CassettePort.cc

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