@Override
public boolean add(IElement element) {
BaseGstElement elem = (BaseGstElement) element;
synchronized (elem.ownershipLock()) {
elem.takeOwnership();
if (!gst_bin_add(ptr, element.getPointer())) {
elem.releaseOwnership();
return false;
}
}
return true;
}
@Override
public void visitSources(IElementVisitor visitor) {
if (visitor == null) return;
Pointer pIterator = gst_bin_iterate_sources(ptr);
if (pIterator == null || pIterator == Pointer.NULL) return;
boolean done = false;
PointerByReference ref = new PointerByReference();
while (!done) {
// This will increase the ref counter -- so we need to create an object
// that doesn't increase the ref counter when it's built so on dispose(),
// the ref count will be zero.
switch (IteratorResult.fromNative(gst_iterator_next(pIterator, ref))) {
case OK:
// Passing true here tells it to increase the ref count
// when building a new element from the pointer.
IElement element = Element.from(ref.getValue(), true);
boolean ret = visitor.visit(this, element);
element.unref();
done = !ret;
break;
case Resync:
gst_iterator_resync(pIterator);
break;
case Error:
case Done:
case Unknown:
done = true;
break;
default:
done = true;
break;
}
}
gst_iterator_free(pIterator);
}
@Override
public boolean remove(IElement element) {
return gst_bin_remove(ptr, element.getPointer());
}