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	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
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_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__