1/* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CPU_FEATURES_WRAPPER_H_ 12#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CPU_FEATURES_WRAPPER_H_ 13 14#if defined(__cplusplus) || defined(c_plusplus) 15extern "C" { 16#endif 17 18#include "webrtc/typedefs.h" 19 20// List of features in x86. 21typedef enum { 22 kSSE2, 23 kSSE3 24} CPUFeature; 25 26// List of features in ARM. 27enum { 28 kCPUFeatureARMv7 = (1 << 0), 29 kCPUFeatureVFPv3 = (1 << 1), 30 kCPUFeatureNEON = (1 << 2), 31 kCPUFeatureLDREXSTREX = (1 << 3) 32}; 33 34typedef int (*WebRtc_CPUInfo)(CPUFeature feature); 35 36// Returns true if the CPU supports the feature. 37extern WebRtc_CPUInfo WebRtc_GetCPUInfo; 38 39// No CPU feature is available => straight C path. 40extern WebRtc_CPUInfo WebRtc_GetCPUInfoNoASM; 41 42// Return the features in an ARM device. 43// It detects the features in the hardware platform, and returns supported 44// values in the above enum definition as a bitmask. 45extern uint64_t WebRtc_GetCPUFeaturesARM(void); 46 47#if defined(__cplusplus) || defined(c_plusplus) 48} // extern "C" 49#endif 50 51#endif // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CPU_FEATURES_WRAPPER_H_ 52