Add some media probing API.

Change-Id: Ib83918f99b699ac3fbc7ede82a392d00d4c18005
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

src/multimedia/controls/qmediaaudioprobecontrol.h

@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** 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 QMEDIAAUDIOPROBECONTROL_H
+#define QMEDIAAUDIOPROBECONTROL_H
+
+#include "qmediacontrol.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+class QAudioBuffer;
+class QMediaAudioProbeControl : public QMediaControl
+{
+    Q_OBJECT
+public:
+    virtual ~QMediaAudioProbeControl();
+
+signals:
+    void audioBufferProbed(const QAudioBuffer &buffer);
+
+protected:
+    explicit QMediaAudioProbeControl(QObject *parent = 0);
+};
+
+#define QMediaAudioProbeControl_iid "com.nokia.Qt.QMediaAudioProbeControl/1.0"
+Q_MEDIA_DECLARE_CONTROL(QMediaAudioProbeControl, QMediaAudioProbeControl_iid)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+
+#endif // QMEDIAAUDIOPROBECONTROL_H