gstreamer/subprojects/gst-examples/playback/player/gtk/gtk-video-renderer.c

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/* GStreamer
*
* Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "gtk-video-renderer.h"
struct _GstPlayGtkVideoRenderer
{
GObject parent;
GstElement *sink;
GtkWidget *widget;
};
struct _GstPlayGtkVideoRendererClass
{
GObjectClass parent_class;
};
static void
gst_player_gtk_video_renderer_interface_init
(GstPlayVideoRendererInterface * iface);
enum
{
GTK_VIDEO_RENDERER_PROP_0,
GTK_VIDEO_RENDERER_PROP_WIDGET,
GTK_VIDEO_RENDERER_PROP_LAST
};
G_DEFINE_TYPE_WITH_CODE (GstPlayGtkVideoRenderer,
gst_player_gtk_video_renderer, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GST_TYPE_PLAY_VIDEO_RENDERER,
gst_player_gtk_video_renderer_interface_init));
static GParamSpec
* gtk_video_renderer_param_specs[GTK_VIDEO_RENDERER_PROP_LAST] = { NULL, };
static void
gst_player_gtk_video_renderer_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (object);
switch (prop_id) {
case GTK_VIDEO_RENDERER_PROP_WIDGET:
g_value_set_object (value, self->widget);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_player_gtk_video_renderer_finalize (GObject * object)
{
GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (object);
if (self->sink)
gst_object_unref (self->sink);
if (self->widget)
g_object_unref (self->widget);
G_OBJECT_CLASS
(gst_player_gtk_video_renderer_parent_class)->finalize (object);
}
static void
gst_player_gtk_video_renderer_class_init
(GstPlayGtkVideoRendererClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gst_player_gtk_video_renderer_get_property;
gobject_class->finalize = gst_player_gtk_video_renderer_finalize;
gtk_video_renderer_param_specs
[GTK_VIDEO_RENDERER_PROP_WIDGET] =
g_param_spec_object ("widget", "Widget",
"Widget to render the video into", GTK_TYPE_WIDGET,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class,
GTK_VIDEO_RENDERER_PROP_LAST, gtk_video_renderer_param_specs);
}
static void
gst_player_gtk_video_renderer_init (GstPlayGtkVideoRenderer * self)
{
GstElement *gtk_sink = gst_element_factory_make ("gtkglsink", NULL);
if (gtk_sink) {
GstElement *sink = gst_element_factory_make ("glsinkbin", NULL);
g_object_set (sink, "sink", gtk_sink, NULL);
self->sink = sink;
} else {
gtk_sink = gst_element_factory_make ("gtksink", NULL);
self->sink = gst_object_ref_sink (gtk_sink);
}
g_assert (self->sink != NULL);
g_object_get (gtk_sink, "widget", &self->widget, NULL);
}
static GstElement *gst_player_gtk_video_renderer_create_video_sink
(GstPlayVideoRenderer * iface, GstPlay * player)
{
GstPlayGtkVideoRenderer *self = GST_PLAY_GTK_VIDEO_RENDERER (iface);
return gst_object_ref (self->sink);
}
static void
gst_player_gtk_video_renderer_interface_init
(GstPlayVideoRendererInterface * iface)
{
iface->create_video_sink = gst_player_gtk_video_renderer_create_video_sink;
}
/**
* gst_play_gtk_video_renderer_new:
*
* Returns: (transfer full):
*/
GstPlayVideoRenderer *
gst_play_gtk_video_renderer_new (void)
{
GstElementFactory *factory;
factory = gst_element_factory_find ("gtkglsink");
if (!factory)
factory = gst_element_factory_find ("gtksink");
if (!factory)
return NULL;
gst_object_unref (factory);
return g_object_new (GST_TYPE_PLAY_GTK_VIDEO_RENDERER, NULL);
}
/**
* gst_play_gtk_video_renderer_get_widget:
* @self: #GstPlayVideoRenderer instance
*
* Returns: (transfer full): The GtkWidget
*/
GtkWidget *gst_play_gtk_video_renderer_get_widget
(GstPlayGtkVideoRenderer * self)
{
GtkWidget *widget;
g_return_val_if_fail (GST_IS_PLAY_GTK_VIDEO_RENDERER (self), NULL);
g_object_get (self, "widget", &widget, NULL);
return widget;
}