utils.h

/***************************************************************************
 *            utils.h
 *
 *  Wed Feb 23 14:15:36 2005
 *  Copyright  2005  Simon Morlat
 *  Email simon.morlat@linphone.org
 ****************************************************************************/
/*
  The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) 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
*/
 
#ifndef UTILS_H
#define UTILS_H
 
#include "ortp/event.h"
 
struct _OList {
        struct _OList *next;
        struct _OList *prev;
        void *data;
};
 
typedef struct _OList OList;
 
 
#define o_list_next(elem) ((elem)->next)
 
OList * o_list_append(OList *elem, void * data);
OList * o_list_remove(OList *list, void *data);
OList * o_list_free(OList *elem);
OList *o_list_remove_link(OList *list, OList *elem);
 
#ifndef MIN
#define MIN(a,b) (((a)>(b)) ? (b) : (a))
#endif
#ifndef MAX
#define MAX(a,b) (((a)>(b)) ? (a) : (b))
#endif
 
#define return_if_fail(expr) if (!(expr)) {printf("%s:%i- assertion"#expr "failed\n",__FILE__,__LINE__); return;}
#define return_val_if_fail(expr,ret) if (!(expr)) {printf("%s:%i- assertion" #expr "failed\n",__FILE__,__LINE__); return (ret);}
 
 
#define INT_TO_POINTER(truc)    ((long)(long)(truc))
#define POINTER_TO_INT(truc)    ((int)(long)(truc))
 
typedef struct _dwsplit_t{
#ifdef ORTP_BIGENDIAN
        uint16_t hi;
        uint16_t lo;
#else
        uint16_t lo;
        uint16_t hi;
#endif
} dwsplit_t;
 
typedef union{
        dwsplit_t split;
        uint32_t one;
} poly32_t;
 
#ifdef ORTP_BIGENDIAN
#define hton24(x) (x)
#else
#define hton24(x) ((( (x) & 0x00ff0000) >>16) | (( (x) & 0x000000ff) <<16) | ( (x) & 0x0000ff00) )
#endif
#define ntoh24(x) hton24(x)
 
#if defined(WIN32) || defined(_WIN32_WCE)
#define is_would_block_error(errnum)    (errnum==WSAEWOULDBLOCK)
#else
#define is_would_block_error(errnum)    (errnum==EWOULDBLOCK || errnum==EAGAIN)
#endif
 
void ortp_ev_queue_put(OrtpEvQueue *q, OrtpEvent *ev);
 
uint64_t ortp_timeval_to_ntp(const struct timeval *tv);
 
#endif