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/constructormagic.h" 32 33 namespace cricket { 34 35 class 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 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(CpuInfo); 69 }; 70 71 // Detect an Intel Core I5 or better such as 4th generation Macbook Air. 72 bool IsCoreIOrBetter(); 73 74 } // namespace cricket 75 76 #endif // TALK_MEDIA_BASE_CPUID_H_ 77