Mul.h

Go to the documentation of this file.

/***************************************************************************
                  Mul.h  -  multiplier
                             -------------------
    begin                : Thu Nov 01 2007
    copyright            : (C) 2007 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef MUL_H
#define MUL_H

#include "config.h"

#include <QtGlobal>
#include <QMutex>
#include <QQueue>
#include <QSemaphore>

#include "libkwave/SampleArray.h"
#include "libkwave/SampleSink.h"
#include "libkwave/SampleSource.h"

class QVariant;

namespace Kwave
{

    class Q_DECL_EXPORT Mul: public Kwave::SampleSource
    {
        Q_OBJECT
        public:
            Mul();

            virtual ~Mul() Q_DECL_OVERRIDE;

            virtual void goOn() Q_DECL_OVERRIDE;

        signals:
            void output(Kwave::SampleArray data);

        public slots:

            void input_a(Kwave::SampleArray data);

            void input_b(Kwave::SampleArray data);

            void set_a(const QVariant &a);

            void set_b(const QVariant &b);

        private:

            virtual void multiply();

        private:

            QQueue<Kwave::SampleArray> m_queue_a;

            QQueue<Kwave::SampleArray> m_queue_b;

            QSemaphore m_sem_a;

            QSemaphore m_sem_b;

            Kwave::SampleArray m_a;

            Kwave::SampleArray m_b;

            Kwave::SampleArray m_buffer_x;

            bool m_a_is_const;

            bool m_b_is_const;

            float m_value_a;

            float m_value_b;

            QMutex m_lock;
    };
}

#endif /* MUL_H */

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