Image::AutoPtr ImageFactory::open(const std::string& path)
{
BasicIo::AutoPtr io(new FileIo(path));
Image::AutoPtr image = open(io); // may throw
if (image.get() == 0) throw Error(11, path);
return image;
}
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 ;
}
Image::AutoPtr ImageFactory::create(int type)
{
BasicIo::AutoPtr io(new MemIo);
Image::AutoPtr image = create(type, io);
if (image.get() == 0) throw Error(13, type);
return image;
}
Image::AutoPtr ImageFactory::open(const byte* data, long size)
{
BasicIo::AutoPtr io(new MemIo(data, size));
Image::AutoPtr image = open(io); // may throw
if (image.get() == 0) throw Error(12);
return image;
}
// *****************************************************************************
// Main
int main(int argc, char* const argv[])
{
try {
if (argc != 2) {
std::cout << "Usage: " << argv[0] << " image\n";
std::cout << "Commands read from stdin.\n";
return 1;
}
Image::AutoPtr image = ImageFactory::open(argv[1]);
assert (image.get() != 0);
image->readMetadata();
// Process commands
std::string line;
int num = 0;
std::getline(std::cin, line);
while (line.length() && processLine(line, ++num, image->iptcData())) {
std::getline(std::cin, line);
}
// Save any changes
image->writeMetadata();
return 0;
}
catch (AnyError& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return -1;
}
}
Image::AutoPtr ImageFactory::create(int type,
const std::string& path)
{
std::auto_ptr<FileIo> fileIo(new FileIo(path));
// Create or overwrite the file, then close it
if (fileIo->open("w+b") != 0) {
throw Error(10, path, "w+b", strError());
}
fileIo->close();
BasicIo::AutoPtr io(fileIo);
Image::AutoPtr image = create(type, io);
if (image.get() == 0) throw Error(13, type);
return image;
}
int IptcData::erase(const std::string& path) const
{
if (!fileExists(path, true)) return -1;
Image::AutoPtr image = ImageFactory::instance().open(path);
if (image.get() == 0) return -2;
// Read all metadata then erase only Iptc data
int rc = image->readMetadata();
if (rc == 0) {
image->clearIptcData();
rc = image->writeMetadata();
}
return rc;
} // IptcData::erase
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 ;
}
int IptcData::write(const std::string& path)
{
// Remove the Iptc section from the file if there is no metadata
if (count() == 0) return erase(path);
if (!fileExists(path, true)) return -1;
Image::AutoPtr image = ImageFactory::instance().open(path);
if (image.get() == 0) return -2;
DataBuf buf(copy());
// Read all metadata to preserve non-Iptc data
int rc = image->readMetadata();
if (rc == 0) {
image->setIptcData(buf.pData_, buf.size_);
rc = image->writeMetadata();
}
return rc;
} // IptcData::write
int IptcData::read(const std::string& path)
{
if (!fileExists(path, true)) return -1;
Image::AutoPtr image = ImageFactory::instance().open(path);
if (image.get() == 0) {
// We don't know this type of file
return -2;
}
int rc = image->readMetadata();
if (rc == 0) {
if (image->sizeIptcData() > 0) {
rc = read(image->iptcData(), image->sizeIptcData());
}
else {
rc = 3;
}
}
return rc;
}
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
