/[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 947 by schoenebeck, Mon Nov 27 21:34:55 2006 UTC revision 1644 by persson, Sat Jan 19 16:55:03 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, 2006 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);
63                ::gig::DimensionRegion** ChangeInstrument(EngineChannel* pEngineChannel, ::gig::Instrument* pInstrument);
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);
# Line 79  namespace LinuxSampler { namespace gig { Line 84  namespace LinuxSampler { namespace gig {
84              virtual String EngineName();              virtual String EngineName();
85              virtual InstrumentManager* GetInstrumentManager();              virtual InstrumentManager* GetInstrumentManager();
86    
87              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
88              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
89              static const float* CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.              class FloatTable {
90                private:
91                    const float* array;
92                public:
93                    FloatTable(const float* array) : array(array) { }
94                    ~FloatTable() { delete[] array; }
95                    const float& operator[](int i) const { return array[i]; }
96                };
97    
98                static const FloatTable VolumeCurve;    ///< Table that maps volume control change values 0..127 to amplitude. Unity gain is at 90.
99                static const FloatTable PanCurve;       ///< Table that maps pan control change values 0..128 to right channel amplitude. Unity gain is at 64 (center).
100                static const FloatTable CrossfadeCurve; ///< Table that maps crossfade control change values 0..127 to amplitude. Unity gain is at 127.
101    
102          //protected:          //protected:
103              static InstrumentResourceManager instruments;              static InstrumentResourceManager instruments;
# Line 90  namespace LinuxSampler { namespace gig { Line 106  namespace LinuxSampler { namespace gig {
106              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)              uint                    SampleRate;            ///< Sample rate of the engines output audio signal (in Hz)
107              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer              uint                    MaxSamplesPerCycle;    ///< Size of each audio output buffer
108              DiskThread*             pDiskThread;              DiskThread*             pDiskThread;
109              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).
110              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
111              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
112              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.
113              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).
114              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
115              RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.              RingBuffer<uint8_t,false>* pSysexBuffer;       ///< Input buffer for MIDI system exclusive messages.
116              int                     ActiveVoiceCount;      ///< number of currently active voices (this value will be returned for public calls)              int                     ActiveVoiceCount;      ///< number of currently active voices (this value will be returned for public calls)
117              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)
118              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
# Line 116  namespace LinuxSampler { namespace gig { Line 132  namespace LinuxSampler { namespace gig {
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);
134              void RenderStolenVoices(uint Samples);              void RenderStolenVoices(uint Samples);
135                void RouteAudio(EngineChannel* pEngineChannel, uint Samples);
136              void PostProcess(EngineChannel* pEngineChannel);              void PostProcess(EngineChannel* pEngineChannel);
137              void ClearEventLists();              void ClearEventLists();
138              void ImportEvents(uint Samples);              void ImportEvents(uint Samples);
# Line 124  namespace LinuxSampler { namespace gig { Line 141  namespace LinuxSampler { namespace gig {
141              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);              void ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent);
142              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);              void ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent);
143              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);              void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
144                void ProcessSuspensionsChanges();
145                void ProcessPendingStreamDeletions();
146              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);
147              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent);
148              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);              void FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice);
149              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);              void FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey);
150              void ResetInternal();              void ResetInternal();
151              void ResetScaleTuning();              void ResetScaleTuning();
152                void ResetSuspendedRegions();
153    
154              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static Engine* AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
155              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);              static void    FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice);
# Line 138  namespace LinuxSampler { namespace gig { Line 158  namespace LinuxSampler { namespace gig {
158    
159              friend class Voice;              friend class Voice;
160          private:          private:
161    
162                /// Command used by the instrument loader thread to
163                /// request an instrument change on a channel.
164                struct instrument_change_command_t {
165                    EngineChannel* pEngineChannel;
166                    ::gig::Instrument* pInstrument;
167                };
168                struct instrument_change_reply_t {
169                    int dummy;
170                };
171                RingBuffer<instrument_change_command_t,false>* InstrumentChangeQueue;      ///< Contains the instrument change command
172                RingBuffer<instrument_change_reply_t,false>*   InstrumentChangeReplyQueue; ///< Contains the acknowledge of an instrument change
173               ::gig::DimensionRegion** pDimRegionsInUse; ///< After an instrument change, this contains a list of dimension regions that are still in use by playing voices
174    
175                Pool< ::gig::Region*> SuspendedRegions;
176                Mutex                 SuspendedRegionsMutex;
177                Condition             SuspensionChangeOngoing;
178                ::gig::Region*        pPendingRegionSuspension;
179                ::gig::Region*        pPendingRegionResumption;
180                int                   iPendingStreamDeletions;
181    
182              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.              ArrayList<EngineChannel*> engineChannels; ///< All engine channels of a gig::Engine instance.
183    
184              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.              static std::map<AudioOutputDevice*,Engine*> engines; ///< All instances of gig::Engine.
# Line 145  namespace LinuxSampler { namespace gig { Line 186  namespace LinuxSampler { namespace gig {
186              int SostenutoKeys[128];              int SostenutoKeys[128];
187              int SostenutoKeyCount;              int SostenutoKeyCount;
188    
189              uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);              uint8_t GSCheckSum(const RingBuffer<uint8_t,false>::NonVolatileReader AddrReader, uint DataSize);
190              void    AdjustScale(int8_t ScaleTunes[12]);              void    AdjustScale(int8_t ScaleTunes[12]);
191              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);              void    ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent);
192              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);              void    KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent);
193              bool    ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key);              bool    ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key);
194                bool    RegionSuspended(::gig::Region* pRegion);
195              static float* InitVolumeCurve();              static float* InitVolumeCurve();
196              static float* InitPanCurve();              static float* InitPanCurve();
197              static float* InitCrossfadeCurve();              static float* InitCrossfadeCurve();
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