mg_osd.c File Reference

general OSD functionality More...

#include "mh5profile.h"
#include "stb_osd.h"
#include "dvb_video.h"
#include "decoder.h"
#include "osd_utils.h"
#include "glue_memory.h"
#include "glue_debug.h"
#include "mg_api.h"
#include "mg_osd.h"
#include "mg_fontapi.h"

Macros
#define	MAGIC_SURF   0x5e4f
#define	DESKTOP_COLOUR   0xff000000
#define	TOTAL_TRANSPARENCY   0x00000000
#define	SD_BlendColour(pxl, clr, prv, swtch)
#define	C2L_ALPHA_CHNNL   0xf000
#define	C4L_ALPHA_CHNNL   0xff000000

Functions
BOOLEAN	MG_IsHdSupported (void)
void	MG_OSDInit (U16BIT inWidth, U16BIT inHeight, U16BIT outWidth, U16BIT outHeight)
void	MG_OSDMhegInit (U16BIT inWidth, U16BIT inHeight, E_ASPECT_RATIO sar)
	Initialise the on screen display Initialise the font and fill in font info. More...
E_MhegErr	MG_Initialise (U16BIT screenWidth, U16BIT screenHeight, U8BIT colourDepth)
	Initialise OSD, font, and font fill information. Should only be called at start up.
void	MG_Terminate (void)
	Free all OSD resources. More...
void	MG_OSDdisplayRectangle (S_REGION *overlap, int x, int y, int width, int height, int line_width, OSDColor lineColour, OSDColor fillColour)
	Draw rectangle. More...
void	MG_OSDdisplayVideo (S_REGION rgn)
	Display video window. More...
void	MG_OSDerase (S_REGION rgn, OSDColor colour)
	Display video window. More...
void	MG_OSDclear (void)
	Clear entire OSD to colour. More...
void	MG_DisplayImage (S_SURFACE *surf, S_REGION *overlap, S32BIT x, S32BIT y)
	Copy the image to the screen buffer. More...
void	MG_OSDdisplayImage (void *data, S_REGION *overlap, int x, int y)
void	MG_FreeData (void *data)
	free surface buffer More...

Variables
S_MGContext	mg_ctxt

Detailed Description

general OSD functionality

Date

21-07-2008

Author

Adam Sturtridge

Function Documentation

void MG_DisplayImage	(	S_SURFACE *	surf,
		S_REGION *	overlap,
		S32BIT	x,
		S32BIT	y
	)

Copy the image to the screen buffer.

Parameters

S_SURFACE*	surf pointer to S_SURFACE object
S_REGION*	overlap region to display
int	x left coord (in screen resolution)
int	y top coord (in screen resolution)

Warning

Bug:

void MG_FreeData

(

void *

data

)

free surface buffer

Parameters

void*

data pointer to S_SURFACE object

Warning

Bug:

void MG_OSDclear

(

void

)

Clear entire OSD to colour.

Clear the screen, making it the specified colour.

Warning

Bug:

void MG_OSDdisplayRectangle	(	S_REGION *	overlap,
		int	x,
		int	y,
		int	width,
		int	height,
		int	line_width,
		OSDColor	lineColour,
		OSDColor	fillColour
	)

Draw rectangle.

Parameters

int

x Box X position on screen (unused by dvp) int y Box Y position on screen (unused by dvp) int width Box width on screen (unused by dvp) int height Box width on screen (unused by dvp) int lineWidth Line width int lineStyle Line style OSDColor lineColour Line colour OSDColor fillColour Rectangle fill colour

Warning

Bug:

void MG_OSDdisplayVideo

(

S_REGION

rgn

)

Display video window.

Parameters

int	boxX1 X position on screen int boxY1 Y position on screen int boxWidth Window width int boxHeight Window height

Bug:

void MG_OSDerase	(	S_REGION	rgn,
		OSDColor	colour
	)

Display video window.

Erase an area of the OSD to the desktop colour.

Parameters

rgn	Region to erase
colour	Desktop colour

Warning

Bug:

void MG_OSDMhegInit	(	U16BIT	inWidth,
		U16BIT	inHeight,
		E_ASPECT_RATIO	sar
	)

Initialise the on screen display Initialise the font and fill in font info.

Parameters

sizeX	width in pixels of the screen
sizeY	height in pixels of the screen
sar	scene aspect ratio

Returns

void

void MG_Terminate

(

void

)

Free all OSD resources.

Parameters

None

Variable Documentation

S_MGContext mg_ctxt

Initial value:

= {
   0, 0,  
   0, 0,  
   0, 0,  
   { 1, 1 },  
   { 1, 1 },  
   { 1, 1 },  
   { 1, 1 },  
   { 1, 1 },  
   NULL,   
   NULL,   
   0,      
   0,      
   COLOUR_FORMAT_PALETTE,              



}