On Sat, Sep 26, 2015 at 02:42:27PM +0200, Christophe Gisquet wrote: > Hi, > > 2015-09-26 1:52 GMT+02:00 Michael Niedermayer <michae...@gmx.at>: > > This segfaults with > > http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2125/DNxHDtest2.mov > > Patch reworked: > - Preallocate RowContext to avoid reloading it > - Use of init_thread_copy due to that > - Fix crashes due to mishandling of code around execute2 > > The speed of slice-threading is equivalent to frame-threading, which > makes the later less attractive. Several decoders forgo implementing > it. > > -- > Christophe
> dnxhddec.c | 219 > ++++++++++++++++++++++++++++++++++++------------------------- > 1 file changed, 131 insertions(+), 88 deletions(-) > ac3cc1371c16164255c05afcbcb7cd72b86fd475 > 0003-dnxhddec-implement-slice-multithreading.patch > From 354a8e016e1e10a4288534782104479aae3e62a9 Mon Sep 17 00:00:00 2001 > From: Christophe Gisquet <christophe.gisq...@gmail.com> > Date: Fri, 25 Sep 2015 08:56:43 +0200 > Subject: [PATCH 3/5] dnxhddec: implement slice multithreading > > Around 3x speedup with 4 threads. Maybe more mb lines should be > batched per thread, but that's good enough for a first try. applied thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The greatest way to live with honor in this world is to be what we pretend to be. -- Socrates
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