57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/* -*- tab-width: 4; -*- */
|
|
/* vi: set sw=2 ts=4 expandtab: */
|
|
|
|
/* $Id: 02ea6de2d8db512ca3af08f48b98ab5f6c35e7e5 $ */
|
|
|
|
/*
|
|
* Copyright 2010-2020 The Khronos Group Inc.
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <KHR/khrplatform.h>
|
|
#include "ktx.h"
|
|
|
|
/*
|
|
* SwapEndian16: Swaps endianness in an array of 16-bit values
|
|
*/
|
|
void
|
|
_ktxSwapEndian16(khronos_uint16_t* pData16, ktx_size_t count)
|
|
{
|
|
for (ktx_size_t i = 0; i < count; ++i)
|
|
{
|
|
khronos_uint16_t x = *pData16;
|
|
*pData16++ = (x << 8) | (x >> 8);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* SwapEndian32: Swaps endianness in an array of 32-bit values
|
|
*/
|
|
void
|
|
_ktxSwapEndian32(khronos_uint32_t* pData32, ktx_size_t count)
|
|
{
|
|
for (ktx_size_t i = 0; i < count; ++i)
|
|
{
|
|
khronos_uint32_t x = *pData32;
|
|
*pData32++ = (x << 24) | ((x & 0xFF00) << 8) | ((x & 0xFF0000) >> 8) | (x >> 24);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* SwapEndian364: Swaps endianness in an array of 32-bit values
|
|
*/
|
|
void
|
|
_ktxSwapEndian64(khronos_uint64_t* pData64, ktx_size_t count)
|
|
{
|
|
for (ktx_size_t i = 0; i < count; ++i)
|
|
{
|
|
khronos_uint64_t x = *pData64;
|
|
*pData64++ = (x << 56) | ((x & 0xFF00) << 40) | ((x & 0xFF0000) << 24)
|
|
| ((x & 0xFF000000) << 8 ) | ((x & 0xFF00000000) >> 8)
|
|
| ((x & 0xFF0000000000) >> 24)
|
|
| ((x & 0xFF000000000000) << 40) | (x >> 56);
|
|
}
|
|
}
|
|
|
|
|
|
|