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◆ main openmsx / src / serial / MidiOutDevice.hh
1.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#ifndef MIDIOUTDEVICE_HH
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#define MIDIOUTDEVICE_HH
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#include "Pluggable.hh"
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#include "SerialDataInterface.hh"
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#include <vector>
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namespace openmsx {
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/** Pluggable that connects an MSX MIDI out port to a host MIDI device.
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  * Implementations must override either recvByte(), if they can handle raw
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  * data, or recvMessage(), if they handle MIDI messages.
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  */
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class MidiOutDevice : public Pluggable, public SerialDataInterface
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{
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public:
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	/** The limit for the amount of data we'll put into one MIDI message.
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	  * The value of 256 comes from the data limit for a MIDIPacket in CoreMIDI.
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	  */
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	static constexpr size_t MAX_MESSAGE_SIZE = 256;
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	// Pluggable (part)
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	[[nodiscard]] zstring_view getClass() const final;
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	// SerialDataInterface (part)
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	void recvByte(uint8_t value, EmuTime time) override;
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	void setDataBits(DataBits bits) override;
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	void setStopBits(StopBits bits) override;
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	void setParityBit(bool enable, Parity parity) override;
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protected:
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	explicit MidiOutDevice() = default;
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	/** Discard any buffered partial MIDI message.
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	  */
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	void clearBuffer();
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	/** Called when a full MIDI message is ready to be sent.
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	  * Implementations that can handle raw bytes can override recvByte()
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	  * instead, in which case this method will not be called.
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	  */
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	virtual void recvMessage(
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		const std::vector<uint8_t>& message, EmuTime time);
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private:
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	std::vector<uint8_t> buffer;
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	bool isSysEx = false;
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};
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} // namespace openmsx
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#endif