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] = '-';
}
/* Change "2011-06-25 12:20:11" to "2011-06-25T12:20:11" */
size_t first_space = photo_time.find(' ');
if(first_space!=string::npos) {
photo_time.replace(first_space,1,"T");
}
} else if(key=="Exif.GPSInfo.GPSTimeStamp") {
has_gps = true;
has_gps_date = true;
gps_time = i->value().toString();
// reformat timestamp to standard ISO8601
// change "12 20 11" to "12:20:11"
if (gps_time.length() == 8) {
if (gps_time[4] == ' ') {
gps_time[4] = ':';
}
if (gps_time[7] == ' ') {
gps_time[7] = ':';
}
}
} else if(key=="Exif.GPSInfo.GPSDateStamp") {
has_gps = true;
has_gps_date = true;
gps_date = i->value().toString();
// reformat timestamp to standard ISO8601
// change "2011:06:25" to "2011-06-25"
if (gps_date.length() == 10) {
if (gps_date[4] == ':') {
gps_date[4] = '-';
}
if (gps_date[7] == ':') {
gps_date[7] = '-';
}
}
} else if(key=="Exif.GPSInfo.GPSLongitudeRef"){
has_gps = true;
gps_lon_ref = fix_gps_ref(i->value().toString());
} else if(key=="Exif.GPSInfo.GPSLongitude"){
has_gps = true;
gps_lon = fix_gps(i->value().toString());
} else if(key=="Exif.GPSInfo.GPSLatitudeRef"){
has_gps = true;
gps_lat_ref = fix_gps_ref(i->value().toString());
} else if(key=="Exif.GPSInfo.GPSLatitude"){
has_gps = true;
gps_lat = fix_gps(i->value().toString());
} else if(key=="Exif.GPSInfo.GPSAltitude"){
has_gps = true;
gps_ele = dtos(rational(i->value().toString()));
} else if(key=="Exif.GPSInfo.GPSSpeed"){
has_gps = true;
gps_speed = dtos(rational(i->value().toString()));
} else if(key=="Exif.GPSInfo.GPSTrack"){
has_gps = true;
gps_course = i->value().toString();
}
}
xml.append("</exiv2>");
// record EXIF
exif_recorder->write(sp.sbuf.pos0+pos,md5_hex,xml);
// record GPS
if (has_gps) {
if (has_gps_date) {
// record the GPS entry using the GPS date
gps_recorder->write(sp.sbuf.pos0+pos,md5_hex,
gps_date+"T"+gps_time+","+gps_lat_ref+gps_lat+","
+gps_lon_ref+gps_lon+","
+gps_ele+","+gps_speed+","+gps_course);
} else {
// record the GPS entry using the date obtained from Photo
gps_recorder->write(sp.sbuf.pos0+pos,md5_hex,
photo_time+","+gps_lat_ref+gps_lat+","
+gps_lon_ref+gps_lon+","
+gps_ele+","+gps_speed+","+gps_course);
}
}
}
}
catch (Exiv2::AnyError &e) { }
catch (std::exception &e) { }
}
}
}
}
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;
}
