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https://chromium.googlesource.com/libyuv/libyuv
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aed1cc94c1
git-svn-id: http://libyuv.googlecode.com/svn/trunk@2 16f28f9a-4ce2-e073-06de-1de4eb20be90
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
/*
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* Copyright (c) 2011 The LibYuv project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef LIBYUV_SOURCE_CPU_ID_H_
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#define LIBYUV_SOURCE_CPU_ID_H_
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#include <string>
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#include "basic_types.h"
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namespace libyuv {
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#ifdef CPU_X86
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void cpuid(int cpu_info[4], int info_type);
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#endif
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class CpuInfo {
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public:
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// These flags are only valid on x86 processors
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static const int kCpuHasSSE2 = 1;
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static const int kCpuHasSSSE3 = 2;
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// SIMD support on ARM processors
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static const int kCpuHasNEON = 4;
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// Detect CPU has SSE2 etc.
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static bool TestCpuFlag(int flag);
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// Detect CPU vendor: "GenuineIntel" or "AuthenticAMD"
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static std::string GetCpuVendor();
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// For testing, allow CPU flags to be disabled.
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static void MaskCpuFlagsForTest(int enable_flags);
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private:
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// Global lock for the cpu initialization
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static bool cpu_info_initialized_;
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static int cpu_info_;
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static void InitCpuFlags();
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DISALLOW_IMPLICIT_CONSTRUCTORS(CpuInfo);
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};
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} // namespace libyuv
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#endif // LIBYUV_SOURCE_CPU_ID_H_
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