/[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 2012 by iliev, Fri Oct 23 17:53:17 2009 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 - 2007 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 24  Line 24 
24  #ifndef __LS_GIG_VOICE_H__  #ifndef __LS_GIG_VOICE_H__
25  #define __LS_GIG_VOICE_H__  #define __LS_GIG_VOICE_H__
26    
27  #include "../../common/global.h"  #include "../../common/global_private.h"
28    
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"  
 #include "Engine.h"  
 #include "EngineChannel.h"  
34  #include "Stream.h"  #include "Stream.h"
35  #include "DiskThread.h"  #include "DiskThread.h"
36  #include "EGADSR.h"  #include "EGADSR.h"
37  #include "EGDecay.h"  #include "EGDecay.h"
38  #include "Filter.h"  #include "Filter.h"
39  #include "../common/LFOBase.h"  #include "../common/LFOBase.h"
40    #include "../common/VoiceBase.h"
41    #include "SynthesisParam.h"
42    #include "SmoothVolume.h"
43    
44  // include the appropriate (unsigned) triangle LFO implementation  // include the appropriate (unsigned) triangle LFO implementation
45  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION
# Line 65  Line 64 
64  #endif  #endif
65    
66  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
   
67      class Engine;      class Engine;
68        class EngineChannel;
69    
70      /// Reflects a MIDI controller      /// Reflects a MIDI controller
71      struct midi_ctrl {      struct midi_ctrl {
# Line 95  namespace LinuxSampler { namespace gig { Line 94  namespace LinuxSampler { namespace gig {
94       *       *
95       * Renders a voice for the Gigasampler format.       * Renders a voice for the Gigasampler format.
96       */       */
97      class Voice {      class Voice : public LinuxSampler::VoiceBase< ::gig::DimensionRegion> {
98          public:          public:
             // Types  
             enum type_t {  
                 type_normal,  
                 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            ///< Release triggered voice which cannot be killed by releasing its key  
             };  
               
99              // Attributes              // Attributes
100              type_t       Type;         ///< Voice Type              type_t       Type;         ///< Voice Type
101              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 117  namespace LinuxSampler { namespace gig { Line 109  namespace LinuxSampler { namespace gig {
109              void Render(uint Samples);              void Render(uint Samples);
110              void Reset();              void Reset();
111              void SetOutput(AudioOutputDevice* pAudioOutputDevice);              void SetOutput(AudioOutputDevice* pAudioOutputDevice);
112              void SetEngine(Engine* pEngine);              void SetEngine(LinuxSampler::Engine* pEngine);
113              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);
114              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
115              inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; }              inline bool IsStealable() { return !itKillEvent && PlaybackState >= playback_state_ram; }
116          //private:              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);
117              // Types  
118              enum playback_state_t {              virtual ::gig::DimensionRegion* GetRegion() { return pDimRgn; }
                 playback_state_end  = 0,  
                 playback_state_init = 1,  
                 playback_state_ram  = 2,  
                 playback_state_disk = 3  
             };  
119    
120            //private:
121              // Attributes              // Attributes
122              EngineChannel*              pEngineChannel;              EngineChannel*              pEngineChannel;
123              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.
124              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.
125              float                       PanLeft;              float                       VolumeRight;        ///< Right channel volume. This factor is calculated when the voice is triggered and doesn't change after that.
126              float                       PanRight;              SmoothVolume                CrossfadeSmoother;  ///< Crossfade volume, updated by crossfade CC events
127              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
128                SmoothVolume                PanLeftSmoother;    ///< Left channel volume, updated by CC 10 (pan) events
129                SmoothVolume                PanRightSmoother;   ///< Right channel volume, updated by CC 10 (pan) events
130              double                      Pos;                ///< Current playback position in sample              double                      Pos;                ///< Current playback position in sample
131              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
132              float                       PitchBend;          ///< Current pitch value of the pitchbend wheel              float                       PitchBend;          ///< Current pitch value of the pitchbend wheel
133                float                       PitchBendRange;     ///< The pitch range of the pitchbend wheel, value is in cents / 8192
134              float                       CutoffBase;         ///< Cutoff frequency before control change, EG and LFO are applied              float                       CutoffBase;         ///< Cutoff frequency before control change, EG and LFO are applied
135              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back
136              ::gig::DimensionRegion*     pDimRgn;            ///< Pointer to the articulation information of current dimension region of this voice              ::gig::DimensionRegion*     pDimRgn;            ///< Pointer to the articulation information of current dimension region of this voice
137                bool                        Orphan;             ///< true if this voice is playing a sample from an instrument that is unloaded. When the voice dies, the sample (and dimension region) will be handed back to the instrument resource manager.
138              playback_state_t            PlaybackState;      ///< When a sample will be triggered, it will be first played from RAM cache and after a couple of sample points it will switch to disk streaming and at the end of a disk stream we have to add null samples, so the interpolator can do it's work correctly              playback_state_t            PlaybackState;      ///< When a sample will be triggered, it will be first played from RAM cache and after a couple of sample points it will switch to disk streaming and at the end of a disk stream we have to add null samples, so the interpolator can do it's work correctly
139              bool                        DiskVoice;          ///< If the sample is very short it completely fits into the RAM cache and doesn't need to be streamed from disk, in that case this flag is set to false              bool                        DiskVoice;          ///< If the sample is very short it completely fits into the RAM cache and doesn't need to be streamed from disk, in that case this flag is set to false
140              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream
141              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
142              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.
143              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
144              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
145              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
146              EGADSR                      EG1;                ///< Envelope Generator 1 (Amplification)              EGADSR                      EG1;                ///< Envelope Generator 1 (Amplification)
147              EGADSR                      EG2;                ///< Envelope Generator 2 (Filter cutoff frequency)              EGADSR                      EG2;                ///< Envelope Generator 2 (Filter cutoff frequency)
148              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)
             Filter                      FilterLeft;  
             Filter                      FilterRight;  
149              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
150              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
             static const float          FILTER_CUTOFF_COEFF;  
151              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)
152              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)
153              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)
# Line 170  namespace LinuxSampler { namespace gig { Line 159  namespace LinuxSampler { namespace gig {
159              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
160          //private:          //private:
161              int                         SynthesisMode;              int                         SynthesisMode;
   
   
             float                       fFinalPitch;  
             float                       fFinalVolume;  
162              float                       fFinalCutoff;              float                       fFinalCutoff;
163              float                       fFinalResonance;              float                       fFinalResonance;
164                SynthesisParam              finalSynthesisParameters;
165                Loop                        loop;
166    
167              // Static Methods              // Static Methods
168              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
169    
170              // Methods              // Methods
171              void KillImmediately();              Stream::Handle KillImmediately(bool bRequestNotification = false);
172              void ProcessEvents(uint Samples);              void ProcessEvents(uint Samples);
173              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
174              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);
# Line 191  namespace LinuxSampler { namespace gig { Line 178  namespace LinuxSampler { namespace gig {
178              void processCutoffEvent(RTList<Event>::Iterator& itEvent);              void processCutoffEvent(RTList<Event>::Iterator& itEvent);
179              void processResonanceEvent(RTList<Event>::Iterator& itEvent);              void processResonanceEvent(RTList<Event>::Iterator& itEvent);
180    
181              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {              inline uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
182                  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);
183                            : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ?                  c = (!pDimRgn->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
184                                  ((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f                            : (c < pDimRgn->Crossfade.in_end) ?
185                                  : float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))                                  ((c <= pDimRgn->Crossfade.in_start) ? 0
186                            : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f                                  : 127 * (c - pDimRgn->Crossfade.in_start) / (pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))
187                            : (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
188                            : 0.0f;                            : (c < pDimRgn->Crossfade.out_end) ? 127 * (pDimRgn->Crossfade.out_end - c) / (pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
189                  return pDimRgn->InvertAttenuationController ? 1 - att : att;                            : 0;
190                    return pDimRgn->InvertAttenuationController ? 127 - c : c;
191              }              }
192    
193              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
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