/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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revision 475 by schoenebeck, Thu Mar 17 23:56:56 2005 UTC revision 1789 by iliev, Sat Nov 1 19:01:27 2008 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
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 Christian Schoenebeck                              *   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   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 26  Line 26 
26    
27  #include "../../common/global.h"  #include "../../common/global.h"
28    
 #if DEBUG_HEADERS  
 # warning Engine.h included  
 #endif // DEBUG_HEADERS  
   
29  #include <map>  #include <map>
30    #include <gig.h>
31    
32  #include "EngineGlobals.h"  #include "EngineGlobals.h"
33  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
34  #include "../../common/Pool.h"  #include "../../common/Pool.h"
35  #include "../../common/ArrayList.h"  #include "../../common/ArrayList.h"
36    #include "../../common/Condition.h"
37  #include "../../common/ConditionServer.h"  #include "../../common/ConditionServer.h"
38  #include "../common/Engine.h"  #include "../Engine.h"
39  #include "../common/Event.h"  #include "../common/Event.h"
 #include "../common/BiquadFilter.h"  
 #include "../../lib/fileloader/libgig/gig.h"  
40  #include "../../network/lscp.h"  #include "../../network/lscp.h"
41  #include "EngineChannel.h"  #include "EngineChannel.h"
42    
43  // identifier of this sampler engine  // identifier of this sampler engine
44  #define LS_GIG_ENGINE_NAME "GigEngine"  #define LS_GIG_ENGINE_NAME "GIG"
45    
46  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
47    
# Line 63  namespace LinuxSampler { namespace gig { Line 59  namespace LinuxSampler { namespace gig {
59          public:          public:
60              // methods              // methods
61              Engine();              Engine();
62             ~Engine();              virtual ~Engine();
63              void Connect(AudioOutputDevice* pAudioOut);              void Connect(AudioOutputDevice* pAudioOut);
64                void SuspendAll();
65                void ResumeAll();
66                void Suspend(::gig::Region* pRegion);
67                void Resume(::gig::Region* pRegion);
68    
69              // implementation of abstract methods derived from class 'LinuxSampler::Engine'              // implementation of abstract methods derived from class 'LinuxSampler::Engine'
70              virtual int    RenderAudio(uint Samples);              virtual int    RenderAudio(uint Samples);
71              virtual void   SendSysex(void* pData, uint Size);              virtual void   SendSysex(void* pData, uint Size, MidiInputPort* pSender);
72              virtual void   Reset();              virtual void   Reset();
73              virtual void   Enable();              virtual void   Enable();
74              virtual void   Disable();              virtual void   Disable();
# Line 82  namespace LinuxSampler { namespace gig { Line 82  namespace LinuxSampler { namespace gig {
82              virtual String Description();              virtual String Description();
83              virtual String Version();              virtual String Version();
84              virtual String EngineName();              virtual String EngineName();
85                virtual InstrumentManager* GetInstrumentManager();
86    
87                void SetVoiceCount(uint Count);
88    
89                // Simple array wrapper just to make sure memory is freed
90                // when liblinuxsampler is unloaded
91                class FloatTable {
92                private:
93                    const float* array;
94                public:
95                    FloatTable(const float* array) : array(array) { }
96                    ~FloatTable() { delete[] array; }
97                    const float& operator[](int i) const { return array[i]; }
98                };
99    
100                static const FloatTable VolumeCurve;    ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.
101                static const FloatTable PanCurve;       ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).
102                static const FloatTable CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.
103    
104          //protected:          //protected:
105              static InstrumentResourceManager instruments;              static InstrumentResourceManager instruments;
# Line 90  namespace LinuxSampler { namespace gig { Line 108  namespace LinuxSampler { namespace gig {
108              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)
109              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer
110              DiskThread*             pDiskThread;              DiskThread*             pDiskThread;
111              RingBuffer<Event>*      pEventQueue;           ///< Input event queue for engine global events (e.g. SysEx messages).              RingBuffer<Event,false>* pEventQueue;          ///< Input event queue for engine global events (e.g. SysEx messages).
112              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
113              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
114              RTList<Event>*          pVoiceStealingQueue;   ///< All voice-launching events which had to be postponed due to free voice shortage.              RTList<Event>*          pVoiceStealingQueue;   ///< All voice-launching events which had to be postponed due to free voice shortage.
115              RTList<Event>*          pGlobalEvents;         ///< All engine global events for the current audio fragment (usually only SysEx messages).              RTList<Event>*          pGlobalEvents;         ///< All engine global events for the current audio fragment (usually only SysEx messages).
116              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
117              RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.              RingBuffer<uint8_t,false>* pSysexBuffer;       ///< Input buffer for MIDI system exclusive messages.
             float*                  pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.  
             biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.  
             biquad_param_t*         pMainFilterParameters;  ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).  
             int                     ActiveVoiceCount;      ///< number of currently active voices (this value will be returned for public calls)  
118              int                     ActiveVoiceCountTemp;  ///< number of currently active voices (for internal usage, will be used for incrementation)              int                     ActiveVoiceCountTemp;  ///< number of currently active voices (for internal usage, will be used for incrementation)
119              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
120              int                     VoiceTheftsLeft;       ///< We only allow MAX_AUDIO_VOICES voices to be stolen per audio fragment, we use this variable to ensure this limit.              int                     VoiceSpawnsLeft;       ///< We only allow CONFIG_MAX_VOICES voices to be spawned per audio fragment, we use this variable to ensure this limit.
121              RTList<Voice>::Iterator itLastStolenVoice;     ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.              RTList<Voice>::Iterator itLastStolenVoice;     ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
122              RTList<uint>::Iterator  iuiLastStolenKey;      ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.              RTList<uint>::Iterator  iuiLastStolenKey;      ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.
123              EngineChannel*          pLastStolenChannel;    ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.              EngineChannel*          pLastStolenChannel;    ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.
124                RTList<Voice>::Iterator itLastStolenVoiceGlobally; ///< Same as itLastStolenVoice, but engine globally
125                RTList<uint>::Iterator  iuiLastStolenKeyGlobally;  ///< Same as iuiLastStolenKey, but engine globally
126              bool                    SuspensionRequested;              bool                    SuspensionRequested;
127              ConditionServer         EngineDisabled;              ConditionServer         EngineDisabled;
128              int8_t                  ScaleTuning[12];       ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave              int8_t                  ScaleTuning[12];       ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave
129              int                     MaxFadeOutPos;         ///< The last position in an audio fragment to allow an instant fade out (e.g. for voice stealing) without leading to clicks.              int                     MinFadeOutSamples;     ///< The number of samples needed to make an instant fade out (e.g. for voice stealing) without leading to clicks.
130              uint32_t                RandomSeed;            ///< State of the random number generator used by the random dimension.              uint32_t                RandomSeed;            ///< State of the random number generator used by the random dimension.
131                Mutex                   ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
132                Pool< ::gig::DimensionRegion*>* pDimRegionPool[2]; ///< Double buffered pool, used by the engine channels to keep track of dimension regions in use.
133    
134              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);
135              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);
136              void RenderStolenVoices(uint Samples);              void RenderStolenVoices(uint Samples);
137                void RouteAudio(EngineChannel* pEngineChannel, uint Samples);
138              void PostProcess(EngineChannel* pEngineChannel);              void PostProcess(EngineChannel* pEngineChannel);
139              void ClearEventLists();              void ClearEventLists();
140              void ImportEvents(uint Samples);              void ImportEvents(uint Samples);
# Line 124  namespace LinuxSampler { namespace gig { Line 143  namespace LinuxSampler { namespace gig {
143              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
144              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
145              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
146              Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);              void ProcessSuspensionsChanges();
147                void ProcessPendingStreamDeletions();
148                Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts);
149              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
150              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
151              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
             void ResetSynthesisParameters(Event::destination_t dst, float val);  
152              void ResetInternal();              void ResetInternal();
153                void ResetScaleTuning();
154                void ResetSuspendedRegions();
155    
156              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
157              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
# Line 137  namespace LinuxSampler { namespace gig { Line 159  namespace LinuxSampler { namespace gig {
159              void DisableAndLock(); // FIXME: should at least be protected              void DisableAndLock(); // FIXME: should at least be protected
160    
161              friend class Voice;              friend class Voice;
             friend class EGADSR;  
             friend class EGDecay;  
             friend class VCAManipulator;  
             friend class VCFCManipulator;  
             friend class VCOManipulator;  
162          private:          private:
163                Pool< ::gig::Region*> SuspendedRegions;
164                Mutex                 SuspendedRegionsMutex;
165                Condition             SuspensionChangeOngoing;
166                ::gig::Region*        pPendingRegionSuspension;
167                ::gig::Region*        pPendingRegionResumption;
168                int                   iPendingStreamDeletions;
169    
170              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
171    
172              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
173    
174              uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);              int SostenutoKeys[128];
175                int SostenutoKeyCount;
176    
177                uint8_t GSCheckSum(const RingBuffer<uint8_t,false>::NonVolatileReader AddrReader, uint DataSize);
178              void    AdjustScale(int8_t ScaleTunes[12]);              void    AdjustScale(int8_t ScaleTunes[12]);
179              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);
180              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);
181                bool    ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key);
182                bool    RegionSuspended(::gig::Region* pRegion);
183                static float* InitVolumeCurve();
184                static float* InitPanCurve();
185                static float* InitCrossfadeCurve();
186                static float* InitCurve(const float* segments, int size = 128);
187    
188                unsigned long FrameTime; ///< Time in frames of the start of the current audio fragment
189    
190                atomic_t ActiveVoiceCount; ///< number of currently active voices
191                
192      };      };
193    
194  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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