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	/***************************************************************************
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__ */