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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-09-27 02:14:37 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-09-27 02:14:37 +0200 |
| commit | 7c1aba4f01a10915d356c7bc0c6bfed25cbb623e (patch) | |
| tree | a3452b5224630d3ea4ace5f2d143051c7aab5c8d /libavutil/x86/cpu.c | |
| parent | c2a016ad4d9c29285813ba5806189e63e063e0fb (diff) | |
| parent | 908f12f342341785bf0458e88a06d97a1af90339 (diff) | |
Merge remote-tracking branch 'qatar/master'
* qatar/master: (21 commits)
fate: allow testing with libavfilter disabled
x86: XOP/FMA4 CPU detection support
ws_snd: misc cosmetic clean-ups
ws_snd: remove the 2-bit ADPCM table and just subtract 2 instead.
ws_snd: use memcpy() and memset() instead of loops
ws_snd: use samples pointer for loop termination instead of a separate iterator variable.
ws_snd: make sure number of channels is 1
ws_snd: add some checks to prevent buffer overread or overwrite.
ws_snd: decode to AV_SAMPLE_FMT_U8 instead of S16.
flacdec: fix buffer size checking in get_metadata_size()
rtp: Simplify ff_rtp_get_payload_type
rtpenc: Add a payload type private option
rtp: Correct ff_rtp_get_payload_type documentation
avconv: replace all fprintf() by av_log().
avconv: change av_log verbosity from ERROR to FATAL for fatal errors.
cmdutils: replace fprintf() by av_log()
avtools: parse loglevel before all the other options.
oggdec: add support for Xiph's CELT codec
sol: return error if av_get_packet() fails.
cosmetics: reindent and pretty-print
...
Conflicts:
avconv.c
cmdutils.c
libavcodec/avcodec.h
libavcodec/version.h
libavformat/oggparsecelt.c
libavformat/utils.c
libavutil/avutil.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/x86/cpu.c')
| -rw-r--r-- | libavutil/x86/cpu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libavutil/x86/cpu.c b/libavutil/x86/cpu.c index 711d5d4097..bb3f1b325b 100644 --- a/libavutil/x86/cpu.c +++ b/libavutil/x86/cpu.c @@ -133,6 +133,15 @@ int ff_get_cpu_flags_x86(void) rval & AV_CPU_FLAG_SSE2 && !(ecx & 0x00000040)) { rval |= AV_CPU_FLAG_SSE2SLOW; } + + /* XOP and FMA4 use the AVX instruction coding scheme, so they can't be + * used unless the OS has AVX support. */ + if (rval & AV_CPU_FLAG_AVX) { + if (ecx & 0x00000800) + rval |= AV_CPU_FLAG_XOP; + if (ecx & 0x00010000) + rval |= AV_CPU_FLAG_FMA4; + } } if (!strncmp(vendor.c, "GenuineIntel", 12)) { |