dimgtiffloader.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2005-06-17
 * Description : A TIFF IO file for DImg framework
 *
 * Copyright (C) 2005      by Renchi Raju <renchi dot raju at gmail dot com>
 * Copyright (C) 2006-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * Specifications & references:
 * - TIFF 6.0  : partners.adobe.com/public/developer/en/tiff/TIFF6.pdf
 * - TIFF/EP   : www.map.tu.chiba-u.ac.jp/IEC/100/TA2/recdoc/N4378.pdf
 * - TIFF/Tags : www.awaresystems.be/imaging/tiff/tifftags.html
 * - DNG       : www.adobe.com/products/dng/pdfs/dng_spec.pdf
 *
 * Others Linux Tiff Loader implementation using libtiff:
 * - websvn.kde.org/trunk/koffice/filters/krita/tiff/kis_tiff_converter.cc
 * - artis.inrialpes.fr/Software/TiffIO/
 * - cvs.graphicsmagick.org/cgi-bin/cvsweb.cgi/GraphicsMagick/coders/tiff.c
 * - freeimage.cvs.sourceforge.net/freeimage/FreeImage/Source/FreeImage/PluginTIFF.cpp
 * - freeimage.cvs.sourceforge.net/freeimage/FreeImage/Source/Metadata/XTIFF.cpp
 * - subversion.imagemagick.org/subversion/ImageMagick/trunk/coders/tiff.c
 *
 * Test images repository:
 * - www.remotesensing.org/libtiff/images.html
 *
 * 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_DIMG_TIFF_LOADER_H
#define DIGIKAM_DIMG_TIFF_LOADER_H
 
// C ANSI includes
 
extern "C"
{
#include <tiffio.h>
#include <tiff.h>
}
 
// Local includes
 
#include "dimg.h"
#include "dimgloader.h"
#include "dmetadata.h"
 
using namespace Digikam;
 
namespace DigikamTIFFDImgPlugin
{
 
class DImgTIFFLoader : public DImgLoader
{
public:
 
    explicit DImgTIFFLoader(DImg* const image);
    ~DImgTIFFLoader()                                                      override;
 
    bool load(const QString& filePath, DImgLoaderObserver* const observer) override;
    bool save(const QString& filePath, DImgLoaderObserver* const observer) override;
 
    bool hasAlpha()                                                  const override;
    bool sixteenBit()                                                const override;
    bool isReadOnly()                                                const override;
 
private:
 
    void tiffSetExifAsciiTag(TIFF* const tif, ttag_t tiffTag, const DMetadata& metaData, const char* const exifTagName);
 
    // cppcheck-suppress unusedPrivateFunction
    void tiffSetExifDataTag(TIFF* const tif, ttag_t tiffTag, const DMetadata& metaData, const char* const exifTagName);
 
    static void dimg_tiff_warning(const char* module, const char* format, va_list warnings);
    static void dimg_tiff_error(const char* module, const char* format, va_list errors);
 
private:
 
    bool m_sixteenBit;
    bool m_hasAlpha;
};
 
} // namespace DigikamTIFFDImgPlugin
 
#endif // DIGIKAM_DIMG_TIFF_LOADER_H