mirror of
https://github.com/TomHarte/CLK.git
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f7e13356c4
Improvements as a result: audio works in a second machine started in an existing window; there is no audio thread footprint if there is no audio.
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
#include "timer.h"
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#include "../../ClockReceiver/TimeTypes.hpp"
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#include <algorithm>
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#include <QDebug>
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Timer::Timer(QObject *parent) : QObject(parent) {}
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void Timer::startWithMachine(MachineTypes::TimedMachine *machine, std::mutex *machineMutex) {
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this->machine = machine;
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this->machineMutex = machineMutex;
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thread.start();
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thread.performAsync([this] {
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// Set up the emulation timer. Bluffer's guide: the QTimer will post an
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// event to an event loop. QThread is a thread with an event loop.
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// My class, Timer, will be wired up to receive the QTimer's events.
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timer = std::make_unique<QTimer>();
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timer->setInterval(1);
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connect(timer.get(), &QTimer::timeout, this, &Timer::tick, Qt::DirectConnection);
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timer->start();
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});
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}
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void Timer::tick() {
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const auto now = Time::nanos_now();
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const auto duration = std::min(now - lastTickNanos, int64_t(500'000'000));
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lastTickNanos = now;
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std::lock_guard lock_guard(*machineMutex);
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machine->run_for(double(duration) / 1e9);
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}
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Timer::~Timer() {
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thread.performAsync([this] {
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if(timer) {
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timer->stop();
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}
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});
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thread.stop();
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}
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