Functions
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...

Variables
const short	XV_hscaler_Lanczos2_taps6 [XV_HSCALER_MAX_H_PHASES][XV_HSCALER_TAPS_6]
	2D array containing precomputed filter coefficients for a 6-tap Lanczos2 horizontal scaler. More...

const short	XV_hscaler_Lanczos2_taps6 [XV_HSCALER_MAX_H_PHASES][XV_HSCALER_TAPS_6]
	2D array containing precomputed filter coefficients for a 6-tap Lanczos2 horizontal scaler. More...

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_HSCALER_CTRL_ADDR_AP_CTRL, XV_hscaler_Get_HwReg_ColorMode(), XV_hscaler_Get_HwReg_ColorModeOut(), XV_hscaler_Get_HwReg_Height(), XV_hscaler_Get_HwReg_hfltCoeff_BaseAddress(), XV_hscaler_Get_HwReg_PixelRate(), XV_hscaler_Get_HwReg_WidthIn(), XV_hscaler_Get_HwReg_WidthOut(), XV_hscaler_IsDone(), XV_hscaler_IsIdle(), XV_hscaler_IsReady(), 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

References XV_hscaler_Initialize().

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, XV_hscaler_Set_HwReg_ColorMode(), XV_hscaler_Set_HwReg_ColorModeOut(), XV_hscaler_Set_HwReg_Height(), XV_hscaler_Set_HwReg_PixelRate(), XV_hscaler_Set_HwReg_WidthIn(), XV_hscaler_Set_HwReg_WidthOut(), 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

References XV_hscaler_EnableAutoRestart(), and XV_hscaler_Start().

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

References XV_hscaler_DisableAutoRestart().

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.
cformatIn	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().

Variable Documentation

const short XV_hscaler_Lanczos2_taps6[XV_HSCALER_MAX_H_PHASES][XV_HSCALER_TAPS_6]

2D array containing precomputed filter coefficients for a 6-tap Lanczos2 horizontal scaler.

This constant array holds the coefficients for each phase of the horizontal scaling operation, using a 6-tap Lanczos2 filter. The array is indexed first by the phase (from 0 to XV_HSCALER_MAX_H_PHASES-1), and then by the tap index (from 0 to XV_HSCALER_TAPS_6-1).

These coefficients are used by the horizontal scaler hardware or software to perform high-quality image resampling with minimal artifacts.

See Also: XV_HSCALER_MAX_H_PHASES; XV_HSCALER_TAPS_6

const short XV_hscaler_Lanczos2_taps6[XV_HSCALER_MAX_H_PHASES][XV_HSCALER_TAPS_6]

2D array containing precomputed filter coefficients for a 6-tap Lanczos2 horizontal scaler.

This constant array holds the coefficients for each phase of the horizontal scaling operation, using a 6-tap Lanczos2 filter. The array is indexed first by the phase (from 0 to XV_HSCALER_MAX_H_PHASES-1), and then by the tap index (from 0 to XV_HSCALER_TAPS_6-1).

These coefficients are used by the horizontal scaler hardware or software to perform high-quality image resampling with minimal artifacts.

See Also: XV_HSCALER_MAX_H_PHASES; XV_HSCALER_TAPS_6

Functions

Variables

Function Documentation

Variable Documentation