/[svn]/linuxsampler/trunk/src/engines/gig/Voice.h
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revision 738 by schoenebeck, Tue Aug 16 17:14:25 2005 UTC revision 877 by persson, Sun Jun 25 13:54:17 2006 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 29  Line 29 
29  #include <gig.h>  #include <gig.h>
30    
31  #include "../../common/RTMath.h"  #include "../../common/RTMath.h"
 #include "../../common/RingBuffer.h"  
32  #include "../../common/Pool.h"  #include "../../common/Pool.h"
33  #include "../../drivers/audio/AudioOutputDevice.h"  #include "../../drivers/audio/AudioOutputDevice.h"
 #include "../common/BiquadFilter.h"  
34  #include "Engine.h"  #include "Engine.h"
35  #include "EngineChannel.h"  #include "EngineChannel.h"
36  #include "Stream.h"  #include "Stream.h"
# Line 41  Line 39 
39  #include "EGDecay.h"  #include "EGDecay.h"
40  #include "Filter.h"  #include "Filter.h"
41  #include "../common/LFOBase.h"  #include "../common/LFOBase.h"
42    #include "SynthesisParam.h"
43    #include "SmoothVolume.h"
44    
45  // include the appropriate (unsigned) triangle LFO implementation  // include the appropriate (unsigned) triangle LFO implementation
46  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION
# Line 103  namespace LinuxSampler { namespace gig { Line 103  namespace LinuxSampler { namespace gig {
103                  type_release_trigger_required,  ///< If the key of this voice will be released, it causes a release triggered voice to be spawned                  type_release_trigger_required,  ///< If the key of this voice will be released, it causes a release triggered voice to be spawned
104                  type_release_trigger            ///< Release triggered voice which cannot be killed by releasing its key                  type_release_trigger            ///< Release triggered voice which cannot be killed by releasing its key
105              };              };
106                
107              // Attributes              // Attributes
108              type_t       Type;         ///< Voice Type              type_t       Type;         ///< Voice Type
109              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice
# Line 121  namespace LinuxSampler { namespace gig { Line 121  namespace LinuxSampler { namespace gig {
121              int  Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup);              int  Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup);
122              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
123              inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; }              inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; }
124                void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);
125    
126          //private:          //private:
127              // Types              // Types
128              enum playback_state_t {              enum playback_state_t {
# Line 133  namespace LinuxSampler { namespace gig { Line 135  namespace LinuxSampler { namespace gig {
135              // Attributes              // Attributes
136              EngineChannel*              pEngineChannel;              EngineChannel*              pEngineChannel;
137              Engine*                     pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.              Engine*                     pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.
138              float                       Volume;             ///< Volume level of the voice              float                       VolumeLeft;         ///< Left channel volume. This factor is calculated when the voice is triggered and doesn't change after that.
139              float                       PanLeft;              float                       VolumeRight;        ///< Right channel volume. This factor is calculated when the voice is triggered and doesn't change after that.
140              float                       PanRight;              SmoothVolume                CrossfadeSmoother;  ///< Crossfade volume, updated by crossfade CC events
141              float                       CrossfadeVolume;    ///< Current attenuation level caused by a crossfade (only if a crossfade is defined of course)              SmoothVolume                VolumeSmoother;     ///< Volume, updated by CC 7 (volume) events
142                SmoothVolume                PanLeftSmoother;    ///< Left channel volume, updated by CC 10 (pan) events
143                SmoothVolume                PanRightSmoother;   ///< Right channel volume, updated by CC 10 (pan) events
144              double                      Pos;                ///< Current playback position in sample              double                      Pos;                ///< Current playback position in sample
145              float                       PitchBase;          ///< Basic pitch depth, stays the same for the whole life time of the voice              float                       PitchBase;          ///< Basic pitch depth, stays the same for the whole life time of the voice
146              float                       PitchBend;          ///< Current pitch value of the pitchbend wheel              float                       PitchBend;          ///< Current pitch value of the pitchbend wheel
# Line 149  namespace LinuxSampler { namespace gig { Line 153  namespace LinuxSampler { namespace gig {
153              int                         RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator              int                         RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator
154              unsigned long               MaxRAMPos;          ///< The upper allowed limit (not actually the end) in the RAM sample cache, after that point it's not safe to chase the interpolator another time over over the current cache position, instead we switch to disk then.              unsigned long               MaxRAMPos;          ///< The upper allowed limit (not actually the end) in the RAM sample cache, after that point it's not safe to chase the interpolator another time over over the current cache position, instead we switch to disk then.
155              bool                        RAMLoop;            ///< If this voice has a loop defined which completely fits into the cached RAM part of the sample, in this case we handle the looping within the voice class, else if the loop is located in the disk stream part, we let the disk stream handle the looping              bool                        RAMLoop;            ///< If this voice has a loop defined which completely fits into the cached RAM part of the sample, in this case we handle the looping within the voice class, else if the loop is located in the disk stream part, we let the disk stream handle the looping
156              uint                        LoopCyclesLeft;     ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed              //uint                        LoopCyclesLeft;     ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
157              uint                        Delay;              ///< Number of sample points the rendering process of this voice should be delayed (jitter correction), will be set to 0 after the first audio fragment cycle              uint                        Delay;              ///< Number of sample points the rendering process of this voice should be delayed (jitter correction), will be set to 0 after the first audio fragment cycle
158              EGADSR                      EG1;                ///< Envelope Generator 1 (Amplification)              EGADSR                      EG1;                ///< Envelope Generator 1 (Amplification)
159              EGADSR                      EG2;                ///< Envelope Generator 2 (Filter cutoff frequency)              EGADSR                      EG2;                ///< Envelope Generator 2 (Filter cutoff frequency)
160              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)
             Filter                      FilterLeft;  
             Filter                      FilterRight;  
161              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
162              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
             static const float          FILTER_CUTOFF_COEFF;  
163              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)
164              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)
165              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)
# Line 170  namespace LinuxSampler { namespace gig { Line 171  namespace LinuxSampler { namespace gig {
171              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
172          //private:          //private:
173              int                         SynthesisMode;              int                         SynthesisMode;
   
   
             float                       fFinalPitch;  
             float                       fFinalVolume;  
174              float                       fFinalCutoff;              float                       fFinalCutoff;
175              float                       fFinalResonance;              float                       fFinalResonance;
176                SynthesisParam              finalSynthesisParameters;
177                Loop                        loop;
178    
179              // Static Methods              // Static Methods
180              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
# Line 191  namespace LinuxSampler { namespace gig { Line 190  namespace LinuxSampler { namespace gig {
190              void processCutoffEvent(RTList<Event>::Iterator& itEvent);              void processCutoffEvent(RTList<Event>::Iterator& itEvent);
191              void processResonanceEvent(RTList<Event>::Iterator& itEvent);              void processResonanceEvent(RTList<Event>::Iterator& itEvent);
192    
193              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {              inline uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
194                  float att = (!pDimRgn->Crossfade.out_end) ? CrossfadeControllerValue / 127.0f /* 0,0,0,0 means no crossfade defined */                  uint8_t c = std::max(CrossfadeControllerValue, pDimRgn->AttenuationControllerThreshold);
195                            : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ?                  c = (!pDimRgn->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
196                                  ((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f                            : (c < pDimRgn->Crossfade.in_end) ?
197                                  : float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))                                  ((c <= pDimRgn->Crossfade.in_start) ? 0
198                            : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f                                  : 127 * (c - pDimRgn->Crossfade.in_start) / (pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))
199                            : (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(pDimRgn->Crossfade.out_end - CrossfadeControllerValue) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)                            : (c <= pDimRgn->Crossfade.out_start) ? 127
200                            : 0.0f;                            : (c < pDimRgn->Crossfade.out_end) ? 127 * (pDimRgn->Crossfade.out_end - c) / (pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
201                  return pDimRgn->InvertAttenuationController ? 1 - att : att;                            : 0;
202                    return pDimRgn->InvertAttenuationController ? 127 - c : c;
203              }              }
204    
205              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
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