static gboolean
gst_gdk_pixbuf_overlay_start (GstBaseTransform * trans)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (trans);
GError *err = NULL;
if (overlay->location != NULL) {
if (!gst_gdk_pixbuf_overlay_load_image (overlay, &err))
goto error_loading_image;
gst_base_transform_set_passthrough (trans, FALSE);
} else {
GST_WARNING_OBJECT (overlay, "no image location set, doing nothing");
gst_base_transform_set_passthrough (trans, TRUE);
}
return TRUE;
/* ERRORS */
error_loading_image:
{
GST_ELEMENT_ERROR (overlay, RESOURCE, OPEN_READ,
("Could not load overlay image."), ("%s", err->message));
g_error_free (err);
return FALSE;
}
}
void
gst_gdk_pixbuf_overlay_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstGdkPixbufOverlay *overlay = GST_GDK_PIXBUF_OVERLAY (object);
GST_OBJECT_LOCK (overlay);
switch (property_id) {
case PROP_LOCATION:{
GError *err = NULL;
g_free (overlay->location);
overlay->location = g_value_dup_string (value);
if (!gst_gdk_pixbuf_overlay_load_image (overlay, &err)) {
GST_ERROR_OBJECT (overlay, "Could not load overlay image: %s",
err->message);
g_error_free (err);
}
}
break;
case PROP_OFFSET_X:
overlay->offset_x = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_OFFSET_Y:
overlay->offset_y = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_RELATIVE_X:
overlay->relative_x = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
case PROP_RELATIVE_Y:
overlay->relative_y = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
case PROP_OVERLAY_WIDTH:
overlay->overlay_width = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_OVERLAY_HEIGHT:
overlay->overlay_height = g_value_get_int (value);
overlay->update_composition = TRUE;
break;
case PROP_ALPHA:
overlay->alpha = g_value_get_double (value);
overlay->update_composition = TRUE;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
GST_OBJECT_UNLOCK (overlay);
}
