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/root/src/subsynth/syn/Stream/OpenALAudioOStream.h

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/****************** <SYN heading BEGIN do not edit this line> *****************
 *
 * subsynth - modular audio synthesizer
 * subsynth is (C) Copyright 2001-2002 by Kevin Meinert
 *
 * Original Author: Kevin Meinert
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: OpenALAudioOStream.h,v $
 * Date modified: $Date: 2002/04/08 16:13:28 $
 * Version:       $Revision: 1.30 $
 * -----------------------------------------------------------------
 *
 ****************** <SYN heading END do not edit this line> ******************/

#ifndef SUBSYNTH_OPENAL_AUDIO_STREAM
#define SUBSYNTH_OPENAL_AUDIO_STREAM

#ifdef HAVE_VPR
# include "vpr/vpr.h"
# ifdef VPR_USE_IRIX_SPROC
   #error "VPR_USE_IRIX_SPROC: you idiot"
# endif
#endif

#include "syn/Util/AudioFormat.h"
#include "syn/Stream/AudioContext.h"
#include "syn/Stream/AudioOStream.h"

namespace syn
{
   class OpenALAudioOStream : public AudioOStream
   {
   public:
      OpenALAudioOStream();
      virtual ~OpenALAudioOStream(){}

      void setContext( syn::AudioContext& ctx )
      {
         mCtx = &ctx;
      }
   
      virtual bool open( const syn::AudioFormat& fmt );

      // is the stream open?
      virtual bool isOpen() { return mIsOpen; }

      void resizeBuffers( signed int numBuffers = 2 );

      virtual bool canAcceptMoreData()  const;

      virtual bool write( const void* const  data, signed int size );
      
      virtual int pcount() const { return mPcount; }

      virtual bool close();
      
      /* blocking call, waits until stream is done writing */
      virtual void flush();

      virtual const syn::AudioFormat& format() const 
      {      
         return mFmt;
      }

   private:
      // is the stream playing?
      bool isPlaying() const;

      std::vector<unsigned int>  mBuffers;
      unsigned int               mFormat;
      std::vector<unsigned int>  mSources;
      signed int                 mSampRate;
      bool                 mIsOpen;
      syn::AudioFormat     mFmt;
      unsigned int         mBufferHackSwitch;
      syn::AudioContext*   mCtx;
      signed int           mPcount;
   };
}


#endif

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