add dump-mcast for dumping multicast-streams to stdout
[record-dvb] / mcast.c
CommitLineData
5c2e3e44 1#include <strings.h>
2#include <string.h>
3#include <stdio.h>
4#include <stdlib.h>
fbc24ab0 5#include <sys/types.h>
6#include <sys/socket.h>
7#include <netdb.h>
d5eca7f2 8
9#include "common.h"
5c2e3e44 10#include "mcast.h"
11
12int is_mcast(char *url)
13{
14 if (strlen(url) < 7)
15 return 0;
16
17 if (!strncasecmp("udp://",url,6))
18 return 1;
19
20 return 0;
21}
22
23int open_mcast(char *url)
24{
fbc24ab0 25 static struct dvb_host *dvbhost = NULL;
26 struct sockaddr_in server;
27 struct ip_mreq mreq;
d5eca7f2 28 int fd;
29
6bcf6c4c 30 if(!is_mcast(url))
31 return -1;
5c2e3e44 32
fbc24ab0 33 if (!dvbhost) {
34 dvbhost = parse(&(url[6]), "2000");
35 dvbhost->socktype = SOCK_DGRAM;
36 }
d5eca7f2 37
fbc24ab0 38 if (resolve(dvbhost, &server) < 0) {
39 return -1;
40 }
41
42 bzero(&mreq, sizeof(mreq));
43 mreq.imr_multiaddr = server.sin_addr;
44 mreq.imr_interface.s_addr = htonl(INADDR_ANY);
45
46 if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
47 perror("socket");
48 return -1;
49 }
50
51 if (bind(fd, (struct sockaddr*)&server, sizeof(server)) < 0) {
52 perror("bind");
53 return -1;
54 }
55
56 if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
57 perror("setsockopt");
58 return -1;
59 }
d5eca7f2 60
61 return fd;
5c2e3e44 62}
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