Data Structures
struct	XV_Hscaler_l2
	H Scaler Layer 2 data. More...

Hw Configuration
The following constants define the scaler HW MAX configuration
enum	XV_HSCALER_TYPE
	This typedef enumerates the Scaler Type. More...

enum	XV_HSCALER_TAPS
	This typedef enumerates the supported taps. More...

int	XV_HScalerInitialize (XV_Hscaler_l2 *InstancePtr, u16 DeviceId)
	This function initializes the core instance. More...

void	XV_HScalerStart (XV_Hscaler_l2 *InstancePtr)
	This function starts the horizontal scaler core. More...

void	XV_HScalerStop (XV_Hscaler_l2 *InstancePtr)
	This function stops the horizontal scaler core. More...

void	XV_HScalerLoadExtCoeff (XV_Hscaler_l2 InstancePtr, u16 num_phases, u16 num_taps, const short Coeff)
	This function loads user defined filter coefficients in the scaler coefficient storage. More...

int	XV_HScalerSetup (XV_Hscaler_l2 *InstancePtr, u32 HeightIn, u32 WidthIn, u32 WidthOut, u32 ColorFormatIn, u32 ColorFormatOut)
	This function configures the scaler core registers with the specified configuration parameters of the axi stream. More...

void	XV_HScalerDbgReportStatus (XV_Hscaler_l2 *InstancePtr)
	This function prints H Scaler status on the console. More...

int	XV_HScalerValidateConfig (XV_Hscaler_l2 *InstancePtr, u32 cformatIn, u32 cformatOut)
	This function checks if the given input and output color formats are valid configuration parameters for this instance. More...

#define	XV_HSCALER_MAX_H_TAPS (12)

#define	XV_HSCALER_MAX_H_PHASES (64)

#define	XV_HSCALER_MAX_LINE_WIDTH (8192)

#define	XV_HscalerIs422Enabled(InstancePtr) ((InstancePtr)->Hsc.Config.Is422Enabled)
	This macro checks if Hscaler instance is enabled for 4:2:2 processing. More...

#define	XV_HscalerIs420Enabled(InstancePtr) ((InstancePtr)->Hsc.Config.Is420Enabled)
	This macro checks if Hscaler instance is enabled for 4:2:0 processing. More...

#define	XV_HscalerIsCscEnabled(InstancePtr) ((InstancePtr)->Hsc.Config.IsCscEnabled)
	This macro checks if Hscaler instance is enabled for color space conversion. More...

Macro Definition Documentation

#define XV_HscalerIs420Enabled ( InstancePtr ) ((InstancePtr)->Hsc.Config.Is420Enabled)

This macro checks if Hscaler instance is enabled for 4:2:0 processing.

Parameters

InstancePtr is pointer to Hscaler core layer 2

Returns: Returns 1 if condition is TRUE or 0 if FALSE

Referenced by XV_HScalerDbgReportStatus(), and XV_HScalerValidateConfig().

#define XV_HscalerIs422Enabled ( InstancePtr ) ((InstancePtr)->Hsc.Config.Is422Enabled)

This macro checks if Hscaler instance is enabled for 4:2:2 processing.

Parameters

InstancePtr is pointer to Hscaler core layer 2

Returns: Returns 1 if condition is TRUE or 0 if FALSE

Referenced by XV_HScalerDbgReportStatus(), and XV_HScalerValidateConfig().

#define XV_HscalerIsCscEnabled ( InstancePtr ) ((InstancePtr)->Hsc.Config.IsCscEnabled)

This macro checks if Hscaler instance is enabled for color space conversion.

Parameters

InstancePtr is pointer to Hscaler core layer 2

Returns: Returns 1 if condition is TRUE or 0 if FALSE

Referenced by XV_HScalerDbgReportStatus(), and XV_HScalerValidateConfig().

Enumeration Type Documentation

enum XV_HSCALER_TAPS

This typedef enumerates the supported taps.

enum XV_HSCALER_TYPE

This typedef enumerates the Scaler Type.

Function Documentation

void XV_HScalerDbgReportStatus ( XV_Hscaler_l2 * InstancePtr )

This function prints H Scaler status on the console.

Parameters

InstancePtr is the instance pointer to the core instance.

Returns: None

References XV_hscaler_Config::BaseAddress, XV_hscaler::Config, XV_hscaler_Config::NumTaps, XV_hscaler_Config::PhaseShift, XV_hscaler_Config::ScalerType, XV_HscalerIs420Enabled, XV_HscalerIs422Enabled, and XV_HscalerIsCscEnabled.

int XV_HScalerInitialize	(	XV_Hscaler_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_HScalerLoadExtCoeff	(	XV_Hscaler_l2 *	InstancePtr,
		u16	num_phases,
		u16	num_taps,
		const short *	Coeff
	)

This function loads user defined filter coefficients in the scaler coefficient storage.

Parameters

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

Returns: None

References XV_hscaler::Config, and XV_hscaler_Config::PhaseShift.

int XV_HScalerSetup	(	XV_Hscaler_l2 *	InstancePtr,
		u32	HeightIn,
		u32	WidthIn,
		u32	WidthOut,
		u32	ColorFormatIn,
		u32	ColorFormatOut
	)

This function configures the scaler core registers with the specified configuration parameters of the axi stream.

Parameters

InstancePtr	is a pointer to the core instance to be worked on.
HeightIn	is the input stream height
WidthIn	is the input stream width
WidthOut	is the output stream width
ColorFormatIn	is the input stream color format
ColorFormatOut	is the output stream color format

Returns: XST_SUCCESS if the requested setup parameters are valid XST_FAILURE otherwise

References XV_hscaler::Config, XV_hscaler_Config::PixPerClk, XV_hscaler_Config::ScalerType, and XV_HScalerValidateConfig().

void XV_HScalerStart ( XV_Hscaler_l2 * InstancePtr )

This function starts the horizontal scaler core.

Parameters

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

Returns: None

void XV_HScalerStop ( XV_Hscaler_l2 * InstancePtr )

This function stops the horizontal scaler core.

Parameters

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

Returns: None

int XV_HScalerValidateConfig	(	XV_Hscaler_l2 *	InstancePtr,
		u32	cformatIn,
		u32	cformatOut
	)

This function checks if the given input and output color formats are valid configuration parameters for this instance.

Parameters

InstancePtr	is a pointer to the core instance to be worked on.
cformat	is the input stream color format
cformatOut	is the output stream color format

Returns: TRUE if the requested setup parameters are valid FALSE otherwise

References XV_HscalerIs420Enabled, XV_HscalerIs422Enabled, and XV_HscalerIsCscEnabled.

Referenced by XV_HScalerSetup().

Data Structures

Hw Configuration

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation