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| author | Måns Rullgård <mans@mansr.com> | 2010-09-09 18:51:49 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2010-09-09 18:51:49 +0000 |
| commit | a3f0d2b9674b4bbbdb6eb28a1e600ba324a5853b (patch) | |
| tree | afc13d82a50013393d6c4c8299bce39d742d5486 /libavutil/cpu.c | |
| parent | 9275438a19c02264762d550a077bbf83acd63f3f (diff) | |
Cache detected CPU flags
Originally committed as revision 25085 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavutil/cpu.c')
| -rw-r--r-- | libavutil/cpu.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/libavutil/cpu.c b/libavutil/cpu.c index 34530eebaf..1548530b87 100644 --- a/libavutil/cpu.c +++ b/libavutil/cpu.c @@ -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 |