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//
// Copyright 2011-2012,2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP
#define INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP
#include <uhd/transport/bounded_buffer.hpp>
#include <uhd/types/metadata.hpp>
#include <uhd/types/stream_cmd.hpp>
#include <uhd/types/time_spec.hpp>
#include <uhd/utils/noncopyable.hpp>
#include <functional>
#include <memory>
namespace uhd { namespace usrp {
/*!
* The soft time control emulates some of the
* advanced streaming capabilities of the later USRP models.
* Soft time control uses the system time to emulate
* timed transmits, timed receive commands, device time,
* and inline and async error messages.
*/
class soft_time_ctrl : uhd::noncopyable
{
public:
typedef std::shared_ptr<soft_time_ctrl> sptr;
typedef std::function<void(bool)> cb_fcn_type;
virtual ~soft_time_ctrl(void) = 0;
/*!
* Make a new soft time control.
* \param stream_on_off a function to enable/disable rx
* \return a new soft time control object
*/
static sptr make(const cb_fcn_type& stream_on_off);
//! Set the current time
virtual void set_time(const time_spec_t& time) = 0;
//! Get the current time
virtual time_spec_t get_time(void) = 0;
//! Call after the internal recv function
virtual size_t recv_post(rx_metadata_t& md, const size_t nsamps) = 0;
//! Call before the internal send function
virtual void send_pre(const tx_metadata_t& md, double& timeout) = 0;
//! Issue a stream command to receive
virtual void issue_stream_cmd(const stream_cmd_t& cmd) = 0;
//! Get access to a buffer of async metadata
virtual transport::bounded_buffer<async_metadata_t>& get_async_queue(void) = 0;
//! Get access to a buffer of inline metadata
virtual transport::bounded_buffer<rx_metadata_t>& get_inline_queue(void) = 0;
//! Stops threads before deconstruction to avoid race conditions
virtual void stop(void) = 0;
};
}} // namespace uhd::usrp
#endif /* INCLUDED_LIBUHD_USRP_USRP1_SOFT_TIME_CTRL_HPP */
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