/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstudpsink.h" #define UDP_DEFAULT_HOST "localhost" #define UDP_DEFAULT_PORT 4951 #define UDP_DEFAULT_CONTROL 1 /* elementfactory information */ GstElementDetails gst_udpsink_details = { "UDP packet sender", "Sink/Network", "LGPL", "Send data over the network via UDP", VERSION, "Wim Taymans ", "(C) 2001", }; /* UDPSink signals and args */ enum { FRAME_ENCODED, /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_HOST, ARG_PORT, ARG_CONTROL, ARG_MTU /* FILL ME */ }; #define GST_TYPE_UDPSINK_CONTROL (gst_udpsink_control_get_type()) static GType gst_udpsink_control_get_type(void) { static GType udpsink_control_type = 0; static GEnumValue udpsink_control[] = { {CONTROL_NONE, "1", "none"}, {CONTROL_UDP, "2", "udp"}, {CONTROL_TCP, "3", "tcp"}, {CONTROL_ZERO, NULL, NULL}, }; if (!udpsink_control_type) { udpsink_control_type = g_enum_register_static("GstUDPSinkControl", udpsink_control); } return udpsink_control_type; } static void gst_udpsink_class_init (GstUDPSink *klass); static void gst_udpsink_init (GstUDPSink *udpsink); static void gst_udpsink_set_clock (GstElement *element, GstClock *clock); static void gst_udpsink_chain (GstPad *pad,GstData *_data); static GstElementStateReturn gst_udpsink_change_state (GstElement *element); static void gst_udpsink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gst_udpsink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static GstElementClass *parent_class = NULL; /*static guint gst_udpsink_signals[LAST_SIGNAL] = { 0 }; */ GType gst_udpsink_get_type (void) { static GType udpsink_type = 0; if (!udpsink_type) { static const GTypeInfo udpsink_info = { sizeof(GstUDPSinkClass), NULL, NULL, (GClassInitFunc)gst_udpsink_class_init, NULL, NULL, sizeof(GstUDPSink), 0, (GInstanceInitFunc)gst_udpsink_init, NULL }; udpsink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstUDPSink", &udpsink_info, 0); } return udpsink_type; } static void gst_udpsink_class_init (GstUDPSink *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*) klass; gstelement_class = (GstElementClass*) klass; parent_class = g_type_class_ref (GST_TYPE_ELEMENT); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HOST, g_param_spec_string ("host", "host", "The host/IP/Multicast group to send the packets to", UDP_DEFAULT_HOST, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PORT, g_param_spec_int ("port", "port", "The port to send the packets to", 0, 32768, UDP_DEFAULT_PORT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_CONTROL, g_param_spec_enum ("control", "control", "The type of control", GST_TYPE_UDPSINK_CONTROL, CONTROL_UDP, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_MTU, g_param_spec_int ("mtu", "mtu", "maximun transmit unit", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */ gobject_class->set_property = gst_udpsink_set_property; gobject_class->get_property = gst_udpsink_get_property; gstelement_class->change_state = gst_udpsink_change_state; gstelement_class->set_clock = gst_udpsink_set_clock; } static GstPadLinkReturn gst_udpsink_sinkconnect (GstPad *pad, GstCaps *caps) { GstUDPSink *udpsink; struct sockaddr_in serv_addr; struct hostent *serverhost; int fd; FILE *f; guint bc_val; #ifndef GST_DISABLE_LOADSAVE xmlDocPtr doc; xmlChar *buf; int buf_size; udpsink = GST_UDPSINK (gst_pad_get_parent (pad)); memset(&serv_addr, 0, sizeof(serv_addr)); /* its a name rather than an ipnum */ serverhost = gethostbyname(udpsink->host); if (serverhost == (struct hostent *)0) { perror("gethostbyname"); return GST_PAD_LINK_REFUSED; } memmove(&serv_addr.sin_addr,serverhost->h_addr, serverhost->h_length); serv_addr.sin_family = AF_INET; serv_addr.sin_port = htons(udpsink->port+1); doc = xmlNewDoc ("1.0"); doc->xmlRootNode = xmlNewDocNode (doc, NULL, "NewCaps", NULL); gst_caps_save_thyself (caps, doc->xmlRootNode); switch (udpsink->control) { case CONTROL_UDP: if ((fd = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) { perror("socket"); return GST_PAD_LINK_REFUSED; } /* We can only do broadcast in udp */ bc_val = 1; setsockopt (fd,SOL_SOCKET, SO_BROADCAST, &bc_val, sizeof (bc_val)); xmlDocDumpMemory(doc, &buf, &buf_size); if (sendto (fd, buf, buf_size, 0, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1) { perror("sending"); return GST_PAD_LINK_REFUSED; } close (fd); break; case CONTROL_TCP: if ((fd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) { perror("socket"); return GST_PAD_LINK_REFUSED; } if (connect(fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) != 0) { g_printerr ("udpsink: connect to %s port %d failed: %s\n", udpsink->host, udpsink->port, g_strerror(errno)); return GST_PAD_LINK_REFUSED; } f = fdopen (dup (fd), "wb"); xmlDocDump(f, doc); fclose (f); close (fd); break; case CONTROL_NONE: return GST_PAD_LINK_OK; break; default: return GST_PAD_LINK_REFUSED; break; } #endif return GST_PAD_LINK_OK; } static void gst_udpsink_set_clock (GstElement *element, GstClock *clock) { GstUDPSink *udpsink; udpsink = GST_UDPSINK (element); udpsink->clock = clock; } static void gst_udpsink_init (GstUDPSink *udpsink) { /* create the sink and src pads */ udpsink->sinkpad = gst_pad_new ("sink", GST_PAD_SINK); gst_element_add_pad (GST_ELEMENT (udpsink), udpsink->sinkpad); gst_pad_set_chain_function (udpsink->sinkpad, gst_udpsink_chain); gst_pad_set_link_function (udpsink->sinkpad, gst_udpsink_sinkconnect); udpsink->host = g_strdup (UDP_DEFAULT_HOST); udpsink->port = UDP_DEFAULT_PORT; udpsink->control = CONTROL_UDP; udpsink->mtu = 1024; udpsink->clock = NULL; } static void gst_udpsink_chain (GstPad *pad, GstData *_data) { GstBuffer *buf = GST_BUFFER (_data); GstUDPSink *udpsink; guint tolen, i; g_return_if_fail (pad != NULL); g_return_if_fail (GST_IS_PAD (pad)); g_return_if_fail (buf != NULL); udpsink = GST_UDPSINK (GST_OBJECT_PARENT (pad)); if (udpsink->clock) { GstClockID id = gst_clock_new_single_shot_id (udpsink->clock, GST_BUFFER_TIMESTAMP (buf)); GST_DEBUG ("udpsink: clock wait: %" G_GUINT64_FORMAT "\n", GST_BUFFER_TIMESTAMP (buf)); gst_element_clock_wait (GST_ELEMENT (udpsink), id, NULL); gst_clock_id_free (id); } tolen = sizeof(udpsink->theiraddr); /* if (sendto (udpsink->sock, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), 0, (struct sockaddr *) &udpsink->theiraddr, tolen) == -1) { perror("sending"); } */ /* MTU */ for (i = 0; i < GST_BUFFER_SIZE (buf); i += udpsink->mtu) { if (GST_BUFFER_SIZE (buf) - i > udpsink->mtu) { if (sendto (udpsink->sock, GST_BUFFER_DATA (buf) + i, udpsink->mtu, 0, (struct sockaddr *) &udpsink->theiraddr, tolen) == -1) { perror("sending"); } } else { if (sendto (udpsink->sock, GST_BUFFER_DATA (buf) + i, GST_BUFFER_SIZE (buf) -i, 0, (struct sockaddr *) &udpsink->theiraddr, tolen) == -1) { perror("sending"); } } } gst_buffer_unref(buf); } static void gst_udpsink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstUDPSink *udpsink; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_UDPSINK(object)); udpsink = GST_UDPSINK(object); switch (prop_id) { case ARG_HOST: if (udpsink->host != NULL) g_free(udpsink->host); if (g_value_get_string (value) == NULL) udpsink->host = NULL; else udpsink->host = g_strdup (g_value_get_string (value)); break; case ARG_PORT: udpsink->port = g_value_get_int (value); break; case ARG_CONTROL: udpsink->control = g_value_get_enum (value); break; case ARG_MTU: udpsink->mtu = g_value_get_int (value); break; default: break; } } static void gst_udpsink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GstUDPSink *udpsink; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_UDPSINK(object)); udpsink = GST_UDPSINK(object); switch (prop_id) { case ARG_HOST: g_value_set_string (value, udpsink->host); break; case ARG_PORT: g_value_set_int (value, udpsink->port); break; case ARG_CONTROL: g_value_set_enum (value, udpsink->control); break; case ARG_MTU: g_value_set_int (value, udpsink->mtu); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* create a socket for sending to remote machine */ static gboolean gst_udpsink_init_send (GstUDPSink *sink) { struct hostent *he; struct in_addr addr; guint bc_val; bzero (&sink->theiraddr, sizeof (sink->theiraddr)); sink->theiraddr.sin_family = AF_INET; /* host byte order */ sink->theiraddr.sin_port = htons (sink->port); /* short, network byte order */ /* if its an IP address */ if (inet_aton (sink->host, &addr)) { /* check if its a multicast address */ if ((ntohl (addr.s_addr) & 0xe0000000) == 0xe0000000) { sink->multi_addr.imr_multiaddr.s_addr = addr.s_addr; sink->multi_addr.imr_interface.s_addr = INADDR_ANY; sink->theiraddr.sin_addr = sink->multi_addr.imr_multiaddr; /* Joining the multicast group */ setsockopt (sink->sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &sink->multi_addr, sizeof(sink->multi_addr)); } else { sink->theiraddr.sin_addr = *((struct in_addr *) &addr); } } /* we dont need to lookup for localhost */ else if (strcmp (sink->host, UDP_DEFAULT_HOST) == 0 && inet_aton ("127.0.0.1", &addr)) { sink->theiraddr.sin_addr = *((struct in_addr *) &addr); } /* if its a hostname */ else if ((he = gethostbyname (sink->host))) { sink->theiraddr.sin_addr = *((struct in_addr *) he->h_addr); } else { perror("hostname lookup error?"); return FALSE; } if ((sink->sock = socket (AF_INET, SOCK_DGRAM, 0)) == -1) { perror("socket"); return FALSE; } bc_val = 1; setsockopt (sink->sock, SOL_SOCKET, SO_BROADCAST, &bc_val, sizeof (bc_val)); GST_FLAG_SET (sink, GST_UDPSINK_OPEN); return TRUE; } static void gst_udpsink_close (GstUDPSink *sink) { close (sink->sock); GST_FLAG_UNSET (sink, GST_UDPSINK_OPEN); } static GstElementStateReturn gst_udpsink_change_state (GstElement *element) { g_return_val_if_fail (GST_IS_UDPSINK (element), GST_STATE_FAILURE); if (GST_STATE_PENDING (element) == GST_STATE_NULL) { if (GST_FLAG_IS_SET (element, GST_UDPSINK_OPEN)) gst_udpsink_close (GST_UDPSINK (element)); } else { if (!GST_FLAG_IS_SET (element, GST_UDPSINK_OPEN)) { if (!gst_udpsink_init_send (GST_UDPSINK (element))) return GST_STATE_FAILURE; } } if (GST_ELEMENT_CLASS (parent_class)->change_state) return GST_ELEMENT_CLASS (parent_class)->change_state (element); return GST_STATE_SUCCESS; }