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"

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 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:
            EGv1Unit(SfzSignalUnitRack* rack): EGUnit<EGADSR>(rack) { }
            virtual void Trigger();
    };
    
    class EGv2Unit: public EGUnit< ::LinuxSampler::sfz::EG> {
        public:
            EGv2Unit(SfzSignalUnitRack* rack): EGUnit< ::LinuxSampler::sfz::EG>(rack) { }
            virtual void Trigger();
    };
    
    class LFOUnit: public SfzSignalUnit {
        public:
            ::sfz::LFO* pLfoInfo;
            LFOSigned lfo;
            
            LFOUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pLfoInfo(NULL), lfo(1200.0f) { }
            LFOUnit(const LFOUnit& Unit): SfzSignalUnit(Unit), lfo(1200.0f) { 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 LFOv2Unit: public LFOUnit {
        public:
            LFOv2Unit(SfzSignalUnitRack* rack): LFOUnit(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;
            
            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	2218
31			namespace LinuxSampler { namespace sfz {
32			const int MaxUnitCount = 1000;
33			const int maxEgCount = 100; // Maximum number of v2 envelope generators
34			const int maxLfoCount = 100; // Maximum number of v2 LFOs
35
36			class Voice;
37			class SfzSignalUnitRack;
38
39			class SfzSignalUnit: public SignalUnit {
40			public:
41			Voice* pVoice;
42
43			SfzSignalUnit(SfzSignalUnitRack* rack);
44			SfzSignalUnit(const SfzSignalUnit& Unit): SignalUnit(Unit.pRack) { Copy(Unit); }
45
46			void Copy(const SfzSignalUnit& Unit) {
47			pVoice = Unit.pVoice;
48
49			SignalUnit::Copy(Unit);
50			}
51
52			double GetSampleRate();
53			};
54
55			template <class T>
56	iliev	2219	class EGUnit: public SfzSignalUnit {
57	iliev	2218	public:
58			::sfz::EG* pEGInfo;
59			T EG;
60
61			EGUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pEGInfo(NULL) { }
62	iliev	2219	EGUnit(const EGUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
63	iliev	2218	void operator=(const EGUnit& Unit) { Copy(Unit); }
64
65			void Copy(const EGUnit& Unit) {
66			pEGInfo = Unit.pEGInfo;
67
68			SfzSignalUnit::Copy(Unit);
69			}
70
71			virtual bool Active() { return EG.active(); }
72			virtual float GetLevel() { return EG.getLevel(); }
73
74			virtual void EnterReleaseStage() { EG.update(EG::event_release, GetSampleRate()); }
75			virtual void CancelRelease() { EG.update(EG::event_cancel_release, GetSampleRate()); }
76
77			virtual void Increment() {
78			if (DelayStage()) return;
79
80			SfzSignalUnit::Increment();
81			if (!EG.active()) return;
82
83			switch (EG.getSegmentType()) {
84			case EG::segment_lin:
85			EG.processLin();
86			break;
87			case EG::segment_exp:
88			EG.processExp();
89			break;
90			case EG::segment_end:
91			EG.getLevel();
92			break; // noop
93			case EG::segment_pow:
94			EG.processPow();
95			break;
96			}
97
98			if (EG.active()) {
99			EG.increment(1);
100			if (!EG.toStageEndLeft()) EG.update(EG::event_stage_end, GetSampleRate());
101			}
102			}
103			};
104
105			class EGv1Unit: public EGUnit<EGADSR> {
106			public:
107			EGv1Unit(SfzSignalUnitRack* rack): EGUnit<EGADSR>(rack) { }
108			virtual void Trigger();
109			};
110
111			class EGv2Unit: public EGUnit< ::LinuxSampler::sfz::EG> {
112			public:
113			EGv2Unit(SfzSignalUnitRack* rack): EGUnit< ::LinuxSampler::sfz::EG>(rack) { }
114			virtual void Trigger();
115			};
116
117	iliev	2219	class LFOUnit: public SfzSignalUnit {
118			public:
119			::sfz::LFO* pLfoInfo;
120			LFOSigned lfo;
121
122			LFOUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pLfoInfo(NULL), lfo(1200.0f) { }
123			LFOUnit(const LFOUnit& Unit): SfzSignalUnit(Unit), lfo(1200.0f) { Copy(Unit); }
124			void operator=(const LFOUnit& Unit) { Copy(Unit); }
125
126			void Copy(const LFOUnit& Unit) {
127			pLfoInfo = Unit.pLfoInfo;
128
129			SfzSignalUnit::Copy(Unit);
130			}
131
132			virtual bool Active() { return true; }
133			virtual void Trigger();
134			virtual void Increment();
135			virtual float GetLevel() { return Level; }
136			};
137	iliev	2218
138	iliev	2219	class LFOv2Unit: public LFOUnit {
139			public:
140			LFOv2Unit(SfzSignalUnitRack* rack): LFOUnit(rack) { }
141
142			virtual void Trigger();
143			};
144	iliev	2218
145	iliev	2219
146
147	iliev	2218	class EndpointUnit : public EndpointSignalUnit {
148			public:
149			Voice* pVoice;
150
151			EndpointUnit(SfzSignalUnitRack* rack);
152
153			virtual void Trigger();
154
155			/** The endpoint should be active until the volume EG is active. */
156			virtual bool Active();
157
158			virtual float GetVolume();
159			virtual float GetFilterCutoff();
160			virtual float GetPitch();
161			virtual float GetResonance();
162	iliev	2219	virtual float GetPan();
163	iliev	2218
164			SfzSignalUnitRack* const GetRack();
165	iliev	2219
166			virtual float CalculateResonance(float res) {
167			return GetResonance() + res;
168			}
169	iliev	2218	};
170
171
172			class SfzSignalUnitRack : public SignalUnitRack {
173			private:
174			EndpointUnit suEndpoint;
175			EGv1Unit suVolEG;
176
177			FixedArray<EGv2Unit*> EGs;
178
179			// used for optimization - contains only the ones that are modulating volume
180			FixedArray<EGv2Unit*> volEGs;
181
182			// used for optimization - contains only the ones that are modulating pitch
183			FixedArray<EGv2Unit*> pitchEGs;
184
185	iliev	2219
186			FixedArray<LFOv2Unit*> LFOs;
187
188			// used for optimization - contains only the ones that are modulating filter cutoff
189			FixedArray<LFOv2Unit*> filLFOs;
190
191			// used for optimization - contains only the ones that are modulating resonance
192			FixedArray<LFOv2Unit*> resLFOs;
193
194			// used for optimization - contains only the ones that are modulating pan
195			FixedArray<LFOv2Unit*> panLFOs;
196
197	iliev	2218
198			public:
199			Voice* const pVoice;
200
201			/**
202			* @param Voice The voice to which this rack belongs.
203			*/
204			SfzSignalUnitRack(Voice* voice);
205			~SfzSignalUnitRack();
206
207			virtual EndpointSignalUnit* GetEndpointUnit();
208
209			virtual void Trigger();
210			virtual void EnterFadeOutStage();
211
212			friend class EndpointUnit;
213			};
214			}} // namespace LinuxSampler::sfz
215
216			#endif /* __LS_SFZSIGNALUNITRACK_H__ */
217