view data/fileio/FFTFuzzyAdapter.cpp @ 875:3e6ed8a8577b tonioni

Use a sparse time-value model only for outputs with fixed bin count of 1, not for those with unknown bin count.
(Precursor to using more than one model for outputs with unknown bin count)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 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 "FFTFuzzyAdapter.h"

#include <cassert>

FFTFuzzyAdapter::FFTFuzzyAdapter(const DenseTimeValueModel *model,
				 int channel,
				 WindowType windowType,
				 size_t windowSize,
				 size_t windowIncrement,
				 size_t fftSize,
				 bool polar,
				 size_t fillFromColumn) :
    m_server(0),
    m_xshift(0),
    m_yshift(0)
{
    m_server = FFTDataServer::getFuzzyInstance(model,
                                               channel,
                                               windowType,
                                               windowSize,
                                               windowIncrement,
                                               fftSize,
                                               polar,
                                               fillFromColumn);

    size_t xratio = windowIncrement / m_server->getWindowIncrement();
    size_t yratio = m_server->getFFTSize() / fftSize;

    while (xratio > 1) {
        if (xratio & 0x1) {
            cerr << "ERROR: FFTFuzzyAdapter: Window increment ratio "
                      << windowIncrement << " / "
                      << m_server->getWindowIncrement()
                      << " must be a power of two" << endl;
            assert(!(xratio & 0x1));
        }
        ++m_xshift;
        xratio >>= 1;
    }

    while (yratio > 1) {
        if (yratio & 0x1) {
            cerr << "ERROR: FFTFuzzyAdapter: FFT size ratio "
                      << m_server->getFFTSize() << " / " << fftSize
                      << " must be a power of two" << endl;
            assert(!(yratio & 0x1));
        }
        ++m_yshift;
        yratio >>= 1;
    }
}

FFTFuzzyAdapter::~FFTFuzzyAdapter()
{
    FFTDataServer::releaseInstance(m_server);
}