63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
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/*
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* Chromaprint -- Audio fingerprinting toolkit
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* Copyright (C) 2010 Lukas Lalinsky <lalinsky@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*/
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#include <limits>
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#include <assert.h>
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#include <math.h>
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#include "chroma_resampler.h"
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#include "utils.h"
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using namespace std;
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using namespace Chromaprint;
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ChromaResampler::ChromaResampler(int factor, FeatureVectorConsumer *consumer)
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: m_result(12, 0.0),
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m_iteration(0),
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m_factor(factor),
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m_consumer(consumer)
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{
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}
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ChromaResampler::~ChromaResampler()
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{
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}
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void ChromaResampler::Reset()
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{
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m_iteration = 0;
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fill(m_result.begin(), m_result.end(), 0.0);
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}
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void ChromaResampler::Consume(std::vector<double> &features)
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{
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for (int i = 0; i < 12; i++) {
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m_result[i] += features[i];
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}
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m_iteration += 1;
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if (m_iteration == m_factor) {
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for (int i = 0; i < 12; i++) {
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m_result[i] /= m_factor;
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}
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m_consumer->Consume(m_result);
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Reset();
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}
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}
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