Gordonjcp/alphaosc
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not quite good enough MIDI

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Gordon JC Pearce 2025-01-07 14:58:50 +00:00
parent 99339d6aef
commit b32579e6e1
1 changed files with 17 additions and 3 deletions
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20
plugin/alphaosc.cpp
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@ -37,8 +37,8 @@ void AlphaOsc::run(const float **, float **outputs, uint32_t frames, const MidiE
bzero(outputs[0], sizeof(float) * frames); bzero(outputs[0], sizeof(float) * frames);
// cast unused parameters to void for now to stop the compiler complaining // cast unused parameters to void for now to stop the compiler complaining
(void)midiEventCount; //(void)midiEventCount;
(void)midiEvents; //(void)midiEvents;
uint32_t i; uint32_t i;
uint32_t osc; uint32_t osc;
@ -53,6 +53,20 @@ void AlphaOsc::run(const float **, float **outputs, uint32_t frames, const MidiE
float out, in; float out, in;
// handle any MIDI events // handle any MIDI events
for(i=0; i<midiEventCount; i++) {
if (midiEvents[i].data[0] == 0x90) {
// note on
note = midiEvents[i].data[1];
freq = 130.81*powf(2, (note-48)/12.0f);
gate = 1;
}
if (midiEvents[i].data[0] == 0x80 && midiEvents[1].data[1] == note) {
// note off for same note
gate = 0;
}
}
// steeply "logarithmic" curve similar to the Juno 106 LFO rate curve // steeply "logarithmic" curve similar to the Juno 106 LFO rate curve
// goes from about 0.1Hz to about 60Hz because this "feels about right" // goes from about 0.1Hz to about 60Hz because this "feels about right"
@ -194,7 +208,7 @@ void AlphaOsc::run(const float **, float **outputs, uint32_t frames, const MidiE
hpfy = out; hpfy = out;
// scale the output and write it to the buffer // scale the output and write it to the buffer
outputs[0][i] = out * 0.5; outputs[0][i] = gate * out * 0.5;
} }
} }