Initial implementation of Mac camera backend

Based on AVFoundation framework

Change-Id: If4cfd105a592f50b42606624548b9ffc870e3e47
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

src/plugins/avfoundation/camera/avfvideodevicecontrol.h

@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef AVFVIDEODEVICECONTROL_H
+#define AVFVIDEODEVICECONTROL_H
+
+#include <QtMultimedia/qvideodeviceselectorcontrol.h>
+#include <QtCore/qstringlist.h>
+
+#import <AVFoundation/AVFoundation.h>
+
+QT_BEGIN_NAMESPACE
+
+class AVFCameraSession;
+class AVFCameraService;
+
+class AVFVideoDeviceControl : public QVideoDeviceSelectorControl
+{
+Q_OBJECT
+public:
+    AVFVideoDeviceControl(AVFCameraService *service, QObject *parent = 0);
+    ~AVFVideoDeviceControl();
+
+    int deviceCount() const;
+
+    QString deviceName(int index) const;
+    QString deviceDescription(int index) const;
+
+    int defaultDevice() const;
+    int selectedDevice() const;
+
+public Q_SLOTS:
+    void setSelectedDevice(int index);
+
+public:
+    //device changed since the last createCaptureDevice()
+    bool isDirty() const { return m_dirty; }
+    AVCaptureDevice *createCaptureDevice();
+
+private:
+    AVFCameraService *m_service;
+
+    int m_selectedDevice;
+    bool m_dirty;
+    QStringList m_devices;
+    QStringList m_deviceDescriptions;
+};
+
+QT_END_NAMESPACE
+
+#endif