258 lines
6.3 KiB
JavaScript
258 lines
6.3 KiB
JavaScript
import { Parser } from 'binary-parser-encoder';
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const timbre = new Parser()
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.int8('midiChannel') // in 7 bits
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.bit2('assignMode')
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.bit1('eg2Reset')
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.bit1('eg1Reset')
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.bit1('triggerMode')
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.bit2('keyPriority')
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.uint8('unisonDetune')
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.uint8('pitchTune')
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.uint8('pitchBendRange')
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.uint8('pitchTranspose')
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.uint8('pitchVibratoInt')
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.uint8('osc1Wave')
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.uint8('osc1WaveCtrl1')
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.uint8('osc1WaveCtrl2')
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.uint8('osc1DWGSWave')
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.skip(1)
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.bit2('not-use1')
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.bit2('osc2ModSelect')
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.bit2('not-use2')
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.bit2('osc2Wave')
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.uint8('osc2Semitone')
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.uint8('osc2Tune')
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.bit1('not-use3')
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.bit7('portamentoTime')
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.uint8('osc1Level')
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.uint8('osc2Level')
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.uint8('noiseLevel')
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.uint8('filterType')
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.uint8('filterCutoff')
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.uint8('filterResonance')
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.uint8('filterEG1Intensity')
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.uint8('filterVelocitySense')
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.uint8('filterKeyboardTrack')
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.uint8('ampLevel')
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.uint8('ampPanpot')
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.bit1('not-use4')
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.bit1('ampSW')
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.bit5('not-use5')
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.bit1('ampDistortion')
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.uint8('ampVelocitySense')
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.uint8('ampKeyboardTrack')
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.uint8('eg1Attack')
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.uint8('eg1Decay')
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.uint8('eg1Sustain')
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.uint8('eg1Release')
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.uint8('eg2Attack')
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.uint8('eg2Decay')
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.uint8('eg2Sustain')
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.uint8('eg2Release')
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.bit2('not-use6')
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.bit2('lfo1KeySync')
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.bit2('not-use7')
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.bit2('lfo1Wave')
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.uint8('lfo1Freq')
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.bit1('lfo1TempoSync')
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.bit2('not-use8')
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.bit5('lfo1SyncNote')
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.bit2('not-use9')
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.bit2('lfo2KeySync')
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.bit2('not-use10')
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.bit2('lfo2Wave')
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.uint8('lfo2Freq')
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.bit1('lfo2TempoSync')
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.bit2('not-use11')
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.bit5('lfo2SyncNote')
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.bit4('patch1Dest')
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.bit4('patch1Src')
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.uint8('patch1Intensity')
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.bit4('patch2Dest')
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.bit4('patch2Src')
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.uint8('patch2Intensity')
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.bit4('patch3Dest')
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.bit4('patch3Src')
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.uint8('patch3Intensity')
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.bit4('patch4Dest')
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.bit4('patch4Src')
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.uint8('patch4Intensity');
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const vocoder = new Parser()
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.int8('midiChannel') // in 7 bits
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.bit2('assignMode')
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.bit1('eg2Reset')
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.bit1('eg1Reset')
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.bit1('triggerMode')
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.bit2('keyPriority')
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.uint8('unisonDetune')
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.uint8('pitchTune')
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.uint8('pitchBendRange')
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.uint8('pitchTranspose')
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.uint8('pitchVibratoInt')
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.uint8('osc1Wave')
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.uint8('osc1WaveCtrl1')
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.uint8('osc1WaveCtrl2')
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.uint8('osc1DWGSWave')
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.skip(1) // dummy byte
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.bit7('not-use17')
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.bit1('HPF Gate')
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.skip(1)
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.bit1('not-use18')
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.bit7('portamentoTime')
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.uint8('osc1Level')
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.uint8('ext1Level')
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.uint8('noiseLevel')
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.uint8('hpfLevel')
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.uint8('gateSense')
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.uint8('threshold')
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.uint8('shift')
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.uint8('cutoff')
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.uint8('resonance')
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.uint8('modSource')
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.uint8('intensity')
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.uint8('efSense')
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.uint8('ampLevel')
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.uint8('ampDirectLevel')
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.bit7('not-use19')
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.bit1('ampDistortion')
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.uint8('velocitySense')
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.uint8('keyTrack')
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// always 0
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.uint8('eg1Attack')
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// always 0
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.uint8('eg1Decay')
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// always 127
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.uint8('eg1Sustain')
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// always 0
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.uint8('eg1Release')
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.uint8('eg2Attack')
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.uint8('eg2Decay')
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.uint8('eg2Sustain')
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.uint8('eg2Release')
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.bit2('not-use20')
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.bit2('lfo1KeySync')
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.bit2('not-use21')
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.bit2('lfo1Wave')
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.uint8('lfo1Freq')
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.bit1('lfo1TempoSync')
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.bit2('not-use22')
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.bit5('lfo1SyncNote')
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.bit2('not-use23')
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.bit2('lfo2KeySync')
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.bit2('not-use24')
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.bit2('lfo2Wave')
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.uint8('lfo2Freq')
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.bit1('lfo2TempoSync')
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.bit2('not-use25')
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.bit5('lfo2SyncNote')
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.array('levels', {
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type: 'uint8',
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length: 16,
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})
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.array('pans', {
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type: 'uint8',
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length: 16,
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})
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.array('efSenseLevels', {
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type: 'uint8',
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length: 16,
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});
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const parser = new Parser()
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.endianess('big')
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.string('name', { encoding: 'ASCII', length: 12 })
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.skip(2)
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.bit5('not-use12')
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.bit3('arpTriggerLength')
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.bit8('arpTriggerPattern')
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.bit2('not-use13')
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.bit2('voiceMode')
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.bit4('not-use14')
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.bit4('scaleKey')
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.bit4('scaleType')
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.skip(1)
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.bit1('delayFxSync')
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.bit3('not-use15')
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.bit4('delayFXTimeBase')
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.uint8('delayFXDelayTime')
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.uint8('delayFXDepth')
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.uint8('delayFXType')
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.uint8('modFXLFOSpeed')
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.uint8('modFXDepth')
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.uint8('modFXType')
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.uint8('eqHiFreq')
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.uint8('eqHiGain')
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.uint8('eqLowFreq')
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.uint8('eqLowGain')
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.uint8('arpTempo')
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.uint8('arpSeqTempo')
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.bit1('arpOnOff')
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.bit1('arpLatchOnOff')
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.bit2('arpTarget')
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.bit1('not-use16')
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.bit1('arpKeySync')
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.bit4('arpRange')
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.bit4('arpType')
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.uint8('arpGateTime')
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.uint8('arpResolution')
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.uint8('arpSwing')
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.uint8('kbdOctave')
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.nest('timbre1', { type: timbre })
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// dummy bytes *see documentation
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.skip(56)
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.nest('timbre2', { type: timbre });
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// dummy bytes *see documentation
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//.skip(56)
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//.nest('vocoder', { type: vocoder })
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// dummy bytes *see documentation
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// .skip(111);
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function parse(parser, binary) {
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// check if the binary is a valid KORG-produced SYSEX file
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if (binary.length !== 297) {
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throw new Error('incorrect file length');
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}
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if (binary[0] !== 0xf0) {
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throw new Error('first byte is not SYSEX byte');
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}
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if (binary[1] !== 0x42) {
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throw new Error('manufacturer code is not KORG');
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}
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if (binary[4] !== 0x40) {
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throw new Error('not a program dump');
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}
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if (binary[5] !== 0x00) {
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// in all files found in the wild it's always zero
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throw new Error('sixth byte is not zero');
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}
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if (binary[binary.length - 1] !== 0xf7) {
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throw new Error('last byte is does not end SYSEX message');
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}
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const trimmedBinary = binary.slice(5, -1);
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// every eigth byte is padding, so we remove it
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const unpaddedBinary = trimmedBinary.filter((_, idx) => idx % 8);
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const buffer = Buffer.from(unpaddedBinary).toString('hex');
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console.log(buffer);
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console.log(parser.parse(unpaddedBinary));
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// do stuff with the parsed object
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}
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// converts patch object to dump format the system uses
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function serialise(parser, object) {
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// output object
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console.log(parser.encode(object));
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}
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function Parse(object) {
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return parse(parser, object);
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}
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export { Parse, serialise };
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