pilotclient/src/blacksound/sampleprovider/simplecompressoreffect.cpp

/* Copyright (C) 2019
 * swift project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 */

#include "simplecompressoreffect.h"
#include <QDebug>

namespace BlackSound
{
    namespace SampleProvider
    {
        CSimpleCompressorEffect::CSimpleCompressorEffect(ISampleProvider *source, QObject *parent) :
            ISampleProvider(parent),
            m_sourceStream(source)
        {
            m_simpleCompressor.setAttack(5.0);
            m_simpleCompressor.setRelease(10.0);
            m_simpleCompressor.setSampleRate(48000.0);
            m_simpleCompressor.setThresh(16.0);
            m_simpleCompressor.setRatio(6.0);
            m_simpleCompressor.setMakeUpGain(16.0);

            m_timer.start(3000);
        }

        int CSimpleCompressorEffect::readSamples(QVector<qint16> &samples, qint64 count)
        {
            int samplesRead = m_sourceStream->readSamples(samples, count);

            if (m_enabled)
            {
                for (int sample = 0; sample < samplesRead; sample += channels)
                {
                    double in1 = samples.at(sample) / 32768.0;
                    double in2 = (channels == 1) ? 0 : samples.at(sample + 1);
                    m_simpleCompressor.process(in1, in2);
                    samples[sample] = in1 * 32768.0;
                    if (channels > 1)
                        samples[sample + 1] = in2 * 32768.0f;
                }
            }
            return samplesRead;
        }

        void CSimpleCompressorEffect::setEnabled(bool enabled)
        {
            m_enabled = enabled;
        }

        void CSimpleCompressorEffect::setMakeUpGain(double gain)
        {
            m_simpleCompressor.setMakeUpGain(gain);
        }
    }
}