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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef QAUDIOINPUT_SYMBIAN_P_H
#define QAUDIOINPUT_SYMBIAN_P_H
#include <QtMultimedia/qaudioengine.h>
#include <QTime>
#include <QTimer>
#include "qaudio_symbian_p.h"
QT_BEGIN_NAMESPACE
class QAudioInputPrivate;
class SymbianAudioInputPrivate : public QIODevice
{
friend class QAudioInputPrivate;
Q_OBJECT
public:
SymbianAudioInputPrivate(QAudioInputPrivate *audio);
~SymbianAudioInputPrivate();
qint64 readData(char *data, qint64 len);
qint64 writeData(const char *data, qint64 len);
void dataReady();
private:
QAudioInputPrivate *const m_audioDevice;
};
class QAudioInputPrivate
: public QAbstractAudioInput
{
friend class SymbianAudioInputPrivate;
Q_OBJECT
public:
QAudioInputPrivate(const QByteArray &device,
const QAudioFormat &audioFormat);
~QAudioInputPrivate();
// QAbstractAudioInput
QIODevice* start(QIODevice *device = 0);
void stop();
void reset();
void suspend();
void resume();
int bytesReady() const;
int periodSize() const;
void setBufferSize(int value);
int bufferSize() const;
void setNotifyInterval(int milliSeconds);
int notifyInterval() const;
qint64 processedUSecs() const;
qint64 elapsedUSecs() const;
QAudio::Error error() const;
QAudio::State state() const;
QAudioFormat format() const;
private slots:
void pullData();
void devsoundInitializeComplete(int err);
void devsoundBufferToBeEmptied(CMMFBuffer *);
void devsoundRecordError(int err);
private:
void open();
void startRecording();
void startDataTransfer();
CMMFDataBuffer* currentBuffer() const;
void pushData();
qint64 read(char *data, qint64 len);
void bufferEmptied();
Q_INVOKABLE void close();
qint64 getSamplesRecorded() const;
void setError(QAudio::Error error);
void setState(SymbianAudio::State state);
private:
const QByteArray m_device;
const QAudioFormat m_format;
int m_clientBufferSize;
int m_notifyInterval;
QScopedPointer<QTimer> m_notifyTimer;
QTime m_elapsed;
QAudio::Error m_error;
SymbianAudio::State m_internalState;
QAudio::State m_externalState;
bool m_pullMode;
QIODevice *m_sink;
QScopedPointer<QTimer> m_pullTimer;
SymbianAudio::DevSoundWrapper* m_devSound;
// Latest buffer provided by DevSound, to be empied of data.
CMMFDataBuffer *m_devSoundBuffer;
int m_devSoundBufferSize;
// Total amount of data in buffers provided by DevSound
int m_totalBytesReady;
// Queue of buffers returned after call to CMMFDevSound::Pause().
QList<CMMFDataBuffer *> m_devSoundBufferQ;
// Current read position within m_devSoundBuffer
qint64 m_devSoundBufferPos;
// Samples recorded up to the last call to suspend(). It is necessary
// to cache this because suspend() is implemented using
// CMMFDevSound::Stop(), which resets DevSound's SamplesRecorded() counter.
quint32 m_totalSamplesRecorded;
};
QT_END_NAMESPACE
#endif
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