reactos/dll/directx/dsound_new/classfactory.c

145 lines
2.9 KiB
C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Configuration of network devices
* FILE: dll/directx/dsound_new/classfactory.c
* PURPOSE: IClassFactory implementation
*
* PROGRAMMERS: Johannes Anderwald (johannes.anderwald@reactos.org)
*/
#include "precomp.h"
typedef struct
{
const IClassFactoryVtbl *lpVtbl;
LONG ref;
CLSID *rclsid;
LPFNCREATEINSTANCE lpfnCI;
const IID * riidInst;
} IClassFactoryImpl;
static
HRESULT
WINAPI
IClassFactory_fnQueryInterface(
LPCLASSFACTORY iface,
REFIID riid,
LPVOID *ppvObj)
{
IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
*ppvObj = NULL;
/* check requested interface */
if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory))
{
*ppvObj = This;
InterlockedIncrement(&This->ref);
return S_OK;
}
return E_NOINTERFACE;
}
static
ULONG
WINAPI
IClassFactory_fnAddRef(
LPCLASSFACTORY iface)
{
IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
/* increment reference count */
ULONG refCount = InterlockedIncrement(&This->ref);
return refCount;
}
static
ULONG
WINAPI
IClassFactory_fnRelease(
LPCLASSFACTORY iface)
{
IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
ULONG refCount = InterlockedDecrement(&This->ref);
/* decrement reference count */
if (!refCount)
{
/* free class factory */
CoTaskMemFree(This);
return 0;
}
return refCount;
}
static
HRESULT
WINAPI
IClassFactory_fnCreateInstance(
LPCLASSFACTORY iface,
LPUNKNOWN pUnkOuter,
REFIID riid,
LPVOID *ppvObject)
{
IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
if (!ppvObject)
return E_INVALIDARG;
*ppvObject = NULL;
if ( This->riidInst==NULL || IsEqualCLSID(riid, This->riidInst) || IsEqualCLSID(riid, &IID_IUnknown) )
{
/* instantiate object */
return This->lpfnCI(pUnkOuter, riid, ppvObject);
}
return E_NOINTERFACE;
}
static
HRESULT
WINAPI IClassFactory_fnLockServer(
LPCLASSFACTORY iface,
BOOL fLock)
{
//IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
return E_NOTIMPL;
}
static const IClassFactoryVtbl dclfvt =
{
IClassFactory_fnQueryInterface,
IClassFactory_fnAddRef,
IClassFactory_fnRelease,
IClassFactory_fnCreateInstance,
IClassFactory_fnLockServer
};
IClassFactory *
IClassFactory_fnConstructor(
LPFNCREATEINSTANCE lpfnCI,
PLONG pcRefDll,
REFIID riidInst)
{
IClassFactoryImpl* lpclf;
lpclf = CoTaskMemAlloc(sizeof(IClassFactoryImpl));
lpclf->ref = 1;
lpclf->lpVtbl = &dclfvt;
lpclf->lpfnCI = lpfnCI;
if (pcRefDll)
InterlockedIncrement(pcRefDll);
lpclf->riidInst = riidInst;
return (LPCLASSFACTORY)lpclf;
}