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
|
/* Ogle - A video player
* Copyright (C) 2000, 2001 Bjrn Englund, Hkan Hjort
*
* 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 <stdio.h>
#include "sync.h"
#include "common.h"
#include "timemath.h"
void calc_realtime_from_scrtime(clocktime_t *rt, clocktime_t *scrtime,
sync_point_t *sp)
{
double inv_speed = 1.0/sp->speed;
timesub(rt, scrtime, &sp->scr);
timemul(rt, rt, inv_speed);
timeadd(rt, rt, &sp->rt);
}
void calc_realtime_left_to_scrtime(clocktime_t *time_left,
clocktime_t *rt,
clocktime_t *scrtime,
sync_point_t *sp)
{
calc_realtime_from_scrtime(time_left, scrtime, sp);
timesub(time_left, time_left, rt);
}
void set_sync_point(ctrl_time_t *ctrl_time, clocktime_t *rt,
clocktime_t *scrtime, double speed)
{
ctrl_time->sync_point.rt = *rt;
ctrl_time->sync_point.scr = *scrtime;
ctrl_time->sync_point.speed = speed;
ctrl_time->offset_valid = OFFSET_VALID;
}
void set_speed(sync_point_t *sp, double speed)
{
clocktime_t cur_scrtime;
clocktime_t cur_rt;
clocktime_get(&cur_rt);
timesub(&cur_scrtime, &cur_rt, &sp->rt);
timemul(&cur_scrtime, &cur_scrtime, sp->speed);
timeadd(&cur_scrtime, &cur_scrtime, &sp->scr);
sp->speed = speed;
sp->rt = cur_rt;
sp->scr = cur_scrtime;
}
|
