ImageIFFT

Functions
VPIStatus	vpiCreateImageIFFT (VPIStream stream, uint32_t outputWidth, uint32_t outputHeight, const VPIImageType inType, const VPIImageType outType, VPIPayload *payload)
	Creates payload for vpiSubmitImageIFFT. More...
VPIStatus	vpiSubmitImageIFFT (VPIPayload payload, VPIImage input, VPIImage output, uint32_t flags)
	Runs IFFT on single image. More...

Image IFFT flags
#define	VPI_IFFT_DENORMALIZED   (1u)
	Do not normalize the output. More...

Detailed Description

Fast Fourier Transform

Macro Definition Documentation

VPI_IFFT_DENORMALIZED

#define VPI_IFFT_DENORMALIZED   (1u)

#include <vpi/algo/ImageIFFT.h>

Do not normalize the output.

By default the IFFT output is divided by the number of input elements (pixels). Not doing that by specifiying this flag when calling vpiSubmitImageIFFT usually leads to faster execution.

Definition at line 95 of file ImageIFFT.h.

Function Documentation

vpiCreateImageIFFT()

VPIStatus vpiCreateImageIFFT	(	VPIStream	stream,
		uint32_t	outputWidth,
		uint32_t	outputHeight,
		const VPIImageType	inType,
		const VPIImageType	outType,
		VPIPayload *	payload
	)

#include <vpi/algo/ImageIFFT.h>

Creates payload for vpiSubmitImageIFFT.

Parameters

stream	[in] a stream handle
outputWidth	[in] width of output image
outputHeight	[in] height of output image
inType	[in] input image type
outType	[in] output image type
payload	[out] pointer to a payload handle

Returns

an error code on failure else VPI_SUCCESS

vpiSubmitImageIFFT()

VPIStatus vpiSubmitImageIFFT	(	VPIPayload	payload,
		VPIImage	input,
		VPIImage	output,
		uint32_t	flags
	)

#include <vpi/algo/ImageIFFT.h>

Runs IFFT on single image.

Parameters

payload	[in] payload created with vpiSubmitImageIFFT
input	[in] input image
output	[in] output image
flags	[in] control flags, 0 for default processing, where output scaled.

Returns

an error code on failure else VPI_SUCCESS