Overview

Data Structures
struct	XV_Hcresampler_l2
	H Chroma Resampler Layer 2 data. More...

Hw Configuration
The following constants define the horiz. resampler HW MAX configuration
enum	XV_HCRESAMPLER_TAPS
	This typedef enumerates the supported taps. More...
enum	XV_HCRESAMPLER_CONVERSION
	This typedef enumerates the conversion type. More...
enum	XV_HCRESAMPLER_TYPE
	This typedef enumerates the resampling algorithm. More...
int	XV_HcrsmplInitialize (XV_Hcresampler_l2 *InstancePtr, u16 DeviceId)
	This function initializes the core instance. More...
void	XV_HCrsmplStart (XV_Hcresampler_l2 *InstancePtr)
	This function starts the Chroma resampler core. More...
void	XV_HCrsmplStop (XV_Hcresampler_l2 *InstancePtr)
	This function stops the Chroma resampler core. More...
void	XV_HCrsmplLoadDefaultCoeff (XV_Hcresampler_l2 *InstancePtr)
	This function loads default filter coefficients in the chroma resampler coefficient storage based on the selected TAP configuration. More...
void	XV_HCrsmplrLoadExtCoeff (XV_Hcresampler_l2 *InstancePtr, u16 num_taps, const short *Coeff)
	This function loads user defined filter coefficients in the horiz. More...
void	XV_HCrsmplSetActiveSize (XV_Hcresampler_l2 *InstancePtr, u32 width, u32 height)
	This function configures the Chroma resampler active resolution. More...
void	XV_HCrsmplSetFormat (XV_Hcresampler_l2 *InstancePtr, XVidC_ColorFormat formatIn, XVidC_ColorFormat formatOut)
	This function configures the Chroma resampler for the required format conversion. More...
void	XV_HCrsmplDbgReportStatus (XV_Hcresampler_l2 *InstancePtr)
	This function prints Chroma Resampler status on the console. More...
#define	XV_HCRSMPLR_MAX_TAPS   (10)
#define	XV_HCRSMPLR_MAX_PHASES   (2)

Enumeration Type Documentation

enum XV_HCRESAMPLER_CONVERSION

This typedef enumerates the conversion type.

enum XV_HCRESAMPLER_TAPS

This typedef enumerates the supported taps.

enum XV_HCRESAMPLER_TYPE

This typedef enumerates the resampling algorithm.

Function Documentation

void XV_HCrsmplDbgReportStatus

(

XV_Hcresampler_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_hcresampler_Config::BaseAddress, XV_hcresampler::Config, XV_hcresampler_Config::NumTaps, and XV_hcresampler_Config::ResamplingType.

int XV_HcrsmplInitialize	(	XV_Hcresampler_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_HCrsmplLoadDefaultCoeff

(

XV_Hcresampler_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_hcresampler::Config, XV_hcresampler_Config::NumTaps, and XV_HCrsmplrLoadExtCoeff().

void XV_HCrsmplrLoadExtCoeff	(	XV_Hcresampler_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_hcresampler::Config, and XV_hcresampler_Config::NumTaps.

Referenced by XV_HCrsmplLoadDefaultCoeff().

void XV_HCrsmplSetActiveSize	(	XV_Hcresampler_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_HCrsmplSetFormat	(	XV_Hcresampler_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_hcresampler::Config, and XV_hcresampler_Config::ResamplingType.

void XV_HCrsmplStart

(

XV_Hcresampler_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_HCrsmplStop

(

XV_Hcresampler_l2 *

InstancePtr

)

This function stops the Chroma resampler core.

Parameters

InstancePtr

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

Returns

None