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schoenebeck |
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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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#include "InstrumentScriptVMFunctions.h" |
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#include "InstrumentScriptVM.h" |
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#include "../AbstractEngineChannel.h" |
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namespace LinuxSampler { |
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InstrumentScriptVMFunction_play_note::InstrumentScriptVMFunction_play_note(InstrumentScriptVM* parent) |
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: m_vm(parent) |
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{ |
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} |
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VMFnResult* InstrumentScriptVMFunction_play_note::exec(VMFnArgs* args) { |
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int note = args->arg(0)->asInt()->evalInt(); |
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int velocity = (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : 127; |
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int sampleoffset = (args->argsCount() >= 3) ? args->arg(2)->asInt()->evalInt() : 0; |
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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 |
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if (note < 0 || note > 127) { |
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errMsg("play_note(): argument 1 is an invalid note number"); |
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return errorResult(); |
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} |
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if (velocity < 0 || velocity > 127) { |
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errMsg("play_note(): argument 2 is an invalid velocity value"); |
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return errorResult(); |
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} |
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if (sampleoffset < 0) { |
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errMsg("play_note(): argument 3 may not be a negative sample offset"); |
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return errorResult(); |
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} else if (sampleoffset != 0) { |
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wrnMsg("play_note(): argument 3 does not support a sample offset other than 0 yet"); |
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} |
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if (duration < -1) { |
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errMsg("play_note(): argument 4 must be a duration value of at least -1 or higher"); |
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return errorResult(); |
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} else if (duration == -1) { |
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wrnMsg("play_note(): argument 4 does not support special value -1 as duration yet"); |
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} else if (duration != 0) { |
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wrnMsg("play_note(): argument 4 does not support any other value as 0 as duration yet"); |
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} |
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AbstractEngineChannel* pEngineChannel = |
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static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel); |
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Event e = m_vm->m_event->cause; |
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e.Type = Event::type_note_on; |
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e.Param.Note.Key = note; |
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e.Param.Note.Velocity = velocity; |
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pEngineChannel->ScheduleEvent(&e, duration); |
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return successResult(); |
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} |
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} // namespace LinuxSampler |