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392 lines
11 KiB
C
392 lines
11 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-dccpserversrc
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* @see_also: dccpclientsink, dccpclientsrc, dccpserversink
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*
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* This element wait for connection from a client and receive data.
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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 "gstdccpserversrc.h"
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#include "gstdccp.h"
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#include <fcntl.h>
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#define DCCP_DEFAULT_CAPS NULL
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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_CLIENT_SOCK_FD,
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PROP_CLOSED,
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PROP_CCID,
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PROP_CAPS
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};
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static gboolean gst_dccp_server_src_stop (GstBaseSrc * bsrc);
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GST_DEBUG_CATEGORY_STATIC (dccpserversrc_debug);
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static const GstElementDetails gst_dccp_server_src_details =
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GST_ELEMENT_DETAILS ("DCCP server source",
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"Source/Network",
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"Receive data as a server 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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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_BOILERPLATE (GstDCCPServerSrc, gst_dccp_server_src, GstPushSrc,
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GST_TYPE_PUSH_SRC);
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static guint gst_dccp_server_src_signals[LAST_SIGNAL] = { 0 };
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/*
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* Read a buffer from the server 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_server_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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{
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GstDCCPServerSrc *src;
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GstFlowReturn ret = GST_FLOW_OK;
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src = GST_DCCP_SERVER_SRC (psrc);
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GST_LOG_OBJECT (src, "reading a buffer");
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ret = gst_dccp_read_buffer (GST_ELEMENT (src), src->client_sock_fd, outbuf);
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if (ret == GST_FLOW_OK) {
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GST_LOG_OBJECT (src,
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"Returning buffer from _get of size %d, ts %"
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GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT
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", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT,
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GST_BUFFER_SIZE (*outbuf),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)),
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GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf));
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if (!gst_caps_is_equal (src->caps, GST_CAPS_ANY)) {
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gst_buffer_set_caps (*outbuf, src->caps);
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}
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}
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return ret;
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}
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/*
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* Set the value of a property for the server src.
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*/
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static void
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gst_dccp_server_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDCCPServerSrc *src = GST_DCCP_SERVER_SRC (object);
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switch (prop_id) {
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case PROP_PORT:
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src->port = g_value_get_int (value);
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break;
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case PROP_CLIENT_SOCK_FD:
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src->client_sock_fd = g_value_get_int (value);
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break;
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case PROP_CLOSED:
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src->closed = g_value_get_boolean (value);
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break;
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case PROP_CCID:
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src->ccid = g_value_get_int (value);
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break;
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case PROP_CAPS:
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{
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const GstCaps *new_caps_val = gst_value_get_caps (value);
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GstCaps *new_caps;
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GstCaps *old_caps;
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if (new_caps_val == NULL) {
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new_caps = gst_caps_new_any ();
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} else {
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new_caps = gst_caps_copy (new_caps_val);
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}
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old_caps = src->caps;
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src->caps = new_caps;
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if (old_caps) {
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gst_caps_unref (old_caps);
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}
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gst_pad_set_caps (GST_BASE_SRC (src)->srcpad, new_caps);
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break;
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}
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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 server src.
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*/
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static void
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gst_dccp_server_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDCCPServerSrc *src = GST_DCCP_SERVER_SRC (object);
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switch (prop_id) {
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case PROP_PORT:
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g_value_set_int (value, src->port);
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break;
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case PROP_CLIENT_SOCK_FD:
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g_value_set_int (value, src->client_sock_fd);
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break;
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case PROP_CLOSED:
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g_value_set_boolean (value, src->closed);
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break;
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case PROP_CAPS:
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gst_value_set_caps (value, src->caps);
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break;
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case PROP_CCID:
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g_value_set_int (value, src->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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/*
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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 server socket and wait for a client connection.
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*
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* @param bsrc - 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_server_src_start (GstBaseSrc * bsrc)
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{
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GstDCCPServerSrc *src = GST_DCCP_SERVER_SRC (bsrc);
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if (src->client_sock_fd == DCCP_DEFAULT_CLIENT_SOCK_FD) {
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/* create socket */
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if ((src->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (src))) < 0) {
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return FALSE;
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}
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if (!gst_dccp_make_address_reusable (GST_ELEMENT (src), src->sock_fd)) {
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return FALSE;
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}
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/* name the server socket */
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memset (&src->server_sin, 0, sizeof (src->server_sin));
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src->server_sin.sin_family = AF_INET; /* network socket */
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src->server_sin.sin_port = htons (src->port); /* on port */
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src->server_sin.sin_addr.s_addr = htonl (INADDR_ANY); /* for hosts */
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if (!gst_dccp_bind_server_socket (GST_ELEMENT (src), src->sock_fd,
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src->server_sin)) {
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return FALSE;
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}
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if (!gst_dccp_set_ccid (GST_ELEMENT (src), src->sock_fd, src->ccid)) {
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return FALSE;
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}
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if (!gst_dccp_listen_server_socket (GST_ELEMENT (src), src->sock_fd)) {
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return FALSE;
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}
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src->client_sock_fd = gst_dccp_server_wait_connections (GST_ELEMENT (src),
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src->sock_fd);
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if (src->client_sock_fd == -1) {
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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 (src, gst_dccp_server_src_signals[SIGNAL_CONNECTED], 0,
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src->client_sock_fd);
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}
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return TRUE;
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}
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static void
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gst_dccp_server_src_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 (&srctemplate));
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gst_element_class_set_details (element_class, &gst_dccp_server_src_details);
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}
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static void
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gst_dccp_server_src_init (GstDCCPServerSrc * this,
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GstDCCPServerSrcClass * g_class)
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{
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this->port = DCCP_DEFAULT_PORT;
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this->sock_fd = DCCP_DEFAULT_SOCK_FD;
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this->client_sock_fd = DCCP_DEFAULT_CLIENT_SOCK_FD;
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this->closed = DCCP_DEFAULT_CLOSED;
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this->ccid = DCCP_DEFAULT_CCID;
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this->caps = DCCP_DEFAULT_CAPS;
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gst_base_src_set_format (GST_BASE_SRC (this), GST_FORMAT_TIME);
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/* Checking if the version of the gstreamer is bigger that 0.10.15 */
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#if ((GST_VERSION_MAJOR > 0) || \
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(GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR > 10) || \
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(GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && GST_VERSION_MICRO >= 15))
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gst_base_src_set_do_timestamp (GST_BASE_SRC (this), TRUE);
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#endif
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/* FIXME is this correct? */
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gst_base_src_set_live (GST_BASE_SRC (this), TRUE);
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}
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static void
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gst_dccp_server_src_finalize (GObject * gobject)
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{
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GstDCCPServerSrc *this = GST_DCCP_SERVER_SRC (gobject);
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if (this->caps) {
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gst_caps_unref (this->caps);
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this->caps = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (gobject);
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}
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static gboolean
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gst_dccp_server_src_stop (GstBaseSrc * bsrc)
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{
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GstDCCPServerSrc *src;
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src = GST_DCCP_SERVER_SRC (bsrc);
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gst_dccp_socket_close (GST_ELEMENT (src), &(src->sock_fd));
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if (src->client_sock_fd != DCCP_DEFAULT_CLIENT_SOCK_FD && src->closed == TRUE) {
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gst_dccp_socket_close (GST_ELEMENT (src), &(src->client_sock_fd));
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}
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return TRUE;
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}
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static void
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gst_dccp_server_src_class_init (GstDCCPServerSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstPushSrcClass *gstpush_src_class;
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gobject_class = (GObjectClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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gstpush_src_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_dccp_server_src_set_property;
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gobject_class->get_property = gst_dccp_server_src_get_property;
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gobject_class->finalize = gst_dccp_server_src_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 listen to", 0, G_MAXUINT16,
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DCCP_DEFAULT_PORT, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_CLIENT_SOCK_FD,
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g_param_spec_int ("sockfd", "Socket fd",
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"The client socket file descriptor", -1, G_MAXINT,
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DCCP_DEFAULT_CLIENT_SOCK_FD, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_CLOSED,
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g_param_spec_boolean ("close-socket", "Close socket",
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"Close client socket at the end of stream", DCCP_DEFAULT_CLOSED,
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G_PARAM_READWRITE));
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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));
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("caps", "Caps",
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"The caps of the source pad", GST_TYPE_CAPS, G_PARAM_READWRITE));
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/* signals */
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/**
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* GstDccpServerSrc::connected:
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* @src: the gstdccpserversrc element that emitted this signal
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* @fd: the connected socket file descriptor
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*
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* Reports that the element has connected, giving the fd of the socket
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*/
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gst_dccp_server_src_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 (GstDCCPServerSrcClass, connected), NULL, NULL,
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gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
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gstbasesrc_class->start = gst_dccp_server_src_start;
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gstbasesrc_class->stop = gst_dccp_server_src_stop;
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gstpush_src_class->create = gst_dccp_server_src_create;
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GST_DEBUG_CATEGORY_INIT (dccpserversrc_debug, "dccpserversrc", 0,
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"DCCP Server Source");
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}
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