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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/timer.h"
#include "engines/engine.h"
#include "sci/sfx/sfx_timer.h"
namespace Sci {
#define FREQ 60
#define DELAY (1000000 / FREQ)
typedef void (*scummvm_timer_callback_t)(void *);
static scummvm_timer_callback_t scummvm_timer_callback = NULL;
static void *scummvm_timer_callback_data = NULL;
extern ::Engine *g_engine;
void scummvm_timer_update_internal(void *ptr) {
if (scummvm_timer_callback)
scummvm_timer_callback(scummvm_timer_callback_data);
}
int scummvm_timer_start(void (*func)(void *), void *data) {
if (scummvm_timer_callback) {
fprintf(stderr,
"Error: Attempt to initialize gametick timer more than once\n");
return SFX_ERROR;
}
if (!func) {
fprintf(stderr,
"Error: Attempt to initialize gametick timer w/o callback\n");
return SFX_ERROR;
}
scummvm_timer_callback = func;
scummvm_timer_callback_data = data;
::g_engine->getTimerManager()->installTimerProc(&scummvm_timer_update_internal, DELAY, NULL);
return SFX_OK;
}
int scummvm_timer_stop() {
scummvm_timer_callback = NULL;
return SFX_OK;
}
sfx_timer_t sfx_timer_scummvm = {
DELAY / 1000,
&scummvm_timer_start,
&scummvm_timer_stop
};
} // End of namespace Sci
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