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/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program 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 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MT32EMU_TVP_H
#define MT32EMU_TVP_H
namespace MT32Emu {
class TVP {
private:
const Partial * const partial;
const MemParams::System * const system_; // FIXME: Only necessary because masterTune calculation is done in the wrong place atm.
const Part *part;
const TimbreParam::PartialParam *partialParam;
const MemParams::PatchTemp *patchTemp;
int maxCounter;
int processTimerIncrement;
int counter;
Bit32u timeElapsed;
int phase;
Bit32u basePitch;
Bit32s targetPitchOffsetWithoutLFO;
Bit32s currentPitchOffset;
Bit16s lfoPitchOffset;
// In range -12 - 36
Bit8s timeKeyfollowSubtraction;
Bit16s pitchOffsetChangePerBigTick;
Bit16u targetPitchOffsetReachedBigTick;
unsigned int shifts;
Bit16u pitch;
void updatePitch();
void setupPitchChange(int targetPitchOffset, Bit8u changeDuration);
void targetPitchOffsetReached();
void nextPhase();
void process();
public:
TVP(const Partial *partial);
void reset(const Part *part, const TimbreParam::PartialParam *partialParam);
Bit32u getBasePitch() const;
Bit16u nextPitch();
void startDecay();
};
}
#endif
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