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:
            FixedArray<SignalUnit*> Units; // A list of all signal units in this rack

            /**
             * @param maxUnitCount We are using fixed size array because of the real-time safe requirements.
             */
            SignalUnitRack(int maxUnitCount): CurrentStep(0), Units(maxUnitCount) { }
            
            uint GetCurrentStep() { return CurrentStep; }

            virtual EndpointSignalUnit* GetEndpointUnit() = 0;
            
            virtual void EnterFadeOutStage() = 0;
            
            /**
             * 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]->Trigger();
                }
            }
            
            /**
             * When the rack belongs to a voice, this method is
             * called when the voice enter the release stage.
             */
            virtual void EnterReleaseStage() {
                for (int i = 0; i < Units.size(); i++) {
                    Units[i]->EnterReleaseStage();
                }
            }
            
            /**
             * When the rack belongs to a voice, this method is
             * called when the voice is of type which ignore note off.
             */
            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	iliev	2218
33	iliev	2205	class SignalUnitRack {
34			protected:
35			uint CurrentStep; // The current time step
36
37			public:
38	iliev	2218	FixedArray<SignalUnit*> Units; // A list of all signal units in this rack
39	iliev	2217
40	iliev	2218	/**
41			* @param maxUnitCount We are using fixed size array because of the real-time safe requirements.
42			*/
43			SignalUnitRack(int maxUnitCount): CurrentStep(0), Units(maxUnitCount) { }
44
45	iliev	2205	uint GetCurrentStep() { return CurrentStep; }
46
47			virtual EndpointSignalUnit* GetEndpointUnit() = 0;
48
49	iliev	2218	virtual void EnterFadeOutStage() = 0;
50
51	iliev	2205	/**
52			* Will be called to increment the time with one sample point.
53			* Each unit should recalculate its current level on every call of this function.
54			*/
55			virtual void Increment() {
56			CurrentStep++;
57
58			for (int i = 0; i < Units.size(); i++) {
59			Units[i]->Increment();
60			}
61			}
62
63			virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
64			if ( !(itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) ) return;
65			for (int i = 0; i < Units.size(); i++) {
66			Units[i]->ProcessCCEvent(itEvent->Param.CC.Controller, itEvent->Param.CC.Value);
67			}
68			}
69
70			/** Initializes and triggers the rack. */
71			virtual void Trigger() {
72			CurrentStep = 0;
73			for (int i = 0; i < Units.size(); i++) {
74			Units[i]->Trigger();
75			}
76			}
77
78	iliev	2217	/**
79			* When the rack belongs to a voice, this method is
80			* called when the voice enter the release stage.
81			*/
82	iliev	2205	virtual void EnterReleaseStage() {
83			for (int i = 0; i < Units.size(); i++) {
84			Units[i]->EnterReleaseStage();
85			}
86			}
87
88	iliev	2217	/**
89			* When the rack belongs to a voice, this method is
90			* called when the voice is of type which ignore note off.
91			*/
92	iliev	2205	virtual void CancelRelease() {
93			for (int i = 0; i < Units.size(); i++) {
94			Units[i]->CancelRelease();
95			}
96			}
97			};
98			} // namespace LinuxSampler
99
100			#endif /* __LS_SIGNALUNITRACK_H__ */