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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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5e448921d8
This was complexifying the implementation for very little gain. Each source type should ideally have its own API. In that patch we make it so we do not have to subclass anything but instead use GESAsset to pass information about how the pipeline should look like. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/175>
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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