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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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336 lines
9.9 KiB
C
336 lines
9.9 KiB
C
/* GStreamer
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* Copyright (C) <2007> Leandro Melo de Sales <leandroal@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-dccpclientsink
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* @see_also: dccpserversrc, dccpclientsrc, dccpserversink
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*
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* This element connect to a DCCP server and send data to it.
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* <ulink url="http://www.linuxfoundation.org/en/Net:DCCP">DCCP</ulink> (Datagram
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* Congestion Control Protocol) is a Transport Layer protocol like
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* TCP and UDP.
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*
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* <refsect2>
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* <title>Example pipeline</title>
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* <para>
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* |[
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* gst-launch -v filesrc location=music.mp3 ! mp3parse ! dccpclientsink host=localhost port=9011 ccid=2
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* ]| Client
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* |[
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* gst-launch -v dccpserversrc port=9011 ccid=2 ! decodebin ! alsasink
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* ]| Server
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*
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* This example pipeline will send a MP3 stream to the server using DCCP.
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* The server will decode the MP3 and play it.
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* Run the server pipeline first than the client pipeline.
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* </para>
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstdccpclientsink.h"
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#include "gstdccp.h"
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/* signals */
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enum
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{
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SIGNAL_CONNECTED,
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LAST_SIGNAL
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};
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/* properties */
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enum
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{
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PROP_0,
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PROP_PORT,
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PROP_HOST,
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PROP_SOCK_FD,
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PROP_CCID,
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PROP_CLOSE_FD
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};
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static gboolean gst_dccp_client_sink_stop (GstBaseSink * bsink);
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static gboolean gst_dccp_client_sink_start (GstBaseSink * bsink);
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static GstFlowReturn gst_dccp_client_sink_render (GstBaseSink * bsink,
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GstBuffer * buf);
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static void gst_dccp_client_sink_finalize (GObject * gobject);
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GST_DEBUG_CATEGORY_STATIC (dccpclientsink_debug);
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_BOILERPLATE (GstDCCPClientSink, gst_dccp_client_sink, GstBaseSink,
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GST_TYPE_BASE_SINK);
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static guint gst_dccp_client_sink_signals[LAST_SIGNAL] = { 0 };
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/*
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* Write buffer to client socket.
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*
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* @return GST_FLOW_OK if the send operation was successful, GST_FLOW_ERROR otherwise.
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*/
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static GstFlowReturn
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gst_dccp_client_sink_render (GstBaseSink * bsink, GstBuffer * buf)
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{
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GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (bsink);
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return gst_dccp_send_buffer (GST_ELEMENT (sink), buf, sink->sock_fd,
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sink->pksize);
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}
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/*
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* Set the value of a property for the client sink.
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*/
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static void
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gst_dccp_client_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (object);
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switch (prop_id) {
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case PROP_PORT:
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sink->port = g_value_get_int (value);
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break;
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case PROP_SOCK_FD:
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sink->sock_fd = g_value_get_int (value);
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break;
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case PROP_HOST:
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if (!g_value_get_string (value)) {
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g_warning ("host property cannot be NULL");
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break;
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}
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g_free (sink->host);
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sink->host = g_strdup (g_value_get_string (value));
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break;
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case PROP_CLOSE_FD:
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sink->closed = g_value_get_boolean (value);
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break;
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case PROP_CCID:
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sink->ccid = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/*
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* Get a given property value for the client sink.
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*/
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static void
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gst_dccp_client_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (object);
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switch (prop_id) {
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case PROP_PORT:
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g_value_set_int (value, sink->port);
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break;
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case PROP_SOCK_FD:
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g_value_set_int (value, sink->sock_fd);
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break;
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case PROP_HOST:
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g_value_set_string (value, sink->host);
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break;
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case PROP_CLOSE_FD:
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g_value_set_boolean (value, sink->closed);
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break;
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case PROP_CCID:
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g_value_set_int (value, sink->ccid);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_dccp_client_sink_finalize (GObject * gobject)
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{
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GstDCCPClientSink *this = GST_DCCP_CLIENT_SINK (gobject);
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g_free (this->host);
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G_OBJECT_CLASS (parent_class)->finalize (gobject);
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}
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/*
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* Starts the element. If the sockfd property was not the default, this method
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* will create a new socket and connect to the server.
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*
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* @param bsink - the element
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* @return TRUE if the send operation was successful, FALSE otherwise.
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*/
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static gboolean
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gst_dccp_client_sink_start (GstBaseSink * bsink)
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{
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GstDCCPClientSink *sink = GST_DCCP_CLIENT_SINK (bsink);
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if (sink->sock_fd == DCCP_DEFAULT_SOCK_FD) {
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gchar *ip = NULL;
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/* look up name if we need to */
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if (!(ip = gst_dccp_host_to_ip (GST_ELEMENT (sink), sink->host))) {
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GST_ERROR_OBJECT (sink, "cannot resolve hostname");
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gst_dccp_client_sink_stop (GST_BASE_SINK (sink));
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return FALSE;
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}
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/* name the server socket */
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memset (&sink->server_sin, 0, sizeof (sink->server_sin));
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sink->server_sin.sin_family = AF_INET; /* network socket */
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sink->server_sin.sin_port = htons (sink->port); /* on port */
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sink->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */
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g_free (ip);
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/* create socket */
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if ((sink->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (sink))) < 0) {
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return FALSE;
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}
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if (!gst_dccp_set_ccid (GST_ELEMENT (sink), sink->sock_fd, sink->ccid)) {
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gst_dccp_client_sink_stop (GST_BASE_SINK (sink));
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return FALSE;
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}
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if (!gst_dccp_connect_to_server (GST_ELEMENT (sink), sink->server_sin,
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sink->sock_fd)) {
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gst_dccp_client_sink_stop (GST_BASE_SINK (sink));
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return FALSE;
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}
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/* the socket is connected */
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g_signal_emit (sink, gst_dccp_client_sink_signals[SIGNAL_CONNECTED], 0,
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sink->sock_fd);
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}
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sink->pksize =
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gst_dccp_get_max_packet_size (GST_ELEMENT (sink), sink->sock_fd);
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return TRUE;
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}
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static void
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gst_dccp_client_sink_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details_simple (element_class, "DCCP client sink",
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"Sink/Network",
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"Send data as a client over the network via DCCP",
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"E-Phone Team at Federal University of Campina Grande <leandroal@gmail.com>");
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}
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static void
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gst_dccp_client_sink_init (GstDCCPClientSink * this,
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GstDCCPClientSinkClass * g_class)
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{
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this->port = DCCP_DEFAULT_PORT;
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this->host = g_strdup (DCCP_DEFAULT_HOST);
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this->sock_fd = DCCP_DEFAULT_SOCK_FD;
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this->closed = DCCP_DEFAULT_CLOSED;
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this->ccid = DCCP_DEFAULT_CCID;
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}
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static gboolean
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gst_dccp_client_sink_stop (GstBaseSink * bsink)
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{
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GstDCCPClientSink *sink;
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sink = GST_DCCP_CLIENT_SINK (bsink);
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if (sink->sock_fd != DCCP_DEFAULT_SOCK_FD && sink->closed) {
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gst_dccp_socket_close (GST_ELEMENT (sink), &(sink->sock_fd));
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}
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return TRUE;
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}
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/*
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* Define the gst class, callbacks, etc.
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*/
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static void
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gst_dccp_client_sink_class_init (GstDCCPClientSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseSinkClass *gstbasesink_class;
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gobject_class = (GObjectClass *) klass;
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gstbasesink_class = (GstBaseSinkClass *) klass;
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gobject_class->set_property = gst_dccp_client_sink_set_property;
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gobject_class->get_property = gst_dccp_client_sink_get_property;
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gobject_class->finalize = gst_dccp_client_sink_finalize;
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
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g_param_spec_int ("port", "Port",
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"The port to send the packets to", 0, G_MAXUINT16,
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DCCP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_HOST,
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g_param_spec_string ("host", "Host",
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"The host IP address to send packets to", DCCP_DEFAULT_HOST,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SOCK_FD,
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g_param_spec_int ("sockfd", "Socket fd",
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"The socket file descriptor", -1, G_MAXINT,
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DCCP_DEFAULT_SOCK_FD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CLOSE_FD,
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g_param_spec_boolean ("close-socket", "Close",
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"Close socket at end of stream",
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DCCP_DEFAULT_CLOSED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CCID,
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g_param_spec_int ("ccid", "CCID",
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"The Congestion Control IDentified to be used", 2, G_MAXINT,
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DCCP_DEFAULT_CCID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/* signals */
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/**
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* GstDccpClientSink::connected:
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* @sink: the gstdccpclientsink element that emitted this signal
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* @fd: the connected socket file descriptor
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*
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* Sign that the element has connected, return the fd of the socket.
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*/
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gst_dccp_client_sink_signals[SIGNAL_CONNECTED] =
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g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstDCCPClientSinkClass, connected), NULL, NULL,
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gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
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gstbasesink_class->start = gst_dccp_client_sink_start;
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gstbasesink_class->stop = gst_dccp_client_sink_stop;
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gstbasesink_class->render = gst_dccp_client_sink_render;
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GST_DEBUG_CATEGORY_INIT (dccpclientsink_debug, "dccpclientsink", 0,
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"DCCP Client Sink");
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}
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