ClassFactory.cpp

@@ -0,0 +1,84 @@
+/*
+	This file is part of EqualizerAPO, a system-wide equalizer.
+	Copyright (C) 2012  Jonas Thedering
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License along
+	with this program; if not, write to the Free Software Foundation, Inc.,
+	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "EqualizerAPO.h"
+#include "LogHelper.h"
+#include "ClassFactory.h"
+
+long ClassFactory::lockCount = 0;
+
+ClassFactory::ClassFactory()
+{
+	refCount = 1;
+}
+
+HRESULT __stdcall ClassFactory::QueryInterface(const IID& iid, void** ppv)
+{
+	if(iid == __uuidof(IUnknown) || iid == __uuidof(IClassFactory))
+		*ppv = static_cast<IClassFactory*>(this);
+	else
+	{
+		*ppv = NULL;
+		return E_NOINTERFACE;
+	}
+
+	reinterpret_cast<IUnknown*>(*ppv)->AddRef();
+	return S_OK;
+}
+
+ULONG __stdcall ClassFactory::AddRef()
+{
+	return InterlockedIncrement(&refCount);
+}
+
+ULONG __stdcall ClassFactory::Release()
+{
+	if(InterlockedDecrement(&refCount) == 0)
+	{
+		delete this;
+		return 0;
+	}
+
+	return refCount;
+}
+
+HRESULT __stdcall ClassFactory::CreateInstance(IUnknown* pUnknownOuter, const IID& iid, void** ppv)
+{
+	if(pUnknownOuter != NULL && iid != __uuidof(IUnknown))
+		return E_NOINTERFACE;
+
+	EqualizerAPO* apo = new EqualizerAPO(pUnknownOuter);
+	if(apo == NULL)
+		return E_OUTOFMEMORY;
+
+	HRESULT hr = apo->NonDelegatingQueryInterface(iid, ppv);
+
+	apo->NonDelegatingRelease();
+	return hr;
+}
+
+HRESULT __stdcall ClassFactory::LockServer(BOOL bLock)
+{
+	if(bLock)
+		InterlockedIncrement(&lockCount);
+	else
+		InterlockedDecrement(&lockCount);
+
+	return S_OK;
+}