blob: b2beadfa2f033457fc1ff795a67686517ee1d6a3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#include <gras/time_tag.hpp>
#include <PMC/Containers.hpp>
#include <boost/cstdint.hpp> //uint64
#include <boost/math/special_functions/round.hpp>
using namespace gras;
static TimeTag &normalize(TimeTag &t)
{
int num = int(t._ticks/time_tps());
if (num < 0) num--; //stops negative ticks
t._fsecs += num;
t._ticks -= num*time_tps();
return t;
}
TimeTag::TimeTag(void):
_fsecs(0), _ticks(0)
{/*NOP*/}
TimeTag TimeTag::from_ticks(const time_ticks_t ticks)
{
TimeTag t;
t._ticks = ticks;
return normalize(t);
}
TimeTag TimeTag::from_ticks(const time_ticks_t ticks, const double rate)
{
TimeTag t;
t._fsecs = time_ticks_t(ticks/rate);
const double error = ticks - (t._fsecs*rate);
t._ticks = boost::math::llround((error*time_tps())/rate);
return normalize(t);
}
TimeTag TimeTag::from_pmc(const PMCC &p)
{
TimeTag t;
const PMCTuple<2> &tuple = p.as<PMCTuple<2> >();
t._fsecs = tuple[0].as<boost::uint64_t>();
t._ticks = boost::math::llround(tuple[1].as<double>()*time_tps());
return normalize(t);
}
time_ticks_t TimeTag::to_ticks(void) const
{
return _fsecs*time_tps() + _ticks;
}
time_ticks_t TimeTag::to_ticks(const double rate) const
{
const time_ticks_t full = time_ticks_t(_fsecs*rate);
const double error = _fsecs - (full/rate);
return full + boost::math::llround(_ticks*rate/time_tps() + error*rate);
}
PMCC TimeTag::to_pmc(void) const
{
PMCTuple<2> tuple;
tuple[0] = PMC_M<boost::uint64_t>(_fsecs);
tuple[1] = PMC_M<double>(_ticks/double(time_tps()));
return PMC_M(tuple);
}
TimeTag &TimeTag::operator+=(const TimeTag &rhs)
{
_fsecs += rhs._fsecs;
_ticks += rhs._ticks;
return normalize(*this);
}
TimeTag &TimeTag::operator-=(const TimeTag &rhs)
{
_fsecs -= rhs._fsecs;
_ticks -= rhs._ticks;
return normalize(*this);
}
bool gras::operator<(const TimeTag &lhs, const TimeTag &rhs)
{
if (lhs._fsecs == rhs._fsecs) return lhs._ticks < rhs._ticks;
return lhs._fsecs < rhs._fsecs;
}
bool gras::operator==(const TimeTag &lhs, const TimeTag &rhs)
{
return (lhs._fsecs == rhs._fsecs) and (lhs._ticks == rhs._ticks);
}
|
