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VampPluginSDK Chris@6:  2.7 Chris@6:
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Chris@6: Public Member Functions | Chris@6: Private Attributes | Chris@6: List of all members
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Vamp::FFTComplex Class Reference
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A simple FFT implementation provided for convenience of plugin authors. Chris@6: More...

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#include <FFT.h>

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Chris@6: Public Member Functions

 FFTComplex (unsigned int n)
 Prepare to calculate transforms of size n. More...
 
 ~FFTComplex ()
 
void forward (const double *ci, double *co)
 Calculate a forward transform of size n. More...
 
void inverse (const double *ci, double *co)
 Calculate an inverse transform of size n. More...
 
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Chris@6: Private Attributes

D * m_d
 
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Detailed Description

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A simple FFT implementation provided for convenience of plugin authors.

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This class provides double-precision complex-complex transforms.

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Note: If the SDK has been compiled with the SINGLE_PRECISION_FFT flag, then all FFTs will use single precision internally. The default is double precision. The API uses doubles in either case.

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The forward transform is unscaled; the inverse transform is scaled by 1/n.

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Definition at line 109 of file FFT.h.

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Constructor & Destructor Documentation

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◆ FFTComplex()

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Vamp::FFTComplex::FFTComplex (unsigned int n)
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Prepare to calculate transforms of size n.

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n must be a multiple of 2.

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◆ ~FFTComplex()

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Vamp::FFTComplex::~FFTComplex ()
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Member Function Documentation

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◆ forward()

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void Vamp::FFTComplex::forward (const double * ci,
double * co 
)
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Calculate a forward transform of size n.

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ci must point to the interleaved complex input data of size n (that is, 2n doubles in total).

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co must point to enough space to receive an interleaved complex output array of size n (that is, 2n doubles in total).

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◆ inverse()

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void Vamp::FFTComplex::inverse (const double * ci,
double * co 
)
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Calculate an inverse transform of size n.

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ci must point to an interleaved complex input array of size n (that is, 2n doubles in total).

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co must point to enough space to receive the interleaved complex output data of size n (that is, 2n doubles in total). The output is scaled by 1/n.

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Member Data Documentation

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◆ m_d

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D* Vamp::FFTComplex::m_d
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Definition at line 144 of file FFT.h.

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The documentation for this class was generated from the following file: Chris@6:
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