randomizer

// Copyright 2006, Thomas Scott Stillwell
// All rights reserved.
//
//Redistribution and use in source and binary forms, with or without modification, are permitted 
//provided that the following conditions are met:
//
//Redistributions of source code must retain the above copyright notice, this list of conditions 
//and the following disclaimer. 
//
//Redistributions in binary form must reproduce the above copyright notice, this list of conditions 
//and the following disclaimer in the documentation and/or other materials provided with the distribution. 
//
//The name of Thomas Scott Stillwell may not be used to endorse or 
//promote products derived from this software without specific prior written permission. 
//
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desc:MIDI Note Randomize
desc:MIDI Note Randomize [Stillwell]
//tags: MIDI processing generator
//author: Stillwell

slider1:60<0,127,1>Input MIDI Note #
slider2:0<0,16,1>Input Channel (0=omni)
slider3:48<0,127,1>Lowest Output Note
slider4:72<0,127,1>Highest Output Note
slider5:0<0,100,.1>Mix (%)

in_pin:left input
in_pin:right input
out_pin:left output
out_pin:right output

@init
  note_on = 9*16;
  note_off = 8*16;

@slider
  note=slider1;
  chan=slider2-1;
  start=slider3;
  end=slider4;
  mix=slider5/100;

@block
  while(
    midirecv(mpos, msg1, msg2) ? (
      (msg1 & 240) == note_on ? (
        ((msg1 & 15) == chan) || chan==-1 ? (
          (msg2 & 255) == note ? (
            velocity = msg2 & 65280;
            newnote = floor(rand(end-start)) + start;
            newnote == prevnote ? newnote == end ? newnote = start : newnote += 1;
            midisend(mpos, msg1, velocity | newnote);
            prevnote = newnote;
          );
        ) : (
          midisend(mpos, msg1, msg2);
        );
      );
      (msg1 & 240) == note_off ? (
        ((msg1 & 15) == chan) || chan==-1 ? (
          (msg2 & 255) == note ? (
            midisend(mpos, msg1, newnote);
            prevnote = newnote;
          );
        ) : (
          midisend(mpos, msg1, msg2);
        );
      );
    );
  );

@sample
  spl0 = spl0 * mix;
  spl1 = spl1 * mix;