/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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revision 56 by schoenebeck, Tue Apr 27 09:21:58 2004 UTC revision 438 by persson, Wed Mar 9 22:12:15 2005 UTC
# Line 3  Line 3 
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                              *
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 29  Line 30 
30  # warning Engine.h included  # warning Engine.h included
31  #endif // DEBUG_HEADERS  #endif // DEBUG_HEADERS
32    
33    #include <map>
34    
35    #include "EngineGlobals.h"
36  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
37  #include "../../common/RTELMemoryPool.h"  #include "../../common/Pool.h"
38  #include "../../common/ConditionServer.h"  #include "../../common/ConditionServer.h"
39  #include "../common/Engine.h"  #include "../common/Engine.h"
40  #include "../common/Event.h"  #include "../common/Event.h"
41    #include "../common/BiquadFilter.h"
42  #include "../../lib/fileloader/libgig/gig.h"  #include "../../lib/fileloader/libgig/gig.h"
 #include "InstrumentResourceManager.h"  
43  #include "../../network/lscp.h"  #include "../../network/lscp.h"
44    #include "EngineChannel.h"
 #define PITCHBEND_SEMITONES             12  
 #define MAX_AUDIO_VOICES                64  
45    
46  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
47    
# Line 47  namespace LinuxSampler { namespace gig { Line 49  namespace LinuxSampler { namespace gig {
49      class Voice;      class Voice;
50      class DiskThread;      class DiskThread;
51      class InstrumentResourceManager;      class InstrumentResourceManager;
52        class midi_key_info_t;
53        class EngineChannel;
54    
55      /**      /**
56       * Sampler engine for the Gigasampler format.       * Sampler engine for the Gigasampler format.
57       */       */
58      class gig::Engine : public LinuxSampler::Engine, public InstrumentConsumer {      class Engine : public LinuxSampler::Engine {
59          public:          public:
60              // methods              // methods
61              Engine();              Engine();
62             ~Engine();             ~Engine();
63                void Connect(AudioOutputDevice* pAudioOut);
64    
65              // abstract methods derived from class 'LinuxSampler::Engine'              // implementation of abstract methods derived from class 'LinuxSampler::Engine'
66              virtual void   LoadInstrument(const char* FileName, uint Instrument);              virtual int    RenderAudio(uint Samples);
67                virtual void   SendSysex(void* pData, uint Size);
68              virtual void   Reset();              virtual void   Reset();
69              virtual void   Enable();              virtual void   Enable();
70              virtual void   Disable();              virtual void   Disable();
             virtual void   SendNoteOn(uint8_t Key, uint8_t Velocity);  
             virtual void   SendNoteOff(uint8_t Key, uint8_t Velocity);  
             virtual void   SendPitchbend(int Pitch);  
             virtual void   SendControlChange(uint8_t Controller, uint8_t Value);  
             virtual float  Volume();  
             virtual void   Volume(float f);  
             virtual void   Connect(AudioOutputDevice* pAudioOut);  
             virtual void   DisconnectAudioOutputDevice();  
             virtual int    RenderAudio(uint Samples);  
71              virtual uint   VoiceCount();              virtual uint   VoiceCount();
72              virtual uint   VoiceCountMax();              virtual uint   VoiceCountMax();
73              virtual bool   DiskStreamSupported();              virtual bool   DiskStreamSupported();
# Line 80  namespace LinuxSampler { namespace gig { Line 77  namespace LinuxSampler { namespace gig {
77              virtual String DiskStreamBufferFillPercentage();              virtual String DiskStreamBufferFillPercentage();
78              virtual String Description();              virtual String Description();
79              virtual String Version();              virtual String Version();
80                virtual String EngineName();
81    
82              // abstract methods derived from interface class 'InstrumentConsumer'          //protected:
83              virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);              static InstrumentResourceManager instruments;
             virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);  
         protected:  
             struct midi_key_info_t {  
                 RTEList<Voice>* pActiveVoices; ///< Contains the active voices associated with the MIDI key.  
                 bool            KeyPressed;    ///< Is true if the respective MIDI key is currently pressed.  
                 bool            Active;        ///< If the key contains active voices.  
                 uint*           pSelf;         ///< hack to allow fast deallocation of the key from the list of active keys  
                 RTEList<Event>* pEvents;       ///< Key specific events (only Note-on, Note-off and sustain pedal currently)  
             };  
   
             static InstrumentResourceManager Instruments;  
84    
85              AudioOutputDevice*      pAudioOutputDevice;              AudioOutputDevice*      pAudioOutputDevice;
86                uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)
87                uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer
88              DiskThread*             pDiskThread;              DiskThread*             pDiskThread;
89              uint8_t                 ControllerTable[128];  ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.              RingBuffer<Event>*      pEventQueue;           ///< Input event queue for engine global events (e.g. SysEx messages).
90              RingBuffer<Event>*      pEventQueue;           ///< Input event queue.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
             midi_key_info_t         pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key  
             RTELMemoryPool<Voice>*  pVoicePool;            ///< Contains all voices that can be activated.  
             RTELMemoryPool<uint>*   pActiveKeys;           ///< Holds all keys in it's allocation list with active voices.  
             RTELMemoryPool<Event>*  pEventPool;            ///< Contains all Event objects that can be used.  
91              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
92              RTEList<Event>*         pEvents;               ///< All events for the current audio fragment.              RTList<Event>*          pVoiceStealingQueue;   ///< All voice-launching events which had to be postponed due to free voice shortage.
93              RTEList<Event>*         pCCEvents;             ///< All control change events for the current audio fragment.              RTList<Event>*          pEvents;               ///< All events for the current audio fragment.
94              RTEList<Event>*         pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
95                RTList<Event>*          pCCEvents;             ///< All control change events for the current audio fragment.
96                RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.
97                RTList<Event>*          pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
98              float*                  pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.              float*                  pSynthesisParameters[Event::destination_count]; ///< Matrix with final synthesis parameters for the current audio fragment which will be used in the main synthesis loop.
99              RIFF::File*             pRIFF;              biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
100              ::gig::File*            pGig;              biquad_param_t*         pMainFilterParameters;  ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
101              ::gig::Instrument*      pInstrument;              int                     ActiveVoiceCount;      ///< number of currently active voices (this value will be returned for public calls)
102              bool                    SustainPedal;          ///< true if sustain pedal is down              int                     ActiveVoiceCountTemp;  ///< number of currently active voices (for internal usage, will be used for incrementation)
             double                  GlobalVolume;          ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)  
             int                     Pitch;                 ///< Current (absolute) MIDI pitch value.  
             int                     ActiveVoiceCount;      ///< number of currently active voices  
103              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
104              bool                    SuspensionRequested;              bool                    SuspensionRequested;
105              ConditionServer         EngineDisabled;              ConditionServer         EngineDisabled;
106                int8_t                  ScaleTuning[12];       ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave
107              void ProcessNoteOn(Event* pNoteOnEvent);              int                     MaxFadeOutPos;         ///< The last position in an audio fragment to allow an instant fade out (e.g. for voice stealing) without leading to clicks.
108              void ProcessNoteOff(Event* pNoteOffEvent);              uint32_t                RandomSeed;            ///< State of the random number generator used by the random dimension.
109              void ProcessPitchbend(Event* pPitchbendEvent);  
110              void ProcessControlChange(Event* pControlChangeEvent);              void RenderAudio(EngineChannel* pEngineChannel, uint Samples);
111              void KillVoice(Voice* pVoice);              void ClearEventLists();
112                void ImportEvents(RingBuffer<Event>* pEventQueue, uint Samples);
113                void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
114                void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent);
115                void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
116                void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
117                void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
118                Pool<Voice>::Iterator LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);
119                void StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
120                void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
121                void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
122              void ResetSynthesisParameters(Event::destination_t dst, float val);              void ResetSynthesisParameters(Event::destination_t dst, float val);
123              void ResetInternal();              void ResetInternal();
124    
125                static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
126                static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
127    
128                void DisableAndLock(); // FIXME: should at least be protected
129    
130              friend class Voice;              friend class Voice;
131              friend class EGADSR;              friend class EGADSR;
132              friend class EGDecay;              friend class EGDecay;
133              friend class VCAManipulator;              friend class VCAManipulator;
134              friend class VCFCManipulator;              friend class VCFCManipulator;
135              friend class VCOManipulator;              friend class VCOManipulator;
             friend class InstrumentResourceManager;  
136          private:          private:
137              //static void AllocateSynthesisParametersMatrix();              std::list<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
138    
139                static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
140    
141              void DisableAndLock();              uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);
142                void    AdjustScale(int8_t ScaleTunes[12]);
143      };      };
144    
145  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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