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https://github.com/cookiengineer/audacity
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101 lines
4.3 KiB
C++
101 lines
4.3 KiB
C++
#ifndef __realfftf48x_h
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#define __realfftf48x_h
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#define fft_type float
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int SmallRB(int bits, int numberBits);
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enum {
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FFT_SinCosBRTable,
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FFT_SinCosTableVBR16,
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FFT_SinCosTableBR16,
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FFT_FastMathBR16,
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FFT_FastMathBR24
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};
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/* wrapper funcitons. If passed -1 function choice will be made locally */
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void RealFFTf1x(fft_type *,HFFT, int functionType=-1);
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void InverseRealFFTf1x(fft_type *,HFFT, int functionType=-1);
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void ReorderToTime1x(HFFT hFFT, fft_type *buffer, fft_type *TimeOut, int functionType=-1);
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void ReorderToFreq1x(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut, int functionType=-1);
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void RealFFTf4x(fft_type *,HFFT, int functionType=-1);
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void InverseRealFFTf4x(fft_type *,HFFT, int functionType=-1);
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void ReorderToTime4x(HFFT hFFT, fft_type *buffer, fft_type *TimeOut, int functionType=-1);
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void ReorderToFreq4x(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut, int functionType=-1);
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/* SinCosBRTable versions */
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void RealFFTf1xSinCosBRTable(fft_type *,HFFT);
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void InverseRealFFTf1xSinCosBRTable(fft_type *,HFFT);
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void ReorderToTime1xSinCosBRTable(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq1xSinCosBRTable(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void RealFFTf4xSinCosBRTable(fft_type *,HFFT);
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void InverseRealFFTf4xSinCosBRTable(fft_type *,HFFT);
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void ReorderToTime4xSinCosBRTable(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq4xSinCosBRTable(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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/* Fast Math BR16 versions */
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void RealFFTf1xFastMathBR16(fft_type *,HFFT);
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void InverseRealFFTf1xFastMathBR16(fft_type *,HFFT);
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void ReorderToTime1xFastMathBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq1xFastMathBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void RealFFTf4xFastMathBR16(fft_type *,HFFT);
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void InverseRealFFTf4xFastMathBR16(fft_type *,HFFT);
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void ReorderToTime4xFastMathBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq4xFastMathBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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/* Fast Math BR24 versions */
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void RealFFTf1xFastMathBR24(fft_type *,HFFT);
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void InverseRealFFTf1xFastMathBR24(fft_type *,HFFT);
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void ReorderToTime1xFastMathBR24(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq1xFastMathBR24(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void RealFFTf4xFastMathBR24(fft_type *,HFFT);
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void InverseRealFFTf4xFastMathBR24(fft_type *,HFFT);
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void ReorderToTime4xFastMathBR24(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq4xFastMathBR24(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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/* SinCosTable virtual BR versions */
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void RealFFTf1xSinCosTableVBR16(fft_type *,HFFT);
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void InverseRealFFTf1xSinCosTableVBR16(fft_type *,HFFT);
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void ReorderToTime1xSinCosTableVBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq1xSinCosTableVBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void RealFFTf4xSinCosTableVBR16(fft_type *,HFFT);
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void InverseRealFFTf4xSinCosTableVBR16(fft_type *,HFFT);
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void ReorderToTime4xSinCosTableVBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq4xSinCosTableVBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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/* SinCosTable BR16 versions */
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void RealFFTf1xSinCosTableBR16(fft_type *,HFFT);
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void InverseRealFFTf1xSinCosTableBR16(fft_type *,HFFT);
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void ReorderToTime1xSinCosTableBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq1xSinCosTableBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void RealFFTf4xSinCosTableBR16(fft_type *,HFFT);
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void InverseRealFFTf4xSinCosTableBR16(fft_type *,HFFT);
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void ReorderToTime4xSinCosTableBR16(HFFT hFFT, fft_type *buffer, fft_type *TimeOut);
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void ReorderToFreq4xSinCosTableBR16(HFFT hFFT, fft_type *buffer, fft_type *RealOut, fft_type *ImagOut);
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void TableUsage(int iMask);
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#ifndef M_PI
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#define M_PI 3.14159265358979323846 /* pi */
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#endif
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typedef struct {
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float mSin;
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float mCos;
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} SinCosStruct;
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class SinCosTable {
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public:
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int mSinCosTablePow;
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SinCosStruct *mSinCosTable;
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SinCosTable();
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~SinCosTable(){ delete [] mSinCosTable; };
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};
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int SmallRB(int bits, int numberBits);
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int (*SmallVRB[])(int bits);
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#endif
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