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