mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
138 lines
4.0 KiB
138 lines
4.0 KiB
/////////////////////////////////////////////////////////////////////////// |
|
// |
|
// Copyright (c) 2009-2014 DreamWorks Animation LLC. |
|
// |
|
// All rights reserved. |
|
// |
|
// Redistribution and use in source and binary forms, with or without |
|
// modification, are permitted provided that the following conditions are |
|
// met: |
|
// * Redistributions of source code must retain the above copyright |
|
// notice, this list of conditions and the following disclaimer. |
|
// * Redistributions in binary form must reproduce the above |
|
// copyright notice, this list of conditions and the following disclaimer |
|
// in the documentation and/or other materials provided with the |
|
// distribution. |
|
// * Neither the name of DreamWorks Animation nor the names of |
|
// its contributors may be used to endorse or promote products derived |
|
// from this software without specific prior written permission. |
|
// |
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
// |
|
/////////////////////////////////////////////////////////////////////////// |
|
|
|
#include "ImfSimd.h" |
|
#include "ImfSystemSpecific.h" |
|
#include "ImfNamespace.h" |
|
#include "OpenEXRConfig.h" |
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER |
|
|
|
namespace { |
|
#if defined(IMF_HAVE_SSE2) && defined(__GNUC__) && !defined(__ANDROID__) |
|
|
|
// Helper functions for gcc + SSE enabled |
|
void cpuid(int n, int &eax, int &ebx, int &ecx, int &edx) |
|
{ |
|
__asm__ __volatile__ ( |
|
"cpuid" |
|
: /* Output */ "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) |
|
: /* Input */ "a"(n) |
|
: /* Clobber */); |
|
} |
|
|
|
#else // IMF_HAVE_SSE2 && __GNUC__ |
|
|
|
// Helper functions for generic compiler - all disabled |
|
void cpuid(int n, int &eax, int &ebx, int &ecx, int &edx) |
|
{ |
|
eax = ebx = ecx = edx = 0; |
|
} |
|
|
|
#endif // IMF_HAVE_SSE2 && __GNUC__ |
|
|
|
|
|
#ifdef OPENEXR_IMF_HAVE_GCC_INLINE_ASM_AVX |
|
|
|
void xgetbv(int n, int &eax, int &edx) |
|
{ |
|
__asm__ __volatile__ ( |
|
"xgetbv" |
|
: /* Output */ "=a"(eax), "=d"(edx) |
|
: /* Input */ "c"(n) |
|
: /* Clobber */); |
|
} |
|
|
|
#else // OPENEXR_IMF_HAVE_GCC_INLINE_ASM_AVX |
|
|
|
void xgetbv(int n, int &eax, int &edx) |
|
{ |
|
eax = edx = 0; |
|
} |
|
|
|
#endif // OPENEXR_IMF_HAVE_GCC_INLINE_ASM_AVX |
|
|
|
} // namespace |
|
|
|
CpuId::CpuId(): |
|
sse2(false), |
|
sse3(false), |
|
ssse3(false), |
|
sse4_1(false), |
|
sse4_2(false), |
|
avx(false), |
|
f16c(false) |
|
{ |
|
bool osxsave = false; |
|
int max = 0; |
|
int eax, ebx, ecx, edx; |
|
|
|
cpuid(0, max, ebx, ecx, edx); |
|
if (max > 0) |
|
{ |
|
cpuid(1, eax, ebx, ecx, edx); |
|
sse2 = ( edx & (1<<26) ); |
|
sse3 = ( ecx & (1<< 0) ); |
|
ssse3 = ( ecx & (1<< 9) ); |
|
sse4_1 = ( ecx & (1<<19) ); |
|
sse4_2 = ( ecx & (1<<20) ); |
|
osxsave = ( ecx & (1<<27) ); |
|
avx = ( ecx & (1<<28) ); |
|
f16c = ( ecx & (1<<29) ); |
|
|
|
if (!osxsave) |
|
{ |
|
avx = f16c = false; |
|
} |
|
else |
|
{ |
|
xgetbv(0, eax, edx); |
|
// eax bit 1 - SSE managed, bit 2 - AVX managed |
|
if ((eax & 6) != 6) |
|
{ |
|
avx = f16c = false; |
|
} |
|
} |
|
} |
|
|
|
#if defined(IMF_HAVE_SSE2) && defined(__ANDROID__) |
|
sse2 = true; |
|
sse3 = true; |
|
#ifdef __x86_64__ |
|
ssse3 = true; |
|
sse4_1 = true; |
|
#endif |
|
#endif |
|
} |
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
|
|
|