151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gessourceclip
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* @title: GESSourceClip
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* @short_description: Base Class for sources of a #GESLayer
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*
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* #GESSourceClip-s are clips whose core elements are #GESSource-s.
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*
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* ## Effects
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*
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* #GESSourceClip-s can also have #GESBaseEffect-s added as non-core
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* elements. These effects are applied to the core sources of the clip
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* that they share a #GESTrack with. See #GESClip for how to add and move
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* these effects from the clip.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ges-internal.h"
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#include "ges-clip.h"
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#include "ges-source-clip.h"
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#include "ges-source.h"
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struct _GESSourceClipPrivate
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{
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/* dummy variable */
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void *nothing;
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};
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enum
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{
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PROP_0,
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};
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static GESExtractableInterface *parent_extractable_iface = NULL;
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static gchar *
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extractable_check_id (GType type, const gchar * id, GError ** error)
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{
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if (type == GES_TYPE_SOURCE_CLIP) {
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g_set_error (error, GES_ERROR, GES_ERROR_ASSET_WRONG_ID,
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"Only `time-overlay` is supported as an ID for type: `GESSourceClip`,"
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" got: '%s'", id);
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return NULL;
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}
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return parent_extractable_iface->check_id (type, id, error);
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}
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static GType
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extractable_get_real_extractable_type (GType wanted_type, const gchar * id)
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{
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GstStructure *structure;
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if (!id || (wanted_type != GES_TYPE_SOURCE_CLIP
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&& wanted_type != GES_TYPE_TEST_CLIP))
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return wanted_type;
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structure = gst_structure_new_from_string (id);
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if (!structure)
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return wanted_type;
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if (gst_structure_has_name (structure, "time-overlay"))
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/* Just reusing TestClip to create a GESTimeOverlayClip
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* as it already does the job! */
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wanted_type = GES_TYPE_TEST_CLIP;
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gst_structure_free (structure);
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return wanted_type;
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}
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static void
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extractable_interface_init (GESExtractableInterface * iface)
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{
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iface->asset_type = GES_TYPE_SOURCE_CLIP_ASSET;
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iface->get_real_extractable_type = extractable_get_real_extractable_type;
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iface->check_id = extractable_check_id;
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parent_extractable_iface = g_type_interface_peek_parent (iface);
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}
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G_DEFINE_TYPE_WITH_CODE (GESSourceClip, ges_source_clip,
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GES_TYPE_CLIP, G_ADD_PRIVATE (GESSourceClip)
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G_IMPLEMENT_INTERFACE (GES_TYPE_EXTRACTABLE, extractable_interface_init));
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static void
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ges_source_clip_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_source_clip_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_source_clip_finalize (GObject * object)
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{
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G_OBJECT_CLASS (ges_source_clip_parent_class)->finalize (object);
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}
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static void
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ges_source_clip_class_init (GESSourceClipClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = ges_source_clip_get_property;
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object_class->set_property = ges_source_clip_set_property;
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object_class->finalize = ges_source_clip_finalize;
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GES_CLIP_CLASS_CAN_ADD_EFFECTS (klass) = TRUE;
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}
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static void
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ges_source_clip_init (GESSourceClip * self)
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{
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self->priv = ges_source_clip_get_instance_private (self);
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}
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