On Mon, Jun 13, 2016 at 07:46:22AM +0700, Muhammad Faiz wrote: > On Mon, Jun 13, 2016 at 2:19 AM, Michael Niedermayer > <mich...@niedermayer.cc> wrote: > > On Sun, Jun 12, 2016 at 07:56:31AM +0700, Muhammad Faiz wrote: > >> give high quality resampling > >> as good as with linear_interp=on > >> as fast as without linear_interp=on > >> tested visually with ffplay > >> ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000, > >> showcqt=gamma=5" > >> ffplay -f lavfi "aevalsrc='sin(10000*t*t)', > >> aresample=osr=48000:linear_interp=on, showcqt=gamma=5" > >> ffplay -f lavfi "aevalsrc='sin(10000*t*t)', > >> aresample=osr=48000:exact_rational=on, showcqt=gamma=5" > >> > >> slightly speed improvement > >> for fair comparison with -cpuflags 0 > >> audio.wav is ~ 1 hour 44100 stereo 16bit wav file > >> ffmpeg -i audio.wav -af aresample=osr=48000 -f null - > >> old new > >> real 13.498s 13.121s > >> user 13.364s 12.987s > >> sys 0.131s 0.129s > >> > >> linear_interp=on > >> old new > >> real 23.035s 23.050s > >> user 22.907s 22.917s > >> sys 0.119s 0.125s > >> > >> exact_rational=on > >> real 12.418s > >> user 12.298s > >> sys 0.114s > >> > >> possibility to decrease memory usage if soft compensation is ignored > > > > interresting > > > > can you add some fate tests ? > > (that way this also could be easily tested for platform specific bugs) > > > patch attached > > thanks
> libswresample.mak | 256 > ++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 256 insertions(+) > 4eb9fee1d5502d816f8ea988d893b19bde8ac7c5 > 0001-fate-add-libswresample-exact_rational-test.patch > From bddd8cff10cff568dcec8cb953168b6aedc2d5a2 Mon Sep 17 00:00:00 2001 > From: Muhammad Faiz <mfc...@gmail.com> > Date: Mon, 13 Jun 2016 07:35:40 +0700 > Subject: [PATCH] fate: add libswresample exact_rational test tested on linux32/64 mingw32/64 mips and arm works fine [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB I have never wished to cater to the crowd; for what I know they do not approve, and what they approve I do not know. -- Epicurus
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
