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 SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ 12 #define SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ 13 14 #include <stdint.h> 15 16 #if defined(__cplusplus) || defined(c_plusplus) 17 extern "C" { 18 #endif 19 20 // List of features in x86. 21 typedef enum { kSSE2, kSSE3 } CPUFeature; 22 23 // List of features in ARM. 24 enum { 25 kCPUFeatureARMv7 = (1 << 0), 26 kCPUFeatureVFPv3 = (1 << 1), 27 kCPUFeatureNEON = (1 << 2), 28 kCPUFeatureLDREXSTREX = (1 << 3) 29 }; 30 31 typedef int (*WebRtc_CPUInfo)(CPUFeature feature); 32 33 // Returns true if the CPU supports the feature. 34 extern WebRtc_CPUInfo WebRtc_GetCPUInfo; 35 36 // No CPU feature is available => straight C path. 37 extern WebRtc_CPUInfo WebRtc_GetCPUInfoNoASM; 38 39 // Return the features in an ARM device. 40 // It detects the features in the hardware platform, and returns supported 41 // values in the above enum definition as a bitmask. 42 extern uint64_t WebRtc_GetCPUFeaturesARM(void); 43 44 #if defined(__cplusplus) || defined(c_plusplus) 45 } // extern "C" 46 #endif 47 48 #endif // SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_ 49