gstreamer/ges/ges-track-filesource.c
Thibault Saunier 4acc711e52 ges: Add a maxduration property to TrackFileSource
API: GESTrackFileSource::maxduration property
2012-01-11 11:56:17 -03:00

161 lines
4.7 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-filesource
* @short_description: outputs a single media stream from a given file
*
* Outputs a single media stream from a given file. The stream chosen depends on
* the type of the track which contains the object.
*/
#include "ges-internal.h"
#include "ges-track-object.h"
#include "ges-track-filesource.h"
G_DEFINE_TYPE (GESTrackFileSource, ges_track_filesource, GES_TYPE_TRACK_SOURCE);
struct _GESTrackFileSourcePrivate
{
guint64 maxduration;
};
enum
{
PROP_0,
PROP_URI,
PROP_MAX_DURATION
};
static void
ges_track_filesource_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTrackFileSource *tfs = GES_TRACK_FILESOURCE (object);
switch (property_id) {
case PROP_URI:
g_value_set_string (value, tfs->uri);
break;
case PROP_MAX_DURATION:
g_value_set_uint64 (value, tfs->priv->maxduration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_filesource_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTrackFileSource *tfs = GES_TRACK_FILESOURCE (object);
switch (property_id) {
case PROP_URI:
tfs->uri = g_value_dup_string (value);
break;
case PROP_MAX_DURATION:
tfs->priv->maxduration = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_filesource_dispose (GObject * object)
{
GESTrackFileSource *tfs = GES_TRACK_FILESOURCE (object);
if (tfs->uri)
g_free (tfs->uri);
G_OBJECT_CLASS (ges_track_filesource_parent_class)->dispose (object);
}
static GstElement *
ges_track_filesource_create_gnl_object (GESTrackObject * object)
{
GstElement *gnlobject;
gnlobject = gst_element_factory_make ("gnlurisource", NULL);
g_object_set (gnlobject, "uri", ((GESTrackFileSource *) object)->uri, NULL);
return gnlobject;
}
static void
ges_track_filesource_class_init (GESTrackFileSourceClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTrackObjectClass *track_class = GES_TRACK_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTrackFileSourcePrivate));
object_class->get_property = ges_track_filesource_get_property;
object_class->set_property = ges_track_filesource_set_property;
object_class->dispose = ges_track_filesource_dispose;
/**
* GESTrackFileSource:max-duration:
*
* The maximum duration (in nanoseconds) of the file.
*
* If not set before adding the object to a layer, it will be discovered
* asynchronously. Connect to 'notify::max-duration' to be notified of it.
*/
g_object_class_install_property (object_class, PROP_MAX_DURATION,
g_param_spec_uint64 ("max-duration", "Maximum duration",
"The duration of the file", 0, G_MAXUINT64, GST_CLOCK_TIME_NONE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
/**
* GESTrackFileSource: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_filesource_create_gnl_object;
}
static void
ges_track_filesource_init (GESTrackFileSource * self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_TRACK_FILESOURCE, GESTrackFileSourcePrivate);
}
/**
* ges_track_filesource_new:
* @uri: the URI the source should control
*
* Creates a new #GESTrackFileSource for the provided @uri.
*
* Returns: The newly created #GESTrackFileSource, or %NULL if there was an
* error.
*/
GESTrackFileSource *
ges_track_filesource_new (gchar * uri)
{
return g_object_new (GES_TYPE_TRACK_FILESOURCE, "uri", uri, NULL);
}