60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/*
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* SpectralCentroidprint -- 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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#ifndef CHROMAPRINT_SPECTRAL_CENTROID_H_
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#define CHROMAPRINT_SPECTRAL_CENTROID_H_
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#include <math.h>
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#include <vector>
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#include "utils.h"
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#include "fft_frame_consumer.h"
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#include "feature_vector_consumer.h"
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namespace Chromaprint
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{
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class SpectralCentroid : public FFTFrameConsumer
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{
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public:
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SpectralCentroid(int num_bands, int min_freq, int max_freq, int frame_size, int sample_rate, FeatureVectorConsumer *consumer);
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~SpectralCentroid();
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void Reset();
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void Consume(const FFTFrame &frame);
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protected:
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int NumBands() const { return m_bands.size() - 1; }
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int FirstIndex(int band) const { return m_bands[band]; }
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int LastIndex(int band) const { return m_bands[band + 1]; }
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private:
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CHROMAPRINT_DISABLE_COPY(SpectralCentroid);
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void PrepareBands(int num_bands, int min_freq, int max_freq, int frame_size, int sample_rate);
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std::vector<int> m_bands;
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std::vector<double> m_features;
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FeatureVectorConsumer *m_consumer;
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};
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};
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#endif
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