1 files changed, 59 insertions, 0 deletions
diff --git a/src/libw32dll/DirectShow/iunk.h b/src/libw32dll/DirectShow/iunk.h
new file mode 100644
index 000000000..2c672b374
--- /dev/null
+++ b/src/libw32dll/DirectShow/iunk.h
@@ -0,0 +1,59 @@
+#ifndef DS_IUNK_H
+#define DS_IUNK_H
+
+#include "guids.h"
+
+#define DECLARE_IUNKNOWN(CLASSNAME) \
+    long STDCALL (*QueryInterface)(IUnknown * This, GUID* riid, void **ppvObject); \
+    long STDCALL (*AddRef) (IUnknown * This); \
+    long STDCALL (*Release) (IUnknown * This); \
+    int refcount; 
+
+#define INHERIT_IUNKNOWN() \
+    long STDCALL (*QueryInterface)(IUnknown * This, GUID* riid, void **ppvObject); \
+    long STDCALL (*AddRef) (IUnknown * This); \
+    long STDCALL (*Release) (IUnknown * This); 
+        
+#define IMPLEMENT_IUNKNOWN(CLASSNAME) 		\
+long STDCALL CLASSNAME ## _QueryInterface(IUnknown * This, GUID* riid, void **ppvObject); \
+long STDCALL CLASSNAME ## _AddRef ( 		\
+    IUnknown * This); 				\
+long STDCALL CLASSNAME ## _Release ( 		\
+    IUnknown * This); 				\
+long STDCALL CLASSNAME ## _QueryInterface(IUnknown * This, GUID* riid, void **ppvObject) \
+{ \
+    CLASSNAME * me = (CLASSNAME *)This;		\
+    GUID* r; unsigned int i = 0;				\
+    Debug printf(#CLASSNAME "_QueryInterface() called\n");\
+    if (!ppvObject) return 0x80004003; 		\
+    for(r=me->interfaces; i<sizeof(me->interfaces)/sizeof(me->interfaces[0]); r++, i++) \
+	if(!memcmp(r, riid, 16)) 		\
+	{ 					\
+	    me->vt->AddRef((IUnknown*)This); 	\
+	    *ppvObject=This; 			\
+	    return 0; 				\
+	} 					\
+    Debug printf("Failed\n");			\
+    return E_NOINTERFACE;			\
+} 						\
+						\
+long STDCALL CLASSNAME ## _AddRef ( 		\
+    IUnknown * This) 				\
+{						\
+    CLASSNAME * me=( CLASSNAME *)This;		\
+    Debug printf(#CLASSNAME "_AddRef() called\n"); \
+    return ++(me->refcount); 			\
+}     						\
+						\
+long STDCALL CLASSNAME ## _Release ( 		\
+    IUnknown * This) 				\
+{ 						\
+    CLASSNAME* me=( CLASSNAME *)This;	 	\
+    Debug printf(#CLASSNAME "_Release() called\n"); \
+    if(--(me->refcount) ==0)			\
+		CLASSNAME ## _Destroy(me); 	\
+    return 0; 					\
+}
+
+
+#endif /* DS_IUNK_H */