AFV initial commit

src/blacksound/sampleprovider/simplecompressoreffect.cpp

@@ -0,0 +1,45 @@
+#include "simplecompressoreffect.h"
+#include <QDebug>
+
+SimpleCompressorEffect::SimpleCompressorEffect(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 SimpleCompressorEffect::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 SimpleCompressorEffect::setEnabled(bool enabled)
+{
+    m_enabled = enabled;
+}
+
+void SimpleCompressorEffect::setMakeUpGain(double gain)
+{
+    m_simpleCompressor.setMakeUpGain(gain);
+}