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Diffstat (limited to 'third_party/libwebrtc/system_wrappers/include/cpu_features_wrapper.h')
-rw-r--r-- | third_party/libwebrtc/system_wrappers/include/cpu_features_wrapper.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/third_party/libwebrtc/system_wrappers/include/cpu_features_wrapper.h b/third_party/libwebrtc/system_wrappers/include/cpu_features_wrapper.h new file mode 100644 index 0000000000..612b4a5d6b --- /dev/null +++ b/third_party/libwebrtc/system_wrappers/include/cpu_features_wrapper.h @@ -0,0 +1,42 @@ +/* + * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ +#define SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ + +#include <stdint.h> + +namespace webrtc { + +// List of features in x86. +typedef enum { kSSE2, kSSE3, kAVX2 } CPUFeature; + +// List of features in ARM. +enum { + kCPUFeatureARMv7 = (1 << 0), + kCPUFeatureVFPv3 = (1 << 1), + kCPUFeatureNEON = (1 << 2), + kCPUFeatureLDREXSTREX = (1 << 3) +}; + +// Returns true if the CPU supports the feature. +int GetCPUInfo(CPUFeature feature); + +// No CPU feature is available => straight C path. +int GetCPUInfoNoASM(CPUFeature feature); + +// Return the features in an ARM device. +// It detects the features in the hardware platform, and returns supported +// values in the above enum definition as a bitmask. +uint64_t GetCPUFeaturesARM(void); + +} // namespace webrtc + +#endif // SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ |