Fake 16bit bitmap mode

Macros
#define	PA_LoadFake16bitBitmap(screen, bitmap)
	Load a 16 bit bitmap into a fake 16 bit background.
#define	PA_ClearFake16bitBg(screen)   dmaFillWords(0, (void*)PA_DrawFake16[screen], 256*192*2)
	Clear a fake 16 bit background.
#define	PA_PutFake16bitPixel(screen, x, y, color)   PA_DrawFake16[screen][(x) + 256 * (y)] = color
	Plots a pixel into a fake 16 bit background.
#define	PA_GetFake16bitPixel(screen, x, y)   PA_DrawFake16[screen][(x) + 256 * (y)]
	Gets the color of a specified pixel of a fake 16 bit background.
#define	PA_DrawFake16bitRect(screen, x1, y1, x2, y2, color)
	Draws a rectangle on a fake 16 bit background.
#define	PA_Fake16bitLoadBmpEx(screen, bmp, x, y)   PA_LoadBmpToBuffer(PA_DrawFake16[screen], x, y, bmp, 256)
	Load a BMP on a fake 16 bit background... Don't forget to Init the background !
#define	PA_Fake16bitLoadBmp(screen, bmp)   PA_Fake16bitLoadBmpEx(screen, bmp, 0, 0)
	Load a BMP on a fake 16 bit background... Don't forget to Init the background !
#define	PA_Fake16bitLoadGif(screen, gif)   PA_Fake16bitLoadGifXY(screen, gif, 0, 0)
	Load a Gif on a fake 16 bit background... Don't forget to Init the background !
#define	PA_Fake16bitLoadJpeg(screen, jpeg)   JPEG_DecompressImage((u8*)jpeg, PA_DrawFake16[screen], 256, 192)
	Load a jpeg on a fake 16 bit background... Don't forget to Init the background !

Functions
void	PA_InitFake16bitBg (u8 screen, u8 prio)
	Initialize a fake 16 bit background.
void	PA_DrawFake16bitLine (u8 screen, u16 x1, u16 y1, u16 x2, u16 y2, u16 color)
	Draws a line on a fake 16 bit background.

Detailed Description

Functions to handle fake 16 bit backgrounds that take up less memory than real ones!

Macro Definition Documentation

PA_LoadFake16bitBitmap

#define PA_LoadFake16bitBitmap	(		screen,
			bitmap
	)

Value:

    do{ \
    DC_FlushRange(bitmap, 256 * 192 * 2); \
    dmaCopy(bitmap, (void*)PA_DrawFake16[screen], 256 * 192 * 2); \
} while(0)

Load a 16 bit bitmap into a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
bitmap	Bitmap name

PA_ClearFake16bitBg

#define PA_ClearFake16bitBg

(

screen

)

dmaFillWords(0, (void*)PA_DrawFake16[screen], 256*192*2)

Clear a fake 16 bit background.

Parameters

screen

Choose the screen (0 or 1)

PA_PutFake16bitPixel

#define PA_PutFake16bitPixel	(		screen,
			x,
			y,
			color
	)		PA_DrawFake16[screen][(x) + 256 * (y)] = color

Plots a pixel into a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
x	X position of the point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y	Y position of the point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results
color	15 bits color. You can use the PA_RGB macro to set the RGB values...

PA_GetFake16bitPixel

#define PA_GetFake16bitPixel	(		screen,
			x,
			y
	)		PA_DrawFake16[screen][(x) + 256 * (y)]

Gets the color of a specified pixel of a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
x	X position of the point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y	Y position of the point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results

PA_DrawFake16bitRect

#define PA_DrawFake16bitRect	(		screen,
			x1,
			y1,
			x2,
			y2,
			color
	)

Value:

    do{\
    PA_DrawFake16bitLine(screen, x1, y1, x2, y1, color);\
    PA_DrawFake16bitLine(screen, x1, y1, x1, y2, color);\
    PA_DrawFake16bitLine(screen, x2, y1, x2, y2, color);\
    PA_DrawFake16bitLine(screen, x1, y2, x2, y2, color);}while(0)

Draws a rectangle on a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
x1	X position of the first point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y1	Y position of the first point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results
x2	X position of the second point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y2	Y position of the second point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results
color	15 bits color. You can use the PA_RGB macro to set the RGB values...

PA_Fake16bitLoadBmpEx

#define PA_Fake16bitLoadBmpEx	(		screen,
			bmp,
			x,
			y
	)		PA_LoadBmpToBuffer(PA_DrawFake16[screen], x, y, bmp, 256)

Load a BMP on a fake 16 bit background... Don't forget to Init the background !

Parameters

screen	Chose de screen (0 or 1)
x	X position of the top left corner
y	Y position of the top left corner
bmp	BMP image...

PA_Fake16bitLoadBmp

#define PA_Fake16bitLoadBmp	(		screen,
			bmp
	)		PA_Fake16bitLoadBmpEx(screen, bmp, 0, 0)

Load a BMP on a fake 16 bit background... Don't forget to Init the background !

Parameters

screen	Choose the screen (0 or 1)
bmp	BMP image...

PA_Fake16bitLoadGif

#define PA_Fake16bitLoadGif	(		screen,
			gif
	)		PA_Fake16bitLoadGifXY(screen, gif, 0, 0)

Load a Gif on a fake 16 bit background... Don't forget to Init the background !

Parameters

screen	Chose de screen (0 or 1)
gif	Gif image...

PA_Fake16bitLoadJpeg

#define PA_Fake16bitLoadJpeg	(		screen,
			jpeg
	)		JPEG_DecompressImage((u8*)jpeg, PA_DrawFake16[screen], 256, 192)

Load a jpeg on a fake 16 bit background... Don't forget to Init the background !

Parameters

screen	Chose de screen (0 or 1)
jpeg	jpeg image...

Function Documentation

PA_InitFake16bitBg()

void PA_InitFake16bitBg ( u8  screen, u8  prio  )

extern

Initialize a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
prio	Background priority (from 0 to 3, being 0 the highest)

PA_DrawFake16bitLine()

void PA_DrawFake16bitLine ( u8  screen, u16  x1, u16  y1, u16  x2, u16  y2, u16  color  )

extern

Draws a line on a fake 16 bit background.

Parameters

screen	Choose the screen (0 or 1)
x1	X position of the first point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y1	Y position of the first point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results
x2	X position of the second point. Be carefull, if X is not between 0 and 255, it'll give unwanted results
y2	Y position of the second point. Be carefull, if Y is not between 0 and 191, it'll give unwanted results
color	15 bits color. You can use the PA_RGB macro to set the RGB values...