A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2* __________ __ ___.
3* Open \______ \ ____ ____ | | _\_ |__ _______ ___
4* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7* \/ \/ \/ \/ \/
8* $Id$
9*
10* Copyright (C) 2005 Jens Arnold
11*
12* This program is free software; you can redistribute it and/or
13* modify it under the terms of the GNU General Public License
14* as published by the Free Software Foundation; either version 2
15* of the License, or (at your option) any later version.
16*
17* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18* KIND, either express or implied.
19*
20****************************************************************************/
21
22#include <stdbool.h>
23#include "config.h"
24#include "cpu.h"
25#include "system.h"
26#include "timer.h"
27#include "logf.h"
28
29static int timer_prio = -1;
30void SHAREDBSS_ATTR (*pfn_timer)(void) = NULL; /* timer callback */
31void SHAREDBSS_ATTR (*pfn_unregister)(void) = NULL; /* unregister callback */
32
33/* Register a user timer, called every <cycles> TIMER_FREQ cycles */
34bool timer_register(int reg_prio, void (*unregister_callback)(void),
35 long cycles, void (*timer_callback)(void)
36 IF_COP(, int core))
37{
38 if (reg_prio <= timer_prio || cycles == 0)
39 return false;
40
41 if (!timer_set(cycles, true))
42 return false;
43
44 pfn_timer = timer_callback;
45 /* NOTE: if unreg cb is defined you are in charge of calling timer_unregister() */
46 pfn_unregister = unregister_callback;
47 timer_prio = reg_prio;
48
49 return timer_start(IF_COP(core));
50}
51
52bool timer_set_period(long cycles)
53{
54 return timer_set(cycles, false);
55}
56
57/* NOTE: unregister callbacks are not called by timer_unregister()
58* the unregister_callback only gets called when your timer gets
59* overwritten by a lower priority timer using timer_register() */
60void timer_unregister(void)
61{
62 timer_stop();
63
64 pfn_timer = NULL;
65 pfn_unregister = NULL;
66 timer_prio = -1;
67}
68