52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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This file is part of EqualizerAPO, a system-wide equalizer.
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Copyright (C) 2015 Jonas Thedering
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cmath>
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#include "AnalysisPlotScene.h"
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using namespace std;
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AnalysisPlotScene::AnalysisPlotScene(QObject* parent)
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: FrequencyPlotScene(parent)
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{
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}
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void AnalysisPlotScene::setFreqData(fftwf_complex* freqData, int frameCount, unsigned sampleRate)
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{
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nodes.clear();
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for (int i = 0; i < frameCount / 2; i++)
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{
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float freq = (i * 1.0f / frameCount) * sampleRate;
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// GainIterator can't handle 0 Hz node
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if (freq == 0.0f)
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freq = 0.001f;
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float gain = sqrt(freqData[i][0] * freqData[i][0] + freqData[i][1] * freqData[i][1]);
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float dbGain = log10(gain) * 20;
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nodes.push_back(FilterNode(freq, dbGain));
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}
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update();
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}
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vector<FilterNode> AnalysisPlotScene::getNodes() const
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{
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return nodes;
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}
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