+               /** Enum for possible Class, Subclass and Protocol values of device and interface descriptors relating to the
+                *  Still Image device class.
+                */
+               enum SI_Descriptor_ClassSubclassProtocol_t
+               {
+                       SI_CSCP_StillImageClass             = 0x06, /**< Descriptor Class value indicating that the device or interface
+                                                                    *   belongs to the Still Image class.
+                                                                    */
+                       SI_CSCP_StillImageSubclass          = 0x01, /**< Descriptor Subclass value indicating that the device or interface
+                                                                    *   belongs to the Still Image subclass.
+                                                                    */
+                       SI_CSCP_BulkOnlyProtocol            = 0x01, /**< Descriptor Protocol value indicating that the device or interface
+                                                                    *   belongs to the Bulk Only Transport protocol of the Still Image class.
+                                                                    */
+               };
+