Add QAudioInput/Output

Add those classes representing physical inputs/outputs to
be used together with QMediaPlayer and QMediaCaptureSession.

Introduce corresponding backend classes so that the class
can directly control what's happening on the backend side.

Change-Id: I9b25b2fb30791ef1a38211796917eb63d840db08
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/multimedia/audio/qaudioinput.h b/src/multimedia/audio/qaudioinput.h
new file mode 100644
index 000000000..bc0bf89ef
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAUDIOINPUTDEVICE_H
+#define QAUDIOINPUTDEVICE_H
+
+#include <QtCore/qobject.h>
+#include <QtMultimedia/qtmultimediaglobal.h>
+#include <QtMultimedia/qaudio.h>
+
+QT_BEGIN_NAMESPACE
+
+class QAudioDevice;
+class QPlatformAudioInput;
+
+class Q_MULTIMEDIA_EXPORT QAudioInput : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QAudioDevice device READ device WRITE setDevice NOTIFY deviceChanged)
+    Q_PROPERTY(float volume READ volume WRITE setVolume NOTIFY volumeChanged)
+    Q_PROPERTY(bool muted READ isMuted WRITE setMuted NOTIFY mutedChanged)
+
+public:
+    explicit QAudioInput(QObject *parent = nullptr);
+    explicit QAudioInput(const QAudioDevice &deviceInfo, QObject *parent = nullptr);
+    ~QAudioInput();
+
+    QAudioDevice device() const;
+    float volume() const;
+    bool isMuted() const;
+
+public Q_SLOTS:
+    void setDevice(const QAudioDevice &device);
+    void setVolume(float volume);
+    void setMuted(bool muted);
+
+Q_SIGNALS:
+    void deviceChanged();
+    void volumeChanged(float volume);
+    void mutedChanged(bool muted);
+
+private:
+    Q_DISABLE_COPY(QAudioInput)
+    QPlatformAudioInput *d = nullptr;
+};
+
+QT_END_NAMESPACE
+
+#endif  // QAUDIOINPUTDEVICE_H