bufferedwaveprovider.cpp

// SPDX-FileCopyrightText: Copyright (C) 2019 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
#include "bufferedwaveprovider.h"
 
#include <QDebug>
 
#include "sound/audioutilities.h"
 
namespace swift::sound::sample_provider
{
    CBufferedWaveProvider::CBufferedWaveProvider(const QAudioFormat &format, QObject *parent) : ISampleProvider(parent)
    {
        const QString on =
            QStringLiteral("%1 format: '%2'").arg(this->metaObject()->className(), swift::sound::toQString(format));
        this->setObjectName(on);
 
        // Set buffer size to 10 secs
        m_maxBufferSize = format.bytesForDuration(10 * 1000 * 1000);
    }
 
    void CBufferedWaveProvider::addSamples(const QVector<float> &samples)
    {
        int delta = m_audioBuffer.size() + samples.size() - m_maxBufferSize;
        if (delta > 0) { m_audioBuffer.remove(0, delta); }
        m_audioBuffer.append(samples);
    }
 
    int CBufferedWaveProvider::readSamples(QVector<float> &samples, qint64 count)
    {
        const int len = static_cast<int>(qMin(count, static_cast<qint64>(m_audioBuffer.size())));
        samples = m_audioBuffer.mid(0, len);
        // if (len != 0) qDebug() << "Reading" << count << "samples." << m_audioBuffer.size() << "currently in the
        // buffer.";
        m_audioBuffer.remove(0, len);
        return len;
    }
 
    void CBufferedWaveProvider::clearBuffer() { m_audioBuffer.clear(); }
} // namespace swift::sound::sample_provider