diff options
Diffstat (limited to 'src/plugins/mediaservices/directshow/dsserviceplugin.cpp')
| -rw-r--r-- | src/plugins/mediaservices/directshow/dsserviceplugin.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/plugins/mediaservices/directshow/dsserviceplugin.cpp b/src/plugins/mediaservices/directshow/dsserviceplugin.cpp new file mode 100644 index 0000000..f3ab889 --- /dev/null +++ b/src/plugins/mediaservices/directshow/dsserviceplugin.cpp @@ -0,0 +1,188 @@ +/**************************************************************************** +** +** 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); + |