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115 lines
3.2 KiB
115 lines
3.2 KiB
/*
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The mediastreamer library aims at providing modular media processing and I/O
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for linphone, but also for any telephony application.
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Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; 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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#include "mstimer.h"
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <signal.h>
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static MSTimerClass *ms_timer_class=NULL;
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void ms_timer_init(MSTimer *sync)
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{
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ms_sync_init(MS_SYNC(sync));
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MS_SYNC(sync)->attached_filters=sync->filters;
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memset(sync->filters,0,MSTIMER_MAX_FILTERS*sizeof(MSFilter*));
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MS_SYNC(sync)->samples_per_tick=160;
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ms_timer_set_interval(sync,20);
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sync->state=MS_TIMER_STOPPED;
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}
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void ms_timer_class_init(MSTimerClass *klass)
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{
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ms_sync_class_init(MS_SYNC_CLASS(klass));
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MS_SYNC_CLASS(klass)->max_filters=MSTIMER_MAX_FILTERS;
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MS_SYNC_CLASS(klass)->synchronize=(MSSyncSyncFunc)ms_timer_synchronize;
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MS_SYNC_CLASS(klass)->destroy=(MSSyncDestroyFunc)ms_timer_destroy;
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/* no need to overload these function*/
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MS_SYNC_CLASS(klass)->attach=ms_sync_attach_generic;
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MS_SYNC_CLASS(klass)->detach=ms_sync_detach_generic;
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}
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void ms_timer_destroy(MSTimer *timer)
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{
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g_free(timer);
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}
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void ms_timer_synchronize(MSTimer *timer)
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{
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/* //printf("ticks=%i \n",MS_SYNC(timer)->ticks); */
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if (timer->state==MS_TIMER_STOPPED){
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timer->state=MS_TIMER_RUNNING;
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gettimeofday(&timer->orig,NULL);
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timer->sync.time=0;
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}
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else {
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gint32 diff,time;
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struct timeval tv,cur;
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gettimeofday(&cur,NULL);
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time=((cur.tv_usec-timer->orig.tv_usec)/1000 ) + ((cur.tv_sec-timer->orig.tv_sec)*1000 );
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if ( (diff=time-timer->sync.time)>50){
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g_warning("Must catchup %i miliseconds.",diff);
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}
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while((diff = timer->sync.time-time) > 0)
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{
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tv.tv_sec = diff/1000;
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tv.tv_usec = (diff%1000)*1000;
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select(0,NULL,NULL,NULL,&tv);
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gettimeofday(&cur,NULL);
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time=((cur.tv_usec-timer->orig.tv_usec)/1000 ) + ((cur.tv_sec-timer->orig.tv_sec)*1000 );
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}
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}
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timer->sync.time+=timer->milisec;
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return;
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}
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MSSync *ms_timer_new()
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{
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MSTimer *timer;
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timer=g_malloc(sizeof(MSTimer));
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ms_timer_init(timer);
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if (ms_timer_class==NULL)
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{
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ms_timer_class=g_new(MSTimerClass,1);
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ms_timer_class_init(ms_timer_class);
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}
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MS_SYNC(timer)->klass=MS_SYNC_CLASS(ms_timer_class);
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return(MS_SYNC(timer));
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}
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void ms_timer_set_interval(MSTimer *timer, int milisec)
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{
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MS_SYNC(timer)->ticks=0;
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MS_SYNC(timer)->interval=milisec;
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timer->interval.tv_sec=milisec/1000;
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timer->interval.tv_usec=(milisec % 1000)*1000;
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timer->milisec=milisec;
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}
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