/[svn]/linuxsampler/trunk/src/engines/common/InstrumentScriptVMFunctions.cpp
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revision 2600 by schoenebeck, Sat Jun 7 00:16:03 2014 UTC revision 2938 by schoenebeck, Mon Jul 11 17:10:40 2016 UTC
# Line 1  Line 1 
1  /*  /*
2   * Copyright (c) 2014 Christian Schoenebeck   * Copyright (c) 2014-2016 Christian Schoenebeck
3   *   *
4   * http://www.linuxsampler.org   * http://www.linuxsampler.org
5   *   *
# Line 12  Line 12 
12  #include "../AbstractEngineChannel.h"  #include "../AbstractEngineChannel.h"
13    
14  namespace LinuxSampler {  namespace LinuxSampler {
15        
16        // play_note() function
17    
18      InstrumentScriptVMFunction_play_note::InstrumentScriptVMFunction_play_note(InstrumentScriptVM* parent)      InstrumentScriptVMFunction_play_note::InstrumentScriptVMFunction_play_note(InstrumentScriptVM* parent)
19          : m_vm(parent)          : m_vm(parent)
# Line 22  namespace LinuxSampler { Line 24  namespace LinuxSampler {
24          int note = args->arg(0)->asInt()->evalInt();          int note = args->arg(0)->asInt()->evalInt();
25          int velocity = (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : 127;          int velocity = (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : 127;
26          int sampleoffset = (args->argsCount() >= 3) ? args->arg(2)->asInt()->evalInt() : 0;          int sampleoffset = (args->argsCount() >= 3) ? args->arg(2)->asInt()->evalInt() : 0;
27          int duration = (args->argsCount() >= 4) ? args->arg(3)->asInt()->evalInt() : 0; //TODO: once -1 is implemented, it might be a better default value instead of 0          int duration = (args->argsCount() >= 4) ? args->arg(3)->asInt()->evalInt() : 0; //TODO: -1 might be a better default value instead of 0
28    
29          if (note < 0 || note > 127) {          if (note < 0 || note > 127) {
30              errMsg("play_note(): argument 1 is an invalid note number");              errMsg("play_note(): argument 1 is an invalid note number");
31              return errorResult(-1);              return errorResult(0);
32          }          }
33    
34          if (velocity < 0 || velocity > 127) {          if (velocity < 0 || velocity > 127) {
35              errMsg("play_note(): argument 2 is an invalid velocity value");              errMsg("play_note(): argument 2 is an invalid velocity value");
36              return errorResult(-1);              return errorResult(0);
37          }          }
38    
39          if (sampleoffset < 0) {          if (sampleoffset < 0) {
40              errMsg("play_note(): argument 3 may not be a negative sample offset");              errMsg("play_note(): argument 3 may not be a negative sample offset");
41              return errorResult(-1);              return errorResult(0);
42          } else if (sampleoffset != 0) {          } else if (sampleoffset != 0) {
43              wrnMsg("play_note(): argument 3 does not support a sample offset other than 0 yet");              wrnMsg("play_note(): argument 3 does not support a sample offset other than 0 yet");
44          }          }
45    
46          if (duration < -1) {          if (duration < -1) {
47              errMsg("play_note(): argument 4 must be a duration value of at least -1 or higher");              errMsg("play_note(): argument 4 must be a duration value of at least -1 or higher");
48              return errorResult(-1);              return errorResult(0);
         } else if (duration == -1) {  
             wrnMsg("play_note(): argument 4 does not support special value -1 as duration yet");  
         } else if (duration != 0) {  
             wrnMsg("play_note(): argument 4 does not support any other value as 0 as duration yet");  
49          }          }
50    
51          AbstractEngineChannel* pEngineChannel =          AbstractEngineChannel* pEngineChannel =
52              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
53    
54          Event e = m_vm->m_event->cause;          Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
55          e.Type = Event::type_note_on;          e.Init(); // clear IDs
56            e.Type = Event::type_play_note;
57          e.Param.Note.Key = note;          e.Param.Note.Key = note;
58          e.Param.Note.Velocity = velocity;          e.Param.Note.Velocity = velocity;
59          e.Format = {}; // init format speific stuff with zero          // make this new note dependent to the life time of the original note
60            if (duration == -1) {
61                if (m_vm->currentVMEventHandler()->eventHandlerType() != VM_EVENT_HANDLER_NOTE) {
62                    errMsg("play_note(): -1 for argument 4 may only be used for note event handlers");
63                    return errorResult(0);
64                }
65                e.Param.Note.ParentNoteID = m_vm->m_event->cause.Param.Note.ID;
66            }
67    
68            const note_id_t id = pEngineChannel->ScheduleNoteMicroSec(&e, 0);
69    
70          int id = pEngineChannel->ScheduleEvent(&e, duration);          // if a duration is supplied (and play-note event was scheduled
71            // successfully above), then schedule a subsequent stop-note event
72            if (id && duration > 0) {
73                e.Type = Event::type_stop_note;
74                e.Param.Note.ID = id;
75                e.Param.Note.Velocity = 127;
76                pEngineChannel->ScheduleEventMicroSec(&e, duration);
77            }
78    
79          return successResult(id);          // even if id is null, don't return an errorResult() here, because that
80            // would abort the script, and under heavy load it may be considerable
81            // that ScheduleNoteMicroSec() fails above, so simply ignore that
82            return successResult( ScriptID::fromNoteID(id) );
83      }      }
84    
85        // set_controller() function
86    
87      InstrumentScriptVMFunction_set_controller::InstrumentScriptVMFunction_set_controller(InstrumentScriptVM* parent)      InstrumentScriptVMFunction_set_controller::InstrumentScriptVMFunction_set_controller(InstrumentScriptVM* parent)
88          : m_vm(parent)          : m_vm(parent)
89      {      {
# Line 76  namespace LinuxSampler { Line 96  namespace LinuxSampler {
96          AbstractEngineChannel* pEngineChannel =          AbstractEngineChannel* pEngineChannel =
97              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
98    
99          Event e = m_vm->m_event->cause;          Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
100          e.Format = {}; // init format speific stuff with zero          e.Init(); // clear IDs
101          if (controller == CTRL_TABLE_IDX_AFTERTOUCH) {          if (controller == CTRL_TABLE_IDX_AFTERTOUCH) {
102              e.Type = Event::type_channel_pressure;              e.Type = Event::type_channel_pressure;
103              e.Param.ChannelPressure.Value = value & 127;              e.Param.ChannelPressure.Value = value & 127;
# Line 93  namespace LinuxSampler { Line 113  namespace LinuxSampler {
113              return errorResult();              return errorResult();
114          }          }
115    
116          int id = pEngineChannel->ScheduleEvent(&e, 0);          const event_id_t id = pEngineChannel->ScheduleEventMicroSec(&e, 0);
117    
118            // even if id is null, don't return an errorResult() here, because that
119            // would abort the script, and under heavy load it may be considerable
120            // that ScheduleEventMicroSec() fails above, so simply ignore that
121            return successResult( ScriptID::fromEventID(id) );
122        }
123    
124          return successResult(id);      // ignore_event() function
     }      
125    
126      InstrumentScriptVMFunction_ignore_event::InstrumentScriptVMFunction_ignore_event(InstrumentScriptVM* parent)      InstrumentScriptVMFunction_ignore_event::InstrumentScriptVMFunction_ignore_event(InstrumentScriptVM* parent)
127          : m_vm(parent)          : m_vm(parent)
128      {      {
129      }      }
130    
131        bool InstrumentScriptVMFunction_ignore_event::acceptsArgType(int iArg, ExprType_t type) const {
132            return type == INT_EXPR || type == INT_ARR_EXPR;
133        }
134    
135      VMFnResult* InstrumentScriptVMFunction_ignore_event::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_ignore_event::exec(VMFnArgs* args) {
136          int id = args->arg(0)->asInt()->evalInt();          AbstractEngineChannel* pEngineChannel =
137          if (id < 0) {                  static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
138              wrnMsg("ignore_event(): argument may not be a negative event ID");  
139            if (args->arg(0)->exprType() == INT_EXPR) {
140                const ScriptID id = args->arg(0)->asInt()->evalInt();
141                if (!id) {
142                    wrnMsg("ignore_event(): event ID argument may not be zero");
143                    // not errorResult(), because that would abort the script, not intentional in this case
144                    return successResult();
145                }
146                pEngineChannel->IgnoreEventByScriptID(id);
147            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
148                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
149                for (int i = 0; i < ids->arraySize(); ++i) {
150                    const ScriptID id = ids->evalIntElement(i);    
151                    pEngineChannel->IgnoreEventByScriptID(id);
152                }
153            }
154    
155            return successResult();
156        }
157    
158        // ignore_controller() function
159    
160        InstrumentScriptVMFunction_ignore_controller::InstrumentScriptVMFunction_ignore_controller(InstrumentScriptVM* parent)
161            : m_vm(parent)
162        {
163        }
164    
165        VMFnResult* InstrumentScriptVMFunction_ignore_controller::exec(VMFnArgs* args) {
166            const ScriptID id = (args->argsCount() >= 1) ? args->arg(0)->asInt()->evalInt() : m_vm->m_event->id;
167            if (!id && args->argsCount() >= 1) {
168                wrnMsg("ignore_controller(): event ID argument may not be zero");
169              return successResult();              return successResult();
170          }          }
171    
172          AbstractEngineChannel* pEngineChannel =          AbstractEngineChannel* pEngineChannel =
173              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
174    
175          pEngineChannel->IgnoreEvent(id);          pEngineChannel->IgnoreEventByScriptID(id);
176    
177          return successResult();          return successResult();
178      }      }
179    
180      InstrumentScriptVMFunction_ignore_controller::InstrumentScriptVMFunction_ignore_controller(InstrumentScriptVM* parent)      // note_off() function
181    
182        InstrumentScriptVMFunction_note_off::InstrumentScriptVMFunction_note_off(InstrumentScriptVM* parent)
183          : m_vm(parent)          : m_vm(parent)
184      {      {
185      }      }
186    
187      VMFnResult* InstrumentScriptVMFunction_ignore_controller::exec(VMFnArgs* args) {      bool InstrumentScriptVMFunction_note_off::acceptsArgType(int iArg, ExprType_t type) const {
188          int id = (args->argsCount() >= 1) ? args->arg(0)->asInt()->evalInt() : m_vm->m_event->id;          return type == INT_EXPR || type == INT_ARR_EXPR;
189          if (id < 0) {      }
190              wrnMsg("ignore_controller(): argument may not be a negative event ID");  
191              return successResult();      VMFnResult* InstrumentScriptVMFunction_note_off::exec(VMFnArgs* args) {
192            AbstractEngineChannel* pEngineChannel =
193                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
194    
195            int velocity = (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : 127;
196            if (velocity < 0 || velocity > 127) {
197                errMsg("note_off(): argument 2 is an invalid velocity value");
198                return errorResult();
199            }
200    
201            if (args->arg(0)->exprType() == INT_EXPR) {
202                const ScriptID id = args->arg(0)->asInt()->evalInt();  
203                if (!id) {
204                    wrnMsg("note_off(): note ID for argument 1 may not be zero");
205                    return successResult();
206                }
207                if (!id.isNoteID()) {
208                    wrnMsg("note_off(): argument 1 is not a note ID");
209                    return successResult();
210                }
211    
212                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
213                if (!pNote) return successResult();
214    
215                Event e = pNote->cause;
216                e.Init(); // clear IDs
217                e.CopyTimeFrom(m_vm->m_event->cause); // set fragment time for "now"
218                e.Type = Event::type_stop_note;
219                e.Param.Note.ID = id.noteID();
220                e.Param.Note.Key = pNote->hostKey;
221                e.Param.Note.Velocity = velocity;
222    
223                pEngineChannel->ScheduleEventMicroSec(&e, 0);
224            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
225                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
226                for (int i = 0; i < ids->arraySize(); ++i) {
227                    const ScriptID id = ids->evalIntElement(i);
228                    if (!id || !id.isNoteID()) continue;
229    
230                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
231                    if (!pNote) continue;
232    
233                    Event e = pNote->cause;
234                    e.Init(); // clear IDs
235                    e.CopyTimeFrom(m_vm->m_event->cause); // set fragment time for "now"
236                    e.Type = Event::type_stop_note;
237                    e.Param.Note.ID = id.noteID();
238                    e.Param.Note.Key = pNote->hostKey;
239                    e.Param.Note.Velocity = velocity;
240    
241                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
242                }
243            }
244    
245            return successResult();
246        }
247    
248        // set_event_mark() function
249    
250        InstrumentScriptVMFunction_set_event_mark::InstrumentScriptVMFunction_set_event_mark(InstrumentScriptVM* parent)
251            : m_vm(parent)
252        {
253        }
254    
255        VMFnResult* InstrumentScriptVMFunction_set_event_mark::exec(VMFnArgs* args) {
256            const ScriptID id = args->arg(0)->asInt()->evalInt();
257            const int groupID = args->arg(1)->asInt()->evalInt();
258    
259            if (groupID < 0 || groupID >= INSTR_SCRIPT_EVENT_GROUPS) {
260                errMsg("set_event_mark(): argument 2 is an invalid group id");
261                return errorResult();
262            }
263    
264            AbstractEngineChannel* pEngineChannel =
265                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
266    
267            // check if the event/note still exists
268            switch (id.type()) {
269                case ScriptID::EVENT: {
270                    RTList<Event>::Iterator itEvent = pEngineChannel->pEngine->EventByID( id.eventID() );
271                    if (!itEvent) return successResult();
272                    break;
273                }
274                case ScriptID::NOTE: {
275                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
276                    if (!pNote) return successResult();
277                    break;
278                }
279            }
280    
281            pEngineChannel->pScript->eventGroups[groupID].insert(id);
282    
283            return successResult();
284        }
285    
286        // delete_event_mark() function
287    
288        InstrumentScriptVMFunction_delete_event_mark::InstrumentScriptVMFunction_delete_event_mark(InstrumentScriptVM* parent)
289            : m_vm(parent)
290        {
291        }
292    
293        VMFnResult* InstrumentScriptVMFunction_delete_event_mark::exec(VMFnArgs* args) {
294            const ScriptID id = args->arg(0)->asInt()->evalInt();
295            const int groupID = args->arg(1)->asInt()->evalInt();
296    
297            if (groupID < 0 || groupID >= INSTR_SCRIPT_EVENT_GROUPS) {
298                errMsg("delete_event_mark(): argument 2 is an invalid group id");
299                return errorResult();
300            }
301    
302            AbstractEngineChannel* pEngineChannel =
303                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
304    
305            pEngineChannel->pScript->eventGroups[groupID].erase(id);
306    
307            return successResult();
308        }
309    
310        // by_marks() function
311    
312        InstrumentScriptVMFunction_by_marks::InstrumentScriptVMFunction_by_marks(InstrumentScriptVM* parent)
313            : m_vm(parent)
314        {
315        }
316    
317        int InstrumentScriptVMFunction_by_marks::Result::arraySize() const {
318            return eventGroup->size();
319        }
320    
321        int InstrumentScriptVMFunction_by_marks::Result::evalIntElement(uint i) {
322            return (*eventGroup)[i];
323        }
324    
325        VMFnResult* InstrumentScriptVMFunction_by_marks::errorResult() {
326            m_result.eventGroup = NULL;
327            m_result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED);
328            return &m_result;
329        }
330    
331        VMFnResult* InstrumentScriptVMFunction_by_marks::successResult(EventGroup* eventGroup) {
332            m_result.eventGroup = eventGroup;
333            m_result.flags = STMT_SUCCESS;
334            return &m_result;
335        }
336    
337        VMFnResult* InstrumentScriptVMFunction_by_marks::exec(VMFnArgs* args) {
338            int groupID = args->arg(0)->asInt()->evalInt();
339    
340            if (groupID < 0 || groupID >= INSTR_SCRIPT_EVENT_GROUPS) {
341                errMsg("by_marks(): argument is an invalid group id");
342                return errorResult();
343            }
344    
345            AbstractEngineChannel* pEngineChannel =
346                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
347    
348            return successResult( &pEngineChannel->pScript->eventGroups[groupID] );
349        }
350    
351        // change_vol() function
352    
353        InstrumentScriptVMFunction_change_vol::InstrumentScriptVMFunction_change_vol(InstrumentScriptVM* parent)
354            : m_vm(parent)
355        {
356        }
357    
358        bool InstrumentScriptVMFunction_change_vol::acceptsArgType(int iArg, ExprType_t type) const {
359            if (iArg == 0)
360                return type == INT_EXPR || type == INT_ARR_EXPR;
361            else
362                return INT_EXPR;
363        }
364    
365        VMFnResult* InstrumentScriptVMFunction_change_vol::exec(VMFnArgs* args) {
366            int volume = args->arg(1)->asInt()->evalInt(); // volume change in milli dB
367            bool relative = (args->argsCount() >= 3) ? (args->arg(2)->asInt()->evalInt() & 1) : false;
368    
369            AbstractEngineChannel* pEngineChannel =
370                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
371    
372            if (args->arg(0)->exprType() == INT_EXPR) {
373                const ScriptID id = args->arg(0)->asInt()->evalInt();
374                if (!id) {
375                    wrnMsg("change_vol(): note ID for argument 1 may not be zero");
376                    return successResult();
377                }
378                if (!id.isNoteID()) {
379                    wrnMsg("change_vol(): argument 1 is not a note ID");
380                    return successResult();
381                }
382    
383                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
384                if (!pNote) return successResult();
385    
386                const float fVolumeLin = RTMath::DecibelToLinRatio(float(volume) / 1000.f);
387                // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
388                /*if (relative)
389                    pNote->Override.Volume *= fVolumeLin;
390                else
391                    pNote->Override.Volume = fVolumeLin;*/
392    
393                Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
394                e.Init(); // clear IDs
395                e.Type = Event::type_note_synth_param;
396                e.Param.NoteSynthParam.NoteID   = id.noteID();
397                e.Param.NoteSynthParam.Type     = Event::synth_param_volume;
398                e.Param.NoteSynthParam.Delta    = fVolumeLin;
399                e.Param.NoteSynthParam.Relative = relative;
400    
401                pEngineChannel->ScheduleEventMicroSec(&e, 0);
402            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
403                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
404                for (int i = 0; i < ids->arraySize(); ++i) {
405                    const ScriptID id = ids->evalIntElement(i);
406                    if (!id || !id.isNoteID()) continue;
407    
408                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
409                    if (!pNote) continue;
410    
411                    const float fVolumeLin = RTMath::DecibelToLinRatio(float(volume) / 1000.f);
412                    // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
413                    /*if (relative)
414                        pNote->Override.Volume *= fVolumeLin;
415                    else
416                        pNote->Override.Volume = fVolumeLin;*/
417    
418                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
419                    e.Init(); // clear IDs
420                    e.Type = Event::type_note_synth_param;
421                    e.Param.NoteSynthParam.NoteID   = id.noteID();
422                    e.Param.NoteSynthParam.Type     = Event::synth_param_volume;
423                    e.Param.NoteSynthParam.Delta    = fVolumeLin;
424                    e.Param.NoteSynthParam.Relative = relative;
425    
426                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
427                }
428            }
429    
430            return successResult();
431        }
432    
433        // change_tune() function
434    
435        InstrumentScriptVMFunction_change_tune::InstrumentScriptVMFunction_change_tune(InstrumentScriptVM* parent)
436            : m_vm(parent)
437        {
438        }
439    
440        bool InstrumentScriptVMFunction_change_tune::acceptsArgType(int iArg, ExprType_t type) const {
441            if (iArg == 0)
442                return type == INT_EXPR || type == INT_ARR_EXPR;
443            else
444                return INT_EXPR;
445        }
446    
447        VMFnResult* InstrumentScriptVMFunction_change_tune::exec(VMFnArgs* args) {
448            int tune = args->arg(1)->asInt()->evalInt(); // tuning change in milli cents
449            bool relative = (args->argsCount() >= 3) ? (args->arg(2)->asInt()->evalInt() & 1) : false;
450    
451            AbstractEngineChannel* pEngineChannel =
452                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
453    
454            if (args->arg(0)->exprType() == INT_EXPR) {
455                const ScriptID id = args->arg(0)->asInt()->evalInt();
456                if (!id) {
457                    wrnMsg("change_tune(): note ID for argument 1 may not be zero");
458                    return successResult();
459                }
460                if (!id.isNoteID()) {
461                    wrnMsg("change_tune(): argument 1 is not a note ID");
462                    return successResult();
463                }
464    
465                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
466                if (!pNote) return successResult();
467    
468                const float fFreqRatio = RTMath::CentsToFreqRatioUnlimited(float(tune) / 1000.f);
469                // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
470                /*if (relative)
471                    pNote->Override.Pitch *= fFreqRatio;
472                else
473                    pNote->Override.Pitch = fFreqRatio;*/
474    
475                Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
476                e.Init(); // clear IDs
477                e.Type = Event::type_note_synth_param;
478                e.Param.NoteSynthParam.NoteID   = id.noteID();
479                e.Param.NoteSynthParam.Type     = Event::synth_param_pitch;
480                e.Param.NoteSynthParam.Delta    = fFreqRatio;
481                e.Param.NoteSynthParam.Relative = relative;
482    
483                pEngineChannel->ScheduleEventMicroSec(&e, 0);
484            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
485                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
486                for (int i = 0; i < ids->arraySize(); ++i) {
487                    const ScriptID id = ids->evalIntElement(i);
488                    if (!id || !id.isNoteID()) continue;
489    
490                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
491                    if (!pNote) continue;
492    
493                    const float fFreqRatio = RTMath::CentsToFreqRatioUnlimited(float(tune) / 1000.f);
494                    // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
495                    /*if (relative)
496                        pNote->Override.Pitch *= fFreqRatio;
497                    else
498                        pNote->Override.Pitch = fFreqRatio;*/
499    
500                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
501                    e.Init(); // clear IDs
502                    e.Type = Event::type_note_synth_param;
503                    e.Param.NoteSynthParam.NoteID   = id.noteID();
504                    e.Param.NoteSynthParam.Type     = Event::synth_param_pitch;
505                    e.Param.NoteSynthParam.Delta    = fFreqRatio;
506                    e.Param.NoteSynthParam.Relative = relative;
507    
508                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
509                }
510            }
511    
512            return successResult();
513        }
514    
515        // change_pan() function
516    
517        InstrumentScriptVMFunction_change_pan::InstrumentScriptVMFunction_change_pan(InstrumentScriptVM* parent)
518            : m_vm(parent)
519        {
520        }
521    
522        bool InstrumentScriptVMFunction_change_pan::acceptsArgType(int iArg, ExprType_t type) const {
523            if (iArg == 0)
524                return type == INT_EXPR || type == INT_ARR_EXPR;
525            else
526                return INT_EXPR;
527        }
528    
529        VMFnResult* InstrumentScriptVMFunction_change_pan::exec(VMFnArgs* args) {
530            int pan = args->arg(1)->asInt()->evalInt();
531            bool relative = (args->argsCount() >= 3) ? (args->arg(2)->asInt()->evalInt() & 1) : false;
532    
533            if (pan > 1000) {
534                wrnMsg("change_pan(): argument 2 may not be larger than 1000");
535                pan = 1000;
536            } else if (pan < -1000) {
537                wrnMsg("change_pan(): argument 2 may not be smaller than -1000");
538                pan = -1000;
539          }          }
540    
541          AbstractEngineChannel* pEngineChannel =          AbstractEngineChannel* pEngineChannel =
542              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);              static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
543    
544          pEngineChannel->IgnoreEvent(id);          if (args->arg(0)->exprType() == INT_EXPR) {
545                const ScriptID id = args->arg(0)->asInt()->evalInt();
546                if (!id) {
547                    wrnMsg("change_pan(): note ID for argument 1 may not be zero");
548                    return successResult();
549                }
550                if (!id.isNoteID()) {
551                    wrnMsg("change_pan(): argument 1 is not a note ID");
552                    return successResult();
553                }
554    
555                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
556                if (!pNote) return successResult();
557    
558                const float fPan = float(pan) / 1000.f;
559                // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
560                /*if (relative) {
561                    pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);
562                } else {
563                    pNote->Override.Pan = fPan;
564                    pNote->Override.PanSources = 1; // only relevant on subsequent change_pan() calls on same note with 'relative' being set
565                }*/
566    
567                Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
568                e.Init(); // clear IDs
569                e.Type = Event::type_note_synth_param;
570                e.Param.NoteSynthParam.NoteID   = id.noteID();
571                e.Param.NoteSynthParam.Type     = Event::synth_param_pan;
572                e.Param.NoteSynthParam.Delta    = fPan;
573                e.Param.NoteSynthParam.Relative = relative;
574    
575                pEngineChannel->ScheduleEventMicroSec(&e, 0);
576            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
577                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
578                for (int i = 0; i < ids->arraySize(); ++i) {
579                    const ScriptID id = ids->evalIntElement(i);
580                    if (!id || !id.isNoteID()) continue;
581    
582                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
583                    if (!pNote) continue;
584    
585                    const float fPan = float(pan) / 1000.f;
586                    // commented out, performed by EngineBase::ProcessNoteSynthParam() for time accuracy behavior
587                    /*if (relative) {
588                        pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);
589                    } else {
590                        pNote->Override.Pan = fPan;
591                        pNote->Override.PanSources = 1; // only relevant on subsequent change_pan() calls on same note with 'relative' being set
592                    }*/
593    
594                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
595                    e.Init(); // clear IDs
596                    e.Type = Event::type_note_synth_param;
597                    e.Param.NoteSynthParam.NoteID   = id.noteID();
598                    e.Param.NoteSynthParam.Type     = Event::synth_param_pan;
599                    e.Param.NoteSynthParam.Delta    = fPan;
600                    e.Param.NoteSynthParam.Relative = relative;
601    
602                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
603                }
604            }
605    
606          return successResult();          return successResult();
607      }      }
608    
609        #define VM_FILTER_PAR_MAX_VALUE 1000000
610    
611        // change_cutoff() function
612    
613        InstrumentScriptVMFunction_change_cutoff::InstrumentScriptVMFunction_change_cutoff(InstrumentScriptVM* parent)
614            : m_vm(parent)
615        {
616        }
617    
618        bool InstrumentScriptVMFunction_change_cutoff::acceptsArgType(int iArg, ExprType_t type) const {
619            if (iArg == 0)
620                return type == INT_EXPR || type == INT_ARR_EXPR;
621            else
622                return INT_EXPR;
623        }
624    
625        VMFnResult* InstrumentScriptVMFunction_change_cutoff::exec(VMFnArgs* args) {
626            int cutoff = args->arg(1)->asInt()->evalInt();
627            if (cutoff > VM_FILTER_PAR_MAX_VALUE) {
628                wrnMsg("change_cutoff(): argument 2 may not be larger than 1000000");
629                cutoff = VM_FILTER_PAR_MAX_VALUE;
630            } else if (cutoff < 0) {
631                wrnMsg("change_cutoff(): argument 2 may not be negative");
632                cutoff = 0;
633            }
634    
635            AbstractEngineChannel* pEngineChannel =
636                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
637    
638            if (args->arg(0)->exprType() == INT_EXPR) {
639                const ScriptID id = args->arg(0)->asInt()->evalInt();
640                if (!id) {
641                    wrnMsg("change_cutoff(): note ID for argument 1 may not be zero");
642                    return successResult();
643                }
644                if (!id.isNoteID()) {
645                    wrnMsg("change_cutoff(): argument 1 is not a note ID");
646                    return successResult();
647                }
648    
649                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
650                if (!pNote) return successResult();
651    
652                const float fCutoff = float(cutoff) / float(VM_FILTER_PAR_MAX_VALUE);
653    
654                Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
655                e.Init(); // clear IDs
656                e.Type = Event::type_note_synth_param;
657                e.Param.NoteSynthParam.NoteID   = id.noteID();
658                e.Param.NoteSynthParam.Type     = Event::synth_param_cutoff;
659                e.Param.NoteSynthParam.Delta    = fCutoff;
660                e.Param.NoteSynthParam.Relative = false;
661    
662                pEngineChannel->ScheduleEventMicroSec(&e, 0);
663            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
664                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
665                for (int i = 0; i < ids->arraySize(); ++i) {
666                    const ScriptID id = ids->evalIntElement(i);
667                    if (!id || !id.isNoteID()) continue;
668    
669                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
670                    if (!pNote) continue;
671    
672                    const float fCutoff = float(cutoff) / float(VM_FILTER_PAR_MAX_VALUE);
673    
674                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
675                    e.Init(); // clear IDs
676                    e.Type = Event::type_note_synth_param;
677                    e.Param.NoteSynthParam.NoteID   = id.noteID();
678                    e.Param.NoteSynthParam.Type     = Event::synth_param_cutoff;
679                    e.Param.NoteSynthParam.Delta    = fCutoff;
680                    e.Param.NoteSynthParam.Relative = false;
681    
682                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
683                }
684            }
685    
686            return successResult();
687        }
688    
689        // change_reso() function
690        
691        InstrumentScriptVMFunction_change_reso::InstrumentScriptVMFunction_change_reso(InstrumentScriptVM* parent)
692            : m_vm(parent)
693        {
694        }
695    
696        bool InstrumentScriptVMFunction_change_reso::acceptsArgType(int iArg, ExprType_t type) const {
697            if (iArg == 0)
698                return type == INT_EXPR || type == INT_ARR_EXPR;
699            else
700                return INT_EXPR;
701        }
702    
703        VMFnResult* InstrumentScriptVMFunction_change_reso::exec(VMFnArgs* args) {
704            int resonance = args->arg(1)->asInt()->evalInt();
705            if (resonance > VM_FILTER_PAR_MAX_VALUE) {
706                wrnMsg("change_reso(): argument 2 may not be larger than 1000000");
707                resonance = VM_FILTER_PAR_MAX_VALUE;
708            } else if (resonance < 0) {
709                wrnMsg("change_reso(): argument 2 may not be negative");
710                resonance = 0;
711            }
712    
713            AbstractEngineChannel* pEngineChannel =
714                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
715    
716            if (args->arg(0)->exprType() == INT_EXPR) {
717                const ScriptID id = args->arg(0)->asInt()->evalInt();
718                if (!id) {
719                    wrnMsg("change_reso(): note ID for argument 1 may not be zero");
720                    return successResult();
721                }
722                if (!id.isNoteID()) {
723                    wrnMsg("change_reso(): argument 1 is not a note ID");
724                    return successResult();
725                }
726    
727                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
728                if (!pNote) return successResult();
729    
730                const float fResonance = float(resonance) / float(VM_FILTER_PAR_MAX_VALUE);
731    
732                Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
733                e.Init(); // clear IDs
734                e.Type = Event::type_note_synth_param;
735                e.Param.NoteSynthParam.NoteID   = id.noteID();
736                e.Param.NoteSynthParam.Type     = Event::synth_param_resonance;
737                e.Param.NoteSynthParam.Delta    = fResonance;
738                e.Param.NoteSynthParam.Relative = false;
739    
740                pEngineChannel->ScheduleEventMicroSec(&e, 0);
741            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
742                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
743                for (int i = 0; i < ids->arraySize(); ++i) {
744                    const ScriptID id = ids->evalIntElement(i);
745                    if (!id || !id.isNoteID()) continue;
746    
747                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
748                    if (!pNote) continue;
749    
750                    const float fResonance = float(resonance) / float(VM_FILTER_PAR_MAX_VALUE);
751    
752                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
753                    e.Init(); // clear IDs
754                    e.Type = Event::type_note_synth_param;
755                    e.Param.NoteSynthParam.NoteID   = id.noteID();
756                    e.Param.NoteSynthParam.Type     = Event::synth_param_resonance;
757                    e.Param.NoteSynthParam.Delta    = fResonance;
758                    e.Param.NoteSynthParam.Relative = false;
759    
760                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
761                }
762            }
763    
764            return successResult();
765        }
766    
767        // event_status() function
768    
769        InstrumentScriptVMFunction_event_status::InstrumentScriptVMFunction_event_status(InstrumentScriptVM* parent)
770            : m_vm(parent)
771        {
772        }
773    
774        VMFnResult* InstrumentScriptVMFunction_event_status::exec(VMFnArgs* args) {
775            AbstractEngineChannel* pEngineChannel =
776                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
777    
778            const ScriptID id = args->arg(0)->asInt()->evalInt();
779            if (!id) {
780                wrnMsg("event_status(): note ID for argument 1 may not be zero");
781                return successResult(EVENT_STATUS_INACTIVE);
782            }
783            if (!id.isNoteID()) {
784                wrnMsg("event_status(): argument 1 is not a note ID");
785                return successResult(EVENT_STATUS_INACTIVE);
786            }
787    
788            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
789            return successResult(pNote ? EVENT_STATUS_NOTE_QUEUE : EVENT_STATUS_INACTIVE);
790        }
791    
792  } // namespace LinuxSampler  } // namespace LinuxSampler
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