C++ AutoPtr::writeMetadata方法代码示例

int populateMetaExif(std::string file, std::string plate)
{
	try 
	{
		Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);
		std::string comment = plate + ' '+ "LOT50"; //Add code to get information about lot
	
		if(!image.get())
		{
			throw Exiv2::Error(1, "Failed to open image");
		}
		
		image->readMetadata();
		Exiv2::ExifData &exifData = image->exifData();
	
		
		exifData["Exif.Photo.UserComment"]= comment;
		//std::cout<< "Writing Exiv User Comment "<< exifData["Exif.Image.ImageDescription"] <<"\n";
		image->writeMetadata();
		
	} catch (Exiv2::AnyError& e) {
		std::cout << "Problem Writing Metadata '" << e << "'\n";
		return -1;
	}
	
	return 0;
}

void ExifReaderWriter::saveExifGps(QString pictureName, double latitude, double longitude, double altitude)
{
    qDebug() << "saveExifGps" << pictureName << latitude << longitude << altitude;
    Exiv2::Image::AutoPtr image = openExif(pictureName);
    if(image.get() == 0)
        return;

    if(image->exifData().empty())
    {
        Exiv2::ExifData exifDataTmp;
        image->setExifData(exifDataTmp);
    }

    Exiv2::ExifData &exifData = image->exifData();

    writeData(exifData, "Exif.GPSInfo.GPSLatitude", exifLatLonString(latitude));
    writeData(exifData, "Exif.GPSInfo.GPSLongitude", exifLatLonString(longitude));

    writeData(exifData, "Exif.GPSInfo.GPSLatitudeRef", (latitude<0 ? "S" : "N"));
    writeData(exifData, "Exif.GPSInfo.GPSLongitudeRef", (longitude<0 ? "W" : "E"));

    if(altitude > -999)
    {
        writeData(exifData, "Exif.GPSInfo.GPSAltitude", (QString("%1/%2").arg(abs(round(altitude * 1000))).arg(1000)));
        writeData(exifData, "Exif.GPSInfo.GPSAltitudeRef", (altitude<0 ? "1" : "0"));
    }
    image->writeMetadata();
}

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

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
    assert(image.get() != 0);
    image->readMetadata();

    Exiv2::XmpData xmpData;
    Exiv2::copyExifToXmp(image->exifData(), xmpData);

    Exiv2::ExifData exifData;
    Exiv2::copyXmpToExif(xmpData, exifData);

    image->setXmpData(xmpData);
    image->setExifData(exifData);
    image->writeMetadata();
    
    return 0;
}
catch (Exiv2::AnyError& e) {
    std::cout << "Caught Exiv2 exception '" << e << "'\n";
    return -1;
}

void write(const std::string& file, Exiv2::ExifData& ed)
{
    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);
    assert (image.get() != 0);
    image->setExifData(ed);
    image->writeMetadata();
}

void ExifTransfer::copyMetadata() {
    try {
        dst = Exiv2::ImageFactory::open(BasicIo::AutoPtr(new MemIo(data, dataSize)));
        dst->readMetadata();
    } catch (Exiv2::Error & e) {
        std::cerr << "Exiv2 error: " << e.what() << std::endl;
        return;
    }
    try {
        src = Exiv2::ImageFactory::open(srcFile.toLocal8Bit().constData());
        src->readMetadata();
        copyXMP();
        copyIPTC();
        copyEXIF();
    } catch (Exiv2::Error & e) {
        std::cerr << "Exiv2 error: " << e.what() << std::endl;
        // At least we have to set the SubImage1 file type to Primary Image
        dst->exifData()["Exif.SubImage1.NewSubfileType"] = 0;
    }
    try {
        dst->writeMetadata();
        FileIo fileIo(dstFile.toLocal8Bit().constData());
        fileIo.open("wb");
        fileIo.write(dst->io());
        fileIo.close();
    } catch (Exiv2::Error & e) {
        std::cerr << "Exiv2 error: " << e.what() << std::endl;
    }
}

bool ptImageHelper::TransferExif(const QString ASourceFile, const QString ATargetFile)
{
  if (ASourceFile == ATargetFile      ||
      ASourceFile.trimmed().isEmpty() ||
      ATargetFile.trimmed().isEmpty())
    return false;

  try {
    if (Exiv2::ImageFactory::getType(ASourceFile.toLocal8Bit().data()) == Exiv2::ImageType::none)
      return false;

    Exiv2::Image::AutoPtr hSourceImage = Exiv2::ImageFactory::open(ASourceFile.toLocal8Bit().data());

    if (!hSourceImage.get()) return false;

    hSourceImage->readMetadata();

    Exiv2::Image::AutoPtr hTargetImage = Exiv2::ImageFactory::open(ATargetFile.toLocal8Bit().data());

    hTargetImage->clearMetadata();
    hTargetImage->setMetadata(*hSourceImage);
    hTargetImage->writeMetadata();
    return true;
  } catch (Exiv2::AnyError& Error) {
    if (Settings->GetInt("JobMode") == 0) {
      ptMessageBox::warning(0 ,"Exiv2 Error","No exif data written!\nCaught Exiv2 exception '" + QString(Error.what()) + "'\n");
    } else {
      std::cout << "Caught Exiv2 exception '" << Error << "'\n";
    }
  }
  return false;
}

// *****************************************************************************
// 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;
}
}

void Frame::save(std::string dir) {
    std::string path = dir + "/" + id;
    imwrite(path, *img);
    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(path);
    image->readMetadata();
    Exiv2::ExifData &exifData = image->exifData();
    std::stringstream ss;
    ss << std::setprecision(12) << data.lat << " " << data.lon << " " << data.altitude << " " << data.heading << " " << data.time;
    exifData["Exif.Photo.UserComment"] = ss.str();
    image->writeMetadata();
}

int RemoveGPSExif(const char* File, int NoChangeMtime)
{
	struct stat statbuf;
	struct stat statbuf2;
	struct utimbuf utb;
	if (NoChangeMtime)
		stat(File, &statbuf);

	// Open the file and start reading.
	Exiv2::Image::AutoPtr Image;
	
	try {
		Image = Exiv2::ImageFactory::open(File);
	} catch (Exiv2::Error e) {
		DEBUGLOG("Failed to open file %s.\n", File);
		return 0;
	}
	Image->readMetadata();
	if (Image.get() == NULL)
	{
		// It failed if we got here.
		DEBUGLOG("Failed to read file %s %s.\n",
			 File, Exiv2::strError().c_str());
		return 0;
	}

	Exiv2::ExifData &ExifInfo = Image->exifData();

	if (ExifInfo.count() == 0)
	{
		DEBUGLOG("No EXIF tags in file %s.\n", File);
		return 0;
	}

	EraseGpsTags(ExifInfo);
	
	try {
		Image->writeMetadata();
	} catch (Exiv2::Error e) {
		DEBUGLOG("Failed to write to file %s.\n", File);
		return 0;
	}

	if (NoChangeMtime)
	{
		stat(File, &statbuf2);
		utb.actime = statbuf2.st_atime;
		utb.modtime = statbuf.st_mtime;
		utime(File, &utb);
	}

	return 1;

}

// Saves Exifdata to given file
void FlickrUpload::saveExifData(Exiv2::ExifData *exifData, QByteArray *image){
    try {
        Exiv2::Image::AutoPtr destImage = Exiv2::ImageFactory::open(
                    (Exiv2::byte*)image->constData(), (long)image->size());
        destImage->setExifData(*exifData);
        destImage->writeMetadata();
        // get updated image data
        Exiv2::BasicIo&  rawio = destImage->io();
        Exiv2::DataBuf  dbuf = rawio.read( rawio.size() );
        image->clear();
        image->append(QByteArray::fromRawData((char*)dbuf.pData_, dbuf.size_));
    } catch (Exiv2::Error& e) {
        qCritical("[SaveFile] %s", e.what());
    }
}

void ImageView::saveImage()
{
	Exiv2::Image::AutoPtr image;
	bool exifError = false;

	if (newImage)
	{
		saveImageAs();
		return;
	}

	setFeedback(tr("Saving..."));

	try
	{
		image = Exiv2::ImageFactory::open(currentImageFullPath.toStdString());
		image->readMetadata();
	}
	catch (Exiv2::Error &error)
	{
		exifError = true;
	}

	QImageReader imgReader(currentImageFullPath);
	if (!displayPixmap.save(currentImageFullPath, imgReader.format().toUpper(),
																			GData::defaultSaveQuality))
	{
		QMessageBox msgBox;
		msgBox.critical(this, tr("Error"), tr("Failed to save image."));
		return;
	}

	if (!exifError)
	{
		try
		{
			image->writeMetadata();
		}
		catch (Exiv2::Error &error)
		{
			QMessageBox msgBox;
			msgBox.critical(this, tr("Error"), tr("Failed to save Exif metadata."));
		}
	}

	reload();
	setFeedback(tr("Image saved."));
}

// *****************************************************************************
// Main
int main(int argc, char* const argv[])
try {

    if (argc != 2) {
        std::cout << "Usage: " << argv[0] << " file\n";
        return 1;
    }

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
    assert (image.get() != 0);
    image->readMetadata();
    Exiv2::ExifData &exifData = image->exifData();

    /*
      Exiv2 uses a CommentValue for Exif user comments. The format of the
      comment string includes an optional charset specification at the beginning:

      [charset=["]Ascii|Jis|Unicode|Undefined["] ]comment

      Undefined is used as a default if the comment doesn't start with a charset
      definition.

      Following are a few examples of valid comments. The last one is written to
      the file.
     */
    exifData["Exif.Photo.UserComment"]
        = "charset=\"Unicode\" An Unicode Exif comment added with Exiv2";
    exifData["Exif.Photo.UserComment"]
        = "charset=\"Undefined\" An undefined Exif comment added with Exiv2";
    exifData["Exif.Photo.UserComment"]
        = "Another undefined Exif comment added with Exiv2";
    exifData["Exif.Photo.UserComment"]
        = "charset=Ascii An ASCII Exif comment added with Exiv2";

    std::cout << "Writing user comment '"
              << exifData["Exif.Photo.UserComment"]
              << "' back to the image\n";

    image->writeMetadata();

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

void ImageView::saveImageAs()
{
	Exiv2::Image::AutoPtr exifImage;
	Exiv2::Image::AutoPtr newExifImage;
	bool exifError = false;

	setCursorHiding(false);

	QString fileName = QFileDialog::getSaveFileName(this,
		tr("Save image as"),
		currentImageFullPath,
		tr("Images") + " (*.jpg *.jpeg *.jpe *.png *.bmp *.ppm *.pgm *.pbm *.xbm *.xpm)");
		
	if (!fileName.isEmpty()) {
		try {
			exifImage = Exiv2::ImageFactory::open(currentImageFullPath.toStdString());
			exifImage->readMetadata();
		}
		catch (Exiv2::Error &error)	{
			exifError = true;
		}

	
		if (!displayPixmap.save(fileName, 0, GData::defaultSaveQuality)) {
			QMessageBox msgBox;
			msgBox.critical(this, tr("Error"), tr("Failed to save image."));
		} else {
			if (!exifError) {
				try	{
					newExifImage = Exiv2::ImageFactory::open(fileName.toStdString());
					newExifImage->setMetadata(*exifImage);
					newExifImage->writeMetadata();
				}
				catch (Exiv2::Error &error) {
					exifError = true;
				}
			}
		
			setFeedback(tr("Image saved."));
		}
	}
	if (mainWindow->isFullScreen()) {
		setCursorHiding(true);
	}
}

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;
}