Mercurial > hg > svcore
view data/fileio/FFTFuzzyAdapter.cpp @ 1059:7598a78cf915 tonioni
M_PI
author | Chris Cannam |
---|---|
date | Mon, 30 Mar 2015 16:58:01 +0100 |
parents | 59e7fe1b1003 |
children |
line wrap: on
line source
/* -*- 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, int windowSize, int windowIncrement, int fftSize, bool polar, int fillFromColumn) : m_server(0), m_xshift(0), m_yshift(0) { m_server = FFTDataServer::getFuzzyInstance(model, channel, windowType, windowSize, windowIncrement, fftSize, polar, fillFromColumn); int xratio = windowIncrement / m_server->getWindowIncrement(); int 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); }