mirror of
https://github.com/saitohirga/WSJT-X.git
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186 lines
4.4 KiB
C++
186 lines
4.4 KiB
C++
#include "PollingTransceiver.hpp"
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#include <exception>
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#include <QObject>
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#include <QString>
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#include <QTimer>
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#include "moc_PollingTransceiver.cpp"
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namespace
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{
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unsigned const polls_to_stabilize {3};
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}
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PollingTransceiver::PollingTransceiver (int poll_interval, QObject * parent)
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: TransceiverBase {parent}
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, interval_ {poll_interval * 1000}
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, poll_timer_ {nullptr}
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, retries_ {0}
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{
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}
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void PollingTransceiver::start_timer ()
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{
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if (interval_)
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{
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if (!poll_timer_)
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{
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poll_timer_ = new QTimer {this}; // pass ownership to
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// QObject which handles
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// destruction for us
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connect (poll_timer_, &QTimer::timeout, this,
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&PollingTransceiver::handle_timeout);
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}
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poll_timer_->start (interval_);
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}
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else
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{
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stop_timer ();
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}
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}
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void PollingTransceiver::stop_timer ()
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{
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if (poll_timer_)
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{
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poll_timer_->stop ();
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}
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}
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void PollingTransceiver::do_post_start ()
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{
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start_timer ();
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if (!next_state_.online ())
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{
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// remember that we are expecting to go online
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next_state_.online (true);
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retries_ = polls_to_stabilize;
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}
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}
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void PollingTransceiver::do_post_stop ()
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{
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// not much point waiting for rig to go offline since we are ceasing
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// polls
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stop_timer ();
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}
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void PollingTransceiver::do_post_frequency (Frequency f, MODE m)
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{
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// take care not to set the expected next mode to unknown since some
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// callers use mode == unknown to signify that they do not know the
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// mode and don't care
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if (next_state_.frequency () != f || (m != UNK && next_state_.mode () != m))
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{
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// update expected state with new frequency and set poll count
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next_state_.frequency (f);
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if (m != UNK)
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{
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next_state_.mode (m);
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}
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retries_ = polls_to_stabilize;
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}
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}
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void PollingTransceiver::do_post_tx_frequency (Frequency f, MODE)
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{
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if (next_state_.tx_frequency () != f)
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{
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// update expected state with new TX frequency and set poll
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// count
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next_state_.tx_frequency (f);
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next_state_.split (f); // setting non-zero TX frequency means split
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retries_ = polls_to_stabilize;
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}
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}
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void PollingTransceiver::do_post_mode (MODE m)
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{
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// we don't ever expect mode to goto to unknown
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if (m != UNK && next_state_.mode () != m)
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{
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// update expected state with new mode and set poll count
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next_state_.mode (m);
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retries_ = polls_to_stabilize;
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}
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}
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void PollingTransceiver::do_post_ptt (bool p)
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{
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if (next_state_.ptt () != p)
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{
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// update expected state with new PTT and set poll count
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next_state_.ptt (p);
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retries_ = polls_to_stabilize;
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//retries_ = 0; // fast feedback on PTT
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}
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}
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bool PollingTransceiver::do_pre_update ()
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{
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// if we are holding off a change then withhold the signal
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if (retries_ && state () != next_state_)
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{
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return false;
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}
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return true;
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}
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void PollingTransceiver::handle_timeout ()
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{
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QString message;
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bool force_signal {false};
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// we must catch all exceptions here since we are called by Qt and
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// inform our parent of the failure via the offline() message
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try
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{
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do_poll (); // tell sub-classes to update our state
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// Signal new state if it what we expected or, hasn't become
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// what we expected after polls_to_stabilize polls. Unsolicited
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// changes will be signalled immediately unless they intervene
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// in a expected sequence where they will be delayed.
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if (retries_)
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{
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--retries_;
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if (state () == next_state_ || !retries_)
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{
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// the expected state has arrived or there are no more
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// retries
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force_signal = true;
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}
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}
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else if (state () != last_signalled_state_)
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{
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// here is the normal passive polling path where state has
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// changed asynchronously
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force_signal = true;
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}
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if (force_signal)
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{
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// reset everything, record and signal the current state
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retries_ = 0;
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next_state_ = state ();
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last_signalled_state_ = state ();
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update_complete (true);
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}
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}
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catch (std::exception const& e)
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{
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message = e.what ();
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}
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catch (...)
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{
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message = tr ("Unexpected rig error");
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}
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if (!message.isEmpty ())
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{
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offline (message);
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}
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}
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