modules/seformatjpegold/seformatjpeg/imagejpeg.h

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//  This file is part of SilentEye.
//
//  SilentEye 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 3 of the License, or
//  (at your option) any later version.
//
//  SilentEye 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.
//
//  You should have received a copy of the GNU General Public License
//  along with SilentEye.  If not, see <http://www.gnu.org/licenses/>.

#ifndef IMAGEJPEG_H_
#define IMAGEJPEG_H_

#include <image.h>
#include <encodeddata.h>
#include <QDebug>

#define EQUI_NB_STEP_MIN 9

using namespace SilentEyeFramework;

namespace SEFormatJPEG {

    class ImageJPEG : public Image
    {
    public:
        enum HeaderPosition{TOP=1, BOTTOM=2, SIGNATURE=3};

    private:
        QPointer<Logger> m_logger;

        quint16 m_nbBits;
        int m_k;
        QString m_passphrase;
        int m_quality;
        HeaderPosition m_headerPosition;
        int m_blockWidth;
        int m_blockHeight;
        int m_blockInnerPos;

    public:
        ImageJPEG();
        ~ImageJPEG();
        ImageJPEG(const QString& filePath);
        ImageJPEG(const QPixmap& pixmap, QString filePath="Pixmap");
        ImageJPEG(const Image& image);
        ImageJPEG(Image* image);

        void setK(int);
        void setPassphrase(QString);
        void setQuality(int);
        void setHeaderPosition(HeaderPosition);

        quint32 capacity() const;

        bool loadData();
        bool hideData();
        bool saveToDir(QString& outputDirPath);

    private:
        void init();
        int computeDistributionStep(quint32 size, int width, int height);
        QPoint* computeHeaderPosition(int width, int height);
        bool isBetweenPoint(const QPoint&, const QPoint&, const QPoint&);
        QPoint computeNewPosition(const QPoint&, int, int width, int height, bool=false);
    };
}
#endif