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79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
/*
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* SpectrumAnalyzer.h - spectrum anaylzer effect plugin
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*
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* Copyright (c) 2008-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _SPECTRUM_ANALYZER_H
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#define _SPECTRUM_ANALYZER_H
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#include "Effect.h"
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#include "fft_helpers.h"
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#include "SpectrumAnalyzerControls.h"
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const int MAX_BANDS = 249;
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class SpectrumAnalyzer : public Effect
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{
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public:
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enum ChannelModes
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{
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MergeChannels,
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LeftChannel,
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RightChannel
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} ;
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SpectrumAnalyzer( Model * _parent,
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const Descriptor::SubPluginFeatures::Key * _key );
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virtual ~SpectrumAnalyzer();
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virtual bool processAudioBuffer( sampleFrame * _buf,
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const fpp_t _frames );
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virtual EffectControls * controls()
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{
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return( &m_saControls );
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}
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private:
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SpectrumAnalyzerControls m_saControls;
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fftwf_plan m_fftPlan;
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fftwf_complex * m_specBuf;
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float m_absSpecBuf[FFT_BUFFER_SIZE+1];
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float m_buffer[FFT_BUFFER_SIZE*2];
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int m_framesFilledUp;
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float m_bands[MAX_BANDS];
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float m_energy;
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friend class SpectrumAnalyzerControls;
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friend class SpectrumView;
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} ;
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#endif
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