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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Ivan Komissarov.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QDDSHANDLER_H
#define QDDSHANDLER_H
#include <QtGui/qimageiohandler.h>
#include "ddsheader.h"
#ifndef QT_NO_DATASTREAM
QT_BEGIN_NAMESPACE
class QDDSHandler : public QImageIOHandler
{
public:
QDDSHandler();
bool canRead() const override;
bool read(QImage *image) override;
bool write(const QImage &image) override;
QVariant option(QImageIOHandler::ImageOption option) const override;
void setOption(ImageOption option, const QVariant &value) override;
bool supportsOption(QImageIOHandler::ImageOption option) const override;
int imageCount() const override;
bool jumpToImage(int imageNumber) override;
static bool canRead(QIODevice *device);
private:
bool ensureScanned() const;
bool verifyHeader(const DDSHeader &dds) const;
private:
enum ScanState {
ScanError = -1,
ScanNotScanned = 0,
ScanSuccess = 1,
};
DDSHeader m_header;
int m_format;
DDSHeaderDX10 m_header10;
int m_currentImage;
mutable ScanState m_scanState;
};
QT_END_NAMESPACE
#endif // QT_NO_DATASTREAM
#endif // QDDSHANDLER_H
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