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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "msqueue.h"
#include <string.h>
MSQueue * ms_queue_new()
{
MSQueue *q=g_malloc(sizeof(MSQueue));
memset(q,0,sizeof(MSQueue));
return q;
}
MSMessage *ms_queue_get(MSQueue *q)
{
MSMessage *b=q->last;
if (b==NULL) return NULL;
q->last=b->prev;
if (b->prev==NULL) q->first=NULL; /* it was the only element of the queue*/
q->size--;
b->next=b->prev=NULL;
return(b);
}
void ms_queue_put(MSQueue *q, MSMessage *m)
{
MSMessage *mtmp=q->first;
g_return_if_fail(m!=NULL);
q->first=m;
m->next=mtmp;
if (mtmp!=NULL)
{
mtmp->prev=m;
}
else q->last=m; /* it was the first element of the q */
q->size++;
}
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