gxAudioCard.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_GXAUDIOCARD_H
#define GXLIB_GXAUDIOCARD_H

#include "../util/gxThreadSafeObject.h"

#include "../gx.h"

class gxAudioClockSource;

class gxAudioCard
{
public:

   enum state_t
   {
      STATE_CLOSED,
      STATE_OPEN,
      STATE_STARTED
   };

   gxAudioCard() {}

   virtual ~gxAudioCard() {}
   virtual int write( float * samples, int sampleCount ) = 0;
   virtual bool readyToWrite() = 0;
   virtual bool lookup( const char * driverName ) = 0;
   virtual int open(int framesPerBuffer, int sampleRate) = 0;

   virtual int start( ) = 0;
   virtual int stop( ) = 0;
   virtual int close( ) = 0;
   virtual state_t getState() = 0;

   virtual bool isClockSource( gxAudioClockSource ** sourceInterface ) = 0;


private:
   gxAudioCard( const gxAudioCard & rhs);
   gxAudioCard & operator=( const gxAudioCard & rhs);
};

#endif

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