Libav 0.7.1
libavutil/cpu.c
Go to the documentation of this file.
00001 /*
00002  * This file is part of Libav.
00003  *
00004  * Libav is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * Libav is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with Libav; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00017  */
00018 
00019 #include "cpu.h"
00020 #include "config.h"
00021 
00022 int av_get_cpu_flags(void)
00023 {
00024     static int flags, checked;
00025 
00026     if (checked)
00027         return flags;
00028 
00029     if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
00030     if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
00031     if (ARCH_X86) flags = ff_get_cpu_flags_x86();
00032 
00033     checked = 1;
00034     return flags;
00035 }
00036 
00037 #ifdef TEST
00038 
00039 #undef printf
00040 #include <stdio.h>
00041 
00042 int main(void)
00043 {
00044     int cpu_flags = av_get_cpu_flags();
00045 
00046     printf("cpu_flags = 0x%08X\n", cpu_flags);
00047     printf("cpu_flags = %s%s%s%s%s%s%s%s%s%s%s%s%s\n",
00048 #if   ARCH_ARM
00049            cpu_flags & AV_CPU_FLAG_IWMMXT   ? "IWMMXT "     : "",
00050 #elif ARCH_PPC
00051            cpu_flags & AV_CPU_FLAG_ALTIVEC  ? "ALTIVEC "    : "",
00052 #elif ARCH_X86
00053            cpu_flags & AV_CPU_FLAG_MMX      ? "MMX "        : "",
00054            cpu_flags & AV_CPU_FLAG_MMX2     ? "MMX2 "       : "",
00055            cpu_flags & AV_CPU_FLAG_SSE      ? "SSE "        : "",
00056            cpu_flags & AV_CPU_FLAG_SSE2     ? "SSE2 "       : "",
00057            cpu_flags & AV_CPU_FLAG_SSE2SLOW ? "SSE2(slow) " : "",
00058            cpu_flags & AV_CPU_FLAG_SSE3     ? "SSE3 "       : "",
00059            cpu_flags & AV_CPU_FLAG_SSE3SLOW ? "SSE3(slow) " : "",
00060            cpu_flags & AV_CPU_FLAG_SSSE3    ? "SSSE3 "      : "",
00061            cpu_flags & AV_CPU_FLAG_ATOM     ? "Atom "       : "",
00062            cpu_flags & AV_CPU_FLAG_SSE4     ? "SSE4.1 "     : "",
00063            cpu_flags & AV_CPU_FLAG_SSE42    ? "SSE4.2 "     : "",
00064            cpu_flags & AV_CPU_FLAG_AVX      ? "AVX "        : "",
00065            cpu_flags & AV_CPU_FLAG_3DNOW    ? "3DNow "      : "",
00066            cpu_flags & AV_CPU_FLAG_3DNOWEXT ? "3DNowExt "   : "");
00067 #endif
00068     return 0;
00069 }
00070 
00071 #endif