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| author | Willem Jan Palenstijn | 2013-04-18 23:35:23 +0200 |
|---|---|---|
| committer | Willem Jan Palenstijn | 2013-05-08 20:40:58 +0200 |
| commit | 9c2341678ef4984bf92b3878295250faf980b066 (patch) | |
| tree | 2fb4805e05e16b9924e80c9947e6bad723b28c4b /audio/softsynth/mt32/TVF.h | |
| parent | 8172d679df5148a4a32f46074b20cb6caf91844f (diff) | |
| parent | a5f4ff36ffc386d48f2da49387a9655ce9295a4d (diff) | |
| download | scummvm-rg350-9c2341678ef4984bf92b3878295250faf980b066.tar.gz scummvm-rg350-9c2341678ef4984bf92b3878295250faf980b066.tar.bz2 scummvm-rg350-9c2341678ef4984bf92b3878295250faf980b066.zip | |
Merge branch 'master'
Diffstat (limited to 'audio/softsynth/mt32/TVF.h')
| -rw-r--r-- | audio/softsynth/mt32/TVF.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/audio/softsynth/mt32/TVF.h b/audio/softsynth/mt32/TVF.h new file mode 100644 index 0000000000..490d8de504 --- /dev/null +++ b/audio/softsynth/mt32/TVF.h @@ -0,0 +1,54 @@ +/* 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_TVF_H +#define MT32EMU_TVF_H + +namespace MT32Emu { + +class TVF { +private: + const Partial * const partial; + LA32Ramp *cutoffModifierRamp; + const TimbreParam::PartialParam *partialParam; + + Bit8u baseCutoff; + int keyTimeSubtraction; + unsigned int levelMult; + + Bit8u target; + unsigned int phase; + + void startRamp(Bit8u newTarget, Bit8u newIncrement, int newPhase); + void nextPhase(); + +public: + TVF(const Partial *partial, LA32Ramp *cutoffModifierRamp); + void reset(const TimbreParam::PartialParam *partialParam, Bit32u basePitch); + // Returns the base cutoff (without envelope modification). + // The base cutoff is calculated when reset() is called and remains static + // for the lifetime of the partial. + // Barring bugs, the number returned is confirmed accurate + // (based on specs from Mok). + Bit8u getBaseCutoff() const; + void handleInterrupt(); + void startDecay(); +}; + +} + +#endif |