/[svn]/linuxsampler/trunk/src/engines/sf2/Voice.h
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Contents of /linuxsampler/trunk/src/engines/sf2/Voice.h

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Revision 2203 - (show annotations) (download) (as text)
Sat Jul 9 16:44:27 2011 UTC (7 years, 5 months ago) by persson
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* sf2 engine: fine-tuned amplitude EG (by switching from gig to sfz EG)
* sfz engine: added support for EG hold (ampeg_hold)
* Mac OS X: made it possible to specify plugin installation dir to
  configure

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 - 2008 Christian Schoenebeck *
7 * Copyright (C) 2009 - 2011 Christian Schoenebeck and Grigor Iliev *
8 * *
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_SF2_VOICE_H__
26 #define __LS_SF2_VOICE_H__
27
28 #include "../../common/global_private.h"
29
30 #include "../../common/RTMath.h"
31 #include "../../common/Pool.h"
32 #include "../../drivers/audio/AudioOutputDevice.h"
33 #include "Stream.h"
34 #include "DiskThread.h"
35 #include "../gig/EGADSR.h"
36 #include "../gig/Filter.h"
37 #include "../common/VoiceBase.h"
38 #include "../gig/SynthesisParam.h"
39 #include "../sfz/EGADSR.h"
40
41 namespace LinuxSampler { namespace sf2 {
42 class Engine;
43 class EngineChannel;
44
45 /** SoundFont Voice
46 *
47 * Renders a voice for the SoundFont format.
48 */
49 class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::sf2::Region, ::sf2::Sample, DiskThread> {
50 public:
51 Voice();
52 virtual ~Voice();
53 void SetOutput(AudioOutputDevice* pAudioOutputDevice);
54 void SetEngine(LinuxSampler::Engine* pEngine);
55
56 protected:
57 virtual SampleInfo GetSampleInfo();
58 virtual RegionInfo GetRegionInfo();
59 virtual InstrumentInfo GetInstrumentInfo();
60 virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
61 virtual AbstractEngine* GetEngine() { return (AbstractEngine*)pEngine; }
62 virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
63 virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
64 virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
65 virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
66 virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
67 virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
68 virtual void InitLFO1();
69 virtual void InitLFO2();
70 virtual void InitLFO3();
71 virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
72 virtual float CalculateFinalCutoff(float cutoffBase);
73 virtual uint8_t GetVCFCutoffCtrl();
74 virtual uint8_t GetVCFResonanceCtrl();
75 virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent);
76 virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
77 virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
78 virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
79 virtual double GetSampleAttenuation();
80 virtual void ProcessGroupEvent(RTList<Event>::Iterator& itEvent);
81
82 private:
83 ::LinuxSampler::sfz::EGADSR EG1;
84 ::LinuxSampler::gig::EGADSR EG2; // TODO: use sfz v1 instead of gig
85 ::sf2::Region* pPresetRegion;
86
87 public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
88 // Attributes
89 Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
90 //uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
91
92 // Static Methods
93 static float CalculateFilterCutoffCoeff();
94
95 // Methods
96 void ProcessEvents(uint Samples);
97 void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
98
99 EngineChannel* GetSf2EngineChannel();
100
101 protected:
102 virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
103 /*uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
104 c = (!pRegion->Crossfade.out_end) ? c // 0,0,0,0 means no crossfade defined
105 : (c < pRegion->Crossfade.in_end) ?
106 ((c <= pRegion->Crossfade.in_start) ? 0
107 : 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
108 : (c <= pRegion->Crossfade.out_start) ? 127
109 : (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
110 : 0;
111 return pRegion->InvertAttenuationController ? 127 - c : c;*/ // TODO: ^^^
112 return 0;
113 }
114 };
115
116 }} // namespace LinuxSampler::sf2
117
118 #endif // __LS_SF2_VOICE_H__

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