[gstreamer-bugs] [Bug 320820] Investigate on the usage of -DRUNTIME_CPUDETECT

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-ffmpeg | Ver: 0.8.x





------- Additional Comments From Ronald Bultje  2005-11-13 15:57 -------
[rbultje at localhost ffmpeg]$ grep -r RUNTIME_CPUDETECT .
./libavutil/common.h:#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
./libavcodec/libpostproc/postprocess.c:#if !defined (HAVE_MMX) || defined
(RUNTIME_CPUDETECT)
./libavcodec/libpostproc/postprocess.c:#if (defined (HAVE_MMX) && !defined
(HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
./libavcodec/libpostproc/postprocess.c:#if defined (HAVE_MMX2) || defined
(RUNTIME_CPUDETECT)
./libavcodec/libpostproc/postprocess.c:#if (defined (HAVE_3DNOW) && !defined
(HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
./libavcodec/libpostproc/postprocess.c:#ifdef RUNTIME_CPUDETECT
./libavcodec/libpostproc/postprocess.c:#else //RUNTIME_CPUDETECT
./libavcodec/libpostproc/postprocess.c:#endif //!RUNTIME_CPUDETECT

It's only used in libpostproc and in libavutil/common.h for a 3-byte-at-once
assignment. Although useful, I seriously doubt this does what it should do. I
know, for sure, that ffmpeg does mmx CPU detection itself.

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