/[svn]/linuxsampler/trunk/src/engines/sf2/SF2SignalUnitRack.h
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Revision 2205 - (hide annotations) (download) (as text)
Mon Jul 11 17:52:01 2011 UTC (12 years, 9 months ago) by iliev
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* Introduced Signal Units and Signal Unit Racks, which hopefully will meet
  the demands of the new engines for flexible signal processing.
* sf2: Initial implementation of vibrato LFO, fixes in modulation EG and
  and volume EG (work in progress)

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_SF2SIGNALUNITRACK_H__
24     #define __LS_SF2SIGNALUNITRACK_H__
25    
26     #include "../common/SignalUnitRack.h"
27     #include "../sfz/EGADSR.h"
28     #include "../common/AbstractVoice.h"
29    
30     namespace LinuxSampler { namespace sf2 {
31    
32     class Voice;
33    
34     class EGUnit : public SignalUnitBase<Voice>, public ::LinuxSampler::sfz::EGADSR {
35     public:
36     virtual bool Active() { return active(); }
37     virtual float GetLevel() { return getLevel(); }
38     virtual void EnterReleaseStage();
39     virtual void CancelRelease();
40     };
41    
42     class VolEGUnit : public EGUnit {
43     public:
44     virtual void Trigger();
45     virtual void Increment();
46     };
47    
48     class ModEGUnit : public EGUnit {
49     public:
50     virtual void Trigger();
51     virtual void Increment();
52     };
53    
54     class VibLfoUnit : public SignalUnitBase<Voice>, public LFOSigned {
55     public:
56     VibLfoUnit(): LFOSigned(1200.0f) { }
57     virtual bool Active() { return true; }
58     virtual void Trigger();
59     virtual void Increment();
60     virtual float GetLevel() { return Level; }
61     };
62    
63     class EndpointUnit : public EndpointSignalUnitBase<Voice> {
64     public:
65     EndpointUnit() { }
66    
67     virtual void Trigger();
68    
69     /** The endpoint should be active until the volume EG is active. */
70     virtual bool Active();
71    
72     virtual float GetVolume();
73     virtual float GetFilterCutoff();
74     virtual float GetPitch();
75     virtual float GetResonance();
76     };
77    
78     class SF2SignalUnitRack : public SignalUnitRackBase<Voice> {
79     private:
80     VolEGUnit suVolEG;
81     ModEGUnit suModEG;
82     VibLfoUnit suVibLfo;
83     EndpointUnit suEndpoint;
84    
85    
86     public:
87    
88     /**
89     * @param Voice The voice to which this rack belongs.
90     */
91     SF2SignalUnitRack(Voice* Voice);
92    
93     virtual void Trigger();
94     virtual EndpointSignalUnit* GetEndpointUnit();
95     };
96    
97     }} // namespace LinuxSampler::sf2
98    
99     #endif /* __LS_SF2SIGNALUNITRACK_H__ */
100    

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