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	/***************************************************************************
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	#include "../common/AbstractVoice.h"
30
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	class EGUnit: public SfzSignalUnit {
57	public:
58	::sfz::EG* pEGInfo;
59	T EG;
60
61	EGUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pEGInfo(NULL) { }
62	EGUnit(const EGUnit& Unit): SfzSignalUnit(Unit) { Copy(Unit); }
63	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	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
138	class LFOv2Unit: public LFOUnit {
139	public:
140	LFOv2Unit(SfzSignalUnitRack* rack): LFOUnit(rack) { }
141
142	virtual void Trigger();
143	};
144
145
146
147	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	virtual float GetPan();
163
164	SfzSignalUnitRack* const GetRack();
165
166	virtual float CalculateResonance(float res) {
167	return GetResonance() + res;
168	}
169	};
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
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
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