xdpdma_video_example.c File Reference

Overview

This file contains a design example using the DPDMA driver (XDpDma) This example demonstrates the use of DPDMA for displaying a Graphics Overlay.

Note

None.

 MODIFICATION HISTORY:

 Ver   Who Date     Changes



 1.0    aad 10/19/17    Initial Release
 1.1   aad 02/22/18    Fixed the header

Functions
int	main ()
	Main function to call the DPDMA Video example. More...
int	DpdmaVideoExample (Run_Config *RunCfgPtr)
	The purpose of this function is to illustrate how to use the XDpDma device driver in Graphics overlay mode. More...
void	InitRunConfig (Run_Config *RunCfgPtr)
	The purpose of this function is to initialize the application configuration. More...
int	InitDpDmaSubsystem (Run_Config *RunCfgPtr)
	The purpose of this function is to initialize the DP Subsystem (XDpDma, XAVBuf, XDpPsu) More...
void	SetupInterrupts (Run_Config *RunCfgPtr)
	The purpose of this function is to setup call back functions for the DP controller interrupts. More...
u8 *	GraphicsOverlay (u8 *Frame, Run_Config *RunCfgPtr)
	The purpose of this function is to generate a Graphics frame of the format RGBA8888 which generates an overlay on 1/2 of the bottom of the screen. More...

Function Documentation

int DpdmaVideoExample

(

Run_Config *

RunCfgPtr

)

The purpose of this function is to illustrate how to use the XDpDma device driver in Graphics overlay mode.

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

XST_SUCCESS if successful, else XST_FAILURE.

Note

None.

References GraphicsOverlay(), InitDpDmaSubsystem(), InitRunConfig(), and SetupInterrupts().

Referenced by main().

u8* GraphicsOverlay	(	u8 *	Frame,
		Run_Config *	RunCfgPtr
	)

The purpose of this function is to generate a Graphics frame of the format RGBA8888 which generates an overlay on 1/2 of the bottom of the screen.

This is just to illustrate the functionality of the graphics overlay.

Parameters

RunCfgPtr	is a pointer to the application configuration structure.
Frame	is a pointer to a buffer which is going to be populated with rendered frame

Returns

Returns a pointer to the frame.

Note

None.

Referenced by DpdmaVideoExample().

int InitDpDmaSubsystem

(

Run_Config *

RunCfgPtr

)

The purpose of this function is to initialize the DP Subsystem (XDpDma, XAVBuf, XDpPsu)

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

None.

Note

None.

References XDpDma_CfgInitialize(), XDpDma_LookupConfig(), XDpDma_SetGraphicsFormat(), and XDpDma_SetQOS().

Referenced by DpdmaVideoExample(), and DpPsu_Run().

void InitRunConfig

(

Run_Config *

RunCfgPtr

)

The purpose of this function is to initialize the application configuration.

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

None.

Note

None.

Referenced by DpdmaVideoExample().

int main

(

)

Main function to call the DPDMA Video example.

Parameters

None

Returns

XST_SUCCESS if successful, otherwise XST_FAILURE.

Note

None

References DpdmaVideoExample().

void SetupInterrupts

(

Run_Config *

RunCfgPtr

)

The purpose of this function is to setup call back functions for the DP controller interrupts.

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

None.

Note

None.

References DpPsu_IsrHpdEvent(), DpPsu_IsrHpdPulse(), XDpDma_InterruptEnable(), and XDpDma_InterruptHandler().

Referenced by DpdmaVideoExample().