RGBToYUV

RGB to YUV color conversion. More...

Functions
NppStatus	nppiRGBToYUV_8u_C3R_Ctx (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppStreamContext nppStreamCtx)
	3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_C3R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI)
NppStatus	nppiRGBToYUV_8u_AC4R_Ctx (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppStreamContext nppStreamCtx)
	4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed YUV color conversion with alpha, not affecting alpha. More...
NppStatus	nppiRGBToYUV_8u_AC4R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI)
NppStatus	nppiRGBToYUV_8u_P3R_Ctx (const Npp8u *const pSrc[3], int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI, NppStreamContext nppStreamCtx)
	3 channel 8-bit unsigned planar RGB to 3 channel 8-bit unsigned planar YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_P3R (const Npp8u *const pSrc[3], int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI)
NppStatus	nppiRGBToYUV_8u_C3P3R_Ctx (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI, NppStreamContext nppStreamCtx)
	3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned planar YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_C3P3R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI)
NppStatus	nppiRGBToYUV_8u_AC4P4R_Ctx (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[4], int nDstStep, NppiSize oSizeROI, NppStreamContext nppStreamCtx)
	4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned planar YUV color conversion with alpha. More...
NppStatus	nppiRGBToYUV_8u_AC4P4R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[4], int nDstStep, NppiSize oSizeROI)

Detailed Description

RGB to YUV color conversion.

Here is how NPP converts gamma corrected RGB or BGR to YUV. For digital RGB values in the range [0..255], Y has the range [0..255], U varies in the range [-112..+112], and V in the range [-157..+157]. To fit in the range of [0..255], a constant value of 128 is added to computed U and V values, and V is then saturated.

*  Npp32f nY =  0.299F * R + 0.587F * G + 0.114F * B; 
*  Npp32f nU = (0.492F * ((Npp32f)nB - nY)) + 128.0F;
*  Npp32f nV = (0.877F * ((Npp32f)nR - nY)) + 128.0F;
*  if (nV > 255.0F) 
*      nV = 255.0F;
*  

Function Documentation

NppStatus nppiRGBToYUV_8u_AC4P4R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[4],
		int	nDstStep,
		NppiSize	oSizeROI
	)

NppStatus nppiRGBToYUV_8u_AC4P4R_Ctx	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[4],
		int	nDstStep,
		NppiSize	oSizeROI,
		NppStreamContext	nppStreamCtx
	)

4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned planar YUV color conversion with alpha.

images.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_AC4R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI
	)

NppStatus nppiRGBToYUV_8u_AC4R_Ctx	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppStreamContext	nppStreamCtx
	)

4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed YUV color conversion with alpha, not affecting alpha.

images.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_C3P3R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI
	)

NppStatus nppiRGBToYUV_8u_C3P3R_Ctx	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI,
		NppStreamContext	nppStreamCtx
	)

3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned planar YUV color conversion.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_C3R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI
	)

NppStatus nppiRGBToYUV_8u_C3R_Ctx	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppStreamContext	nppStreamCtx
	)

3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed YUV color conversion.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_P3R	(	const Npp8u *const	pSrc[3],
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI
	)

NppStatus nppiRGBToYUV_8u_P3R_Ctx	(	const Npp8u *const	pSrc[3],
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI,
		NppStreamContext	nppStreamCtx
	)

3 channel 8-bit unsigned planar RGB to 3 channel 8-bit unsigned planar YUV color conversion.

Parameters

pSrc	Source-Planar-Image Pointer Array.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes