DspOsc.h

/*
 *  Copyright 2009,2010,2011,2012 Reality Jockey, Ltd.
 *                 info@rjdj.me
 *                 http://rjdj.me/
 * 
 *  This file is part of ZenGarden.
 *
 *  ZenGarden is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  ZenGarden 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 Lesser General Public License for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with ZenGarden.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef _DSP_OSC_H_
#define _DSP_OSC_H_

#include "DspObject.h"

/** [osc~], [osc~ float] */
class DspOsc : public DspObject {
  
  public:
    static MessageObject *newObject(PdMessage *initMessage, PdGraph *graph);
    DspOsc(PdMessage *initMessage, PdGraph *graph); // and oscillator of default zero frequency
    ~DspOsc();
  
    static const char *getObjectLabel();
    std::string toString();
  
    void onInletConnectionUpdate(unsigned int inletIndex);
  
  private:
    static void processScalar(DspObject *dspObject, int fromIndex, int toIndex);
    void processMessage(int inletIndex, PdMessage *message);
  
    float frequency; // frequency and phase are stored as integers because they are used
    float sampleStep;
    int phase;     // in for-loops to traverse the lookup table
  
    static float *cos_table; // the cosine lookup table
    static int refCount; // a reference counter for cos_table. Now we know when to free it.
  
    #if __SSE3__
    __m128i inc; // the amount by which to increment indicies every step
    __m128i indicies; // the table lookup indicies
    #endif
};

inline const char *DspOsc::getObjectLabel() {
  return "osc~";
}

#endif // _DSP_OSC_H_