drawdecoder.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2006-12-09
 * Description : a tread-safe libraw Qt interface
 *
 * Copyright (C) 2006-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2006-2013 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2007-2008 by Guillaume Castagnino <casta at xwing dot info>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_DRAW_DECODER_H
#define DIGIKAM_DRAW_DECODER_H
 
// C++ includes
 
#include <cmath>
 
// Qt includes
 
#include <QBuffer>
#include <QString>
#include <QObject>
#include <QImage>
 
// Local includes
 
#include "drawdecodersettings.h"
#include "drawinfo.h"
#include "digikam_export.h"
 
namespace Digikam
{
 
class DIGIKAM_EXPORT DRawDecoder : public QObject
{
    Q_OBJECT
 
public:
 
    DRawDecoder();
 
    ~DRawDecoder() override;
 
public:
 
    static bool loadRawPreview(QImage& image, const QString& path);
 
    static bool loadRawPreview(QByteArray& imgData, const QString& path);
 
    static bool loadRawPreview(QByteArray& imgData, const QBuffer& inBuffer);
 
    static bool loadEmbeddedPreview(QByteArray& imgData, const QString& path);
 
    static bool loadEmbeddedPreview(QImage& image, const QString& path);
 
    static bool loadEmbeddedPreview(QByteArray& imgData, const QBuffer& inBuffer);
 
    static bool loadHalfPreview(QImage& image, const QString& path);
 
    static bool loadHalfPreview(QByteArray& imgData, const QString& path);
 
    static bool loadHalfPreview(QByteArray& imgData, const QBuffer& inBuffer);
 
    static bool loadFullImage(QImage& image,
                              const QString& path,
                              const DRawDecoderSettings& settings = DRawDecoderSettings());
 
    static bool rawFileIdentify(DRawInfo& identify, const QString& path);
 
    static QString rawFiles();
 
    static QStringList rawFilesList();
 
    static int rawFilesVersion();
 
    static QStringList supportedCamera();
 
    static QString librawVersion();
 
    static int librawUseGomp();
 
    static bool isRawFile(const QUrl& url);
 
public:
 
    bool extractRAWData(const QString& filePath,
                        QByteArray& rawData,
                        DRawInfo& identify,
                        unsigned int shotSelect=0);
 
    bool decodeHalfRAWImage(const QString& filePath,
                            const DRawDecoderSettings& DRawDecoderSettings,
                            QByteArray& imageData,
                            int& width,
                            int& height,
                            int& rgbmax);
 
    bool decodeRAWImage(const QString& filePath,
                        const DRawDecoderSettings& DRawDecoderSettings,
                        QByteArray& imageData,
                        int& width,
                        int& height,
                        int& rgbmax);
 
    void cancel();
 
protected:
 
    bool                m_cancel;
 
    DRawDecoderSettings m_decoderSettings;
 
protected:
 
    virtual bool checkToCancelWaitingData();
 
    virtual void setWaitingDataProgress(double value);
 
public:
 
    // NOTE: declared public to be called externally by s_progressCallbackForLibRaw() static method.
    class Private;
 
private:
 
    // Disabled
    explicit DRawDecoder(QObject*) = delete;
 
    Private* const d;
 
    friend class Private;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_DRAW_DECODER_H