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/* |
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* Copyright (c) 2014 Christian Schoenebeck |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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#include "InstrumentScriptVM.h" |
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#include "../AbstractEngineChannel.h" |
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|
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namespace LinuxSampler { |
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|
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// circumvents a bug in GCC 4.x which causes a sizeof() expression applied |
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// on a class member to throw a compiler error, i.e. with GCC 4.4: |
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// "object missing in reference to 'LinuxSampler::AbstractEngineChannel::ControllerTable'") |
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// or with GCC 4.0: |
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// "invalid use of non-static data member 'LinuxSampler::AbstractEngineChannel::ControllerTable'" |
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#define _MEMBER_SIZEOF(T_Class, Member) sizeof(((T_Class*)NULL)->Member) |
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|
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InstrumentScriptVM::InstrumentScriptVM() : |
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m_event(NULL), m_fnPlayNote(this) |
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{ |
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m_CC.size = _MEMBER_SIZEOF(AbstractEngineChannel, ControllerTable); |
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m_CC_NUM = DECLARE_VMINT(m_cause, class Event, Param.CC.Controller); |
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m_EVENT_NOTE = DECLARE_VMINT(m_cause, class Event, Param.Note.Key); |
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m_EVENT_VELOCITY = DECLARE_VMINT(m_cause, class Event, Param.Note.Velocity); |
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} |
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|
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VMExecStatus_t InstrumentScriptVM::exec(VMParserContext* parserCtx, ScriptEvent* event) { |
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AbstractEngineChannel* pEngineChannel = |
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static_cast<AbstractEngineChannel*>(event->cause.pEngineChannel); |
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|
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// prepare built-in script variables for script execution |
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m_cause = &event->cause; |
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m_CC.data = (int8_t*) &pEngineChannel->ControllerTable[0]; |
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|
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// if script is in start condition, then do mandatory MIDI event |
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// preprocessing tasks, which essentially means updating i.e. controller |
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// table with new CC value in case of a controller event, because the |
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// script might access the new CC value |
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if (!event->executionSlices) { |
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switch (m_cause->Type) { |
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case Event::type_control_change: |
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pEngineChannel->ControllerTable[m_cause->Param.CC.Controller] = |
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m_cause->Param.CC.Value; |
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break; |
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case Event::type_channel_pressure: |
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pEngineChannel->ControllerTable[CTRL_TABLE_IDX_AFTERTOUCH] = |
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m_cause->Param.ChannelPressure.Value; |
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break; |
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case Event::type_pitchbend: |
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pEngineChannel->ControllerTable[CTRL_TABLE_IDX_PITCHBEND] = |
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m_cause->Param.Pitch.Pitch; |
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break; |
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} |
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} |
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|
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// run the script handler(s) |
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VMExecStatus_t res = VM_EXEC_NOT_RUNNING; |
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for ( ; event->handlers[event->currentHandler]; event->currentHandler++) { |
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res = ScriptVM::exec( |
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parserCtx, event->execCtx, event->handlers[event->currentHandler] |
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); |
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event->executionSlices++; |
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if (res & VM_EXEC_SUSPENDED || res & VM_EXEC_ERROR) return res; |
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} |
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|
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return res; |
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} |
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|
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std::map<String,VMIntRelPtr*> InstrumentScriptVM::builtInIntVariables() { |
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// first get buil-in integer variables of derived VM class |
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std::map<String,VMIntRelPtr*> m = ScriptVM::builtInIntVariables(); |
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|
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// now add own built-in variables |
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m["$CC_NUM"] = &m_CC_NUM; |
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m["$EVENT_NOTE"] = &m_EVENT_NOTE; |
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m["$EVENT_VELOCITY"] = &m_EVENT_VELOCITY; |
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// m["$POLY_AT_NUM"] = &m_POLY_AT_NUM; |
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|
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return m; |
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} |
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|
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std::map<String,VMInt8Array*> InstrumentScriptVM::builtInIntArrayVariables() { |
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// first get buil-in integer array variables of derived VM class |
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std::map<String,VMInt8Array*> m = ScriptVM::builtInIntArrayVariables(); |
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|
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// now add own built-in variables |
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m["%CC"] = &m_CC; |
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//m["%KEY_DOWN"] = &m_KEY_DOWN; |
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//m["%POLY_AT"] = &m_POLY_AT; |
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|
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return m; |
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} |
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|
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std::map<String,int> InstrumentScriptVM::builtInConstIntVariables() { |
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// first get buil-in integer variables of derived VM class |
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std::map<String,int> m = ScriptVM::builtInConstIntVariables(); |
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|
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m["$VCC_MONO_AT"] = CTRL_TABLE_IDX_AFTERTOUCH; |
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m["$VCC_PITCH_BEND"] = CTRL_TABLE_IDX_PITCHBEND; |
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|
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return m; |
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} |
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|
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VMFunction* InstrumentScriptVM::functionByName(const String& name) { |
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// built-in script functions of this class |
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if (name == "play_note") return &m_fnPlayNote; |
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|
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// built-in script functions of derived VM class |
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return ScriptVM::functionByName(name); |
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} |
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|
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} // namespace LinuxSampler |