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