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//
// Copyright 2019 Ettus Research, a National Instruments Brand
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#pragma once
#include <uhd/rfnoc/node.hpp>
#include <uhdlib/rfnoc/chdr_tx_data_xport.hpp>
#include <uhdlib/rfnoc/tx_async_msg_queue.hpp>
#include <uhdlib/transport/tx_streamer_impl.hpp>
#include <string>
namespace uhd { namespace rfnoc {
/*!
* Extends the streamer_impl to be an rfnoc node so it can connect to the
* graph. Configures the streamer conversion and rate parameters with values
* received through property propagation.
*/
class rfnoc_tx_streamer : public node_t,
public transport::tx_streamer_impl<chdr_tx_data_xport>
{
using disconnect_fn_t = std::function<void(const std::string&)>;
public:
/*! Constructor
*
* \param num_ports The number of ports
* \param stream_args Arguments to aid the construction of the streamer
* \param disconnect_cb Callback function to disconnect the streamer when
* the object is destroyed
*/
rfnoc_tx_streamer(const size_t num_ports,
const uhd::stream_args_t stream_args,
disconnect_fn_t disconnect_cb);
/*! Destructor
*/
~rfnoc_tx_streamer() override;
/*! Returns a unique identifier string for this node. In every RFNoC graph,
* no two nodes cannot have the same ID. Returns a string in the form of
* "TxStreamer#0".
*
* \returns The unique ID as a string
*/
std::string get_unique_id() const override;
/*! Returns the number of input ports for this block.
*
* Always returns 0 for this block.
*
* \return noc_id The number of ports
*/
size_t get_num_input_ports() const override;
/*! Returns the number of output ports for this block.
*
* \return noc_id The number of ports
*/
size_t get_num_output_ports() const override;
/*! Returns stream args provided at creation
*
* \return stream args provided when streamer is created
*/
const uhd::stream_args_t& get_stream_args() const;
/*! Check that all streamer ports are connected to blocks
*
* Overrides node_t to ensure there are no unconnected ports.
*
* \param connected_inputs A list of input ports that are connected
* \param connected_outputs A list of output ports that are connected
* \returns true if the block can deal with this configuration
*/
bool check_topology(const std::vector<size_t>& connected_inputs,
const std::vector<size_t>& connected_outputs) override;
/*! Connects a channel to the streamer port
*
* Overrides method in tx_streamer_impl.
*
* \param channel The streamer channel to which to connect
* \param xport The transport for the specified channel
*/
void connect_channel(const size_t channel, chdr_tx_data_xport::uptr xport) override;
/*! Receive an asynchronous message from this tx stream
*
* Implementation of tx_streamer API method.
*
* \param async_metadata the metadata to be filled in
* \param timeout the timeout in seconds to wait for a message
* \return true when the async_metadata is valid, false for timeout
*/
bool recv_async_msg(uhd::async_metadata_t& async_metadata, double timeout) override;
private:
void _register_props(const size_t chan, const std::string& otw_format);
void _handle_tx_event_action(
const res_source_info& src, tx_event_action_info::sptr tx_event_action);
// Queue for async messages
tx_async_msg_queue::sptr _async_msg_queue;
// Properties
std::vector<property_t<double>> _scaling_out;
std::vector<property_t<double>> _samp_rate_out;
std::vector<property_t<double>> _tick_rate_out;
std::vector<property_t<std::string>> _type_out;
std::vector<property_t<size_t>> _mtu_out;
// Streamer unique ID
const std::string _unique_id;
// Stream args provided at construction
const uhd::stream_args_t _stream_args;
// Callback function to disconnect
const disconnect_fn_t _disconnect_cb;
};
}} // namespace uhd::rfnoc
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