/* 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;

  }

}