recv_report.cpp

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#include <QString>
#include <QtGlobal>
#if defined(Q_OS_WIN) || defined(Q_OS_MACOS)
#include <QStyleFactory>
#endif
#include "recv_report.hpp"
#include "utils/string_view_utils.hpp"
 
RecvReportWidget::RecvReportWidget(QWidget *parent) : QProgressBar(parent){
        elapsedTimer.start();
        reset();
        QObject::connect(&timer, &QTimer::timeout, this, &RecvReportWidget::timeout);
        timer.setInterval(timeout_msec);
#if defined(Q_OS_WIN) || defined(Q_OS_MACOS)
        setStyle(QStyleFactory::create("Fusion")); //mac style progressbars have no text
#endif
}
 
void RecvReportWidget::reset(){
        reports.clear();
        timer.stop();
        setRange(0, 100);
        setValue(0);
        setFormat("No receiver report");
        setTextVisible(true);
        setToolTip("No RTCP receiver report. Note that this does not necessarily mean"
                        " that the receiver isn't receiving.");
}
 
void RecvReportWidget::parseLine(std::string_view line){
        if(!sv_is_prefix(line, "Receiver of 0x"))
                return;
 
        auto tmp = std::string(line);
        int ssrc = 0;
        int rtt = 0;
        float loss = 0;
        int packets;
        sscanf(tmp.c_str(), "Receiver of 0x%08x reports RTT=%d usec, loss %f%% (out of %d)", &ssrc, &rtt, &loss, &packets);
 
        RecvReport report;
        report.total = packets;
        report.lost = packets * (loss / 100.f);
        report.rtt_usec = rtt;
        
        reports.insert(ssrc, report, elapsedTimer.elapsed());
        updateVal();
}
 
void RecvReportWidget::updateVal(){
        reports.remove_timed_out(timeout_msec, elapsedTimer.elapsed());
 
        int total = 0;
        int lost = 0;
 
        QString tooltip;
        for(const auto& r : reports.get()){
                total += r.item.total;
                lost += r.item.lost;
                tooltip += QString::number(r.ssrc, 16) +
                        ": RTT=" + QString::number(r.item.rtt_usec) + "us\n";
        }
 
        if(tooltip.endsWith('\n'))
                tooltip.chop(1);
 
        if(total < 1) total = 1;
 
        float loss = (static_cast<float>(lost) / total) * 100.f;
 
        setFormat("Receiver reports %p% received");
        setValue(100.f - loss);
        setToolTip(tooltip);
        timer.start();
}
 
void RecvReportWidget::timeout(){
        setValue(0);
        setFormat("Receiver report timed out");
        setToolTip("Receiver reports stopped arriving");
}