view data/model/test/MockWaveModel.cpp @ 1394:9ef1cc26024c

Add Range01 normalisation method to ColumnOp. This is the normalisation that is actually used in the Colour 3D Plot layer historically when column normalisation is enabled (not Max1 after all).

/* -*- 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 "MockWaveModel.h"

#include <cmath>

using namespace std;

MockWaveModel::MockWaveModel(vector<Sort> sorts, int length, int pad)
{
    for (auto sort: sorts) {
	m_data.push_back(generate(sort, length, pad));
    }
}

floatvec_t
MockWaveModel::getData(int channel, sv_frame_t start, sv_frame_t count) const
{
    sv_frame_t i = 0;

//    cerr << "MockWaveModel::getData(" << channel << "," << start << "," << count << "): ";

    floatvec_t data;
    
    while (i < count) {
	sv_frame_t idx = start + i;
	if (!in_range_for(m_data[channel], idx)) break;
	data.push_back(m_data[channel][idx]);
//	cerr << data[i] << " ";
	++i;
    }

//    cerr << endl;
    
    return data;
}

vector<floatvec_t>
MockWaveModel::getMultiChannelData(int fromchannel, int tochannel,
				   sv_frame_t start, sv_frame_t count) const
{
    vector<floatvec_t> data(tochannel - fromchannel + 1);
    
    for (int c = fromchannel; c <= tochannel; ++c) {
        data.push_back(getData(c, start, count));
    }

    return data;
}

vector<float>
MockWaveModel::generate(Sort sort, int length, int pad) const
{
    vector<float> data;

    for (int i = 0; i < pad; ++i) {
        data.push_back(0.f);
    }
    
    for (int i = 0; i < length; ++i) {

	double v = 0.0;
	
	switch (sort) {
	case DC: v = 1.0; break;
	case Sine: v = sin((2.0 * M_PI / 8.0) * i); break;
	case Cosine: v = cos((2.0 * M_PI / 8.0) * i); break;
	case Nyquist: v = (i % 2) * 2 - 1; break;
	case Dirac: v = (i == 0) ? 1.0 : 0.0; break;
	}

	data.push_back(float(v));
    }

    for (int i = 0; i < pad; ++i) {
        data.push_back(0.f);
    }

    return data;
}