gstreamer/ges/ges-track-image-source.c
2010-08-13 11:50:30 +02:00

132 lines
3.8 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
*
* 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:ges-track-image-source
* @short_description: outputs the video stream from a media file as a still
* image.
*
* Outputs the video stream from a given file as a still frame. The frame
* chosen will be determined by the in-point property on the track object. For
* image files, do not set the in-point property.
*/
#include "ges-internal.h"
#include "ges-track-object.h"
#include "ges-track-image-source.h"
G_DEFINE_TYPE (GESTrackImageSource, ges_track_image_source,
GES_TYPE_TRACK_SOURCE);
enum
{
PROP_0,
PROP_URI
};
static void
ges_track_image_source_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTrackImageSource *tfs = GES_TRACK_IMAGE_SOURCE (object);
switch (property_id) {
case PROP_URI:
g_value_set_string (value, tfs->uri);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_image_source_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTrackImageSource *tfs = GES_TRACK_IMAGE_SOURCE (object);
switch (property_id) {
case PROP_URI:
tfs->uri = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_image_source_dispose (GObject * object)
{
GESTrackImageSource *tfs = GES_TRACK_IMAGE_SOURCE (object);
if (tfs->uri)
g_free (tfs->uri);
G_OBJECT_CLASS (ges_track_image_source_parent_class)->dispose (object);
}
static void
ges_track_image_source_finalize (GObject * object)
{
G_OBJECT_CLASS (ges_track_image_source_parent_class)->finalize (object);
}
static gboolean
ges_track_image_source_create_gnl_object (GESTrackObject * object)
{
object->gnlobject = gst_element_factory_make ("gnlurisource", NULL);
g_object_set (object->gnlobject, "uri", ((GESTrackImageSource *) object)->uri,
NULL);
return TRUE;
}
static void
ges_track_image_source_class_init (GESTrackImageSourceClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTrackObjectClass *track_class = GES_TRACK_OBJECT_CLASS (klass);
object_class->get_property = ges_track_image_source_get_property;
object_class->set_property = ges_track_image_source_set_property;
object_class->dispose = ges_track_image_source_dispose;
object_class->finalize = ges_track_image_source_finalize;
/**
* GESTrackImageSource:uri
*
* The location of the file/resource to use.
*/
g_object_class_install_property (object_class, PROP_URI,
g_param_spec_string ("uri", "URI", "uri of the resource",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
track_class->create_gnl_object = ges_track_image_source_create_gnl_object;
}
static void
ges_track_image_source_init (GESTrackImageSource * self)
{
}
GESTrackImageSource *
ges_track_image_source_new (gchar * uri)
{
return g_object_new (GES_TYPE_TRACK_IMAGE_SOURCE, "uri", uri, NULL);
}