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https://github.com/libretro/scummvm.git
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86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <time.h>
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#include <psptypes.h>
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#include <psprtc.h>
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#include "common/scummsys.h"
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#include "backends/platform/psp/rtc.h"
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//#define __PSP_DEBUG_FUNCS__ /* For debugging function calls */
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//#define __PSP_DEBUG_PRINT__ /* For debug printouts */
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#include "backends/platform/psp/trace.h"
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// Class PspRtc ---------------------------------------------------------------
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namespace Common {
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DECLARE_SINGLETON(PspRtc);
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}
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void PspRtc::init() { // init our starting ticks
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uint32 ticks[2];
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sceRtcGetCurrentTick((u64 *)ticks);
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_startMillis = ticks[0]/1000;
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_startMicros = ticks[0];
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//_lastMillis = ticks[0]/1000; //debug - only when we don't subtract startMillis
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}
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#define MS_LOOP_AROUND 4294967 /* We loop every 2^32 / 1000 = 71 minutes */
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#define MS_LOOP_CHECK 60000 /* Threading can cause weird mixups without this */
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// Note that after we fill up 32 bits ie 50 days we'll loop back to 0, which may cause
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// unpredictable results
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uint32 PspRtc::getMillis() {
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uint32 ticks[2];
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sceRtcGetCurrentTick((u64 *)ticks); // can introduce weird thread delays
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uint32 millis = ticks[0]/1000;
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millis -= _startMillis; // get ms since start of program
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if ((int)_lastMillis - (int)millis > MS_LOOP_CHECK) { // we must have looped around
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if (_looped == false) { // check to make sure threads do this once
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_looped = true;
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_milliOffset += MS_LOOP_AROUND; // add the needed offset
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PSP_DEBUG_PRINT("looping around. last ms[%d], curr ms[%d]\n", _lastMillis, millis);
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}
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} else {
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_looped = false;
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}
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_lastMillis = millis;
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return millis + _milliOffset;
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}
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uint32 PspRtc::getMicros() {
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uint32 ticks[2];
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sceRtcGetCurrentTick((u64 *)ticks);
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ticks[0] -= _startMicros;
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return ticks[0];
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}
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