/[svn]/linuxsampler/trunk/src/engines/gig/Voice.h
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Annotation of /linuxsampler/trunk/src/engines/gig/Voice.h

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Revision 2015 - (hide annotations) (download) (as text)
Sun Oct 25 22:22:52 2009 UTC (14 years, 5 months ago) by iliev
File MIME type: text/x-c++hdr
File size: 6276 byte(s)
* Refactoring: moved the independent code from gig::Voice to base classes
* SoundFont format engine: implemented EG1 & EG2

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 iliev 2015 * Copyright (C) 2005 - 2009 Christian Schoenebeck *
7     * Copyright (C) 2009 Grigor Iliev *
8 schoenebeck 53 * *
9     * This program is free software; you can redistribute it and/or modify *
10     * it under the terms of the GNU General Public License as published by *
11     * the Free Software Foundation; either version 2 of the License, or *
12     * (at your option) any later version. *
13     * *
14     * This program is distributed in the hope that it will be useful, *
15     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17     * GNU General Public License for more details. *
18     * *
19     * You should have received a copy of the GNU General Public License *
20     * along with this program; if not, write to the Free Software *
21     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22     * MA 02111-1307 USA *
23     ***************************************************************************/
24    
25     #ifndef __LS_GIG_VOICE_H__
26     #define __LS_GIG_VOICE_H__
27    
28 schoenebeck 1424 #include "../../common/global_private.h"
29 schoenebeck 53
30 schoenebeck 505 #include <gig.h>
31    
32 schoenebeck 53 #include "../../common/RTMath.h"
33 schoenebeck 273 #include "../../common/Pool.h"
34 schoenebeck 203 #include "../../drivers/audio/AudioOutputDevice.h"
35 schoenebeck 53 #include "Stream.h"
36     #include "DiskThread.h"
37 schoenebeck 738 #include "EGADSR.h"
38 schoenebeck 53 #include "EGDecay.h"
39     #include "Filter.h"
40 iliev 2012 #include "../common/VoiceBase.h"
41 schoenebeck 770 #include "SynthesisParam.h"
42 persson 832 #include "SmoothVolume.h"
43 schoenebeck 53
44     namespace LinuxSampler { namespace gig {
45     class Engine;
46 iliev 2012 class EngineChannel;
47 schoenebeck 53
48     /** Gig Voice
49     *
50     * Renders a voice for the Gigasampler format.
51     */
52 iliev 2015 class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::gig::DimensionRegion, ::gig::Sample, DiskThread> {
53 schoenebeck 53 public:
54     Voice();
55 letz 502 virtual ~Voice();
56 schoenebeck 53 void SetOutput(AudioOutputDevice* pAudioOutputDevice);
57 iliev 2012 void SetEngine(LinuxSampler::Engine* pEngine);
58 schoenebeck 829
59 iliev 2015 protected:
60     virtual SampleInfo GetSampleInfo();
61     virtual RegionInfo GetRegionInfo();
62     virtual InstrumentInfo GetInstrumentInfo();
63     virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
64     virtual AbstractEngine* GetEngine() { return (AbstractEngine*)pEngine; }
65     virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
66     virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
67     virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
68     virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
69     virtual void InitLFO1();
70     virtual void InitLFO2();
71     virtual void InitLFO3();
72     virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
73     virtual float CalculateFinalCutoff(float cutoffBase);
74     virtual uint8_t GetVCFCutoffCtrl();
75     virtual uint8_t GetVCFResonanceCtrl();
76     virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent);
77     virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
78     virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
79     virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
80     virtual double GetSampleAttenuation();
81 iliev 2012
82 iliev 2015 private:
83     public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
84 schoenebeck 53 // Attributes
85 schoenebeck 411 Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
86 schoenebeck 770 //uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
87 schoenebeck 738
88 schoenebeck 53 // Static Methods
89     static float CalculateFilterCutoffCoeff();
90    
91     // Methods
92 schoenebeck 319 void ProcessEvents(uint Samples);
93 schoenebeck 738 void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
94 schoenebeck 245
95 iliev 2015 EngineChannel* GetGigEngineChannel();
96    
97     protected:
98     virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
99     uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
100     c = (!pRegion->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
101     : (c < pRegion->Crossfade.in_end) ?
102     ((c <= pRegion->Crossfade.in_start) ? 0
103     : 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
104     : (c <= pRegion->Crossfade.out_start) ? 127
105     : (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
106 persson 832 : 0;
107 iliev 2015 return pRegion->InvertAttenuationController ? 127 - c : c;
108 schoenebeck 236 }
109    
110 schoenebeck 53 inline float Constrain(float ValueToCheck, float Min, float Max) {
111     if (ValueToCheck > Max) ValueToCheck = Max;
112     else if (ValueToCheck < Min) ValueToCheck = Min;
113     return ValueToCheck;
114     }
115     };
116    
117     }} // namespace LinuxSampler::gig
118    
119     #endif // __LS_GIG_VOICE_H__

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