mplayer had three ways of enabling CPU specific assembler routines:
a) Enable them at compile time; crash if the CPU can't handle it.
b) Enable them at compile time, but let the configure script detect
your CPU. Your binary will only crash if you try to run it on a
different system that has less features than yours.
This was the default, I think.
c) Runtime detection.
The implementation of b) and c) suck. a) is not really feasible (it
sucks for users). Remove all code related to this, and use libav's CPU
detection instead. Now the configure script will always enable CPU
specific features, and disable them at runtime if libav reports them
not as available.
One implication is that now the compiler is always expected to handle
SSE (etc.) inline assembly at runtime, unless it's explicitly disabled.
Only checks for x86 CPU specific features are kept, the rest is either
unused or barely used.
Get rid of all the dump -mpcu, -march etc. flags. Trust the compiler
to select decent settings.
Get rid of support for the following operating systems:
- BSD/OS (some ancient BSD fork)
- QNX (don't care)
- BeOS (dead, Haiku support is still welcome)
- AIX (don't care)
- HP-UX (don't care)
- OS/2 (dead, actual support has been removed a while ago)
Remove the configure code for detecting the endianness. Instead, use
the standard header <endian.h>, which can be used if _GNU_SOURCE or
_BSD_SOURCE is defined. (Maybe these changes should have been in a
separate commit.)
Since this is a quite violent code removal orgy, and I'm testing only
on x86 32 bit Linux, expect regressions.
Run OS support for SSE check only for runtime CPU detection.
It is pointless to run it otherwise and it causes issues
on OSes where we have not implemented a way to check.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@33713 b3059339-0415-0410-9bf9-f77b7e298cf2
it can already handle all cases, will always print a proper warning and
probably fixes SSE being disabled on x86_64 Solaris systems.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30971 b3059339-0415-0410-9bf9-f77b7e298cf2
(x86_64), to fix generated code on ICC 11.0.
Original FFmpeg patch by Reimar.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28037 b3059339-0415-0410-9bf9-f77b7e298cf2
Patch by Zhou, Zongyi %zz65 A cornell P edu%
Original thread:
date: Wed, Nov 19, 2008 at 4:22 PM
subject: Re: [MPlayer-dev-eng] [PATCH] yadif SSE2/SSSE3 optimization
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27960 b3059339-0415-0410-9bf9-f77b7e298cf2
We were using an inconsistent mix of the three variants and 'volatile' should
be the most correct and portable variant.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27791 b3059339-0415-0410-9bf9-f77b7e298cf2
Neither variant is valid C99 syntax, but __asm__ is the most portable variant.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27788 b3059339-0415-0410-9bf9-f77b7e298cf2
This avoids a pointless indirection that only obscures what is really done.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27761 b3059339-0415-0410-9bf9-f77b7e298cf2
enabled, checking HAVE_XXX and disabling that CPU feature is meaningless.
patch by KO Myung-Hun, komh chollian net
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26094 b3059339-0415-0410-9bf9-f77b7e298cf2
cpudetect.c:344: warning: implicit declaration of function sysctlbyname
patch by Elias Pipping, elias pipping org
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26085 b3059339-0415-0410-9bf9-f77b7e298cf2
