engines/sfz/SfzSignalUnitRack.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2011 Grigor Iliev                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __LS_SFZSIGNALUNITRACK_H__
#define __LS_SFZSIGNALUNITRACK_H__

#include "../common/SignalUnitRack.h"
#include "EG.h"
#include "EGADSR.h"
#include "../common/AbstractVoice.h"
#include "../common/PulseLFO.h"
#include "../common/SawLFO.h"
#include "../common/SineLFO.h"

namespace LinuxSampler { namespace sfz {
    const int MaxUnitCount = 1000;
    const int maxEgCount = 100; // Maximum number of v2 envelope generators
    const int maxLfoCount = 100; // Maximum number of v2 LFOs
    
    class Voice;
    class SfzSignalUnitRack;
    
    class SfzSignalUnit: public SignalUnit {
        public:
            Voice* pVoice;

            SfzSignalUnit(SfzSignalUnitRack* rack);
            SfzSignalUnit(const SfzSignalUnit& Unit): SignalUnit(Unit.pRack) { Copy(Unit); }
            
            void Copy(const SfzSignalUnit& Unit) {
                pVoice = Unit.pVoice;
                
                SignalUnit::Copy(Unit);
            }
            
            double GetSampleRate();
    };
    
    template <class T>
    class EGUnit: public SfzSignalUnit {
        public:
            ::sfz::EG* pEGInfo;
            T EG;

            EGUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pEGInfo(NULL) { }
            EGUnit(const EGUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
            void operator=(const EGUnit& Unit) { Copy(Unit); }
            
            void Copy(const EGUnit& Unit) {
                pEGInfo = Unit.pEGInfo;
                
                SfzSignalUnit::Copy(Unit);
            }

            virtual bool  Active() { return EG.active(); }
            virtual float GetLevel() { return DelayStage() ? 0 : EG.getLevel(); }
            
            virtual void EnterReleaseStage() { EG.update(EG::event_release, GetSampleRate()); }
            virtual void CancelRelease() { EG.update(EG::event_cancel_release, GetSampleRate()); }
            
            virtual void Increment() {
                if (DelayStage()) return;

                SfzSignalUnit::Increment();
                if (!EG.active()) return;
        
                switch (EG.getSegmentType()) {
                    case EG::segment_lin:
                        EG.processLin();
                        break;
                    case EG::segment_exp:
                        EG.processExp();
                        break;
                    case EG::segment_end:
                        EG.getLevel();
                        break; // noop
                    case EG::segment_pow:
                        EG.processPow();
                        break;
                }
        
                if (EG.active()) {
                    EG.increment(1);
                    if (!EG.toStageEndLeft()) EG.update(EG::event_stage_end, GetSampleRate());
                }
            }
    };
    
    class EGv1Unit: public EGUnit<EGADSR> {
        public:
            int depth;
            EGv1Unit(SfzSignalUnitRack* rack): EGUnit<EGADSR>(rack), depth(0) { }
            virtual void Trigger();
    };
    
    class EGv2Unit: public EGUnit< ::LinuxSampler::sfz::EG> {
        public:
            EGv2Unit(SfzSignalUnitRack* rack): EGUnit< ::LinuxSampler::sfz::EG>(rack) { }
            virtual void Trigger();
    };
    
    class PitchEGUnit: public EGv1Unit {
        public:
            PitchEGUnit(SfzSignalUnitRack* rack): EGv1Unit(rack) { }
            virtual void Trigger();
    };
    
    class FilEGUnit: public EGv1Unit {
        public:
            FilEGUnit(SfzSignalUnitRack* rack): EGv1Unit(rack) { }
            virtual void Trigger();
    };
    
    class AbstractLfo {
        public:
            virtual float Render() = 0;
            virtual void Update(const uint16_t& ExtControlValue) = 0;
            virtual void Trigger(float Frequency, start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) = 0;
    };
    
    template <class T>
    class LfoBase: public AbstractLfo, public T {
        public:
            LfoBase(float Max): T(Max) { }
            virtual float Render() { return T::render(); }
            
            virtual void Update(const uint16_t& ExtControlValue) { T::update(ExtControlValue); }
            
            virtual void Trigger (
                float Frequency, start_level_t StartLevel, uint16_t InternalDepth,
                uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate
            ) {
                T::trigger(Frequency, StartLevel, InternalDepth, ExtControlDepth, FlipPhase, SampleRate);
            }
    };
    
    class LFOUnit: public SfzSignalUnit {
        public:
            ::sfz::LFO* pLfoInfo;
            AbstractLfo* pLFO;
            
            LFOUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pLfoInfo(NULL), pLFO(NULL) { }
            LFOUnit(const LFOUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
            void operator=(const LFOUnit& Unit) { Copy(Unit); }
            
            void Copy(const LFOUnit& Unit) {
                pLfoInfo = Unit.pLfoInfo;
                
                SfzSignalUnit::Copy(Unit);
            }
            
            virtual bool  Active() { return true; }
            virtual void  Trigger();
            virtual void  Increment();
            virtual float GetLevel() { return Level; }
    };
    
    class LFOv1Unit: public LFOUnit {
        public:
            ::sfz::LFO lfoInfo;
            LfoBase<LFOSigned> lfo;
            
            LFOv1Unit(SfzSignalUnitRack* rack): LFOUnit(rack), lfo(1200.0f) {
                pLfoInfo = &lfoInfo; pLFO = &lfo;
            }
            
            virtual void Trigger();
    };
    
    class LFOv2Unit: public LFOUnit {
        protected:
            FixedArray<AbstractLfo*> lfos;
            LfoBase<LFOSigned>                       lfo0; // triangle
            LfoBase<SineLFO<range_signed> >          lfo1; // sine
            LfoBase<PulseLFO<range_unsigned, 750> >  lfo2; // pulse 75%
            LfoBase<SquareLFO<range_signed> >        lfo3; // square
            LfoBase<PulseLFO<range_unsigned, 250> >  lfo4; // pulse 25%
            LfoBase<PulseLFO<range_unsigned, 125> >  lfo5; // pulse 12,5%
            LfoBase<SawLFO<range_unsigned, true> >   lfo6; // saw up
            LfoBase<SawLFO<range_unsigned, false> >  lfo7; // saw down
            
            
        public:
            LFOv2Unit(SfzSignalUnitRack* rack);
            
            virtual void Trigger();
    };
    
    class AmpLFOUnit: public LFOv1Unit {
        public:
            AmpLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
            
            virtual void Trigger();
    };
    
    class PitchLFOUnit: public LFOv1Unit {
        public:
            PitchLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
            
            virtual void Trigger();
    };
    
    class FilLFOUnit: public LFOv1Unit {
        public:
            FilLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
            
            virtual void Trigger();
    };
    
    
    
    class EndpointUnit : public EndpointSignalUnit {
        public:
            Voice* pVoice;

            EndpointUnit(SfzSignalUnitRack* rack);

            virtual void Trigger();

            /** The endpoint should be active until the volume EG is active. */
            virtual bool Active();
            
            virtual float GetVolume();
            virtual float GetFilterCutoff();
            virtual float GetPitch();
            virtual float GetResonance();
            virtual float GetPan();
            
            SfzSignalUnitRack* const GetRack();
            
            virtual float CalculateResonance(float res) {
                return GetResonance() + res;
            }
    };
    
    
    class SfzSignalUnitRack : public SignalUnitRack {
        private:
            EndpointUnit  suEndpoint;
            EGv1Unit      suVolEG;
            FilEGUnit     suFilEG;
            PitchEGUnit   suPitchEG;
            
            AmpLFOUnit   suAmpLFO;
            PitchLFOUnit suPitchLFO;
            FilLFOUnit   suFilLFO;
            
            FixedArray<EGv2Unit*> EGs;
            
            // used for optimization - contains only the ones that are modulating volume
            FixedArray<EGv2Unit*> volEGs;
            
            // used for optimization - contains only the ones that are modulating pitch
            FixedArray<EGv2Unit*> pitchEGs;
            
            
            FixedArray<LFOv2Unit*> LFOs;
            
            // used for optimization - contains only the ones that are modulating filter cutoff
            FixedArray<LFOv2Unit*> filLFOs;
            
            // used for optimization - contains only the ones that are modulating resonance
            FixedArray<LFOv2Unit*> resLFOs;
            
            // used for optimization - contains only the ones that are modulating pan
            FixedArray<LFOv2Unit*> panLFOs;
            

        public:
            Voice* const pVoice;
        
            /**
             * @param Voice The voice to which this rack belongs.
             */
            SfzSignalUnitRack(Voice* voice);
            ~SfzSignalUnitRack();

            virtual EndpointSignalUnit* GetEndpointUnit();
            
            virtual void Trigger();
            virtual void EnterFadeOutStage();
            
            friend class EndpointUnit;
    };
}} // namespace LinuxSampler::sfz

#endif  /* __LS_SFZSIGNALUNITRACK_H__ */

1	iliev	2218	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2011 Grigor Iliev *
6			* *
7			* This program is free software; you can redistribute it and/or modify *
8			* it under the terms of the GNU General Public License as published by *
9			* the Free Software Foundation; either version 2 of the License, or *
10			* (at your option) any later version. *
11			* *
12			* This program is distributed in the hope that it will be useful, *
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15			* GNU General Public License for more details. *
16			* *
17			* You should have received a copy of the GNU General Public License *
18			* along with this program; if not, write to the Free Software *
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20			* MA 02111-1307 USA *
21			***************************************************************************/
22
23			#ifndef __LS_SFZSIGNALUNITRACK_H__
24			#define __LS_SFZSIGNALUNITRACK_H__
25
26			#include "../common/SignalUnitRack.h"
27			#include "EG.h"
28			#include "EGADSR.h"
29	iliev	2219	#include "../common/AbstractVoice.h"
30	iliev	2223	#include "../common/PulseLFO.h"
31			#include "../common/SawLFO.h"
32			#include "../common/SineLFO.h"
33	iliev	2218
34			namespace LinuxSampler { namespace sfz {
35			const int MaxUnitCount = 1000;
36			const int maxEgCount = 100; // Maximum number of v2 envelope generators
37			const int maxLfoCount = 100; // Maximum number of v2 LFOs
38
39			class Voice;
40			class SfzSignalUnitRack;
41
42			class SfzSignalUnit: public SignalUnit {
43			public:
44			Voice* pVoice;
45
46			SfzSignalUnit(SfzSignalUnitRack* rack);
47			SfzSignalUnit(const SfzSignalUnit& Unit): SignalUnit(Unit.pRack) { Copy(Unit); }
48
49			void Copy(const SfzSignalUnit& Unit) {
50			pVoice = Unit.pVoice;
51
52			SignalUnit::Copy(Unit);
53			}
54
55			double GetSampleRate();
56			};
57
58			template <class T>
59	iliev	2219	class EGUnit: public SfzSignalUnit {
60	iliev	2218	public:
61			::sfz::EG* pEGInfo;
62			T EG;
63
64			EGUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pEGInfo(NULL) { }
65	iliev	2219	EGUnit(const EGUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
66	iliev	2218	void operator=(const EGUnit& Unit) { Copy(Unit); }
67
68			void Copy(const EGUnit& Unit) {
69			pEGInfo = Unit.pEGInfo;
70
71			SfzSignalUnit::Copy(Unit);
72			}
73
74			virtual bool Active() { return EG.active(); }
75	iliev	2220	virtual float GetLevel() { return DelayStage() ? 0 : EG.getLevel(); }
76	iliev	2218
77			virtual void EnterReleaseStage() { EG.update(EG::event_release, GetSampleRate()); }
78			virtual void CancelRelease() { EG.update(EG::event_cancel_release, GetSampleRate()); }
79
80			virtual void Increment() {
81			if (DelayStage()) return;
82
83			SfzSignalUnit::Increment();
84			if (!EG.active()) return;
85
86			switch (EG.getSegmentType()) {
87			case EG::segment_lin:
88			EG.processLin();
89			break;
90			case EG::segment_exp:
91			EG.processExp();
92			break;
93			case EG::segment_end:
94			EG.getLevel();
95			break; // noop
96			case EG::segment_pow:
97			EG.processPow();
98			break;
99			}
100
101			if (EG.active()) {
102			EG.increment(1);
103			if (!EG.toStageEndLeft()) EG.update(EG::event_stage_end, GetSampleRate());
104			}
105			}
106			};
107
108			class EGv1Unit: public EGUnit<EGADSR> {
109			public:
110	iliev	2220	int depth;
111			EGv1Unit(SfzSignalUnitRack* rack): EGUnit<EGADSR>(rack), depth(0) { }
112	iliev	2218	virtual void Trigger();
113			};
114
115			class EGv2Unit: public EGUnit< ::LinuxSampler::sfz::EG> {
116			public:
117			EGv2Unit(SfzSignalUnitRack* rack): EGUnit< ::LinuxSampler::sfz::EG>(rack) { }
118			virtual void Trigger();
119			};
120
121	iliev	2220	class PitchEGUnit: public EGv1Unit {
122			public:
123			PitchEGUnit(SfzSignalUnitRack* rack): EGv1Unit(rack) { }
124			virtual void Trigger();
125			};
126
127	iliev	2222	class FilEGUnit: public EGv1Unit {
128			public:
129			FilEGUnit(SfzSignalUnitRack* rack): EGv1Unit(rack) { }
130			virtual void Trigger();
131			};
132
133	iliev	2223	class AbstractLfo {
134			public:
135			virtual float Render() = 0;
136			virtual void Update(const uint16_t& ExtControlValue) = 0;
137			virtual void Trigger(float Frequency, start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) = 0;
138			};
139
140			template <class T>
141			class LfoBase: public AbstractLfo, public T {
142			public:
143			LfoBase(float Max): T(Max) { }
144			virtual float Render() { return T::render(); }
145
146			virtual void Update(const uint16_t& ExtControlValue) { T::update(ExtControlValue); }
147
148			virtual void Trigger (
149			float Frequency, start_level_t StartLevel, uint16_t InternalDepth,
150			uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate
151			) {
152			T::trigger(Frequency, StartLevel, InternalDepth, ExtControlDepth, FlipPhase, SampleRate);
153			}
154			};
155
156	iliev	2219	class LFOUnit: public SfzSignalUnit {
157			public:
158			::sfz::LFO* pLfoInfo;
159	iliev	2223	AbstractLfo* pLFO;
160	iliev	2219
161	iliev	2223	LFOUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pLfoInfo(NULL), pLFO(NULL) { }
162			LFOUnit(const LFOUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
163	iliev	2219	void operator=(const LFOUnit& Unit) { Copy(Unit); }
164
165			void Copy(const LFOUnit& Unit) {
166			pLfoInfo = Unit.pLfoInfo;
167
168			SfzSignalUnit::Copy(Unit);
169			}
170
171			virtual bool Active() { return true; }
172			virtual void Trigger();
173			virtual void Increment();
174			virtual float GetLevel() { return Level; }
175			};
176	iliev	2218
177	iliev	2221	class LFOv1Unit: public LFOUnit {
178			public:
179			::sfz::LFO lfoInfo;
180	iliev	2223	LfoBase<LFOSigned> lfo;
181	iliev	2221
182	iliev	2223	LFOv1Unit(SfzSignalUnitRack* rack): LFOUnit(rack), lfo(1200.0f) {
183			pLfoInfo = &lfoInfo; pLFO = &lfo;
184			}
185	iliev	2221
186			virtual void Trigger();
187			};
188
189	iliev	2219	class LFOv2Unit: public LFOUnit {
190	iliev	2223	protected:
191			FixedArray<AbstractLfo*> lfos;
192			LfoBase<LFOSigned> lfo0; // triangle
193			LfoBase<SineLFO<range_signed> > lfo1; // sine
194			LfoBase<PulseLFO<range_unsigned, 750> > lfo2; // pulse 75%
195			LfoBase<SquareLFO<range_signed> > lfo3; // square
196			LfoBase<PulseLFO<range_unsigned, 250> > lfo4; // pulse 25%
197			LfoBase<PulseLFO<range_unsigned, 125> > lfo5; // pulse 12,5%
198			LfoBase<SawLFO<range_unsigned, true> > lfo6; // saw up
199			LfoBase<SawLFO<range_unsigned, false> > lfo7; // saw down
200
201
202	iliev	2219	public:
203	iliev	2223	LFOv2Unit(SfzSignalUnitRack* rack);
204	iliev	2219
205			virtual void Trigger();
206			};
207	iliev	2218
208	iliev	2221	class AmpLFOUnit: public LFOv1Unit {
209			public:
210			AmpLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
211
212			virtual void Trigger();
213			};
214	iliev	2219
215	iliev	2221	class PitchLFOUnit: public LFOv1Unit {
216			public:
217			PitchLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
218
219			virtual void Trigger();
220			};
221	iliev	2219
222	iliev	2221	class FilLFOUnit: public LFOv1Unit {
223			public:
224			FilLFOUnit(SfzSignalUnitRack* rack): LFOv1Unit(rack) { }
225
226			virtual void Trigger();
227			};
228
229
230
231	iliev	2218	class EndpointUnit : public EndpointSignalUnit {
232			public:
233			Voice* pVoice;
234
235			EndpointUnit(SfzSignalUnitRack* rack);
236
237			virtual void Trigger();
238
239			/** The endpoint should be active until the volume EG is active. */
240			virtual bool Active();
241
242			virtual float GetVolume();
243			virtual float GetFilterCutoff();
244			virtual float GetPitch();
245			virtual float GetResonance();
246	iliev	2219	virtual float GetPan();
247	iliev	2218
248			SfzSignalUnitRack* const GetRack();
249	iliev	2219
250			virtual float CalculateResonance(float res) {
251			return GetResonance() + res;
252			}
253	iliev	2218	};
254
255
256			class SfzSignalUnitRack : public SignalUnitRack {
257			private:
258			EndpointUnit suEndpoint;
259			EGv1Unit suVolEG;
260	iliev	2222	FilEGUnit suFilEG;
261	iliev	2220	PitchEGUnit suPitchEG;
262	iliev	2218
263	iliev	2221	AmpLFOUnit suAmpLFO;
264			PitchLFOUnit suPitchLFO;
265			FilLFOUnit suFilLFO;
266
267	iliev	2218	FixedArray<EGv2Unit*> EGs;
268
269			// used for optimization - contains only the ones that are modulating volume
270			FixedArray<EGv2Unit*> volEGs;
271
272			// used for optimization - contains only the ones that are modulating pitch
273			FixedArray<EGv2Unit*> pitchEGs;
274
275	iliev	2219
276			FixedArray<LFOv2Unit*> LFOs;
277
278			// used for optimization - contains only the ones that are modulating filter cutoff
279			FixedArray<LFOv2Unit*> filLFOs;
280
281			// used for optimization - contains only the ones that are modulating resonance
282			FixedArray<LFOv2Unit*> resLFOs;
283
284			// used for optimization - contains only the ones that are modulating pan
285			FixedArray<LFOv2Unit*> panLFOs;
286
287	iliev	2218
288			public:
289			Voice* const pVoice;
290
291			/**
292			* @param Voice The voice to which this rack belongs.
293			*/
294			SfzSignalUnitRack(Voice* voice);
295			~SfzSignalUnitRack();
296
297			virtual EndpointSignalUnit* GetEndpointUnit();
298
299			virtual void Trigger();
300			virtual void EnterFadeOutStage();
301
302			friend class EndpointUnit;
303			};
304			}} // namespace LinuxSampler::sfz
305
306			#endif /* __LS_SFZSIGNALUNITRACK_H__ */
307