qqnxaudiosource_p.h

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// Copyright (C) 2016 Research In Motion
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QNXAUDIOINPUT_H
#define QNXAUDIOINPUT_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include "private/qaudiosystem_p.h"
 
#include "qqnxaudioutils_p.h"
 
#include <QSocketNotifier>
#include <QIODevice>
#include <QElapsedTimer>
#include <QTimer>
 
#include <sys/asoundlib.h>
 
QT_BEGIN_NAMESPACE
 
class QQnxAudioSource : public QPlatformAudioSource
{
    Q_OBJECT
 
public:
    explicit QQnxAudioSource(QAudioDevice deviceInfo, const QAudioFormat &, QObject *parent);
    ~QQnxAudioSource();
 
    void start(QIODevice*) override;
    QIODevice* start() override;
    void stop() override;
    void reset() override;
    void suspend() override;
    void resume() override;
    qsizetype bytesReady() const override;
    void setBufferSize(qsizetype ) override;
    qsizetype bufferSize() const  override;
    qint64 processedUSecs() const override;
    QAudio::State state() const override;
 
private slots:
    void userFeed();
    bool deviceReady();
 
private:
    friend class InputPrivate;
 
    bool open();
    void close();
    qint64 read(char *data, qint64 len);
    void changeState(QAudio::State state, QAudio::Error error);
 
    QIODevice *m_audioSource;
    QnxAudioUtils::HandleUniquePtr m_pcmHandle;
    QSocketNotifier *m_pcmNotifier;
 
    QAudio::State m_state;
 
    qint64 m_bytesRead;
    qint64 m_elapsedTimeOffset;
    qint64 m_totalTimeValue;
 
    int m_bytesAvailable;
    int m_bufferSize;
    int m_periodSize;
 
    bool m_pullMode;
};
 
class InputPrivate : public QIODevice
{
    Q_OBJECT
public:
    InputPrivate(QQnxAudioSource *audio);
 
    qint64 readData(char *data, qint64 len) override;
    qint64 writeData(const char *data, qint64 len) override;
 
    qint64 bytesAvailable() const override;
 
    bool isSequential() const override;
 
    void trigger();
 
private:
    QQnxAudioSource *m_audioDevice;
};
 
QT_END_NAMESPACE
 
#endif