diff options
Diffstat (limited to 'firmware/target/hosted/sdl/timer-sdl.c')
-rw-r--r-- | firmware/target/hosted/sdl/timer-sdl.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/firmware/target/hosted/sdl/timer-sdl.c b/firmware/target/hosted/sdl/timer-sdl.c new file mode 100644 index 0000000000..369aeab929 --- /dev/null +++ b/firmware/target/hosted/sdl/timer-sdl.c | |||
@@ -0,0 +1,61 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id: timer.h 13806 2007-07-06 21:36:32Z jethead71 $ | ||
9 | * | ||
10 | * Copyright (C) 2005 Kévin Ferrare | ||
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 "timer.h" | ||
23 | #include <SDL_timer.h> | ||
24 | |||
25 | static int timer_prio = -1; | ||
26 | void (*global_timer_callback)(void); | ||
27 | SDL_TimerID timerId; | ||
28 | |||
29 | Uint32 SDL_timer_callback(Uint32 interval, void *param){ | ||
30 | (void)param; | ||
31 | global_timer_callback(); | ||
32 | return(interval); | ||
33 | } | ||
34 | |||
35 | #define cycles_to_miliseconds(cycles) \ | ||
36 | ((int)((1000*cycles)/TIMER_FREQ)) | ||
37 | |||
38 | bool timer_register(int reg_prio, void (*unregister_callback)(void), | ||
39 | long cycles, void (*timer_callback)(void)) | ||
40 | { | ||
41 | (void)unregister_callback; | ||
42 | if (reg_prio <= timer_prio || cycles == 0) | ||
43 | return false; | ||
44 | timer_prio=reg_prio; | ||
45 | global_timer_callback=timer_callback; | ||
46 | timerId=SDL_AddTimer(cycles_to_miliseconds(cycles), SDL_timer_callback, 0); | ||
47 | return true; | ||
48 | } | ||
49 | |||
50 | bool timer_set_period(long cycles) | ||
51 | { | ||
52 | SDL_RemoveTimer (timerId); | ||
53 | timerId=SDL_AddTimer(cycles_to_miliseconds(cycles), SDL_timer_callback, 0); | ||
54 | return true; | ||
55 | } | ||
56 | |||
57 | void timer_unregister(void) | ||
58 | { | ||
59 | SDL_RemoveTimer (timerId); | ||
60 | timer_prio = -1; | ||
61 | } | ||