43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC 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 SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_
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#define SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_
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#include <stdint.h>
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namespace webrtc {
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// List of features in x86.
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typedef enum { kSSE2, kSSE3, kAVX2, kFMA3 } CPUFeature;
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// List of features in ARM.
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enum {
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kCPUFeatureARMv7 = (1 << 0),
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kCPUFeatureVFPv3 = (1 << 1),
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kCPUFeatureNEON = (1 << 2),
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kCPUFeatureLDREXSTREX = (1 << 3)
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};
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// Returns true if the CPU supports the feature.
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int GetCPUInfo(CPUFeature feature);
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// No CPU feature is available => straight C path.
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int GetCPUInfoNoASM(CPUFeature feature);
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// Return the features in an ARM device.
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// It detects the features in the hardware platform, and returns supported
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// values in the above enum definition as a bitmask.
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uint64_t GetCPUFeaturesARM(void);
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} // namespace webrtc
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#endif // SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_
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