v42.c File Reference

#include <math.h>
#include <stdio.h>

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Classes
struct	dict

Macros
#define	N1   11 /* maximum codeword size in bits (V.42bis App II.1) */
#define	N2   (1<<N1) /* maximum number of codewords */
#define	N3   8 /* character size in bits */
#define	N4   (1<<N3) /* number of characters in alphabet */
#define	N5
#define	N6   3 /* number of control codewords */
#define	N7   250 /* maximum string length */
#define	ETM   0 /* Enter transparent mode */
#define	FLUSH   1 /* Flush data */
#define	STEPUP   2 /* Step up codeword size */
#define	ECM   0 /* Enter compress mode */
#define	EID   1 /* Escape character in data */
#define	RESET   2 /* Force reinitialization */
#define	C_INIT   (-1)
#define	C_ERROR   (-2)
#define	C_DATA   (-3)
#define	C_TRANSFER   (-4)
#define	C_FLUSH   (-5)
#define	C_STOP   (-6) /* not part of V42 spec */

Functions
int	getdata ()
int	getcode (int size)
void	putcode (unsigned long code, int size)
void	putdata (int data)
void	init_dict ()
unsigned long	search_dict (unsigned long string, unsigned char data)
void	add_dict (unsigned long string, unsigned char data)
void	checksize_dict ()
void	encode ()
void	decode ()
int	main (int argc, argv)

Variables
int	p0
int	p1
int	p2
int	c1
int	c2
int	c3
int	escape
int	compress
struct dict	dict [N2+1]
unsigned long	last
unsigned char	inbuf []
unsigned long	baddr
unsigned long	eaddr
int	codedone
unsigned char	codebuf [8 *1024]
unsigned char	outbuf [8 *1024]
unsigned char *	eout = outbuf

Macro Definition Documentation

#define C_DATA   (-3)

Referenced by decode(), and encode().

#define C_ERROR   (-2)

Referenced by decode(), and encode().

#define C_FLUSH   (-5)

Referenced by decode(), encode(), getcode(), getdata(), putcode(), and putdata().

#define C_INIT   (-1)

Referenced by decode(), encode(), getcode(), and getdata().

#define C_STOP   (-6) /* not part of V42 spec */

Referenced by decode(), encode(), getcode(), and getdata().

#define C_TRANSFER   (-4)

Referenced by decode(), and encode().

#define ECM   0 /* Enter compress mode */

Referenced by decode(), and encode().

#define EID   1 /* Escape character in data */

Referenced by decode(), and encode().

#define ETM   0 /* Enter transparent mode */

Referenced by decode(), and encode().

#define FLUSH   1 /* Flush data */

Referenced by decode(), encode(), and putcode().

#define N1   11 /* maximum codeword size in bits (V.42bis App II.1) */

#define N2   (1<<N1) /* maximum number of codewords */

Referenced by add_dict(), and init_dict().

#define N3   8 /* character size in bits */

Referenced by decode(), encode(), init_dict(), and putcode().

#define N4   (1<<N3) /* number of characters in alphabet */

Referenced by encode(), and init_dict().

#define N5

Value:

(N4+N6) /* index of first dict entry to use for strings
*    0..N6-1 are reserved for control codewords,
*    N6..N5-1 are reserved for individual chars. */

Referenced by add_dict(), and init_dict().

#define N6   3 /* number of control codewords */

Referenced by decode(), encode(), init_dict(), and search_dict().

#define N7   250 /* maximum string length */

Referenced by decode(), and encode().

#define RESET   2 /* Force reinitialization */

Referenced by decode(), encode(), and leon3_funclt_trap::Instruction::RaiseException().

#define STEPUP   2 /* Step up codeword size */

Referenced by checksize_dict(), and decode().

Function Documentation

void add_dict	(	unsigned long	string,
		unsigned char	data
	)

References c1, dict::data, dict, dict::kids, last, N2, N5, dict::parent, and dict::sibling.

Referenced by decode(), and encode().

void checksize_dict

(

)

References putcode(), and STEPUP.

Referenced by encode().

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void decode

(

)

References add_dict(), C_DATA, C_ERROR, C_FLUSH, C_INIT, C_STOP, C_TRANSFER, dict::data, ECM, EID, ETM, FLUSH, getcode(), init_dict(), N3, N6, N7, dict::parent, putdata(), RESET, s, search_dict(), and STEPUP.

Referenced by main().

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void encode

(

)

References add_dict(), c2, C_DATA, C_ERROR, C_FLUSH, C_INIT, C_STOP, C_TRANSFER, checksize_dict(), dict::data, ECM, EID, ETM, FLUSH, getdata(), init_dict(), N3, N4, N6, N7, putcode(), RESET, and search_dict().

Referenced by main(), and usi.cci.parameter::write().

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int getcode

(

int

size

)

References baddr, C_FLUSH, C_INIT, C_STOP, and eaddr.

Referenced by decode().

int getdata

(

)

References C_FLUSH, C_INIT, C_STOP, and inbuf.

Referenced by encode().

void init_dict

(

)

References dict::data, dict::kids, last, N2, N3, N4, N5, N6, dict::parent, and dict::sibling.

Referenced by decode(), and encode().

int main	(	int	argc,
		argv
	)

References baddr, decode(), eaddr, encode(), i, outbuf, and s.

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void putcode	(	unsigned long	code,
		int	size
	)

References baddr, C_FLUSH, eaddr, FLUSH, and N3.

Referenced by checksize_dict(), and encode().

void putdata

(

int

data

)

References C_FLUSH, and dict::data.

Referenced by decode().

unsigned long search_dict	(	unsigned long	string,
		unsigned char	data
	)

References dict::kids, last, N6, and dict::sibling.

Referenced by decode(), and encode().

Variable Documentation

unsigned long baddr

Referenced by getcode(), main(), and putcode().

int c1

Referenced by add_dict(), and fpu_main().

int c2

Referenced by encode().

int c3

unsigned char codebuf[8 *1024]

int codedone

int compress

struct dict dict[N2+1]

Referenced by add_dict(), pysc::api::cci::USICCIParam::cci_properties(), and pysc::api::cci::get_properties().

unsigned long eaddr

Referenced by getcode(), main(), and putcode().

unsigned char* eout = outbuf

int escape

unsigned char inbuf[]

Referenced by getdata().

unsigned long last

Referenced by add_dict(), init_dict(), and search_dict().

unsigned char outbuf[8 *1024]

Referenced by main().

int p0

Referenced by mmu_test().

int p1

int p2

Referenced by operator==().