Move enum EndType to IService

src/Backend/IProducer.h

@@ -44,11 +44,6 @@ namespace Backend
     class IProducer : virtual public IService
     {
     public:
-        enum EndType
-        {
-            EndOfMedia = -1,
-            EndOfParent = -2
-        };
 
         virtual ~IProducer() = default;
         virtual void            setCallback( IProducerEventCb* callback ) = 0;

src/Backend/IService.h

@@ -45,6 +45,12 @@ namespace Backend
     class IService
     {
     public:
+        enum EndType
+        {
+            EndOfMedia = -1,
+            EndOfParent = -2
+        };
+
         virtual ~IService() = default;
 
         virtual std::string     identifier() const = 0;