diff options
Diffstat (limited to 'lib/libdvbapi/dvbnet.c')
| -rw-r--r-- | lib/libdvbapi/dvbnet.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/lib/libdvbapi/dvbnet.c b/lib/libdvbapi/dvbnet.c new file mode 100644 index 0000000..f0f08f9 --- /dev/null +++ b/lib/libdvbapi/dvbnet.c @@ -0,0 +1,104 @@ +/* + * libdvbnet - a DVB network support library + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <sys/param.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <linux/dvb/net.h> +#include <errno.h> +#include "dvbnet.h" + +int dvbnet_open(int adapter, int netdeviceid) +{ + char filename[PATH_MAX+1]; + int fd; + + sprintf(filename, "/dev/dvb/adapter%i/net%i", adapter, netdeviceid); + if ((fd = open(filename, O_RDWR)) < 0) { + // if that failed, try a flat /dev structure + sprintf(filename, "/dev/dvb%i.net%i", adapter, netdeviceid); + fd = open(filename, O_RDWR); + } + + return fd; +} + +int dvbnet_add_interface(int fd, uint16_t pid, enum dvbnet_encap encapsulation) +{ + struct dvb_net_if params; + int status; + + memset(¶ms, 0, sizeof(params)); + params.pid = pid; + + switch(encapsulation) { + case DVBNET_ENCAP_MPE: + params.feedtype = DVB_NET_FEEDTYPE_MPE; + break; + + case DVBNET_ENCAP_ULE: + params.feedtype = DVB_NET_FEEDTYPE_ULE; + break; + + default: + return -EINVAL; + } + + status = ioctl(fd, NET_ADD_IF, ¶ms); + if (status < 0) + return status; + return params.if_num; +} + +int dvbnet_get_interface(int fd, int ifnum, uint16_t *pid, enum dvbnet_encap *encapsulation) +{ + struct dvb_net_if info; + int res; + + memset(&info, 0, sizeof(struct dvb_net_if)); + info.if_num = ifnum; + + if ((res = ioctl(fd, NET_GET_IF, &info)) < 0) + return res; + + *pid = info.pid; + switch(info.feedtype) { + case DVB_NET_FEEDTYPE_MPE: + *encapsulation = DVBNET_ENCAP_MPE; + break; + + case DVB_NET_FEEDTYPE_ULE: + *encapsulation = DVBNET_ENCAP_ULE; + break; + + default: + return -EINVAL; + } + return 0; +} + +int dvbnet_remove_interface(int fd, int ifnum) +{ + return ioctl(fd, NET_REMOVE_IF, ifnum); +} |