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Whenever I try to use the ippsFFTGetSize_R_64f in order to get the size of the FFT spec, the work buffer, and the FFT initialization buffer, I have problems when I then call ippsFFTInit_R_64f.
When FFTGetSize returns the size of the FFT spec, what command do I use to allocate this space? Can I just use ippsMalloc_8u and then cast the pointer to the appropriate FFTSpec type?
In the documentation for ippsFFTInit, the following parameters are described:
ppFFTSpec: Double pointer to the FFT specification structure to be created.
pMemSpec: Pointer to the area for the FFT specification structure.
Can you describe more what these are? I know what ppFFTSpec is, but what is pMemSpec? Is this the memory address of size "int* pSizeSpec" that was returned in FFTGetSize?
Thanks
-Ryan
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If it is correlates with your previous question, please make sure you allocate enough memory buffer for your FFT order. For example, in case of order 13, you need 8192 elements buffer.
Vladimir
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"
Whenever I try to use the ippsFFTGetSize_R_64f in order to get the size of the FFT spec, the work buffer, and the FFT initialization buffer, I have problems when I then call ippsFFTInit_R_64f.
When FFTGetSize returns the size of the FFT spec, what command do I use to allocate this space? Can I just use ippsMalloc_8u and then cast the pointer to the appropriate FFTSpec type?
In the documentation for ippsFFTInit, the following parameters are described:
ppFFTSpec: Double pointer to the FFT specification structure to be created.
pMemSpec: Pointer to the area for the FFT specification structure.
Can you describe more what these are? I know what ppFFTSpec is, but what is pMemSpec? Is this the memory address of size "int* pSizeSpec" that was returned in FFTGetSize?
"
I have the same problem. Can anyone help me and describe these functions?
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Vladimir
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