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◆ main openmsx / src / ide / IDECDROM.hh
2.8 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#ifndef IDECDROM_HH
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#define IDECDROM_HH
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#include "AbstractIDEDevice.hh"
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#include "File.hh"
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#include "MSXMotherBoard.hh"
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#include "RecordedCommand.hh"
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#include <bitset>
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#include <memory>
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#include <optional>
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namespace openmsx {
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class DeviceConfig;
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class IDECDROM;
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class CDXCommand final : public RecordedCommand
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{
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public:
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	CDXCommand(CommandController& commandController,
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	           StateChangeDistributor& stateChangeDistributor,
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	           Scheduler& scheduler, IDECDROM& cd);
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	void execute(std::span<const TclObject> tokens,
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		TclObject& result, EmuTime time) override;
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	[[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
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	void tabCompletion(std::vector<std::string>& tokens) const override;
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private:
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	IDECDROM& cd;
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};
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class IDECDROM final : public AbstractIDEDevice, public MediaProvider
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{
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public:
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	static constexpr unsigned MAX_CD = 26;
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	using CDInUse = std::bitset<MAX_CD>;
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	static std::shared_ptr<CDInUse> getDrivesInUse(MSXMotherBoard& motherBoard);
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public:
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	explicit IDECDROM(const DeviceConfig& config);
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	IDECDROM(const IDECDROM&) = delete;
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	IDECDROM(IDECDROM&&) = delete;
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	IDECDROM& operator=(const IDECDROM&) = delete;
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	IDECDROM& operator=(IDECDROM&&) = delete;
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	~IDECDROM() override;
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	void eject();
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	void insert(zstring_view filename);
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	// MediaInfoProvider
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	void getMediaInfo(TclObject& result) override;
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	void setMedia(const TclObject& info, EmuTime time) override;
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	template<typename Archive>
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	void serialize(Archive& ar, unsigned version);
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protected:
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	// AbstractIDEDevice:
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	[[nodiscard]] bool isPacketDevice() override;
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	[[nodiscard]] std::string_view getDeviceName() override;
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	void fillIdentifyBlock (AlignedBuffer& buffer) override;
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	[[nodiscard]] unsigned readBlockStart(AlignedBuffer& buffer, unsigned count) override;
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	void readEnd() override;
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	void writeBlockComplete(AlignedBuffer& buffer, unsigned count) override;
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	void executeCommand(uint8_t cmd) override;
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private:
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	// Flags for the interrupt reason register:
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	/** Bus release: 0 = normal, 1 = bus release */
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	static constexpr uint8_t REL = 0x04;
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	/** I/O direction: 0 = host->device, 1 = device->host */
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	static constexpr uint8_t I_O = 0x02;
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	/** Command/data: 0 = data, 1 = command */
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	static constexpr uint8_t C_D = 0x01;
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	/** Indicates the start of a read data transfer performed in packets.
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	  * @param count Total number of bytes to transfer.
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	  */
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	void startPacketReadTransfer(unsigned count);
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	void executePacketCommand(AlignedBuffer& packet);
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	std::string name;
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	std::optional<CDXCommand> cdxCommand; // delayed init
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	File file;
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	std::string filename;
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	unsigned byteCountLimit;
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	unsigned transferOffset;
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	unsigned senseKey;
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	bool readSectorData;
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	// Removable Media Status Notification Feature Set
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	bool remMedStatNotifEnabled;
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	bool mediaChanged;
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	std::shared_ptr<CDInUse> cdInUse;
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	friend class CDXCommand;
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	const std::string devName;
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};
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} // namespace openmsx
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#endif