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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qstring.h>
#include <QtCore/qdebug.h>
#include <QtCore/QFile>
#include "dsserviceplugin.h"
#ifdef QMEDIA_DIRECTSHOW_CAMERA
#include "dscameraservice.h"
#endif
#ifdef QMEDIA_DIRECTSHOW_PLAYER
#include "directshowplayerservice.h"
#endif
#include <qmediaserviceprovider.h>
#ifdef QMEDIA_DIRECTSHOW_CAMERA
#ifndef _STRSAFE_H_INCLUDED_
#include <tchar.h>
#endif
#include <dshow.h>
#include <objbase.h>
#include <initguid.h>
#pragma comment(lib, "strmiids.lib")
#pragma comment(lib, "ole32.lib")
#include <windows.h>
#endif
QT_BEGIN_NAMESPACE
QStringList DSServicePlugin::keys() const
{
return QStringList()
#ifdef QMEDIA_DIRECTSHOW_CAMERA
<< QLatin1String(Q_MEDIASERVICE_CAMERA)
#endif
#ifdef QMEDIA_DIRECTSHOW_PLAYER
<< QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER)
#endif
;
}
QMediaService* DSServicePlugin::create(QString const& key)
{
#ifdef QMEDIA_DIRECTSHOW_CAMERA
if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
return new DSCameraService;
#endif
#ifdef QMEDIA_DIRECTSHOW_PLAYER
if (key == QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER))
return new DirectShowPlayerService;
#endif
qDebug() << "unsupported key:" << key;
return 0;
}
void DSServicePlugin::release(QMediaService *service)
{
delete service;
}
QList<QByteArray> DSServicePlugin::devices(const QByteArray &service) const
{
#ifdef QMEDIA_DIRECTSHOW_CAMERA
if (service == Q_MEDIASERVICE_CAMERA) {
if (m_cameraDevices.isEmpty())
updateDevices();
return m_cameraDevices;
}
#endif
return QList<QByteArray>();
}
QString DSServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
{
#ifdef QMEDIA_DIRECTSHOW_CAMERA
if (service == Q_MEDIASERVICE_CAMERA) {
if (m_cameraDevices.isEmpty())
updateDevices();
for (int i=0; i<m_cameraDevices.count(); i++)
if (m_cameraDevices[i] == device)
return m_cameraDescriptions[i];
}
#endif
return QString();
}
#ifdef QMEDIA_DIRECTSHOW_CAMERA
void DSServicePlugin::updateDevices() const
{
m_cameraDevices.clear();
m_cameraDescriptions.clear();
CoInitialize(NULL);
ICreateDevEnum* pDevEnum = NULL;
IEnumMoniker* pEnum = NULL;
// Create the System device enumerator
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
reinterpret_cast<void**>(&pDevEnum));
if(SUCCEEDED(hr)) {
// Create the enumerator for the video capture category
hr = pDevEnum->CreateClassEnumerator(
CLSID_VideoInputDeviceCategory, &pEnum, 0);
pEnum->Reset();
// go through and find all video capture devices
IMoniker* pMoniker = NULL;
while(pEnum->Next(1, &pMoniker, NULL) == S_OK) {
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0,0,IID_IPropertyBag,
(void**)(&pPropBag));
if(FAILED(hr)) {
pMoniker->Release();
continue; // skip this one
}
// Find the description
WCHAR str[120];
VARIANT varName;
varName.vt = VT_BSTR;
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if(SUCCEEDED(hr)) {
StringCchCopyW(str,sizeof(str)/sizeof(str[0]),varName.bstrVal);
QString temp(QString::fromUtf16((unsigned short*)str));
m_cameraDevices.append(QString("ds:%1").arg(temp).toLocal8Bit().constData());
hr = pPropBag->Read(L"Description", &varName, 0);
StringCchCopyW(str,sizeof(str)/sizeof(str[0]),varName.bstrVal);
QString temp2(QString::fromUtf16((unsigned short*)str));
m_cameraDescriptions.append(temp2);
}
pPropBag->Release();
pMoniker->Release();
}
}
CoUninitialize();
}
#endif
QT_END_NAMESPACE
Q_EXPORT_PLUGIN2(dsengine, DSServicePlugin);
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