diff options
Diffstat (limited to 'gst/dccp/gstdccpclientsink.c')
-rw-r--r-- | gst/dccp/gstdccpclientsink.c | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/gst/dccp/gstdccpclientsink.c b/gst/dccp/gstdccpclientsink.c new file mode 100644 index 00000000..d8fca1fb --- /dev/null +++ b/gst/dccp/gstdccpclientsink.c @@ -0,0 +1,322 @@ +/* GStreamer + * Copyright (C) <2007> Leandro Melo de Sales <leandroal@gmail.com> + * + * 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-dccpclientsink + * @see_also: dccpserversrc, dccpclientsrc, dccpserversink + * + * This element connect to a DCCP server and send data to it. + * <ulink url="http://www.linuxfoundation.org/en/Net:DCCP">DCCP</ulink> (Datagram + * Congestion Control Protocol) is a Transport Layer protocol like + * TCP and UDP. + * + * <refsect2> + * <title>Example pipeline</title> + * <para> + * |[ + * gst-launch -v filesrc location=music.mp3 ! mp3parse ! dccpclientsink host=localhost port=9011 ccid=2 + * ]| Client + * |[ + * gst-launch -v dccpserversrc port=9011 ccid=2 ! decodebin ! alsasink + * ]| Server + * + * This example pipeline will send a MP3 stream to the server using DCCP. + * The server will decode the MP3 and play it. + * Run the server pipeline first than the client pipeline. + * </para> + * </refsect2> + */ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstdccpclientsink.h" +#include "gstdccp.h" +#include <string.h> /* memset */ +#include <unistd.h> +#include <arpa/inet.h> +#include <fcntl.h> + +/* signals */ +enum +{ + SIGNAL_CONNECTED, + LAST_SIGNAL +}; + +/* properties */ +enum +{ + PROP_0, + PROP_PORT, + PROP_HOST, + PROP_SOCK_FD, + PROP_CCID, + PROP_CLOSE_FD +}; + +static gboolean gst_dccp_client_sink_stop (GstBaseSink * bsink); +static gboolean gst_dccp_client_sink_start (GstBaseSink * bsink); +static GstFlowReturn gst_dccp_client_sink_render (GstBaseSink * bsink, + GstBuffer * buf); + +GST_DEBUG_CATEGORY_STATIC (dccpclientsink_debug); + +static const GstElementDetails gst_dccp_client_sink_details = +GST_ELEMENT_DETAILS ("DCCP client sink", + "Sink/Network", + "Send data as a client over the network via DCCP", + "E-Phone Team at Federal University of Campina Grande <leandroal@gmail.com>"); + +static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +GST_BOILERPLATE (GstDCCPClientSink, gst_dccp_client_sink, GstBaseSink, + GST_TYPE_BASE_SINK); + +static guint gst_dccp_client_sink_signals[LAST_SIGNAL] = { 0 }; + +static GstFlowReturn +gst_dccp_client_sink_render (GstBaseSink * bsink, GstBuffer * buf) +{ + GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (bsink); + + return gst_dccp_send_buffer (GST_ELEMENT (sink), buf, sink->sock_fd, + sink->pksize); +} + +/* + * Set the value of a property for the client sink. + */ +static void +gst_dccp_client_sink_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (object); + + switch (prop_id) { + case PROP_PORT: + sink->port = g_value_get_int (value); + break; + case PROP_SOCK_FD: + sink->sock_fd = 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 (sink->host); + sink->host = g_strdup (g_value_get_string (value)); + break; + case PROP_CLOSE_FD: + sink->closed = g_value_get_boolean (value); + break; + case PROP_CCID: + sink->ccid = g_value_get_int (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +/* + * Get a given property value for the client sink. + */ +static void +gst_dccp_client_sink_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (object); + + switch (prop_id) { + case PROP_PORT: + g_value_set_int (value, sink->port); + break; + case PROP_SOCK_FD: + g_value_set_int (value, sink->sock_fd); + break; + case PROP_HOST: + g_value_set_string (value, sink->host); + break; + case PROP_CLOSE_FD: + g_value_set_boolean (value, sink->closed); + break; + case PROP_CCID: + g_value_set_int (value, sink->ccid); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static gboolean +gst_dccp_client_sink_start (GstBaseSink * bsink) +{ + GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (bsink); + + if (sink->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 (sink), sink->host))) { + GST_ERROR_OBJECT (sink, "cannot resolve hostname"); + gst_dccp_client_sink_stop (GST_BASE_SINK (sink)); + return FALSE; + } + + /* name the server socket */ + memset (&sink->server_sin, 0, sizeof (sink->server_sin)); + sink->server_sin.sin_family = AF_INET; /* network socket */ + sink->server_sin.sin_port = htons (sink->port); /* on port */ + sink->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */ + g_free (ip); + + /* create socket */ + if ((sink->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (sink))) < 0) { + return FALSE; + } + + if (!gst_dccp_set_ccid (GST_ELEMENT (sink), sink->sock_fd, sink->ccid)) { + gst_dccp_client_sink_stop (GST_BASE_SINK (sink)); + return FALSE; + } + + if (!gst_dccp_connect_to_server (GST_ELEMENT (sink), sink->server_sin, + sink->sock_fd)) { + gst_dccp_client_sink_stop (GST_BASE_SINK (sink)); + return FALSE; + } + + /* the socket is connected */ + g_signal_emit (sink, gst_dccp_client_sink_signals[SIGNAL_CONNECTED], 0, + sink->sock_fd); + } + + sink->pksize = + gst_dccp_get_max_packet_size (GST_ELEMENT (sink), sink->sock_fd); + + return TRUE; +} + +static void +gst_dccp_client_sink_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 (&sinktemplate)); + + gst_element_class_set_details (element_class, &gst_dccp_client_sink_details); +} + +static void +gst_dccp_client_sink_init (GstDCCPClientSink * this, + GstDCCPClientSinkClass * 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; +} + +static gboolean +gst_dccp_client_sink_stop (GstBaseSink * bsink) +{ + GstDCCPClientSink *sink; + + sink = GST_DCCP_CLIENT_SINK (bsink); + + if (sink->sock_fd != -1 && sink->closed) { + GST_DEBUG_OBJECT (sink, "closing socket"); + close (sink->sock_fd); + sink->sock_fd = -1; + } + + return TRUE; +} + +/* + * Define the gst class, callbacks, etc. + */ +static void +gst_dccp_client_sink_class_init (GstDCCPClientSinkClass * klass) +{ + GObjectClass *gobject_class; + GstBaseSinkClass *gstbasesink_class; + + gobject_class = (GObjectClass *) klass; + gstbasesink_class = (GstBaseSinkClass *) klass; + + gobject_class->set_property = gst_dccp_client_sink_set_property; + gobject_class->get_property = gst_dccp_client_sink_get_property; + + g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT, + g_param_spec_int ("port", "Port", + "The port to receive the packets from, 0=allocate", 0, G_MAXUINT16, + DCCP_DEFAULT_PORT, G_PARAM_READWRITE)); + +/* FIXME property server_ip */ + g_object_class_install_property (gobject_class, PROP_HOST, + g_param_spec_string ("host", "Host", + "The host IP address to send packets to", DCCP_DEFAULT_HOST, + G_PARAM_READWRITE)); + + 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_object_class_install_property (gobject_class, PROP_CLOSE_FD, + g_param_spec_boolean ("close-socket", "Close", + "Close socket at end of stream", + DCCP_DEFAULT_CLOSED, G_PARAM_READWRITE)); + + 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)); + + /* signals */ + /** + * GstDccpClientSink::connected: + * @sink: the gstdccpclientsink instance + * @fd: the connected socket fd + * + * Sign that the element has connected, return the fd of the socket. + */ + gst_dccp_client_sink_signals[SIGNAL_CONNECTED] = + g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GstDCCPClientSinkClass, connected), NULL, NULL, + gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); + + gstbasesink_class->start = gst_dccp_client_sink_start; + gstbasesink_class->stop = gst_dccp_client_sink_stop; + gstbasesink_class->render = gst_dccp_client_sink_render; + + GST_DEBUG_CATEGORY_INIT (dccpclientsink_debug, "dccpclientsink", 0, + "DCCP Client Sink"); +} |