1/* 2 * This file is part of Libav. 3 * 4 * Libav is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * Libav 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 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with Libav; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19#include "cpu.h" 20#include "config.h" 21 22int av_get_cpu_flags(void) 23{ 24 static int flags, checked; 25 26 if (checked) 27 return flags; 28 29 if (ARCH_ARM) flags = ff_get_cpu_flags_arm(); 30 if (ARCH_PPC) flags = ff_get_cpu_flags_ppc(); 31 if (ARCH_X86) flags = ff_get_cpu_flags_x86(); 32 33 checked = 1; 34 return flags; 35} 36 37#ifdef TEST 38 39#undef printf 40#include <stdio.h> 41 42static const struct { 43 int flag; 44 const char *name; 45} cpu_flag_tab[] = { 46#if ARCH_ARM 47 { AV_CPU_FLAG_IWMMXT, "iwmmxt" }, 48#elif ARCH_PPC 49 { AV_CPU_FLAG_ALTIVEC, "altivec" }, 50#elif ARCH_X86 51 { AV_CPU_FLAG_MMX, "mmx" }, 52 { AV_CPU_FLAG_MMX2, "mmx2" }, 53 { AV_CPU_FLAG_SSE, "sse" }, 54 { AV_CPU_FLAG_SSE2, "sse2" }, 55 { AV_CPU_FLAG_SSE2SLOW, "sse2(slow)" }, 56 { AV_CPU_FLAG_SSE3, "sse3" }, 57 { AV_CPU_FLAG_SSE3SLOW, "sse3(slow)" }, 58 { AV_CPU_FLAG_SSSE3, "ssse3" }, 59 { AV_CPU_FLAG_ATOM, "atom" }, 60 { AV_CPU_FLAG_SSE4, "sse4.1" }, 61 { AV_CPU_FLAG_SSE42, "sse4.2" }, 62 { AV_CPU_FLAG_AVX, "avx" }, 63 { AV_CPU_FLAG_XOP, "xop" }, 64 { AV_CPU_FLAG_FMA4, "fma4" }, 65 { AV_CPU_FLAG_3DNOW, "3dnow" }, 66 { AV_CPU_FLAG_3DNOWEXT, "3dnowext" }, 67#endif 68 { 0 } 69}; 70 71int main(void) 72{ 73 int cpu_flags = av_get_cpu_flags(); 74 int i; 75 76 printf("cpu_flags = 0x%08X\n", cpu_flags); 77 printf("cpu_flags ="); 78 for (i = 0; cpu_flag_tab[i].flag; i++) 79 if (cpu_flags & cpu_flag_tab[i].flag) 80 printf(" %s", cpu_flag_tab[i].name); 81 printf("\n"); 82 83 return 0; 84} 85 86#endif 87