bool GstUtils::get_structure_field(const Structure& structure, const Glib::ustring& fieldname, RefPtr<const Caps>& value)
{
Glib::ValueBase base;
structure.get_field(fieldname, base);
if (!GST_VALUE_HOLDS_CAPS(base.gobj()))
return false;
value = Glib::wrap(const_cast<GstCaps*>(gst_value_get_caps(base.gobj())), true);
return true;
}
ObjectNodeInfo GstUtils::parse_caps(const RefPtr<Caps>& caps)
{
Glib::ustring caps_str;
bool finish = true;
if (!caps || caps->empty())
caps_str = "EMPTY";
else if (caps->is_any())
caps_str = "ANY";
else finish = false;
if (finish)
return ObjectNodeInfo(caps_str);
ObjectNodeInfo ret;
for (guint i = 0; i < caps->size(); i++)
{
Structure structure = caps->get_structure(i);
ObjectNodeInfo obj;
for (int j = 0; j < structure.size(); j++)
{
Glib::ustring field_name = structure.get_nth_field_name(j);
Glib::ValueBase base;
structure.get_field(field_name, base);
obj.insert(field_name, ObjectNodeInfo(gst_value_serialize(base.gobj())));
}
ret.insert(structure.get_name(), obj);
}
return ret;
}