2 * Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVUTIL_AARCH64_TIMER_H
22 #define AVUTIL_AARCH64_TIMER_H
27 #if defined(__APPLE__)
29 #include <mach/mach_time.h>
31 #define AV_READ_TIME mach_absolute_time
35 #define AV_READ_TIME read_time
37 static inline uint64_t read_time(void)
39 uint64_t cycle_counter;
42 "mrs %0, pmccntr_el0 "
43 : "=r"(cycle_counter) :: "memory" );
48 #endif /* HAVE_INLINE_ASM */
50 #endif /* AVUTIL_AARCH64_TIMER_H */