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//

//  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 "qaudio.h"

#include "qaudiodeviceinfo.h"

#include "qaudiosystem.h"

QT_BEGIN_NAMESPACE

class InputPrivate;

class QAudioInputPrivate : public QAbstractAudioInput

{

    Q_OBJECT

public:

    QAudioInputPrivate(const QByteArray &device);

    ~QAudioInputPrivate();

    qint64 read(char* data, qint64 len);

    void start(QIODevice* device);

    QIODevice* start();

    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;

    void setFormat(const QAudioFormat& fmt);

    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;

    QTime timeStamp;

    QTime clockStamp;

    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