refactor: Rename BlackSound to swift::sound

src/sound/sampleprovider/volumesampleprovider.cpp

@@ -0,0 +1,40 @@
+// SPDX-FileCopyrightText: Copyright (C) 2019 swift Project Community / Contributors
+// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
+
+//! \file
+
+#include "volumesampleprovider.h"
+#include "blackmisc/metadatautils.h"
+
+using namespace BlackMisc;
+
+namespace swift::sound::sample_provider
+{
+    CVolumeSampleProvider::CVolumeSampleProvider(ISampleProvider *sourceProvider, QObject *parent) : ISampleProvider(parent),
+                                                                                                     m_sourceProvider(sourceProvider)
+    {
+        Q_ASSERT_X(sourceProvider, Q_FUNC_INFO, "Need source provider");
+        const QString on = QStringLiteral("%1 with source: %2").arg(classNameShort(this), sourceProvider->objectName());
+        this->setObjectName(on);
+    }
+
+    int CVolumeSampleProvider::readSamples(QVector<float> &samples, qint64 count)
+    {
+        const int samplesRead = m_sourceProvider->readSamples(samples, count);
+        if (!qFuzzyCompare(m_gainRatio, 1.0))
+        {
+            for (int n = 0; n < samplesRead; n++)
+            {
+                samples[n] = static_cast<float>(m_gainRatio * samples[n]);
+            }
+        }
+        return samplesRead;
+    }
+
+    bool CVolumeSampleProvider::setGainRatio(double volume)
+    {
+        const bool changed = !qFuzzyCompare(m_gainRatio, volume);
+        if (changed) { m_gainRatio = volume; }
+        return changed;
+    }
+} // ns