svcore  1.9
FFTFuzzyAdapter.h
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Sonic Visualiser
00005     An audio file viewer and annotation editor.
00006     Centre for Digital Music, Queen Mary, University of London.
00007     This file copyright 2006 Chris Cannam.
00008     
00009     This program is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU General Public License as
00011     published by the Free Software Foundation; either version 2 of the
00012     License, or (at your option) any later version.  See the file
00013     COPYING included with this distribution for more information.
00014 */
00015 
00016 #ifndef _FFT_FUZZY_ADAPTER_H_
00017 #define _FFT_FUZZY_ADAPTER_H_
00018 
00019 #include "FFTDataServer.h"
00020 
00021 class FFTFuzzyAdapter
00022 {
00023 public:
00024     FFTFuzzyAdapter(const DenseTimeValueModel *model,
00025                     int channel,
00026                     WindowType windowType,
00027                     int windowSize,
00028                     int windowIncrement,
00029                     int fftSize,
00030                     bool polar,
00031                     int fillFromColumn = 0);
00032     ~FFTFuzzyAdapter();
00033 
00034     int getWidth() const {
00035         return m_server->getWidth() >> m_xshift;
00036     }
00037     int getHeight() const {
00038         return m_server->getHeight() >> m_yshift;
00039     }
00040     float getMagnitudeAt(int x, int y) {
00041         return m_server->getMagnitudeAt(x << m_xshift, y << m_yshift);
00042     }
00043     float getNormalizedMagnitudeAt(int x, int y) {
00044         return m_server->getNormalizedMagnitudeAt(x << m_xshift, y << m_yshift);
00045     }
00046     float getMaximumMagnitudeAt(int x) {
00047         return m_server->getMaximumMagnitudeAt(x << m_xshift);
00048     }
00049     float getPhaseAt(int x, int y) {
00050         return m_server->getPhaseAt(x << m_xshift, y << m_yshift);
00051     }
00052     void getValuesAt(int x, int y, float &real, float &imaginary) {
00053         m_server->getValuesAt(x << m_xshift, y << m_yshift, real, imaginary);
00054     }
00055     bool isColumnReady(int x) {
00056         return m_server->isColumnReady(x << m_xshift);
00057     }
00058     bool isLocalPeak(int x, int y) {
00059         float mag = getMagnitudeAt(x, y);
00060         if (y > 0 && mag < getMagnitudeAt(x, y - 1)) return false;
00061         if (y < getHeight() - 1 && mag < getMagnitudeAt(x, y + 1)) return false;
00062         return true;
00063     }
00064     bool isOverThreshold(int x, int y, float threshold) {
00065         return getMagnitudeAt(x, y) > threshold;
00066     }
00067 
00068     int getFillCompletion() const { return m_server->getFillCompletion(); }
00069     int getFillExtent() const { return m_server->getFillExtent(); }
00070 
00071 private:
00072     FFTFuzzyAdapter(const FFTFuzzyAdapter &); // not implemented
00073     FFTFuzzyAdapter &operator=(const FFTFuzzyAdapter &); // not implemented
00074 
00075     FFTDataServer *m_server;
00076     int m_xshift;
00077     int m_yshift;
00078 };
00079 
00080 #endif