sinusgenerator.h

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// SPDX-FileCopyrightText: Copyright (C) 2019 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1

 
#ifndef SWIFT_SOUND_SAMPLEPROVIDER_SINUSGENERATOR_H
#define SWIFT_SOUND_SAMPLEPROVIDER_SINUSGENERATOR_H
 
#include <QtMath>
 
#include "sound/sampleprovider/sampleprovider.h"
#include "sound/swiftsoundexport.h"
 
namespace swift::sound::sample_provider
{
    class SWIFT_SOUND_EXPORT CSinusGenerator : public ISampleProvider
    {
        Q_OBJECT
 
    public:
        CSinusGenerator(double frequencyHz, QObject *parent = nullptr);

        int readSamples(QVector<float> &samples, qint64 count) override;

        void setGain(double gain) { m_gain = gain; }

        void setFrequency(double frequencyHz);
 
    private:
        double m_gain = 0.0;
        double m_frequencyHz = 0.0;
        double m_sampleRate = 48000;
        int m_nSample = 0;
        static constexpr double s_twoPi = 2 * M_PI;
    };
} // namespace swift::sound::sample_provider
 
#endif // SWIFT_SOUND_SAMPLEPROVIDER_SINUSGENERATOR_H