Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
211
src/plugins/directshow/dsserviceplugin.cpp
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211
src/plugins/directshow/dsserviceplugin.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qstring.h>
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#include <QtCore/qdebug.h>
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#include <QtCore/QFile>
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#include "dsserviceplugin.h"
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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#include "dscameraservice.h"
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#endif
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#ifdef QMEDIA_DIRECTSHOW_PLAYER
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#include "directshowplayerservice.h"
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#endif
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#include <qmediaserviceprovider.h>
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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extern const CLSID CLSID_VideoInputDeviceCategory;
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#ifndef _STRSAFE_H_INCLUDED_
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#include <tchar.h>
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#endif
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#include <dshow.h>
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#include <objbase.h>
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#include <initguid.h>
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#pragma comment(lib, "strmiids.lib")
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#pragma comment(lib, "ole32.lib")
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#include <windows.h>
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#include <ocidl.h>
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#endif
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QT_USE_NAMESPACE
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QStringList DSServicePlugin::keys() const
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{
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return QStringList()
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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<< QLatin1String(Q_MEDIASERVICE_CAMERA)
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#endif
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#ifdef QMEDIA_DIRECTSHOW_PLAYER
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<< QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER)
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#endif
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;
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}
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QMediaService* DSServicePlugin::create(QString const& key)
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{
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
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return new DSCameraService;
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#endif
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#ifdef QMEDIA_DIRECTSHOW_PLAYER
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if (key == QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER))
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return new DirectShowPlayerService;
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#endif
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qDebug() << "unsupported key:" << key;
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return 0;
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}
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void DSServicePlugin::release(QMediaService *service)
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{
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delete service;
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}
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QMediaServiceProviderHint::Features DSServicePlugin::supportedFeatures(
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const QByteArray &service) const
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{
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if (service == Q_MEDIASERVICE_MEDIAPLAYER)
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return QMediaServiceProviderHint::StreamPlayback | QMediaServiceProviderHint::VideoSurface;
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else
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return QMediaServiceProviderHint::Features();
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}
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QList<QByteArray> DSServicePlugin::devices(const QByteArray &service) const
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{
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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if (service == Q_MEDIASERVICE_CAMERA) {
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if (m_cameraDevices.isEmpty())
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updateDevices();
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return m_cameraDevices;
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}
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#endif
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return QList<QByteArray>();
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}
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QString DSServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
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{
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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if (service == Q_MEDIASERVICE_CAMERA) {
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if (m_cameraDevices.isEmpty())
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updateDevices();
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for (int i=0; i<m_cameraDevices.count(); i++)
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if (m_cameraDevices[i] == device)
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return m_cameraDescriptions[i];
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}
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#endif
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return QString();
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}
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#ifdef QMEDIA_DIRECTSHOW_CAMERA
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void DSServicePlugin::updateDevices() const
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{
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m_cameraDevices.clear();
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m_cameraDescriptions.clear();
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BOOL bFound = TRUE;
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CoInitialize(NULL);
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ICreateDevEnum* pDevEnum = NULL;
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IEnumMoniker* pEnum = NULL;
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// Create the System device enumerator
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HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
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CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
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reinterpret_cast<void**>(&pDevEnum));
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if(SUCCEEDED(hr)) {
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// Create the enumerator for the video capture category
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hr = pDevEnum->CreateClassEnumerator(
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CLSID_VideoInputDeviceCategory, &pEnum, 0);
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if (S_OK == hr) {
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pEnum->Reset();
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// go through and find all video capture devices
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IMoniker* pMoniker = NULL;
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while(pEnum->Next(1, &pMoniker, NULL) == S_OK) {
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IPropertyBag *pPropBag;
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hr = pMoniker->BindToStorage(0,0,IID_IPropertyBag,
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(void**)(&pPropBag));
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if(FAILED(hr)) {
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pMoniker->Release();
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continue; // skip this one
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}
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bFound = TRUE;
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// Find the description
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WCHAR str[120];
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VARIANT varName;
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varName.vt = VT_BSTR;
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hr = pPropBag->Read(L"FriendlyName", &varName, 0);
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if(SUCCEEDED(hr)) {
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wcsncpy(str, varName.bstrVal, sizeof(str)/sizeof(str[0]));
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QString temp(QString::fromUtf16((unsigned short*)str));
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m_cameraDevices.append(QString("ds:%1").arg(temp).toLocal8Bit().constData());
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hr = pPropBag->Read(L"Description", &varName, 0);
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wcsncpy(str, varName.bstrVal, sizeof(str)/sizeof(str[0]));
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QString temp2(QString::fromUtf16((unsigned short*)str));
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m_cameraDescriptions.append(temp2);
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} else {
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qWarning() << "No friendly name";
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}
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pPropBag->Release();
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pMoniker->Release();
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}
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pEnum->Release();
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}
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pDevEnum->Release();
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}
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CoUninitialize();
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if (!bFound) {
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qWarning() << "No camera devices found";
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}
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}
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#endif
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Q_EXPORT_PLUGIN2(qtmedia_dsengine, DSServicePlugin);
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