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 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id: timer.h 13806 2007-07-06 21:36:32Z jethead71 $
+*
+* Copyright (C) 2005 Kévin Ferrare
+*
+* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#include "timer.h"
+#include <SDL_timer.h>
+
+static int timer_prio = -1;
+void (*global_timer_callback)(void);
+SDL_TimerID timerId;
+
+Uint32 SDL_timer_callback(Uint32 interval, void *param){
+    (void)param;
+    global_timer_callback();
+    return(interval);
+}
+
+#define cycles_to_miliseconds(cycles) \
+    ((int)((1000*cycles)/TIMER_FREQ))
+
+bool timer_register(int reg_prio, void (*unregister_callback)(void),
+                    long cycles, void (*timer_callback)(void))
+{
+    (void)unregister_callback;
+    if (reg_prio <= timer_prio || cycles == 0)
+        return false;
+    timer_prio=reg_prio;
+    global_timer_callback=timer_callback;
+    timerId=SDL_AddTimer(cycles_to_miliseconds(cycles), SDL_timer_callback, 0);
+    return true;
+}
+
+bool timer_set_period(long cycles)
+{
+    SDL_RemoveTimer (timerId);
+    timerId=SDL_AddTimer(cycles_to_miliseconds(cycles), SDL_timer_callback, 0);
+    return true;
+}
+
+void timer_unregister(void)
+{
+    SDL_RemoveTimer (timerId);
+    timer_prio = -1;
+}