blob: 04a6f23c4cbce8fbed7209156f0779186f86c30c (
plain) (
blame)
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
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "timer.h"
#include "utils.h"
#include "os_compat.h"
static uint64_t now(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return ((uint64_t)tv.tv_sec * 1000000) + tv.tv_usec;
}
Timer *timer_new(AudioFormat *af)
{
Timer *timer;
timer = xmalloc(sizeof(Timer));
timer->time = 0;
timer->started = 0;
timer->rate = af->sampleRate * (af->bits / CHAR_BIT) * af->channels;
return timer;
}
void timer_free(Timer *timer)
{
free(timer);
}
void timer_start(Timer *timer)
{
timer->time = now();
timer->started = 1;
}
void timer_reset(Timer *timer)
{
timer->time = 0;
timer->started = 0;
}
void timer_add(Timer *timer, int size)
{
assert(timer->started);
timer->time += ((uint64_t)size * 1000000) / timer->rate;
}
void timer_sync(Timer *timer)
{
int64_t sleep;
assert(timer->started);
sleep = timer->time - now();
if (sleep > 0)
my_usleep(sleep);
}
|
