/[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 2224 by iliev, Mon Aug 1 19:08:09 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                uint8_t GetControllerValue(uint8_t Controller) {
112                    return (Controller > 128) ? 0 : pEngineChannel->ControllerTable[Controller];
113                }
114    
115              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);
116              void processPitchEvent(RTList<Event>::Iterator& itEvent);              void processPitchEvent(RTList<Event>::Iterator& itEvent);
117              void processResonanceEvent(RTList<Event>::Iterator& itEvent);              void processResonanceEvent(RTList<Event>::Iterator& itEvent);
118              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);              void processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End);
119                void processGroupEvents(RTList<Event>::Iterator& itEvent, uint End);
120              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);
121              void Kill(Pool<Event>::Iterator& itKillEvent);              void Kill(Pool<Event>::Iterator& itKillEvent);
122    
# Line 135  namespace LinuxSampler { Line 146  namespace LinuxSampler {
146              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.
147              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
148              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)
149              gig::EGADSR                 EG2;                ///< Envelope Generator 2 (Filter cutoff frequency) TODO: use common EG instead of gig              EG*                         pEG2;               ///< Envelope Generator 2 (Filter cutoff frequency)
150              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?
151              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
152              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
# Line 152  namespace LinuxSampler { Line 163  namespace LinuxSampler {
163              float                       fFinalResonance;              float                       fFinalResonance;
164              gig::SynthesisParam         finalSynthesisParameters;              gig::SynthesisParam         finalSynthesisParameters;
165              gig::Loop                   loop;              gig::Loop                   loop;
166                RTList<Event>*              pGroupEvents;        ///< Events directed to an exclusive group
167    
168              virtual AbstractEngine* GetEngine() = 0;              virtual AbstractEngine* GetEngine() = 0;
169              virtual SampleInfo      GetSampleInfo() = 0;              virtual SampleInfo      GetSampleInfo() = 0;
# Line 160  namespace LinuxSampler { Line 171  namespace LinuxSampler {
171              virtual InstrumentInfo  GetInstrumentInfo() = 0;              virtual InstrumentInfo  GetInstrumentInfo() = 0;
172    
173              /**              /**
174                 * Most of the important members of the voice are set when the voice
175                 * is triggered (like pEngineChannel, pRegion, pSample, etc).
176                 * This method is called after these members are set and before
177                 * the voice is actually triggered.
178                 * Override this method if you need to do some additional
179                 * initialization which depends on these members before the voice
180                 * is triggered.
181                 */
182                virtual void AboutToTrigger() { }
183    
184                virtual bool EG1Finished();
185    
186                /**
187               * Gets the sample cache size in bytes.               * Gets the sample cache size in bytes.
188               */               */
189              virtual unsigned long GetSampleCacheSize() = 0;              virtual unsigned long GetSampleCacheSize() = 0;
190                
191                /**
192                 * Because in most cases we cache part of the sample in RAM, if the
193                 * offset is too big (will extend beyond the RAM cache if the cache contains
194                 * the beginning of the sample) we should cache in the RAM buffer not the
195                 * beginning of the sample but a part that starts from the sample offset point.
196                 * In that case the current sample position should start from zero (Pos).
197                 * When the offset fits into RAM buffer or the whole sample is cached
198                 * in RAM, Pos should contain the actual offset.
199                 * We don't trim the sample because it might have a defined
200                 * loop start point before the start point of the playback.
201                 */
202                virtual void SetSampleStartOffset();
203    
204              /**              /**
205               * 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 225  namespace LinuxSampler {
225               */               */
226              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;
227    
228                virtual MidiKeyBase* GetMidiKeyInfo(int MIDIKey) = 0;
229    
230              virtual int   OrderNewStream() = 0;              virtual int   OrderNewStream() = 0;
231    
232              virtual PitchInfo CalculatePitchInfo(int PitchBend);              virtual PitchInfo CalculatePitchInfo(int PitchBend);
# Line 224  namespace LinuxSampler { Line 263  namespace LinuxSampler {
263               */               */
264              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;
265    
266                virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) = 0;
267    
268              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;
269              virtual float CalculateFinalCutoff(float cutoffBase) = 0;              virtual float CalculateFinalCutoff(float cutoffBase) = 0;
270    
# Line 241  namespace LinuxSampler { Line 282  namespace LinuxSampler {
282              virtual double  GetVelocityRelease(uint8_t MIDIKeyVelocity) = 0;              virtual double  GetVelocityRelease(uint8_t MIDIKeyVelocity) = 0;
283    
284              virtual unsigned long GetNoteOnTime(int MIDIKey) = 0;              virtual unsigned long GetNoteOnTime(int MIDIKey) = 0;
285    
286                virtual void    ProcessGroupEvent(RTList<Event>::Iterator& itEvent) = 0;
287                void            EnterReleaseStage();
288      };      };
289  } // namespace LinuxSampler  } // namespace LinuxSampler
290    
291  #endif  /* __LS_ABSTRACTVOICE_H__ */  #endif  /* __LS_ABSTRACTVOICE_H__ */
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