gxAudioGraph.h

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/*  Copyright (C) 2004  Guido Simone
 *
 *  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 GXLIB_GXAUDIOGRAPH_H
#define GXLIB_GXAUDIOGRAPH_H

#include "../gx.h"

class gxAudioFilter;
class gxAudioPin;
class gxAudioFilterVisitor;

class gxAudioGraph
{
protected:
   gxAudioGraph() { };

public:
   virtual ~gxAudioGraph() { };

   enum audio_graph_errors
   {
      DuplicateFilterName = 1000
   };
   virtual bool accept( gxAudioFilterVisitor * visitor, bool alsoVisitPins = false ) = 0;
   virtual int addFilter( gxAudioFilter * filter, const char * name) = 0;
   virtual int connectPins( gxAudioPin * outPin, gxAudioPin * inPin ) = 0;
   virtual int disconnectPin( gxAudioPin * pin ) = 0;
   virtual gxAudioFilter * findFilter( const char * name ) = 0;
   virtual int pause() = 0;
   virtual int removeFilter( gxAudioFilter * filter ) = 0;

   virtual int run() = 0;

   virtual int sendMidi( gxAudioPin * pin, midi_message_t message ) = 0;
   virtual int stop() = 0;
private:
   gxAudioGraph( const gxAudioGraph & rhs);
   gxAudioGraph & operator=( const gxAudioGraph & rhs);
};
#endif

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