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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-05-20 05:23:52 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-06-25 16:35:24 +0200 |
| commit | 332777970c8b430cd29cb945855c4cc3f20946ee (patch) | |
| tree | f1004229c24ef4983c3535f74ea1ce35681a7287 | |
| parent | 62b9c99aec0f641e289e347d917b7b474d21fa5b (diff) | |
| download | ffmpeg-332777970c8b430cd29cb945855c4cc3f20946ee.tar.gz | |
avutil/cpu: force mmx on selection of higher x86 SIMD features
Fixes various runtime failures with manually set flags that represent no
existing CPU
Fixes Ticket3653
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 6310eb8010b7a3b3016e297132380cbd4e3d2d10)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavutil/cpu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libavutil/cpu.c b/libavutil/cpu.c index cdea209d8d..55e8b4e900 100644 --- a/libavutil/cpu.c +++ b/libavutil/cpu.c @@ -45,6 +45,24 @@ static int flags, checked; void av_force_cpu_flags(int arg){ + if ( (arg & ( AV_CPU_FLAG_3DNOW | + AV_CPU_FLAG_3DNOWEXT | + AV_CPU_FLAG_SSE | + AV_CPU_FLAG_SSE2 | + AV_CPU_FLAG_SSE2SLOW | + AV_CPU_FLAG_SSE3 | + AV_CPU_FLAG_SSE3SLOW | + AV_CPU_FLAG_SSSE3 | + AV_CPU_FLAG_SSE4 | + AV_CPU_FLAG_SSE42 | + AV_CPU_FLAG_AVX | + AV_CPU_FLAG_XOP | + AV_CPU_FLAG_FMA4 )) + && !(arg & AV_CPU_FLAG_MMX)) { + av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n"); + arg |= AV_CPU_FLAG_MMX; + } + flags = arg; checked = arg != -1; } |