mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-12-23 14:21:57 +00:00
106 lines
No EOL
3 KiB
C++
106 lines
No EOL
3 KiB
C++
/*
|
|
KVMGFX Client - A KVM Client for VGA Passthrough
|
|
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free Software
|
|
Foundation; either version 2 of the License, or (at your option) any later
|
|
version.
|
|
|
|
This program is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
|
|
PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
|
Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#pragma once
|
|
#include <string>
|
|
#include <assert.h>
|
|
#include <inttypes.h>
|
|
#include <tmmintrin.h>
|
|
|
|
#include "common\debug.h"
|
|
|
|
class Util
|
|
{
|
|
public:
|
|
static std::string GetSystemRoot()
|
|
{
|
|
std::string defaultPath;
|
|
|
|
size_t pathSize;
|
|
char *libPath;
|
|
|
|
if (_dupenv_s(&libPath, &pathSize, "SystemRoot") != 0)
|
|
{
|
|
DEBUG_ERROR("Unable to get the SystemRoot environment variable");
|
|
return defaultPath;
|
|
}
|
|
|
|
if (!pathSize)
|
|
{
|
|
DEBUG_ERROR("The SystemRoot environment variable is not set");
|
|
return defaultPath;
|
|
}
|
|
#ifdef _WIN64
|
|
defaultPath = std::string(libPath) + "\\System32";
|
|
#else
|
|
if (IsWow64())
|
|
{
|
|
defaultPath = std::string(libPath) + "\\Syswow64";
|
|
}
|
|
else
|
|
{
|
|
defaultPath = std::string(libPath) + "\\System32";
|
|
}
|
|
#endif
|
|
return defaultPath;
|
|
}
|
|
|
|
static inline void BGRAtoRGB(uint8_t * orig, size_t imagesize, uint8_t * dest)
|
|
{
|
|
assert((uintptr_t)orig % 16 == 0);
|
|
assert((uintptr_t)dest % 16 == 0);
|
|
assert(imagesize % 16 == 0);
|
|
|
|
__m128i mask_right = _mm_set_epi8
|
|
(
|
|
12, 13, 14, 8,
|
|
9, 10, 4, 5,
|
|
6, 0, 1, 2,
|
|
-128, -128, -128, -128
|
|
);
|
|
|
|
__m128i mask_left = _mm_set_epi8
|
|
(
|
|
-128, -128, -128, -128,
|
|
12, 13, 14, 8,
|
|
9, 10, 4, 5,
|
|
6, 0, 1, 2
|
|
);
|
|
|
|
|
|
uint8_t *end = orig + imagesize * 4;
|
|
for (; orig != end; orig += 64, dest += 48)
|
|
{
|
|
_mm_prefetch((char *)(orig + 128), _MM_HINT_NTA);
|
|
_mm_prefetch((char *)(orig + 192), _MM_HINT_NTA);
|
|
|
|
__m128i v0 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)&orig[0 ]), mask_right);
|
|
__m128i v1 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)&orig[16]), mask_left );
|
|
__m128i v2 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)&orig[32]), mask_left );
|
|
__m128i v3 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)&orig[48]), mask_left );
|
|
|
|
v0 = _mm_alignr_epi8(v1, v0, 4);
|
|
v1 = _mm_alignr_epi8(v2, _mm_slli_si128(v1, 4), 8);
|
|
v2 = _mm_alignr_epi8(v3, _mm_slli_si128(v2, 4), 12);
|
|
|
|
_mm_stream_si128((__m128i *)&dest[0 ], v0);
|
|
_mm_stream_si128((__m128i *)&dest[16], v1);
|
|
_mm_stream_si128((__m128i *)&dest[32], v2);
|
|
}
|
|
}
|
|
}; |