engines/common/SignalUnitRack.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_SIGNALUNITRACK_H__
#define __LS_SIGNALUNITRACK_H__

#include "Event.h"
#include "SignalUnit.h"
#include "../../common/Pool.h"


namespace LinuxSampler {
    class SignalUnitRack {
        protected:
            uint CurrentStep; // The current time step

        public:
            SignalUnitRack(): CurrentStep(0) { }
            uint GetCurrentStep() { return CurrentStep; }

            /**
             * Will be called to increment the time with one sample point.
             * Each unit should recalculate its current level on every call of this function.
             */
            virtual void Increment() = 0;
            
            virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) = 0;
            
            /** Initializes and triggers the rack. */
            virtual void Trigger() = 0;
            
            /**
             * When the rack belongs to a voice, this method is
             * called when the voice enter the release stage.
             */
            virtual void EnterReleaseStage() = 0;
            
            /**
             * When the rack belongs to a voice, this method is
             * called when the voice is of type which ignore note off.
             */
            virtual void CancelRelease() = 0;
            
            virtual EndpointSignalUnit* GetEndpointUnit() = 0;
    };
    
    template <class O /* The signal unit rack's owner */>
    class SignalUnitRackBase: public SignalUnitRack {
        protected:
            O* pOwner; // The owner to which this rack belongs.

        public:
            ArrayList<SignalUnitBase<O>*> Units; // A list of all signal units in this rack
            
            SignalUnitRackBase(O* Owner) {
                pOwner = Owner;
            }
            
            /**
             * Will be called to increment the time with one sample point.
             * Each unit should recalculate its current level on every call of this function.
             */
            virtual void Increment() {
                CurrentStep++;

                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->Increment();
                }
            }
            
            virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
                if ( !(itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) ) return;
                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->ProcessCCEvent(itEvent->Param.CC.Controller, itEvent->Param.CC.Value);
                }
            }
            
            /** Initializes and triggers the rack. */
            virtual void Trigger() {
                CurrentStep = 0;
                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->SetOwner(pOwner);
                    Units[i]->Trigger();
                }
            }
            
            virtual void EnterReleaseStage() {
                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->EnterReleaseStage();
                }
            }
            
            virtual void CancelRelease() {
                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->CancelRelease();
                }
            }
    };
} // namespace LinuxSampler

#endif  /* __LS_SIGNALUNITRACK_H__ */
1	iliev	2205	/***************************************************************************
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_SIGNALUNITRACK_H__
24			#define __LS_SIGNALUNITRACK_H__
25
26			#include "Event.h"
27			#include "SignalUnit.h"
28			#include "../../common/Pool.h"
29
30
31			namespace LinuxSampler {
32			class SignalUnitRack {
33			protected:
34			uint CurrentStep; // The current time step
35
36			public:
37			SignalUnitRack(): CurrentStep(0) { }
38			uint GetCurrentStep() { return CurrentStep; }
39
40			/**
41			* Will be called to increment the time with one sample point.
42			* Each unit should recalculate its current level on every call of this function.
43			*/
44			virtual void Increment() = 0;
45
46			virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) = 0;
47
48			/** Initializes and triggers the rack. */
49			virtual void Trigger() = 0;
50
51			/**
52			* When the rack belongs to a voice, this method is
53			* called when the voice enter the release stage.
54			*/
55			virtual void EnterReleaseStage() = 0;
56
57			/**
58			* When the rack belongs to a voice, this method is
59			* called when the voice is of type which ignore note off.
60			*/
61			virtual void CancelRelease() = 0;
62
63			virtual EndpointSignalUnit* GetEndpointUnit() = 0;
64			};
65
66			template <class O /* The signal unit rack's owner */>
67			class SignalUnitRackBase: public SignalUnitRack {
68			protected:
69			O* pOwner; // The owner to which this rack belongs.
70
71			public:
72			ArrayList<SignalUnitBase<O>*> Units; // A list of all signal units in this rack
73
74			SignalUnitRackBase(O* Owner) {
75			pOwner = Owner;
76			}
77
78			/**
79			* Will be called to increment the time with one sample point.
80			* Each unit should recalculate its current level on every call of this function.
81			*/
82			virtual void Increment() {
83			CurrentStep++;
84
85			for (int i = 0; i < Units.size(); i++) {
86			Units[i]->Increment();
87			}
88			}
89
90			virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
91			if ( !(itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) ) return;
92			for (int i = 0; i < Units.size(); i++) {
93			Units[i]->ProcessCCEvent(itEvent->Param.CC.Controller, itEvent->Param.CC.Value);
94			}
95			}
96
97			/** Initializes and triggers the rack. */
98			virtual void Trigger() {
99			CurrentStep = 0;
100			for (int i = 0; i < Units.size(); i++) {
101			Units[i]->SetOwner(pOwner);
102			Units[i]->Trigger();
103			}
104			}
105
106			virtual void EnterReleaseStage() {
107			for (int i = 0; i < Units.size(); i++) {
108			Units[i]->EnterReleaseStage();
109			}
110			}
111
112			virtual void CancelRelease() {
113			for (int i = 0; i < Units.size(); i++) {
114			Units[i]->CancelRelease();
115			}
116			}
117			};
118			} // namespace LinuxSampler
119
120			#endif /* __LS_SIGNALUNITRACK_H__ */