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comparison libavutil/timer.h @ 9:ea1ba68cf0ed

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update to match api changes + add sscc produced source
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Wed, 05 Jun 2013 14:43:26 +0200
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1 /**
2 * @file
3 * high precision timer, useful to profile code
4 *
5 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #ifndef AVUTIL_TIMER_H
25 #define AVUTIL_TIMER_H
26
27 #include <stdlib.h>
28 #include <stdint.h>
29 #include "config.h"
30
31 #if ARCH_ARM
32 # include "arm/timer.h"
33 #elif ARCH_PPC
34 # include "ppc/timer.h"
35 #elif ARCH_X86
36 # include "x86/timer.h"
37 #endif
38
39 #if !defined(AV_READ_TIME) && HAVE_GETHRTIME
40 # define AV_READ_TIME gethrtime
41 #endif
42
43 #ifdef AV_READ_TIME
44 #define START_TIMER \
45 uint64_t tend;\
46 uint64_t tstart= AV_READ_TIME();\
47
48 #define STOP_TIMER(id) \
49 tend= AV_READ_TIME();\
50 {\
51 static uint64_t tsum=0;\
52 static int tcount=0;\
53 static int tskip_count=0;\
54 if(tcount<2 || tend - tstart < 8*tsum/tcount || tend - tstart < 2000){\
55 tsum+= tend - tstart;\
56 tcount++;\
57 }else\
58 tskip_count++;\
59 if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
60 av_log(NULL, AV_LOG_ERROR, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n",\
61 tsum*10/tcount, id, tcount, tskip_count);\
62 }\
63 }
64 #else
65 #define START_TIMER
66 #define STOP_TIMER(id) {}
67 #endif
68
69 #endif /* AVUTIL_TIMER_H */