/home/marsyas/marsyas/src/marsyas/MidiInput.cpp

/*
 ** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca>
 **  
 ** 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.
 */

   
#include "MidiInput.h"

#ifdef MARSYAS_MIDIIO
#include "RtMidi.h"
#endif 


using std::ostringstream;
using namespace Marsyas;

MidiInput::MidiInput(mrs_string name):MarSystem("MidiInput",name)
{
  initMidi = false;
#ifdef MARSYAS_MIDIIO
    midiin = NULL;
#endif 
    addControls();
}

MidiInput::MidiInput(const MidiInput& a): MarSystem(a) 
{
  ctrl_byte1_ = getctrl("mrs_natural/byte1");
  ctrl_byte2_ = getctrl("mrs_natural/byte2");
  ctrl_byte3_ = getctrl("mrs_natural/byte3");
}

MidiInput::~MidiInput()
{
#ifdef MARSYAS_MIDIIO
    delete midiin;
#endif
}

MarSystem* MidiInput::clone() const 
{
    return new MidiInput(*this);
}

void MidiInput::addControls()
{
    addctrl("mrs_natural/port", 0);
    addctrl("mrs_bool/virtualPort", false);
    addctrl("mrs_bool/initmidi", false);
    setctrlState("mrs_bool/initmidi", true);
    addctrl("mrs_natural/byte1", 0, ctrl_byte1_);
    addctrl("mrs_natural/byte2", 0, ctrl_byte2_);
    addctrl("mrs_natural/byte3", 0, ctrl_byte3_);
}

void MidiInput::myUpdate(MarControlPtr sender)
{
    MRSDIAG("MidiInput.cpp - MidiInput:myUpdate");
    MarSystem::myUpdate(sender);

#ifdef MARSYAS_MIDIIO
    midiin = NULL;

    initMidi= getctrl("mrs_bool/initmidi")->to<mrs_bool>();
    initMidi = !initMidi;

    virtualPort = getctrl("mrs_bool/virtualPort")->to<mrs_bool>();

    if (!initMidi){
        try { 
            midiin = new RtMidiIn();
        } 
        catch (RtError3 &error) { 
            error.printMessage();
            return;
        }
        midiin->setCallback(&MidiInput::mycallback, this);
        midiin->ignoreTypes(false, false, false); 
        setctrl("mrs_bool/initmidi", false);

        if (virtualPort)
      {
            try { 
          midiin->openVirtualPort("MarsyasInput");
            }
            catch (RtError3 &error) 
          {
                error.printMessage();
                return;
          } 
      }
        else
      {
            try { 
          midiin->openPort(getctrl("mrs_natural/port")->to<mrs_natural>());
            }
            catch (RtError3 &error) 
          {
                error.printMessage();
                return;
          } 
      }
    }
    
#endif
}

void MidiInput::mycallback(double deltatime, std::vector< unsigned char > * message, void *userData) 
{
    // FIXME Unused parameter
    (void) deltatime;
  int nBytes = 0;
  nBytes = message->size();
  
  MidiInput* mythis = (MidiInput*) userData;
  
  if (nBytes > 0) 
    {
      if (nBytes > 2) 
        {
            mythis->byte3 = message->at(2); 
            mythis->byte2 = message->at(1);
            mythis->byte1 = message->at(0);
        }
      
    }
}

void MidiInput::myProcess(realvec& in, realvec& out)
{
    mrs_natural t,o;
  // just pass data through 
  for (o=0; o < inObservations_; o++)
    for (t = 0; t < inSamples_; t++)
      {
    out(o,t) =  in(o,t);
      }
  ctrl_byte1_->setValue((mrs_natural)byte1, NOUPDATE);
  ctrl_byte2_->setValue((mrs_natural)byte2, NOUPDATE);
  ctrl_byte3_->setValue((mrs_natural)byte3, NOUPDATE);
  
}

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