/[svn]/linuxsampler/trunk/src/engines/gig/Engine.h
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revision 244 by schoenebeck, Fri Sep 17 01:01:11 2004 UTC revision 285 by schoenebeck, Thu Oct 14 21:31:26 2004 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 44  Line 44 
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  #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 57  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 100  namespace LinuxSampler { namespace gig { Line 108  namespace LinuxSampler { namespace gig {
108              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);              virtual void ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg);
109          protected:          protected:
110              struct midi_key_info_t {              struct midi_key_info_t {
111                  RTEList<Voice>* pActiveVoices;  ///< Contains the active voices associated with the MIDI key.                  RTList<Voice>*  pActiveVoices;  ///< Contains the active voices associated with the MIDI key.
112                  bool            KeyPressed;     ///< Is true if the respective MIDI key is currently pressed.                  bool            KeyPressed;     ///< Is true if the respective MIDI key is currently pressed.
113                  bool            Active;         ///< If the key contains active voices.                  bool            Active;         ///< If the key contains active voices.
114                  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
115                  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
116                  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)
117              };              };
118    
119              static InstrumentResourceManager Instruments;              static InstrumentResourceManager Instruments;
# Line 122  namespace LinuxSampler { namespace gig { Line 130  namespace LinuxSampler { namespace gig {
130              RingBuffer<Event>*      pEventQueue;           ///< Input event queue.              RingBuffer<Event>*      pEventQueue;           ///< Input event queue.
131              RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.              RingBuffer<uint8_t>*    pSysexBuffer;          ///< Input buffer for MIDI system exclusive messages.
132              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
133              RTELMemoryPool<Voice>*  pVoicePool;            ///< Contains all voices that can be activated.              Pool<Voice>*            pVoicePool;            ///< Contains all voices that can be activated.
134              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.
135              RTELMemoryPool<Event>*  pEventPool;            ///< Contains all Event objects that can be used.              Pool<Event>*            pEventPool;            ///< Contains all Event objects that can be used.
136              EventGenerator*         pEventGenerator;              EventGenerator*         pEventGenerator;
137              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.
138              RTEList<Event>*         pCCEvents;             ///< All control change events for the current audio fragment.              RTList<Event>*          pEvents;               ///< All events for the current audio fragment.
139              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.
140                RTList<Event>*          pSynthesisEvents[Event::destination_count];     ///< Events directly affecting synthesis parameter (like pitch, volume and filter).
141              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.
142              biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.              biquad_param_t*         pBasicFilterParameters; ///< Biquad parameters of the basic bandpass filter.
143              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 147  namespace LinuxSampler { namespace gig { Line 156  namespace LinuxSampler { namespace gig {
156              int                     InstrumentIdx;              int                     InstrumentIdx;
157              int                     InstrumentStat;              int                     InstrumentStat;
158              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
159                RTList<Voice>::Iterator itLastStolenVoice;      ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
160              void ProcessNoteOn(Event* pNoteOnEvent);              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.
161              void ProcessNoteOff(Event* pNoteOffEvent);              int                     MaxFadeOutPos;         ///< The last position in an audio fragment to allow a instant fade out (e.g. for voice stealing) without leading to clicks.
162              void ProcessPitchbend(Event* pPitchbendEvent);  
163              void ProcessControlChange(Event* pControlChangeEvent);              void ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent);
164              void ProcessSysex(Event* pSysexEvent);              void ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent);
165              void LaunchVoice(Event* pNoteOnEvent, int iLayer = 0, bool ReleaseTriggerVoice = false);              void ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent);
166              void KillVoiceImmediately(Voice* pVoice);              void ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent);
167                void ProcessSysex(Pool<Event>::Iterator& itSysexEvent);
168                Pool<Voice>::Iterator LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer = 0, bool ReleaseTriggerVoice = false, bool VoiceStealing = true);
169                void StealVoice(Pool<Event>::Iterator& itNoteOnEvent);
170                void FreeVoice(Pool<Voice>::Iterator& itVoice);
171              void ResetSynthesisParameters(Event::destination_t dst, float val);              void ResetSynthesisParameters(Event::destination_t dst, float val);
172              void ResetInternal();              void ResetInternal();
173    
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