comparison cq/CQSpectrogram.h @ 116:6deec2a51d13

Moving to standalone library layout

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+/*
+    Constant-Q library
+    Copyright (c) 2013-2014 Queen Mary, University of London
+
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#ifndef CQSPECTROGRAM_H
+#define CQSPECTROGRAM_H
+
+#include "ConstantQ.h"
+
+class CQSpectrogram : public CQBase
+{
+public:
+    enum Interpolation {
+	InterpolateZeros, // leave empty cells as zero
+	InterpolateHold, // repeat prior cell
+	InterpolateLinear, // linear interpolation between consecutive time cells
+    };
+
+    CQSpectrogram(double sampleRate,
+                  double minFreq, double maxFreq,
+                  int binsPerOctave,
+                  Interpolation interpolation);
+    virtual ~CQSpectrogram();
+
+    virtual double getSampleRate() const { return m_cq.getSampleRate(); }
+    virtual int getBinsPerOctave() const { return m_cq.getBinsPerOctave(); }
+    virtual int getOctaves() const { return m_cq.getOctaves(); }
+    virtual int getTotalBins() const { return m_cq.getTotalBins(); }
+    virtual int getColumnHop() const { return m_cq.getColumnHop(); }
+    virtual int getLatency() const { return m_cq.getLatency(); } 
+    virtual double getMaxFrequency() const { return m_cq.getMaxFrequency(); }
+    virtual double getMinFrequency() const { return m_cq.getMinFrequency(); }
+    virtual double getBinFrequency(int bin) const { return m_cq.getBinFrequency(bin); }
+
+    RealBlock process(const RealSequence &);
+    RealBlock getRemainingOutput();
+
+private:
+    ConstantQ m_cq;
+    Interpolation m_interpolation;
+
+    RealBlock m_buffer;
+    RealBlock postProcess(const ComplexBlock &, bool insist);
+    RealBlock fetchHold(bool insist);
+    RealBlock fetchLinear(bool insist);
+    RealBlock linearInterpolated(const RealBlock &, int, int);
+    RealColumn m_prevColumn;
+};
+
+#endif