MIDIOutControl.hxx

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/*
 * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __MIDIOUTCONTROL__
#define __MIDIOUTCONTROL__

#include "MIDIEnums.hxx"
#include "Array.hxx"
#include "MIDIOut.hxx"
#include "MIDIIOConfig.hxx"

namespace CLAM {

class MIDIOutControl:public MIDIOut
{
        private:
                Array<InControl*> mMyInControls;

                /* keep a unique id for each message we are constructing,
                 * to make sure we have each controlled byte only once
                 */
                unsigned char mUniqId;
                
                /* buffer to store the message */
                unsigned char* mMessage;
                unsigned char  mStatusByte;

                /* buffer to store the uniq id for each controlled byte */
                unsigned char* mReceivedUniqId;
                
                /* table to map InControl ID to byte-in-message index */
                unsigned char* mControlIdToMsgByteId;

                /* size of the midi message in bytes */
                unsigned char mMessageSize;

                /* number of bytes in the message that are controlled, and the
                 * number of of those that have been received for the current 
                 * message construction (current unique ID)
                 * (when these are equal the message has been constructed fully)
                 */
                unsigned char mControlledBytes;
                unsigned char mControlsReceived;
                
                void InitMembers(void);

                void Handle(unsigned char* msg,int size);
                
                /* callback function for each received control value */
                int DoControl(int id,TControlData val);
        public:
                MIDIOutControl();
                MIDIOutControl(const MIDIIOConfig &c);

                const char * GetClassName() const {return "MIDIOutControl";}

                bool ConcreteConfigure(const ProcessingConfig& c)
                        throw(ErrProcessingObj);
};

} // namespace CLAM

#endif // MIDIOutControl.hxx

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