xvprocss.c File Reference

Overview

Please see xvprocss.h for more details of the driver.

MODIFICATION HISTORY:

Ver   Who    Date     Changes
----- ---- -------- -------------------------------------------------------
1.00  rco   08/28/15   Initial Release

VDMA Alignment required step size
The following constants define various Zoom/Pip window horizontal step sizes that keeps the VDMA access aligned to aximm interface width, based on Pixels/Clock and Color Depth of the configured subsystem. This is required as current version of VDMA does not support DRE if interface width is >64bits. Software has to align the hsize and stride for all possible configurations supported by the subsystem. Current subsystem version supports the following Number of components = 3 (Fixed) Pixels/Clock = 1, 2, 4 Color Depth = 8, 10, 12, 16 (4 variations)
void	XVprocSs_ReportSubsystemCoreInfo (XVprocSs *InstancePtr)
void	XVprocSs_SetUserTimerHandler (XVprocSs *InstancePtr, XVidC_DelayHandler CallbackFunc, void *CallbackRef)
void	XVprocSs_SetFrameBufBaseaddr (XVprocSs *InstancePtr, u32 addr)
int	XVprocSs_CfgInitialize (XVprocSs *InstancePtr, XVprocSs_Config *CfgPtr, u32 EffectiveAddr)
void	XVprocSs_Start (XVprocSs *InstancePtr)
void	XVprocSs_Stop (XVprocSs *InstancePtr)
void	XVprocSs_Reset (XVprocSs *InstancePtr)
int	XVprocSs_SetVidStreamIn (XVprocSs *InstancePtr, const XVidC_VideoStream *StrmIn)
int	XVprocSs_SetVidStreamOut (XVprocSs *InstancePtr, const XVidC_VideoStream *StrmOut)
int	XVprocSs_SetStreamResolution (XVidC_VideoStream *StreamPtr, const XVidC_VideoMode VmId)
void	XVprocSs_UpdateZoomPipWindow (XVprocSs *InstancePtr)
void	XVprocSs_SetZoomPipWindow (XVprocSs *InstancePtr, XVprocSs_Win mode, XVidC_VideoWindow *win)
void	XVprocSs_GetZoomPipWindow (XVprocSs *InstancePtr, XVprocSs_Win mode, XVidC_VideoWindow *win)
void	XVprocSs_SetZoomMode (XVprocSs *InstancePtr, u8 OnOff)
void	XVprocSs_SetPipMode (XVprocSs *InstancePtr, u8 OnOff)
int	XVprocSs_SetSubsystemConfig (XVprocSs *InstancePtr)
void	XVprocSs_ReportSubsystemConfig (XVprocSs *InstancePtr)
s32	XVprocSs_GetPictureBrightness (XVprocSs *InstancePtr)
void	XVprocSs_SetPictureBrightness (XVprocSs *InstancePtr, s32 NewValue)
s32	XVprocSs_GetPictureContrast (XVprocSs *InstancePtr)
void	XVprocSs_SetPictureContrast (XVprocSs *InstancePtr, s32 NewValue)
s32	XVprocSs_GetPictureSaturation (XVprocSs *InstancePtr)
void	XVprocSs_SetPictureSaturation (XVprocSs *InstancePtr, s32 NewValue)
s32	XVprocSs_GetPictureGain (XVprocSs *InstancePtr, XVprocSs_ColorChannel ChId)
void	XVprocSs_SetPictureGain (XVprocSs *InstancePtr, XVprocSs_ColorChannel ChId, s32 NewValue)
XVidC_ColorStd	XVprocSs_GetPictureColorStdIn (XVprocSs *InstancePtr)
XVidC_ColorStd	XVprocSs_GetPictureColorStdOut (XVprocSs *InstancePtr)
void	XVprocSs_SetPictureColorStdIn (XVprocSs *InstancePtr, XVidC_ColorStd NewVal)
void	XVprocSs_SetPictureColorStdOut (XVprocSs *InstancePtr, XVidC_ColorStd NewVal)
XVidC_ColorRange	XVprocSs_GetPictureColorRange (XVprocSs *InstancePtr)
void	XVprocSs_SetPictureColorRange (XVprocSs *InstancePtr, XVidC_ColorRange NewVal)
int	XVprocSs_SetPictureActiveWindow (XVprocSs *InstancePtr, XVidC_VideoWindow *Win)
void	XVprocSs_SetPIPBackgroundColor (XVprocSs *InstancePtr, XLboxColorId ColorId)
void	XVprocSs_LoadScalerCoeff (XVprocSs *InstancePtr, u32 CoreId, u16 num_phases, u16 num_taps, const short *Coeff)
void	XVprocSs_LoadChromaResamplerCoeff (XVprocSs *InstancePtr, u32 CoreId, u16 num_taps, const short *Coeff)
void	XVprocSs_ReportSubcoreStatus (XVprocSs *InstancePtr, u32 SubcoreId)

Macro Definition Documentation

#define RESET_MASK_IP_AXIMM   (0x01)

Reset line for AXI-MM blocks.

Referenced by XVprocSs_CfgInitialize().

#define RESET_MASK_IP_AXIS   (0x02)

Reset line for all video IP blocks.

Referenced by XVprocSs_Reset().

#define RESET_MASK_VIDEO_IN   (0x01)

Reset line going out of subsystem.

Referenced by XVprocSs_Start().

Function Documentation

int XVprocSs_CfgInitialize	(	XVprocSs *	InstancePtr,
		XVprocSs_Config *	CfgPtr,
		u32	EffectiveAddr
	)

This function initializes the video subsystem and included sub-cores.

This function must be called prior to using the subsystem. Initialization includes setting up the instance data for top level as well as all included sub-core therein, and ensuring the hardware is in a known stable state.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
CfgPtr	points to the configuration structure associated with the subsystem instance.
EffectiveAddr	is the base address of the device. If address translation is being used, then this parameter must reflect the virtual base address. Otherwise, the physical address should be used.

Returns

XST_SUCCESS if initialization is successful else XST_FAILURE

References XVprocSs_Config::BaseAddress, XVprocSs_Config::ColorDepth, XVprocSs::Config, XVprocSs::CscPtr, XVprocSs::CtxtData, XVprocSs_ContextData::DeintBufAddr, XVprocSs::DeintPtr, XVprocSs::FrameBufBaseaddr, XVprocSs::HcrsmplrPtr, XVprocSs::HscalerPtr, XVprocSs::IsReady, XVprocSs::LboxPtr, XVprocSs_Config::MaxHeight, XVprocSs_Config::MaxWidth, XVprocSs_Config::NumVidComponents, RESET_MASK_IP_AXIMM, XVprocSs::RouterPtr, XVprocSs::RstAximmPtr, XVprocSs::RstAxisPtr, XVprocSs::VcrsmplrInPtr, XVprocSs::VcrsmplrOutPtr, XVprocSs::VdmaPtr, XVprocSs::VscalerPtr, XVprocSs_GetSubsystemTopology, XVprocSs_Reset(), XVprocSs_SubcoreInitCsc(), XVprocSs_SubcoreInitDeinterlacer(), XVprocSs_SubcoreInitHCrsmplr(), XVprocSs_SubcoreInitHScaler(), XVprocSs_SubcoreInitLetterbox(), XVprocSs_SubcoreInitResetAximm(), XVprocSs_SubcoreInitResetAxis(), XVprocSs_SubcoreInitRouter(), XVprocSs_SubcoreInitVCrsmpleIn(), XVprocSs_SubcoreInitVCrsmpleOut(), XVprocSs_SubcoreInitVdma(), and XVprocSs_SubcoreInitVScaler().

s32 XVprocSs_GetPictureBrightness

(

XVprocSs *

InstancePtr

)

This function returns picture brighntess setting.

Parameters

InstancePtr

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

Returns

current value (0-100), if csc subcore is included

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

XVidC_ColorRange XVprocSs_GetPictureColorRange

(

XVprocSs *

InstancePtr

)

This function returns picture color range for output.

Parameters

InstancePtr

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

Returns

Current set output range, if csc core is included

• XVIDC_CR_16_235
• XVIDC_CR_16_240

• XVIDC_CR_0_255 Else XVIDC_CR_UNKNOWN_RANGE

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

XVidC_ColorStd XVprocSs_GetPictureColorStdIn

(

XVprocSs *

InstancePtr

)

This function returns picture color standard setting for input.

Parameters

InstancePtr

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

Returns

Current set color standard, if csc core is included

• XVIDC_BT_2020
• XVIDC_BT_709
• XVIDC_BT_601 Else XVIDC_BT_UNKNOWN

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

XVidC_ColorStd XVprocSs_GetPictureColorStdOut

(

XVprocSs *

InstancePtr

)

This function returns picture color standard setting for output.

Parameters

InstancePtr

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

Returns

Current set color standard, if csc core is included

• XVIDC_BT_2020
• XVIDC_BT_709
• XVIDC_BT_601 Else XVIDC_BT_UNKNOWN

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

s32 XVprocSs_GetPictureContrast

(

XVprocSs *

InstancePtr

)

This function returns picture contrast setting.

Parameters

InstancePtr

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

Returns

current value (0-100), if csc subcore is included

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

s32 XVprocSs_GetPictureGain	(	XVprocSs *	InstancePtr,
		XVprocSs_ColorChannel	ChId
	)

This function returns picture gain setting for the specified color channel.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
ChId	is the color channel id for which gain is requested

Returns

current value (0-100), if csc subcore is included

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

s32 XVprocSs_GetPictureSaturation

(

XVprocSs *

InstancePtr

)

This function returns picture saturation setting.

Parameters

InstancePtr

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

Returns

current value (0-100), if csc subcore is included

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_GetZoomPipWindow	(	XVprocSs *	InstancePtr,
		XVprocSs_Win	mode,
		XVidC_VideoWindow *	win
	)

This function reads the user defined Zoom/Pip window from scratch pad memory.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
mode	is feature (PIP or ZOOM) whose window coordinates are to be retrieved
win	is structure that will contain read window coordinates and size

Note

For Zoom mode RD client window is read from scratch pad memory For Pip mode WR client window is read from scratch pad memory This function is not applicable in Subsystem Stream Mode Configuration

References XVprocSs::CtxtData, XVprocSs_ContextData::RdWindow, XVprocSs_ContextData::WrWindow, and XVprocSs_IsConfigModeMax.

Referenced by XVprocSs_ReportSubsystemConfig().

void XVprocSs_LoadChromaResamplerCoeff	(	XVprocSs *	InstancePtr,
		u32	CoreId,
		u16	num_taps,
		const short *	Coeff
	)

This function enables user to load external filter coefficients for Chroma Resampler cores, independently for H & V.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
CoreId	is the resampler core to be worked on XVPROCSS_SUBCORE_CR_H XVPROCSS_SUBCORE_CR_V_IN XVPROCSS_SUBCORE_CR_V_OUT
num_taps	is the taps of the resampler hw instance
Coeff	is the pointer to the filter table to be loaded

Returns

None

Note

Applicable only if Resampler cores are included in the subsystem

References XVprocSs::HcrL2Reg, XVprocSs::HcrsmplrPtr, XVprocSs::VcrInL2Reg, XVprocSs::VcrOutL2Reg, XVprocSs::VcrsmplrInPtr, and XVprocSs::VcrsmplrOutPtr.

void XVprocSs_LoadScalerCoeff	(	XVprocSs *	InstancePtr,
		u32	CoreId,
		u16	num_phases,
		u16	num_taps,
		const short *	Coeff
	)

This function enables user to load external filter coefficients for Scaler cores, independently for H & V.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
CoreId	is the Scaler core to be worked on XVPROCSS_SUBCORE_SCALER_V XVPROCSS_SUBCORE_SCALER_H
num_phases	is the number of phases supported by Scaler
num_taps	is the effective taps to be used by Scaler
Coeff	is the pointer to the filter table to be loaded

Returns

None

Note

Applicable only if Scaler cores are included in the subsystem

References XVprocSs::HscalerPtr, XVprocSs::HscL2Reg, XVprocSs::VscalerPtr, and XVprocSs::VscL2Reg.

void XVprocSs_ReportSubcoreStatus	(	XVprocSs *	InstancePtr,
		u32	SubcoreId
	)

This function reports the status of specified sub-core.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
SubcoreId	is the subcore index from the below list XVPROCSS_SUBCORE_SCALER_V XVPROCSS_SUBCORE_SCALER_H XVPROCSS_SUBCORE_VDMA XVPROCSS_SUBCORE_LBOX XVPROCSS_SUBCORE_CR_H XVPROCSS_SUBCORE_CR_V_IN XVPROCSS_SUBCORE_CR_V_OUT XVPROCSS_SUBCORE_CSC XVPROCSS_SUBCORE_DEINT

Returns

None

References XVprocSs::CscPtr, XVprocSs::CtxtData, XVprocSs::DeintPtr, XVprocSs::HcrsmplrPtr, XVprocSs::HscalerPtr, XVprocSs::LboxPtr, XVprocSs_ContextData::PixelWidthInBits, XVprocSs::VcrsmplrInPtr, XVprocSs::VcrsmplrOutPtr, XVprocSs::VdmaPtr, and XVprocSs::VscalerPtr.

void XVprocSs_ReportSubsystemConfig

(

XVprocSs *

InstancePtr

)

This function reports the subsystem HW and input/output stream configuration.

Parameters

InstancePtr

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

Returns

None

References XVprocSs_Config::ColorDepth, XVprocSs::Config, XVprocSs_Config::MaxHeight, XVprocSs_Config::MaxWidth, XVprocSs_Config::NumVidComponents, XVprocSs_Config::PixPerClock, XVprocSs::VidIn, XVprocSs::VidOut, XVprocSs_GetPipZoomWinHStepSize, XVprocSs_GetSubsystemTopology, XVprocSs_GetZoomPipWindow(), XVprocSs_IsConfigModeMax, XVprocSs_IsPipModeOn, XVprocSs_IsZoomModeOn, and XVprocSs_ReportSubsystemCoreInfo().

void XVprocSs_ReportSubsystemCoreInfo

(

XVprocSs *

InstancePtr

)

This function reports list of cores included in Video Processing Subsystem.

Parameters

InstancePtr

is a pointer to the Subsystem instance.

Returns

None

References XVprocSs::CscPtr, XVprocSs::DeintPtr, XVprocSs::HcrsmplrPtr, XVprocSs::HscalerPtr, XVprocSs::LboxPtr, XVprocSs::RouterPtr, XVprocSs::RstAximmPtr, XVprocSs::RstAxisPtr, XVprocSs::VcrsmplrInPtr, XVprocSs::VcrsmplrOutPtr, XVprocSs::VdmaPtr, and XVprocSs::VscalerPtr.

Referenced by XVprocSs_ReportSubsystemConfig().

void XVprocSs_Reset

(

XVprocSs *

InstancePtr

)

This function resets the video subsystem sub-cores.

There are 2 reset networks within the subsystem

• For cores that are on AXIS interface
• For cores that are on AXI-MM interface

Parameters

InstancePtr

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

Returns

None

References XVprocSs::CtxtData, XVprocSs::DeintPtr, RESET_MASK_IP_AXIS, XVprocSs::RstAxisPtr, XVprocSs_ContextData::StartCore, and XVprocSs::VdmaPtr.

Referenced by XVprocSs_CfgInitialize().

void XVprocSs_SetFrameBufBaseaddr	(	XVprocSs *	InstancePtr,
		u32	addr
	)

This function sets the base address of the video frame buffers used by the subsystem instance.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
addr	is the base address of the video frame buffers

Returns

None

References XVprocSs::FrameBufBaseaddr.

int XVprocSs_SetPictureActiveWindow	(	XVprocSs *	InstancePtr,
		XVidC_VideoWindow *	Win
	)

This function sets picture active window.

Post this function call all further picture settings will apply only within the defined window. Active window gets reset everytime subsystem configuration changes

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
Win	is the pointer to window coordinates within which picture settings should be applied

Returns

XST_SUCCESS if window is valid else XST_FAILURE

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscPtr.

void XVprocSs_SetPictureBrightness	(	XVprocSs *	InstancePtr,
		s32	NewValue
	)

This function updates picture brighntess setting with specified value.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewValue	is the new value to be written Range: 0-100

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureColorRange	(	XVprocSs *	InstancePtr,
		XVidC_ColorRange	NewVal
	)

This function sets picture color range for output.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewVal	is the required color range XVIDC_CR_16_235 XVIDC_CR_16_240

• XVIDC_CR_0_255

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureColorStdIn	(	XVprocSs *	InstancePtr,
		XVidC_ColorStd	NewVal
	)

This function sets picture color standard setting for input.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewVal	is the required color standard XVIDC_BT_2020 XVIDC_BT_709 XVIDC_BT_601

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureColorStdOut	(	XVprocSs *	InstancePtr,
		XVidC_ColorStd	NewVal
	)

This function sets picture color standard setting for output.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewVal	is the required color standard XVIDC_BT_2020 XVIDC_BT_709 XVIDC_BT_601

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureContrast	(	XVprocSs *	InstancePtr,
		s32	NewValue
	)

This function updates picture contrast setting with specified value.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewValue	is the new value to be written Range: 0-100

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureGain	(	XVprocSs *	InstancePtr,
		XVprocSs_ColorChannel	ChId,
		s32	NewValue
	)

This function updates picture gain setting with specified value.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
ChId	is the color channel id for which gain is to be updated
NewValue	is the new value to be written Range: 0-100

Returns

none

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPictureSaturation	(	XVprocSs *	InstancePtr,
		s32	NewValue
	)

This function updates picture saturation setting with specified value.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
NewValue	is the new value to be written Range: 0-100

Returns

None

Note

Applicable only if CSC core is included in the subsystem

References XVprocSs::CscL2Reg, and XVprocSs::CscPtr.

void XVprocSs_SetPIPBackgroundColor	(	XVprocSs *	InstancePtr,
		XLboxColorId	ColorId
	)

This function sets PIP background color.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
ColorIs	is the requested background color XLBOX_BKGND_BLACK XLBOX_BKGND_WHITE XLBOX_BKGND_RED XLBOX_BKGND_GREEN XLBOX_BKGND_BLUE

Returns

None

Note

Applicable only if Letterbox core is included in the subsystem

References XVprocSs::CtxtData, XVprocSs::LboxPtr, XVprocSs_ContextData::StrmCformat, and XVprocSs::VidIn.

void XVprocSs_SetPipMode	(	XVprocSs *	InstancePtr,
		u8	OnOff
	)

This function configures the video subsystem to enable/disable PIP feature If PIP mode is set to ON but user has not set window coordinates then half of input stream resolution at coordinates 0,0 is set as the default zoom window.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
OnOff	is the action required

Returns

None

Note

User must call XVprocSs_ConfigureSubsystem() for change to take effect This call has not been added here such that it provides an opportunity to make the change during vertical blanking at system level. This behavior will change once shadow register support is available in sub-core IP's This function is not applicable in Subsystem Stream Mode Configuration

References XVprocSs::CtxtData, XVprocSs_ContextData::PipEn, XVprocSs_IsConfigModeMax, and XVprocSs_ContextData::ZoomEn.

int XVprocSs_SetStreamResolution	(	XVidC_VideoStream *	StreamPtr,
		const XVidC_VideoMode	VmId
	)

This function validates the video mode id against the supported resolutions and if successful extracts the timing information for the mode.

Parameters

StreamPtr	is a pointer to the video stream to be configured
VmId	is the Video Mode ID of the new resolution to be set

Returns

XST_SUCESS if successful else XST_FAILURE

Referenced by XVprocSs_SetVidStreamIn(), and XVprocSs_SetVidStreamOut().

int XVprocSs_SetSubsystemConfig

(

XVprocSs *

InstancePtr

)

This function is the entry point into the video processing subsystem driver processing path.

It will examine the instantiated subsystem configuration mode and the input and output stream configuration. Based on the available information control flow is determined and requisite sub-cores are configured to implement the supported use case

Parameters

InstancePtr

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

Returns

XST_SUCCESS if successful else XST_FAILURE

References XVprocSs::VidIn, XVprocSs::VidOut, and XVprocSs_GetSubsystemTopology.

void XVprocSs_SetUserTimerHandler	(	XVprocSs *	InstancePtr,
		XVidC_DelayHandler	CallbackFunc,
		void *	CallbackRef
	)

This function registers the user defined delay/sleep function with subsystem.

Parameters

InstancePtr	is a pointer to the Subsystem instance
CallbackFunc	is the function pointer to the user defined delay function
CallbackRef	is the pointer to timer instance used by the delay function

Returns

None

References XVprocSs::UsrDelayUs, and XVprocSs::UsrTmrPtr.

int XVprocSs_SetVidStreamIn	(	XVprocSs *	InstancePtr,
		const XVidC_VideoStream *	StrmIn
	)

This function configures the video subsystem input interface.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
StrmIn	is the pointer to input stream configuration

Returns

XST_SUCESS if successful else XST_FAILURE

References XVprocSs::VidIn, and XVprocSs_SetStreamResolution().

int XVprocSs_SetVidStreamOut	(	XVprocSs *	InstancePtr,
		const XVidC_VideoStream *	StrmOut
	)

This function configures the video subsystem output interface.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
StrmOut	is the pointer to input stream configuration

Returns

XST_SUCESS if successful else XST_FAILURE

References XVprocSs::VidOut, and XVprocSs_SetStreamResolution().

void XVprocSs_SetZoomMode	(	XVprocSs *	InstancePtr,
		u8	OnOff
	)

This function configures the video subsystem to enable/disable ZOOM feature If ZOOM mode is set to ON but user has not set window coordinates then quarter of input stream resolution at coordinates 0,0 is set as the default zoom window.

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
OnOff	is the action required

Returns

None

Note

User must call XVprocSs_ConfigureSubsystem() for change to take effect This call has not been added here such that it provides an opportunity to make the change during vertical blanking at system level. This behavior will change once shadow register support is available in sub-core IP's This function is not applicable in Subsystem Stream Mode Configuration

References XVprocSs::CtxtData, XVprocSs_ContextData::PipEn, XVprocSs_IsConfigModeMax, and XVprocSs_ContextData::ZoomEn.

void XVprocSs_SetZoomPipWindow	(	XVprocSs *	InstancePtr,
		XVprocSs_Win	mode,
		XVidC_VideoWindow *	win
	)

This function allows user to set the Zoom or PIP window.

Scratch pad memory is updated with the new window information

Parameters

InstancePtr	is a pointer to the Subsystem instance to be worked on.
mode	is feature to be updated PIP or ZOOM
win	is structure that contains window coordinates and size

Returns

None

Note

For Zoom mode RD client window is written in scratch pad memory For Pip mode WR client window is written in scratch pad memory This function is not applicable in Subsystem Stream Mode Configuration

References XVprocSs::Config, XVprocSs::CtxtData, XVprocSs_ContextData::PixelHStepSize, XVprocSs_Config::PixPerClock, XVprocSs_ContextData::RdWindow, XVprocSs::VdmaPtr, XVprocSs_ContextData::WrWindow, and XVprocSs_IsConfigModeMax.

void XVprocSs_Start

(

XVprocSs *

InstancePtr

)

This function starts the video subsystem including all sub-cores that are included in the processing pipeline for a given use-case.

Video pipe is started from back to front

Parameters

InstancePtr

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

Returns

None

Note

Cores are started only if the corresponding start flag in the scratch pad memory is set. This allows to selectively start only those cores included in the processing chain

References XVprocSs::CscPtr, XVprocSs::CtxtData, XVprocSs::DeintPtr, XVprocSs::HcrsmplrPtr, XVprocSs::HscalerPtr, XVprocSs::LboxPtr, RESET_MASK_VIDEO_IN, XVprocSs::RstAxisPtr, XVprocSs_ContextData::StartCore, XVprocSs::VcrsmplrInPtr, XVprocSs::VcrsmplrOutPtr, XVprocSs::VdmaPtr, and XVprocSs::VscalerPtr.

Referenced by XVprocSs_SetupRouterDataFlow().

void XVprocSs_Stop

(

XVprocSs *

InstancePtr

)

This function stops the video subsystem including all sub-cores Stop the video pipe starting from front to back.

Parameters

InstancePtr

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

Returns

None

References XVprocSs::CscPtr, XVprocSs::DeintPtr, XVprocSs::HcrsmplrPtr, XVprocSs::HscalerPtr, XVprocSs::LboxPtr, XVprocSs::VcrsmplrInPtr, XVprocSs::VcrsmplrOutPtr, XVprocSs::VdmaPtr, and XVprocSs::VscalerPtr.

void XVprocSs_UpdateZoomPipWindow

(

XVprocSs *

InstancePtr

)

This function updates the Pip/Zoom window currently on screen in-place.

This implies the video is not blanked and the new coordinates will update instantly as the function executes

Parameters

InstancePtr

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

Returns

None

Note

This function must be called only after the respective mode (PIP/Zoom) has been enabled and user wants to move window to a new location This function is not applicable in Subsystem Stream Mode Configuration

References XVprocSs::CtxtData, XVprocSs::LboxPtr, XVprocSs::VdmaPtr, XVprocSs::VidOut, XVprocSs_ContextData::WrWindow, XVprocSs_IsConfigModeMax, and XVprocSs_IsPipModeOn.

Variable Documentation

XVprocSs_SubCores subcoreRepo

Define Driver instance of all sub-core included in the design.