(); i++)
            if (d->colortable.at(i) != qRgb(i,i,i))
                return false;
        return true;
        }
    }
    return false;
}
 
QImage QImage::scaled(const QSize& s, Qt::AspectRatioMode aspectMode, Qt::TransformationMode mode) const
{
    if (!d) {
        qWarning("QImage::scaled: Image is a null image");
        return QImage();
    }
    if (s.isEmpty())
        return QImage();
 
    QSize newSize = size();
    newSize.scale(s, aspectMode);
    newSize.rwidth() = qMax(newSize.width(), 1);
    newSize.rheight() = qMax(newSize.height(), 1);
    if (newSize == size())
        return *this;
 
    Q_TRACE_SCOPE(QImage_scaled, s, aspectMode, mode);
 
    QTransform wm = QTransform::fromScale((qreal)newSize.width() / width(), (qreal)newSize.height() / height());
    QImage img = transformed(wm, mode);
    return img;
}
 
QImage QImage::scaledToWidth(int w, Qt::TransformationMode mode) const
{
    if (!d) {
        qWarning("QImage::scaleWidth: Image is a null image");
        return QImage();
    }
    if (w <= 0)
        return QImage();
 
    Q_TRACE_SCOPE(QImage_scaledToWidth, w, mode);
 
    qreal factor = (qreal) w / width();
    QTransform wm = QTransform::fromScale(factor, factor);
    return transformed(wm, mode);
}
 
QImage QImage::scaledToHeight(int h, Qt::TransformationMode mode) const
{
    if (!d) {
        qWarning("QImage::scaleHeight: Image is a null image");
        return QImage();
    }
    if (h <= 0)
        return QImage();
 
    Q_TRACE_SCOPE(QImage_scaledToHeight, h, mode);
 
    qreal factor = (qreal) h / height();
    QTransform wm = QTransform::fromScale(factor, factor);
    return transformed(wm, mode);
}
 
QImage QImage::createAlphaMask(Qt::ImageConversionFlags flags) const
{
    if (!d || d->format == QImage::Format_RGB32)
        return QImage();
 
    if (d->depth == 1) {
        // A monochrome pixmap, with alpha channels on those two colors.
        // Pretty unlikely, so use less efficient solution.
        return convertToFormat(Format_Indexed8, flags).createAlphaMask(flags);
    }
 
    QImage mask(d->width, d->height, Format_MonoLSB);
    if (!mask.isNull()) {
        dither_to_Mono(mask.d, d, flags, true);
        copyPhysicalMetadata(mask.d, d);
    }
    return mask;
}
 
#ifndef QT_NO_IMAGE_HEURISTIC_MASK
QImage QImage::createHeuristicMask(bool clipTight) const
{
    if (!d)
        return QImage();
 
    if (d->depth != 32) {
        QImage img32 = convertToFormat(Format_RGB32);
        return img32.createHeuristicMask(clipTight);
    }
 
#define PIX(x,y)  (*((const QRgb*)scanLine(y)+x) & 0x00ffffff)
 
    int w = width();
    int h = height();
    QImage m(w, h, Format_MonoLSB);
    QIMAGE_SANITYCHECK_MEMORY(m);
    m.setColorCount(2);
    m.setColor(0, QColor(Qt::color0).rgba());
    m.setColor(1, QColor(Qt::color1).rgba());
    m.fill(0xff);
 
    QRgb background = PIX(0,0);
    if (background != PIX(w-1,0) &&
         background != PIX(0,h-1) &&
         background != PIX(w-1,h-1)) {
        background = PIX(w-1,0);
        if (background != PIX(w-1,h-1) &&
             background != PIX(0,h-1) &&
             PIX(0,h-1) == PIX(w-1,h-1)) {
            background = PIX(w-1,h-1);
        }
    }
 
    int x,y;
    bool done = false;
    uchar *ypp, *ypc, *ypn;
    while(!done) {
        done = true;
        ypn = m.scanLine(0);
        ypc = nullptr;
        for (y = 0; y < h; y++) {
            ypp = ypc;
            ypc = ypn;
            ypn = (y == h-1) ? nullptr : m.scanLine(y+1);
            const QRgb *p = (const QRgb *)scanLine(y);
            for (x = 0; x < w; x++) {
                // slowness here - it's possible to do six of these tests
                // together in one go. oh well.
                if ((x == 0 || y == 0 || x == w-1 || y == h-1 ||
                       !(*(ypc + ((x-1) >> 3)) & (1 << ((x-1) & 7))) ||
                       !(*(ypc + ((x+1) >> 3)) & (1 << ((x+1) & 7))) ||
                       !(*(ypp + (x     >> 3)) & (1 << (x     & 7))) ||
                       !(*(ypn + (x     >> 3)) & (1 << (x     & 7)))) &&
                     (       (*(ypc + (x     >> 3)) & (1 << (x     & 7)))) &&
                     ((*p & 0x00ffffff) == background)) {
                    done = false;
                    *(ypc + (x >> 3)) &= ~(1 << (x & 7));
                }
                p++;
            }
        }
    }
 
    if (!clipTight) {
        ypn = m.scanLine(0);
        ypc = nullptr;
        for (y = 0; y < h; y++) {
            ypp = ypc;
            ypc = ypn;
            ypn = (y == h-1) ? nullptr : m.scanLine(y+1);
            const QRgb *p = (const QRgb *)scanLine(y);
            for (x = 0; x < w; x++) {
                if ((*p & 0x00ffffff) != background) {
                    if (x > 0)
                        *(ypc + ((x-1) >> 3)) |= (1 << ((x-1) & 7));
                    if (x < w-1)
                        *(ypc + ((x+1) >> 3)) |= (1 << ((x+1) & 7));
                    if (y > 0)
                        *(ypp + (x >> 3)) |= (1 << (x & 7));
                    if (y < h-1)
                        *(ypn + (x >> 3)) |= (1 << (x & 7));
                }
                p++;
            }
        }
    }
 
#undef PIX
 
    copyPhysicalMetadata(m.d, d);
    return m;
}
#endif //QT_NO_IMAGE_HEURISTIC_MASK
 
QImage QImage::createMaskFromColor(QRgb color, Qt::MaskMode mode) const
{
    if (!d)
        return QImage();
    QImage maskImage(size(), QImage::Format_MonoLSB);
    QIMAGE_SANITYCHECK_MEMORY(maskImage);
    maskImage.fill(0);
    uchar *s = maskImage.bits();
    if (!s)
        return QImage();
 
    if (depth() == 32) {
        for (int h = 0; h < d->height; h++) {
            const uint *sl = (const uint *) scanLine(h);
            for (int w = 0; w < d->width; w++) {
                if (sl[w] == color)
                    *(s + (w >> 3)) |= (1 << (w & 7));
            }
            s += maskImage.bytesPerLine();
        }
    } else {
        for (int h = 0; h < d->height; h++) {
            for (int w = 0; w < d->width; w++) {
                if ((uint) pixel(w, h) == color)
                    *(s + (w >> 3)) |= (1 << (w & 7));
            }
            s += maskImage.bytesPerLine();
        }
    }
    if  (mode == Qt::MaskOutColor)
        maskImage.invertPixels();
 
    copyPhysicalMetadata(maskImage.d, d);
    return maskImage;
}
 
template<class T> inline void do_mirror_data(QImageData *dst, QImageData *src,
                                             int dstX0, int dstY0,
                                             int dstXIncr, int dstYIncr,
                                             int w, int h)
{
    if (dst == src) {
        // When mirroring in-place, stop in the middle for one of the directions, since we
        // are swapping the bytes instead of merely copying.
        const int srcXEnd = (dstX0 && !dstY0) ? w / 2 : w;
        const int srcYEnd = dstY0 ? h / 2 : h;
        for (int srcY = 0, dstY = dstY0; srcY < srcYEnd; ++srcY, dstY += dstYIncr) {
            T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
            T *dstPtr = (T *) (dst->data + dstY * dst->bytes_per_line);
            for (int srcX = 0, dstX = dstX0; srcX < srcXEnd; ++srcX, dstX += dstXIncr)
                std::swap(srcPtr[srcX], dstPtr[dstX]);
        }
        // If mirroring both ways, the middle line needs to be mirrored horizontally only.
        if (dstX0 && dstY0 && (h & 1)) {
            int srcY = h / 2;
            int srcXEnd2 = w / 2;
            T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
            for (int srcX = 0, dstX = dstX0; srcX < srcXEnd2; ++srcX, dstX += dstXIncr)
                std::swap(srcPtr[srcX], srcPtr[dstX]);
        }
    } else {
        for (int srcY = 0, dstY = dstY0; srcY < h; ++srcY, dstY += dstYIncr) {
            T *srcPtr = (T *) (src->data + srcY * src->bytes_per_line);
            T *dstPtr = (T *) (dst->data + dstY * dst->bytes_per_line);
            for (int srcX = 0, dstX = dstX0; srcX < w; ++srcX, dstX += dstXIncr)
                dstPtr[dstX] = srcPtr[srcX];
        }
    }
}
 
inline void do_flip(QImageData *dst, QImageData *src, int w, int h, int depth)
{
    const int data_bytes_per_line = w * (depth / 8);
    if (dst == src) {
        uint *srcPtr = reinterpret_cast<uint *>(src->data);
        uint *dstPtr = reinterpret_cast<uint *>(dst->data + (h - 1) * dst->bytes_per_line);
        h = h / 2;
        const int uint_per_line = (data_bytes_per_line + 3) >> 2; // bytes per line must be a multiple of 4
        for (int y = 0; y < h; ++y) {
            // This is auto-vectorized, no need for SSE2 or NEON versions:
            for (int x = 0; x < uint_per_line; x++) {
                const uint d = dstPtr[x];
                const uint s = srcPtr[x];
                dstPtr[x] = s;
                srcPtr[x] = d;
            }
            srcPtr += src->bytes_per_line >> 2;
            dstPtr -= dst->bytes_per_line >> 2;
        }
 
    } else {
        const uchar *srcPtr = src->data;
        uchar *dstPtr = dst->data + (h - 1) * dst->bytes_per_line;
        for (int y = 0; y < h; ++y) {
            memcpy(dstPtr, srcPtr, data_bytes_per_line);
            srcPtr += src->bytes_per_line;
            dstPtr -= dst->bytes_per_line;
        }
    }
}
 
inline void do_mirror(QImageData *dst, QImageData *src, bool horizontal, bool vertical)
{
    Q_ASSERT(src->width == dst->width && src->height == dst->height && src->depth == dst->depth);
    int w = src->width;
    int h = src->height;
    int depth = src->depth;
 
    if (src->depth == 1) {
        w = (w + 7) / 8; // byte aligned width
        depth = 8;
    }
 
    if (vertical && !horizontal) {
        // This one is simple and common, so do it a little more optimized
        do_flip(dst, src, w, h, depth);
        return;
    }
 
    int dstX0 = 0, dstXIncr = 1;
    int dstY0 = 0, dstYIncr = 1;
    if (horizontal) {
        // 0 -> w-1, 1 -> w-2, 2 -> w-3, ...
        dstX0 = w - 1;
        dstXIncr = -1;
    }
    if (vertical) {
        // 0 -> h-1, 1 -> h-2, 2 -> h-3, ...
        dstY0 = h - 1;
        dstYIncr = -1;
    }
 
    switch (depth) {
    case 128:
        do_mirror_data<QRgbaFloat32>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    case 64:
        do_mirror_data<quint64>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    case 32:
        do_mirror_data<quint32>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    case 24:
        do_mirror_data<quint24>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    case 16:
        do_mirror_data<quint16>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    case 8:
        do_mirror_data<quint8>(dst, src, dstX0, dstY0, dstXIncr, dstYIncr, w, h);
        break;
    default:
        Q_ASSERT(false);
        break;
    }
 
    // The bytes are now all in the correct place. In addition, the bits in the individual
    // bytes have to be flipped too when horizontally mirroring a 1 bit-per-pixel image.
    if (horizontal && dst->depth == 1) {
        Q_ASSERT(dst->format == QImage::Format_Mono || dst->format == QImage::Format_MonoLSB);
        const int shift = 8 - (dst->width % 8);
        const uchar *bitflip = qt_get_bitflip_array();
        for (int y = 0; y < h; ++y) {
            uchar *begin = dst->data + y * dst->bytes_per_line;
            uchar *end = begin + dst->bytes_per_line;
            for (uchar *p = begin; p < end; ++p) {
                *p = bitflip[*p];
                // When the data is non-byte aligned, an extra bit shift (of the number of
                // unused bits at the end) is needed for the entire scanline.
                if (shift != 8 && p != begin) {
                    if (dst->format == QImage::Format_Mono) {
                        for (int i = 0; i < shift; ++i) {
                            p[-1] <<= 1;
                            p[-1] |= (*p & (128 >> i)) >> (7 - i);
                        }
                    } else {
                        for (int i = 0; i < shift; ++i) {
                            p[-1] >>= 1;
                            p[-1] |= (*p & (1 << i)) << (7 - i);
                        }
                    }
                }
            }
            if (shift != 8) {
                if (dst->format == QImage::Format_Mono)
                    end[-1] <<= shift;
                else
                    end[-1] >>= shift;
            }
        }
    }
}
 
QImage QImage::mirrored_helper(bool horizontal, bool vertical) const
{
    if (!d)
        return QImage();
 
    if ((d->width <= 1 && d->height <= 1) || (!horizontal && !vertical))
        return *this;
 
    // Create result image, copy colormap
    QImage result(d->width, d->height, d->format);
    QIMAGE_SANITYCHECK_MEMORY(result);
 
    // check if we ran out of of memory..
    if (!result.d)
        return QImage();
 
    result.d->colortable = d->colortable;
    result.d->has_alpha_clut = d->has_alpha_clut;
    copyMetadata(result.d, d);
 
    do_mirror(result.d, d, horizontal, vertical);
 
    return result;
}
 
void QImage::mirrored_inplace(bool horizontal, bool vertical)
{
    if (!d || (d->width <= 1 && d->height <= 1) || (!horizontal && !vertical))
        return;
 
    detach();
    if (!d)
        return;
    if (!d->own_data)
        *this = copy();
 
    do_mirror(d, d, horizontal, vertical);
}
 
static inline void rgbSwapped_generic(int width, int height, const QImage *src, QImage *dst, const QPixelLayout* layout)
{
    const RbSwapFunc func = layout->rbSwap;
    if (!func) {
        qWarning("Trying to rb-swap an image format where it doesn't make sense");
        if (src != dst)
            *dst = *src;
        return;
    }
 
    for (int i = 0; i < height; ++i) {
        uchar *q = dst->scanLine(i);
        const uchar *p = src->constScanLine(i);
        func(q, p, width);
    }
}
 
QImage QImage::rgbSwapped_helper() const
{
    if (isNull())
        return *this;
 
    Q_TRACE_SCOPE(QImage_rgbSwapped_helper);
 
    QImage res;
 
    switch (d->format) {
    case Format_Invalid:
    case NImageFormats:
        Q_ASSERT(false);
        break;
    case Format_Alpha8:
    case Format_Grayscale8:
    case Format_Grayscale16:
        return *this;
    case Format_Mono:
    case Format_MonoLSB:
    case Format_Indexed8:
        res = copy();
        for (int i = 0; i < res.d->colortable.size(); i++) {
            QRgb c = res.d->colortable.at(i);
            res.d->colortable[i] = QRgb(((c << 16) & 0xff0000) | ((c >> 16) & 0xff) | (c & 0xff00ff00));
        }
        break;
    case Format_RGBX8888:
    case Format_RGBA8888:
    case Format_RGBA8888_Premultiplied:
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
        res = QImage(d->width, d->height, d->format);
        QIMAGE_SANITYCHECK_MEMORY(res);
        for (int i = 0; i < d->height; i++) {
            uint *q = (uint*)res.scanLine(i);
            const uint *p = (const uint*)constScanLine(i);
            const uint *end = p + d->width;
            while (p < end) {
                uint c = *p;
                *q = ((c << 16) & 0xff000000) | ((c >> 16) & 0xff00) | (c & 0x00ff00ff);
                p++;
                q++;
            }
        }
        break;
#else
        // On little-endian rgba8888 is abgr32 and can use same rgb-swap as argb32
        Q_FALLTHROUGH();
#endif
    case Format_RGB32:
    case Format_ARGB32:
    case Format_ARGB32_Premultiplied:
        res = QImage(d->width, d->height, d->format);
        QIMAGE_SANITYCHECK_MEMORY(res);
        for (int i = 0; i < d->height; i++) {
            uint *q = (uint*)res.scanLine(i);
            const uint *p = (const uint*)constScanLine(i);
            const uint *end = p + d->width;
            while (p < end) {
                uint c = *p;
                *q = ((c << 16) & 0xff0000) | ((c >> 16) & 0xff) | (c & 0xff00ff00);
                p++;
                q++;
            }
        }
        break;
    case Format_RGB16:
        res = QImage(d->width, d->height, d->format);
        QIMAGE_SANITYCHECK_MEMORY(res);
        for (int i = 0; i < d->height; i++) {
            ushort *q = (ushort*)res.scanLine(i);
            const ushort *p = (const ushort*)constScanLine(i);
            const ushort *end = p + d->width;
            while (p < end) {
                ushort c = *p;
                *q = ((c << 11) & 0xf800) | ((c >> 11) & 0x1f) | (c & 0x07e0);
                p++;
                q++;
            }
        }
        break;
    default:
        res = QImage(d->width, d->height, d->format);
        QIMAGE_SANITYCHECK_MEMORY(res);
        rgbSwapped_generic(d->width, d->height, this, &res, &qPixelLayouts[d->format]);
        break;
    }
    copyMetadata(res.d, d);
    return res;
}
 
void QImage::rgbSwapped_inplace()
{
    if (isNull())
        return;
 
    detach();
    if (!d)
        return;
    if (!d->own_data)
        *this = copy();
 
    switch (d->format) {
    case Format_Invalid:
    case NImageFormats:
        Q_ASSERT(false);
        break;
    case Format_Alpha8:
    case Format_Grayscale8:
    case Format_Grayscale16:
        return;
    case Format_Mono:
    case Format_MonoLSB:
    case Format_Indexed8:
        for (int i = 0; i < d->colortable.size(); i++) {
            QRgb c = d->colortable.at(i);
            d->colortable[i] = QRgb(((c << 16) & 0xff0000) | ((c >> 16) & 0xff) | (c & 0xff00ff00));
        }
        break;
    case Format_RGBX8888:
    case Format_RGBA8888:
    case Format_RGBA8888_Premultiplied:
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
        for (int i = 0; i < d->height; i++) {
            uint *p = (uint*)scanLine(i);
            uint *end = p + d->width;
            while (p < end) {
                uint c = *p;
                *p = ((c << 16) & 0xff000000) | ((c >> 16) & 0xff00) | (c & 0x00ff00ff);
                p++;
            }
        }
        break;
#else
        // On little-endian rgba8888 is abgr32 and can use same rgb-swap as argb32
        Q_FALLTHROUGH();
#endif
    case Format_RGB32:
    case Format_ARGB32:
    case Format_ARGB32_Premultiplied:
        for (int i = 0; i < d->height; i++) {
            uint *p = (uint*)scanLine(i);
            uint *end = p + d->width;
            while (p < end) {
                uint c = *p;
                *p = ((c << 16) & 0xff0000) | ((c >> 16) & 0xff) | (c & 0xff00ff00);
                p++;
            }
        }
        break;
    case Format_RGB16:
        for (int i = 0; i < d->height; i++) {
            ushort *p = (ushort*)scanLine(i);
            ushort *end = p + d->width;
            while (p < end) {
                ushort c = *p;
                *p = ((c << 11) & 0xf800) | ((c >> 11) & 0x1f) | (c & 0x07e0);
                p++;
            }
        }
        break;
    case Format_BGR30:
    case Format_A2BGR30_Premultiplied:
    case Format_RGB30:
    case Format_A2RGB30_Premultiplied:
        for (int i = 0; i < d->height; i++) {
            uint *p = (uint*)scanLine(i);
            uint *end = p + d->width;
            while (p < end) {
                *p = qRgbSwapRgb30(*p);
                p++;
            }
        }
        break;
    default:
        rgbSwapped_generic(d->width, d->height, this, this, &qPixelLayouts[d->format]);
        break;
    }
}
 
bool QImage::load(const QString &fileName, const char* format)
{
    *this = QImageReader(fileName, format).read();
    return !isNull();
}
 
bool QImage::load(QIODevice* device, const char* format)
{
    *this = QImageReader(device, format).read();
    return !isNull();
}
 
bool QImage::loadFromData(QByteArrayView data, const char *format)
{
    *this = fromData(data, format);
    return !isNull();
}
 
bool QImage::loadFromData(const uchar *buf, int len, const char *format)
{
    return loadFromData(QByteArrayView(buf, len), format);
}
 
QImage QImage::fromData(QByteArrayView data, const char *format)
{
    QByteArray a = QByteArray::fromRawData(data.constData(), data.size());
    QBuffer b;
    b.setData(a);
    b.open(QIODevice::ReadOnly);
    return QImageReader(&b, format).read();
}
 
QImage QImage::fromData(const uchar *data, int size, const char *format)
{
    return fromData(QByteArrayView(data, size), format);
}
 
bool QImage::save(const QString &fileName, const char *format, int quality) const
{
    if (isNull())
        return false;
    QImageWriter writer(fileName, format);
    return d->doImageIO(this, &writer, quality);
}
 
bool QImage::save(QIODevice* device, const char* format, int quality) const
{
    if (isNull())
        return false;                                // nothing to save
    QImageWriter writer(device, format);
    return d->doImageIO(this, &writer, quality);
}
 
/* \internal
*/
 
bool QImageData::doImageIO(const QImage *image, QImageWriter *writer, int quality) const
{
    if (quality > 100  || quality < -1)
        qWarning("QPixmap::save: Quality out of range [-1, 100]");
    if (quality >= 0)
        writer->setQuality(qMin(quality,100));
    return writer->write(*image);
}
 
/*****************************************************************************
  QImage stream functions
 *****************************************************************************/
#if !defined(QT_NO_DATASTREAM)
QDataStream &operator<<(QDataStream &s, const QImage &image)
{
    if (s.version() >= 5) {
        if (image.isNull()) {
            s << (qint32) 0; // null image marker
            return s;
        } else {
            s << (qint32) 1;
            // continue ...
        }
    }
    QImageWriter writer(s.device(), s.version() == 1 ? "bmp" : "png");
    writer.write(image);
    return s;
}
 
QDataStream &operator>>(QDataStream &s, QImage &image)
{
    if (s.version() >= 5) {
        qint32 nullMarker;
        s >> nullMarker;
        if (!nullMarker) {
            image = QImage(); // null image
            return s;
        }
    }
    image = QImageReader(s.device(), s.version() == 1 ? "bmp" : "png").read();
    if (image.isNull() && s.version() >= 5)
        s.setStatus(QDataStream::ReadPastEnd);
    return s;
}
#endif // QT_NO_DATASTREAM
 
 
 
bool QImage::operator==(const QImage & i) const
{
    // same object, or shared?
    if (i.d == d)
        return true;
    if (!i.d || !d)
        return false;
 
    // obviously different stuff?
    if (i.d->height != d->height || i.d->width != d->width || i.d->format != d->format)
        return false;
 
    if (d->format != Format_RGB32) {
        if (d->format >= Format_ARGB32) { // all bits defined
            const int n = d->width * d->depth / 8;
            if (n == d->bytes_per_line && n == i.d->bytes_per_line) {
                if (memcmp(bits(), i.bits(), d->nbytes))
                    return false;
            } else {
                for (int y = 0; y < d->height; ++y) {
                    if (memcmp(scanLine(y), i.scanLine(y), n))
                        return false;
                }
            }
        } else {
            const int w = width();
            const int h = height();
            const QList<QRgb> &colortable = d->colortable;
            const QList<QRgb> &icolortable = i.d->colortable;
            for (int y=0; y<h; ++y) {
                for (int x=0; x<w; ++x) {
                    if (colortable[pixelIndex(x, y)] != icolortable[i.pixelIndex(x, y)])
                        return false;
                }
            }
        }
    } else {
        //alpha channel undefined, so we must mask it out
        for(int l = 0; l < d->height; l++) {
            int w = d->width;
            const uint *p1 = reinterpret_cast<const uint*>(scanLine(l));
            const uint *p2 = reinterpret_cast<const uint*>(i.scanLine(l));
            while (w--) {
                if ((*p1++ & 0x00ffffff) != (*p2++ & 0x00ffffff))
                    return false;
            }
        }
    }
    return true;
}
 
 
bool QImage::operator!=(const QImage & i) const
{
    return !(*this == i);
}
 
 
 
 
int QImage::dotsPerMeterX() const
{
    return d ? qRound(d->dpmx) : 0;
}
 
int QImage::dotsPerMeterY() const
{
    return d ? qRound(d->dpmy) : 0;
}
 
void QImage::setDotsPerMeterX(int x)
{
    if (!d || !x)
        return;
    detach();
 
    if (d)
        d->dpmx = x;
}
 
void QImage::setDotsPerMeterY(int y)
{
    if (!d || !y)
        return;
    detach();
 
    if (d)
        d->dpmy = y;
}
 
QPoint QImage::offset() const
{
    return d ? d->offset : QPoint();
}
 
 
void QImage::setOffset(const QPoint& p)
{
    if (!d)
        return;
    detach();
 
    if (d)
        d->offset = p;
}
 
QStringList QImage::textKeys() const
{
    return d ? QStringList(d->text.keys()) : QStringList();
}
 
QString QImage::text(const QString &key) const
{
    if (!d)
        return QString();
 
    if (!key.isEmpty())
        return d->text.value(key);
 
    QString tmp;
    for (auto it = d->text.begin(), end = d->text.end(); it != end; ++it)
        tmp += it.key() + QLatin1String(": ") + it.value().simplified() + QLatin1String("\n\n");
    if (!tmp.isEmpty())
        tmp.chop(2); // remove final \n\n
    return tmp;
}
 
void QImage::setText(const QString &key, const QString &value)
{
    if (!d)
        return;
    detach();
 
    if (d)
        d->text.insert(key, value);
}
 
QPaintEngine *QImage::paintEngine() const
{
    if (!d)
        return nullptr;
 
    if (!d->paintEngine) {
        QPaintDevice *paintDevice = const_cast<QImage *>(this);
        QPlatformIntegration *platformIntegration = QGuiApplicationPrivate::platformIntegration();
        if (platformIntegration)
            d->paintEngine = platformIntegration->createImagePaintEngine(paintDevice);
       if (!d->paintEngine)
            d->paintEngine = new QRasterPaintEngine(paintDevice);
    }
 
    return d->paintEngine;
}
 
 
int QImage::metric(PaintDeviceMetric metric) const
{
    if (!d)
        return 0;
 
    switch (metric) {
    case PdmWidth:
        return d->width;
 
    case PdmHeight:
        return d->height;
 
    case PdmWidthMM:
        return qRound(d->width * 1000 / d->dpmx);
 
    case PdmHeightMM:
        return qRound(d->height * 1000 / d->dpmy);
 
    case PdmNumColors:
        return d->colortable.size();
 
    case PdmDepth:
        return d->depth;
 
    case PdmDpiX:
        return qRound(d->dpmx * 0.0254);
        break;
 
    case PdmDpiY:
        return qRound(d->dpmy * 0.0254);
        break;
 
    case PdmPhysicalDpiX:
        return qRound(d->dpmx * 0.0254);
        break;
 
    case PdmPhysicalDpiY:
        return qRound(d->dpmy * 0.0254);
        break;
 
    case PdmDevicePixelRatio:
        return d->devicePixelRatio;
        break;
 
    case PdmDevicePixelRatioScaled:
        return d->devicePixelRatio * QPaintDevice::devicePixelRatioFScale();
        break;
 
    default:
        qWarning("QImage::metric(): Unhandled metric type %d", metric);
        break;
    }
    return 0;
}
 
 
 
/*****************************************************************************
  QPixmap (and QImage) helper functions
 *****************************************************************************/
/*
  This internal function contains the common (i.e. platform independent) code
  to do a transformation of pixel data. It is used by QPixmap::transform() and by
  QImage::transform().
 
  \a trueMat is the true transformation matrix (see QPixmap::trueMatrix()) and
  \a xoffset is an offset to the matrix.
 
  \a msbfirst specifies for 1bpp images, if the MSB or LSB comes first and \a
  depth specifies the colordepth of the data.
 
  \a dptr is a pointer to the destination data, \a dbpl specifies the bits per
  line for the destination data, \a p_inc is the offset that we advance for
  every scanline and \a dHeight is the height of the destination image.
 
  \a sprt is the pointer to the source data, \a sbpl specifies the bits per
  line of the source data, \a sWidth and \a sHeight are the width and height of
  the source data.
*/
 
#undef IWX_MSB
#define IWX_MSB(b)        if (trigx < maxws && trigy < maxhs) {                              \
                            if (*(sptr+sbpl*(trigy>>12)+(trigx>>15)) &                      \
                                 (1 << (7-((trigx>>12)&7))))                              \
                                *dptr |= b;                                              \
                        }                                                              \
                        trigx += m11;                                                      \
                        trigy += m12;
        // END OF MACRO
#undef IWX_LSB
#define IWX_LSB(b)        if (trigx < maxws && trigy < maxhs) {                              \
                            if (*(sptr+sbpl*(trigy>>12)+(trigx>>15)) &                      \
                                 (1 << ((trigx>>12)&7)))                              \
                                *dptr |= b;                                              \
                        }                                                              \
                        trigx += m11;                                                      \
                        trigy += m12;
        // END OF MACRO
#undef IWX_PIX
#define IWX_PIX(b)        if (trigx < maxws && trigy < maxhs) {                              \
                            if ((*(sptr+sbpl*(trigy>>12)+(trigx>>15)) &              \
                                 (1 << (7-((trigx>>12)&7)))) == 0)                      \
                                *dptr &= ~b;                                              \
                        }                                                              \
                        trigx += m11;                                                      \
                        trigy += m12;
        // END OF MACRO
bool qt_xForm_helper(const QTransform &trueMat, int xoffset, int type, int depth,
                     uchar *dptr, qsizetype dbpl, int p_inc, int dHeight,
                     const uchar *sptr, qsizetype sbpl, int sWidth, int sHeight)
{
    int m11 = int(trueMat.m11()*4096.0);
    int m12 = int(trueMat.m12()*4096.0);
    int m21 = int(trueMat.m21()*4096.0);
    int m22 = int(trueMat.m22()*4096.0);
    int dx  = qRound(trueMat.dx()*4096.0);
    int dy  = qRound(trueMat.dy()*4096.0);
 
    int m21ydx = dx + (xoffset<<16) + (m11 + m21) / 2;
    int m22ydy = dy + (m12 + m22) / 2;
    uint trigx;
    uint trigy;
    uint maxws = sWidth<<12;
    uint maxhs = sHeight<<12;
 
    for (int y=0; y<dHeight; y++) {                // for each target scanline
        trigx = m21ydx;
        trigy = m22ydy;
        uchar *maxp = dptr + dbpl;
        if (depth != 1) {
            switch (depth) {
                case 8:                                // 8 bpp transform
                while (dptr < maxp) {
                    if (trigx < maxws && trigy < maxhs)
                        *dptr = *(sptr+sbpl*(trigy>>12)+(trigx>>12));
                    trigx += m11;
                    trigy += m12;
                    dptr++;
                }
                break;
 
                case 16:                        // 16 bpp transform
                while (dptr < maxp) {
                    if (trigx < maxws && trigy < maxhs)
                        *((ushort*)dptr) = *((const ushort *)(sptr+sbpl*(trigy>>12) +
                                                     ((trigx>>12)<<1)));
                    trigx += m11;
                    trigy += m12;
                    dptr++;
                    dptr++;
                }
                break;
 
                case 24:                        // 24 bpp transform
                while (dptr < maxp) {
                    if (trigx < maxws && trigy < maxhs) {
                        const uchar *p2 = sptr+sbpl*(trigy>>12) + ((trigx>>12)*3);
                        dptr[0] = p2[0];
                        dptr[1] = p2[1];
                        dptr[2] = p2[2];
                    }
                    trigx += m11;
                    trigy += m12;
                    dptr += 3;
                }
                break;
 
                case 32:                        // 32 bpp transform
                while (dptr < maxp) {
                    if (trigx < maxws && trigy < maxhs)
                        *((uint*)dptr) = *((const uint *)(sptr+sbpl*(trigy>>12) +
                                                   ((trigx>>12)<<2)));
                    trigx += m11;
                    trigy += m12;
                    dptr += 4;
                }
                break;
 
                default: {
                return false;
                }
            }
        } else  {
            switch (type) {
                case QT_XFORM_TYPE_MSBFIRST:
                    while (dptr < maxp) {
                        IWX_MSB(128);
                        IWX_MSB(64);
                        IWX_MSB(32);
                        IWX_MSB(16);
                        IWX_MSB(8);
                        IWX_MSB(4);
                        IWX_MSB(2);
                        IWX_MSB(1);
                        dptr++;
                    }
                    break;
                case QT_XFORM_TYPE_LSBFIRST:
                    while (dptr < maxp) {
                        IWX_LSB(1);
                        IWX_LSB(2);
                        IWX_LSB(4);
                        IWX_LSB(8);
                        IWX_LSB(16);
                        IWX_LSB(32);
                        IWX_LSB(64);
                        IWX_LSB(128);
                        dptr++;
                    }
                    break;
            }
        }
        m21ydx += m21;
        m22ydy += m22;
        dptr += p_inc;
    }
    return true;
}
#undef IWX_MSB
#undef IWX_LSB
#undef IWX_PIX
 
qint64 QImage::cacheKey() const
{
    if (!d)
        return 0;
    else
        return (((qint64) d->ser_no) << 32) | ((qint64) d->detach_no);
}
 
bool QImage::isDetached() const
{
    return d && d->ref.loadRelaxed() == 1;
}
 
 
void QImage::setAlphaChannel(const QImage &alphaChannel)
{
    if (!d || alphaChannel.isNull())
        return;
 
    if (d->paintEngine && d->paintEngine->isActive()) {
        qWarning("QImage::setAlphaChannel: "
                 "Unable to set alpha channel while image is being painted on");
        return;
    }
 
    const Format alphaFormat = qt_alphaVersionForPainting(d->format);
    if (d->format == alphaFormat)
        detach();
    else
        convertTo(alphaFormat);
 
    if (isNull())
        return;
 
    QImage sourceImage;
    if (alphaChannel.format() == QImage::Format_Alpha8 || (alphaChannel.d->depth == 8 && alphaChannel.isGrayscale()))
        sourceImage = alphaChannel;
    else
        sourceImage = alphaChannel.convertToFormat(QImage::Format_Grayscale8);
    if (!sourceImage.reinterpretAsFormat(QImage::Format_Alpha8))
        return;
 
    QPainter painter(this);
    if (sourceImage.size() != size())
        painter.setRenderHint(QPainter::SmoothPixmapTransform);
    painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
    painter.drawImage(rect(), sourceImage);
}
 
bool QImage::hasAlphaChannel() const
{
    if (!d)
        return false;
    const QPixelFormat format = pixelFormat();
    if (format.alphaUsage() == QPixelFormat::UsesAlpha)
        return true;
    if (format.colorModel() == QPixelFormat::Indexed)
        return d->has_alpha_clut;
    return false;
}
 
int QImage::bitPlaneCount() const
{
    if (!d)
        return 0;
    int bpc = 0;
    switch (d->format) {
    case QImage::Format_Invalid:
        break;
    case QImage::Format_BGR30:
    case QImage::Format_RGB30:
        bpc = 30;
        break;
    case QImage::Format_RGB32:
    case QImage::Format_RGBX8888:
        bpc = 24;
        break;
    case QImage::Format_RGB666:
        bpc = 18;
        break;
    case QImage::Format_RGB555:
        bpc = 15;
        break;
    case QImage::Format_ARGB8555_Premultiplied:
        bpc = 23;
        break;
    case QImage::Format_RGB444:
        bpc = 12;
        break;
    case QImage::Format_RGBX64:
    case QImage::Format_RGBX16FPx4:
        bpc = 48;
        break;
    case QImage::Format_RGBX32FPx4:
        bpc = 96;
        break;
    default:
        bpc = qt_depthForFormat(d->format);
        break;
    }
    return bpc;
}
 
QImage QImage::smoothScaled(int w, int h) const
{
    QImage src = *this;
    switch (src.format()) {
    case QImage::Format_RGB32:
    case QImage::Format_ARGB32_Premultiplied:
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
    case QImage::Format_RGBX8888:
#endif
    case QImage::Format_RGBA8888_Premultiplied:
#if QT_CONFIG(raster_64bit)
    case QImage::Format_RGBX64:
    case QImage::Format_RGBA64_Premultiplied:
        break;
    case QImage::Format_RGBA64:
    case QImage::Format_Grayscale16:
        src.convertTo(QImage::Format_RGBA64_Premultiplied);
        break;
#endif
#if QT_CONFIG(raster_fp)
    case QImage::Format_RGBX32FPx4:
    case QImage::Format_RGBA32FPx4_Premultiplied:
        break;
    case QImage::Format_RGBX16FPx4:
        src.convertTo(QImage::Format_RGBX32FPx4);
        break;
    case QImage::Format_RGBA16FPx4:
    case QImage::Format_RGBA16FPx4_Premultiplied:
    case QImage::Format_RGBA32FPx4:
        src.convertTo(QImage::Format_RGBA32FPx4_Premultiplied);
        break;
#endif
    default:
        if (src.hasAlphaChannel())
            src.convertTo(QImage::Format_ARGB32_Premultiplied);
        else
            src.convertTo(QImage::Format_RGB32);
    }
    src = qSmoothScaleImage(src, w, h);
    if (!src.isNull())
        copyMetadata(src.d, d);
    return src;
}
 
static QImage rotated90(const QImage &image)
{
    QImage out(image.height(), image.width(), image.format());
    copyMetadata(&out, image);
    if (image.colorCount() > 0)
        out.setColorTable(image.colorTable());
    int w = image.width();
    int h = image.height();
    const MemRotateFunc memrotate = qMemRotateFunctions[qPixelLayouts[image.format()].bpp][2];
    if (memrotate) {
        memrotate(image.constBits(), w, h, image.bytesPerLine(), out.bits(), out.bytesPerLine());
    } else {
        for (int y=0; y<h; ++y) {
            if (image.colorCount())
                for (int x=0; x<w; ++x)
                    out.setPixel(h-y-1, x, image.pixelIndex(x, y));
            else
                for (int x=0; x<w; ++x)
                    out.setPixel(h-y-1, x, image.pixel(x, y));
        }
    }
    return out;
}
 
static QImage rotated180(const QImage &image)
{
    const MemRotateFunc memrotate = qMemRotateFunctions[qPixelLayouts[image.format()].bpp][1];
    if (!memrotate)
        return image.mirrored(true, true);
 
    QImage out(image.width(), image.height(), image.format());
    copyMetadata(&out, image);
    if (image.colorCount() > 0)
        out.setColorTable(image.colorTable());
    int w = image.width();
    int h = image.height();
    memrotate(image.constBits(), w, h, image.bytesPerLine(), out.bits(), out.bytesPerLine());
    return out;
}
 
static QImage rotated270(const QImage &image)
{
    QImage out(image.height(), image.width(), image.format());
    copyMetadata(&out, image);
    if (image.colorCount() > 0)
        out.setColorTable(image.colorTable());
    int w = image.width();
    int h = image.height();
    const MemRotateFunc memrotate = qMemRotateFunctions[qPixelLayouts[image.format()].bpp][0];
    if (memrotate) {
        memrotate(image.constBits(), w, h, image.bytesPerLine(), out.bits(), out.bytesPerLine());
    } else {
        for (int y=0; y<h; ++y) {
            if (image.colorCount())
                for (int x=0; x<w; ++x)
                    out.setPixel(y, w-x-1, image.pixelIndex(x, y));
            else
                for (int x=0; x<w; ++x)
                    out.setPixel(y, w-x-1, image.pixel(x, y));
        }
    }
    return out;
}
 
QImage QImage::transformed(const QTransform &matrix, Qt::TransformationMode mode ) const
{
    if (!d)
        return QImage();
 
    Q_TRACE_SCOPE(QImage_transformed, matrix, mode);
 
    // source image data
    const int ws = width();
    const int hs = height();
 
    // target image data
    int wd;
    int hd;
 
    // compute size of target image
    QTransform mat = trueMatrix(matrix, ws, hs);
    bool complex_xform = false;
    bool scale_xform = false;
    bool nonpaintable_scale_xform = false;
    if (mat.type() <= QTransform::TxScale) {
        if (mat.type() == QTransform::TxNone) // identity matrix
            return *this;
        else if (mat.m11() == -1. && mat.m22() == -1.)
            return rotated180(*this);
 
        if (mode == Qt::FastTransformation) {
            hd = qRound(qAbs(mat.m22()) * hs);
            wd = qRound(qAbs(mat.m11()) * ws);
        } else {
            hd = int(qAbs(mat.m22()) * hs + 0.9999);
            wd = int(qAbs(mat.m11()) * ws + 0.9999);
        }
        scale_xform = true;
        // The paint-based scaling is only bilinear, and has problems
        // with scaling smoothly more than 2x down.
        if (hd * 2 < hs || wd * 2 < ws)
            nonpaintable_scale_xform = true;
    } else {
        if (mat.type() <= QTransform::TxRotate && mat.m11() == 0 && mat.m22() == 0) {
            if (mat.m12() == 1. && mat.m21() == -1.)
                return rotated90(*this);
            else if (mat.m12() == -1. && mat.m21() == 1.)
                return rotated270(*this);
        }
 
        QPolygonF a(QRectF(0, 0, ws, hs));
        a = mat.map(a);
        QRect r = a.boundingRect().toAlignedRect();
        wd = r.width();
        hd = r.height();
        complex_xform = true;
    }
 
    if (wd == 0 || hd == 0)
        return QImage();
 
    if (scale_xform && mode == Qt::SmoothTransformation) {
        switch (format()) {
        case QImage::Format_RGB32:
        case QImage::Format_ARGB32_Premultiplied:
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
        case QImage::Format_RGBX8888:
#endif
        case QImage::Format_RGBA8888_Premultiplied:
#if QT_CONFIG(raster_64bit)
        case QImage::Format_RGBX64:
        case QImage::Format_RGBA64_Premultiplied:
#endif
            // Use smoothScaled for scaling when we can do so without conversion.
            if (mat.m11() > 0.0F && mat.m22() > 0.0F)
                return smoothScaled(wd, hd);
            break;
        default:
            break;
        }
        // Otherwise only use it when the scaling factor demands it, or the image is large enough to scale multi-threaded
        if (nonpaintable_scale_xform
#if QT_CONFIG(thread) && !defined(Q_OS_WASM)
            || (ws * hs) >= (1<<20)
#endif
            ) {
            if (mat.m11() < 0.0F && mat.m22() < 0.0F) { // horizontal/vertical flip
                return smoothScaled(wd, hd).mirrored(true, true).convertToFormat(format());
            } else if (mat.m11() < 0.0F) { // horizontal flip
                return smoothScaled(wd, hd).mirrored(true, false).convertToFormat(format());
            } else if (mat.m22() < 0.0F) { // vertical flip
                return smoothScaled(wd, hd).mirrored(false, true).convertToFormat(format());
            } else { // no flipping
                return smoothScaled(wd, hd).convertToFormat(format());
            }
        }
    }
 
    int bpp = depth();
 
    qsizetype sbpl = bytesPerLine();
    const uchar *sptr = bits();
 
    QImage::Format target_format = d->format;
 
    if (complex_xform || mode == Qt::SmoothTransformation) {
        if (d->format < QImage::Format_RGB32 || (!hasAlphaChannel() && complex_xform)) {
            target_format = qt_alphaVersion(d->format);
        }
    }
 
    QImage dImage(wd, hd, target_format);
    QIMAGE_SANITYCHECK_MEMORY(dImage);
 
    if (target_format == QImage::Format_MonoLSB
        || target_format == QImage::Format_Mono
        || target_format == QImage::Format_Indexed8) {
        dImage.d->colortable = d->colortable;
        dImage.d->has_alpha_clut = d->has_alpha_clut | complex_xform;
    }
 
    // initizialize the data
    if (target_format == QImage::Format_Indexed8) {
        if (dImage.d->colortable.size() < 256) {
            // colors are left in the color table, so pick that one as transparent
            dImage.d->colortable.append(0x0);
            memset(dImage.bits(), dImage.d->colortable.size() - 1, dImage.d->nbytes);
        } else {
            memset(dImage.bits(), 0, dImage.d->nbytes);
        }
    } else
        memset(dImage.bits(), 0x00, dImage.d->nbytes);
 
    if (target_format >= QImage::Format_RGB32) {
        // Prevent QPainter from applying devicePixelRatio corrections
        const QImage sImage = (devicePixelRatio() != 1) ? QImage(constBits(), width(), height(), format()) : *this;
 
        Q_ASSERT(sImage.devicePixelRatio() == 1);
        Q_ASSERT(sImage.devicePixelRatio() == dImage.devicePixelRatio());
 
        QPainter p(&dImage);
        if (mode == Qt::SmoothTransformation) {
            p.setRenderHint(QPainter::Antialiasing);
            p.setRenderHint(QPainter::SmoothPixmapTransform);
        }
        p.setTransform(mat);
        p.drawImage(QPoint(0, 0), sImage);
    } else {
        bool invertible;
        mat = mat.inverted(&invertible);                // invert matrix
        if (!invertible)        // error, return null image
            return QImage();
 
        // create target image (some of the code is from QImage::copy())
        int type = format() == Format_Mono ? QT_XFORM_TYPE_MSBFIRST : QT_XFORM_TYPE_LSBFIRST;
        qsizetype dbpl = dImage.bytesPerLine();
        qt_xForm_helper(mat, 0, type, bpp, dImage.bits(), dbpl, 0, hd, sptr, sbpl, ws, hs);
    }
    copyMetadata(dImage.d, d);
 
    return dImage;
}
 
QTransform QImage::trueMatrix(const QTransform &matrix, int w, int h)
{
    const QRectF rect(0, 0, w, h);
    const QRect mapped = matrix.mapRect(rect).toAlignedRect();
    const QPoint delta = mapped.topLeft();
    return matrix * QTransform().translate(-delta.x(), -delta.y());
}
 
void QImage::setColorSpace(const QColorSpace &colorSpace)
{
    if (!d)
        return;
    if (d->colorSpace == colorSpace)
        return;
    if (!isDetached()) // Detach only if shared, not for read-only data.
        detach();
    d->colorSpace = colorSpace;
}
 
void QImage::convertToColorSpace(const QColorSpace &colorSpace)
{
    if (!d)
        return;
    if (!d->colorSpace.isValid())
        return;
    if (!colorSpace.isValid()) {
        qWarning() << "QImage::convertToColorSpace: Output colorspace is not valid";
        return;
    }
    if (d->colorSpace == colorSpace)
        return;
    applyColorTransform(d->colorSpace.transformationToColorSpace(colorSpace));
    d->colorSpace = colorSpace;
}
 
QImage QImage::convertedToColorSpace(const QColorSpace &colorSpace) const
{
    if (!d || !d->colorSpace.isValid() || !colorSpace.isValid())
        return QImage();
    QImage image = copy();
    image.convertToColorSpace(colorSpace);
    return image;
}
 
QColorSpace QImage::colorSpace() const
{
    if (!d)
        return QColorSpace();
    return d->colorSpace;
}
 
void QImage::applyColorTransform(const QColorTransform &transform)
{
    detach();
    if (!d)
        return;
    if (pixelFormat().colorModel() == QPixelFormat::Indexed) {
        for (int i = 0; i < d->colortable.size(); ++i)
            d->colortable[i] = transform.map(d->colortable[i]);
        return;
    }
    QImage::Format oldFormat = format();
    if (depth() > 32) {
        if (format() != QImage::Format_RGBX64 && format() != QImage::Format_RGBA64
                && format() != QImage::Format_RGBA64_Premultiplied)
            *this = std::move(*this).convertToFormat(QImage::Format_RGBA64);
    } else if (format() != QImage::Format_ARGB32 && format() != QImage::Format_RGB32
                && format() != QImage::Format_ARGB32_Premultiplied) {
        if (hasAlphaChannel())
            *this = std::move(*this).convertToFormat(QImage::Format_ARGB32);
        else
            *this = std::move(*this).convertToFormat(QImage::Format_RGB32);
    }
 
    QColorTransformPrivate::TransformFlags flags = QColorTransformPrivate::Unpremultiplied;
    switch (format()) {
    case Format_ARGB32_Premultiplied:
    case Format_RGBA64_Premultiplied:
        flags = QColorTransformPrivate::Premultiplied;
        break;
    case Format_RGB32:
    case Format_RGBX64:
        flags = QColorTransformPrivate::InputOpaque;
        break;
    case Format_ARGB32:
    case Format_RGBA64:
        break;
    default:
        Q_UNREACHABLE();
    }
 
    std::function<void(int,int)> transformSegment;
 
    if (depth() > 32) {
        transformSegment = [&](int yStart, int yEnd) {
            for (int y = yStart; y < yEnd; ++y) {
                QRgba64 *scanline = reinterpret_cast<QRgba64 *>(d->data + y * d->bytes_per_line);
                transform.d->apply(scanline, scanline, width(), flags);
            }
        };
    } else {
        transformSegment = [&](int yStart, int yEnd) {
            for (int y = yStart; y < yEnd; ++y) {
                QRgb *scanline = reinterpret_cast<QRgb *>(d->data + y * d->bytes_per_line);
                transform.d->apply(scanline, scanline, width(), flags);
            }
        };
    }
 
#if QT_CONFIG(thread) && !defined(Q_OS_WASM)
    int segments = (qsizetype(width()) * height()) >> 16;
    segments = std::min(segments, height());
    QThreadPool *threadPool = QThreadPool::globalInstance();
    if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) {
        QSemaphore semaphore;
        int y = 0;
        for (int i = 0; i < segments; ++i) {
            int yn = (height() - y) / (segments - i);
            threadPool->start([&, y, yn]() {
                transformSegment(y, y + yn);
                semaphore.release(1);
            });
            y += yn;
        }
        semaphore.acquire(segments);
    } else
#endif
        transformSegment(0, height());
 
    if (oldFormat != format())
        *this = std::move(*this).convertToFormat(oldFormat);
}
 
 
bool QImageData::convertInPlace(QImage::Format newFormat, Qt::ImageConversionFlags flags)
{
    if (format == newFormat)
        return true;
 
    // No in-place conversion if we have to detach
    if (ref.loadRelaxed() > 1 || !own_data)
        return false;
 
    InPlace_Image_Converter converter = qimage_inplace_converter_map[format][newFormat];
    if (converter)
        return converter(this, flags);
    if (format > QImage::Format_Indexed8 && newFormat > QImage::Format_Indexed8 && !qimage_converter_map[format][newFormat]) {
        // Convert inplace generic, but only if there are no direct converters,
        // any direct ones are probably better even if not inplace.
        if (qt_highColorPrecision(newFormat, !qPixelLayouts[newFormat].hasAlphaChannel)
                && qt_highColorPrecision(format, !qPixelLayouts[format].hasAlphaChannel)) {
#if QT_CONFIG(raster_fp)
            if (qt_fpColorPrecision(format) && qt_fpColorPrecision(newFormat))
                return convert_generic_inplace_over_rgba32f(this, newFormat, flags);
#endif
            return convert_generic_inplace_over_rgb64(this, newFormat, flags);
        }
        return convert_generic_inplace(this, newFormat, flags);
    }
    return false;
}
 
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QImage &i)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace();
    dbg.noquote();
    dbg << "QImage(";
    if (i.isNull()) {
        dbg << "null";
    } else {
        dbg << i.size() << ",format=" << i.format() << ",depth=" << i.depth();
        if (i.colorCount())
            dbg << ",colorCount=" << i.colorCount();
        const int bytesPerLine = i.bytesPerLine();
        dbg << ",devicePixelRatio=" << i.devicePixelRatio()
            << ",bytesPerLine=" << bytesPerLine << ",sizeInBytes=" << i.sizeInBytes();
        if (dbg.verbosity() > 2 && i.height() > 0) {
            const int outputLength = qMin(bytesPerLine, 24);
            dbg << ",line0="
                << QByteArray(reinterpret_cast<const char *>(i.scanLine(0)), outputLength).toHex()
                << "...";
        }
    }
    dbg << ')';
    return dbg;
}
#endif
 
static constexpr QPixelFormat pixelformats[] = {
        //QImage::Format_Invalid:
        QPixelFormat(),
        //QImage::Format_Mono:
        QPixelFormat(QPixelFormat::Indexed,
                        /*RED*/            1,
                        /*GREEN*/          0,
                        /*BLUE*/           0,
                        /*FOURTH*/         0,
                        /*FIFTH*/          0,
                        /*ALPHA*/          0,
                        /*ALPHA USAGE*/    QPixelFormat::IgnoresAlpha,
                        /*ALPHA POSITION*/ QPixelFormat::AtBeginning,
                        /*PREMULTIPLIED*/  QPixelFormat::NotPremultiplied,
                        /*INTERPRETATION*/ QPixelFormat::UnsignedByte,
                        /*BYTE ORDER*/     QPixelFormat::CurrentSystemEndian),
        //QImage::Format_MonoLSB:
        QPixelFormat(QPixelFormat::Indexed,
                        /*RED*/            1,
                        /*GREEN*/          0,
                        /*BLUE*/           0,
                        /*FOURTH*/         0,
                        /*FIFTH*/          0,
                        /*ALPHA*/          0,
                        /*ALPHA USAGE*/    QPixelFormat::IgnoresAlpha,
                        /*ALPHA POSITION*/ QPixelFormat::AtBeginning,
                        /*PREMULTIPLIED*/  QPixelFormat::NotPremultiplied,
                        /*INTERPRETATION*/ QPixelFormat::UnsignedByte,
                        /*BYTE ORDER*/     QPixelFormat::CurrentSystemEndian),
        //QImage::Format_Indexed8:
         QPixelFormat(QPixelFormat::Indexed,
                        /*RED*/            8,
                        /*GREEN*/          0,
                        /*BLUE*/           0,
                        /*FOURTH*/         0,
                        /*FIFTH*/          0,
                        /*ALPHA*/          0,
                        /*ALPHA USAGE*/    QPixelFormat::IgnoresAlpha,
                        /*ALPHA POSITION*/ QPixelFormat::AtBeginning,
                        /*PREMULTIPLIED*/  QPixelFormat::NotPremultiplied,
                        /*INTERPRETATION*/ QPixelFormat::UnsignedByte,
                        /*BYTE ORDER*/     QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB32:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB32:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB32_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB16:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                5,
                     /*GREEN*/              6,
                     /*BLUE*/               5,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              0,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB8565_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                5,
                     /*GREEN*/              6,
                     /*BLUE*/               5,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB666:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                6,
                     /*GREEN*/              6,
                     /*BLUE*/               6,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              0,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB6666_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                6,
                     /*GREEN*/              6,
                     /*BLUE*/               6,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              6,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB555:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                5,
                     /*GREEN*/              5,
                     /*BLUE*/               5,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              0,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB8555_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                5,
                     /*GREEN*/              5,
                     /*BLUE*/               5,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB888:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              0,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB444:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                4,
                     /*GREEN*/              4,
                     /*BLUE*/               4,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              0,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_ARGB4444_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                4,
                     /*GREEN*/              4,
                     /*BLUE*/               4,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              4,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBX8888:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBA8888:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBA8888_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                8,
                     /*GREEN*/              8,
                     /*BLUE*/               8,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              8,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_BGR30:
         QPixelFormat(QPixelFormat::BGR,
                     /*RED*/                10,
                     /*GREEN*/              10,
                     /*BLUE*/               10,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              2,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_A2BGR30_Premultiplied:
         QPixelFormat(QPixelFormat::BGR,
                     /*RED*/                10,
                     /*GREEN*/              10,
                     /*BLUE*/               10,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              2,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGB30:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                10,
                     /*GREEN*/              10,
                     /*BLUE*/               10,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              2,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_A2RGB30_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                10,
                     /*GREEN*/              10,
                     /*BLUE*/               10,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              2,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedInteger,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_Alpha8:
        QPixelFormat(QPixelFormat::Alpha,
                    /*First*/              0,
                    /*SECOND*/             0,
                    /*THIRD*/              0,
                    /*FOURTH*/             0,
                    /*FIFTH*/              0,
                    /*ALPHA*/              8,
                    /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                    /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                    /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                    /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                    /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_Grayscale8:
        QPixelFormat(QPixelFormat::Grayscale,
                    /*GRAY*/               8,
                    /*SECOND*/             0,
                    /*THIRD*/              0,
                    /*FOURTH*/             0,
                    /*FIFTH*/              0,
                    /*ALPHA*/              0,
                    /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                    /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                    /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                    /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                    /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBX64:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBA64:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
         //QImage::Format_RGBA64_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_Grayscale16:
        QPixelFormat(QPixelFormat::Grayscale,
                    /*GRAY*/               16,
                    /*SECOND*/             0,
                    /*THIRD*/              0,
                    /*FOURTH*/             0,
                    /*FIFTH*/              0,
                    /*ALPHA*/              0,
                    /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                    /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                    /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                    /*INTERPRETATION*/    QPixelFormat::UnsignedShort,
                    /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_BGR888:
        QPixelFormat(QPixelFormat::BGR,
                    /*RED*/                8,
                    /*GREEN*/              8,
                    /*BLUE*/               8,
                    /*FOURTH*/             0,
                    /*FIFTH*/              0,
                    /*ALPHA*/              0,
                    /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                    /*ALPHA POSITION*/    QPixelFormat::AtBeginning,
                    /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                    /*INTERPRETATION*/    QPixelFormat::UnsignedByte,
                    /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBX16FPx4:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBA16FPx4:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
         //QImage::Format_RGBA16FPx4_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                16,
                     /*GREEN*/              16,
                     /*BLUE*/               16,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              16,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBX32FPx4:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                32,
                     /*GREEN*/              32,
                     /*BLUE*/               32,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              32,
                     /*ALPHA USAGE*/       QPixelFormat::IgnoresAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
        //QImage::Format_RGBA32FPx4:
        QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                32,
                     /*GREEN*/              32,
                     /*BLUE*/               32,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              32,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::NotPremultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
         //QImage::Format_RGBA32FPx4_Premultiplied:
         QPixelFormat(QPixelFormat::RGB,
                     /*RED*/                32,
                     /*GREEN*/              32,
                     /*BLUE*/               32,
                     /*FOURTH*/             0,
                     /*FIFTH*/              0,
                     /*ALPHA*/              32,
                     /*ALPHA USAGE*/       QPixelFormat::UsesAlpha,
                     /*ALPHA POSITION*/    QPixelFormat::AtEnd,
                     /*PREMULTIPLIED*/     QPixelFormat::Premultiplied,
                     /*INTERPRETATION*/    QPixelFormat::FloatingPoint,
                     /*BYTE ORDER*/        QPixelFormat::CurrentSystemEndian),
};
static_assert(sizeof(pixelformats) / sizeof(*pixelformats) == QImage::NImageFormats);
 
QPixelFormat QImage::pixelFormat() const noexcept
{
    return toPixelFormat(format());
}
 
QPixelFormat QImage::toPixelFormat(QImage::Format format) noexcept
{
    Q_ASSERT(static_cast<int>(format) < NImageFormats && static_cast<int>(format) >= 0);
    return pixelformats[format];
}
 
QImage::Format QImage::toImageFormat(QPixelFormat format) noexcept
{
    for (int i = 0; i < NImageFormats; i++) {
        if (format == pixelformats[i])
            return Format(i);
    }
    return Format_Invalid;
}
 
Q_GUI_EXPORT void qt_imageTransform(QImage &src, QImageIOHandler::Transformations orient)
{
    if (orient == QImageIOHandler::TransformationNone)
        return;
    if (orient == QImageIOHandler::TransformationRotate270) {
        src = rotated270(src);
    } else {
        src = std::move(src).mirrored(orient & QImageIOHandler::TransformationMirror,
                                  orient & QImageIOHandler::TransformationFlip);
        if (orient & QImageIOHandler::TransformationRotate90)
            src = rotated90(src);
    }
}
 
QMap<QString, QString> qt_getImageText(const QImage &image, const QString &description)
{
    QMap<QString, QString> text = qt_getImageTextFromDescription(description);
    const auto textKeys = image.textKeys();
    for (const QString &key : textKeys) {
        if (!key.isEmpty() && !text.contains(key))
            text.insert(key, image.text(key));
    }
    return text;
}
 
QMap<QString, QString> qt_getImageTextFromDescription(const QString &description)
{
    QMap<QString, QString> text;
    const auto pairs = QStringView{description}.split(u"\n\n");
    for (const auto &pair : pairs) {
        int index = pair.indexOf(QLatin1Char(':'));
        if (index >= 0 && pair.indexOf(QLatin1Char(' ')) < index) {
            if (!pair.trimmed().isEmpty())
                text.insert(QLatin1String("Description"), pair.toString().simplified());
        } else {
            const auto key = pair.left(index);
            if (!key.trimmed().isEmpty())
                text.insert(key.toString(), pair.mid(index + 2).toString().simplified());
        }
    }
    return text;
}
 
QT_END_NAMESPACE
 
#include "moc_qimage.cpp"