2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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
23 * high precision timer, useful to profile code
26 #ifndef AVUTIL_TIMER_H
27 #define AVUTIL_TIMER_H
34 # include "arm/timer.h"
36 # include "bfin/timer.h"
38 # include "ppc/timer.h"
40 # include "x86/timer.h"
43 #if !defined(AV_READ_TIME) && HAVE_GETHRTIME
44 # define AV_READ_TIME gethrtime
50 uint64_t tstart= AV_READ_TIME();\
52 #define STOP_TIMER(id) \
53 tend= AV_READ_TIME();\
55 static uint64_t tsum=0;\
57 static int tskip_count=0;\
58 if(tcount<2 || tend - tstart < 8*tsum/tcount || tend - tstart < 2000){\
59 tsum+= tend - tstart;\
63 if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
64 av_log(NULL, AV_LOG_ERROR, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n",\
65 tsum*10/tcount, id, tcount, tskip_count);\
70 #define STOP_TIMER(id) {}
73 #endif /* AVUTIL_TIMER_H */