Utility Functions

Description

Utility functions.

Functions
void	Attr8Conv (u8 *dst, u8 *attr, const u8 *src, int w, int h, const u8 *pal)
	Convert image from 16-color to 8x8 attribute format. More...
void	Plane2Conv (u8 *plane0, u8 *plane1, const u8 *src, int w, int h)
	Convert image from 4-color to 2-plane format (width must be multiply of 8) More...
void	ImgInvert (u8 *dst, int num)
	Invert image. More...
int	DecUNum (char *buf, u32 num)
	Decode unsigned number into ASCIIZ text buffer. More...
int	DecNum (char *buf, s32 num)
	Decode signed number into ASCIIZ text buffer. More...
void	CopyWhiteImg (u8 *dst, const u8 *src, int num)
	Prepare image with white key transparency (copy and increment pixels) More...

Function Documentation

Attr8Conv()

void Attr8Conv	(	u8 *	dst,
		u8 *	attr,
		const u8 *	src,
		int	w,
		int	h,
		const u8 *	pal
	)

Convert image from 16-color to 8x8 attribute format.

Parameters

dst	Destination image
attr	Destination attribute data
src	Source image
w	Image width
h	Image height
pal	Palette

Plane2Conv()

void Plane2Conv	(	u8 *	plane0,
		u8 *	plane1,
		const u8 *	src,
		int	w,
		int	h
	)

Convert image from 4-color to 2-plane format (width must be multiply of 8)

Parameters

plane0	First plane destination
plane1	Second plane destionation
src	Soure image
w	Image width
h	Image height

ImgInvert()

void ImgInvert	(	u8 *	dst,
		int	num
	)

Invert image.

Parameters

dst	Image data
num	Length of image in bytes

DecUNum()

int DecUNum	(	char *	buf,
		u32	num
	)

Decode unsigned number into ASCIIZ text buffer.

Parameters

buf	Destination buffer
num	Number to decode

Returns

Number of digits

DecNum()

int DecNum	(	char *	buf,
		s32	num
	)

Decode signed number into ASCIIZ text buffer.

Parameters

buf	Destination buffer
num	Number to decode

Returns

Number of digits

CopyWhiteImg()

void CopyWhiteImg	(	u8 *	dst,
		const u8 *	src,
		int	num
	)

Prepare image with white key transparency (copy and increment pixels)

Parameters

dst	Destination image
src	Source image
num	Number of bytes to copy