Use exiv2 for metadata handling

rtengine/imageio.h

@@ -31,13 +31,12 @@
 #include <memory>
 
 #include <glibmm.h>
-#include <libiptcdata/iptc-data.h>
 #include "rtengine.h"
 #include "imageformat.h"
-#include "../rtexif/rtexif.h"
 #include "imagedimensions.h"
 #include "iimage.h"
 #include "colortemp.h"
+#include "procparams.h"
 
 namespace rtengine
 {
@@ -45,6 +44,24 @@ namespace rtengine
 class ProgressListener;
 class Imagefloat;
 
+class MetadataInfo {
+public:
+    explicit MetadataInfo(const Glib::ustring &src=Glib::ustring()):
+        src_(src) {}
+
+    const Glib::ustring &filename() const { return src_; }
+
+    const rtengine::procparams::ExifPairs &exif() const { return exif_; }
+    const rtengine::procparams::IPTCPairs &iptc() const { return iptc_; }
+    void setExif(const rtengine::procparams::ExifPairs &exif) { exif_ = exif; }
+    void setIptc(const rtengine::procparams::IPTCPairs &iptc) { iptc_ = iptc; }
+
+private:
+    Glib::ustring src_;
+    rtengine::procparams::ExifPairs exif_;
+    rtengine::procparams::IPTCPairs iptc_;
+};
+
 class ImageIO : virtual public ImageDatas
 {
 
@@ -56,12 +73,10 @@ protected:
     char* loadedProfileData;
     bool loadedProfileDataJpg;
     int loadedProfileLength;
-    const std::unique_ptr<procparams::ExifPairs> exifChange;
-    IptcData* iptc;
-    const rtexif::TagDirectory* exifRoot;
     MyMutex imutex;
     IIOSampleFormat sampleFormat;
     IIOSampleArrangement sampleArrangement;
+    MetadataInfo metadataInfo;
 
 private:
     void deleteLoadedProfileData( );
@@ -103,10 +118,11 @@ public:
     cmsHPROFILE getEmbeddedProfile () const;
     void getEmbeddedProfileData (int& length, unsigned char*& pdata) const;
 
-    void setMetadata (const rtexif::TagDirectory* eroot);
-    void setMetadata (const rtexif::TagDirectory* eroot, const rtengine::procparams::ExifPairs& exif, const rtengine::procparams::IPTCPairs& iptcc);
+    void setMetadata(const MetadataInfo &info) { metadataInfo = info; }
     void setOutputProfile (const char* pdata, int plen);
 
+    bool saveMetadata(const Glib::ustring &fname) const;
+
     MyMutex& mutex ();
 };