mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-28 22:36:05 +00:00
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
#pragma once
|
|
#ifndef NULLSOFT_UTILITY_SINGLETON_H
|
|
#define NULLSOFT_UTILITY_SINGLETON_H
|
|
|
|
#include <api/service/waservicefactoryi.h>
|
|
#include <api/service/services.h>
|
|
|
|
/*
|
|
====== Usage ======
|
|
disp_t: your Dispatchable base class
|
|
implt_t: your implementation class
|
|
|
|
SingletonServiceFactory<disp_t, impl_t> myFactory;
|
|
impl_t myImplementation;
|
|
|
|
//....
|
|
|
|
//during service registration
|
|
myFactory.Register(WASABI_API_SVC, &myImplementation);
|
|
|
|
//during service deregistration
|
|
myFactory.Deregister(WASABI_API_SVC, &myImplementation);
|
|
|
|
==== Class requirements ====
|
|
your base or implementation class requires the following three static methods
|
|
static FOURCC getServiceType(); // return your type (e.g. WaSvc::UNIQUE)... might already be defined in the dispatchable base class
|
|
static const char *getServiceName(); // return your service name
|
|
static GUID getServiceGuid(); // return your service GUID
|
|
*/
|
|
|
|
template <class disp_t, class impl_t>
|
|
class SingletonServiceFactory : public waServiceFactory
|
|
{
|
|
public:
|
|
SingletonServiceFactory() : impl(0)
|
|
{
|
|
}
|
|
|
|
~SingletonServiceFactory()
|
|
{
|
|
}
|
|
|
|
void Register(api_service *serviceManager, impl_t *new_impl)
|
|
{
|
|
impl=new_impl;
|
|
serviceManager->service_register(this);
|
|
}
|
|
|
|
void Deregister(api_service *serviceManager)
|
|
{
|
|
if (impl)
|
|
{
|
|
serviceManager->service_deregister(this);
|
|
impl=0;
|
|
}
|
|
}
|
|
|
|
private:
|
|
FOURCC svc_serviceType() { return impl_t::getServiceType(); }
|
|
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<disp_t *>(impl); }
|
|
int svc_supportNonLockingGetInterface() { return 1; }
|
|
int svc_releaseInterface(void *ifc) { return 0; }
|
|
const wchar_t *svc_getTestString() { return 0; }
|
|
int svc_notify(int msg, int param1 = 0, int param2 = 0) { return 0; }
|
|
|
|
private:
|
|
impl_t *impl;
|
|
|
|
protected:
|
|
#define CBCLASS SingletonServiceFactory<disp_t, impl_t>
|
|
START_DISPATCH_INLINE;
|
|
CB(WASERVICEFACTORY_GETSERVICETYPE, svc_serviceType);
|
|
CB(WASERVICEFACTORY_GETSERVICENAME, svc_getServiceName);
|
|
CB(WASERVICEFACTORY_GETGUID, svc_getGuid);
|
|
CB(WASERVICEFACTORY_GETINTERFACE, svc_getInterface);
|
|
CB(WASERVICEFACTORY_SUPPORTNONLOCKINGGETINTERFACE, svc_supportNonLockingGetInterface);
|
|
CB(WASERVICEFACTORY_RELEASEINTERFACE, svc_releaseInterface);
|
|
CB(WASERVICEFACTORY_GETTESTSTRING, svc_getTestString);
|
|
CB(WASERVICEFACTORY_SERVICENOTIFY, svc_notify);
|
|
END_DISPATCH;
|
|
#undef CBCLASS
|
|
};
|
|
|
|
#endif |