DVBStreamer: udp.h Source File

00001 /*
00002 Copyright (C) 2006  Adam Charrett
00003 
00004 This program is free software; you can redistribute it and/or
00005 modify it under the terms of the GNU General Public License
00006 as published by the Free Software Foundation; either version 2
00007 of the License, or (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU General Public License for more details.
00013 
00014 You should have received a copy of the GNU General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
00017 
00018 udp.h
00019 
00020 Simplify UDP socket creation and packet sending.
00021 
00022 */
00023 #ifndef _UDP_H
00024 #define _UDP_H
00025 #include <netinet/in.h>
00026 
00036 #define MTU 1400
00037 
00041 #define IP_HEADER (5*4)
00042 
00046 #define UDP_HEADER (2*4)
00047 
00052 #define UDP_PAYLOAD_SIZE (MTU - (IP_HEADER + UDP_HEADER))
00053 
00059 int UDPCreateSocket(sa_family_t family);
00060 
00069 #define UDPSendTo(_socketfd, _data, _data_len, _to, _to_len) \
00070     sendto(_socketfd, _data, _data_len, 0, _to, _to_len)
00071 
00080 #define UDPReceiveFrom(_socketfd, _data, _data_len, _from, _from_len) \
00081     recvfrom(_socketfd, _data, _data_len, 0, _from, _from_len)
00082 
00084 #endif