修改audio模块

1 files changed, 6 insertions, 2 deletions

diff --git a/src/libjin/common/subsystem.h b/src/libjin/common/subsystem.h
index ad28061..ca4b33d 100644
--- a/src/libjin/common/subsystem.h
+++ b/src/libjin/common/subsystem.h
@@ -10,6 +10,7 @@ namespace common
     
     class Subsystem 
     {
+
     public:
 
         struct Setting {};
@@ -20,11 +21,14 @@ namespace common
 
         virtual void quit() = 0;
 
-    private:
+    protected:
 
-        virtual onlyonce bool _init(const Setting* setting) = 0;
+        Subsystem() {}; 
+        virtual ~Subsystem() {};
 
+        virtual onlyonce bool _init(const Setting* setting) = 0;
         virtual onlyonce void _quit() = 0;
+
     };
 
 }