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/root/src/subsynth/syn/Module/OperatorModule.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: OperatorModule.h,v $
 * Date modified: $Date: 2002/04/15 07:28:46 $
 * Version:       $Revision: 1.7 $
 * -----------------------------------------------------------------
 *
 ****************** <SYN heading END do not edit this line> ******************/
/* Generated by Together */

#ifndef OPERATORMODULE_H
#define OPERATORMODULE_H

#include "syn/Core/SampleBufferQueue.h"
#include "syn/Core/SampleBufferQueuePtr.h"
#include "syn/Core/Module.h"

namespace syn
{
   template <typename OPERATOR>
   class OperatorModule : public Module
   {
   public:
      OperatorModule() : Module(), mConstant( 0 )
      {
         mReadBuf[0] = NULL;
         mReadBuf[1] = NULL;
      
         // terminal setup
         mMonoAudioInput[0] = this->createInput( "mono audio0" );
         mMonoAudioInput[1] = this->createInput( "mono audio1" );
         mMonoAudioOutput = this->createOutput( "mono audio" );
      }

      virtual ~OperatorModule() {};
      virtual void update();
      virtual bool open() { return true; }
      virtual bool isOpen() { return true; }
      virtual void close() {}
      
   public:

      virtual Module* clone() const
      {
         OperatorModule* mod = new OperatorModule;
         mod->setConstant( this->constant() );
         return mod;
      }

      void setConstant( float constant )
      {
         mConstant = constant;
      }

      float constant() const { return mConstant; }

      virtual void getParam( const std::string& key, MultivariateType& value )
      {
         if (key == "constant")
            value.setValue( this->constant() );
      }

      virtual void setParam( const std::string& key, const MultivariateType& value )
      {
         if (key == "constant")
            this->setConstant( value.getValue( float() ) );
      }
      
   private:

      TerminalPtr mMonoAudioOutput;
      TerminalPtr mMonoAudioInput[2];
      SampleBuffer1f* mReadBuf[2];
      unsigned int mReadBufIt[2];
      float mConstant;
   };
   
   typedef OperatorModule<Math::ADDEQUAL> AddModule;

   typedef OperatorModule<Math::MULTEQUAL> MultModule;
   
   typedef OperatorModule<Math::EQUAL> CopyModule;

   template <typename OPERATOR>
   inline void OperatorModule<OPERATOR>::update()
   {
      this->setPutCount( 0 );
      
      // both connected case...
      if (!mMonoAudioInput[0]->empty() && !mMonoAudioInput[1]->empty())
      {
         if (mReadBuf[0] == NULL)
         {
            mReadBuf[0] = mMonoAudioInput[0]->front();
            mMonoAudioInput[0]->pop();
            mReadBufIt[0] = 0;
         }

         if (mReadBuf[1] == NULL)
         {
            mReadBuf[1] = mMonoAudioInput[1]->front();
            mMonoAudioInput[1]->pop();
            mReadBufIt[1] = 0;
         }
      
         // combine...
         while (mReadBufIt[0] < mReadBuf[0]->size() && mReadBufIt[1] < mReadBuf[1]->size())
         {
            OPERATOR::oper( (*(mReadBuf[0]))[mReadBufIt[0]], (*(mReadBuf[1]))[mReadBufIt[1]] ); 
            ++mReadBufIt[0];
            ++mReadBufIt[1];
         }
      
         // if buffer has been filled, then send it
         if (mReadBufIt[0] >= mReadBuf[0]->size())
         {
            mMonoAudioOutput->push( mReadBuf[0] );
            mMonoAudioOutput->setDone( false );
            this->setPutCount( mReadBuf[0]->size() );
            mReadBuf[0] = NULL;
            mReadBufIt[0] = 0;
         }
      
         // if buffer has been emptied, then put it back so we can get a new one next.
         if (mReadBufIt[1] >= mReadBuf[1]->size())
         {
            mReadBufIt[1] = 0;
            SampleBufferRepos::instance()->putback( mReadBuf[1] );
            mReadBuf[1] = NULL;
         }
         
      }

      // only one connected
      else if ( (!mMonoAudioInput[0]->empty() && mMonoAudioInput[1]->empty() && mMonoAudioInput[1]->done()) ||
                (!mMonoAudioInput[1]->empty() && mMonoAudioInput[0]->empty() && mMonoAudioInput[0]->done()) )
      {
         int use;
         if (mMonoAudioInput[0]->empty())
         {
            use = 1;
         }
         else
         {
            use = 0;
         }

         if (mReadBuf[use] == NULL)
         {
            assert( mMonoAudioInput[use]->empty() == false );
            mReadBuf[use] = mMonoAudioInput[use]->front();
            mMonoAudioInput[use]->pop();
            mReadBufIt[use] = 0;
         }
      
         while (mReadBufIt[use] < mReadBuf[use]->size())
         {
            OPERATOR::oper( (*(mReadBuf[use]))[mReadBufIt[use]], mConstant ); 
            ++mReadBufIt[use];
         }

         // if buffer has been filled, then send it
         if (mReadBufIt[use] >= mReadBuf[use]->size())
         {
            mMonoAudioOutput->push( mReadBuf[use] );
            mMonoAudioOutput->setDone( false );
            this->setPutCount( mReadBuf[use]->size() );
            mReadBuf[use] = NULL;
            mReadBufIt[use] = 0;
         }
         mMonoAudioOutput->setDone( false );
      }

      else if ( mMonoAudioInput[0]->empty() && mMonoAudioInput[0]->done() && 
                mMonoAudioInput[1]->empty() && mMonoAudioInput[1]->done() )
      {
         mMonoAudioOutput->setDone( true );
      }
   }

} // end namespace syn

#endif //OPERATORMODULE_H

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