/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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revision 242 by schoenebeck, Wed Sep 15 13:59:08 2004 UTC revision 376 by senkov, Sat Feb 12 23:48:50 2005 UTC
# Line 32  Line 32 
32  #include <map>  #include <map>
33    
34  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
35  #include "../../common/RTELMemoryPool.h"  #include "../../common/Pool.h"
36  #include "../../common/ConditionServer.h"  #include "../../common/ConditionServer.h"
37  #include "../common/Engine.h"  #include "../common/Engine.h"
38  #include "../common/Event.h"  #include "../common/Event.h"
# Line 43  Line 43 
43    
44  #define PITCHBEND_SEMITONES             12  #define PITCHBEND_SEMITONES             12
45  #define MAX_AUDIO_VOICES                128  #define MAX_AUDIO_VOICES                128
46    #define SYSEX_BUFFER_SIZE               2048  // 2kB
47    #define VOICE_STEAL_ALGORITHM           voice_steal_algo_oldestkey  ///< @see voice_steal_algo_t for available voice stealing algorithms
48    
49  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
50    
# Line 56  namespace LinuxSampler { namespace gig { Line 58  namespace LinuxSampler { namespace gig {
58      /**      /**
59       * Sampler engine for the Gigasampler format.       * Sampler engine for the Gigasampler format.
60       */       */
61      class gig::Engine : public LinuxSampler::Engine, public InstrumentConsumer {      class Engine : public LinuxSampler::Engine, public InstrumentConsumer {
62          public:          public:
63                // types
64                enum voice_steal_algo_t {
65                    voice_steal_algo_none,
66                    voice_steal_algo_keymask,
67                    voice_steal_algo_oldestkey
68                };
69    
70              // methods              // methods
71              Engine();              Engine();
72             ~Engine();             ~Engine();
# Line 71  namespace LinuxSampler { namespace gig { Line 80  namespace LinuxSampler { namespace gig {
80              virtual void   SendNoteOff(uint8_t Key, uint8_t Velocity);              virtual void   SendNoteOff(uint8_t Key, uint8_t Velocity);
81              virtual void   SendPitchbend(int Pitch);              virtual void   SendPitchbend(int Pitch);
82              virtual void   SendControlChange(uint8_t Controller, uint8_t Value);              virtual void   SendControlChange(uint8_t Controller, uint8_t Value);
83                virtual void   SendSysex(void* pData, uint Size);
84              virtual float  Volume();              virtual float  Volume();
85              virtual void   Volume(float f);              virtual void   Volume(float f);
86              virtual uint   Channels();              virtual uint   Channels();
# Line 90  namespace LinuxSampler { namespace gig { Line 100  namespace LinuxSampler { namespace gig {
100              virtual String Version();              virtual String Version();
101              virtual String EngineName();              virtual String EngineName();
102              virtual String InstrumentFileName();              virtual String InstrumentFileName();
103                virtual String InstrumentName();
104              virtual int    InstrumentIndex();              virtual int    InstrumentIndex();
105              virtual int    InstrumentStatus();              virtual int    InstrumentStatus();
106    
107              // abstract methods derived from interface class 'InstrumentConsumer'              // abstract methods derived from interface class 'InstrumentConsumer'
108              virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);              virtual void ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg);
109              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
110          protected:          //protected:
111              struct midi_key_info_t {              struct midi_key_info_t {
112                  RTEList<Voice>* pActiveVoices;  ///< Contains the active voices associated with the MIDI key.                  RTList<Voice>*  pActiveVoices;  ///< Contains the active voices associated with the MIDI key.
113                  bool            KeyPressed;     ///< Is true if the respective MIDI key is currently pressed.                  bool            KeyPressed;     ///< Is true if the respective MIDI key is currently pressed.
114                  bool            Active;         ///< If the key contains active voices.                  bool            Active;         ///< If the key contains active voices.
115                  bool            ReleaseTrigger; ///< If we have to launch release triggered voice(s) when the key is released                  bool            ReleaseTrigger; ///< If we have to launch release triggered voice(s) when the key is released
116                  uint*           pSelf;          ///< hack to allow fast deallocation of the key from the list of active keys                  Pool<uint>::Iterator itSelf;         ///< hack to allow fast deallocation of the key from the list of active keys
117                  RTEList<Event>* pEvents;        ///< Key specific events (only Note-on, Note-off and sustain pedal currently)                  RTList<Event>*  pEvents;        ///< Key specific events (only Note-on, Note-off and sustain pedal currently)
118              };              };
119    
120              static InstrumentResourceManager Instruments;              static InstrumentResourceManager Instruments;
# Line 118  namespace LinuxSampler { namespace gig { Line 129  namespace LinuxSampler { namespace gig {
129              DiskThread*             pDiskThread;              DiskThread*             pDiskThread;
130              uint8_t                 ControllerTable[128];  ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.              uint8_t                 ControllerTable[128];  ///< Reflects the current values (0-127) of all MIDI controllers for this engine / sampler channel.
131              RingBuffer<Event>*      pEventQueue;           ///< Input event queue.              RingBuffer<Event>*      pEventQueue;           ///< Input event queue.
132                RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.
133              midi_key_info_t         pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key              midi_key_info_t         pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
134              RTELMemoryPool<Voice>*  pVoicePool;            ///< Contains all voices that can be activated.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
135              RTELMemoryPool<uint>*   pActiveKeys;           ///< Holds all keys in it's allocation list with active voices.              Pool<uint>*             pActiveKeys;           ///< Holds all keys in it's allocation list with active voices.
136              RTELMemoryPool<Event>*  pEventPool;            ///< Contains all Event objects that can be used.              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
137              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
138              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.
139              RTEList<Event>*         pCCEvents;             ///< All control change events for the current audio fragment.              RTList<Event>*          pEvents;               ///< All events for the current audio fragment.
140              RTEList<Event>*         pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).              RTList<Event>*          pCCEvents;             ///< All control change events for the current audio fragment.
141                RTList<Event>*          pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
142              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.
143              biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.              biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
144              biquad_param_t*         pMainFilterParameters;  ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).              biquad_param_t*         pMainFilterParameters;  ///< Main biquad parameters of the individual filter (lowpass / bandpass / highpass).
# Line 136  namespace LinuxSampler { namespace gig { Line 149  namespace LinuxSampler { namespace gig {
149              bool                    SustainPedal;          ///< true if sustain pedal is down              bool                    SustainPedal;          ///< true if sustain pedal is down
150              double                  GlobalVolume;          ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)              double                  GlobalVolume;          ///< overall volume (a value < 1.0 means attenuation, a value > 1.0 means amplification)
151              int                     Pitch;                 ///< Current (absolute) MIDI pitch value.              int                     Pitch;                 ///< Current (absolute) MIDI pitch value.
152                int                     CurrentKeyDimension;   ///< Current value (0-127) for the keyboard dimension, altered by pressing a keyswitching key.
153              int                     ActiveVoiceCount;      ///< number of currently active voices              int                     ActiveVoiceCount;      ///< number of currently active voices
154              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start              int                     ActiveVoiceCountMax;   ///< the maximum voice usage since application start
155              bool                    SuspensionRequested;              bool                    SuspensionRequested;
156              ConditionServer         EngineDisabled;              ConditionServer         EngineDisabled;
157              String                  InstrumentFile;              String                  InstrumentFile;
158              int                     InstrumentIdx;              int                     InstrumentIdx;
159                String                  InstrumentIdxName;
160              int                     InstrumentStat;              int                     InstrumentStat;
161                int8_t                  ScaleTuning[12];       ///< contains optional detune factors (-64..+63 cents) for all 12 semitones of an octave
162              void ProcessNoteOn(Event* pNoteOnEvent);              RTList<Voice>::Iterator itLastStolenVoice;      ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
163              void ProcessNoteOff(Event* pNoteOffEvent);              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.
164              void ProcessPitchbend(Event* pPitchbendEvent);              int                     MaxFadeOutPos;         ///< The last position in an audio fragment to allow a instant fade out (e.g. for voice stealing) without leading to clicks.
165              void ProcessControlChange(Event* pControlChangeEvent);  
166              void LaunchVoice(Event* pNoteOnEvent, int iLayer = 0, bool ReleaseTriggerVoice = false);              void ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent);
167              void KillVoiceImmediately(Voice* pVoice);              void ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent);
168                void ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent);
169                void ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent);
170                void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
171                Pool<Voice>::Iterator LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing);
172                void StealVoice(Pool<Event>::Iterator& itNoteOnEvent);
173                void FreeVoice(Pool<Voice>::Iterator& itVoice);
174                void FreeKey(midi_key_info_t* pKey);
175              void ResetSynthesisParameters(Event::destination_t dst, float val);              void ResetSynthesisParameters(Event::destination_t dst, float val);
176              void ResetInternal();              void ResetInternal();
177    
# Line 161  namespace LinuxSampler { namespace gig { Line 183  namespace LinuxSampler { namespace gig {
183              friend class VCOManipulator;              friend class VCOManipulator;
184              friend class InstrumentResourceManager;              friend class InstrumentResourceManager;
185          private:          private:
186              void DisableAndLock();              void    DisableAndLock();
187                uint8_t GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize);
188                void    AdjustScale(int8_t ScaleTunes[12]);
189      };      };
190    
191  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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