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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-05-25 06:32:23 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-05-25 06:32:45 +0200 |
| commit | 034fc7bf129152b94958f4b74b9c81590350ce59 (patch) | |
| tree | df83c0f966ce07a832588a54dca4e57ba97575be /libavutil | |
| parent | d1adad3cca407f493c3637e20ecd4f7124e69212 (diff) | |
| parent | 9bbd6a4cd89da4bfc9fd36fea5777a539a542b40 (diff) | |
Merge remote-tracking branch 'qatar/master'
* qatar/master: (22 commits)
configure: enable memalign_hack automatically when needed
swscale: unbreak the build on non-x86 systems.
swscale: remove if(bitexact) branch from functions.
swscale: remove if(canMMX2BeUsed) conditional.
swscale: remove swScale_{c,MMX,MMX2} duplication.
swscale: use emms_c().
Move emms_c() from libavcodec to libavutil.
tiff: set palette in the context when specified in TIFF_PAL tag
rtsp: use strtoul to parse rtptime and seq values.
pgssubdec: fix incorrect colors.
dvdsubdec: fix incorrect colors.
ape: Allow demuxing of files with metadata tags.
swscale: remove dead macro WRITEBGR24OLD.
swscale: remove AMD3DNOW "optimizations".
swscale: remove duplicate code in ppc/ subdirectory.
swscale: remove duplicated x86/ functions.
swscale: force --enable-runtime-cpudetect and remove SWS_CPU_CAPS_*.
vsrc_buffer.h: add file doxy
vsrc_buffer: tweak error message in init()
msmpeg4: reindent.
...
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/internal.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libavutil/internal.h b/libavutil/internal.h index b5cc2a6cd1..51bf40936e 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -37,6 +37,7 @@ #include "config.h" #include "attributes.h" #include "timer.h" +#include "cpu.h" #ifndef attribute_align_arg #if ARCH_X86_32 && AV_GCC_VERSION_AT_LEAST(4,2) @@ -222,4 +223,19 @@ # define ONLY_IF_THREADS_ENABLED(x) NULL #endif +#if HAVE_MMX +/** + * Empty mmx state. + * this must be called between any dsp function and float/double code. + * for example sin(); dsp->idct_put(); emms_c(); cos() + */ +static av_always_inline void emms_c(void) +{ + if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) + __asm__ volatile ("emms" ::: "memory"); +} +#else /* HAVE_MMX */ +#define emms_c() +#endif /* HAVE_MMX */ + #endif /* AVUTIL_INTERNAL_H */ |