/* GStreamer * Copyright (C) <2007> Leandro Melo de Sales * * 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. */ /** * SECTION:element-dccpclientsrc * @see_also: dccpclientsink, dccpserversink, dccpserversrc * * This element connect to a DCCP server and send data to it. * DCCP (Datagram * Congestion Control Protocol) is a Transport Layer protocol like * TCP and UDP. * * * Example pipeline * * |[ * gst-launch -v dccpclientsrc host=localhost port=9011 ccid=2 ! decodebin ! alsasink * ]| Client * |[ * gst-launch -v filesrc location=music.mp3 ! mp3parse ! dccpserversink port=9011 ccid=2 * ]| Server * * This example pipeline will send a MP3 stream to the client using DCCP. * The client will decode the MP3 and play it. Run the server pipeline * first than the client pipeline. If you want, you can run more than one dccpclientsrc * to connect to the same server (see wait-connections property at dccpserversink). * * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstdccpclientsrc.h" #include "gstdccp.h" #include #ifdef HAVE_FIONREAD_IN_SYS_FILIO #include #endif #define DCCP_DEFAULT_CAPS NULL /* signals */ enum { SIGNAL_CONNECTED, LAST_SIGNAL }; /* properties */ enum { PROP_0, PROP_PORT, PROP_HOST, PROP_SOCK_FD, PROP_CLOSED, PROP_CCID, PROP_CAPS }; static gboolean gst_dccp_client_src_stop (GstBaseSrc * bsrc); GST_DEBUG_CATEGORY_STATIC (dccpclientsrc_debug); static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); GST_BOILERPLATE (GstDCCPClientSrc, gst_dccp_client_src, GstPushSrc, GST_TYPE_PUSH_SRC); static guint gst_dccp_client_src_signals[LAST_SIGNAL] = { 0 }; /* * Read a buffer from the client socket * * @return GST_FLOW_OK if the send operation was successful, GST_FLOW_ERROR otherwise. */ static GstFlowReturn gst_dccp_client_src_create (GstPushSrc * psrc, GstBuffer ** outbuf) { GstDCCPClientSrc *src; GstFlowReturn ret = GST_FLOW_OK; src = GST_DCCP_CLIENT_SRC (psrc); GST_LOG_OBJECT (src, "reading a buffer"); ret = gst_dccp_read_buffer (GST_ELEMENT (src), src->sock_fd, outbuf); if (ret == GST_FLOW_OK) { GST_LOG_OBJECT (src, "Returning buffer from _get of size %d, ts %" GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT, GST_BUFFER_SIZE (*outbuf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)), GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)), GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf)); if (!gst_caps_is_equal (src->caps, GST_CAPS_ANY)) { gst_buffer_set_caps (*outbuf, src->caps); } } return ret; } /* * Set the value of a property for the client src. */ static void gst_dccp_client_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object); switch (prop_id) { case PROP_PORT: src->port = g_value_get_int (value); break; case PROP_HOST: if (!g_value_get_string (value)) { g_warning ("host property cannot be NULL"); break; } g_free (src->host); src->host = g_strdup (g_value_get_string (value)); break; case PROP_SOCK_FD: src->sock_fd = g_value_get_int (value); break; case PROP_CLOSED: src->closed = g_value_get_boolean (value); break; case PROP_CCID: src->ccid = g_value_get_int (value); break; case PROP_CAPS: { const GstCaps *new_caps_val = gst_value_get_caps (value); GstCaps *new_caps; GstCaps *old_caps; if (new_caps_val == NULL) { new_caps = gst_caps_new_any (); } else { new_caps = gst_caps_copy (new_caps_val); } old_caps = src->caps; src->caps = new_caps; if (old_caps) gst_caps_unref (old_caps); gst_pad_set_caps (GST_BASE_SRC (src)->srcpad, new_caps); break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* * Get a given property value for the client src. */ static void gst_dccp_client_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object); switch (prop_id) { case PROP_PORT: g_value_set_int (value, src->port); break; case PROP_HOST: g_value_set_string (value, src->host); break; case PROP_SOCK_FD: g_value_set_int (value, src->sock_fd); break; case PROP_CLOSED: g_value_set_boolean (value, src->closed); break; case PROP_CCID: g_value_set_int (value, src->ccid); break; case PROP_CAPS: gst_value_set_caps (value, src->caps); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* * Starts the element. If the sockfd property was not the default, this method * will create a new socket and connect to the server. * * @param bsrc - the element * @return TRUE if the send operation was successful, FALSE otherwise. */ static gboolean gst_dccp_client_src_start (GstBaseSrc * bsrc) { GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (bsrc); if (src->sock_fd == DCCP_DEFAULT_SOCK_FD) { gchar *ip = NULL; /* look up name if we need to */ if (!(ip = gst_dccp_host_to_ip (GST_ELEMENT (src), src->host))) { GST_ERROR_OBJECT (src, "cannot resolve hostname"); gst_dccp_client_src_stop (GST_BASE_SRC (src)); return FALSE; } /* name the server socket */ memset (&src->server_sin, 0, sizeof (src->server_sin)); src->server_sin.sin_family = AF_INET; /* network socket */ src->server_sin.sin_port = htons (src->port); /* on port */ src->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */ g_free (ip); /* create socket */ if ((src->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (src))) < 0) { return FALSE; } if (!gst_dccp_set_ccid (GST_ELEMENT (src), src->sock_fd, src->ccid)) { gst_dccp_client_src_stop (GST_BASE_SRC (src)); return FALSE; } if (!gst_dccp_connect_to_server (GST_ELEMENT (src), src->server_sin, src->sock_fd)) { gst_dccp_client_src_stop (GST_BASE_SRC (src)); return FALSE; } /* the socket is connected */ g_signal_emit (src, gst_dccp_client_src_signals[SIGNAL_CONNECTED], 0, src->sock_fd); } return TRUE; } static void gst_dccp_client_src_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&srctemplate)); gst_element_class_set_metadata (element_class, "DCCP client source", "Source/Network", "Receive data as a client over the network via DCCP", "E-Phone Team at Federal University of Campina Grande "); } static void gst_dccp_client_src_init (GstDCCPClientSrc * this, GstDCCPClientSrcClass * g_class) { this->port = DCCP_DEFAULT_PORT; this->host = g_strdup (DCCP_DEFAULT_HOST); this->sock_fd = DCCP_DEFAULT_SOCK_FD; this->closed = DCCP_DEFAULT_CLOSED; this->ccid = DCCP_DEFAULT_CCID; this->caps = NULL; gst_base_src_set_format (GST_BASE_SRC (this), GST_FORMAT_TIME); /* Checking if the version of the gstreamer is bigger that 0.10.15 */ #if ((GST_VERSION_MAJOR > 0) || \ (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR > 10) || \ (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && GST_VERSION_MICRO >= 15)) gst_base_src_set_do_timestamp (GST_BASE_SRC (this), TRUE); #endif /* FIXME is this correct? */ gst_base_src_set_live (GST_BASE_SRC (this), TRUE); } static void gst_dccp_client_src_finalize (GObject * gobject) { GstDCCPClientSrc *this = GST_DCCP_CLIENT_SRC (gobject); if (this->caps) { gst_caps_unref (this->caps); this->caps = NULL; } g_free (this->host); G_OBJECT_CLASS (parent_class)->finalize (gobject); } static gboolean gst_dccp_client_src_stop (GstBaseSrc * bsrc) { GstDCCPClientSrc *src; src = GST_DCCP_CLIENT_SRC (bsrc); if (src->sock_fd != DCCP_DEFAULT_SOCK_FD && src->closed) { gst_dccp_socket_close (GST_ELEMENT (src), &(src->sock_fd)); } return TRUE; } /* * Define the gst class, callbacks, etc. */ static void gst_dccp_client_src_class_init (GstDCCPClientSrcClass * klass) { GObjectClass *gobject_class; GstBaseSrcClass *gstbasesrc_class; GstPushSrcClass *gstpush_src_class; gobject_class = (GObjectClass *) klass; gstbasesrc_class = (GstBaseSrcClass *) klass; gstpush_src_class = (GstPushSrcClass *) klass; gobject_class->set_property = gst_dccp_client_src_set_property; gobject_class->get_property = gst_dccp_client_src_get_property; gobject_class->finalize = gst_dccp_client_src_finalize; g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT, g_param_spec_int ("port", "Port", "The port to receive packets from", 0, G_MAXUINT16, DCCP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_HOST, g_param_spec_string ("host", "Host", "The host IP address to receive packets from", DCCP_DEFAULT_HOST, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SOCK_FD, g_param_spec_int ("sockfd", "Socket fd", "The socket file descriptor", -1, G_MAXINT, DCCP_DEFAULT_SOCK_FD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CLOSED, g_param_spec_boolean ("close-socket", "Close socket", "Close socket at the end of stream", DCCP_DEFAULT_CLOSED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CAPS, g_param_spec_boxed ("caps", "Caps", "The caps of the source pad", GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_CCID, g_param_spec_int ("ccid", "CCID", "The Congestion Control IDentified to be used", 2, G_MAXINT, DCCP_DEFAULT_CCID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /* signals */ /** * GstDccpClientSrc::connected: * @src: the gstdccpclientsrc element that emitted this signal * @fd: the connected socket file descriptor * * Reports that the element has connected, giving the fd of the socket */ gst_dccp_client_src_signals[SIGNAL_CONNECTED] = g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GstDCCPClientSrcClass, connected), NULL, NULL, gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); gstbasesrc_class->start = gst_dccp_client_src_start; gstbasesrc_class->stop = gst_dccp_client_src_stop; gstpush_src_class->create = gst_dccp_client_src_create; GST_DEBUG_CATEGORY_INIT (dccpclientsrc_debug, "dccpclientsrc", 0, "DCCP Client Source"); }