/[svn]/linuxsampler/trunk/src/engines/common/AbstractVoice.h
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Diff of /linuxsampler/trunk/src/engines/common/AbstractVoice.h

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revision 2115 by persson, Thu Aug 12 15:36:15 2010 UTC revision 2218 by iliev, Thu Jul 28 08:05:57 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                
88                SignalUnitRack* const pSignalUnitRack;
89    
90              AbstractVoice();              AbstractVoice(SignalUnitRack* pRack);
91              virtual ~AbstractVoice();              virtual ~AbstractVoice();
92    
93              inline bool IsActive() { return PlaybackState; }              inline bool IsActive() { return PlaybackState; }
# Line 100  namespace LinuxSampler { Line 104  namespace LinuxSampler {
104              );              );
105    
106              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
107                
108                uint GetSampleRate() { return GetEngine()->SampleRate; }
109    
110              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);
111              void processPitchEvent(RTList<Event>::Iterator& itEvent);              void processPitchEvent(RTList<Event>::Iterator& itEvent);
# Line 135  namespace LinuxSampler { Line 141  namespace LinuxSampler {
141              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.
142              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
143              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)
144              gig::EGADSR                 EG2;                ///< Envelope Generator 2 (Filter cutoff frequency) TODO: use common EG instead of gig              EG*                         pEG2;               ///< Envelope Generator 2 (Filter cutoff frequency)
145              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?
146              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
147              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
# Line 160  namespace LinuxSampler { Line 166  namespace LinuxSampler {
166              virtual InstrumentInfo  GetInstrumentInfo() = 0;              virtual InstrumentInfo  GetInstrumentInfo() = 0;
167    
168              /**              /**
169                 * Most of the important members of the voice are set when the voice
170                 * is triggered (like pEngineChannel, pRegion, pSample, etc).
171                 * This method is called after these members are set and before
172                 * the voice is actually triggered.
173                 * Override this method if you need to do some additional
174                 * initialization which depends on these members before the voice
175                 * is triggered.
176                 */
177                virtual void AboutToTrigger() { }
178    
179                virtual bool EG1Finished();
180    
181                /**
182               * Gets the sample cache size in bytes.               * Gets the sample cache size in bytes.
183               */               */
184              virtual unsigned long GetSampleCacheSize() = 0;              virtual unsigned long GetSampleCacheSize() = 0;
185                
186                /**
187                 * Because in most cases we cache part of the sample in RAM, if the
188                 * offset is too big (will extend beyond the RAM cache if the cache contains
189                 * the beginning of the sample) we should cache in the RAM buffer not the
190                 * beginning of the sample but a part that starts from the sample offset point.
191                 * In that case the current sample position should start from zero (Pos).
192                 * When the offset fits into RAM buffer or the whole sample is cached
193                 * in RAM, Pos should contain the actual offset.
194                 * We don't trim the sample because it might have a defined
195                 * loop start point before the start point of the playback.
196                 */
197                virtual void SetSampleStartOffset();
198    
199              /**              /**
200               * 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 220  namespace LinuxSampler {
220               */               */
221              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;
222    
223                virtual MidiKeyBase* GetMidiKeyInfo(int MIDIKey) = 0;
224    
225              virtual int   OrderNewStream() = 0;              virtual int   OrderNewStream() = 0;
226    
227              virtual PitchInfo CalculatePitchInfo(int PitchBend);              virtual PitchInfo CalculatePitchInfo(int PitchBend);
# Line 224  namespace LinuxSampler { Line 258  namespace LinuxSampler {
258               */               */
259              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;
260    
261                virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) = 0;
262    
263              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;
264              virtual float CalculateFinalCutoff(float cutoffBase) = 0;              virtual float CalculateFinalCutoff(float cutoffBase) = 0;
265    
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