uint32_t plug_page_size; // plugin page size (number of controls)
int plugin_id; // id of current plugin
std::vector<int> plug_params; // vector to store ports that are controls
+ std::vector<int> plugins; // stores allowable plugins with index (work around MB strip PIs)
int send_page; // current send page
uint32_t send_page_size; // send page size in channels
PBD::ScopedConnection proc_connection; // for processor signal monitoring