Developing MIDI applications with DirectMusic

/*
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| |\/| || || |_| | |  \ \ | | | <> | | |  | || <> || |\  | 
|_|  |_||_||____/|_| /___)|_| |_||_| |_|  |_|\____/|_| \_| 

////////////////////////////////////////////////////////////////////////
  
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
Copyright (c) 2002-2003 by Carlos Jim�nez de Parga  
All rights reserved.
For any suggestion or failure report, please contact me by e-mail: 
cjimenez@servitel.es
  
///////////////////////////////////////////////////////////////////////  
Version: 1.9.1
Module : Record.h
Purpose: Defines the header implementation for the CRecord class
Created: CJP / 4-10-2002
History: CJP / 3-24-2003 
	
	  // 11-10-2002 Update

	  1. Solved problems with Midi port selection
	  
	  2. Improved built-in keyboard
		
	  3. Supervised the multithread-safe application	

	  4. Improved the interactive interface 
	  
	  5. Application restructured to the new CDirectMidi wrapper
	  
	  6. Added the Microsoft Software Synthesizer

	  7. Added keyboard support 
	  
	  8. Fixed bugs in classes design 
	  
      9. Improved playback thread using Events
	  
	  10. Guide line on the list control

	  // 6 - 10 - 2003 Update
	   
	  11. Added exception handling
	  
	  12. Included the piano keyboard control

	  13. Enhanced implicit multitask synchronization system
	  
      14. Simplified the class hierarchy 

	  15. Program structure grouped into new classes
	  
      16. Fixed bugs in calls to DirectMidi library

	  17. Program released under GNU (General Public License) terms	
	
*/

#ifndef CRECORD_H
#define CRECORD_H

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

const DWORD TOTAL_MEMORY = 10000 ;	// Maximum memory size for recording (~80KB)


class CRecord
{
	typedef struct Msg					// Structure to store midi messages
	{	
		DWORD dwMsg;			// MIDI 1.0 message
		DWORD dwTime;			// Note duration in milliseconds
	};
	
	SYSTEMTIME Start;			// Record start time
	SYSTEMTIME Current;			// Record current time
	Msg NoteArray[TOTAL_MEMORY];	// Array of messages
	DWORD nIndex,nTotal,nMsgRecorded;	// Index of the message in the array
public:	
	CRecord();
	~CRecord();
	void GetStartTime();					// Reset the recording
	void StoreMidiMsg(DWORD dwMsg);		// Store a given midi message in current time
	DWORD GetIndex();				// Get the index in the array
	DWORD GetStoredMessage();		// Get stored Midi DWORD pointed by the index	
	DWORD GetTotalMsgMemory();		// Returns the total memory allocated for recording
	void ResetIndex();				// Set the index to 0 (Start)
	void StepIndex();				// Step the index one unit
	DWORD GetTotalRecorded();		// Returns number of messages recorded
	DWORD GetTime(DWORD dwIndex);	// Returns the time of a given index
};	

#endif