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

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

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

revision 3188 by schoenebeck, Fri May 19 14:23:12 2017 UTC revision 3296 by schoenebeck, Wed Jun 28 09:45:56 2017 UTC
# Line 23  namespace LinuxSampler { Line 23  namespace LinuxSampler {
23      VMFnResult* InstrumentScriptVMFunction_play_note::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_play_note::exec(VMFnArgs* args) {
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;
         int sampleoffset = (args->argsCount() >= 3) ? args->arg(2)->asInt()->evalInt() : 0;  
26          int duration = (args->argsCount() >= 4) ? args->arg(3)->asInt()->evalInt() : 0; //TODO: -1 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
27    
28          if (note < 0 || note > 127) {          if (note < 0 || note > 127) {
# Line 36  namespace LinuxSampler { Line 35  namespace LinuxSampler {
35              return errorResult(0);              return errorResult(0);
36          }          }
37    
38          if (sampleoffset < 0) {          if (duration < -2) {
39              errMsg("play_note(): argument 3 may not be a negative sample offset");              errMsg("play_note(): argument 4 must be a duration value of at least -2 or higher");
             return errorResult(0);  
         } else if (sampleoffset != 0) {  
             wrnMsg("play_note(): argument 3 does not support a sample offset other than 0 yet");  
         }  
   
         if (duration < -1) {  
             errMsg("play_note(): argument 4 must be a duration value of at least -1 or higher");  
40              return errorResult(0);              return errorResult(0);
41          }          }
42    
# Line 63  namespace LinuxSampler { Line 55  namespace LinuxSampler {
55                  return errorResult(0);                  return errorResult(0);
56              }              }
57              e.Param.Note.ParentNoteID = m_vm->m_event->cause.Param.Note.ID;              e.Param.Note.ParentNoteID = m_vm->m_event->cause.Param.Note.ID;
58                // check if that requested parent note is actually still alive
59                NoteBase* pParentNote =
60                    pEngineChannel->pEngine->NoteByID( e.Param.Note.ParentNoteID );
61                // if parent note is already gone then this new note is not required anymore
62                if (!pParentNote)
63                    return successResult(0);
64          }          }
65    
66          const note_id_t id = pEngineChannel->ScheduleNoteMicroSec(&e, 0);          const note_id_t id = pEngineChannel->ScheduleNoteMicroSec(&e, 0);
67    
68            // if a sample offset is supplied, assign the offset as override
69            // to the previously created Note object
70            if (args->argsCount() >= 3) {
71                int sampleoffset = args->arg(2)->asInt()->evalInt();
72                if (sampleoffset >= 0) {
73                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID(id);
74                    if (pNote) {
75                        pNote->Override.SampleOffset = sampleoffset;
76                    }
77                } else if (sampleoffset < -1) {
78                    errMsg("play_note(): sample offset of argument 3 may not be less than -1");
79                }
80            }
81    
82          // if a duration is supplied (and play-note event was scheduled          // if a duration is supplied (and play-note event was scheduled
83          // successfully above), then schedule a subsequent stop-note event          // successfully above), then schedule a subsequent stop-note event
84          if (id && duration > 0) {          if (id && duration > 0) {
# Line 136  namespace LinuxSampler { Line 148  namespace LinuxSampler {
148          AbstractEngineChannel* pEngineChannel =          AbstractEngineChannel* pEngineChannel =
149                  static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);                  static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
150    
151          if (args->arg(0)->exprType() == INT_EXPR) {          if (args->argsCount() == 0 || args->arg(0)->exprType() == INT_EXPR) {
152              const ScriptID id = args->arg(0)->asInt()->evalInt();              const ScriptID id = (args->argsCount() >= 1) ? args->arg(0)->asInt()->evalInt() : m_vm->m_event->id;
153              if (!id) {              if (!id && args->argsCount() >= 1) {
154                  wrnMsg("ignore_event(): event ID argument may not be zero");                  wrnMsg("ignore_event(): event ID argument may not be zero");
155                  // not errorResult(), because that would abort the script, not intentional in this case                  // not errorResult(), because that would abort the script, not intentional in this case
156                  return successResult();                  return successResult();
# Line 385  namespace LinuxSampler { Line 397  namespace LinuxSampler {
397              if (!pNote) return successResult();              if (!pNote) return successResult();
398    
399              // if change_vol() was called immediately after note was triggered              // if change_vol() was called immediately after note was triggered
400              // then immediately apply the volume to note object              // then immediately apply the volume to note object, but only if
401              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              // change_vol_time() has not been called before
402                if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime &&
403                    pNote->Override.VolumeTime <= DEFAULT_NOTE_VOLUME_TIME_S)
404                {
405                  if (relative)                  if (relative)
406                      pNote->Override.Volume *= fVolumeLin;                      pNote->Override.Volume *= fVolumeLin;
407                  else                  else
# Line 412  namespace LinuxSampler { Line 427  namespace LinuxSampler {
427                  if (!pNote) continue;                  if (!pNote) continue;
428    
429                  // if change_vol() was called immediately after note was triggered                  // if change_vol() was called immediately after note was triggered
430                  // then immediately apply the volume to Note object                  // then immediately apply the volume to Note object, but only if
431                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  // change_vol_time() has not been called before
432                    if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime &&
433                        pNote->Override.VolumeTime <= DEFAULT_NOTE_VOLUME_TIME_S)
434                    {
435                      if (relative)                      if (relative)
436                          pNote->Override.Volume *= fVolumeLin;                          pNote->Override.Volume *= fVolumeLin;
437                      else                      else
# Line 472  namespace LinuxSampler { Line 490  namespace LinuxSampler {
490              if (!pNote) return successResult();              if (!pNote) return successResult();
491    
492              // if change_tune() was called immediately after note was triggered              // if change_tune() was called immediately after note was triggered
493              // then immediately apply the tuning to Note object              // then immediately apply the tuning to Note object, but only if
494              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              // change_tune_time() has not been called before
495                if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime &&
496                    pNote->Override.PitchTime <= DEFAULT_NOTE_PITCH_TIME_S)
497                {
498                  if (relative)                  if (relative)
499                      pNote->Override.Pitch *= fFreqRatio;                      pNote->Override.Pitch *= fFreqRatio;
500                  else                  else
# Line 499  namespace LinuxSampler { Line 520  namespace LinuxSampler {
520                  if (!pNote) continue;                  if (!pNote) continue;
521    
522                  // if change_tune() was called immediately after note was triggered                  // if change_tune() was called immediately after note was triggered
523                  // then immediately apply the tuning to Note object                  // then immediately apply the tuning to Note object, but only if
524                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  // change_tune_time() has not been called before
525                    if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime &&
526                        pNote->Override.PitchTime <= DEFAULT_NOTE_PITCH_TIME_S)
527                    {
528                      if (relative)                      if (relative)
529                          pNote->Override.Pitch *= fFreqRatio;                          pNote->Override.Pitch *= fFreqRatio;
530                      else                      else
# Line 568  namespace LinuxSampler { Line 592  namespace LinuxSampler {
592    
593              // if change_pan() was called immediately after note was triggered              // if change_pan() was called immediately after note was triggered
594              // then immediately apply the panning to Note object              // then immediately apply the panning to Note object
595              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
596                  if (relative) {                  if (relative) {
597                      pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);                      pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);
598                  } else {                  } else {
# Line 597  namespace LinuxSampler { Line 621  namespace LinuxSampler {
621    
622                  // if change_pan() was called immediately after note was triggered                  // if change_pan() was called immediately after note was triggered
623                  // then immediately apply the panning to Note object                  // then immediately apply the panning to Note object
624                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
625                      if (relative) {                      if (relative) {
626                          pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);                          pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, fPan, ++pNote->Override.PanSources);
627                      } else {                      } else {
# Line 668  namespace LinuxSampler { Line 692  namespace LinuxSampler {
692    
693              // if change_cutoff() was called immediately after note was triggered              // if change_cutoff() was called immediately after note was triggered
694              // then immediately apply cutoff to Note object              // then immediately apply cutoff to Note object
695              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
696                  pNote->Override.Cutoff = fCutoff;                  pNote->Override.Cutoff = fCutoff;
697              } else { // otherwise schedule cutoff change ...              } else { // otherwise schedule cutoff change ...
698                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 692  namespace LinuxSampler { Line 716  namespace LinuxSampler {
716    
717                  // if change_cutoff() was called immediately after note was triggered                  // if change_cutoff() was called immediately after note was triggered
718                  // then immediately apply cutoff to Note object                  // then immediately apply cutoff to Note object
719                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
720                      pNote->Override.Cutoff = fCutoff;                      pNote->Override.Cutoff = fCutoff;
721                  } else { // otherwise schedule cutoff change ...                  } else { // otherwise schedule cutoff change ...
722                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 755  namespace LinuxSampler { Line 779  namespace LinuxSampler {
779    
780              // if change_reso() was called immediately after note was triggered              // if change_reso() was called immediately after note was triggered
781              // then immediately apply resonance to Note object              // then immediately apply resonance to Note object
782              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
783                  pNote->Override.Resonance = fResonance;                  pNote->Override.Resonance = fResonance;
784              } else { // otherwise schedule resonance change ...              } else { // otherwise schedule resonance change ...
785                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 779  namespace LinuxSampler { Line 803  namespace LinuxSampler {
803    
804                  // if change_reso() was called immediately after note was triggered                  // if change_reso() was called immediately after note was triggered
805                  // then immediately apply resonance to Note object                  // then immediately apply resonance to Note object
806                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
807                      pNote->Override.Resonance = fResonance;                      pNote->Override.Resonance = fResonance;
808                  } else { // otherwise schedule resonance change ...                  } else { // otherwise schedule resonance change ...
809                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 842  namespace LinuxSampler { Line 866  namespace LinuxSampler {
866    
867              // if change_attack() was called immediately after note was triggered              // if change_attack() was called immediately after note was triggered
868              // then immediately apply attack to Note object              // then immediately apply attack to Note object
869              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
870                  pNote->Override.Attack = fAttack;                  pNote->Override.Attack = fAttack;
871              } else { // otherwise schedule attack change ...              } else { // otherwise schedule attack change ...
872                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 866  namespace LinuxSampler { Line 890  namespace LinuxSampler {
890    
891                  // if change_attack() was called immediately after note was triggered                  // if change_attack() was called immediately after note was triggered
892                  // then immediately apply attack to Note object                  // then immediately apply attack to Note object
893                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
894                      pNote->Override.Attack = fAttack;                      pNote->Override.Attack = fAttack;
895                  } else { // otherwise schedule attack change ...                  } else { // otherwise schedule attack change ...
896                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 929  namespace LinuxSampler { Line 953  namespace LinuxSampler {
953    
954              // if change_decay() was called immediately after note was triggered              // if change_decay() was called immediately after note was triggered
955              // then immediately apply decay to Note object              // then immediately apply decay to Note object
956              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
957                  pNote->Override.Decay = fDecay;                  pNote->Override.Decay = fDecay;
958              } else { // otherwise schedule decay change ...              } else { // otherwise schedule decay change ...
959                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 953  namespace LinuxSampler { Line 977  namespace LinuxSampler {
977    
978                  // if change_decay() was called immediately after note was triggered                  // if change_decay() was called immediately after note was triggered
979                  // then immediately apply decay to Note object                  // then immediately apply decay to Note object
980                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
981                      pNote->Override.Decay = fDecay;                      pNote->Override.Decay = fDecay;
982                  } else { // otherwise schedule decay change ...                  } else { // otherwise schedule decay change ...
983                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1016  namespace LinuxSampler { Line 1040  namespace LinuxSampler {
1040    
1041              // if change_release() was called immediately after note was triggered              // if change_release() was called immediately after note was triggered
1042              // then immediately apply relase to Note object              // then immediately apply relase to Note object
1043              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1044                  pNote->Override.Release = fRelease;                  pNote->Override.Release = fRelease;
1045              } else { // otherwise schedule release change ...              } else { // otherwise schedule release change ...
1046                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1040  namespace LinuxSampler { Line 1064  namespace LinuxSampler {
1064    
1065                  // if change_release() was called immediately after note was triggered                  // if change_release() was called immediately after note was triggered
1066                  // then immediately apply relase to Note object                  // then immediately apply relase to Note object
1067                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1068                      pNote->Override.Release = fRelease;                      pNote->Override.Release = fRelease;
1069                  } else { // otherwise schedule release change ...                  } else { // otherwise schedule release change ...
1070                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1059  namespace LinuxSampler { Line 1083  namespace LinuxSampler {
1083          return successResult();          return successResult();
1084      }      }
1085    
1086        // template for change_*() functions
1087    
1088      bool VMChangeSynthParamFunction::acceptsArgType(int iArg, ExprType_t type) const {      bool VMChangeSynthParamFunction::acceptsArgType(int iArg, ExprType_t type) const {
1089          if (iArg == 0)          if (iArg == 0)
1090              return type == INT_EXPR || type == INT_ARR_EXPR;              return type == INT_EXPR || type == INT_ARR_EXPR;
# Line 1066  namespace LinuxSampler { Line 1092  namespace LinuxSampler {
1092              return type == INT_EXPR;              return type == INT_EXPR;
1093      }      }
1094    
1095        // Arbitrarily chosen constant value symbolizing "no limit".
1096        #define NO_LIMIT 1315916909
1097    
1098      template<float NoteBase::_Override::*T_noteParam, int T_synthParam,      template<float NoteBase::_Override::*T_noteParam, int T_synthParam,
1099               bool T_isNormalizedParam, int T_maxValue, int T_minValue>               bool T_isNormalizedParam, int T_maxValue, int T_minValue>
1100      VMFnResult* VMChangeSynthParamFunction::execTemplate(VMFnArgs* args, const char* functionName) {      VMFnResult* VMChangeSynthParamFunction::execTemplate(VMFnArgs* args, const char* functionName) {
1101          int value = args->arg(1)->asInt()->evalInt();          int value = args->arg(1)->asInt()->evalInt();
1102          if (value > T_maxValue) {          if (T_maxValue != NO_LIMIT && value > T_maxValue) {
1103              wrnMsg(String(functionName) + "(): argument 2 may not be larger than " + ToString(T_maxValue));              wrnMsg(String(functionName) + "(): argument 2 may not be larger than " + ToString(T_maxValue));
1104              value = T_maxValue;              value = T_maxValue;
1105          } else if (value < T_minValue) {          } else if (T_minValue != NO_LIMIT && value < T_minValue) {
1106              if (T_minValue == 0)              if (T_minValue == 0)
1107                  wrnMsg(String(functionName) + "(): argument 2 may not be negative");                  wrnMsg(String(functionName) + "(): argument 2 may not be negative");
1108              else              else
# Line 1104  namespace LinuxSampler { Line 1133  namespace LinuxSampler {
1133              // if this change_*() script function was called immediately after              // if this change_*() script function was called immediately after
1134              // note was triggered then immediately apply the synth parameter              // note was triggered then immediately apply the synth parameter
1135              // change to Note object              // change to Note object
1136              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1137                  pNote->Override.*T_noteParam = fValue;                  pNote->Override.*T_noteParam = fValue;
1138              } else { // otherwise schedule this synth parameter change ...              } else { // otherwise schedule this synth parameter change ...
1139                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1129  namespace LinuxSampler { Line 1158  namespace LinuxSampler {
1158                  // if this change_*() script function was called immediately after                  // if this change_*() script function was called immediately after
1159                  // note was triggered then immediately apply the synth parameter                  // note was triggered then immediately apply the synth parameter
1160                  // change to Note object                  // change to Note object
1161                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1162                      pNote->Override.*T_noteParam = fValue;                      pNote->Override.*T_noteParam = fValue;
1163                  } else { // otherwise schedule this synth parameter change ...                  } else { // otherwise schedule this synth parameter change ...
1164                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1153  namespace LinuxSampler { Line 1182  namespace LinuxSampler {
1182      VMFnResult* InstrumentScriptVMFunction_change_amp_lfo_depth::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_amp_lfo_depth::exec(VMFnArgs* args) {
1183          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1184                      &NoteBase::_Override::AmpLFODepth,                      &NoteBase::_Override::AmpLFODepth,
1185                      Event::synth_param_amp_lfo_depth, true>( args, "change_amp_lfo_depth" );                      Event::synth_param_amp_lfo_depth,
1186                        true, 1000000, 0>( args, "change_amp_lfo_depth" );
1187      }      }
1188    
1189      // change_amp_lfo_freq() function      // change_amp_lfo_freq() function
# Line 1161  namespace LinuxSampler { Line 1191  namespace LinuxSampler {
1191      VMFnResult* InstrumentScriptVMFunction_change_amp_lfo_freq::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_amp_lfo_freq::exec(VMFnArgs* args) {
1192          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1193                      &NoteBase::_Override::AmpLFOFreq,                      &NoteBase::_Override::AmpLFOFreq,
1194                      Event::synth_param_amp_lfo_freq, true>( args, "change_amp_lfo_freq" );                      Event::synth_param_amp_lfo_freq,
1195                        true, 1000000, 0>( args, "change_amp_lfo_freq" );
1196      }      }
1197    
1198      // change_pitch_lfo_depth() function      // change_pitch_lfo_depth() function
# Line 1169  namespace LinuxSampler { Line 1200  namespace LinuxSampler {
1200      VMFnResult* InstrumentScriptVMFunction_change_pitch_lfo_depth::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_pitch_lfo_depth::exec(VMFnArgs* args) {
1201          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1202                      &NoteBase::_Override::PitchLFODepth,                      &NoteBase::_Override::PitchLFODepth,
1203                      Event::synth_param_pitch_lfo_depth, true>( args, "change_pitch_lfo_depth" );                      Event::synth_param_pitch_lfo_depth,
1204                        true, 1000000, 0>( args, "change_pitch_lfo_depth" );
1205      }      }
1206    
1207      // change_pitch_lfo_freq() function      // change_pitch_lfo_freq() function
# Line 1177  namespace LinuxSampler { Line 1209  namespace LinuxSampler {
1209      VMFnResult* InstrumentScriptVMFunction_change_pitch_lfo_freq::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_pitch_lfo_freq::exec(VMFnArgs* args) {
1210          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1211                      &NoteBase::_Override::PitchLFOFreq,                      &NoteBase::_Override::PitchLFOFreq,
1212                      Event::synth_param_pitch_lfo_freq, true>( args, "change_pitch_lfo_freq" );                      Event::synth_param_pitch_lfo_freq,
1213                        true, 1000000, 0>( args, "change_pitch_lfo_freq" );
1214      }      }
1215    
1216      // change_vol_time() function      // change_vol_time() function
# Line 1185  namespace LinuxSampler { Line 1218  namespace LinuxSampler {
1218      VMFnResult* InstrumentScriptVMFunction_change_vol_time::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_vol_time::exec(VMFnArgs* args) {
1219          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1220                      &NoteBase::_Override::VolumeTime,                      &NoteBase::_Override::VolumeTime,
1221                      Event::synth_param_volume_time, false>( args, "change_vol_time" );                      Event::synth_param_volume_time,
1222                        false, NO_LIMIT, 0>( args, "change_vol_time" );
1223      }      }
1224    
1225      // change_tune_time() function      // change_tune_time() function
# Line 1193  namespace LinuxSampler { Line 1227  namespace LinuxSampler {
1227      VMFnResult* InstrumentScriptVMFunction_change_tune_time::exec(VMFnArgs* args) {      VMFnResult* InstrumentScriptVMFunction_change_tune_time::exec(VMFnArgs* args) {
1228          return VMChangeSynthParamFunction::execTemplate<          return VMChangeSynthParamFunction::execTemplate<
1229                      &NoteBase::_Override::PitchTime,                      &NoteBase::_Override::PitchTime,
1230                      Event::synth_param_pitch_time, false>( args, "change_tune_time" );                      Event::synth_param_pitch_time,
1231                        false, NO_LIMIT, 0>( args, "change_tune_time" );
1232        }
1233    
1234        // template for change_*_curve() functions
1235    
1236        bool VMChangeFadeCurveFunction::acceptsArgType(int iArg, ExprType_t type) const {
1237            if (iArg == 0)
1238                return type == INT_EXPR || type == INT_ARR_EXPR;
1239            else
1240                return type == INT_EXPR;
1241        }
1242    
1243        template<fade_curve_t NoteBase::_Override::*T_noteParam, int T_synthParam>
1244        VMFnResult* VMChangeFadeCurveFunction::execTemplate(VMFnArgs* args, const char* functionName) {
1245            int value = args->arg(1)->asInt()->evalInt();
1246            switch (value) {
1247                case FADE_CURVE_LINEAR:
1248                case FADE_CURVE_EASE_IN_EASE_OUT:
1249                    break;
1250                default:
1251                    wrnMsg(String(functionName) + "(): invalid curve type passed as argument 2");
1252                    return successResult();
1253            }
1254    
1255            AbstractEngineChannel* pEngineChannel =
1256                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1257    
1258            if (args->arg(0)->exprType() == INT_EXPR) {
1259                const ScriptID id = args->arg(0)->asInt()->evalInt();
1260                if (!id) {
1261                    wrnMsg(String(functionName) + "(): note ID for argument 1 may not be zero");
1262                    return successResult();
1263                }
1264                if (!id.isNoteID()) {
1265                    wrnMsg(String(functionName) + "(): argument 1 is not a note ID");
1266                    return successResult();
1267                }
1268    
1269                NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1270                if (!pNote) return successResult();
1271    
1272                // if this change_*_curve() script function was called immediately after
1273                // note was triggered then immediately apply the synth parameter
1274                // change to Note object
1275                if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1276                    pNote->Override.*T_noteParam = (fade_curve_t) value;
1277                } else { // otherwise schedule this synth parameter change ...
1278                    Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
1279                    e.Init(); // clear IDs
1280                    e.Type = Event::type_note_synth_param;
1281                    e.Param.NoteSynthParam.NoteID   = id.noteID();
1282                    e.Param.NoteSynthParam.Type     = (Event::synth_param_t) T_synthParam;
1283                    e.Param.NoteSynthParam.Delta    = value;
1284                    e.Param.NoteSynthParam.Relative = false;
1285    
1286                    pEngineChannel->ScheduleEventMicroSec(&e, 0);
1287                }
1288            } else if (args->arg(0)->exprType() == INT_ARR_EXPR) {
1289                VMIntArrayExpr* ids = args->arg(0)->asIntArray();
1290                for (int i = 0; i < ids->arraySize(); ++i) {
1291                    const ScriptID id = ids->evalIntElement(i);
1292                    if (!id || !id.isNoteID()) continue;
1293    
1294                    NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1295                    if (!pNote) continue;
1296    
1297                    // if this change_*_curve() script function was called immediately after
1298                    // note was triggered then immediately apply the synth parameter
1299                    // change to Note object
1300                    if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1301                        pNote->Override.*T_noteParam = (fade_curve_t) value;
1302                    } else { // otherwise schedule this synth parameter change ...
1303                        Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
1304                        e.Init(); // clear IDs
1305                        e.Type = Event::type_note_synth_param;
1306                        e.Param.NoteSynthParam.NoteID   = id.noteID();
1307                        e.Param.NoteSynthParam.Type     = (Event::synth_param_t) T_synthParam;
1308                        e.Param.NoteSynthParam.Delta    = value;
1309                        e.Param.NoteSynthParam.Relative = false;
1310    
1311                        pEngineChannel->ScheduleEventMicroSec(&e, 0);
1312                    }
1313                }
1314            }
1315    
1316            return successResult();
1317        }
1318    
1319        // change_vol_curve() function
1320    
1321        VMFnResult* InstrumentScriptVMFunction_change_vol_curve::exec(VMFnArgs* args) {
1322            return VMChangeFadeCurveFunction::execTemplate<
1323                        &NoteBase::_Override::VolumeCurve,
1324                        Event::synth_param_volume_curve>( args, "change_vol_curve" );
1325        }
1326    
1327        // change_tune_curve() function
1328    
1329        VMFnResult* InstrumentScriptVMFunction_change_tune_curve::exec(VMFnArgs* args) {
1330            return VMChangeFadeCurveFunction::execTemplate<
1331                        &NoteBase::_Override::PitchCurve,
1332                        Event::synth_param_pitch_curve>( args, "change_tune_curve" );
1333      }      }
1334    
1335      // fade_in() function      // fade_in() function
# Line 1238  namespace LinuxSampler { Line 1374  namespace LinuxSampler {
1374              // if fade_in() was called immediately after note was triggered              // if fade_in() was called immediately after note was triggered
1375              // then immediately apply a start volume of zero to Note object,              // then immediately apply a start volume of zero to Note object,
1376              // as well as the fade in duration              // as well as the fade in duration
1377              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1378                  pNote->Override.Volume = 0.f;                  pNote->Override.Volume = 0.f;
1379                  pNote->Override.VolumeTime = fDuration;                  pNote->Override.VolumeTime = fDuration;
1380              } else { // otherwise schedule a "volume time" change with the requested fade in duration ...              } else { // otherwise schedule a "volume time" change with the requested fade in duration ...
# Line 1280  namespace LinuxSampler { Line 1416  namespace LinuxSampler {
1416                  // if fade_in() was called immediately after note was triggered                  // if fade_in() was called immediately after note was triggered
1417                  // then immediately apply a start volume of zero to Note object,                  // then immediately apply a start volume of zero to Note object,
1418                  // as well as the fade in duration                  // as well as the fade in duration
1419                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1420                      pNote->Override.Volume = 0.f;                      pNote->Override.Volume = 0.f;
1421                      pNote->Override.VolumeTime = fDuration;                      pNote->Override.VolumeTime = fDuration;
1422                  } else { // otherwise schedule a "volume time" change with the requested fade in duration ...                  } else { // otherwise schedule a "volume time" change with the requested fade in duration ...
# Line 1359  namespace LinuxSampler { Line 1495  namespace LinuxSampler {
1495    
1496              // if fade_out() was called immediately after note was triggered              // if fade_out() was called immediately after note was triggered
1497              // then immediately apply fade out duration to Note object              // then immediately apply fade out duration to Note object
1498              if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {              if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1499                  pNote->Override.VolumeTime = fDuration;                  pNote->Override.VolumeTime = fDuration;
1500              } else { // otherwise schedule a "volume time" change with the requested fade out duration ...              } else { // otherwise schedule a "volume time" change with the requested fade out duration ...
1501                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                  Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1411  namespace LinuxSampler { Line 1547  namespace LinuxSampler {
1547    
1548                  // if fade_out() was called immediately after note was triggered                  // if fade_out() was called immediately after note was triggered
1549                  // then immediately apply fade out duration to Note object                  // then immediately apply fade out duration to Note object
1550                  if (m_vm->m_event->cause.SchedTime() == pNote->triggerSchedTime) {                  if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1551                      pNote->Override.VolumeTime = fDuration;                      pNote->Override.VolumeTime = fDuration;
1552                  } else { // otherwise schedule a "volume time" change with the requested fade out duration ...                  } else { // otherwise schedule a "volume time" change with the requested fade out duration ...
1553                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"                      Event e = m_vm->m_event->cause; // copy to get fragment time for "now"
# Line 1458  namespace LinuxSampler { Line 1594  namespace LinuxSampler {
1594          return successResult();          return successResult();
1595      }      }
1596    
1597        // get_event_par() function
1598    
1599        InstrumentScriptVMFunction_get_event_par::InstrumentScriptVMFunction_get_event_par(InstrumentScriptVM* parent)
1600            : m_vm(parent)
1601        {
1602        }
1603    
1604        VMFnResult* InstrumentScriptVMFunction_get_event_par::exec(VMFnArgs* args) {
1605            AbstractEngineChannel* pEngineChannel =
1606                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1607    
1608            const ScriptID id = args->arg(0)->asInt()->evalInt();
1609            if (!id) {
1610                wrnMsg("get_event_par(): note ID for argument 1 may not be zero");
1611                return successResult(0);
1612            }
1613            if (!id.isNoteID()) {
1614                wrnMsg("get_event_par(): argument 1 is not a note ID");
1615                return successResult(0);
1616            }
1617    
1618            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1619            if (!pNote) {
1620                wrnMsg("get_event_par(): no note alive with that note ID of argument 1");
1621                return successResult(0);
1622            }
1623    
1624            const int parameter = args->arg(1)->asInt()->evalInt();
1625            switch (parameter) {
1626                case EVENT_PAR_NOTE:
1627                    return successResult(pNote->cause.Param.Note.Key);
1628                case EVENT_PAR_VELOCITY:
1629                    return successResult(pNote->cause.Param.Note.Velocity);
1630                case EVENT_PAR_VOLUME:
1631                    return successResult(
1632                        RTMath::LinRatioToDecibel(pNote->Override.Volume) * 1000.f
1633                    );
1634                case EVENT_PAR_TUNE:
1635                    return successResult(
1636                         RTMath::FreqRatioToCents(pNote->Override.Pitch) * 1000.f
1637                    );
1638                case EVENT_PAR_0:
1639                    return successResult(pNote->userPar[0]);
1640                case EVENT_PAR_1:
1641                    return successResult(pNote->userPar[1]);
1642                case EVENT_PAR_2:
1643                    return successResult(pNote->userPar[2]);
1644                case EVENT_PAR_3:
1645                    return successResult(pNote->userPar[3]);
1646            }
1647    
1648            wrnMsg("get_event_par(): argument 2 is an invalid event parameter");
1649            return successResult(0);
1650        }
1651    
1652        // set_event_par() function
1653    
1654        InstrumentScriptVMFunction_set_event_par::InstrumentScriptVMFunction_set_event_par(InstrumentScriptVM* parent)
1655            : m_vm(parent)
1656        {
1657        }
1658    
1659        VMFnResult* InstrumentScriptVMFunction_set_event_par::exec(VMFnArgs* args) {
1660            AbstractEngineChannel* pEngineChannel =
1661                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1662    
1663            const ScriptID id = args->arg(0)->asInt()->evalInt();
1664            if (!id) {
1665                wrnMsg("set_event_par(): note ID for argument 1 may not be zero");
1666                return successResult();
1667            }
1668            if (!id.isNoteID()) {
1669                wrnMsg("set_event_par(): argument 1 is not a note ID");
1670                return successResult();
1671            }
1672    
1673            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1674            if (!pNote) return successResult();
1675    
1676            const int parameter = args->arg(1)->asInt()->evalInt();
1677            const int value     = args->arg(2)->asInt()->evalInt();
1678    
1679            switch (parameter) {
1680                case EVENT_PAR_NOTE:
1681                    if (value < 0 || value > 127) {
1682                        wrnMsg("set_event_par(): note number of argument 3 is out of range");
1683                        return successResult();
1684                    }
1685                    if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1686                        pNote->cause.Param.Note.Key = value;
1687                        m_vm->m_event->cause.Param.Note.Key = value;
1688                    } else {
1689                        wrnMsg("set_event_par(): note number can only be changed when note is new");
1690                    }
1691                    return successResult();
1692                case EVENT_PAR_VELOCITY:
1693                    if (value < 0 || value > 127) {
1694                        wrnMsg("set_event_par(): velocity of argument 3 is out of range");
1695                        return successResult();
1696                    }
1697                    if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1698                        pNote->cause.Param.Note.Velocity = value;
1699                        m_vm->m_event->cause.Param.Note.Velocity = value;
1700                    } else {
1701                        wrnMsg("set_event_par(): velocity can only be changed when note is new");
1702                    }
1703                    return successResult();
1704                case EVENT_PAR_VOLUME:
1705                    wrnMsg("set_event_par(): changing volume by this function is currently not supported, use change_vol() instead");
1706                    return successResult();
1707                case EVENT_PAR_TUNE:
1708                    wrnMsg("set_event_par(): changing tune by this function is currently not supported, use change_tune() instead");
1709                    return successResult();
1710                case EVENT_PAR_0:
1711                    pNote->userPar[0] = value;
1712                    return successResult();
1713                case EVENT_PAR_1:
1714                    pNote->userPar[1] = value;
1715                    return successResult();
1716                case EVENT_PAR_2:
1717                    pNote->userPar[2] = value;
1718                    return successResult();
1719                case EVENT_PAR_3:
1720                    pNote->userPar[3] = value;
1721                    return successResult();
1722            }
1723    
1724            wrnMsg("set_event_par(): argument 2 is an invalid event parameter");
1725            return successResult();
1726        }
1727    
1728        // change_note() function
1729    
1730        InstrumentScriptVMFunction_change_note::InstrumentScriptVMFunction_change_note(InstrumentScriptVM* parent)
1731        : m_vm(parent)
1732        {
1733        }
1734    
1735        VMFnResult* InstrumentScriptVMFunction_change_note::exec(VMFnArgs* args) {
1736            AbstractEngineChannel* pEngineChannel =
1737                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1738    
1739            const ScriptID id = args->arg(0)->asInt()->evalInt();
1740            if (!id) {
1741                wrnMsg("change_note(): note ID for argument 1 may not be zero");
1742                return successResult();
1743            }
1744            if (!id.isNoteID()) {
1745                wrnMsg("change_note(): argument 1 is not a note ID");
1746                return successResult();
1747            }
1748    
1749            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1750            if (!pNote) return successResult();
1751    
1752            const int value = args->arg(1)->asInt()->evalInt();
1753            if (value < 0 || value > 127) {
1754                wrnMsg("change_note(): note number of argument 2 is out of range");
1755                return successResult();
1756            }
1757    
1758            if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1759                pNote->cause.Param.Note.Key = value;
1760                m_vm->m_event->cause.Param.Note.Key = value;
1761            } else {
1762                wrnMsg("change_note(): note number can only be changed when note is new");
1763            }
1764    
1765            return successResult();
1766        }
1767    
1768        // change_velo() function
1769    
1770        InstrumentScriptVMFunction_change_velo::InstrumentScriptVMFunction_change_velo(InstrumentScriptVM* parent)
1771        : m_vm(parent)
1772        {
1773        }
1774    
1775        VMFnResult* InstrumentScriptVMFunction_change_velo::exec(VMFnArgs* args) {
1776            AbstractEngineChannel* pEngineChannel =
1777                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1778    
1779            const ScriptID id = args->arg(0)->asInt()->evalInt();
1780            if (!id) {
1781                wrnMsg("change_velo(): note ID for argument 1 may not be zero");
1782                return successResult();
1783            }
1784            if (!id.isNoteID()) {
1785                wrnMsg("change_velo(): argument 1 is not a note ID");
1786                return successResult();
1787            }
1788    
1789            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1790            if (!pNote) return successResult();
1791    
1792            const int value = args->arg(1)->asInt()->evalInt();
1793            if (value < 0 || value > 127) {
1794                wrnMsg("change_velo(): velocity of argument 2 is out of range");
1795                return successResult();
1796            }
1797    
1798            if (m_vm->m_event->scheduleTime == pNote->triggerSchedTime) {
1799                pNote->cause.Param.Note.Velocity = value;
1800                m_vm->m_event->cause.Param.Note.Velocity = value;
1801            } else {
1802                wrnMsg("change_velo(): velocity can only be changed when note is new");
1803            }
1804    
1805            return successResult();
1806        }
1807    
1808        // change_play_pos() function
1809    
1810        InstrumentScriptVMFunction_change_play_pos::InstrumentScriptVMFunction_change_play_pos(InstrumentScriptVM* parent)
1811        : m_vm(parent)
1812        {
1813        }
1814    
1815        VMFnResult* InstrumentScriptVMFunction_change_play_pos::exec(VMFnArgs* args) {
1816            const ScriptID id = args->arg(0)->asInt()->evalInt();
1817            if (!id) {
1818                wrnMsg("change_play_pos(): note ID for argument 1 may not be zero");
1819                return successResult();
1820            }
1821            if (!id.isNoteID()) {
1822                wrnMsg("change_play_pos(): argument 1 is not a note ID");
1823                return successResult();
1824            }
1825    
1826            const int pos = args->arg(1)->asInt()->evalInt();
1827            if (pos < 0) {
1828                wrnMsg("change_play_pos(): playback position of argument 2 may not be negative");
1829                return successResult();
1830            }
1831    
1832            AbstractEngineChannel* pEngineChannel =
1833                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1834    
1835            NoteBase* pNote = pEngineChannel->pEngine->NoteByID( id.noteID() );
1836            if (!pNote) return successResult();
1837    
1838            pNote->Override.SampleOffset = pos;
1839    
1840            return successResult();
1841        }
1842    
1843      // event_status() function      // event_status() function
1844    
1845      InstrumentScriptVMFunction_event_status::InstrumentScriptVMFunction_event_status(InstrumentScriptVM* parent)      InstrumentScriptVMFunction_event_status::InstrumentScriptVMFunction_event_status(InstrumentScriptVM* parent)
# Line 1483  namespace LinuxSampler { Line 1865  namespace LinuxSampler {
1865          return successResult(pNote ? EVENT_STATUS_NOTE_QUEUE : EVENT_STATUS_INACTIVE);          return successResult(pNote ? EVENT_STATUS_NOTE_QUEUE : EVENT_STATUS_INACTIVE);
1866      }      }
1867    
1868        // callback_status() function
1869    
1870        InstrumentScriptVMFunction_callback_status::InstrumentScriptVMFunction_callback_status(InstrumentScriptVM* parent)
1871            : m_vm(parent)
1872        {
1873        }
1874    
1875        VMFnResult* InstrumentScriptVMFunction_callback_status::exec(VMFnArgs* args) {
1876            const script_callback_id_t id = args->arg(0)->asInt()->evalInt();
1877            if (!id) {
1878                wrnMsg("callback_status(): callback ID for argument 1 may not be zero");
1879                return successResult();
1880            }
1881    
1882            AbstractEngineChannel* pEngineChannel =
1883                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1884    
1885            RTList<ScriptEvent>::Iterator itCallback = pEngineChannel->ScriptCallbackByID(id);
1886            if (!itCallback)
1887                return successResult(CALLBACK_STATUS_TERMINATED);
1888    
1889            return successResult(
1890                (m_vm->m_event->execCtx == itCallback->execCtx) ?
1891                    CALLBACK_STATUS_RUNNING : CALLBACK_STATUS_QUEUE
1892            );
1893        }
1894    
1895      // wait() function (overrides core wait() implementation)      // wait() function (overrides core wait() implementation)
1896    
1897      InstrumentScriptVMFunction_wait::InstrumentScriptVMFunction_wait(InstrumentScriptVM* parent)      InstrumentScriptVMFunction_wait::InstrumentScriptVMFunction_wait(InstrumentScriptVM* parent)
# Line 1523  namespace LinuxSampler { Line 1932  namespace LinuxSampler {
1932              (args->argsCount() >= 2) ? (args->arg(1)->asInt()->evalInt() == 1) : false;              (args->argsCount() >= 2) ? (args->arg(1)->asInt()->evalInt() == 1) : false;
1933    
1934          pEngineChannel->ScheduleResumeOfScriptCallback(          pEngineChannel->ScheduleResumeOfScriptCallback(
1935              itCallback, m_vm->m_event->cause.SchedTime(), disableWaitForever              itCallback, m_vm->m_event->scheduleTime, disableWaitForever
1936          );          );
1937    
1938          return successResult();          return successResult();
1939      }      }
1940    
1941        // abort() function
1942    
1943        InstrumentScriptVMFunction_abort::InstrumentScriptVMFunction_abort(InstrumentScriptVM* parent)
1944            : m_vm(parent)
1945        {
1946        }
1947    
1948        VMFnResult* InstrumentScriptVMFunction_abort::exec(VMFnArgs* args) {
1949            const script_callback_id_t id = args->arg(0)->asInt()->evalInt();
1950            if (!id) {
1951                wrnMsg("abort(): callback ID for argument 1 may not be zero");
1952                return successResult();
1953            }
1954    
1955            AbstractEngineChannel* pEngineChannel =
1956                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1957    
1958            RTList<ScriptEvent>::Iterator itCallback = pEngineChannel->ScriptCallbackByID(id);
1959            if (!itCallback) return successResult(); // ignore if callback is i.e. not alive anymore
1960    
1961            itCallback->execCtx->signalAbort();
1962    
1963            return successResult();
1964        }
1965    
1966        // fork() function
1967    
1968        InstrumentScriptVMFunction_fork::InstrumentScriptVMFunction_fork(InstrumentScriptVM* parent)
1969            : m_vm(parent)
1970        {
1971        }
1972    
1973        VMFnResult* InstrumentScriptVMFunction_fork::exec(VMFnArgs* args) {
1974            // check if this is actually the parent going to fork, or rather one of
1975            // the children which is already forked
1976            if (m_vm->m_event->forkIndex != 0) { // this is the entry point for a child ...
1977                int forkResult = m_vm->m_event->forkIndex;
1978                // reset so that this child may i.e. also call fork() later on
1979                m_vm->m_event->forkIndex = 0;
1980                return successResult(forkResult);
1981            }
1982    
1983            // if we are here, then this is the parent, so we must fork this parent
1984    
1985            const int n =
1986                (args->argsCount() >= 1) ? args->arg(0)->asInt()->evalInt() : 1;
1987            const bool bAutoAbort =
1988                (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : true;
1989    
1990            if (m_vm->m_event->countChildHandlers() + n > MAX_FORK_PER_SCRIPT_HANDLER) {
1991                wrnMsg("fork(): requested amount would exceed allowed limit per event handler");
1992                return successResult(-1);
1993            }
1994    
1995            AbstractEngineChannel* pEngineChannel =
1996                static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
1997    
1998            if (!pEngineChannel->hasFreeScriptCallbacks(n)) {
1999                wrnMsg("fork(): global limit of event handlers exceeded");
2000                return successResult(-1);
2001            }
2002    
2003            for (int iChild = 0; iChild < n; ++iChild) {
2004                RTList<ScriptEvent>::Iterator itChild =
2005                    pEngineChannel->forkScriptCallback(m_vm->m_event, bAutoAbort);
2006                if (!itChild) { // should never happen, otherwise its a bug ...
2007                    errMsg("fork(): internal error while allocating child");
2008                    return errorResult(-1); // terminate script
2009                }
2010                // since both parent, as well all child script execution instances
2011                // all land in this exect() method, the following is (more or less)
2012                // the only feature that lets us distinguish the parent and
2013                // respective children from each other in this exect() method
2014                itChild->forkIndex = iChild + 1;
2015            }
2016    
2017            return successResult(0);
2018        }
2019    
2020  } // namespace LinuxSampler  } // namespace LinuxSampler
Legend:
Removed from v.3188  
changed lines
  Added in v.3296
  ViewVC Help
Powered by ViewVC