/[svn]/linuxsampler/trunk/src/engines/common/InstrumentScriptVM.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/engines/common/InstrumentScriptVM.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 2600 by schoenebeck, Sat Jun 7 00:16:03 2014 UTC revision 2645 by schoenebeck, Wed Jun 18 00:14:57 2014 UTC
# Line 10  Line 10 
10  #include "InstrumentScriptVM.h"  #include "InstrumentScriptVM.h"
11  #include "../AbstractEngineChannel.h"  #include "../AbstractEngineChannel.h"
12  #include "../../common/global_private.h"  #include "../../common/global_private.h"
13    #include "AbstractInstrumentManager.h"
14    #include "MidiKeyboardManager.h"
15    
16  namespace LinuxSampler {  namespace LinuxSampler {
17    
18        ///////////////////////////////////////////////////////////////////////
19        // class 'EventGroup'
20    
21        void EventGroup::insert(int eventID) {
22            if (contains(eventID)) return;
23    
24            AbstractEngine* pEngine = m_script->pEngineChannel->pEngine;
25    
26            // before adding the new event ID, check if there are any dead events
27            // and remove them in that case, before otherwise we might run in danger
28            // to run out of free space on this group for event IDs if a lot of
29            // events die before being removed explicitly from the group by script
30            //
31            // NOTE: or should we do this "dead ones" check only once in a while?
32            int firstDead = -1;
33            for (int i = 0; i < size(); ++i) {
34                if (firstDead >= 0) {
35                    if (pEngine->EventByID(eventID)) {
36                        remove(firstDead, i - firstDead);
37                        firstDead = -1;
38                    }
39                } else {
40                    if (!pEngine->EventByID(eventID)) firstDead = i;
41                }
42            }
43    
44            append(eventID);
45        }
46    
47        void EventGroup::erase(int eventID) {
48            int index = find(eventID);
49            remove(index);
50        }
51    
52        ///////////////////////////////////////////////////////////////////////
53        // class 'InstrumentScript'
54    
55        InstrumentScript::InstrumentScript(AbstractEngineChannel* pEngineChannel) {
56            parserContext = NULL;
57            bHasValidScript = false;
58            handlerInit = NULL;
59            handlerNote = NULL;
60            handlerRelease = NULL;
61            handlerController = NULL;
62            pEvents = NULL;
63            for (int i = 0; i < 128; ++i)
64                pKeyEvents[i] = NULL;
65            this->pEngineChannel = pEngineChannel;
66            for (int i = 0; i < INSTR_SCRIPT_EVENT_GROUPS; ++i)
67                eventGroups[i].setScript(this);
68        }
69    
70        InstrumentScript::~InstrumentScript() {
71            resetAll();
72            if (pEvents) {
73                for (int i = 0; i < 128; ++i) delete pKeyEvents[i];
74                delete pEvents;
75            }
76        }
77    
78        /** @brief Load real-time instrument script.
79         *
80         * Loads the real-time instrument script given by @a text on the engine
81         * channel this InstrumentScript object belongs to (defined by
82         * pEngineChannel member variable). The sampler engine's resource manager is
83         * used to allocate and share equivalent scripts on multiple engine
84         * channels.
85         *
86         * @param text - source code of script
87         */
88        void InstrumentScript::load(const String& text) {
89            dmsg(1,("Loading real-time instrument script ... "));
90    
91            // hand back old script reference and VM execution contexts
92            // (if not done already)
93            unload();
94    
95            code = text;
96    
97            AbstractInstrumentManager* pManager =
98                dynamic_cast<AbstractInstrumentManager*>(pEngineChannel->pEngine->GetInstrumentManager());
99    
100            // get new script reference
101            parserContext = pManager->scripts.Borrow(text, pEngineChannel);
102            if (!parserContext->errors().empty()) {
103                std::vector<ParserIssue> errors = parserContext->errors();
104                std::cerr << "[ScriptVM] Could not load instrument script, there were "
105                        << errors.size() << " parser errors:\n";
106                for (int i = 0; i < errors.size(); ++i)
107                    errors[i].dump();
108                return; // stop here if there were any parser errors
109            }
110    
111            handlerInit = parserContext->eventHandlerByName("init");
112            handlerNote = parserContext->eventHandlerByName("note");
113            handlerRelease = parserContext->eventHandlerByName("release");
114            handlerController = parserContext->eventHandlerByName("controller");
115            bHasValidScript =
116                handlerInit || handlerNote || handlerRelease || handlerController;
117    
118            // amount of script handlers each script event has to execute
119            int handlerExecCount = 0;
120            if (handlerNote || handlerRelease || handlerController) // only one of these are executed after "init" handler
121                handlerExecCount++;
122    
123            // create script event pool (if it doesn't exist already)
124            if (!pEvents) {
125                pEvents = new Pool<ScriptEvent>(CONFIG_MAX_EVENTS_PER_FRAGMENT);
126                for (int i = 0; i < 128; ++i)
127                    pKeyEvents[i] = new RTList<ScriptEvent>(pEvents);
128            }
129    
130            // create new VM execution contexts for new script
131            while (!pEvents->poolIsEmpty()) {
132                RTList<ScriptEvent>::Iterator it = pEvents->allocAppend();
133                it->execCtx = pEngineChannel->pEngine->pScriptVM->createExecContext(
134                    parserContext
135                );
136                it->handlers = new VMEventHandler*[handlerExecCount+1];
137            }
138            pEvents->clear();
139    
140            dmsg(1,("Done\n"));
141        }
142    
143        /** @brief Unload real-time instrument script.
144         *
145         * Unloads the currently used real-time instrument script and frees all
146         * resources allocated for that script. The sampler engine's resource manager
147         * is used to share equivalent scripts among multiple sampler channels, and
148         * to deallocate the parsed script once not used on any engine channel
149         * anymore.
150         *
151         * Calling this method will however not clear the @c code member variable.
152         * Thus, the script can be parsed again afterwards.
153         */
154        void InstrumentScript::unload() {
155            //dmsg(1,("InstrumentScript::unload(this=0x%llx)\n", this));
156    
157            if (parserContext)
158                dmsg(1,("Unloading current instrument script.\n"));
159    
160            // free allocated VM execution contexts
161            if (pEvents) {
162                pEvents->clear();
163                while (!pEvents->poolIsEmpty()) {
164                    RTList<ScriptEvent>::Iterator it = pEvents->allocAppend();
165                    if (it->execCtx) {
166                        // free VM execution context object
167                        delete it->execCtx;
168                        it->execCtx = NULL;
169                        // free C array of handler pointers
170                        delete [] it->handlers;
171                    }
172                }
173                pEvents->clear();
174            }
175            // hand back VM representation of script
176            if (parserContext) {
177                AbstractInstrumentManager* pManager =
178                    dynamic_cast<AbstractInstrumentManager*>(pEngineChannel->pEngine->GetInstrumentManager());
179    
180                pManager->scripts.HandBack(parserContext, pEngineChannel);
181                parserContext = NULL;
182                handlerInit = NULL;
183                handlerNote = NULL;
184                handlerRelease = NULL;
185                handlerController = NULL;
186            }
187            bHasValidScript = false;
188        }
189    
190        /**
191         * Same as unload(), but this one also empties the @c code member variable
192         * to an empty string.
193         */
194        void InstrumentScript::resetAll() {
195            unload();
196            code.clear();
197        }
198    
199        ///////////////////////////////////////////////////////////////////////
200        // class 'InstrumentScriptVM'
201    
202      InstrumentScriptVM::InstrumentScriptVM() :      InstrumentScriptVM::InstrumentScriptVM() :
203          m_event(NULL), m_fnPlayNote(this), m_fnSetController(this),          m_event(NULL), m_fnPlayNote(this), m_fnSetController(this),
204          m_fnIgnoreEvent(this), m_fnIgnoreController(this)          m_fnIgnoreEvent(this), m_fnIgnoreController(this), m_fnNoteOff(this),
205            m_fnSetEventMark(this), m_fnDeleteEventMark(this), m_fnByMarks(this)
206      {      {
207          m_CC.size = _MEMBER_SIZEOF(AbstractEngineChannel, ControllerTable);          m_CC.size = _MEMBER_SIZEOF(AbstractEngineChannel, ControllerTable);
208          m_CC_NUM = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.CC.Controller);          m_CC_NUM = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.CC.Controller);
209          m_EVENT_ID = DECLARE_VMINT(m_event, class ScriptEvent, id);          m_EVENT_ID = DECLARE_VMINT(m_event, class ScriptEvent, id);
210          m_EVENT_NOTE = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.Note.Key);          m_EVENT_NOTE = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.Note.Key);
211          m_EVENT_VELOCITY = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.Note.Velocity);          m_EVENT_VELOCITY = DECLARE_VMINT(m_event, class ScriptEvent, cause.Param.Note.Velocity);
212            m_KEY_DOWN.size = 128;
213      }      }
214    
215      VMExecStatus_t InstrumentScriptVM::exec(VMParserContext* parserCtx, ScriptEvent* event) {      VMExecStatus_t InstrumentScriptVM::exec(VMParserContext* parserCtx, ScriptEvent* event) {
# Line 31  namespace LinuxSampler { Line 219  namespace LinuxSampler {
219          // prepare built-in script variables for script execution          // prepare built-in script variables for script execution
220          m_event = event;          m_event = event;
221          m_CC.data = (int8_t*) &pEngineChannel->ControllerTable[0];          m_CC.data = (int8_t*) &pEngineChannel->ControllerTable[0];
222            m_KEY_DOWN.data = &pEngineChannel->GetMidiKeyboardManager()->KeyDown[0];
223    
224          // if script is in start condition, then do mandatory MIDI event          // if script is in start condition, then do mandatory MIDI event
225          // preprocessing tasks, which essentially means updating i.e. controller          // preprocessing tasks, which essentially means updating i.e. controller
# Line 86  namespace LinuxSampler { Line 275  namespace LinuxSampler {
275    
276          // now add own built-in variables          // now add own built-in variables
277          m["%CC"] = &m_CC;          m["%CC"] = &m_CC;
278          //m["%KEY_DOWN"] = &m_KEY_DOWN;          m["%KEY_DOWN"] = &m_KEY_DOWN;
279          //m["%POLY_AT"] = &m_POLY_AT;          //m["%POLY_AT"] = &m_POLY_AT;
280    
281          return m;          return m;
# Line 98  namespace LinuxSampler { Line 287  namespace LinuxSampler {
287    
288          m["$VCC_MONO_AT"] = CTRL_TABLE_IDX_AFTERTOUCH;          m["$VCC_MONO_AT"] = CTRL_TABLE_IDX_AFTERTOUCH;
289          m["$VCC_PITCH_BEND"] = CTRL_TABLE_IDX_PITCHBEND;          m["$VCC_PITCH_BEND"] = CTRL_TABLE_IDX_PITCHBEND;
290            for (int i = 0; i < INSTR_SCRIPT_EVENT_GROUPS; ++i) {
291                m["$MARK_" + ToString(i+1)] = i;
292            }
293    
294          return m;          return m;
295      }      }
# Line 108  namespace LinuxSampler { Line 300  namespace LinuxSampler {
300          else if (name == "set_controller") return &m_fnSetController;          else if (name == "set_controller") return &m_fnSetController;
301          else if (name == "ignore_event") return &m_fnIgnoreEvent;          else if (name == "ignore_event") return &m_fnIgnoreEvent;
302          else if (name == "ignore_controller") return &m_fnIgnoreController;          else if (name == "ignore_controller") return &m_fnIgnoreController;
303            else if (name == "note_off") return &m_fnNoteOff;
304            else if (name == "set_event_mark") return &m_fnSetEventMark;
305            else if (name == "delete_event_mark") return &m_fnDeleteEventMark;
306            else if (name == "by_marks") return &m_fnByMarks;
307    
308          // built-in script functions of derived VM class          // built-in script functions of derived VM class
309          return ScriptVM::functionByName(name);          return ScriptVM::functionByName(name);
Legend:
Removed from v.2600  
changed lines
  Added in v.2645
  ViewVC Help
Powered by ViewVC