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part.h

/* Copyright (c) 2003-2004 Various contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef MT32EMU_PART_H
#define MT32EMU_PART_H

namespace MT32Emu {

class PartialManager;
class Synth;

class Part {
private:
      // Pointers to the areas of the MT-32's memory dedicated to this part (for parts 1-8)
      MemParams::PatchTemp *patchTemp;
      TimbreParam *timbreTemp;

      // 0=Part 1, .. 7=Part 8, 8=Rhythm
      unsigned int partNum;

      bool holdpedal;

      StereoVolume volumesetting;

      PatchCache patchCache[4];

      float bend; // -1.0 .. +1.0 

      dpoly polyTable[MT32EMU_MAX_POLY];

      void abortPoly(dpoly *poly);

      static int fixKeyfollow(int srckey);
      static int fixBiaslevel(int srcpnt, int *dir);

      void setPatch(const PatchParam *patch);

protected:
      Synth *synth;
      char name[8]; // "Part 1".."Part 8", "Rhythm"
      char currentInstr[11];
      Bit32u volume;
      void backupCacheToPartials(PatchCache cache[4]);
      void cacheTimbre(PatchCache cache[4], const TimbreParam *timbre);
      void playPoly(const PatchCache cache[4], unsigned int key, int freqNum, int vel);
      const char *getName() const;

public:
      Part(Synth *synth, unsigned int usePartNum);
      virtual void playNote(unsigned int key, int vel);
      void stopNote(unsigned int key);
      void allStop();
      void setVolume(int vol);
      virtual void setPan(unsigned int midiPan);
      virtual void setBend(unsigned int midiBend);
      virtual void setModulation(unsigned int midiModulation);
      virtual void setProgram(unsigned int patchNum);
      void setHoldPedal(bool pedalval);
      void stopPedalHold();
      virtual void refresh();
      virtual void refreshTimbre(unsigned int absTimbreNum);
      void setTimbre(TimbreParam *timbre);
      virtual unsigned int getAbsTimbreNum() const;
};

class RhythmPart: public Part {
      // Pointer to the area of the MT-32's memory dedicated to rhythm
      const MemParams::RhythmTemp *rhythmTemp;

      // This caches the timbres/settings in use by the rhythm part
      PatchCache drumCache[64][4];
      StereoVolume drumPan[64];
public:
      RhythmPart(Synth *synth, unsigned int usePartNum);
      void refreshTimbre(unsigned int timbreNum);
      void refresh();
      void playNote(unsigned int key, int vel);
      unsigned int getAbsTimbreNum() const;
      void setPan(unsigned int midiPan);
      void setBend(unsigned int midiBend);
      void setModulation(unsigned int midiModulation);
      void setProgram(unsigned int patchNum);
};

}
#endif

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