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	/***************************************************************************
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
33	class SignalUnitRack {
34	protected:
35	uint CurrentStep; // The current time step
36
37	public:
38	FixedArray<SignalUnit*> Units; // A list of all signal units in this rack
39
40	/**
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	uint GetCurrentStep() { return CurrentStep; }
46
47	virtual EndpointSignalUnit* GetEndpointUnit() = 0;
48
49	virtual void EnterFadeOutStage() = 0;
50
51	/**
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	/**
79	* When the rack belongs to a voice, this method is
80	* called when the voice enter the release stage.
81	*/
82	virtual void EnterReleaseStage() {
83	for (int i = 0; i < Units.size(); i++) {
84	Units[i]->EnterReleaseStage();
85	}
86	}
87
88	/**
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	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__ */