src/libFLAC/cpu.c

   1 /* libFLAC - Free Lossless Audio Codec library
   2  * Copyright (C) 2001,2002  Josh Coalson
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA  02111-1307, USA.
  18  */
  19
  20 #include "private/cpu.h"
  21 #include<stdlib.h>
  22 #include<stdio.h>
  23
  24 const unsigned FLAC__CPUINFO_IA32_CPUID_CMOV = 0x00008000;
  25 const unsigned FLAC__CPUINFO_IA32_CPUID_MMX = 0x00800000;
  26 const unsigned FLAC__CPUINFO_IA32_CPUID_FXSR = 0x01000000;
  27 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE = 0x02000000;
  28 const unsigned FLAC__CPUINFO_IA32_CPUID_SSE2 = 0x04000000;
  29
  30 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW = 0x80000000;
  31 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW = 0x40000000;
  32 const unsigned FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX = 0x00400000;
  33
  34
  35 void FLAC__cpu_info(FLAC__CPUInfo *info)
  36 {
  37 #ifdef FLAC__CPU_IA32
  38         info->type = FLAC__CPUINFO_TYPE_IA32;
  39 #if !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
  40         info->use_asm = true;
  41         {
  42                 unsigned cpuid = FLAC__cpu_info_asm_ia32();
  43                 info->data.ia32.cmov = (cpuid & FLAC__CPUINFO_IA32_CPUID_CMOV)? true : false;
  44                 info->data.ia32.mmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_MMX)? true : false;
  45                 info->data.ia32.fxsr = (cpuid & FLAC__CPUINFO_IA32_CPUID_FXSR)? true : false;
  46                 info->data.ia32.sse = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE)? true : false;
  47                 info->data.ia32.sse2 = (cpuid & FLAC__CPUINFO_IA32_CPUID_SSE2)? true : false;
  48
  49 #ifndef FLAC__SSE_OS
  50                 info->data.ia32.fxsr = info->data.ia32.sse = info->data.ia32.sse2 = false;
  51 #endif
  52
  53 #ifdef FLAC__USE_3DNOW
  54                 cpuid = FLAC__cpu_info_extended_amd_asm_ia32();
  55                 info->data.ia32._3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_3DNOW)? true : false;
  56                 info->data.ia32.ext3dnow = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXT3DNOW)? true : false;
  57                 info->data.ia32.extmmx = (cpuid & FLAC__CPUINFO_IA32_CPUID_EXTENDED_AMD_EXTMMX)? true : false;
  58 #else
  59                 info->data.ia32._3dnow = info->data.ia32.ext3dnow = info->data.ia32.extmmx = false;
  60 #endif
  61         }
  62 #else
  63         info->use_asm = false;
  64 #endif
  65 #else
  66         info->type = FLAC__CPUINFO_TYPE_UNKNOWN;
  67         info->use_asm = false;
  68 #endif
  69 }