1/*
2 * libjingle
3 * Copyright 2011 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef TALK_MEDIA_BASE_CPUID_H_
29#define TALK_MEDIA_BASE_CPUID_H_
30
31#include "webrtc/base/basictypes.h"  // For DISALLOW_IMPLICIT_CONSTRUCTORS
32
33namespace cricket {
34
35class CpuInfo {
36 public:
37  // The following flags must match libyuv/cpu_id.h values.
38  // Internal flag to indicate cpuid requires initialization.
39  static const int kCpuInit = 0x1;
40
41  // These flags are only valid on ARM processors.
42  static const int kCpuHasARM = 0x2;
43  static const int kCpuHasNEON = 0x4;
44  // 0x8 reserved for future ARM flag.
45
46  // These flags are only valid on x86 processors.
47  static const int kCpuHasX86 = 0x10;
48  static const int kCpuHasSSE2 = 0x20;
49  static const int kCpuHasSSSE3 = 0x40;
50  static const int kCpuHasSSE41 = 0x80;
51  static const int kCpuHasSSE42 = 0x100;
52  static const int kCpuHasAVX = 0x200;
53  static const int kCpuHasAVX2 = 0x400;
54  static const int kCpuHasERMS = 0x800;
55
56  // These flags are only valid on MIPS processors.
57  static const int kCpuHasMIPS = 0x1000;
58  static const int kCpuHasMIPS_DSP = 0x2000;
59  static const int kCpuHasMIPS_DSPR2 = 0x4000;
60
61  // Detect CPU has SSE2 etc.
62  static bool TestCpuFlag(int flag);
63
64  // For testing, allow CPU flags to be disabled.
65  static void MaskCpuFlagsForTest(int enable_flags);
66
67 private:
68  DISALLOW_IMPLICIT_CONSTRUCTORS(CpuInfo);
69};
70
71// Detect an Intel Core I5 or better such as 4th generation Macbook Air.
72bool IsCoreIOrBetter();
73
74}  // namespace cricket
75
76#endif  // TALK_MEDIA_BASE_CPUID_H_
77