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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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This is needed to satisfy the new -Wunused-but-set-variable added in GCC 4.6: http://gcc.gnu.org/gcc-4.6/changes.html
358 lines
9.8 KiB
C
358 lines
9.8 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
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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-tcpclientsink
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* @see_also: #tcpclientsrc
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* # server:
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* nc -l -p 3000
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* # client:
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* gst-launch fdsrc fd=1 ! tcpclientsink protocol=none port=3000
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* ]| everything you type in the client is shown on the server
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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 <gst/gst-i18n-plugin.h>
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#include <gst/dataprotocol/dataprotocol.h>
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#include "gsttcp.h"
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#include "gsttcpclientsink.h"
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#include <string.h> /* memset */
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/* TCPClientSink signals and args */
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enum
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{
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FRAME_ENCODED,
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/* FILL ME */
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LAST_SIGNAL
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};
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GST_DEBUG_CATEGORY_STATIC (tcpclientsink_debug);
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#define GST_CAT_DEFAULT (tcpclientsink_debug)
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enum
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{
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ARG_0,
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ARG_HOST,
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ARG_PORT
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};
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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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static void gst_tcp_client_sink_finalize (GObject * gobject);
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static gboolean gst_tcp_client_sink_setcaps (GstBaseSink * bsink,
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GstCaps * caps);
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static GstFlowReturn gst_tcp_client_sink_render (GstBaseSink * bsink,
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GstBuffer * buf);
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static GstStateChangeReturn gst_tcp_client_sink_change_state (GstElement *
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element, GstStateChange transition);
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static void gst_tcp_client_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_tcp_client_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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/*static guint gst_tcp_client_sink_signals[LAST_SIGNAL] = { 0 }; */
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#define gst_tcp_client_sink_parent_class parent_class
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G_DEFINE_TYPE (GstTCPClientSink, gst_tcp_client_sink, GST_TYPE_BASE_SINK);
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static void
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gst_tcp_client_sink_class_init (GstTCPClientSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSinkClass *gstbasesink_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesink_class = (GstBaseSinkClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_tcp_client_sink_set_property;
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gobject_class->get_property = gst_tcp_client_sink_get_property;
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gobject_class->finalize = gst_tcp_client_sink_finalize;
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g_object_class_install_property (gobject_class, ARG_HOST,
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g_param_spec_string ("host", "Host", "The host/IP to send the packets to",
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TCP_DEFAULT_HOST, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, ARG_PORT,
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g_param_spec_int ("port", "Port", "The port to send the packets to",
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0, TCP_HIGHEST_PORT, TCP_DEFAULT_PORT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details_simple (gstelement_class,
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"TCP client sink", "Sink/Network",
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"Send data as a client over the network via TCP",
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"Thomas Vander Stichele <thomas at apestaart dot org>");
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gstelement_class->change_state = gst_tcp_client_sink_change_state;
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gstbasesink_class->set_caps = gst_tcp_client_sink_setcaps;
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gstbasesink_class->render = gst_tcp_client_sink_render;
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GST_DEBUG_CATEGORY_INIT (tcpclientsink_debug, "tcpclientsink", 0, "TCP sink");
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}
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static void
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gst_tcp_client_sink_init (GstTCPClientSink * this)
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{
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this->host = g_strdup (TCP_DEFAULT_HOST);
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this->port = TCP_DEFAULT_PORT;
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this->sock_fd.fd = -1;
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GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
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}
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static void
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gst_tcp_client_sink_finalize (GObject * gobject)
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{
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GstTCPClientSink *this = GST_TCP_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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static gboolean
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gst_tcp_client_sink_setcaps (GstBaseSink * bsink, GstCaps * caps)
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{
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return TRUE;
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}
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static GstFlowReturn
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gst_tcp_client_sink_render (GstBaseSink * bsink, GstBuffer * buf)
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{
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size_t wrote = 0;
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GstTCPClientSink *sink;
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guint8 *data;
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gsize size;
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sink = GST_TCP_CLIENT_SINK (bsink);
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g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_TCP_CLIENT_SINK_OPEN),
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GST_FLOW_WRONG_STATE);
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data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
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GST_LOG_OBJECT (sink, "writing %" G_GSIZE_FORMAT " bytes for buffer data",
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size);
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/* write buffer data */
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wrote = gst_tcp_socket_write (sink->sock_fd.fd, data, size);
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gst_buffer_unmap (buf, data, size);
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if (wrote < size)
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goto write_error;
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sink->data_written += wrote;
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return GST_FLOW_OK;
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/* ERRORS */
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write_error:
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{
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GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
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(_("Error while sending data to \"%s:%d\"."), sink->host, sink->port),
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("Only %" G_GSIZE_FORMAT " of %" G_GSIZE_FORMAT " bytes written: %s",
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wrote, size, g_strerror (errno)));
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return GST_FLOW_ERROR;
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}
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}
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static void
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gst_tcp_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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GstTCPClientSink *tcpclientsink;
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g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
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tcpclientsink = GST_TCP_CLIENT_SINK (object);
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switch (prop_id) {
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case ARG_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 (tcpclientsink->host);
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tcpclientsink->host = g_strdup (g_value_get_string (value));
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break;
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case ARG_PORT:
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tcpclientsink->port = 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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static void
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gst_tcp_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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GstTCPClientSink *tcpclientsink;
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g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
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tcpclientsink = GST_TCP_CLIENT_SINK (object);
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switch (prop_id) {
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case ARG_HOST:
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g_value_set_string (value, tcpclientsink->host);
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break;
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case ARG_PORT:
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g_value_set_int (value, tcpclientsink->port);
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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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/* create a socket for sending to remote machine */
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static gboolean
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gst_tcp_client_sink_start (GstTCPClientSink * this)
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{
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int ret;
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gchar *ip;
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if (GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
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return TRUE;
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/* reset caps_sent flag */
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this->caps_sent = FALSE;
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/* create sending client socket */
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GST_DEBUG_OBJECT (this, "opening sending client socket to %s:%d", this->host,
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this->port);
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if ((this->sock_fd.fd = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
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GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE, (NULL), GST_ERROR_SYSTEM);
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return FALSE;
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}
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GST_DEBUG_OBJECT (this, "opened sending client socket with fd %d",
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this->sock_fd.fd);
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/* look up name if we need to */
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ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
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if (!ip) {
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gst_tcp_socket_close (&this->sock_fd);
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return FALSE;
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}
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GST_DEBUG_OBJECT (this, "IP address for host %s is %s", this->host, ip);
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/* connect to server */
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memset (&this->server_sin, 0, sizeof (this->server_sin));
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this->server_sin.sin_family = AF_INET; /* network socket */
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this->server_sin.sin_port = htons (this->port); /* on port */
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this->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */
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g_free (ip);
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GST_DEBUG_OBJECT (this, "connecting to server");
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ret = connect (this->sock_fd.fd, (struct sockaddr *) &this->server_sin,
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sizeof (this->server_sin));
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if (ret) {
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gst_tcp_socket_close (&this->sock_fd);
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switch (errno) {
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case ECONNREFUSED:
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GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE,
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(_("Connection to %s:%d refused."), this->host, this->port),
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(NULL));
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return FALSE;
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break;
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default:
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GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
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("connect to %s:%d failed: %s", this->host, this->port,
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g_strerror (errno)));
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return FALSE;
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break;
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}
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}
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GST_OBJECT_FLAG_SET (this, GST_TCP_CLIENT_SINK_OPEN);
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this->data_written = 0;
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return TRUE;
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}
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static gboolean
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gst_tcp_client_sink_stop (GstTCPClientSink * this)
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{
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if (!GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
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return TRUE;
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gst_tcp_socket_close (&this->sock_fd);
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GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
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return TRUE;
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}
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static GstStateChangeReturn
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gst_tcp_client_sink_change_state (GstElement * element,
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GstStateChange transition)
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{
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GstTCPClientSink *sink;
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GstStateChangeReturn res;
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sink = GST_TCP_CLIENT_SINK (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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if (!gst_tcp_client_sink_start (sink))
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goto start_failure;
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break;
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default:
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break;
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}
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res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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gst_tcp_client_sink_stop (sink);
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default:
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break;
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}
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return res;
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start_failure:
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{
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return GST_STATE_CHANGE_FAILURE;
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}
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}
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