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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2006 James Livingston <doclivingston@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The Rhythmbox authors hereby grant permission for non-GPL compatible
* GStreamer plugins to be used and distributed together with GStreamer
* and Rhythmbox. This permission is above and beyond the permissions granted
* by the GPL license by which Rhythmbox is covered. If you modify this code
* you may extend this exception to your version of the code, but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <config.h>
#include "rb-player-gst-filter.h"
#include "rb-marshal.h"
/**
* SECTION:rb-player-gst-filter
* @short_description: player interface for inserting filter elements
* @include: rb-player-gst-filter.h
*
* This interface allows a caller to add filter elements to the GStreamer playback
* pipeline.
*/
enum {
FILTER_INSERTED,
FILTER_PRE_REMOVE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void
rb_player_gst_filter_interface_init (RBPlayerGstFilterIface *iface)
{
/**
* RBPlayerGstFilter::filter-inserted:
* @player: the #RBPlayerGstFilter implementation
* @filter: the element which has been inserted
*
* The 'filter-inserted' signal is emitted when the tee element has been
* inserted into the pipeline and fully linked
**/
signals[FILTER_INSERTED] =
g_signal_new ("filter-inserted",
G_TYPE_FROM_INTERFACE (iface),
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
G_STRUCT_OFFSET (RBPlayerGstFilterIface, filter_inserted),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE,
1, G_TYPE_OBJECT);
/**
* RBPlayerGstFilter::filter-pre-remove:
* @player: the #RBPlayerGstFilter implementation
* @filter: the element which is about to be removed
*
* The 'filter-pre-remove' signal is emitted immediately before the element
* is unlinked and removed from the pipeline
**/
signals[FILTER_PRE_REMOVE] =
g_signal_new ("filter-pre-remove",
G_TYPE_FROM_INTERFACE (iface),
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
G_STRUCT_OFFSET (RBPlayerGstFilterIface, filter_pre_remove),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE,
1, G_TYPE_OBJECT);
}
GType
rb_player_gst_filter_get_type (void)
{
static GType our_type = 0;
if (!our_type) {
static const GTypeInfo our_info = {
sizeof (RBPlayerGstFilterIface),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc)rb_player_gst_filter_interface_init,
NULL, /* class_finalize */
NULL, /* class_data */
0,
0,
NULL
};
our_type = g_type_register_static (G_TYPE_INTERFACE, "RBPlayerGstFilter", &our_info, 0);
}
return our_type;
}
/**
* rb_player_gst_filter_add_filter:
* @player: #RBPlayerGstFilter implementation
* @element: new filter element (or bin) to add
*
* Adds a new filter to the playback pipeline. The filter may not be
* inserted immediately. The 'filter-inserted' signal will be emitted
* when this actually happens.
*
* Return value: TRUE if the filter will be added
*/
gboolean
rb_player_gst_filter_add_filter (RBPlayerGstFilter *player, GstElement *element)
{
RBPlayerGstFilterIface *iface = RB_PLAYER_GST_FILTER_GET_IFACE (player);
return iface->add_filter (player, element);
}
/**
* rb_player_gst_filter_remove_filter:
* @player: #RBPlayerGstFilter implementation
* @element: the filter element (or bin) to remove
*
* Removes a filter from the playback pipeline. The filter may not be
* removed immediately. The 'filter-pre-remove' signal will be emitted
* immediately before this actually happens.
*
* Return value: TRUE if the filter was found and will be removed
*/
gboolean
rb_player_gst_filter_remove_filter (RBPlayerGstFilter *player, GstElement *element)
{
RBPlayerGstFilterIface *iface = RB_PLAYER_GST_FILTER_GET_IFACE (player);
return iface->remove_filter (player, element);
}
void
_rb_player_gst_filter_emit_filter_inserted (RBPlayerGstFilter *player, GstElement *filter)
{
g_signal_emit (player, signals[FILTER_INSERTED], 0, filter);
}
void
_rb_player_gst_filter_emit_filter_pre_remove (RBPlayerGstFilter *player, GstElement *filter)
{
g_signal_emit (player, signals[FILTER_PRE_REMOVE], 0, filter);
}
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