qtiffhandler_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QTIFFHANDLER_P_H
#define QTIFFHANDLER_P_H
 
#include <QtCore/QScopedPointer>
#include <QtGui/QImageIOHandler>
 
QT_BEGIN_NAMESPACE
 
class QTiffHandlerPrivate;
class QTiffHandler : public QImageIOHandler
{
public:
    QTiffHandler();
 
    bool canRead() const override;
    bool read(QImage *image) override;
    bool write(const QImage &image) override;
 
    static bool canRead(QIODevice *device);
 
    QVariant option(ImageOption option) const override;
    void setOption(ImageOption option, const QVariant &value) override;
    bool supportsOption(ImageOption option) const override;
 
    bool jumpToNextImage() override;
    bool jumpToImage(int imageNumber) override;
    int imageCount() const override;
    int currentImageNumber() const override;
 
    enum Compression {
        NoCompression = 0,
        LzwCompression = 1
    };
private:
    void convert32BitOrder(void *buffer, int width);
    void rgb48fixup(QImage *image, bool floatingPoint);
    void rgb96fixup(QImage *image);
    void rgbFixup(QImage *image);
    const QScopedPointer<QTiffHandlerPrivate> d;
    bool ensureHaveDirectoryCount() const;
};
 
QT_END_NAMESPACE
 
#endif // QTIFFHANDLER_P_H