timer.h (1314B)
1 /* 2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 3 * 4 * This file is part of FFmpeg. 5 * 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. 10 * 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. 15 * 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 19 */ 20 21 #ifndef AVUTIL_ARM_TIMER_H 22 #define AVUTIL_ARM_TIMER_H 23 24 #include <stdint.h> 25 #include "config.h" 26 27 #if defined(__APPLE__) 28 29 #include <mach/mach_time.h> 30 31 #define AV_READ_TIME mach_absolute_time 32 33 #elif HAVE_INLINE_ASM && defined(__ARM_ARCH_7A__) 34 35 #define AV_READ_TIME read_time 36 37 static inline uint64_t read_time(void) 38 { 39 unsigned cc; 40 __asm__ volatile ("mrc p15, 0, %0, c9, c13, 0" : "=r"(cc)); 41 return cc; 42 } 43 44 #endif /* HAVE_INLINE_ASM && __ARM_ARCH_7A__ */ 45 46 #endif /* AVUTIL_ARM_TIMER_H */