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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 23:15:37 +0200 |
| commit | e68114868ffdca34694345599db2c452d7f54a94 (patch) | |
| tree | ec67b5aa98a22dbecb6d1ebdb391762bc717f3e0 | |
| parent | 4533e8b30a384e8b9bff9d228a028c1f58b4c6aa (diff) | |
| download | ffmpeg-e68114868ffdca34694345599db2c452d7f54a94.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 a1d1547033..85bc2d6499 100644 --- a/libavutil/cpu.c +++ b/libavutil/cpu.c @@ -23,6 +23,24 @@ 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; } |