* Initial import

src/HighFrequencyAudioCurve.cpp

@@ -0,0 +1,62 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rubber Band
+    An audio time-stretching and pitch-shifting library.
+    Copyright 2007 Chris Cannam.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "HighFrequencyAudioCurve.h"
+
+namespace RubberBand
+{
+
+HighFrequencyAudioCurve::HighFrequencyAudioCurve(size_t sampleRate, size_t blockSize) :
+    AudioCurve(sampleRate, blockSize)
+{
+    m_prevMag = new double[m_blockSize/2 + 1];
+
+    for (size_t i = 0; i <= m_blockSize/2; ++i) {
+        m_prevMag[i] = 0.f;
+    }
+}
+
+HighFrequencyAudioCurve::~HighFrequencyAudioCurve()
+{
+    delete[] m_prevMag;
+}
+
+void
+HighFrequencyAudioCurve::reset()
+{
+    for (size_t i = 0; i <= m_blockSize/2; ++i) {
+        m_prevMag[i] = 0;
+    }
+}
+
+void
+HighFrequencyAudioCurve::setBlockSize(size_t newSize)
+{
+    m_blockSize = newSize;
+}
+
+float
+HighFrequencyAudioCurve::process(float *mag, size_t increment)
+{
+    float result = 0.0;
+
+    for (size_t n = 0; n <= m_blockSize / 2; ++n) {
+        result += mag[n];
+    }
+
+    return result;
+}
+
+}
+