/[svn]/linuxsampler/trunk/src/engines/common/AbstractVoice.h
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revision 2121 by schoenebeck, Tue Sep 14 17:09:08 2010 UTC revision 2298 by iliev, Fri Dec 9 17:04:24 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 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 82  namespace LinuxSampler { Line 83  namespace LinuxSampler {
83          public:          public:
84              type_t       Type;         ///< Voice Type (bit field, a voice may have several types)              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                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 99  namespace LinuxSampler { Line 104  namespace LinuxSampler {
104                  int                     iKeyGroup                  int                     iKeyGroup
105              );              );
106    
107                /** Invoked when the voice is freed - gone from active to inactive. */
108                virtual void VoiceFreed() { }
109    
110              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
111                
112                uint GetSampleRate() { return GetEngine()->SampleRate; }
113                
114                uint8_t GetControllerValue(uint8_t Controller) {
115                    return (Controller > 128) ? 0 : pEngineChannel->ControllerTable[Controller];
116                }
117    
118              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);
119              void processPitchEvent(RTList<Event>::Iterator& itEvent);              void processPitchEvent(RTList<Event>::Iterator& itEvent);
# Line 108  namespace LinuxSampler { Line 122  namespace LinuxSampler {
122              void processGroupEvents(RTList<Event>::Iterator& itEvent, uint End);              void processGroupEvents(RTList<Event>::Iterator& itEvent, uint End);
123              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);              void UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent);
124              void Kill(Pool<Event>::Iterator& itKillEvent);              void Kill(Pool<Event>::Iterator& itKillEvent);
125                void CreateEq();
126    
127              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.              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.
128              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
# Line 135  namespace LinuxSampler { Line 150  namespace LinuxSampler {
150              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.
151              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
152              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)
153              gig::EGADSR                 EG2;                ///< Envelope Generator 2 (Filter cutoff frequency) TODO: use common EG instead of gig              EG*                         pEG2;               ///< Envelope Generator 2 (Filter cutoff frequency)
154              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?
155              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
156              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
# Line 153  namespace LinuxSampler { Line 168  namespace LinuxSampler {
168              gig::SynthesisParam         finalSynthesisParameters;              gig::SynthesisParam         finalSynthesisParameters;
169              gig::Loop                   loop;              gig::Loop                   loop;
170              RTList<Event>*              pGroupEvents;        ///< Events directed to an exclusive group              RTList<Event>*              pGroupEvents;        ///< Events directed to an exclusive group
171                
172                EqSupport* pEq;         ///< Used for per voice equalization
173                bool       bEqSupport;
174                
175                void PrintEqInfo() {
176                    if (!bEqSupport || pEq == NULL) {
177                        dmsg(1,("EQ support: no\n"));
178                    } else {
179                        pEq->PrintInfo();
180                    }
181                }
182    
183              virtual AbstractEngine* GetEngine() = 0;              virtual AbstractEngine* GetEngine() = 0;
184              virtual SampleInfo      GetSampleInfo() = 0;              virtual SampleInfo      GetSampleInfo() = 0;
# Line 160  namespace LinuxSampler { Line 186  namespace LinuxSampler {
186              virtual InstrumentInfo  GetInstrumentInfo() = 0;              virtual InstrumentInfo  GetInstrumentInfo() = 0;
187    
188              /**              /**
189                 * Most of the important members of the voice are set when the voice
190                 * is triggered (like pEngineChannel, pRegion, pSample, etc).
191                 * This method is called after these members are set and before
192                 * the voice is actually triggered.
193                 * Override this method if you need to do some additional
194                 * initialization which depends on these members before the voice
195                 * is triggered.
196                 */
197                virtual void AboutToTrigger() { }
198    
199                virtual bool EG1Finished();
200    
201                /**
202               * Gets the sample cache size in bytes.               * Gets the sample cache size in bytes.
203               */               */
204              virtual unsigned long GetSampleCacheSize() = 0;              virtual unsigned long GetSampleCacheSize() = 0;
205                
206                /**
207                 * Because in most cases we cache part of the sample in RAM, if the
208                 * offset is too big (will extend beyond the RAM cache if the cache contains
209                 * the beginning of the sample) we should cache in the RAM buffer not the
210                 * beginning of the sample but a part that starts from the sample offset point.
211                 * In that case the current sample position should start from zero (Pos).
212                 * When the offset fits into RAM buffer or the whole sample is cached
213                 * in RAM, Pos should contain the actual offset.
214                 * We don't trim the sample because it might have a defined
215                 * loop start point before the start point of the playback.
216                 */
217                virtual void SetSampleStartOffset();
218    
219              /**              /**
220               * Returns the correct amplitude factor for the given \a MIDIKeyVelocity.               * Returns the correct amplitude factor for the given \a MIDIKeyVelocity.
# Line 226  namespace LinuxSampler { Line 278  namespace LinuxSampler {
278               */               */
279              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;
280    
281                virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) = 0;
282    
283              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;
284              virtual float CalculateFinalCutoff(float cutoffBase) = 0;              virtual float CalculateFinalCutoff(float cutoffBase) = 0;
285    
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