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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the Qt Mobility Components.

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include "qgstreamervideoinputdevicecontrol.h"

    43 

    44 #include <QtGui/QIcon>

    45 #include <QtCore/QDir>

    46 #include <QtCore/QDebug>

    47 

    48 #include <linux/types.h>

    49 #include <sys/time.h>

    50 #include <sys/ioctl.h>

    51 #include <sys/poll.h>

    52 #include <unistd.h>

    53 #include <fcntl.h>

    54 #include <errno.h>

    55 #include <string.h>

    56 #include <stdlib.h>

    57 #include <sys/mman.h>

    58 #include <linux/videodev2.h>

    59 

    60 QGstreamerVideoInputDeviceControl::QGstreamerVideoInputDeviceControl(QObject *parent)

    61     :QVideoDeviceControl(parent), m_selectedDevice(0)

    62 {

    63     update();

    64 }

    65 

    66 QGstreamerVideoInputDeviceControl::~QGstreamerVideoInputDeviceControl()

    67 {

    68 }

    69 

    70 int QGstreamerVideoInputDeviceControl::deviceCount() const

    71 {

    72     return m_names.size();

    73 }

    74 

    75 QString QGstreamerVideoInputDeviceControl::deviceName(int index) const

    76 {

    77     return m_names[index];

    78 }

    79 

    80 QString QGstreamerVideoInputDeviceControl::deviceDescription(int index) const

    81 {

    82     return m_descriptions[index];

    83 }

    84 

    85 QIcon QGstreamerVideoInputDeviceControl::deviceIcon(int index) const

    86 {

    87     Q_UNUSED(index);

    88     return QIcon();

    89 }

    90 

    91 int QGstreamerVideoInputDeviceControl::defaultDevice() const

    92 {

    93     return 0;

    94 }

    95 

    96 int QGstreamerVideoInputDeviceControl::selectedDevice() const

    97 {

    98     return m_selectedDevice;

    99 }

   100 

   101 

   102 void QGstreamerVideoInputDeviceControl::setSelectedDevice(int index)

   103 {

   104     if (index != m_selectedDevice) {

   105         m_selectedDevice = index;

   106         emit selectedDeviceChanged(index);

   107         emit selectedDeviceChanged(deviceName(index));

   108     }

   109 }

   110 

   111 

   112 void QGstreamerVideoInputDeviceControl::update()

   113 {

   114     m_names.clear();

   115     m_descriptions.clear();

   116 

   117     QDir devDir("/dev");

   118     devDir.setFilter(QDir::System);

   119 

   120     QFileInfoList entries = devDir.entryInfoList(QStringList() << "video*");

   121 

   122     foreach( const QFileInfo &entryInfo, entries ) {

   123         //qDebug() << "Try" << entryInfo.filePath();

   124 

   125         int fd = ::open(entryInfo.filePath().toLatin1().constData(), O_RDWR );

   126         if (fd == -1)

   127             continue;

   128 

   129         bool isCamera = false;

   130 

   131         v4l2_input input;

   132         memset(&input, 0, sizeof(input));

   133         for (; ::ioctl(fd, VIDIOC_ENUMINPUT, &input) >= 0; ++input.index) {

   134             if(input.type == V4L2_INPUT_TYPE_CAMERA || input.type == 0) {

   135                 isCamera = ::ioctl(fd, VIDIOC_S_INPUT, input.index) != 0;

   136                 break;

   137             }

   138         }

   139 

   140         if (isCamera) {

   141             // find out its driver "name"

   142             QString name;

   143             struct v4l2_capability vcap;

   144             memset(&vcap, 0, sizeof(struct v4l2_capability));

   145 

   146             if (ioctl(fd, VIDIOC_QUERYCAP, &vcap) != 0)

   147                 name = entryInfo.fileName();

   148             else

   149                 name = QString((const char*)vcap.card);

   150             //qDebug() << "found camera: " << name;

   151 

   152             m_names.append(entryInfo.filePath());

   153             m_descriptions.append(name);

   154         }

   155         ::close(fd);

   156     }

   157 }