FFTLIB_fft1dBatched_i16sc_c16sc_o16sc

Introduction

Kernel for computing batched 16-bit integer FFT.

• The size of data is required to be a power of 2.
• The kernel requires application to provide a pre-generated twiddle factors along with the input data.

Functions
FFTLIB_STATUS	FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_init (int16_t *pX, FFTLIB_bufParams1D_t *bufParamsX, int16_t *pW, FFTLIB_bufParams1D_t *bufParamsW, int16_t *pY, FFTLIB_bufParams1D_t *bufParamsY, uint32_t *pShift, FFTLIB_bufParams1D_t *bufParamsShift, uint32_t numPoints, uint32_t numChannels, void *pBlock)
	This function should be called before the FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel function is called. This function takes care of any one-time operations such as setting up the configuration for the streaming engine. More...
FFTLIB_STATUS	FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel (int16_t *pX, FFTLIB_bufParams1D_t *bufParamsX, int16_t *pW, FFTLIB_bufParams1D_t *bufParamsW, int16_t *pY, FFTLIB_bufParams1D_t *bufParamsY, uint32_t *pShift, FFTLIB_bufParams1D_t *bufParamsShift, uint32_t numPoints, uint32_t numChannels, void *pBlock)
	This function is the main kernel compute function. More...
FFTLIB_STATUS	FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_checkParams (int16_t *pX, FFTLIB_bufParams1D_t *bufParamsX, int16_t *pW, FFTLIB_bufParams1D_t *bufParamsW, int16_t *pY, FFTLIB_bufParams1D_t *bufParamsY, uint32_t *pShift, FFTLIB_bufParams1D_t *bufParamsShift, uint32_t numPoints, uint32_t numChannels, void *pBlock)
	This function checks the validity of the parameters passed to FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_init and FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel functions. More...

Macros
#define	FFTLIB_FFT1DBATCHED_I16SC_C16SC_O16SC_PBLOCK_SIZE   (13 * SE_PARAM_SIZE)
	Macro to define the array size for storing SE/SA parameters. More...

Macro Definition Documentation

FFTLIB_FFT1DBATCHED_I16SC_C16SC_O16SC_PBLOCK_SIZE

#define FFTLIB_FFT1DBATCHED_I16SC_C16SC_O16SC_PBLOCK_SIZE   (13 * SE_PARAM_SIZE)

Macro to define the array size for storing SE/SA parameters.

Definition at line 105 of file FFTLIB_fft1dBatched_i16sc_c16sc_o16sc.h.

Function Documentation

FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_init()

FFTLIB_STATUS FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_init	(	int16_t *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		int16_t *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		int16_t *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		uint32_t *	pShift,
		FFTLIB_bufParams1D_t *	bufParamsShift,
		uint32_t	numPoints,
		uint32_t	numChannels,
		void *	pBlock
	)

This function should be called before the FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel function is called. This function takes care of any one-time operations such as setting up the configuration for the streaming engine.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[in]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional information of output buffer
[in]	pShift	: Pointer to buffer with shift value at every stage of FFT
[in]	bufParamsShift	: Pointer to the structure containing dimensional information of shift buffer
[in]	numPoints	: FFT size
[in]	numChannels	: Batch size of FFT
[out]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

Definition at line 88 of file c71/FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_ci.cpp.

FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel()

FFTLIB_STATUS FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel	(	int16_t *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		int16_t *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		int16_t *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		uint32_t *	pShift,
		FFTLIB_bufParams1D_t *	bufParamsShift,
		uint32_t	numPoints,
		uint32_t	numChannels,
		void *	pBlock
	)

This function is the main kernel compute function.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[out]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional information of output buffer
[in]	pShift	: Pointer to buffer with shift value at every stage of FFT
[in]	bufParamsShift	: Pointer to the structure containing dimensional information of shift buffer
[in]	numPoints	: FFT size
[in]	numChannels	: Batch size of FFT
[in]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

#define PACK_HIGH_INT16( V1, V2) __vpermoow_yvvv( vXPermCtrl2, c7x::as_uchar_vec( V1), c7x::as_uchar_vec( V2))

Definition at line 369 of file c71/FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_ci.cpp.

FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_checkParams()

FFTLIB_STATUS FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_checkParams	(	int16_t *	pX,
		FFTLIB_bufParams1D_t *	bufParamsX,
		int16_t *	pW,
		FFTLIB_bufParams1D_t *	bufParamsW,
		int16_t *	pY,
		FFTLIB_bufParams1D_t *	bufParamsY,
		uint32_t *	pShift,
		FFTLIB_bufParams1D_t *	bufParamsShift,
		uint32_t	numPoints,
		uint32_t	numChannels,
		void *	pBlock
	)

This function checks the validity of the parameters passed to FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_init and FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_kernel functions.

Parameters

[in]	pX	: Pointer to buffer with input data
[in]	bufParamsX	: Pointer to the structure containing dimensional information of input buffer
[in]	pW	: Pointer to buffer with twiddle factors
[in]	bufParamsW	: Pointer to the structure containing dimensional information of twiddle factor buffer
[in]	pY	: Pointer to buffer with output data
[in]	bufParamsY	: Pointer to the structure containing dimensional information of output buffer
[in]	pShift	: Pointer to buffer with shift value at every stage of FFT
[in]	bufParamsShift	: Pointer to the structure containing dimensional information of shift buffer
[in]	numPoints	: FFT size
[in]	numChannels	: Batch size of FFT
[in]	pBlock	: Pointer to the buffer that will hold the streaming engine parameters

Returns

Status value indicating success or failure. Refer to FFTLIB_STATUS.

Definition at line 2326 of file c71/FFTLIB_fft1dBatched_i16sc_c16sc_o16sc_ci.cpp.