gstreamer/subprojects/gst-editing-services/ges/ges-track-element-asset.c

175 lines
4.5 KiB
C

/* Gstreamer Editing Services
*
* Copyright (C) <2012> 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: gestrackelementasset
* @title: GESTrackElementAsset
* @short_description: A GESAsset subclass specialized in GESTrackElement extraction
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ges-track-element-asset.h"
enum
{
PROP_0,
PROP_TRACK_TYPE,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
struct _GESTrackElementAssetPrivate
{
GESTrackType type;
};
G_DEFINE_TYPE_WITH_PRIVATE (GESTrackElementAsset, ges_track_element_asset,
GES_TYPE_ASSET);
static void
_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTrackElementAsset *asset = GES_TRACK_ELEMENT_ASSET (object);
switch (property_id) {
case PROP_TRACK_TYPE:
g_value_set_flags (value, asset->priv->type);
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)
{
GESTrackElementAsset *asset = GES_TRACK_ELEMENT_ASSET (object);
switch (property_id) {
case PROP_TRACK_TYPE:
asset->priv->type = g_value_get_flags (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_element_asset_class_init (GESTrackElementAssetClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = _get_property;
object_class->set_property = _set_property;
/**
* GESClip:track-type:
*
* The formats supported by the object.
*/
properties[PROP_TRACK_TYPE] = g_param_spec_flags ("track-type",
"Track type", "The GESTrackType in which the object is",
GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_UNKNOWN,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class, PROP_TRACK_TYPE,
properties[PROP_TRACK_TYPE]);
}
static void
ges_track_element_asset_init (GESTrackElementAsset * self)
{
GESTrackElementAssetPrivate *priv;
priv = self->priv = ges_track_element_asset_get_instance_private (self);
priv->type = GES_TRACK_TYPE_UNKNOWN;
}
/**
* ges_track_element_asset_set_track_type:
* @asset: A #GESAsset
* @type: A #GESTrackType
*
* Set the #GESTrackType the #GESTrackElement extracted from @self
* should get into
*/
void
ges_track_element_asset_set_track_type (GESTrackElementAsset * asset,
GESTrackType type)
{
g_return_if_fail (GES_IS_TRACK_ELEMENT_ASSET (asset));
asset->priv->type = type;
}
/**
* ges_track_element_asset_get_track_type:
* @asset: A #GESAsset
*
* Get the GESAssetTrackType the #GESTrackElement extracted from @self
* should get into
*
* Returns: a #GESTrackType
*/
const GESTrackType
ges_track_element_asset_get_track_type (GESTrackElementAsset * asset)
{
g_return_val_if_fail (GES_IS_TRACK_ELEMENT_ASSET (asset),
GES_TRACK_TYPE_UNKNOWN);
return asset->priv->type;
}
/**
* ges_track_element_asset_get_natural_framerate:
* @self: A #GESAsset
* @framerate_n: (out): The framerate numerator
* @framerate_d: (out): The framerate denominator
*
* Result: %TRUE if @self has a natural framerate %FALSE otherwise
*
* Since: 1.18
*/
gboolean
ges_track_element_asset_get_natural_framerate (GESTrackElementAsset * self,
gint * framerate_n, gint * framerate_d)
{
GESTrackElementAssetClass *klass;
g_return_val_if_fail (GES_IS_TRACK_ELEMENT_ASSET (self), FALSE);
g_return_val_if_fail (framerate_n && framerate_d, FALSE);
klass = GES_TRACK_ELEMENT_ASSET_GET_CLASS (self);
*framerate_n = 0;
*framerate_d = -1;
if (klass->get_natural_framerate)
return klass->get_natural_framerate (self, framerate_n, framerate_d);
return FALSE;
}