Re: [Bug 383240] Re: Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel
Mans Rullgard m...@mansr.com writes: dsputil.h is not part of the public API, so changes there should not affect anything outside libavcodec. Unfortunately mplayer does #inlcude dsputil.h, and we carefully need to make sure that changes to that file do not destabilize mplayer. I've also checked gstreamer0.10-ffmpeg, but that package does not seem to use dsputil.h. If in doubt, we should probably reupload mplayer with the changed dsputil.h together with the new mplayer. -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel https://bugs.launchpad.net/bugs/383240 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 383240] Re: Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel
Dave Martin dave.mar...@arm.com writes: Having played a bit, --extra-cflags=-mfpu=neon -mfloat-abi=softfp seems to be _required_ for the neon flavour in order for the NEON optimisations to get built. Is Mans aware of that? If yes, then the upstream configure file should be patched to automatically add these settings to CFLAGS. -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel https://bugs.launchpad.net/bugs/383240 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 383240] Re: Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel
excellent, thanks for clarification Loïc! -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel https://bugs.launchpad.net/bugs/383240 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 383240] Re: Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel
Loïc Minier l...@dooz.org writes: I think there are various different things here: - ffmpeg has a mechanism to do multiple passes (multiple builds) and produce multiple shared libs which can be loaded by glibc's hwcaps-based selection mechanism automatically - ffmpeg has grown some runtime detection of the feature (instead of build time selection / autodetection on the buildd) - NEON was broken in hardware on imx51 TO1 which is all hardware which was around for jaunty perhaps the kernel shouldn't advertise NEON hwcaps in this case then? What we want: i) karmic should use the latest ffmpeg ii) the latest ffmpeg should use NEON automatically at runtime iii) we want to backport key stuff to some PPA to show the NEON stuff based on jaunty (as it's impractical to play with karmic as it's still quite unstable) iv) keep the Debian and Ubuntu packaging as identical as possible I guess i) will happen as ffmpeg updates over the karmic cycle. Debian and ubuntu track the FFmpeg 0.5 release. From what I get of this thread of discussion, I believe the arm related changes have been implemented in the trunk branch of ffmpeg after 0.5 was branched of. I'd be against switching back to trunk because of instabilities it would cause in gstreamer0.10-ffmpeg, mplayer and vlc. You could literally feel the rate of bugreports dropping down after these package finally agreed on a common ffmpeg version to use. I'd rather suggest to backport the changes to the 0.5 release branch instead of tracking again ffmpeg trunk. -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel https://bugs.launchpad.net/bugs/383240 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 383240] Re: Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel
Dave Martin dave.mar...@arm.com writes: It should be safe to uncomment the FLAVORS += neon line now, because we deliberately disable NEON in the kernel for Jaunty to avoid applications and libraries accidentally believing it works. (This also means neon is not present in the reported hwcaps). So you're suggesting we should deliberatly and knowingly waste buildd time for a flavor nobody is technically able to use? Well, we could of course do that, but I'd rather prefer we wouldn't. -- Gruesse/greetings, Reinhard Tartler, KeyID 945348A4 -- Integrate and enable ARMv5TE/v6/VFP and NEON optimisations from ffmpeg trunk for armel https://bugs.launchpad.net/bugs/383240 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
