Overview

Data Structures
struct	XV_Vcresampler_l2
	V Chroma Resampler Layer 2 data. More...

Hw Configuration
The following constants define the vert. resampler HW MAX configuration
enum	XV_VCRESAMPLER_TAPS
	This typedef enumerates the supported taps. More...
enum	XV_VCRESAMPLER_CONVERSION
	This typedef enumerates the conversion type. More...
enum	XV_VCRESAMPLER_TYPE
	This typedef enumerates the resampling algorithm. More...
int	XV_VcrsmplInitialize (XV_Vcresampler_l2 *InstancePtr, u16 DeviceId)
	This function initializes the core instance. More...
void	XV_VCrsmplStart (XV_Vcresampler_l2 *InstancePtr)
	This function starts the Chroma resampler core. More...
void	XV_VCrsmplStop (XV_Vcresampler_l2 *InstancePtr)
	This function stops the Chroma resampler core. More...
void	XV_VCrsmplLoadDefaultCoeff (XV_Vcresampler_l2 *InstancePtr)
	This function loads default filter coefficients in the chroma resampler coefficient storage based on the selected TAP configuration. More...
void	XV_VCrsmplrLoadExtCoeff (XV_Vcresampler_l2 *InstancePtr, u16 num_taps, const short *Coeff)
	This function loads user defined filter coefficients in the horiz. More...
void	XV_VCrsmplSetActiveSize (XV_Vcresampler_l2 *InstancePtr, u32 width, u32 height)
	This function configures the Chroma resampler active resolution. More...
void	XV_VCrsmplSetFormat (XV_Vcresampler_l2 *InstancePtr, XVidC_ColorFormat formatIn, XVidC_ColorFormat formatOut)
	This function configures the Chroma resampler for the required format conversion. More...
void	XV_VCrsmplDbgReportStatus (XV_Vcresampler_l2 *InstancePtr)
	This function prints Chroma Resampler status on the console. More...
#define	XV_VCRSMPLR_MAX_TAPS   (10)
#define	XV_VCRSMPLR_MAX_PHASES   (2)

Enumeration Type Documentation

enum XV_VCRESAMPLER_CONVERSION

This typedef enumerates the conversion type.

enum XV_VCRESAMPLER_TAPS

This typedef enumerates the supported taps.

enum XV_VCRESAMPLER_TYPE

This typedef enumerates the resampling algorithm.

Function Documentation

void XV_VCrsmplDbgReportStatus

(

XV_Vcresampler_l2 *

InstancePtr

)

This function prints Chroma Resampler status on the console.

Parameters

InstancePtr

is a pointer to the core instance to be worked on.

Returns

None

References XV_vcresampler_Config::BaseAddress, XV_vcresampler::Config, XV_vcresampler_Config::NumTaps, and XV_vcresampler_Config::ResamplingType.

int XV_VcrsmplInitialize	(	XV_Vcresampler_l2 *	InstancePtr,
		u16	DeviceId
	)

This function initializes the core instance.

Parameters

InstancePtr	is a pointer to core instance to be worked upon
DeviceId	is instance id of the core

Returns

XST_SUCCESS if device is found and initialized XST_DEVICE_NOT_FOUND if device is not found

void XV_VCrsmplLoadDefaultCoeff

(

XV_Vcresampler_l2 *

InstancePtr

)

This function loads default filter coefficients in the chroma resampler coefficient storage based on the selected TAP configuration.

Parameters

InstancePtr

is a pointer to the core instance to be worked on.

Returns

None

References XV_vcresampler::Config, XV_vcresampler_Config::NumTaps, and XV_VCrsmplrLoadExtCoeff().

void XV_VCrsmplrLoadExtCoeff	(	XV_Vcresampler_l2 *	InstancePtr,
		u16	num_taps,
		const short *	Coeff
	)

This function loads user defined filter coefficients in the horiz.

chroma resampler coefficient storage

Parameters

InstancePtr	is a pointer to the core instance to be worked on.
num_taps	is the number of taps
Coeff	is a pointer to user defined filter coefficients table

Returns

None

References XV_vcresampler::Config, and XV_vcresampler_Config::NumTaps.

Referenced by XV_VCrsmplLoadDefaultCoeff().

void XV_VCrsmplSetActiveSize	(	XV_Vcresampler_l2 *	InstancePtr,
		u32	width,
		u32	height
	)

This function configures the Chroma resampler active resolution.

Parameters

InstancePtr	is a pointer to the core instance to be worked on.
width	is the active frame width
height	is the active frame height

Returns

None

void XV_VCrsmplSetFormat	(	XV_Vcresampler_l2 *	InstancePtr,
		XVidC_ColorFormat	formatIn,
		XVidC_ColorFormat	formatOut
	)

This function configures the Chroma resampler for the required format conversion.

Parameters

InstancePtr	is a pointer to the core instance to be worked on.
formatIn	is the input chroma format
formatOut	is required chroma format

Returns

None

References XV_vcresampler::Config, and XV_vcresampler_Config::ResamplingType.

void XV_VCrsmplStart

(

XV_Vcresampler_l2 *

InstancePtr

)

This function starts the Chroma resampler core.

Parameters

InstancePtr

is a pointer to the core instance to be worked on.

Returns

None

void XV_VCrsmplStop

(

XV_Vcresampler_l2 *

InstancePtr

)

This function stops the Chroma resampler core.

Parameters

InstancePtr

is a pointer to the core instance to be worked on.

Returns

None