On Fri, 7 Jun 2019 at 23:20, Lauri Kasanen <c...@gmx.com> wrote: > On Fri, 7 Jun 2019 08:38:35 -0700 > Adrian Tong <adriantong1...@gmail.com> wrote: > > > Hi > > > > I have a workload which spends a significant amount of time (~10%) in > > the yuv420_bgr24_mmxext function in FFMEPG. > > > > I looked at the assembly and profile and see MMX (64 bit) registers are > > used. I wonder whether we can have a SSE2 version which has a register > bit > > width of 128. > > > > I am very interested in implementing such support if it is possible. > > I'm not well versed in x86 vectors, so I can't say if SSE2 is enough or > some other SSE version would be needed, but certainly YUV to RGB > conversion can be done faster than with MMX. Please do send a patch. > > - Lauri >
Hi Lauri. Thanks for the reply, any reason why this has not been implemented before ? it seems to me that this would be a pretty important/hot function. -Adrian > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
