data.h

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#ifndef NAVIT_DATA_H
#define NAVIT_DATA_H
 
#include "config.h"
 
#ifdef WORDS_BIGENDIAN
#include <byteswap.h>
#endif
 
static inline unsigned char
get_u8(unsigned char **p)
{
        return *((*p)++);
}
 
static inline unsigned short
get_u16(unsigned char **p) {
        unsigned short ret;
        ret=*((unsigned short *)*p);
        *p+=sizeof(unsigned short);
#ifdef WORDS_BIGENDIAN
        return __bswap_16(ret);
#else
        return ret;
#endif
}
 
static inline unsigned short
get_u16_unal(unsigned char **p) {
        unsigned short ret;
        ret=*(*p)++;
        ret|=(*(*p)++) << 8;
        return ret;
}
 
 
static inline unsigned int
get_u24(unsigned char **p) {
        unsigned long ret;
        ret=get_u16(p);
        ret|=*((*p)++) << 16;
        return ret;
}
 
 
static inline unsigned int
get_u24_unal(unsigned char **p) {
        unsigned long ret;
        ret=get_u16_unal(p);
        ret|=*((*p)++) << 16;
        return ret;
}
 
 
static inline unsigned int
get_u32(unsigned char **p) {
        unsigned long ret;
        ret=*((unsigned int *)*p);
        *p+=sizeof(unsigned int);
#ifdef WORDS_BIGENDIAN
        return __bswap_32(ret);
#else
        return ret;
#endif
}
 
static inline unsigned int
get_u32_unal(unsigned char **p) {
        unsigned long ret;
        ret=*(*p)++;
        ret|=(*(*p)++) << 8;
        ret|=(*(*p)++) << 16;
        ret|=(*(*p)++) << 24;
        return ret;
}
 
static inline char *
get_string(unsigned char **p)
{
        char *ret=(char *)(*p);
        while (**p) (*p)++;
        (*p)++;
        return ret;
}
 
#define L(x) ({ unsigned char *t=(unsigned char *)&(x); t[0] | (t[1] << 8) | (t[2] << 16) | (t[3] << 24); })
 
#endif