108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
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* Copyright (C) 2011, 2012, 2013, 2014 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MT32EMU_PARTIAL_H
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#define MT32EMU_PARTIAL_H
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namespace MT32Emu {
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class Synth;
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class Part;
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class TVA;
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struct ControlROMPCMStruct;
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// A partial represents one of up to four waveform generators currently playing within a poly.
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class Partial {
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private:
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Synth *synth;
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const int debugPartialNum; // Only used for debugging
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// Number of the sample currently being rendered by produceOutput(), or 0 if no run is in progress
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// This is only kept available for debugging purposes.
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unsigned long sampleNum;
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// Actually, this is a 4-bit register but we abuse this to emulate inverted mixing.
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// Also we double the value to enable INACCURATE_SMOOTH_PAN, with respect to MoK.
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Bit32s leftPanValue, rightPanValue;
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int ownerPart; // -1 if unassigned
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int mixType;
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int structurePosition; // 0 or 1 of a structure pair
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// Only used for PCM partials
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int pcmNum;
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// FIXME: Give this a better name (e.g. pcmWaveInfo)
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PCMWaveEntry *pcmWave;
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// Final pulse width value, with velfollow applied, matching what is sent to the LA32.
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// Range: 0-255
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int pulseWidthVal;
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Poly *poly;
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Partial *pair;
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TVA *tva;
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TVP *tvp;
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TVF *tvf;
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LA32Ramp ampRamp;
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LA32Ramp cutoffModifierRamp;
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// TODO: This should be owned by PartialPair
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LA32PartialPair la32Pair;
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const PatchCache *patchCache;
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PatchCache cachebackup;
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Bit32u getAmpValue();
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Bit32u getCutoffValue();
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public:
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bool alreadyOutputed;
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Partial(Synth *synth, int debugPartialNum);
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~Partial();
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int debugGetPartialNum() const;
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unsigned long debugGetSampleNum() const;
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int getOwnerPart() const;
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const Poly *getPoly() const;
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bool isActive() const;
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void activate(int part);
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void deactivate(void);
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void startPartial(const Part *part, Poly *usePoly, const PatchCache *useCache, const MemParams::RhythmTemp *rhythmTemp, Partial *pairPartial);
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void startAbort();
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void startDecayAll();
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bool shouldReverb();
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bool hasRingModulatingSlave() const;
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bool isRingModulatingSlave() const;
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bool isPCM() const;
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const ControlROMPCMStruct *getControlROMPCMStruct() const;
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Synth *getSynth() const;
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TVA *getTVA() const;
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void backupCache(const PatchCache &cache);
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// Returns true only if data written to buffer
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// This function (unlike the one below it) returns processed stereo samples
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// made from combining this single partial with its pair, if it has one.
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bool produceOutput(Sample *leftBuf, Sample *rightBuf, unsigned long length);
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};
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}
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#endif
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