classfactory.cpp
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/* akvirtualcamera, virtual camera for Mac and Windows.
* Copyright (C) 2020 Gonzalo Exequiel Pedone
*
* akvirtualcamera 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 3 of the License, or
* (at your option) any later version.
*
* akvirtualcamera 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 akvirtualcamera. If not, see <http://www.gnu.org/licenses/>.
*
* Web-Site: http://webcamoid.github.io/
*/
#include "classfactory.h"
#include "basefilter.h"
#include "persistpropertybag.h"
#include "PlatformUtils/src/utils.h"
#include "VCamUtils/src/utils.h"
namespace AkVCam
{
class ClassFactoryPrivate
{
public:
CLSID m_clsid;
static int m_locked;
};
int ClassFactoryPrivate::m_locked = 0;
}
AkVCam::ClassFactory::ClassFactory(const CLSID &clsid):
CUnknown(this, IID_IClassFactory)
{
this->d = new ClassFactoryPrivate;
this->d->m_clsid = clsid;
}
AkVCam::ClassFactory::~ClassFactory()
{
delete this->d;
}
bool AkVCam::ClassFactory::locked()
{
return ClassFactoryPrivate::m_locked > 0;
}
HRESULT AkVCam::ClassFactory::QueryInterface(const IID &riid, void **ppvObject)
{
AkLogFunction();
AkLogInfo() << "IID: " << AkVCam::stringFromClsid(riid) << std::endl;
if (!ppvObject)
return E_POINTER;
*ppvObject = nullptr;
if (IsEqualIID(riid, IID_IUnknown)
|| IsEqualIID(riid, IID_IClassFactory)) {
AkLogInterface(IClassFactory, this);
this->AddRef();
*ppvObject = this;
return S_OK;
} else if (IsEqualIID(riid, IID_IPersistPropertyBag)) {
auto persistPropertyBag = new PersistPropertyBag(this->d->m_clsid);
AkLogInterface(IPersistPropertyBag, persistPropertyBag);
persistPropertyBag->AddRef();
*ppvObject = persistPropertyBag;
return S_OK;
} else if (IsEqualIID(riid, IID_IBaseFilter)) {
auto baseFilter = BaseFilter::create(this->d->m_clsid);
AkLogInterface(IBaseFilter, baseFilter);
baseFilter->AddRef();
*ppvObject = baseFilter;
return S_OK;
}
return CUnknown::QueryInterface(riid, ppvObject);
}
HRESULT AkVCam::ClassFactory::CreateInstance(IUnknown *pUnkOuter,
const IID &riid,
void **ppvObject)
{
AkLogFunction();
AkLogInfo() << "Outer: " << ULONG_PTR(pUnkOuter) << std::endl;
AkLogInfo() << "IID: " << stringFromClsid(riid) << std::endl;
if (!ppvObject)
return E_INVALIDARG;
*ppvObject = nullptr;
if (pUnkOuter && !IsEqualIID(riid, IID_IUnknown))
return E_NOINTERFACE;
this->AddRef();
*ppvObject = this;
return S_OK;
}
HRESULT AkVCam::ClassFactory::LockServer(BOOL fLock)
{
AkLogFunction();
this->d->m_locked += fLock? 1: -1;
return S_OK;
}