Move AVFrame from lavc to lavu.
[ffmpeg.git] / libavutil / timer.h
1 /*
2  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * high precision timer, useful to profile code
24  */
25
26 #ifndef AVUTIL_TIMER_H
27 #define AVUTIL_TIMER_H
28
29 #include <stdlib.h>
30 #include <stdint.h>
31 #include <inttypes.h>
32
33 #include "config.h"
34
35 #if   ARCH_ARM
36 #   include "arm/timer.h"
37 #elif ARCH_BFIN
38 #   include "bfin/timer.h"
39 #elif ARCH_PPC
40 #   include "ppc/timer.h"
41 #elif ARCH_X86
42 #   include "x86/timer.h"
43 #endif
44
45 #if !defined(AV_READ_TIME) && HAVE_GETHRTIME
46 #   define AV_READ_TIME gethrtime
47 #endif
48
49 #ifdef AV_READ_TIME
50 #define START_TIMER                             \
51     uint64_t tend;                              \
52     uint64_t tstart = AV_READ_TIME();           \
53
54 #define STOP_TIMER(id)                                                    \
55     tend = AV_READ_TIME();                                                \
56     {                                                                     \
57         static uint64_t tsum   = 0;                                       \
58         static int tcount      = 0;                                       \
59         static int tskip_count = 0;                                       \
60         if (tcount < 2                        ||                          \
61             tend - tstart < 8 * tsum / tcount ||                          \
62             tend - tstart < 2000) {                                       \
63             tsum+= tend - tstart;                                         \
64             tcount++;                                                     \
65         } else                                                            \
66             tskip_count++;                                                \
67         if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
68             av_log(NULL, AV_LOG_ERROR,                                    \
69                    "%"PRIu64" decicycles in %s, %d runs, %d skips\n",     \
70                    tsum * 10 / tcount, id, tcount, tskip_count);          \
71         }                                                                 \
72     }
73 #else
74 #define START_TIMER
75 #define STOP_TIMER(id) { }
76 #endif
77
78 #endif /* AVUTIL_TIMER_H */