From 9cb5c193c3f49000d7a354a3661fc542c3a47d5c Mon Sep 17 00:00:00 2001 From: uau Date: Fri, 30 Mar 2007 22:57:04 +0000 Subject: Set CONFIG_EBP_AVAILABLE, CONFIG_EBX_AVAILABLE for FFmpeg After FFmpeg r8549 these variables are used in libavcodec to determine whether x86 inline asm sections using these registers or requiring a certain total number of total free registers are enabled. Because they were not set by MPlayer configure some H264 decoding optimizations were disabled after that FFmpeg version. This change sets the variables to true unconditionally which should restore previous behavior. Adding proper detection is left for later. EBX should always be available because internal libavcodec is never compiled with PIC. However if -fomit-frame-pointer is not used because of --enable-debug then EBP is not available. Thus proper detection would be preferable to fix compilation with --enable-debug on x86. Currently the variables are also set on non-x86 which should be harmless even if somewhat ugly. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22848 b3059339-0415-0410-9bf9-f77b7e298cf2 --- configure | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'configure') diff --git a/configure b/configure index fc4084c53e..7be1c14e60 100755 --- a/configure +++ b/configure @@ -8005,6 +8005,10 @@ $_def_libavutil_so /* Use libavformat's muxers */ $_def_muxers +/* Use these registers in FFmpeg x86 inline asm. No proper detection yet. */ +#define CONFIG_EBX_AVAILABLE 1 +#define CONFIG_EBP_AVAILABLE 1 + #define CONFIG_GPL 1 /* Use amr codecs from libavcodec (requires amr sources) */ -- cgit v1.2.3