giuliomoro@181: /*
giuliomoro@181:  * Midi.h
giuliomoro@181:  *
giuliomoro@181:  *  Created on: 15 Jan 2016
giuliomoro@181:  *      Author: giulio
giuliomoro@181:  */
giuliomoro@181: 
giuliomoro@181: #ifndef MIDI_H_
giuliomoro@181: #define MIDI_H_
giuliomoro@181: 
giuliomoro@181: #include <BeagleRT.h>
giuliomoro@181: #include <vector>
giuliomoro@181: 
giuliomoro@181: typedef unsigned char midi_byte_t;
giuliomoro@181: 
giuliomoro@181: class Midi {
giuliomoro@181: public:
giuliomoro@181: 	Midi();
giuliomoro@181: 	/**
giuliomoro@181: 	 * Open the specified input Midi port and start reading from it.
giuliomoro@181: 	 * @param port Midi port to open
giuliomoro@181: 	 * @return 1 on success, -1 on failure
giuliomoro@181: 	 */
giuliomoro@181: 	int readFrom(int port);
giuliomoro@181: 	/**
giuliomoro@181: 	 * Open the specified output Midi port and prepares to write to it.
giuliomoro@181: 	 * @param port Midi port to open
giuliomoro@181: 	 * @return 1 on success, -1 on failure
giuliomoro@181: 	 */
giuliomoro@181: 	int writeTo(int port);
giuliomoro@181: 
giuliomoro@181: 	/**
giuliomoro@181: 	 * Get received midi byte, one at a time.
giuliomoro@181: 	 * @return  -1 if no new byte is available, -2 on error,
giuliomoro@181: 	 * the oldest not yet retrieved midi byte otherwise
giuliomoro@181: 	*/
giuliomoro@181: 	int getInput();
giuliomoro@181: 
giuliomoro@181: 	/**
giuliomoro@181: 	 * Writes a Midi byte to the output port
giuliomoro@181: 	 * @param byte the Midi byte to write
giuliomoro@181: 	 * @return 1 on success, -1 on error
giuliomoro@181: 	 */
giuliomoro@181: 	int writeOutput(midi_byte_t byte);
giuliomoro@181: 
giuliomoro@181: 	/**
giuliomoro@181: 	 * Writes Midi bytes to the output port
giuliomoro@181: 	 * @param bytes an array of bytes to be written
giuliomoro@181: 	 * @param length number of bytes to write
giuliomoro@181: 	 * @return 1 on success, -1 on error
giuliomoro@181: 	 */
giuliomoro@181: 	int writeMidiOut(short unsigned int* bytes, unsigned int length);
giuliomoro@181: 
giuliomoro@181: 	virtual ~Midi();
giuliomoro@181: 	static void midiInputLoop();
giuliomoro@181:     static bool staticConstructed;
giuliomoro@181: 	static void staticConstructor();
giuliomoro@181: private:
giuliomoro@181: 	void readInputLoop();
giuliomoro@181: 	int outputPort;
giuliomoro@181: 	int inputPort;
giuliomoro@181: 	std::vector<midi_byte_t> inputBytes;
giuliomoro@181: 	unsigned int inputBytesWritePointer;
giuliomoro@181: 	unsigned int inputBytesReadPointer;
giuliomoro@181: 	std::vector<midi_byte_t> outputBytes;
giuliomoro@181: 	static std::vector<Midi*> objAddrs;
giuliomoro@181: 	static AuxiliaryTask midiInputTask;
giuliomoro@181: 	static AuxiliaryTask midiOutputTask;
giuliomoro@181: };
giuliomoro@181: 
giuliomoro@181: 
giuliomoro@181: #endif /* MIDI_H_ */