mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
|
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_X86_TIMER_H
|
|
#define AVUTIL_X86_TIMER_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#if HAVE_INLINE_ASM
|
|
|
|
#define FF_TIMER_UNITS "decicycles"
|
|
#define AV_READ_TIME read_time
|
|
|
|
static inline uint64_t read_time(void)
|
|
{
|
|
uint32_t a, d;
|
|
__asm__ volatile("rdtsc" : "=a" (a), "=d" (d));
|
|
return ((uint64_t)d << 32) + a;
|
|
}
|
|
|
|
#elif HAVE_RDTSC
|
|
|
|
#include <intrin.h>
|
|
#define AV_READ_TIME __rdtsc
|
|
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
#endif /* AVUTIL_X86_TIMER_H */
|