C++ AutoPtr::iptcData方法代码示例

void ExifTransfer::copyIPTC() {
    const Exiv2::IptcData & srcIptc = src->iptcData();
    Exiv2::IptcData & dstIptc = dst->iptcData();
    for (const auto & datum : srcIptc) {
        if (dstIptc.findKey(Exiv2::IptcKey(datum.key())) == dstIptc.end()) {
            dstIptc.add(datum);
        }
    }
}

// *****************************************************************************
// Main
int main(int argc, char* const argv[])
{
try {
    // Handle command line arguments
    Params params;
    if (params.getopt(argc, argv)) {
        params.usage();
        return 1;
    }
    if (params.help_) {
        params.help();
        return 2;
    }

    // Use MemIo to increase test coverage.
    Exiv2::BasicIo::AutoPtr fileIo(new Exiv2::FileIo(params.read_));
    Exiv2::BasicIo::AutoPtr memIo(new Exiv2::MemIo);
    memIo->transfer(*fileIo);

    Exiv2::Image::AutoPtr readImg = Exiv2::ImageFactory::open(memIo);
    assert(readImg.get() != 0);
    readImg->readMetadata();

    Exiv2::Image::AutoPtr writeImg = Exiv2::ImageFactory::open(params.write_);
    assert(writeImg.get() != 0);
    if (params.preserve_) writeImg->readMetadata();
    if (params.iptc_) {
        writeImg->setIptcData(readImg->iptcData());
    }
    if (params.exif_) {
        writeImg->setExifData(readImg->exifData());
    }
    if (params.comment_) {
        writeImg->setComment(readImg->comment());
    }
    if (params.xmp_) {
        writeImg->setXmpData(readImg->xmpData());
    }

    try {
        writeImg->writeMetadata();
    }
    catch (const Exiv2::AnyError&) {
        std::cerr << params.progname() <<
            ": Could not write metadata to (" << params.write_ << ")\n";
        return 8;
    }

    return 0;
}
catch (Exiv2::AnyError& e) {
    std::cerr << "Caught Exiv2 exception '" << e << "'\n";
    return 10;
}
}

bool KExiv2::loadFromData(const QByteArray& imgData) const
{
    if (imgData.isEmpty())
        return false;

    try
    {
        Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open((Exiv2::byte*)imgData.data(), imgData.size());

        d->filePath.clear();
        image->readMetadata();

        // Size and mimetype ---------------------------------

        d->pixelSize = QSize(image->pixelWidth(), image->pixelHeight());
        d->mimeType  = QString::fromLatin1(image->mimeType().c_str());

        // Image comments ---------------------------------

        d->imageComments() = image->comment();

        // Exif metadata ----------------------------------

        d->exifMetadata() = image->exifData();

        // Iptc metadata ----------------------------------

        d->iptcMetadata() = image->iptcData();

#ifdef _XMP_SUPPORT_

        // Xmp metadata -----------------------------------

        d->xmpMetadata() = image->xmpData();

#endif // _XMP_SUPPORT_

        return true;
    }
    catch( Exiv2::Error& e )
    {
        d->printExiv2ExceptionError(QString::fromLatin1("Cannot load metadata using Exiv2 "), e);
    }
    catch(...)
    {
        qCCritical(LIBKEXIV2_LOG) << "Default exception from Exiv2";
    }

    return false;
}

void ThumbView::updateExifInfo(QString imageFullPath)
{
	Exiv2::Image::AutoPtr exifImage;
	QString key;
	QString val;

	try	{
		exifImage = Exiv2::ImageFactory::open(imageFullPath.toStdString());
		exifImage->readMetadata();
	}
	catch (Exiv2::Error &error) {
		return;
	}

	Exiv2::ExifData &exifData = exifImage->exifData();
	if (!exifData.empty()) {
		Exiv2::ExifData::const_iterator end = exifData.end();
		infoView->addTitleEntry("Exif");
		for (Exiv2::ExifData::const_iterator md = exifData.begin(); md != end; ++md) {
			key = QString::fromUtf8(md->tagName().c_str());
			val = QString::fromUtf8(md->print().c_str());
			infoView->addEntry(key, val);
		}
	}

	Exiv2::IptcData &iptcData = exifImage->iptcData();
	if (!iptcData.empty()) {
		Exiv2::IptcData::iterator end = iptcData.end();
		infoView->addTitleEntry("IPTC");
		for (Exiv2::IptcData::iterator md = iptcData.begin(); md != end; ++md) {
			key = QString::fromUtf8(md->tagName().c_str());
			val = QString::fromUtf8(md->print().c_str());
	   		infoView->addEntry(key, val);
		}
	}

	Exiv2::XmpData &xmpData = exifImage->xmpData();
	if (!xmpData.empty()) {
		Exiv2::XmpData::iterator end = xmpData.end();
		infoView->addTitleEntry("XMP");
		for (Exiv2::XmpData::iterator md = xmpData.begin(); md != end; ++md) {
			key = QString::fromUtf8(md->tagName().c_str());
			val = QString::fromUtf8(md->print().c_str());
			infoView->addEntry(key, val);
		}
	}
}

void ExifTools::copyExif(const QString &sourceStr, const QString &destStr)
{
        Exiv2::Image::AutoPtr sourceImageData =
                Exiv2::ImageFactory::open(QFile::encodeName(sourceStr).data());
        sourceImageData->readMetadata();

        Exiv2::ExifData exifData = sourceImageData->exifData();
        Exiv2::IptcData iptcData = sourceImageData->iptcData();

        Exiv2::ExifThumb exifThumb(exifData);
        exifThumb.erase();

        Exiv2::Image::AutoPtr destImageData =
                Exiv2::ImageFactory::open(QFile::encodeName(destStr).data());
        destImageData->setExifData(exifData);
        destImageData->setIptcData(iptcData);
        destImageData->writeMetadata();
}

bool ImageTags::writeTagsToImage(QString &imageFileName, QSet<QString> &newTags)
{
	QSet<QString> imageTags;
	Exiv2::Image::AutoPtr exifImage;

	try {
		exifImage = Exiv2::ImageFactory::open(imageFileName.toStdString());
		exifImage->readMetadata();

		Exiv2::IptcData newIptcData;

		/* copy existing data */
		Exiv2::IptcData &iptcData = exifImage->iptcData();
		if (!iptcData.empty()) {
			QString key;
			Exiv2::IptcData::iterator end = iptcData.end();
			for (Exiv2::IptcData::iterator iptcIt = iptcData.begin(); iptcIt != end; ++iptcIt) {
				if (iptcIt->tagName() != "Keywords") {
					newIptcData.add(*iptcIt);
				}
	        }
	    }

		/* add new tags */
		QSetIterator<QString> newTagsIt(newTags);
		while (newTagsIt.hasNext()) {
			QString tag = newTagsIt.next();
		    Exiv2::Value::AutoPtr value = Exiv2::Value::create(Exiv2::string);
		    value->read(tag.toStdString());
		    Exiv2::IptcKey key("Iptc.Application2.Keywords");
		    newIptcData.add(key, value.get());
		}

	    exifImage->setIptcData(newIptcData);
	    exifImage->writeMetadata();
   	}
	catch (Exiv2::Error &error) {
		QMessageBox msgBox;
		msgBox.critical(this, tr("Error"), tr("Failed to save tags to ") + imageFileName);
		return false;
	}

	return true;
}

    bool Exiv2ReadingWorker::readMetadata(Models::ArtworkMetadata *artwork, ImportDataResult &importResult) {
        const QString &filepath = artwork->getFilepath();

#if defined(Q_OS_WIN)
        Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filepath.toStdWString());
#else
        Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filepath.toStdString());
#endif
        Q_ASSERT(image.get() != NULL);
        image->readMetadata();

        Exiv2::XmpData &xmpData = image->xmpData();
        Exiv2::ExifData &exifData = image->exifData();
        Exiv2::IptcData &iptcData = image->iptcData();

        QString iptcEncoding = getIptcCharset(iptcData).toUpper();
        bool isIptcUtf8 = (iptcEncoding == QLatin1String("UTF-8")) || (iptcEncoding == QLatin1String("UTF8"));

        importResult.FilePath = filepath;
        importResult.Description = retrieveDescription(xmpData, exifData, iptcData, isIptcUtf8);
        importResult.Title = retrieveTitle(xmpData, exifData, iptcData, isIptcUtf8);
        importResult.Keywords = retrieveKeywords(xmpData, exifData, iptcData, isIptcUtf8);
        importResult.DateTimeOriginal = retrieveDateTime(xmpData, exifData, iptcData, isIptcUtf8);

        MetadataSavingCopy copy;
        if (copy.readFromFile(filepath)) {
            importResult.BackupDict = copy.getInfo();
        }

        QFileInfo fi(filepath);
        importResult.FileSize = fi.size();

        Models::ImageArtwork *imageArtwork = dynamic_cast<Models::ImageArtwork*>(artwork);
        if (imageArtwork != NULL) {
            QImageReader reader(filepath);
            importResult.ImageSize = reader.size();
        }

        return true;
    }

int main(int argc, char* const argv[])
try {
    if (argc != 3) {
        std::cout << "Usage: " << argv[0] << " image datafile\n";
        return 1;
    }
    std::string file(argv[1]);
    std::string data(argv[2]);

    // Read data file into data buffer
    Exiv2::FileIo io(data);
    if (io.open() != 0) {
      throw Exiv2::Error(Exiv2::kerDataSourceOpenFailed, io.path(), Exiv2::strError());
    }
    Exiv2::DataBuf buf((long)io.size());
    std::cout << "Reading " << buf.size_ << " bytes from " << data << "\n";
    io.read(buf.pData_, buf.size_);
    if (io.error() || !io.eof()) throw Exiv2::Error(Exiv2::kerFailedToReadImageData);

    // Read metadata from file
    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);
    assert(image.get() != 0);
    image->readMetadata();

    // Set Preview field to the content of the data file
    Exiv2::DataValue value;
    value.read(buf.pData_, buf.size_);
    Exiv2::IptcData& iptcData = image->iptcData();
    std::cout << "IPTC fields: " << iptcData.size() << "\n";
    iptcData["Iptc.Application2.Preview"] = value;
    std::cout << "IPTC fields: " << iptcData.size() << "\n";

    // Set IRB, compare with IPTC raw data
    Exiv2::DataBuf irb = Exiv2::Photoshop::setIptcIrb(0, 0, iptcData);
    std::cout << "IRB buffer : " << irb.size_ << "\n";
    const Exiv2::byte* record;
    uint32_t sizeHdr;
    uint32_t sizeData;
    Exiv2::Photoshop::locateIptcIrb(irb.pData_, irb.size_, &record, &sizeHdr, &sizeData);
    Exiv2::DataBuf rawIptc = Exiv2::IptcParser::encode(iptcData);
    std::cout << "Comparing IPTC and IRB size... ";
    if (static_cast<uint32_t>(rawIptc.size_) != sizeData) {
        std::cout << "not ";
    }
    std::cout << "ok\n";

    std::cout << "Comparing IPTC and IRB data... ";
    if (0 != memcmp(rawIptc.pData_, record + sizeHdr, sizeData)) {
        std::cout << "not ";
    }
    std::cout << "ok\n";

    // Set Iptc data and write it to the file
    image->writeMetadata();

    return 0;
}
catch (Exiv2::AnyError& e) {
    std::cout << "Caught Exiv2 exception '" << e << "'\n";
    return -1;
}

bool KExiv2::load(const QString& filePath) const
{
    if (filePath.isEmpty())
    {
        return false;
    }

    d->filePath      = filePath;
    bool hasLoaded   = false;

    try
    {
        Exiv2::Image::AutoPtr image;

        image        = Exiv2::ImageFactory::open((const char*)(QFile::encodeName(filePath)).constData());

        image->readMetadata();

        // Size and mimetype ---------------------------------

        d->pixelSize = QSize(image->pixelWidth(), image->pixelHeight());
        d->mimeType  = QString::fromLatin1(image->mimeType().c_str());

        // Image comments ---------------------------------

        d->imageComments() = image->comment();

        // Exif metadata ----------------------------------

        d->exifMetadata() = image->exifData();

        // Iptc metadata ----------------------------------

        d->iptcMetadata() = image->iptcData();

#ifdef _XMP_SUPPORT_

        // Xmp metadata -----------------------------------
        d->xmpMetadata() = image->xmpData();

#endif // _XMP_SUPPORT_

        hasLoaded = true;
    }
    catch( Exiv2::Error& e )
    {
        d->printExiv2ExceptionError(QString::fromLatin1("Cannot load metadata from file "), e);
    }
    catch(...)
    {
        qCCritical(LIBKEXIV2_LOG) << "Default exception from Exiv2";
    }

#ifdef _XMP_SUPPORT_
    try
    {
        if (d->useXMPSidecar4Reading)
        {
            QString xmpSidecarPath = sidecarFilePathForFile(filePath);
            QFileInfo xmpSidecarFileInfo(xmpSidecarPath);

            Exiv2::Image::AutoPtr xmpsidecar;

            if (xmpSidecarFileInfo.exists() && xmpSidecarFileInfo.isReadable())
            {
                // Read sidecar data
                xmpsidecar = Exiv2::ImageFactory::open(QFile::encodeName(xmpSidecarPath).constData());
                xmpsidecar->readMetadata();

                // Merge
                d->loadSidecarData(xmpsidecar);
                hasLoaded = true;
            }
        }
    }
    catch( Exiv2::Error& e )
    {
        d->printExiv2ExceptionError(QString::fromLatin1("Cannot load XMP sidecar"), e);
    }
    catch(...)
    {
        qCCritical(LIBKEXIV2_LOG) << "Default exception from Exiv2";
    }

#endif // _XMP_SUPPORT_

    return hasLoaded;
}

//.........这里部分代码省略.........
			//if(!info.isFile())
			//	continue;
			//QString ext = info.suffix().toLower();
			//if(ext != "jpg" || ext != "png" || ext != "jpeg")
			//	continue;
			
			bool flipText = true;
			
			QString fullFile = info.absoluteFilePath();
			qDebug() << "SlideShowWindow: Loading "<<fullFile;//<<" (ext:"<<ext<<")";
			GLScene *scene = new GLScene();
			{
				QString comment = "";
				QString datetime = "";
				try
				{
					Exiv2::Image::AutoPtr exiv = Exiv2::ImageFactory::open(fullFile.toStdString()); 
					if(exiv.get() != 0)
					{
						exiv->readMetadata();
						Exiv2::ExifData& exifData = exiv->exifData();
						if (exifData.empty()) 
						{
							qDebug() << fullFile << ": No Exif data found in the file";
						}
		
						comment = exifData["Exif.Image.ImageDescription"].toString().c_str();
						comment = GLTextDrawable::htmlToPlainText(comment);
						
						datetime = exifData["Exif.Photo.DateTimeOriginal"].toString().c_str();
			
						if(comment.trimmed().isEmpty())
						{
							Exiv2::IptcData& iptcData = exiv->iptcData();
							comment = iptcData["Iptc.Application2.Caption"].toString().c_str();
							comment = GLTextDrawable::htmlToPlainText(comment);
							
							if (exifData.empty()) 
							{
								qDebug() << fullFile << ": No IPTC data found in the file";
							}
							else
							{
								qDebug() << "SlideShowWindow: IPTC Caption:"<<comment;
							}
						}
						else
						{
							qDebug() << "SlideShowWindow: EXIF Caption:"<<comment;
						}
						
						
					}
				}
				catch (Exiv2::AnyError& e) 
				{
					std::cout << "Caught Exiv2 exception '" << e << "'\n";
					//return -1;
				}
				
				GLImageDrawable *image = new GLImageDrawable(fullFile);
				
				if(canvasSize.width() > 1000)
				{
					image->setRect(QRectF(QPointF(0,0),QSize(1680,canvasSize.height())));
				}

void MetaEngine::Private::loadSidecarData(Exiv2::Image::AutoPtr xmpsidecar)
{
    // Having a sidecar is a special situation.
    // The sidecar data often "dominates", see in particular bug 309058 for important aspects:
    // If a field is removed from the sidecar, we must ignore (older) data for this field in the file.

    // First: Ignore file XMP, only use sidecar XMP
    xmpMetadata()     = xmpsidecar->xmpData();
    loadedFromSidecar = true;

    // EXIF
    // Four groups of properties are mapped between EXIF and XMP:
    // Date/Time, Description, Copyright, Creator
    // A few more tags are defined "writeback" tags in the XMP specification, the sidecar value therefore overrides the Exif value.
    // The rest is kept side-by-side.
    // (to understand, remember that the xmpsidecar's Exif data is actually XMP data mapped back to Exif)

    // Description, Copyright and Creator is dominated by the sidecar: Remove file Exif fields, if field not in XMP.
    ExifMergeHelper exifDominatedHelper;
    exifDominatedHelper << QLatin1String("Exif.Image.ImageDescription")
                        << QLatin1String("Exif.Photo.UserComment")
                        << QLatin1String("Exif.Image.Copyright")
                        << QLatin1String("Exif.Image.Artist");
    exifDominatedHelper.exclusiveMerge(xmpsidecar->exifData(), exifMetadata());
    // Date/Time and "the few more" from the XMP spec are handled as writeback
    // Note that Date/Time mapping is slightly contradictory in latest specs.
    ExifMergeHelper exifWritebackHelper;
    exifWritebackHelper << QLatin1String("Exif.Image.DateTime")
                        << QLatin1String("Exif.Image.DateTime")
                        << QLatin1String("Exif.Photo.DateTimeOriginal")
                        << QLatin1String("Exif.Photo.DateTimeDigitized")
                        << QLatin1String("Exif.Image.Orientation")
                        << QLatin1String("Exif.Image.XResolution")
                        << QLatin1String("Exif.Image.YResolution")
                        << QLatin1String("Exif.Image.ResolutionUnit")
                        << QLatin1String("Exif.Image.Software")
                        << QLatin1String("Exif.Photo.RelatedSoundFile");
    exifWritebackHelper.mergeFields(xmpsidecar->exifData(), exifMetadata());

    // IPTC
    // These fields cover almost all relevant IPTC data and are defined in the XMP specification for reconciliation.
    IptcMergeHelper iptcDominatedHelper;
    iptcDominatedHelper << QLatin1String("Iptc.Application2.ObjectName")
                        << QLatin1String("Iptc.Application2.Urgency")
                        << QLatin1String("Iptc.Application2.Category")
                        << QLatin1String("Iptc.Application2.SuppCategory")
                        << QLatin1String("Iptc.Application2.Keywords")
                        << QLatin1String("Iptc.Application2.SubLocation")
                        << QLatin1String("Iptc.Application2.SpecialInstructions")
                        << QLatin1String("Iptc.Application2.Byline")
                        << QLatin1String("Iptc.Application2.BylineTitle")
                        << QLatin1String("Iptc.Application2.City")
                        << QLatin1String("Iptc.Application2.ProvinceState")
                        << QLatin1String("Iptc.Application2.CountryCode")
                        << QLatin1String("Iptc.Application2.CountryName")
                        << QLatin1String("Iptc.Application2.TransmissionReference")
                        << QLatin1String("Iptc.Application2.Headline")
                        << QLatin1String("Iptc.Application2.Credit")
                        << QLatin1String("Iptc.Application2.Source")
                        << QLatin1String("Iptc.Application2.Copyright")
                        << QLatin1String("Iptc.Application2.Caption")
                        << QLatin1String("Iptc.Application2.Writer");
    iptcDominatedHelper.exclusiveMerge(xmpsidecar->iptcData(), iptcMetadata());

    IptcMergeHelper iptcWritebackHelper;
    iptcWritebackHelper << QLatin1String("Iptc.Application2.DateCreated")
                        << QLatin1String("Iptc.Application2.TimeCreated")
                        << QLatin1String("Iptc.Application2.DigitizationDate")
                        << QLatin1String("Iptc.Application2.DigitizationTime");
    iptcWritebackHelper.mergeFields(xmpsidecar->iptcData(), iptcMetadata());

    /*
     * TODO: Exiv2 (referring to 0.23) does not correctly synchronize all times values as given below.
     * Time values and their synchronization:
     * Original Date/Time – Creation date of the intellectual content (e.g. the photograph),
       rather than the creatio*n date of the content being shown
        Exif DateTimeOriginal (36867, 0x9003) and SubSecTimeOriginal (37521, 0x9291)
        IPTC DateCreated (IIM 2:55, 0x0237) and TimeCreated (IIM 2:60, 0x023C)
        XMP (photoshop:DateCreated)
     * Digitized Date/Time – Creation date of the digital representation
        Exif DateTimeDigitized (36868, 0x9004) and SubSecTimeDigitized (37522, 0x9292)
        IPTC DigitalCreationDate (IIM 2:62, 0x023E) and DigitalCreationTime (IIM 2:63, 0x023F)
        XMP (xmp:CreateDate)
     * Modification Date/Time – Modification date of the digital image file
        Exif DateTime (306, 0x132) and SubSecTime (37520, 0x9290)
        XMP (xmp:ModifyDate)
     */
}