Count Zero Crossings

Functions
NppStatus	nppsZeroCrossingGetBufferSize_16s32f (int nLength, int *hpBufferSize)
	Device-buffer size (in bytes) for nppsZeroCrossing_16s32f. More...
NppStatus	nppsZeroCrossing_16s32f (const Npp16s *pSrc, int nLength, Npp32f *pValZC, NppsZCType tZCType, Npp8u *pDeviceBuffer)
	16-bit signed short integer zero crossing method, return value is 32-bit floating point. More...
NppStatus	nppsZeroCrossingGetBufferSize_32f (int nLength, int *hpBufferSize)
	Device-buffer size (in bytes) for nppsZeroCrossing_32f. More...
NppStatus	nppsZeroCrossing_32f (const Npp32f *pSrc, int nLength, Npp32f *pValZC, NppsZCType tZCType, Npp8u *pDeviceBuffer)
	32-bit floating-point zero crossing method, return value is 32-bit floating point. More...

Detailed Description

Function Documentation

NppStatus nppsZeroCrossing_16s32f	(	const Npp16s *	pSrc,
		int	nLength,
		Npp32f *	pValZC,
		NppsZCType	tZCType,
		Npp8u *	pDeviceBuffer
	)

16-bit signed short integer zero crossing method, return value is 32-bit floating point.

Parameters

pSrc	Source Signal Pointer.
nLength	Signal Length.
pValZC	Pointer to the output result.
tZCType	Type of the zero crossing measure: nppZCR, nppZCXor or nppZCC.
pDeviceBuffer	Pointer to the required device memory allocation, Scratch Buffer and Host Pointer. Use nppsZeroCrossingGetBufferSize_16s32f to determine the minium number of bytes required.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsZeroCrossing_32f	(	const Npp32f *	pSrc,
		int	nLength,
		Npp32f *	pValZC,
		NppsZCType	tZCType,
		Npp8u *	pDeviceBuffer
	)

32-bit floating-point zero crossing method, return value is 32-bit floating point.

Parameters

pSrc	Source Signal Pointer.
nLength	Signal Length.
pValZC	Pointer to the output result.
tZCType	Type of the zero crossing measure: nppZCR, nppZCXor or nppZCC.
pDeviceBuffer	Pointer to the required device memory allocation, Scratch Buffer and Host Pointer. Use nppsZeroCrossingGetBufferSize_32f to determine the minium number of bytes required.

Returns

Signal Data Related Error Codes, Length Related Error Codes.

NppStatus nppsZeroCrossingGetBufferSize_16s32f	(	int	nLength,
		int *	hpBufferSize
	)

Device-buffer size (in bytes) for nppsZeroCrossing_16s32f.

Parameters

nLength	Signal Length.
hpBufferSize	Required buffer size. Important: hpBufferSize is a host pointer.

Returns

NPP_SUCCESS

NppStatus nppsZeroCrossingGetBufferSize_32f	(	int	nLength,
		int *	hpBufferSize
	)

Device-buffer size (in bytes) for nppsZeroCrossing_32f.

Parameters

nLength	Signal Length.
hpBufferSize	Required buffer size. Important: hpBufferSize is a host pointer.

Returns

NPP_SUCCESS