mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-30 01:25:49 +00:00
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#include "Util/ByteSwap.h"
|
|
#ifdef _MSC_VER
|
|
#include <intrin.h>
|
|
#endif
|
|
|
|
namespace Util
|
|
{
|
|
void FlipEndian16(uint8_t * const buffer, const size_t size)
|
|
{
|
|
#ifdef _MSC_VER
|
|
uint16_t * const buffer16 = (uint16_t*)buffer;
|
|
for (size_t i = 0; i < size/2; i++)
|
|
buffer16[i] = _byteswap_ushort(buffer16[i]);
|
|
#elif defined(__GNUC__)
|
|
uint16_t * const buffer16 = (uint16_t*)buffer;
|
|
for (size_t i = 0; i < size/2; i++)
|
|
buffer16[i] = __builtin_bswap16(buffer16[i]);
|
|
#else
|
|
for (size_t i = 0; i < (size & ~1); i += 2)
|
|
{
|
|
uint8_t tmp = buffer[i + 0];
|
|
buffer[i + 0] = buffer[i + 1];
|
|
buffer[i + 1] = tmp;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void FlipEndian32(uint8_t * const buffer, const size_t size)
|
|
{
|
|
#ifdef _MSC_VER
|
|
uint32_t * const buffer32 = (uint32_t*)buffer;
|
|
for (size_t i = 0; i < size/4; i++)
|
|
buffer32[i] = _byteswap_ulong(buffer32[i]);
|
|
#elif defined(__GNUC__)
|
|
uint32_t * const buffer32 = (uint32_t*)buffer;
|
|
for (size_t i = 0; i < size/4; i++)
|
|
buffer32[i] = __builtin_bswap32(buffer32[i]);
|
|
#else
|
|
for (size_t i = 0; i < (size & ~3); i += 4)
|
|
{
|
|
uint8_t tmp1 = buffer[i+0];
|
|
uint8_t tmp2 = buffer[i+1];
|
|
buffer[i+0] = buffer[i+3];
|
|
buffer[i+1] = buffer[i+2];
|
|
buffer[i+2] = tmp2;
|
|
buffer[i+3] = tmp1;
|
|
}
|
|
#endif
|
|
}
|
|
} // Util
|