C++ AutoPtr::pixelHeight方法代码示例

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;
}

bool MetadataThumbnail::writeThumbnail(bool isMetadataEnabled)
{
    isThumbnailSavedSuccessfully = false;

#ifdef SIR_METADATA_SUPPORT
    if (isMetadataEnabled) {
        MetadataUtils::Metadata metadata;
        if (metadata.read(imagePath, true)) {
            exifStruct_ = metadata.exifStruct()->copy();
            iptcStruct_ = metadata.iptcStruct()->copy();
            Exiv2::Image::AutoPtr image = metadata.imageAutoPtr();
            imageSize = QSize(image->pixelWidth(), image->pixelHeight());
            Exiv2::PreviewManager previewManager (*image);
            Exiv2::PreviewPropertiesList previewList = previewManager.
                    getPreviewProperties();
            if (previewList.empty()) {
                return isThumbnailSavedSuccessfully;
            }
            else { // read from metadata thumnail
                Exiv2::PreviewImage preview = previewManager.getPreviewImage(
                            previewList[0]);
                preview.writeFile(thumbPath.toStdString());
                thumbPath += preview.extension().c_str();
                thumbSize.setWidth(preview.width());
                thumbSize.setHeight(preview.height());
            }
            isThumbnailSavedSuccessfully = true;
            return isThumbnailSavedSuccessfully;
        }
        else {
            return isThumbnailSavedSuccessfully;
        }
    }
#endif // SIR_METADATA_SUPPORT

    return isThumbnailSavedSuccessfully;
}

void scan_exiv2(const class scanner_params &sp,const recursion_control_block &rcb)
{
    assert(sp.sp_version==scanner_params::CURRENT_SP_VERSION);
    if(sp.phase==scanner_params::PHASE_STARTUP){
        assert(sp.info->si_version==scanner_info::CURRENT_SI_VERSION);
	sp.info->name  = "exiv2";
        sp.info->author         = "Simson L. Garfinkel";
        sp.info->description    = "Searches for EXIF information using exiv2";
        sp.info->scanner_version= "1.0";
	sp.info->feature_names.insert("exif");
	sp.info->feature_names.insert("gps");
	sp.info->flags = scanner_info::SCANNER_DISABLED; // disabled because we have be_exif
	return;
    }
    if(sp.phase==scanner_params::PHASE_SHUTDOWN) return;
    if(sp.phase==scanner_params::PHASE_SCAN){

	const sbuf_t &sbuf = sp.sbuf;
	feature_recorder *exif_recorder = sp.fs.get_name("exif");
	feature_recorder *gps_recorder  = sp.fs.get_name("gps");

#ifdef HAVE_EXIV2__LOGMSG__SETLEVEL
	/* New form to suppress error messages on exiv2 */
	Exiv2::LogMsg::setLevel(Exiv2::LogMsg::mute);
#endif    

	size_t pos_max = 1;		// by default, just scan 1 byte
	if(sbuf.bufsize > min_exif_size){
	    pos_max = sbuf.bufsize - min_exif_size; //  we can scan more!
	}
    
	/* Loop through all possible locations in the buffer */
	for(size_t pos=0;pos<pos_max;pos++){
	    size_t count = exif_gulp_size;
	    count = min(count,sbuf.bufsize-pos);
	    //size_t count = sbuf.bufsize-pos; // use all to end

	    /* Explore the beginning of each 512-byte block as well as the starting location
	     * of any JPEG on any boundary. This will cause processing of any multimedia file
	     * that Exiv2 recognizes (for which I do not know all the headers.
	     */
	    if(pos%512==0 || jpeg_start(sbuf+pos)){
		try {
		    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(sbuf.buf+pos,count);
		    if(image->good()){
			image->readMetadata();
		    
			Exiv2::ExifData &exifData = image->exifData();
			if (exifData.empty()) continue;
		    
			/*
			 * Create the MD5 of the first 4K to use as a unique identifier.
			 */
			sbuf_t tohash(sbuf,0,4096);
			string md5_hex = exif_recorder->fs.hasher.func(tohash.buf,tohash.bufsize);

			char xmlbuf[1024];
			snprintf(xmlbuf,sizeof(xmlbuf),
				 "<exiv2><width>%d</width><height>%d</height>",
				 image->pixelWidth(),image->pixelHeight());

			/* Scan through the fields reported by exiv2.
			 * Create XML for each and extract GPS information if present.
			 */
			string photo_time;	// use this when gps_time is not available
			string gps_time;
			string gps_date;
			string gps_lat_ref;
			string gps_lat;
			string gps_lon_ref;
			string gps_lon;
			string gps_ele;
			string gps_speed;
			string gps_course;

                        bool has_gps = false;
                        bool has_gps_date = false;

			string xml = xmlbuf;
			for (Exiv2::ExifData::const_iterator i = exifData.begin();
			    i != exifData.end(); ++i) {

			    if(i->count()>1000) continue;	// ignore long ones

			    string key = string(i->key());
			    xml.append("<"+key+">"+dfxml_writer::xmlescape(i->value().toString())+"</"+key+">");

                            // use Date from Photo unless date from GPS is available
			    if(key=="Exif.Photo.DateTimeOriginal"){
				photo_time = i->value().toString();

				/* change "2011/06/25 12:20:11" to "2011-06-25 12:20:11" */
				std::transform(photo_time.begin(),photo_time.end(),photo_time.begin(),slash_to_dash);

				/* change "2011:06:25 12:20:11" to "2011-06-25 12:20:11" */
                                if (photo_time[4] == ':') {
                                    photo_time[4] = '-';
                                }
                                if (photo_time[7] == ':') {
                                    photo_time[7] = '-';
//.........这里部分代码省略.........

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;
}