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ges/ges-timeline-transition.c: implement vtype gobject property on

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GESTimelineTransitions
This commit is contained in:
Brandon Lewis 2010-06-02 18:57:10 +02:00 committed by Edward Hervey
parent 2f18595e6e
commit 2adbd8e36c
1 changed files with 100 additions and 2 deletions
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102
ges/ges-timeline-transition.c
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@ -27,17 +27,55 @@
#include "ges-timeline-transition.h"
#include "ges-track-transition.h"
#define GES_TYPE_TIMELINE_TRANSITION_VTYPE_TYPE \
(ges_type_timeline_transition_vtype_get_type())
static GType ges_type_timeline_transition_vtype_get_type (void);
enum
{
VTYPE_CROSSFADE = 0,
};
enum
{
PROP_VTYPE = 5,
};
G_DEFINE_TYPE (GESTimelineTransition, ges_timeline_transition,
GES_TYPE_TIMELINE_OBJECT);
static GESTrackObject *ges_tl_transition_create_track_object (GESTimelineObject
*, GESTrack *);
void
ges_timeline_transition_update_vtype_internal (GESTimelineObject * self,
gint value)
{
GList *tmp;
GESTrackTransition *tr;
GESTrackObject *to;
for (tmp = g_list_first (self->trackobjects); tmp; tmp = g_list_next (tmp)) {
tr = GES_TRACK_TRANSITION (tmp->data);
to = (GESTrackObject *) tr;
if ((to->track) && (to->track->type == GES_TRACK_TYPE_VIDEO)) {
ges_track_transition_set_vtype (tr, value);
}
}
}
static void
ges_timeline_transition_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec)
{
GESTimelineTransition *self = GES_TIMELINE_TRANSITION (object);
gint value_int;
switch (property_id) {
case PROP_VTYPE:
self->vtype = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -47,7 +85,14 @@ static void
ges_timeline_transition_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineObject *self = GES_TIMELINE_OBJECT (object);
GESTimelineTransition *trself = GES_TIMELINE_TRANSITION (object);
switch (property_id) {
case PROP_VTYPE:
trself->vtype = g_value_get_enum (value);
ges_timeline_transition_update_vtype_internal (self, trself->vtype);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -76,6 +121,18 @@ ges_timeline_transition_class_init (GESTimelineTransitionClass * klass)
object_class->dispose = ges_timeline_transition_dispose;
object_class->finalize = ges_timeline_transition_finalize;
/**
* GESTimelineTransition: vtype
*
* The SMPTE wipe to use, or 0 for crossfade.
*/
g_object_class_install_property (object_class, PROP_VTYPE,
g_param_spec_enum ("vtype", "VType",
"The SMPTE video wipe to use, or 0 for crossfade",
GES_TYPE_TIMELINE_TRANSITION_VTYPE_TYPE, VTYPE_CROSSFADE,
G_PARAM_READWRITE));
timobj_class->create_track_object = ges_tl_transition_create_track_object;
timobj_class->need_fill_track = FALSE;
}
@ -106,15 +163,17 @@ ges_timeline_transition_new (gint vtype)
GESTimelineTransition *ret = g_object_new
(GES_TYPE_TIMELINE_TRANSITION, NULL);
ret->vtype = vtype;
g_object_set (ret, "vtype", (gint) vtype, NULL);
return ret;
}
static GEnumClass *smpte_enum_class = NULL;
static
static void
_ensure_smpte_enum_class ()
{
/* is there a better way to do this? */
if (!smpte_enum_class) {
GstElement *element = gst_element_factory_make ("smpte", NULL);
GstElementClass *element_class = GST_ELEMENT_GET_CLASS (element);
@ -127,6 +186,45 @@ _ensure_smpte_enum_class ()
}
/* how many types could GType type if GType could type types? */
static GType
ges_type_timeline_transition_vtype_get_type (void)
{
_ensure_smpte_enum_class ();
static GType the_type = 0;
if (!the_type) {
GEnumValue *values, *src, *dst;
gint i, n;
n = smpte_enum_class->n_values;
/* plus one for sentinel, plus another for the crossfade GEnumValue */
values = g_new0 (GEnumValue, 2 + n);
values->value = 0;
values->value_name = "Cross-fade between two sources";
values->value_nick = "crossfade";
for (i = 0, dst = (values + 1), src = smpte_enum_class->values; i < n;
i++, dst++, src++) {
dst->value = src->value;
dst->value_nick = src->value_nick;
dst->value_name = src->value_name;
}
dst->value = 0;
dst->value_nick = NULL;
dst->value_name = NULL;
the_type = g_enum_register_static ("GESTimelineTransitionVType", values);
}
return the_type;
}
GESTimelineTransition *
ges_timeline_transition_new_for_nick (char *nick)
{