[FFmpeg-devel] AVX assembly for ffmpeg

Ronald S. Bultje rsbultje
Tue Feb 15 22:41:13 CET 2011


On Tue, Feb 15, 2011 at 3:27 PM, Reimar D?ffinger
<Reimar.Doeffinger at gmx.de> wrote:
> On Tue, Feb 15, 2011 at 08:12:13PM +0000, M?ns Rullg?rd wrote:
>> Daniel Kang <daniel.d.kang at gmail.com> writes:
>> > I have been asked to write AVX assembly for ffmpeg. This will require
>> > porting x264's x86inc.asm file with the AVX abstraction layer. Ideally, I
>> > would like to bump the yasm version, as it is already checked for pextrd
>> > (SSE4). However, is this is not permissible, I can see if the AVX compile
>> > flag can be set conditionally, based on the yasm version.
>> How recent a yasm version is required, and how hard is it to make it
>> conditional?
> Note that I promised to not burden other people with it, but I'd appreciate
> it if you could also look into/try not to break nasm :-)

HAVE_AVX isn't that difficult to implement now that we have
config.asm. Let's go the conditional route, at least for now.


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