/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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revision 831 by persson, Sat Jan 28 16:55:30 2006 UTC revision 1879 by schoenebeck, Sun Mar 29 18:43:40 2009 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) 2005-2009 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 33  Line 33 
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 "../../common/atomic.h"
39    #include "../Engine.h"
40  #include "../common/Event.h"  #include "../common/Event.h"
41  #include "../../network/lscp.h"  #include "../../network/lscp.h"
42  #include "EngineChannel.h"  #include "EngineChannel.h"
# Line 60  namespace LinuxSampler { namespace gig { Line 62  namespace LinuxSampler { namespace gig {
62              Engine();              Engine();
63              virtual ~Engine();              virtual ~Engine();
64              void Connect(AudioOutputDevice* pAudioOut);              void Connect(AudioOutputDevice* pAudioOut);
65                void SuspendAll();
66                void ResumeAll();
67                void Suspend(::gig::Region* pRegion);
68                void Resume(::gig::Region* pRegion);
69    
70              // implementation of abstract methods derived from class 'LinuxSampler::Engine'              // implementation of abstract methods derived from class 'LinuxSampler::Engine'
71              virtual int    RenderAudio(uint Samples);              virtual int    RenderAudio(uint Samples);
72              virtual void   SendSysex(void* pData, uint Size);              virtual void   SendSysex(void* pData, uint Size, MidiInputPort* pSender);
73              virtual void   Reset();              virtual void   Reset();
74              virtual void   Enable();              virtual void   Enable();
75              virtual void   Disable();              virtual void   Disable();
76              virtual uint   VoiceCount();              virtual uint   VoiceCount();
77              virtual uint   VoiceCountMax();              virtual uint   VoiceCountMax();
78                virtual int    MaxVoices();
79                virtual void   SetMaxVoices(int iVoices) throw (Exception);
80              virtual bool   DiskStreamSupported();              virtual bool   DiskStreamSupported();
81              virtual uint   DiskStreamCount();              virtual uint   DiskStreamCount();
82              virtual uint   DiskStreamCountMax();              virtual uint   DiskStreamCountMax();
83                virtual int    MaxDiskStreams();
84                virtual void   SetMaxDiskStreams(int iStreams) throw (Exception);
85              virtual String DiskStreamBufferFillBytes();              virtual String DiskStreamBufferFillBytes();
86              virtual String DiskStreamBufferFillPercentage();              virtual String DiskStreamBufferFillPercentage();
87              virtual String Description();              virtual String Description();
88              virtual String Version();              virtual String Version();
89              virtual String EngineName();              virtual String EngineName();
90                virtual InstrumentManager* GetInstrumentManager();
91    
92              static const float* VolumeCurve; ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.              void SetVoiceCount(uint Count);
93              static const float* PanCurve;    ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).  
94                // Simple array wrapper just to make sure memory is freed
95                // when liblinuxsampler is unloaded
96                class FloatTable {
97                private:
98                    const float* array;
99                public:
100                    FloatTable(const float* array) : array(array) { }
101                    ~FloatTable() { delete[] array; }
102                    const float& operator[](int i) const { return array[i]; }
103                };
104    
105                static const FloatTable VolumeCurve;    ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.
106                static const FloatTable PanCurve;       ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).
107                static const FloatTable CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.
108    
109          //protected:          //protected:
110              static InstrumentResourceManager instruments;              static InstrumentResourceManager instruments;
# Line 88  namespace LinuxSampler { namespace gig { Line 113  namespace LinuxSampler { namespace gig {
113              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)
114              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer
115              DiskThread*             pDiskThread;              DiskThread*             pDiskThread;
116              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).
117              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
118              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
119              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.
120              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).
121              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
122              RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.              RingBuffer<uint8_t,false>* pSysexBuffer;       ///< Input buffer for MIDI system exclusive messages.
             int                     ActiveVoiceCount;      ///< number of currently active voices (this value will be returned for public calls)  
123              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)
124              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
125              int                     VoiceSpawnsLeft;       ///< We only allow CONFIG_MAX_VOICES voices to be spawned 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.
# Line 107  namespace LinuxSampler { namespace gig { Line 131  namespace LinuxSampler { namespace gig {
131              bool                    SuspensionRequested;              bool                    SuspensionRequested;
132              ConditionServer         EngineDisabled;              ConditionServer         EngineDisabled;
133              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
134              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.
135              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.
136                Mutex                   ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
137                Pool< ::gig::DimensionRegion*>* pDimRegionPool[2]; ///< Double buffered pool, used by the engine channels to keep track of dimension regions in use.
138    
139              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);
140              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);
141              void RenderStolenVoices(uint Samples);              void RenderStolenVoices(uint Samples);
142                void RouteAudio(EngineChannel* pEngineChannel, uint Samples);
143              void PostProcess(EngineChannel* pEngineChannel);              void PostProcess(EngineChannel* pEngineChannel);
144              void ClearEventLists();              void ClearEventLists();
145              void ImportEvents(uint Samples);              void ImportEvents(uint Samples);
# Line 121  namespace LinuxSampler { namespace gig { Line 148  namespace LinuxSampler { namespace gig {
148              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
149              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
150              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
151                void ProcessSuspensionsChanges();
152                void ProcessPendingStreamDeletions();
153              Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts);              Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts);
154              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
155              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
156              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
157              void ResetInternal();              void ResetInternal();
158              void ResetScaleTuning();              void ResetScaleTuning();
159                void ResetSuspendedRegions();
160    
161              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
162              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
# Line 135  namespace LinuxSampler { namespace gig { Line 165  namespace LinuxSampler { namespace gig {
165    
166              friend class Voice;              friend class Voice;
167          private:          private:
168                Pool< ::gig::Region*> SuspendedRegions;
169                Mutex                 SuspendedRegionsMutex;
170                Condition             SuspensionChangeOngoing;
171                ::gig::Region*        pPendingRegionSuspension;
172                ::gig::Region*        pPendingRegionResumption;
173                int                   iPendingStreamDeletions;
174    
175              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
176    
177              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
# Line 142  namespace LinuxSampler { namespace gig { Line 179  namespace LinuxSampler { namespace gig {
179              int SostenutoKeys[128];              int SostenutoKeys[128];
180              int SostenutoKeyCount;              int SostenutoKeyCount;
181    
182              uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);              uint8_t GSCheckSum(const RingBuffer<uint8_t,false>::NonVolatileReader AddrReader, uint DataSize);
183              void    AdjustScale(int8_t ScaleTunes[12]);              void    AdjustScale(int8_t ScaleTunes[12]);
184              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);
185              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);
186              bool    ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key);              bool    ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key);
187                bool    RegionSuspended(::gig::Region* pRegion);
188              static float* InitVolumeCurve();              static float* InitVolumeCurve();
189              static float* InitPanCurve();              static float* InitPanCurve();
190                static float* InitCrossfadeCurve();
191              static float* InitCurve(const float* segments, int size = 128);              static float* InitCurve(const float* segments, int size = 128);
192    
193              unsigned long FrameTime; ///< Time in frames of the start of the current audio fragment              unsigned long FrameTime; ///< Time in frames of the start of the current audio fragment
194    
195                atomic_t ActiveVoiceCount; ///< number of currently active voices
196                int iMaxDiskStreams;
197      };      };
198    
199  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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