/****************************************************************************

**

** 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 QAUDIOINPUTALSA_H

#define QAUDIOINPUTALSA_H

#include <alsa/asoundlib.h>

#include <QtCore/qfile.h>

#include <QtCore/qdebug.h>

#include <QtCore/qtimer.h>

#include <QtCore/qstring.h>

#include <QtCore/qstringlist.h>

#include <QtCore/qdatetime.h>

#include <QtMultimedia/qaudio.h>

#include <QtMultimedia/qaudiodeviceinfo.h>

#include <QtMultimedia/qaudioengine.h>

QT_BEGIN_NAMESPACE

class InputPrivate;

class QAudioInputPrivate : public QAbstractAudioInput

{

    Q_OBJECT

public:

    QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);

    ~QAudioInputPrivate();

    qint64 read(char* data, qint64 len);

    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;

    bool resuming;

    snd_pcm_t* handle;

    qint64 totalTimeValue;

    QIODevice* audioSource;

    QAudioFormat settings;

    QAudio::Error errorState;

    QAudio::State deviceState;

private slots:

    void userFeed();

    bool deviceReady();

private:

    int xrun_recovery(int err);

    int setFormat();

    bool open();

    void close();

    void drain();

    QTimer* timer;

    qint64 elapsedTimeOffset;

    int intervalTime;

    char* audioBuffer;

    int bytesAvailable;

    QByteArray m_device;

    bool pullMode;

    int buffer_size;

    int period_size;

    unsigned int buffer_time;

    unsigned int period_time;

    snd_pcm_uframes_t buffer_frames;

    snd_pcm_uframes_t period_frames;

    snd_async_handler_t* ahandler;

    snd_pcm_access_t access;

    snd_pcm_format_t pcmformat;

    snd_timestamp_t* timestamp;

    snd_pcm_hw_params_t *hwparams;

};

class InputPrivate : public QIODevice

{

    Q_OBJECT

public:

    InputPrivate(QAudioInputPrivate* audio);

    ~InputPrivate();

    qint64 readData( char* data, qint64 len);

    qint64 writeData(const char* data, qint64 len);

    void trigger();

private:

    QAudioInputPrivate *audioDevice;

};

QT_END_NAMESPACE

#endif