arm: get_cabac inline asm
[libav.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 #include "log.h"
36
37 #if ARCH_ARM
38 # include "arm/timer.h"
39 #elif ARCH_BFIN
40 # include "bfin/timer.h"
41 #elif ARCH_PPC
42 # include "ppc/timer.h"
43 #elif ARCH_X86
44 # include "x86/timer.h"
45 #endif
46
47 #if !defined(AV_READ_TIME) && HAVE_GETHRTIME
48 # define AV_READ_TIME gethrtime
49 #endif
50
51 #ifdef AV_READ_TIME
52 #define START_TIMER \
53 uint64_t tend; \
54 uint64_t tstart = AV_READ_TIME(); \
55
56 #define STOP_TIMER(id) \
57 tend = AV_READ_TIME(); \
58 { \
59 static uint64_t tsum = 0; \
60 static int tcount = 0; \
61 static int tskip_count = 0; \
62 if (tcount < 2 || \
63 tend - tstart < 8 * tsum / tcount || \
64 tend - tstart < 2000) { \
65 tsum+= tend - tstart; \
66 tcount++; \
67 } else \
68 tskip_count++; \
69 if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
70 av_log(NULL, AV_LOG_ERROR, \
71 "%"PRIu64" decicycles in %s, %d runs, %d skips\n", \
72 tsum * 10 / tcount, id, tcount, tskip_count); \
73 } \
74 }
75 #else
76 #define START_TIMER
77 #define STOP_TIMER(id) { }
78 #endif
79
80 #endif /* AVUTIL_TIMER_H */