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eba586b0d9
The Atom has SSSE3 support, which is useful in many cases, but sometimes the SSSE3 version is slower than the SSE2 equivalent on the Atom, but is generally faster on other processors supporting SSSE3. This flag allows for selectively disabling certain SSSE3 functions on the Atom.
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "cpu.h"
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#include "config.h"
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int av_get_cpu_flags(void)
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{
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static int flags, checked;
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if (checked)
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return flags;
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if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
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if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
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if (ARCH_X86) flags = ff_get_cpu_flags_x86();
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checked = 1;
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return flags;
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}
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#ifdef TEST
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#undef printf
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#include <stdio.h>
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int main(void)
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{
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int cpu_flags = av_get_cpu_flags();
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printf("cpu_flags = 0x%08X\n", cpu_flags);
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printf("cpu_flags = %s%s%s%s%s%s%s%s%s%s%s%s%s\n",
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#if ARCH_ARM
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cpu_flags & AV_CPU_FLAG_IWMMXT ? "IWMMXT " : "",
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#elif ARCH_PPC
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cpu_flags & AV_CPU_FLAG_ALTIVEC ? "ALTIVEC " : "",
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#elif ARCH_X86
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cpu_flags & AV_CPU_FLAG_MMX ? "MMX " : "",
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cpu_flags & AV_CPU_FLAG_MMX2 ? "MMX2 " : "",
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cpu_flags & AV_CPU_FLAG_SSE ? "SSE " : "",
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cpu_flags & AV_CPU_FLAG_SSE2 ? "SSE2 " : "",
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cpu_flags & AV_CPU_FLAG_SSE2SLOW ? "SSE2(slow) " : "",
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cpu_flags & AV_CPU_FLAG_SSE3 ? "SSE3 " : "",
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cpu_flags & AV_CPU_FLAG_SSE3SLOW ? "SSE3(slow) " : "",
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cpu_flags & AV_CPU_FLAG_SSSE3 ? "SSSE3 " : "",
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cpu_flags & AV_CPU_FLAG_ATOM ? "Atom " : "",
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cpu_flags & AV_CPU_FLAG_SSE4 ? "SSE4.1 " : "",
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cpu_flags & AV_CPU_FLAG_SSE42 ? "SSE4.2 " : "",
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cpu_flags & AV_CPU_FLAG_AVX ? "AVX " : "",
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cpu_flags & AV_CPU_FLAG_3DNOW ? "3DNow " : "",
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cpu_flags & AV_CPU_FLAG_3DNOWEXT ? "3DNowExt " : "");
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#endif
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return 0;
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}
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#endif
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