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/*
The oRTP library is an RTP (Realtime Transport Protocol - rfc1889) stack.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <rtpport.h>
#include "rtptimer.h"
#ifndef _WIN32
#ifdef __linux__
#include <sys/select.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
static struct timeval orig,cur;
static guint32 posix_timer_time=0; /*in milisecond */
void posix_timer_init()
{
posix_timer.state=RTP_TIMER_RUNNING;
gettimeofday(&orig,NULL);
posix_timer_time=0;
}
void posix_timer_do()
{
gint32 diff,time;
struct timeval tv;
gettimeofday(&cur,NULL);
time=((cur.tv_usec-orig.tv_usec)/1000 ) + ((cur.tv_sec-orig.tv_sec)*1000 );
if ( (diff=time-posix_timer_time)>50){
g_warning("Must catchup %i miliseconds.",diff);
}
while((diff = posix_timer_time-time) > 0)
{
tv.tv_sec = diff/1000;
tv.tv_usec = (diff%1000)*1000;
select(0,NULL,NULL,NULL,&tv);
gettimeofday(&cur,NULL);
time=((cur.tv_usec-orig.tv_usec)/1000 ) + ((cur.tv_sec-orig.tv_sec)*1000 );
}
posix_timer_time+=POSIXTIMER_INTERVAL/1000;
}
void posix_timer_uninit()
{
posix_timer.state=RTP_TIMER_STOPPED;
}
RtpTimer posix_timer={ 0,
posix_timer_init,
posix_timer_do,
posix_timer_uninit,
{0,POSIXTIMER_INTERVAL}};
#else //WIN32
#include <windows.h>
#include <mmsystem.h>
MMRESULT timerId;
HANDLE TimeEvent;
int late_ticks;
static DWORD posix_timer_time;
static DWORD offset_time;
#define TIME_INTERVAL 50
#define TIME_RESOLUTION 10
#define TIME_TIMEOUT 100
void CALLBACK timerCb(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
{
// Check timerId
if (timerId == uID)
{
SetEvent(TimeEvent);
posix_timer_time += TIME_INTERVAL;
}
}
void win_timer_init(void)
{
timerId = timeSetEvent(TIME_INTERVAL,10,timerCb,0,TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
TimeEvent = CreateEvent(NULL,FALSE,FALSE,NULL);
late_ticks = 0;
offset_time = GetTickCount();
posix_timer_time=0;
}
void win_timer_do(void)
{
DWORD diff;
// If timer have expired while we where out of this method
// Try to run after lost time.
if (late_ticks > 0)
{
late_ticks--;
posix_timer_time+=TIME_INTERVAL;
return;
}
diff = GetTickCount() - posix_timer_time - offset_time;
if( diff>TIME_INTERVAL && (diff<(1<<31)))
{
late_ticks = diff/TIME_INTERVAL;
g_warning("we must catchup %i ticks.",late_ticks);
return;
}
WaitForSingleObject(TimeEvent,TIME_TIMEOUT);
return;
}
void win_timer_close(void)
{
timeKillEvent(timerId);
}
RtpTimer toto;
RtpTimer posix_timer={ 0,
win_timer_init,
win_timer_do,
win_timer_close,
{0,TIME_INTERVAL * 1000}};
#endif // _WIN32
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