OpenSL ES audio plugin.
Adds support for QAudioOutput, QAudioInput and QAudioDeviceInfo using OpenSL ES 1.0.1. This plugin is used on Android. Change-Id: Idf2c22a861e067196f6c5139e51393b086f64183 Reviewed-by: Christian Stromme <christian.stromme@digia.com>
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Yoann Lopes
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The Qt Project
The Qt Project
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155
src/plugins/opensles/qopenslesaudiooutput.h
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155
src/plugins/opensles/qopenslesaudiooutput.h
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QOPENSLESAUDIOOUTPUT_H
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#define QOPENSLESAUDIOOUTPUT_H
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#include <qaudiosystem.h>
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#include <SLES/OpenSLES.h>
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#include <qbytearray.h>
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#include <qmap.h>
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#include <QTime>
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QT_BEGIN_NAMESPACE
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class QOpenSLESAudioOutput : public QAbstractAudioOutput
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{
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Q_OBJECT
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public:
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QOpenSLESAudioOutput(const QByteArray &device);
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~QOpenSLESAudioOutput();
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void start(QIODevice *device) Q_DECL_OVERRIDE;
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QIODevice *start() Q_DECL_OVERRIDE;
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void stop() Q_DECL_OVERRIDE;
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void reset() Q_DECL_OVERRIDE;
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void suspend() Q_DECL_OVERRIDE;
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void resume() Q_DECL_OVERRIDE;
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int bytesFree() const Q_DECL_OVERRIDE;
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int periodSize() const Q_DECL_OVERRIDE;
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void setBufferSize(int value) Q_DECL_OVERRIDE;
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int bufferSize() const Q_DECL_OVERRIDE;
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void setNotifyInterval(int milliSeconds) Q_DECL_OVERRIDE;
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int notifyInterval() const Q_DECL_OVERRIDE;
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qint64 processedUSecs() const Q_DECL_OVERRIDE;
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qint64 elapsedUSecs() const Q_DECL_OVERRIDE;
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QAudio::Error error() const Q_DECL_OVERRIDE;
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QAudio::State state() const Q_DECL_OVERRIDE;
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void setFormat(const QAudioFormat &format) Q_DECL_OVERRIDE;
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QAudioFormat format() const Q_DECL_OVERRIDE;
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void setVolume(qreal volume) Q_DECL_OVERRIDE;
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qreal volume() const Q_DECL_OVERRIDE;
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void setCategory(const QString &category) Q_DECL_OVERRIDE;
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QString category() const Q_DECL_OVERRIDE;
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private:
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friend class SLIODevicePrivate;
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Q_INVOKABLE void onEOSEvent();
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void bufferAvailable(quint32 count, quint32 playIndex);
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static void playCallback(SLPlayItf playItf, void *ctx, SLuint32 event);
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static void bufferQueueCallback(SLBufferQueueItf bufferQueue, void *ctx);
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bool preparePlayer();
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void destroyPlayer();
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qint64 writeData(const char *data, qint64 len);
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void setState(QAudio::State state);
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void setError(QAudio::Error error);
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SLmillibel adjustVolume(qreal vol);
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QByteArray m_deviceName;
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QAudio::State m_state;
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QAudio::Error m_error;
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SLObjectItf m_outputMixObject;
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SLObjectItf m_playerObject;
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SLPlayItf m_playItf;
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SLVolumeItf m_volumeItf;
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SLBufferQueueItf m_bufferQueueItf;
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QIODevice *m_audioSource;
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char *m_buffers;
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qreal m_volume;
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bool m_pullMode;
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int m_nextBuffer;
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int m_bufferSize;
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int m_notifyInterval;
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int m_periodSize;
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qint64 m_elapsedTime;
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qint64 m_processedBytes;
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QAtomicInt m_availableBuffers;
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qint32 m_streamType;
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QTime m_clockStamp;
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QAudioFormat m_format;
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QString m_category;
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static QMap<QString, qint32> m_categories;
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};
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class SLIODevicePrivate : public QIODevice
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{
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Q_OBJECT
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public:
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inline SLIODevicePrivate(QOpenSLESAudioOutput *audio) : m_audioDevice(audio) {}
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inline ~SLIODevicePrivate() Q_DECL_OVERRIDE {}
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protected:
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inline qint64 readData(char *, qint64) Q_DECL_OVERRIDE { return 0; }
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inline qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
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private:
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QOpenSLESAudioOutput *m_audioDevice;
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};
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qint64 SLIODevicePrivate::writeData(const char *data, qint64 len)
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{
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Q_ASSERT(m_audioDevice);
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return m_audioDevice->writeData(data, len);
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}
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QT_END_NAMESPACE
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#endif // QOPENSLESAUDIOOUTPUT_H
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