C API: add ragephoto_clear()

src/RagePhoto.cpp

@@ -915,6 +915,12 @@ ragephoto_t ragephoto_open()
     return static_cast<ragephoto_t>(new RagePhoto);
 }
 
+void ragephoto_clear(ragephoto_t instance)
+{
+    RagePhoto *ragePhoto = static_cast<RagePhoto*>(instance);
+    ragePhoto->clear();
+}
+
 int ragephoto_load(ragephoto_t instance, const char *data, size_t size)
 {
     RagePhoto *ragePhoto = static_cast<RagePhoto*>(instance);

src/RagePhoto.h

@@ -193,6 +193,11 @@ typedef void* ragephoto_t;
 /** Opens a \p ragephoto_t instance. */
 LIBRAGEPHOTO_EXPORT ragephoto_t ragephoto_open();
 
+/** Resets the RagePhoto instance to default values.
+* \param instance \p ragephoto_t instance
+*/
+LIBRAGEPHOTO_EXPORT void ragephoto_clear(ragephoto_t instance);
+
 /** Loads a Photo from a const char*.
 * \param instance \p ragephoto_t instance
 * \param data Photo data

src/RagePhotoA.h

@@ -37,6 +37,9 @@ public:
     ~RagePhotoA() {
         ragephoto_close(instance);
     }
+    void clear() {
+        ragephoto_clear(instance);
+    }
     bool load(const char *data, size_t size) {
         return ragephoto_load(instance, data, size);
     }