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◆ main openmsx / src / cassette / CassettePort.cc
3.3 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#include "CassettePort.hh"
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#include "CassetteDevice.hh"
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#include "CassettePlayer.hh"
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#include "DummyCassetteDevice.hh"
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#include "HardwareConfig.hh"
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#include "MSXMotherBoard.hh"
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#include "PluggingController.hh"
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#include "serialize.hh"
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#include "checked_cast.hh"
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#include "components.hh"
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#if COMPONENT_LASERDISC
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#include "LaserdiscPlayer.hh"
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#endif
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#include <memory>
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namespace openmsx {
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// DummyCassettePort
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DummyCassettePort::DummyCassettePort(MSXMotherBoard& motherBoard)
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	: cassettePlayerCommand(
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		nullptr,
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		motherBoard.getCommandController(),
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		motherBoard.getStateChangeDistributor(),
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		motherBoard.getScheduler())
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{
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}
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void DummyCassettePort::setMotor(bool /*status*/, EmuTime /*time*/)
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{
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	// do nothing
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}
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void DummyCassettePort::cassetteOut(bool /*output*/, EmuTime /*time*/)
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{
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	// do nothing
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}
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bool DummyCassettePort::cassetteIn(EmuTime /*time*/)
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{
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	return false;
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}
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bool DummyCassettePort::lastOut() const
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{
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	return false; // not relevant
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}
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#if COMPONENT_LASERDISC
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void DummyCassettePort::setLaserdiscPlayer(LaserdiscPlayer* /* laserdisc */)
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{
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	// do nothing
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}
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#endif
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// CassettePort
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CassettePort::CassettePort(HardwareConfig& hwConf)
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	: Connector(hwConf.getMotherBoard().getPluggingController(), "cassetteport",
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	            std::make_unique<DummyCassetteDevice>())
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	, motherBoard(hwConf.getMotherBoard())
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{
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	auto player = std::make_unique<CassettePlayer>(hwConf);
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	cassettePlayer = player.get();
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	getPluggingController().registerPluggable(std::move(player));
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}
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CassettePort::~CassettePort()
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{
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	unplug(motherBoard.getCurrentTime());
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}
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void CassettePort::setMotor(bool status, EmuTime time)
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{
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	// TODO make 'click' sound
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	motorControl = status;
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	getPluggedCasDev().setMotor(status, time);
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}
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void CassettePort::cassetteOut(bool output, EmuTime time)
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{
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	lastOutput = output;
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	// leave everything to the pluggable
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	getPluggedCasDev().setSignal(output, time);
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}
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bool CassettePort::lastOut() const
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{
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	return lastOutput;
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}
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bool CassettePort::cassetteIn(EmuTime time)
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{
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	// All analog filtering is ignored for now
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	//   only important component is DC-removal
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	//   we just assume sample has no DC component
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	int16_t sample = [&]{
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	#if COMPONENT_LASERDISC
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		if (!motorControl && laserdiscPlayer) {
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			return laserdiscPlayer->readSample(time);
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		}
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	#endif
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		return getPluggedCasDev().readSample(time); // read 1 sample
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	}();
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	return sample >= 0; // comparator
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}
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#if COMPONENT_LASERDISC
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void CassettePort::setLaserdiscPlayer(LaserdiscPlayer *laserdiscPlayer_)
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{
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	laserdiscPlayer = laserdiscPlayer_;
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}
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#endif
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zstring_view CassettePort::getDescription() const
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{
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	return "MSX Cassette port";
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}
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zstring_view CassettePort::getClass() const
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{
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	return "Cassette Port";
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}
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CassetteDevice& CassettePort::getPluggedCasDev() const
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{
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	return *checked_cast<CassetteDevice*>(&getPlugged());
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}
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template<typename Archive>
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void CassettePort::serialize(Archive& ar, unsigned version)
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{
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	ar.template serializeBase<Connector>(*this);
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	// don't serialize 'lastOutput', done via MSXPPI
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	// Must come after serialization of the connector because that one
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	// potentially serializes the CassettePlayer.
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	if (ar.versionAtLeast(version, 2)) {
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		// always serialize CassettePlayer, even if it's not plugged in.
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		ar.serializeOnlyOnce("cassettePlayer", *cassettePlayer);
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	}
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}
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INSTANTIATE_SERIALIZE_METHODS(CassettePort);
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} // namespace openmsx