equalizersampleprovider.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_EQUALIZERSAMPLEPROVIDER_H
#define SWIFT_SOUND_SAMPLEPROVIDER_EQUALIZERSAMPLEPROVIDER_H
 
#include <QSharedPointer>
#include <QVector>
 
#include "sound/dsp/biquadfilter.h"
#include "sound/sampleprovider/sampleprovider.h"
#include "sound/swiftsoundexport.h"
 
namespace swift::sound::sample_provider
{
    enum EqualizerPresets
    {
        VHFEmulation = 1
    };
 
    class SWIFT_SOUND_EXPORT CEqualizerSampleProvider : public ISampleProvider
    {
        Q_OBJECT
 
    public:
        CEqualizerSampleProvider(ISampleProvider *sourceProvider, EqualizerPresets preset, QObject *parent = nullptr);
 
        virtual int readSamples(QVector<float> &samples, qint64 count) override;
 
        void setBypassEffects(bool value) { m_bypass = value; }
 
        double outputGain() const;
        void setOutputGain(double outputGain);
 
    private:
        void setupPreset(EqualizerPresets preset);
 
        ISampleProvider *m_sourceProvider = nullptr;
        int m_channels = 1;
        bool m_bypass = false;
        double m_outputGain = 1.0;
        QVector<dsp::BiQuadFilter> m_filters;
    };
} // namespace swift::sound::sample_provider
 
#endif // SWIFT_SOUND_SAMPLEPROVIDER_EQUALIZERSAMPLEPROVIDER_H