mirror of
https://github.com/mpv-player/mpv
synced 2024-12-12 18:06:18 +00:00
2bc2399797
Make "-lavdopts threads=0" mean an autodetected number of threads, and make that the default value of the option. Also increase the upper limit of the option from 8 to 16. Add new file osdep/numcores.c which tries to determine the number of cores available on the machine. numcores.c is based (heavily modified) on public domain numcpus.c by Philip Willoughby <pgw99@doc.ic.ac.uk>, downloaded from http://csgsoft.doc.ic.ac.uk/numcpus/
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/*
|
|
* This file is part of MPlayer.
|
|
*
|
|
* MPlayer is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* MPlayer is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include "numcores.h"
|
|
|
|
#ifdef _SC_NPROCESSORS_ONLN
|
|
#define SCNAME _SC_NPROCESSORS_ONLN
|
|
#elif defined _SC_NPROC_ONLN
|
|
#define SCNAME _SC_NPROC_ONLN
|
|
#elif defined _SC_CRAY_NCPU
|
|
#define SCNAME _SC_CRAY_NCPU
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include <windows.h>
|
|
int default_thread_count(void)
|
|
{
|
|
SYSTEM_INFO info;
|
|
GetSystemInfo(&info);
|
|
int count = info.dwNumberOfProcessors;
|
|
if (count > 0)
|
|
return count;
|
|
return -1;
|
|
}
|
|
|
|
#elif defined SCNAME
|
|
|
|
int default_thread_count(void)
|
|
{
|
|
long nprocs = sysconf(SCNAME);
|
|
if (nprocs < 1)
|
|
return -1;
|
|
return nprocs;
|
|
}
|
|
|
|
#else
|
|
|
|
int default_thread_count(void)
|
|
{
|
|
return -2;
|
|
}
|
|
|
|
#endif
|