/[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 411 by schoenebeck, Sat Feb 26 02:01:14 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 100  namespace LinuxSampler { namespace gig { Line 90  namespace LinuxSampler { namespace gig {
90              void Reset();              void Reset();
91              void SetOutput(AudioOutputDevice* pAudioOutputDevice);              void SetOutput(AudioOutputDevice* pAudioOutputDevice);
92              void SetEngine(Engine* pEngine);              void SetEngine(Engine* pEngine);
93              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 VoiceStealing);
94              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
95          //private:          //private:
96              // Types              // Types
# Line 111  namespace LinuxSampler { namespace gig { Line 101  namespace LinuxSampler { namespace gig {
101              };              };
102    
103              // Attributes              // Attributes
104              gig::Engine*                pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.              EngineChannel*              pEngineChannel;
105                Engine*                     pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.
106              float                       Volume;             ///< Volume level of the voice              float                       Volume;             ///< Volume level of the voice
107              float                       PanLeft;              float                       PanLeft;
108              float                       PanRight;              float                       PanRight;
# Line 125  namespace LinuxSampler { namespace gig { Line 116  namespace LinuxSampler { namespace gig {
116              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
117              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
118              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream              Stream::reference_t         DiskStreamRef;      ///< Reference / link to the disk stream
119                int                         RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator
120              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.
121              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
122              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 142  namespace LinuxSampler { namespace gig {
142              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed              Pool<Event>::Iterator       itKillEvent;         ///< Event which caused this voice to be killed
143          //private:          //private:
144              int                         SynthesisMode;              int                         SynthesisMode;
             void*                       SynthesizeFragmentFnPtr; ///< Points to the respective synthesis function for the current synthesis mode.  
145    
146              // Static Methods              // Static Methods
147              static float CalculateFilterCutoffCoeff();              static float CalculateFilterCutoffCoeff();
# Line 160  namespace LinuxSampler { namespace gig { Line 151  namespace LinuxSampler { namespace gig {
151              void KillImmediately();              void KillImmediately();
152              void ProcessEvents(uint Samples);              void ProcessEvents(uint Samples);
153              void CalculateBiquadParameters(uint Samples);              void CalculateBiquadParameters(uint Samples);
154              void UpdateSynthesisMode();              void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
             void Synthesize(uint Samples, sample_t* pSrc, int Skip);  
155    
156              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {              inline float CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
157                  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 */
158                       : (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) ?
159                       : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f                                  ((CrossfadeControllerValue <= pDimRgn->Crossfade.in_start) ? 0.0f
160                       : (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))
161                       : 0.0f;                            : (CrossfadeControllerValue <= pDimRgn->Crossfade.out_start) ? 1.0f
162                              : (CrossfadeControllerValue < pDimRgn->Crossfade.out_end) ? float(pDimRgn->Crossfade.out_end - CrossfadeControllerValue) / float(pDimRgn->Crossfade.out_end - pDimRgn->Crossfade.out_start)
163                              : 0.0f;
164                    return pDimRgn->InvertAttenuationController ? 1 - att : att;
165              }              }
166    
167              inline float Constrain(float ValueToCheck, float Min, float Max) {              inline float Constrain(float ValueToCheck, float Min, float Max) {
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