/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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Diff of /linuxsampler/trunk/src/engines/gig/Engine.h

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revision 1321 by schoenebeck, Tue Sep 4 01:12:49 2007 UTC revision 1751 by schoenebeck, Mon Jul 28 07:36:35 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) 2005-2007 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 60  namespace LinuxSampler { namespace gig { Line 60  namespace LinuxSampler { namespace gig {
60              Engine();              Engine();
61              virtual ~Engine();              virtual ~Engine();
62              void Connect(AudioOutputDevice* pAudioOut);              void Connect(AudioOutputDevice* pAudioOut);
             ::gig::DimensionRegion** ChangeInstrument(EngineChannel* pEngineChannel, ::gig::Instrument* pInstrument);  
63              void SuspendAll();              void SuspendAll();
64              void ResumeAll();              void ResumeAll();
65              void Suspend(::gig::Region* pRegion);              void Suspend(::gig::Region* pRegion);
# Line 68  namespace LinuxSampler { namespace gig { Line 67  namespace LinuxSampler { namespace gig {
67    
68              // implementation of abstract methods derived from class 'LinuxSampler::Engine'              // implementation of abstract methods derived from class 'LinuxSampler::Engine'
69              virtual int    RenderAudio(uint Samples);              virtual int    RenderAudio(uint Samples);
70              virtual void   SendSysex(void* pData, uint Size);              virtual void   SendSysex(void* pData, uint Size, MidiInputPort* pSender);
71              virtual void   Reset();              virtual void   Reset();
72              virtual void   Enable();              virtual void   Enable();
73              virtual void   Disable();              virtual void   Disable();
# Line 84  namespace LinuxSampler { namespace gig { Line 83  namespace LinuxSampler { namespace gig {
83              virtual String EngineName();              virtual String EngineName();
84              virtual InstrumentManager* GetInstrumentManager();              virtual InstrumentManager* GetInstrumentManager();
85    
86              static const float* VolumeCurve;    ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.              // Simple array wrapper just to make sure memory is freed
87              static const float* PanCurve;       ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).              // when liblinuxsampler is unloaded
88              static const float* CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.              class FloatTable {
89                private:
90                    const float* array;
91                public:
92                    FloatTable(const float* array) : array(array) { }
93                    ~FloatTable() { delete[] array; }
94                    const float& operator[](int i) const { return array[i]; }
95                };
96    
97                static const FloatTable VolumeCurve;    ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.
98                static const FloatTable PanCurve;       ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).
99                static const FloatTable CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.
100    
101          //protected:          //protected:
102              static InstrumentResourceManager instruments;              static InstrumentResourceManager instruments;
# Line 114  namespace LinuxSampler { namespace gig { Line 124  namespace LinuxSampler { namespace gig {
124              bool                    SuspensionRequested;              bool                    SuspensionRequested;
125              ConditionServer         EngineDisabled;              ConditionServer         EngineDisabled;
126              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
127              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.
128              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.
129              Mutex                   ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).              Mutex                   ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
130                Pool< ::gig::DimensionRegion*>* pDimRegionPool[2]; ///< Double buffered pool, used by the engine channels to keep track of dimension regions in use.
131    
132              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);              void ProcessEvents(EngineChannel* pEngineChannel, uint Samples);
133              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);              void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples);
# Line 147  namespace LinuxSampler { namespace gig { Line 158  namespace LinuxSampler { namespace gig {
158    
159              friend class Voice;              friend class Voice;
160          private:          private:
   
             /// Command used by the instrument loader thread to  
             /// request an instrument change on a channel.  
             struct instrument_change_command_t {  
                 EngineChannel* pEngineChannel;  
                 ::gig::Instrument* pInstrument;  
             };  
             struct instrument_change_reply_t {  
                 int dummy;  
             };  
             RingBuffer<instrument_change_command_t,false>* InstrumentChangeQueue;      ///< Contains the instrument change command  
             RingBuffer<instrument_change_reply_t,false>*   InstrumentChangeReplyQueue; ///< Contains the acknowledge of an instrument change  
            ::gig::DimensionRegion** pDimRegionsInUse; ///< After an instrument change, this contains a list of dimension regions that are still in use by playing voices  
   
161              Pool< ::gig::Region*> SuspendedRegions;              Pool< ::gig::Region*> SuspendedRegions;
162              Mutex                 SuspendedRegionsMutex;              Mutex                 SuspendedRegionsMutex;
163              Condition             SuspensionChangeOngoing;              Condition             SuspensionChangeOngoing;
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