mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-18 13:45:55 +01:00
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
#include "LazyServiceFactory.h"
|
|
#include "w5s.h"
|
|
#include "api.h"
|
|
#include <strsafe.h>
|
|
/*
|
|
various implementation notes:
|
|
1) register for service notifications after registering service, so we can know if our service got loaded indirectly
|
|
*/
|
|
|
|
LazyServiceFactory::LazyServiceFactory(FOURCC _service_type, GUID _service_guid, char *_service_name, char *_service_test_string, const wchar_t *_service_filename)
|
|
{
|
|
service_type=_service_type;
|
|
service_guid=_service_guid;
|
|
service_name=_service_name;
|
|
service_test_string = _service_test_string;
|
|
StringCbCopyW(service_filename, sizeof(service_filename), _service_filename);
|
|
}
|
|
|
|
LazyServiceFactory::~LazyServiceFactory()
|
|
{
|
|
WASABI_API_SVC->service_deregister(this);
|
|
free(service_name);
|
|
free(service_test_string);
|
|
}
|
|
|
|
FOURCC LazyServiceFactory::GetServiceType()
|
|
{
|
|
return service_type;
|
|
}
|
|
|
|
const char *LazyServiceFactory::GetServiceName()
|
|
{
|
|
return service_name;
|
|
}
|
|
|
|
GUID LazyServiceFactory::GetGUID()
|
|
{
|
|
return service_guid;
|
|
}
|
|
|
|
void *LazyServiceFactory::GetInterface(int global_lock)
|
|
{
|
|
//load target W5S
|
|
w5s_load(service_filename);
|
|
// ask the service manager remove our service factory and put the new one in our old place (to keep enumeration valid)
|
|
WASABI_API_SVC->service_compactDuplicates(this);
|
|
|
|
// call the service manager to get the "real" service which should now (hopefully) be loaded
|
|
waServiceFactory *sf = WASABI_API_SVC->service_getServiceByGuid(service_guid);
|
|
if (sf && sf != this)
|
|
return sf->getInterface();
|
|
return 0;
|
|
}
|
|
|
|
int LazyServiceFactory::SupportNonLockingInterface()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int LazyServiceFactory::ReleaseInterface(void *ifc)
|
|
{
|
|
// someone may have held on to our service factory when they loaded the service
|
|
// so they call us instead of the real service factory
|
|
// so go grab the 'real' service and release through that
|
|
waServiceFactory *sf = WASABI_API_SVC->service_getServiceByGuid(service_guid);
|
|
if (sf && sf != this) // make sure we didn't just grab ourselves :)
|
|
{
|
|
return sf->releaseInterface(ifc);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const char *LazyServiceFactory::GetTestString()
|
|
{
|
|
return service_test_string;
|
|
}
|
|
|
|
int LazyServiceFactory::ServiceNotify(int msg, intptr_t param1, intptr_t param2)
|
|
{
|
|
switch (msg)
|
|
{
|
|
case SvcNotify::ONDEREGISTERED:
|
|
WASABI_API_SYSCB->syscb_deregisterCallback(this);
|
|
break;
|
|
case SvcNotify::ONREGISTERED:
|
|
WASABI_API_SYSCB->syscb_registerCallback(this);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int LazyServiceFactory::Notify(int msg, intptr_t param1, intptr_t param2)
|
|
{
|
|
switch (msg)
|
|
{
|
|
case SvcCallback::ONREGISTER:
|
|
{
|
|
waServiceFactory *sf = reinterpret_cast<waServiceFactory*>(param2);
|
|
GUID serviceGUID = sf->getGuid();
|
|
if (sf != this && serviceGUID != INVALID_GUID && serviceGUID == service_guid)
|
|
{
|
|
// real service got loaded, so unregister ourselves
|
|
WASABI_API_SVC->service_compactDuplicates(this);
|
|
}
|
|
}
|
|
break;
|
|
default: return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#define CBCLASS LazyServiceFactory
|
|
START_MULTIPATCH;
|
|
START_PATCH(ServiceFactoryPatch)
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_GETSERVICETYPE, GetServiceType);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_GETSERVICENAME, GetServiceName);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_GETGUID, GetGUID);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_GETINTERFACE, GetInterface);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_SUPPORTNONLOCKINGGETINTERFACE, SupportNonLockingInterface) ;
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_RELEASEINTERFACE, ReleaseInterface);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_GETTESTSTRING, GetTestString);
|
|
M_CB(ServiceFactoryPatch, waServiceFactory, WASERVICEFACTORY_SERVICENOTIFY, ServiceNotify);
|
|
NEXT_PATCH(SysCallbackPatch)
|
|
M_CB(SysCallbackPatch, SysCallback, SYSCALLBACK_GETEVENTTYPE, GetEventType);
|
|
M_CB(SysCallbackPatch, SysCallback, SYSCALLBACK_NOTIFY, Notify);
|
|
END_PATCH
|
|
END_MULTIPATCH;
|
|
#undef CBCLASS |