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