/[svn]/linuxsampler/trunk/src/engines/common/AbstractVoice.h
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revision 2115 by persson, Thu Aug 12 15:36:15 2010 UTC revision 2216 by iliev, Mon Jul 25 17:21:16 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 100  namespace LinuxSampler { Line 101  namespace LinuxSampler {
101              );              );
102    
103              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);              virtual void Synthesize(uint Samples, sample_t* pSrc, uint Skip);
104                
105                uint GetSampleRate() { return GetEngine()->SampleRate; }
106                
107                virtual SignalUnitRack* GetSignalUnitRack() { return NULL; }
108    
109              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);              void processCCEvents(RTList<Event>::Iterator& itEvent, uint End);
110              void processPitchEvent(RTList<Event>::Iterator& itEvent);              void processPitchEvent(RTList<Event>::Iterator& itEvent);
# Line 135  namespace LinuxSampler { Line 140  namespace LinuxSampler {
140              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.
141              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
142              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)              EG*                         pEG1;               ///< Envelope Generator 1 (Amplification)
143              gig::EGADSR                 EG2;                ///< Envelope Generator 2 (Filter cutoff frequency) TODO: use common EG instead of gig              EG*                         pEG2;               ///< Envelope Generator 2 (Filter cutoff frequency)
144              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?              gig::EGDecay                EG3;                ///< Envelope Generator 3 (Pitch) TODO: use common EG instead?
145              midi_ctrl                   VCFCutoffCtrl;              midi_ctrl                   VCFCutoffCtrl;
146              midi_ctrl                   VCFResonanceCtrl;              midi_ctrl                   VCFResonanceCtrl;
# Line 160  namespace LinuxSampler { Line 165  namespace LinuxSampler {
165              virtual InstrumentInfo  GetInstrumentInfo() = 0;              virtual InstrumentInfo  GetInstrumentInfo() = 0;
166    
167              /**              /**
168                 * Most of the important members of the voice are set when the voice
169                 * is triggered (like pEngineChannel, pRegion, pSample, etc).
170                 * This method is called after these members are set and before
171                 * the voice is actually triggered.
172                 * Override this method if you need to do some additional
173                 * initialization which depends on these members before the voice
174                 * is triggered.
175                 */
176                virtual void AboutToTrigger() { }
177    
178                virtual bool EG1Finished();
179    
180                /**
181               * Gets the sample cache size in bytes.               * Gets the sample cache size in bytes.
182               */               */
183              virtual unsigned long GetSampleCacheSize() = 0;              virtual unsigned long GetSampleCacheSize() = 0;
184                
185                /**
186                 * Because in most cases we cache part of the sample in RAM, if the
187                 * offset is too big (will extend beyond the RAM cache if the cache contains
188                 * the beginning of the sample) we should cache in the RAM buffer not the
189                 * beginning of the sample but a part that starts from the sample offset point.
190                 * In that case the current sample position should start from zero (Pos).
191                 * When the offset fits into RAM buffer or the whole sample is cached
192                 * in RAM, Pos should contain the actual offset.
193                 * We don't trim the sample because it might have a defined
194                 * loop start point before the start point of the playback.
195                 */
196                virtual void SetSampleStartOffset();
197    
198              /**              /**
199               * 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 219  namespace LinuxSampler {
219               */               */
220              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;              virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) = 0;
221    
222                virtual MidiKeyBase* GetMidiKeyInfo(int MIDIKey) = 0;
223    
224              virtual int   OrderNewStream() = 0;              virtual int   OrderNewStream() = 0;
225    
226              virtual PitchInfo CalculatePitchInfo(int PitchBend);              virtual PitchInfo CalculatePitchInfo(int PitchBend);
# Line 224  namespace LinuxSampler { Line 257  namespace LinuxSampler {
257               */               */
258              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;              virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) = 0;
259    
260                virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) = 0;
261    
262              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;              virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) = 0;
263              virtual float CalculateFinalCutoff(float cutoffBase) = 0;              virtual float CalculateFinalCutoff(float cutoffBase) = 0;
264    
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