Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 138 insertions, 0 deletions

diff --git a/Src/Winamp/Singleton.h b/Src/Winamp/Singleton.h
new file mode 100644
index 00000000..ff7cd560
--- /dev/null
+++ b/Src/Winamp/Singleton.h
@@ -0,0 +1,138 @@
+#ifndef __WASABI_SINGLETON_H
+#define __WASABI_SINGLETON_H
+
+#include "api/service/waservicefactoryi.h"
+#include "api/service/services.h"
+
+template <class api_t, class impl_t>
+class Singleton : public waServiceFactoryI
+{
+public:
+	Singleton() : impl( 0 ), orig( 0 )                                   {}
+
+	Singleton( impl_t *new_impl, bool existing ) : impl( 0 ), orig( 0 )
+	{
+		if ( existing )
+			Register( new_impl );
+		else
+			RegisterNew( new_impl );
+	}
+
+	Singleton( impl_t *&new_impl ) : impl( 0 ), orig( 0 )                { RegisterNew( new_impl ); }
+
+	~Singleton()                                                         { Deregister(); }
+
+	void Register( impl_t *new_impl )
+	{
+		impl = new_impl;
+		WASABI_API_SVC->service_register( this );
+	}
+
+	void RegisterNew( impl_t *&new_impl )
+	{
+		if ( !new_impl )
+		{
+			orig     = &new_impl;
+			new_impl = new impl_t;
+		}
+
+		impl = new_impl;
+		WASABI_API_SVC->service_register( this );
+	}
+
+	void Deregister()
+	{
+		if ( impl )
+		{
+			WASABI_API_SVC->service_deregister( this );
+			if ( orig )
+			{
+				delete impl;
+				*orig = 0;
+			}
+
+			impl = 0;
+		}
+	}
+
+	impl_t *impl;
+	impl_t **orig;
+
+	FOURCC         svc_serviceType()                                     { return WaSvc::UNIQUE; }                 // TODO: make this a (defaulted) template parameter
+	const char    *svc_getServiceName()                                  { return impl_t::getServiceName(); }
+	GUID           svc_getGuid()                                         { return impl_t::getServiceGuid(); }      // GUID per service factory, can be INVALID_GUID
+	void          *svc_getInterface( int global_lock = TRUE )            { return static_cast<api_t *>( impl ); }
+	int            svc_supportNonLockingGetInterface()                   { return TRUE; }
+	int            svc_releaseInterface( void *ifc )                     { return 0; }
+	CfgItem       *svc_getCfgInterface()                                 { return NULL; }
+	const wchar_t *svc_getTestString()                                   { return 0; }
+	int            svc_notify( int msg, int param1 = 0, int param2 = 0 ) { return 0; }
+};
+
+
+template <class api_t, class impl_t>
+class Singleton2 : public waServiceFactoryI
+{
+public:
+	Singleton2() : impl( 0 ), orig( 0 )                                  {}
+
+	Singleton2( impl_t *new_impl, bool existing ) : impl( 0 ), orig( 0 )
+	{
+		if ( existing )
+			Register( new_impl );
+		else
+			RegisterNew( new_impl );
+	}
+
+	Singleton2( impl_t *&new_impl ) : impl( 0 ), orig( 0 )               { RegisterNew( new_impl ); }
+
+	~Singleton2()                                                        { Deregister(); }
+
+	void Register( impl_t *new_impl )
+	{
+		impl = new_impl;
+		WASABI_API_SVC->service_register( this );
+	}
+
+	void RegisterNew( impl_t *&new_impl )
+	{
+		if ( !new_impl )
+		{
+			orig     = &new_impl;
+			new_impl = new impl_t;
+		}
+
+		impl = new_impl;
+		WASABI_API_SVC->service_register( this );
+	}
+
+	void Deregister()
+	{
+		if ( impl )
+		{
+			WASABI_API_SVC->service_deregister( this );
+			if ( orig )
+			{
+				delete impl;
+				*orig = 0;
+			}
+
+			impl = 0;
+		}
+	}
+
+	impl_t *impl;
+	impl_t **orig;
+
+	FOURCC         svc_serviceType()                                     { return WaSvc::UNIQUE; }                 // TODO: make this a (defaulted) template parameter
+	const char    *svc_getServiceName()                                  { return impl_t::getServiceName(); }
+	GUID           svc_getGuid()                                         { return impl_t::getServiceGuid(); }      // GUID per service factory, can be INVALID_GUID
+	void          *svc_getInterface( int global_lock = TRUE )            { return static_cast<api_t *>( impl ); }
+	int            svc_supportNonLockingGetInterface()                   { return TRUE; }
+	int            svc_releaseInterface( void *ifc )                     { return 0; }
+	CfgItem       *svc_getCfgInterface()                                 { return NULL; }
+	const wchar_t *svc_getTestString()                                   { return 0; }
+	int            svc_notify( int msg, int param1 = 0, int param2 = 0 ) { return 0; }
+};
+
+#endif
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