mirror of
https://github.com/Relintai/sfw.git
synced 2024-12-20 21:06:49 +01:00
149 lines
2.7 KiB
C
149 lines
2.7 KiB
C
//--STRIP
|
|
#ifndef MARSHALLS_H
|
|
#define MARSHALLS_H
|
|
//--STRIP
|
|
|
|
/*************************************************************************/
|
|
/* marshalls.h */
|
|
/* From https://github.com/Relintai/pandemonium_engine (MIT) */
|
|
/*************************************************************************/
|
|
|
|
//--STRIP
|
|
#include "core/int_types.h"
|
|
#include "core/math_defs.h"
|
|
//--STRIP
|
|
|
|
/**
|
|
* Miscellaneous helpers for marshalling data types, and encoding
|
|
* in an endian independent way
|
|
*/
|
|
|
|
union MarshallFloat {
|
|
uint32_t i; ///< int
|
|
float f; ///< float
|
|
};
|
|
|
|
union MarshallDouble {
|
|
uint64_t l; ///< long long
|
|
double d; ///< double
|
|
};
|
|
|
|
static inline unsigned int encode_uint16(uint16_t p_uint, uint8_t *p_arr) {
|
|
for (int i = 0; i < 2; i++) {
|
|
*p_arr = p_uint & 0xFF;
|
|
p_arr++;
|
|
p_uint >>= 8;
|
|
}
|
|
|
|
return sizeof(uint16_t);
|
|
}
|
|
|
|
static inline unsigned int encode_uint32(uint32_t p_uint, uint8_t *p_arr) {
|
|
for (int i = 0; i < 4; i++) {
|
|
*p_arr = p_uint & 0xFF;
|
|
p_arr++;
|
|
p_uint >>= 8;
|
|
}
|
|
|
|
return sizeof(uint32_t);
|
|
}
|
|
|
|
static inline unsigned int encode_float(float p_float, uint8_t *p_arr) {
|
|
MarshallFloat mf;
|
|
mf.f = p_float;
|
|
encode_uint32(mf.i, p_arr);
|
|
|
|
return sizeof(uint32_t);
|
|
}
|
|
|
|
static inline unsigned int encode_uint64(uint64_t p_uint, uint8_t *p_arr) {
|
|
for (int i = 0; i < 8; i++) {
|
|
*p_arr = p_uint & 0xFF;
|
|
p_arr++;
|
|
p_uint >>= 8;
|
|
}
|
|
|
|
return sizeof(uint64_t);
|
|
}
|
|
|
|
static inline unsigned int encode_double(double p_double, uint8_t *p_arr) {
|
|
MarshallDouble md;
|
|
md.d = p_double;
|
|
encode_uint64(md.l, p_arr);
|
|
|
|
return sizeof(uint64_t);
|
|
}
|
|
|
|
static inline int encode_cstring(const char *p_string, uint8_t *p_data) {
|
|
int len = 0;
|
|
|
|
while (*p_string) {
|
|
if (p_data) {
|
|
*p_data = (uint8_t)*p_string;
|
|
p_data++;
|
|
}
|
|
p_string++;
|
|
len++;
|
|
};
|
|
|
|
if (p_data) {
|
|
*p_data = 0;
|
|
}
|
|
return len + 1;
|
|
}
|
|
|
|
static inline uint16_t decode_uint16(const uint8_t *p_arr) {
|
|
uint16_t u = 0;
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
uint16_t b = *p_arr;
|
|
b <<= (i * 8);
|
|
u |= b;
|
|
p_arr++;
|
|
}
|
|
|
|
return u;
|
|
}
|
|
|
|
static inline uint32_t decode_uint32(const uint8_t *p_arr) {
|
|
uint32_t u = 0;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
uint32_t b = *p_arr;
|
|
b <<= (i * 8);
|
|
u |= b;
|
|
p_arr++;
|
|
}
|
|
|
|
return u;
|
|
}
|
|
|
|
static inline float decode_float(const uint8_t *p_arr) {
|
|
MarshallFloat mf;
|
|
mf.i = decode_uint32(p_arr);
|
|
return mf.f;
|
|
}
|
|
|
|
static inline uint64_t decode_uint64(const uint8_t *p_arr) {
|
|
uint64_t u = 0;
|
|
|
|
for (int i = 0; i < 8; i++) {
|
|
uint64_t b = (*p_arr) & 0xFF;
|
|
b <<= (i * 8);
|
|
u |= b;
|
|
p_arr++;
|
|
}
|
|
|
|
return u;
|
|
}
|
|
|
|
static inline double decode_double(const uint8_t *p_arr) {
|
|
MarshallDouble md;
|
|
md.l = decode_uint64(p_arr);
|
|
return md.d;
|
|
}
|
|
|
|
//--STRIP
|
|
#endif
|
|
//--STRIP
|