Midi.H

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#ifndef MIDI_H
#define MIDI_H

#include <G3D/G3DAll.h>
#include <iostream>
using namespace std;

#ifdef WIN32
#include <windows.h>
#include <mmsystem.h>
#endif

namespace VRG3D {

#define MIDI_IN_BUFFER_SIZE      1024
#define MIDI_IN_DATA_BUFFER_SIZE  256

class MidiInDevice
{
public:
  static MidiInDevice* fromMidiDeviceName(const char *name);
  static MidiInDevice* fromMidiDeviceNumber(int number);
  static int           getNumAvailableDevices();
  static void          getAvailableDeviceName(int number, char *name);

  MidiInDevice(int number);
  virtual  ~MidiInDevice();


  bool  hasMessageWaiting();

  bool  readMessage(unsigned char **msgPtr, int *size);


  bool hasDataWaiting();

  int readData(unsigned char* &statusBytes, unsigned char* &data1Bytes, unsigned char* &data2Bytes);



  void  poll();

  void setMessage(unsigned char *msg, int size);
  void addData(unsigned char status, unsigned char data1, unsigned char data2);  

  void shutdown();

#ifdef WIN32
  bool continueCallback;
#endif

private:

#ifdef WIN32
  HMIDIIN        _handle;
  MIDIHDR        _header;
#else
  // a file descriptor
  int            _handle;
  int            _sysExMsgSize;
#endif

  // buffer filled up by the midi callback in windows and the poll 
  // routine in linux
  unsigned char  _sysExBuffer[MIDI_IN_BUFFER_SIZE];

  // buffer filled up by this class with data extracted from the
  // bytes received from the device
  unsigned char  _msg[MIDI_IN_BUFFER_SIZE];
  int            _msgSize;
  bool           _newMsgFlag;

  unsigned char  _dataStatus[MIDI_IN_DATA_BUFFER_SIZE];
  unsigned char  _data1[MIDI_IN_DATA_BUFFER_SIZE];
  unsigned char  _data2[MIDI_IN_DATA_BUFFER_SIZE];
  int            _dataSize;
  bool           _newDataFlag;
};




class MidiOutDevice
{
public:
  static MidiOutDevice*  fromMidiDeviceName(const char *name);
  static MidiOutDevice*  fromMidiDeviceNumber(int number);
  static int             getNumAvailableDevices();
  static void            getAvailableDeviceName(int number, char *name);
  
  MidiOutDevice(int number);
  virtual ~MidiOutDevice();

  void sendMessage(unsigned char* message, int size);

private:

#ifdef WIN32
  HMIDIOUT  _handle;
#else
  int _handle;
#endif
};

} // end namespace

#endif

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