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122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/* Gstreamer Editing Services
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*
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* Copyright (C) <2012> Thibault Saunier <thibault.saunier@collabora.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* SECTION: ges-effect-asset
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* @short_description: A GESAsset subclass specialized in GESEffect extraction
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*
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* This is internal, and implementation details, so we are not showing it in the
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* documentation
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*/
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#include "ges-effect-asset.h"
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#include "ges-track-element.h"
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#include "ges-internal.h"
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G_DEFINE_TYPE (GESEffectAsset, ges_effect_asset, GES_TYPE_TRACK_ELEMENT_ASSET);
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struct _GESEffectAssetPrivate
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{
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GESTrackType track_type;
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};
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/* GESAsset virtual methods implementation */
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static void
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_fill_track_type (GESAsset * asset)
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{
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GList *tmp;
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GstElement *effect = gst_parse_bin_from_description (ges_asset_get_id (asset),
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TRUE, NULL);
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if (effect == NULL)
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return;
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for (tmp = GST_BIN_CHILDREN (effect); tmp; tmp = tmp->next) {
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GstElementFactory *factory =
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gst_element_get_factory (GST_ELEMENT (tmp->data));
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const gchar *klass =
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gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_KLASS);
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if (g_strrstr (klass, "Effect")) {
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if (g_strrstr (klass, "Audio")) {
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GES_EFFECT_ASSET (asset)->priv->track_type = GES_TRACK_TYPE_AUDIO;
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break;
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} else if (g_strrstr (klass, "Video")) {
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GES_EFFECT_ASSET (asset)->priv->track_type = GES_TRACK_TYPE_VIDEO;
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break;
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}
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}
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}
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gst_object_unref (effect);
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return;
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}
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static GESExtractable *
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_extract (GESAsset * asset, GError ** error)
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{
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GESExtractable *effect;
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if (GES_EFFECT_ASSET (asset)->priv->track_type == GES_TRACK_TYPE_UNKNOWN)
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_fill_track_type (asset);
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effect = GES_ASSET_CLASS (ges_effect_asset_parent_class)->extract (asset,
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error);
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if (effect == NULL || (error && *error)) {
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effect = NULL;
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return NULL;
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}
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ges_track_element_set_track_type (GES_TRACK_ELEMENT (effect),
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GES_EFFECT_ASSET (asset)->priv->track_type);
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return effect;
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}
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static void
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ges_effect_asset_init (GESEffectAsset * self)
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{
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
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GES_TYPE_EFFECT_ASSET, GESEffectAssetPrivate);
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self->priv->track_type = GES_TRACK_TYPE_UNKNOWN;
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}
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static void
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ges_effect_asset_finalize (GObject * object)
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{
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/* TODO: Add deinitalization code here */
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G_OBJECT_CLASS (ges_effect_asset_parent_class)->finalize (object);
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}
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static void
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ges_effect_asset_class_init (GESEffectAssetClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GESAssetClass *asset_class = GES_ASSET_CLASS (klass);
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g_type_class_add_private (klass, sizeof (GESEffectAssetPrivate));
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object_class->finalize = ges_effect_asset_finalize;
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asset_class->extract = _extract;
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}
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