60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
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/*
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LICENSE
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-------
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Copyright 2005-2013 Nullsoft, Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of Nullsoft nor the names of its contributors may be used to
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endorse or promote products derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __NULLSOFT_DX9_PLUGIN_SHELL_FFT_H__
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#define __NULLSOFT_DX9_PLUGIN_SHELL_FFT_H__ 1
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class FFT
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{
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public:
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FFT();
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~FFT();
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void Init(int samples_in, int samples_out, int bEqualize=1, float envelope_power=1.0f);
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void time_to_frequency_domain(float *in_wavedata, float *out_spectraldata);
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int GetNumFreq() { return NFREQ; };
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void CleanUp();
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private:
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int m_ready;
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int m_samples_in;
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int NFREQ;
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void InitEnvelopeTable(float power);
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void InitEqualizeTable();
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void InitBitRevTable();
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void InitCosSinTable();
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int *bitrevtable;
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float *envelope;
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float *equalize;
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float *temp1;
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float *temp2;
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float (*cossintable)[2];
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};
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#endif
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