/* GStreamer

 * Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>

 *

 * gstdeviceprovider.c: Device probing and monitoring

 *

 * 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.

 */

/**

 * SECTION:gstdeviceprovider

 * @title: GstDeviceProvider

 * @short_description: A device provider

 * @see_also: #GstDevice, #GstDeviceMonitor

 *

 * A #GstDeviceProvider subclass is provided by a plugin that handles devices

 * if there is a way to programatically list connected devices. It can also

 * optionally provide updates to the list of connected devices.

 *

 * Each #GstDeviceProvider subclass is a singleton, a plugin should

 * normally provide a single subclass for all devices.

 *

 * Applications would normally use a #GstDeviceMonitor to monitor devices

 * from all relevant providers.

 *

 * Since: 1.4

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include "gst_private.h"

#include "gstdeviceprovider.h"

#include "gstelementmetadata.h"

#include "gstquark.h"

struct _GstDeviceProviderPrivate

{

  GstBus *bus;

  GMutex start_lock;

  gboolean started_count;

  GList *hidden_providers;

};

enum

{

  PROVIDER_HIDDEN,

  PROVIDER_UNHIDDEN,

  LAST_SIGNAL

};

static guint gst_device_provider_signals[LAST_SIGNAL] = { 0 };

/* this is used in gstelementfactory.c:gst_element_register() */

GQuark __gst_deviceproviderclass_factory = 0;

static void gst_device_provider_class_init (GstDeviceProviderClass * klass);

static void gst_device_provider_init (GstDeviceProvider * element);

static void gst_device_provider_base_class_init (gpointer g_class);

static void gst_device_provider_dispose (GObject * object);

static void gst_device_provider_finalize (GObject * object);

static gpointer gst_device_provider_parent_class = NULL;

GType

gst_device_provider_get_type (void)

{

  static volatile gsize gst_device_provider_type = 0;

  if (g_once_init_enter (&gst_device_provider_type)) {

    GType _type;

    static const GTypeInfo element_info = {

      sizeof (GstDeviceProviderClass),

      gst_device_provider_base_class_init,

      NULL,                     /* base_class_finalize */

      (GClassInitFunc) gst_device_provider_class_init,

      NULL,

      NULL,

      sizeof (GstDeviceProvider),

      0,

      (GInstanceInitFunc) gst_device_provider_init,

      NULL

    };

    _type = g_type_register_static (GST_TYPE_OBJECT, "GstDeviceProvider",

        &element_info, G_TYPE_FLAG_ABSTRACT);

    __gst_deviceproviderclass_factory =

        g_quark_from_static_string ("GST_DEVICEPROVIDERCLASS_FACTORY");

    g_once_init_leave (&gst_device_provider_type, _type);

  }

  return gst_device_provider_type;

}

static void

gst_device_provider_base_class_init (gpointer g_class)

{

  GstDeviceProviderClass *klass = GST_DEVICE_PROVIDER_CLASS (g_class);

  /* Copy the element details here so elements can inherit the

   * details from their base class and classes only need to set

   * the details in class_init instead of base_init */

  klass->metadata =

      klass->metadata ? gst_structure_copy (klass->metadata) :

      gst_structure_new_empty ("metadata");

  klass->factory = g_type_get_qdata (G_TYPE_FROM_CLASS (klass),

      __gst_deviceproviderclass_factory);

}

static void

gst_device_provider_class_init (GstDeviceProviderClass * klass)

{

  GObjectClass *gobject_class = (GObjectClass *) klass;

  gst_device_provider_parent_class = g_type_class_peek_parent (klass);

  g_type_class_add_private (klass, sizeof (GstDeviceProviderPrivate));

  gobject_class->dispose = gst_device_provider_dispose;

  gobject_class->finalize = gst_device_provider_finalize;

  gst_device_provider_signals[PROVIDER_HIDDEN] =

      g_signal_new ("provider-hidden", G_TYPE_FROM_CLASS (klass),

      G_SIGNAL_RUN_FIRST, 0, NULL,

      NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, G_TYPE_STRING);

  gst_device_provider_signals[PROVIDER_UNHIDDEN] =

      g_signal_new ("provider-unhidden", G_TYPE_FROM_CLASS (klass),

      G_SIGNAL_RUN_FIRST, 0, NULL,

      NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, G_TYPE_STRING);

}

static void

gst_device_provider_init (GstDeviceProvider * provider)

{

  provider->priv = G_TYPE_INSTANCE_GET_PRIVATE (provider,

      GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderPrivate);

  g_mutex_init (&provider->priv->start_lock);

  provider->priv->bus = gst_bus_new ();

  gst_bus_set_flushing (provider->priv->bus, TRUE);

}

static void

gst_device_provider_dispose (GObject * object)

{

  GstDeviceProvider *provider = GST_DEVICE_PROVIDER (object);

  gst_object_replace ((GstObject **) & provider->priv->bus, NULL);

  GST_OBJECT_LOCK (provider);

  g_list_free_full (provider->devices, (GDestroyNotify) gst_object_unparent);

  provider->devices = NULL;

  GST_OBJECT_UNLOCK (provider);

  G_OBJECT_CLASS (gst_device_provider_parent_class)->dispose (object);

}

static void

gst_device_provider_finalize (GObject * object)

{

  GstDeviceProvider *provider = GST_DEVICE_PROVIDER (object);

  g_mutex_clear (&provider->priv->start_lock);

  G_OBJECT_CLASS (gst_device_provider_parent_class)->finalize (object);

}

/**

 * gst_device_provider_class_add_metadata:

 * @klass: class to set metadata for

 * @key: the key to set

 * @value: the value to set

 *

 * Set @key with @value as metadata in @klass.

 *

 * Since: 1.4

 */

void

gst_device_provider_class_add_metadata (GstDeviceProviderClass * klass,

    const gchar * key, const gchar * value)

{

  g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));

  g_return_if_fail (key != NULL);

  g_return_if_fail (value != NULL);

  gst_structure_set ((GstStructure *) klass->metadata,

      key, G_TYPE_STRING, value, NULL);

}

/**

 * gst_device_provider_class_add_static_metadata:

 * @klass: class to set metadata for

 * @key: the key to set

 * @value: (transfer full): the value to set

 *

 * Set @key with @value as metadata in @klass.

 *

 * Same as gst_device_provider_class_add_metadata(), but @value must be a static string

 * or an inlined string, as it will not be copied. (GStreamer plugins will

 * be made resident once loaded, so this function can be used even from

 * dynamically loaded plugins.)

 *

 * Since: 1.4

 */

void

gst_device_provider_class_add_static_metadata (GstDeviceProviderClass * klass,

    const gchar * key, const gchar * value)

{

  GValue val = G_VALUE_INIT;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));

  g_return_if_fail (key != NULL);

  g_return_if_fail (value != NULL);

  g_value_init (&val, G_TYPE_STRING);

  g_value_set_static_string (&val, value);

  gst_structure_take_value ((GstStructure *) klass->metadata, key, &val;;

}

/**

 * gst_device_provider_class_set_metadata:

 * @klass: class to set metadata for

 * @longname: The long English name of the device provider. E.g. "File Sink"

 * @classification: String describing the type of device provider, as an

 *  unordered list separated with slashes ('/'). See draft-klass.txt of the

 *  design docs

 * for more details and common types. E.g: "Sink/File"

 * @description: Sentence describing the purpose of the device provider.

 * E.g: "Write stream to a file"

 * @author: Name and contact details of the author(s). Use \n to separate

 * multiple author metadata. E.g: "Joe Bloggs <joe.blogs at foo.com>"

 *

 * Sets the detailed information for a #GstDeviceProviderClass.

 *

 * > This function is for use in _class_init functions only.

 *

 * Since: 1.4

 */

void

gst_device_provider_class_set_metadata (GstDeviceProviderClass * klass,

    const gchar * longname, const gchar * classification,

    const gchar * description, const gchar * author)

{

  g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));

  g_return_if_fail (longname != NULL && *longname != '\0');

  g_return_if_fail (classification != NULL && *classification != '\0');

  g_return_if_fail (description != NULL && *description != '\0');

  g_return_if_fail (author != NULL && *author != '\0');

  gst_structure_id_set ((GstStructure *) klass->metadata,

      GST_QUARK (ELEMENT_METADATA_LONGNAME), G_TYPE_STRING, longname,

      GST_QUARK (ELEMENT_METADATA_KLASS), G_TYPE_STRING, classification,

      GST_QUARK (ELEMENT_METADATA_DESCRIPTION), G_TYPE_STRING, description,

      GST_QUARK (ELEMENT_METADATA_AUTHOR), G_TYPE_STRING, author, NULL);

}

/**

 * gst_device_provider_class_set_static_metadata:

 * @klass: class to set metadata for

 * @longname: (transfer full): The long English name of the element. E.g. "File Sink"

 * @classification: (transfer full): String describing the type of element, as

 * an unordered list separated with slashes ('/'). See draft-klass.txt of the

 * design docs for more details and common types. E.g: "Sink/File"

 * @description: (transfer full): Sentence describing the purpose of the

 * element.  E.g: "Write stream to a file"

 * @author: (transfer full): Name and contact details of the author(s). Use \n

 * to separate multiple author metadata. E.g: "Joe Bloggs <joe.blogs at

 * foo.com>"

 *

 * Sets the detailed information for a #GstDeviceProviderClass.

 *

 * > This function is for use in _class_init functions only.

 *

 * Same as gst_device_provider_class_set_metadata(), but @longname, @classification,

 * @description, and @author must be static strings or inlined strings, as

 * they will not be copied. (GStreamer plugins will be made resident once

 * loaded, so this function can be used even from dynamically loaded plugins.)

 *

 * Since: 1.4

 */

void

gst_device_provider_class_set_static_metadata (GstDeviceProviderClass * klass,

    const gchar * longname, const gchar * classification,

    const gchar * description, const gchar * author)

{

  GstStructure *s = (GstStructure *) klass->metadata;

  GValue val = G_VALUE_INIT;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));

  g_return_if_fail (longname != NULL && *longname != '\0');

  g_return_if_fail (classification != NULL && *classification != '\0');

  g_return_if_fail (description != NULL && *description != '\0');

  g_return_if_fail (author != NULL && *author != '\0');

  g_value_init (&val, G_TYPE_STRING);

  g_value_set_static_string (&val, longname);

  gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_LONGNAME), &val;;

  g_value_set_static_string (&val, classification);

  gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_KLASS), &val;;

  g_value_set_static_string (&val, description);

  gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_DESCRIPTION),

      &val;;

  g_value_set_static_string (&val, author);

  gst_structure_id_take_value (s, GST_QUARK (ELEMENT_METADATA_AUTHOR), &val;;

}

/**

 * gst_device_provider_class_get_metadata:

 * @klass: class to get metadata for

 * @key: the key to get

 *

 * Get metadata with @key in @klass.

 *

 * Returns: (nullable): the metadata for @key.

 *

 * Since: 1.4

 */

const gchar *

gst_device_provider_class_get_metadata (GstDeviceProviderClass * klass,

    const gchar * key)

{

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass), NULL);

  g_return_val_if_fail (key != NULL, NULL);

  return gst_structure_get_string ((GstStructure *) klass->metadata, key);

}

/**

 * gst_device_provider_get_metadata:

 * @provider: provider to get metadata for

 * @key: the key to get

 *

 * Get metadata with @key in @provider.

 *

 * Returns: the metadata for @key.

 *

 * Since: 1.14

 */

const gchar *

gst_device_provider_get_metadata (GstDeviceProvider * provider,

    const gchar * key)

{

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);

  g_return_val_if_fail (key != NULL, NULL);

  return

      gst_device_provider_class_get_metadata (GST_DEVICE_PROVIDER_GET_CLASS

      (provider), key);

}

/**

 * gst_device_provider_get_devices:

 * @provider: A #GstDeviceProvider

 *

 * Gets a list of devices that this provider understands. This may actually

 * probe the hardware if the provider is not currently started.

 *

 * Returns: (transfer full) (element-type GstDevice): a #GList of

 *   #GstDevice

 *

 * Since: 1.4

 */

GList *

gst_device_provider_get_devices (GstDeviceProvider * provider)

{

  GstDeviceProviderClass *klass;

  GList *devices = NULL;

  gboolean started;

  GList *item;

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);

  klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);

  g_mutex_lock (&provider->priv->start_lock);

  started = (provider->priv->started_count > 0);

  if (started) {

    GST_OBJECT_LOCK (provider);

    for (item = provider->devices; item; item = item->next)

      devices = g_list_prepend (devices, gst_object_ref (item->data));

    GST_OBJECT_UNLOCK (provider);

  } else if (klass->probe)

    devices = klass->probe (provider);

  g_mutex_unlock (&provider->priv->start_lock);

  return devices;

}

/**

 * gst_device_provider_start:

 * @provider: A #GstDeviceProvider

 *

 * Starts providering the devices. This will cause #GST_MESSAGE_DEVICE_ADDED

 * and #GST_MESSAGE_DEVICE_REMOVED messages to be posted on the provider's bus

 * when devices are added or removed from the system.

 *

 * Since the #GstDeviceProvider is a singleton,

 * gst_device_provider_start() may already have been called by another

 * user of the object, gst_device_provider_stop() needs to be called the same

 * number of times.

 *

 * Returns: %TRUE if the device providering could be started

 *

 * Since: 1.4

 */

gboolean

gst_device_provider_start (GstDeviceProvider * provider)

{

  GstDeviceProviderClass *klass;

  gboolean ret = FALSE;

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), FALSE);

  klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);

  g_mutex_lock (&provider->priv->start_lock);

  if (provider->priv->started_count > 0) {

    ret = TRUE;

    goto started;

  }

  if (klass->start)

    ret = klass->start (provider);

  if (ret) {

    provider->priv->started_count++;

    gst_bus_set_flushing (provider->priv->bus, FALSE);

  }

started:

  g_mutex_unlock (&provider->priv->start_lock);

  return ret;

}

/**

 * gst_device_provider_stop:

 * @provider: A #GstDeviceProvider

 *

 * Decreases the use-count by one. If the use count reaches zero, this

 * #GstDeviceProvider will stop providering the devices. This needs to be

 * called the same number of times that gst_device_provider_start() was called.

 *

 * Since: 1.4

 */

void

gst_device_provider_stop (GstDeviceProvider * provider)

{

  GstDeviceProviderClass *klass;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));

  klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);

  g_mutex_lock (&provider->priv->start_lock);

  if (provider->priv->started_count == 1) {

    gst_bus_set_flushing (provider->priv->bus, TRUE);

    if (klass->stop)

      klass->stop (provider);

    GST_OBJECT_LOCK (provider);

    g_list_free_full (provider->devices, (GDestroyNotify) gst_object_unparent);

    provider->devices = NULL;

    GST_OBJECT_UNLOCK (provider);

  } else if (provider->priv->started_count < 1) {

    g_critical

        ("Trying to stop a GstDeviceProvider %s which is already stopped",

        GST_OBJECT_NAME (provider));

  }

  provider->priv->started_count--;

  g_mutex_unlock (&provider->priv->start_lock);

}

/**

 * gst_device_provider_get_factory:

 * @provider: a #GstDeviceProvider to request the device provider factory of.

 *

 * Retrieves the factory that was used to create this device provider.

 *

 * Returns: (transfer none): the #GstDeviceProviderFactory used for

 *     creating this device provider. no refcounting is needed.

 *

 * Since: 1.4

 */

GstDeviceProviderFactory *

gst_device_provider_get_factory (GstDeviceProvider * provider)

{

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);

  return GST_DEVICE_PROVIDER_GET_CLASS (provider)->factory;

}

/**

 * gst_device_provider_can_provider:

 * @provider: a #GstDeviceProvider

 *

 * If this function returns %TRUE, then the device provider can provider if

 * devices are added or removed. Otherwise, it can only do static probing.

 *

 * Returns: %TRUE if the #GstDeviceProvider support providering, %FALSE otherwise

 */

gboolean

gst_device_provider_can_monitor (GstDeviceProvider * provider)

{

  GstDeviceProviderClass *klass;

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), FALSE);

  klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);

  if (klass->start)

    return TRUE;

  else

    return FALSE;

}

/**

 * gst_device_provider_get_bus:

 * @provider: a #GstDeviceProvider

 *

 * Gets the #GstBus of this #GstDeviceProvider

 *

 * Returns: (transfer full): a #GstBus

 *

 * Since: 1.4

 */

GstBus *

gst_device_provider_get_bus (GstDeviceProvider * provider)

{

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);

  return gst_object_ref (provider->priv->bus);

}

/**

 * gst_device_provider_device_add:

 * @provider: a #GstDeviceProvider

 * @device: (transfer floating): a #GstDevice that has been added

 *

 * Posts a message on the provider's #GstBus to inform applications that

 * a new device has been added.

 *

 * This is for use by subclasses.

 *

 * @device's reference count will be incremented, and any floating reference

 * will be removed (see gst_object_ref_sink()).

 *

 * Since: 1.4

 */

void

gst_device_provider_device_add (GstDeviceProvider * provider,

    GstDevice * device)

{

  GstMessage *message;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));

  g_return_if_fail (GST_IS_DEVICE (device));

  if (!gst_object_set_parent (GST_OBJECT (device), GST_OBJECT (provider))) {

    GST_WARNING_OBJECT (provider, "Could not parent device %p to provider,"

        " it already has a parent", device);

    return;

  }

  GST_OBJECT_LOCK (provider);

  /* Take an additional reference so we can be sure nobody removed it from the

   * provider in the meantime and we can safely emit the message */

  gst_object_ref (device);

  provider->devices = g_list_prepend (provider->devices, device);

  GST_OBJECT_UNLOCK (provider);

  message = gst_message_new_device_added (GST_OBJECT (provider), device);

  gst_bus_post (provider->priv->bus, message);

  gst_object_unref (device);

}

/**

 * gst_device_provider_device_remove:

 * @provider: a #GstDeviceProvider

 * @device: a #GstDevice that has been removed

 *

 * Posts a message on the provider's #GstBus to inform applications that

 * a device has been removed.

 *

 * This is for use by subclasses.

 *

 * Since: 1.4

 */

void

gst_device_provider_device_remove (GstDeviceProvider * provider,

    GstDevice * device)

{

  GstMessage *message;

  GList *item;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));

  g_return_if_fail (GST_IS_DEVICE (device));

  GST_OBJECT_LOCK (provider);

  item = g_list_find (provider->devices, device);

  if (item) {

    provider->devices = g_list_delete_link (provider->devices, item);

  }

  GST_OBJECT_UNLOCK (provider);

  message = gst_message_new_device_removed (GST_OBJECT (provider), device);

  g_signal_emit_by_name (device, "removed");

  gst_bus_post (provider->priv->bus, message);

  if (item)

    gst_object_unparent (GST_OBJECT (device));

}

/**

 * gst_device_provider_get_hidden_providers:

 * @provider: a #GstDeviceProvider

 *

 * Get the provider factory names of the #GstDeviceProvider instances that

 * are hidden by @provider.

 *

 * Returns: (transfer full) (array zero-terminated=1) (element-type gchar*):

 *   a list of hidden providers factory names or %NULL when

 *   nothing is hidden by @provider. Free with g_strfreev.

 *

 * Since: 1.6

 */

gchar **

gst_device_provider_get_hidden_providers (GstDeviceProvider * provider)

{

  GList *walk;

  guint i, len;

  gchar **res = NULL;

  g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);

  GST_OBJECT_LOCK (provider);

  len = g_list_length (provider->priv->hidden_providers);

  if (len == 0)

    goto done;

  res = g_new (gchar *, len + 1);

  for (i = 0, walk = provider->priv->hidden_providers; walk;

      walk = g_list_next (walk), i++)

    res[i] = g_strdup (walk->data);

  res[i] = NULL;

done:

  GST_OBJECT_UNLOCK (provider);

  return res;

}

/**

 * gst_device_provider_hide_provider:

 * @provider: a #GstDeviceProvider

 * @name: a provider factory name

 *

 * Make @provider hide the devices from the factory with @name.

 *

 * This function is used when @provider will also provide the devices reported

 * by provider factory @name. A monitor should stop monitoring the

 * device provider with @name to avoid duplicate devices.

 *

 * Since: 1.6

 */

void

gst_device_provider_hide_provider (GstDeviceProvider * provider,

    const gchar * name)

{

  GList *find;

  const gchar *hidden_name = NULL;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));

  g_return_if_fail (name != NULL);

  GST_OBJECT_LOCK (provider);

  find =

      g_list_find_custom (provider->priv->hidden_providers, name,

      (GCompareFunc) g_strcmp0);

  if (find == NULL) {

    hidden_name = name;

    provider->priv->hidden_providers =

        g_list_prepend (provider->priv->hidden_providers, g_strdup (name));

  }

  GST_OBJECT_UNLOCK (provider);

  if (hidden_name)

    g_signal_emit (provider, gst_device_provider_signals[PROVIDER_HIDDEN],

        0, hidden_name);

}

/**

 * gst_device_provider_unhide_provider:

 * @provider: a #GstDeviceProvider

 * @name: a provider factory name

 *

 * Make @provider unhide the devices from factory @name.

 *

 * This function is used when @provider will no longer provide the devices

 * reported by provider factory @name. A monitor should start

 * monitoring the devices from provider factory @name in order to see

 * all devices again.

 *

 * Since: 1.6

 */

void

gst_device_provider_unhide_provider (GstDeviceProvider * provider,

    const gchar * name)

{

  GList *find;

  gchar *unhidden_name = NULL;

  g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));

  g_return_if_fail (name != NULL);

  GST_OBJECT_LOCK (provider);

  find =

      g_list_find_custom (provider->priv->hidden_providers, name,

      (GCompareFunc) g_strcmp0);

  if (find) {

    unhidden_name = find->data;

    provider->priv->hidden_providers =

        g_list_delete_link (provider->priv->hidden_providers, find);

  }

  GST_OBJECT_UNLOCK (provider);

  if (unhidden_name) {

    g_signal_emit (provider,

        gst_device_provider_signals[PROVIDER_UNHIDDEN], 0, unhidden_name);

    g_free (unhidden_name);

  }

}