gstreamer/ges/ges-asset-timeline-object.c

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/* Gstreamer Editing Services
*
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION: ges-asset-timeline-object
* @short_description: A GESAsset subclass specialized in GESTimelineObject extraction
*
* The #GESAssetFileSource is a special #GESAsset specilized in #GESTimelineObject.
* it is mostly used to get information about the #GESTrackType-s the objects extracted
* from it can potentialy create #GESTrackObject for.
*/
#include "ges-asset-timeline-object.h"
G_DEFINE_TYPE (GESAssetTimelineObject, ges_asset_timeline_object,
GES_TYPE_ASSET);
#define GES_ASSET_TIMELINE_OBJECT_GET_PRIVATE(o)\
(G_TYPE_INSTANCE_GET_PRIVATE ((o), GES_TYPE_ASSET_TIMELINE_OBJECT, \
GESAssetTimelineObjectPrivate))
#define parent_class ges_asset_timeline_object_parent_class
struct _GESAssetTimelineObjectPrivate
{
GESTrackType supportedformats;
};
enum
{
PROP_0,
PROP_SUPPORTED_FORMATS,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
/***********************************************
* *
* GObject vmetods implemenation *
* *
***********************************************/
static void
_dispose (GObject * object)
{
}
static void
_finalize (GObject * object)
{
}
static void
_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESAssetTimelineObjectPrivate *priv =
GES_ASSET_TIMELINE_OBJECT (object)->priv;
switch (property_id) {
case PROP_SUPPORTED_FORMATS:
g_value_set_flags (value, priv->supportedformats);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESAssetTimelineObjectPrivate *priv =
GES_ASSET_TIMELINE_OBJECT (object)->priv;
switch (property_id) {
case PROP_SUPPORTED_FORMATS:
priv->supportedformats = g_value_get_flags (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_asset_timeline_object_init (GESAssetTimelineObject * self)
{
self->priv = GES_ASSET_TIMELINE_OBJECT_GET_PRIVATE (self);
}
static void
_constructed (GObject * object)
{
GType extractable_type = ges_asset_get_extractable_type (GES_ASSET (object));
GObjectClass *class = g_type_class_ref (extractable_type);
GParamSpecFlags *pspec;
pspec = G_PARAM_SPEC_FLAGS (g_object_class_find_property (class,
"supported-formats"));
GES_ASSET_TIMELINE_OBJECT (object)->priv->supportedformats =
pspec->default_value;
g_type_class_unref (class);
G_OBJECT_CLASS (parent_class)->constructed (object);
}
static void
ges_asset_timeline_object_class_init (GESAssetTimelineObjectClass * self_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (self_class);
g_type_class_add_private (self_class, sizeof (GESAssetTimelineObjectPrivate));
object_class->constructed = _constructed;
object_class->dispose = _dispose;
object_class->finalize = _finalize;
object_class->get_property = _get_property;
object_class->set_property = _set_property;
/**
* GESAssetTimelineObject:supported-formats:
*
* The formats supported by the asset.
*/
properties[PROP_SUPPORTED_FORMATS] = g_param_spec_flags ("supported-formats",
"Supported formats", "Formats supported by the file",
GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
properties[PROP_SUPPORTED_FORMATS]);
}
/***********************************************
* *
* Public methods *
* *
***********************************************/
/**
* ges_asset_timeline_object_set_supported_formats:
* @self: a #GESAssetTimelineObject
* @supportedformats: The track types supported by the GESAssetTimelineObject
*
* Sets track types for which objects extracted from @self can create #GESTrackObject
*/
void
ges_asset_timeline_object_set_supported_formats (GESAssetTimelineObject * self,
GESTrackType supportedformats)
{
g_return_if_fail (GES_IS_ASSET_TIMELINE_OBJECT (self));
self->priv->supportedformats = supportedformats;
}
/**
* ges_asset_timeline_object_get_supported_formats:
* @self: a #GESAssetTimelineObject
*
* Gets track types for which objects extracted from @self can create #GESTrackObject
*
* Returns: The track types on which @self will create TrackObject when added to
* a layer
*/
GESTrackType
ges_asset_timeline_object_get_supported_formats (GESAssetTimelineObject * self)
{
g_return_val_if_fail (GES_IS_ASSET_TIMELINE_OBJECT (self),
GES_TRACK_TYPE_UNKNOWN);
return self->priv->supportedformats;
}