/[svn]/linuxsampler/trunk/src/engines/common/InstrumentScriptVM.h
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revision 2596 by schoenebeck, Thu Jun 5 19:39:12 2014 UTC revision 2630 by schoenebeck, Fri Jun 13 15:01:06 2014 UTC
# Line 11  Line 11 
11  #define LS_INSTRUMENT_SCRIPT_VM_H  #define LS_INSTRUMENT_SCRIPT_VM_H
12    
13  #include "../../common/global.h"  #include "../../common/global.h"
14    #include "../../common/ConstCapacityArray.h"
15  #include "../../scriptvm/ScriptVM.h"  #include "../../scriptvm/ScriptVM.h"
16  #include "Event.h"  #include "Event.h"
17    #include "../../common/Pool.h"
18  #include "InstrumentScriptVMFunctions.h"  #include "InstrumentScriptVMFunctions.h"
19    
20    #define INSTR_SCRIPT_EVENT_GROUPS 28
21    
22  namespace LinuxSampler {  namespace LinuxSampler {
23    
24        class AbstractEngineChannel;
25        class InstrumentScript;
26    
27        /** @brief List of Event IDs.
28         *
29         * Used for built-in script functions:
30         *     by_marks(), set_event_mark(), delete_event_mark()
31         */
32        class EventGroup : protected ConstCapacityArray<int> {
33        public:
34            EventGroup() : ConstCapacityArray<int>(CONFIG_MAX_EVENTS_PER_FRAGMENT), m_script(NULL) {}
35            void insert(int eventID);
36            void erase(int eventID);
37            void setScript(InstrumentScript* pScript) { m_script = pScript; }
38            inline int size() const { return ConstCapacityArray<int>::size(); }
39            inline int& operator[](uint index) { return ConstCapacityArray<int>::operator[](index); }
40            inline const int& operator[](uint index) const { return ConstCapacityArray<int>::operator[](index); }
41        protected:
42            InstrumentScript* m_script;
43            StmtFlags_t flags;
44        };
45    
46        /** @brief Real-time instrument script VM representation.
47         *
48         * Holds the VM representation of all event handlers of the currently loaded
49         * script, ready to be executed by the sampler engine.
50         */
51        struct InstrumentScript {
52            VMParserContext*      parserContext; ///< VM represenation of the currently loaded script or NULL if not script was loaded. Note that it is also not NULL if parser errors occurred!
53            bool                  bHasValidScript; ///< True in case there is a valid script currently loaded, false if script processing shall be skipped.
54            VMEventHandler*       handlerInit; ///< VM representation of script's initilization callback or NULL if current script did not define such an init handler.
55            VMEventHandler*       handlerNote; ///< VM representation of script's MIDI note on callback or NULL if current script did not define such an event handler.
56            VMEventHandler*       handlerRelease; ///< VM representation of script's MIDI note off callback or NULL if current script did not define such an event handler.
57            VMEventHandler*       handlerController; ///< VM representation of script's MIDI controller callback or NULL if current script did not define such an event handler.
58            Pool<ScriptEvent>*    pEvents; ///< Pool of all available script execution instances. ScriptEvents available to be allocated from the Pool are currently unused / not executiong, whereas the ScriptEvents allocated on the list are currently suspended / have not finished execution yet.
59            AbstractEngineChannel* pEngineChannel;
60            String                code; ///< Source code of the instrument script. Used in case the sampler engine is changed, in that case a new ScriptVM object is created for the engine and VMParserContext object for this script needs to be recreated as well. Thus the script is then parsed again by passing the source code to recreate the parser context.
61            EventGroup            eventGroups[INSTR_SCRIPT_EVENT_GROUPS]; ///< Used for built-in script functions: by_event_marks(), set_event_mark(), delete_event_mark().
62    
63            InstrumentScript(AbstractEngineChannel* pEngineChannel);
64    
65            ~InstrumentScript() {
66                resetAll();
67            }
68    
69            void load(const String& text);
70            void unload();
71            void resetAll();
72        };
73    
74      /** @brief Real-time instrument script virtual machine.      /** @brief Real-time instrument script virtual machine.
75       *       *
76       * Extends the core ScriptVM implementation with MIDI specific built-in       * Extends the core ScriptVM implementation with MIDI specific built-in
# Line 38  namespace LinuxSampler { Line 92  namespace LinuxSampler {
92      protected:      protected:
93          ScriptEvent* m_event; ///< The event currently executed by exec().          ScriptEvent* m_event; ///< The event currently executed by exec().
94    
         Event* m_cause;  
   
95          // buil-in script variables          // buil-in script variables
96          VMInt8Array m_CC;          VMInt8Array m_CC;
97          VMInt8RelPtr m_CC_NUM;          VMInt8RelPtr m_CC_NUM;
98            VMIntRelPtr  m_EVENT_ID;
99          VMInt8RelPtr m_EVENT_NOTE;          VMInt8RelPtr m_EVENT_NOTE;
100          VMInt8RelPtr m_EVENT_VELOCITY;          VMInt8RelPtr m_EVENT_VELOCITY;
101          //VMIntArray m_KEY_DOWN; //TODO: ...          VMInt8Array  m_KEY_DOWN;
102          //VMIntArray m_POLY_AT; //TODO: ...          //VMIntArray m_POLY_AT; //TODO: ...
103          //int m_POLY_AT_NUM; //TODO: ...          //int m_POLY_AT_NUM; //TODO: ...
104    
105          // buil-in script functions          // buil-in script functions
106          InstrumentScriptVMFunction_play_note m_fnPlayNote;          InstrumentScriptVMFunction_play_note m_fnPlayNote;
107            InstrumentScriptVMFunction_set_controller m_fnSetController;
108            InstrumentScriptVMFunction_ignore_event m_fnIgnoreEvent;
109            InstrumentScriptVMFunction_ignore_controller m_fnIgnoreController;
110            InstrumentScriptVMFunction_note_off m_fnNoteOff;
111            InstrumentScriptVMFunction_set_event_mark m_fnSetEventMark;
112            InstrumentScriptVMFunction_delete_event_mark m_fnDeleteEventMark;
113            InstrumentScriptVMFunction_by_marks m_fnByMarks;
114    
115          friend class InstrumentScriptVMFunction_play_note;          friend class InstrumentScriptVMFunction_play_note;
116            friend class InstrumentScriptVMFunction_set_controller;
117            friend class InstrumentScriptVMFunction_ignore_event;
118            friend class InstrumentScriptVMFunction_ignore_controller;
119            friend class InstrumentScriptVMFunction_note_off;
120            friend class InstrumentScriptVMFunction_set_event_mark;
121            friend class InstrumentScriptVMFunction_delete_event_mark;
122            friend class InstrumentScriptVMFunction_by_marks;
123      };      };
124    
125  } // namespace LinuxSampler  } // namespace LinuxSampler
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