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// File: crn_utils.cpp
#include "crn_core.h"
#include "crn_utils.h"
namespace crnlib {
namespace utils {
void endian_switch_words(uint16* p, uint num) {
uint16* p_end = p + num;
while (p != p_end) {
uint16 k = *p;
*p++ = swap16(k);
}
}
void endian_switch_dwords(uint32* p, uint num) {
uint32* p_end = p + num;
while (p != p_end) {
uint32 k = *p;
*p++ = swap32(k);
}
}
void copy_words(uint16* pDst, const uint16* pSrc, uint num, bool endian_switch) {
if (!endian_switch)
memcpy(pDst, pSrc, num << 1U);
else {
uint16* pDst_end = pDst + num;
while (pDst != pDst_end)
*pDst++ = swap16(*pSrc++);
}
}
void copy_dwords(uint32* pDst, const uint32* pSrc, uint num, bool endian_switch) {
if (!endian_switch)
memcpy(pDst, pSrc, num << 2U);
else {
uint32* pDst_end = pDst + num;
while (pDst != pDst_end)
*pDst++ = swap32(*pSrc++);
}
}
uint compute_max_mips(uint width, uint height) {
if ((width | height) == 0)
return 0;
uint num_mips = 1;
while ((width > 1U) || (height > 1U)) {
width >>= 1U;
height >>= 1U;
num_mips++;
}
return num_mips;
}
} // namespace utils
} // namespace crnlib
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