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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1503 lines
45 KiB
C
1503 lines
45 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:gestrackelement
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* @title: GESTrackElement
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* @short_description: Base Class for objects contained in a GESTrack
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*
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* #GESTrackElement is the Base Class for any object that can be contained in a
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* #GESTrack.
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*
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* It contains the basic information as to the location of the object within
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* its container, like the start position, the inpoint, the duration and the
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* priority.
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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-extractable.h"
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#include "ges-track-element.h"
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#include "ges-clip.h"
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#include "ges-meta-container.h"
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struct _GESTrackElementPrivate
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{
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GESTrackType track_type;
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GstElement *nleobject; /* The NleObject */
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GstElement *element; /* The element contained in the nleobject (can be NULL) */
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GESTrack *track;
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gboolean locked; /* If TRUE, then moves in sync with its controlling
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* GESClip */
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GHashTable *bindings_hashtable; /* We need this if we want to be able to serialize
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and deserialize keyframes */
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};
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enum
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{
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PROP_0,
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PROP_ACTIVE,
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PROP_TRACK_TYPE,
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PROP_TRACK,
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PROP_LAST
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};
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static GParamSpec *properties[PROP_LAST];
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enum
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{
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CONTROL_BINDING_ADDED,
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CONTROL_BINDING_REMOVED,
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LAST_SIGNAL
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};
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static guint ges_track_element_signals[LAST_SIGNAL] = { 0 };
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G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GESTrackElement, ges_track_element,
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GES_TYPE_TIMELINE_ELEMENT);
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static GstElement *ges_track_element_create_gnl_object_func (GESTrackElement *
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object);
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static gboolean _set_start (GESTimelineElement * element, GstClockTime start);
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static gboolean _set_inpoint (GESTimelineElement * element,
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GstClockTime inpoint);
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static gboolean _set_duration (GESTimelineElement * element,
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GstClockTime duration);
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static gboolean _set_priority (GESTimelineElement * element, guint32 priority);
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GESTrackType _get_track_types (GESTimelineElement * object);
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static GParamSpec **default_list_children_properties (GESTrackElement * object,
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guint * n_properties);
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static void
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_update_control_bindings (GESTimelineElement * element, GstClockTime inpoint,
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GstClockTime duration);
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static gboolean
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_lookup_child (GESTrackElement * object,
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const gchar * prop_name, GstElement ** element, GParamSpec ** pspec)
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{
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return
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GES_TIMELINE_ELEMENT_GET_CLASS (object)->lookup_child
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(GES_TIMELINE_ELEMENT (object), prop_name, (GObject **) element, pspec);
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}
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static gboolean
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strv_find_str (const gchar ** strv, const char *str)
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{
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guint i;
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if (strv == NULL)
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return FALSE;
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for (i = 0; strv[i]; i++) {
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if (g_strcmp0 (strv[i], str) == 0)
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return TRUE;
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}
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return FALSE;
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}
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static guint32
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_get_layer_priority (GESTimelineElement * element)
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{
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if (!element->parent)
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return GES_TIMELINE_ELEMENT_NO_LAYER_PRIORITY;
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return ges_timeline_element_get_layer_priority (element->parent);
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}
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static void
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ges_track_element_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESTrackElement *track_element = GES_TRACK_ELEMENT (object);
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switch (property_id) {
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case PROP_ACTIVE:
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g_value_set_boolean (value, ges_track_element_is_active (track_element));
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break;
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case PROP_TRACK_TYPE:
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g_value_set_flags (value, track_element->priv->track_type);
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break;
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case PROP_TRACK:
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g_value_set_object (value, track_element->priv->track);
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break;
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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_track_element_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GESTrackElement *track_element = GES_TRACK_ELEMENT (object);
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switch (property_id) {
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case PROP_ACTIVE:
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ges_track_element_set_active (track_element, g_value_get_boolean (value));
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break;
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case PROP_TRACK_TYPE:
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track_element->priv->track_type = g_value_get_flags (value);
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break;
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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_track_element_dispose (GObject * object)
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{
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GESTrackElement *element = GES_TRACK_ELEMENT (object);
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GESTrackElementPrivate *priv = element->priv;
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if (priv->bindings_hashtable)
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g_hash_table_destroy (priv->bindings_hashtable);
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if (priv->nleobject) {
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GstState cstate;
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if (priv->track != NULL) {
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g_error ("%p Still in %p, this means that you forgot"
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" to remove it from the GESTrack it is contained in. You always need"
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" to remove a GESTrackElement from its track before dropping the last"
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" reference\n"
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"This problem may also be caused by a refcounting bug in"
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" the application or GES itself.", object, priv->track);
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gst_element_get_state (priv->nleobject, &cstate, NULL, 0);
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if (cstate != GST_STATE_NULL)
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gst_element_set_state (priv->nleobject, GST_STATE_NULL);
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}
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g_object_set_qdata (G_OBJECT (priv->nleobject),
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NLE_OBJECT_TRACK_ELEMENT_QUARK, NULL);
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gst_object_unref (priv->nleobject);
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priv->nleobject = NULL;
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}
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G_OBJECT_CLASS (ges_track_element_parent_class)->dispose (object);
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}
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static void
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ges_track_element_constructed (GObject * gobject)
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{
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GESTrackElementClass *class;
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GstElement *nleobject;
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gdouble media_duration_factor;
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gchar *tmp;
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GESTrackElement *object = GES_TRACK_ELEMENT (gobject);
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GST_DEBUG_OBJECT (object, "Creating NleObject");
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class = GES_TRACK_ELEMENT_GET_CLASS (object);
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g_assert (class->create_gnl_object);
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nleobject = class->create_gnl_object (object);
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if (G_UNLIKELY (nleobject == NULL)) {
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GST_ERROR_OBJECT (object, "Could not create NleObject");
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return;
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}
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tmp = g_strdup_printf ("%s:%s", G_OBJECT_TYPE_NAME (object),
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GST_OBJECT_NAME (nleobject));
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gst_object_set_name (GST_OBJECT (nleobject), tmp);
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g_free (tmp);
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GST_DEBUG_OBJECT (object, "Got a valid NleObject, now filling it in");
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object->priv->nleobject = gst_object_ref (nleobject);
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g_object_set_qdata (G_OBJECT (nleobject), NLE_OBJECT_TRACK_ELEMENT_QUARK,
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object);
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/* Set some properties on the NleObject */
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g_object_set (object->priv->nleobject,
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"start", GES_TIMELINE_ELEMENT_START (object),
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"inpoint", GES_TIMELINE_ELEMENT_INPOINT (object),
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"duration", GES_TIMELINE_ELEMENT_DURATION (object),
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"priority", GES_TIMELINE_ELEMENT_PRIORITY (object),
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"active", object->active, NULL);
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media_duration_factor =
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ges_timeline_element_get_media_duration_factor (GES_TIMELINE_ELEMENT
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(object));
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g_object_set (object->priv->nleobject,
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"media-duration-factor", media_duration_factor, NULL);
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G_OBJECT_CLASS (ges_track_element_parent_class)->constructed (gobject);
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}
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static void
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ges_track_element_class_init (GESTrackElementClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
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object_class->get_property = ges_track_element_get_property;
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object_class->set_property = ges_track_element_set_property;
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object_class->dispose = ges_track_element_dispose;
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object_class->constructed = ges_track_element_constructed;
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/**
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* GESTrackElement:active:
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*
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* Whether the object should be taken into account in the #GESTrack output.
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* If #FALSE, then its contents will not be used in the resulting track.
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*/
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properties[PROP_ACTIVE] =
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g_param_spec_boolean ("active", "Active", "Use object in output", TRUE,
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G_PARAM_READWRITE);
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g_object_class_install_property (object_class, PROP_ACTIVE,
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properties[PROP_ACTIVE]);
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properties[PROP_TRACK_TYPE] = g_param_spec_flags ("track-type", "Track Type",
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"The track type of the object", GES_TYPE_TRACK_TYPE,
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GES_TRACK_TYPE_UNKNOWN, G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class, PROP_TRACK_TYPE,
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properties[PROP_TRACK_TYPE]);
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properties[PROP_TRACK] = g_param_spec_object ("track", "Track",
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"The track the object is in", GES_TYPE_TRACK, G_PARAM_READABLE);
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g_object_class_install_property (object_class, PROP_TRACK,
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properties[PROP_TRACK]);
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/**
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* GESTrackElement::control-binding-added:
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* @track_element: a #GESTrackElement
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* @control_binding: the #GstControlBinding that has been added
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*
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* The control-binding-added signal is emitted each time a control binding
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* is added for a child property of @track_element
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*/
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ges_track_element_signals[CONTROL_BINDING_ADDED] =
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g_signal_new ("control-binding-added", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, 0, NULL, NULL, g_cclosure_marshal_generic,
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G_TYPE_NONE, 1, GST_TYPE_CONTROL_BINDING);
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/**
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* GESTrackElement::control-binding-removed:
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* @track_element: a #GESTrackElement
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* @control_binding: the #GstControlBinding that has been removed
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*
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* The control-binding-removed signal is emitted each time a control binding
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* is removed for a child property of @track_element
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*/
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ges_track_element_signals[CONTROL_BINDING_REMOVED] =
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g_signal_new ("control-binding-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, 0, NULL, NULL, g_cclosure_marshal_generic,
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G_TYPE_NONE, 1, GST_TYPE_CONTROL_BINDING);
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element_class->set_start = _set_start;
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element_class->set_duration = _set_duration;
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element_class->set_inpoint = _set_inpoint;
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element_class->set_priority = _set_priority;
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element_class->get_track_types = _get_track_types;
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element_class->deep_copy = ges_track_element_copy_properties;
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element_class->get_layer_priority = _get_layer_priority;
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klass->create_gnl_object = ges_track_element_create_gnl_object_func;
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klass->list_children_properties = default_list_children_properties;
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klass->lookup_child = _lookup_child;
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}
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static void
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ges_track_element_init (GESTrackElement * self)
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{
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GESTrackElementPrivate *priv = self->priv =
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ges_track_element_get_instance_private (self);
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/* Sane default values */
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GES_TIMELINE_ELEMENT_START (self) = 0;
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GES_TIMELINE_ELEMENT_INPOINT (self) = 0;
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GES_TIMELINE_ELEMENT_DURATION (self) = GST_SECOND;
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GES_TIMELINE_ELEMENT_PRIORITY (self) = 0;
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self->active = TRUE;
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priv->bindings_hashtable = g_hash_table_new_full (g_str_hash, g_str_equal,
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g_free, NULL);
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}
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static gfloat
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interpolate_values_for_position (GstTimedValue * first_value,
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GstTimedValue * second_value, guint64 position, gboolean absolute)
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{
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gfloat diff;
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GstClockTime interval;
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gfloat value_at_pos;
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g_assert (second_value || first_value);
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if (first_value == NULL)
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return second_value->value;
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if (second_value == NULL)
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return first_value->value;
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diff = second_value->value - first_value->value;
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interval = second_value->timestamp - first_value->timestamp;
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if (position > first_value->timestamp)
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value_at_pos =
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first_value->value + ((float) (position -
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first_value->timestamp) / (float) interval) * diff;
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else
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value_at_pos =
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first_value->value - ((float) (first_value->timestamp -
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position) / (float) interval) * diff;
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if (!absolute)
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value_at_pos = CLAMP (value_at_pos, 0.0, 1.0);
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return value_at_pos;
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}
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static void
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_update_control_bindings (GESTimelineElement * element, GstClockTime inpoint,
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GstClockTime duration)
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{
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GParamSpec **specs;
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guint n, n_specs;
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GstControlBinding *binding;
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GstTimedValueControlSource *source;
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GESTrackElement *self = GES_TRACK_ELEMENT (element);
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specs = ges_track_element_list_children_properties (self, &n_specs);
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for (n = 0; n < n_specs; ++n) {
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GList *values, *tmp;
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gboolean absolute;
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GstTimedValue *last, *first, *prev = NULL, *next = NULL;
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gfloat value_at_pos;
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binding = ges_track_element_get_control_binding (self, specs[n]->name);
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if (!binding)
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continue;
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g_object_get (binding, "control_source", &source, NULL);
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g_object_get (binding, "absolute", &absolute, NULL);
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if (duration == 0) {
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gst_timed_value_control_source_unset_all (GST_TIMED_VALUE_CONTROL_SOURCE
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(source));
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continue;
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}
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values =
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gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
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(source));
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if (g_list_length (values) == 0)
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continue;
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first = values->data;
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for (tmp = values->next; tmp; tmp = tmp->next) {
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next = tmp->data;
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if (next->timestamp > inpoint)
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break;
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}
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g_list_free (values);
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value_at_pos =
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interpolate_values_for_position (first, next, inpoint, absolute);
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gst_timed_value_control_source_unset (source, first->timestamp);
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gst_timed_value_control_source_set (source, inpoint, value_at_pos);
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values =
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gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
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(source));
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if (duration != GST_CLOCK_TIME_NONE) {
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last = g_list_last (values)->data;
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for (tmp = g_list_last (values)->prev; tmp; tmp = tmp->prev) {
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prev = tmp->data;
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if (prev->timestamp < duration + inpoint)
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break;
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}
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g_list_free (values);
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value_at_pos =
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interpolate_values_for_position (prev, last, duration + inpoint,
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absolute);
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gst_timed_value_control_source_unset (source, last->timestamp);
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gst_timed_value_control_source_set (source, duration + inpoint,
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value_at_pos);
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values =
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gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
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(source));
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}
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for (tmp = values; tmp; tmp = tmp->next) {
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GstTimedValue *value = tmp->data;
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if (value->timestamp < inpoint)
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gst_timed_value_control_source_unset (source, value->timestamp);
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else if (duration != GST_CLOCK_TIME_NONE
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&& value->timestamp > duration + inpoint)
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gst_timed_value_control_source_unset (source, value->timestamp);
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}
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g_list_free (values);
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}
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g_free (specs);
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}
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static gboolean
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_set_start (GESTimelineElement * element, GstClockTime start)
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{
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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if (G_UNLIKELY (start == _START (object)))
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return -1;
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g_object_set (object->priv->nleobject, "start", start, NULL);
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return TRUE;
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}
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static gboolean
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_set_inpoint (GESTimelineElement * element, GstClockTime inpoint)
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{
|
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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|
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
if (G_UNLIKELY (inpoint == _INPOINT (object)))
|
|
return -1;
|
|
|
|
g_object_set (object->priv->nleobject, "inpoint", inpoint, NULL);
|
|
_update_control_bindings (element, inpoint, GST_CLOCK_TIME_NONE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_set_duration (GESTimelineElement * element, GstClockTime duration)
|
|
{
|
|
GESTrackElement *object = GES_TRACK_ELEMENT (element);
|
|
GESTrackElementPrivate *priv = object->priv;
|
|
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (_MAXDURATION (element)) &&
|
|
duration > _INPOINT (object) + _MAXDURATION (element))
|
|
duration = _MAXDURATION (element) - _INPOINT (object);
|
|
|
|
if (G_UNLIKELY (duration == _DURATION (object)))
|
|
return -1;
|
|
|
|
g_object_set (priv->nleobject, "duration", duration, NULL);
|
|
|
|
_update_control_bindings (element, ges_timeline_element_get_inpoint (element),
|
|
duration);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_set_priority (GESTimelineElement * element, guint32 priority)
|
|
{
|
|
GESTrackElement *object = GES_TRACK_ELEMENT (element);
|
|
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
if (priority < MIN_NLE_PRIO) {
|
|
GST_INFO_OBJECT (element, "Priority (%d) < MIN_NLE_PRIO, setting it to %d",
|
|
priority, MIN_NLE_PRIO);
|
|
priority = MIN_NLE_PRIO;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (object, "priority:%" G_GUINT32_FORMAT, priority);
|
|
|
|
if (G_UNLIKELY (priority == _PRIORITY (object)))
|
|
return FALSE;
|
|
|
|
g_object_set (object->priv->nleobject, "priority", priority, NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GESTrackType
|
|
_get_track_types (GESTimelineElement * object)
|
|
{
|
|
return ges_track_element_get_track_type (GES_TRACK_ELEMENT (object));
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_active:
|
|
* @object: a #GESTrackElement
|
|
* @active: visibility
|
|
*
|
|
* Sets the usage of the @object. If @active is %TRUE, the object will be used for
|
|
* playback and rendering, else it will be ignored.
|
|
*
|
|
* Returns: %TRUE if the property was toggled, else %FALSE
|
|
*/
|
|
gboolean
|
|
ges_track_element_set_active (GESTrackElement * object, gboolean active)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (object, "object:%p, active:%d", object, active);
|
|
|
|
if (G_UNLIKELY (active == object->active))
|
|
return FALSE;
|
|
|
|
g_object_set (object->priv->nleobject, "active", active, NULL);
|
|
|
|
if (active != object->active) {
|
|
object->active = active;
|
|
if (GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed)
|
|
GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed (object, active);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
ges_track_element_set_track_type (GESTrackElement * object, GESTrackType type)
|
|
{
|
|
g_return_if_fail (GES_IS_TRACK_ELEMENT (object));
|
|
|
|
if (object->priv->track_type != type) {
|
|
object->priv->track_type = type;
|
|
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_TRACK_TYPE]);
|
|
}
|
|
}
|
|
|
|
GESTrackType
|
|
ges_track_element_get_track_type (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), GES_TRACK_TYPE_UNKNOWN);
|
|
|
|
return object->priv->track_type;
|
|
}
|
|
|
|
/* default 'create_gnl_object' virtual method implementation */
|
|
static GstElement *
|
|
ges_track_element_create_gnl_object_func (GESTrackElement * self)
|
|
{
|
|
GESTrackElementClass *klass = NULL;
|
|
GstElement *child = NULL;
|
|
GstElement *nleobject;
|
|
|
|
klass = GES_TRACK_ELEMENT_GET_CLASS (self);
|
|
|
|
if (G_UNLIKELY (self->priv->nleobject != NULL))
|
|
goto already_have_nleobject;
|
|
|
|
if (G_UNLIKELY (klass->nleobject_factorytype == NULL))
|
|
goto no_nlefactory;
|
|
|
|
GST_DEBUG ("Creating a supporting nleobject of type '%s'",
|
|
klass->nleobject_factorytype);
|
|
|
|
nleobject = gst_element_factory_make (klass->nleobject_factorytype, NULL);
|
|
|
|
if (G_UNLIKELY (nleobject == NULL))
|
|
goto no_nleobject;
|
|
|
|
if (klass->create_element) {
|
|
GST_DEBUG ("Calling subclass 'create_element' vmethod");
|
|
child = klass->create_element (self);
|
|
|
|
if (G_UNLIKELY (!child))
|
|
goto child_failure;
|
|
|
|
if (!gst_bin_add (GST_BIN (nleobject), child))
|
|
goto add_failure;
|
|
|
|
GST_DEBUG ("Succesfully got the element to put in the nleobject");
|
|
self->priv->element = child;
|
|
}
|
|
|
|
GST_DEBUG ("done");
|
|
return nleobject;
|
|
|
|
|
|
/* ERROR CASES */
|
|
|
|
already_have_nleobject:
|
|
{
|
|
GST_ERROR ("Already controlling a NleObject %s",
|
|
GST_ELEMENT_NAME (self->priv->nleobject));
|
|
return NULL;
|
|
}
|
|
|
|
no_nlefactory:
|
|
{
|
|
GST_ERROR ("No GESTrackElement::nleobject_factorytype implementation!");
|
|
return NULL;
|
|
}
|
|
|
|
no_nleobject:
|
|
{
|
|
GST_ERROR ("Error creating a nleobject of type '%s'",
|
|
klass->nleobject_factorytype);
|
|
return NULL;
|
|
}
|
|
|
|
child_failure:
|
|
{
|
|
GST_ERROR ("create_element returned NULL");
|
|
gst_object_unref (nleobject);
|
|
return NULL;
|
|
}
|
|
|
|
add_failure:
|
|
{
|
|
GST_ERROR ("Error adding the contents to the nleobject");
|
|
gst_object_unref (child);
|
|
gst_object_unref (nleobject);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ges_track_element_add_child_props (GESTrackElement * self,
|
|
GstElement * child, const gchar ** wanted_categories,
|
|
const gchar ** blacklist, const gchar ** whitelist)
|
|
{
|
|
GstElementFactory *factory;
|
|
const gchar *klass;
|
|
GParamSpec **parray;
|
|
GObjectClass *gobject_klass;
|
|
gchar **categories;
|
|
guint i;
|
|
|
|
factory = gst_element_get_factory (child);
|
|
klass = gst_element_factory_get_metadata (factory,
|
|
GST_ELEMENT_METADATA_KLASS);
|
|
|
|
if (strv_find_str (blacklist, GST_OBJECT_NAME (factory))) {
|
|
GST_DEBUG_OBJECT (self, "%s blacklisted", GST_OBJECT_NAME (factory));
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (self, "Looking at element '%s' of klass '%s'",
|
|
GST_ELEMENT_NAME (child), klass);
|
|
|
|
categories = g_strsplit (klass, "/", 0);
|
|
|
|
for (i = 0; categories[i]; i++) {
|
|
if ((!wanted_categories ||
|
|
strv_find_str (wanted_categories, categories[i]))) {
|
|
guint i, nb_specs;
|
|
|
|
gobject_klass = G_OBJECT_GET_CLASS (child);
|
|
parray = g_object_class_list_properties (gobject_klass, &nb_specs);
|
|
for (i = 0; i < nb_specs; i++) {
|
|
if ((!whitelist && (parray[i]->flags & G_PARAM_WRITABLE))
|
|
|| (strv_find_str (whitelist, parray[i]->name))) {
|
|
ges_timeline_element_add_child_property (GES_TIMELINE_ELEMENT
|
|
(self), parray[i], G_OBJECT (child));
|
|
}
|
|
}
|
|
g_free (parray);
|
|
|
|
GST_DEBUG
|
|
("%d configurable properties of '%s' added to property hashtable",
|
|
nb_specs, GST_ELEMENT_NAME (child));
|
|
break;
|
|
}
|
|
}
|
|
|
|
g_strfreev (categories);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_add_children_props:
|
|
* @self: The #GESTrackElement to set chidlren props on
|
|
* @element: The GstElement to retrieve properties from
|
|
* @wanted_categories: (array zero-terminated=1) (transfer none) (allow-none):
|
|
* An array of categories of GstElement to
|
|
* take into account (as defined in the factory meta "klass" field)
|
|
* @blacklist: (array zero-terminated=1) (transfer none) (allow-none): A
|
|
* blacklist of elements factory names to not take into account
|
|
* @whitelist: (array zero-terminated=1) (transfer none) (allow-none): A list
|
|
* of propery names to add as children properties
|
|
*
|
|
* Looks for the properties defines with the various parametters and add
|
|
* them to the hashtable of children properties.
|
|
*
|
|
* To be used by subclasses only
|
|
*/
|
|
void
|
|
ges_track_element_add_children_props (GESTrackElement * self,
|
|
GstElement * element, const gchar ** wanted_categories,
|
|
const gchar ** blacklist, const gchar ** whitelist)
|
|
{
|
|
GValue item = { 0, };
|
|
GstIterator *it;
|
|
gboolean done = FALSE;
|
|
|
|
if (!GST_IS_BIN (element)) {
|
|
ges_track_element_add_child_props (self, element, wanted_categories,
|
|
blacklist, whitelist);
|
|
return;
|
|
}
|
|
|
|
/* We go over child elements recursivly, and add writable properties to the
|
|
* hashtable */
|
|
it = gst_bin_iterate_recurse (GST_BIN (element));
|
|
while (!done) {
|
|
switch (gst_iterator_next (it, &item)) {
|
|
case GST_ITERATOR_OK:
|
|
{
|
|
GstElement *child = g_value_get_object (&item);
|
|
ges_track_element_add_child_props (self, child, wanted_categories,
|
|
blacklist, whitelist);
|
|
g_value_reset (&item);
|
|
break;
|
|
}
|
|
case GST_ITERATOR_RESYNC:
|
|
/* FIXME, properly restart the process */
|
|
GST_DEBUG ("iterator resync");
|
|
gst_iterator_resync (it);
|
|
break;
|
|
|
|
case GST_ITERATOR_DONE:
|
|
GST_DEBUG ("iterator done");
|
|
done = TRUE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
g_value_unset (&item);
|
|
}
|
|
gst_iterator_free (it);
|
|
}
|
|
|
|
/* INTERNAL USAGE */
|
|
gboolean
|
|
ges_track_element_set_track (GESTrackElement * object, GESTrack * track)
|
|
{
|
|
gboolean ret = TRUE;
|
|
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (object, "new track: %" GST_PTR_FORMAT, track);
|
|
|
|
object->priv->track = track;
|
|
|
|
if (object->priv->track) {
|
|
ges_track_element_set_track_type (object, track->type);
|
|
|
|
g_object_set (object->priv->nleobject,
|
|
"caps", ges_track_get_caps (object->priv->track), NULL);
|
|
}
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_TRACK]);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_all_control_bindings
|
|
* @trackelement: The #GESTrackElement from which to get all set bindings
|
|
*
|
|
* Returns: (element-type gchar* GstControlBinding)(transfer none): A
|
|
* #GHashTable containing all property_name: GstControlBinding
|
|
*/
|
|
GHashTable *
|
|
ges_track_element_get_all_control_bindings (GESTrackElement * trackelement)
|
|
{
|
|
GESTrackElementPrivate *priv = GES_TRACK_ELEMENT (trackelement)->priv;
|
|
|
|
return priv->bindings_hashtable;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_track:
|
|
* @object: a #GESTrackElement
|
|
*
|
|
* Get the #GESTrack to which this object belongs.
|
|
*
|
|
* Returns: (transfer none) (nullable): The #GESTrack to which this object
|
|
* belongs. Can be %NULL if it is not in any track
|
|
*/
|
|
GESTrack *
|
|
ges_track_element_get_track (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), NULL);
|
|
|
|
return object->priv->track;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_gnlobject:
|
|
* @object: a #GESTrackElement
|
|
*
|
|
* Get the NleObject object this object is controlling.
|
|
*
|
|
* Returns: (transfer none): the NleObject object this object is controlling.
|
|
*
|
|
* Deprecated: use #ges_track_element_get_nleobject instead.
|
|
*/
|
|
GstElement *
|
|
ges_track_element_get_gnlobject (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), NULL);
|
|
|
|
return object->priv->nleobject;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_nleobject:
|
|
* @object: a #GESTrackElement
|
|
*
|
|
* Get the GNonLin object this object is controlling.
|
|
*
|
|
* Returns: (transfer none): the GNonLin object this object is controlling.
|
|
*
|
|
* Since: 1.6
|
|
*/
|
|
GstElement *
|
|
ges_track_element_get_nleobject (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), NULL);
|
|
|
|
return object->priv->nleobject;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_element:
|
|
* @object: a #GESTrackElement
|
|
*
|
|
* Get the #GstElement this track element is controlling within GNonLin.
|
|
*
|
|
* Returns: (transfer none): the #GstElement this track element is controlling
|
|
* within GNonLin.
|
|
*/
|
|
GstElement *
|
|
ges_track_element_get_element (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), NULL);
|
|
|
|
return object->priv->element;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_is_active:
|
|
* @object: a #GESTrackElement
|
|
*
|
|
* Lets you know if @object will be used for playback and rendering,
|
|
* or not.
|
|
*
|
|
* Returns: %TRUE if @object is active, %FALSE otherwize
|
|
*/
|
|
gboolean
|
|
ges_track_element_is_active (GESTrackElement * object)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
|
|
g_return_val_if_fail (object->priv->nleobject, FALSE);
|
|
|
|
return object->active;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_lookup_child:
|
|
* @object: object to lookup the property in
|
|
* @prop_name: name of the property to look up. You can specify the name of the
|
|
* class as such: "ClassName::property-name", to guarantee that you get the
|
|
* proper GParamSpec in case various GstElement-s contain the same property
|
|
* name. If you don't do so, you will get the first element found, having
|
|
* this property and the and the corresponding GParamSpec.
|
|
* @element: (out) (allow-none) (transfer full): pointer to a #GstElement that
|
|
* takes the real object to set property on
|
|
* @pspec: (out) (allow-none) (transfer full): pointer to take the #GParamSpec
|
|
* describing the property
|
|
*
|
|
* Looks up which @element and @pspec would be effected by the given @name. If various
|
|
* contained elements have this property name you will get the first one, unless you
|
|
* specify the class name in @name.
|
|
*
|
|
* Returns: TRUE if @element and @pspec could be found. FALSE otherwise. In that
|
|
* case the values for @pspec and @element are not modified. Unref @element after
|
|
* usage.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_lookup_child
|
|
*/
|
|
gboolean
|
|
ges_track_element_lookup_child (GESTrackElement * object,
|
|
const gchar * prop_name, GstElement ** element, GParamSpec ** pspec)
|
|
{
|
|
return ges_timeline_element_lookup_child (GES_TIMELINE_ELEMENT (object),
|
|
prop_name, ((GObject **) element), pspec);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_child_property_by_pspec: (skip):
|
|
* @object: a #GESTrackElement
|
|
* @pspec: The #GParamSpec that specifies the property you want to set
|
|
* @value: the value
|
|
*
|
|
* Sets a property of a child of @object.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_set_child_property_by_spec
|
|
*/
|
|
void
|
|
ges_track_element_set_child_property_by_pspec (GESTrackElement * object,
|
|
GParamSpec * pspec, GValue * value)
|
|
{
|
|
g_return_if_fail (GES_IS_TRACK_ELEMENT (object));
|
|
|
|
ges_timeline_element_set_child_property_by_pspec (GES_TIMELINE_ELEMENT
|
|
(object), pspec, value);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_child_property_valist: (skip):
|
|
* @object: The #GESTrackElement parent object
|
|
* @first_property_name: The name of the first property to set
|
|
* @var_args: value for the first property, followed optionally by more
|
|
* name/return location pairs, followed by NULL
|
|
*
|
|
* Sets a property of a child of @object. If there are various child elements
|
|
* that have the same property name, you can distinguish them using the following
|
|
* syntax: 'ClasseName::property_name' as property name. If you don't, the
|
|
* corresponding property of the first element found will be set.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_set_child_property_valist
|
|
*/
|
|
void
|
|
ges_track_element_set_child_property_valist (GESTrackElement * object,
|
|
const gchar * first_property_name, va_list var_args)
|
|
{
|
|
ges_timeline_element_set_child_property_valist (GES_TIMELINE_ELEMENT (object),
|
|
first_property_name, var_args);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_child_properties: (skip):
|
|
* @object: The #GESTrackElement parent object
|
|
* @first_property_name: The name of the first property to set
|
|
* @...: value for the first property, followed optionally by more
|
|
* name/return location pairs, followed by NULL
|
|
*
|
|
* Sets a property of a child of @object. If there are various child elements
|
|
* that have the same property name, you can distinguish them using the following
|
|
* syntax: 'ClasseName::property_name' as property name. If you don't, the
|
|
* corresponding property of the first element found will be set.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_set_child_properties
|
|
*/
|
|
void
|
|
ges_track_element_set_child_properties (GESTrackElement * object,
|
|
const gchar * first_property_name, ...)
|
|
{
|
|
va_list var_args;
|
|
|
|
g_return_if_fail (GES_IS_TRACK_ELEMENT (object));
|
|
|
|
va_start (var_args, first_property_name);
|
|
ges_track_element_set_child_property_valist (object, first_property_name,
|
|
var_args);
|
|
va_end (var_args);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_child_property_valist: (skip):
|
|
* @object: The #GESTrackElement parent object
|
|
* @first_property_name: The name of the first property to get
|
|
* @var_args: value for the first property, followed optionally by more
|
|
* name/return location pairs, followed by NULL
|
|
*
|
|
* Gets a property of a child of @object. If there are various child elements
|
|
* that have the same property name, you can distinguish them using the following
|
|
* syntax: 'ClasseName::property_name' as property name. If you don't, the
|
|
* corresponding property of the first element found will be set.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_get_child_property_valist
|
|
*/
|
|
void
|
|
ges_track_element_get_child_property_valist (GESTrackElement * object,
|
|
const gchar * first_property_name, va_list var_args)
|
|
{
|
|
ges_timeline_element_get_child_property_valist (GES_TIMELINE_ELEMENT (object),
|
|
first_property_name, var_args);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_list_children_properties:
|
|
* @object: The #GESTrackElement to get the list of children properties from
|
|
* @n_properties: (out): return location for the length of the returned array
|
|
*
|
|
* Gets an array of #GParamSpec* for all configurable properties of the
|
|
* children of @object.
|
|
*
|
|
* Returns: (transfer full) (array length=n_properties): an array of #GParamSpec* which should be freed after use or
|
|
* %NULL if something went wrong
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_list_children_properties
|
|
*/
|
|
GParamSpec **
|
|
ges_track_element_list_children_properties (GESTrackElement * object,
|
|
guint * n_properties)
|
|
{
|
|
return
|
|
ges_timeline_element_list_children_properties (GES_TIMELINE_ELEMENT
|
|
(object), n_properties);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_child_properties: (skip):
|
|
* @object: The origin #GESTrackElement
|
|
* @first_property_name: The name of the first property to get
|
|
* @...: return location for the first property, followed optionally by more
|
|
* name/return location pairs, followed by NULL
|
|
*
|
|
* Gets properties of a child of @object.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_get_child_properties
|
|
*/
|
|
void
|
|
ges_track_element_get_child_properties (GESTrackElement * object,
|
|
const gchar * first_property_name, ...)
|
|
{
|
|
va_list var_args;
|
|
|
|
g_return_if_fail (GES_IS_TRACK_ELEMENT (object));
|
|
|
|
va_start (var_args, first_property_name);
|
|
ges_track_element_get_child_property_valist (object, first_property_name,
|
|
var_args);
|
|
va_end (var_args);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_child_property_by_pspec: (skip):
|
|
* @object: a #GESTrackElement
|
|
* @pspec: The #GParamSpec that specifies the property you want to get
|
|
* @value: (out): return location for the value
|
|
*
|
|
* Gets a property of a child of @object.
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_get_child_property_by_pspec
|
|
*/
|
|
void
|
|
ges_track_element_get_child_property_by_pspec (GESTrackElement * object,
|
|
GParamSpec * pspec, GValue * value)
|
|
{
|
|
ges_timeline_element_get_child_property_by_pspec (GES_TIMELINE_ELEMENT
|
|
(object), pspec, value);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_child_property: (skip):
|
|
* @object: The origin #GESTrackElement
|
|
* @property_name: The name of the property
|
|
* @value: the value
|
|
*
|
|
* Sets a property of a GstElement contained in @object.
|
|
*
|
|
* Note that #ges_track_element_set_child_property is really
|
|
* intended for language bindings, #ges_track_element_set_child_properties
|
|
* is much more convenient for C programming.
|
|
*
|
|
* Returns: %TRUE if the property was set, %FALSE otherwize
|
|
*
|
|
* Deprecated: use #ges_timeline_element_set_child_property instead
|
|
*/
|
|
gboolean
|
|
ges_track_element_set_child_property (GESTrackElement * object,
|
|
const gchar * property_name, GValue * value)
|
|
{
|
|
return ges_timeline_element_set_child_property (GES_TIMELINE_ELEMENT (object),
|
|
property_name, value);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_child_property: (skip):
|
|
* @object: The origin #GESTrackElement
|
|
* @property_name: The name of the property
|
|
* @value: (out): return location for the property value, it will
|
|
* be initialized if it is initialized with 0
|
|
*
|
|
* In general, a copy is made of the property contents and
|
|
* the caller is responsible for freeing the memory by calling
|
|
* g_value_unset().
|
|
*
|
|
* Gets a property of a GstElement contained in @object.
|
|
*
|
|
* Note that #ges_track_element_get_child_property is really
|
|
* intended for language bindings, #ges_track_element_get_child_properties
|
|
* is much more convenient for C programming.
|
|
*
|
|
* Returns: %TRUE if the property was found, %FALSE otherwize
|
|
*
|
|
* Deprecated: Use #ges_timeline_element_get_child_property
|
|
*/
|
|
gboolean
|
|
ges_track_element_get_child_property (GESTrackElement * object,
|
|
const gchar * property_name, GValue * value)
|
|
{
|
|
return ges_timeline_element_get_child_property (GES_TIMELINE_ELEMENT (object),
|
|
property_name, value);
|
|
}
|
|
|
|
static GParamSpec **
|
|
default_list_children_properties (GESTrackElement * object,
|
|
guint * n_properties)
|
|
{
|
|
return
|
|
GES_TIMELINE_ELEMENT_GET_CLASS (object)->list_children_properties
|
|
(GES_TIMELINE_ELEMENT (object), n_properties);
|
|
}
|
|
|
|
void
|
|
ges_track_element_copy_properties (GESTimelineElement * element,
|
|
GESTimelineElement * elementcopy)
|
|
{
|
|
GParamSpec **specs;
|
|
guint n, n_specs;
|
|
GValue val = { 0 };
|
|
GESTrackElement *copy = GES_TRACK_ELEMENT (elementcopy);
|
|
|
|
specs =
|
|
ges_track_element_list_children_properties (GES_TRACK_ELEMENT (element),
|
|
&n_specs);
|
|
for (n = 0; n < n_specs; ++n) {
|
|
if (!(specs[n]->flags & G_PARAM_WRITABLE))
|
|
continue;
|
|
g_value_init (&val, specs[n]->value_type);
|
|
ges_track_element_get_child_property_by_pspec (GES_TRACK_ELEMENT (element),
|
|
specs[n], &val);
|
|
ges_track_element_set_child_property_by_pspec (copy, specs[n], &val);
|
|
g_value_unset (&val);
|
|
}
|
|
|
|
g_free (specs);
|
|
}
|
|
|
|
static void
|
|
_split_binding (GESTrackElement * element, GESTrackElement * new_element,
|
|
guint64 position, GstTimedValueControlSource * source,
|
|
GstTimedValueControlSource * new_source, gboolean absolute)
|
|
{
|
|
GstTimedValue *last_value = NULL;
|
|
gboolean past_position = FALSE;
|
|
GList *values, *tmp;
|
|
|
|
values =
|
|
gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
|
|
(source));
|
|
|
|
for (tmp = values; tmp; tmp = tmp->next) {
|
|
GstTimedValue *value = tmp->data;
|
|
|
|
if (value->timestamp > position && !past_position) {
|
|
gfloat value_at_pos;
|
|
|
|
/* FIXME We should be able to use gst_control_source_get_value so
|
|
* all modes are handled. Right now that method only works if the value
|
|
* we are looking for is between two actual keyframes which is not enough
|
|
* in our case. bug #706621 */
|
|
value_at_pos =
|
|
interpolate_values_for_position (last_value, value, position,
|
|
absolute);
|
|
|
|
past_position = TRUE;
|
|
|
|
gst_timed_value_control_source_set (new_source, position, value_at_pos);
|
|
gst_timed_value_control_source_set (new_source, value->timestamp,
|
|
value->value);
|
|
|
|
gst_timed_value_control_source_unset (source, value->timestamp);
|
|
gst_timed_value_control_source_set (source, position, value_at_pos);
|
|
} else if (past_position) {
|
|
gst_timed_value_control_source_set (new_source, value->timestamp,
|
|
value->value);
|
|
gst_timed_value_control_source_unset (source, value->timestamp);
|
|
}
|
|
last_value = value;
|
|
|
|
}
|
|
g_list_free (values);
|
|
}
|
|
|
|
static void
|
|
_copy_binding (GESTrackElement * element, GESTrackElement * new_element,
|
|
guint64 position, GstTimedValueControlSource * source,
|
|
GstTimedValueControlSource * new_source, gboolean absolute)
|
|
{
|
|
GList *values, *tmp;
|
|
|
|
values =
|
|
gst_timed_value_control_source_get_all (GST_TIMED_VALUE_CONTROL_SOURCE
|
|
(source));
|
|
for (tmp = values; tmp; tmp = tmp->next) {
|
|
GstTimedValue *value = tmp->data;
|
|
|
|
gst_timed_value_control_source_set (new_source, value->timestamp,
|
|
value->value);
|
|
}
|
|
g_list_free (values);
|
|
}
|
|
|
|
/* position == GST_CLOCK_TIME_NONE means that we do a simple copy
|
|
* other position means that the function will do a splitting
|
|
* and thus interpollate the values in the element and new_element
|
|
*/
|
|
void
|
|
ges_track_element_copy_bindings (GESTrackElement * element,
|
|
GESTrackElement * new_element, guint64 position)
|
|
{
|
|
GParamSpec **specs;
|
|
guint n, n_specs;
|
|
gboolean absolute;
|
|
GstControlBinding *binding;
|
|
GstTimedValueControlSource *source, *new_source;
|
|
|
|
specs =
|
|
ges_track_element_list_children_properties (GES_TRACK_ELEMENT (element),
|
|
&n_specs);
|
|
for (n = 0; n < n_specs; ++n) {
|
|
GstInterpolationMode mode;
|
|
|
|
binding = ges_track_element_get_control_binding (element, specs[n]->name);
|
|
if (!binding)
|
|
continue;
|
|
|
|
/* FIXME : this should work as well with other types of control sources */
|
|
g_object_get (binding, "control_source", &source, NULL);
|
|
if (!GST_IS_TIMED_VALUE_CONTROL_SOURCE (source))
|
|
continue;
|
|
|
|
g_object_get (binding, "absolute", &absolute, NULL);
|
|
g_object_get (source, "mode", &mode, NULL);
|
|
|
|
new_source =
|
|
GST_TIMED_VALUE_CONTROL_SOURCE (gst_interpolation_control_source_new
|
|
());
|
|
g_object_set (new_source, "mode", mode, NULL);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (position))
|
|
_split_binding (element, new_element, position, source, new_source,
|
|
absolute);
|
|
else
|
|
_copy_binding (element, new_element, position, source, new_source,
|
|
absolute);
|
|
|
|
/* We only manage direct (absolute) bindings, see TODO in set_control_source */
|
|
if (absolute)
|
|
ges_track_element_set_control_source (new_element,
|
|
GST_CONTROL_SOURCE (new_source), specs[n]->name, "direct-absolute");
|
|
else
|
|
ges_track_element_set_control_source (new_element,
|
|
GST_CONTROL_SOURCE (new_source), specs[n]->name, "direct");
|
|
}
|
|
|
|
g_free (specs);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_edit:
|
|
* @object: the #GESTrackElement to edit
|
|
* @layers: (element-type GESLayer): The layers you want the edit to
|
|
* happen in, %NULL means that the edition is done in all the
|
|
* #GESLayers contained in the current timeline.
|
|
* FIXME: This is not implemented yet.
|
|
* @mode: The #GESEditMode in which the edition will happen.
|
|
* @edge: The #GESEdge the edit should happen on.
|
|
* @position: The position at which to edit @object (in nanosecond)
|
|
*
|
|
* Edit @object in the different exisiting #GESEditMode modes. In the case of
|
|
* slide, and roll, you need to specify a #GESEdge
|
|
*
|
|
* Returns: %TRUE if the object as been edited properly, %FALSE if an error
|
|
* occured
|
|
*
|
|
* Deprecated: 1.18: use #ges_timeline_element_edit instead.
|
|
*/
|
|
gboolean
|
|
ges_track_element_edit (GESTrackElement * object,
|
|
GList * layers, GESEditMode mode, GESEdge edge, guint64 position)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
|
|
|
|
return ges_timeline_element_edit (GES_TIMELINE_ELEMENT (object),
|
|
layers, -1, mode, edge, position);
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_remove_control_binding:
|
|
* @object: the #GESTrackElement on which to set a control binding
|
|
* @property_name: The name of the property to control.
|
|
*
|
|
* Removes a #GstControlBinding from @object.
|
|
*
|
|
* Returns: %TRUE if the binding could be removed, %FALSE if an error
|
|
* occured
|
|
*/
|
|
gboolean
|
|
ges_track_element_remove_control_binding (GESTrackElement * object,
|
|
const gchar * property_name)
|
|
{
|
|
GESTrackElementPrivate *priv;
|
|
GstControlBinding *binding;
|
|
GstObject *target;
|
|
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
|
|
|
|
priv = GES_TRACK_ELEMENT (object)->priv;
|
|
binding =
|
|
(GstControlBinding *) g_hash_table_lookup (priv->bindings_hashtable,
|
|
property_name);
|
|
|
|
if (binding) {
|
|
g_object_get (binding, "object", &target, NULL);
|
|
GST_DEBUG_OBJECT (object, "Removing binding %p for property %s", binding,
|
|
property_name);
|
|
|
|
gst_object_ref (binding);
|
|
gst_object_remove_control_binding (target, binding);
|
|
|
|
g_signal_emit (object, ges_track_element_signals[CONTROL_BINDING_REMOVED],
|
|
0, binding);
|
|
|
|
gst_object_unref (target);
|
|
gst_object_unref (binding);
|
|
g_hash_table_remove (priv->bindings_hashtable, property_name);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_set_control_source:
|
|
* @object: the #GESTrackElement on which to set a control binding
|
|
* @source: the #GstControlSource to set on the binding.
|
|
* @property_name: The name of the property to control.
|
|
* @binding_type: The type of binding to create. Currently the following values are valid:
|
|
* - "direct": See #gst_direct_control_binding_new
|
|
* - "direct-absolute": See #gst_direct_control_binding_new_absolute
|
|
*
|
|
* Creates a #GstControlBinding and adds it to the #GstElement concerned by the
|
|
* property. Use the same syntax as #ges_track_element_lookup_child for
|
|
* the property name.
|
|
*
|
|
* Returns: %TRUE if the binding could be created and added, %FALSE if an error
|
|
* occured
|
|
*/
|
|
gboolean
|
|
ges_track_element_set_control_source (GESTrackElement * object,
|
|
GstControlSource * source,
|
|
const gchar * property_name, const gchar * binding_type)
|
|
{
|
|
GESTrackElementPrivate *priv;
|
|
GstElement *element;
|
|
GParamSpec *pspec;
|
|
GstControlBinding *binding;
|
|
gboolean direct, direct_absolute;
|
|
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
|
|
priv = GES_TRACK_ELEMENT (object)->priv;
|
|
|
|
if (G_UNLIKELY (!(GST_IS_CONTROL_SOURCE (source)))) {
|
|
GST_WARNING
|
|
("You need to provide a non-null control source to build a new control binding");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!ges_track_element_lookup_child (object, property_name, &element, &pspec)) {
|
|
GST_WARNING ("You need to provide a valid and controllable property name");
|
|
return FALSE;
|
|
}
|
|
|
|
/* TODO : update this according to new types of bindings */
|
|
direct = !g_strcmp0 (binding_type, "direct");
|
|
direct_absolute = !g_strcmp0 (binding_type, "direct-absolute");
|
|
|
|
if (direct || direct_absolute) {
|
|
/* First remove existing binding */
|
|
if (ges_track_element_remove_control_binding (object, property_name)) {
|
|
GST_LOG ("Removed old binding for property %s", property_name);
|
|
}
|
|
|
|
if (direct_absolute)
|
|
binding =
|
|
gst_direct_control_binding_new_absolute (GST_OBJECT (element),
|
|
property_name, source);
|
|
else
|
|
binding =
|
|
gst_direct_control_binding_new (GST_OBJECT (element), property_name,
|
|
source);
|
|
|
|
gst_object_add_control_binding (GST_OBJECT (element), binding);
|
|
g_hash_table_insert (priv->bindings_hashtable, g_strdup (property_name),
|
|
binding);
|
|
g_signal_emit (object, ges_track_element_signals[CONTROL_BINDING_ADDED],
|
|
0, binding);
|
|
return TRUE;
|
|
}
|
|
|
|
GST_WARNING ("Binding type must be in [direct]");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* ges_track_element_get_control_binding:
|
|
* @object: the #GESTrackElement in which to lookup the bindings.
|
|
* @property_name: The property_name to which the binding is associated.
|
|
*
|
|
* Looks up the various controlled properties for that #GESTrackElement,
|
|
* and returns the #GstControlBinding which controls @property_name.
|
|
*
|
|
* Returns: (transfer none) (nullable): the #GstControlBinding associated with
|
|
* @property_name, or %NULL if that property is not controlled.
|
|
*/
|
|
GstControlBinding *
|
|
ges_track_element_get_control_binding (GESTrackElement * object,
|
|
const gchar * property_name)
|
|
{
|
|
GESTrackElementPrivate *priv;
|
|
GstControlBinding *binding;
|
|
|
|
g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), NULL);
|
|
|
|
priv = GES_TRACK_ELEMENT (object)->priv;
|
|
|
|
binding =
|
|
(GstControlBinding *) g_hash_table_lookup (priv->bindings_hashtable,
|
|
property_name);
|
|
return binding;
|
|
}
|