mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-16 22:58:09 +00:00
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
|
|
* Copyright (C) 2011-2017 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_PARTIAL_H
|
|
#define MT32EMU_PARTIAL_H
|
|
|
|
#include "globals.h"
|
|
#include "internals.h"
|
|
#include "Types.h"
|
|
#include "Structures.h"
|
|
#include "LA32Ramp.h"
|
|
#include "LA32WaveGenerator.h"
|
|
#include "LA32FloatWaveGenerator.h"
|
|
|
|
namespace MT32Emu {
|
|
|
|
class Part;
|
|
class Poly;
|
|
class Synth;
|
|
class TVA;
|
|
class TVF;
|
|
class TVP;
|
|
struct ControlROMPCMStruct;
|
|
|
|
// A partial represents one of up to four waveform generators currently playing within a poly.
|
|
class Partial {
|
|
private:
|
|
Synth *synth;
|
|
const int partialIndex; // Index of this Partial in the global partial table
|
|
// Number of the sample currently being rendered by produceOutput(), or 0 if no run is in progress
|
|
// This is only kept available for debugging purposes.
|
|
Bit32u sampleNum;
|
|
|
|
// Actually, this is a 4-bit register but we abuse this to emulate inverted mixing.
|
|
// Also we double the value to enable INACCURATE_SMOOTH_PAN, with respect to MoK.
|
|
Bit32s leftPanValue, rightPanValue;
|
|
|
|
int ownerPart; // -1 if unassigned
|
|
int mixType;
|
|
int structurePosition; // 0 or 1 of a structure pair
|
|
|
|
// Only used for PCM partials
|
|
int pcmNum;
|
|
// FIXME: Give this a better name (e.g. pcmWaveInfo)
|
|
PCMWaveEntry *pcmWave;
|
|
|
|
// Final pulse width value, with velfollow applied, matching what is sent to the LA32.
|
|
// Range: 0-255
|
|
int pulseWidthVal;
|
|
|
|
Poly *poly;
|
|
Partial *pair;
|
|
|
|
TVA *tva;
|
|
TVP *tvp;
|
|
TVF *tvf;
|
|
|
|
LA32Ramp ampRamp;
|
|
LA32Ramp cutoffModifierRamp;
|
|
|
|
// TODO: This should be owned by PartialPair
|
|
LA32PartialPair *la32Pair;
|
|
const bool floatMode;
|
|
|
|
const PatchCache *patchCache;
|
|
PatchCache cachebackup;
|
|
|
|
Bit32u getAmpValue();
|
|
Bit32u getCutoffValue();
|
|
|
|
template <class Sample, class LA32PairImpl>
|
|
bool doProduceOutput(Sample *leftBuf, Sample *rightBuf, Bit32u length, LA32PairImpl *la32PairImpl);
|
|
bool canProduceOutput();
|
|
template <class LA32PairImpl>
|
|
bool generateNextSample(LA32PairImpl *la32PairImpl);
|
|
void produceAndMixSample(IntSample *&leftBuf, IntSample *&rightBuf, LA32IntPartialPair *la32IntPair);
|
|
void produceAndMixSample(FloatSample *&leftBuf, FloatSample *&rightBuf, LA32FloatPartialPair *la32FloatPair);
|
|
|
|
public:
|
|
bool alreadyOutputed;
|
|
|
|
Partial(Synth *synth, int debugPartialNum);
|
|
~Partial();
|
|
|
|
int debugGetPartialNum() const;
|
|
Bit32u debugGetSampleNum() const;
|
|
|
|
int getOwnerPart() const;
|
|
const Poly *getPoly() const;
|
|
bool isActive() const;
|
|
void activate(int part);
|
|
void deactivate(void);
|
|
void startPartial(const Part *part, Poly *usePoly, const PatchCache *useCache, const MemParams::RhythmTemp *rhythmTemp, Partial *pairPartial);
|
|
void startAbort();
|
|
void startDecayAll();
|
|
bool shouldReverb();
|
|
bool isRingModulatingNoMix() const;
|
|
bool hasRingModulatingSlave() const;
|
|
bool isRingModulatingSlave() const;
|
|
bool isPCM() const;
|
|
const ControlROMPCMStruct *getControlROMPCMStruct() const;
|
|
Synth *getSynth() const;
|
|
TVA *getTVA() const;
|
|
|
|
void backupCache(const PatchCache &cache);
|
|
|
|
// Returns true only if data written to buffer
|
|
// These functions produce processed stereo samples
|
|
// made from combining this single partial with its pair, if it has one.
|
|
bool produceOutput(IntSample *leftBuf, IntSample *rightBuf, Bit32u length);
|
|
bool produceOutput(FloatSample *leftBuf, FloatSample *rightBuf, Bit32u length);
|
|
}; // class Partial
|
|
|
|
} // namespace MT32Emu
|
|
|
|
#endif // #ifndef MT32EMU_PARTIAL_H
|