gstreamer/ges/ges-timeline-element.c
Thibault Saunier 15782c6ecd ges: Update the media-duration-factor each time a child property is set
Otherwise the changes won't be reflected in the NLE backend.

This makes speed changes working inside ges-launch-1.0

  ges-launch-1.0 +clip /path/to/file i=10 d=5 +effect videorate set-rate 5.0

https://bugzilla.gnome.org/show_bug.cgi?id=794699
2018-03-26 12:39:55 -03:00

1882 lines
52 KiB
C

/* gst-editing-services
* Copyright (C) <2013> Thibault Saunier <thibault.saunier@collabora.com>
* <2013> Collabora Ltd.
*
* gst-editing-services is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* gst-editing-services is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:gestimelineelement
* @title: GESTimelineElement
* @short_description: Base Class for all elements that will be in a way or
* another inside a GESTimeline.
*
* The GESTimelineElement base class implements the notion of timing as well
* as priority. A GESTimelineElement can have a parent object which will be
* responsible for controlling its timing properties.
*/
#include "ges-utils.h"
#include "ges-timeline-element.h"
#include "ges-extractable.h"
#include "ges-meta-container.h"
#include "ges-internal.h"
#include "ges-effect.h"
#include <string.h>
#include <gobject/gvaluecollector.h>
/* maps type name quark => count */
static GData *object_name_counts = NULL;
static void
extractable_set_asset (GESExtractable * extractable, GESAsset * asset)
{
GES_TIMELINE_ELEMENT (extractable)->asset = asset;
}
static void
ges_extractable_interface_init (GESExtractableInterface * iface)
{
iface->set_asset = extractable_set_asset;
}
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GESTimelineElement, ges_timeline_element,
G_TYPE_INITIALLY_UNOWNED,
G_IMPLEMENT_INTERFACE (GES_TYPE_EXTRACTABLE, ges_extractable_interface_init)
G_IMPLEMENT_INTERFACE (GES_TYPE_META_CONTAINER, NULL));
enum
{
PROP_0,
PROP_PARENT,
PROP_TIMELINE,
PROP_START,
PROP_INPOINT,
PROP_DURATION,
PROP_MAX_DURATION,
PROP_PRIORITY,
PROP_NAME,
PROP_SERIALIZE,
PROP_LAST
};
enum
{
DEEP_NOTIFY,
LAST_SIGNAL
};
static guint ges_timeline_element_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *properties[PROP_LAST] = { NULL, };
typedef struct
{
GObject *child;
gulong handler_id;
} ChildPropHandler;
struct _GESTimelineElementPrivate
{
gboolean serialize;
/* We keep a link between properties name and elements internally
* The hashtable should look like
* {GParamaSpec ---> child}*/
GHashTable *children_props;
GESTimelineElement *copied_from;
};
typedef struct
{
GObject *child;
GParamSpec *arg;
GESTimelineElement *self;
} EmitDeepNotifyInIdleData;
static void
_set_child_property (GESTimelineElement * self G_GNUC_UNUSED, GObject * child,
GParamSpec * pspec, GValue * value)
{
g_object_set_property (child, pspec->name, value);
}
static gboolean
_lookup_child (GESTimelineElement * self, const gchar * prop_name,
GObject ** child, GParamSpec ** pspec)
{
GHashTableIter iter;
gpointer key, value;
gchar **names, *name, *classename;
gboolean res;
classename = NULL;
res = FALSE;
names = g_strsplit (prop_name, "::", 2);
if (names[1] != NULL) {
classename = names[0];
name = names[1];
} else
name = names[0];
g_hash_table_iter_init (&iter, self->priv->children_props);
while (g_hash_table_iter_next (&iter, &key, &value)) {
if (g_strcmp0 (G_PARAM_SPEC (key)->name, name) == 0) {
ChildPropHandler *handler = (ChildPropHandler *) value;
if (classename == NULL ||
g_strcmp0 (G_OBJECT_TYPE_NAME (G_OBJECT (handler->child)),
classename) == 0 ||
g_strcmp0 (g_type_name (G_PARAM_SPEC (key)->owner_type),
classename) == 0) {
GST_DEBUG_OBJECT (self, "The %s property from %s has been found", name,
classename);
if (child)
*child = gst_object_ref (handler->child);
if (pspec)
*pspec = g_param_spec_ref (key);
res = TRUE;
break;
}
}
}
g_strfreev (names);
return res;
}
static GParamSpec **
default_list_children_properties (GESTimelineElement * self,
guint * n_properties)
{
GParamSpec **pspec, *spec;
GHashTableIter iter;
gpointer key, value;
guint i = 0;
*n_properties = g_hash_table_size (self->priv->children_props);
pspec = g_new (GParamSpec *, *n_properties);
g_hash_table_iter_init (&iter, self->priv->children_props);
while (g_hash_table_iter_next (&iter, &key, &value)) {
spec = G_PARAM_SPEC (key);
pspec[i] = g_param_spec_ref (spec);
i++;
}
return pspec;
}
static void
_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTimelineElement *self = GES_TIMELINE_ELEMENT (object);
switch (property_id) {
case PROP_PARENT:
g_value_take_object (value, self->parent);
break;
case PROP_TIMELINE:
g_value_take_object (value, self->timeline);
break;
case PROP_START:
g_value_set_uint64 (value, self->start);
break;
case PROP_INPOINT:
g_value_set_uint64 (value, self->inpoint);
break;
case PROP_DURATION:
g_value_set_uint64 (value, self->duration);
break;
case PROP_MAX_DURATION:
g_value_set_uint64 (value, self->maxduration);
break;
case PROP_PRIORITY:
g_value_set_uint (value, self->priority);
break;
case PROP_NAME:
g_value_take_string (value, ges_timeline_element_get_name (self));
break;
case PROP_SERIALIZE:
g_value_set_boolean (value, self->priv->serialize);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, property_id, pspec);
}
}
static void
_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineElement *self = GES_TIMELINE_ELEMENT (object);
switch (property_id) {
case PROP_PARENT:
ges_timeline_element_set_parent (self, g_value_get_object (value));
break;
case PROP_TIMELINE:
ges_timeline_element_set_timeline (self, g_value_get_object (value));
break;
case PROP_START:
ges_timeline_element_set_start (self, g_value_get_uint64 (value));
break;
case PROP_INPOINT:
ges_timeline_element_set_inpoint (self, g_value_get_uint64 (value));
break;
case PROP_DURATION:
ges_timeline_element_set_duration (self, g_value_get_uint64 (value));
break;
case PROP_PRIORITY:
ges_timeline_element_set_priority (self, g_value_get_uint (value));
break;
case PROP_MAX_DURATION:
ges_timeline_element_set_max_duration (self, g_value_get_uint64 (value));
break;
case PROP_NAME:
ges_timeline_element_set_name (self, g_value_get_string (value));
break;
case PROP_SERIALIZE:
self->priv->serialize = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, property_id, pspec);
}
}
static void
ges_timeline_element_dispose (GObject * object)
{
GESTimelineElement *self = GES_TIMELINE_ELEMENT (object);
if (self->priv->children_props) {
g_hash_table_unref (self->priv->children_props);
self->priv->children_props = NULL;
}
g_clear_object (&self->priv->copied_from);
}
static void
ges_timeline_element_finalize (GObject * self)
{
GESTimelineElement *tle = GES_TIMELINE_ELEMENT (self);
g_free (tle->name);
G_OBJECT_CLASS (ges_timeline_element_parent_class)->finalize (self);
}
static void
_child_prop_handler_free (ChildPropHandler * handler)
{
g_object_freeze_notify (handler->child);
if (handler->handler_id)
g_signal_handler_disconnect (handler->child, handler->handler_id);
g_object_thaw_notify (handler->child);
gst_object_unref (handler->child);
g_slice_free (ChildPropHandler, handler);
}
static void
ges_timeline_element_init (GESTimelineElement * self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_TIMELINE_ELEMENT, GESTimelineElementPrivate);
self->priv->serialize = TRUE;
self->priv->children_props =
g_hash_table_new_full ((GHashFunc) ges_pspec_hash, ges_pspec_equal,
(GDestroyNotify) g_param_spec_unref,
(GDestroyNotify) _child_prop_handler_free);
}
static void
ges_timeline_element_class_init (GESTimelineElementClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTimelineElementPrivate));
object_class->get_property = _get_property;
object_class->set_property = _set_property;
/**
* GESTimelineElement:parent:
*
* The parent container of the object
*/
properties[PROP_PARENT] =
g_param_spec_object ("parent", "Parent",
"The parent container of the object", GES_TYPE_TIMELINE_ELEMENT,
G_PARAM_READWRITE);
/**
* GESTimelineElement:timeline:
*
* The timeline in which @element is
*/
properties[PROP_TIMELINE] =
g_param_spec_object ("timeline", "Timeline",
"The timeline the object is in", GES_TYPE_TIMELINE, G_PARAM_READWRITE);
/**
* GESTimelineElement:start:
*
* The position of the object in its container (in nanoseconds).
*/
properties[PROP_START] = g_param_spec_uint64 ("start", "Start",
"The position in the container", 0, G_MAXUINT64, 0, G_PARAM_READWRITE);
/**
* GESTimelineElement:in-point:
*
* The in-point at which this #GESTimelineElement will start outputting data
* from its contents (in nanoseconds).
*
* Ex : an in-point of 5 seconds means that the first outputted buffer will
* be the one located 5 seconds in the controlled resource.
*/
properties[PROP_INPOINT] =
g_param_spec_uint64 ("in-point", "In-point", "The in-point", 0,
G_MAXUINT64, 0, G_PARAM_READWRITE);
/**
* GESTimelineElement:duration:
*
* The duration (in nanoseconds) which will be used in the container
*/
properties[PROP_DURATION] =
g_param_spec_uint64 ("duration", "Duration", "The duration to use", 0,
G_MAXUINT64, GST_CLOCK_TIME_NONE, G_PARAM_READWRITE);
/**
* GESTimelineElement:max-duration:
*
* The maximum duration (in nanoseconds) of the #GESTimelineElement.
*/
properties[PROP_MAX_DURATION] =
g_param_spec_uint64 ("max-duration", "Maximum duration",
"The maximum duration of the object", 0, G_MAXUINT64, GST_CLOCK_TIME_NONE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
/**
* GESTimelineElement:priority:
*
* The priority of the object.
*
* Setting GESTimelineElement priorities is deprecated
* as all priority management is done by GES itself now.
*/
properties[PROP_PRIORITY] = g_param_spec_uint ("priority", "Priority",
"The priority of the object", 0, G_MAXUINT, 0, G_PARAM_READWRITE);
/**
* GESTimelineElement:name:
*
* The name of the object
*/
properties[PROP_NAME] =
g_param_spec_string ("name", "Name", "The name of the timeline object",
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
/**
* GESTimelineElement:serialize:
*
* Whether the element should be serialized.
*/
properties[PROP_SERIALIZE] = g_param_spec_boolean ("serialize", "Serialize",
"Whether the element should be serialized", TRUE,
G_PARAM_READWRITE | GES_PARAM_NO_SERIALIZATION);
g_object_class_install_properties (object_class, PROP_LAST, properties);
/**
* GESTimelineElement::deep-notify:
* @timeline_element: a #GESTtimelineElement
* @prop_object: the object that originated the signal
* @prop: the property that changed
*
* The deep notify signal is used to be notified of property changes of all
* the childs of @timeline_element
*/
ges_timeline_element_signals[DEEP_NOTIFY] =
g_signal_new ("deep-notify", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED |
G_SIGNAL_NO_HOOKS, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 2, G_TYPE_OBJECT, G_TYPE_PARAM);
object_class->dispose = ges_timeline_element_dispose;
object_class->finalize = ges_timeline_element_finalize;
klass->set_parent = NULL;
klass->set_start = NULL;
klass->set_inpoint = NULL;
klass->set_duration = NULL;
klass->set_max_duration = NULL;
klass->set_priority = NULL;
klass->ripple = NULL;
klass->ripple_end = NULL;
klass->roll_start = NULL;
klass->roll_end = NULL;
klass->trim = NULL;
klass->list_children_properties = default_list_children_properties;
klass->lookup_child = _lookup_child;
klass->set_child_property = _set_child_property;
}
static void
_set_name (GESTimelineElement * self, const gchar * wanted_name)
{
const gchar *type_name;
gchar *lowcase_type;
gint count;
GQuark q;
guint i, l;
gchar *name = NULL;
if (!object_name_counts) {
g_datalist_init (&object_name_counts);
}
q = g_type_qname (G_OBJECT_TYPE (self));
count = GPOINTER_TO_INT (g_datalist_id_get_data (&object_name_counts, q));
/* GstFooSink -> foosink<N> */
type_name = g_quark_to_string (q);
if (strncmp (type_name, "GES", 3) == 0)
type_name += 3;
lowcase_type = g_strdup (type_name);
l = strlen (lowcase_type);
for (i = 0; i < l; i++)
lowcase_type[i] = g_ascii_tolower (lowcase_type[i]);
if (wanted_name == NULL) {
/* give the 20th "uriclip" element and the first "uriclip2" (if needed in the future)
* different names */
l = strlen (type_name);
if (l > 0 && g_ascii_isdigit (type_name[l - 1])) {
name = g_strdup_printf ("%s-%d", lowcase_type, count++);
} else {
name = g_strdup_printf ("%s%d", lowcase_type, count++);
}
} else {
/* If the wanted name uses the same 'namespace' as default, make
* sure it does not badly interfere with our counting system */
if (g_str_has_prefix (wanted_name, lowcase_type)) {
guint64 tmpcount =
g_ascii_strtoull (&wanted_name[strlen (lowcase_type)], NULL, 10);
if (tmpcount > count) {
count = tmpcount + 1;
GST_DEBUG_OBJECT (self, "Using same naming %s but updated count to %i",
wanted_name, count);
} else if (tmpcount < count) {
name = g_strdup_printf ("%s%d", lowcase_type, count);
count++;
GST_DEBUG_OBJECT (self, "Name %s already allocated, giving: %s instead"
" New count is %i", wanted_name, name, count);
} else {
count++;
GST_DEBUG_OBJECT (self, "Perfect name, just bumping object count");
}
}
if (name == NULL)
name = g_strdup (wanted_name);
}
g_free (lowcase_type);
g_datalist_id_set_data (&object_name_counts, q, GINT_TO_POINTER (count));
g_free (self->name);
self->name = name;
}
/*********************************************
* API implementation *
*********************************************/
/**
* ges_timeline_element_set_parent:
* @self: a #GESTimelineElement
* @parent: new parent of self
*
* Sets the parent of @self to @parent. The parents needs to already
* own a hard reference on @self.
*
* Returns: %TRUE if @parent could be set or %FALSE when @self
* already had a parent or @self and @parent are the same.
*/
gboolean
ges_timeline_element_set_parent (GESTimelineElement * self,
GESTimelineElement * parent)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
g_return_val_if_fail (parent == NULL
|| GES_IS_TIMELINE_ELEMENT (parent), FALSE);
if (self == parent) {
GST_INFO_OBJECT (self, "Trying to add %p in itself, not a good idea!",
self);
gst_object_ref_sink (self);
gst_object_unref (self);
return FALSE;
}
GST_DEBUG_OBJECT (self, "set parent to %" GST_PTR_FORMAT, parent);
if (self->parent != NULL && parent != NULL)
goto had_parent;
if (GES_TIMELINE_ELEMENT_GET_CLASS (self)->set_parent) {
if (!GES_TIMELINE_ELEMENT_GET_CLASS (self)->set_parent (self, parent))
return FALSE;
}
self->parent = parent;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_PARENT]);
return TRUE;
/* ERROR handling */
had_parent:
{
GST_WARNING_OBJECT (self, "set parent failed, object already had a parent");
gst_object_ref_sink (self);
gst_object_unref (self);
return FALSE;
}
}
/**
* ges_timeline_element_get_parent:
* @self: a #GESTimelineElement
*
* Returns the parent of @self. This function increases the refcount
* of the parent object so you should gst_object_unref() it after usage.
*
* Returns: (transfer full) (nullable): parent of @self, this can be %NULL if
* @self has no parent. unref after usage.
*/
GESTimelineElement *
ges_timeline_element_get_parent (GESTimelineElement * self)
{
GESTimelineElement *result = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), NULL);
result = self->parent;
if (G_LIKELY (result))
gst_object_ref (result);
return result;
}
/**
* ges_timeline_element_set_timeline:
* @self: a #GESTimelineElement
* @timeline: The #GESTimeline @self is in
*
* Sets the timeline of @self to @timeline.
*
* Returns: %TRUE if @timeline could be set or %FALSE when @timeline
* already had a timeline.
*/
gboolean
ges_timeline_element_set_timeline (GESTimelineElement * self,
GESTimeline * timeline)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
g_return_val_if_fail (timeline == NULL || GES_IS_TIMELINE (timeline), FALSE);
GST_DEBUG_OBJECT (self, "set timeline to %" GST_PTR_FORMAT, timeline);
if (timeline != NULL && G_UNLIKELY (self->timeline != NULL))
goto had_timeline;
if (timeline == NULL) {
if (self->timeline) {
if (!timeline_remove_element (self->timeline, self)) {
GST_INFO_OBJECT (self, "Could not remove from"
" currently set timeline %" GST_PTR_FORMAT, self->timeline);
return FALSE;
}
}
} else {
if (!timeline_add_element (timeline, self)) {
GST_INFO_OBJECT (self, "Could not add to timeline %" GST_PTR_FORMAT,
self);
return FALSE;
}
}
self->timeline = timeline;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TIMELINE]);
return TRUE;
/* ERROR handling */
had_timeline:
{
GST_DEBUG_OBJECT (self, "set timeline failed, object already had a "
"timeline");
return FALSE;
}
}
/**
* ges_timeline_element_get_timeline:
* @self: a #GESTimelineElement
*
* Returns the timeline of @self. This function increases the refcount
* of the timeline so you should gst_object_unref() it after usage.
*
* Returns: (transfer full) (nullable): timeline of @self, this can be %NULL if
* @self has no timeline. unref after usage.
*/
GESTimeline *
ges_timeline_element_get_timeline (GESTimelineElement * self)
{
GESTimeline *result = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), NULL);
result = self->timeline;
if (G_LIKELY (result))
gst_object_ref (result);
return result;
}
/**
* ges_timeline_element_set_start:
* @self: a #GESTimelineElement
* @start: the position in #GstClockTime
*
* Set the position of the object in its containing layer.
*
* Note that if the snapping-distance property of the timeline containing
* @self is set, @self will properly snap to the edges around @start.
*/
void
ges_timeline_element_set_start (GESTimelineElement * self, GstClockTime start)
{
GESTimelineElementClass *klass;
GESTimelineElement *toplevel_container, *parent;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "current start: %" GST_TIME_FORMAT
" new start: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_START (self)), GST_TIME_ARGS (start));
toplevel_container = ges_timeline_element_get_toplevel_parent (self);
parent = self->parent;
/* FIXME This should not belong to GESTimelineElement */
if (toplevel_container &&
((gint64) (_START (toplevel_container) + start - _START (self))) < 0 &&
parent
&& GES_CONTAINER (parent)->children_control_mode == GES_CHILDREN_UPDATE) {
GST_INFO_OBJECT (self,
"Can not move the object as it would imply its "
"container to have a negative start value");
gst_object_unref (toplevel_container);
return;
}
gst_object_unref (toplevel_container);
if (klass->set_start) {
if (klass->set_start (self, start)) {
self->start = start;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_START]);
}
GST_DEBUG_OBJECT (self, "New start: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_START (self)));
return;
}
GST_WARNING_OBJECT (self, "No set_start virtual method implementation"
" on class %s. Can not set start %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (start));
}
/**
* ges_timeline_element_set_inpoint:
* @self: a #GESTimelineElement
* @inpoint: the in-point in #GstClockTime
*
* Set the in-point, that is the moment at which the @self will start
* outputting data from its contents.
*/
void
ges_timeline_element_set_inpoint (GESTimelineElement * self,
GstClockTime inpoint)
{
GESTimelineElementClass *klass;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
GST_DEBUG_OBJECT (self, "current inpoint: %" GST_TIME_FORMAT
" new inpoint: %" GST_TIME_FORMAT, GST_TIME_ARGS (inpoint),
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_INPOINT (self)));
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->set_inpoint) {
if (klass->set_inpoint (self, inpoint)) {
self->inpoint = inpoint;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_INPOINT]);
}
return;
}
GST_DEBUG_OBJECT (self, "No set_inpoint virtual method implementation"
" on class %s. Can not set inpoint %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (inpoint));
}
/**
* ges_timeline_element_set_max_duration:
* @self: a #GESTimelineElement
* @maxduration: the maximum duration in #GstClockTime
*
* Set the maximun duration of the object
*/
void
ges_timeline_element_set_max_duration (GESTimelineElement * self,
GstClockTime maxduration)
{
GESTimelineElementClass *klass;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "current duration: %" GST_TIME_FORMAT
" new duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_MAX_DURATION (self)),
GST_TIME_ARGS (maxduration));
if (klass->set_max_duration) {
if (klass->set_max_duration (self, maxduration) == FALSE)
return;
}
self->maxduration = maxduration;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MAX_DURATION]);
}
/**
* ges_timeline_element_set_duration:
* @self: a #GESTimelineElement
* @duration: the duration in #GstClockTime
*
* Set the duration of the object
*
* Note that if the timeline snap-distance property of the timeline containing
* @self is set, @self will properly snap to its neighboors.
*/
void
ges_timeline_element_set_duration (GESTimelineElement * self,
GstClockTime duration)
{
GESTimelineElementClass *klass;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "current duration: %" GST_TIME_FORMAT
" new duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_DURATION (self)),
GST_TIME_ARGS (duration));
if (klass->set_duration) {
if (klass->set_duration (self, duration)) {
self->duration = duration;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_DURATION]);
}
return;
}
GST_WARNING_OBJECT (self, "No set_duration virtual method implementation"
" on class %s. Can not set duration %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (duration));
}
/**
* ges_timeline_element_get_start:
* @self: a #GESTimelineElement
*
* Returns: The @start of @self
*/
GstClockTime
ges_timeline_element_get_start (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), GST_CLOCK_TIME_NONE);
return self->start;
}
/**
* ges_timeline_element_get_inpoint:
* @self: a #GESTimelineElement
*
* Returns: The @inpoint of @self
*/
GstClockTime
ges_timeline_element_get_inpoint (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), GST_CLOCK_TIME_NONE);
return self->inpoint;
}
/**
* ges_timeline_element_get_duration:
* @self: a #GESTimelineElement
*
* Returns: The @duration of @self
*/
GstClockTime
ges_timeline_element_get_duration (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), GST_CLOCK_TIME_NONE);
return self->duration;
}
/**
* ges_timeline_element_get_max_duration:
* @self: a #GESTimelineElement
*
* Returns: The @maxduration of @self
*/
GstClockTime
ges_timeline_element_get_max_duration (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), GST_CLOCK_TIME_NONE);
return self->maxduration;
}
/**
* ges_timeline_element_get_priority:
* @self: a #GESTimelineElement
*
* Returns: The @priority of @self
*/
guint32
ges_timeline_element_get_priority (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), 0);
return self->priority;
}
/**
* ges_timeline_element_set_priority:
* @self: a #GESTimelineElement
* @priority: the priority
*
* Sets the priority of the object within the containing layer
*
* Deprecated: All priority management is done by GES itself now.
* To set #GESEffect priorities #ges_clip_set_top_effect_index should
* be used.
*/
void
ges_timeline_element_set_priority (GESTimelineElement * self, guint32 priority)
{
GESTimelineElementClass *klass;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "current priority: %d new priority: %d",
self->priority, priority);
if (klass->set_priority) {
if (klass->set_priority (self, priority)) {
self->priority = priority;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_PRIORITY]);
}
return;
}
GST_WARNING_OBJECT (self, "No set_priority virtual method implementation"
" on class %s. Can not set priority %d", G_OBJECT_CLASS_NAME (klass),
priority);
}
/**
* ges_timeline_element_ripple:
* @self: The #GESTimelineElement to ripple.
* @start: The new start of @self in ripple mode.
*
* Edits @self in ripple mode. It allows you to modify the
* start of @self and move the following neighbours accordingly.
* This will change the overall timeline duration.
*
* Returns: %TRUE if the self as been rippled properly, %FALSE if an error
* occured
*/
gboolean
ges_timeline_element_ripple (GESTimelineElement * self, GstClockTime start)
{
GESTimelineElementClass *klass;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->ripple)
return klass->ripple (self, start);
GST_WARNING_OBJECT (self, "No ripple virtual method implementation"
" on class %s. Can not ripple to %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (start));
return FALSE;
}
/**
* ges_timeline_element_ripple_end:
* @self: The #GESTimelineElement to ripple.
* @end: The new end (start + duration) of @self in ripple mode. It will
* basically only change the duration of @self.
*
* Edits @self in ripple mode. It allows you to modify the
* duration of a @self and move the following neighbours accordingly.
* This will change the overall timeline duration.
*
* Returns: %TRUE if the self as been rippled properly, %FALSE if an error
* occured
*/
gboolean
ges_timeline_element_ripple_end (GESTimelineElement * self, GstClockTime end)
{
GESTimelineElementClass *klass;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->ripple_end) {
return klass->ripple_end (self, end);
}
GST_WARNING_OBJECT (self, "No ripple virtual method implementation"
" on class %s. Can not ripple end to %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (end));
return FALSE;
}
/**
* ges_timeline_element_roll_start:
* @self: The #GESTimelineElement to roll
* @start: The new start of @self in roll mode, it will also adapat
* the in-point of @self according
*
* Edits @self in roll mode. It allows you to modify the
* start and inpoint of a @self and "resize" (basicly change the duration
* in this case) of the previous neighbours accordingly.
* This will not change the overall timeline duration.
*
* Returns: %TRUE if the self as been roll properly, %FALSE if an error
* occured
*/
gboolean
ges_timeline_element_roll_start (GESTimelineElement * self, GstClockTime start)
{
GESTimelineElementClass *klass;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->roll_start) {
return klass->roll_start (self, start);
}
GST_WARNING_OBJECT (self, "No ripple virtual method implementation"
" on class %s. Can not roll to %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (start));
return FALSE;
}
/**
* ges_timeline_element_roll_end:
* @self: The #GESTimelineElement to roll.
* @end: The new end (start + duration) of @self in roll mode
*
* Edits @self in roll mode. It allows you to modify the
* duration of a @self and trim (basicly change the start + inpoint
* in this case) the following neighbours accordingly.
* This will not change the overall timeline duration.
*
* Returns: %TRUE if the self as been rolled properly, %FALSE if an error
* occured
*/
gboolean
ges_timeline_element_roll_end (GESTimelineElement * self, GstClockTime end)
{
GESTimelineElementClass *klass;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->roll_end)
return klass->roll_end (self, end);
GST_WARNING_OBJECT (self, "No ripple virtual method implementation"
" on class %s. Can not roll end to %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (end));
return FALSE;
}
/**
* ges_timeline_element_trim:
* @self: The #GESTimelineElement to trim.
* @start: The new start of @self in trim mode, will adapt the inpoint
* of @self accordingly
*
* Edits @self in trim mode. It allows you to modify the
* inpoint and start of @self.
* This will not change the overall timeline duration.
*
* Note that to trim the end of an self you can just set its duration. The same way
* as this method, it will take into account the snapping-distance property of the
* timeline in which @self is.
*
* Returns: %TRUE if the self as been trimmed properly, %FALSE if an error
* occured
*/
gboolean
ges_timeline_element_trim (GESTimelineElement * self, GstClockTime start)
{
GESTimelineElementClass *klass;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (klass->trim)
return klass->trim (self, start);
GST_WARNING_OBJECT (self, "No ripple virtual method implementation"
" on class %s. Can not trim to %" GST_TIME_FORMAT,
G_OBJECT_CLASS_NAME (klass), GST_TIME_ARGS (start));
return FALSE;
}
/**
* ges_timeline_element_copy:
* @self: The #GESTimelineElement to copy
* @deep: whether we want to create the elements @self contains or not
*
* Copies @self
*
* Returns: (transfer floating): The newly create #GESTimelineElement, copied from @self
*/
GESTimelineElement *
ges_timeline_element_copy (GESTimelineElement * self, gboolean deep)
{
GESAsset *asset;
GParameter *params;
GParamSpec **specs;
GESTimelineElementClass *klass;
guint n, n_specs, n_params;
GESTimelineElement *ret = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
specs = g_object_class_list_properties (G_OBJECT_GET_CLASS (self), &n_specs);
params = g_new0 (GParameter, n_specs);
n_params = 0;
for (n = 0; n < n_specs; ++n) {
/* We do not want the timeline or the name to be copied */
if (g_strcmp0 (specs[n]->name, "parent") &&
g_strcmp0 (specs[n]->name, "timeline") &&
g_strcmp0 (specs[n]->name, "name") &&
(specs[n]->flags & G_PARAM_READWRITE) == G_PARAM_READWRITE) {
params[n_params].name = g_intern_string (specs[n]->name);
g_value_init (&params[n_params].value, specs[n]->value_type);
g_object_get_property (G_OBJECT (self), specs[n]->name,
&params[n_params].value);
++n_params;
}
}
#if GLIB_CHECK_VERSION(2, 53, 1)
{
gint i;
GValue *values;
const gchar **names;
values = g_malloc0 (sizeof (GValue) * n_specs);
names = g_malloc0 (sizeof (gchar *) * n_specs);
for (i = 0; i < n_params; i++) {
values[i] = params[i].value;
names[i] = params[i].name;
}
ret =
GES_TIMELINE_ELEMENT (g_object_new_with_properties (G_OBJECT_TYPE
(self), n_params, names, values));
g_free (names);
g_free (values);
}
#else
ret = g_object_newv (G_OBJECT_TYPE (self), n_params, params);
#endif
while (n_params--)
g_value_unset (&params[n_params].value);
g_free (specs);
g_free (params);
asset = ges_extractable_get_asset (GES_EXTRACTABLE (self));
if (asset)
ges_extractable_set_asset (GES_EXTRACTABLE (ret), asset);
if (deep) {
if (klass->deep_copy)
klass->deep_copy (self, ret);
else
GST_WARNING_OBJECT (self, "No deep_copy virtual method implementation"
" on class %s. Can not finish the copy", G_OBJECT_CLASS_NAME (klass));
}
if (deep) {
ret->priv->copied_from = gst_object_ref (self);
}
return ret;
}
/**
* ges_timeline_element_get_toplevel_parent:
* @self: The #GESTimelineElement to get the toplevel parent from
*
* Gets the toplevel #GESTimelineElement controlling @self
*
* Returns: (transfer full): The toplevel controlling parent of @self
*/
GESTimelineElement *
ges_timeline_element_get_toplevel_parent (GESTimelineElement * self)
{
GESTimelineElement *toplevel = self;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), NULL);
while (GES_TIMELINE_ELEMENT_PARENT (toplevel))
toplevel = GES_TIMELINE_ELEMENT_PARENT (toplevel);
return gst_object_ref (toplevel);
}
/**
* ges_timeline_element_get_name:
* @self: a #GESTimelineElement
*
* Returns a copy of the name of @self.
* Caller should g_free() the return value after usage.
*
* Returns: (transfer full): The name of @self
*/
gchar *
ges_timeline_element_get_name (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), NULL);
return g_strdup (self->name);
}
/**
* ges_timeline_element_set_name:
* @self: a #GESTimelineElement
* @name: (allow-none): The name @self should take (if avalaible<)
*
* Sets the name of object, or gives @self a guaranteed unique name (if name is NULL).
* This function makes a copy of the provided name, so the caller retains ownership
* of the name it sent.
*/
gboolean
ges_timeline_element_set_name (GESTimelineElement * self, const gchar * name)
{
gboolean result = TRUE, readd_to_timeline = FALSE;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
if (name != NULL && !g_strcmp0 (name, self->name)) {
GST_DEBUG_OBJECT (self, "Same name!");
return TRUE;
}
/* parented objects cannot be renamed */
if (self->timeline != NULL && name) {
GESTimelineElement *tmp = ges_timeline_get_element (self->timeline, name);
if (tmp) {
gst_object_unref (tmp);
goto had_timeline;
}
timeline_remove_element (self->timeline, self);
readd_to_timeline = TRUE;
}
_set_name (self, name);
if (readd_to_timeline)
timeline_add_element (self->timeline, self);
return result;
/* error */
had_timeline:
{
GST_WARNING ("Object %s already in a timeline can't be renamed to %s",
self->name, name);
return FALSE;
}
}
static gboolean
emit_deep_notify_in_idle (EmitDeepNotifyInIdleData * data)
{
g_signal_emit (data->self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
data->child, data->arg);
gst_object_unref (data->child);
g_param_spec_unref (data->arg);
gst_object_unref (data->self);
g_slice_free (EmitDeepNotifyInIdleData, data);
return FALSE;
}
static void
child_prop_changed_cb (GObject * child, GParamSpec * arg
G_GNUC_UNUSED, GESTimelineElement * self)
{
EmitDeepNotifyInIdleData *data;
/* Emit "deep-notify" right away if in main thread */
if (g_main_context_acquire (g_main_context_default ())) {
g_main_context_release (g_main_context_default ());
g_signal_emit (self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
child, arg);
return;
}
data = g_slice_new (EmitDeepNotifyInIdleData);
data->child = gst_object_ref (child);
data->arg = g_param_spec_ref (arg);
data->self = gst_object_ref (self);
g_idle_add ((GSourceFunc) emit_deep_notify_in_idle, data);
}
gboolean
ges_timeline_element_add_child_property (GESTimelineElement * self,
GParamSpec * pspec, GObject * child)
{
gchar *signame;
ChildPropHandler *handler;
if (g_hash_table_contains (self->priv->children_props, pspec)) {
GST_INFO_OBJECT (self, "Child property already exists: %s", pspec->name);
return FALSE;
}
GST_DEBUG_OBJECT (self, "Adding child property: %" GST_PTR_FORMAT "::%s",
child, pspec->name);
signame = g_strconcat ("notify::", pspec->name, NULL);
handler = (ChildPropHandler *) g_slice_new0 (ChildPropHandler);
handler->child = gst_object_ref (child);
handler->handler_id =
g_signal_connect (child, signame, G_CALLBACK (child_prop_changed_cb),
self);
g_hash_table_insert (self->priv->children_props, g_param_spec_ref (pspec),
handler);
g_free (signame);
return TRUE;
}
/**
* ges_timeline_element_get_child_property_by_pspec:
* @self: 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 @self.
*/
void
ges_timeline_element_get_child_property_by_pspec (GESTimelineElement * self,
GParamSpec * pspec, GValue * value)
{
ChildPropHandler *handler;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
handler = g_hash_table_lookup (self->priv->children_props, pspec);
if (!handler)
goto not_found;
g_object_get_property (G_OBJECT (handler->child), pspec->name, value);
return;
not_found:
{
GST_ERROR_OBJECT (self, "The %s property doesn't exist", pspec->name);
return;
}
}
/**
* ges_timeline_element_set_child_property_by_pspec:
* @self: a #GESTimelineElement
* @pspec: The #GParamSpec that specifies the property you want to set
* @value: the value
*
* Sets a property of a child of @self.
*/
void
ges_timeline_element_set_child_property_by_pspec (GESTimelineElement * self,
GParamSpec * pspec, GValue * value)
{
ChildPropHandler *handler;
GESTimelineElementClass *klass;
g_return_if_fail (GES_IS_TRACK_ELEMENT (self));
handler = g_hash_table_lookup (self->priv->children_props, pspec);
if (!handler)
goto not_found;
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
g_assert (klass->set_child_property);
klass->set_child_property (self, handler->child, pspec, value);
return;
not_found:
{
GST_ERROR ("The %s property doesn't exist", pspec->name);
return;
}
}
/**
* ges_timeline_element_set_child_property:
* @self: The origin #GESTimelineElement
* @property_name: The name of the property
* @value: the value
*
* Sets a property of a child of @self
*
* Note that #ges_timeline_element_set_child_property is really
* intended for language bindings, #ges_timeline_element_set_child_properties
* is much more convenient for C programming.
*
* Returns: %TRUE if the property was set, %FALSE otherwize
*/
gboolean
ges_timeline_element_set_child_property (GESTimelineElement * self,
const gchar * property_name, GValue * value)
{
GParamSpec *pspec;
GESTimelineElementClass *klass;
GObject *child;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
if (!ges_timeline_element_lookup_child (self, property_name, &child, &pspec))
goto not_found;
klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
g_assert (klass->set_child_property);
klass->set_child_property (self, child, pspec, value);
gst_object_unref (child);
g_param_spec_unref (pspec);
return TRUE;
not_found:
{
GST_WARNING_OBJECT (self, "The %s property doesn't exist", property_name);
return FALSE;
}
}
/**
* ges_timeline_element_get_child_property:
* @self: The origin #GESTimelineElement
* @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_timeline_element_get_child_property is really
* intended for language bindings, #ges_timeline_element_get_child_properties
* is much more convenient for C programming.
*
* Returns: %TRUE if the property was found, %FALSE otherwize
*/
gboolean
ges_timeline_element_get_child_property (GESTimelineElement * self,
const gchar * property_name, GValue * value)
{
GParamSpec *pspec;
GObject *child;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
if (!ges_timeline_element_lookup_child (self, property_name, &child, &pspec))
goto not_found;
if (G_VALUE_TYPE (value) == G_TYPE_INVALID)
g_value_init (value, pspec->value_type);
g_object_get_property (child, pspec->name, value);
gst_object_unref (child);
g_param_spec_unref (pspec);
return TRUE;
not_found:
{
GST_WARNING_OBJECT (self, "The %s property doesn't exist", property_name);
return FALSE;
}
}
/**
* ges_timeline_element_lookup_child:
* @self: 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.
* @child: (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.
*/
gboolean
ges_timeline_element_lookup_child (GESTimelineElement * self,
const gchar * prop_name, GObject ** child, GParamSpec ** pspec)
{
GESTimelineElementClass *class;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
class = GES_TIMELINE_ELEMENT_GET_CLASS (self);
g_return_val_if_fail (class->lookup_child, FALSE);
return class->lookup_child (self, prop_name, child, pspec);
}
/**
* ges_timeline_element_set_child_property_valist:
* @self: The #GESTimelineElement 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 @self. 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.
*/
void
ges_timeline_element_set_child_property_valist (GESTimelineElement * self,
const gchar * first_property_name, va_list var_args)
{
const gchar *name;
GParamSpec *pspec;
GObject *child;
gchar *error = NULL;
GValue value = { 0, };
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
name = first_property_name;
/* Note: This part is in big part copied from the gst_child_object_set_valist
* method. */
/* iterate over pairs */
while (name) {
if (!ges_timeline_element_lookup_child (self, name, &child, &pspec))
goto not_found;
G_VALUE_COLLECT_INIT (&value, pspec->value_type, var_args,
G_VALUE_NOCOPY_CONTENTS, &error);
if (error)
goto cant_copy;
g_object_set_property (child, pspec->name, &value);
gst_object_unref (child);
g_param_spec_unref (pspec);
g_value_unset (&value);
name = va_arg (var_args, gchar *);
}
return;
not_found:
{
GST_WARNING_OBJECT (self, "No property %s in OBJECT\n", name);
return;
}
cant_copy:
{
GST_WARNING_OBJECT (self, "error copying value %s in %p: %s", pspec->name,
self, error);
gst_object_unref (child);
g_param_spec_unref (pspec);
g_value_unset (&value);
return;
}
}
/**
* ges_timeline_element_set_child_properties:
* @self: The #GESTimelineElement 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 @self. 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.
*/
void
ges_timeline_element_set_child_properties (GESTimelineElement * self,
const gchar * first_property_name, ...)
{
va_list var_args;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
va_start (var_args, first_property_name);
ges_timeline_element_set_child_property_valist (self, first_property_name,
var_args);
va_end (var_args);
}
/**
* ges_timeline_element_get_child_property_valist:
* @self: The #GESTimelineElement 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 @self. 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.
*/
void
ges_timeline_element_get_child_property_valist (GESTimelineElement * self,
const gchar * first_property_name, va_list var_args)
{
const gchar *name;
gchar *error = NULL;
GValue value = { 0, };
GParamSpec *pspec;
GObject *child;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
name = first_property_name;
/* This part is in big part copied from the gst_child_object_get_valist method */
while (name) {
if (!ges_timeline_element_lookup_child (self, name, &child, &pspec))
goto not_found;
g_value_init (&value, pspec->value_type);
g_object_get_property (child, pspec->name, &value);
gst_object_unref (child);
g_param_spec_unref (pspec);
G_VALUE_LCOPY (&value, var_args, 0, &error);
if (error)
goto cant_copy;
g_value_unset (&value);
name = va_arg (var_args, gchar *);
}
return;
not_found:
{
GST_WARNING_OBJECT (self, "no child property %s", name);
return;
}
cant_copy:
{
GST_WARNING_OBJECT (self, "error copying value %s in %s", pspec->name,
error);
g_value_unset (&value);
return;
}
}
static gint
compare_gparamspec (GParamSpec ** a, GParamSpec ** b, gpointer udata)
{
return g_strcmp0 ((*a)->name, (*b)->name);
}
/**
* ges_timeline_element_list_children_properties:
* @self: The #GESTimelineElement 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 @self.
*
* Returns: (transfer full) (array length=n_properties): an array of #GParamSpec* which should be freed after use or
* %NULL if something went wrong
*/
GParamSpec **
ges_timeline_element_list_children_properties (GESTimelineElement * self,
guint * n_properties)
{
GParamSpec **ret;
GESTimelineElementClass *class;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), NULL);
class = GES_TIMELINE_ELEMENT_GET_CLASS (self);
if (!class->list_children_properties) {
GST_INFO_OBJECT (self, "No %s->list_children_properties implementation",
G_OBJECT_TYPE_NAME (self));
*n_properties = 0;
return NULL;
}
ret = class->list_children_properties (self, n_properties);
g_qsort_with_data (ret, *n_properties, sizeof (GParamSpec *),
(GCompareDataFunc) compare_gparamspec, NULL);
return ret;
}
/**
* ges_timeline_element_get_child_properties:
* @self: The origin #GESTimelineElement
* @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 @self.
*/
void
ges_timeline_element_get_child_properties (GESTimelineElement * self,
const gchar * first_property_name, ...)
{
va_list var_args;
g_return_if_fail (GES_IS_TIMELINE_ELEMENT (self));
va_start (var_args, first_property_name);
ges_timeline_element_get_child_property_valist (self, first_property_name,
var_args);
va_end (var_args);
}
gboolean
ges_timeline_element_remove_child_property (GESTimelineElement * self,
GParamSpec * pspec)
{
return g_hash_table_remove (self->priv->children_props, pspec);
}
/**
* ges_timeline_element_get_track_types:
* @self: A #GESTimelineElement
*
* Gets all the TrackTypes @self will interact with
*
* Since: 1.6.0
*/
GESTrackType
ges_timeline_element_get_track_types (GESTimelineElement * self)
{
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), 0);
g_return_val_if_fail (GES_TIMELINE_ELEMENT_GET_CLASS (self)->get_track_types,
0);
return GES_TIMELINE_ELEMENT_GET_CLASS (self)->get_track_types (self);
}
/**
* ges_timeline_element_paste:
* @self: The #GESTimelineElement to paste
* @paste_position: The position in the timeline the element should
* be copied to, meaning it will become the start of @self
*
* Paste @self inside the timeline. @self must have been created
* using ges_timeline_element_copy with recurse=TRUE set,
* otherwise it will fail.
*
* Returns: (transfer none): Paste @self copying the element
*
* Since: 1.6.0
*/
GESTimelineElement *
ges_timeline_element_paste (GESTimelineElement * self,
GstClockTime paste_position)
{
GESTimelineElement *res;
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
if (!self->priv->copied_from) {
GST_ERROR_OBJECT (self, "Is not being 'deeply' copied!");
return NULL;
}
if (!GES_TIMELINE_ELEMENT_GET_CLASS (self)->paste) {
GST_ERROR_OBJECT (self, "No paste vmethod implemented");
return NULL;
}
res = GES_TIMELINE_ELEMENT_GET_CLASS (self)->paste (self,
self->priv->copied_from, paste_position);
g_clear_object (&self->priv->copied_from);
return g_object_ref (res);
}
/* Internal */
gdouble
ges_timeline_element_get_media_duration_factor (GESTimelineElement * self)
{
gdouble media_duration_factor;
GESEffectClass *class;
GList *props;
media_duration_factor = 1.0;
class = GES_EFFECT_CLASS (g_type_class_ref (GES_TYPE_EFFECT));
for (props = class->rate_properties; props != NULL; props = props->next) {
GObject *child;
GParamSpec *pspec;
if (ges_timeline_element_lookup_child (self, props->data, &child, &pspec)) {
if (G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_FLOAT) {
gfloat rate_change;
g_object_get (child, pspec->name, &rate_change, NULL);
media_duration_factor *= rate_change;
} else if (G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_DOUBLE) {
gdouble rate_change;
g_object_get (child, pspec->name, &rate_change, NULL);
media_duration_factor *= rate_change;
} else {
GST_WARNING_OBJECT (self,
"Rate property %s in child %" GST_PTR_FORMAT
" is of unsupported type %s", pspec->name, child,
G_VALUE_TYPE_NAME (pspec->value_type));
}
gst_object_unref (child);
g_param_spec_unref (pspec);
GST_DEBUG_OBJECT (self,
"Added rate changing property %s, set to value %lf",
(const char *) props->data, media_duration_factor);
}
}
g_type_class_unref (class);
return media_duration_factor;
}
/* Internal */
GESTimelineElement *
ges_timeline_element_get_copied_from (GESTimelineElement * self)
{
GESTimelineElement *copied_from = self->priv->copied_from;
self->priv->copied_from = NULL;
return copied_from;
}