On Mon, 15 May 2017 12:40:23 +0200 Carl Eugen Hoyos <ceho...@ag.or.at> wrote:
> From 42766f345dbf398716c6fd9072f072f5fa91c940 Mon Sep 17 00:00:00 2001 > From: Steve Kondik <st...@cyngn.com> > Date: Tue, 16 Dec 2014 01:37:57 -0800 > Subject: [PATCH 2/2] avutil: Use _SC_NPROCESSORS_CONF > > * On most Android devices, CPUs can appear and disappear due to hotplug > or CPU cluster management. Use the total number of CPUs instead so > that multithreaded decoding is properly optimized. This explanation isn't really sufficient. Also not why you would want this, or why you would want this only on Android. > Change-Id: I1cbf000a1bda7b3abf0a84e971e752f176857385 what is this? > --- > libavutil/cpu.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/libavutil/cpu.c b/libavutil/cpu.c > index 16e0c92..ab0965b 100644 > --- a/libavutil/cpu.c > +++ b/libavutil/cpu.c > @@ -282,6 +282,8 @@ int av_cpu_count(void) > > if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1) > nb_cpus = 0; > +#elif defined(__ANDROID__) && HAVE_SYSCONF && defined(_SC_NPROCESSORS_CONF) > + nb_cpus = sysconf(_SC_NPROCESSORS_CONF); > #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN) > nb_cpus = sysconf(_SC_NPROC_ONLN); > #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN) _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
