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Cache detected CPU flags

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Originally committed as revision 25085 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-09-09 18:51:49 +00:00
parent 9275438a19
commit a3f0d2b967
1 changed files with 11 additions and 4 deletions
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15
libavutil/cpu.c
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@ -21,10 +21,17 @@
int av_get_cpu_flags(void)
{
if (ARCH_ARM) return ff_get_cpu_flags_arm();
if (ARCH_PPC) return ff_get_cpu_flags_ppc();
if (ARCH_X86) return ff_get_cpu_flags_x86();
return 0;
static int flags, checked;
if (checked)
return flags;
if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
if (ARCH_X86) flags = ff_get_cpu_flags_x86();
checked = 1;
return flags;
}
#ifdef TEST