--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst/tcp/gsttcpclientsink.c	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,455 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef __SYMBIAN32__
+#include "gst/gst-i18n-plugin.h"
+#else
+#include <gst/gst-i18n-plugin.h>
+#endif
+#include <gst/dataprotocol/dataprotocol.h>
+#include "gsttcp.h"
+#include "gsttcpclientsink.h"
+#include <string.h>             /* memset */
+
+/* elementfactory information */
+static const GstElementDetails gst_tcp_client_sink_details =
+GST_ELEMENT_DETAILS ("TCP client sink",
+    "Sink/Network",
+    "Send data as a client over the network via TCP",
+    "Thomas Vander Stichele <thomas at apestaart dot org>");
+
+/* TCPClientSink signals and args */
+enum
+{
+  FRAME_ENCODED,
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+GST_DEBUG_CATEGORY_STATIC (tcpclientsink_debug);
+#define GST_CAT_DEFAULT (tcpclientsink_debug)
+
+enum
+{
+  ARG_0,
+  ARG_HOST,
+  ARG_PORT,
+  ARG_PROTOCOL
+      /* FILL ME */
+};
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+static void gst_tcp_client_sink_base_init (gpointer g_class);
+static void gst_tcp_client_sink_class_init (GstTCPClientSink * klass);
+static void gst_tcp_client_sink_init (GstTCPClientSink * tcpclientsink);
+static void gst_tcp_client_sink_finalize (GObject * gobject);
+
+static gboolean gst_tcp_client_sink_setcaps (GstBaseSink * bsink,
+    GstCaps * caps);
+static GstFlowReturn gst_tcp_client_sink_render (GstBaseSink * bsink,
+    GstBuffer * buf);
+static GstStateChangeReturn gst_tcp_client_sink_change_state (GstElement *
+    element, GstStateChange transition);
+
+static void gst_tcp_client_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_tcp_client_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+
+static GstElementClass *parent_class = NULL;
+
+/*static guint gst_tcp_client_sink_signals[LAST_SIGNAL] = { 0 }; */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+
+GType
+gst_tcp_client_sink_get_type (void)
+{
+  static GType tcpclientsink_type = 0;
+
+
+  if (!tcpclientsink_type) {
+    static const GTypeInfo tcpclientsink_info = {
+      sizeof (GstTCPClientSinkClass),
+      gst_tcp_client_sink_base_init,
+      NULL,
+      (GClassInitFunc) gst_tcp_client_sink_class_init,
+      NULL,
+      NULL,
+      sizeof (GstTCPClientSink),
+      0,
+      (GInstanceInitFunc) gst_tcp_client_sink_init,
+      NULL
+    };
+
+    tcpclientsink_type =
+        g_type_register_static (GST_TYPE_BASE_SINK, "GstTCPClientSink",
+        &tcpclientsink_info, 0);
+  }
+  return tcpclientsink_type;
+}
+
+static void
+gst_tcp_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_tcp_client_sink_details);
+}
+
+static void
+gst_tcp_client_sink_class_init (GstTCPClientSink * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  gobject_class->set_property = gst_tcp_client_sink_set_property;
+  gobject_class->get_property = gst_tcp_client_sink_get_property;
+  gobject_class->finalize = gst_tcp_client_sink_finalize;
+
+  g_object_class_install_property (gobject_class, ARG_HOST,
+      g_param_spec_string ("host", "Host", "The host/IP to send the packets to",
+          TCP_DEFAULT_HOST, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_PORT,
+      g_param_spec_int ("port", "Port", "The port to send the packets to",
+          0, TCP_HIGHEST_PORT, TCP_DEFAULT_PORT, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_PROTOCOL,
+      g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in",
+          GST_TYPE_TCP_PROTOCOL, GST_TCP_PROTOCOL_NONE, G_PARAM_READWRITE));
+
+  gstelement_class->change_state = gst_tcp_client_sink_change_state;
+
+  gstbasesink_class->set_caps = gst_tcp_client_sink_setcaps;
+  gstbasesink_class->render = gst_tcp_client_sink_render;
+
+  GST_DEBUG_CATEGORY_INIT (tcpclientsink_debug, "tcpclientsink", 0, "TCP sink");
+}
+
+static void
+gst_tcp_client_sink_init (GstTCPClientSink * this)
+{
+  this->host = g_strdup (TCP_DEFAULT_HOST);
+  this->port = TCP_DEFAULT_PORT;
+
+  this->sock_fd.fd = -1;
+  this->protocol = GST_TCP_PROTOCOL_NONE;
+  GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
+}
+
+static void
+gst_tcp_client_sink_finalize (GObject * gobject)
+{
+  GstTCPClientSink *this = GST_TCP_CLIENT_SINK (gobject);
+
+  g_free (this->host);
+
+  G_OBJECT_CLASS (parent_class)->finalize (gobject);
+}
+
+static gboolean
+gst_tcp_client_sink_setcaps (GstBaseSink * bsink, GstCaps * caps)
+{
+  GstTCPClientSink *sink;
+
+  sink = GST_TCP_CLIENT_SINK (bsink);
+
+  /* write the buffer header if we have one */
+  switch (sink->protocol) {
+    case GST_TCP_PROTOCOL_NONE:
+      break;
+
+    case GST_TCP_PROTOCOL_GDP:
+      /* if we haven't send caps yet, send them first */
+      if (!sink->caps_sent) {
+        const GstCaps *caps;
+        gchar *string;
+
+        caps = GST_PAD_CAPS (GST_PAD_PEER (GST_BASE_SINK_PAD (bsink)));
+        string = gst_caps_to_string (caps);
+        GST_DEBUG_OBJECT (sink, "Sending caps %s through GDP", string);
+        g_free (string);
+
+        if (!gst_tcp_gdp_write_caps (GST_ELEMENT (sink), sink->sock_fd.fd,
+                caps, TRUE, sink->host, sink->port))
+          goto gdp_write_error;
+
+        sink->caps_sent = TRUE;
+      }
+      break;
+    default:
+      g_warning ("Unhandled protocol type");
+      break;
+  }
+
+  return TRUE;
+
+  /* ERRORS */
+gdp_write_error:
+  {
+    return FALSE;
+  }
+}
+
+static GstFlowReturn
+gst_tcp_client_sink_render (GstBaseSink * bsink, GstBuffer * buf)
+{
+  size_t wrote = 0;
+  GstTCPClientSink *sink;
+  gint size;
+
+  sink = GST_TCP_CLIENT_SINK (bsink);
+
+  g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_TCP_CLIENT_SINK_OPEN),
+      GST_FLOW_WRONG_STATE);
+
+  size = GST_BUFFER_SIZE (buf);
+
+  GST_LOG_OBJECT (sink, "writing %d bytes for buffer data", size);
+
+  /* write the buffer header if we have one */
+  switch (sink->protocol) {
+    case GST_TCP_PROTOCOL_NONE:
+      break;
+    case GST_TCP_PROTOCOL_GDP:
+      GST_LOG_OBJECT (sink, "Sending buffer header through GDP");
+      if (!gst_tcp_gdp_write_buffer (GST_ELEMENT (sink), sink->sock_fd.fd, buf,
+              TRUE, sink->host, sink->port))
+        goto gdp_write_error;
+      break;
+    default:
+      break;
+  }
+
+  /* write buffer data */
+  wrote = gst_tcp_socket_write (sink->sock_fd.fd, GST_BUFFER_DATA (buf), size);
+
+  if (wrote < size)
+    goto write_error;
+
+  sink->data_written += wrote;
+
+  return GST_FLOW_OK;
+
+  /* ERRORS */
+gdp_write_error:
+  {
+    return FALSE;
+  }
+write_error:
+  {
+    GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
+        (_("Error while sending data to \"%s:%d\"."), sink->host, sink->port),
+        ("Only %" G_GSIZE_FORMAT " of %u bytes written: %s",
+            wrote, GST_BUFFER_SIZE (buf), g_strerror (errno)));
+    return GST_FLOW_ERROR;
+  }
+}
+
+static void
+gst_tcp_client_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstTCPClientSink *tcpclientsink;
+
+  g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
+  tcpclientsink = GST_TCP_CLIENT_SINK (object);
+
+  switch (prop_id) {
+    case ARG_HOST:
+      if (!g_value_get_string (value)) {
+        g_warning ("host property cannot be NULL");
+        break;
+      }
+      g_free (tcpclientsink->host);
+      tcpclientsink->host = g_strdup (g_value_get_string (value));
+      break;
+    case ARG_PORT:
+      tcpclientsink->port = g_value_get_int (value);
+      break;
+    case ARG_PROTOCOL:
+      tcpclientsink->protocol = g_value_get_enum (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_tcp_client_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstTCPClientSink *tcpclientsink;
+
+  g_return_if_fail (GST_IS_TCP_CLIENT_SINK (object));
+  tcpclientsink = GST_TCP_CLIENT_SINK (object);
+
+  switch (prop_id) {
+    case ARG_HOST:
+      g_value_set_string (value, tcpclientsink->host);
+      break;
+    case ARG_PORT:
+      g_value_set_int (value, tcpclientsink->port);
+      break;
+    case ARG_PROTOCOL:
+      g_value_set_enum (value, tcpclientsink->protocol);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+
+/* create a socket for sending to remote machine */
+static gboolean
+gst_tcp_client_sink_start (GstTCPClientSink * this)
+{
+  int ret;
+  gchar *ip;
+
+  if (GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
+    return TRUE;
+
+  /* reset caps_sent flag */
+  this->caps_sent = FALSE;
+
+  /* create sending client socket */
+  GST_DEBUG_OBJECT (this, "opening sending client socket to %s:%d", this->host,
+      this->port);
+  if ((this->sock_fd.fd = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
+    GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE, (NULL), GST_ERROR_SYSTEM);
+    return FALSE;
+  }
+  GST_DEBUG_OBJECT (this, "opened sending client socket with fd %d",
+      this->sock_fd.fd);
+
+  /* look up name if we need to */
+  ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
+  if (!ip) {
+    gst_tcp_socket_close (&this->sock_fd);
+    return FALSE;
+  }
+  GST_DEBUG_OBJECT (this, "IP address for host %s is %s", this->host, ip);
+
+  /* connect to server */
+  memset (&this->server_sin, 0, sizeof (this->server_sin));
+  this->server_sin.sin_family = AF_INET;        /* network socket */
+  this->server_sin.sin_port = htons (this->port);       /* on port */
+  this->server_sin.sin_addr.s_addr = inet_addr (ip);    /* on host ip */
+  g_free (ip);
+
+  GST_DEBUG_OBJECT (this, "connecting to server");
+  ret = connect (this->sock_fd.fd, (struct sockaddr *) &this->server_sin,
+      sizeof (this->server_sin));
+
+  if (ret) {
+    gst_tcp_socket_close (&this->sock_fd);
+    switch (errno) {
+      case ECONNREFUSED:
+        GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE,
+            (_("Connection to %s:%d refused."), this->host, this->port),
+            (NULL));
+        return FALSE;
+        break;
+      default:
+        GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
+            ("connect to %s:%d failed: %s", this->host, this->port,
+                g_strerror (errno)));
+        return FALSE;
+        break;
+    }
+  }
+
+  GST_OBJECT_FLAG_SET (this, GST_TCP_CLIENT_SINK_OPEN);
+
+  this->data_written = 0;
+
+  return TRUE;
+}
+
+static gboolean
+gst_tcp_client_sink_stop (GstTCPClientSink * this)
+{
+  if (!GST_OBJECT_FLAG_IS_SET (this, GST_TCP_CLIENT_SINK_OPEN))
+    return TRUE;
+
+  gst_tcp_socket_close (&this->sock_fd);
+
+  GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SINK_OPEN);
+
+  return TRUE;
+}
+
+static GstStateChangeReturn
+gst_tcp_client_sink_change_state (GstElement * element,
+    GstStateChange transition)
+{
+  GstTCPClientSink *sink;
+  GstStateChangeReturn res;
+
+  sink = GST_TCP_CLIENT_SINK (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      if (!gst_tcp_client_sink_start (GST_TCP_CLIENT_SINK (element)))
+        goto start_failure;
+      break;
+    default:
+      break;
+  }
+  res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      gst_tcp_client_sink_stop (GST_TCP_CLIENT_SINK (element));
+    default:
+      break;
+  }
+  return res;
+
+start_failure:
+  {
+    return GST_STATE_CHANGE_FAILURE;
+  }
+}