engines/gig/Manipulator.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *                                                                         *
 *   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_GIG_MANIPULATOR_H__
#define __LS_GIG_MANIPULATOR_H__

#include "../../common/global.h"
#include "Engine.h"

namespace LinuxSampler { namespace gig {

    // The following template classes are used for composition with general
    // Modulation classes like the LFO template. The modulator calls the
    // ApplyLevel() method of the respective manipulator when its level has
    // changed and the manipulator actually decides what to do with the
    // modulation signal the modulator (e.g. LFO) provides.

    /**
     * Abstract base class for all Gig manipulator classes.
     */
    class BaseManipulator {
        public:
            BaseManipulator(gig::Engine* pEngine) {
                this->pEngine = pEngine;
            }
        protected:
            gig::Engine* pEngine;
    };

    /** Amplification Manipulator
     *
     * Specialized manipulator for writing volume parameters to the synthesis
     * parameter matrix of the Gig Engine.
     */
    class VCAManipulator : public BaseManipulator {
        public:
            VCAManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
            inline void ApplyLevel(float& Level, int& iSample) {
                pEngine->pSynthesisParameters[Event::destination_vca][iSample] *= Level;
            }
    };

    /** Filter Cutoff Frequency Manipulator
     *
     * Specialized manipulator for writing filter cutoff frequency parameters to
     * the synthesis parameter matrix of the Gig Engine.
     */
    class VCFCManipulator : public BaseManipulator {
        public:
            VCFCManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
            inline void ApplyLevel(float& Level, int& iSample) {
                pEngine->pSynthesisParameters[Event::destination_vcfc][iSample] *= Level;
            }
    };

    /** Pitch Manipulator
     *
     * Specialized manipulator for writing pitch parameters to the synthesis
     * parameter matrix of the Gig Engine.
     */
    class VCOManipulator : public BaseManipulator {
        public:
            VCOManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
            inline void ApplyLevel(float& Level, int& iSample) {
                pEngine->pSynthesisParameters[Event::destination_vco][iSample] *= RTMath::CentsToFreqRatio(Level);
            }
    };

}} // namespace LinuxSampler::gig

#endif // __LS_GIG_MANIPULATOR_H__
1	schoenebeck	53	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	56	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	53	* *
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_GIG_MANIPULATOR_H__
24			#define __LS_GIG_MANIPULATOR_H__
25
26			#include "../../common/global.h"
27			#include "Engine.h"
28
29			namespace LinuxSampler { namespace gig {
30
31			// The following template classes are used for composition with general
32			// Modulation classes like the LFO template. The modulator calls the
33			// ApplyLevel() method of the respective manipulator when its level has
34			// changed and the manipulator actually decides what to do with the
35			// modulation signal the modulator (e.g. LFO) provides.
36
37			/**
38			* Abstract base class for all Gig manipulator classes.
39			*/
40			class BaseManipulator {
41			public:
42			BaseManipulator(gig::Engine* pEngine) {
43			this->pEngine = pEngine;
44			}
45			protected:
46			gig::Engine* pEngine;
47			};
48
49			/** Amplification Manipulator
50			*
51			* Specialized manipulator for writing volume parameters to the synthesis
52			* parameter matrix of the Gig Engine.
53			*/
54			class VCAManipulator : public BaseManipulator {
55			public:
56			VCAManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
57			inline void ApplyLevel(float& Level, int& iSample) {
58			pEngine->pSynthesisParameters[Event::destination_vca][iSample] *= Level;
59			}
60			};
61
62			/** Filter Cutoff Frequency Manipulator
63			*
64			* Specialized manipulator for writing filter cutoff frequency parameters to
65			* the synthesis parameter matrix of the Gig Engine.
66			*/
67			class VCFCManipulator : public BaseManipulator {
68			public:
69			VCFCManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
70			inline void ApplyLevel(float& Level, int& iSample) {
71			pEngine->pSynthesisParameters[Event::destination_vcfc][iSample] *= Level;
72			}
73			};
74
75			/** Pitch Manipulator
76			*
77			* Specialized manipulator for writing pitch parameters to the synthesis
78			* parameter matrix of the Gig Engine.
79			*/
80			class VCOManipulator : public BaseManipulator {
81			public:
82			VCOManipulator(gig::Engine* pEngine) : BaseManipulator(pEngine) {}
83			inline void ApplyLevel(float& Level, int& iSample) {
84			pEngine->pSynthesisParameters[Event::destination_vco][iSample] *= RTMath::CentsToFreqRatio(Level);
85			}
86			};
87
88			}} // namespace LinuxSampler::gig
89
90			#endif // __LS_GIG_MANIPULATOR_H__