/[svn]/linuxsampler/trunk/src/engines/common/AbstractVoice.h
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revision 2061 by persson, Tue Feb 23 18:32:31 2010 UTC revision 2219 by iliev, Thu Jul 28 12:35:49 2011 UTC
# Line 4  Line 4 
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) 2005-2008 Christian Schoenebeck                         *   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *
7   *   Copyright (C) 2009-2010 Christian Schoenebeck and Grigor Iliev        *   *   Copyright (C) 2009-2011 Christian Schoenebeck and Grigor Iliev        *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   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 23  Line 23 
23   ***************************************************************************/   ***************************************************************************/
24    
25  #ifndef __LS_ABSTRACTVOICE_H__  #ifndef __LS_ABSTRACTVOICE_H__
26  #define __LS_ABSTRACTVOICE_H__  #define __LS_ABSTRACTVOICE_H__
27    
28  #include "Voice.h"  #include "Voice.h"
29    
# Line 37  Line 37 
37  #include "../gig/SmoothVolume.h"  #include "../gig/SmoothVolume.h"
38  #include "../gig/Synthesizer.h"  #include "../gig/Synthesizer.h"
39  #include "../gig/Profiler.h"  #include "../gig/Profiler.h"
40    #include "SignalUnitRack.h"
41    
42  // include the appropriate (unsigned) triangle LFO implementation  // include the appropriate (unsigned) triangle LFO implementation
43  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION  #if CONFIG_UNSIGNED_TRIANG_ALGO == INT_MATH_SOLUTION
# Line 80  namespace LinuxSampler { Line 81  namespace LinuxSampler {
81    
82      class AbstractVoice : public Voice {      class AbstractVoice : public Voice {
83          public:          public:
84              type_t       Type;         ///< Voice Type              type_t       Type;         ///< Voice Type (bit field, a voice may have several types)
85              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice              int          MIDIKey;      ///< MIDI key number of the key that triggered the voice
86              uint         KeyGroup;              uint8_t      MIDIVelocity; ///< MIDI velocity of the key that triggered the voice
87                uint8_t      MIDIPan;      ///< the current MIDI pan value
88                
89                SignalUnitRack* const pSignalUnitRack;
90    
91              AbstractVoice();              AbstractVoice(SignalUnitRack* pRack);
92              virtual ~AbstractVoice();              virtual ~AbstractVoice();
93    
94              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
# Line 101  namespace LinuxSampler { Line 105  namespace LinuxSampler {
105              );              );
106    
107              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
108                
109                uint GetSampleRate() { return GetEngine()->SampleRate; }
110    
111              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);
112              void processPitchEvent(RTList<Event>::Iterator& itEvent);              void processPitchEvent(RTList<Event>::Iterator& itEvent);
113              void processResonanceEvent(RTList<Event>::Iterator& itEvent);              void processResonanceEvent(RTList<Event>::Iterator& itEvent);
114              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);
115                void processGroupEvents(RTList<Event>::Iterator& itEvent, uint End);
116              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);
117              void Kill(Pool<Event>::Iterator& itKillEvent);              void Kill(Pool<Event>::Iterator& itKillEvent);
118    
# Line 135  namespace LinuxSampler { Line 142  namespace LinuxSampler {
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              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
144              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)
145              gig::EGADSR                 EG2;                ///< Envelope Generator 2 (Filter cutoff frequency) TODO: use common EG instead of gig              EG*                         pEG2;               ///< Envelope Generator 2 (Filter cutoff frequency)
146              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?
147              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
148              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
# Line 152  namespace LinuxSampler { Line 159  namespace LinuxSampler {
159              float                       fFinalResonance;              float                       fFinalResonance;
160              gig::SynthesisParam         finalSynthesisParameters;              gig::SynthesisParam         finalSynthesisParameters;
161              gig::Loop                   loop;              gig::Loop                   loop;
162                RTList<Event>*              pGroupEvents;        ///< Events directed to an exclusive group
163    
164              virtual AbstractEngine* GetEngine() = 0;              virtual AbstractEngine* GetEngine() = 0;
165              virtual SampleInfo      GetSampleInfo() = 0;              virtual SampleInfo      GetSampleInfo() = 0;
# Line 160  namespace LinuxSampler { Line 167  namespace LinuxSampler {
167              virtual InstrumentInfo  GetInstrumentInfo() = 0;              virtual InstrumentInfo  GetInstrumentInfo() = 0;
168    
169              /**              /**
170                 * Most of the important members of the voice are set when the voice
171                 * is triggered (like pEngineChannel, pRegion, pSample, etc).
172                 * This method is called after these members are set and before
173                 * the voice is actually triggered.
174                 * Override this method if you need to do some additional
175                 * initialization which depends on these members before the voice
176                 * is triggered.
177                 */
178                virtual void AboutToTrigger() { }
179    
180                virtual bool EG1Finished();
181    
182                /**
183               * Gets the sample cache size in bytes.               * Gets the sample cache size in bytes.
184               */               */
185              virtual unsigned long GetSampleCacheSize() = 0;              virtual unsigned long GetSampleCacheSize() = 0;
186                
187                /**
188                 * Because in most cases we cache part of the sample in RAM, if the
189                 * offset is too big (will extend beyond the RAM cache if the cache contains
190                 * the beginning of the sample) we should cache in the RAM buffer not the
191                 * beginning of the sample but a part that starts from the sample offset point.
192                 * In that case the current sample position should start from zero (Pos).
193                 * When the offset fits into RAM buffer or the whole sample is cached
194                 * in RAM, Pos should contain the actual offset.
195                 * We don't trim the sample because it might have a defined
196                 * loop start point before the start point of the playback.
197                 */
198                virtual void SetSampleStartOffset();
199    
200              /**              /**
201               * Returns the correct amplitude factor for the given \a MIDIKeyVelocity.               * Returns the correct amplitude factor for the given \a MIDIKeyVelocity.
# Line 188  namespace LinuxSampler { Line 221  namespace LinuxSampler {
221               */               */
222              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;
223    
224                virtual MidiKeyBase* GetMidiKeyInfo(int MIDIKey) = 0;
225    
226              virtual int   OrderNewStream() = 0;              virtual int   OrderNewStream() = 0;
227    
228              virtual PitchInfo CalculatePitchInfo(int PitchBend);              virtual PitchInfo CalculatePitchInfo(int PitchBend);
# Line 224  namespace LinuxSampler { Line 259  namespace LinuxSampler {
259               */               */
260              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;
261    
262                virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) = 0;
263    
264              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;
265              virtual float CalculateFinalCutoff(float cutoffBase) = 0;              virtual float CalculateFinalCutoff(float cutoffBase) = 0;
266    
# Line 241  namespace LinuxSampler { Line 278  namespace LinuxSampler {
278              virtual double  GetVelocityRelease(uint8_t MIDIKeyVelocity) = 0;              virtual double  GetVelocityRelease(uint8_t MIDIKeyVelocity) = 0;
279    
280              virtual unsigned long GetNoteOnTime(int MIDIKey) = 0;              virtual unsigned long GetNoteOnTime(int MIDIKey) = 0;
281    
282                virtual void    ProcessGroupEvent(RTList<Event>::Iterator& itEvent) = 0;
283                void            EnterReleaseStage();
284      };      };
285  } // namespace LinuxSampler  } // namespace LinuxSampler
286    
287  #endif  /* __LS_ABSTRACTVOICE_H__ */  #endif  /* __LS_ABSTRACTVOICE_H__ */
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