winamp/Src/Plugins/Input/in_mp3/FactoryHelper.h

#include "api__in_mp3.h"
#include <api/service/waservicefactory.h>

template <class api_T>
void ServiceBuild(api_T *&api_t, GUID factoryGUID_t)
{
	if (mod.service)
	{
		waServiceFactory *factory = mod.service->service_getServiceByGuid(factoryGUID_t);
		if (factory)
			api_t = reinterpret_cast<api_T *>( factory->getInterface() );
	}
}

template <class api_T>
void ServiceRelease(api_T *api_t, GUID factoryGUID_t)
{
	if (mod.service && api_t)
	{
		waServiceFactory *factory = mod.service->service_getServiceByGuid(factoryGUID_t);
		if (factory)
			factory->releaseInterface(api_t);
	}
	api_t = NULL;
}