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/*
* SpectrumAnalyzer.h - spectrum anaylzer effect plugin
*
* Copyright (c) 2008-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of LMMS - https://lmms.io
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#ifndef _SPECTRUM_ANALYZER_H
#define _SPECTRUM_ANALYZER_H
#include "Effect.h"
#include "fft_helpers.h"
#include "SpectrumAnalyzerControls.h"
const int MAX_BANDS = 249;
class SpectrumAnalyzer : public Effect
{
public:
enum ChannelModes
{
MergeChannels,
LeftChannel,
RightChannel
} ;
SpectrumAnalyzer( Model * _parent,
const Descriptor::SubPluginFeatures::Key * _key );
virtual ~SpectrumAnalyzer();
virtual bool processAudioBuffer( sampleFrame * _buf,
const fpp_t _frames );
virtual EffectControls * controls()
{
return( &m_saControls );
}
private:
SpectrumAnalyzerControls m_saControls;
fftwf_plan m_fftPlan;
fftwf_complex * m_specBuf;
float m_absSpecBuf[FFT_BUFFER_SIZE+1];
float m_buffer[FFT_BUFFER_SIZE*2];
int m_framesFilledUp;
float m_bands[MAX_BANDS];
float m_energy;
friend class SpectrumAnalyzerControls;
friend class SpectrumView;
} ;
#endif
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