C++ (Cpp) iterator::count Examples

Example #1

File: metaengine_image.cpp Project: KDE/digikam

MetaEngine::ImageOrientation MetaEngine::getImageOrientation() const
{
    try
    {
        Exiv2::ExifData exifData(d->exifMetadata());
        Exiv2::ExifData::iterator it;
        long orientation;
        ImageOrientation imageOrient = ORIENTATION_NORMAL;

        // -- Standard Xmp tag --------------------------------

#ifdef _XMP_SUPPORT_

        bool ok = false;
        QString str = getXmpTagString("Xmp.tiff.Orientation");

        if (!str.isEmpty())
        {
            orientation = str.toLong(&ok);

            if (ok)
            {
                qCDebug(DIGIKAM_METAENGINE_LOG) << "Orientation => Xmp.tiff.Orientation => " << (int)orientation;
                return (ImageOrientation)orientation;
            }
        }

#endif // _XMP_SUPPORT_

        // Because some camera set a wrong standard exif orientation tag,
        // We need to check makernote tags in first!

        // -- Minolta Cameras ----------------------------------

        Exiv2::ExifKey minoltaKey1("Exif.MinoltaCs7D.Rotation");
        it = exifData.findKey(minoltaKey1);

        if (it != exifData.end() && it->count())
        {
            orientation = it->toLong();
            qCDebug(DIGIKAM_METAENGINE_LOG) << "Orientation => Exif.MinoltaCs7D.Rotation => " << (int)orientation;

            switch(orientation)
            {
            case 76:
                imageOrient = ORIENTATION_ROT_90;
                break;
            case 82:
                imageOrient = ORIENTATION_ROT_270;
                break;
            }

            return imageOrient;
        }

        Exiv2::ExifKey minoltaKey2("Exif.MinoltaCs5D.Rotation");
        it = exifData.findKey(minoltaKey2);

        if (it != exifData.end() && it->count())
        {
            orientation = it->toLong();
            qCDebug(DIGIKAM_METAENGINE_LOG) << "Orientation => Exif.MinoltaCs5D.Rotation => " << (int)orientation;

            switch(orientation)
            {
            case 76:
                imageOrient = ORIENTATION_ROT_90;
                break;
            case 82:
                imageOrient = ORIENTATION_ROT_270;
                break;
            }

            return imageOrient;
        }

        // -- Standard Exif tag --------------------------------

        Exiv2::ExifKey keyStd("Exif.Image.Orientation");
        it = exifData.findKey(keyStd);

        if (it != exifData.end() && it->count())
        {
            orientation = it->toLong();
            qCDebug(DIGIKAM_METAENGINE_LOG) << "Orientation => Exif.Image.Orientation => " << (int)orientation;
            return (ImageOrientation)orientation;
        }

    }
    catch( Exiv2::Error& e )
    {
        d->printExiv2ExceptionError(QString::fromLatin1("Cannot parse Exif Orientation tag using Exiv2 "), e);
    }
    catch(...)
    {
        qCCritical(DIGIKAM_METAENGINE_LOG) << "Default exception from Exiv2";
    }

    return ORIENTATION_UNSPECIFIED;
}

Example #2

File: metaengine_image.cpp Project: KDE/digikam

QSize MetaEngine::getImageDimensions() const
{
    try
    {
        long width=-1, height=-1;

        // Try to get Exif.Photo tags

        Exiv2::ExifData exifData(d->exifMetadata());
        Exiv2::ExifKey key("Exif.Photo.PixelXDimension");
        Exiv2::ExifData::iterator it = exifData.findKey(key);

        if (it != exifData.end() && it->count())
            width = it->toLong();

        Exiv2::ExifKey key2("Exif.Photo.PixelYDimension");
        Exiv2::ExifData::iterator it2 = exifData.findKey(key2);

        if (it2 != exifData.end() && it2->count())
            height = it2->toLong();

        if (width != -1 && height != -1)
            return QSize(width, height);

        // Try to get Exif.Image tags

        width  = -1;
        height = -1;

        Exiv2::ExifKey key3("Exif.Image.ImageWidth");
        Exiv2::ExifData::iterator it3 = exifData.findKey(key3);

        if (it3 != exifData.end() && it3->count())
            width = it3->toLong();

        Exiv2::ExifKey key4("Exif.Image.ImageLength");
        Exiv2::ExifData::iterator it4 = exifData.findKey(key4);

        if (it4 != exifData.end() && it4->count())
            height = it4->toLong();

        if (width != -1 && height != -1)
            return QSize(width, height);

#ifdef _XMP_SUPPORT_

        // Try to get Xmp.tiff tags

        width    = -1;
        height   = -1;
        bool wOk = false;
        bool hOk = false;

        QString str = getXmpTagString("Xmp.tiff.ImageWidth");

        if (!str.isEmpty())
            width = str.toInt(&wOk);

        str = getXmpTagString("Xmp.tiff.ImageLength");

        if (!str.isEmpty())
            height = str.toInt(&hOk);

        if (wOk && hOk)
            return QSize(width, height);

        // Try to get Xmp.exif tags

        width  = -1;
        height = -1;
        wOk    = false;
        hOk    = false;

        str = getXmpTagString("Xmp.exif.PixelXDimension");

        if (!str.isEmpty())
            width = str.toInt(&wOk);

        str = getXmpTagString("Xmp.exif.PixelYDimension");

        if (!str.isEmpty())
            height = str.toInt(&hOk);

        if (wOk && hOk)
            return QSize(width, height);

#endif // _XMP_SUPPORT_

    }
    catch( Exiv2::Error& e )
    {
        d->printExiv2ExceptionError(QString::fromLatin1("Cannot parse image dimensions tag using Exiv2 "), e);
    }
    catch(...)
    {
        qCCritical(DIGIKAM_METAENGINE_LOG) << "Default exception from Exiv2";
    }

    return QSize();
}