/[svn]/linuxsampler/trunk/src/engines/gig/Voice.h
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revision 319 by schoenebeck, Mon Dec 13 00:46:42 2004 UTC revision 502 by letz, Fri Apr 29 14:20:22 2005 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                              *
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 35  Line 36 
36  #include "../../drivers/audio/AudioOutputDevice.h"  #include "../../drivers/audio/AudioOutputDevice.h"
37  #include "../../lib/fileloader/libgig/gig.h"  #include "../../lib/fileloader/libgig/gig.h"
38  #include "../common/BiquadFilter.h"  #include "../common/BiquadFilter.h"
39    //#include "EngineGlobals.h"
40  #include "Engine.h"  #include "Engine.h"
41    #include "EngineChannel.h"
42  #include "Stream.h"  #include "Stream.h"
43  #include "DiskThread.h"  #include "DiskThread.h"
44    
# Line 43  Line 46 
46  #include "Filter.h"  #include "Filter.h"
47  #include "../common/LFO.h"  #include "../common/LFO.h"
48    
 #define FILTER_UPDATE_PERIOD            64 ///< amount of sample points after which filter parameters (cutoff, resonance) are going to be updated (higher value means less CPU load, but also worse parameter resolution, this value will be aligned to a power of two)  
 #define FORCE_FILTER_USAGE              0  ///< if set to 1 then filter is always used, if set to 0 filter is used only in case the instrument file defined one  
 #define FILTER_CUTOFF_MAX               10000.0f ///< maximum cutoff frequency (10kHz)  
 #define FILTER_CUTOFF_MIN               100.0f   ///< minimum cutoff frequency (100Hz)  
   
 // Uncomment following line to override external cutoff controller  
 //#define OVERRIDE_FILTER_CUTOFF_CTRL   1  ///< set to an arbitrary MIDI control change controller (e.g. 1 for 'modulation wheel')  
   
 // Uncomment following line to override external resonance controller  
 //#define OVERRIDE_FILTER_RES_CTRL      91  ///< set to an arbitrary MIDI control change controller (e.g. 91 for 'effect 1 depth')  
   
 // Uncomment following line to override filter type  
 //#define OVERRIDE_FILTER_TYPE          ::gig::vcf_type_lowpass  ///< either ::gig::vcf_type_lowpass, ::gig::vcf_type_bandpass or ::gig::vcf_type_highpass  
   
49  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
50    
51      class Engine;      class Engine;
52      class EGADSR;      class EGADSR;
53        class EGDecay;
54      class VCAManipulator;      class VCAManipulator;
55      class VCFCManipulator;      class VCFCManipulator;
56      class VCOManipulator;      class VCOManipulator;
# Line 90  namespace LinuxSampler { namespace gig { Line 80  namespace LinuxSampler { namespace gig {
80              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice
81              uint         KeyGroup;              uint         KeyGroup;
82              DiskThread*  pDiskThread;  ///< Pointer to the disk thread, to be able to order a disk stream and later to delete the stream again              DiskThread*  pDiskThread;  ///< Pointer to the disk thread, to be able to order a disk stream and later to delete the stream again
             RTList<Voice>::Iterator itChildVoice; ///< Points to the next layer voice (if any). This field is currently only used by the voice stealing algorithm.  
83    
84              // Methods              // Methods
85              Voice();              Voice();
86             ~Voice();              virtual ~Voice();
87              void Kill(Pool<Event>::Iterator& itKillEvent);              void Kill(Pool<Event>::Iterator& itKillEvent);
88              void Render(uint Samples);              void Render(uint Samples);
89              void Reset();              void Reset();
90              void SetOutput(AudioOutputDevice* pAudioOutputDevice);              void SetOutput(AudioOutputDevice* pAudioOutputDevice);
91              void SetEngine(Engine* pEngine);              void SetEngine(Engine* pEngine);
92              int  Trigger(Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);              int  Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealingAllowed);
93              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
94          //private:          //private:
95              // Types              // Types
# Line 111  namespace LinuxSampler { namespace gig { Line 100  namespace LinuxSampler { namespace gig {
100              };              };
101    
102              // Attributes              // Attributes
103              gig::Engine*                pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.              EngineChannel*              pEngineChannel;
104                Engine*                     pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.
105              float                       Volume;             ///< Volume level of the voice              float                       Volume;             ///< Volume level of the voice
106              float                       PanLeft;              float                       PanLeft;
107              float                       PanRight;              float                       PanRight;
# Line 125  namespace LinuxSampler { namespace gig { Line 115  namespace LinuxSampler { namespace gig {
115              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
116              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
117              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream
118                int                         RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator
119              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.
120              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
121              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
# Line 150  namespace LinuxSampler { namespace gig { Line 141  namespace LinuxSampler { namespace gig {
141              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
142          //private:          //private:
143              int                         SynthesisMode;              int                         SynthesisMode;
             void*                       SynthesizeFragmentFnPtr; ///< Points to the respective synthesis function for the current synthesis mode.  
144    
145              // Static Methods              // Static Methods
146              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
# Line 160  namespace LinuxSampler { namespace gig { Line 150  namespace LinuxSampler { namespace gig {
150              void KillImmediately();              void KillImmediately();
151              void ProcessEvents(uint Samples);              void ProcessEvents(uint Samples);
152              void CalculateBiquadParameters(uint Samples);              void CalculateBiquadParameters(uint Samples);
153              void UpdateSynthesisMode();              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
             void Synthesize(uint Samples, sample_t* pSrc, int Skip);  
154    
155              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
156                  return (CrossfadeControllerValue <= pDimRgn->Crossfade.in_start)  ? 0.0f                  float att = (!pDimRgn->Crossfade.out_end) ? CrossfadeControllerValue / 127.0f /* 0,0,0,0 means no crossfade defined */
157                       : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end)     ? float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start)                            : (CrossfadeControllerValue < pDimRgn->Crossfade.in_end) ?
158                       : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f                                  ((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f
159                       : (CrossfadeControllerValue < pDimRgn->Crossfade.out_end)    ? float(CrossfadeControllerValue - pDimRgn->Crossfade.out_start) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)                                  : float(CrossfadeControllerValue - pDimRgn->Crossfade.in_start) / float(pDimRgn->Crossfade.in_end - pDimRgn->Crossfade.in_start))
160                       : 0.0f;                            : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f
161                              : (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(pDimRgn->Crossfade.out_end - CrossfadeControllerValue) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
162                              : 0.0f;
163                    return pDimRgn->InvertAttenuationController ? 1 - att : att;
164              }              }
165    
166              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
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