tools.h File Reference

Jo Engine Tools (printf, etc,) More...

#include "math.h"

Go to the source code of this file.

Data Structures
struct	jo_datetime
	DateTime struct. More...

Macros
#define	JO_FIXED_TV_WIDTH
	Fixed value of JO_TV_WIDTH. More...
#define	JO_FIXED_TV_HEIGHT
	Fixed value of JO_TV_HEIGHT. More...
#define	jo_printf_debug(X, Y, fmt, args...)
#define	JO_NULL
	NULL implementation. More...
#define	JO_UNUSED_ARG(ARG)
	Mark function argument as unused. More...

Enumerations
enum	jo_language {   English, Deutsch, French, Espanol,   Italiano, Japanese }
	Language type. More...
enum	jo_horizontal_move { None, Left, Right }
	Horizontal move. More...

Functions
static __jo_force_inline short	jo_swap_endian_short (short value)
	Swap Short endian. More...
static __jo_force_inline unsigned short	jo_swap_endian_ushort (unsigned short value)
	Swap Unsigned short endian. More...
static __jo_force_inline unsigned int	jo_swap_endian_uint (unsigned int value)
	Swap unsigned int endian. More...
static __jo_force_inline int	jo_swap_endian_int (int value)
	Swap int endian. More...
int	sprintf (char *str, const char *format,...)
	sprintf prototypes More...
static __jo_force_inline void	jo_dma_copy (void *src, void *dest, unsigned int size)
	DMA copy. More...
static __jo_force_inline bool	jo_tools_is_whitespace (const char c)
	Check if the character is a whitespace. More...
static __jo_force_inline int	jo_4_char_hash (const char *const str)
	Create an hash code based on the first four character of the string. More...
jo_language	jo_get_current_language (void)
	Get Sega saturn current language. More...
void	jo_getdate (jo_datetime *now)
	get current date and time More...
int	jo_tools_atoi (const char *restrict str)
	atoi implementation More...
int	jo_strlen (const char *restrict str)
	strlen implementation More...
int	jo_strcmp (const char *restrict p1, const char *restrict p2)
	strcmp implementation More...
static __jo_force_inline bool	jo_string_equals (const char *restrict p1, const char *restrict p2)
	Determine if two string equals. More...
bool	jo_endwith (const char *restrict str, const char *restrict end)
	determine if str end with a specific string More...
void	jo_memset (const void *const restrict ptr, const int value, unsigned int num)
	Sets the first num bytes of the block of memory pointed by ptr to the specified value (interpreted as an unsigned char) More...
static __jo_force_inline void	jo_yield (void)
	Little pause possible. More...
static __jo_force_inline void	jo_spin_wait (int iterations)
	Causes "a thread" to wait the number of times defined by the iterations parameter. More...
void	jo_map_to_vram (unsigned short *restrict data, unsigned short *restrict vram_addr, unsigned short suuj, unsigned short suui, unsigned short palnum, unsigned int mapoff)
	Copies the image map data to VRAM. More...
static __jo_force_inline void	jo_cell_to_vram (unsigned char *restrict data, unsigned char *restrict vram_addr, unsigned int size)
	Copies the image cel data to VRAM. More...

Variables
char	__jo_sprintf_buf [JO_PRINTF_BUF_SIZE]
	Internal sprintf buffer. More...

Detailed Description

Jo Engine Tools (printf, etc,)

Author

Johannes Fetz

Bug:

No known bugs.

---

Data Structure Documentation

jo_datetime

struct jo_datetime

DateTime struct.

Data Fields
unsigned char	day
unsigned char	hour
unsigned char	minute
unsigned char	month
unsigned char	second
unsigned char	week
unsigned short	year

Macro Definition Documentation

JO_FIXED_TV_HEIGHT

#define JO_FIXED_TV_HEIGHT

Fixed value of JO_TV_HEIGHT.

JO_FIXED_TV_WIDTH

#define JO_FIXED_TV_WIDTH

Fixed value of JO_TV_WIDTH.

JO_NULL

#define JO_NULL

NULL implementation.

jo_printf_debug

#define jo_printf_debug	(		X,
			Y,
			fmt,
			args...
	)

JO_UNUSED_ARG

#define JO_UNUSED_ARG

(

ARG

)

Mark function argument as unused.

Enumeration Type Documentation

jo_horizontal_move

enum jo_horizontal_move

Horizontal move.

Enumerator
None
Left
Right

jo_language

enum jo_language

Language type.

Enumerator
English
Deutsch
French
Espanol
Italiano
Japanese

Function Documentation

jo_4_char_hash()

static __jo_force_inline int jo_4_char_hash ( const char *const  str )

static

Create an hash code based on the first four character of the string.

Parameters

str

String

Returns

the hashcode (integer)

jo_cell_to_vram()

static __jo_force_inline void jo_cell_to_vram ( unsigned char *restrict  data, unsigned char *restrict  vram_addr, unsigned int  size  )

static

Copies the image cel data to VRAM.

Parameters

data	Data source
vram_addr	VRAM address
size	Data size

jo_dma_copy()

static __jo_force_inline void jo_dma_copy ( void *  src, void *  dest, unsigned int  size  )

static

DMA copy.

Parameters

src	Data source
dest	Destination
size	Size of source

Todo:

Implementation without SGL

jo_endwith()

bool jo_endwith	(	const char *restrict	str,
		const char *restrict	end
	)

determine if str end with a specific string

Parameters

str	This is the string
end	The ending string

Returns

This function returns true if str end with "end" param otherwise false

jo_get_current_language()

jo_language jo_get_current_language

(

void

)

Get Sega saturn current language.

Returns

The language

jo_getdate()

void jo_getdate

(

jo_datetime *

now

)

get current date and time

Parameters

now

result

jo_map_to_vram()

void jo_map_to_vram	(	unsigned short *restrict	data,
		unsigned short *restrict	vram_addr,
		unsigned short	suuj,
		unsigned short	suui,
		unsigned short	palnum,
		unsigned int	mapoff
	)

Copies the image map data to VRAM.

Parameters

data	Data source
vram_addr	VRAM address
suui	SUUI
suuj	SUUJ
palnum	Palette number
mapoff	MapOff

jo_memset()

void jo_memset	(	const void *const restrict	ptr,
		const int	value,
		unsigned int	num
	)

Sets the first num bytes of the block of memory pointed by ptr to the specified value (interpreted as an unsigned char)

Parameters

ptr	Pointer to the block of memory to fill.
value	Value to be set. The value is passed as an int, but the function fills the block of memory using the unsigned char conversion of this value.
num	Number of bytes to be set to the value.

Remarks

No return value in this implementation

jo_spin_wait()

static __jo_force_inline void jo_spin_wait ( int  iterations )

static

Causes "a thread" to wait the number of times defined by the iterations parameter.

Parameters

iterations

defines how long "a thread" is to wait

jo_strcmp()

int jo_strcmp	(	const char *restrict	p1,
		const char *restrict	p2
	)

strcmp implementation

Parameters

p1	First string
p2	Second string

Returns

Compare p1 and p2, returning less than, equal to or greater than zero if p1 is lexicographically less than, equal to or greater than p2.

jo_string_equals()

static __jo_force_inline bool jo_string_equals ( const char *restrict  p1, const char *restrict  p2  )

static

Determine if two string equals.

Parameters

p1	First string
p2	Second string

Returns

True if p1 and p2 is the same

jo_strlen()

int jo_strlen

(

const char *restrict

str

)

strlen implementation

Parameters

str	This is the string

Returns

This function returns the length of str

jo_swap_endian_int()

static __jo_force_inline int jo_swap_endian_int ( int  value )

static

Swap int endian.

Parameters

value

Little or Big endian int

Returns

Endian swapped int

jo_swap_endian_short()

static __jo_force_inline short jo_swap_endian_short ( short  value )

static

Swap Short endian.

Parameters

value

Little or Big endian short

Returns

Endian swapped short

jo_swap_endian_uint()

static __jo_force_inline unsigned int jo_swap_endian_uint ( unsigned int  value )

static

Swap unsigned int endian.

Parameters

value

Little or Big endian unsigned int

Returns

Endian swapped unsigned int

jo_swap_endian_ushort()

static __jo_force_inline unsigned short jo_swap_endian_ushort ( unsigned short  value )

static

Swap Unsigned short endian.

Parameters

value

Little or Big endian unsigned short

Returns

Endian swapped unsigned short

jo_tools_atoi()

int jo_tools_atoi

(

const char *restrict

str

)

atoi implementation

Parameters

str	This is the string representation of an integral number

Returns

This function returns the converted integral number as an int value. If no valid conversion could be performed, it returns zero

jo_tools_is_whitespace()

static __jo_force_inline bool jo_tools_is_whitespace ( const char  c )

static

Check if the character is a whitespace.

Parameters

c	variable of char type

Returns

true if the character is a whitespace otherwise false

jo_yield()

static __jo_force_inline void jo_yield ( void  )

static

Little pause possible.

sprintf()

int sprintf	(	char *	str,
		const char *	format,
			...
	)

sprintf prototypes

Parameters

str	String
format	Format string
...	Arguments

Returns

If successful, the total number of characters written is returned excluding the null-character appended at the end of the string, otherwise a negative number is returned in case of failure.

Variable Documentation

__jo_sprintf_buf

char __jo_sprintf_buf[JO_PRINTF_BUF_SIZE]

Internal sprintf buffer.

Warning

MC Hammer: don't touch this