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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtCore/qstring.h> |
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43 #include <QtCore/qdebug.h> |
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44 #include <QtCore/QFile> |
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45 |
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46 #include "dsserviceplugin.h" |
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47 |
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48 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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49 #include "dscameraservice.h" |
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50 #endif |
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51 |
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52 #ifdef QMEDIA_DIRECTSHOW_PLAYER |
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53 #include "directshowplayerservice.h" |
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54 #endif |
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55 |
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56 #include <qmediaserviceprovider.h> |
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57 |
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58 |
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59 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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60 #ifndef _STRSAFE_H_INCLUDED_ |
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61 #include <tchar.h> |
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62 #endif |
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63 #include <dshow.h> |
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64 #include <objbase.h> |
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65 #include <initguid.h> |
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66 #pragma comment(lib, "strmiids.lib") |
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67 #pragma comment(lib, "ole32.lib") |
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68 #include <windows.h> |
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69 #endif |
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70 |
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71 QStringList DSServicePlugin::keys() const |
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72 { |
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73 return QStringList() |
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74 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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75 << QLatin1String(Q_MEDIASERVICE_CAMERA) |
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76 #endif |
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77 #ifdef QMEDIA_DIRECTSHOW_PLAYER |
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78 << QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER) |
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79 #endif |
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80 ; |
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81 } |
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82 |
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83 QMediaService* DSServicePlugin::create(QString const& key) |
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84 { |
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85 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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86 if (key == QLatin1String(Q_MEDIASERVICE_CAMERA)) |
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87 return new DSCameraService; |
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88 #endif |
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89 #ifdef QMEDIA_DIRECTSHOW_PLAYER |
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90 if (key == QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER)) |
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91 return new DirectShowPlayerService; |
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92 #endif |
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93 |
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94 //qDebug() << "unsupported key:" << key; |
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95 return 0; |
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96 } |
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97 |
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98 void DSServicePlugin::release(QMediaService *service) |
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99 { |
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100 delete service; |
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101 } |
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102 |
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103 QList<QByteArray> DSServicePlugin::devices(const QByteArray &service) const |
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104 { |
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105 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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106 if (service == Q_MEDIASERVICE_CAMERA) { |
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107 if (m_cameraDevices.isEmpty()) |
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108 updateDevices(); |
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109 |
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110 return m_cameraDevices; |
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111 } |
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112 #endif |
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113 |
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114 return QList<QByteArray>(); |
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115 } |
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116 |
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117 QString DSServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device) |
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118 { |
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119 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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120 if (service == Q_MEDIASERVICE_CAMERA) { |
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121 if (m_cameraDevices.isEmpty()) |
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122 updateDevices(); |
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123 |
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124 for (int i=0; i<m_cameraDevices.count(); i++) |
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125 if (m_cameraDevices[i] == device) |
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126 return m_cameraDescriptions[i]; |
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127 } |
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128 #endif |
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129 return QString(); |
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130 } |
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131 |
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132 #ifdef QMEDIA_DIRECTSHOW_CAMERA |
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133 void DSServicePlugin::updateDevices() const |
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134 { |
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135 m_cameraDevices.clear(); |
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136 m_cameraDescriptions.clear(); |
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137 |
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138 CoInitialize(NULL); |
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139 ICreateDevEnum* pDevEnum = NULL; |
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140 IEnumMoniker* pEnum = NULL; |
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141 // Create the System device enumerator |
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142 HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, |
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143 CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, |
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144 reinterpret_cast<void**>(&pDevEnum)); |
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145 if(SUCCEEDED(hr)) { |
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146 // Create the enumerator for the video capture category |
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147 hr = pDevEnum->CreateClassEnumerator( |
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148 CLSID_VideoInputDeviceCategory, &pEnum, 0); |
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149 pEnum->Reset(); |
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150 // go through and find all video capture devices |
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151 IMoniker* pMoniker = NULL; |
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152 while(pEnum->Next(1, &pMoniker, NULL) == S_OK) { |
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153 IPropertyBag *pPropBag; |
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154 hr = pMoniker->BindToStorage(0,0,IID_IPropertyBag, |
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155 (void**)(&pPropBag)); |
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156 if(FAILED(hr)) { |
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157 pMoniker->Release(); |
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158 continue; // skip this one |
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159 } |
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160 // Find the description |
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161 WCHAR str[120]; |
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162 VARIANT varName; |
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163 varName.vt = VT_BSTR; |
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164 hr = pPropBag->Read(L"FriendlyName", &varName, 0); |
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165 if(SUCCEEDED(hr)) { |
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166 StringCchCopyW(str,sizeof(str)/sizeof(str[0]),varName.bstrVal); |
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167 QString temp(QString::fromUtf16((unsigned short*)str)); |
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168 m_cameraDevices.append(QString("ds:%1").arg(temp).toLocal8Bit().constData()); |
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169 hr = pPropBag->Read(L"Description", &varName, 0); |
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170 StringCchCopyW(str,sizeof(str)/sizeof(str[0]),varName.bstrVal); |
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171 QString temp2(QString::fromUtf16((unsigned short*)str)); |
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172 m_cameraDescriptions.append(temp2); |
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173 } |
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174 pPropBag->Release(); |
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175 pMoniker->Release(); |
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176 } |
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177 } |
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178 CoUninitialize(); |
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179 } |
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180 #endif |
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181 |
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182 Q_EXPORT_PLUGIN2(dsengine, DSServicePlugin); |
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183 |