/[svn]/linuxsampler/trunk/src/engines/gig/Voice.h
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revision 770 by schoenebeck, Sun Sep 11 15:56:29 2005 UTC revision 1321 by schoenebeck, Tue Sep 4 01:12:49 2007 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 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 42  Line 40 
40  #include "Filter.h"  #include "Filter.h"
41  #include "../common/LFOBase.h"  #include "../common/LFOBase.h"
42  #include "SynthesisParam.h"  #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 104  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 122  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 134  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              //double                      Pos;                ///< Current playback position in sample              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
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
147              float                       CutoffBase;         ///< Cutoff frequency before control change, EG and LFO are applied              float                       CutoffBase;         ///< Cutoff frequency before control change, EG and LFO are applied
148              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back              ::gig::Sample*              pSample;            ///< Pointer to the sample to be played back
149              ::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
150                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.
151              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
152              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
153              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream
# Line 157  namespace LinuxSampler { namespace gig { Line 161  namespace LinuxSampler { namespace gig {
161              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)              EGDecay                     EG3;                ///< Envelope Generator 3 (Pitch)
162              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
163              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
             static const float          FILTER_CUTOFF_COEFF;  
164              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)              LFOUnsigned*                pLFO1;               ///< Low Frequency Oscillator 1 (Amplification)
165              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)              LFOUnsigned*                pLFO2;               ///< Low Frequency Oscillator 2 (Filter cutoff frequency)
166              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)              LFOSigned*                  pLFO3;               ///< Low Frequency Oscillator 3 (Pitch)
# Line 169  namespace LinuxSampler { namespace gig { Line 172  namespace LinuxSampler { namespace gig {
172              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
173          //private:          //private:
174              int                         SynthesisMode;              int                         SynthesisMode;
             float                       fFinalVolume;  
175              float                       fFinalCutoff;              float                       fFinalCutoff;
176              float                       fFinalResonance;              float                       fFinalResonance;
177              SynthesisParam              finalSynthesisParameters;              SynthesisParam              finalSynthesisParameters;
# Line 179  namespace LinuxSampler { namespace gig { Line 181  namespace LinuxSampler { namespace gig {
181              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
182    
183              // Methods              // Methods
184              void KillImmediately();              Stream::Handle KillImmediately(bool bRequestNotification = false);
185              void ProcessEvents(uint Samples);              void ProcessEvents(uint Samples);
186              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
187              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);
# Line 189  namespace LinuxSampler { namespace gig { Line 191  namespace LinuxSampler { namespace gig {
191              void processCutoffEvent(RTList<Event>::Iterator& itEvent);              void processCutoffEvent(RTList<Event>::Iterator& itEvent);
192              void processResonanceEvent(RTList<Event>::Iterator& itEvent);              void processResonanceEvent(RTList<Event>::Iterator& itEvent);
193    
194              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {              inline uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
195                  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);
196                            : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ?                  c = (!pDimRgn->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
197                                  ((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f                            : (c < pDimRgn->Crossfade.in_end) ?
198                                  : float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))                                  ((c <= pDimRgn->Crossfade.in_start) ? 0
199                            : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f                                  : 127 * (c - pDimRgn->Crossfade.in_start) / (pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))
200                            : (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
201                            : 0.0f;                            : (c < pDimRgn->Crossfade.out_end) ? 127 * (pDimRgn->Crossfade.out_end - c) / (pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
202                  return pDimRgn->InvertAttenuationController ? 1 - att : att;                            : 0;
203                    return pDimRgn->InvertAttenuationController ? 127 - c : c;
204              }              }
205    
206              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
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