source_node_ctrl.hpp

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//
// Copyright 2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//

#ifndef INCLUDED_LIBUHD_SOURCE_NODE_CTRL_BASE_HPP
#define INCLUDED_LIBUHD_SOURCE_NODE_CTRL_BASE_HPP

#include <uhd/rfnoc/constants.hpp>
#include <uhd/rfnoc/node_ctrl_base.hpp>
#include <uhd/types/stream_cmd.hpp>
#include <boost/thread.hpp>

namespace uhd { namespace rfnoc {

class UHD_RFNOC_API source_node_ctrl;
class source_node_ctrl : virtual public node_ctrl_base
{
public:
    /***********************************************************************
     * Types
     **********************************************************************/
    typedef boost::shared_ptr<source_node_ctrl> sptr;
    typedef std::map<size_t, boost::weak_ptr<source_node_ctrl> > node_map_t;
    typedef std::pair<size_t, boost::weak_ptr<source_node_ctrl> > node_map_pair_t;

    /***********************************************************************
     * Source block controls
     **********************************************************************/
    virtual void issue_stream_cmd(
        const uhd::stream_cmd_t& stream_cmd, const size_t chan = 0) = 0;

    size_t connect_downstream(node_ctrl_base::sptr downstream_node,
        size_t port                    = ANY_PORT,
        const uhd::device_addr_t& args = uhd::device_addr_t());

    virtual void set_rx_streamer(bool active, const size_t port);

protected:
    virtual size_t _request_output_port(
        const size_t suggested_port, const uhd::device_addr_t& args) const;


private:
    boost::mutex _output_mutex;

    void _register_downstream_node(node_ctrl_base::sptr downstream_node, size_t port);

}; /* class source_node_ctrl */

}} /* namespace uhd::rfnoc */

#endif /* INCLUDED_LIBUHD_SOURCE_NODE_CTRL_BASE_HPP */