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/*
The mediastreamer library aims at providing modular media processing and I/O
for linphone, but also for any telephony application.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mstimer.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <signal.h>
static MSTimerClass *ms_timer_class=NULL;
void ms_timer_init(MSTimer *sync)
{
ms_sync_init(MS_SYNC(sync));
MS_SYNC(sync)->attached_filters=sync->filters;
memset(sync->filters,0,MSTIMER_MAX_FILTERS*sizeof(MSFilter*));
MS_SYNC(sync)->samples_per_tick=160;
ms_timer_set_interval(sync,20);
sync->state=MS_TIMER_STOPPED;
}
void ms_timer_class_init(MSTimerClass *klass)
{
ms_sync_class_init(MS_SYNC_CLASS(klass));
MS_SYNC_CLASS(klass)->max_filters=MSTIMER_MAX_FILTERS;
MS_SYNC_CLASS(klass)->synchronize=(MSSyncSyncFunc)ms_timer_synchronize;
MS_SYNC_CLASS(klass)->destroy=(MSSyncDestroyFunc)ms_timer_destroy;
/* no need to overload these function*/
MS_SYNC_CLASS(klass)->attach=ms_sync_attach_generic;
MS_SYNC_CLASS(klass)->detach=ms_sync_detach_generic;
}
void ms_timer_destroy(MSTimer *timer)
{
g_free(timer);
}
void ms_timer_synchronize(MSTimer *timer)
{
/* //printf("ticks=%i \n",MS_SYNC(timer)->ticks); */
if (timer->state==MS_TIMER_STOPPED){
timer->state=MS_TIMER_RUNNING;
gettimeofday(&timer->orig,NULL);
timer->sync.time=0;
}
else {
gint32 diff,time;
struct timeval tv,cur;
gettimeofday(&cur,NULL);
time=((cur.tv_usec-timer->orig.tv_usec)/1000 ) + ((cur.tv_sec-timer->orig.tv_sec)*1000 );
if ( (diff=time-timer->sync.time)>50){
g_warning("Must catchup %i miliseconds.",diff);
}
while((diff = timer->sync.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-timer->orig.tv_usec)/1000 ) + ((cur.tv_sec-timer->orig.tv_sec)*1000 );
}
}
timer->sync.time+=timer->milisec;
return;
}
MSSync *ms_timer_new()
{
MSTimer *timer;
timer=g_malloc(sizeof(MSTimer));
ms_timer_init(timer);
if (ms_timer_class==NULL)
{
ms_timer_class=g_new(MSTimerClass,1);
ms_timer_class_init(ms_timer_class);
}
MS_SYNC(timer)->klass=MS_SYNC_CLASS(ms_timer_class);
return(MS_SYNC(timer));
}
void ms_timer_set_interval(MSTimer *timer, int milisec)
{
MS_SYNC(timer)->ticks=0;
MS_SYNC(timer)->interval=milisec;
timer->interval.tv_sec=milisec/1000;
timer->interval.tv_usec=(milisec % 1000)*1000;
timer->milisec=milisec;
}
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