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/*
* Copyright (C) 2012-2013 Team XBMC
* http://xbmc.org
*
* 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, 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 XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <algorithm>
#include "Timer.h"
#include "SystemClock.h"
CTimer::CTimer(ITimerCallback *callback)
: CThread("Timer"),
m_callback(callback),
m_timeout(0),
m_interval(false),
m_endTime(0)
{ }
CTimer::~CTimer()
{
Stop(true);
}
bool CTimer::Start(uint32_t timeout, bool interval /* = false */)
{
if (m_callback == NULL || timeout == 0 || IsRunning())
return false;
m_timeout = timeout;
m_interval = interval;
Create();
return true;
}
bool CTimer::Stop(bool wait /* = false */)
{
if (!IsRunning())
return false;
m_bStop = true;
m_eventTimeout.Set();
StopThread(wait);
return true;
}
bool CTimer::Restart()
{
if (!IsRunning())
return false;
Stop(true);
return Start(m_timeout, m_interval);
}
float CTimer::GetElapsedSeconds() const
{
return GetElapsedMilliseconds() / 1000.0f;
}
float CTimer::GetElapsedMilliseconds() const
{
if (!IsRunning())
return 0.0f;
return (float)(XbmcThreads::SystemClockMillis() - (m_endTime - m_timeout));
}
void CTimer::Process()
{
uint32_t currentTime = XbmcThreads::SystemClockMillis();
m_endTime = currentTime + m_timeout;
while (!m_bStop)
{
// wait the necessary time
if (!m_eventTimeout.WaitMSec(m_endTime - currentTime))
{
currentTime = XbmcThreads::SystemClockMillis();
if (m_endTime <= currentTime)
{
// execute OnTimeout() callback
m_callback->OnTimeout();
// stop if this is not an interval timer
if (!m_interval)
break;
m_endTime = currentTime + m_timeout;
}
}
}
}
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