int exiv2_metadata_file_open(plugin_info* plugin, const char* fileName)
{
try
{
Image::AutoPtr image = Exiv2::ImageFactory::open(fileName);
if(!image->good())
{
// cerr << "Image could not be read by Exiv2: " << fileName << endl;
return -1;
}
image->readMetadata();
if(image->exifData().empty()) // && image->iptcData().empty())
{
// cout << "Image had no EXIF/IPTC metadata: " << fileName << endl;
return -1;
}
plugin->user_data = new Image::AutoPtr(image);
}
catch(...)
{
cerr << "Exception in Exiv2 Metadata plugin" << endl;
return -1;
}
return 0;
}
time_t readImageTime(std::string path,std::string* pS=NULL)
{
using namespace Exiv2;
time_t result = 0 ;
static std::map<std::string,time_t> cache;
if ( cache.count(path) == 1 ) return cache[path];
const char* dateStrings[] =
{ "Exif.Photo.DateTimeOriginal"
, "Exif.Photo.DateTimeDigitized"
, "Exif.Image.DateTime"
, NULL
};
const char* ds = dateStrings[0] ;
while ( !result && ds++ ) {
try {
Image::AutoPtr image = ImageFactory::open(path);
if ( image.get() ) {
image->readMetadata();
ExifData &exifData = image->exifData();
// printf("%s => %s\n",(ds-1), exifData[ds-1].toString().c_str());
result = parseTime(exifData[ds-1].toString().c_str(),true);
if ( result && pS ) *pS = exifData[ds-1].toString();
}
} catch ( ... ) {};
}
if ( result ) cache[path] = result;
return result ;
}
/* Read the EXIF metadata into the struct
* A non-zero return code indicates some data could not be read,
* which may require further action.
*/
int exiv2ReadExif(plugin_info* plugin, metadata_t* metadata)
{
int errors = 0;
try
{
Image::AutoPtr image = *(Image::AutoPtr*)(plugin->user_data);
const ExifData& exif = image->exifData();
const ExifData::const_iterator noValue = exif.end();
ExifData::const_iterator value;
errors += set_width(exif, metadata->width);
errors += set_height(exif, metadata->height);
errors += set_date(exif, metadata->date);
}
catch(Exiv2::Error& err)
{
cerr << "Exiv2::Error: " << err.what() << endl;
return 1;
}
catch(...)
{
cerr << "Exception in Exiv2 metadata plugin" << endl;
return 1;
}
return errors; // Non-zero indicates at least one field could not be read
}
bool readImage(const char* path,Options& /* options */)
{
using namespace Exiv2;
bool bResult = false ;
try {
Image::AutoPtr image = ImageFactory::open(path);
if ( image.get() ) {
image->readMetadata();
ExifData &exifData = image->exifData();
bResult = !exifData.empty();
}
} catch ( ... ) {};
return bResult ;
}
void PgfImage::readMetadata()
{
#ifdef DEBUG
std::cerr << "Exiv2::PgfImage::readMetadata: Reading PGF file " << io_->path() << "\n";
#endif
if (io_->open() != 0)
{
throw Error(9, io_->path(), strError());
}
IoCloser closer(*io_);
// Ensure that this is the correct image type
if (!isPgfType(*io_, true))
{
if (io_->error() || io_->eof()) throw Error(14);
throw Error(3, "PGF");
}
clearMetadata();
readPgfMagicNumber(*io_);
uint32_t headerSize = readPgfHeaderSize(*io_);
readPgfHeaderStructure(*io_, &pixelWidth_, &pixelHeight_);
// And now, the most interresting, the user data byte array where metadata are stored as small image.
long size = 8 + headerSize - io_->tell();
#ifdef DEBUG
std::cout << "Exiv2::PgfImage::readMetadata: Found Image data (" << size << " bytes)\n";
#endif
if (size < 0) throw Error(20);
if (size == 0) return;
DataBuf imgData(size);
std::memset(imgData.pData_, 0x0, imgData.size_);
long bufRead = io_->read(imgData.pData_, imgData.size_);
if (io_->error()) throw Error(14);
if (bufRead != imgData.size_) throw Error(20);
Image::AutoPtr image = Exiv2::ImageFactory::open(imgData.pData_, imgData.size_);
image->readMetadata();
exifData() = image->exifData();
iptcData() = image->iptcData();
xmpData() = image->xmpData();
} // PgfImage::readMetadata
void Rw2Image::readMetadata()
{
#ifdef DEBUG
std::cerr << "Reading RW2 file " << io_->path() << "\n";
#endif
if (io_->open() != 0) {
throw Error(9, io_->path(), strError());
}
IoCloser closer(*io_);
// Ensure that this is the correct image type
if (!isRw2Type(*io_, false)) {
if (io_->error() || io_->eof()) throw Error(14);
throw Error(3, "RW2");
}
clearMetadata();
std::ofstream devnull;
printStructure(devnull, kpsRecursive, 0);
ByteOrder bo = Rw2Parser::decode(exifData_,
iptcData_,
xmpData_,
io_->mmap(),
io_->size());
setByteOrder(bo);
// A lot more metadata is hidden in the embedded preview image
// Todo: This should go into the Rw2Parser, but for that it needs the Image
PreviewManager loader(*this);
PreviewPropertiesList list = loader.getPreviewProperties();
// Todo: What if there are more preview images?
if (list.size() > 1) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "RW2 image contains more than one preview. None used.\n";
#endif
}
if (list.size() != 1) return;
ExifData exifData;
PreviewImage preview = loader.getPreviewImage(*list.begin());
Image::AutoPtr image = ImageFactory::open(preview.pData(), preview.size());
if (image.get() == 0) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Failed to open RW2 preview image.\n";
#endif
return;
}
image->readMetadata();
ExifData& prevData = image->exifData();
if (!prevData.empty()) {
// Filter duplicate tags
for (ExifData::const_iterator pos = exifData_.begin(); pos != exifData_.end(); ++pos) {
if (pos->ifdId() == panaRawId) continue;
ExifData::iterator dup = prevData.findKey(ExifKey(pos->key()));
if (dup != prevData.end()) {
#ifdef DEBUG
std::cerr << "Filtering duplicate tag " << pos->key()
<< " (values '" << pos->value()
<< "' and '" << dup->value() << "')\n";
#endif
prevData.erase(dup);
}
}
}
// Remove tags not applicable for raw images
static const char* filteredTags[] = {
"Exif.Photo.ComponentsConfiguration",
"Exif.Photo.CompressedBitsPerPixel",
"Exif.Panasonic.ColorEffect",
"Exif.Panasonic.Contrast",
"Exif.Panasonic.NoiseReduction",
"Exif.Panasonic.ColorMode",
"Exif.Panasonic.OpticalZoomMode",
"Exif.Panasonic.Contrast",
"Exif.Panasonic.Saturation",
"Exif.Panasonic.Sharpness",
"Exif.Panasonic.FilmMode",
"Exif.Panasonic.SceneMode",
"Exif.Panasonic.WBRedLevel",
"Exif.Panasonic.WBGreenLevel",
"Exif.Panasonic.WBBlueLevel",
"Exif.Photo.ColorSpace",
"Exif.Photo.PixelXDimension",
"Exif.Photo.PixelYDimension",
"Exif.Photo.SceneType",
"Exif.Photo.CustomRendered",
"Exif.Photo.DigitalZoomRatio",
"Exif.Photo.SceneCaptureType",
"Exif.Photo.GainControl",
"Exif.Photo.Contrast",
"Exif.Photo.Saturation",
"Exif.Photo.Sharpness",
"Exif.Image.PrintImageMatching",
"Exif.Image.YCbCrPositioning"
};
for (unsigned int i = 0; i < EXV_COUNTOF(filteredTags); ++i) {
ExifData::iterator pos = prevData.findKey(ExifKey(filteredTags[i]));
if (pos != prevData.end()) {
#ifdef DEBUG
std::cerr << "Exif tag " << pos->key() << " removed\n";
#endif
prevData.erase(pos);
}
}
// Add the remaining tags
for (ExifData::const_iterator pos = prevData.begin(); pos != prevData.end(); ++pos) {
exifData_.add(*pos);
}
} // Rw2Image::readMetadata
gboolean
exiv2_load_meta_interface(const gchar *service, RAWFILE *rawfile, guint offset, RSMetadata *meta)
{
try {
Image::AutoPtr img = ImageFactory::open((byte*)raw_get_map(rawfile), raw_get_filesize(rawfile));
img->readMetadata();
ExifData &exifData = img->exifData();
#if EXIV2_TEST_VERSION(0,17,0)
/* We perfer XMP data, so copy it to EXIF */
XmpData &xmpData = img->xmpData();
if (!xmpData.empty())
copyXmpToExif(xmpData, exifData);
#endif
/* Parse Exif Data */
if (!exifData.empty())
{
ExifData::const_iterator i;
i = exifData.findKey(ExifKey("Exif.Image.Make"));
if (i != exifData.end())
set_metadata_maker(i->toString(), meta);
i = exifData.findKey(ExifKey("Exif.Image.Model"));
if (i != exifData.end())
meta->model_ascii = g_strdup(i->toString().c_str());
#if EXIV2_TEST_VERSION(0,19,0)
i = orientation(exifData);
if (i != exifData.end())
{
std::auto_ptr<Exiv2::Value> val = i->getValue();
if (val->count())
{
switch (val->toLong())
{
case 6: meta->orientation = 90;
break;
case 8: meta->orientation = 270;
break;
}
}
}
#endif
i = exifData.findKey(ExifKey("Exif.Image.DateTimeOriginal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Image.DateTime"));
if (i != exifData.end())
{
meta->time_ascii = g_strdup(i->toString().c_str());
meta->timestamp = rs_exiftime_to_unixtime(meta->time_ascii);
}
i = exifData.findKey(ExifKey("Exif.Image.ExposureTime"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ExposureTime"));
if (i != exifData.end())
meta->shutterspeed = 1.0 / i->getValue()->toFloat();
else
{
i = exifData.findKey(ExifKey("Exif.Image.ShutterSpeedValue"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ShutterSpeedValue"));
if (i != exifData.end())
meta->shutterspeed = 1.0 / i->toFloat();
}
i = exifData.findKey(ExifKey("Exif.Image.FNumber"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.FNumber"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Image.ApertureValue"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.ApertureValue"));
if (i != exifData.end())
meta->aperture = i->toFloat();
i = exifData.findKey(ExifKey("Exif.Image.FocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.Photo.FocalLength"));
if (i != exifData.end())
meta->focallength = i->toFloat()-0.01;
#if EXIV2_TEST_VERSION(0,19,0)
i = isoSpeed(exifData);
if (i != exifData.end())
meta->iso = i->toLong();
/* Text based Lens Identifier */
i = lensName(exifData);
if (i != exifData.end())
{
TypeId type = i->typeId();
if (type == unsignedShort || type == unsignedLong || type == signedShort || type == signedLong || type == unsignedByte || type == signedByte)
meta->lens_id = i->toLong();
else if (type == asciiString || type == string)
meta->fixed_lens_identifier = g_strdup(i->toString().c_str());
}
#endif
/* Canon*/
i = exifData.findKey(ExifKey("Exif.CanonCs.Lens"));
if (i != exifData.end()
&& i->value().count() >= 3
&& i->value().typeId() == unsignedShort)
{
float fu = i->value().toFloat(2);
if (fu != 0.0)
{
meta->lens_min_focal = i->toFloat(0) / fu;
meta->lens_max_focal = i->toFloat(1) /fu;
}
}
i = exifData.findKey(ExifKey("Exif.CanonCs.MinAperture"));
if (i != exifData.end())
meta->lens_min_aperture = (gfloat) exp(CanonEv(i->toFloat())*log(2)/2);
i = exifData.findKey(ExifKey("Exif.CanonCs.MaxAperture"));
if (i != exifData.end())
meta->lens_max_aperture = (gfloat) exp(CanonEv(i->toFloat())*log(2)/2);
/* Olympus */
i = exifData.findKey(ExifKey("Exif.OlympusEq.MinFocalLength"));
if (i != exifData.end())
meta->lens_min_focal = i->toFloat();
i = exifData.findKey(ExifKey("Exif.OlympusEq.MaxFocalLength"));
if (i != exifData.end())
meta->lens_max_focal = i->toFloat();
/* Nikon */
i = exifData.findKey(ExifKey("Exif.NikonLd1.MinFocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd2.MinFocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd3.MinFocalLength"));
if (i != exifData.end())
meta->lens_min_focal = 5.0 * pow(2.0, i->toLong()/24.0);
i = exifData.findKey(ExifKey("Exif.NikonLd1.MaxFocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd2.MaxFocalLength"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd3.MaxFocalLength"));
if (i != exifData.end())
meta->lens_max_focal = 5.0 * pow(2.0, i->toLong()/24.0);
i = exifData.findKey(ExifKey("Exif.NikonLd1.MaxApertureAtMinFocal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd2.MaxApertureAtMinFocal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd3.MaxApertureAtMinFocal"));
if (i != exifData.end())
meta->lens_min_aperture = i->toLong()/12.0;
i = exifData.findKey(ExifKey("Exif.NikonLd1.MaxApertureAtMaxFocal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd2.MaxApertureAtMaxFocal"));
if (i == exifData.end())
i = exifData.findKey(ExifKey("Exif.NikonLd3.MaxApertureAtMaxFocal"));
if (i != exifData.end())
meta->lens_max_aperture = i->toLong()/12.0;
/* Fuji */
i = exifData.findKey(ExifKey("Exif.Fujifilm.MinFocalLength"));
if (i != exifData.end())
meta->lens_min_focal = i->toFloat();
i = exifData.findKey(ExifKey("Exif.Fujifilm.MaxFocalLength"));
if (i != exifData.end())
meta->lens_max_focal = i->toFloat();
return TRUE;
}
} catch (Exiv2::Error& e) {
g_debug("Exiv2 Metadata Loader:'%s'", e.what());
}
return FALSE;
}
