diff options
| author | Kieran Kunhya <kierank@ob-encoder.com> | 2013-10-25 07:53:56 -0500 |
|---|---|---|
| committer | Derek Buitenhuis <derek.buitenhuis@gmail.com> | 2013-10-25 19:36:55 +0100 |
| commit | 4d6ee0725553a43ba88d6f8327ebcf8f1c5ae8d4 (patch) | |
| tree | d816bbf9d9dee4bc7e5c8f8b5074b0136d4e5c17 /libavutil/x86/cpu.c | |
| parent | 7177df90a043bd59e172843fc7cb9e767080ea12 (diff) | |
libavutil: x86: Add AVX2 capable CPU detection.
Patch based on x264's AVX2 detection
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Diffstat (limited to 'libavutil/x86/cpu.c')
| -rw-r--r-- | libavutil/x86/cpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavutil/x86/cpu.c b/libavutil/x86/cpu.c index 3e946b8dc2..0e06d5deb2 100644 --- a/libavutil/x86/cpu.c +++ b/libavutil/x86/cpu.c @@ -134,6 +134,14 @@ int ff_get_cpu_flags_x86(void) if ((eax & 0x6) == 0x6) rval |= AV_CPU_FLAG_AVX; } +#if HAVE_AVX2 + if (max_std_level >= 7) { + cpuid(7, eax, ebx, ecx, edx); + if (ebx&0x00000020) + rval |= AV_CPU_FLAG_AVX2; + /* TODO: BMI1/2 */ + } +#endif /* HAVE_AVX2 */ #endif /* HAVE_AVX */ #endif /* HAVE_SSE */ } |