88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
#ifndef ENDIANSWAPPER_H_
|
|
#define ENDIANSWAPPER_H_
|
|
|
|
#include <framework/osal/Endiness.h>
|
|
#include <cstring>
|
|
#include <iostream>
|
|
|
|
class EndianConverter {
|
|
private:
|
|
EndianConverter() {};
|
|
public:
|
|
/**
|
|
* Swap the endianness of a variable with arbitrary type
|
|
* @tparam T Type of variable
|
|
* @param in variable
|
|
* @return Variable with swapped endianness
|
|
*/
|
|
template<typename T>
|
|
static T convertBigEndian(T in) {
|
|
#ifndef BYTE_ORDER_SYSTEM
|
|
#error BYTE_ORDER_SYSTEM not defined
|
|
#elif BYTE_ORDER_SYSTEM == LITTLE_ENDIAN
|
|
T tmp;
|
|
uint8_t *pointerOut = (uint8_t*) &tmp;
|
|
uint8_t *pointerIn = (uint8_t*) ∈
|
|
for (uint8_t count = 0; count < sizeof(T); count++) {
|
|
pointerOut[sizeof(T) - count - 1] = pointerIn[count];
|
|
}
|
|
return tmp;
|
|
#elif BYTE_ORDER_SYSTEM == BIG_ENDIAN
|
|
return in;
|
|
#else
|
|
#error Unknown Byte Order
|
|
#endif
|
|
}
|
|
|
|
static void convertBigEndian(uint8_t *out, const uint8_t *in,
|
|
uint32_t size) {
|
|
#ifndef BYTE_ORDER_SYSTEM
|
|
#error BYTE_ORDER_SYSTEM not defined
|
|
#elif BYTE_ORDER_SYSTEM == LITTLE_ENDIAN
|
|
for (uint8_t count = 0; count < size; count++) {
|
|
out[size - count - 1] = in[count];
|
|
}
|
|
return;
|
|
#elif BYTE_ORDER_SYSTEM == BIG_ENDIAN
|
|
memcpy(out, in, size);
|
|
return;
|
|
#endif
|
|
}
|
|
|
|
|
|
template<typename T>
|
|
static T convertLittleEndian(T in) {
|
|
#ifndef BYTE_ORDER_SYSTEM
|
|
#error BYTE_ORDER_SYSTEM not defined
|
|
#elif BYTE_ORDER_SYSTEM == BIG_ENDIAN
|
|
T tmp;
|
|
uint8_t *pointerOut = (uint8_t *) &tmp;
|
|
uint8_t *pointerIn = (uint8_t *) ∈
|
|
for (uint8_t count = 0; count < sizeof(T); count++) {
|
|
pointerOut[sizeof(T) - count - 1] = pointerIn[count];
|
|
}
|
|
return tmp;
|
|
#elif BYTE_ORDER_SYSTEM == LITTLE_ENDIAN
|
|
return in;
|
|
#else
|
|
#error Unknown Byte Order
|
|
#endif
|
|
}
|
|
static void convertLittleEndian(uint8_t *out, const uint8_t *in,
|
|
uint32_t size) {
|
|
#ifndef BYTE_ORDER_SYSTEM
|
|
#error BYTE_ORDER_SYSTEM not defined
|
|
#elif BYTE_ORDER_SYSTEM == BIG_ENDIAN
|
|
for (uint8_t count = 0; count < size; count++) {
|
|
out[size - count - 1] = in[count];
|
|
}
|
|
return;
|
|
#elif BYTE_ORDER_SYSTEM == LITTLE_ENDIAN
|
|
memcpy(out, in, size);
|
|
return;
|
|
#endif
|
|
}
|
|
};
|
|
|
|
#endif /* ENDIANSWAPPER_H_ */
|